Belt impeller charging gear
Technical field
The present invention relates to a kind of belt impeller charging gear, it is mainly used in the discharging of pulverulent materials such as fly ash or evenly reinforced.
Background technology
Discharge valve is a kind of device for powderies such as fly ash or granular material discharging, it is widely used in pharmacy, chemical industry, food, various fields such as feed., a kind of discharge valve of using always as shown in Figure 1 at present, it mainly is made of housing and the impeller of being located at the housing inner chamber, the top of housing is provided with feeding-passage, housing bottom is provided with tapping channel, impeller is by center shaft, evenly be laid in center shaft difference a plurality of blades in the radial direction and the front and back end plate formation of being located at the center shaft rear and front end respectively, thereby the front and back end plate forms a plurality of receiving hoppers that are distributed in the different circumferential positions of impeller with the front and back end captive joint of each blade.During work, discharge valve is installed on the discharge gate place of material carrying tool, the material that discharge gate is discharged is fallen in the receiving hopper at impeller top by feeding-passage, rotation along with impeller, the receiving hopper at top forwards the bottom to, and material is being discharged to by tapping channel on the container that connects material of another appointment under the deadweight effect.Because inner walls is the face of cylinder that cooperates with circumference of impeller, so impeller is in the process of housing rotation discharging relatively, forms with housing to be sealed and matched, and plays anti-leak-stopping material and locks gas.But because being sealed and matched to belong to firmly and being sealed and matched between the two, after time grown, can produce increasing friction gap between circumference of impeller and the housing, not only leak tightness can be worse and worse, it is more and more serious to cause leaking the material phenomenon, but also may result in blockage, influence the normal use of equipment.
Summary of the invention
In order to solve existing in prior technology the problems referred to above, the invention provides a kind of belt impeller charging gear, it not only can effectively isolate feeding-passage and tapping channel, and anti-leak-stopping material phenomenon takes place, and phenomenon is shut down in the obstruction that can avoid causing because of foreign matter.
Technical solution of the present invention is to constitute like this, a kind of belt impeller charging gear, it comprises housing, case top is provided with feeding-passage, housing bottom is provided with tapping channel, the housing inner chamber is provided with the impeller between feeding-passage and tapping channel, described impeller comprises center shaft, evenly is laid in center shaft difference a plurality of blades in the radial direction and the front and back end plate of being located at the center shaft rear and front end respectively, thereby described front and back end plate forms a plurality of receiving hoppers that are distributed in the different circumferential positions of impeller with the front and back end captive joint of each blade; It is characterized in that: described housing inner chamber also is provided with two groups of belt drive components that lay respectively at the impeller left and right sides, every group of belt drive component comprise last belt rotating shaft, the following belt rotating shaft of being located at orientation, impeller line of centers lower-left or orientation, bottom right of being located at the upper left orientation of impeller line of centers or upper right orientation, be positioned at least one tightening belt rotating shaft in belt rotating shaft and the following belt rotating shaft outside and walk around each belt rotating shaft successively after end to end endless belt, each belt rotating shaft is rotationally connected with housing and is parallel with the impeller line of centers; The zone of described endless belt between last belt rotating shaft and following belt rotating shaft closely is coated on the respective side circumference of impeller all the time, and coat interval circumference radian greater than the corresponding circumference radian of the angle of two adjacent blades, endless belt is to effective overlay length of impeller axial direction length that axially connects material greater than receiving hopper.
During work, feeding-passage is positioned at needs the discharge gate below of the container of discharging, by the unidirectional rotation of actuating device drives impeller, after material is fallen the receiving hopper at impeller top from feeding-passage, rotation along with impeller, the feeder hopper at impeller top forwards endless belt to the coating district of circumference of impeller, because endless belt has elasticity and tightly is overlaid on the circumference of impeller, therefore the rotation of impeller drives endless belt simultaneously and rotates synchronously, convey materials is to wheel bottom under complete sealing function with entering this regional feeder hopper opening, and last material is at the container that falls into by tapping channel under the deadweight effect below the tapping channel.
In addition, technique scheme of the present invention has also been done following improvement: described housing is pulled out opening in its upper left side and upper right side near the belt that the position of endless belt is respectively equipped with outwards to pull out endless belt, each belt rotating shaft stretch out housing and with being installed on housing outer detachable shaft forward and be dynamically connected.Because belt is pulled out the setting of opening, when needs are changed endless belt or certain belt rotating shaft, can disassemble housing, only need pull down detachable bearing earlier, extract each belt rotating shaft out, just can pull out opening part from belt and pull out endless belt, endless belt or each belt rotating shaft are changed.
Enter the coating interval of endless belt and impeller smoothly for the ease of the material that enters hopper, described housing inner chamber also is provided with and is positioned at the impeller top and forms the circular arc stock guide that running clearance cooperates with the upper impeller circumference, the front and back end plate of impeller is between the rear and front end of circular arc stock guide, the middle part of described circular arc stock guide offers with the feeding-passage bottom and is communicated with the feed openings that is connected, the left and right sides edge part of described circular arc stock guide is suspended between impeller and the endless belt, and the thickness of the left and right sides edge part of circular arc stock guide progressively reduces to the direction that keeps to the side.The circular arc stock guide not only plays the effect of guide, and the circumference of upper impeller is played certain sealing effectiveness.
In order to make belt impeller charging gear of the present invention further have the effect of lock gas, described circular arc stock guide rear and front end is separately installed with sealing band one near the position of end, the bottom of two sealing bands forms rotary seal with the circumferential upper part of the front and back end plate of impeller respectively and cooperates, and the inside edge of two sealing bands lays respectively at outside the medial surface of front and back end plate of impeller.
Compared to prior art, the present invention has the following advantages:
(1) because the present invention adopts endless belt that circumference of impeller is carried out soft seal, replaced prior art to adopt housing that the circumference that impeller carries out is sealed firmly, therefore not only fit closely between endless belt and the circumference of impeller, and both are synchronized with the movement, do not produce wearing and tearing, therefore can effectively completely cut off feeding-passage and tapping channel, thereby anti-leak-stopping material phenomenon takes place, by adjusting the rotating speed of impeller, also can realize evenly, accurately, feed control continuously;
(2) the present invention can change belt rotating shaft or endless belt under the situation of not disassembling housing, and is easy to maintenance;
(3) because the present invention adopts belt sealing to replace the circumference of prior art to seal firmly, and endless belt can be resisted foreign matter, therefore can both not guarantee that working stability carries out because foreign matter shutdowns that result in blockage arranged, can avoid using the dusting equipment of complexity again.
(4) cooperation by belt drive component, circular arc stock guide and sealing band, can make feed zone realize that basically the dense block air bound is exhausted, therefore can guarantee that feed zone can both normal operation at negative pressure or barotropic state, the phenomenon to the feed zone resorption takes place from the discharging zone to avoid material.
Description of drawings
Fig. 1 is the structural representation of existing a kind of discharge valve.
Fig. 2 is the structural representation of a kind of belt impeller charging gear provided by the invention.
Fig. 3 is the A-A cutaway view of Fig. 2.
Fig. 4 is another working state schematic representation of Fig. 3.
Fig. 5 is the B-B cutaway view of Fig. 2.
Fig. 6 is the lateral plan of Fig. 3.
Number in the figure explanation: 1, housing, 2, feeding-passage, 3, tapping channel, 4, impeller, 5, go up the belt rotating shaft, 6, belt rotating shaft down, 7, the tightening belt rotating shaft, 8, endless belt, 9, belt is pulled out opening, and 10, detachable bearing, 11, the circular arc stock guide, 12, feed openings, 13, sealing band.
The specific embodiment
Below in conjunction with specification drawings and specific embodiments content of the present invention is elaborated:
As Fig. 2-Figure 6 shows that example structure scheme drawing of a kind of belt impeller charging gear provided by the invention, it comprises housing 1, housing 1 top is provided with feeding-passage 2, housing 1 bottom is provided with tapping channel 3, housing 1 inner chamber is provided with the impeller 4 between feeding-passage 2 and tapping channel 3, described impeller 4 comprises center shaft, evenly be laid in center shaft difference a plurality of blades in the radial direction and the front and back end plate of being located at the center shaft rear and front end respectively, thereby described front and back end plate forms a plurality of receiving hoppers that are distributed in impeller 4 different circumferential positions with the front and back end captive joint of each blade; It is characterized in that: described housing 1 inner chamber also is provided with two groups of belt drive components that lay respectively at impeller 4 left and right sides, every group of belt drive component comprise last belt rotating shaft 5, the following belt rotating shaft 6 of being located at impeller 4 orientation, line of centers lower-left or orientation, bottom right of being located at the upper left orientation of impeller 4 line of centerss or upper right orientation, be positioned at least one tightening belt rotating shaft 7 in belt rotating shaft 5 and following belt rotating shaft 6 outsides and walk around each belt rotating shaft successively after end to end endless belt 8, each belt rotating shaft is rotationally connected with housing 1 and is parallel with impeller 4 line of centerss; The zone of described endless belt 8 between last belt rotating shaft 5 and following belt rotating shaft 6 closely is coated on the respective side circumference of impeller 4 all the time, and coat interval circumference radian greater than the corresponding circumference radian of the angle of two adjacent blades, effective overlay length of 8 pairs of impeller 4 axial directions of endless belt is greater than the length that axially connects material of receiving hopper.
Described housing 1 is pulled out opening 9 in its upper left side and upper right side near the belt that the position of endless belt 8 is respectively equipped with outwards to pull out endless belt 8, and housing 1 is stretched out in each belt rotating shaft and outer detachable bearing 10 is rotationally connected with being installed on housing 1.
Described housing 1 inner chamber also is provided with and is positioned at impeller 4 tops and forms the circular arc stock guide 11 that running clearance cooperates with impeller 4 top circumference, the front and back end plate of impeller 4 is between the rear and front end of circular arc stock guide 11, the middle part of described circular arc stock guide 11 offers with feeding-passage 2 bottoms and is communicated with the feed openings 12 that is connected, the left and right sides edge part of described circular arc stock guide 11 is suspended between impeller 4 and the endless belt 8, and the thickness of the left and right sides edge part of circular arc stock guide 11 progressively reduces to the direction that keeps to the side.
Described circular arc stock guide 11 rear and front ends are separately installed with sealing band 13 one near the position of end, the bottom of two sealing bands 13 forms rotary seal with the circumferential upper part of the front and back end plate of impeller 4 respectively and cooperates, the inside edge of two sealing bands 13 lays respectively at outside the medial surface of front and back end plate of impeller 4, referring to shown in Figure 5.Sealing band 13 can adopt polytetrafluoroethylene etc. not only to have certain degree of hardness but also had micro-elastomeric material to constitute.