CN218669921U

CN218669921U - Axial dust removing impeller structure of fan

Info

Publication number: CN218669921U
Application number: CN202223355854.0U
Authority: CN
Inventors: 宋彦鹏; 陈阳; 薛梦晓; 陈林鑫
Original assignee: Huzhou Ruichen Environmental Protection Technology Co ltd
Current assignee: Huzhou Ruichen Environmental Protection Technology Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-03-21
Anticipated expiration: 2032-12-14

Abstract

The utility model discloses a fan axial deashing impeller structure, set up a plurality of blades between head disk and head disk including head disk, head disk and circumference interval, the head disk middle part is provided with the wheel hub subassembly, and each blade back is provided with a plurality of axial turbulence pipes along radial direction interval, the internal surface of head disk is provided with a plurality of radial intake pipes, and each blade corresponds with a radial intake pipe, and a plurality of axial turbulence pipes on each radial intake pipe and the blade that corresponds switch on, and each radial intake pipe has the high-pressure air inlet who stretches out the head disk surface, and each radial intake pipe is provided with a plurality of axial nozzles that are used for facing to axial turbulence pipe and blade back juncture along radial direction interval, and the high-pressure gas who comes in by high-pressure air inlet is via axial nozzle blowout.

Description

Axial dust removing impeller structure of fan

Technical Field

The utility model relates to a mechanical ventilation equipment technical field, in particular to fan axial deashing impeller structure.

Background

The centrifugal ventilator is a general mechanical equipment for air supply or air draft, and can be widely applied to various industries needing steel, cement, chemical engineering and the like. The centrifugal fan impeller is the heart of a fan, wherein the impeller is used for conveying dusty gas in some occasions, as shown in figure 1, the impeller in the prior art is not provided with an ash cleaning structure, dust can be deposited on the impeller blades 1 after the impeller blades operate for a period of time, the thickness is increased after the impeller blades operate for a long time, the insecurity of the impeller is increased, part of dust falls off in severe cases, the fan vibrates to be enlarged, field customers are prone to headache, and the improvement of the dust deposition resistance of the fan impeller is urgent and important.

At present, a Chinese patent granted publication No. CN2679404Y discloses a blade for preventing dust deposition and scale formation, and although the patent can play a role of taking away dust in blade airflow, the trend of the dust airflow is not to take away the dust on the back of the blade.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fan axial deashing impeller structure to the above-mentioned not enough and defect of prior art to solve above-mentioned problem.

The utility model provides a technical problem can adopt following technical scheme to realize:

the utility model provides a fan axial deashing impeller structure, includes that front bezel, well dish and circumference interval set up a plurality of blades between front bezel and well dish, the well dish middle part is provided with wheel hub subassembly, its characterized in that, and each blade back is provided with a plurality of axial turbulence pipes along radial direction interval, the internal surface of front bezel is provided with a plurality of radial intake pipes, and each blade corresponds with a radial intake pipe, and each radial intake pipe switches on with a plurality of axial turbulence pipes on the blade that corresponds with it, and each radial intake pipe has the high-pressure air inlet who stretches out the front bezel surface, and each radial intake pipe is provided with a plurality of axial nozzles that are used for facing axial turbulence pipe and blade back juncture along radial direction interval, and the high-pressure gas who comes in by high-pressure air inlet spouts via the axial nozzle.

In a preferred embodiment of the present invention, a filter screen is disposed on the high pressure air inlet.

In a preferred embodiment of the present invention, the high-pressure air inlet is configured in a bell mouth structure.

In a preferred embodiment of the present invention, the outlet direction of the axial nozzle is set to a throat structure.

In a preferred embodiment of the present invention, the axial turbulent flow tube is a circular tube, a trapezoidal tube, a square tube, or a triangular tube.

In a preferred embodiment of the present invention, the hub assembly located inside the impeller is provided with a conical air guide sleeve, so that the gas coming from the impeller air inlet can be guided to the blades, and the gas is prevented from directly impacting the impeller center plate.

In a preferred embodiment of the present invention, the hub assembly is provided with an impeller positioning plate via a fastener.

In a preferred embodiment of the present invention, the radial air inlet pipe is fixed on the inner surface of the front plate, the radial air inlet pipe is provided with a plurality of insertion holes along the length direction, one end of the axial turbulent flow pipe is connected with the insertion holes, and the other end is connected with the middle plate.

In a preferred embodiment of the present invention, the other end of the axial turbulent flow tube connected to the middle disc is provided with a pipe plug.

Since the technical scheme as above is used, the utility model discloses a set up axial turbulence pipe at the blade back, gaseous when getting into the blade back through axial turbulence pipe, can produce the vortex phenomenon of air current for the air current state at the blade back changes, and the blade back can be kept away from to air current and dust, thereby improves the deposition problem of impeller. Moreover, high-pressure gas outside the impeller enters from the high-pressure gas inlet and is sprayed out through the axial nozzle to blow away all dust on the back of the blade, so that the aim of comprehensively and automatically cleaning the blade is fulfilled, and power and equipment do not need to be provided from the outside. The utility model discloses reduced the stop frequency that the impeller deposition caused, made the impeller vibration steady, increased the security of fan operation, increased impeller life, saved the electric energy, reduced the cost that the enterprise used the fan.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a prior art impeller.

Fig. 2 is a schematic structural diagram of an embodiment of the present invention.

Fig. 3 is an enlarged view at I of fig. 2.

Fig. 4 is a side view of fig. 2 (with the front plate omitted).

FIG. 5 is a schematic structural view of the dust-collecting blind spot of FIG. 2.

Fig. 6 is a partially enlarged view at I of fig. 5.

Fig. 7 is a schematic view of the air flow profile of fig. 2 in operation.

Fig. 8 is an enlarged view at I of fig. 7.

Fig. 9 is a schematic structural diagram of an embodiment of the present invention without a front plate.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further explained below.

Referring to fig. 2 to 9, an axial ash removal impeller structure of a fan comprises a front disk 100, a middle disk 200 and a plurality of blades 300 arranged between the front disk 100 and the middle disk 200 at intervals in the circumferential direction. The middle of the middle plate 200 is provided with a hub assembly 400, and the hub assembly 400 is mounted on the middle of the middle plate 200 by a fastener 410. The impeller positioning plate 420 is arranged on the hub assembly 400 through a fastening member 430, and a conical air guide sleeve 440 is arranged at one end of the hub assembly 400 facing the air inlet, so that air entering from the air inlet of the impeller can be guided to the blades 300, and the air is prevented from directly impacting the impeller center plate 200.

The back surface 301 of each blade 300 is provided with a plurality of axial turbulence pipes 500 at intervals along the radial direction. In this embodiment, the axial turbulent flow tube 500 may be a circular tube, a trapezoidal tube, a square tube, or a triangular tube, and the axial turbulent flow tube 500 in this embodiment is a circular tube, but may also be a solid cylinder.

The inner surface 101 of the front disk 100 is provided with a plurality of radial air inlet pipes 600, each vane 300 corresponds to one radial air inlet pipe 600, and each radial air inlet pipe 600 is communicated with a plurality of axial turbulent flow pipes 500 on the corresponding vane 300. Preferably, the radial air inlet pipe 600 is welded and fixed on the inner surface 101 of the front disc 100, the radial air inlet pipe 600 is provided with a plurality of insertion holes 601 at intervals along the length direction, one end 501 of the axial turbulent flow pipe 500 is hermetically connected and welded with the insertion holes 601, the other end 502 of the axial turbulent flow pipe 500 is welded and fixed with the hole 201 on the middle disc 200, and the other end 502 of the axial turbulent flow pipe 500 connected with the middle disc 200 is provided with a pipe plug 503. Each radial air inlet pipe 600 is provided with a high-pressure air inlet 610 extending out of the outer surface 102 of the front disc 100, a plurality of axial nozzles 620 are arranged at intervals along the radial direction of each radial air inlet pipe 600 and used for facing the junction L of the axial turbulent flow pipe 500 and the back surface 301 of the blade, and high-pressure air entering from the high-pressure air inlet 610 is sprayed out through the axial nozzles 620. The outlet direction of the axial nozzle 620 is set to be a necking structure 621, which is beneficial to increasing the gas ejection pressure.

The high pressure air inlet 610 in this embodiment is provided with a strainer 611 to prevent foreign matters from entering the axial turbulent flow tube 500 and the radial air inlet tube 600. The high pressure air inlet 610 is arranged in a horn mouth structure, so that air can be conveniently introduced.

The working principle of the utility model is as follows:

when the fan is operated, the peripheral region of the impeller front disk 100 is a high pressure region, and the back region of the blade 300 is a low pressure region, as shown in fig. 7 and 8. When the impeller rotates, when gas in the impeller enters the back of the blade and passes through the axial turbulent flow pipe 500, the turbulent flow phenomenon of the gas flow can be generated, so that the gas flow state at the back of the blade is changed, and the gas flow and dust can be far away from the back 301 of the blade, thereby improving the dust deposition problem of the impeller. Moreover, high-pressure gas outside the impeller enters from the high-pressure gas inlet 610 and is sprayed out through the axial nozzle 620, the airflow sprayed out from the axial nozzle 620 is used for cleaning dust possibly existing at the junction L between the axial flow-disturbing pipe 500 and the back surface of the blade, and under the dual ash cleaning action of the axial nozzle 620 and the axial flow-disturbing pipe, all the dust on the back surface 301 of the blade is blown away, so that the purpose of full-surface automatic cleaning of the blade is achieved, and power and equipment do not need to be provided from the outside. The utility model discloses reduce the shut down frequency that the impeller deposition caused, made impeller vibration steady, increased the security of fan operation, increased impeller life, saved the electric energy, reduced the cost that the enterprise used the fan.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a fan axial deashing impeller structure, includes that front bezel, well dish and circumference interval set up a plurality of blades between front bezel and well dish, the well dish middle part is provided with wheel hub subassembly, its characterized in that, and each blade back is provided with a plurality of axial turbulence pipes along radial direction interval, the internal surface of front bezel is provided with a plurality of radial intake pipes, and each blade corresponds with a radial intake pipe, and each radial intake pipe switches on with a plurality of axial turbulence pipes on the blade that corresponds with it, and each radial intake pipe has the high-pressure air inlet who stretches out the front bezel surface, and each radial intake pipe is provided with a plurality of axial nozzles that are used for facing axial turbulence pipe and blade back juncture along radial direction interval, and the high-pressure gas who comes in by high-pressure air inlet spouts via the axial nozzle.

2. A fan axial dust cleaning impeller structure as claimed in claim 1, wherein the high pressure air inlet is provided with a filter screen.

3. A fan axial dust cleaning impeller structure as claimed in claim 1, wherein the high pressure air inlet is configured in a bell mouth configuration.

4. A fan axial cleaning impeller structure as claimed in claim 1, wherein the outlet direction of the axial nozzle is set to a throat structure.

5. The axial dust removing impeller structure of claim 1, wherein the axial turbulent flow tube is a circular tube, a trapezoidal tube, a square tube or a triangular tube.

6. A fan axial dust cleaning impeller structure as claimed in claim 1, wherein the hub assembly inside the impeller is provided with a conical shroud so that the air coming in from the air inlet of the impeller can be guided to the blades to avoid direct frontal impact of the air on the impeller center disk.

7. A fan axial dust cleaning impeller structure as claimed in claim 1, wherein the hub assembly is provided with an impeller positioning plate by a fastener.

8. A fan axial dust removing impeller structure as claimed in claim 1, wherein the radial air inlet pipe is fixed to an inner surface of the front disk, the radial air inlet pipe is provided with a plurality of insertion holes at intervals along a length direction, one end of the axial turbulent flow pipe is connected to the insertion holes, and the other end of the axial turbulent flow pipe is connected to the middle disk.

9. The axial dust removing impeller structure of the fan as claimed in claim 8, wherein the other end of the axial turbulent flow pipe connected with the middle disk is provided with a pipe plug.