CN102865258A

CN102865258A - Low-energy consumption steam jet vacuum pump

Info

Publication number: CN102865258A
Application number: CN201210394379XA
Authority: CN
Inventors: 许慧
Original assignee: NANTONG SAFE MACHINERY EQUIPMENT CO Ltd
Current assignee: NANTONG SAFE MACHINERY EQUIPMENT CO Ltd
Priority date: 2012-10-17
Filing date: 2012-10-17
Publication date: 2013-01-09
Anticipated expiration: 2032-10-17
Also published as: CN102865258B

Abstract

The invention relates to a low-energy consumption steam jet vacuum pump which comprises a work nozzle, a mixing chamber and a diffusion chamber, wherein the work nozzle extending into the mixing chamber is arranged at the front end of the mixing chamber; the diffusion chamber is serially connected with the rear end of the mixing chamber; and a suction inlet is arranged on the lateral wall of the mixing chamber. The innovation point is that the volume of the mixing chamber is 9-11 times that of a throat pipe section of the diffusion chamber; a compression section of the diffusion chamber adopts front and back two-stage compression; the gradient of the front-stage compression section is 12 degrees; the gradient of the rear-stage compression section is 10 degrees; jackets are arranged outside the compression section and the throat pipe section of the diffusion chamber, and an insulated steam inlet and an insulated steam outlet are arranged on the jackets. The low-energy consumption steam jet vacuum pump has the advantages that steam is provided to expand the space and can be better mixed with sampled gas, meanwhile, the mixed resistance is reduced; the compression section of the diffusion chamber becomes two-stage compression from single-stage compression; the steam is prevented from dropping on the mixing chamber; the speed change of the second mixed gas is more stable; the steam power loss is reduced; and the insulated jacket is added, so that the steam jet from the nozzle is prevented from achieving a freezing point to result in icing.

Description

A kind of low energy consumption steam jet vaccum

Technical field

The present invention relates to a kind of low energy consumption steam jet vaccum, particularly a kind of low energy consumption steam jet vaccum of bleeding effective.

Background technique

The low energy consumption steam jet vaccum is a kind of broad-spectrum vacuum equipments because rate of air sucked in required is large, operating range is wide, simple in structure, the parts that do not have relative movement, is mainly used in the aspects such as degasification, decolouring, drying, deodorization, distillation, refrigeration and conveying.Particularly it is to sucking the gas non-selectivity, in food production, petrochemical industry, grease processing, production of polyester, contain the occasions such as the material of organic solvent is concentrated, compares with oil-sealed rotary pump and demonstrates remarkable advantage.

At present traditional low energy consumption steam jet vaccum explosion chamber adopts single stage compression, and the fluctuation of mixed gas velocity variations is larger; Because the steam expansion degree reaches more than 4000, the steam that is sprayed by single nozzle can reach the freezing point, and easily icing effect is bled, and straight transitions is adopted in the single nozzle compressing section, and the both vapor compression stroke is large, and pumping efficiency is low.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of low energy consumption steam jet vaccum of bleeding effective.

For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of low energy consumption steam jet vaccum, comprise main jet, mixing chamber and explosion chamber, the mixing chamber front end is installed the main jet that stretches in the mixing chamber, mixing chamber rear end series connection explosion chamber, the mixing chamber sidewall is opened suction port, and explosion chamber is divided into compressing section, trunnion section and diffuser from front to back successively; Its innovative point is: described mixing chamber volume is the long-pending 9-11 of explosion chamber trunnion segment body times; Two-stage Compression before and after adopt the explosion chamber compressing section, the prime compressing section gradient is 12 °, and the rear class compressing section gradient is 10 °, and the compressing section of described explosion chamber and trunnion section arrange chuck outward, have insulation steam inlet/outlet on the chuck.

Further, described insulation steam inlet is arranged on the outside, prime compressing section of explosion chamber, and the insulation steam (vapor) outlet is arranged on the trunnion section outside of explosion chamber.

The invention has the advantages that:

1 mixing chamber volume and explosion chamber trunnion section volume ratio increase, and purpose provides steam and continues the expansion space, can better mix with pumped gas, reduces simultaneously mixing resistance;

2 explosion chamber compressing sections become twin-stage by original single stage compression, prevent that steam from getting on the mixing chamber, and second mixed gas velocity variations is more steady, reduce the steam power loss;

3 increase insulation jacket, avoid steam by the nozzle ejection to reach the freezing point causing icing.

Description of drawings

Fig. 1 is low energy consumption steam jet vaccum structural representation of the present invention.

Embodiment

As shown in Figure 1, mixing chamber 2 front ends are installed the main jet 1 that stretches into mixing chamber 2, and the rear end arranges explosion chamber, and mixing chamber 2 sidewalls are opened suction port a.

Explosion chamber is divided into compressing section 31, trunnion section 32 and diffuser 33 from front to back successively; Mixing chamber volume 2 is 9-11 times of explosion chamber trunnion section 32 volumes.Two-stage Compressions before and after adopt explosion chamber compressing section 31, the prime compressing section gradient is 12 °, the rear class compressing section gradient is 10 °, outside the compressing section of explosion chamber and trunnion section chuck 4 is set, and has insulation steam inlet b, insulation steam (vapor) outlet c on the chuck 4.

Insulation steam inlet b is arranged on the outside, prime compressing section of explosion chamber, and insulation steam (vapor) outlet c is arranged on trunnion section 32 outsides of explosion chamber.

Claims

1. low energy consumption steam jet vaccum, comprise main jet, mixing chamber and explosion chamber, the mixing chamber front end is installed the main jet that stretches in the mixing chamber, mixing chamber rear end series connection explosion chamber, the mixing chamber sidewall is opened suction port, and explosion chamber is divided into compressing section, trunnion section and diffuser from front to back successively; It is characterized in that: described mixing chamber volume is the long-pending 9-11 of explosion chamber trunnion segment body times; Two-stage Compression before and after adopt the explosion chamber compressing section, the prime compressing section gradient is 12 °, and the rear class compressing section gradient is 10 °, and the compressing section of described explosion chamber and trunnion section arrange chuck outward, have insulation steam inlet/outlet on the chuck.

2. low energy consumption steam jet vaccum according to claim 1 is characterized in that: described insulation steam inlet is arranged on the outside, prime compressing section of explosion chamber, and the insulation steam (vapor) outlet is arranged on the trunnion section outside of explosion chamber.