CN214366782U

CN214366782U - Double-side air inlet centrifugal machine

Info

Publication number: CN214366782U
Application number: CN202023285637.XU
Authority: CN
Inventors: 廖仁竹
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-10-08
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a double-sided air inlet centrifugal machine, which comprises a volute, an impeller arranged in the volute and a rotating shaft penetrating through the center of the impeller; two sides of the volute are respectively provided with two air inlets, the rotating shaft penetrates through the two air inlets, and two ends of the rotating shaft can be connected with the motor; the front side of the impeller is provided with a positive guide vane, and the back side of the impeller is provided with a reverse guide vane; the positive guide vane and the negative guide vane are respectively positioned at two sides of the rotating shaft, and the wind directions of the positive guide vane and the negative guide vane are the same. The utility model discloses a two air intake settings and single impeller setting make centrifuge air input can increase one time, and the external dimension is possible littleer to the spiral case.

Description

Double-side air inlet centrifugal machine

Technical Field

The utility model relates to a centrifugal ventilation technical field especially relates to a two-sided air intake centrifuge.

Background

The centrifugal fan is a mechanical part which increases the gas pressure and discharges the gas by means of the input mechanical energy, and is a driven fluid mechanical part. The centrifugal fan is widely applied to occasions such as factories, mines, tunnels, cooling towers, ships, buildings and the like, and is mainly used for ventilation, dust exhaust, cooling, grain sorting and the like.

Because centrifugal fan only has single air intake basically, this can restrict centrifugal fan's air input for centrifugal fan's row send gas efficiency lower, if through increasing centrifugal fan's size in order to improve the air input, then be unfavorable for the optimization of centrifugal fan structure.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a pair of two-sided air intake centrifugal fan, this two-sided air intake centrifugal fan can improve when discharging and send gaseous efficiency, optimizes centrifugal fan's size.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the double-sided air inlet centrifugal machine is characterized by comprising a volute, an impeller arranged in the volute and a rotating shaft penetrating through the center of the impeller; two air inlets are respectively arranged on two sides of the volute, the rotating shaft penetrates through the two air inlets, and two ends of the rotating shaft can be connected with a motor; the front side of the impeller is provided with a positive guide vane, and the back side of the impeller is provided with a negative guide vane; the positive guide vane and the negative guide vane are respectively positioned at two sides of the rotating shaft, and the wind direction of the positive guide vane is the same as that of the negative guide vane.

Compared with the prior art, the utility model discloses a two-sided air intake centrifuge drives the axis of rotation like the motor through the power supply, makes the impeller rotate, and the air receives the effect of centrifugal force and gets into the spiral case, and the air pressure increase will follow the air outlet and flow in the spiral case, and then realizes that the air flow produces high-pressure wind-force. The air inlets on the two sides of the volute enable the air input of the centrifuge to be doubled, and the air at the outlet is increased accordingly, so that more air can be blown out under the same size, and the efficiency is higher. Because only one impeller is arranged in the volute and guide vanes are arranged on the front side and the back side of the volute, the outer size of the volute can be smaller under the condition of the same two air inlets or the same power.

Preferably, the spiral casing device further comprises a support frame, and the spiral casing is fixed on the support frame.

Preferably, the support comprises a bottom frame, two side frames and a top frame; the two side frames are respectively arranged at two sides of the two air inlets, the bottom frame is connected with the top frame through the two side frames, the volute is arranged in an area defined by the two side frames, the bottom frame and the top frame, and the volute is respectively fixedly connected with the bottom frame and the top frame.

Preferably, the top frame is a top rod.

Preferably, the top chassis is square.

Preferably, two ends of the rotating shaft are respectively connected with a bearing, and the side frame comprises three connecting rods; one end of each of the three connecting rods is fixedly connected with the bearing, the other end of one of the three connecting rods is fixedly connected with the top frame, and the other ends of the other connecting rods are fixedly connected with the bottom frame.

Preferably, the support frame comprises a first sub frame and a second sub frame; the first sub-frame and the second sub-frame are fixedly connected with the volute respectively and are located on two sides of the two air inlets respectively.

Preferably, the two air inlets are circular.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present application;

FIG. 2 is a schematic view from another perspective of embodiment 1 of the present application;

fig. 3 is a schematic sectional view in the direction of a-a of fig. 2.

Wherein:

1. a support frame, 11, a bottom frame, 12, side frames, 121, a connecting rod, 13, a top frame,

2. a volute casing, 21, an air inlet, 22, an air outlet,

3. impeller, 31, positive guide vane, 32, negative guide vane,

4. and a rotating shaft and 5. a bearing.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be embodied in many other forms without departing from the spirit or essential characteristics thereof, and it should be understood that the invention is not limited to the specific embodiments disclosed below.

Example 1

As shown in fig. 1 to 3, the double-sided air inlet 21 centrifuge includes a volute 2, an impeller 3 disposed in the volute 2, and a rotating shaft 4 penetrating through the center of the impeller 3; two air inlets 21 are respectively arranged on two sides of the volute 2, the rotating shaft 4 penetrates through the two air inlets 21, and two ends of the rotating shaft 4 can be connected with a motor; the front side of the impeller 3 is provided with a positive guide vane 31, and the back side of the impeller 3 is provided with a negative guide vane 32; the forward guide vane 31 and the reverse guide vane 32 are respectively located at two sides of the rotating shaft 4, and the wind direction of the forward guide vane 31 and the wind direction of the reverse guide vane 32 are the same.

The two-sided air inlet 21 centrifuge of this embodiment 1 drives axis of rotation 4 through the power supply like the motor, makes impeller 3 rotate, and the air receives the effect of centrifugal force and gets into spiral case 2, and the air pressure increase will follow the air outlet and flow in the spiral case 2, and then realizes that the air flows and produces high-pressure wind-force. The air inlets 21 on the two sides of the volute 2 enable the air inflow of the centrifuge to be doubled, and the air of the air outlet 22 is increased accordingly, so that more air can be blown out under the same size, and the efficiency is higher. Furthermore, because only one impeller 3 is arranged in the volute 2 and guide vanes (namely the front guide vane 31 and the reverse guide vane 32) are arranged on the front side and the reverse side, the outer size of the volute 2 can be smaller under the condition of the same two air inlets 21 or the same power.

As the improvement of the scheme, the spiral case device further comprises a support frame 1, and the spiral case 2 is fixed on the support frame 1.

The support comprises a base frame 11, two side frames 12 and a top frame 13; the two side frames 12 are respectively arranged at two sides of the two air inlets 21, the bottom frame 11 and the top frame 13 are connected through the two side frames 12, the volute 2 is arranged in an area enclosed by the two side frames 12, the bottom frame 11 and the top frame 13, and the volute 2 is respectively fixedly connected with the bottom frame 11 and the top frame 13.

Optionally, the top frame 13 is a top rod, the top chassis 11 is square, two ends of the rotating shaft 4 are respectively connected with the bearings 5, and the side frame 12 includes three connecting rods 121; one end of each of the three connecting rods 121 is fixedly connected to the bearing 5, the other end of one of the connecting rods 121 is fixedly connected to the top frame 13, and the other ends of the other connecting rods 121 are fixedly connected to the bottom frame 11.

In this embodiment, the top frame 13 is a top rod, the bottom frame 11 is square, and the bottom frame 11 is matched with the side frames 12, so that the bottom frame 11, the two side frames 12 and the top frame 13 enclose a three-dimensional triangular area, thereby ensuring the stability of the support frame 1, and stably installing the volute 2 on the support frame 1. Furthermore, the side frame 12 comprises three connecting rods 121, and the three connecting rods 121 are respectively connected with the top frame 13 and the bottom frame 11 through bearings 5, so that the stability of the support frame 1 is further ensured.

As a modification of the above scheme, the support frame 1 comprises a first sub-frame and a second sub-frame; the first sub-frame and the second sub-frame are respectively fixedly connected with the volute 2 and are respectively positioned at two sides of the two air inlets 21.

As a modification of the above solution, the two air inlets 21 are circular.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any form, so that any simple modification, equivalent change and modification made by the technical entity of the present invention to the above embodiments without departing from the technical solution of the present invention all fall within the scope of the technical solution of the present invention.

Claims

1. The double-sided air inlet centrifugal machine is characterized by comprising a volute, an impeller arranged in the volute and a rotating shaft penetrating through the center of the impeller;

two air inlets are respectively arranged on two sides of the volute, the rotating shaft penetrates through the two air inlets, and two ends of the rotating shaft can be connected with a motor;

the front side of the impeller is provided with a positive guide vane, and the back side of the impeller is provided with a negative guide vane; the positive guide vane and the negative guide vane are respectively positioned at two sides of the rotating shaft, and the wind direction of the positive guide vane is the same as that of the negative guide vane.

2. The dual-sided air intake centrifuge of claim 1, further comprising a support frame, the volute being secured to the support frame.

3. The dual-sided air intake centrifuge of claim 2, wherein the support comprises a bottom frame, two side frames, and a top frame;

the two side frames are respectively arranged at two sides of the two air inlets, the bottom frame is connected with the top frame through the two side frames, the volute is arranged in an area defined by the two side frames, the bottom frame and the top frame, and the volute is respectively fixedly connected with the bottom frame and the top frame.

4. The dual sided air intake centrifuge of claim 3, wherein the top frame is a top bar.

5. The dual sided air intake centrifuge of claim 3, wherein the chassis is square.

6. The dual-sided air intake centrifuge of claim 3, wherein bearings are connected to both ends of the rotating shaft, respectively, and the side frame comprises three connecting rods;

one end of each of the three connecting rods is fixedly connected with the bearing, the other end of one of the three connecting rods is fixedly connected with the top frame, and the other ends of the other connecting rods are fixedly connected with the bottom frame.

7. The dual-sided air intake centrifuge of claim 2, wherein the support frame comprises a first sub-frame and a second sub-frame; the first sub-frame and the second sub-frame are fixedly connected with the volute respectively and are located on two sides of the two air inlets respectively.

8. The dual-sided air intake centrifuge of claim 1, wherein the two air intakes are circular.