CN103394661B - A kind of vane type measuring pump - Google Patents
A kind of vane type measuring pump Download PDFInfo
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- CN103394661B CN103394661B CN201310323487.2A CN201310323487A CN103394661B CN 103394661 B CN103394661 B CN 103394661B CN 201310323487 A CN201310323487 A CN 201310323487A CN 103394661 B CN103394661 B CN 103394661B
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Abstract
A kind of vane type measuring pump, comprise, the pump housing, central authorities offer through hole, form a cavity structure in the pump housing, and charging hole, steam vent are established in pump housing top; Discharge opening established by the bottom pump housing; Pump housing both end sides establishes outer end cap; Impeller, is located in pump housing cavity structure, it establishes blade, and impeller both end sides establishes inner end cap; Upper connecting base, is located at pump housing upper surface; Lower connecting base, is located at pump housing lower surface; Tremie pipe, its one end is connected to lower connecting base material hole; Mixing tube, it is established the connecting hole planted for the tremie pipe other end; Variable-frequency motor and reductor, power transmission shaft, be located at outside the outer end cap of pump housing side, and the impeller that power transmission shaft is placed in the pump housing through outer end connects.The present invention make slag adding machine under very little feeding tolerance condition add slag speed measurable and regulation and control; it is continuous and even that guarantee is simultaneously fed in raw material; guarantee each material inlet to add slag speed adjustable; the interrupted feed preventing from air from pouring in down a chimney rear covering slag adding, guarantees that covering slag adds the reasonability of the speed of crystallizer.
Description
Technical field
The invention belongs to measuring equipment, particularly a kind of vane type measuring pump.
Background technology
Automatic device for adding protective slag in continuous-casting crystallizer; its function is in conticaster casting process; according to steel grade, dissimilar covering slag is added on crystallizer molten steel surface automatically and equably, prevents molten steel secondary oxidation, dispel the heat too fast, play lubrication simultaneously, import into, fill the effects such as air gap.
At present; the similar producer of continuous casting in China machine adopts that manually to add covering slag be main substantially; its defect adds the quantity of slag to be difficult to control; simultaneously; manually add slag mode due to the covering slag once pushed too concentrated; the heap of covering slag is heavy easily forms a concave pit on crystallizer molten steel surface and molten slag layer, easily causes the defects such as the slag inclusion of slab product.The main function of crystallizer automatic slag adding machine will substitute exactly and manually add slag, realizes covering slag and evenly adds, prevent strand slag inclusion, is also one of key equipment realizing automation cast simultaneously.
In the world; the conticaster of some large-scale integrated iron and steel works; the Hilton steel mill of the Di Sen factory of some factories of such as nippon, Germany, Hertford steel mill of Niu Ke company of the U.S. and Steel Co., of Canada Ltd. all employ covering slag automatic slag adding machine; in order, the quality of slab obtains good improvement to overall operation.The automatic slag adding machine that these steel mills use, have plenty of designed, designed and manufacture, to apparatus structure, Yan Youfan has letter, wherein with casting machine construction with to transform the service condition of the synchronous slag adding machine equipment dropped into more better.There are the KBK company of Japan, Austrian NUMTEC company etc. in the manufactory manufacturing this equipment in the world.
Automatic slag adding machine all have employed screw rod feeding style; covering slag is transported to charge door by the spring namely by rotating in charge pipe; cloth tube swings back and forth along crystallizer width in running; this version makes slag adding machine volume ratio huger; screw rod feeding style makes again covering slag efflorescence comparatively serious; the speed that adds of covering slag realizes by the rotary speed controlling screw rod, and this two kind equipment in use exists different defects separately, integrates as follows:
1. Whole Equipment length is long, mechanism is huger, many with the interference of field apparatus, uses inconvenience, comprising: slag charge bucket covering slag adds inconvenient, and slag adding machine is located, move, deposit inconvenience, easily breaks equipment when abnormal production;
2. adopt screw rod transmission, the dust formation of covering slag very seriously, have impact on mold flux property, simultaneously contaminated environment, increases the consumption of covering slag, and on-the-spot existence simultaneously adds slag noise;
3. function imperfection, cannot add up consumption, and feed bin emptying equally will by adding cinder notch, and the time is long, also cannot adjust delivery rate separately according to mold liquid level characteristic both sides;
4. add slag tube material and easily interference is produced to mold liquid level detecting sensor;
5. equipment is complicated, and manufacturing cost is high, difficult in maintenance, and the energy consumption of motor is larger.
In casting process, no matter adopt automatic slag or manually add slag, adding the quantity of slag is have stricter regulation.The suitable filling adding the quantity of slag and should meet lubrication in casting process between casting blank shell and copper coin and air gap, that covering slag on molten steel face forms rational three-decker again, i.e. uppermost slag layer, middle sinter layer and the melting layer directly contacted with molten steel, wherein uppermost slag layer has the effect of insulation, melting layer can flow between copper coin and base shell, also can play the effect of certain dross inclusion adsorption; Sinter layer is the transition zone of melting layer and slag layer.If the improper covering slag that will cause of addition is blocked up, be unfavorable for the observation of mold liquid level state, covering slag crosses the exposed oxidation that thin meeting causes molten steel face, also can directly cause the accidents such as disconnected slag bonding.And an important indicator of pouring into a mould safety and quality is weighed especially to the consumption that covering slag waters fluence in unit, the too small meeting of slag consumption causes strand slag inclusion seriously even the accidents such as bonding steel leakage to occur.
The task of automatic slag adding machine is not simply covering slag is added crystallizer, also will accomplish even, appropriate adding, and that therefore must consider covering slag in the process of design automatic slag adding machine adds metering.The slag adding machine of screw rod feeding style controls to add slag speed according to the velocity of rotation adding slag bar spring; And carry out from the mode that the metering employing of weight slag adding machine arranges control valve at material inlet.These two kinds of mode trueness errors are comparatively large, and these modes also cannot use on pneumatic feed type slag adding machine simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of vane type measuring pump; make slag adding machine under very little feeding tolerance condition add slag speed measurable and regulation and control; it is continuous and even that guarantee is simultaneously fed in raw material; guarantee each material inlet to add slag speed adjustable; the interrupted feed preventing from air from pouring in down a chimney rear covering slag adding, guarantees that covering slag adds the reasonability of the speed of crystallizer.
For achieving the above object, technical scheme of the present invention is:
A kind of vane type measuring pump, it comprises, the pump housing, and its central authorities offer a manhole, forms a cavity structure in the pump housing, and charging hole, steam vent are offered along its length respectively in the pump housing top at cavity structure top; Discharge opening offered by the pump housing bottom cavity structure; Pump housing both end sides arranges outer end cap; Impeller, be arranged in pump housing cavity structure, it established some blades, impeller both end sides establishes inner end cap, by some blades to coordinate with inner end cap along impeller circumference formed some can the accommodating cavity of accommodating slag charge; Upper connecting base, is arranged at pump housing upper surface, and on upper connecting base, the corresponding pump housing is provided with charging hole and steam vent, and upper connecting base is also provided with the installation limited bayonet and fixing threaded hole that are connected with hopper; Lower connecting base, is arranged at pump housing lower surface, and the corresponding pump housing discharge opening of lower connecting base offers material hole; Tremie pipe, its one end is connected to lower connecting base material hole; Mixing tube, it is established the connecting hole planted for the tremie pipe other end; Variable-frequency motor and corresponding reductor, power transmission shaft, be arranged at outside the outer end cap of pump housing side, and the impeller that power transmission shaft is placed in the pump housing through outer end connects.
Further, the axis hole place that the outer end cap of described pump housing transmission side passes for power transmission shaft establishes bearing.
The outer face that described impeller is corresponding with pump housing inwall is inclined-plane.Described impeller outer end face inclined-plane is the inclined-plane of 10 ~ 20 degree.
Described impeller adopts polytetrafluoroethylmaterial material.
Mud hole and sealing bolt is established between corresponding inner end cap and outer end cap bottom the described pump housing.
The blast pipe suitable for reading that one leads to slag adding machine hopper is vertically provided with in described steam vent.
The present invention is the intermediate link that slag adding machine connection hopper and slag charge blow between mechanism; main object be control and calculate covering slag flow, prevent the backtracking of air; guarantee that covering slag evenly flows out, realize the continuity of automatic slag, stability, adjustability and the addition in the unit interval and calculate.
Beneficial effect of the present invention:
Measuring pump volume of the present invention is little, and control accuracy is good, can in automatic slag process exactly Control protection slag add speed, solve sheet billet continuous casting automatic slag uniformity and to the free adjustment of the quantity of slag; Vane type measuring pump is also as the partition between feed bin and mixing tube simultaneously, prevents tracing back of feeding air, causes the airborne dust of putty or hopper inside, thus ensure that the stable of slag inclusion and uniformity, enormously simplify the device structure of automatic slag adding machine.
The present invention be close to production scene to covering slag add adjustment and control demand, pneumatic feed, reduce slag adding machine length dimension prerequisite under, achieve uniformity and the controllability of covering slag addition, there is wider marketing and application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the three-dimensional exploded view of embodiment of the present invention middle pump body.
Fig. 3 is the sectional view of embodiment of the present invention middle pump body.
Fig. 4 is the sectional arrangement drawings such as embodiment of the present invention middle pump body, impeller.
Fig. 5 is the stereogram of the embodiment of the present invention.
Detailed description of the invention
See Fig. 1 ~ Fig. 5, a kind of vane type measuring pump of the present invention, it comprises, the pump housing 1, its central authorities offer a manhole 101, and in the pump housing 1, form a cavity structure 100, the pump housing 1 top at cavity structure top offers charging hole 102, steam vent 103 along its length respectively; Discharge opening 104 offered by the pump housing 1 bottom cavity structure; The pump housing 1 both end sides arranges outer end cap 2,2 '; Impeller 3, is arranged in the pump housing 1 cavity structure 100, and it is established some blades 31,31 ', impeller both end sides establishes inner end cap 32,32 ', by some blades 31 to coordinate with inner end cap 32,32 ' along impeller 3 circumference formed some can the accommodating cavity 33 of accommodating slag charge; Upper connecting base 4, is arranged at the pump housing 1 upper surface, and on upper connecting base 4, the corresponding pump housing is provided with charging hole 41, steam vent 42 and blast pipe 44, and upper connecting base 4 is also provided with the installation limited bayonet 43 and fixing threaded hole that are connected with hopper; Lower connecting base 5, is arranged at the pump housing 1 lower surface, and the corresponding pump housing discharge opening 104 of lower connecting base 5 offers material hole 51; Tremie pipe 6, its one end is connected to lower connecting base 5 material hole 51; Mixing tube 7, it is established the connecting hole 71 planted for tremie pipe 6 other end; Variable-frequency motor 8 and corresponding reductor 9, power transmission shaft 10, be arranged at outside the outer end cap 2 of the pump housing 1 side, power transmission shaft 10 connects through the impeller 3 of outer end cap 2 in the pump housing 1.
Further, the axis hole place that the outer end cap 2 of the described pump housing 1 transmission side passes for power transmission shaft 10 establishes bearing 11.
The outer face 34 that described impeller 3 is corresponding with the pump housing 1 inwall is inclined-plane.Described impeller outer end face inclined-plane is the inclined-plane of 10 ~ 20 degree, reduces rotary resistance, prevent covering slag powdered with this.
Described impeller 3 adopts polytetrafluoroethylmaterial material, prevents from being rheid sand material or powder due to measuring pump transmission, and easily causes wearing and tearing and the generation of jam.
Corresponding inner end cap 32 bottom the described pump housing 1, between 32 ' and outer end cap 2,2 ', establish mud hole 105 and sealing bolt 12, twist off bolt when overhauling and can realize deslagging.
Described steam vent 103 is provided with the blast pipe 44 that leads to slag adding machine hopper.
Covering slag flows into the measuring pump pump housing by upper connecting base charging hole, then is joined in crystallizer through flexible pipe and cloth tube by gas conveying after flowing into mixing tube by the tremie pipe of the lower connecting base below the pump housing.
During work, inner end cap and impeller rotate simultaneously, ensure the clearance control between itself and the pump housing and sealing effectiveness, prevent the efflorescence of covering slag and the increase of rotary resistance; Form accommodating cavity between a rotating vane between inner end cap and impeller, between rotating vane, the size of accommodating cavity designs according to covering slag consumption scope.
The upper connecting base charging hole of direct connection hopper aligns with pump housing charging hole, and the size in aperture associates with the size of the accommodating cavity between impeller, ensures the accommodating cavity between impeller also can be made to fill covering slag when the fastest rotating speed.
Start filling in accommodating cavity when between an impeller before, first get rid of the air with certain overbottom pressure from pump housing steam vent, then start in the blanking of pump housing charging hole, while blanking, slag charge is filled the air that between impeller, accommodating cavity squeezes out and is also got rid of from steam vent, steam vent is provided with a vertical blast pipe and leads to the suitable for reading of slag adding machine hopper, steam vent can carry certain dust (the original ash of covering slag) secretly in the process of exhaust, these dust rely on after reaching constant weight have been got back to again in the accommodating cavity between impeller from gravity from steam vent, residual air then enters hopper inside from hopper is suitable for reading, accommodating cavity between the impeller filling covering slag takes covering slag to pump housing discharge opening by the rotation of variable-frequency motor, and the tremie pipe on lower connecting base enters in mixing tube, is transported in crystallizer together with feeding air, by the velocity of rotation of variable frequency reducer motor, control the rotating speed of impeller, thus reach increase or reduce the effect adding the quantity of slag.
Claims (9)
1. a vane type measuring pump, is characterized in that, comprises,
The pump housing, its central authorities offer a manhole, form a cavity structure in the pump housing, and charging hole, steam vent are offered along its length respectively in the pump housing top at cavity structure top; Discharge opening offered by the pump housing bottom cavity structure; Pump housing both end sides arranges outer end cap;
Impeller, be arranged in pump housing cavity structure, it established some blades, impeller both end sides establishes inner end cap, by some blades to coordinate with inner end cap along impeller circumference formed some can the accommodating cavity of accommodating slag charge;
Upper connecting base, is arranged at pump housing upper surface, and on upper connecting base, the corresponding pump housing is provided with charging hole and steam vent, and upper connecting base is also provided with the installation limited bayonet and fixing threaded hole that are connected with hopper;
Lower connecting base, is arranged at pump housing lower surface, and the corresponding pump housing discharge opening of lower connecting base offers material hole;
Tremie pipe, its one end is connected to lower connecting base material hole;
Mixing tube, it is established the connecting hole planted for the tremie pipe other end;
Variable-frequency motor and corresponding reductor, power transmission shaft, be arranged at outside the outer end cap of pump housing side, and the impeller that power transmission shaft is placed in the pump housing through outer end connects.
2. vane type measuring pump as claimed in claim 1, is characterized in that, the axis hole place that the outer end cap of described pump housing transmission side passes for power transmission shaft establishes bearing.
3. vane type measuring pump as claimed in claim 1, it is characterized in that, the outer face that described impeller is corresponding with pump housing inwall is inclined-plane.
4. the vane type measuring pump as described in claim 1 or 3, is characterized in that, described impeller outer end face inclined-plane is the inclined-plane of 10 ~ 20 degree.
5. the vane type measuring pump as described in claim 1 or 3, is characterized in that, described impeller adopts polytetrafluoroethylmaterial material.
6. vane type measuring pump as claimed in claim 4, is characterized in that, described impeller adopts polytetrafluoroethylmaterial material.
7. vane type measuring pump as claimed in claim 1 or 2, is characterized in that, establish mud hole and sealing bolt bottom the described pump housing between corresponding inner end cap and outer end cap.
8. vane type measuring pump as claimed in claim 1 or 2, is characterized in that, described pump housing steam vent be provided with one lead to slag adding machine hopper blast pipe.
9. vane type measuring pump as claimed in claim 7, is characterized in that, described pump housing steam vent be provided with one lead to slag adding machine hopper blast pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310323487.2A CN103394661B (en) | 2013-07-29 | 2013-07-29 | A kind of vane type measuring pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310323487.2A CN103394661B (en) | 2013-07-29 | 2013-07-29 | A kind of vane type measuring pump |
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| Publication Number | Publication Date |
|---|---|
| CN103394661A CN103394661A (en) | 2013-11-20 |
| CN103394661B true CN103394661B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310323487.2A Active CN103394661B (en) | 2013-07-29 | 2013-07-29 | A kind of vane type measuring pump |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB528011A (en) * | 1939-04-26 | 1940-10-21 | Robert Talbot Knapp | Adjustable displacement meter or pump |
| CN86201315U (en) * | 1986-03-09 | 1986-12-17 | 温州船用挂机厂 | Pneumatically (or hydraulically) driven plunger type metering pump |
| RU2041811C1 (en) * | 1992-02-28 | 1995-08-20 | Всероссийский научно-исследовательский институт деревообрабатывающей промышленности | Device for the chemical processing in the manufacture of wood boards |
| CN2646413Y (en) * | 2003-07-17 | 2004-10-06 | 边东福 | Accurate trace quantity metering pump |
| CN101709693A (en) * | 2009-12-02 | 2010-05-19 | 公安部第一研究所 | Precision plunger metering pump |
| CN201761658U (en) * | 2010-05-21 | 2011-03-16 | 北京中盛华旭电子科技有限公司 | Solid particle metering pump |
| CN202181082U (en) * | 2011-07-29 | 2012-04-04 | 杭州力翔能源科技有限公司 | Magnetic-type solid powder metering pump |
| CN202833987U (en) * | 2012-08-25 | 2013-03-27 | 新凤鸣集团股份有限公司 | Metering pump gear case oil-gas discharging device |
| CN103216441A (en) * | 2013-04-12 | 2013-07-24 | 浙江精诚模具机械有限公司 | Gear metering pump |
-
2013
- 2013-07-29 CN CN201310323487.2A patent/CN103394661B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB528011A (en) * | 1939-04-26 | 1940-10-21 | Robert Talbot Knapp | Adjustable displacement meter or pump |
| CN86201315U (en) * | 1986-03-09 | 1986-12-17 | 温州船用挂机厂 | Pneumatically (or hydraulically) driven plunger type metering pump |
| RU2041811C1 (en) * | 1992-02-28 | 1995-08-20 | Всероссийский научно-исследовательский институт деревообрабатывающей промышленности | Device for the chemical processing in the manufacture of wood boards |
| CN2646413Y (en) * | 2003-07-17 | 2004-10-06 | 边东福 | Accurate trace quantity metering pump |
| CN101709693A (en) * | 2009-12-02 | 2010-05-19 | 公安部第一研究所 | Precision plunger metering pump |
| CN201761658U (en) * | 2010-05-21 | 2011-03-16 | 北京中盛华旭电子科技有限公司 | Solid particle metering pump |
| CN202181082U (en) * | 2011-07-29 | 2012-04-04 | 杭州力翔能源科技有限公司 | Magnetic-type solid powder metering pump |
| CN202833987U (en) * | 2012-08-25 | 2013-03-27 | 新凤鸣集团股份有限公司 | Metering pump gear case oil-gas discharging device |
| CN103216441A (en) * | 2013-04-12 | 2013-07-24 | 浙江精诚模具机械有限公司 | Gear metering pump |
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| Publication number | Publication date |
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| CN103394661A (en) | 2013-11-20 |
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