Waste gas fan and waste gas treatment system

Abstract

The utility model provides a waste gas fan and a waste gas treatment system, and relates to the technical field of waste gas treatment. The waste gas fan comprises a fan body, a separation assembly, an air inlet pipe and a first connecting pipe; the fan body is provided with an air inlet end; the separation assembly comprises an outer shell and an inner shell; the air inlet pipe is connected with the top of the outer shell; the first connecting pipe penetrates through the outer shell, one end of the first connecting pipe is connected with the top of the inner shell, and the other end of the first connecting pipe communicates with the air inlet end. After flowing into the top of the inner cavity of the outer shell from the air inlet pipe, external waste gas flows downwards to the position below the inner shell along a gap between the outer shell and the inner shell, then turns back upwards, flows into the inner cavity of the inner shell and then flows into the air inlet end through the first connecting pipe. The humidity of the waste gas finally entering the air inlet end is reduced, the situation that corrosive liquid accumulates in a volute of the fan body can be improved, the volute and an impeller of the fan body are not prone to being corroded, and long-term stable operation of the whole waste gas fan is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment technical field especially, relates to a waste gas fan and waste gas treatment system. BACKGROUND

[0002] Centrifugal fan is widely used in various scenes because of its high wind pressure and large air volume, for example, is used as waste gas fan in waste treatment system.

[0003] The gas transported by waste gas fan is mostly high in humidity and corrosive. During long-term use, corrosive liquid often accumulates in the volute of the centrifugal fan, which can easily cause the volute and impeller to be corroded, and is not conducive to the normal operation of the fan. SUMMARY

[0004] In order to solve the problems existing in the prior art, one of the purposes of the utility model is to provide a waste gas fan.

[0005] The utility model provides the following technical scheme:

[0006] A waste gas fan comprises:

[0007] A fan body, the fan body has an air inlet end;

[0008] A separation assembly, the separation assembly comprises an outer shell and an inner shell, the outer shell and the inner shell are both cylindrical, the inner shell is arranged in the outer shell, and the bottom end of the inner shell is open;

[0009] An air inlet pipe, the air inlet pipe is connected with the top of the outer shell; and

[0010] A first connecting pipe, the first connecting pipe is arranged in the outer shell, one end of the first connecting pipe is connected with the top of the inner shell, and the other end of the first connecting pipe is communicated with the air inlet end.

[0011] As a further optional scheme of the waste gas fan, the separation assembly further comprises a first flow guide, the first flow guide is arranged in the outer shell, and the first flow guide is spirally arranged around the inner shell.

[0012] As a further optional scheme of the waste gas fan, the separation assembly further comprises a collecting pipe and a valve, the collecting pipe is connected with the bottom end of the outer shell, and the valve is arranged at one end of the collecting pipe away from the outer shell.

[0013] As a further optional scheme of the waste gas fan, the fan body comprises a driving motor, impellers and volutes, the impellers are arranged in pairs at two ends of the driving motor, the impellers are connected with the shaft of the driving motor, the volutes are arranged correspondingly to the impellers, the volutes are sleeved on the corresponding volutes, and the volutes have the air inlet ends;

[0014] The waste gas fan further comprises a machine box and a second connecting pipe, the machine box is internally provided with an air inlet cavity, one end of the first connecting pipe away from the inner shell is communicated with the air inlet cavity, and the second connecting pipe is arranged correspondingly to the volutes.

[0015] As a further optional scheme of the waste gas fan, the wall of the air inlet cavity is provided with an air inlet, the air inlet is communicated with one end of the first connecting pipe away from the inner shell, the air inlet cavity is provided with a flow dividing piece opposite to the air inlet, and the second connecting pipe is located on the two sides of the flow dividing piece respectively.

[0016] As a further optional scheme of the waste gas fan, the wall of the air inlet cavity is provided with an air inlet, the air inlet is communicated with one end of the first connecting pipe away from the inner shell, the air inlet cavity is provided with a flow dividing piece opposite to the air inlet, and the second connecting pipe is located on the two sides of the flow dividing piece respectively.

[0017] As a further optional scheme of the waste gas fan, the volute has an air outlet end, and the machine box is further provided with an air outlet cavity;

[0018] The waste gas fan further comprises a third connecting pipe, the third connecting pipe is arranged correspondingly to the volutes, one end of the third connecting pipe is connected with the air outlet end on the corresponding volute, and the other end of the third connecting pipe is communicated with the air outlet cavity.

[0019] As a further optional scheme of the waste gas fan, the wall of the air outlet cavity is provided with an air outlet, the air outlet cavity is provided with a second flow guide piece opposite to the air outlet, and the third connecting pipe is located on the two sides of the second flow guide piece respectively.

[0020] As a further optional scheme of the waste gas fan, the machine box is further provided with a mounting cavity, the fan body is arranged in the mounting cavity, and the wall of the mounting cavity is provided with a heat dissipation fan.

[0021] Another object of the utility model is to provide a waste gas treatment system.

[0022] The utility model provides the following technical scheme:

[0023] A waste gas treatment system comprises the waste gas fan.

[0024] The embodiment of the utility model has the following beneficial effects:

[0025] In the above waste gas fan, the air inlet pipe, the inner cavity of the outer shell, the inner cavity of the inner shell, the first connecting pipe and the air inlet end are sequentially communicated. During use, the air inlet end of the fan body inhales air. Because the air inlet pipe is connected with the top of the outer shell, and the first connecting pipe is connected with the top of the inner shell, after the external waste gas flows into the inner cavity of the outer shell from the air inlet pipe, the waste gas first flows downward along the gap between the outer shell and the inner shell to the lower part of the inner shell, then reverses upward, flows into the inner cavity of the inner shell from the bottom end of the inner shell which is provided with an opening, and then flows into the air inlet end through the first connecting pipe. During the reversing flow of the waste gas, small liquid droplets mixed in the gas are separated from the gas under the action of gravity and inertia, and do not flow into the inner cavity of the inner shell with the gas, but are deposited at the bottom of the outer shell. Therefore, the humidity of the waste gas entering the air inlet end is reduced, the accumulation of corrosive liquid in the volute of the fan body is improved, the volute and the impeller of the fan body are not easy to be corroded, and the long-term stable operation of the entire waste gas fan is facilitated.

[0026] In order to make the above-mentioned purposes, characteristics and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, other related drawings can also be obtained according to these drawings.

[0028] Figure 1 The overall structure schematic diagram of the waste gas fan provided by the embodiment of the utility model is shown in the figure.

[0029] Figure 2 The cross-sectional schematic diagram of the waste gas fan provided by the embodiment of the utility model is shown in the figure.

[0030] Figure 3 The internal structure schematic diagram of the air inlet cavity and the air outlet cavity in the waste gas fan provided by the embodiment of the utility model is shown in the figure.

[0031] Figure 4 The structure schematic diagram of the fan body in the waste gas fan provided by the embodiment of the utility model is shown in the figure.

[0032] Main element symbol explanation:

[0033] 100 - fan body; 110 - driving motor; 120 - impeller; 130 - volute; 131 - air inlet end; 132 - air outlet end; 200 - separation assembly; 210 - outer shell; 220 - inner shell; 230 - first flow guide; 240 - collection pipe; 250 - valve; 300 - air inlet pipe; 400 - first connecting pipe; 500 - case; 510 - air inlet cavity; 511 - air inlet; 512 - flow divider; 513 - air exchange opening; 514 - baffle; 520 - air outlet cavity; 521 - air outlet; 522 - second flow guide; 530 - mounting cavity; 531 - heat dissipation fan; 600 - second connecting pipe; 700 - third connecting pipe. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like component have the same or similar designations. The embodiments described are presented by way of example only and are not intended to limit the present application as defined by the appended claims and their equivalents.

[0035] It is to be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are used for explanation only and not intended to limit the present application.

[0036] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0039] Embodiments

[0040] Please see Figure 1 and Figure 2 The embodiment provides a waste gas fan, which comprises a fan body 100, a separation assembly 200, an air inlet pipe 300 and a first connecting pipe 400.

[0041] The fan body 100 has an air inlet end 131 (see Figure 4 ).

[0042] The separation assembly 200 comprises an outer shell 210 and an inner shell 220, and both the outer shell 210 and the inner shell 220 are in a cylindrical shape. The inner shell 220 is arranged in the outer shell 210, and the bottom end of the inner shell 220 is arranged in an open manner.

[0043] Correspondingly, the air inlet pipe 300 is connected with the top of the outer shell 210. The first connecting pipe 400 is arranged in the outer shell 210, one end of the first connecting pipe 400 is connected with the top of the inner shell 220, and the other end of the first connecting pipe 400 is communicated with the air inlet end 131.

[0044] In the waste gas fan, the air inlet pipe 300, the inner cavity of the outer shell 210, the inner cavity of the inner shell 220, the first connecting pipe 400 and the air inlet end 131 are communicated in sequence. In use, the air inlet end 131 of the fan body 100 inhales air. Since the air inlet pipe 300 is connected with the top of the outer shell 210 and the first connecting pipe 400 is connected with the top of the inner shell 220, the external waste gas flows into the top of the inner cavity of the outer shell 210 from the air inlet pipe 300, first flows downward along the gap between the outer shell 210 and the inner shell 220 to the lower part of the inner shell 220, then reverses upward, flows into the inner cavity of the inner shell 220 from the bottom end arranged in an open manner of the inner shell 220, and then flows into the air inlet end 131 through the first connecting pipe 400. In the process of reversing flow of the waste gas, small liquid drops mixed in the gas are separated from the gas under the action of gravity and inertia of the liquid drops themselves, and do not flow into the inner cavity of the inner shell 220 with the gas, but are deposited at the bottom of the outer shell 210. Therefore, the humidity of the waste gas finally entering the air inlet end 131 is reduced, the accumulation of corrosive liquid in the volute 130 of the fan body 100 is improved, the volute 130 and the impeller 120 of the fan body 100 are not easy to be corroded, and the long-term stable operation of the entire waste gas fan is facilitated.

[0045] In some embodiments, the outer shell 210 and the inner shell 220 are both cylindrical. The axis of the outer shell 210 is vertical, and the axis of the outer shell 210 coincides with the axis of the inner shell 220.

[0046] In addition, the axis of the air inlet pipe 300 and the axis of the first connecting pipe 400 are horizontal, and the air inlet pipe 300 is connected to the top side wall of the outer shell.

[0047] Further, the separation assembly 200 further comprises a first flow guide 230. The first flow guide 230 is arranged in the outer shell 210, and the first flow guide 230 is in a spiral shape around the inner shell 220.

[0048] After the exhaust gas enters the inside of the outer shell 210, it flows downward along the gap between the outer shell 210 and the inner shell 220 in a spiral shape under the guidance of the first flow guide 230. In this process, small droplets mixed in the gas are separated from the gas under the action of centrifugal force, thereby enhancing the gas-liquid separation effect, further reducing the humidity of the exhaust gas entering the air inlet end 131, and better improving the situation of accumulation of corrosive liquid in the volute 130 of the fan body 100.

[0049] In the present embodiment, the first flow guide 230 adopts a spiral flow guide plate, wherein the axis coincides with the axis of the inner shell 220, and the inner edge of the first flow guide 230 is fixedly connected with the outer wall of the inner shell 220, and the outer edge of the first flow guide 230 is fixedly connected with the inner wall of the outer shell 210.

[0050] Further, the separation assembly 200 further comprises a collection pipe 240 and a valve 250. The collection pipe 240 is connected with the bottom end of the outer shell 210, and the valve 250 is arranged at the end of the collection pipe 240 away from the outer shell 210.

[0051] After the small droplets mixed in the gas are separated from the gas, they settle at the bottom of the outer shell 210 and then accumulate in the collection pipe 240, without affecting the flow of the exhaust gas in the outer shell 210. The user can periodically open the valve 250 to discharge the corrosive liquid in the collection pipe 240 for centralized treatment.

[0052] Please refer to Figure 3 and Figure 4 In some embodiments, the fan body 100 comprises a driving motor 110, an impeller 120, and a volute 130.

[0053] Among them, the impeller 120 is arranged in pairs at both ends of the driving motor 110, and the impeller 120 is connected with the shaft of the driving motor 110. The volute 130 is correspondingly arranged with the impeller 120, and the volute 130 is sleeved on the corresponding volute 130, and the volute 130 has an air inlet end 131.

[0054] In use, the volute 130 remains stationary, the driving motor 110 drives the impeller 120 to rotate, and the gas in the volute 130 is discharged, so as to form a negative pressure at the air inlet end 131 of the volute 130 and inhale air.

[0055] Correspondingly, the above-mentioned exhaust fan further comprises a machine box 500 and a second connecting pipe 600. The machine box 500 is provided with an air inlet cavity 510, and the first connecting pipe 400 is communicated with the air inlet cavity 510 at the end away from the inner shell 220. The second connecting pipe 600 is correspondingly arranged with the volute 130, one end of the second connecting pipe 600 is connected with the air inlet end 131 of the corresponding volute 130, and the other end of the second connecting pipe 600 is communicated with the air inlet cavity 510.

[0056] In use, the air inlet end 131 of the volute 130 inhales the gas in the air inlet cavity 510 through the corresponding second connecting pipe 600 into the volute 130, a negative pressure is formed in the air inlet cavity 510, and then the gas in the inner shell 220 is inhaled into the air inlet cavity 510 through the first connecting pipe 400. In this way, the external exhaust gas flows through the air inlet pipe 300, the inner cavity of the outer shell 210, the inner cavity of the inner shell 220, the first connecting pipe 400, the air inlet cavity 510 and the second connecting pipe 600, and then flows into the volute 130.

[0057] Further, the wall of the air inlet cavity 510 is provided with an air inlet 511, and the air inlet 511 is communicated with the end of the first connecting pipe 400 away from the inner shell 220.

[0058] The air inlet cavity 510 is provided with a flow divider 512, and the flow divider 512 is opposite to the air inlet 511. In addition, the second connecting pipe 600 is located on both sides of the flow divider 512.

[0059] In use, the exhaust gas in the first connecting pipe 400 flows into the air inlet cavity 510 through the air inlet 511. Since the air inlet cavity 510 is provided with the flow divider 512 opposite to the air inlet 511, the exhaust gas flowing into the air inlet cavity 510 is divided by the flow divider 512 to flow into two second connecting pipes 600, which is beneficial to the uniform air intake of the air inlet ends of the two volutes 130.

[0060] Further, the wall of the air inlet cavity 510 is provided with an air exchange port 513, and the air exchange port 513 is covered with a baffle 514.

[0061] In use, the baffle 514 is in a normally closed state, ensuring that the air inlet cavity 510 is not directly connected with the external environment. The user can open the baffle 514 at regular intervals, at which time the air inlet end 131 of the volute 130 directly inhales external clean air through the second connecting pipe 600, the air inlet cavity 510 and the air exchange opening 513, achieving air exchange of the air inlet cavity 510, the second connecting pipe 600 and the volute 130 and the like, so as to keep them dry, which is also conducive to the long-term stable operation of the entire exhaust fan.

[0062] In some embodiments, the volute 130 has an air outlet end 132, and the cabinet 500 further has an air outlet cavity 520.

[0063] Correspondingly, the exhaust fan further comprises a third connecting pipe 700. The third connecting pipe 700 is arranged corresponding to the volute 130, one end of the third connecting pipe 700 is connected with the air outlet end 132 on the corresponding volute 130, and the other end of the third connecting pipe 700 is in communication with the air outlet cavity 520.

[0064] In use, the exhaust gas inhaled by the air inlet end 131 of each volute 130 is discharged from the air outlet end 132 and then flows into the air outlet cavity 520 through the corresponding third connecting pipe 700, and is then discharged in a concentrated manner.

[0065] Further, the wall of the air outlet cavity 520 is provided with an air outlet opening 521 (see Figure 2 ). The air outlet cavity 520 is provided with a second flow guide 522 opposite the air outlet opening 521. In addition, the third connecting pipe 700 is located on both sides of the second flow guide 522.

[0066] As can be understood, when the exhaust gas flowing into the air outlet cavity 520 through the third connecting pipe 700 flows towards the air outlet opening 521, the second flow guide 522 can separate and guide the two exhaust gases, weaken the turbulence generated by the mutual impact of the two exhaust gases, and facilitate the exhaust gas to be discharged more smoothly from the air outlet opening 521.

[0067] Please refer again to Figure 2 In some embodiments, the cabinet 500 further has a mounting cavity 530, and the fan body 100 is arranged in the mounting cavity 530. In addition, the wall of the mounting cavity 530 is provided with a cooling fan 531.

[0068] In use, the cooling fan 531 can drive the air in the external environment to continuously flow through the mounting cavity 530 for convective cooling, thereby taking away the heat generated by the fan body 100 during operation, cooling the fan body 100, and being conducive to the long-term stable operation of the entire exhaust fan.

[0069] Specifically, the mounting cavity 530 is arranged at the lower part of the cabinet 500, and the air inlet cavity 510 and the air outlet cavity 520 are arranged side by side at the upper part of the cabinet 500.

[0070] In summary, when the above-mentioned exhaust fan is used, the air inlet end 131 of the fan body 100 inhales air. Since the air inlet pipe 300 is connected to the top of the outer shell 210 and the first connecting pipe 400 is connected to the top of the inner shell 220, the external exhaust gas first flows spirally downward along the gap between the outer shell 210 and the inner shell 220 to the lower part of the inner shell 220, and then reverses upward and flows into the inner cavity of the inner shell 220 from the bottom end of the inner shell 220, and then flows into the air inlet end 131 through the first connecting pipe 400. In the process of the exhaust gas reversing flow, the small liquid droplets mixed in the gas are first separated from the gas under the action of centrifugal force, and then separated from the gas under the action of its own gravity and inertia, and do not flow into the inner cavity of the inner shell 220 with the gas, but are deposited at the bottom of the outer shell 210. Thus, the humidity of the exhaust gas finally entering the air inlet end 131 is reduced, which can improve the situation that the corrosive liquid accumulates in the volute 130 of the fan body 100, so that the volute 130 and the impeller 120 of the fan body 100 are not easy to be corroded, which is beneficial to the long-term stable operation of the entire exhaust fan.

[0071] The embodiment also provides an exhaust gas treatment system comprising the above-mentioned exhaust fan.

[0072] In all examples shown and described herein, any specific values should be interpreted as merely exemplary and not as a limitation, and thus, other examples of the example embodiments can have different values.

[0073] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0074] The above-mentioned embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. An exhaust fan characterized by, The exhaust fan comprises: a fan body having an air inlet end; a separation assembly comprising an outer shell and an inner shell, both of which are cylindrical, the inner shell is arranged in the outer shell, and the bottom end of the inner shell is open; an air inlet pipe connected to the top of the outer shell; and a first connecting pipe penetrating the outer shell, one end of the first connecting pipe being connected to the top of the inner shell, and the other end of the first connecting pipe being in communication with the air inlet end. The separation assembly further comprises a first flow guide arranged in the outer shell, which spirally surrounds the inner shell.

2. The exhaust fan of claim 1, wherein, The separation assembly further comprises a collection pipe connected to the bottom end of the outer shell, and a valve arranged at the end of the collection pipe away from the outer shell.

3. The exhaust fan of claim 1, wherein, The fan body comprises a driving motor, impellers arranged at both ends of the driving motor, and volutes corresponding to the impellers, the volutes being sleeved on the corresponding impellers, and the volutes having the air inlet end.

4. The exhaust fan of claim 1, 2, or 3, wherein, The exhaust fan further comprises a machine box having an air inlet cavity, one end of the first connecting pipe away from the inner shell being in communication with the air inlet cavity, and a second connecting pipe corresponding to the volutes, one end of the second connecting pipe being connected to the air inlet end on the corresponding volute, and the other end of the second connecting pipe being in communication with the air inlet cavity. An air inlet is arranged on the wall of the air inlet cavity, the air inlet being in communication with one end of the first connecting pipe away from the inner shell, a flow divider is arranged in the air inlet cavity, the flow divider facing the air inlet, and the second connecting pipe is respectively located on both sides of the flow divider.

5. The exhaust fan of claim 4, wherein, An air exchange opening is arranged on the wall of the air inlet cavity, and a baffle is arranged on the air exchange opening.

6. The exhaust fan of claim 4, wherein, The volute has an air outlet end, and the machine box further comprises an air outlet cavity; 7. The exhaust fan of claim 4, wherein, The exhaust fan further comprises a third connecting pipe corresponding to the volutes, one end of the third connecting pipe being connected to the air outlet end on the corresponding volute, and the other end of the third connecting pipe being in communication with the air outlet cavity. An air outlet is arranged on the wall of the air outlet cavity, a second flow guide is arranged in the air outlet cavity, the second flow guide facing the air outlet, and the third connecting pipe is respectively located on both sides of the second flow guide.

8. The exhaust fan of claim 7, wherein, The machine box further comprises a mounting cavity, the fan body is arranged in the mounting cavity, and a heat dissipation fan is arranged on the wall of the mounting cavity.

9. The exhaust fan of claim 4, wherein, The exhaust fan comprises any one of claims 1-9.

10. An exhaust gas treatment system characterized by, ​

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