CN103244471A

CN103244471A - Steam jetting vacuum pump

Info

Publication number: CN103244471A
Application number: CN2013101394701A
Authority: CN
Inventors: 黄云峰
Original assignee: NANTONG SAFE MACHINERY EQUIPMENT CO Ltd
Current assignee: NANTONG SAFE MACHINERY EQUIPMENT CO Ltd
Priority date: 2013-04-22
Filing date: 2013-04-22
Publication date: 2013-08-14

Abstract

The invention relates to a steam jetting vacuum pump which comprises an operating nozzle, a mixing chamber and a diffusion chamber. The operating nozzle which extends into the mixing chamber is mounted at the front end of the mixing chamber, the diffusion chamber is serially connected to the rear end of the mixing chamber, and a suction inlet is arranged on a side wall of the mixing chamber. The steam jetting vacuum pump is characterized in that a plurality of small operating nozzles are uniformly distributed to form the operating nozzle, smooth transitional arcs are arranged on a compression section of each small operating nozzle, the length of a diffusion section of each small operating nozzle is 200+/-10mm, and the gradient of the diffusion section of each small operating nozzle is 10 degrees. The steam jetting vacuum pump has the advantages that steam is distributed uniformly, is uniformly mixed with pumped gas and is low in the power loss, and a vacuum pumping effect is improved.

Description

A kind of steam jet vaccum

Technical field

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

Background technique

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

At present traditional steam jet vaccum adopts the single nozzle structure, and distribution of steam is inhomogeneous, and is poor with the mixed effect of pumped gas, and influence vacuumizes effect, the explosion chamber single stage compression, and the fluctuation of mixed gas velocity variations is bigger, and pumping efficiency is low.

Summary of the invention

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

For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of 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 main jet is evenly distributed by several little main jets and forms, little main jet arranges mixing section, compressing section and diffuser from front to back, the circular arc of rounding off is adopted in the compressing section of little main jet, the diffuser length of described little main jet is 200 ± 10mm, and the gradient is 10 °.

The invention has the advantages that:

1 single nozzle parameter little main jet makes distribution of steam even, mixes more evenly with pumped gas, and raising vacuumizes effect;

2 little main jet compressing sections become arc transition by original straight transitions, and inside surface roughness reaches 0.4, have reduced the both vapor compression stroke, have reduced resistance simultaneously, have increased pumping efficiency;

The disconnected length of 3 little main jets diffusion becomes original 2/3rds, and angle becomes 10 degree by original 14 degree, avoid overexpansion, allow steam owe to expand as nozzle exit the unskilled labourer, continue to expand at mixing chamber, when pumped gas pressure coincide under steam pressure and the design degree of vacuum, mixes, and spray into the explosion chamber compressing section, the minimizing power loss.

Description of drawings

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

Fig. 2 is the medium and small main jet structural representation of the present invention.

Embodiment

As shown in Figure 1, mixing chamber 2 front ends are installed the main jet that stretches into mixing chamber 2, and the rear end arranges explosion chamber 3, and mixing chamber 2 sidewalls are opened suction port a.

Main jet is evenly distributed by several little main jets 1 and forms, end socket is installed in the mixing chamber 2 front ends outside, the end socket inner chamber is communicated with the inlet end of little main jet 1, the end socket center goes into operation and makes steam inlet d, as shown in Figure 2, little main jet 1 arranges mixing section 11, compressing section 12 and diffuser 13 from front to back, and the circular arc of rounding off is adopted in the compressing section 12 of little main jet 1, the diffuser length of little main jet is 200 ± 10mm, and the gradient of little main jet diffuser is 10 °.

Claims

1. 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 main jet is evenly distributed by several little main jets and forms, little main jet arranges mixing section, compressing section and diffuser from front to back, the circular arc of rounding off is adopted in the compressing section of little main jet, the diffuser length of described little main jet is 200 ± 10mm, and the gradient is 10 °.