Wet ball mill, the feeding device for wet ball mill and its pan feeding method
Technical field
The present invention relates to wet ball mill fields, and in particular, to a kind of feeding device for wet ball mill and its
Pan feeding method.Moreover, it relates to a kind of wet ball mill.
Background technology
Wet ball mill is the key equipment that material is broken and then crushes, and usual wet ball mill is by pan feeding
The compositions such as portion, discharging portion, rotating part, driving section.
In thermal power plant, wet ball mill is commonly used to the pulping equipment in flue gas desulphurization system, and function is profit
The limestone particle that will be inputted in wet ball mill by batcher with steel ball rotation be milled slurries are made, by follow-up cyclone,
Slurries are supplied to fume desulfurating absorption tower as the reactant of removing sulfur dioxide in flue gas by the equipment such as pump.Therefore, wet type ball
The stable operation of grinding machine is most important to flue gas desulphurization system.If slurries made from wet ball mill cannot be satisfied flue gas desulfurization
The service requirement of system, boiler of power plant pollutant emission will be exceeded, and while causing atmosphere pollution, generating set will be forced to stop
Machine brings greater loss, consequence serious.The material for inputting wet ball mill is the limestone particle of grain size about 20mm, these stones
Limestone particles carry more dust, and are easily accumulated in the grating position of wet ball mill pan feeding portion (i.e. batcher feed opening),
Pan feeding portion flow area is caused to reduce, charging ability declines, and eventually leads to the blocking of pan feeding portion, and ball mill fracture is stopped transport.Traditional
Processing method is that special messenger is arranged to open overhaul of the equipments hole, Hand scarf accumulated plugging every several hours during equipment is run
Lime stone.In practical application, sometimes as feeding coal improves, it even if continually being cleared up, still will appear stopping state, make
It stops transport at wet ball mill.In addition, above-mentioned processing method also has, maintenance workload is big and there are certain personal safety risks
Determination.
In view of this, it is desirable to provide a kind of pan feeding dress for wet ball mill that pan feeding portion can be avoided to block
It sets.
Invention content
The technical problem to be solved by the present invention is to need to provide it is a kind of can avoid that pan feeding portion blocks for wet
The feeding device and its pan feeding method of formula ball mill.
In addition, another technical problem to be solved by this invention is to need offer one kind that pan feeding portion can be avoided to occur to block up
The wet ball mill of plug.
In order to solve the above technical problem, the present invention provides a kind of feeding device for wet ball mill, pan feeding dresses
The pan feeding portion including being connect with the wet ball mill is set, grid is provided in the pan feeding portion, the feeding device further includes:Pressure
Power water supply line, the pressure water source pipeline is for providing pressure water source;Weighing sensor, the weighing sensor is for weighing in list
Pass through the weight for waiting for grind materials of the weighing sensor in the time of position;Nozzle, the nozzle are connected to the pressure water source pipeline simultaneously
And it is provided towards the grid injection water;Electric control valve, the electric control valve are connected in the pressure water source pipeline;Stream
Gauge, the flowmeter are connected in the pressure water source pipeline;And control unit, the control unit and the weighing and sensing
Device, the electric control valve and flowmeter electrical connection, described control unit are waited for according to what the weighing sensor measured
The normal flow of required water is calculated in the weight of grind materials, the institute that then described control unit is obtained according to the flow measurement
State the water in pressure water source pipeline actual flow and the normal flow and control the aperture of the electric control valve.
Preferably, when actual flow is less than the normal flow, described control unit is sent out to the electric control valve
Expand opening amount signal;When actual flow is more than the normal flow, described control unit is sent out to the electric control valve to be subtracted
Small guide vane signal;When actual flow is equal to the normal flow, described control unit sends out holding to the electric control valve
Opening amount signal.
Preferably, the nozzle includes having the taper sheath of smaller diameter end and larger diameter end and being connected to the taper sheath
The smaller diameter end of the injection end plate of larger diameter end, the taper sheath is connected to the pressure water source pipeline, the injection end plate shape
At there is multiple injection through-holes.
Preferably, the injection end plate is spherical plate.
Preferably, described to wait for that grind materials are continuously fed by batcher in the pan feeding portion, the weighing sensor is set
It is placed in the batcher.
Preferably, it is also associated with water filter in the pressure water source pipeline.
Preferably, it is also associated with first manual switch valve and the second manual switch valve in the pressure water source pipeline, it is described
First manual switch valve and second manual switch valve are closely arranged respectively in the both sides of the electric control valve.
Preferably, the feeding device further include by bypass duct with the electric control valve, the first manual
The third manual switch valve of switch valve and the second manual switch valve parallel connection.
The present invention also provides a kind of wet ball mill, which includes of the present invention for wet ball mill
Feeding device.
In addition, the present invention also provides a kind of pan feeding method for wet ball mill, the pan feeding method includes:A, it provides
Wait for grind materials;B, water is provided by pressure water source pipeline, wherein being provided with electric control valve in the pressure water source pipeline;It is described
Step b includes:Pass through the weight for waiting for grind materials of the weighing sensor within the unit interval using weighing sensor weighing;According to
What the weighing sensor measured waits for that the normal flow of required water is calculated in the weight of grind materials;It is measured and is pressed using flowmeter
The actual flow of water in power water supply line;The electric control valve is controlled according to the actual flow and the normal flow
Aperture.
Preferably, when actual flow is less than the normal flow, expand the aperture of the electric control valve;When practical stream
When amount is more than the normal flow, reduce the aperture of the electric control valve;When actual flow is equal to the normal flow, protect
Hold the aperture of the electric control valve.
Through the above technical solutions, the feeding device and its pan feeding method for wet ball mill of the present invention being capable of basis
While waiting for that the weight of grind materials is ejected water in pan feeding portion, rushed using the water with pressure by the material at grid is deposited in
It dissipates and then enters in wet ball mill along water, thus meet the moisturizing demand of wet ball mill and material is avoided to be sent out in pan feeding portion
It is raw to block.Feeding device for wet ball mill of the wet ball mill of the present invention due to including the present invention, it is same
Have the advantages that above.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, an and part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the feeding device for wet ball mill of specific implementation mode according to the present invention;
Fig. 2 is the enlarged view of the nozzle of the feeding device in Fig. 1;
Fig. 3 is the sectional view of the A-A in Fig. 2;
Fig. 4 is the enlarged view in the pan feeding portion of the feeding device in Fig. 1.
Reference sign
1, pan feeding portion 2, grid
3, weighing sensor 4, nozzle
4a, taper sheath 4b, injection end plate
5, pressure water source pipeline 6, electric control valve
7, flowmeter 8, control unit
9, batcher 10, water filter
11, pressure gauge 12, first manual switch valve
13, the second manual switch valve 14, bypass duct
15, third manual switch valve 16, wet ball mill
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of feeding device for wet ball mill 16, specifically, as shown in Figure 1 and Figure 4, the pan feeding
Device includes the pan feeding portion 1 being connect with the wet ball mill 16, grid 2 is provided in the pan feeding portion 1, the feeding device is also
Including:Pressure water source pipeline 5, the pressure water source pipeline 5 is for providing pressure water source;Weighing sensor 3, the weighing sensor 3
For weighing the weight for waiting for grind materials within the unit interval by the weighing sensor 3;Nozzle 4, the nozzle 4 are connected to described
Pressure water source pipeline 5 and it is provided towards 2 injection water of the grid;Electric control valve 6, the electric control valve 6 are connected to institute
It states in pressure water source pipeline 5;Flowmeter 7, the flowmeter 7 are connected in the pressure water source pipeline 5;And control unit 8, it should
Control unit 8 is electrically connected with the weighing sensor 3, the electric control valve 6 and the flowmeter 7, described control unit 8
Wait for that the normal flow of required water is calculated in the weight of grind materials according to what the weighing sensor 3 measured, the then control
The actual flow and the normal flow of water in the pressure water source pipeline 5 that unit 8 processed is measured according to the flowmeter 7 and
Control the aperture of the electric control valve 6.
It should be noted that pan feeding portion 1, the specific constructive form of grid 2 and nozzle 4 and material, weighing sensor 3,
The concrete type of electric control valve 6, flowmeter 7 and control unit 8 can be arranged as required to, these belong to the present invention's
Within range of the technology design.Such as in order to facilitate pan feeding, pan feeding portion 1 can be infundibulate.It is used in addition, material is specifically as follows
The limestone particle of the desulfurization slurry in flue gas desulphurization system is produced, control unit 8 can be DCS control module, and flowmeter 7 can
Think electromagnetic flowmeter.
Through the above technical solutions, the feeding device for wet ball mill of the present invention can be according to the weight for waiting for grind materials
Amount is while eject water in pan feeding portion 1, using the water with pressure by the material for being deposited at grid 2 break up then along
Water enters in wet ball mill 16, thus meets the moisturizing demand of wet ball mill 16 and material is avoided to occur to block up in pan feeding portion 1
Plug.
In the feeding device of the present invention, specifically, when actual flow is less than the normal flow, described control unit
8 send out expansion opening amount signal to the electric control valve 6;When actual flow is more than the normal flow, described control unit 8
Reduction opening amount signal is sent out to the electric control valve 6;When actual flow is equal to the normal flow, described control unit 8
Holding opening amount signal is sent out to the electric control valve 6, to realize control unit 8 according to the actual flow and the standard
Flow and the aperture for controlling the electric control valve 6.
In the feeding device of the present invention, it is preferable that as shown in Figures 2 and 3, the nozzle 4 includes having smaller diameter end
With the taper sheath 4a of the larger diameter end and injection end plate 4b for the larger diameter end for being connected to taper sheath 4a, the taper sheath 4a's
Smaller diameter end is connected to the pressure water source pipeline 5, and the injection end plate 4b is formed with multiple injection through-holes, so as to utilize
The nozzle 4 sprays the water with pressure in a manner of more disperseing.Specifically, the injection end plate 4b is spherical plate, to
The water with pressure can be sprayed by the nozzle 4 in the way of fan spray, and then completely grid 2 is washed away.
In addition, the area and pressure water source pipe of size, the installation site of nozzle 4 and the setting angle of injection end plate 4b according to pan feeding portion 1
The flow of water and pressure determine in road 5, as long as the water that nozzle 4 ejects can completely cover pan feeding portion 1.
It is specifically, described to wait for that grind materials continuously feed the pan feeding by batcher 9 in the feeding device of the present invention
In portion 1, the weighing sensor 3 is set in the batcher 9, so as to pass through weighing sensor 3 and the weighing of batcher 9
Pass through the weight for waiting for grind materials of the batcher 9 within the unit interval.
In the feeding device of the present invention, more specifically, being also associated with 10 He of water filter in the pressure water source pipeline 5
Pressure gauge 11, to be filtered to the water in pressure water source pipeline 5 using the filter 10 (such as Y types strainer), on the contrary spray
Mouth 4 and electric control valve 6 are damaged by the foreign matters from being blocked in water, while using pressure gauge to the pressure of the water in pressure water source pipeline 5
Power is detected, and breaks up the needs of material to find whether the pressure of water meets.
In the feeding device of the present invention, it is preferable that be also associated with first manual switch valve in the pressure water source pipeline 5
12 and second manual switch valve 13, the first manual switch valve 12 and second manual switch valve 13 are closely arranged respectively
In the both sides of the electric control valve 6, to which when electric control valve 6 damages, maintenance personnel can be easily by first manual
Switch valve 12 and the second manual switch valve 13 are closed and are repaired to electric control valve 6.It is highly preferred that the feeding device is also
Including by bypass duct 14 by with the electric control valve 6, the first manual switch valve 12 and second manual switch
The third manual switch valve 15 in parallel of valve 13, to when electric control valve 6 damages, maintenance personnel can easily will be first-hand
12 and second manual switch valve 13 of dynamic switch valve closes and by third manual switch valve 15, so as to full by bypass duct 14
The moisturizing demand of sufficient wet ball mill 16.
The present invention also provides a kind of wet ball mill, which includes of the present invention for wet ball mill
Feeding device.
Feeding device for wet ball mill of the wet ball mill of the present invention due to including the present invention, it is same
Have the advantages that above.
In addition, the present invention further provides a kind of pan feeding method for wet ball mill, the pan feeding method includes:a、
Offer waits for grind materials;B, water is provided by pressure water source pipeline 5, wherein being provided with motorized adjustment in the pressure water source pipeline 5
Valve 6;The step b includes:It is weighed using weighing sensor 3 and grind materials is waited for by the weighing sensor 3 within the unit interval
Weight;Wait for that the normal flow of required water is calculated in the weight of grind materials according to what the weighing sensor 3 measured;It uses
Flowmeter 7 measures the actual flow of the water in pressure water source pipeline 5;According to the actual flow and normal flow control electricity
The aperture of dynamic regulating valve 6.
Through the above technical solutions, the pan feeding method of the feeding device for wet ball mill of the present invention can be according to waiting for
While the weight of grind materials is ejected water in pan feeding portion 1, rushed using the water with pressure by the material at grid 2 is deposited in
It dissipates and then enters in wet ball mill 16 along water, thus meet the moisturizing demand of wet ball mill 16 and avoid material in pan feeding
Portion 1 blocks.
In the pan feeding method of the feeding device of the present invention, specifically, when actual flow is less than the normal flow, expand
The aperture of the big electric control valve 6;When actual flow is more than the normal flow, reduce opening for the electric control valve 6
Degree;When actual flow is equal to the normal flow, the aperture of the electric control valve 6 is kept, to realize control unit 8
The aperture of the electric control valve 6 is controlled according to the actual flow and the normal flow.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical scheme of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.