CN205449242U - Buggy ration measurement low discharge rotor balance - Google Patents
Buggy ration measurement low discharge rotor balance Download PDFInfo
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- CN205449242U CN205449242U CN201521074656.4U CN201521074656U CN205449242U CN 205449242 U CN205449242 U CN 205449242U CN 201521074656 U CN201521074656 U CN 201521074656U CN 205449242 U CN205449242 U CN 205449242U
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Abstract
The utility model relates to a buggy ration measurement low discharge rotor balance, include the support of weighing, the sensing device that weighs, the frame, feeding part, discharge part, built -in grid type rotor reaches and goes up, lower sealing plate's rotor housing, and the last air intake of establishing of lower sealing plate, upper seal plate correspond the lower sealing plate air intake and establish the closing plate discharge gate, discharge part connects gradually an ejection of compact expansion joint, discharging pipe and another ejection of compact expansion joint by ejection of compact mouth and constitutes, the characteristic is that ejection of compact mouth is a throat pipe fitting, and the circular bottom plate that has with the anastomotic import of closing plate discharge gate is opened to the bottom surface, and the top surface be and import along the round outlet of same radial setting, and pipe fitting wall between circular bottom plate and the round outlet supreme slick and sly convergent curved surface of serving as reasons down is being outer convex curved surface on one side of the rotor center, round outlet keeps away from rotor centre of a circle one side the import, and round outlet is 30 -80mm with the centre -to -centre spacing of import, and for the 40 -60% of import area, import length runs through circular bottom plate.
Description
This utility model relates generally to the industries such as cement, metallurgy, electric power, pottery and weighs for coal dust the device of quantitatively conveying, particularly relates to a kind of quantitative metering of coal fine low discharge rotor weigher.
Background technology
The coal dust used in the production process of the industries such as cement, metallurgy, electric power, pottery needs continuous and quantitative to add, and coal dust uses rotor weigher to carry out Weighing, is then fed in corresponding technical process.Rotor weigher mainly includes the weighing bracket with two hanger articulated elements, weighing sensing device with suspension hook, frame, feed pieces, outlet member, built-in grid type rotor and upper and lower sealing plate rotor case, driving means and control chamber, arranging air inlet, blower on lower seal plate, blower is connected to lower seal plate air inlet by volume damper；On described upper sealing panel, corresponding lower seal plate air inlet arranges sealing plate discharging opening；During work, under control system control, rotor is driven by driving means and rotates, coal dust adds feed zone grid by feed pipe parts from the charging aperture of the upper sealing panel on top, rotor one end, and weigh by weighing sensing device at Weighing Area, metering, when rotor goes to the grid of other end discharge zone, coal dust in grid leans on from the discharging opening of upper sealing panel and is upwards blown out by the Wind power propelling of lower seal plate air inlet, coal dust is sequentially added into continuously, blow out successively continuously, realize the conveying of continuous accumulation measuring fixed amount.But the range of weighing minimum gauge of this rotor weigher is at 0.5-15T/h, its preferable measures range is at 2-10T/h, but, development along with industry, the most often there is the demand for low discharge dynamic flow metering scale in the industries such as cement, electric power, metallurgy, pottery, and its traffic requirement is at 0-3T/h, and above-mentioned traditional rotor claims to there will be fluctuation abnormal conditions when the measures range of 0-3T/h, cause metering inaccurate, the drawbacks such as conveying is unstable.
Utility model content
Main purpose of the present utility model is to improve the structure of existing rotor scale for quantitative metering of coal fine for the problems referred to above, it is provided that a kind of quantitative metering of coal fine low discharge rotor weigher, it is achieved the exactly metering of the low discharge coal dust dynamic flow of 0-4T/h.
This utility model solves the concrete technical scheme that its technical problem used:
A kind of quantitative metering of coal fine low discharge rotor weigher, mainly include the weighing bracket with two hanger articulated elements, weighing sensing device with suspension hook, frame, feed pieces, outlet member, built-in grid type rotor and upper and lower sealing plate rotor case, driving means and control chamber, arrange air inlet, blower on lower seal plate, and blower is connected to lower seal plate air inlet by volume damper；On described upper sealing panel, corresponding lower seal plate air inlet arranges sealing plate discharging opening；Described outlet member is sequentially connected with a discharging expansion joint, discharge nozzle and another discharging expansion joint straight up and constitutes by the discharging gate being correspondingly arranged with sealing plate discharging opening on rotor case；It is characterized in that described discharging gate is a reducing pipe fitting, its bottom surface is the circular bottom plate having the import matched with sealing plate radially discharging opening, end face is the round exit being correspondingly arranged along same radial direction with described import, pipe wall between circular bottom plate and round exit is the roundest and the most smooth tapered curved surface, and is being convex outward near rotor center side；Described round exit is 30-80mm in the centre-to-centre spacing away from side, the rotor center of circle, round exit and import of import, and the area of round exit is the 40-60% of inlet-duct area, and inlet length runs through described circular bottom plate.
It is provided with air-flow in described import department and guides tongue.
Described rotor is slim spheroidal graphite cast-iron rotor, and its height is 100-140mm, and diameter is 900-1100mm.
Described discharging expansion joint inwall arranges wear-resistant sleeve.
Described wear-resistant sleeve is made up of the upper and lower wear-resistant sleeve installed continuously, and they are a diameter of 90～150mm years old.
The beneficial effects of the utility model are: adapt to, owing to this utility model have employed, the discharging gate having ad hoc structure that low discharge measures, and be configured with slim spheroidal graphite cast-iron rotor, small-bore upper and lower wear-resistant sleeve, it is achieved that the rectification to fluctuation.The flow-rate ratio inlet gas flow of working off one's feeling vent one's spleen of discharging gate is remarkably reinforced, it is ensured that sufficient gas flow, it is achieved that the most steadily feed；Use facts have proved, the low discharge rotor weigher using this utility model to provide can provide no pulse formula feeding, its rate of discharge is the most steady with the relation curve of the rotor anglec of rotation, eliminate fluctuation, when measuring dynamic coal dust, range ability reaches 0-4T/h, and optimal range ability is 0.2-3T/h, meets the industries such as cement, electric power, metallurgy, the pottery demand to low discharge dynamic flow metering scale.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model；
Fig. 2 is the enlarged drawing of outlet member in Fig. 1；
Fig. 3 is the structural representation of discharging gate；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the left view sectional view of Fig. 3；
Fig. 6 is the upward view of discharging gate and illustrates with the corresponding relation of rotor grid；
Fig. 7 is the plan structure schematic diagram of Fig. 1 rotor；
Fig. 8 is the plan structure schematic diagram of upper sealing panel；
Fig. 9 is discharging gate and upper sealing panel and the combinative structure schematic diagram of rotor；
Figure 10 is the plan structure schematic diagram of lower seal plate；
Figure 11 is the graph of a relation of original rotor weigher rate of discharge and the rotor anglec of rotation；
Figure 12 this utility model rotor weigher rate of discharge and the graph of a relation of the rotor anglec of rotation；
Figure 13 is the outlet/inlet changes in flow rate figure of this utility model discharging gate.
In figure: 1 weighing bracket, 2 outlet member, 21 discharging expansion joints, 22 discharge nozzles, 23 discharging gates, 23a adpting flange, 23b round exit, 23c circular bottom plate, 23d convex outward, 3 feed pieces, 4 hanger articulated elements, 5 control chambers, 6 upper sealing panels, 60a import, 60 upper sealing panel discharging openings, 61 outer discharging openings, the outer import of 61a, discharging opening in 62, import in 62a, discharging opening dividing plate inside and outside 63, 63a guides tongue, 7 rotors, 71 outer grid districts, 72 medium ring grid zones, 73 internal ring I grid zones, 74 internal ring II grid zones, 8 lower seal plates, 80 lower seal plate air inlets, 81 outer shroud arm air inlets, 82 medium ring arm air inlets, 83 internal ring arm air inlets；9 rotor cases, 10 frames, 11 driving means, 12 volume dampers, 13 air mains, 131 outer shroud arms, 132 medium ring arms, 133 internal ring arms, 14 air intake expansion joints, 15 weighing sensing devices, 16 charging expansion joints, 17 3 blowpipes.
Below in conjunction with drawings and Examples, this utility model is described in detail.
Detailed description of the invention
Fig. 1-10 illustrates a kind of quantitative metering of coal fine low discharge rotor weigher, mainly include the weighing bracket 1 with two hanger articulated elements 4, weighing sensing device 15 with suspension hook, frame 10, feed pieces 3, outlet member 2, built-in grid type rotor 7 and the rotor case 9 of upper and lower sealing plate 6,8, driving means 11 and control chamber 5, arrange air inlet, blower on lower seal plate 8, the air intake of blower is fixed on weighing bracket 1, and blower outlet air end is connected to lower seal plate air inlet by volume damper；In the present embodiment, blower is by two air intake expansion joints 14,13, three volume dampers 12 of air main and three arms, three blowpipes 17 that i.e. outer shroud arm 131, medium ring arm 132, internal ring arm 133 are constituted, air main 13 upper end connects two air intake expansion joints 14, lower ends and connects three arms by three volume dampers 12 respectively, three arms are connected to the outer shroud arm air inlet 81 of the air inlet 80 of described lower seal plate 8, medium ring arm air inlet 82 and internal ring arm air inlet 83 respectively.On upper sealing panel 6, the air inlet 80 of corresponding lower seal plate 8 is provided with sealing plate discharging opening 60, the outer discharging opening 61 i.e. separated by inside and outside discharging opening dividing plate 63 and interior discharging opening 62, the corresponding outer shroud arm air inlet 81 of outer discharging opening 61 and medium ring arm air inlet 82, the corresponding internal ring arm air inlet 83 of interior discharging opening 62.Described outlet member 2 is sequentially connected with a discharging expansion joint 21, discharge nozzle 22 and another discharging expansion joint 21 straight up and constitutes by the discharging gate 23 being correspondingly arranged with sealing plate discharging opening 60 on rotor case 9.
As it is shown in fig. 7, in the present embodiment, grid type rotor 7 is to be intersected to form 4 annular grid zones i.e. outer grid district 7-1, medium ring grid zone 7-2, internal ring I grid zone 7-3 and internal ring II grid zone 7-4 by 3 concentric annular barriers with several radial direction barriers.Grid sum in rotor=120, the size shape of grid in each annular grid zone is identical, and in this example, between each grid zone, the size shape of grid is different.The grid in the corresponding outer grid district 71 of the outer shroud arm air inlet 81 of lower seal plate air inlet 80, the grid of the corresponding medium ring grid zone 72 of medium ring arm air inlet 82, corresponding internal ring I grid zone 73 of internal ring arm air inlet 83 and the grid of internal ring II grid zone 74.
Above-mentioned rotor case 9, driving means 11, three blowpipes 17 are distributed support and are arranged on weighing bracket 1, and are suspended on weighing sensing device 15 by suspension hook, and the air main 13 of three blowpipes 17 is fixed on weighing bracket 1 side by air intake expansion joint 14.The charging aperture of the air main 13 air inlet i.e. center of air intake expansion joint 14, the discharging opening i.e. center of discharging expansion joint 2-1 of outlet member 2 and feed pieces 3 i.e. feeds the center of expansion joint 16 and is located along the same line with two hanger articulated elements 4, and this straight line is the weighing axle formed by two hanger articulated elements 4 on weighing bracket 1.
Of the present utility model it is characterised by that described discharging gate 23 is a reducing pipe fitting, its bottom surface is to have circular bottom plate 23c of the import 60a that radially discharging opening 60 matches with upper sealing panel, end face is the round exit 23b being correspondingly arranged along same radial direction with described import 60a, pipe wall between circular bottom plate 23c and round exit 23b is the roundest and the most smooth tapered curved surface, and is being convex outward 23d near rotor center side；Described round exit 23b is 30-80mm in centre-to-centre spacing d away from side, the rotor center of circle, round exit 23b and import 60a of import 60a, sees Fig. 9, in the present embodiment, have employed optimum 50mm.The area of round exit 23b is the 40-60% of import 60a area, and in the present embodiment, import 60a area is 242mm2, the area of round exit 23b have employed optimum, i.e. the 50% of import 60a area, round exit a diameter of φ 125mm；The a length of 340mm of import 60a runs through described circular bottom plate.It is provided with adpting flange 23a at round exit end face.The height of discharging gate 23 is 250-300mm, have employed optimum 275mm in this example.
Being provided with air-flow at described import 60a and guide tongue 63a, air-flow guides tongue and is arranged on the import 60a position corresponding with discharging opening dividing plate 63 inside and outside upper sealing panel, and import 60a is divided into interior import 62a and outer import 61a.
Described rotor is slim spheroidal graphite cast-iron rotor, and its height is 100-140mm, and diameter is 900-1100mm.In the present embodiment, its height is 125mm, and diameter is 1000mm.
Described discharging expansion joint inwall arranges wear-resistant sleeve, to adapt to the impact friction in pneumatic feeding, increases the service life.Wear-resistant sleeve is made up of upper and lower wear-resistant sleeve 21a, the 21b installed continuously, and the lower end of upper wear-resistant sleeve 21a is provided with slightly mouth.Can promote that air-flow is unobstructed, reduce impact friction further.Adapting to the feature that low discharge weighs, wear-resistant sleeve a diameter of 90～150mm, in the present embodiment, upper and lower wear-resistant sleeve diameter is 125mm.
Operation principle and process:
nullIn conjunction with Fig. 1-Figure 10,Coal dust is i.e. fed by the charging aperture of feed pieces 3 grid expanding knot 16 inflow rotor 7 from feed bin under gravity,Rotor is in rotary course,Carry material and weigh entrance discharge region discharging through weighing sensing device 15,The wind that blower fan the provides air inlet i.e. air intake expansion joint 14 by air main 13、Through outer shroud arm 131 under volume damper 12 controls、Medium ring arm 132、Internal ring arm 133 is transported to the outer grid district 71 of correspondence respectively by lower seal plate air inlet、Medium ring grid zone 72、In the grid of internal ring I grid zone 73 and internal ring II grid zone 74,Air is evenly distributed in each grid,To guarantee that coal dust purges out from each grid completely,Coal powder injection pipeline is entered through the output of outlet member 2 to discharging opening i.e. discharging expansion joint 21 from discharging gate 2-3.As seen from Figure 11, the change of original rotor weigher rate of discharge and the rotor anglec of rotation is under low discharge state, there is significantly fluctuation, the discharging gate having ad hoc structure that low discharge measures is adapted to owing to this utility model have employed, and it is configured with slim spheroidal graphite cast-iron rotor, the small-bore upper and lower wear-resistant sleeve of a diameter of 90～150mm, it is achieved thereby that the rectification to fluctuation, use low discharge rotor weigher rate of discharge of the present utility model the most steady with the relation curve of the rotor anglec of rotation as shown in figure 12, eliminate fluctuation, and, as can be seen from Figure 13, the flow-rate ratio inlet gas flow of working off one's feeling vent one's spleen of discharging gate of the present utility model is remarkably reinforced, ensure sufficient gas flow, achieve the most steadily feed.When measuring dynamic coal dust, range ability reaches 0-4T/h, and optimal range ability is 0.2-3T/h.
The above, be only preferred embodiment of the present utility model, and structure of the present utility model is not made any pro forma restriction.Every any simple modification, equivalent variations and modification made above example according to technical spirit of the present utility model, all still falls within the range of technical solutions of the utility model.
Claims (7)
1. a quantitative metering of coal fine low discharge rotor weigher, mainly include the weighing bracket with two hanger articulated elements, weighing sensing device with suspension hook, frame, feed pieces, outlet member, built-in grid type rotor and upper and lower sealing plate rotor case, driving means and control chamber, arrange air inlet, blower on lower seal plate, and blower is connected to lower seal plate air inlet by volume damper；On described upper sealing panel, corresponding lower seal plate air inlet arranges sealing plate discharging opening；Described outlet member is sequentially connected with a discharging expansion joint, discharge nozzle and another discharging expansion joint straight up and constitutes by the discharging gate being correspondingly arranged with sealing plate discharging opening on rotor case；It is characterized in that described discharging gate is a reducing pipe fitting, its bottom surface is the circular bottom plate having the import matched with sealing plate radially discharging opening, end face is the round exit being correspondingly arranged along same radial direction with described import, pipe wall between circular bottom plate and round exit is the roundest and the most smooth tapered curved surface, and is being convex outward near rotor center side；Described round exit is 30-80mm in the centre-to-centre spacing away from side, the rotor center of circle, round exit and import of import, and the area of round exit is the 40-60% of inlet-duct area, and inlet length runs through described circular bottom plate.
A kind of quantitative metering of coal fine low discharge rotor weigher the most according to claim 1, it is characterised in that be provided with air-flow in described import department and guide tongue.
A kind of quantitative metering of coal fine low discharge rotor weigher the most according to claim 1 and 2, it is characterised in that described rotor is slim spheroidal graphite cast-iron rotor, and its height is 100-140mm, and diameter is 900-1100mm.
A kind of quantitative metering of coal fine low discharge rotor weigher the most according to claim 3, it is characterised in that wear-resistant sleeve is set on described discharging expansion joint inwall.
A kind of quantitative metering of coal fine low discharge rotor weigher the most according to claim 4, it is characterised in that described wear-resistant sleeve is made up of the upper and lower wear-resistant sleeve installed continuously, and they are a diameter of 90～150mm years old.
A kind of quantitative metering of coal fine low discharge rotor weigher the most according to claim 1 and 2, it is characterised in that wear-resistant sleeve is set on described discharging expansion joint inwall.
A kind of quantitative metering of coal fine low discharge rotor weigher the most according to claim 6, it is characterised in that described wear-resistant sleeve is made up of the upper and lower wear-resistant sleeve installed continuously, and they are a diameter of 90～150mm years old.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521074656.4U CN205449242U (en) | 2015-12-22 | 2015-12-22 | Buggy ration measurement low discharge rotor balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521074656.4U CN205449242U (en) | 2015-12-22 | 2015-12-22 | Buggy ration measurement low discharge rotor balance |
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| Publication Number | Publication Date |
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| CN205449242U true CN205449242U (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521074656.4U Active CN205449242U (en) | 2015-12-22 | 2015-12-22 | Buggy ration measurement low discharge rotor balance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063415A (en) * | 2017-06-12 | 2017-08-18 | 合肥固泰自动化有限公司 | A kind of quantitative coal feeding system of lattice rotor |
| CN112513590A (en) * | 2018-06-18 | 2021-03-16 | Fl史密斯公司 | Device for continuous gravimetric metering of pourable material |
-
2015
- 2015-12-22 CN CN201521074656.4U patent/CN205449242U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063415A (en) * | 2017-06-12 | 2017-08-18 | 合肥固泰自动化有限公司 | A kind of quantitative coal feeding system of lattice rotor |
| CN112513590A (en) * | 2018-06-18 | 2021-03-16 | Fl史密斯公司 | Device for continuous gravimetric metering of pourable material |
| CN112513590B (en) * | 2018-06-18 | 2023-06-06 | Fl史密斯公司 | Device for continuous weight metering of pourable materials |
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