CN2349180Y

CN2349180Y - Impeller material feeder

Info

Publication number: CN2349180Y
Application number: CN 98215852
Authority: CN
Inventors: 胡志强; 胡尔廉; 胡健美
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-03-21
Filing date: 1997-03-21
Publication date: 1999-11-17
Anticipated expiration: 2007-03-21

Abstract

The utility model relates to a material feeder with an impeller which is used for metering and feeding material, particularly the discharging device of a dry dust removal system. The utility model comprises a transmission mechanism, a housing 1 with a feed port 2 and a discharge port 7, end caps 14 on both sides of the housing 1, and an impeller 9 which is installed in the housing 1 and is supported by the end caps 14. The feed port 2 is in stagger arrangement with the impeller. The impeller 9 is tightly engaged with the feeding cavity 13 of the housing in radial direction, but is separated from the discharge cavity 10 of the housing; the gap between the impeller 9 and the discharge cavity 10 is relatively large. A driving device comprises a multi-stage speed changing motor and a stepped pulley; the driving device can change the rotation speed of the impeller. The utility model has the advantages of simple structure, reliable sealing and energy saving.

Description

Revolving plow reclaimer

The utility model relates to a kind of revolving plow reclaimer that feed is used that measures, and particularly relates to a kind of device for discharging of dry dust removal system.

The device for discharging of dust exhaustor is a kind of very important equipment, and its operating mode directly has influence on the arresting efficiency of dust pelletizing system.Existing revolving plow reclaimer material does not on the one hand make full use of by the potential energy that revolving plow reclaimer is discharged into lower from eminence, on the other hand through using after a while, because the wearing and tearing of housing and impeller increase the material that leaks out.According to investigations, the inleakage maximum can reach 50%, and leaks material when serious, and it is inaccurate to be not only metering, even dust can uncontrolledly constantly spill by the gap between impeller and the housing voluntarily.In addition, because the cohesiveness of dust, bonded assembly dust increases running resistance in the gap between housing and the impeller, energy consumption increases, the dust that bleeds between impeller end plate and the housing end plug by the gap of impeller and housing also makes running resistance increase, when serious, be full of dust between impeller end plate and the housing end plug and make motor see commentaries on classics.In addition, it has been generally acknowledged that revolving plow reclaimer is not suitable for the big occasion of feeding coal, the maximum feeding coal of in fact existing revolving plow reclaimer seldom has the 100m of reaching ²/ h's.

The purpose of this utility model provides a kind of energy-conservation and reliable sealing revolving plow reclaimer.

The purpose of this utility model is achieved in that and comprises transmission device in the structure, have inlet point 2 and discharging opening 7 housing 1, be contained in housing 1 end covers at two sides 14, be contained in the impeller 9 that supports by end cap 14 in the housing 1, its impeller (9) is setovered with the inlet point (2) of housing, and the direction of biasing is identical with the hand of rotation of impeller.Impeller anticlockwise motion for example, then inlet point is setovered to anticlockwise direction, can utilize material in the feed bin that the static pressure of impeller and material are moved to the potential energy of lower from eminence, is an actv. conservation measures.Existing revolving plow reclaimer also has the impeller biasing, the disclosed a kind of feed inlet and outlet of (strength carry Shanghai science tech publishing house in February, 1984 the first edition) and the Chinese utility model specification sheets CN2193351 revolving plow reclaimer of setovering for example, its objective is and prevent the impeller jam, the direction of inlet point biasing is opposite with the utility model, because it is opposite that the static pressure of the direction of impeller rotation and inlet point biasing back material and the potential energy of material promote the trend of impeller rotation, therefore when reaching the purpose that prevents the impeller jam, the cost of paying is to increase energy consumption.

Two feed cavity and two impellers 9 are set in housing 1, an inlet point 2 is located at the centre of two impellers 9, impeller 9 is setovered naturally with inlet point 2, and can when increasing inlet point, keep bigger Offset, can utilize the static pressure and the potential energy of material better, both can be energy-conservation, under again can the be identical condition at the height of impeller diameter and revolving plow reclaimer, productive capacity can double, and the big more energy-saving effect of feeding coal is remarkable more, and has overcome revolving plow reclaimer to the feed quantitative limitation.

Energy-conservation another kind of mode be impeller 9 with housing feed cavity 13 radially identical closely, and impeller 9 separates with housing discharging chamber 10, its gap is big as far as possible, makes discharging unobstructed, avoids between impeller 9 and housing 1 or dust stratification in the gap between impeller 9 and the end cap 14.Because impeller 9 is over half with the contact surface minimizing of housing 1, the friction drag when making impeller 9 rotations reduces.

The radius of housing feed cavity 13 is r, and the radius in housing discharging chamber 10 is R, both decentraction, and r equals the radius of impeller 9 cylindricals, and R 〉=r.

Make impeller 9 and 13 sealings of housing feed cavity, the another kind of mode of separating with housing discharging chamber 10 is a dress circular arc liner plate 15 between impeller 9 and housing feed cavity 13, the interior circular arc of liner plate and the cylindrical of impeller 9 coincide, and are equipped with on the housing 1 to keep liner plate 15 and impeller 9 leak free clearance adjustment mechanisms.

The circular arc liner plate is the liner plate 29 of half cone-shaped, both can reduce the contact surface resistance of reducing friction, again can the saving in material expendable weight, and the material of liner plate can be selected according to the character of material.

For the sealing that keeps liner plate and impeller 9 can be installed clearance adjustment mechanism.The clearance adjustment mechanism of liner plate and impeller is the spring perch 21 that is contained on the housing 1, and the gland 19 that is screwed on the spring perch 21 compresses the spring 20 that is placed in the spring perch 21, and spring 20 is pressed on the liner plate 15.

The clearance adjustment mechanism of another kind of liner plate and impeller is to be contained on the housing 1 or the set screw 17 that is contained on the gland 19 withstands on the circular arc liner plate 15, and locking with jam nut 18.Above-mentioned two kinds of clearance adjustment mechanisms can be only with a kind of, and both use simultaneously is reliable, and screw is used to limit the action radius of liner plate, and spring is used for making when wear liner liner plate still can abut against impeller.Gland 19 is used for the thrust of regulating spring 20.

The simplest clearance adjustment mechanism is the plastic elastomeric 16 that is contained between housing 1 and the circular arc liner plate 15, and for example polyurethane elastomer abuts against on the impeller liner plate.

Transmission device of the present utility model can adopt the various transmission devices that use on the existing revolving plow reclaimer, but the productive capacity that existing transmission device will change revolving plow reclaimer is very difficult.Adopting buncher, its advantage is can infinite speed variation, but its complex structure cost height, and most situation does not need infinite speed variation.Therefore adopt following transmission device, comprise the bearing seat 3 that is contained on the end cap 14, pivot shaft 23 is welded on the bearing seat 3, motor machine bottom board 24 kinks are on pivot shaft 23, can swing around pivot shaft 23, electrical motor 25 is fixed by bolts on the motor bedplate 24, eyelet bolt 28 is contained in another root bead on the pivot shaft on the bearing seat 3, electrical motor 25 drives the retarder 5 that is contained on the bearing seat 3 by pulley conical disk 26, cone belt 27, pulley conical disk 6, and retarder 5 is by 9 rotations of coupler 4 drives impeller.Pulley conical disk 26 and 6 can be a step cone, can change wheel speed by mobile cone belt, and electrical motor 25 can be multipole change speed motor, changes motor pole number and can change wheel speed.Can also change wheel speed by changing belt pulley.Though be step change, be easy to realize any rotating speed of customer requirements.Eyelet bolt 28 is used for adjusting the tensioning degree of cone belt.

The embodiment that provides below in conjunction with accompanying drawing and accompanying drawing is further described the utility model.

Accompanying drawing 1 is that the A-A section-drawing of the utility model embodiment 1 and B are to view.

Accompanying drawing 2 is cutaway views of the utility model embodiment 1.

Accompanying drawing 3 is the utility model housing feed cavity and discharging chamber scheme drawing.

Accompanying drawing 4 is cutaway views of the utility model embodiment 2.

Accompanying drawing 5 is A-A section-drawings of the utility model embodiment 3.

Fig. 1 be the A-A section-drawing of embodiment 1 and B to view, inlet point 2 is anticlockwise direction biasings, impeller 9 is anticlockwise motions.Pivot shaft 23 is welded on the bearing seat 3, obviously pivot shaft 23 also can directly be contained on the end plate 14, or be contained on the housing 1, motor bedplate 24 kinks are on pivot shaft 23, can swing around pivot shaft 23, electrical motor 25 is fixed by bolts on the motor bedplate 24, eyelet bolt 28 is contained in another root bead is used for adjusting cone belt 27 on the pivot shaft on the bearing seat 3 tensioning degree, electrical motor 25 is by pulley conical disk 26, and cone belt 27, pulley conical disk 6 drive the retarder that is contained on the bearing seat 3.The plastic elastomeric 15 that in this figure, drawn simultaneously, set screw 17 and spring 20, in fact these three kinds of clearance adjustment mechanisms can be used separately, also can combination in any get up to use.When temperature of charge is low, recommend to use plastic elastomeric or plastic elastomeric to add set screw.When temperature of charge is higher, recommend to add set screw, when seal request is arranged, between housing 1 and circular arc liner plate 15, also sealing member should be arranged with spring or spring.The simplest control apparatus is only use set screw, and can all remove spring perch and spring this moment, and the individual nut of processing screw hole or weldering refills the adjusted screw and gets final product on housing 1.

As shown in Figure 2, inlet point 2 and discharging opening 7 are arranged on the housing 1, feed cavity 13 at housing 1 is equipped with circular arc liner plate 15 and plastic elastomeric 16, plastic elastomeric 16 abuts against on the impeller 9 circular arc liner plate 15, impeller 9 is by bearing 11 supportings, two bearings 11 are contained in respectively on bearing seat 12 and 3, end plate 14 is equipped with at housing 1 two ends, use packing seal between end plate and the paddle shaft, bearing seat 12 and 3 also is contained on the end plate, obviously bearing seat and end plate also can be made one, and be the same with existing revolving plow reclaimer, and bearing is contained on the end plate, retarder 5 usefulness flanges are contained on the bearing seat 3, one end of retarder 5 connects with impeller 9 by coupler 4, and the other end is equipped with belt pulley 6, and belt pulley 6 can be a step cone, present embodiment is the secondary step cone, mobile cone belt can change the rotating speed of impeller 9, if electrical motor adopts double-speed motor, then impeller has the fourth gear rotating speed.

Fig. 3 is that radius is the housing feed cavity of r and the scheme drawing in the housing discharging chamber that radius is R, and this mode is that the revolving plow reclaimer to present use carries out improved simple effective method.

Fig. 4 is the cutaway view of the utility model embodiment 2.The circular arc liner plate is the liner plate 29 of half cone-shaped as different from Example 1, adjusts the position of half cone-shaped liner plates 29 with being contained in set screw 30 on the end plate of both sides and jam nut 31, makes the gap between impeller 9 and the liner plate 29 often remain on optimum value.Also can adopt spring shown in Figure 1 the set screw of representing in figure, only need be contained in spring perch 21 on the end cap and get final product.

Fig. 5 is the A-A section-drawing of embodiment 4, is the most preferred embodiment of the revolving plow reclaimer of big feeding coal.In housing 1, be provided with two feed cavity 13, impeller 9 is housed respectively, inlet point 2 is located at the centre of two impellers 9, inlet point 2 must be setovered with impeller 9, and make Offset reach higher value, material distributing cone 32 makes powder can not stop up to two side flow are evenly unobstructed, two discharging chambeies 10 are communicated with discharging opening 7, one of them impeller is the active impeller, another impeller is passive impeller, initiatively the transmission of impeller is identical with the single impeller feeder, and initiatively impeller is by the identical intermeshed gear of a pair of number of teeth with transmission between the passive impeller.

The utility model can be widely used in the discharging of industries such as electric power, metallurgy, building materials, chemical industry and the ash discharging gear of various dust pelletizing systems.

Claims

1, a kind of revolving plow reclaimer, comprise transmission device in the structure, have inlet point (2) and discharging opening (7) housing (1), be contained in housing (1) end covers at two sides (14), be contained in the impeller (9) that supports by end cap (14) in the housing (1), the inlet point (2) that it is characterized in that impeller (9) and housing is setovered, and the direction of biasing is identical with the hand of rotation of impeller.

2, revolving plow reclaimer according to claim 1, it is characterized in that housing has two feed cavity and two impellers (9), an inlet point (2) is located at the centre of two impellers (9), and two impellers (9) are all setovered with inlet point (2), and the direction of the biasing all hand of rotation with impeller is identical.

3, revolving plow reclaimer according to claim 1 and 2 is characterized in that impeller (9) and housing feed cavity (13) radially identical closely, and impeller (9) separates with housing discharging chamber (10).

4, revolving plow reclaimer according to claim 3, the radius that it is characterized in that said housing feed cavity (13) is r, the radius in housing discharging chamber (10) is R, both decentraction, r equals the radius of impeller (9) cylindrical, and R 〉=r.

5, revolving plow reclaimer according to claim 3, it is characterized in that between housing feed cavity (13) and the impeller (9) circular arc liner plate (15) being housed, the cylindrical of the interior circular arc of liner plate (15) and impeller (9) coincide, and is equipped with on the housing 1 to keep liner plate (15) and impeller (9) leak free clearance adjustment mechanism.

6, revolving plow reclaimer according to claim 5 is characterized in that said circular arc liner plate is the liner plate of half cone-shaped (29).

7, revolving plow reclaimer according to claim 5, it is characterized in that said clearance adjustment mechanism is the spring perch (21) that is contained on the housing (1), the gland (19) that is screwed on the spring perch (21) compresses the spring (20) that is placed in the spring perch (21), and spring (20) is pressed on the liner plate (15).

8, revolving plow reclaimer according to claim 5 is characterized in that said clearance adjustment mechanism is to be contained in housing (1) set screw (17) last or that be contained on the gland (19) to withstand on the circular arc liner plate (15), and locking with jam nut (18).

9, revolving plow reclaimer according to claim 5 is characterized in that said clearance adjustment mechanism is the plastic elastomeric (16) that is contained between housing (1) and the circular arc liner plate (15).

10, revolving plow reclaimer according to claim 5 is characterized in that said clearance adjustment mechanism is that claim 7,8, any two kinds combination or the three kinds of forms of 9 described three kinds of form clearance adjustment mechanisms are used simultaneously.

11, revolving plow reclaimer according to claim 1 and 2, it is characterized in that said transmission device comprises that bearing seat (3) is contained on the end cap (14), pivot shaft (23) is welded on the bearing seat (3), motor bedplate (24) kink is on pivot shaft (23), can swing around pivot shaft (23), electrical motor (25) is fixed by bolts on the motor bedplate (24), eyelet bolt (28) is contained in another root bead on the pivot shaft on the bearing seat (3), electrical motor (25) is by pulley conical disk (26), cone belt (27), pulley conical disk (6) links to each other with retarder (5) on being contained in bearing seat (3), and retarder (5) is connected with impeller (9) with coupler (4).