CN107420550A - A kind of rotary sealing appts - Google Patents
A kind of rotary sealing appts Download PDFInfo
- Publication number
- CN107420550A CN107420550A CN201710404939.8A CN201710404939A CN107420550A CN 107420550 A CN107420550 A CN 107420550A CN 201710404939 A CN201710404939 A CN 201710404939A CN 107420550 A CN107420550 A CN 107420550A
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- sleeve
- annular slab
- sealing
- guide rod
- 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.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3448—Pressing means the pressing force resulting from fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3492—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member with monitoring or measuring means associated with the seal
Abstract
The invention discloses a kind of rotary sealing appts, belong to marine machinery field.The rotary sealing appts include sleeve,Annular slab,Bearing,First sealing ring,Second sealing ring and flexible member,Bearing is arranged in one end of sleeve,Annular slab is coaxially connected on the end face of the other end of sleeve,First sealing ring is axially slidably arranged in sleeve along sleeve,First sealing ring is between annular slab and bearing,Second sealing ring is fixedly and coaxially connected on the rotary shaft,Second sealing ring is located at the side of the remote annular slab of the first sealing ring,Because the surface of the inwall of the remote sleeve of the first sealing ring is tapered,The surface of close first sealing ring of second sealing ring is tapered,When therefore being worn between the first sealing ring and the second sealing ring,Flexible member can promote first sealing the second sealing ring of ring side,The first sealing ring and the second sealing ring is set to keep fit-state,The gap for avoiding seal wears from occurring,Extend the life-span of rotary sealing appts.
Description
Technical field
The present invention relates to marine machinery field, more particularly to a kind of rotary sealing appts.
Background technology
In plant equipment, sealing is broadly divided into static seal and dynamic sealing, and static seal refers between the face of two geo-stationaries
Sealing.Dynamic sealing refers to the sealing between the face of two relative motions.In dynamic sealing, relatively conventional one kind is that rotation is close
Envelope, the sealing typically carried out to rotary shaft.
In existing rotary sealing appts, in order to improve the service life of sealing ring, presently mainly compared by selecting
Anti abrasive material makes sealing ring.But because larger abrasion still occurs in the continuous rotation of rotary shaft, sealing ring, with
The increase of wearing- in period, gap is eventually formed at sealing ring, is leaked, and as the aggravation of abrasion, gap can be got over
Come bigger, it is entirely ineffective to ultimately result in sealing ring.
The content of the invention
In order to solve the problems, such as that existing rotary sealing appts service life is short, the embodiments of the invention provide one kind rotation is close
Seal apparatus.The technical scheme is as follows：
The embodiments of the invention provide a kind of rotary sealing appts, the rotary sealing appts are applied to the close of rotary shaft
Envelope, the rotary sealing appts include sleeve, annular slab, bearing, the first sealing ring, the second sealing ring and flexible member, described
Coaxial bearing is arranged in one end of the sleeve, on the end face of the coaxially connected other end in the sleeve of the annular slab,
And the internal diameter of the annular slab is less than the internal diameter of the sleeve, first sealing ring is axially slidably set along the sleeve
Put in the sleeve, and first sealing ring and the sleeve are coaxial, first sealing ring be located at the annular slab and
Between the bearing, the external diameter of first sealing ring is equal with the internal diameter of the sleeve, the remote institute of first sealing ring
State that the surface of the inwall of sleeve is tapered, and the internal diameter of the side of the close annular slab of first sealing ring be less than it is remote
The internal diameter of the side of the annular slab, second sealing ring are fixedly and coaxially connected in the rotary shaft, second sealing
Ring is located at the side of the remote annular slab of first sealing ring, close first sealing ring of second sealing ring
Surface it is tapered, and the surface of the taper of second sealing ring and the surface of the taper of first sealing ring fit,
The flexible member is arranged between the annular slab and first sealing ring, and the flexible member is used to promote described first
Sealing ring moves away from the annular slab side.
Alternatively, the rotary sealing appts also include position-limit mechanism, and the position-limit mechanism is used to avoiding described first close
Seal ring rotates around the axis of the sleeve.
Further, the position-limit mechanism includes the first guide rod, and one end of first guide rod is connected to the ring
On shape plate, the other end of first guide rod is located in the sleeve, and the axis of first guide rod and the sleeve
Diameter parallel, be provided with the first spacing hole on first sealing ring, the diameter parallel of first spacing hole is in described
The axis of one guide rod, first guide rod are plugged in first spacing hole.
Alternatively, the mounting seat of projection is provided with the inwall of the sleeve, and the mounting seat is close positioned at described first
The side of the remote annular slab of seal ring, the position-limit mechanism include the second guide rod, and one end of second guide rod is set
Put in the mounting seat, second guide rod is between the annular slab and the mounting seat, and described second is oriented to
The diameter parallel of bar is in being provided with the second spacing hole, second guide rod on the axis of the sleeve, first sealing ring
It is plugged in second spacing hole.
Alternatively, the mounting seat is in cylindrical tube shape, and the mounting seat is fixedly and coaxially connected with the sleeve, and described second
Guide rod is arranged on the end face of one end of the close annular slab of the mounting seat, and the bearing is arranged on the mounting seat
It is interior.
Specifically, the position-limit mechanism includes the axially extending fin and chute along the sleeve, and the fin is set
On the inwall of close described annular slab one end of the sleeve, the chute is arranged on the close described of first sealing ring
On the surface of the inwall of sleeve, the fin is arranged in the chute, or the chute is arranged on the close of the sleeve
On the inwall of described annular slab one end, the fin is arranged on the surface of the inwall of the close sleeve of first sealing ring
On, the fin is arranged in the chute.
Further, one end of the remote annular slab of the sleeve is provided with the flange extended radially outward.
Alternatively, the rotary sealing appts also include sensor, and the sensor is used to detect first sealing ring
Displacement.
Alternatively, leak is provided with the side wall of the sleeve, the leak is located at the annular slab and described
Between one sealing ring, the leak runs through the side wall of the sleeve.
Alternatively, the bearing is water lubriucated bearing.
The embodiment of the present invention is by the way that rotary shaft inserting into sleeve, to be provided with bearing in one end of sleeve, pass through bearing
Rotary shaft is supported, rotary shaft is freely rotated, by being coaxially disposed the first sealing in one end of the remote bearing of sleeve
Ring, the second sealing ring is coaxially disposed on the rotary shaft, the first sealing ring is in contact with the second sealing ring, by the remote of sleeve
Annular slab is set on the end face of one end of bearing, and the wherein internal diameter of annular slab is less than the internal diameter of sleeve, so as in annular slab
And first set flexible member between sealing ring, flexible member is pressed on the first sealing ring, ring is sealed by first
Bearing side promotes, and is full of water in the space between the second sealing ring and bearing, is acted in the elastic force of hydraulic pressure and flexible member
Under, the first sealing ring mutually compresses with the second sealing ring, between sleeve and rotary shaft formed sealing, avoid the first sealing ring with
The water of the close bearing side of second sealing ring leaks into the side of the close annular slab of the first sealing ring and the second sealing ring.By
It is tapered in the surface of the inwall of the remote sleeve of the first sealing ring, and the internal diameter of the side of the close annular slab of the first sealing ring
Less than the internal diameter of the side away from annular slab, the surface of close first sealing ring of the second sealing ring is tapered, therefore first
When being worn between sealing ring and the second sealing ring, flexible member can push away first sealing the second sealing ring of ring side
It is dynamic, make the first sealing ring and the second sealing ring keeps the state that is bonded to each other, avoid gap occur due to seal wears, prolong
The life-span of rotary sealing appts is grown.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structure chart of rotary sealing appts provided in an embodiment of the present invention；
Fig. 2 is enlarged diagram at A in Fig. 1；
Fig. 3 is the cooperation schematic diagram of a kind of first sealing ring and sleeve provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of structure chart of rotary sealing appts provided in an embodiment of the present invention, as shown in figure 1, the rotatory sealing
Device is applied to the sealing of rotary shaft, and rotary sealing appts include sleeve 20, annular slab 30, bearing 40, the first sealing ring 51, the
Two sealing rings 52 and flexible member.Bearing 40 is co-axially located in one end of sleeve 20.
On the end face of the coaxially connected other end in sleeve 20 of annular slab 30, and the internal diameter of annular slab 30 is less than sleeve 20
Internal diameter.
First sealing ring 51 is axially slidably arranged in sleeve 20 along sleeve 20, and the first sealing ring 51 and sleeve
20 is coaxial, and the first sealing ring 51 is between annular slab 30 and bearing 40, the external diameter of the first sealing ring 51 and the internal diameter of sleeve 20
Equal, the surface of the inwall of the remote sleeve 20 of the first sealing ring 51 is tapered, and the close annular slab 30 of the first sealing ring 51
Side internal diameter be less than away from annular slab 30 side internal diameter.
Second sealing ring 52 is fixedly and coaxially connected in rotary shaft 10, and the second sealing ring 52 is located at the remote of the first sealing ring 51
From the side of annular slab 30.The surface of close first sealing ring 51 of second sealing ring 52 is tapered, and the second sealing ring 52
The surface of taper and the surface of the taper of the first sealing ring 51 fit.
Flexible member is arranged between the sealing ring 51 of annular slab 30 and first, and flexible member is used to promote the first sealing ring 51
Moved to away from the side of annular slab 30.
By the way that rotary shaft inserting into sleeve, to be provided with bearing in one end of sleeve, by bearings rotary shaft, make
Rotary shaft can be rotated freely, by being coaxially disposed the first sealing ring in one end of the remote bearing of sleeve, on the rotary shaft
The second sealing ring is coaxially disposed, the first sealing ring is in contact with the second sealing ring, passes through one end of the remote bearing in sleeve
Annular slab is set on end face, and the wherein internal diameter of annular slab is less than the internal diameter of sleeve, so as in annular slab and the first sealing ring
Between flexible member is set, flexible member is pressed on the first sealing ring, the first sealing ring bearing side promoted,
Water is full of in space between second sealing ring and bearing, under the effect of the elastic force of hydraulic pressure and flexible member, the first sealing ring
Mutually compressed with the second sealing ring, sealing is formed between sleeve and rotary shaft, avoid the first sealing ring and the second sealing ring
Water close to bearing side leaks into the side of the close annular slab of the first sealing ring and the second sealing ring.Due to the first sealing ring
Remote sleeve inwall surface it is tapered, and the internal diameter of the side of the close annular slab of the first sealing ring be less than away from annular
The internal diameter of the side of plate, the surface of close first sealing ring of the second sealing ring is tapered, therefore in the first sealing ring and second
When being worn between sealing ring, flexible member can promote first sealing the second sealing ring of ring side, make the first sealing
Ring and the second sealing ring keep the state being bonded to each other, and avoid gap occur due to seal wears, extend rotatory sealing
The life-span of device.
It is contemplated that the cone angle on the surface of the taper of the second sealing ring 52 and the surface of the taper of the first sealing ring 51
It is identical, to enable the surface of taper of the second sealing ring 52 to be bonded completely with the surface of the taper of the first sealing ring 51.
Alternatively, the cone angle on the surface of the taper of the second sealing ring 52 and the surface of the taper of the first sealing ring 51 is
20 °~40 °.
Second sealing ring 52 can carry out axial limiting by the shaft shoulder in rotary shaft 10, and be compressed by pressure ring 10a, keep away
Exempt from the second sealing ring 52 to loosen.
As shown in figure 1, sleeve 20 can be inserted into the supporting plate 11 for supporting rotary shaft 10, the outer wall of sleeve 20 with
Supporting plate 11 is tightly connected.
It should be noted that the setting form that the sleeve 20 in Fig. 1 is arranged in two supporting plates 11 is merely illustrative, at it
In his embodiment, sleeve 20 can also be only installed in a supporting plate 11.
Preferably, one end of the remote annular slab 30 of sleeve 20 can be provided with the flange 21 extended radially outward.Method
It can be tightly connected between orchid 21 and supporting plate 11, so as to improve the sealing between sleeve 20 and supporting plate 11.
Specifically, can be with sandwiched sealing ring 21a between flange 21 and supporting plate 11.
Alternatively, can be by being welded to connect, so as to realize the installation of sleeve 20 between sleeve 20 and supporting plate 11
Meanwhile realize the sealing between sleeve 20 and supporting plate 11.
When realizing, rotary sealing appts can also include position-limit mechanism, position-limit mechanism be used to avoiding the first sealing ring 51 around
The axis of sleeve 20 rotates, so as to reduce the leakage between the first sealing ring 51 and the inwall of sleeve 20.
Fig. 2 is enlarged diagram at A in Fig. 1, as shown in Fig. 2 position-limit mechanism can include the first guide rod 61, first
One end of guide rod 61 is connected on annular slab 30, and the other end of the first guide rod 61 is located in sleeve 20, and the first guide rod
61 axis and the diameter parallel of sleeve 20, the first spacing hole 51a is provided with the first sealing ring 51, the first spacing hole 51a's
Diameter parallel is plugged in the first spacing hole 51a in the axis of the first guide rod 61, the first guide rod 61, is promoted in flexible member
When first sealing ring 51 moves, the depth that the first guide rod 61 inserts the first spacing hole 51a is gradually reduced, and the first sealing ring 51 can
To be moved along the first guide rod 61, and the movement of the first sealing ring 51 can be made steady.
Preferably, position-limit mechanism can include corresponding more first guide rods 61 set and multiple first spacing holes
51a, so that the movement of the first sealing ring 51 is more steady, more first guide rods 61 can be along the circumference of sleeve 20
Equiangularly spaced setting.
It is contemplated that the first spacing hole 51a is blind hole, i.e. one end of the first spacing hole 51a close annular slab 30
It is open, one end closing of the first spacing hole 51a remote annular slab 30, to avoid the first spacing hole 51a from connecting the first sealing ring
51 both sides, cause to leak.
When realizing, flexible member can be spring 64, and spring 64 can be coaxially set on the first guide rod 61, spring 64
One end can be contacted with annular slab 30, the other end of spring 64 can contact with the first sealing ring 51, so as to ensure bullet
The elastic force direction of spring 64 is all the time along the first guide rod 61.
Alternatively, the first guide rod 61 can be connected through a screw thread with annular slab 30, in order to tearing open for the first guide rod 61
Dress.
Further, the part between the sealing ring 51 of annular slab 30 and first of the first guide rod 61 can also be set
There is screw thread, adjustable plate 63 can be set on first guide rod 61, and the plate face of adjustable plate 63 is vertical with the first guide rod 61, adjustable plate
63 are connected through a screw thread with the first guide rod 61, and one end of spring 64 is supported on adjustable plate 63, the other end of spring 64 and
One sealing ring 51 contacts, so as to by rotating adjustable plate 63, make adjustable plate 63 be moved along the first guide rod 61, to change
The elastic force of spring 64, spring 64 is set to have enough elastic compression the first sealing ring 51 and the second sealing ring 52.
Preferably, the pitch of the screw thread on more first guide rods 61 is identical, and the screw thread on every first guide rod 61
Apart from the minimum range all same of annular slab 30, so as to by controlling the adjustable plate 63 on every first guide rod 61 to rotate
The identical number of turns, so that adjustable plate 63 moves identical distance, can be in order to controlling the spring 64 on every first guide rod 61
Length, make elastic force caused by every spring 64 equal.
As shown in Fig. 2 rotary sealing appts can also include sensor 70, sensor 70 is used to detect the first sealing ring 51
Displacement.With the increase of the first sealing ring 51 and the degree of wear of the second sealing ring 52, the distance of the first sealing ring 51 movement by
Cumulative big, when the first sealing ring 51 and the second sealing ring 52 wear to a certain extent, sealing effectiveness can not meet to require, then need
The first sealing ring 51 and the second sealing ring 52 are changed, by setting sensor 70 to detect the displacement of the first sealing ring 51, so as to
When the distance that can be moved in the first sealing ring 51 reaches a certain setpoint distance, the first sealing ring 51 and the second sealing ring are changed
52。
When realizing, sensor 70 can be arranged on annular slab 30.
Further, rotary sealing appts can also include alarm (not shown), and alarm can be with the electricity of sensor 70
Connection, when sensor 70 detects that the distance of the first sealing ring 51 movement reaches a certain setpoint distance, alarm sends alarm,
To remind operating personnel to change the first sealing ring 51 and the second sealing ring 52.
Specifically, alarm can be but not limited to buzzer, lamp, loudspeaker or its combination, and the alarm sent can be with
It is the form of sound, light or its combination.
Preferably, leak 20a can be provided with the side wall of sleeve 20, leak 20a is located at annular slab 30 and first
Between sealing ring 51, leak 20a runs through the side wall of sleeve 20.By setting leak 20a, the first sealing ring can will be passed through
51 and second sealing ring 52 leak between the sealing ring 51 of annular slab 30 and first water discharge sleeve 20, it is ensured that sensor 70
Normal work.
It is contemplated that leak 20a should be located at the side of the close annular slab 30 of supporting plate 11.
Further, it is also possible to set protective cover 80 on the surface of the close annular slab 30 of supporting plate 11, pass through protective cover 80
Sleeve 20 is located at wherein, storage tank 81 can also be set on protective cover 80, is leaked out with storage from leak 20a
Water.
As shown in Fig. 2 the mounting seat 22 of projection can be provided with the inwall of sleeve 20, and mounting seat 22 is close positioned at first
The side of the remote annular slab 30 of seal ring 51, position-limit mechanism include the second guide rod 62, and one end of the second guide rod 62 is arranged on
In mounting seat 22, the second guide rod 62 between annular slab 30 and mounting seat 22, and the diameter parallel of the second guide rod 62 in
The axis of sleeve 20, the second spacing hole 51b is provided with the first sealing ring 51, the second guide rod 62 is plugged in the second spacing hole
In 51b.When flexible member promotes the movement of the first sealing ring 51, the second guide rod 62 is gradually inserted into the second spacing hole 51b,
First sealing ring 51 can be moved along the second guide rod 62, and the movement of the first sealing ring 51 can be made steady.
It is contemplated that the second spacing hole 51b is blind hole, i.e. one end of the second spacing hole 51b remote annular slab 30
It is open, one end closing of the second spacing hole 51b close annular slab 30, to avoid the second spacing hole 51b from connecting the first sealing ring
51 both sides, cause to leak.
Alternatively, mounting seat 22 can be projection, and projection is located between the sealing ring 52 of bearing 40 and second.
Preferably, mounting seat 22 is in cylindrical tube shape, and mounting seat 22 is fixedly and coaxially connected with sleeve 20, and the second guide rod 62 is set
Put on the end face of one end of the close annular slab 30 of mounting seat 22, bearing 40 is arranged in mounting seat 22.By setting cylinder
While the mounting seat 22 of tubular installs bearing 40, second guide rod 62 is installed using the end face of mounting seat 22, set can be simplified
The structure of cylinder 20, convenient manufacture.Wherein, bearing 40 can be water lubriucated bearing.
Fig. 3 is the cooperation schematic diagram of a kind of first sealing ring and sleeve provided in an embodiment of the present invention, as shown in figure 3, limit
Position mechanism can include being arranged on the close of sleeve 20 along the axially extending fin 201 and chute 511 of sleeve 20, fin 201
On the inwall of the one end of annular slab 30, chute 511 is arranged on the surface of the inwall of the close sleeve 20 of the first sealing ring 51, fin
201 are arranged in chute 511.By setting the fin 201 and chute 511 that are adapted, the movement of the first sealing ring 51 can be made
It is more steady.Fin 201 can be a plurality of along the equiangularly spaced arrangement of circumference of sleeve 20.
In another implementation of the embodiment of the present invention, chute 511 can also be arranged on the close annular of sleeve 20
On the inwall of the one end of plate 30, fin 201 is arranged on the surface of the inwall of the close sleeve 20 of the first sealing ring 51, fin 201
It is arranged in chute 511.
Rotary sealing appts provided in the present invention go for swivel joint, underwater winch, immersed pump or its
He needs the equipment for carrying out rotatory sealing.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. a kind of rotary sealing appts, the rotary sealing appts are applied to the sealing of rotary shaft, it is characterised in that the rotation
Sealing device includes sleeve (20), annular slab (30), bearing (40), the first sealing ring (51), the second sealing ring (52) and elasticity
Element, the bearing (40) are co-axially located in one end of the sleeve (20), and the annular slab (30) is coaxially connected described
On the end face of the other end of sleeve (20), and the internal diameter of the annular slab (30) is less than the internal diameter of the sleeve (20), and described the
One sealing ring (51) is axially slidably arranged in the sleeve (20) along the sleeve (20), and first sealing ring
(51) with the sleeve (20) coaxially, first sealing ring (51) be located at the annular slab (30) and the bearing (40) it
Between, the external diameter of first sealing ring (51) is equal with the internal diameter of the sleeve (20), first sealing ring (51) it is remote
The surface of the inwall of the sleeve (20) is tapered, and the side of the close annular slab (30) of first sealing ring (51)
Internal diameter be less than the internal diameter of the side away from the annular slab (30), second sealing ring (52) is fixedly and coaxially connected described
In rotary shaft (10), second sealing ring (52) is located at the one of the remote annular slab (30) of first sealing ring (51)
Side, the surface of close first sealing ring (51) of second sealing ring (52) is tapered, and second sealing ring
(52) surface of taper and the surface of the taper of first sealing ring (51) fit, and the flexible member is arranged on described
Between annular slab (30) and first sealing ring (51), the flexible member is used to promote first sealing ring (51) to remote
Moved from the annular slab (30) side.
2. rotary sealing appts according to claim 1, it is characterised in that the rotary sealing appts also include position restrainer
Structure, the position-limit mechanism are used to avoid first sealing ring (51) from rotating around the axis of the sleeve (20).
3. rotary sealing appts according to claim 2, it is characterised in that the position-limit mechanism includes the first guide rod
(61), one end of first guide rod (61) is connected on the annular slab (30), first guide rod (61) it is another
End is in the sleeve (20), and the diameter parallel of the axis of first guide rod (61) and the sleeve (20), described
The first spacing hole (51a) is provided with first sealing ring (51), the diameter parallel of first spacing hole (51a) is in described first
The axis of guide rod (61), first guide rod (61) are plugged in first spacing hole (51a).
4. rotary sealing appts according to claim 2, it is characterised in that be provided with the inwall of the sleeve (20) convex
The mounting seat (22) risen, and the mounting seat (22) is located at the one of the remote annular slab (30) of first sealing ring (51)
Side, the position-limit mechanism include the second guide rod (62), and one end of second guide rod (62) is arranged on the mounting seat
(22) on, second guide rod (62) is between the annular slab (30) and the mounting seat (22), and described second leads
To bar (62) diameter parallel in being provided with the second spacing hole on the axis of the sleeve (20), first sealing ring (51)
(51b), second guide rod (62) are plugged in second spacing hole (51b).
5. rotary sealing appts according to claim 4, it is characterised in that the mounting seat (22) is in cylindrical tube shape, institute
State mounting seat (22) to be fixedly and coaxially connected with the sleeve (20), second guide rod (62) is arranged on the mounting seat (22)
The close annular slab (30) one end end face on, the bearing (40) is arranged in the mounting seat (22).
6. rotary sealing appts according to claim 2, it is characterised in that the position-limit mechanism is included along the sleeve
(20) axially extending fin (201) and chute (511), the fin (201) are arranged on the close institute of the sleeve (20)
On the inwall for stating annular slab (30) one end, the chute (511) is arranged on the close sleeve of first sealing ring (51)
(20) on the surface of inwall, the fin (201) is arranged in the chute (511), or the chute (511) is arranged on
On the inwall of close described annular slab (30) one end of the sleeve (20), the fin (201) is arranged on first sealing
On the surface of the inwall of the close sleeve (20) of ring (51), the fin (201) is arranged in the chute (511).
7. according to the rotary sealing appts described in any one of claim 1~6, it is characterised in that the sleeve (20) it is remote
One end of the annular slab (30) is provided with the flange (21) extended radially outward.
8. according to the rotary sealing appts described in any one of claim 1~6, it is characterised in that the rotary sealing appts are also
Including sensor (70), the sensor (70) is used for the displacement for detecting first sealing ring (51).
9. rotary sealing appts according to claim 8, it is characterised in that be provided with and let out in the side wall of the sleeve (20)
Small opening (20a), the leak (20a) is between the annular slab (30) and first sealing ring (51), the leakage
The side wall of the sleeve (20) is run through in hole (20a).
10. according to the rotary sealing appts described in any one of claim 1~6, it is characterised in that the bearing (40) is moistened for water
Plain besring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710404939.8A CN107420550B (en) | 2017-06-01 | 2017-06-01 | A kind of rotary sealing appts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710404939.8A CN107420550B (en) | 2017-06-01 | 2017-06-01 | A kind of rotary sealing appts |
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| Publication Number | Publication Date |
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| CN107420550A true CN107420550A (en) | 2017-12-01 |
| CN107420550B CN107420550B (en) | 2019-07-05 |
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| CN201710404939.8A Active CN107420550B (en) | 2017-06-01 | 2017-06-01 | A kind of rotary sealing appts |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526211A (en) * | 2019-09-25 | 2019-12-03 | 浙江高成绿能科技有限公司 | A kind of portable chemical hydrogen generating system |
| CN112556948A (en) * | 2020-12-16 | 2021-03-26 | 广州奇典皮件有限公司 | Water detection device for remanufacturing air compressor cylinder body |
| CN113238016A (en) * | 2020-06-08 | 2021-08-10 | 深圳延浩科技有限公司 | Sealing assembly and corresponding multi-interface multi-parameter water quality analyzer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110526211A (en) * | 2019-09-25 | 2019-12-03 | 浙江高成绿能科技有限公司 | A kind of portable chemical hydrogen generating system |
| CN110526211B (en) * | 2019-09-25 | 2024-03-29 | 浙江高成绿能科技有限公司 | Portable chemical hydrogen production system |
| CN113238016A (en) * | 2020-06-08 | 2021-08-10 | 深圳延浩科技有限公司 | Sealing assembly and corresponding multi-interface multi-parameter water quality analyzer |
| CN113238016B (en) * | 2020-06-08 | 2022-04-01 | 深圳延浩科技有限公司 | Sealing assembly and corresponding multi-interface multi-parameter water quality analyzer |
| CN112556948A (en) * | 2020-12-16 | 2021-03-26 | 广州奇典皮件有限公司 | Water detection device for remanufacturing air compressor cylinder body |
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|---|---|
| CN107420550B (en) | 2019-07-05 |
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