CN208619666U - A kind of pump uses double sealing structure - Google Patents
A kind of pump uses double sealing structure Download PDFInfo
- Publication number
- CN208619666U CN208619666U CN201821213804.XU CN201821213804U CN208619666U CN 208619666 U CN208619666 U CN 208619666U CN 201821213804 U CN201821213804 U CN 201821213804U CN 208619666 U CN208619666 U CN 208619666U
- Authority
- CN
- China
- Prior art keywords
- sealing
- pump
- fixed part
- lip
- pump shaft
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 121
- 210000004907 gland Anatomy 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000005728 strengthening Methods 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 13
- 239000000428 dust Substances 0.000 abstract description 2
- 239000002355 dual-layer Substances 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model provides a kind of pump double sealing structure, comprising: the Oil sealing assembly for being sleeved on the gland seal assembly on pump shaft and being embedded in pump sealing cover；Gland seal assembly includes fixed part, rotation section and postive stop baffle, and fixed part is affixed with sealing cover, and rotation section is sleeved on pump shaft, and postive stop baffle is connected by spring with rotation section；Oil sealing assembly includes skeleton ring and friction mechanism, and skeleton ring is equipped with the dustproof lip for the sealing lip of sealing and for blocks dust, and friction mechanism accelerates the volatilization of leaking medium by frictional heat for rubbing with pump shaft.A kind of pump described in the utility model manufactures dual layer sealing effect by axle envelope and oil sealing with double sealing structure, realizes the No leakage operation of liquid pump.
Description
Technical field
The utility model belongs to liquid pump manufacturing technology field, more particularly, to a kind of pump double sealing structure.
Background technique
In society now, the work for conveying liquid relies primarily on all kinds of liquid pumps to complete, liquid pump by prime mover or
The mechanical energy that other external powering devices generate sends liquid to, increases liquid energy, to realize the purpose of trandfer fluid.
When pumping liquid, the leakage of pumped (conveying) medium is prevented to be very important a job, once liquid leakage occurs,
It will cause economic loss, the serious generation that can also induce dangerous situation.Existing liquid pump usually relies on mechanical seal to realize
Anti-leak purpose, but only cannot be guaranteed that the zero leakage of liquid pump works with mechanical sealing parts.
Utility model content
In view of this, the utility model is directed to a kind of pump double sealing structure, to realize the No leakage operating of pump.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of pump double sealing structure, comprising: the oil for being sleeved on the gland seal assembly on pump shaft and being embedded in pump sealing cover
Sealing assembly；
The gland seal assembly includes fixed part, rotation section and postive stop baffle, the fixation that the fixed part passes through radially installed
Bolt is mutually fixed with sealing cover, and gasket is equipped between the end face that fixed part is in contact with sealing cover, and the upper end of fixed part is inserted into
The inside grooves of rotation section lower end, the rotation section are sleeved on pump shaft and circumferentially fixed with pump shaft, and the upper surface of rotation section is set
There is ring-spring slot, the underrun cylindrical spring of the spring groove is connected with postive stop baffle, and the postive stop baffle is sleeved on pump
Axial limiting is carried out on axis and by the positioning shaft shoulder on pump shaft；
The Oil sealing assembly includes skeleton ring and friction mechanism, and the skeleton ring and sealing cover are interference fitted, in skeleton ring
Inner wall be equipped with V-seal lip and dustproof lip, sealing lip is placed in the nearly media side of skeleton ring, and dustproof lip is placed in skeleton ring
The lip end of nearly atmosphere side, sealing lip and dustproof lip is bonded with pump shaft side wall, is equipped at the back side of sealing lip close for strengthening
Seal self-tightening spring of the lip oil sealing from clamp force；The friction mechanism includes connection sheet and friction block, and the connection sheet annular distribution exists
On the inner side end of skeleton ring, friction block is equipped in connection sheet, the friction block fits with pump shaft side wall.
Further, the side wall of the fixed part is equipped with annular oil seal grooving, is equipped in recess sidewall and cuts with oil sealing
The identical grooving of groove shape, two groovings constitute circular oil sealing cavity.
Further, the inside grooves are equipped with sealing ring, and the sealing ring is embedded in recess sidewall, the internal diameter of sealing ring with
The outer diameter of fixed part is equal.
Further, the upper surface upper annular of the fixed part is evenly equipped with ball hole, is equipped with and turns inside the ball hole
Dynamic ball, the groove floor in the rotation section are equipped with the annular orbit slot for accommodating rotation ball.
Further, magnet is equipped in the fixed part both ends of the surface adjacent with rotation section, two magnet are magnetic opposite.
Further, the friction block is made of industrial pure copper, and dentation is equipped on the side that friction block is contacted with pump shaft
Grooving.
Further, lithium base grease is coated between the friction block and pump shaft and between pump shaft and sealing lip.
Compared with the existing technology, a kind of pump described in the utility model is had the advantage that with double sealing structure
(1) a kind of pump double sealing structure that the utility model is stated constitutes dual-seal by gland seal assembly and Oil sealing assembly
Effect, when the gland seal assembly sealed as the first order leaks, Oil sealing assembly can stop the medium outflow pump housing of leakage,
Guarantee the No leakage operating of the pump housing；Friction mechanism is volatilized by the medium that the heat that friction generates promotes gland seal assembly to leak, energy
Reduce the operating pressure of Oil sealing assembly；After present apparatus ageing failure, it is only necessary to replace Oil sealing assembly, reduce maintenance cost.
(2) pass through the elastic force of cylindrical spring and the magnetic force of magnet between fixed part described in the utility model and rotation section
It is compressed, so that gland seal assembly has better seal effect；Oil sealing cavity is equipped between fixed part and rotation section, it can
Further promote the leakproofness of gland seal assembly.
(3) it is equipped with rotation ball between fixed part described in the utility model and rotation section, can be effectively reduced fixed part
Friction between rotation section extends the service life of gland seal assembly.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is that the utility model is mounted on the intracorporal structural schematic diagram of pump；
Fig. 2 is the structural schematic diagram of the utility model；
Fig. 3 is the perspective view of the explosion of the utility model；
Fig. 4 is the cut-away illustration of the utility model；
Fig. 5 is fixed part described in the utility model and rotating part cut-away illustration；
Fig. 6 is Oil sealing assembly structural schematic diagram described in the utility model.
Description of symbols:
The 1- pump housing；2- sealing cover；3- pump shaft；4- Oil sealing assembly；41- skeleton ring；411- sealing lip；412- dustproof lip；
413- self-tightening spring；42- connection sheet；43- friction block；431- dentation grooving；5- gland seal assembly；51- fixed part；511- oil sealing is cut
Slot；512- rotates ball；513- magnet；The rotation section 52-；521- sealing ring；522- oil sealing cavity；523- groove；524- spring
Slot；525- track groove；53- postive stop baffle；531- cylindrical spring；54- gasket；55- fixing bolt.
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.
A kind of pump double sealing structure, is arranged inside the pump housing 1, installation site can be illustrated by Fig. 1.Such as Fig. 1 institute
Show, the present embodiment includes the Oil sealing assembly 4 in the gland seal assembly 5 being sleeved on pump shaft 3 and insertion pump sealing cover 2.
Gland seal assembly 5 and Oil sealing assembly 4 belong to movable sealing structure, as shown in figure 5, gland seal assembly 5 includes fixed part
51, rotation section 52 and postive stop baffle 53.Fixed part 51 and sealing cover 2 pass through 55 Joint of fixing bolt of radially installed, fixed
Bolt 55 is used to carry out fixed part 51 limit of axial and circumferential, and number must not be less than four and should be evenly distributed in fixation
Around portion 51.The lower end surface of fixed part 51 is in contact with sealing cover 2, gasket 54 is housed in contact site, which is used for
Dielectric leakage is prevented, the pressure at 54 both ends of gasket is provided by fixing bolt 55.
Rotation section 52 is sleeved on pump shaft 3 and circumferentially fixed with pump shaft 3, which can pass through rotation section 52 and pump shaft 3
Interference fit or spline connection realize.Groove 523 is equipped on the lower end surface of rotation section 52, the upper end of fixed part 51 is inserted into
Inside groove 523；Ring-spring slot 524, the underrun cylindrical spring of spring groove 524 are equipped on the upper surface of rotation section 52
531 are connected with postive stop baffle 53, which carries out axial limiting by the positioning shaft shoulder on pump shaft 3.
The sealing principle of gland seal assembly 5 is similar to mechanical sealing member, and at work, fixed part 51 and the pump housing 1 are opposing stationary,
Rotation section 52 is rotated with the rotation of pump shaft 3.The internal diameter of rotation section 52 is identical as the outer diameter of pump shaft 3, therefore inside the pump housing 1
Medium is only capable of through outflow inside the gap between fixed part 51 and rotation section 52.Cylindrical spring 531 is continuously at work
Compressive state, therefore cylindrical spring 531 can generate pressure simultaneously to postive stop baffle 53 and rotation section 52, postive stop baffle 53 is pumped
The axial limiting of 3 shaft shoulder of axis, cannot move axially, so rotation section 52 can be squeezed to fixed part 51, so
The gap between fixed part 51 and rotation section 52 is just reduced, a possibility that medium passes through is reduced, is also achieved that sealing
Effect.
For the sealing effect for strengthening gland seal assembly 5, magnet is equipped in the both ends of the surface adjacent with rotation section 52 of fixed part 51
513, two magnet, 513 magnetism is on the contrary, the position of magnet 513 can be illustrated by Fig. 4.
Gland seal assembly 5 can bear the pressure medium inside the pump housing 1 at work, therefore only provided by cylindrical spring 531
Compensation elastic force is there is no guarantee that fixed part 51 and rotation section 52 are bonded.It is added between fixed part 51 and rotation section 52 mutually
The magnet 513 mutually attracted can strengthen the laminating degree of gland seal assembly 5, further promote the leakproofness of gland seal assembly 5.
Preferably, sealing ring 521 is equipped with inside groove 523, which is embedded in 523 side wall of groove, sealing ring 521
Internal diameter it is equal with the outer diameter of fixed part 51；The side wall of fixed part 51 is equipped with annular oil seal grooving 511, in 523 side wall of groove
It is equipped with grooving identical with 511 shape of oil sealing grooving, two groovings constitute circular oil sealing cavity 522.Sealing ring 521 and oil
The position of envelope cavity 522 can be illustrated by Fig. 4.
For the sealing effect for strengthening gland seal assembly, the present embodiment is provided with sealing ring 521 and oil sealing cavity in inside grooves
522.When medium flows into groove 523, oil sealing cavity 522 can be first passed through, oil sealing cavity 522 can make medium form a closing
Annulus, which can play oil sealing effect to gland seal assembly 5, hinder passing through for medium.Sealing ring 521 can further reduce
Gap between fixed part 51 and groove 523 hinders the medium for having passed through oil sealing cavity 522 further to leak.
As a preferred embodiment of the present embodiment, as shown in figure 3, the upper surface upper annular of fixed part 51 is evenly equipped with
Ball hole is equipped with rotation ball 512 inside ball hole, is equipped in 523 bottom surface of groove of rotation section 52 and accommodates rotation ball
512 annular orbit slot 525.
For the sealing effect for realizing gland seal assembly 5, need to fit closely between fixed part 51 and rotation section 52, but with
The rotation of rotation section 52, fixed part 51 can generate abrasion, and abrasion will lead to the failure of gland seal assembly 5.The present embodiment is in fixed part
Rotation ball 512 is additionally arranged in 51 top end surface, when rotation section 52 rotates, rotation ball 512 can reduce fixed part
Frictional force between 51 and rotation section 52 avoids the generation of abrasion condition, extends the service life of gland seal assembly 5.
Oil sealing assembly 4 in the present embodiment includes skeleton ring 41 and friction mechanism, the structure of Oil sealing assembly 4 can by Fig. 6 into
Row signal.The inner wall of skeleton ring 41 is equipped with V-seal lip 411 and dustproof lip 412, and sealing lip 411 is placed in the close of skeleton ring 41
Media side, dustproof lip 412 are placed in the nearly atmosphere side of skeleton ring 41, and the lip end of sealing lip 411 and dustproof lip 412 is and pump shaft
The fitting of 3 side walls is equipped at the back side of sealing lip 411 for strengthening self-tightening spring 413 of 411 oil sealing of sealing lip from clamp force.It is dust-proof
Lip 412 extends the service life of Oil sealing assembly 4 for preventing extraneous dust from entering Oil sealing assembly 4, sealing lip 411 for realizing
The sealing effect of Oil sealing assembly 4.Friction mechanism includes connection sheet 42 and friction block 43, and 42 annular distribution of connection sheet is in skeleton ring 41
Inner side end on, friction block 43 is equipped in connection sheet 42, friction block 43 fits with 3 side wall of pump shaft.
Wherein, skeleton ring 41 and sealing cover 2 are interference fitted, it is ensured that Oil sealing assembly 4 will not turn with the rotation of pump shaft 3
It is dynamic.
It should be noted that the lip end of sealing lip 411 can be fitted closely with pump shaft 3 at work, self-tightening spring 413 can be
Sealing lip 411 provides radial clamp force.The medium leaked out from gland seal assembly 5 can form one layer of oil between lip end and pump shaft
Film, under the action of surface tension of liquid, the rigidity of oil film makes oil film contact to form a new lunar surface with air just, it is therefore prevented that
Leakage of the working media to outside pump.At the same time, friction mechanism can generate heat because of the rotation of pump shaft 3, this partial heat meeting
The volatilization for the medium for accelerating gland seal assembly 5 to be leaked is finally reached the No leakage operating of liquid pump.
Preferably, friction block 43 is made of industrial pure copper, cuts on the side that friction block 43 is contacted with pump shaft 3 equipped with dentation
Slot 431；To avoid Oil sealing assembly 4 that excessive wear occurs, between friction block 43 and pump shaft 3 and pump shaft 3 and sealing lip 411
Between be coated with lithium base grease.
43 hardness of friction block being made by industrial pure copper is lower, in the friction process of friction block 43 and pump shaft 3, by
It is greater than the hardness of friction block 43 in the hardness of pump shaft 3, therefore the caused loss that rubs can only act on friction block 43, not will lead to
The damage of pump shaft 3.Meanwhile industrial pure copper has good heating conduction, the heat that friction generates quickly can be transmitted to Jie
In matter, the volatilization of accelerating medium.
Effect explanation is carried out to above scheme below:
A kind of pump provided in this embodiment is operated with double sealing structure by the No leakage that double-layer seal realizes liquid pump.
Gland seal assembly 5 in embodiment enhances laminate pressure by magnet 513 and cylindrical spring 531；By oil sealing cavity 522 and close
Seal 521 enhances sealing effect；Frictional dissipation is reduced by rotating ball 512, can guarantee to use for a long time and not damage
And there is outstanding sealing effect.Oil sealing assembly 4 in embodiment passes through the volatilization of friction mechanism accelerating medium, passes through sealing lip
411 manufacture oil sealing films, can accelerate the volatilization of leaking medium while realizing oil sealing function, manufacture the effect of zero leakage.
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 (7)
1. a kind of pump double sealing structure, it is characterised in that: include: the gland seal assembly (5) being sleeved on pump shaft (3) and insertion pump
With the Oil sealing assembly (4) in sealing cover (2)；
The gland seal assembly (5) includes fixed part (51), rotation section (52) and postive stop baffle (53), and the fixed part (51) passes through
The fixing bolt (55) of radially installed is mutually fixed with sealing cover (2), between the end face that fixed part (51) is in contact with sealing cover (2)
Equipped with gasket (54), the groove (523) of upper end insertion rotation section (52) lower end of fixed part (51) is internal, the rotation section
(52) it is sleeved on pump shaft (3) and circumferentially fixed with pump shaft (3), the upper surface of rotation section (52) is equipped with ring-spring slot (524),
The underrun cylindrical spring (531) of the spring groove (524) is connected with postive stop baffle (53), postive stop baffle (53) suit
Axial limiting is carried out on pump shaft (3) and through the positioning shaft shoulder on pump shaft (3)；
The Oil sealing assembly (4) includes skeleton ring (41) and friction mechanism, and the skeleton ring (41) is matched with sealing cover (2) interference
It closes, V-seal lip (411) and dustproof lip (412) is equipped on the inner wall of skeleton ring (41), sealing lip (411) is placed in skeleton ring
(41) nearly media side, dustproof lip (412) are placed in the nearly atmosphere side of skeleton ring (41), sealing lip (411) and dustproof lip
(412) lip end is bonded with pump shaft (3) side wall, is equipped at the back side of sealing lip (411) for strengthening sealing lip (411) oil sealing
From the self-tightening spring (413) of clamp force；The friction mechanism includes connection sheet (42) and friction block (43), connection sheet (42) ring
Shape is distributed on the inner side end of skeleton ring (41), on connection sheet (42) be equipped with friction block (43), the friction block (43) with
Pump shaft (3) side wall fits.
2. a kind of pump double sealing structure according to claim 1, it is characterised in that: on the side wall of the fixed part (51)
Equipped with annular oil seal grooving (511), grooving identical with oil sealing grooving (511) shape is equipped on groove (523) side wall, two cut
Slot constitutes circular oil sealing cavity (522).
3. a kind of pump double sealing structure according to claim 2, it is characterised in that: be equipped with inside the groove (523)
Sealing ring (521), the sealing ring (521) are embedded in groove (523) side wall, internal diameter and fixed part (51) of sealing ring (521)
Outer diameter is equal.
4. it is according to claim 1 or 3 it is a kind of pump use double sealing structure, it is characterised in that: the fixed part (51) it is upper
End face upper annular is evenly equipped with ball hole, rotation ball (512) is equipped with inside the ball hole, in the recessed of the rotation section (52)
Slot (523) bottom surface is equipped with the annular orbit slot (525) for accommodating rotation ball (512).
5. a kind of pump double sealing structure according to claim 4, it is characterised in that: in the fixed part (51) and rotation
It is equipped with magnet (513) in the adjacent both ends of the surface in portion (52), two magnet (513) are magnetic opposite.
6. a kind of pump double sealing structure according to claim 1, it is characterised in that: the friction block (43) is by technical pure
Copper is at equipped with dentation grooving (431) on the side that friction block (43) is contacted with pump shaft (3).
7. a kind of pump double sealing structure according to claim 6, it is characterised in that: the friction block (43) and pump shaft
(3) lithium base grease is coated between and between pump shaft (3) and sealing lip (411).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821213804.XU CN208619666U (en) | 2018-07-27 | 2018-07-27 | A kind of pump uses double sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821213804.XU CN208619666U (en) | 2018-07-27 | 2018-07-27 | A kind of pump uses double sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208619666U true CN208619666U (en) | 2019-03-19 |
Family
ID=65707938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821213804.XU Expired - Fee Related CN208619666U (en) | 2018-07-27 | 2018-07-27 | A kind of pump uses double sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208619666U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022652A (en) * | 2019-12-12 | 2020-04-17 | 湖南海博瑞德电智控制技术有限公司 | Permanent magnet sealing test device |
-
2018
- 2018-07-27 CN CN201821213804.XU patent/CN208619666U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022652A (en) * | 2019-12-12 | 2020-04-17 | 湖南海博瑞德电智控制技术有限公司 | Permanent magnet sealing test device |
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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 |
Granted publication date: 20190319 |