CN202883454U - Highly-reliable bi-directional shaft sealing device suitable for trash pump - Google Patents
Highly-reliable bi-directional shaft sealing device suitable for trash pump Download PDFInfo
- Publication number
- CN202883454U CN202883454U CN 201220352136 CN201220352136U CN202883454U CN 202883454 U CN202883454 U CN 202883454U CN 201220352136 CN201220352136 CN 201220352136 CN 201220352136 U CN201220352136 U CN 201220352136U CN 202883454 U CN202883454 U CN 202883454U
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- China
- Prior art keywords
- ring
- pump
- retainer
- gland
- sealing
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- 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 - Lifetime
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Abstract
The utility model provides a highly-reliable bi-directional shaft sealing device suitable for a trash pump. The highly-reliable bi-directional shaft sealing device comprises a gland fixedly connected with a pump body. The gland is sleeved outside a pump shaft. A sealing static component is arranged between the inner wall of the gland and the outer circumferential face of the pump shaft. A sealing rotating component moving along with the pump shaft is arranged on a side edge of the sealing static component and is matched with the sealing static component to form mechanical sealing. The highly-reliable bi-directional shaft sealing device is characterized in that the sealing static component is composed of a static ring, a static ring O-shaped ring and the like, and the sealing rotating component is composed of a rotating ring assembly, a transmission seat, a wedge-shaped transmission ring, and the like. The highly-reliable bi-directional shaft sealing device can absorb vibration, swing, inclination and outside impact force to a large extent, enables a sealing device to realize bi-directional sealing under the bi-directional pressure bearing condition, and is more reliable in sealing performance.
Description
Technical field
The utility model relates to a kind of two-way shaft sealer for transh pump.
Background technique
The mechanical seal device of conventional pump, its two seal face allow the leakage of trace.When being used for this mechanical seal device on the transh pump, be easy to cause media particle to reveal and be trapped between the both ends of the surface, play the abrasive material effect, accelerate the wearing and tearing of rubbing surface, be that mechanical seal was lost efficacy within a short period of time, causes more serious dielectric leakage to occur.Especially when transh pump be used for suction mud peculiar to vessel, when taking out sand because extraneous vibration, wave, the impact of inclination and foreign impacts power, more reduced mechanical seal device reliability and working life on the existing transh pump.
Summary of the invention
The purpose of this utility model provides a kind of mechanical seal device that is used for transh pump that improves sealing reliability and working life.
In order to achieve the above object, the technical solution of the utility model has provided a kind of two-way shaft sealer that is applicable to the high reliability of transh pump, comprise the gland that is connected and fixed with the pump housing, gland is set in outside the pump shaft, between the outer peripheral surface of the inwall of gland and pump shaft, be provided with the sealing static part, be provided with the seal rotary parts of following the pump shaft motion at sealing static part side, seal rotary parts and the formation mechanical seal that matches of sealing static part, it is characterized in that: the sealing static part comprises that a side end face is the stationary ring of seal face, between the inwall of the outer peripheral surface of stationary ring and gland, be provided with at least one stationary ring O shape circle, side at gland is provided with pressing plate, pressing plate and gland are connected and fixed and are set in stationary ring, by pressing plate stationary ring are applied pressure towards pump shaft;
The seal rotary parts comprise that a side end face is the rotating ring components of seal face, the seal face of rotating ring components and the seal face of stationary ring are sealed and matched, outside pump shaft, be arranged with retainer and wedge shape transmission ring, the end of retainer forms interior wedge surface, thereby the wedge surface of wedge shape transmission ring inserts and should produce fastening force in the interior wedge surface, the inwall of retainer and wedge shape transmission ring is close to the outer peripheral surface of pump shaft, rotating ring components and retainer are connected and fixed, one end connection for transmission seat of spring, the other end connects rotating ring components, and the elastic force by spring forms seal pressure so that the seal face of rotating ring components is close to the seal face of stationary ring all the time.
Preferably, realize interference fit by O shape circle between described gland and the described pump housing.
Preferably, described rotating ring components comprises the rotation ring seat that is sheathed on outside the described pump shaft, be formed with a circle mounting groove in the end of the close described sealing static part of rotation ring seat, the outer peripheral surface of an end that deviates from mutually at rotation ring seat and described sealing static part has one and encloses groove, the transmission screw is located at this groove, thereby its end is passed the rotation ring seat and is located at and will rotates ring seat in the described retainer and be fixedly connected with described retainer, one side end face is that the rotating ring of seal face is located in the mounting groove, rotating ring is connected and fixed with the rotation ring seat, form interference fit by the 2nd O shape circle and the 3rd O shape circle respectively between the inwall of the outer peripheral surface of rotating ring and rotation ring seat and between the opposite side end face of rotating ring and the rotation ring seat, described retainer is provided with the 4th O shape circle between the inwall of the outer peripheral surface of described retainer and rotation ring seat between the outer peripheral surface of the inwall that rotates ring seat and described pump shaft.
Preferably, be provided with rubber neck at described rotation ring seat overcoat, rubber neck covers described groove fully, one end and described nested connection of rotation ring seat, its the other end is connected with described retainer is nested, is provided with support ring between the inwall of the outer peripheral surface of described retainer and rubber neck.
Preferably, be provided with spring pin in described rotation ring seat, described spring housing is located at outside the spring pin.
Preferably, realize interference fit by the 5th O shape circle between the outer peripheral surface of the inwall of described retainer and described pump shaft.
The structure that the utility model provides can absorb largely vibration, wave, tilts and extraneous impact force, simultaneously, has solved again the problem that realizes two way sealed in the seal arrangement bidirectional bearing situation by the utility model, and sealability is more reliable.
Description of drawings
Fig. 1 is the structural representation of the two-way shaft sealer of a kind of among embodiment high reliability of being applicable to transh pump.
Embodiment
For the utility model is become apparent, hereby with preferred embodiment, and cooperate accompanying drawing to be described in detail below.
As shown in Figure 1, a kind of two-way shaft sealer that is applicable to the high reliability of transh pump that the utility model provides comprises gland 6, and gland 6 is enclosed within outside the pump shaft, leaves the gap between the inwall of gland 6 and the outer peripheral surface of pump shaft.By hexagon socket cap head screw 5 gland 6 is fixedly connected with the pump housing.Form interference fit by O shape circle 4 between gland 6 and the pump housing.The sealing static part is installed in the gap between the outer peripheral surface of the inwall of gland 6 and pump shaft.The sealing static part comprises that a side end face is the stationary ring 2 of seal face.The left and right sides on stationary ring 2 outer peripheral surfaces forms respectively a mounting groove, stationary ring O shape circle 1 is installed respectively in each mounting groove, form support by 1 pair of stationary ring 2 of stationary ring O shape circle, when the shaft sealer that provides when the utility model is received external shock power or vibration, can improve the bearing capacity of stationary ring 2.In the side end face that gland 6 and the pump housing deviate from mutually pressing plate 8 is installed, is locked by hexagon socket cap head screw 7 between pressing plate 8 and the gland 6.Pressing plate 8 is enclosed within stationary ring 2 and is exposed to outside the outer part of gland 6, and its inwall is close to the outer peripheral surface of stationary ring 2, applies pressure towards pump shaft by 8 pairs of stationary rings 2 of pressing plate.When bidirection press changes, by pressing plate 8 so that stationary ring 2 can not dislocate.
Mechanical seal when the sealing static part matches the work of realization pump shaft with the seal rotary parts that are installed in its side.The seal rotary parts comprise rotating ring components 3.1.This rotating ring components 3.1 comprises rotation ring seat 3.1.1, is formed with a circle mounting groove at rotation ring seat 3.1.1 and stationary ring 2 relative ends, has one at its other end and encloses groove.One side end face is that the rotating ring 3.1.3 of seal face is installed in this mounting groove, its with rotation ring seat 3.1.1 between link to each other by plastic sheath 3.1.5 and stop pin 3.1.6.The size of the seal face of rotating ring 3.1.3 can change according to actual conditions, and realizes two way sealed.Be sealed and matched between the seal face of the seal face of rotating ring 3.1.3 and stationary ring 2, by two seal faces are processed, make its planeness and surface roughness reach certain requirement after, can stop the fluid leakage on the mechanical seal sealing surface.Between the inwall of the outer peripheral surface of rotating ring 3.1.3 and rotation ring seat 3.1.1 and between the cell wall of the opposite side end face of rotating ring 3.1.3 and the mounting groove of rotation ring seat 3.1.1 2 the 2nd O shapes circle 3.1.2 are being installed respectively and the 3rd an O shape is enclosed 3.1.4.Wherein, because the interference fit of two the 2nd O shape circle 3.1.2 between rotating ring 3.1.3 and the rotation ring seat 3.1.1, can realize sealing, again can be by the surface friction drag transferring power moment of the 2nd O shape circle 3.1.2, simultaneously, rotating ring 3.1.3 supports the temperature effect that can absorb external impacts and expand with heat and contract with cold by the 2nd O shape circle 3.1.2.
Simultaneously, between the inwall of rotation ring seat 3.1.1 and the outer peripheral surface of pump shaft wedge shape transmission ring 3.10 and retainer 3.9 are installed also, are formed the gap and be provided with the 4th O shape circle 3.4 between the inwall of the outer peripheral surface of retainer 3.9 and rotation ring seat 3.1.1.The end of retainer 3.9 is exposed to outside the rotation ring seat 3.1.1, puts a support ring 3.8 outside this end of retainer 3.9.Rubber neck 3.7 is enclosed within outside the rotation ring seat 3.1.1, and the groove that rubber neck 3.7 will rotate on the ring seat 3.1.1 covers fully, one end and rotation nested connection of ring seat 3.1.1, the other end and 3.9 nested connections of retainer.Support ring 3.8 is between the inwall of the outer peripheral surface of retainer 3.9 and rubber neck 3.7.Support ring 3.8 can increase rotating ring components 3.1 flexible nose balance effect within it.Side at rubber neck 3.7 the other ends is provided with spacer ring assembly 3.12, and spacer ring assembly 3.12 is enclosed within outside the pump shaft, and the one end props up the other end of rubber neck 3.7, and the other end props up the extension on the pump shaft.Wedge shape transmission ring 3.10 and retainer 3.9 all are enclosed within outside the pump shaft, and its inwall is close to the outer peripheral surface of pump shaft.One the 5th O shape circle 3.11 is installed between the outer peripheral surface of the inwall of retainer 3.9 and pump shaft.The end of retainer 3.9 forms interior wedge surface, and the wedge surface of wedge shape transmission ring 3.10 inserts and is somebody's turn to do in the interior wedge surface.Because the effect that adds axial force and spacer ring assembly 3.12 on the pump shaft, fastening force of generation between the interior wedge surface of the wedge surface of wedge shape transmission ring 3.10 and retainer 3.9 and pump shaft is finished the transmission of moment of rotation.
Consist of a relatively space of sealing by rubber neck 3.7 and rotation ring seat 3.1.1, so that the driving mechanism that plastic sheath 3.5 and transmission screw 3.6 consist of, and the gap between rotation ring seat 3.1.1 and the retainer 3.9 avoids the infringement of the shaft sealer that the deposition of seawater silt and seawater derivative provide the utility model, can absorb and cushion external shock power and the vibration that shaft sealer is subject to again.
Plastic sheath 3.5 is positioned at the groove that rotates ring seat 3.1.1 with transmission screw 3.6, will rotate ring seat 3.1.1 by transmission screw 3.6 and be fixedly connected with retainer 3.9.Finished the integrated combination of rotating ring components 3.1 by transmission screw 3.6.Simultaneously, transmission screw 3.6, plastic sheath 3.5 and the groove fit of rotating ring seat 3.1.1 form the soft Contact Transmission of selling.Moment of rotation is passed on the rotating ring 3.1.3, allow rotating ring 3.1.3 and rotation ring seat 3.1.1 rotate synchronously, and owing to being soft Contact Transmission, can protect rotating ring 3.1.3 when device starts, be not vulnerable to the impact of power.
The end face of a side that deviates from mutually with rotating ring 3.1.3 on the cell wall of the mounting groove that rotates ring seat 3.1.1 is fixed with spring pin 3.2.When device had larger axial displacement, spring pin 3.2 can add the stability of big spring 3.3.Have the spring fitting groove at retainer 3.9 with spring pin 3.2 relative position places, spring pin 3.2 parts stretch in the spring fitting groove, spring 3.3 is enclosed within outside the spring pin 3.2, spring 3.3 parts are positioned at the spring fitting groove, and link to each other with retainer 3.9, the end of spring 3.3 another part props up the cell wall of mounting groove.The stack of active force and spring 3.3 active forces by liquid acts on the seal face of the seal face of rotating ring 3.1.3 and stationary ring 2, so that form face pressure between the two together.The elastic force of spring 3.3 is again in conjunction with the 3rd O shape circle 3.1.4 so that the seal face of rotating ring 3.1.3 can remain and the seal face of stationary ring 2 between be sealed and matched.
Claims (6)
1. two-way shaft sealer that is applicable to the high reliability of transh pump, comprise the gland (6) that is connected and fixed with the pump housing, gland (6) is set in outside the pump shaft, between the outer peripheral surface of the inwall of gland (6) and pump shaft, be provided with the sealing static part, be provided with the seal rotary parts of following the pump shaft motion at sealing static part side, seal rotary parts and the formation mechanical seal that matches of sealing static part, it is characterized in that: the sealing static part comprises that a side end face is the stationary ring (2) of seal face, between the inwall of the outer peripheral surface of stationary ring (2) and gland (6), be provided with at least one stationary ring O shape circle (1), side at gland (6) is provided with pressing plate (8), pressing plate (8) and gland (6) are connected and fixed and are set in stationary ring (2), by pressing plate (8) stationary ring (2) are applied pressure towards pump shaft;
The seal rotary parts comprise that a side end face is the rotating ring components (3.1) of seal face, the seal face of the seal face of rotating ring components (3.1) and stationary ring (2) is sealed and matched, outside pump shaft, be arranged with retainer (3.9) and wedge shape transmission ring (3.10), the end of retainer (3.9) forms interior wedge surface, wedge shape transmission ring (3.10) thus wedge surface insert should in produce fastening force in the wedge surface, the inwall of retainer (3.9) and wedge shape transmission ring (3.10) is close to the outer peripheral surface of pump shaft, rotating ring components (3.1) is connected and fixed with retainer (3.9), one end connection for transmission seat (3.9) of spring (3.3), the other end connects rotating ring components (3.1), and the elastic force by spring (3.3) forms seal pressure so that the seal face of rotating ring components (3.1) is close to the seal face of stationary ring (2) all the time.
2. a kind of two-way shaft sealer that is applicable to the high reliability of transh pump as claimed in claim 1 is characterized in that: realize interference fit by O shape circle (4) between described gland (6) and the described pump housing.
3. a kind of two-way shaft sealer that is applicable to the high reliability of transh pump as claimed in claim 1, it is characterized in that: described rotating ring components (3.1) comprises the rotation ring seat (3.1.1) that is sheathed on outside the described pump shaft, be formed with a circle mounting groove in the end of the close described sealing static part of rotation ring seat (3.1.1), the outer peripheral surface of an end that deviates from mutually with described sealing static part in rotation ring seat (3.1.1) has one and encloses groove, transmission screw (3.6) is located at this groove, its end pass that rotation ring seat (3.1.1) is located at described retainer (3.9) thus in will rotate ring seat (3.1.1) and be fixedly connected with described retainer (3.9), one side end face is that the rotating ring (3.1.3) of seal face is located in the mounting groove, rotating ring (3.1.3) is connected and fixed with rotation ring seat (3.1.1), form interference fit by the 2nd O shape circle (3.1.2) and the 3rd O shape circle (3.1.4) respectively between the inwall of the outer peripheral surface of rotating ring (3.1.3) and rotation ring seat (3.1.1) and between the opposite side end face of rotating ring (3.1.3) and the rotation ring seat (3.1.1), described retainer (3.9) is positioned between the outer peripheral surface of inwall and described pump shaft of rotation ring seat (3.1.1), is provided with the 4th O shape between the outer peripheral surface of described retainer (3.9) and the inwall that rotates ring seat (3.1.1) and encloses (3.4).
4. a kind of two-way shaft sealer that is applicable to the high reliability of transh pump as claimed in claim 3, it is characterized in that: outside described rotation ring seat (3.1.1), be arranged with rubber neck (3.7), rubber neck (3.7) covers described groove fully, one end and nested connection of described rotation ring seat (3.1.1), its the other end and nested connection of described retainer (3.9) are provided with support ring (3.8) between the inwall of the outer peripheral surface of described retainer (3.9) and rubber neck (3.7).
5. a kind of two-way shaft sealer that is applicable to the high reliability of transh pump as claimed in claim 3, it is characterized in that: be provided with spring pin (3.2) in described rotation ring seat (3.1.1), described spring (3.3) is set in outside the spring pin (3.2).
6. a kind of two-way shaft sealer that is applicable to the high reliability of transh pump as claimed in claim 1 is characterized in that: realize interference fit by the 5th O shape circle (3.11) between the inwall of described retainer (3.9) and the outer peripheral surface of described pump shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220352136 CN202883454U (en) | 2012-07-19 | 2012-07-19 | Highly-reliable bi-directional shaft sealing device suitable for trash pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220352136 CN202883454U (en) | 2012-07-19 | 2012-07-19 | Highly-reliable bi-directional shaft sealing device suitable for trash pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883454U true CN202883454U (en) | 2013-04-17 |
Family
ID=48074888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220352136 Expired - Lifetime CN202883454U (en) | 2012-07-19 | 2012-07-19 | Highly-reliable bi-directional shaft sealing device suitable for trash pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883454U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748321A (en) * | 2012-07-19 | 2012-10-24 | 上海德宝密封件有限公司 | High-reliability bidirectional axial sealing device applicable for trash pump and having |
| WO2020210464A1 (en) * | 2019-04-10 | 2020-10-15 | A.W. Chesterton Company | Method of forming sealing elements for use in mechanical seal |
-
2012
- 2012-07-19 CN CN 201220352136 patent/CN202883454U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748321A (en) * | 2012-07-19 | 2012-10-24 | 上海德宝密封件有限公司 | High-reliability bidirectional axial sealing device applicable for trash pump and having |
| WO2020210464A1 (en) * | 2019-04-10 | 2020-10-15 | A.W. Chesterton Company | Method of forming sealing elements for use in mechanical seal |
| US11835140B2 (en) | 2019-04-10 | 2023-12-05 | A.W. Chesterton Company | Method of forming sealing elements for use in a mechanical seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |
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| CX01 | Expiry of patent term |