Fan and waste gas treatment equipment

Abstract

The embodiment of the utility model provides a fan and waste gas treatment equipment, and relates to the technical field of waste gas treatment equipment. The fan of the waste gas treatment equipment comprises a shell, a motor, an impeller assembly and a supporting plate. A cavity is formed in the shell. The shell is provided with an air inlet and an air outlet. The motor is arranged on one side of the shell. The motor comprises a motor shaft extending into the cavity. The impeller assembly comprises an impeller. The impeller is arranged in the cavity and fixedly connected with the motor shaft so that the impeller can be driven by the motor to rotate. The impeller rotates to drive gas to move from the gas inlet to the gas outlet. The supporting plate is fixedly connected between the motor and the shell. A flow guide cavity communicating with the cavity is formed in the supporting plate. A water inlet and an air blowing opening which are communicated with the flow guide cavity are formed in the supporting plate. According to the utility model, the interior of the fan can be cleaned, dust residues are prevented, waste gas can be prevented from causing powder clamping and corrosion to a motor shaft, and the service life of the fan is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of waste gas treatment equipment, and more specifically, to a fan and waste gas treatment equipment. Background Technology

[0002] Fans are one of the key components in waste gas treatment equipment. Their main function is to transport waste gas from one treatment unit to another or to eventually discharge it into the atmosphere through forced ventilation.

[0003] However, exhaust gases often contain a large amount of dust particles. When the exhaust gas enters the fan, some of the dust remains inside. Due to the complex internal structure of the fan, which contains multiple rotating parts such as the motor shaft and blades, this dust will move within the fan and may adhere to these rotating parts. The motor shaft, in particular, as the core power component of the fan, is susceptible to dust accumulation if too much dust accumulates, potentially causing it to become stuck and affecting the fan's normal operation. Furthermore, some corrosive dust particles may corrode the motor shaft, further shortening the fan's lifespan. Utility Model Content

[0004] The purpose of this utility model is to provide a fan and exhaust gas treatment equipment that can clean the inside of the fan, prevent dust residue, avoid dust blockage and corrosion of the motor shaft by exhaust gas, and improve the service life of the fan.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] In a first aspect, this utility model provides a fan, comprising:

[0007] The outer casing has a cavity inside, and an air inlet and an air outlet are provided on the outer casing.

[0008] An electric motor is disposed on one side of the housing, and the electric motor includes a motor shaft extending into the cavity;

[0009] An impeller assembly, comprising an impeller disposed within the cavity and fixedly connected to the motor shaft, such that the impeller rotates under the drive of the motor, and the rotation of the impeller drives gas to move from the air inlet to the air outlet;

[0010] A support plate is fixedly connected between the motor and the housing. A flow guide cavity communicating with the cavity is provided inside the support plate. A water inlet and an air outlet communicating with the flow guide cavity are provided on the support plate.

[0011] Secondly, this utility model provides a waste gas treatment device, including the fan described in any of the foregoing embodiments.

[0012] The beneficial effects of the fan and exhaust gas treatment equipment provided in this embodiment of the utility model include:

[0013] The exhaust gas treatment equipment of this utility model includes a fan comprising a casing, a motor, an impeller assembly, and a support plate. A cavity is provided inside the casing. An air inlet and an air outlet are provided on the casing. The motor is located on one side of the casing. The motor includes a motor shaft extending into the cavity. The impeller assembly includes an impeller. The impeller is disposed within the cavity and fixedly connected to the motor shaft, so that the impeller rotates under the drive of the motor. The rotation of the impeller drives the gas to move from the air inlet to the air outlet. The support plate is fixedly connected between the motor and the casing. A guide cavity communicating with the cavity is provided within the support plate. A water inlet and an air blowing port communicating with the guide cavity are provided on the support plate. By providing a guide cavity to communicate with the cavity, when the fan is not working, clean water is introduced into the cavity through the water inlet to clean the inside of the cavity and prevent dust in the exhaust gas from remaining inside the cavity. After the clean water is introduced, nitrogen is introduced through the air blowing port to purge the inside, preventing water droplets from remaining on the impeller assembly and quickly drying it. When the blower starts, nitrogen is continuously introduced through the air inlet, forming an isolation zone in the guide cavity to prevent exhaust gas from rising and avoid dust accumulation or corrosion of the motor. This invention can clean the inside of the blower, prevent dust residue, and also prevent exhaust gas from causing dust accumulation and corrosion on the motor shaft, thus improving the service life of the blower. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the fan according to the first embodiment of the present invention;

[0016] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0017] Figure 3 This is a schematic diagram of the support plate according to the first embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the impeller assembly according to the first embodiment of the present invention;

[0019] Figure 5 This is a cross-sectional view of the impeller assembly according to the first embodiment of the present invention.

[0020] Icons: 100-Fan; 10-Casing; 11-Cavity; 12-Air Inlet; 13-Air Outlet; 14-Annular Boss; 15-Drain; 20-Motor; 21-Motor Housing; 22-Motor Shaft; 30-Impeller Assembly; 31-Impeller; 311-Top Plate; 312-Drainage Groove; 313-Blade; 32-Shaft Sleeve; 40-Support Plate; 41-First Guide Chamber; 411-Inner Annular Cavity; 412-Outer Annular Cavity; 42-Second Guide Chamber; 43-Through Hole; 44-First Support Plate; 45-Second Support Plate; 46-Water Inlet; 47-Air Blowing Port; 48-Gas Detector; 51-Oil Seal; 52-Sealing Ring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0026] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0027] First Embodiment

[0028] Please refer to Figure 1 This embodiment provides a fan 100, which includes a housing 10, a motor 20, an impeller assembly 30, and a support plate 40. A cavity 11 is provided inside the housing 10. An air inlet 12 and an air outlet 13 are provided on the housing 10. The motor 20 is disposed on one side of the housing 10. The motor 20 includes a motor shaft 22 extending into the cavity 11. The impeller assembly 30 includes an impeller 31. The impeller 31 is disposed within the cavity 11 and fixedly connected to the motor shaft 22, so that the impeller 31 rotates under the drive of the motor 20. The rotation of the impeller 31 drives gas to move from the air inlet 12 to the air outlet 13. It can be understood that exhaust gas enters the cavity 11 from the air inlet 12, the motor 20 drives the impeller 31 to rotate, and the impeller 31 moves the exhaust gas, thereby causing the exhaust gas to be discharged from the air outlet 13.

[0029] In this embodiment, a support plate 40 is fixedly connected between the motor 20 and the housing 10. A guide cavity communicating with the cavity 11 is provided inside the support plate 40. A water inlet 46 and an air outlet 47 communicating with the guide cavity are provided on the support plate 40. Specifically, the housing 10 has an opening at the top, the support plate 40 covers the top of the housing 10, and the motor 20 is fixed above the support plate 40. The support plate 40 supports the motor 20. The motor shaft 22 of the motor 20 passes through the support plate 40 and extends into the cavity 11. By providing a guide cavity inside the support plate 40 and providing a water inlet 46 and an air outlet 47 on the support plate 40, the interior of the fan 100 can be cleaned when the fan 100 is not working. Cleaning water is introduced through the water inlet 46, and the cleaning water flows sequentially through the guide cavity into the cavity 11, cleaning the side walls of the cavity 11 and the impeller 31. After cleaning, nitrogen is introduced through the air outlet 47. The nitrogen passes through the guide cavity into the chamber 11 to purge the impeller 31 and prevent water droplets from remaining on it. When the motor 20 is running normally, exhaust gas enters the chamber 11. At this time, nitrogen is continuously introduced into the guide cavity through the air outlet 47, forming an isolation zone within the guide cavity to prevent the exhaust gas from moving upward and avoid causing powder jamming or corrosion to the motor shaft 22.

[0030] Please refer to Figures 1-3 The support plate 40 has a through hole 43 for the motor shaft 22 to pass through. The flow guiding cavity includes a first flow guiding cavity 41 surrounding the through hole 43 and a second flow guiding cavity 42 connecting the through hole 43 and the first flow guiding cavity 41. The water inlet 46 and the air outlet 47 communicate with the first flow guiding cavity 41. A sealing element is provided between the support plate 40 and the motor shaft 22. The first flow guiding cavity 41, the second flow guiding cavity 42, the through hole 43, and the cavity 11 are connected in sequence.

[0031] Specifically, the support plate 40 is an annular plate. The first guide cavity 41 is annular. The first guide cavity 41 and the through hole 43 are coaxially arranged. Multiple second guide cavities 42 are provided. The multiple second guide cavities 42 connect the inner through hole 43 and the outer first guide cavity 41.

[0032] Optionally, in this embodiment, the second guide cavity 42 is arranged radially along the support plate 40. In other embodiments, the second guide cavity 42 may be arranged at an angle to the radial direction of the support plate 40. As long as clean water or nitrogen can enter the cavity 11 through the first guide cavity 41, the second guide cavity 42, and the through hole 43, the present invention does not limit the position of the second guide cavity 42.

[0033] Optionally, in this embodiment, the flow path of the second guide cavity 42 is a straight line. In other embodiments, the flow path of the second guide cavity 42 can be a curve or a broken line, such as an "S" shape or an "L" shape. As long as clean water or nitrogen can enter the cavity 11 through the first guide cavity 41, the second guide cavity 42 and the through hole 43, the shape of the second guide cavity 42 is not limited in this invention.

[0034] Understandably, in this embodiment, to prevent leakage of cleaning water or nitrogen, a seal is provided between the support plate 40 and the motor 20, and the seal is located at the through hole 43. Cleaning water entering through the inlet 46 will not splash onto the motor 20 above when flowing through the through hole 43. Nitrogen blown in through the air outlet 47 will not leak onto the motor 20 above when flowing through the through hole 43. Furthermore, when exhaust gas enters the cavity 11 from the air inlet 12, nitrogen is continuously blown in through the air outlet 47 to prevent the exhaust gas from rising, while the seal further prevents the exhaust gas from causing powder buildup or corrosion on the motor shaft 22.

[0035] In this embodiment, the sealing element includes an oil seal 51 and a sealing ring 52. The motor 20 includes a motor housing 21 and a motor shaft 22. The oil seal 51 is disposed between the support plate 40 and the motor shaft 22. The sealing ring 52 is disposed between the motor housing 21 and the support plate 40.

[0036] Further, the support plate 40 includes a first support plate 44 and a second support plate 45. The first support plate 44 and the second support plate 45 are stacked and fixedly connected. A first guide groove and a second guide groove are formed on the side of the first support plate 44 near the second support plate 45. A first guide cavity 41 is formed between the first guide groove and the second support plate 45. A second guide cavity 42 is formed between the second guide groove and the second support plate 45. Specifically, the first support plate 44 and the second support plate 45 are fixed together by bolts, and the first support plate 44 and the second support plate 45 can be disassembled to clean the first guide cavity 41 and the second guide cavity 42. In this embodiment, the second support plate 45 is disposed above the outer casing 10. The first support plate 44 is disposed above the second support plate 45. The motor 20 is disposed above the first support plate 44. The oil seal 51 is disposed between the first support plate 44 and the motor shaft 22. The sealing ring 52 is disposed between the first support plate 44 and the motor housing 21. That is, the oil seal 51 is located in the corresponding part of the through hole 43 of the first support plate 44. The corresponding through hole 43 of the second support plate 45 is connected to the second guide cavity 42.

[0037] It is understandable that the clean water entering through the inlet 46 or the nitrogen entering through the air outlet 47 passes through the annular first guide cavity 41 in sequence, and then enters multiple second guide cavities 42 from the first guide cavity 41, and then enters the cavity 11 through the corresponding part of the through hole 43 of the second support plate 45, that is, the lower half of the through hole 43.

[0038] Furthermore, a gas detector 48 is also provided on the support plate 40. The detection port of the gas detector 48 is connected to the first guide cavity 41. Specifically, the gas detector 48 is located on the first support plate 44. It can be understood that the gas detector 48 is used to detect the gas concentration in the annular first guide cavity 41. Specifically, the gas detector 48 is used to detect the exhaust gas concentration. It can be understood that when the fan 100 stops running, nitrogen gas is introduced into the first guide cavity 41 through the stop air outlet 47. The exhaust gas in the cavity 11 enters the first guide cavity 41 sequentially through the through hole 43 and the second guide cavity 42. At this time, the concentration of the exhaust gas can be detected by the gas detector 48. When the fan 100 needs to be turned on, nitrogen gas is blown in again through the air outlet 47 to discharge the exhaust gas into the cavity 11. The power of the motor 20 can be adjusted according to the concentration of the exhaust gas, thereby adjusting the air volume of the fan 100.

[0039] Specifically, in this embodiment, the first guide cavity 41 is an annular cavity 11, which includes an outer annular cavity 412 and an inner annular cavity 411 that are interconnected. The air inlet 47 and the detection port of the gas detector 48 are connected to the outer annular cavity 412. The water inlet 46 is connected to the inner annular cavity 411. Furthermore, the volume of the outer annular cavity 412 is larger than the volume of the inner annular cavity 411.

[0040] Please refer to Figure 1 , Figure 4 and Figure 5 Furthermore, the impeller assembly 30 also includes a bushing 32. The bushing 32 is fixedly connected to the impeller 31. The bushing 32 is sleeved on the motor shaft 22 and fixedly connected to the motor shaft 22. Specifically, the bushing 32 is disposed through the through hole 43 of the support plate 40. A guide cavity is formed between the bushing 32, the seal, and the support plate 40.

[0041] Furthermore, the impeller 31 includes blades 313 and a top plate 311. The top plate 311 is fixedly connected to the side of the bushing 32. The blades 313 are fixed on the top plate 311. A flow channel 312 is provided on the side of the top plate 311 away from the blades 313. The flow channel 312 is arranged radially along the bushing 32. Specifically, the blades 313 are located below the top plate 311. The flow channel 312 is located above the top plate 311. The top plate 311 is disc-shaped, and the flow channel 312 is arranged radially along the top plate 311. When cleaning water is introduced through the inlet 46, the cleaning water flows sequentially through the first guide cavity 41, the second guide cavity 42, and the through hole 43, flows into the top plate 311, and then splashes towards the side wall of the cavity 11 through the flow channel 312 above the top plate 311, cleaning the side wall of the cavity 11 and washing away the dust on the side wall of the cavity 11. Furthermore, during the cleaning of cavity 11, motor 20 can be started to drive impeller 31 to rotate. The cleaning water on top plate 311 moves within drainage channel 312 under centrifugal force, splashes onto the side wall of cavity 11, and flows down along the side wall of cavity 11. After cleaning, nitrogen is blown in through air outlet 47, and motor 20 is turned on to drive impeller 31 to rotate, purifying the inside of cavity 11 and drying drainage channel 312 and cavity 11 to prevent water droplets from remaining on top plate 311 or side wall of cavity 11.

[0042] In this embodiment, the power of the motor 20 can be adjusted to allow the impeller 31 to reach different rotational speeds, enabling the drainage channels 312 on the top plate 311 to clean the inner wall of the cavity 11 to varying degrees. When there is a lot of dust in the cavity 11, the power of the motor 20 is increased to raise the impeller 31 speed and improve cleaning efficiency; when there is less dust in the cavity 11, the power of the motor 20 is decreased to lower the impeller 31 speed and reduce cleaning efficiency. This reduces the energy consumption of the fan 100.

[0043] Understandably, in this embodiment, the air inlet 12 is located at the bottom of the housing, and after cleaning, the cleaning water accumulates at the bottom of the cavity 11. To prevent the cleaning water from being discharged from the air inlet 12, in this embodiment, an annular protrusion 14 facing the inside of the cavity 11 is also provided at the air inlet 12. By providing the annular protrusion 14, a water collection groove is formed at the bottom of the cavity 11. After the cleaning water flows down from the side wall of the cavity 11, it directly enters the water collection groove at the bottom of the cavity 11, preventing the cleaning water from being discharged from the air inlet 12 again.

[0044] Furthermore, the outer casing 10 is also provided with a drain outlet 15 communicating with the cavity 11. Specifically, the drain outlet 15 is located at the bottom of the cavity 11. A drain valve is provided at the drain outlet 15. It can be understood that after the cleaning water has finished cleaning the inside of the cavity 11, the motor 20 is turned on to drive the impeller 31 to rotate, and nitrogen gas is introduced to purge, so that the cleaning water completely falls into the water collection tank below the cavity 11. At this time, the drain outlet 15 can be opened to discharge the introduced cleaning water, which facilitates internal cleaning and waste liquid drainage. In this embodiment, the drain outlet 15 can be connected to an external water tank to facilitate the recycling of the cleaning water.

[0045] In this embodiment, an observation window (not shown) is also provided on the outer casing 10 for observing the water accumulation and powder jamming inside the cavity 11. Furthermore, the observation window is detachably connected to the outer casing 10. When cleaning water and nitrogen cannot effectively clean the inside of the cavity 11, the observation window can be removed for manual cleaning to avoid dust jamming affecting the normal operation of the fan 100.

[0046] To effectively address the corrosion problem of the fan 100, in this embodiment, the casing, support plate 40, and impeller assembly 30 are all made of PVC material. It is understood that using PVC material for the fan 100 not only prevents corrosion but also reduces its weight.

[0047] Second Embodiment

[0048] This embodiment provides a waste gas treatment device, which includes the fan 100 provided in the first embodiment above. The fan 100 is used to move the waste gas within the waste gas treatment device.

[0049] The beneficial effects of the fan 100 of the waste gas treatment equipment provided in this embodiment of the utility model include:

[0050] The exhaust gas treatment equipment of this utility model includes a fan 100 comprising a housing 10, a motor 20, an impeller assembly 30, and a support plate 40. A cavity 11 is provided inside the housing 10. An air inlet 12 and an air outlet 13 are provided on the housing 10. The motor 20 is located on one side of the housing 10. The motor 20 includes a motor shaft 22 extending into the cavity 11. The impeller assembly 30 includes an impeller 31. The impeller 31 is disposed within the cavity 11 and fixedly connected to the motor shaft 22, so that the impeller 31 rotates under the drive of the motor 20. The rotation of the impeller 31 drives gas to move from the air inlet 12 to the air outlet 13. The support plate 40 is fixedly connected between the motor 20 and the housing 10. A guide cavity communicating with the cavity 11 is provided inside the support plate 40. A water inlet 46 and an air blowing port 47 communicating with the guide cavity are provided on the support plate 40. By setting up a guide cavity connecting to the cavity 11, when the fan 100 is not working, clean water is introduced into the cavity 11 through the water inlet 46 to clean the inside of the cavity 11 and prevent dust in the exhaust gas from remaining inside the cavity 11. After the clean water is introduced, nitrogen is introduced through the air outlet 47 to blow the inside, preventing water droplets from remaining on the impeller assembly 30 and quickly drying it. When the fan 100 is started, nitrogen is continuously introduced through the air outlet 47 to form an isolation zone at the guide cavity, preventing exhaust gas from moving upward and avoiding dust accumulation or corrosion of the motor 20. This utility model can clean the inside of the fan 100, prevent dust residue, and also prevent exhaust gas from causing dust accumulation and corrosion of the motor shaft 22, thereby improving the service life of the fan 100.

[0051] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A fan (100) characterized by, The utility model relates to a kind of air blower, including: Housing (10), cavity (11) is provided in the housing (10), air inlet (12) and air outlet (13) are provided on the housing (10); Motor (20), the motor (20) is arranged on the side of the housing (10), the motor (20) includes motor shaft (22) that protrudes into the cavity (11); Impeller assembly (30), the impeller assembly (30) includes impeller (31), the impeller (31) is arranged in the cavity (11), and is fixedly connected with the motor shaft (22), so that the impeller (31) is driven under the rotation of the motor (20), the impeller (31) rotates to drive gas from the air inlet (12) to the air outlet (13) movement; Support plate (40), the support plate (40) is fixedly connected between the motor (20) and the housing (10), the support plate (40) is provided with water inlet (46) and air outlet (47) in the flow guide cavity that is communicated with the cavity (11).

2. The fan (100) of claim 1, characterized in that The support plate (40) is provided with through hole (43) for the motor shaft (22) to pass through, the flow guide cavity includes first flow guide cavity (41) arranged around the through hole (43) and second flow guide cavity (42) communicated with the through hole (43) and the first flow guide cavity (41), the water inlet (46) and the air outlet (47) are communicated with the first flow guide cavity (41), the support plate (40) and the motor (20) are provided with sealing element between, the first flow guide cavity (41), the second flow guide cavity (42), the through hole (43) and the cavity (11) are communicated in sequence.

3. The fan (100) of claim 2, characterized in that The support plate (40) includes first support plate (44) and second support plate (45), the first support plate (44) and the second support plate (45) are arranged in layers and fixedly connected, the first support plate (44) is provided with first flow guide groove and second flow guide groove on the side close to the second support plate (45), the first flow guide groove and the second support plate (45) form the first flow guide cavity (41) between, the second flow guide groove and the second support plate (45) form the second flow guide cavity (42) between.

4. The fan (100) of claim 2, wherein, The support plate (40) is further provided with gas detector (48), and the detection port of the gas detector (48) is communicated with the first flow guide cavity (41).

5. The fan (100) of claim 1, wherein, The impeller assembly (30) further includes shaft sleeve (32), the shaft sleeve (32) and the impeller (31) are fixedly connected, the shaft sleeve (32) is sleeved on the motor shaft (22) and is fixedly connected with the motor shaft (22).

6. The fan (100) of claim 5, characterized in that The impeller (31) comprises blades (313) and a top plate (311), the top plate (311) is fixedly connected to the side of the shaft sleeve (32), the blades (313) are fixed on the top plate (311), and a drainage groove (312) is arranged on the side, away from the blades (313), of the top plate (311) and extends along the radial direction of the shaft sleeve (32).

7. The fan (100) of claim 1, wherein, An annular boss (14) is further arranged at the air inlet (12) and faces the inside of the cavity (11).

8. The fan (100) of claim 1, wherein, A drain port (15) is further arranged on the shell (10) and communicates with the cavity (11).

9. The fan (100) of claim 1, wherein, An observation window is further arranged on the shell (10).

10. An exhaust gas treatment device, characterized by, The fan (100) comprises the fan (100) according to any one of claims 1-9. The fan (100) comprises the fan (100) according to any one of claims 1-9.

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