CN209704557U - A kind of development machine internal spraying grease differential pressure type active sealing device - Google Patents
A kind of development machine internal spraying grease differential pressure type active sealing device Download PDFInfo
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- CN209704557U CN209704557U CN201920481901.5U CN201920481901U CN209704557U CN 209704557 U CN209704557 U CN 209704557U CN 201920481901 U CN201920481901 U CN 201920481901U CN 209704557 U CN209704557 U CN 209704557U
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Abstract
A kind of development machine internal spraying grease differential pressure type active sealing device belongs to development machine internal spraying water-stop technical field, including traditional rotation water sealing device, oil feeding device and oil duct.Traditional rotation water sealing device includes matching water pond, sealing ring and main shaft.Sealing ring connect to form three annular compartments with main shaft and with water pond, and intermediate cavity is water cavity, and two side cavities are oil pocket.Water cavity is used to pass through atomisation pressure water in the utility model, the oil pocket of two sides is for storing lubricating oil, from oil feeding device to the oil pocket fuel feeding of two sides and pressure is kept, lubricating oil immerses the function of realizing realizing active sealing in the pressure water that sealed friction surface is formed in oil film isolation barrier water cavity.As oil feeding device, the pressure ratio of lubricating oil and water can flexibly be set as needed for hydraulic cylinder and piston with rod.Spray water carries pressure, and oil pressure can be realized without external power supply and hydraulic pressure automatic synchronization fluctuates, and has Close loop servo control characteristic, low in energy consumption.
Description
Technical field
The utility model belongs to development machine internal spraying water-stop technical field, especially relates to a kind of development machine internal spraying
Grease differential pressure type active sealing device.
Background technique
Underground coal mine dust exceeding is one of main harm, and the safety accidents such as can set off an explosion are also that pneumoconiosis morbidity is former
Because, and dust main source is to adopt, dig work surface, especially development machine work surface and be in tunnel cecum, dust is easy accumulation, institute
It with regulation in " safety regulations in coal mine ", must open inside and outside spraying when tunneling machine operation, be arranged in cutterhead top nozzle at this time with cutting
Head is cut to rotate and spray water mist realization depositing dust, cooling pick, spark-extinguishing function.
However, internal spraying is tended not to as the maximally efficient means of depositing dust using tracing it to its cause in headwork at present
The mainly existing rotation water sealing device service life is shorter and can not be expected, and the universal service life only has 3~30 days, and being unable to satisfy makes
Use demand.And pressure water causes emulsification of lubricant to fail once leaking and can also enter in lubricating oil, causes accident.Analysis failure
Reason: 1, it is mainly seal ring friction surface insufficient lubrication lead to premature abrasion, is smeared when only relying on installation or periodically filling lubricates
Oil is unable to satisfy real-time lubricating requirement；2, impurities in water fine particle etc., which is easily accessible sealed friction surface, causes abrasion to aggravate；3,
Rubbing surface is in dry condition when anhydrous operation, and rubbing surface heat gathers temperature and increases, and abrasion aggravation surface carbonation causes close
Envelope failure.
Therefore there is an urgent need for a kind of novel technical solutions in the prior art to solve the problems, such as this.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of development machine internal spraying grease differential pressure type realizing active sealings
Device is used to solve the shorter technical problem of internal spraying rotation water sealing device service life in the prior art.
A kind of development machine internal spraying grease differential pressure type active sealing device, including match water pond and sealing ring, the sealing ring
Four are provided with, four sealing rings are successively sleeved on the outside of the main shaft of development machine, four sealing rings and main shaft and water distribution dish type
At three annular compartments, wherein intermediate annular compartment is water cavity, and the annular compartment of two sides is oil pocket；The one of the water cavity
It holds and is connect with the water channel with water pond, the other end of water cavity and the inlet opening of main shaft connect；The water channel is connect with water supplying pipe；
A kind of development machine internal spraying grease differential pressure type active sealing device further includes oil feeding device and oil duct, described
The inside with water pond is arranged in oil duct, and one end of oil duct is connect with oil pocket, and the other end of oil duct is supplied by fuel feed pump and lubricating oil
To the oil outlet connection of device.
The oil feeding device includes hydraulic cylinder, piston with rod, check valve and repairing pipe, the inside of the hydraulic cylinder
It is provided with piston with rod, the inside of hydraulic cylinder is divided into hydraulic cylinder oil pocket and hydraulic cylinder water cavity by piston with rod；The hydraulic cylinder oil
The tailpiece of the piston rod of piston with rod is arranged in chamber；The input end of the fuel feed pump is fixedly connected with the outlet of threeway I；The threeway I
The first import connect with hydraulic cylinder oil pocket by pipeline, the second import of threeway I passes through the outlet connection of pipeline and check valve；
The import of the check valve is connect by repairing pipe with slippage pump；
The input end connection atomizing pump or ground static pressure water of the water supplying pipe, the outlet end of water supplying pipe and the import of threeway II
It is fixedly connected；The first outlet of the threeway II is connect by pipeline with water channel, and the second outlet of threeway II passes through pipeline and liquid
Cylinder pressure water cavity is fixedly connected.
Through the above design, the utility model can be brought the following benefits:
One, safety is good: no electric appliance is not related to explosion-proof, suitable underground use.
Two, high reliablity:
1, seal form is changed from passive to active, i.e., rubbing surface becomes lubricating oil active isolation from the intrusion of Passive Defence water,
The hidden danger that multiple-sealed ring is captured one by one by pressure water in current seal form is eliminated, leak is fundamentally solved and spreads and sinks in the asking of water
Topic.
2, lubricating oil and the strong Ratio invariableness of hydraulic pressure and be slightly larger than water, it is ensured that zero leakage.
3, lubricating oil is synchronous with water fluctuation of pressure, constantly ensures sealing.
Three, the service life is long:
1, sealing ring, which lubricates, is improved, and becomes oil lubrication from water lubrication, and abrasion reduces, and reduces calorific value while extending close
The seal ring service life；
2, hydraulic cylinder piston walking slowly, is far below conventional applying working condition without having to worry about life problems.
Four, lower power consumption
1, seal ring friction surface lubrication improves, and reduces torque, lower power consumption.
2, hydraulic cylinder piston walking is extremely slow, and power consumption is negligible.
Five, consumption reduces
1, sealing ring lubrication improves, and the service life substantially extends, and reduces replacement frequency, saves accessory and working hour.
2, lubricating oil viscosity it is big, with excellent leakproofness, easy to leak, consumption be not negligible.
Six, the simple low cost of structure: sealing ring belongs to standard component, the technology maturations such as hydraulic cylinder, piston, oil pipe, and material is easy
It must be easily worked.
Detailed description of the invention
The utility model is further described below in conjunction with the drawings and specific embodiments:
Fig. 1 is a kind of structural schematic diagram of development machine internal spraying grease differential pressure type active sealing device of the utility model.
Fig. 2 is device in a kind of embodiment of development machine internal spraying grease differential pressure type active sealing device of the utility model
Structural schematic diagram.
In figure, 1- matches water pond, 2- sealing ring, 3- main shaft, 4- water cavity, 5- oil pocket, 6- water channel, the inlet opening 7-, 8- lubricating oil
Feedway, 9- oil duct, 10- water supplying pipe, 11- fuel feed pump, 801- hydraulic cylinder, 802- piston with rod, 803- check valve, 804- are mended
Oil pipe, 805- hydraulic cylinder oil pocket, 806- hydraulic cylinder water cavity, 807- threeway I, 808- threeway II.
Specific embodiment
As shown, a kind of development machine internal spraying grease differential pressure type active sealing device includes traditional rotation water tight enclosure
It sets, oil feeding device 8 and oil duct 9, traditional rotation water sealing device include matching water pond (or water seal shell), sealing ring
And main shaft.Oil feeding device 8 includes hydraulic cylinder 801, piston with rod 802, check valve 803 and repairing pipe 804, with rotation water
Sealing device is used cooperatively,
It is described with four sealing rings 2 are provided on water pond 1, four sealing rings 2 are successively inserted in and hold tightly in the outer of main shaft 3
Portion, main shaft 3 are internally provided with inlet opening 7；The sealing ring 2 connect three annular compartments of formation with main shaft 3, with water pond 1, intermediate
Chamber is water cavity 4, and two side cavities are oil pocket 5；The water cavity 4 is connect with the inlet opening 7 of main shaft 3 and water channel 6 respectively；The water
Road 6 is connect with water supplying pipe 10；The oil pocket 5, which passes through to be arranged in, to be connect with the oil duct 9 in water pond 1 with fuel feed pump 11.
A kind of development machine internal spraying grease differential pressure type realizing active sealing method, utilizes a kind of development machine internal spraying grease
Differential pressure type active sealing device, includes the following steps and following steps sequentially carry out,
Step 1: oil feeding device 8 for lubricating oil and keeps pressure into the oil pocket 5 of 4 two sides of water cavity simultaneously；
Step 2: the pressure in oil pocket 5 is kept to be greater than the pressure in water cavity 4；
Stop the pressure water in water cavity 4 to immerse oil pocket 5 Step 3: lubricating oil forms oil film in sealed friction surface, realizes master
Dynamic sealing.
Oil feeding device 8 supplies lubricating oil to oil pocket 5 in the step 1 method particularly includes: lubricating oil supply dress
It sets 8 and includes hydraulic cylinder 801, piston with rod 802, check valve 803 and repairing pipe 804,
The pressure water of water supplying pipe 10 respectively enters hydraulic cylinder water cavity 806 and the water channel 6 with water pond 1, liquid by threeway II 808
Pressure water in cylinder pressure water cavity 806 pushes piston with rod 802 to generate in pressure conduction to hydraulic cylinder oil pocket 805, by hydraulic cylinder oil
Lubricating oil pressurization is delivered to the oil duct 9 with water pond 1 through fuel feed pump 11 in chamber 805, then arrives in oil pocket 5, in hydraulic cylinder oil pocket 805
Pressure fluctuation synchronous with the pressure of supply water of water supplying pipe 10,
Slippage pump by repairing pipe 804 via check valve 803 make-up oil into hydraulic cylinder oil pocket 805.
The calculation formula of hydraulic cylinder the oil pocket 805 lubricating oil pressure and the strong ratio of hydraulic pressure are as follows: oil pressure is strong, and/hydraulic pressure is strong=lives
Fill in cross-sectional area/(piston cross-section face area-cross section of the piston rod area).
Embodiment:
The oil feeding device 8 includes hydraulic cylinder 801, piston with rod 802, check valve 803 and repairing pipe 804, institute
That states hydraulic cylinder 801 is internally provided with piston with rod 802, and the inside of hydraulic cylinder 801 is divided into hydraulic cylinder oil pocket by piston with rod 802
805 and hydraulic cylinder water cavity 806；The input end of the fuel feed pump 11 is fixedly connected with the outlet of threeway I 807；The threeway I 807
The first import connect with hydraulic cylinder oil pocket 805 by pipeline, the second import of threeway I 807 passes through pipeline and check valve 803
Outlet connection；The import of the check valve 803 is connect by repairing pipe 804 with slippage pump；
The input end of the water supplying pipe 10 is connect with atomizing pump, and outlet end is fixedly connected with the import of threeway II 808；It is described
The first outlet of threeway II 808 is connect by pipeline with water channel 6, and the second outlet of threeway II 808 passes through pipeline and hydraulic cylinder water
Chamber 806 is fixedly connected.
A kind of development machine internal spraying grease differential pressure type realizing active sealing method are as follows: water cavity 4 is used for through atomisation pressure water, two sides
Oil pocket 5 for storing lubricating oil, fuel feeding and keep pressure into the oil pocket 5 of two sides from oil feeding device 8, lubricating oil exists
The pressure water that sealed friction surface is formed in oil film isolation barrier water cavity 4 immerses the function of realizing realizing active sealing.
The fuel feeding pressure of the oil feeding device 8 is greater than the water supply pressure of water supplying pipe.
Work step:
Lubricating oil, development machine are expired into the filling such as the annular oil cavity 5, hydraulic cylinder oil pocket 805, fuel feed pump 11 of matching water pond 1 in advance
Pressure water is respectively enterd through threeway II 808 with the water channel 6 and hydraulic cylinder water cavity in water pond 1 by water supplying pipe 10 when start-up operation
806.Pressure water into water channel 6 reaches cutterhead nozzle atomization ejection by the inlet opening 7 of main shaft 3；Enter liquid at the same time
Pressure water in cylinder pressure water cavity 806 pushes 802 uplink of piston with rod to generate pressure to lubricating oil in hydraulic cylinder oil pocket 805, is produced
Lubricating oil of the raw pressure via fuel feed pump 11 and the conduction of oil duct 9 into the annular oil cavity 5 with water pond 1, lubricating oil is in seal friction
Face forms oil film isolation and pressure water and impurity is stopped to invade sealed friction surface.Pressure is strong greater than hydraulic pressure at this time for lubricating oil, reaches pressure
Power water zero leaks purpose, and consumed lubricating oil is supplemented by repairing pipe 804, piston downlink when supplement, it is full it is oily after by check valve
803 automatic reverse lockings, repairing terminate.
Liquid transfering pressure is calculated according to Pascal's law, pressure according to formula P=F/S, and P is pressure, and F is pressure
Power, S are forced area.Hydraulic cylinder water cavity 806 is located at the piston flat surface side of piston with rod 802 in Fig. 2, and hydraulic cylinder oil pocket 805
In the piston rod side of piston with rod 802, then lubricating oil pressure POilWith the strong P of hydraulic pressureWaterThe calculation formula of ratio is POil/PWater=S/ (S-
SBar), wherein S is piston cross-section face area, SBarFor cross section of the piston rod area.By formula it can be seen that the strong > hydraulic pressure of oil pressure is strong,
Lubricating oil pressure POilWith the strong P of hydraulic pressureWaterRatio size is related with diameter of piston rod.Lubrication pressure can be realized in adjustment diameter of piston rod
Strong POilWith the strong P of hydraulic pressureWaterThe adjustment of ratio.
Claims (2)
1. a kind of development machine internal spraying grease differential pressure type active sealing device, including match water pond (1) and sealing ring (2), it is described close
Seal ring (2) is provided with four, and four sealing rings (2) are successively sleeved on the outside of the main shaft (3) of development machine, four sealing rings and master
Axis (3) and with water pond (1) formed three annular compartments, wherein intermediate annular compartment be water cavity (4), the annular compartment of two sides
It is oil pocket (5)；One end of the water cavity (4) is connect with the water channel (6) with water pond (1), the other end and main shaft of water cavity (4)
(3) inlet opening (7) connection；The water channel (6) connect with water supplying pipe (10)；It is characterized in that: further including oil feeding device
(8) it is arranged with oil duct (9), the oil duct (9) in the inside for matching water pond (1), one end of oil duct (9) is connect with oil pocket (5), oil duct
(9) the other end is connect by fuel feed pump (11) with the oil outlet of oil feeding device (8).
2. a kind of development machine internal spraying grease differential pressure type active sealing device according to claim 1, it is characterized in that: described
Oil feeding device (8) includes hydraulic cylinder (801), piston with rod (802), check valve (803) and repairing pipe (804), described
Hydraulic cylinder (801) is internally provided with piston with rod (802), and the inside of hydraulic cylinder (801) is divided into hydraulic by piston with rod (802)
Cylinder oil pocket (805) and hydraulic cylinder water cavity (806)；Piston rod of hydraulic cylinder oil pocket (805) setting in piston with rod (802)
End；The input end of the fuel feed pump (11) is fixedly connected with the outlet of threeway I (807)；First import of the threeway I (807)
It is connect by pipeline with hydraulic cylinder oil pocket (805), the second import of threeway I (807) passes through the outlet of pipeline and check valve (803)
Connection；The import of the check valve (803) is connect by repairing pipe (804) with slippage pump；
The input end connection atomizing pump or ground static pressure water of the water supplying pipe (10), the outlet end of water supplying pipe (10) and threeway II
(808) import is fixedly connected；The first outlet of the threeway II (808) is connect by pipeline with water channel (6), threeway II
(808) second outlet is fixedly connected by pipeline with hydraulic cylinder water cavity (806).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920481901.5U CN209704557U (en) | 2019-04-11 | 2019-04-11 | A kind of development machine internal spraying grease differential pressure type active sealing device |
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| CN201920481901.5U CN209704557U (en) | 2019-04-11 | 2019-04-11 | A kind of development machine internal spraying grease differential pressure type active sealing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854241A (en) * | 2019-04-11 | 2019-06-07 | 吉林省泰嘉矿业设备有限公司 | A kind of development machine internal spraying grease differential pressure type active sealing device and method |
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2019
- 2019-04-11 CN CN201920481901.5U patent/CN209704557U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854241A (en) * | 2019-04-11 | 2019-06-07 | 吉林省泰嘉矿业设备有限公司 | A kind of development machine internal spraying grease differential pressure type active sealing device and method |
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