CN85102391A - Reclaim the device of tank bottom slurry - Google Patents

Abstract

A device that is used to control the slurry density that reclaims basin comprises being used for adding to basin the device of slurry, overflow device that communicates with storage tank and the regenerative apparatus that is mounted to towards tank bottom.This regenerative apparatus consists essentially of a downward exit skirt conduit, and this conduit on even keel is derived from basin.This conduit is connected on the pump to remove the slurry that is deposited on tank bottom.Conduit also comprises density and/or the flow that is used to measure by the material of conduit.

Description

Reclaim the device of tank bottom slurry

Known to the applicator, prior art can be divided into 3 fields; The firstth, the relevant control technology of transporting the slurry density in the pipe and correcting density error subsequently of measuring; The secondth, be used for the vertical tank device in ore deposit, auxiliary process is from the slurry in the ore deposit; The 3rd is to handle other useful storage tanks of slurry in the ore deposit beyond the vertical tank.

In first field, No. 3,400,984, (U.S.) patent of granting K.R. Xie Lian etc. and the patent of granting L.P. Rice 3,514, No. 217 are arranged.These two patents all are the method and apparatus that relevant controlling is transported the slurry density in the pipe.The company's of thanking patent is then come control of density with the method for adding fluid or removing fluid.

Second group of patent is to issue the NO.3 of R. Dare etc., 966,261 Hes; D.L. the NO.3 of Mai Jian etc., 942,841; W.T.The NO.3 of Si Weini, 993,359 and H.O.Restrain the NO.3 of this top grade, 617,094.Each above patent disclosure be used to the vertical tank preserving slurry and slurry is in store removed.The Si Weini patent disclosure a kind of jet dredge pump, this pump can be removed slurry in vertical tank, it comprises that also the fluidisation nozzle stops up storage tank to prevent slurry when stopping or solidifying.Grant the patent with Mai Jian etc. such as Dare, the both discloses the vertical tank that is used for preserving the ore deposit slurry.Yet, in these patents, all be to utilize pump or gravity feeding slurry to be removed from bottom land with pump then.Grant Ke Site patent disclosure a light slurry tank, there, with a pump of drawing material outside the slurry sucking-off groove of bottom.

The patent No. 4,060,281; 3,981,541; 4,143,921; 3,870,373 and 3,545,618 all disclose various be used in the ore deposit or outside the ore deposit storage tank and with the large-scale recovery storage tank that is equipped with fixed type or portable pump, can be used for the slurry of storage tank bottom is removed.

The present invention is one and is used for for example exploiting with other operating process interim storage slurry and then the slurry of constant density being reclaimed so that the modifying device by as the connection device that transports pipeline slurry being transported expeditiously.In the former patent, generally be that pump is moved horizontal or vertically, make slurry in the comparatively certain density of following of maintenance in the pipeline of transporting, like this, if density descends, just pump is moved apace to draw more thing degree.

In the ore deposit, built one similar in appearance in the patent No. 4,143,921 disclosed devices,, special problem just can take place when storage tank in such device when underground.A tangible problem is will excavate ground grading and support the mine top so that big horizontal storage tank is built the underground practical difficulty that exists under the ore deposit.Second problem is the economic and reliable that is used to draw the device of slurry, such device need be equipped with the track of mobile pump on storage tank, accrete outer cover and for filling other essential devices of storage tank equably for example is sent to slurry the control hopper of another place from a place when the slurry bottom pump is reclaiming storage tank.

Device disclosed herein has been simplified in the ore deposit or the recovery problem in ground or underground digging operation significantly.At first in groove, add slurry and do not need complicated apparatus.Secondly, need not to use mobile device, for example just recyclable slurry such as pump.Moreover groove can so just make the complexity of building storage tank in the ore deposit simplify greatly at the bottom of vertical shaft is built in the ore deposit.The 3rd, owing to be provided with moving-member, reduced difficulty mechanically significantly.

Basically, the present invention includes a vertical tank, the device of a controlled adding slurry is arranged at its top.Near at the bottom of exit skirt is positioned at jar, its mouthful is at the bottom of the jar.One transports pipe is connected with exit skirt and draws outside the jar.Exit skirt down, when basin following period of time need not and can not stop up when slurry is solidified yet.In order to be easy to break up slurry, various fluidisation nozzles be installed in lural around.First group, the fluidisation nozzle is downwards facing to the bottom.At the bottom of second group of fluidisation nozzle is installed in jar so that slurry is shifted to exit skirt.The 3rd group be a fluidisation nozzle can be mounted to towards bell-mouthed inside with remove being compacted of may taking place in this zone particle.

The density of transporting in the pipe is to measure by a densimeter that transports on the pipe that is contained in the basin outlet, and flow counter also can be contained in and transport on the pipe, and flow counter and densitometric mouth are as the input end of programming controller.The slurry that transports can carefully be controlled its density by the way that the connecting tube of dilution holes between exit skirt and pump adds fluid, and pump then is used for from the storage groove slurry being removed.Fluid is to add by the dilution water pump, and the input end of this dilution water pump links to each other with storage tank, and its delivery port then is connected to dilution holes.

In preferred embodiment, dilution holes is installed in 90 ° pipe bent position, this bend pipe is connected the horizontal component of exit skirt with the conduit that leaves slurry tank, the amount that is added fluid by pump can be controlled by rotating speed that changes the dilution water pump or the valve that is controlled between dilution water pump and the dilution holes, fluid joins in the conduit that joins at the dilution holes place, and these two kinds of control methods are controlled through mouth by process controller.Have overflow pipe at the top of jar to dredge the fluid that overflows.And storage tank is led in overflow.

Fig. 1 represents preferred embodiment of the present invention, shows the full sectional view of the basin that has plumbing connection;

Fig. 2 is the scheme drawing of a kind of controlling schemes of device shown in Figure 1;

Fig. 3 is the scheme drawing of the alternative plan of device shown in Figure 1.

Of the present invention being described in detail

With reference to Fig. 1, a slurry pot is by shown in the arrow 10, and it comprises sidewall 11 and bottom 12.Sidewall and bottom available metal, cement or other material easily cause.In fact used material is decided by what SPECIAL MATERIAL local and that be easy to obtain in the place of building it is built in, and overflow control device is an augmenting portion 13 that is looped around the jar at jar 10 tops 14, and it has a top 15 that is higher than jar 10 tops 14.Jar 13 has a bottom 16 that connects jar 13 to dredge fluid.Overflow pipe 17 arrives storage tank 20 by valve 18 and conduit 19.Slurry for example arrives the introducing device of representing with arrow 22 usually by conduit 21 from the face input in an ore deposit.And introducing device someways, for example is fixed in sidewall 11, enlarged 13 or mine top (not shown) with the pull bar (not shown).The basic role of introducing device 22 is high velocity turbulent flows of eliminating the groove slurry, and it generally is made of a cylindrical portions may 23 and a tapered segment 24 that has outlet 25.The fluid that enters introducing device from conduit 21 makes it turn round and round around introducing device 22 usually by export department's 26 orientations of conduit 21.Can prevent that like this material is splashed to the intake outside and has eliminated other problems.Thereby advance to reduce turbulent flow in groove 10 in order to reduce eddy current, many fins 27 are installed in tapered segment 24 to slow down or to stop the vortex of slurry 28 in introducing device 22.Also can supply to introducing device 22 to material from a source of slurry 29 by second conduit 30.Slurry 29 can be dealt with several ore deposits face; And when two introducing conduits 21 and 30 are all opened, clearly, just can deal with more face.

In case after slurry 28 was hindered slowly by fin 27, it deposited by the direction of arrow 33.

Introducing part disclosed herein is another project of applying for simultaneously, and definitelys abandon the requirement as a part of the present invention.

The transfer of slurry is to comprise that by one the device of exit skirt 35 realizes, this exit skirt then the bend pipe 36 by 90 ° with have an opening 38 to join by the horizontal duct 37 of switch valve 39 again at sidewall 11 up to slurry pump 40.The mouth of pump 40 links to each other with conduit 41, if storage tank 10 present positions are lower than the final destination of slurry, conduit 41 just should insert a bont 42 so.If slurry is coal and water, bont 42 just is sent to final destination resemble the pre-treatment plant to slurry by delivery pipe 43.Clearly, if groove 10 is in ground, bont will be a N/R.Under these circumstances, pump 40 can directly link to each other with conduit 41, and this conduit is then received the end points portion of slurry operative installations rather than received a bont.

In order to measure the density that is sent to the slurry of pump 40 by conduit 37, density measuring equipment 45 on connecting on the conduit 37, and its mouth is connected with the input end 47 of programming controller 48 by lead 46,49 input ends 51 by lead 50 and programming controller 48 of flow counter join.

Pump 52 will pick up fluid from storage tank 20, and fluid arrives the intake 54 of pump 52 by conduit 53.55 turning cylinder (not shown) that come driving pump 52 by mechanical connection of speed-changing driving device with connecting rod 56.The delivery port 57 of pump 52 connects control cock 60, detects valve 59 and shutoff valve 60 by conduit 58, receives at last on the conduit 62.Fluid then flows to an opening 64 that is positioned on bend pipe 36 places by opening 63.

The output signal that speed-changing driving device 55 produces by the mouth 65 at programming controller 48 is and controlled, and this mouth 65 then joins by the input end 67 of lead 66 with variable speed drive device 55.Control cock 60 also can be similarly controlled by the mouth 68 of programming controller, and this mouth then links to each other with the control part 70 of valve 60 by a lead 69.

For the slurry density that remains in the conduit 37 is constant, preferably make near the state of the slurry maintenance fluidisation exit skirt 35 of groove 10.When carrying out clearly groove, preferably make the whole bottom of groove 10 keep fluidized state, when a smooth bottom 12 is arranged as shown like that, especially like this.In order to realize fluidisation, some fluidisation nozzles have been loaded onto.First group comprises a manifold 71 that many nozzles 72 are arranged, and installs and directed downwards around branch manifold shown in these nozzle 72 picture lines 73.Manifold 71 is by conduit 74, and shutoff valve 75 links to each other with pump 77 with detection valve 76.Pump 77 sucks fluid from storage tank 20 by conduit 78.In order to control density better, can be installed in additional flow counter 79 on the conduit 58 by conduit 37.Thereby this flow counter can be connected on the programming controller 48 and change flow velocity with control variable speed drive device 55.At this moment, can be used for producing an inner predetermined value with the control loop bonded assembly densimeter 45 in the programming controller 48 into the control loop in the programming controller 48, programming controller 48 is from the feedback of flow counter 79 received signals as it, and sends an output signal 65.This is a series connection control loop of using in industry usually.Another additional nozzle 80 is mounted to and makes it spray into exit skirt 35 to its jet to break any cured granulate of slurry, helps slurry to flow to exit skirt.Nozzle 80 is by conduit 81, and shutoff valve 82 links to each other with pump 84 with detection valve 83.Pump 84 passes through conduit 85 from storage tank 20 draw fluid.Help the 3rd group of fluidisation nozzle of cleaning groove 10 then to be installed in the outside of groove 10 circlewise by ring duct or manifold 86, and manifold 86 have a plurality of break-through grooves 10 sidewall and shown in line 88 towards the nozzle 87 of bottom.Similarly, ring duct 86 is by conduit 89, and shutoff valve 90 links to each other with pump 92 with detection valve 91.92 of pumps pass through conduit 93 from storage tank 20 draw fluid.Water source 95 links to each other with storage tank 20 by conduit 96.97 of the 3rd mouths of controller 48 pass through lead 98 and link to each other with speed change driver 99.99 turning cylinders by connecting rod 100 and pump 40 of actuator carry out mechanical connection.

Clearly, its total body density in the control slit 10 more accurately of additional flow meter can also be installed in system.For example the flow counter (not shown) can install on each fluidisation nozzle pipe 81,74 and 89.From any one or all information that flow counter obtained, can be input in the programming controller 48, so that more critically control the density that flows to the diluted fluid the inlet 64 from conduit 57, the information that the output of each flow counter also can be used as a flow indication or carries out proper operation as operator's work.

The operation of regenerative apparatus is just like following:

Jar 10 is designed to hold the size of required slurry, so that carry out essential operation, in other words, the size of groove must be designed under the situation of slurry input variation, can keep one outwards stable and uniform slurry of density.Slurry source 29 can be a underground ore faces or a day mineral, and its itself can be phosphate, coal, iron ore or other any materials.The narration here is only limited to the use of coal; The purposes of this device is not limited to coal.

When material came out at 29 places, slurry source, it will be sent to introducing device 22 by conduit 21 or 30.Usually, intake 26 will be arranged to like this, around the inside of introducing device 22 vortex take place to cause material.Can its be reduced by fin 27 in the turbulent flow at intake place, fin can hinder that slow its vortex drops to the bottom of tapered segment 24 by material and arrive jars 10 inside via outlet 25.When jar 10 inner accumulations during the slurry of capacity, pump 40, pump 52 start simultaneously with pump 77, and pump 77 absorbs water to the manifold 71 that is surrounded on exit skirt 35 outsides from storage tank 20.Fluid flows to the nozzle 72 that near beginning exit skirt 35 stirs slurry then.Additional fluidisation nozzle 87 and 80 can be connected by operating pumps 92 and 84 respectively, and these two pumps pass through conduit 93 and 85 respectively from storage tank 20 withdrawn fluid, and respectively fluid are passed to nozzle by conduit 89 and 81.No matter have or not the slurry of fluidisation around the exit skirt 35, pump 40 can extract slurry by conduit 37 and enter near bend pipe 36 exit skirt 35, and slurry enters in the pump 40 then by densimeter 45 and flow counter 49.Densimeter 45 is measured the density of the fluid that is extracted by conduit 37, and measured density is sent to the input end 47 of programming controller 48 by lead 46.Density value of chosen in advance, and it is stored in the programming controller 48.If slurry and predetermined density value relatively are overrich, then controller 48 can send a change signal by mouth 65.This signal then is sent to the input end of speed change driver 55 by lead 66, and this variable speed drive (VSD) merit device is connected with pump 52 by connecting rod 56, will cause that like this pump 52 quickens to rotate, and makes it to surpass desired speed.Then, additive fluid will be drawn onto conduit 53 and output to dilution mouth 64 by conduit 58 from storage tank 20, add more water to the material of being drawn by exit skirt 35.When the measured density of densimeter when being suitable, pass to the signal of the input end 47 of programming controller 48, will can not cause the change of signal of the mouth 65 of controller 48.The rotating speed of pump 52 just can keep certain like this.

When density was brought down below the predetermined density value of controller 48, the signal that reaches speed change driver 55 input ends 67 by lead 66 will make the fluid that is injected conduit 37 by dilution mouth 64 reduce.Certainly, clearly, except the rotating speed of control pump 54, programming controller 48 can also by lead 69 transmit a signal to the control part 70 of valve 60 to cause same effect.Owing between to the signal change (or speed change of actuating device 55) of valve 60 and the variable density that goes out by 45 sides of densimeter, a lag time is arranged, an improvement response for change that takes place from programming controller 48 can obtain by flow counter 79, and this flow counter will be sent an instant signal that changes flow velocity to valve 60.So an indicator signal of flow counter 79 can be used as an incoming signal of programming controller 48 or other controller (not shown) and is used for control program, thereby has reduced the density variation in conduit 37.In order to keep the speed of fluid in delivery pipe; flow in delivery pipe and density all are essential, in other words, and must be under this speed; slurry is being sent to by conduit 41 and lifter 42, conduit 43 when making land used at last, and particulate wherein can suspend and be unlikely and precipitate.Cross low flow,, also can cause the precipitation of particulate even density is suitable.The input end 51 of programming controller 48 is decided and be sent to by lead 50 to a flow utilizable flow instrumentation like this.

The flow counter 49 of measuring flow can be a magnetic flowmeter.When the flow that is measured and predetermined amount of flow value were made comparisons, the output signal of flow counter 49 was then reached programming controller 48 by lead 50.Error signal (if any) then is used to cause a change of mouth 97, and there, it is sent to speed-changing driving device 99 by lead 98.99 of actuating devices are connected with the turning cylinder of pump 40 by mechanical device 100, like this, are measured to crossing when low by device 49 when flow, and the impeller of water pump then increases its rotating speed by speed-changing driving device 99.

Clearly, by conduit 21 and 30 and the fluid that enters of fluidisation nozzle 72,87 and 80 all flow into jar 10 inside.Therefore, certain wasteway must have.In the present embodiment, wasteway is provided by outside amplifier section 13, and this amplifier section has a top 15 that is higher than groove top 14.Thereby overflow can be flow through top 14 and flow to reservoir between amplifier section 13 and sidewall 11.This liquid stream enters storage tank 20 by the infundibulate conduit 17 and the conduit 19 of overflow pipe then.This just when needing the various fluidisation nozzle of operation, has added fluid in storage tank.Like this, water just covers jar 10 tops, 14 formed weirs and flows back to storage tank by conduit and finishes recirculation.If needed, additional water can add to the storage tank 20 by conduit 96 from water source 95.Storage tank 20 must have certain device and flow down and be accumulated in particulate matter in the pond to remove through jar 10 tops 14.As what the practical structures prototype was measured, be directly proportional with top 14 flow rate of fluid of flowing through through the amount of the particulate matter at top 14.

Be accumulated in the excessive amounts of particulate matter in the storage tank 20, can be removed by any existing process.The amount that need remove generally only accounts for a little percentum by the handled total amount of regenerative apparatus disclosed herein.

In a specific embodiment of the present invention, the diameter of upright tank is 18 feet, and height is 38 feet.Jar the bottom one 3/8 English inch fluidisation spout 80 in the exit skirt inboard is housed, the fluidisation spout 72 of four 1/2 English inch outside exit skirt, the bottom fluidization nozzle 87 of eight 3/4 English inch, the periphery at the bottom of they equally spaced are contained in jar also has the dilution holes or the inlet 64 of one 10 English inch.Introducing device 22 nearly 7 English Foot height, diameter is 8 English Foot.The purpose of introducing device is that thereby caused turbulent flow reduces the grain amount that jar 10 tops 14 of flowing through enter storage tank 20 when advancing jar owing to slurry in order to reduce.

When jar 10 is done the operation test with the slurry of low content solid or coal, can measure, when nozzle 87 is switched on, obtained the result of the density rising of recovery slurry.This exit skirt 35 that clearly illustrates fluidisation nozzle forward recovery pump 40 moves the coal grain, makes its unlikely precipitation.At a large amount of duration of test, once having obtained density in colliery, Canadian Red River is 1.20 and 1.25 gram per centimeters ³The result.If have enough coal grains be present in jar in to keep appropriate density, above-mentioned density is not the function of the height of coal slurry jar 10 in, therefore, does not need to determine enter the mouth 64 operating characteristics of pump 52 and its diluted fluid again.

With reference to Fig. 2,3 programming controllers have been used: programming controller 101, programming controller 102 and programming controller 103.Except these programming controllers, also used multiplier 104.Predetermined value 105 is input to programming controller 101 to signal by lead 106.The mouth of measuring the densimeter 45 of slurry density joins by the input end 107 of lead 46 with programming controller 101.The mouth of measuring the flow counter 49 of slurry flow rate links to each other with the input end 110 of multiplier 104 by lead 50.The mouth of programming controller 101 then joins by the input end 109 of lead 108 with multiplier 104.The mouth 110a of multiplier 104 then is connected with the input end 112 of programming controller 102 by lead 111.A mouth of measuring the flow counter 113 of diluent stream flow rate then joins by the input end 115 of lead 114 with programming controller 102.A mouth of programming controller 102 then is connected with the input end 70 of control cock 60 by lead 116.Flow counter 49 also links to each other with an input end 117 of programming controller 103 with lead 50a by lead 50.Speed-changing driving device 99 is obtained its signal via lead 118 from programming controller 103 by the input end 119 that connects speed change driver 99.Programming controller has a predetermined value 120, and it links to each other with programming controller 103 by lead or other circuit components 121.

This circuit has shown and has been used to control suitable density and three programming controllers of flow and the effect of multiplication parts that arrives pump 40 by conduit 37.As in above-mentioned device, density and flow are measured with densimeter 45 and flow counter 49 respectively.It is very important that the total body density of total system is placed under controlled, and making total system have some has had experience, for example can adjust this variation when flowrate variation as soon as possible, is important too.Like this, when flow measurement descended to flow, its meeting guiding line 50 and 50a sent signal to represent the variation of this flow.Programming controller 103 will detect, by the needs of the flowrate variation that predetermined value determined.For example, if flow measurement to flow drop to and be lower than predetermined value, as by indicated with the deviation of predetermined value, so, one of lead 118 changes the input end 119 that signal will pass to speed-changing driving device 99.This change will cause speed-changing driving device 99 in operational corresponding change, and this change is sent to pump 40 by connecting rod 100.If flow reduces, then pump 40 will increase it rotating speed to increase flow.Yet when flow having taken place reduce, in a short time, the fluid that is being sucked into exit skirt 35 will cause the decline of the density of being measured by densimeter 45; Therefore, the minimizing of flow also can be sent to the input end of multiplication parts 104 by lead 50.

Be imported into the input end 107 of programming controller 101 by lead 46 by densimeter 45 measured density.Any ratio will pass to the input end 109 of multiplier 104 by being output at lead 106 by the either large or small deviation of predetermined value 105 predetermined density through lead 108.Flow counter 49 resembles the input end 110 that also by lead 50 its output signal is sent to multiplier 104 above-mentioned.Then, multiplier 104 is multiplying each other from received density signal of input end 109 and the flow signal by input end 110 inputs, the gained product is identified by the constant that system determined with one, and this signal is sent to the input end 112 of programming controller 102 by lead 111.Then, this product signal will be sent on the control part 70 of valve 60.Basically, multiplier 104 gives the instant messages of valve 60 with relevant flow with programming controller 102, and this information must be sent to inlet 64 so that suitably compensate the flow that measured by flow counter and the change of density.For example, if flow doubles, so, the fluid that is injected inlet 64 also must double, like this, be transmitted the signal that the 104 relevant flows of multiplier into change, will cause doubling immediately of the signal that is being sent to programming control 102, so this signal will be sent to the control part 70 of valve 60 by lead 116.

It at first is size and the desired various control steps of conduit that are decided by conduit that the flow of any necessity changes.Like this, when pump 40 picks up material by exit skirt 35, must keep enough flow velocitys to avoid the precipitation of particulate.Flow velocity can change according to picking up amount of substance and character; In other words, be coal if be sucked into bell-mouthed material, density will have a numerical value so.If the compound of coal and flag or rock, then it has another numerical value.Both made the compound that is sucked into conduit 37 measured appropriate density, but the compound with this density still can cause the change by the measured flow of flow counter by density measuring device 45.The change of this flow, such as described above, correction error apace makes the change at the mouth of speed-changing driving device 99 be compensated by the input of valve 60 like this.The output of flow counter 113 will be sent to the input end 115 of lead 114 or programming controller 102.Flow counter 113 is mainly used to measure whether reached desired or necessary flow.Then, the signal of input end 115 will with compare at 112 signal to determine the suitable adjustment of valve 60.Clearly, if the user talks about easily, any one or all programming controllers can be connected with one or more computers with the multiplication parts.

The user also can control mass velocity and replace controlling slurry density.Fig. 3 is the scheme drawing of improved control mass velocity.Be input to the input end 128 of multichannel programming controller 48 by lead 50 and 50a from a signal of flow counter 49 generations.Predetermined value device 133 is set on the predetermined value, and its mouth is connected with programming controller 48 by lead or circuit 134.Be lower than the predetermined value that is determined by predetermined value 133 if be input to the signal from flow counter 49 of programming controller 48 by lead 50 and 50a, then programming controller 48 will send signal to speed-changing driving device 99 by lead 98, instruct it to pass through the rotating speed of mechanical linkage 100 with the impeller of increase pump 40.On the contrary, be higher than the predetermined value that is determined by predetermined value 133 if be sent to the signal from flow counter 49 of programming controller 48 by lead 50 and 50a, then programming controller 48 will send signal and by lead 98 this signal is sent to speed-changing driving device 99, by the rotating speed of mechanical linkage 100 with reduction pump 40 impellers.

Referring now to Fig. 3, the 2nd control loop is input to input end 125 to the signals from densimeter 45 by lead 46 and is input into the input ends 127 of mass velocity calculator 126 by lead 50 handles from the signal of flow counter 49.The mouth of mass velocity calculator 126 is sent to its signal by circuit 129 input end 130 of multichannel programming controller 48.This signal then with by the selected value of predetermined value device 131 is compared, and this predetermined value device then links to each other with programming controller 48 by a lead or by circuit 132.If the signal from mass velocity calculator 126 is lower than the value of being scheduled to by predetermined value 131, then programming controller 48 can go out a signal, and this signal is sent to by-pass valve control 60 to reduce the dilution water by conduit 62 by lead 69, so just can increase mass velocity.On the contrary, if the signal from mass velocity calculator 126 is higher than the value of being scheduled to by predetermined value 131, programming controller will be exported a signal and by lead 69 this signal will be sent to by-pass valve control 60 and allow more dilute water by conduit 62, like this, just reduce mass velocity.

In this two-way control loop, also can influence the value of mass flowmeter pipe device 126 from the change of the signal of flow counter 49.Reduce signal from one of flow counter 49 and will cause corresponding minimizing from the signal of mass flow calculation device 126.This signal that can reduce the mass velocity calculator again is to being lower than the value of being scheduled to by predetermined value 131.Then, programming controller 48 will be exported a signal and by lead 69 this signal will be sent to valve 60, allow less dilution water by conduit 62, like this, will increase mass velocity.On the contrary, increase signal from one of flow counter 49 and will cause corresponding increase from the signal of mass velocity calculator 126.The signal of this flow velocity calculator that can improve the quality again is until being higher than the value of being scheduled to by predetermined value 131.Then, programming controller 48 will be exported a signal, and by lead 69 this signal will be sent to by-pass valve control 60, allow more dilution water by conduit 62, will reduce mass velocity like this.

At last, device disclosed herein provides a upright tank that is easy to build, and such upright tank has the ability of handling a large amount of slurry, storage slurry and shifting slurry with steady density and controlled flow.This device is to build easily basically, particularly at hostile environment, for example in mine.It has only and less except pump and speed-changing driving device, does not have other movable parts owing to wearing and tearing need the mechanical part replaced, and this has bigger economy for this device of construction, and is easier to keep in repair and have bigger reliability in the use.

Clearly, on using, also can do some and change, but still belong in the design and scope of disclosed invention of this specification sheets and claims.

Claims (13)

1, one is used to store slurry and is used to control the device of storing the density of slurry when reclaiming comprise:

(a) limiting part that has a sidewall and a bottom at least;

(b) be used for the parts that a slurry that contains solid and fluid joins said limiting part;

(c) be used to remove the overflow means that is connected in described limiting part of too much fluid;

(d) recovery part comprises downward substantially suction inlet parts and is installed in said bottom;

(e) the slurry pump parts have an intake and an outlet;

(f) parts of vessels is connected to said slurry pump intake on the said suction inlet parts, shifts thereby near the suction inlet parts material can be sucked in the suction inlet parts and by the slurry pump parts;

(g) be installed in dilution parts between said suction inlet parts and the said pump parts, these parts reduce the density of said slurry in a kind of controollable mode;

(h) density measuring parts that are contained on the said parts of vessels;

(i) program controlling element has an input end and mouth and input end is connected to the density measuring parts that are used for measuring in the slurry density of said conduit, and produces the parts corresponding to the signal of said density at mouth;

(j) fluid source;

(k) one second pump parts, it has an intake and an outlet that is connected to said dilution parts that is connected to said fluid source; With

(l) dilution function unit, its receives from the signal of said program controlling element and control flows out and reaches the fluid of said dilution parts by said pump parts from said fluid source,

With this device, the increase of measured slurry density, the volume adding the fluid in the parts of vessels that connects suction inlet and slurry pump parts will be increased, and the minimizing of measuring density will cause the minimizing that is adding the fluid in the said parts of vessels.

2, device according to claim 1, be used to control the parts that flow to the fluid of said dilution parts from said fluid source, comprise that one has the valve of function unit, it is installed between second pump and the dilution parts, and the function unit that wherein is used for said valve is controlled by the output signal from program controlling element.

3, device according to claim 1, saidly be used to control the parts that flow to the fluid of said dilution parts from said fluid source and comprise the speed-changing driving device of linking said second pump, make it consistent with output signal from function unit with the rotating speed of controlling said pump.

4,, comprise being installed on around the said suction inlet parts and towards fluidisation nozzle, one the 3rd pump parts and the parts that connect said the 3rd pump parts and said fluidisation nozzle of said bottom according to claim 1,2 or 3 described devices.

5, according to claim 1,2 or 3 described devices, comprise one be installed on around the said suction inlet parts and towards the first class jet element and of said bottom be installed on said basin parts around and towards the second fluidisation jet element and the 3rd pump parts that are connected fluid and the said first and second fluidisation jet elements of said basin feature bottom.

6, according to claim 1,2 or 3 described devices, comprise being installed in the flow sensing part on the said pipe installation and a mouth being arranged, be connected to an input end of program controlling element.

7, according to claim 1,2 or 3 described devices, said suction inlet is bell-mouthed.

8, according to claim 1,2 or 3 described devices, the fluidisation jet element is the inside of pointing to said suction inlet parts.

9, device according to claim 1, said density measuring parts are connected to the parts of program controlling element, comprise the mass flow calculation parts that have density and a flow signal input end and a mouth, said density input end is connected to said density measuring parts, said mouth then is connected to the input block of said programming controller, the flow sensing part that has a signal output part is installed in the said conduit, it is with the parts that this signal output part is connected with second input end of flow signal input end and program controlling element, thereby said flow can be controlled between minimum and the maximum flow, simultaneously, the dilution function unit makes by the measured density of density measuring parts and remains on a certain numerical value that mass flow rate signal determined that the mass flow calculation parts are sent.

10, device according to claim 9 comprises a speed-changing driving device, and this actuating device has a signal input part to be connected to second mouth of said program controlling element and one by being mechanically connected to the mouth of said slurry pump parts.

11, device according to claim 1, comprise a first flow sensing element that is contained in the said parts of vessels, wherein said program controlling element is connected to parts on the said density measuring parts, comprise one second program controlling element, these parts have the input end and the mouth that is connected to the first input end of a multiplier that are connected to said density measuring parts, parts on one second input end that said first flow sensing element mouth is connected to said multiplier, with one the output product parts of said multiplier are connected to the parts of the input end of said program controlling element, can make by the measured flowrate variation of first flow sensing element with this device to cause simultaneously that all the fluid flow that flows to the dilution parts from the water source takes place by same the variation.

12, device according to claim 11, comprise one second flow sensing part, it measures the flow that flows to the dilution parts from fluid source, and its output signal is sent to one second input end of programming controller, can make the signal of second flow sensing part provide feedback with this device, and provide the information of the actual flow that flows out from the water source pass to the dilution parts to programming controller.

13, according to claim 11 or 12 described devices, comprise one the 3rd program controlling element, these parts have the input end and the mouth that are connected to the mouth of first flow sensing element, variable speed drive (VSD) parts that are connected to controollable slurry pump parts, be connected to the parts of variable speed drive (VSD) parts with a mouth the 3rd programming controller, and the predetermined value parts that are used for the 3rd program controlling element, can make by the flow of conduit with this device and to be controlled by the 3rd program controlling element.

Images