CN205977804U

CN205977804U - A fan for flue gas is handled

Info

Publication number: CN205977804U
Application number: CN201620995776.6U
Authority: CN
Inventors: 黄维伦; 易立; 王煜威
Original assignee: Sichuan Three Dimensional Blower Co Ltd
Current assignee: Sichuan Three Dimensional Blower Co Ltd
Priority date: 2016-08-30
Filing date: 2016-08-30
Publication date: 2017-02-22
Anticipated expiration: 2026-08-30

Abstract

The utility model relates to a fan technical field, in particular to a fan for flue gas is handled, including the main shaft, set up the bearing box at main shaft both ends, set up main epaxial impeller assembly, casing and setting at casing both sides seal assembly, the impeller assembly setting is in the casing, every group impeller assembly includes two impellers, two impellers set up on the main shaft back -to -back, the air inlet on two impellers lies in the left and right sides of this group's impeller assembly respectively, be provided with left cavity and right cavity in the casing, two impellers are located left cavity and right cavity respectively, are provided with interface channel between left cavity and the right cavity. The impeller of this fan adopts the back to back installation mode, to the produced axial force cancel each other out of main shaft when the impeller is rotatory, has eliminated and has been used in the axial force on the bearing, has lengthened the life of bearing, compare the structure that the impeller set up side by side in traditional fan, can reduce the pressure of casing both sides seal assembly department high temperature flue gas, make seal assembly seal up main shaft and casing better.

Description

A kind of blower fan for fume treatment

Technical field

This utility model is related to blower fan technical field, particularly to a kind of blower fan for fume treatment.

Background technology

Fan industry at home, operating temperature at 650 DEG C, pressure reach 10kPa and more than, air quantity is in 1500Nm³/ h and The application of following small flow high pressure power superhigh-temperature and-pressure blower fan is more and more extensive, and at present, domestic this superhigh temperature blower fan is in combustion Apply also beyond example in the urea pyrolysis system of mechanism of qi thermoelectricity F level unit equipment for denitrifying flue gas, and the combustion of domestic current application Mechanism of qi thermoelectricity F level unit all uses external imported technology and equipment, and the blower fan supporting with it also only has flourishing state abroad Family can produce, and lead to production, maintenance cost cycle to remain high, and often maintenance cycle cannot be guaranteed.For realizing cigarette , to required pressure, existing blower fan is generally by the way of multiple impellers are pressurizeed, and many in its impeller of these blower fans for gas lift By the way of impeller is mounted side by side, this mounting structure can produce larger axial force to blower fan main shaft when impeller rotates, When multi-stage impeller operates simultaneously, produced axial force is then bigger, affects the stability of fan operation and making of fan bearing Use the life-span.

Utility model content

The purpose of this utility model is to solve the above-mentioned technical problem existing for existing blower fan, provides one kind to be used for flue gas The blower fan processing, its impeller installing is simple, can effectively eliminate impeller and rotate to axial force produced by main shaft, can be good Realize the pressurization to high-temperature flue gas.

For solving above-mentioned technical problem, this utility model employs a kind of blower fan for fume treatment, including main shaft, sets Put the bearing housing at main shaft two ends, the impeller sets being arranged on main shaft, casing and be arranged on casing both sides sealing assembly, described leaf Wheel group is arranged in casing, and every group of impeller sets include two impellers, and two impellers are arranged on main shaft back-to-back, on two impellers Air inlet respectively be located at this group impeller sets the left and right sides；It is provided with left chamber and right chamber room, two impellers in described casing It is located at left chamber respectively and right chamber is indoor, between described left chamber and right chamber room, be provided with interface channel.

In technique scheme, further, described casing is respectively arranged with inlet channel and exhaust passage, a described left side Chamber connects inlet channel, right chamber room connection exhaust passage, and described left chamber air inlet is equipped with left side impeller air inlet, Left chamber's gas outlet connection interface channel, interface channel connects right chamber inlet, right chamber inlet and right side impeller air inlet Mouth is equipped with, and right chamber exit connects exhaust passage.

In technique scheme, further, it is provided with certain gap, sealing group between described black box and casing Sealed by sealing ring between part and casing.

In this utility model, the impeller of blower fan adopts back-to-back mounting means, and two impellers are produced to main shaft when rotated Raw axial force size is identical, in opposite direction, and both cancel out each other, thus eliminating main shaft to act on the axial action on bearing Power, extends the service life of bearing；The left and right chamber of connection is set in casing simultaneously, is realizing the same of impeller two-stage pressurization When it is ensured that stability in transmitting procedure for the pressure, reduce pressure damage.

In addition, the impeller in this blower fan is arranged back-to-back, the air inlet of impeller is arranged towards the sealed end of casing, now respectively It is the inlet end of impeller, the structure being arranged side by side compared to impeller in conventional fan near casing sealing end, casing can be reduced The pressure of high-temperature flue gas at both sides sealing assembly, so that black box can preferably seal to main shaft and casing, it is to avoid The leakage of high-temperature flue gas.

Brief description

Fig. 1 is this utility model structural representation.

Fig. 2 is this utility model casing structure schematic diagram.

In figure：1st, main shaft, 2, bearing housing, 3, casing, 5, left chamber, 6, right chamber room, 8, impeller, 9, inlet channel, 10, row Gas passage, 11, interface channel, 12, black box.

Specific embodiment

With specific embodiment, this utility model is further described below in conjunction with the accompanying drawings.

As shown in figure 1, being used for the blower fan of fume treatment in the present embodiment, including main shaft 1, the axle that is arranged on main shaft 1 two ends Hold case 2, the impeller sets being arranged on main shaft 1, casing 3 and be arranged on casing 3 both sides sealing assembly 12, impeller sets are arranged on casing In 3, every group of impeller sets include two impellers 8, and two impellers 8 are arranged on main shaft 1 back-to-back, the air inlet on two impellers 8 It is located at the left and right sides of this group impeller sets respectively.It is provided with left chamber 5 and right chamber room 6, two impellers 8 are located at respectively in casing 3 In left chamber 6 and right chamber room 7, between left chamber 6 and right chamber room 7, it is provided with interface channel 11.

In above-described embodiment, the impeller of blower fan adopts back-to-back mounting means, and two impellers 10 are when rotated to main shaft 1 Produced axial force size is identical, in opposite direction, and both cancel out each other, thus eliminating the axial direction work that main shaft acts on bearing Firmly, extend the service life of bearing.

As Fig. 2, casing 3 is respectively arranged with inlet channel 9 and exhaust passage 10, left chamber 6 connects inlet channel 9, right Chamber 6 connects exhaust passage 10, and left chamber 5 air inlet is equipped with the air inlet of left side impeller, left chamber 5 gas outlet connection Interface channel 11, interface channel 11 connection right chamber room 6 air inlet, right chamber room 6 air inlet is set with the air inlet cooperation of right side impeller Put, right chamber room 6 gas outlet connection exhaust passage 10.

In the present embodiment, it is provided with certain gap between black box 12 and casing 3, for absorbing fan casing 3 Thermal expansion at high temperature, is sealed to gap between the two by sealing ring between black box 12 and casing 3.

Specification and drawings of the present utility model are considered as illustrative and not restrictive, open in this utility model Technical scheme on the basis of, those skilled in the art according to disclosed technology contents it is not necessary to performing creative labour just Some of them technical characteristic can be made with some replace and deform, these are replaced and deformation is all in protection model of the present utility model In enclosing.

Claims

1. a kind of blower fan for fume treatment it is characterised in that：The bearing housing that including main shaft, is arranged on main shaft two ends, setting Impeller sets on main shaft, casing and be arranged on casing both sides sealing assembly, described impeller sets are arranged in casing, every group of impeller Group includes two impellers, and two impellers are arranged on main shaft back-to-back, and the air inlet on two impellers is located at this group impeller respectively The left and right sides of group；It is provided with left chamber and right chamber room, two impellers are located at left chamber and right chamber interior respectively in described casing, It is provided with interface channel between described left chamber and right chamber room.

2. according to claim 1 be used for fume treatment blower fan it is characterised in that：It is respectively arranged with air inlet in described casing Passage and exhaust passage, described left chamber connects inlet channel, right chamber room connection exhaust passage, described left chamber air inlet and a left side Lateral lobe wheel air inlet is equipped with, left chamber's gas outlet connection interface channel, and interface channel connects right chamber inlet, right chamber room Air inlet is equipped with right side impeller air inlet, and right chamber exit connects exhaust passage.

3. the blower fan for fume treatment according to claim 1 or claim 2 it is characterised in that：Described black box and casing it Between be provided with certain gap, sealed by sealing ring between black box and casing.