CN223104876U - A high-efficiency sealing and pressure-maintaining structure for centrifugal fans - Google Patents

Abstract

The utility model belongs to the technical field of centrifugal fan equipment, and is particularly a centrifugal fan high-efficiency sealing and pressure-maintaining structure, including a main body bracket, a control panel, a protective shell and an exhaust port, wherein the control panel is arranged at the side end of the main body bracket, the protective shell is arranged at the middle upper end of the main body bracket, and the exhaust port is arranged at the upper end of the protective shell. By arranging a double-layer turbine mechanism, a guide cover, a drive shaft and an auxiliary impeller, the operator controls the operation of the motor through the control panel, and after the motor is started, the double-layer turbine mechanism is driven to rotate by the drive shaft, and the double-layer turbine mechanism drives the inner impeller and the auxiliary impeller to rotate through the connection of the connecting frame, and the rotation of the inner impeller generates wind pressure inside the guide cover. Since the front and rear ends of the guide cover are both flat-surface designed, and the drive shaft and the outer guide cover structure are simply sealed, the space inside the guide cover and the rear end has high-efficiency sealing, which not only reduces holes to ensure sealing, but also stabilizes wind pressure and expands the operating range.

Description

Efficient sealing and pressure maintaining structure of centrifugal fan

Technical Field

The utility model relates to the technical field of centrifugal fan equipment, in particular to a high-efficiency sealing and pressure maintaining structure of a centrifugal fan.

Background

The centrifugal fan is a machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, and is a driven fluid machine. Centrifugal fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air induction of boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household electrical appliances, drying and selection of grains, inflation and propulsion of wind tunnel wind sources and air cushion ships, and the like.

The prior art has the following defects that the prior art with the publication number CN109838393B comprises a shell and an impeller, wherein an air inlet and an air outlet are respectively arranged on the shell, a guide cover is fixed on the inner wall of the shell, the circumference of the guide cover surrounds the air outlet side of the impeller, a guide opening is arranged on one side of the guide cover, which is far away from the air inlet, and a guide surface for guiding air flow to move towards the guide opening is formed on the inner wall of the guide cover;

above-mentioned equipment can purify the exhaust gas through the cooperation of kuppe, impeller, strain structure such as dryer, can avoid environmental pollution, but this structure does not make the improvement to the sealed processing of kuppe inside and transmission structure junction, adopts traditional bolt to punch fixedly can produce the hole in the kuppe inboard, and the inside slot-like structure that has annular distribution of current fan structure, and this kind of structure not only influences the stability of wind pressure, and the air intake does not have special design, and the operating range is less.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a high-efficiency sealing pressure maintaining structure of a centrifugal fan, which solves the problems that the existing sealing performance is insufficient, the wind pressure stability is affected, and the gas diversion range is small.

The utility model provides a centrifugal fan high-efficiency sealing pressure maintaining structure, which comprises a main body support, a control panel, a protective shell and an air outlet, wherein the control panel is arranged at the side end of the main body support;

The inner side of the protective shell is provided with a guide cover, the middle part of the inner side of the guide cover is provided with a double-layer turbine mechanism, and the front end of the motor is provided with a driving shaft;

the air guide sleeve further comprises an exhaust groove and a through groove, wherein the exhaust groove is formed in the upper end surface of the air guide sleeve and is communicated up and down, and the through groove is formed in the middle end surface of the air guide sleeve and is communicated front and back.

As a preferable technical scheme of the double-layer turbine mechanism, the double-layer turbine mechanism further comprises a connecting frame, an inner-layer impeller and an auxiliary impeller, wherein the connecting frame is fixedly connected to the outer side of the double-layer turbine mechanism and extends outwards, the inner-layer impeller is penetrated by the connecting frame and establishes a fixed connection relationship, and the inner side of the auxiliary impeller is fixedly connected to the tail end extending outside the connecting frame.

As a preferable technical scheme of the utility model, the connecting frame is provided with six groups, and the connecting frames are radially and equidistantly distributed by taking the middle part of the double-layer turbine mechanism as an axle center.

As a preferable technical scheme of the utility model, six groups of cambered surface grooves with the same size are formed at the surface end of the double-layer turbine mechanism, and the middle part of the rear end is fixedly connected with the front end of the driving shaft.

As a preferable technical scheme of the utility model, the inner side of the inner-layer impeller is provided with an oblique blade structure, the inner side of the auxiliary impeller is provided with a blade groove structure, and the groove structures of the inner-layer impeller and the inner side of the auxiliary impeller face the same direction.

As a preferable technical scheme of the utility model, the front end surface and the rear end surface of the air guide sleeve are both subjected to plane treatment, and the position, close to the driving shaft, of the through groove is subjected to sealing treatment.

As a preferable technical scheme of the utility model, the joint of the protective cover and the rear end of the protective shell and the outer side of the air guide sleeve are subjected to sealing treatment.

Compared with the prior art, the utility model provides the efficient sealing and pressure maintaining structure of the centrifugal fan, which has the following beneficial effects:

This high-efficient sealed pressurize structure of centrifugal fan, through setting up double-deck turbine mechanism, the kuppe, drive shaft and auxiliary impeller, when this equipment is operated, the operator passes through the operation of control panel control motor, drive double-deck turbine mechanism through the drive shaft and rotate after the motor starts, double-deck turbine mechanism passes through the connection of link and drives inlayer impeller and auxiliary impeller and rotate, the inlayer impeller rotates and produces the wind pressure in the kuppe inside, drive the inside air current kuppe, and the auxiliary impeller that is close to the outside rotates the back and produces the wind pressure in the outside of double-deck turbine mechanism, enlarge the air current guiding range, make the air current of bigger area be introduced into the kuppe inside, finally discharge from the air exit, in the equipment operation in-process, because both ends all adopt planar design around the kuppe, and the drive shaft adopts simple sealing treatment with outside kuppe structure for the space inside kuppe and the rear end has high-efficient leakproofness, when reducing hole assurance leakproofness, also stabilized the wind pressure and enlarged the operation scope.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the position of the through slot inside the pod of the present utility model;

FIG. 3 is a schematic view of the front end connection structure of the driving shaft of the present utility model;

FIG. 4 is a double layer of the present utility model a turbine mechanism split schematic;

Fig. 5 is a schematic view of the rear end structure of the present utility model.

The device comprises a main body bracket 1, a control panel 2, a protective shell 3, a protective cover 4, an air outlet 5, a guide cover 501, an air exhaust groove 502, a through groove 6, a double-layer turbine mechanism 601, a connecting frame 602, an inner-layer impeller 603, an auxiliary impeller 7, a protective cover 8, a driving shaft 9 and a motor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, in this embodiment, a centrifugal fan high-efficiency sealing pressure maintaining structure comprises a main body support 1, a control panel 2, a protective casing 3 and an air outlet 4, wherein the control panel 2 is arranged at the side end of the main body support 1, the control panel 2 controls a motor 9, the protective casing 3 is arranged at the upper end of the middle part of the main body support 1, the protective casing 3 protects a guide cover 5, the air outlet 4 is arranged at the upper end of the protective casing 3, the air outlet 4 is used as a channel for discharging air, the rear end of the protective casing 3 is provided with a protective cover 7, the protective cover 7 protects the rear end of equipment, the middle part of the rear end of the protective cover 7 is provided with the motor 9, and the motor 9 drives a double-layer turbine mechanism 6;

the inner side of the protective shell 3 is provided with a guide cover 5, the guide cover 5 conveys gas to the air outlet 4, the middle part of the inner side of the guide cover 5 is provided with a double-layer turbine mechanism 6, the double-layer turbine mechanism 6 can increase the range of air flow introduction, the front end of the motor 9 is provided with a driving shaft 8, and the driving shaft 8 conducts the power of the motor 9;

The air guide sleeve 5 further comprises an air exhaust groove 501 and a through groove 502, wherein the air exhaust groove 501 is formed in the upper end surface of the air guide sleeve 5 and is vertically through, and the through groove 502 is formed in the middle end surface of the air guide sleeve 5 and is longitudinally through.

In the embodiment, the double-layer turbine mechanism 6 further comprises a connecting frame 601, an inner-layer impeller 602 and an auxiliary impeller 603, wherein the connecting frame 601 is fixedly connected to the outer side of the double-layer turbine mechanism 6 and extends outwards, the inner-layer impeller 602 is penetrated by the connecting frame 601 and establishes a fixed connection relationship, and the inner side of the auxiliary impeller 603 is fixedly connected to the tail end extending out of the connecting frame 601;

Specifically, by arranging six groups of connecting frames 601, the inner-layer impeller 602 and the auxiliary impeller 603 can be stably connected, so that the whole double-layer turbine mechanism 6 can be stably connected;

in the embodiment, six groups of cambered surface grooves with the same size are formed in the surface end of the double-layer turbine mechanism 6, and the middle part of the rear end is fixedly connected to the front end of the driving shaft 8;

Specifically, by forming the cambered surface groove on the outer side of the double-layer turbine mechanism 6, the transverse area of the double-layer turbine mechanism 6 can be reduced, the air flow passing range can be increased, and the air flow guiding speed can be increased;

in this embodiment, the front and rear end surfaces of the air guide sleeve 5 are both processed in a plane, the position of the through groove 502 close to the driving shaft 8 is processed in a sealing manner, and the joint between the protective cover 7 and the rear end of the protective housing 3 and the outer side of the air guide sleeve 5 are processed in a sealing manner.

When the equipment works, an operator controls the operation of the motor 9 through the control panel 2, the motor 9 is started and then drives the double-layer turbine mechanism 6 to rotate through the driving shaft 8, the double-layer turbine mechanism 6 drives the inner-layer impeller 602 and the auxiliary impeller 603 to rotate through the connection of the connecting frame 601, the inner-layer impeller 602 rotates to generate wind pressure inside the air guide cover 5 and drive gas to flow into the air guide cover 5, the auxiliary impeller 603 close to the outer side rotates to generate wind pressure outside the double-layer turbine mechanism 6, the air flow guiding range is enlarged, larger-area air flow is led into the air guide cover 5 and finally is discharged from the air outlet 4, and the traditional grooved structure is replaced by plane coverage inside the structure, so that the wind pressure is stabilized and the tightness is improved.

It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited thereto, but may be modified or substituted for some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. The utility model provides a centrifugal fan high-efficient sealed pressurize structure, includes main part support (1), control panel (2), protecting sheathing (3) and air exit (4), control panel (2) set up in the side of main part support (1), protecting sheathing (3) set up in main part support (1) middle part upper end, air exit (4) set up in the upper end of protecting sheathing (3), the rear end of protecting sheathing (3) is provided with visor (7), visor (7) rear end middle part is provided with motor (9), its characterized in that:

the inner side of the protective shell (3) is provided with a guide cover (5), the middle part of the inner side of the guide cover (5) is provided with a double-layer turbine mechanism (6), and the front end of the motor (9) is provided with a driving shaft (8);

The air guide sleeve (5) further comprises an air exhaust groove (501) and a through groove (502), the air exhaust groove (501) is formed in the upper end surface of the air guide sleeve (5) and is communicated up and down, and the through groove (502) is formed in the middle end surface of the air guide sleeve (5) and is communicated front and back.

2. The efficient sealing and pressure maintaining structure of a centrifugal fan, as set forth in claim 1, wherein the double-layer turbine mechanism (6) further comprises a connecting frame (601), an inner-layer impeller (602) and an auxiliary impeller (603), the connecting frame (601) is fixedly connected to the outer side of the double-layer turbine mechanism (6) and extends outwards, the inner-layer impeller (602) is penetrated by the connecting frame (601) and establishes a fixed connection relationship, and the inner side of the auxiliary impeller (603) is fixedly connected to the tail end extending outside the connecting frame (601).

3. The efficient sealing and pressure maintaining structure of the centrifugal fan of claim 2, wherein six groups of connecting frames (601) are arranged, and the connecting frames are radially and equidistantly distributed by taking the middle part of the double-layer turbine mechanism (6) as an axis.

4. The efficient sealing and pressure maintaining structure of the centrifugal fan, which is characterized in that six groups of cambered grooves with the same size are formed in the surface end of the double-layer turbine mechanism (6), and the middle part of the rear end is fixedly connected to the front end of the driving shaft (8).

5. The efficient sealing and pressure maintaining structure of a centrifugal fan according to claim 2, wherein an oblique blade structure is arranged on the inner side of the inner-layer impeller (602), a fan blade groove structure is formed on the inner side of the auxiliary impeller (603), and groove structures on the inner side of the inner-layer impeller (602) and the inner side of the auxiliary impeller (603) face the same direction.

6. The efficient sealing and pressure maintaining structure of the centrifugal fan of claim 1, wherein the surfaces of the front end and the rear end of the guide cover (5) are subjected to plane treatment, and the positions, close to the driving shaft (8), of the through grooves (502) are subjected to sealing treatment.

7. The efficient sealing and pressure maintaining structure of the centrifugal fan, which is characterized in that the joint of the protective cover (7) and the rear end of the protective shell (3) and the outer side of the air guide sleeve (5) are subjected to sealing treatment.