CN2815979Y

CN2815979Y - High-pressure rotating material feeder

Info

Publication number: CN2815979Y
Application number: CN 200520085521
Authority: CN
Inventors: 部聪令; 甄霞; 邱化慧
Original assignee: HUIFENG MACHINERY GROUP CORP SHANDONG PROV
Current assignee: Shandong Zhangqiu Blower Co Ltd
Priority date: 2005-07-29
Filing date: 2005-07-29
Publication date: 2006-09-13
Anticipated expiration: 2015-07-29

Abstract

The utility model relates to a material feeding device for evenly quantificationally conveying materials, particularly a high-pressure rotating material feeder, which mainly solves the problems of seal and pressure resistance. The utility model comprises a casing body, an impeller and an end cover, wherein a rotating shaft of the impeller is arranged in the cylindrical casing body by a bearing; the casing body is provided with an upper part material hopper and a lower part discharge port, and the side face of the casing body is provided with a pressure equalizing air suction port. The utility model is characterized in that an inflation sealing ring with an inflation sealing opening is arranged between the end cover and the rotating shaft; a sealing ring is arranged on the impeller along the radial direction of the casing body and the impeller; the end cover is provided with a pressure spring which contacts with the sealing ring. Since a gap between the casing body and the impeller and a gap between the impeller and the end cover can be timely compensated after worn out, the material feeding device has the functions of high pressure resistant and reliable seal, can be applied to a high-pressure pneumatic conveying system, and can resist pressure of 0.4 Mpa. The utility model is especially suitable for materials which has good fluidization and fast degasification performance.

Description

The high-pressure rotary loader

Affiliated field

The utility model relates to a kind of feeding device that the material equal and quantitative is carried that carries out, and specifying is a kind of high-pressure rotary loader that has sealing automatic compensation structure and gas-flow closure circle.

Background technology

Rotary feeder is a kind of feeding device that the material equal and quantitative is carried that carries out.Existing rotary feeder claims star-like unloader, flapper again, and the structure of common rotary feeder partly is made up of housing 1, impeller 2, end cap 3 etc. as shown in Figure 1.Be exactly that the impeller that has several blades rotates in columnar housing 1 specifically, the material that falls into by deadweight from the top hopper fills in the space of blade, with the bottom that rotates to of impeller 2 draws off.Housing 1 side is provided with all presses air suctiton inlet, and the high pressure gas that impeller 2 revolutions can be brought from then on mouth siphon away, and reduce gas liftout phenomenon, help the smooth whereabouts of material.Sending formula air-transport system, rotary feeder for pressure sending type, suction is main loader equipment, the feed in conveying pipeline that it can be even and continuous, and in the separation of system, the portion of gathering dust, it can be used as the function of discharger.Rotary feeder has the function of lock gas, utilizes the close gap between housing 1 and the impeller 2 to guarantee sealing, and is withstand voltage at 0.1MPa.After the running wearing and tearing through certain hour, the gap between impeller 2 and the housing 1 is strengthened, and inleakage can reach 50% of the total tolerance of system, and the beyond retrieve property of its voltage endurance capability and leak free is a long-term unsolved difficult problem.

Rotary feeder is as a kind of feeding device that carries out the conveying of material equal and quantitative, be widely used in since strength carries as the loader equipment in the low pressure dilute phase system from eighties of last century, along with social development, technological advance, people are seeking the high voltage bearing loader of a kind of energy, thereby, done a large amount of technology explorations from improving structure so that can make its high pressure resistant starting with.Its major measure is the gap between the gap between minimizing housing 1 and the impeller 2, minimizing impeller 2 and the end cap 3, but fails to obtain good effect.Reason is crack between crack, impeller 2 and the end cap 3 between housing 1 and the impeller 2, is failing to be compensated timely after using wearing and tearing.

Summary of the invention

For overcoming above-mentioned prior art defective, the purpose of this utility model provides a kind of high-pressure rotary loader that has sealing automatic compensation structure and gas-flow closure circle.Can make loader have high pressure resistant and the reliable sealing function, can use at the high pressure air-transport system.

For achieving the above object, the technical solution of the utility model is: this high-pressure rotary loader, comprise housing, impeller, end cap, the rotating shaft of impeller is arranged in the columnar housing by bearing, and housing is established top hopper, bottom discharging opening, side and is provided with and all presses air suctiton inlet; It is characterized in that design has the gas-flow closure circle of band gas-flow closure mouth between end cap and rotating shaft; The radially aspect of housing and impeller adds seal ring on the impeller, establish the pressure spring that contacts with seal ring on end cap.

The quantity of impeller blade is the 12-18 sheet.To guarantee between impeller and the housing enough seal areas and high voltage bearing intensity being arranged.

The beneficial effects of the utility model are: owing to compensated timely after the wearing and tearing of crack between crack, impeller and the end cap between housing and the impeller, can make loader have high pressure resistant and the reliable sealing function, can use withstand voltage 0.4Mpa at the high pressure air-transport system.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the structural representation of existing rotary feeder,

Fig. 2 is a right part of the present utility model part scheme drawing,

Fig. 3 is the structural representation of impeller of the present utility model and housing seal,

Fig. 4 all presses the air suctiton inlet scheme drawing for housing of the present utility model,

Among the figure: 1 housing, 2 impellers, 3 end caps, 4 seal rings, 5 pressure springs, 6 rotating shafts, 7 gas-flow closure circles, 8 all press air suctiton inlet, 9 blades.

The specific embodiment

This high-pressure rotary loader comprises housing 1, impeller 2, end cap 3, and the rotating shaft of impeller is arranged in the columnar housing by bearing, and housing is established top hopper, bottom discharging opening, side parts such as all pressing air suctiton inlet is set.This is a prior art, and details are as follows for its improvements:

See Fig. 2.Mainly be the radial seal aspect of housing 1 and impeller 2, install the seal ring 4 of special material on the impeller 2 additional, under the effect of end cap 3 upward pressure springs 5, all the time seal ring is had thrust, thereby guarantee impeller after wearing and tearing, seal ring can play sealing function constantly.Be the side seal aspect of impeller 2 and end cap 3, design has the gas-flow closure circle 7 of band inflation sealing arrangement between end cap 3 and rotating shaft 6, the internal high pressure air seal can be unlikely to high pressure gas and leak from the axle head direction.At both ends covers and is provided with the gas-flow closure mouth, can charge into high pressure gas to impeller 2 and the space that end cap 3 forms by this mouthful, thereby has reduced the pressure reduction between system is inside and outside, has reduced gas leakage power, reaches failure-free sealing function and high voltage bearing function.

Structure of the present utility model adopts impeller 2 blades 9 to be no less than 12, sees accompanying drawing 3, to guarantee between impeller 2 and the housing 1 enough seal areas and high voltage bearing intensity being arranged.Gap between impeller and the housing is as far as possible little, to increase high pressure loader service life and sealing reliability.The utility model is provided with all pressures air suctiton inlet 8 of enough areas on housing, see accompanying drawing 4, and the high pressure gas in the system that impeller 2 revolutions can be brought are drained, and are beneficial to the unimpeded whereabouts of material.

The utility model proves through the application of a large amount of experimental tests and air-transport system engineering, can withstand voltage 0.4MPa.This result has reached design standard.

For carrying the good and fast material of degassing property of powder, particulate material, particularly fluidization, its result of use is obviously better than storehouse pump.

The utility model is in high pressure Dense Phase Pneumatic Conveying system, because the blade 9 of impeller 2 has the function of separating automatically to material in rotary course, so in course of conveying, can withstand voltagely can form the material bolt naturally again, be the feeder apparatus in a kind of desirable high pressure Dense Phase Pneumatic Conveying system.

Claims

1, high-pressure rotary loader comprises housing (1), impeller (2), end cap (3), and the rotating shaft of impeller is arranged in the columnar housing (1) by bearing, and housing (1) is established top hopper, bottom discharging opening, side and is provided with and all presses air suctiton inlet (8); It is characterized in that design has the gas-flow closure circle (7) of band gas-flow closure mouth between end cap (3) and rotating shaft (6); The radially aspect of housing (1) and impeller (2) adds seal ring (4) on the impeller (2), establish the pressure spring (5) that contacts with seal ring (4) on end cap (3).

2, high-pressure rotary loader according to claim 1 is characterized in that, the quantity of impeller (2) blade (9) is the 12-18 sheet.