Tandem type high-speed centrifugal fan and underwater oxygenation equipment

Abstract

The utility model provides a tandem type high-speed centrifugal fan and underwater oxygenation equipment, which relate to the technical field of high-speed centrifugal fans and comprise a primary high-speed centrifugal fan and a secondary high-speed centrifugal fan. Wherein the primary high-speed centrifugal fan is driven by a first motor, and a turbine shell of the primary high-speed centrifugal fan is provided with a first air inlet and a first air outlet; the secondary high-speed centrifugal fan is driven by a second motor, and a turbine shell of the secondary high-speed centrifugal fan is provided with a second air inlet and a second air outlet; and the first air outlet is hermetically communicated with the second air inlet. Therefore, the wind turbine has the advantages of being simple in structure, high in output wind pressure and capable of sharing axial tension.

Description

TECHNICAL FIELD

[0001] The utility model relates to high -speed centrifugal fan technical field especially relates to a series high -speed centrifugal fan and underwater oxygen -increasing equipment. BACKGROUND

[0002] High -speed centrifugal fan usually be applied to sewage treatment, electroplating, underwater oxygen -increasing, high -pressure air knife, high -pressure blast etc. need high -pressure air (40KPa above) scene. Centrifugal fan output wind pressure is higher, the axial force that the fan brings to motor needs bearing to bear, and the axial force is too big, and there is no suitable bearing can be used. This is a key point that restricts centrifugal fan to realize high wind pressure output.

[0003] Therefore, the market has a series fan through a motor coaxial driving two fans, the fan is mutually connected between the fan, and the two fans are same speed. That is, through the same motor axial both ends, each end all brings a fan, and a fan outlet is connected to the air inlet of another fan through pipeline. Thus, the high -speed centrifugal fan can output higher wind pressure, and the axial tension that the fan brings to motor is offset. But this technical scheme also has some shortcomings, for example: the structural feature is relatively complex, the manufacturing difficulty is big, and due to the limitation of structure resonance, bearing speed, bearing carrying capacity etc., the maximum speed is lower than the maximum speed of single product (a motor brings a fan).

[0004] Therefore, a series high -speed centrifugal fan with simple structure, high output wind pressure and axial tension sharing and underwater oxygen -increasing equipment needs to be designed. INVENTION CONTENTS

[0005] The utility model discloses a series high -speed centrifugal fan and underwater oxygen -increasing equipment, and at least one of the above technical problems is solved, which has the advantages of simple structure, high output wind pressure and axial tension sharing.

[0006] To achieve the above object, the utility model provides a series high -speed centrifugal fan on one hand, and the series high -speed centrifugal fan comprises:

[0007] The first high -speed centrifugal fan is driven by the first motor, and the turbine shell has a first air inlet and a first air outlet.

[0008] The second high -speed centrifugal fan is driven by the second motor, and the turbine shell has a second air inlet and a second air outlet.

[0009] The first air outlet is in sealing communication with the second air inlet.

[0010] Optionally, the air volume of the first high -speed centrifugal fan is matched with the air volume of the second high -speed centrifugal fan.

[0011] Optionally, the size and rotating speed of the first high-speed centrifugal fan and the second high-speed centrifugal fan are same or different.

[0012] Optionally, the series high-speed centrifugal fan further comprises a PLC controller, a first frequency converter and a second frequency converter; the PLC controller controls the operation of the first motor through the first frequency converter and controls the operation of the second motor through the second frequency converter.

[0013] Optionally, the PLC controller has a touch screen control panel.

[0014] Optionally, the series high-speed centrifugal fan further comprises a first detection sensor and a second detection sensor connected with the PLC controller; the first detection sensor is communicated with the inner cavity of the turbine shell of the first high-speed centrifugal fan and is used for detecting the flow of the first high-speed centrifugal fan; the second detection sensor is communicated with the inner cavity of the turbine shell of the second high-speed centrifugal fan and is used for detecting the flow of the second high-speed centrifugal fan.

[0015] Optionally, the series high-speed centrifugal fan further comprises a third high-speed centrifugal fan driven by a third high-speed motor, wherein the turbine shell of the third high-speed centrifugal fan has a third air inlet and a third air outlet; the third air inlet is in sealed communication with the second air outlet.

[0016] Optionally, the first high-speed centrifugal fan and / or the second high-speed centrifugal fan is a single-motor double-impeller high-speed centrifugal fan; the turbine shell of the single-motor double-impeller high-speed centrifugal fan is two independent turbine shells, each of which has an impeller; the high-speed motor of the single-motor double-impeller high-speed centrifugal fan is a double-head motor, which drives two impellers coaxially; and the air outlet of one turbine shell is in communication with the air inlet of the other turbine shell.

[0017] Optionally, the series high-speed centrifugal fan is applied to occasions with wind pressure of 40KPa or above.

[0018] The utility model discloses another aspect provides a kind of underwater oxygenation equipment, including the series high-speed centrifugal fan as described above.

[0019] Compared with the prior art, the application has the following advantages:

[0020] Since the primary high-speed centrifugal fan and the secondary high-speed centrifugal fan of the series high-speed centrifugal fan are respectively driven by the first motor and the second motor, and the first air outlet of the primary high-speed centrifugal fan is in sealing communication with the second air inlet of the secondary high-speed centrifugal fan, it is equivalent to manufacturing two independent high-speed centrifugal fans spliced together, and therefore, compared with a complex single-motor double-impeller fan, the series high-speed centrifugal fan has the advantage of simple structure; and the secondary high-speed centrifugal fan can perform secondary compression of air on the basis of the primary high-speed centrifugal fan, and therefore, the series high-speed centrifugal fan has the advantage of high output air pressure; and since the first motor and the second motor bear their own axial tension respectively, the series high-speed centrifugal fan can provide larger air pressure, and can share the axial tension. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0022] Figure 1 is a structural schematic diagram of the embodiment of the present application;

[0023] Figure 2 is a top view of the embodiment of the present application;

[0024] Figure 3 is a partial structure exploded schematic diagram of the embodiment of the present application Figure 1 ;

[0025] Figure 4 is a partial structure exploded schematic diagram of the embodiment of the present application Figure 2 ;

[0026] Figure 5 is a structural block diagram of the embodiment of the present application.

[0027] EXPLANATION OF REFERENCE NUMERALS

[0028] 100-series high-speed centrifugal fan;

[0029] 1-primary high-speed centrifugal fan; 11-turbine shell; a-first air inlet; b-first air outlet; 111-air inlet pipe; 112-air outlet pipe; 113-sealing connection disc; 12-first motor;

[0030] 2-secondary high-speed centrifugal fan; 22-second motor; c-second air inlet; d-second air outlet;

[0031] 3-PLC controller;

[0032] 4-first frequency converter;

[0033] 5 - second frequency converter;

[0034] 6 - first detection sensor;

[0035] 7 - second detection sensor. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] It should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "back", "side", "circumferential" and the like in the present application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the first, second, etc. words are only for distinguishing a plurality of components or structures with the same or similar structures, and do not indicate any special limitation on the arrangement order or connection relationship.

[0038] Embodiment one

[0039] Please refer to Figures 1 to 5 The embodiment of the present application provides a series type high-speed centrifugal fan 100, which is applied to sewage treatment, electroplating, underwater oxygenation, high-pressure air knife, high-pressure air blowing and other scenes requiring high-pressure air (40KPa or more). The series type high-speed centrifugal fan 100 comprises: a first high-speed centrifugal fan 1 and a second high-speed centrifugal fan 2.

[0040] The first high-speed centrifugal fan 1 is driven by a first motor 12, and the turbine shell 11 has a first air inlet a and a first air outlet b. Optionally, the side center of the turbine shell 11 of the first high-speed centrifugal fan 1 is provided with the first air inlet a which is an air inlet pipe 111 with a sealing connecting disc 113 and which is communicated with the internal space of the turbine shell 11; the first air outlet b is an air outlet pipe 112 with a sealing connecting disc 113 which is formed by extending from the side of the turbine shell 11. The first motor 12 is arranged on the side of the turbine shell 11 away from the first air inlet a, the output shaft (not shown in the figure) of the first motor 12 is fixedly connected with an impeller (not shown in the figure) located in the volute chamber surrounded by the volute, and the output shaft is rotatably arranged in the first high-speed centrifugal fan 1 through a bearing (not shown in the figure).

[0041] The second high-speed centrifugal fan 2 is driven by the second motor 22, and the turbine shell 11 has a second air inlet c and a second air outlet d. It can be understood that the structure of the second high-speed centrifugal fan 2 is similar to that of the first high-speed centrifugal fan 1, and therefore will not be described in detail here.

[0042] The first air outlet b is in sealed communication with the second air inlet c. That is, the air outlet pipe 112 of the first high-speed centrifugal fan 1 is in sealed communication with the air inlet pipe 111 of the second high-speed centrifugal fan 2 through the sealing connecting disc 113.

[0043] Since the first high-speed centrifugal fan 1 and the second high-speed centrifugal fan 2 of the series high-speed centrifugal fan 100 are respectively driven by the first motor 12 and the second motor 22, and the first air outlet b of the first high-speed centrifugal fan 1 is in sealed communication with the second air inlet c of the second high-speed centrifugal fan 2, it is equivalent to two independent high-speed centrifugal fans being spliced together. Therefore, compared with a complex single-motor double-impeller fan, it has the advantage of simple structure; and the second high-speed centrifugal fan 2 can perform secondary compression of air on the basis of the first high-speed centrifugal fan 1, thereby having the advantage of high output air pressure; and since the first motor 12 and the second motor 22 each bear their own axial tension, a larger air pressure can be provided, which is equivalent to sharing the axial tension.

[0044] In order to facilitate the butt joint installation of the first high-speed centrifugal fan 1 and the second high-speed centrifugal fan 2, optionally, please refer to Figure 2 In this embodiment, the angle between the first air inlet a of the first high-speed centrifugal fan 1 and the second air inlet c of the second high-speed centrifugal fan 2 is 90°. Of course, in other embodiments, the angle between the first air inlet a of the first high-speed centrifugal fan 1 and the second air inlet c of the second high-speed centrifugal fan 2 can also be other angles, which are not limited specifically here.

[0045] In order to improve the stability of the series high-speed centrifugal fan 100, optionally, in this embodiment, the air outlet capacity of the first high-speed centrifugal fan 1 matches the air inlet capacity of the second high-speed centrifugal fan 2. That is, the air outlet capacity of the first high-speed centrifugal fan 1 cannot exceed the air capacity that can be compressed and processed by the second high-speed centrifugal fan 2, so as to avoid negative effects on the operation of the second high-speed centrifugal fan 2, thereby causing the series high-speed centrifugal fan 100 to be unstable.

[0046] Optionally, please refer to Figure 1 and Figure 2In the embodiment, the size and the rotating speed of the first high-speed centrifugal fan 1 and the second high-speed centrifugal fan 2 are the same. Of course, in other embodiments, the size and the rotating speed of the first high-speed centrifugal fan 1 and the second high-speed centrifugal fan 2 can be partially the same or different. As long as the first air outlet b and the second air inlet c are in sealed communication, and the air volume of the first high-speed centrifugal fan 1 matches the air volume of the second high-speed centrifugal fan 2, no specific limitation is made herein.

[0047] In order to be able to control the first high-speed centrifugal fan 1 and the second high-speed centrifugal fan 2, optionally, please refer to Figure 5 In the embodiment, the series high-speed centrifugal fan 100 further comprises a PLC controller 3, a first frequency converter 4 and a second frequency converter 5. The PLC controller 3 controls the operation of the first motor 12 through the first frequency converter 4, and controls the operation of the second motor 22 through the second frequency converter 5. That is, the PLC controller 3 can send instructions to the first frequency converter 4 control and the second frequency converter 5 control respectively, for controlling the start, shutdown and speed regulation of the first motor 12 and the second motor 22. Specifically, the specific structure of the PLC controller 3, the first frequency converter 4 and the second frequency converter 5 is prior art, and therefore will not be described in detail herein. In order to facilitate operation, in the embodiment, the PLC controller 3 has a touch screen control panel (not shown in the figure). The control of the first motor 12 and the second motor 22 is realized by clicking the corresponding buttons (not shown in the figure) on the touch screen.

[0048] In order to know the running state of the first high-speed centrifugal fan 1 and the second high-speed centrifugal fan 2 at any time, and discover abnormal conditions in time, optionally, please refer to Figure 5 In the embodiment, the series high-speed centrifugal fan 100 further comprises a first detection sensor 6 and a second detection sensor 7 connected with the PLC controller 3, the first detection sensor 6 is in communication with the inner cavity of the turbine shell 11 of the first high-speed centrifugal fan 1 and is used for detecting the flow of the first high-speed centrifugal fan 1, and the second detection sensor 7 is in communication with the inner cavity of the turbine shell 11 of the second high-speed centrifugal fan 2 and is used for detecting the flow of the second high-speed centrifugal fan 2. In this way, the abnormal conditions of the first high-speed centrifugal fan 1 and the second high-speed centrifugal fan 2 can be discovered in time according to the measured flow data, so that the PLC controller 3 can take corresponding measures.

[0049] Optionally, in the embodiment, the above-mentioned series high-speed centrifugal fan 100 is applied to occasions with wind pressure of 40KPa or more. For example, sewage treatment, electroplating, underwater oxygenation, high-pressure air knife, high-pressure air blowing and other scenes requiring high-pressure air.

[0050] Another aspect of the embodiment of the utility model provides a kind of underwater oxygen increasing equipment (not shown in drawing), including the series high-speed centrifugal fan 100 as described above.Due to the underwater oxygen increasing equipment has all the structures and connection relations of series high-speed centrifugal fan 100, it has all the advantages of series high-speed centrifugal fan 100, which will not be described here.

[0051] Example two

[0052] This embodiment is basically same as example one, the difference is only that the series high-speed centrifugal fan further includes three-stage high-speed centrifugal fan (not shown in drawing) driven by third high-speed motor, and the turbine shell has third air inlet and third air outlet; third air inlet is in sealing communication with second air outlet.It can be understood that the structure of three-stage high-speed centrifugal fan is same as that of first-stage high-speed centrifugal fan, which will not be described here again.In order to achieve greater wind pressure, the series high-speed centrifugal fan can also be connected by more high-speed centrifugal fans, which will not be specifically limited here.

[0053] Example three

[0054] This embodiment is basically same as example one, the difference is only that first-stage high-speed centrifugal fan and / or second-stage high-speed centrifugal fan is single-motor double-impeller high-speed centrifugal fan (not shown in drawing);The turbine shell of single-motor double-impeller high-speed centrifugal fan is two independent volutes, each volute has impeller, and the high-speed motor of single-motor double-impeller high-speed centrifugal fan is double-head motor, which drives two impellers coaxially;And the air outlet of one volute is in communication with the air inlet of another volute.That is, first-stage high-speed centrifugal fan and / or second-stage high-speed centrifugal fan is connected in series inside, and the whole is connected in series, so as to realize the effect of increasing wind pressure.

[0055] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them;Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features;And these modifications or replacements do not make the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A series-connected high-speed centrifugal fan, characterized in that, include: A first-stage high-speed centrifugal fan (1) is driven by a first motor (12), and its turbine housing (11) has a first air inlet (a) and a first air outlet (b); The secondary high-speed centrifugal fan (2) is driven by the second motor (22), and its turbine housing (11) has a second air inlet (c) and a second air outlet (d); The first air outlet (b) and the second air inlet (c) are sealed and connected. The air volume of the first-stage high-speed centrifugal fan (1) is matched with the air volume of the second-stage high-speed centrifugal fan (2); It also includes a PLC controller (3), a first frequency converter (4), and a second frequency converter (5); the PLC controller (3) controls the operation of the first motor (12) through the first frequency converter (4), and controls the operation of the second motor (22) through the second frequency converter (5); It also includes a first detection sensor (6) and a second detection sensor (7) connected to the PLC controller (3) via signal. The first detection sensor (6) is connected to the inner cavity of the turbine housing (11) of the first-stage high-speed centrifugal fan (1) and is used to detect the flow rate of the first-stage high-speed centrifugal fan (1). The second detection sensor (7) is connected to the inner cavity of the turbine housing (11) of the second-stage high-speed centrifugal fan (2) and is used to detect the flow rate of the second-stage high-speed centrifugal fan (2).

2. The series-connected high-speed centrifugal fan as described in claim 1, characterized in that, The first-stage high-speed centrifugal fan (1) may have the same or different dimensions and rotational speed from the second-stage high-speed centrifugal fan (2).

3. The series-connected high-speed centrifugal fan as described in claim 1, characterized in that, The PLC controller (3) has a touch screen control panel.

4. The series-connected high-speed centrifugal fan as described in claim 1, characterized in that, It also includes a three-stage high-speed centrifugal fan driven by a third high-speed motor, wherein the turbine housing (11) has a third air inlet and a third air outlet; the third air inlet is sealed and connected to the second air outlet (d).

5. The series-connected high-speed centrifugal fan as described in claim 1, characterized in that, The first-stage high-speed centrifugal fan (1) and / or the second-stage high-speed centrifugal fan (2) are single-motor double-impeller high-speed centrifugal fans; the turbine housing of the single-motor double-impeller high-speed centrifugal fan consists of two independent volutes, each of which contains an impeller; the high-speed motor of the single-motor double-impeller high-speed centrifugal fan is a dual-head motor, which coaxially drives the two impellers; and the air outlet of one of the volutes is connected to the air inlet of the other volute.

6. An underwater oxygenation device, characterized in that, Including the series high-speed centrifugal fan as described in any one of claims 1-5.

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