CN2777257Y

CN2777257Y - Jetting advancing rotating type jet-flow air sucking device

Info

Publication number: CN2777257Y
Application number: CN 200420032799
Authority: CN
Inventors: 魏仕英
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-02-12
Filing date: 2004-02-12
Publication date: 2006-05-03
Anticipated expiration: 2014-02-12

Abstract

The utility model relates to an air exhauster, which is orderly provided with a diffusion pipe, a mixing chamber and an air discharge pipe, wherein a spray propulsion air exhausting device of an outward rotation type is arranged in the mixing chamber. An inner spray head of the spray propulsion air exhausting device of an outward rotation type sprays downward, a blade is arranged to upward exhaust air and the outer wall of the mixing chamber is provided with an air exhausting pipe. The air exhauster uses rotary jet flow and the blade to simultaneously exhaust the air and uses the rotary jet flow and exhausted media to conduct heat mass transfer, and the vacuum degrees and the air exhausting capacity of a water spray device are increased. The application ranges of the water spray device are enlarged, and the utility model lays foundation for developing high-efficiency environment protection vacuum water cooling machines which use water as a working substance and a cooling medium. The utility model can be used for heat recovery systems of refrigeration, condensed water recovery, low-temperature water deoxidization and lower-grade heat sources as a water spray-rotary blade type vacuum pump or a compressor or as an air exhausting evaporator. The utility model can be used in heat and mass transfer devices of the departments of petrochemical engineering, metallurgy, electric power, etc.

Description

Jet propulsion rotary jet air ejector

(1) technical field: the utility model is a kind of fluid machinery.Genus is by directly contacting with other fluid or utilizing fluid inertia to come pumping fluid class (F04F) and have the spraying and the atomising device class (B05B) of mechanical draft.

(2) background technique: water ejector is widely used a kind of vacuum equipment in the industrial production, and advantage is simple in structure, movement-less part, and working stability is reliable, the working medium convenient sources, suction condensable gas ability is strong.Shortcoming is a suction non-condensible gas ability, and because of being subjected to limiting its ultimate vacuum and often can only reaching about 4Kpa (absolute pressure) of water saturation vapor tension, its working vacuum degree if can be extended to (0.7-2.6) Kpa, will extended use, some heat and mass equipment is undergone a radical change.Though rotary-vane vaccum pump and other oil-sealed rotary pump working vacuum degree can be in (0.1-1500) Pa scopes, be unsuitable for aspirating steam and under the condition of rugged environment, work.

Chinese invention patent " external rotation type spray-driven exhausting equipment " (ZL00112630.X) provides the possibility that jet vacuum pump and rotary-vane vaccum pump are combined as a whole.Preliminary experiment shows, this extractor fan shower nozzle is sprayed downwards, and rotation blade is upwards bled, and whole device is put in the what condenser, and air mass flow is under the condition of 1000Kg/h, and degree of vacuum is 68Kpa (absolute pressure), and pressure reduction is 32Kpa.

(3) summary of the invention:

The purpose of this utility model is rotary jet to be bled and the rotation blade water ejector of bleeding and combining together, with this gas clean-up and rate of air sucked in required, and makes it that multiple use be arranged.

This " jet propulsion rotary jet air ejector " technological scheme is as follows:

A kind of jet propulsion rotary jet air ejector is characterized in that this air ejector is provided with and is connected with in turn diffusing tube 1, mixing chamber 2, outlet pipe 3 in turn; Establish the fixedly external rotation type spray-driven exhausting equipment 4 (following summary is an extractor fan 4) of what outlet pipe bottom in the mixing chamber, cartridge nozzle set direction is spray downwards in it, and blade installing direction is for upwards bleeding; The mixing chamber outer wall is equipped with the exhaust tube 2.1 that is communicated with outside atmosphere.

Above-mentioned " external rotation type spray-driven exhausting equipment 4 " for Chinese patent (patent No. ZL00112630.X) wherein the visual purposes difference of blade make difformity, above-mentioned outlet pipe 3 is also looked the purposes difference and is made cylinder, diffuser pipe or volute shape, and exhaust mode is centrifugal supercharging type or axial flow.

This " jet propulsion rotary jet air ejector " beneficial effect: i. bleeds simultaneously with rotary jet and vane pump, has improved water ejector degree of vacuum and rate of air sucked in required, enlarges its application area, has opened up new markets in departments such as petrochemical industry, metallurgy, electric power.Ii. the present invention is for being that the new exploitation efficient, environment protection type vacuum freezing water machine of working medium and cold carrying agent lays the foundation with water.Iii. the present invention can be used as that the air exhausting type water evaporimeter is used to freeze, the heating power of condensed water recovery, low temperature water deoxygenation, low-grade heat source reclaims the yarn system.

(4) description of drawings:

This jet propulsion of Fig. 1 rotary jet air ejector embodiment 1 structural drawing

Fig. 2 Figure 1A-A sectional view

Fig. 3 extractor fan 4 diagrams

(5) embodiment:

Embodiment: comprise Fig. 1, Fig. 2, Fig. 3

See Fig. 1, this " jet propulsion rotary jet air ejector " is by convergence--and-diffused water jet diffusing tube 1, end socket type mixing chamber 2, cylindrical shape outlet pipe 3 threes connect as one with bolt 1.2,2.2.

Diffusing tube 1, mixing chamber 2, outlet pipe 3, extractor fan 4 four coaxial installations.The mixing chamber outer wall is established a straight length 2.3 as exhaust pipe, and its size is complementary with the blade 4.4 of inside.Mixing chamber 2 walls are offered exhaust tube 2.1, and it offers height below blade 4.4, shower nozzle 4.5 tops.

Outlet pipe 3 bottoms are inner flange 3.2 and the outward flange 3.3 that is connected as a single entity, extractor fan 4 fixedly the what inner flange and put what its below, and intake pipe 4.1, one ends of establishing the band elbow with install 4 water intake mechanisms 4.2 and be communicated with (see figure 3), the other end passes outlet pipe 3 walls and is communicated with outside water route.See Fig. 2, circumferentially offer three fan-shaped relief openings 3.4 of air-out between inside and outside flange, and be communicated with flange and bolt 3.1 and the outside wind path of bleeding.

See Fig. 3, establish atomization spray cap 4.5, hydroecium top outer surface that hollow rotation hydroecium 4.3, hydroecium surface symmetry adorns two and above rotation in the external rotation type spray-driven exhausting equipment 4 and circumferentially adorn two and above blade 4.4, hydroecium top the static feed liquor mechanism 4.2 that is communicated with it is set, and the submerged bearing 4.6 between it and hydroecium, friction of rest ring 4.7 and the gland 4.8 installed of weep hole 4.9 and non-feed-water end accordingly.

For giving full play to the centrifugal pressurized effect of rotary nozzle, increase effluxvelocity, reduce the jet liquid film thickness, obtain thinner spray, shower nozzle is got big turning radius; Corresponding therewith, diffusing tube is also got big inlet diameter and bigger convergence angle.

Working procedure: low-pressure water enters extractor fan 4 through intake pipe 4.1, after centrifugal supercharging, form spray downwards and burnt poly-what diffusing tube trunnion 1.3 near the fast rotational jet because its strong pumping action forms vacuum in the mixing chamber.From the gas that exhaust tube 2.1 enters, a part is rotated the jet suction, mixes the back and forms foam, and after the diffusing tube supercharging, the gas-liquid mixture of formation drains into atmosphere by outlet 1.1; Another part is then aspirated through outlet pipe 3 to next stage pressurized machine or atmosphere by blade 4.4.After mixing chamber reached the water saturation vapor tension, the water jet pumping action stopped, the water jet start vaporizer.At this moment vacuum action is realized by blade, and degree of vacuum is higher, and the blade rotation is fast more, and suction force is strong more.

Claims

1. a jet propulsion rotary jet air ejector is characterized in that this air ejector is provided with and is connected with in turn diffusing tube (1), mixing chamber (2), outlet pipe (3) in turn; Establish the fixedly external rotation type spray-driven exhausting equipment (4) of what outlet pipe bottom in the mixing chamber, cartridge nozzle set direction is spray downwards in it, and blade installing direction is for upwards bleeding; The mixing chamber outer wall is equipped with the exhaust tube (2.1) that is communicated with outside atmosphere.

2. by the described air ejector of claim 1, it is characterized in that establishing in the external rotation type spray-driven exhausting equipment (4) hollow rotation hydroecium (4.3), hydroecium surface symmetry and adorn atomization spray cap (4.5), the hydroecium top outer surface of two and above rotation and circumferentially adorn two and above blade (4.4), hydroecium top submerged bearing (4.6) between the static feed liquor mechanism (4.2) that is communicated with it and it and hydroecium, friction of rest ring (4.7) and the gland (4.8) installed of weep hole (4.9) and non-feed-water end accordingly are set.

3. by the described air ejector of claim 1, it is characterized in that diffusing tube (1) adopts convergence-diffused water jet diffusing tube; And diffusing tube, mixing chamber, outlet pipe, the coaxial installation of extractor fan.

4. by the described air ejector of claim 1, it is characterized in that mixing chamber (2) adopts end socket type mixing chamber; And outer wall establishes-and straight length (2.3) is as exhaust pipe, and its size is complementary with inner blade (4.4); Mix the exhaust tube (2.1) that locular wall is offered, it offers height below blade, the shower nozzle top.

5. by the described air ejector of claim 1, it is characterized in that inner flange (3.2) and the outward flange (3.3) of outlet pipe (3) bottom for being connected as a single entity, extractor fan (4) fixedly the what inner flange and put what its below, and establish the band elbow intake pipe (4.1), one end is communicated with device (4) water intake mechanism (4.2), and the other end passes outlet pipe (3) wall and is communicated with outside water route; And circumferentially offer three fan-shaped relief openings (3.4) of air-out between inside and outside flange, and be communicated with flange and bolt (3.1) and the outside wind path of bleeding.

6. by the described air ejector of claim 1, it is characterized in that outlet pipe (3) adopts cylinder, diffuser pipe or volute shape, exhaust mode adopts centrifugal supercharging type or axial flow.