CN103419140A - Supplied sand concentration control method for post-mixing high-pressure jet cleaning, and apparatus thereof - Google Patents
Supplied sand concentration control method for post-mixing high-pressure jet cleaning, and apparatus thereof Download PDFInfo
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- CN103419140A CN103419140A CN2012101674746A CN201210167474A CN103419140A CN 103419140 A CN103419140 A CN 103419140A CN 2012101674746 A CN2012101674746 A CN 2012101674746A CN 201210167474 A CN201210167474 A CN 201210167474A CN 103419140 A CN103419140 A CN 103419140A
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Abstract
The invention relates to a supplied sand concentration control method for post-mixing high-pressure jet cleaning, and an apparatus thereof. The method is characterized in that a sand supply tube sand suction port (7) is inserted into a sand supply barrel (6) under the action of an elevating device (4), a slurry containing a certain concentration of hard abrasive particles is directly sucked from the sand supply barrel (6) through a suction force transmitted by a sand supply tube (1), a detection system (2) precisely detects the weight of the sand supply tube between two end portion support points (9) and the weight of the slurry in the tube through the two end portion support points (9) in the detection system (2) and a clamping support (10) and a weight measuring instrument (11) at the central portion of the detection system (2), and the above obtained weights are compared with a practical sand density and the weights under all concentrations to determine that the concentration of the slurry in the sand supply tube (1) between the two support points (9) reaches a rated pumping concentration requirement and whether sand supply tube sand suction port (7) is moved or not. The method and the apparatus can be widely used for controlling the mixed concentration of different kinds of hard particles and liquids, and the hard abrasive particles comprise garnet, iron sand, cut wire slot, stainless steel slot and the like, and the liquids comprise liquid water, oil and the like.
Description
Technical field
The present invention relates to rear mixing jet and clean field, particularly, the present invention relates to that rear mixing jet cleans for sand concentration control technology, more specifically, the present invention relates to that a kind of rear mixing jet cleans for sand concentration control method and device.Described rear mixed high-voltage jet flow cleaning is with being mainly used in realizing to controling effectively for the pulp consistency in sandpipe in rear mixing jet system for sand concentration control method and device, to realize that the concentration in carrying out the mortar course of conveying is controlled to different types of hard thing hard abrasive material, guarantee can be stable for the sand system supply the mortar of specified concentration to spraying system, guarantee to supply the phenomenons such as sandpipe does not stop up, the sand amount is very few, realize thus the strict control to rear mixing jet characteristic, after effectively improving, mixing jet cleans the effect stability of same target.
Background technology
Rear mixing jet cleaning technique is to adopt high-pressure water jet to drive tiny hard composition granule, after with the high pressure water level carrier, hard composition granule being accelerated to sufficiently high speed, washed away, bombarded to the target thing, thereby realized effective cleaning of corrosion layer (as corrosion layer, firecoat) to each type products surface, skin of paint, corner section machined burrs etc.
Under normal conditions, consider the convenient, fast property of cleaning operation, this area adopts a kind of cleaning technique that is called rear mixing jet usually.Described technology is by pressure charging system, as three-throw ram pump, hydraulic pressure is pressurized to sufficiently high stress level, as 10Mpa～80Mpa, simultaneously, this water under high pressure is passed to rear mixing nozzle place.Rear mixing nozzle relies on the special form chamber of self, when spraying, water flowing automatically produces the self-suction of a correspondence, this self-suction is the basic motive source of sand road supply, this self-suction is inserted in the mortar inlet nozzle that will be mixed with the finite concentration sand grains for the suction tube in sand bucket by one, and in the hybrid chamber in nozzle, complete after mixing to outer injection, so realize final rear mixing jetting, with this, realize the purpose of cleaning.
In the stable control of described this mortar output scheme, its core component is for sand bucket.As shown in Figure 1, usually, in order to obtain the mortar that the suction slurry is required specified concentration, inhale sand mouth 7 for sandpipe and directly insert for sand bucket, and describedly inhale sand mouth 7 for sandpipe and need to be inserted into certain degree of depth, with the slurry concentration guaranteeing to inhale the sand mouth for sandpipe required pulp consistency just.
Yet, in the stable control of described this mortar output scheme, because the medium storage interior for sand bucket is in continuous dynamic change, and the storage of slurry directly affects the slurry concentration distribution mode, therefore, remain for sandpipe and inhale sand mouth 7 when sustained height, the slurry concentration of its suction is not in full accord, but the marked change with the variation of slurry storage in bucket.For this reason, for reaching stable jet cleaning effect, must remain that the slurry concentration for 7, sandpipe suction sand mouth remains consistent, this must carry out the adjustment of continuous position along with the variation of slurry storage in bucket with regard to requiring to inhale sand mouth 7 for sandpipe, remain unanimously to reach contained solid rigid abrasive particle material concentration in final required injection fluid, thereby meet the cleaning performance all-the-time stable.
By the detailed investigation to carrying out in domestic and international association area, there are no the effective solution targetedly of the tool in correlative technology field.
Summary of the invention
For addressing the above problem, the object of the invention is to: provide a kind of rear mixed high-voltage jet flow cleaning with supplying sand concentration control method and control device thereof, described rear mixed high-voltage jet flow cleaning is with for sand concentration control method and control device thereof, stablizing control for pulp consistency in sandpipe, the variation characteristic of medium storage that can be based on in sand bucket and thereupon impact inhale the Changing Pattern of sand mouth concentration for sandpipe, realize carrying out effectively stable control to inhale sand mouth concentration for sandpipe.
Rear mixed high-voltage jet flow cleaning of the present invention is with controlling applicable to the stable output under the variable concentrations value of single kind sand grains and liquid medium for sand concentration control method and device, and by the timely detection for sandpipe medium weight to certain-length output, adopt a kind of corresponding control algolithm to realize inhaling for sandpipe the height change of sand mouth 7, realize the biphasic mixture of the hard composition granule of multiple difference is exported effective control of concentration, thereby improve stability and the uniformity of washer jet cleaning performance, reach the effective control to rear mixing nozzle cleaning performance.
For achieving the above object, rear mixed high-voltage jet flow cleaning of the present invention is with as follows for sand concentration control method technical scheme:
A kind of rear mixed high-voltage jet flow cleaning is with supplying the sand concentration control method, system utilizes weight detecting and control action to realize the stable control to the pulp consistency in sandpipe, thereby realize sucking the stable control of sand amount in rear hybrid injection system, described sand is the hard abrasive material, described mortar is the slurry containing hard abrasive material and liquid medium, comprise: the built-in sand bucket (6) of the confession containing described slurry, be placed in confession sand bucket (6), there is the confession sandpipe (1) of inhaling sand mouth (7) for sandpipe, it is characterized in that:
The gravimetric value that detection system 2 records for slurry in sandpipe is passed in control system 8, by the standard weight value is analyzed to the allowed band that rear discovery exceeds specified gravimetric value, show to exceed standard for the concentration of medium in sandpipe 1, now, control system 8 is directly controlled lowering or hoisting gear 4, lowering or hoisting gear 4 directly will move up for the position of sandpipe suction sand mouth 7, until the slurry gravimetric value in sandpipe that supplies that detection system 2 records meets gravimetric value corresponding to specified concentration;
The gravimetric value that detection system 2 records for slurry in sandpipe is passed in control system 8, after the standard weight value is analyzed to the allowed band of rear discovery underweight value, show for the concentration of medium in sandpipe 1 too low, control system 8 is directly controlled lowering or hoisting gear 4, pass through lowering or hoisting gear, directly downward slow movement the in position of sand mouth 7 will be inhaled for sandpipe, until the slurry gravimetric value in sandpipe that supplies that detection system 2 records meets gravimetric value corresponding to specified concentration.
Driving the lowering or hoisting gear moved for sandpipe suction sand mouth 7 can be pneumatic/hydraulic piston cylinder, or adopts gear & rack structure, realizes inhaling for sandpipe the vertical lift of sand mouth 7.
Described suction force is mainly provided by the spraying system connected for sandpipe 1, this suction force supplies sandpipe to inhale sand mouth 7 in the mode of negative pressure by being passed to for sandpipe 1, the suction force of this spraying system is by the pressure parameter sprayed and flow parameter decision, and pressure is higher, flow is larger, and its suction force is larger.Thus, directly from for being drawn into sand bucket 6, containing certain hard abrasive material concentration.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is with supplying the sand concentration control method, it is characterized in that, described hard abrasive material is generally mineral abrasive particle material or artificial abrasive particle material, described mineral abrasive particle material is selected from garnet, river sand, quartz sand, and described artificial abrasive particle material is selected from artificial shot, steel sand, steel wire cut pill.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is with supplying the sand concentration control method, it is characterized in that, the hard abrasive material particle size values of described slurry is at 0.05mm～1.5mm, and concentration value is recently weighed with the volume of hard abrasive material/slurry, and volume ratio is 5%～50%.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is with supplying the sand concentration control method, it is characterized in that, the hard abrasive material particle size values of described slurry is at 0.3-0.5mm, and described concentration value is recently weighed with the volume of hard abrasive material/slurry, and volume ratio is 5%～6%.
Described detection system 2 records slurry in pipe, and the weight parameter that contains the slurry of hard abrasive material comprises the density of slurry and the gravimetric value under each concentration.
Described weight parameter can be recorded by two parameters, one is the mixing parametric of agitator, one is the medium parameter in agitator, and mixing parametric is by the characteristic (impeller diameter, inclination angle, blade quantity, blade shape and blade rotary angular speed decide) of agitator and the volume ratio of granularity, abrasive particle material density and abrasive particle material and the water of the interior hard abrasive material of bucket.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention, with for the sand concentration control method, is characterized in that the described mixture that is garnet and water containing the slurry of hard abrasive material.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is used for the sand concentration control method, it is characterized in that, when described hard abrasive material is mineral matter abrasive particle material, its density exists
When described hard abrasive material is artificial metal worn particle material, its density exists
Be analyzed by the gravimetric value under the density with actual sand mold (slurry), each concentration by measured value thus, thereby determine whether the slurry concentration in sandpipe 1 between two strong points 9 reaches the specified concentration requirement of pumping.
Described specified pump that concentration requirement comes in technological requirement, described technological requirement and plate are wide, the plate face speed of service decides: the plate face is wider, the speed of service is higher, the required concentration of pumping is higher, otherwise otherwise, thereby determine whether for sandpipe, inhale sand mouth 7 needs to carry out the lifting displacement.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is with supplying the sand concentration control method, it is characterized in that, described detection system 2 is a Weight detecting device, this checkout gear is comprised of two end bites 9 and intermediate detection holding frame 10 and weight detecting instrument 11, wherein, two end bites 9 remain that with the outside wall surface for sandpipe 1 line contacts, between two end bites 9, clamping is looked the difference for the difference in sandpipe footpath for the length value of sandpipe 1, but meets the pipe external diameter value of the span value of described end bite>10 times.
Because, if span is too low, pipeline can cause the flexible pipe sclerosis under certain negative pressure, thereby the error that the measurement progress of weight causes is enlarged markedly, so that can't realize Measurement accuracy.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is used for the sand concentration control method, it is characterized in that, between described two end bites 9, clamping is 230-250mm for the length of sandpipe 1, and described is 23-25mm for the sandpipe external diameter.
In addition, the internal diameter for sandpipe is generally 10mm～30mm, preferred 20mm.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is with supplying the sand concentration control method, it is characterized in that, described detection system 2 is by holding frame 10 and the weight measurement instrument 11 at inner two end portion supports points 9 and middle part, precision records the weight parameter for slurry in the sandpipe pipe between two end portion supports points 9, thereby clearly for sandpipe, inhale sand mouth 7, whether needs to carry out displacement.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is with supplying the sand concentration control method, it is characterized in that, detection system 2 records 1 gravimetric value for sandpipe and is passed in control system 8, by the standard weight value is analyzed to the allowed band that rear discovery exceeds specified gravimetric value, show to exceed standard for the concentration of medium in sandpipe 1, now, control system 8 is directly controlled lowering or hoisting gear 4, lowering or hoisting gear 4 directly will move up for the position of sandpipe suction sand mouth 7, until the gravimetric value that detection system 2 records meets gravimetric value corresponding to specified concentration;
The gravimetric value that detection system 2 records for sandpipe is passed in control system 8, after the standard weight value is analyzed to the allowed band of rear discovery underweight value, show for the concentration of medium in sandpipe 1 too low, control system 8 is directly controlled lowering or hoisting gear 4, lowering or hoisting gear 4 passes through lowering or hoisting gear, directly downward slow movement the in position of sand mouth 7 will be inhaled for sandpipe, until the gravimetric value that detection system 2 records meets gravimetric value corresponding to specified concentration.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is used for the sand concentration control method, it is characterized in that, middle part holding frame 10 cylinder narrower with the outside wall surface maintenance for sandpipe 1 contacts, the width value<10mm of cylinder; Weight detector 11 obtains required must the meet<2mm of displacement variable of accurate gravimetric value.
Here, the meaning of cylinder contact is that middle part holding frame (10) is to contact fully with supplying, between sandpipe (1), one section face of cylinder is arranged, and can guarantee certainty of measurement like this.In addition, the width value<10mm of cylinder; Must the meet<2mm of displacement variable of weight detector (11), i.e. each mobile 2mm that is not more than.Because can harden at the negative pressure state bottom hose, flexible pipe after sclerosis can produce certain capable of resisting deflection ability, if move down distance value large (if being greater than 2mm), amount of deflection is just very large, the gravimetric value that the weight measurement instrument is measured like this is the part gravimetric value in fact, the gravimetric value of another part is to resist by the flexible pipe self after sclerosis, so each displacement can not surpass 2mm.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention, with for the sand concentration control method, is characterized in that, described is flexible pipe for sandpipe 1, and tube wall possesses certain shape anti-pressure ability, and its resistance to compression scope meets malleation >=0.3Mpa, negative pressure<-0.5Mpa.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is used for the sand concentration control method, it is characterized in that, described end bite 9 remains on same horizontal line with the central point of middle part holding frame 10.
Rear mixed high-voltage jet flow cleaning of the present invention is with as follows for sand concentration control apparatus technical scheme:
A kind of rear mixed high-voltage jet flow cleaning is with supplying the sand concentration control apparatus, system utilizes the Detection & Controling of weight to be used for realizing the stable control to the pulp consistency in sandpipe, thereby realize it is characterized in that sucking the stable control of sand amount in rear hybrid injection system:
The confession sand bucket 6 of the slurry that contains certain hard abrasive material concentration inside is housed, inhale sand mouth 7 at the described lowering or hoisting gear 4 for moving up and down in sand bucket 6 for making for sandpipe, by for sandpipe 1, connecting successively detection system 2 and lowering or hoisting gear 4,4 lowering or hoisting gears are by control signal wire 5 connection control system 8 of lowering or hoisting gear, and control system 8 connects detection system 2 by signal transmssion line.
Rear mixed high-voltage jet flow cleaning according to the present invention is used for the sand concentration control apparatus, it is characterized in that, detection system 2 is a cylinder rod shaped structure, inside is provided with two end portion supports points 9, middle part arranges holding frame 10, supports for sandpipe, in sandpipe, tubular weight measuring instrument 11 is set.
When recording 1 gravimetric value for sandpipe, detection system 2 is passed in control system 8, after the standard weight value being analyzed to the allowed band that rear discovery exceeds specified gravimetric value, show to exceed standard for the concentration of medium in sandpipe 1, control system 8 is directly controlled lowering or hoisting gear 4, lowering or hoisting gear 4, directly will be upwards slowly mobile for the position of sandpipe suction sand mouth 7 by lifting.
CONCENTRATION DISTRIBUTION law curve for sand bucket 6 inside, in the situation that determine abrasive particle material kind, abrasive particle material granularity and with the mixed volume ratio of water and after locking mixing parametric, being rule for the slurry concentration in sand bucket 6 with the dark height value of bucket that supplies sand bucket 6 distributes, along with the increase of the degree of depth, Enrichment, until the gravimetric value that detection system 2 records meets gravimetric value corresponding to specified concentration.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is with supplying the sand concentration control apparatus, it is characterized in that, described detection system 2 is a Weight detecting device, this checkout gear is comprised of two end bites 9 and intermediate detection holding frame 10 and weight detecting instrument 11, wherein, two end bites 9 remain that with the outside wall surface for sandpipe 1 line contacts, between two end bites 9, clamping is looked the difference for the difference in sandpipe footpath for the length value of sandpipe 1, but must meet the span value of described end bite > the pipe external diameter value of 10 times.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is used for the sand concentration control apparatus, it is characterized in that, middle part holding frame 10 cylinder narrower with the outside wall surface maintenance for sandpipe 1 contacts, the width value<10mm of cylinder; Weight detector 11 displacement variable meet 2mm.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is with supplying the sand concentration control apparatus, and weight measurement instrument 11 is the spring mechanical measuring instrument, or common detector for displacement measuring, by shift value, transforms weight measurement.
Diagram middle part holding frame 10 is annular clamp device, clamp a pipe joint road in centre position, weight sag of chain by this clamping position is measured gravimetric value, realize managing the theoretical calculation of interior weight, thereby reach the correcting action that instructs to suction concentration, it obtains the required displacement variable of accurate gravimetric value must meet 2mm.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention, with for the sand concentration control apparatus, is characterized in that, described is flexible pipe for sandpipe 1, and tube wall possesses certain shape anti-pressure ability, and its resistance to compression scope meets malleation >=0.3Mpa, negative pressure<-0.5Mpa.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is with supplying the sand concentration control apparatus, and described end bite 9 remains on same horizontal line with the central point of middle part holding frame 10.
A kind of rear mixed high-voltage jet flow cleaning according to the present invention is with supplying sand concentration control method and control device thereof, that described concentration control system can be widely used in is different types of/and particularly the hard composition granule of single kind and the melting concn of liquid are controlled, wherein hard thing hard abrasive material can be garnet, iron sand, steel wire cut pill, stainless shot etc., and liquid medium is aqueous water, wet goods.
The accompanying drawing explanation
Fig. 1 is the general arrangement schematic of mortar supply of the present invention for sandpipe.
Fig. 2 is detection system 2 schematic diagrames.
The detailed construction schematic diagram that Fig. 3 is detection system 2 inside.
In figure, 1 control signal wire for sandpipe, 2 detection systems, 3 signal transmssion lines, 4 lowering or hoisting gears, 5 lowering or hoisting gears, 6 is inhaled sand mouth, 8 control systems, 9 bites, the holding frame of 10 weight measurement points, 11 weight measurement instrument for sand bucket, 7 for sandpipe.
The specific embodiment
Below, with embodiment, illustrate rear mixed high-voltage jet flow cleaning of the present invention with supplying the sand concentration control method.
Embodiment
As mentioned above, this programme is to utilize the measurement that mortar is pumped for weight in one section flexible pipe in sandpipe to realize mortar is pumped for the inner slurry concentration of sandpipe 1 and carried out the method for accurately controlling, specifically as shown in Fig. 1～Fig. 2.For guaranteeing that this method has desirable control effect, embodiments of the present invention are as follows:
At first need the specified index in control system 8 is carried out to experimental demonstration, at a certain abrasive particle material (as 40 order garnets), under finite concentration, adopt the soft for sandpipe 1 and putting by two end portion supports for sand of a certain special type at 9 o'clock, the actual measured value occurred of gravity measuring equipment 11 is how many, by experiment repeatedly, clearly the schedule weight value under this abrasive particle material variable concentrations and corresponding weight allowed band, as the control criterion in control system 8.
When carrying out actual job, inhale sand mouth 7 for sandpipe is inserted into for a certain height maintenance in sand bucket 6 motionless under the effect of lowering or hoisting gear 4, then directly from supply sand bucket 6, be drawn into the slurry that contains certain hard abrasive material concentration by the suction force passed over for sandpipe 1, slurry concentration is now inhaled the actual concentration for sand bucket 6 inside of sand mouth 7 positions just for sandpipe, when pulp flow during to detection system 2, maintain the spacing of 200mm between two end portion supports points 9.Two strong points are rigid support, therefore certainly lead to certain deflection for sandpipe 1 because inside is connected with slurry for sand is soft, this deflection is under the effect of holding frame 10 and weight measurement instrument 11, by weight transmitting to measuring instrument 11, thereby obtain a gravimetric value that supplies sand flexible pipe and interior media in this length 200mm, this measured value is passed to control system 8 by holding wire 3 and carries out parameter comparison.
(concrete allowed band adopts relative ratio to carry out scope definition to find to exceed the allowed band of specified gravimetric value by measured value after control system 8 comparative analyses, this allowed band is: 0%～78%, preferable range is ± 5%) after, show to exceed standard for the concentration of medium in sandpipe 1, control system 8 is directly controlled lowering or hoisting gear 4, lowering or hoisting gear 4, directly will be upwards slowly mobile for the position of sandpipe suction sand mouth 7 by lowering or hoisting gear.
Corresponding above-mentioned allowed band, according to translational speed be 5mm/s, often to move the step-length moved a step be that 5mm calculates, each displacement is 20mm, until the gravimetric value that detection system 2 records meets gravimetric value corresponding to specified concentration, gets final product.
Find the allowed band of measured value underweight value after control system 8 comparative analyses after, show for the concentration of medium in sandpipe 1 too low, control system 8 is directly controlled lowering or hoisting gear 4, lowering or hoisting gear 4 passes through lowering or hoisting gear, directly will inhale downward slow movement the in position of sand mouth 7 for sandpipe, get final product until the gravimetric value that detection system 2 records meets gravimetric value corresponding to specified concentration.
Abovely by means of specific embodiment, the specific embodiment of the present invention has been described; but it should be understood that; here concrete description should not be construed as the restriction to the spirit and scope of the invention; this invention can be used for the weight concentration of the different proportion mixture of hard composition granule and water is stablized to control; all these one of ordinary skilled in the art, reading the various modifications of after this specification, above-described embodiment being made, belong to the scope that the present invention protects.
The present invention takes full advantage of the measurement for gravimetric value in the sand flexible pipe is reached the accurate control for slurry weight ratio in the sand flexible pipe, by reasonable measurement and comparative analysis, can realize the slurry weight specific concentration for sandpipe 1 inside is stablized to control.Because institute of the present invention employing technology is ripe, can implement, apply feasible.On the other hand, the present invention can improve surface-treated efficiency and stability.Therefore, the present invention has broad application prospects at the surface treatment production field.
Claims (13)
- After one kind the mixed high-voltage jet flow cleaning with for the sand concentration control method, system utilizes weight detecting and control action to realize the stable control to the pulp consistency in sandpipe, thereby realize sucking the stable control of sand amount in rear hybrid injection system, described sand is the hard abrasive material, described mortar is the slurry containing hard abrasive material and liquid medium, comprise: the built-in sand bucket (6) of the confession containing described slurry, be placed in confession sand bucket (6), there is the confession sandpipe (1) of inhaling sand mouth (7) for sandpipe, it is characterized in that:Inhale sand mouth (7) for sandpipe is inserted into in sand bucket (6) under the effect of lowering or hoisting gear (4), then directly from supply sand bucket (6), be drawn into the slurry that contains certain hard abrasive material concentration and liquid medium by the suction force passed over for sandpipe (1), slurry is passed to detection system (2), detection system (2) records for slurry in sandpipe, contain the weight parameter of the slurry of hard abrasive material and liquid medium, by the weight parameter of described slurry and the density of actual slurry, gravimetric value under each concentration is analyzed, thereby determine whether the slurry concentration for sandpipe (1) be positioned between two strong points (9) reaches the specified concentration requirement of pumping, and determine accordingly whether for sandpipe, inhale sand mouth (7) needs to carry out the lifting displacement,The gravimetric value that detection system (2) records for slurry in sandpipe is passed in control system (8), by the standard weight value is analyzed to the allowed band that rear discovery exceeds specified gravimetric value, show for the interior slurry concentration over-standard of sandpipe (1), now, control system (8) is directly controlled lowering or hoisting gear (4), lowering or hoisting gear (4) directly will move up for the position of sandpipe suction sand mouth (7), until the slurry gravimetric value in sandpipe that supplies that detection system (2) records meets gravimetric value corresponding to specified concentration;The gravimetric value that detection system (2) records for slurry in sandpipe is passed in control system 8, after the standard weight value is analyzed to the allowed band of rear discovery underweight value, show for the interior slurry concentration of sandpipe (1) too low, control system (8) is directly controlled lowering or hoisting gear (4), pass through lowering or hoisting gear, directly downward slow movement the in position of sand mouth (7) will be inhaled for sandpipe, until the slurry gravimetric value in sandpipe that supplies that detection system (2) records meets gravimetric value corresponding to specified concentration.
- 2. a kind of rear mixed high-voltage jet flow cleaning as claimed in claim 1 is with supplying the sand concentration control method, it is characterized in that, described hard abrasive material is mineral abrasive particle material or artificial abrasive particle material, described mineral abrasive particle material is selected from garnet, river sand, quartz sand etc., described artificial abrasive particle material is selected from artificial shot, steel sand, steel wire cut pill, the hard abrasive material particle size values of described slurry is at 0.05mm～1.5mm, and concentration value is recently weighed with hard abrasive material/slurry Chinese volume, and volume ratio is 5%～50%.
- 3. a kind of rear mixed high-voltage jet flow cleaning as claimed in claim 1, with for the sand concentration control method, is characterized in that, the described mixture that is garnet and water containing the slurry of hard abrasive material.
- 4. a kind of rear mixed high-voltage jet flow cleaning as claimed in claim 1, with for the sand concentration control method, is characterized in that, when described hard abrasive material is mineral matter abrasive particle material, its density is at 2.5～3.3 * 1000kg/m 3, when described hard abrasive material is artificial metal worn particle material, its density is at 7.8 * 1000kg/m 3.
- 5. a kind of rear mixed high-voltage jet flow cleaning as claimed in claim 1 is with supplying the sand concentration control method, it is characterized in that, described detection system (2) is a Weight detecting device, this checkout gear is comprised of two end bites (9) and intermediate detection holding frame (10) and weight detecting instrument (11), wherein, two end bites (9) remain that with the outside wall surface for sandpipe (1) line contacts, between two end bites (9), clamping is looked the difference for the difference in sandpipe footpath for the length value of sandpipe (1), but meet the span value of bite > the pipe external diameter value of 10 times.
- 6. a kind of rear mixed high-voltage jet flow cleaning as claimed in claim 1 is with supplying the sand concentration control method, it is characterized in that, described detection system (2) is by the holding frame (10) and weight measurement instrument (11) at inner two end portion supports points (9) and middle part, precision records the weight parameter for slurry in sandpipe and pipe between two end portion supports points (9), thereby clearly for sandpipe, inhale sand mouth (7), whether needs to carry out displacement.
- 7. a kind of rear mixed high-voltage jet flow cleaning as claimed in claim 1, with for the sand concentration control method, is characterized in that, middle part holding frame (10) keeps cylinder to contact with the outside wall surface for sandpipe (1), the width value<10mm of cylinder; Meet<2mm of the displacement variable of weight detector (11).
- 8. a kind of rear mixed high-voltage jet flow cleaning as claimed in claim 1 is with supplying the sand concentration control method, it is characterized in that, described is flexible pipe for sandpipe (1), and tube wall possesses certain shape anti-pressure ability, its resistance to compression scope meets malleation >=0.3Mpa, negative pressure<-0.5Mpa.
- After one kind the mixed high-voltage jet flow cleaning with for the sand concentration control apparatus, system utilizes the Detection & Controling of weight to be used for realizing the stable control to the pulp consistency in sandpipe, thereby realize sucking the stable control of sand amount in rear hybrid injection system, it is characterized in that, the confession sand bucket (6) of the slurry that contains certain hard abrasive material concentration inside is housed, inhale sand mouth (7) at the described lowering or hoisting gear (4) moved up and down in sand bucket (6) that supplies for making for sandpipe, by for sandpipe (1), connecting successively detection system (2) and lowering or hoisting gear (4), control signal wire (5) connection control system (8) by lowering or hoisting gear, control system (8) connects detection system (2) by signal transmssion line.
- 10. rear mixed high-voltage jet flow cleaning as claimed in claim 10 is with supplying the sand concentration control apparatus, it is characterized in that, described detection system (2) is a cylinder rod shaped structure, inside is provided with two end portion supports points (9), middle part arranges holding frame (10), support for sandpipe, in sandpipe, tubular weight measuring instrument (11) is set.
- 11. a kind of rear mixed high-voltage jet flow cleaning as claimed in claim 10 is with supplying the sand concentration control apparatus, it is characterized in that, described detection system is a Weight detecting device, this checkout gear is comprised of two end bites (9) and intermediate detection holding frame (10) and weight detecting instrument (11), wherein, two end bites (9) remain that with the outside wall surface for sandpipe (1) line contacts, between two end bites (9), clamping is looked the difference for the difference in sandpipe footpath for the length of sandpipe (1), but must meet the pipe external diameter value of 10 times of the span values of described end bite.
- 12. a kind of rear mixed high-voltage jet flow cleaning as claimed in claim 10 is used for the sand concentration control apparatus, it is characterized in that, the holding frame cylinder narrower with the outside wall surface maintenance for sandpipe in described middle part contacts, the width value<10mm of cylinder; Meet<2mm of weight detector (11) displacement variable.
- 13. a kind of rear mixed high-voltage jet flow cleaning as claimed in claim 12 is with supplying the sand concentration control apparatus, it is characterized in that, described is flexible pipe for sandpipe (1), and tube wall possesses certain shape anti-pressure ability, its resistance to compression scope meets malleation >=0.3Mpa, negative pressure<-0.5Mpa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210167474.6A CN103419140B (en) | 2012-05-25 | 2012-05-25 | Mixed high-voltage jet flow cleaning sand supplying concentration control method and device after one |
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|---|---|---|---|
| CN201210167474.6A CN103419140B (en) | 2012-05-25 | 2012-05-25 | Mixed high-voltage jet flow cleaning sand supplying concentration control method and device after one |
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| CN103419140A true CN103419140A (en) | 2013-12-04 |
| CN103419140B CN103419140B (en) | 2016-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198801A (en) * | 2020-11-18 | 2021-01-08 | 兰州理工大学 | Mine filling slurry concentration robust control method |
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| JPS6140506B2 (en) * | 1982-06-28 | 1986-09-09 | Ishikawajimaharima Jukogyo Kk | |
| JPS6331347B2 (en) * | 1982-09-10 | 1988-06-23 | Shinnippon Seitetsu Kk | |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198801A (en) * | 2020-11-18 | 2021-01-08 | 兰州理工大学 | Mine filling slurry concentration robust control method |
| CN112198801B (en) * | 2020-11-18 | 2021-07-23 | 兰州理工大学 | Mine filling slurry concentration robust control method |
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| CN103419140B (en) | 2016-12-14 |
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