CN209369805U - External spraying automatic pressure augment system built in coalcutter - Google Patents
External spraying automatic pressure augment system built in coalcutter Download PDFInfo
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- CN209369805U CN209369805U CN201920007972.1U CN201920007972U CN209369805U CN 209369805 U CN209369805 U CN 209369805U CN 201920007972 U CN201920007972 U CN 201920007972U CN 209369805 U CN209369805 U CN 209369805U
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Abstract
The utility model relates to external spraying automatic pressure augment systems built in a kind of coalcutter, including the built-in oil sump being mounted on coalcutter fuselage, filter, duplex gear pump, oil circuit valve group, two position three-way valve and pump motor, oil sump oil outlet is sequentially connected filter and duplex gear pump, the oil outlet of duplex gear pump two pumps is separately connected oil circuit valve group oil inlet and valve group oil inlet is turned up in coalcutter, oil circuit valve group oil outlet connects oil sump oil return opening and the second oil inlet of two position three-way valve, two position three-way valve first, third oil inlet is separately connected the motor oil inlet and oil sump oil return opening of pump motor, the motor oil outlet of pump motor connects oil sump oil return opening, the pump water inlet mouth of spray water pressure water mouth connection two position three-way valve hydraulic control mouth and pump motor, pump motor pumps out mouth of a river connection nozzle water inlet.The utility model, which can carry out Automatic-boosting to the spray water of rocker arm of coal mining machine, can be used for the mining operations of coal, bauxite etc. to obtain high dust reduction rate, and nozzle is not easy to be blocked by coal dust.
Description
Technical field
The utility model relates to a kind of automatic pressure augment systems for coal miner spray, belong to coalcutter dust control technologies
Field.
Background technique
When coalcutter underground work, coal wall is impacted using the helix drum on rocker arm, coal seam is crushed by the pick on roller
Hit down, thereby produce a large amount of coal dusts, with should coalcutter for when exploiting other mineral, such as bauxite can equally to be generated
Corresponding mine dust.On the one hand a large amount of coal dust hinders the sight of coalcutter driver, causes driver that can not see roller, hydraulic support clearly
Positional relationship between coal wall interferes normal production；On the other hand, dust is seriously threatened by after in field worker suction body
Health.Therefore it must adopt an effective measure and working face coal dust is prevented and treated.
General coal working face is by rocker arm of coal mining machine and roller by coalcutter coal breakage, the coal dust for generation of coalingging
Nozzle carries out spraying inhibition, and close to coal dust source of generation, one coal dust occurs can effectively carry out clearly nozzle location at two for this
It removes, effect is obvious, but in the actual production process, and nozzle is often because spraying water pressure not enough causes to be blocked by coal ash, if dimension
Shield dynamics is inadequate, will lead to amount of water sprayed reduction, and coal dust inhibits unobvious, there is an urgent need to improve nozzle spray pressure, prevents from blocking,
Keep spraying water.
Some coal mines are mounted with the spraying device of external on coalcutter at present, additionally increase control in addition to coalcutter
Device, water tank, booster pump etc., these equipment are mounted on other than coalcutter fuselage, such as on equipment train, the walking of such coalcutter and
More sebific ducts will be pulled in progradation, be caused cable clamp bending radius to increase, be reduced machine space, it is in addition outer on fuselage
The water injector of dew and glue tube capacity is sent easily to be injured by a crashing object by coal breakage and worn by coal petrography.
Summary of the invention
For the above problem for solving the prior art, the utility model provides external spraying Automatic-boosting built in a kind of coalcutter
System can carry out Automatic-boosting to the spray water of rocker arm of coal mining machine, to obtain high dust reduction rate, and nozzle is not easy by coal dust
Blocking.
The main technical schemes of the utility model have:
External spraying automatic pressure augment system built in a kind of coalcutter, including the built-in oil sump being mounted on coalcutter fuselage, mistake
The oil outlet of filter, duplex gear pump, oil circuit valve group, two position three-way valve and pump motor, the oil sump successively connects through oil pipe pipeline
The filter and duplex gear pump are connect, two pumps of the duplex gear pump respectively have independent oil inlet and oil outlet,
The oil outlet of two pumps is separately connected the oil inlet of the oil circuit valve group and the oil inlet of coalcutter height-regulating valve group through oil pipe pipeline,
The oil outlet of the oil circuit valve group through oil pipe pipeline simultaneously connect the oil sump oil return opening and the two position three-way valve second
Oil inlet, horse of the first oil inlet and third oil inlet of the two position three-way valve respectively through pump motor described in oil pipe piping connection
Up to the oil return opening of oil inlet and the oil sump, the motor oil outlet of the pump motor is through the oil return of oil sump described in oil pipe piping connection
Mouthful, the two position three-way valve is the pilot operated directional control valve of spring reset, and the spray water pressure water mouth of coalcutter is same through water pipe line
When connect the hydraulic control mouth of the two position three-way valve and the pump water inlet mouth of the pump motor, the pump motor pumps out the mouth of a river through water pipe
Piping connection is located at the water inlet of the nozzle on rocker arm of coal mining machine, when the hydraulic control mouth of the two position three-way valve works, first into
Hydraulic fluid port and the second oil inlet communicate, and obstructed with third oil inlet, and otherwise, the second oil inlet and third oil inlet communicate, and with
First oil inlet is obstructed.
Water route valve is further preferably connected on the water pipe line of the pump motor pumped out between the mouth of a river and the nozzle inlet
Group is mounted on coalcutter fuselage built in the water route valve group.
First pressure gauge and the first overflow valve can be installed in the water route valve group.
The duplex gear pump can be by the height-regulating motor driven of coalcutter.
Second pressure gauge and the second overflow valve can be installed in the oil circuit valve group.
The nozzle dispersion is arranged on the left rocker arm and right rocker arm of coalcutter, and the outlet pressure of the nozzle is preferably
8MPa。
The water outlet diameter of the nozzle can be 0.5mm.
The water pipe line uses two layers of braided steel wire rubber tube of latus rectum φ 13, and the oil pipe pipeline uses latus rectum φ 10
Two layers of braided steel wire rubber tube.
In addition to nozzle, other each component parts are installed in the right tractive unit of coalcutter fuselage.
The two position three-way valve includes valve rod, valve body and spring, the valve rod in the valve body with the valve body slides
Cooperation, the spring are mounted on the left end of the valve rod, and the right end of the valve rod is connected with piston, and piston is located at by valve body and end
It covers in closed hydraulic control medium chamber, the valve interior wall of piston and the chamber is slidably matched, and the end cap is equipped with water hole, the water
Hole is configured to the hydraulic control mouth, and first oil inlet, the second oil inlet and third oil inlet right-to-left are successively provided with institute
It states on valve body, and its inner end is communicated with three valve body annular grooves on the valve body respectively, about the valve rod is equipped with
Valve rod annular groove, when the valve rod is in right working position, annular groove is connected to second oil inlet and third oil inlet on the left of valve rod
Respectively corresponding valve body annular groove, when the valve rod be in left station, valve rod right circular slot the first oil inlet of connection and the
The respective corresponding valve body annular groove of two oil inlets.
The beneficial effects of the utility model are:
The utility model improves outlet pressure when external spraying water is sprayed by swing arm nozzles by Automatic-boosting, significantly mentions
High coal dust prevents efficiency, overcomes susceptible to plugging problem by spraying.
External spraying water connects two position three-way valve and pump motor simultaneously, and the valve rod in two position three-way valve has outer spray in water route sebific duct
When fog, respective valve position is slided into, hydraulic oil enters pump motor, and the external spray water of driving pump motor is pressurized, anhydrous in the sebific duct of water route
When, valve rod resets, and hydraulic oil returns to oil sump, and pump motor do not work, and has not only realized the Automatic-boosting function to spray water, but also can be with
Prevent pump motor idle running from burning out.By linking up the presence or absence of pressure charging system and spray water, realized using two position three-way valve
Nozzle plenum atomizing de-dusting and pressurization automation on rocker arm.
All components of pressure charging system are built on coalcutter fuselage, are not laid with pipeline additionally, are not increased power and water additionally
Source is not take up lane space, compact-sized, connection and reasonable arrangement.
Set duplex gear pump for gear pump indispensable on coalcutter, a pump be coalcutter itself height-regulating oil circuit and
Brake circuit provides power fluid force feed, and a pump provides power fluid force feed for pressure charging system, it is automatic to simplify spray water well
Pressure charging system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the automatic pressure augment system of the utility model；
Fig. 2 is the structural schematic diagram of the two position three-way valve in Fig. 1.
Appended drawing reference:
The left rocker arm of 1-；2- coalcutter；3- spray water；4- oil sump；5- filter；The right tractive unit of 6-；The right rocker arm of 7-；8- spray
Mouth；9- water pipe line；10- two position three-way valve；Valve group is turned up in 11-；12- oil pipe pipeline；13- duplex gear pump；14- pump motor；
The water route 15- valve group；16- oil circuit valve group；17- spring；18- valve body；19- valve rod；The water hole 20-.
Specific embodiment
The utility model discloses external spraying auto-increasing pressure built in a kind of coalcutter, be by atomisation pressure moisture be two
Road controls the commutation of pilot operated directional control valve all the way as the hydraulic control medium of pilot operated directional control valve, and then controls the work of oil motor and stop
Only, when the control logic of pilot operated directional control valve is that hydraulic control mouth works, operating position locating for pilot operated directional control valve is that oil motor is made to work
Position, drive water pump with oil motor, water pump made to work and stop together with oil motor, using water pump by another way spraying pressure
The nozzle of the built-in external spraying device of coalcutter is conveyed to after the pressurization of power water, pilot operated directional control valve, oil motor and water pump is all built-in
In on the fuselage of coalcutter.
When starting is spraying, hydraulic control mouth starts to play a role, and pilot operated directional control valve commutation, hydraulic oil drives oil motor to start work
Make, oil motor drives pump working, and water pump, which does work to another way atomisation pressure water, to pressurize and send to nozzle, the outlet pressure of nozzle
It improves, spray nozzle clogging can be prevented well, and keep enough spraying waters.Once spraying function is closed, without atomisation pressure
Water outflow, the pilot operated directional control valve are not achieved cracking pressure and reset, and hydraulic oil flows back to oil sump through pilot operated directional control valve, because of hydraulic oil
Oil motor is not entered back into, oil motor stops working after running out of steam, and water pump stops therewith because losing this power source of oil motor,
Also enter water pump without atomisation pressure water simultaneously, the Automatic-boosting of atomisation pressure water is also just automatically stopped.
Pilot operated directional control valve, oil motor and water pump are all built on the fuselage of coalcutter, realize " built-in " of spraying device,
Make to nor affect on the bending radius of original cable clamp without pulling more sebific ducts in coalcutter walking and progradation.And
And " built-in " can be effective protection spraying device and to send glue pipe to injure by a crashing object and wear from coal breakage.
To realize the above method, the utility model discloses external spraying automatic pressure augment systems, such as Fig. 1 built in a kind of coalcutter
It is shown, including the built-in oil sump 4 being mounted on coalcutter fuselage, filter 5, duplex gear pump 13, oil circuit valve group 16, two three
The oil outlet of port valve 10 and pump motor 14, the oil sump is sequentially connected the filter and duplex gear pump through oil pipe pipeline 12,
Two pumps of the duplex gear pump respectively have independent oil inlet and oil outlet, and the oil outlet of two pumps is through oil pipe pipeline point
The oil inlet of valve group 11 is turned up in the oil inlet and coalcutter that do not connect the oil circuit valve group, and the oil outlet of the oil circuit valve group is through oil
Pipe pipeline 12 connects the oil return opening of the oil sump and the second oil inlet of the two position three-way valve simultaneously, the two position three-way valve
First oil inlet and third oil inlet connect the motor oil inlet and the oil sump of the pump motor through oil pipe pipeline 12 respectively
Oil return opening, the motor oil outlet of the pump motor connect the oil return opening of the oil sump through oil pipe pipeline 12.The two position three-way valve
It is the pilot operated directional control valve of spring reset, the 3 pressure water mouth of spray water of coalcutter connects described two three through water pipe line 9 simultaneously
The mouth of a river that pumps out of the hydraulic control mouth of port valve and the pump water inlet mouth of the pump motor, the pump motor is located at coal mining through water pipe line connection
The water inlet of nozzle 8 on machine rocker arm.When the hydraulic control mouth of the two position three-way valve works, the first oil inlet and the second oil inlet
It communicates, and obstructed with third oil inlet, otherwise, the second oil inlet and third oil inlet communicate, and obstructed with the first oil inlet.
Oil sump 4 is equipped with the 2 wear-resistant anti-wear hydraulic oil of common N100 of coalcutter, and gear pump will be filtered by filter 5
It is respectively delivered to that valve group and oil circuit valve group, hydraulic oil the changing through two position three-way valve of oil circuit valve group output is turned up after hydraulic oil extraction
It is transported to pump motor or oil sump to control, the commutation control of two position three-way valve has spray according to whether having spray water at its hydraulic control mouth
When fog, hydraulic control mouth works, and hydraulic oil is transported to pump motor, otherwise flows back to oil sump, direct off-load.Hydraulic oil is transported to pump horse
It reaches, pump motor work is pressurized another way spray water, pressurized high pressure water is respectively delivered to left rocker arm 1 and right rocker arm
7, it is sprayed through nozzle 8, atomizing de-dusting processing is carried out to the coal dust that coalcutter 2 generates.Spray water is sprayed after pressurization from nozzle 8
Speed and flow out greatly improves, and can prevent from being blocked by coal ash, and extends spraying mist torch, expands mist torch and rolls to coal cutting
The coverage area in cylinder dust region.
Nozzle is mounted on left rocker arm and right rocker arm, oil sump, filter, duplex gear pump, be turned up valve group, oil circuit valve group,
Two position three-way valve and pump motor are mounted in the right tractive unit 6 of coalcutter 2 by water pipe line, oil pipe the pipeline arrangement that is connected, and are become
The supercharging device of machine-carried type reduces coalcutter 2 and external connecting line.
The duplex gear pump is the parallel arrangement of two pumps, and two pumps are individually worked at the same time, do not interfere with each other, the specified row of each pump
Amount is 8ml/r.The duplex gear pump is connected by the height-regulating motor output shaft on pump connection component and the right tractive unit 6 of coalcutter
It connects, by height-regulating motor driven.Height-regulating power of motor is 10kW, and duplex gear pump output hydraulic pressure oil is supplied respectively by oil pipe pipeline 12
To height-regulating valve group 11 and oil circuit valve group 16.It is the lifting and braking that coalcutter is used to control left rocker arm 1, right rocker arm 7 that valve group, which is turned up,
What device was opened, power oil is provided for the height-regulating circuit of coalcutter 2 and brake circuit.Oil circuit valve group is to provide power for pump motor
Oil.
Pump motor 14 includes water pump and motor, and motor is connected directly with water pump, compact-sized, small in size, between without pipeline
Connection.Water pump structure is plunger pump.Hydraulic oil enters motor, and drive motor does work to water pump, spray of the water pump to coming in from entrance
Fog acting is flowed out after water pressurization from outlet, and discharge pressure is higher than intake pressure.Pump motor 14 is according to the flow of nozzle, spraying
The discharge capacity Selection and Design of water pressurization value and gear pump 13.Pump motor 14 preferably uses following parameter: the rated pressure of water pump for
15MPa, metered flow 19.6l/min, the metered flow of motor are 15l/min, rated pressure 14MPa, and rated power is
3.7kW。
Water route valve is further preferably connected on the water pipe line 9 of the pump motor pumped out between the mouth of a river and the nozzle inlet
Group 15, the water route valve group is also built-in to be mounted on coalcutter fuselage, is preferably mounted in right tractive unit.
First pressure gauge and the first overflow valve, the pressurization of first pressure gauge real-time display can be installed in the water route valve group
The pressure of spray water afterwards, first overflow valve provide high voltage protective function, and set pressure is preferably 8MPa, when spray water increases
When pressure after pressure is greater than 8MPa, the first overflow valve opens pressure release.
Second pressure gauge and the second overflow valve are installed in the oil circuit valve group, the range of second pressure gauge is 0-40MPa,
The set pressure of the operating pressure of real-time display pump motor, second overflow valve is preferably 18MPa, when system oil-way pressure reaches
When to 18MPa, overflow valve is opened, and hydraulic oil returns to oil sump, plays the role of voltage-limiting protection to pressure charging system.
The nozzle dispersion is arranged on the left rocker arm 1 and right rocker arm 7 of coalcutter, and the outlet pressure of the nozzle is preferably
8MPa.Pressurized spray water flows into left rocker arm 1 and right rocker arm 7 after water route valve group 15, sprays through nozzle 8.Nozzle quantity is left
Right each 4.
According to nozzle outlet pressure 8MPa, 14 rated speed 1750r/min of pump motor, rated motor flow 19.6l/min,
The rated discharge 8ml/r that gear pump 13 individually pumps, the water outlet diameter of the nozzle are preferably determined as 0.5mm.
The water pipe line preferentially selects two layers of braided steel wire rubber tube of latus rectum φ 13.The oil pipe pipeline preferably uses
Two layers of braided steel wire rubber tube of latus rectum φ 10.
The two position three-way valve can be fixed on the shell of right tractive unit 6 by fastening screw.The two-position three way
Valve may include valve rod 19, valve body 18 and spring 17.The valve rod cooperates in the valve body with the valve body slides, the bullet
Spring is mounted on the left end of the valve rod, and the right end of the valve rod is connected with piston, and piston is located at by valve body and the closed liquid of end cap
It controls in medium chamber, the valve interior wall of piston and the chamber is slidably matched.The end cap is equipped with water hole 20, which is configured to
The hydraulic control mouth.First oil inlet, the second oil inlet and third oil inlet right-to-left are successively provided on the valve body,
And its inner end is communicated with three valve body annular grooves on the valve body respectively, the valve rod be equipped with about valve rod annular
Slot (when valve rod is in right end, is in reset state, as shown in Figure 2) when the valve rod is in right working position, ring on the left of valve rod
Shape slot is connected to second oil inlet and third oil inlet respectively corresponding valve body annular groove, when the valve rod is in left station
(spring is compressed under the promotion of hydraulic control medium at this time), valve rod right circular slot is connected to the first oil inlet and the second oil inlet is each
From corresponding valve body annular groove.
Spring 17 is designed by cracking pressure 0.3Mpa, after spray water enters two position three-way valve 10 by water hole 20, when pressure is big
When 0.3Mpa, valve rod 19 is pushed to overcome spring force mobile, the two neighboring valve body annular groove kept right on valve body 18 is by valve rod 19
On valve rod right circular slot connection, connection oil circuit valve group 16 be connected to the hydraulic fluid port of pump motor 14, from duplex gear pump 13
Hydraulic oil enters pump motor 14.When spraying water pressure is less than 0.3Mpa, valve rod 19 resets under spring force, at this time valve body
It connects oil circuit valve group 16 on 18 to be connected to the hydraulic fluid port of oil sump 4, the hydraulic oil from gear pump 13 returns to oil sump 4.The utility model
The prevention and treatment that cannot be only used for coal dust can be used for the mine dust prevention and treatment when coal minings such as alumina.
Claims (10)
1. external spraying automatic pressure augment system built in a kind of coalcutter, it is characterised in that: be mounted on coalcutter fuselage including built-in
Oil sump, filter, duplex gear pump, oil circuit valve group, two position three-way valve and pump motor, the oil outlet of the oil sump is through oil pipe pipe
Road is sequentially connected the filter and duplex gear pump, two pumps of the duplex gear pump respectively have independent oil inlet and
The oil outlet of oil outlet, two pumps is separately connected the oil inlet of the oil circuit valve group through oil pipe pipeline and valve group is turned up in coalcutter
Oil inlet, the oil outlet of the oil circuit valve group connect the oil return opening and the two position three-way valve of the oil sump through oil pipe pipeline simultaneously
The second oil inlet, the first oil inlet and third oil inlet of the two position three-way valve are respectively through pumping horse described in oil pipe piping connection
The oil return opening of the motor oil inlet and the oil sump that reach, the motor oil outlet of the pump motor is through oil sump described in oil pipe piping connection
Oil return opening, the two position three-way valve is the pilot operated directional control valve of spring reset, and the spray water pressure water mouth of coalcutter is through water pipe
Pipeline connects the hydraulic control mouth of the two position three-way valve and the pump water inlet mouth of the pump motor simultaneously, and the pump motor pumps out the mouth of a river
It is located at the water inlet of the nozzle on rocker arm of coal mining machine through water pipe line connection, when the hydraulic control mouth of the two position three-way valve works,
First oil inlet and the second oil inlet communicate, and obstructed with third oil inlet, otherwise, the second oil inlet and third oil inlet phase
It is logical and obstructed with the first oil inlet.
2. external spraying automatic pressure augment system built in coalcutter as described in claim 1, it is characterised in that: the pump of the pump motor
It is connected with water route valve group on water pipe line between water outlet and the nozzle inlet, is mounted on coal mining built in the water route valve group
On machine fuselage.
3. external spraying automatic pressure augment system built in coalcutter as claimed in claim 2, it is characterised in that: in the water route valve group
First pressure gauge and the first overflow valve are installed.
4. external spraying automatic pressure augment system built in coalcutter as described in claim 1, it is characterised in that: the duplex gear pump
By the height-regulating motor driven of coalcutter.
5. external spraying automatic pressure augment system built in coalcutter as described in claim 1, it is characterised in that: in the oil circuit valve group
Second pressure gauge and the second overflow valve are installed.
6. external spraying automatic pressure augment system built in coalcutter as described in claim 1, it is characterised in that: the nozzle dispersion is set
It sets on the left rocker arm and right rocker arm of coalcutter, the outlet pressure of the nozzle is 8MPa.
7. external spraying automatic pressure augment system built in coalcutter as described in claim 1, it is characterised in that: the water outlet of the nozzle
Mouth diameter is 0.5mm.
8. external spraying automatic pressure augment system built in coalcutter as described in claim 1, it is characterised in that: the water pipe line is adopted
With two layers of braided steel wire rubber tube of latus rectum φ 13, the oil pipe pipeline uses two layers of braided steel wire rubber tube of latus rectum φ 10.
9. external spraying automatic pressure augment system built in coalcutter as described in claim 1, it is characterised in that: in addition to nozzle, other
Each component part is installed in the right tractive unit of coalcutter fuselage.
10. external spraying automatic pressure augment system built in the coalcutter as described in any one of claim 1-9 claim, special
Sign is: the two position three-way valve includes valve rod, valve body and spring, and the valve rod is matched in the valve body with the valve body slides
It closes, the spring is mounted on the left end of the valve rod, and the right end of the valve rod is connected with piston, and piston is located at by valve body and end cap
In closed hydraulic control medium chamber, the valve interior wall of piston and the chamber is slidably matched, and the end cap is equipped with water hole, the water hole
It is configured to the hydraulic control mouth, first oil inlet, the second oil inlet and third oil inlet right-to-left are successively provided with described
On valve body, and its inner end is communicated with three valve body annular grooves on the valve body respectively, the valve rod be equipped with about valve
Bar annular groove, when the valve rod is in right working position, annular groove is connected to second oil inlet on the left of valve rod and third oil inlet is each
From corresponding valve body annular groove, when the valve rod is in left station, valve rod right circular slot is connected to the first oil inlet and second
The respective corresponding valve body annular groove of oil inlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920007972.1U CN209369805U (en) | 2019-01-03 | 2019-01-03 | External spraying automatic pressure augment system built in coalcutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920007972.1U CN209369805U (en) | 2019-01-03 | 2019-01-03 | External spraying automatic pressure augment system built in coalcutter |
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| CN209369805U true CN209369805U (en) | 2019-09-10 |
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ID=67829221
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488296A (en) * | 2019-01-03 | 2019-03-19 | 天地科技股份有限公司上海分公司 | External spraying auto-increasing pressure and system built in coalcutter |
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2019
- 2019-01-03 CN CN201920007972.1U patent/CN209369805U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488296A (en) * | 2019-01-03 | 2019-03-19 | 天地科技股份有限公司上海分公司 | External spraying auto-increasing pressure and system built in coalcutter |
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