CN203272266U

CN203272266U - Steam spraying vacuum pump

Info

Publication number: CN203272266U
Application number: CN 201320203117
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: 2013-11-06
Anticipated expiration: 2023-04-22

Abstract

The utility model relates to a steam spraying vacuum pump which comprises operation nozzles, a mixing chamber and a diffusion chamber. The operation nozzles extending to the mixing chamber are arranged at the front end of the mixing chamber, the rear end of the mixing chamber is in series connection with the diffusion chamber, and a sucking hole is formed in the side wall of the mixing chamber. The steam spraying vacuum pump is characterized in that the operation nozzles are formed by a plurality of small operation nozzles in an evenly distributed mode, a smooth transitional circular arc is adopted by a compression section of each small operation nozzle, the length of a diffusion section of each small operation nozzle is 200+/-10mm and the gradient of each diffusion section is 10 degrees. The steam spraying vacuum pump has the advantages that steam is distributed evenly, the steam is evenly mixed with sucked gas, steam power loss is small and the vacuum pumping effect is improved.

Description

A kind of steam jet vaccum

Technical field

The utility model relates to a kind of steam jet vaccum, particularly a kind of effective steam jet vaccum of bleeding.

Background technique

Steam jet vaccum is large due to rate of air sucked in required, operating range is wide, simple in structure, the parts that there is no relative movement, is a kind of broad-spectrum vacuum equipment, 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 steam jet vaccum adopts the single nozzle structure, and distribution of steam is inhomogeneous, and is poor with the mixed effect of pumped gas, affects vacuumizing effect, the explosion chamber single stage compression, and the fluctuation of mixed gas velocity variations is larger, and pumping efficiency is low.

Summary of the invention

The technical problems to be solved in the utility model is to provide a kind of effective steam jet vaccum of bleeding.

For solving the problems of the technologies described above, the technical solution of the utility model 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 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 by the even distribution and constitution of several little main jets, 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 utility model has the advantage of:

1 single nozzle parameter little main jet makes distribution of steam even, mixes with pumped gas more even, the raising vacuumizing 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 simultaneously resistance, have increased pumping efficiency;

The 3 disconnected length of little main jets diffusion become 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, mixes when under steam pressure and design degree of vacuum, pumped gas pressure coincide, and spray into the explosion chamber compressing section, the minimizing power loss.

Description of drawings

Fig. 1 is the utility model steam jet vaccum structural representation.

Fig. 2 is the medium and small main jet structural representation of the utility model.

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 by the even distribution and constitution of several little main jets 1, mixing chamber 2 front end outside installation end sockets, 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 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 by the even distribution and constitution of several little main jets, 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 °.