CN210715281U

CN210715281U - Heat dissipation wheel device with seal for centrifugal fan

Info

Publication number: CN210715281U
Application number: CN201921899402.4U
Authority: CN
Inventors: 张有权; 杜立东
Original assignee: Hebei Zhongbang Energy Saving Technology Service Co ltd
Current assignee: Hebei Zhongbang Energy Saving Technology Service Co ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-06-09
Anticipated expiration: 2029-11-06

Abstract

The utility model discloses a sealed centrifugal fan of area is with heat dissipation wheel device, including heat dissipation wheel and closing plate, the heat dissipation wheel includes blade and sealed tooth, the blade is formed through connecting bolt connection by two semicircle ring blades, and sealed tooth evenly sets up on the left side wall of blade, be equipped with on the right side wall of closing plate and correspond anastomotic slot with sealed tooth, the center of closing plate is equipped with the through-hole, wherein: still include the casing curb plate, the right side wall of casing curb plate and the left side wall welding of closing plate, this take sealed centrifugal fan to use heat dissipation wheel device, simple structure has integrated labyrinth seal and the radiating function of bearing, can accelerate the air convection heat transfer on bearing box surface, effectual reduction bearing temperature, sealed effect is showing, axial span size has also been reduced, the manufacturing cost has been reduced, the user demand has been satisfied, solve the sealed and heat dissipation problem of bearing of fan on the basis of the span that does not increase the main shaft.

Description

Heat dissipation wheel device with seal for centrifugal fan

Technical Field

The utility model relates to a centrifugal ventilation equipment technical field specifically is a sealed for centrifugal fan wheel device that dispels heat in area.

Background

The high-temperature centrifugal fan works in a high-temperature environment for a long time, a heat dissipation wheel needs to be installed nearby a bearing box to reduce the temperature of a bearing and prolong the service life of the bearing, the main shaft is lengthened to keep the installation position of the heat dissipation wheel in a conventional device, the heat dissipation wheel is installed after a machine shell is installed and sealed, but the structure is too simple, the labyrinth seal and the bearing heat dissipation function cannot be integrated to accelerate the air convection heat transfer on the surface of the bearing box, the bearing temperature cannot be effectively reduced, the sealing effect is poor, the production and manufacturing cost is high, the use requirements cannot be met, the sealing problem of the fan and the heat dissipation problem of the bearing cannot be solved on the basis of not increasing the span of the main shaft, or the span of the main shaft and the sealing of the fan and the heat dissipation of the bearing cannot be well compatible and skillfully matched, and therefore the realization of the heat dissipation wheel device with the sealing for the centrifugal fan, which can solve the problems, is bound.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a sealed for centrifugal fan heat dissipation wheel device in area, solve the sealed and heat dissipation problem of bearing of fan on the basis of the span that does not increase the main shaft, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a kind of sealed heat-dissipating wheel device for centrifugal fan, including heat-dissipating wheel and closing plate;

a heat dissipation wheel: the heat dissipation wheel comprises blades and sealing teeth, the blades are formed by connecting two semicircular blades through connecting bolts, and the sealing teeth are uniformly arranged on the left side walls of the blades;

sealing plate: the right side wall of the sealing plate is provided with a tooth seam which is correspondingly matched with the sealing teeth, and the center of the sealing plate is provided with a through hole;

wherein: still include the casing curb plate, the right side wall of casing curb plate and the left side wall welding of closing plate, simple structure has integrateed labyrinth seal and the radiating function of bearing, can accelerate the air convection heat transfer on bearing box surface, and effectual reduction bearing temperature, sealed effect is showing, has also reduced axial span size, has reduced production manufacturing cost, has satisfied the user demand, solves the sealed and heat dissipation problem of bearing of fan on the basis of the span that does not increase the main shaft.

Furthermore, the central through hole of the sealing plate and the central round hole of the blade are correspondingly matched, so that normal installation is guaranteed.

Further, still include main shaft and bearing box, the lateral wall all rotates through bearing and main shaft to be connected about the bearing box, and the both ends of main shaft all extend to the outside of bearing box, and the blade presss from both sides the cover at the cambered surface left end of main shaft, and the left end of main shaft passes the central through-hole of closing plate and is connected through bearing and casing curb plate rotation, realizes the rotation support of normal rotation.

Furthermore, a gap exists between the blade and the bearing box, and convection heat dissipation is achieved.

Furthermore, the bottom of bearing box is equipped with the mount pad, provides bottom sprag and lays the place.

Compared with the prior art, the beneficial effects of the utility model are that: this take sealed radiator-fan device for centrifugal fan has following benefit: the heat dissipation wheel is used, the functions of labyrinth seal and bearing heat dissipation are integrated, throttling and pressure reduction are carried out after airflow passes through a tortuous channel formed by the sealing plate and the rotating part, medium leakage is organized, the pressure reduction is accelerated when the airflow passes through the tooth gaps on the sealing plate, the heat insulation expansion is similar, the speed of the airflow is suddenly reduced when the airflow enters the cavity, vortex is generated, the pressure is similar to isobaric expansion, the temperature of the airflow is basically unchanged after the airflow passes through a plurality of tooth gaps and the cavity, the pressure is gradually reduced, and finally the airflow approaches to be pressed, the generated resistance drop ensures sealing, the heat dissipation wheel rotates at high speed along with the main shaft, and the convection heat exchange of air on the surface of the bearing box can be accelerated, so the temperature of the bearing can be effectively reduced, and the heat dissipation wheel has a sealing function, therefore, the axial span size is reduced, the production and manufacturing cost is reduced, the use requirement is met, and the problems of sealing of the fan and heat dissipation of the bearing are solved on the basis of not increasing the span of the main shaft.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection structure of the blade, the seal teeth and the seal plate of the present invention;

fig. 3 is a schematic view of the blade structure of the present invention.

In the figure: 1 casing side plate, 2 heat dissipation wheels, 21 blades, 22 sealing teeth, 3 main shafts, 4 bearing boxes, 5 sealing plates and 6 connecting bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a kind of sealed heat-dissipating wheel device for centrifugal fan, including heat-dissipating wheel 2 and seal plate 5;

the heat dissipation wheel 2: the heat dissipation wheel 2 comprises blades 21 and sealing teeth 22, the blades 21 are formed by connecting two semicircular blades through connecting bolts 6 and are conveniently clamped on the main shaft 3, the sealing teeth 22 are uniformly arranged on the left side wall of the blades 21, and the functions of labyrinth sealing and bearing heat dissipation can be integrated by using the heat dissipation wheel 2;

and (5) sealing plate: the right side wall of the sealing plate 5 is provided with a tooth seam which is matched with the sealing teeth 22 correspondingly, throttling and pressure reduction are carried out after airflow passes through a tortuous channel formed by the sealing plate 5 and the rotating part, medium leakage is organized, the pressure reduction is accelerated when the airflow passes through the tooth seam on the sealing plate 5, the airflow is similar to adiabatic expansion, the airflow suddenly reduces the speed and generates vortex when entering the cavity, the vortex is similar to isobaric expansion, the temperature of the airflow is basically unchanged after the airflow passes through a plurality of tooth seams and the cavity, the pressure is gradually reduced, and finally the airflow approaches to be pressed, so that the generated resistance reduction ensures sealing, the center of the sealing plate 5 is provided with a through hole, and the center through hole of the sealing plate 5 is matched with;

wherein: still include casing curb plate 1, the right side wall of casing curb plate 1 and the left side wall welding of closing plate 5, casing curb plate 1 provides the support and lays the place.

Wherein: still include main shaft 3 and bearing box 4, main shaft 3 is revolution mechanic, bearing box 4 provides the support and lays the place, the lateral wall all rotates with main shaft 3 through the bearing about bearing box 4 to be connected, the both ends of main shaft 3 all extend to the outside of bearing box 4, blade 21 presss from both sides the cover at the cambered surface left end of main shaft 3, the left end of main shaft 3 passes the central through-hole of closing plate 5 and rotates with casing curb plate 1 through the bearing to be connected, there is the clearance blade 21 and bearing box 4, the bottom of bearing box 4 is equipped with the mount pad, be convenient for install, provide the outrigger.

When in use: the sealing plate 5 is welded on the shell side plate 1, two semicircular blades are connected through the connecting bolt 6 to form a blade 21, the blade 21 is sleeved on the main shaft 3, the main shaft 3 is fixedly connected with an output shaft of an external centrifugal fan through a coupler, when the external centrifugal fan rotates, the main shaft 3 rotates along with the external centrifugal fan, the heat dissipation wheel 2 also rotates simultaneously to dissipate heat for the bearing box 4, when the centrifugal fan operates, air flow does work through an impeller, the pressure in the shell side plate 1 is higher than the external pressure, the air flow flows out from a gap between the shell side plate 1 and the main shaft 3, due to the existence of labyrinth seal, the air flow basically cannot leak into the atmosphere, the heat dissipation wheel 2 is fixed on the main shaft 3 and rotates along with the main shaft 3 to do work on the surrounding air, the air flows to the surface of the bearing box 4, the convection heat dissipation of the bearing box 4 is accelerated, and the temperature of the bearing can be rapidly, the heat dissipation wheel 2 is used, the functions of labyrinth seal and bearing heat dissipation are integrated, the throttling and pressure reduction are carried out after the airflow passes through a tortuous channel formed by the sealing plate 5 and the rotating part, the medium leakage is prevented, the pressure reduction is accelerated when the airflow passes through the tooth gaps on the sealing plate 5, the heat insulation expansion is similar, the airflow suddenly reduces the speed and generates vortex when entering the cavity, the pressure expansion is similar to isobaric expansion, the temperature of the airflow is basically unchanged after the airflow passes through a plurality of tooth gaps and the cavity, the pressure is gradually reduced, and finally the pressure is close to the pressure, the generated resistance reduction ensures the seal, the heat dissipation wheel 2 can accelerate the air convection heat exchange on the surface of the bearing box 4 along with the high-speed rotation of the main shaft 3, so the bearing temperature can be effectively reduced, and the axial span size is also reduced because the seal teeth 22 on the left side wall of the blade 21 in the heat dissipation wheel, the production and manufacturing cost is reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sealed for centrifugal fan wheel device that dispels heat in area which characterized in that: comprises a heat dissipation wheel (2) and a sealing plate (5);

heat dissipation wheel (2): the heat dissipation wheel (2) comprises blades (21) and sealing teeth (22), the blades (21) are formed by connecting two semicircular blades through connecting bolts (6), and the sealing teeth (22) are uniformly arranged on the left side wall of the blades (21);

sealing plate (5): the right side wall of the sealing plate (5) is provided with a tooth seam which is correspondingly matched with the sealing teeth (22), and the center of the sealing plate (5) is provided with a through hole;

wherein: the sealing plate is characterized by further comprising a casing side plate (1), wherein the right side wall of the casing side plate (1) is welded with the left side wall of the sealing plate (5).

2. The heat dissipation wheel device with the seal for the centrifugal fan as claimed in claim 1, wherein: the central through hole of the sealing plate (5) is correspondingly matched with the central round hole of the blade (21).

3. The heat dissipation wheel device with the seal for the centrifugal fan as claimed in claim 1, wherein: still include main shaft (3) and bearing box (4), the lateral wall all rotates through bearing and main shaft (3) to be connected about bearing box (4), and the both ends of main shaft (3) all extend to the outside of bearing box (4), and blade (21) press from both sides the cover at the cambered surface left end of main shaft (3), and the left end of main shaft (3) passes the central through-hole of closing plate (5) and rotates through bearing and casing curb plate (1) to be connected.

4. The heat dissipation wheel device with the seal for the centrifugal fan as claimed in claim 3, wherein: the blade (21) and the bearing box (4) have a gap.

5. The heat dissipation wheel device with the seal for the centrifugal fan as claimed in claim 3, wherein: and the bottom end of the bearing box (4) is provided with a mounting seat.