CN212744390U

CN212744390U - High-pressure centrifugal ventilator

Info

Publication number: CN212744390U
Application number: CN202021246296.2U
Authority: CN
Inventors: 刘亮亮; 孙华磊
Original assignee: Wuxi Liangda Machinery Technology Co ltd
Current assignee: Wuxi Liangda Machinery Technology Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-03-19
Anticipated expiration: 2030-07-01

Abstract

The utility model discloses a high pressure centrifugal fan, concretely relates to ventilation blower field, including equipment base, fan casing and driving motor, the fan casing with) the bottom and the top surface fixed connection of equipment base, air inlet and gas outlet have been seted up in the outside of fan casing, and one side fixed mounting of fan casing has reversal drive mechanism, and reversal drive mechanism's output fixed mounting has the air inlet paddle leaf and the centrifugal paddle leaf that are located fan casing inside, and the air inlet paddle leaf is close to one side of air inlet, and reversal drive mechanism's input fixedly connected with shaft coupling. The utility model discloses a set up two paddle mechanisms, utilize the paddle of admitting air and centrifugal paddle structure to realize a large amount of admitting air and the centrifugal discharge of air current respectively, the paddle of admitting air produces the high nip in centrifugal fan's inside for the leading-in of increase air current offsets the air resistance, and inhales the noise that the air current is steady more and can effectively reduce the air current and get into, improves centrifugal fan's practicality.

Description

High-pressure centrifugal ventilator

Technical Field

The utility model relates to a ventilation blower technical field, more specifically says, the utility model specifically is a high-pressure centrifugal fan.

Background

The centrifugal ventilator mainly comprises an impeller, a casing, a shaft and other parts, wherein the impeller is a main acting part for generating wind pressure and transmitting energy; transferring torque; the shaft is provided with and fixes the impeller and is connected with the motor; the centrifugal ventilator is mainly used for increasing the gas pressure and discharging the gas by means of the input mechanical energy, and is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and draught of boilers and industrial furnaces, cooling and ventilation of gas conditioning equipment and household electrical equipment and the like.

However, the conventional centrifugal ventilator mostly adopts a large-air-port design for increasing the air volume, most of air pressure is reduced while the air volume is increased, so that the pumping air pressure of the centrifugal ventilator is far smaller than the pumping pressure of the air pump, and effective ventilation cannot be achieved in ventilation work and remote ventilation with pressure difference.

It is therefore desirable to provide a high pressure centrifugal ventilator.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides a high pressure centrifugal fan, through setting up two paddle mechanisms, utilize air inlet paddle and centrifugal paddle structure to realize a large amount of the admitting air and the centrifugal discharge of air current respectively, air inlet paddle produces the high nip in centrifugal fan's inside, make the leading-in of increase air current, and utilize reversal drive mechanism to realize air inlet paddle and centrifugal paddle's coaxial drive, inhale the air current and pump out the dispersion to different work paddle with the air current, can effectively improve energy utilization when reducing the windage and improving air pressure, in order to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high-pressure centrifugal ventilator comprises an equipment base, a fan shell and a driving motor, wherein the bottom ends of the fan shell and the driving motor are fixedly connected with the top surface of the equipment base, an air inlet is arranged on one side of the fan shell, an air outlet is arranged on the side surface of the fan shell, a reverse transmission mechanism is fixedly arranged on one side of the fan shell, an air inlet paddle and a centrifugal paddle which are positioned in the fan shell are fixedly arranged at the output end of the reverse transmission mechanism, the input end of the reverse rotation transmission mechanism is fixedly connected with a coupler, the other end of the coupler is fixedly connected with the output end of the driving motor, one side of the centrifugal paddle is fixedly provided with a rectifying disc, the inside of air inlet paddle and centrifugal paddle is fixed respectively and has been cup jointed first pivot and second pivot, the second pivot rotates to cup joint in the outside of first pivot.

In a preferred embodiment, the reverse rotation transmission mechanism comprises a gear box, transmission teeth are rotatably mounted on the inner wall of the gear box, driving teeth located inside the gear box are fixedly sleeved on the outer side of the first rotating shaft, reverse rotation teeth located inside the gear box are fixedly mounted on the end portion of the second rotating shaft, and two sides of the transmission teeth are meshed with the gear box and the reverse rotation teeth.

In a preferred embodiment, the drive teeth and the counter teeth are of the same size, and the drive teeth, the counter teeth and the transmission teeth are of a bevel gear structure.

In a preferred embodiment, a second rotating shaft groove is formed in the inner side of the centrifugal blade, the centrifugal blade is fixedly sleeved on the outer side of the second rotating shaft through the second rotating shaft groove, one end of the first rotating shaft penetrates through the inner portions of the second rotating shaft and the second rotating shaft groove and is fixedly connected with the side face of the air inlet blade, a stabilizing shaft bracket is fixedly mounted on the inner side of the air inlet, and the end portion of the first rotating shaft is rotatably connected with one side of the stabilizing shaft bracket.

In a preferred embodiment, the air intake blade is of a spiral fan blade structure, and the surface of the centrifugal blade is provided with a plurality of arc-shaped valve leaflets and is distributed in the circumferential direction.

In a preferred embodiment, a rectifying plate located between the air inlet paddle and the centrifugal paddle is fixedly mounted on the inner side of the fan casing, the peripheral side of the rectifying plate is attached to the inner wall of the fan casing, a plurality of air holes are formed in the surface of the rectifying plate and are uniformly distributed, and the diameter of each air hole ranges from 1 cm to 2 cm.

In a preferred embodiment, a balancing weight is arranged inside the equipment base, a plurality of shock absorption rubber blocks are fixedly attached to the bottom surface of the equipment base, and the bottom surface of the reverse rotation transmission mechanism is fixedly connected with the top surface of the equipment base.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a set up two paddle mechanisms, utilize air inlet paddle and centrifugal paddle structure to realize respectively that a large amount of air intakes and the centrifugation of air current are discharged, the air inlet paddle produces the high nip in centrifugal fan's inside for increase the leading-in of air current, offset the air inlet resistance, and inhale the air current more steadily can effectively reduce the noise that the air current got into, improve centrifugal fan's practicality;

2. the utility model discloses a set up coaxial reversal system, utilize reversal drive mechanism to realize the coaxial drive of air inlet paddle leaf and centrifugal paddle leaf, inhale the air current and pump the dispersion with the air current and to different work paddle leaf, can effectively improve energy utilization when reducing the windage and improving air pressure, reach bigger air supply volume under the same power.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is the structural schematic diagram of the centrifugal fan of the present invention.

Fig. 3 is a schematic structural view of the air inlet blade and the centrifugal blade of the present invention.

Fig. 4 is a schematic structural view of the reverse transmission mechanism of the present invention.

Fig. 5 is a schematic structural view of the centrifugal paddle blade of the present invention.

The reference signs are: 1. an equipment base; 2. a fan housing; 3. an air intake paddle; 4. a centrifugal paddle; 5. a reverse rotation transmission mechanism; 6. a drive motor; 7. a coupling; 8. a first rotating shaft; 9. a second rotating shaft; 21. an air inlet; 22. an air outlet; 211. stabilizing the shaft bracket; 41. a rectifying disc; 51. a gear case; 52. a drive tooth; 53. reversing the teeth; 54. a transmission gear; 91. a second rotary shaft groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in the attached figures 1-5, a high pressure centrifugal ventilator comprises an equipment base 1, a blower casing 2 and a driving motor 6, wherein the bottom ends of the blower casing 2 and the driving motor 6 are fixedly connected with the top surface of the equipment base 1, one side of the blower casing 2 is provided with an air inlet 21, the side surface of the blower casing 2 is provided with an air outlet 22, one side of the blower casing 2 is fixedly provided with a reverse transmission mechanism 5, the output end of the reverse transmission mechanism 5 is fixedly provided with an air inlet blade 3 and a centrifugal blade 4 which are positioned inside the blower casing 2, the air inlet blade 3 is close to one side of the air inlet 21, the input end of the reverse transmission mechanism 5 is fixedly connected with a coupler 7, the other end of the coupler 7 is fixedly connected with the output end of the driving motor 6, one side of the centrifugal blade 4 is fixedly provided with a rectifying disc 41, the insides of the air inlet blade 3, the second rotating shaft 9 is rotatably sleeved on the outer side of the first rotating shaft 8.

The implementation mode is specifically as follows: by arranging the double-blade mechanism, a large amount of air inflow and centrifugal discharge of air flow are respectively realized by utilizing the structures of the air inlet blade 3 and the centrifugal blade 4, and the air inlet blade 3 generates a high-pressure area in the centrifugal fan, so that the introduction of the air flow is increased, the air inlet resistance is counteracted, the air flow is more stably sucked, the noise of the air flow entering can be effectively reduced, and the practicability of the centrifugal fan is improved; additionally, the utility model discloses a set up coaxial reversal system, utilize reversal drive mechanism 5 to realize the coaxial drive of air inlet paddle leaf 3 and centrifugal paddle leaf 4, inhale the air current with the air current pump dispersion to different work paddle leaf, can effectively improve energy utilization when reducing the windage and improving airflow pressure, reach bigger air supply volume under the same power.

The reverse rotation transmission mechanism 5 comprises a gear box 51, transmission teeth 54 are rotatably mounted on the inner wall of the gear box 51, driving teeth 52 located inside the gear box 51 are fixedly sleeved on the outer side of the first rotating shaft 8, reverse rotation teeth 53 located inside the gear box 51 are fixedly mounted on the end portion of the second rotating shaft 9, two sides of the transmission teeth 54 are meshed with the gear box 51 and the reverse rotation teeth 53, and coaxial reverse rotation of the air inlet blades 3 and the centrifugal blades 4 is achieved.

The driving teeth 52 and the reverse teeth 53 have the same specification and size, and the driving teeth 52, the reverse teeth 53 and the transmission teeth 54 are of a conical gear structure, so that the rotating speeds of the air inlet blades 3 and the centrifugal blades 4 are the same.

Wherein, second pivot groove 91 has been seted up to centrifugal paddle 4's inboard, centrifugal paddle 4 passes through the fixed outside of cup jointing in second pivot 9 of second pivot groove 91, the inside of second pivot 9 and second pivot groove 91 and air inlet paddle 3's side fixed connection are run through to the one end of first pivot 8, the inboard fixed mounting of air inlet 21 has stabilizer shaft frame 211, the tip of first pivot 8 rotates with one side of stabilizer shaft frame 211 to be connected, improve air inlet paddle 3 and centrifugal paddle 4's rotational stability.

Wherein, the air inlet paddle 3 is a spiral fan blade structure, the surface of the centrifugal paddle 4 is provided with a plurality of arc valve blades which are distributed in the circumferential direction, and air inlet and centrifugal booster pump are respectively carried out.

Wherein, the inboard fixed mounting of fan casing 2 has the cowling panel that is located between air inlet blade 3 and centrifugal paddle 4, and the week side of cowling panel is laminated with the inner wall of fan casing 2 mutually, and the surface of cowling panel is seted up a plurality of bleeder vents and evenly distributed, and the diameter size scope of bleeder vent is 1-2cm, is favorable to producing high-pressure air cavity around centrifugal paddle 4.

Wherein, the inside of equipment base 1 is equipped with the balancing weight, and the fixed a plurality of cushion gum pieces that have pasted in bottom surface of equipment base 1, and the bottom surface of reversal drive mechanism 5 and the top surface fixed connection of equipment base 1 improve device stability, reduce noise at work.

The utility model discloses the theory of operation:

the first step is as follows: when the device is installed and used on a machine, the end part of the air inlet 21 is ensured to have no impurities, blocking and inhalable particle impurities, and then the device can work;

a second step; under the drive of the driving motor 6, the first rotating shaft 8 and the second rotating shaft 9 are reversely rotated through the transmission between the driving teeth 52 and the reverse teeth 53 inside the reverse transmission mechanism 5, so that the air inlet paddle 3 and the centrifugal paddle 4 are respectively driven to reversely rotate, under the rotation motion of the air inlet paddle 3, air flow enters the fan shell 2 from the air inlet 21, a pressurized air cavity is formed inside the fan shell 2, and after a large amount of air flow does work through the high-speed rotation of the centrifugal paddle 4, centrifugal force is generated and the air flow is sent out from the air outlet 22 along the inner wall of the fan shell 2 at a high speed, so that the large air volume is pumped out.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high-pressure centrifugal fan, includes equipment base (1), fan casing (2) and driving motor (6), the bottom of fan casing (2) and driving motor (6) and the top surface fixed connection of equipment base (1), air inlet (21) have been seted up to one side of fan casing (2), gas outlet (22), its characterized in that have been seted up to the side of fan casing (2): one side fixed mounting of fan casing (2) has reversal drive mechanism (5), the output fixed mounting of reversal drive mechanism (5) has air inlet paddle (3) and centrifugal paddle (4) that are located fan casing (2) inside, air inlet paddle (3) are close to one side of air inlet (21), the input fixedly connected with shaft coupling (7) of reversal drive mechanism (5), the other end of shaft coupling (7) and the output fixed connection of driving motor (6), one side fixed mounting of centrifugal paddle (4) has cowling panel (41), the inside of air inlet paddle (3) and centrifugal paddle (4) is fixed respectively and has been cup jointed first pivot (8) and second pivot (9), second pivot (9) rotate and cup joint in the outside of first pivot (8).

2. A high pressure centrifugal fan according to claim 1, wherein: the reversing transmission mechanism (5) comprises a gear box (51), transmission teeth (54) are installed on the inner wall of the gear box (51) in a rotating mode, driving teeth (52) located inside the gear box (51) are fixedly sleeved on the outer side of the first rotating shaft (8), reversing teeth (53) located inside the gear box (51) are fixedly installed on the end portion of the second rotating shaft (9), and the two sides of the transmission teeth (54) are meshed with the gear box (51) and the reversing teeth (53).

3. A high pressure centrifugal fan according to claim 2, wherein: the driving teeth (52) and the reverse rotation teeth (53) are identical in specification and size, and the driving teeth (52), the reverse rotation teeth (53) and the transmission teeth (54) are of a conical gear structure.

4. A high pressure centrifugal fan according to claim 1, wherein: second pivot groove (91) have been seted up to the inboard of centrifugal paddle (4), centrifugal paddle (4) are through the fixed outside of cup jointing in second pivot (9) in second pivot groove (91), the one end of first pivot (8) runs through the inside of second pivot (9) and second pivot groove (91) and the side fixed connection of air inlet paddle (3), the inboard fixed mounting of air inlet (21) has stabilizer shaft bracket (211), the tip of first pivot (8) is rotated with one side of stabilizer shaft bracket (211) and is connected.

5. A high pressure centrifugal fan according to claim 1, wherein: the air inlet paddle (3) is of a spiral fan blade structure, and a plurality of arc valve blades are arranged on the surface of the centrifugal paddle (4) and distributed in the circumferential direction.

6. A high pressure centrifugal fan according to claim 1, wherein: the inboard fixed mounting of fan casing (2) has the cowling panel that is located between air intake paddle (3) and centrifugal paddle (4), the week side of cowling panel is laminated with the inner wall of fan casing (2) mutually, a plurality of bleeder vents and evenly distributed have been seted up on the surface of cowling panel, the diameter size scope of bleeder vent is 1-2 cm.

7. A high pressure centrifugal fan according to claim 1, wherein: the inside of equipment base (1) is equipped with the balancing weight, the fixed a plurality of cushion gum pieces that have pasted in bottom surface of equipment base (1), the bottom surface of reversal drive mechanism (5) and the top surface fixed connection of equipment base (1).