CN109340378A - A kind of automatic impaction stuffing seal - Google Patents
A kind of automatic impaction stuffing seal Download PDFInfo
- Publication number
- CN109340378A CN109340378A CN201811340923.6A CN201811340923A CN109340378A CN 109340378 A CN109340378 A CN 109340378A CN 201811340923 A CN201811340923 A CN 201811340923A CN 109340378 A CN109340378 A CN 109340378A
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- China
- Prior art keywords
- transmission gear
- temperature
- displacement
- control unit
- airtight
- 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.)
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Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 68
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims description 39
- 210000004907 gland Anatomy 0.000 claims description 26
- 230000006835 compression Effects 0.000 claims description 17
- 238000007906 compression Methods 0.000 claims description 17
- 230000008859 change Effects 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000003044 adaptive effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 101100313164 Caenorhabditis elegans sea-1 gene Proteins 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- F16J15/346—Pressing means the pressing force varying during operation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The present invention discloses a kind of automatic impaction stuffing seal, simple and reliable for structure, and can realize automatic operation, the adaptive impaction state for adjusting airtight and watertight padding component.The automatic impaction stuffing seal includes: sealing structure, compresses transmission mechanism and testing agency；By setting testing agency to the on-line checking of stuffing seal state parameter (i.e. control unit monitor filler assembly temperature and hold-down mechanism automatically stroke), and the real-time adaptive adjustment to stuffing seal is realized according to detecting state parameter automatically, improve the automatization level of sealing device, it can guarantee that equipment always belongs to good working order, greatly improved security reliability when equipment real time execution simultaneously.
Description
Technical field
The present invention relates to a kind of sealing devices, and in particular to a kind of automatic impaction stuffing seal.
Background technique
Naval vessel is real mainly by way of manually spanner being used to operate transmission gear with conventional filler sealing device at present
The compression of existing airtight and watertight padding is loosened, and to reach the function of sealing seawater, primary structure is as shown in Figure 1, for applied to ship
The stuffing seal that field stern tube shaft uses, the main operational principle of equipment are as follows: entire sealing device is sleeved on sealing main shaft 109
On (i.e. stern tube shaft), seal casinghousing 102, which is fastened by bolts, to be connected on pressure-resistant next door, and end cover 104 is mounted on by bolt
On seal casinghousing 102, end cover 104 is sleeved on sealing main shaft 109, inner peripheral surface and sealing 109 outer circumference surface of main shaft
Between annular space in be arranged filler assembly 103, filler assembly 103 it is opposite with external dynamic sea 101 one end conflict is sealing
On the inner bottom surface of end cap 104, the via hole on 104 inner bottom surface of end cover is fitted closely with sealing main shaft 109, the other end and compression
Mechanism is opposite, and external dynamic sea 101 realizes sealing to the compression of filler assembly 103 by hold-down mechanism.
The compression operation of the stuffing seal relies primarily on hold-down mechanism realization, and hold-down mechanism is mainly by drive screw
105, parts composition, the drive screw 105 such as drive pinion 107 and transmission gear wheel 108 pass through the cylinder of gland 106
Hole, one end are fixedly mounted on end cover 104, and another end surfaces are helicitic texture, and installation inner hole is respective threaded structure
Drive pinion 107, drive pinion 107 and drive screw 105 arrange multiple, multiple drive pinions on a circle direction
107 mediate with transmission gear wheel 108 simultaneously, final realize one when operating some drive pinion 107 gear wheel 108 being driven to move
Circle drive pinion 107 moves synchronously, and the drive pinion 107 moved synchronously realizes axial displacement on drive screw 105,
Axial movement of the gland 106 on drive screw 105 finally has been pushed, the compression of right filler 103 has been realized or loosens.
, there is following several respects and defect in above-mentioned traditional stuffing seal:
(1) operator need to prepare dedicated operation spanner and carry out rotation operation, large labor intensity to drive pinion.
(2) equipment transmission principle is to operate some drive pinion to drive transmission gear wheel rotation, then drives remaining biography
Dynamic pinion gear moves synchronously, and the final axial movement for realizing gland on drive screw, whole transmission principle is complicated, if in
Between drive mechanism somewhere occur clamping stagnation or drive screw installation concentricity it is bad when will lead to drive failure, can not normal work
Make.
(3) in stuffing seal operational process, post need to be set for a long time at the position, observe packing leaking feelings in real time
Condition, and carry out compression or loosening operation.
(4) in device operational process, filler assembly compresses degree and is not carried out quantitative detection, while also not grasping filler group
Part internal temperature numerical value cannot judge that filler assembly crush is excessive in advance, seal assembly failure of removal caused by temperature rise is excessively high,
Security reliability is poor.
Summary of the invention
In view of this, the present invention provides a kind of automatic impaction stuffing seal, it is simple and reliable for structure, and can realize automatic
Change operation, the adaptive impaction state for adjusting airtight and watertight padding component improves equipment operation while improving operation economy
Performance and security reliability.
The automatic impaction stuffing seal, comprising: packing seal structure and compression transmission mechanism；The filler is close
Seal structure includes seal casinghousing, airtight and watertight padding component and end cover；The compression transmission mechanism is used for the airtight and watertight padding group
The compression of part is loosened；
The compression transmission mechanism includes: transmission gear A, transmission gear B, gland and motor；
Described gland one end is located in the centre bore of the end cover, opposite with the airtight and watertight padding component, and
The gland can move axially in the centre bore of the end cover；The end cover passes through its excircle
The internal screw thread of external screw thread and the transmission gear A inner hole on face screws；The motor output shaft of the motor and transmission gear B are same
Axis is connected, and the transmission gear B is engaged with the transmission gear A；The gland other end and the transmission gear A it
Between ball thrust bearing is installed.
Further include: testing agency, the testing agency include: temperature sensor, displacement sensor and control unit；It is described
Temperature sensor is used to monitor the temperature of airtight and watertight padding component；Institute's displacement sensors are used to measure the axial position of transmission gear A
It moves；The measured value of the temperature sensor and institute's displacement sensors is transferred to described control unit, while the motor
Rotation is also controlled by control unit；
Described control unit internal preset have airtight and watertight padding component temperature change and transmission gear A axial displacement it
Between curved line relation and normal impaction state under the airtight and watertight padding component temperature range；When the survey of the temperature sensor
When the temperature value of amount exceeds the preset temperature range in control unit, described control unit is filled out according to described in Current Temperatures calculating
Material seal assembly restores to temperature variation needed for normal impaction state, and passes through the temperature of its internal airtight and watertight padding component
The temperature variation is converted to the position of transmission gear A by the curved line relation between variation and the axial displacement of transmission gear A
Shifting amount；Then described control unit automatically controls the motor rotation according to the displacement, to pass through the Roller thrust axis
It holds and gland is pushed to be axially moved, in this process the position of transmission gear A described in institute's displacement sensors real-time measurement
Move, when its reach conversion after obtain displacement when, described control unit control motor stalls.
The utility model has the advantages that
(1) the compression transmission mechanism of the tight stuffing seal, can using the automatic impaction transmission mechanism being driven by motor
The manual operation requirement for cancelling conventional filler sealing device, it is horizontal to improve equipment automatization.
(2) on-line checking by setting testing agency to stuffing seal state parameter (i.e. supervise automatically by control unit
Survey the stroke of filler assembly temperature and hold-down mechanism), and the reality to stuffing seal is realized according to detecting state parameter automatically
When adaptively adjust, on the one hand save the working strength of personnel's site observation and adjustment, while can guarantee that equipment always belongs to
Security reliability when equipment real time execution greatly improved in good working order.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of conventional filler sealing device；
Wherein: 101- external dynamic sea, 102- seal casinghousing, 103- filler assembly, 104- end cover, 105- are driven spiral shell
Bar, 106- gland, 107- drive pinion, 108- transmission gear wheel, 109- seal main shaft
Fig. 2 is the structural schematic diagram of stuffing seal of the invention.
Wherein: 1- external dynamic sea, 2- seal casinghousing, 3- temperature sensor, 4- airtight and watertight padding component, 5- displacement sensor branch
Frame, 6- displacement sensor, 7- transmission gear A, 8- end cover, 9- ball thrust bearing, 10- gland, 11- sealing master
Axis, 12- transmission gear B, 13- motor output shaft, 14- motor, 15- control unit
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is described in further detail.
The present embodiment provides a kind of automatic impaction stuffing seal, the working principle of the device is passed by motor driven
Dynamic pinion gear (i.e. transmission gear B12) and transmission gear wheel (i.e. transmission gear A7) rotate in a circumferential direction, and are converted to transmission gear wheel and exist
Axial movement on end cover, and axial movement is transmitted to by gland by ball thrust bearing, it realizes to filler
Work is compressed or loosens, without human intervention, transmission mechanism is simple for the process, high reliablity.
As shown in Fig. 2, the automatic impaction stuffing seal is covered outside sealing main shaft 11, comprising: sealing structure, pressure
Tight transmission mechanism and testing agency；Wherein sealing structure includes seal casinghousing 2, airtight and watertight padding component 4 and end cover 8；It compresses
Transmission mechanism includes: transmission gear A7, transmission gear B12, gland 10 and motor 14；Testing agency includes temperature sensor
3, displacement sensor 6 and control unit 15.
Its connection relationship are as follows: seal casinghousing 2 is connected by bolts on pressure bulkhead, end cover 8 by bolt with it is close
Capsule body 2 fixes as one, and external dynamic sea 1 enters the sky that seal casinghousing 2 and end cover 8 are formed by pressure bulkhead aperture
It is intracavitary.End cover 8 is sleeved on sealing main shaft 11, the annular space between inner peripheral surface and sealing 11 outer circumference surface of main shaft
Interior placement airtight and watertight padding component 4, the one end opposite with external dynamic sea 1 of airtight and watertight padding component 4 contradict the inner bottom surface in end cover 8
On, the via hole on 8 inner bottom surface of end cover is fitted closely with sealing main shaft 11, and the other end is opposite with transmission mechanism is compressed, by close
Envelope filler assembly 4 realizes that sealing main shaft 11 seals from beginning to end, prevents external dynamic sea 1 from entering cabin interior.
Airtight and watertight padding component 4 is compressed or is loosened by the realization of gland 10, specifically: the diameter of gland 10 and sealing
The diameter of bore of end cap 8 matches, by the setting of fit tolerance, gland 10 can in 8 inner hole of end cover flexible axis
To movement, to realize the compression to airtight and watertight padding component 4 or loosen.The outer circle of end cover 8 is provided with external screw thread, with driving cog
The internal screw thread of wheel A7 inner hole screws.The motor output shaft 13 of motor 14 is coaxially connected with transmission gear B12, transmission gear B12 with
Transmission gear A7 engagement.Ball thrust bearing 9, ball thrust bearing 9 are installed between transmission gear A7 and gland 10
On the one hand it rotates under the drive of transmission gear A7, on the other hand arrives the axial force transmission that transmission gear A7 axial displacement generates
On gland 10, gland 10 realizes the movement of axial direction under the action of the axial force.
Compress the working principle of transmission mechanism are as follows: motor 14 is rotated by motor output shaft 13 with nutating gear B12, is passed
Moving gear B12 drives and the rotation of its engaged transmission gear A 7, since transmission gear A7 inner hole internal screw thread is screwed in end cover 8
On outer circle external screw thread, due to the effect of screw thread, when it rotates in a circumferential direction, axial movement can be realized on end cover 8, works as transmission
When gear wheel 7 is axially moved, gland 10 is pushed to be axially moved by ball thrust bearing 9, to realize to sealing
The compression of filler assembly 4 is loosened.
End cover 8 places the temperature sensor being provided at 4 position of airtight and watertight padding component for mounting temperature sensor 3
Hole, temperature sensor 3 are used to monitor the temperature of airtight and watertight padding component 4；Displacement sensor bracket 5 is mounted on sealed end by bolt
8 end face of lid, displacement sensor 6 are mounted on displacement sensor bracket 5, and measurement end corresponds to transmission gear A7 stern end face, are surveyed
Measure its axial displacement value.The measured value of temperature sensor 3 and displacement sensor 6 is transferred to control unit 15, while motor
Rotation is also controlled by control unit 15,15 internal preset of control unit have curved line relation between temperature change and displacement and
The temperature range of airtight and watertight padding component 4 under normal impaction state, the i.e. temperature of airtight and watertight padding component 4 within this temperature range when,
In normal impaction state；When packing seal component 4 compresses, degree is too tight or too loose (due to the change of frictional force, and then to make it
Temperature changes) when, the measurement numerical value of temperature sensor 3 can deviate from the predetermined temperature range inside control unit 15, and control is single
Member calculates packing seal component 4 according to Current Temperatures and predetermined temperature range and restores to temperature change needed for normal impaction state
Amount, and temperature variation is converted to transmission gear A7's by the curved line relation between its internal temperature change and displacement
Displacement (displacement is vector)；Then control unit 15 is rotated according to the automatic driving motor 14 of the displacement, to push
Gland 10 is axially moved；Gland 10 is pushed to carry out axial fortune by ball thrust bearing 9 in transmission gear A7
During dynamic, the displacement of the synchronous detection transmission gear A7 of displacement sensor 6, when the displacement obtained after it reaches conversion, control
Unit 15 processed controls motor 14 and stops operating.
To sum up, the above is merely preferred embodiments of the present invention, it is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (3)
1. a kind of automatic impaction stuffing seal, comprising: packing seal structure and compression transmission mechanism；The packing seal knot
Structure includes seal casinghousing (2), airtight and watertight padding component (4) and end cover (8)；The compression transmission mechanism is filled out for the sealing
Expect the compression of component (4) or loosens；
It is characterized in that, the compression transmission mechanism include: transmission gear A (7), transmission gear B (12), gland (10) and
Motor (14)；
Described gland (10) one end is located in the centre bore of the end cover (8), with airtight and watertight padding component (4) phase
It is right, and the gland (10) can move axially in the centre bore of the end cover (8)；The end cover
(8) it is screwed by the internal screw thread of external screw thread and transmission gear A (7) inner hole on its outer circumference surface；The motor (14)
Motor output shaft (13) with transmission gear B (12) is coaxial is connected, the transmission gear B (12) is nibbled with the transmission gear A (7)
It closes；Ball thrust bearing (9) are installed between the gland (10) other end and the transmission gear A (7).
Further include: testing agency, the testing agency include: temperature sensor (3), displacement sensor (6) and control unit
(15)；The temperature sensor (3) is used to monitor the temperature of airtight and watertight padding component (4)；Institute's displacement sensors (6) are for measuring
The axial displacement of transmission gear A (7)；The measured value of the temperature sensor (3) and institute's displacement sensors (6) is transferred to institute
It states control unit (15), while the rotation of the motor (14) is also controlled by control unit (15)；
Described control unit (15) internal preset has the temperature change of airtight and watertight padding component (4) and the axial position of transmission gear A (7)
The temperature range of the airtight and watertight padding component (4) under curved line relation and normal impaction state between shifting amount；When the temperature
When the temperature value of the measurement of sensor (3) exceeds the preset temperature range in control unit (15), described control unit foundation
Current Temperatures calculate the packing seal component (4) and restore to temperature variation needed for normal impaction state, and by it
Curved line relation between the temperature change of the airtight and watertight padding component (4) in portion and the axial displacement of transmission gear A (7) is by the temperature
Degree variable quantity is converted to the displacement of (7) transmission gear A；Then described control unit (15) automatically controls institute according to the displacement
Motor (14) rotation is stated, to push gland (10) to be axially moved by the ball thrust bearing (9), in the mistake
The displacement of transmission gear A (7) described in displacement sensor described in journey (6) real-time measurement, when it reaches the displacement obtained after conversion
When amount, described control unit (15) control motor (14) stops operating.
2. automatic impaction stuffing seal as described in claim 1, which is characterized in that the end cover (8) is placed close
Envelope is provided with temperature sensor fixing hole at filler assembly (4) position, and the temperature for monitoring airtight and watertight padding component (4) temperature passes
Sensor (3) is located in the temperature sensor fixing hole.
3. automatic impaction stuffing seal as described in claim 1, which is characterized in that solid on the end cover (8)
It is connected to displacement sensor bracket (5), institute's displacement sensors (6) are mounted on displacement sensor bracket (5), measurement end and institute
The end face for stating transmission gear A (7) side is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340923.6A CN109340378B (en) | 2018-11-12 | 2018-11-12 | Automatic packing sealing device compresses tightly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340923.6A CN109340378B (en) | 2018-11-12 | 2018-11-12 | Automatic packing sealing device compresses tightly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109340378A true CN109340378A (en) | 2019-02-15 |
| CN109340378B CN109340378B (en) | 2023-12-01 |
Family
ID=65315007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811340923.6A Active CN109340378B (en) | 2018-11-12 | 2018-11-12 | Automatic packing sealing device compresses tightly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109340378B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271459A (en) * | 2020-03-27 | 2020-06-12 | 中国铁建重工集团股份有限公司 | Device and method for controlling sealing compression amount and readable storage medium |
| CN111550557A (en) * | 2020-05-11 | 2020-08-18 | 山东省章丘鼓风机股份有限公司 | Electric compression packing sealing device and control method thereof |
| CN111787471A (en) * | 2020-07-30 | 2020-10-16 | 惠州市众声音响有限公司 | Rotary mounting structure of loudspeaker and mounting and dismounting method thereof |
| CN112343811A (en) * | 2020-11-06 | 2021-02-09 | 常州拓川泵业科技有限公司 | Plunger metering pump packing compact structure |
| CN114370504A (en) * | 2021-12-13 | 2022-04-19 | 中国船舶重工集团公司第七一九研究所 | Manual-automatic integrated pneumatic transmission device for sealing |
| CN115638105A (en) * | 2022-12-24 | 2023-01-24 | 合肥皖液液压元件有限公司 | Gear pump capable of improving axial force balance |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0131286A2 (en) * | 1983-07-08 | 1985-01-16 | Tanken Seiko Corporation | Mechanical seal for sealing slurry liquid |
| WO1994028336A1 (en) * | 1993-06-01 | 1994-12-08 | Amtec Advanced Measurement, Messtechnischer Service Gmbh | Process and device for the controlled compression of stuffing box or seal packings |
| DE4411613A1 (en) * | 1994-04-02 | 1995-10-05 | Otte Peter | Stuffing box packing for sealing housing and spindle |
| DE29614077U1 (en) * | 1996-08-15 | 1996-09-26 | Fa. Andreas Stihl, 71336 Waiblingen | Tank cap for a filler neck of a container |
| CN1274817A (en) * | 1999-05-24 | 2000-11-29 | 崔正仁 | High-pressure sealing stuffing for magnetic suspending reciprocating compressor |
| CA2547181A1 (en) * | 2006-03-01 | 2007-09-01 | Yano-Tech Inc. | Seal device |
| CN201003611Y (en) * | 2006-12-21 | 2008-01-09 | 中国船舶重工集团公司第七一九研究所 | Pneumatic remote-controlled filler sealing device |
| JP2008286357A (en) * | 2007-05-21 | 2008-11-27 | Sumitomo Heavy Ind Ltd | Sealing mechanism and power transmission device provided with same |
| CN105972217A (en) * | 2016-07-26 | 2016-09-28 | 中国舰船研究设计中心 | Servo-type stern shaft tube emergency sealing device for submersible vehicle |
| CN107444602A (en) * | 2017-08-25 | 2017-12-08 | 中国船舶重工集团公司第七〇九研究所 | A kind of ship stern propulsion plant based on magnetic drives |
-
2018
- 2018-11-12 CN CN201811340923.6A patent/CN109340378B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0131286A2 (en) * | 1983-07-08 | 1985-01-16 | Tanken Seiko Corporation | Mechanical seal for sealing slurry liquid |
| WO1994028336A1 (en) * | 1993-06-01 | 1994-12-08 | Amtec Advanced Measurement, Messtechnischer Service Gmbh | Process and device for the controlled compression of stuffing box or seal packings |
| DE4411613A1 (en) * | 1994-04-02 | 1995-10-05 | Otte Peter | Stuffing box packing for sealing housing and spindle |
| DE29614077U1 (en) * | 1996-08-15 | 1996-09-26 | Fa. Andreas Stihl, 71336 Waiblingen | Tank cap for a filler neck of a container |
| CN1274817A (en) * | 1999-05-24 | 2000-11-29 | 崔正仁 | High-pressure sealing stuffing for magnetic suspending reciprocating compressor |
| CA2547181A1 (en) * | 2006-03-01 | 2007-09-01 | Yano-Tech Inc. | Seal device |
| CN201003611Y (en) * | 2006-12-21 | 2008-01-09 | 中国船舶重工集团公司第七一九研究所 | Pneumatic remote-controlled filler sealing device |
| JP2008286357A (en) * | 2007-05-21 | 2008-11-27 | Sumitomo Heavy Ind Ltd | Sealing mechanism and power transmission device provided with same |
| CN105972217A (en) * | 2016-07-26 | 2016-09-28 | 中国舰船研究设计中心 | Servo-type stern shaft tube emergency sealing device for submersible vehicle |
| CN107444602A (en) * | 2017-08-25 | 2017-12-08 | 中国船舶重工集团公司第七〇九研究所 | A kind of ship stern propulsion plant based on magnetic drives |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271459A (en) * | 2020-03-27 | 2020-06-12 | 中国铁建重工集团股份有限公司 | Device and method for controlling sealing compression amount and readable storage medium |
| CN111550557A (en) * | 2020-05-11 | 2020-08-18 | 山东省章丘鼓风机股份有限公司 | Electric compression packing sealing device and control method thereof |
| CN111787471A (en) * | 2020-07-30 | 2020-10-16 | 惠州市众声音响有限公司 | Rotary mounting structure of loudspeaker and mounting and dismounting method thereof |
| CN112343811A (en) * | 2020-11-06 | 2021-02-09 | 常州拓川泵业科技有限公司 | Plunger metering pump packing compact structure |
| CN112343811B (en) * | 2020-11-06 | 2022-04-05 | 常州拓川泵业科技有限公司 | Plunger metering pump packing compact structure |
| CN114370504A (en) * | 2021-12-13 | 2022-04-19 | 中国船舶重工集团公司第七一九研究所 | Manual-automatic integrated pneumatic transmission device for sealing |
| CN115638105A (en) * | 2022-12-24 | 2023-01-24 | 合肥皖液液压元件有限公司 | Gear pump capable of improving axial force balance |
| CN115638105B (en) * | 2022-12-24 | 2023-04-11 | 合肥皖液液压元件有限公司 | Gear pump capable of improving axial force balance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109340378B (en) | 2023-12-01 |
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