CN2173768Y

CN2173768Y - High-efficiency air jet pump

Info

Publication number: CN2173768Y
Application number: CN 93234610
Authority: CN
Inventors: 邱瑞东
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-01
Filing date: 1993-09-01
Publication date: 1994-08-10
Anticipated expiration: 2003-09-01

Abstract

The utility model discloses an air jet pump, which is used for conveying powder and particulate materials. The utility model is good to the fluidizability of material and has high work efficiency. The utility model is characterized in that the bottom of a pump bin (1) with material inlet valve (5) is connected with a jet device (18), one end of the jet device (18) is a mixing chamber (21) and a pumping chamber (22), the other end is a nozzle position regulator (16) with nozzles (19), compressed air is connected with a ring shape gasification pipe (12) by relevant valves, the regulator (16), jet heads (4) which are respectively arranged on the upper part and the middle part of the pump bin (1), and the nozzles (19) which are composed of outer sleeves (27) and plunger pistons (26) are provided with shrink cavities (23), smooth cavities (24) and diffusion cavities (25). The utility model has the characteristics of simple structure, reliable performance and good energy-saving effect.

Description

High-efficiency air jet pump

The utility model relates to a kind of strength jet transmission pump of carrying powder and granule shape material.

Existing strength carries the powder and granule shape material device can carry out described conveying effectively, and disclosed 8921225.8.6 patent application is exactly an example as Chinese patent literature.Ideal and eductor work efficiency have much room for improvement etc. and to need improvements not to the utmost but this device exists control system complexity, fluidization of material.

The purpose of this utility model is, designs a kind of efficient strength jet transmission pump, can carry powder and granule shape material effectively, and high efficiency and save the energy, simple in structure, dependable performance.

The technical solution of the utility model is, it has the bottom is the pump storehouse of bullet, inlet valve and blow off valve are arranged at this top, pump storehouse and its bottom is communicated with through the reception room of blanking control gate with eductor, the exit end of described eductor have blending box with the pumping chamber and the other end relative with this exit end have the band nozzle the nozzle location regulating control, the overhanging end of described nozzle location regulating control be connected tracheae and join, join with air supply pipe through air inlet valve and connect tracheae, its constructional feature is, air inlet pipe communicates with the described tracheae that is connected through air intake control valve, the shower nozzle that is positioned at top, pump storehouse is connected with this air inlet pipe of ring-shaped gasification Guan Junyu that is positioned at middle part, pump storehouse, described ring-shaped gasification pipe is the structure that some fumaroles are arranged on circulating line and the tube wall, described nozzle is formed by the overcoat of inner chamber band tapering with supporting the plunger that is installed in this overcoat inner chamber, make described nozzle constitute contraction chamber successively thus according to air flow line, level and smooth chamber and diffusion chamber, and the cross-sectional area of contraction chamber is to level and smooth chamber convergent, each cross-sectional plane size of level and smooth chamber is identical and identical with the terminal cross-sectional area of contraction chamber, and the cross-sectional area of diffusion chamber is identical with level and smooth chamber cross-sectional plane size to jet expansion flaring and its initial cross-sectional plane.

Make below in conjunction with accompanying drawing and to further specify.

Description of drawings: Fig. 1 is a practical structures, and Fig. 2 is the nozzle sectional structure, and Fig. 3 is the A-A sectional structure of member shown in Figure 2.In the drawings:

1-pump storehouse, 2-visits glassware, 3-compression indicator, 4-shower nozzle, 5-inlet valve, the 7-blow off valve, 8-air inlet pipe, 9-air supply pipe, 10-air intake control valve, 11-air inlet valve, 12-ring-shaped gasification pipe, 15-connects tracheae, 16-nozzle location regulating control, 18-eductor, the 19-nozzle, 20-reception room, 21-blending box, 22-pumping chamber, the 23-contraction chamber, the level and smooth chamber of 24-, 25-diffusion chamber, 26-plunger, the 27-overcoat, the 28-bullet, 29-supports, 30-blanking control gate.

By accompanying drawing as can be known, it is the pump storehouse (1) of bullet (28) that the utility model has the bottom, inlet valve (5) and air bleeding valve (7) are arranged at this top, pump storehouse (1) and its bottom is connected through the reception room (20) of the same injector of blanking control gate (30) (18), the port of export of described injector (18) mixing chamber (21) is arranged with pumping chamber (22) and the other end relative with this port of export be equipped with the band nozzle (19) nozzle location adjuster (16), the overhanging end of described nozzle location adjuster (16) be connected tracheae (15) and join, join through the same air supply pipe of intake valve (11) (9) and connect tracheae (15), its design feature is, air inlet pipe (8) communicates with the described tracheae (15) that is connected through air intake control valve (10), the shower nozzle (4) that is positioned at top, pump storehouse (1) all is connected with this air inlet pipe (8) with the ring-shaped gasification pipe (12) that is positioned at middle part, pump storehouse (1), described ring-shaped gasification pipe (12) with pipeline do circularize and tube wall on some fumaroles are arranged, described nozzle (19) is made up of the overcoat (27) of inner chamber band tapering and the plunger (26) that is installed in this overcoat (27) inner chamber with support (29), and the nozzle (19) that consists of thus is according to air-flow side To forming successively contraction chamber (23), level and smooth chamber (24), diffusion chamber (25), and the cross section of contraction chamber (23) (refers to the cross section vertical with the horizontal axis of member shown in Fig. 2, also be cross section shown in Figure 3, afterwards together) area is to level and smooth chamber (24) convergent, this maximum area place, chamber is C cross section (referring to Fig. 2), and minimum place is the D cross section; Each cross-sectional area of level and smooth chamber (24) is identical and identical with the terminal cross section D of contraction chamber (23) area, and equate with diffusion chamber (25) top cross section E area, the cross-sectional area of diffusion chamber (25) is to the nozzle exit flaring, and namely its maximum cross section is the F cross section in exit and minimum cross-section is the E cross section. Described support (29) is designed to shown in Figure 3 being advisable upper equally distributed three of overcoat (27) inner chamber garden week, and its part facing to airflow direction is preferably streamlined. Described nozzle location adjuster (16) also is the structure of the bolt and nut governor motion of prior art.

Design principle of the present utility model and the course of work are, described nozzle (19) thus ad hoc structure make annular flow by its ejection reach supersonic speed to produce vacuum, it has removed inoperative jet-core region part in the strength conveying, and gather the collision of having avoided with tube wall in the jet, improved efficient, described ejector efficient is more much higher than prior art efficient, thereby has saved the energy; During device work, open earlier inlet valve (5) and air bleeding valve (7) charging, open valve (11) and (10), compressed air is through shower nozzle (4) and ring-shaped gasification pipe (12) makes the abundant fluidization of powder and granule shape material in the pump storehouse (1) and material is entered in the reception room (20) of ejector (18), member (4) and (12) make the fluidization of material be better than the effect of prior art, and simple and reliable for structure, and the vacuum that the supersonic jet of ejecting from high efficiency nozzle (19) produces is involved in fluidized material and injects mixing chamber (21) its jet, and material and air mix in mixing chamber (21) and again more evenly and with section Part jet mixing body kinetic energy is converted to pressure energy, enters subsequently diffuser casing (22), and the flow velocity of its fluid-mixing reduces and pressure further raises suddenly in diffuser casing (22), at last material is sent into conveyance conduit continuously, realizes mass transport.

As known from the above, the utility model is a kind of high-efficiency air jet pump, and the fluidization of material is abundant, and device can be carried powder and granule shape material expeditiously and good energy-conserving effect is simple in structure, easy to maintenance, dependable performance, easy operating and control.

Embodiment: according to the transmission pump of accompanying drawing and said structure, height is that 2.7 meters pump storehouse (1) volume is 3 cubic meters, the Dg value of nozzle (19) is 50 millimeters, compressed air pressure is 6 kg/cm, air quantity is 40 cubic meters per minute, the reception room volume of ejector (18) is φ 22 * 45 cm3s, is suitable for carrying materials such as cement, fly ash, 10 to 40 tons/hour of operational throughpuies.

Claims

1, a kind of efficient strength jet transmission pump, it is the pump storehouse (1) of bullet (28) that the bottom is arranged, inlet valve (5) and blow off valve (7) are arranged at this top, pump storehouse (1) and its bottom is communicated with through the reception room (20) of the same eductor of blanking control gate (30) (18), the exit end of eductor (18) has blending box (21) with pumping chamber (22) and the other end relative with this exit end has the nozzle location regulating control (16) of band nozzle (19), the overhanging end of described nozzle location regulating control (16) be connected tracheae (15) and join, connecting tracheae (15) joins through air inlet valve (11) and air supply pipe (9), it is characterized in that, air inlet pipe (18) communicates with the described tracheae (15) that is connected through air intake control valve (10), the shower nozzle (4) that is positioned at top, pump storehouse (1) all is connected with this air inlet pipe (8) with the ring-shaped gasification pipe (12) that is positioned at middle part, pump storehouse (1), described ring-shaped gasification pipe (12) is for there being the structure of some fumaroles on circulating line and the tube wall, described nozzle (19) is formed by the overcoat (27) of inner chamber band tapering with the plunger (26) that support (29) is installed in this overcoat (27) inner chamber, the nozzle of Gou Chenging (19) has contraction chamber (23) successively according to air flow line thus, level and smooth chamber (24) and diffusion chamber (25), and the cross-sectional area of contraction chamber (23) is to level and smooth chamber (24) convergent, each cross-sectional plane size of level and smooth chamber (24) is identical and identical with the terminal cross-sectional plane D of contraction chamber (23) area, and the cross-sectional area of diffuser chamber (25) is identical with level and smooth chamber (24) cross-sectional plane size to jet expansion flaring and its initial cross-sectional plane E.

2, efficient strength jet transmission pump according to claim 1 is characterized in that, described support (29) is for being evenly distributed on three on overcoat (27) the inner chamber circumference, and the part that faces toward air flow line is a stream line pattern.