CN103407788A - Constant-volume accurate-measuring feeder and pneumatic blowing device - Google Patents
Constant-volume accurate-measuring feeder and pneumatic blowing device Download PDFInfo
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- CN103407788A CN103407788A CN2013103468470A CN201310346847A CN103407788A CN 103407788 A CN103407788 A CN 103407788A CN 2013103468470 A CN2013103468470 A CN 2013103468470A CN 201310346847 A CN201310346847 A CN 201310346847A CN 103407788 A CN103407788 A CN 103407788A
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Abstract
The invention provides a constant-volume accurate-measuring feeder and a pneumatic blowing device. The constant-volume accurate-measuring feeder comprises a feeder case (805), an impeller (810) is disposed in the feeder case (805), blades (815) of the impeller (810) can divide the inside of the feeder case (805) into a plurality of cavities (814), a drive shaft (807) is sleeved in the impeller (810), a conveying air port (813) communicated with the plurality of cavities (814) is arranged on the side wall of the feeder case (805), a feed inlet (811) is arranged on the upper portion of the feeder case (805), and a blanking cavity (812) is formed in the lower portion of the feeder case (805). Compared with traditional material conveying modes, the pneumatic blowing device comprising the constant-volume accurate-measuring feeder has the advantages of being high in material conveying accuracy, stable in material conveying process, capable of adapting material conveying in high and lower pressure states and the like.
Description
Technical field
The present invention relates to the material transfer equipment technical field, particularly a kind of constant volume type accurate measurement feeder, or a kind of pneumatic blowing device.
Background technology
At present, air-transport system is widely used in the bulk granular shape material of the industries such as iron and steel, coloured, electric power, chemical industry or the conveying of granular material.Now the fluid bed of the reliable splendid attire material container of mass transport form bottom, by after goods fluid, utilizes the gas under certain pressure that mass transport is gone out, and the shortcoming of this form is that delivery precision is low, and instantaneous precision generally only has ± and 10%; In material conveying process, be subjected to the gas pressure change relief volume large; Material in course of conveying, carry start and latter stage operational throughput less than normal.It is exactly to rely on splendid attire material container bottom star-like feed valve is installed that the mass transport form also has a kind of, and the wind-force formed by starting blower fan, go out the mass transport that star-like feed valve takes out, and the shortcoming of this form is: the mass transport distance is short; Be only suitable in the low pressure mass transport; Convey materials amount control accuracy is low; Mass transport is subjected to ectocine large.
Summary of the invention
For the technical matters that the precision that solves existing material transfer equipment is low, easily be subjected to ectocine, the invention provides a kind of constant volume type accurate measurement feeder and pneumatic blowing device.The pneumatic blowing device that contains this constant volume type accurate measurement feeder is compared with traditional mass transport form, have that the mass transport precision is high, material conveying process steadily, can be applicable to the advantages such as mass transport under the high and low pressure state.
The present invention for the technical scheme that solves its technical matters employing is: a kind of constant volume type accurate measurement feeder, comprise the feeder housing, in the feeder housing, be provided with impeller, the blade of impeller can will be divided into a plurality of cavitys in the feeder housing, in impeller, be socketed with axle drive shaft, an end of axle drive shaft is connected with actuating device, and the sidewall of feeder housing is provided with the conveying wind interface be communicated with cavity, the top of feeder housing is provided with inlet point, and the bottom of feeder housing is provided with the blanking chamber.
Impeller is fixedly connected with axle drive shaft, and the top of feeder housing is along circumferentially being evenly distributed with a plurality of inlet points, and the position of inlet point is fixed with respect to the feeder housing, and the bottom of feeder housing is along circumferentially being evenly distributed with a plurality of blankings chamber.
The plane at blade place to the distance of the axis of axle drive shaft, be the impeller cylinder external diameter 5%～50%.
Inlet point contains first arc-shaped side adjacent with axle drive shaft, second arc-shaped side adjacent with the sidewall of feeder housing, be connected the first straight flange of the first arc-shaped side one end and the second arc-shaped side one end, be connected the second straight flange of the first arc-shaped side other end and the second arc-shaped side other end, the first straight flange to the distance of the axis of axle drive shaft, be the impeller cylinder external diameter the 5%～50%, second straight flange to the axis of axle drive shaft apart from be the impeller cylinder external diameter 5%～50%.
The area of inlet point is more than or equal to two adjacent interlobate cross-sectional areas in the feeder housing, and the area of upper end, blanking chamber is less than or equal to two adjacent interlobate cross-sectional areas in the feeder housing.
The upper end in blanking chamber contains the three-arc-side adjacent with axle drive shaft, the four-arc edge adjacent with the sidewall of feeder housing, be connected the 3rd straight flange of three-arc-side one end and four-arc edge one end, be connected the 4th straight flange of the three-arc-side other end and the four-arc edge other end, lower end, blanking chamber be shaped as circle.
Carry the wind interface to be connected with and carry wind to take over, carry axis that wind takes over to the axis of axle drive shaft apart from be the impeller cylinder external diameter 5%～50%.
The upper end of impeller is provided with entry table, and entry table is fixedly connected with axle drive shaft, and inlet point is arranged on entry table, and impeller is fixed with respect to the feeder housing.
Between the lower end of impeller and blanking chamber, be provided with blanking tray, blanking tray is fixedly connected with axle drive shaft, and blanking tray is provided with a plurality of blanking ports that are communicated with cavity and blanking chamber.
A kind of pneumatic blowing device, described pneumatic blowing device contain above-mentioned constant volume type accurate measurement feeder, and the top of this constant volume type accurate measurement feeder is provided with the winding-up tank, carry the wind interface to be connected with and carry wind to take over, and the blanking chamber is connected with blanking and takes over.
The invention has the beneficial effects as follows:
1, the mass transport precision is high, and instantaneous precision can reach ± and 0.5%;
2, material conveying process is steady, and material, in the process of carrying, is disturbed by external factor little, if be not subject to, carries gas pressure change, in the splendid attire material container, store material the number etc. factor and have influence on operational throughput.
3, can be applicable to the mass transport under the high and low pressure state, this Novel pneumatic blowing device not only can, to convey materials in non-pressure vessel, also can be stablized convey materials to the high pressure vessel with certain pressure.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, constant volume type accurate measurement feeder of the present invention and pneumatic blowing device are described in further detail.
Fig. 1 is the front view of the constant volume type accurate measurement feeder described in embodiment 1.
Fig. 2 is the cutaway view of A-A direction in Fig. 1.
Fig. 3 is the cutaway view of B-B direction in Fig. 1.
Fig. 4 is the front view of the constant volume type accurate measurement feeder described in embodiment 2.
Fig. 5 is the birds-eye view of the constant volume type accurate measurement feeder described in embodiment 2.
Fig. 6 is the front view of the entry table described in embodiment 2.
Fig. 7 is the front view of the blanking tray described in embodiment 2.
Fig. 8 is the integral structure schematic diagram of pneumatic blowing device.
1. material bins wherein, 2. pneumatic baiting valve, 3. expansion joint, 4. the first material blanking tube, 5. dump tank, 6. the second material blanking tube, 7. winding-up tank, 8. constant volume type accurate measurement feeder, 9. frequency-conversion drive apparatus, 10. gas transmission pipeline, 11. material conveying pipe, 12. the 3rd tremie pipe, 13. conveying steam line, 14. winding-up tank fluidisation pipeline, 15. winding-up gas source pipe, 16. winding-up tank pressurising winding-up tank pipeline, 17. dump tank fluidisation pipeline, 18. dump tank pressurising pipeline, 19. material bin fluidisation pipeline, 20. hand valve, 21. pneumatic valve, 22. pressure-modulation valve, 23. metal is flexible coupling, 24. boiler check valve, 25. the first pressure-equalizing passageway, 26. diffuse channel, 27. the second pressure-equalizing passageway, 28. making-up air device,
801. mixer, 802. winding-up tank blanking port flange, 803. feeder feed opening flange, 804. carrying wind takes over, 805. feeder housing, 806. blanking is taken over, 807. axle drive shaft, 808. retarder, 809. variable-frequency motor, 810. impeller, 811. inlet point, 8111. the first arc-shaped side, 8112. the second arc-shaped side, 8113. the first straight flange, 8114. the second straight flange, 812. blanking chamber, 8121. three-arc-side, 8122. four-arc edge, 8123. the 3rd straight flange, 8124. the 4th straight flange, 813. carry the wind interface, 814. cavity, 815. blade, 816. impeller cylinder, 817. entry table, 818. blanking tray, 819. blanking port.
The specific embodiment
Embodiment 1
A kind of constant volume type accurate measurement feeder, comprise feeder housing 805, in feeder housing 805, be provided with impeller 810, the blade 815 of impeller 810 can will be divided into a plurality of cavitys 814 in feeder housing 805, in impeller 810, be socketed with axle drive shaft 807, one end of axle drive shaft 807 is connected with actuating device, the sidewall of feeder housing 805 is provided with the conveying wind interface 813 be communicated with cavity 814, the top of feeder housing 805 is provided with inlet point 811, the bottom of feeder housing 805 is provided with blanking chamber 812, as shown in Figure 1, Figure 2, Figure 3 shows.
In the present embodiment, impeller 810 is fixedly connected with axle drive shaft 807, the top of feeder housing 805 is along circumferentially being evenly distributed with a plurality of inlet points 811, and the position of inlet point 811 is fixing with respect to feeder housing 805, and the bottom of feeder housing 805 is along circumferentially being evenly distributed with a plurality of blankings chamber 812.In the present embodiment namely, axle drive shaft 807 can 810 rotations of impeller, and the position of inlet point 811 is motionless.Described constant volume type accurate measurement feeder 8 is connected with feeder feed opening flange 803 by winding-up tank blanking port flange 802 with winding-up tank 7.The material be stored in winding-up tank 7 can enter in the cavity 814 of feeder housing 805 by the inlet point 811 on feeder feed opening flange 803.Actuating device comprises variable-frequency motor 809 and retarder 808, and variable-frequency motor 809 can drive axle drive shaft 807 rotations by retarder 808.When axle drive shaft 807 rotation, impeller 810 and mixer 801 are all done corresponding rotation.
In Fig. 2, impeller 810 comprises impeller cylinder 816 and is arranged on the blade 815 on impeller cylinder 816, impeller 810 on described axle drive shaft 807 is provided with the blade 815 that some rotation directions arrange, blade 815 rotation direction settings are the axis of the plane at blade 815 places without axle drive shaft 807, and different and general blade is disposed radially.The plane at blade 815 places to the distance of the axis of axle drive shaft 807, be impeller cylinder 816 external diameter 5%～50%.This concrete distance and the quantity of blade 815 can be chosen according to actual conditions.The blade 815 of all rotation direction settings, by feeder housing 805, being divided into the even cavity of some sizes, in the present embodiment, contains three blades 815, and will in feeder housing 805, be divided into three cavitys 814.In addition, on described mixer 801, be provided with the stirring vane that two or three same axial are arranged.
The inlet point 811 that the rotation direction blade 815 of several and impeller 810 is complementary is set on described feeder feed opening flange 803, namely as shown in Figure 2, contain 3 inlet points 811, inlet point 811 contains first arc-shaped side 8111 adjacent with axle drive shaft 807, second arc-shaped side 8112 adjacent with the sidewall of feeder housing 805, the first straight flange 8113 that connects the first arc-shaped side 8,111 one ends and the second arc-shaped side 8,112 one ends, the second straight flange 8114 that connects first arc-shaped side 8111 other ends and second arc-shaped side 8112 other ends, be that above-mentioned four limits have surrounded inlet point 811, the first straight flange 8113 to the distance of the axis of axle drive shaft 807, be impeller cylinder 816 external diameter 5%～50%, the second straight flange 8114 to the distance of the axis of axle drive shaft 807, be impeller cylinder 816 external diameter 5%～50%, namely the first straight flange 8113 and the second straight flange 8114 also can not pass the axis of axle drive shaft 807.
The area of inlet point 811 is more than or equal to the cross-sectional area of 815, interior adjacent two blades of feeder housing 805, and the area of 812 upper ends, blanking chamber is less than or equal to the cross-sectional area of 815, interior adjacent two blades of feeder housing 805.The projection in the projection of inlet point 811 and blanking chamber 812 can not intersected.
Blanking chamber 812 is roughly tapered, the shape of 812De upper end, blanking chamber and the shape matching of inlet point 811 are similar, also become the rotation direction setting, as shown in Figure 3, the three-arc-side 8121 adjacent with axle drive shaft 807 contained in 812De upper end, blanking chamber, the four-arc edge 8122 adjacent with the sidewall of feeder housing 805, the 3rd straight flange 8123 that connects three-arc-side 8,121 one ends and four-arc edge 8,122 one ends, the 4th straight flange 8124 that connects three-arc-side 8121 other ends and four-arc edge 8122 other ends, the 3rd straight flange 8123 and the 4th straight flange 8124 can be through the axis of axle drive shaft 807, 812 lower ends, blanking chamber be shaped as circle.
Conveying wind interface 813 places of described feeder housing 805 sides are provided with several and carry wind to take over 804, below feeder housing 805, be provided with several corresponding blankings and take over 806, described conveying wind is taken over 804 and also for rotation direction, is arranged, namely carry the axis of the axis of wind adapter 804 without axle drive shaft 807, as shown in Figure 3.Carry wind interface 813 to be connected with and carry wind to take over 804, carry wind take over 804 axis to the distance of the axis of axle drive shaft 807, be impeller cylinder 816 external diameter 5%～50%, preferably carry wind to take over 804 axis and apart from the plane that equals blade 815 places, arrive the distance of the axis of axle drive shaft 807 to the axis of axle drive shaft 807.
Constant volume type accurate measurement feeder 8 in work, material in winding-up tank 7 is passing through the rotation direction blanking port 811 on feeder feed opening flange 803 smoothly under the rotation of mixer 801, material enters respectively in the cavity 814 formed between blade, when material is come blanking chamber 812 with wheel rotation, by carrying wind to take over winding-up gas 812 discharges from the blanking chamber rapidly by material in 804, enter blanking and take over 806;
By the volume of the cavity 814 that forms between accurate design blade, thereby can improve the precision of mass transport, instantaneous precision can reach ± and 0.5%.
Fig. 8 is shown in by the integral structure schematic diagram of this pneumatic blowing device.This pneumatic blowing device mainly comprises constant volume type accurate measurement feeder 8, dump tank 5, winding-up tank 7, by-pass valve control, the material conveying pipe that is flexible coupling, is correlated with and steam line etc.
For dump tank 5, winding-up tank 7 and material bin 1 cone section, all be respectively arranged with dump tank fluidisation pipeline 17, winding-up tank fluidisation pipeline 14, material bin fluidisation pipeline 19.Each fluidisation pipeline is divided into several fluidisation air intake branches in dump tank 5, winding-up tank 7 and material bin 1 cone section.
Constant volume type accurate measurement feeder 8 is arranged on the bottom of winding-up tank 7, its constant volume type accurate measurement feeder 8 can arrange several the 3rd tremie pipes 12, the 3rd tremie pipe 12 and blanking are taken over 806 and are connected, the corresponding gas transmission pipeline of each the 3rd tremie pipe 12 10, material conveying pipe 11 and the pressurising of the winding-up tank tank pipeline 16 of jetting.
Between dump tank 5, winding-up tank 7, second pressure-equalizing passageway 27 is set, between two pneumatic baiting valves 2 of the first material blanking tube 4, first pressure-equalizing passageway 25 is set.
A diffuse channel 26 and dump tank pressurising pipeline 18 are set at the top of dump tank 5, and diffuse channel 26 diffuses gas in tank at work for dump tank 5, and dump tank pressurising pipeline 18 is for being pressurized to required operation pressure in dump tank 5.
Constant volume type accurate measurement feeder 8 rotary actuations rely on frequency-conversion drive apparatus 9 to control, and guarantee accurately to control at work overall process mass transport amount.Equipment package can rely on the unattended operation of PLC control system, and the work operational process of this cover pneumatic blowing device is as follows:
After dump tank 5 internal pressures release by diffuse channel 26, can open two pneumatic baiting valves 2 on the first material blanking tube 4 of coupling link feed bin 1 and dump tank 5, can open simultaneously the valve on the first pressure-equalizing passageway 25 and open the associated conduit equipment such as pneumatic valve 21 on material bin 1 cone fragment position material bin 1 fluidisation pipeline 19, pressure-modulation valve 22, impel the material in material bin 1 under the effect of gravity, to drop into smoothly dump tank 5.At dump tank 5 by the LOAD CELLS of configuration or after level-sensing device reaches setting value, close the valve on the first material blanking tube 4, the first pressure-equalizing passageway 25 and diffuse channel 26, open dump tank pressurising pipeline 18 on dump tank 5 and the valve on dump tank fluidisation pipeline 17, realize respectively pressurization and rheomorphism to dump tank 5, until the pressure in dump tank 5 and winding-up tank 7 pressure equate.
In winding-up tank 7 LOAD CELLS of configuration send can feed supplement signal the time, open pneumatic baiting valve 2 on the second material blanking tube 6 and the pneumatic valve 21 on the second balance tube 27, until the materials in dump tank 5 all drop in winding-up tank 7.
Winding-up tank 7 is in continuous winding-up mode of operation always, can be arranged to corresponding several winding-up material conveying pipe 11 according to the quantity that the user is ordered.When winding-up tank 7 is put convey materials to the user, pneumatic valve on winding-up tank fluidisation pipeline 14 is in opening, and the pneumatic valve on the winding-up tank pressurising pipeline 16 corresponding with material conveying pipe 11, gas transmission pipeline 10, material conveying pipe 11, the 3rd tremie pipe 12 all is in opening.
Pressure-modulation valve 22 on winding-up gas source pipe 15 and conveying steam line 13 can, according to the operation pressure in the regulating working conditions injection system, guarantee stable, the safety of under operating mode, jetting.
On each the 3rd tremie pipe 12 pipeline, a making-up air device 28 is set all, the inlet end of making-up air device 28 is connected with gas transmission pipeline 10, utilize the gas in gas transmission pipeline 10 that the material in the 3rd tremie pipe 12 is delivered to user's point smoothly, as the A in Fig. 8, B, C.This pneumatic blowing device also contains that expansion joint 3, hand valve 20, metal are flexible coupling 23, boiler check valve 24.
This pneumatic blowing device course of conveying is steady, and material, in the process of carrying, is disturbed by external factor little, if be not subject to, carries gas pressure change, in the splendid attire material container, store material the number etc. factor and have influence on operational throughput.Can also be applicable to the mass transport under the high and low pressure state, this Novel pneumatic blowing device not only can, to convey materials in non-pressure vessel, also can be stablized convey materials to the high pressure vessel with certain pressure.
A kind of constant volume type accurate measurement feeder, comprise feeder housing 805, in feeder housing 805, be provided with impeller 810, the blade 815 of impeller 810 can will be divided into a plurality of cavitys 814 in feeder housing 805, in impeller 810, be socketed with axle drive shaft 807, one end of axle drive shaft 807 is connected with actuating device, the sidewall of feeder housing 805 is provided with the conveying wind interface 813 be communicated with cavity 814, the top of feeder housing 805 is provided with inlet point 811, the bottom of feeder housing 805 is provided with blanking chamber 812, as Fig. 4, Fig. 5.
The upper end of impeller 810 is provided with entry table 817, and entry table 817 is fixedly connected with axle drive shaft 807, and the diameter of entry table 817 is slightly less than the internal diameter with feeder housing 805, and inlet point 811 is arranged on entry table 817, and impeller 810 is fixing with respect to feeder housing 805.At first the difference of the present embodiment and embodiment 1 is: increased entry table 817, also can be understood as feeder feed opening flange 803 has been carried out to split type setting, axle drive shaft 807 can drive entry table 817 and rotate, thereby inlet point 811 also can be rotated, and inlet point 811 is motionless in embodiment 1.Second, the difference of the present embodiment and embodiment 1 is, in the present embodiment, impeller 810 can not rotate, as the internal diameter of impeller cylinder 816, be greater than the external diameter of axle drive shaft 807, impeller 810 is fixedly connected with feeder housing 805, in the present embodiment namely, impeller 810 is motionless, and inlet point 811 rotates with axle drive shaft 807, thereby material is entered in the cavity 814 between blade, the tank 7 blanking port section material Whole blankings of jetting like this are even.
A plurality of inlet points 811 circumferentially are uniformly distributed along entry table 817, and inlet point 811 is fan-shaped, as shown in Figure 5, in the present embodiment, contain 3 inlet points 811.The difference of the present embodiment and embodiment 1 also comprises: be provided with blanking tray 818 between the lower end of impeller 810 and blanking chamber 812, blanking tray 818 is fixedly connected with axle drive shaft 807, the diameter of blanking tray 818 is slightly less than the internal diameter with feeder housing 805, blanking tray 818 is provided with the blanking port 819 in a plurality of connection cavitys 814 and blanking chamber 812, as shown in Figure 6 and Figure 7.In the present embodiment namely, impeller 810 is motionless, and entry table 817, inlet point 811, blanking tray 818 and blanking port 819 all can rotate with axle drive shaft 807.
The number of the blanking port 819 on the number of the inlet point 811 on entry table 817 and blanking tray 818 is consistent, depression angle is observed, inlet point 811 does not have lap with blanking port 819, during by Fig. 6 and the placement of Fig. 7 stacked on top of one another, inlet point 811 is with blanking port 819 and do not have the part that intersects or overlap, and namely projection and the blanking port 819 of inlet point 811 on blanking tray 818 is separated.In addition, the large palpulus of the inlet point 811 on entry table 817 is more than or equal to by the cross-sectional area of the cavity 814 formed between adjacent two blades 815 on impeller.The large palpulus of the blanking port 819 on blanking tray 818 be less than or equal to and impeller on the cross-sectional area of the cavity 814 that forms between adjacent two blades 815.
In addition, on described mixer 801, be provided with the stirring vane that two or three same axial are arranged, this stirring vane arrangement form is consistent according to the sidewall curved surface form of winding-up tank 7.In the bottom of described constant volume type accurate measurement feeder 8, be divided into several evenly blanking chambeies 812 of size, each corresponding blanking in blanking chamber 812 takes over 806, and blade 815 numbers on impeller 810 are integral multiples of blanking chamber 812 numbers.
The above, be only specific embodiments of the invention, can not limit the scope that invention is implemented with it, thus the displacement of its equivalent assemblies, or, according to equivalent variations and modification that scope of patent protection of the present invention is done, all should still belong to the category that this patent is contained.
Claims (10)
1. constant volume type accurate measurement feeder, it is characterized in that, described constant volume type accurate measurement feeder comprises feeder housing (805), in feeder housing (805), be provided with impeller (810), the blade (815) of impeller (810) can will be divided into a plurality of cavitys (814) in feeder housing (805), in impeller (810), be socketed with axle drive shaft (807), one end of axle drive shaft (807) is connected with actuating device, the sidewall of feeder housing (805) is provided with the conveying wind interface (813) be communicated with cavity (814), the top of feeder housing (805) is provided with inlet point (811), the bottom of feeder housing (805) is provided with blanking chamber (812).
2. constant volume type accurate measurement feeder according to claim 1, it is characterized in that: impeller (810) is fixedly connected with axle drive shaft (807), the top of feeder housing (805) is along circumferentially being evenly distributed with a plurality of inlet points (811), the position of inlet point (811) is fixing with respect to feeder housing (805), and the bottom of feeder housing (805) is along circumferentially being evenly distributed with a plurality of blankings chamber (812).
3. constant volume type accurate measurement feeder according to claim 1 is characterized in that: the plane at blade (815) place is 5%～50% of the external diameter of impeller cylinder (816) to the distance of the axis of axle drive shaft (807).
4. constant volume type accurate measurement feeder according to claim 1, it is characterized in that: inlet point (811) contains first arc-shaped side (8111) adjacent with axle drive shaft (807), second arc-shaped side (8112) adjacent with the sidewall of feeder housing (805), the first straight flange (8113) that connects the first arc-shaped side (8111) one ends and the second arc-shaped side (8112) one ends, the second straight flange (8114) that connects the first arc-shaped side (8111) other end and the second arc-shaped side (8112) other end, the first straight flange (8113) to the distance of the axis of axle drive shaft (807), be impeller cylinder (816) external diameter 5%～50%, the second straight flange (8114) to the distance of the axis of axle drive shaft (807), be impeller cylinder (816) external diameter 5%～50%.
5. constant volume type accurate measurement feeder according to claim 1, it is characterized in that: the area of inlet point (811) is more than or equal to the cross-sectional area between two blades (815) adjacent in feeder housing (805), and the area of upper end, blanking chamber (812) is less than or equal to the cross-sectional area between two blades (815) adjacent in feeder housing (805).
6. constant volume type accurate measurement feeder according to claim 1, it is characterized in that: the upper end of blanking chamber (812) contains the three-arc-side (8121) adjacent with axle drive shaft (807), the four-arc edge (8122) adjacent with the sidewall of feeder housing (805), be connected the 3rd straight flange (8123) of three-arc-side (8121) one ends and four-arc edge (8122) one ends, be connected the 4th straight flange (8124) of three-arc-side (8121) other end and four-arc edge (8122) other end, lower end, blanking chamber (812) be shaped as circle.
7. constant volume type accurate measurement feeder according to claim 1, it is characterized in that: carry wind interface (813) to be connected with and carry wind to take over (804), carry axis that wind takes over (804) to the axis of axle drive shaft (807) apart from be impeller cylinder (816) external diameter 5%～50%.
8. constant volume type accurate measurement feeder according to claim 1, it is characterized in that: the upper end of impeller (810) is provided with entry table (817), entry table (817) is fixedly connected with axle drive shaft (807), it is upper that inlet point (811) is arranged on entry table (817), and impeller (810) is fixing with respect to feeder housing (805).
9. constant volume type accurate measurement feeder according to claim 1, it is characterized in that: be provided with blanking tray (818) between the lower end of impeller (810) and blanking chamber (812), blanking tray (818) is fixedly connected with axle drive shaft (807), and blanking tray (818) is provided with a plurality of blanking ports (819) that are communicated with cavity (814) and blanking chamber (812).
10. pneumatic blowing device, it is characterized in that, described pneumatic blowing device contains any one described constant volume type accurate measurement feeder in claim 1～9, the top of this constant volume type accurate measurement feeder is provided with winding-up tank (7), carry wind interface (813) to be connected with and carry wind to take over (804), blanking chamber (812) are connected with blanking and take over (806).
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| CN201310346847.0A CN103407788B (en) | 2013-08-09 | 2013-08-09 | A kind of constant volume type accurate measurement feeder and pneumatic blowing device |
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| CN1041329A (en) * | 1988-09-22 | 1990-04-18 | 林朝晖 | Metering feed valve |
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| CN2813102Y (en) * | 2005-08-30 | 2006-09-06 | 包头稀土研究院 | Airflow milling powder sorting device |
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