CN216714747U - Digital display supercharging axial-flow type fire-fighting smoke exhaust fan - Google Patents

Abstract

The utility model discloses a digital-display pressurized axial-flow fire-fighting smoke exhaust fan, comprising a casing, a motor, an exhaust impeller, a diffuser, a pressurizing impeller, a flow meter and a dust-proof cooling mechanism. The diffuser is installed At the air outlet end of the casing, the dust-proof cooling mechanism is installed in the casing, the motor is installed in the dust-proof cooling mechanism, the exhaust impeller and the booster impeller are installed on the rotating shaft in order of airflow direction, and one end of the rotating shaft passes through the coupling It is connected with the output end of the motor, the booster impeller is located in the diffuser, and the two ends of the flowmeter are respectively communicated with the casing and the diffuser through flow pipes. The fire exhaust fan is equipped with a pressurized impeller in the air outlet diffuser of the fan, which can enhance the outlet airflow while the airflow divergence is weakened, so as to prevent the weakened airflow from affecting the fire exhaust effect; the motor is placed in the dust-proof cooling mechanism In order to prevent damage to the motor caused by the high temperature environment and ensure the safe operation of the equipment.

Description

A digital display pressurized axial-flow fire-fighting smoke exhaust fan

technical field

The utility model relates to the technical field of fire-fighting high-temperature smoke exhaust equipment, in particular to a digital display pressurized axial-flow fire-fighting smoke exhaust fan.

Background technique

Axial flow fans are very widely used, that is, the airflow in the same direction as the axis of the fan blades, such as electric fans, air conditioner outdoor fans are axial flow fans. It is called "axial flow" because the gas flows parallel to the fan axis. Axial flow fans are usually used in applications with high flow requirements and low pressure requirements. Axial fans fix the position and move the air. The axial flow fan is mainly composed of the fan impeller and the casing. The structure is simple but the data requirements are very high.

However, the axial flow fan used for fire smoke exhaust is different from the ordinary axial flow fan. The smoke exhaust fan used for fire smoke exhaust is installed in the middle of the fire ventilation duct or at the end of the duct to generate wind pressure to draw away or blow When the flue gas is used, the working temperature is from tens of degrees Celsius to hundreds of degrees Celsius. It requires higher and safer performance, and it is necessary to ensure a continuous, stable and controllable large air volume to ensure timely and effective exhaust gas. in fire control. However, in the prior art, the fire-fighting smoke exhaust axial flow fan basically relies on the rotational speed of the fan to control the air volume and air pressure. When the wind flows out, it is very easy to produce divergence at the outlet, weakening the wind pressure and air volume; Timely feedback and knowledge, the air volume is not easy to be controlled, which greatly affects the control of the fire.

Utility model content

The purpose of this utility model is to provide a digital display supercharged axial-flow fire-fighting smoke exhaust fan, so as to solve the problem that when the wind of the axial-flow fan flows out, it is very easy to produce divergence at the outlet, which reduces the wind pressure and air volume; in addition, the air volume The size cannot be fed back and known in time, and the air volume is not easy to be controlled, which greatly affects the control of the fire.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

A digital-display supercharged axial-flow fire-fighting smoke exhaust fan includes a casing, a motor, an exhaust impeller, a diffuser, a pressurized impeller, a flow meter and a dust-proof cooling mechanism, and the diffuser is installed on the At the air outlet end of the casing, the dust-proof cooling mechanism is installed in the casing, the motor is installed in the dust-proof cooling mechanism, and the exhaust impeller and the booster impeller are installed in sequence in the direction of airflow. On the rotating shaft, one end of the rotating shaft is connected to the output end of the motor through a coupling, the booster impeller is located in the diffuser, and the two ends of the flowmeter are respectively connected to the motor through a flow pipe. The casing communicates with the diffuser.

A further technical solution is that the flow pipe is communicated with the casing and the diffuser respectively through a ring pipe, and a plurality of branch pipes distributed in an annular shape are arranged on the inner side of the ring pipe.

A further technical solution is: the outer peripheral surface of the supercharging impeller is not smaller than the outer peripheral surface of the exhaust impeller.

A further technical solution is: the torsion of the blades on the supercharging impeller is not less than the torsion of the blades on the exhaust impeller.

A further technical solution is: the inclination angle of the blades on the supercharging impeller is not less than the inclination angle of the blades on the exhaust impeller.

A further technical solution is: the casing and the diffuser form a venturi.

A further technical solution is: the dust-proof cooling mechanism includes a heat insulation box, an intake elbow, an exhaust pipe, a fixing plate and a suction impeller, and the heat insulation box is installed in the casing through the fixing plate. , the motor is installed in the heat insulation box, the suction impeller is installed on the output end of the motor, the intake elbow and the exhaust pipe are both installed on the casing, so The air outlet end of the intake elbow is communicated with one end of the heat insulation box, and the air outlet end of the exhaust pipe is communicated with the side surface of the heat insulation box.

A further technical solution is: a limiting ring is arranged on the rotating shaft, and the limiting ring is connected with the inner wall of the diffuser through a plurality of struts.

Compared with the prior art, what the present invention can achieve at least one of the following beneficial effects is:

The utility model proposes a digital-display pressurized axial-flow fire-fighting smoke exhaust fan. The fire-fighting smoke-exhaust fan is an axial-flow fan. A pressurized impeller is arranged in the air outlet diffuser of the fan, which can reduce the air flow divergence. At the same time, the outlet airflow is enhanced to prevent the weakening of the airflow from affecting the fire-fighting exhaust effect; in addition, the fire-fighting exhaust fan is equipped with a dust-proof cooling mechanism for the motor to prevent damage to the motor caused by a higher temperature environment and ensure the safe operation of the equipment .

A flowmeter is set on the fire-fighting smoke exhaust fan, and the casing and the diffuser form a venturi tube. The flowmeter can accurately reflect the size of the air volume and is easy to control.

Description of drawings

Figure 1 is a schematic structural diagram of a digital display supercharged axial-flow fire-fighting smoke exhaust fan of the present invention.

FIG. 2 is a schematic diagram of the connection structure of the ring pipe and the branch pipe of the present invention.

Reference numerals: 1, casing; 2, motor; 3, exhaust impeller; 4, diffuser; 5, booster impeller; 6, flow meter; 7, dust-proof cooling mechanism; 71, heat insulation box; 72 , intake elbow; 73, exhaust pipe; 74, fixed plate; 75, suction impeller; 8, flow pipe; 9, shaft; 10, ring pipe; 11, branch pipe; 12, coupling; 13, limit bit ring; 14, strut.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments of the present invention are a part of the embodiments of the present invention, but not all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that the embodiments of the present invention and the features of the embodiments can be combined with each other unless there is conflict.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that is usually placed when the utility model product is used, or the orientation or positional relationship that is commonly understood by those skilled in the art, It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first", "second", etc. are only used to differentiate the description and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arrangement", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1:

The present embodiment is shown in FIG. 1 and FIG. 2 , a digital display pressurized axial-flow fire-fighting smoke exhaust fan. The structure of the utility model is as follows: including a casing 1, a motor 2, an exhaust impeller 3, and a diffuser 4 (conical cylindrical shape), booster impeller 5, flow meter 6 and dust-proof cooling mechanism 7, the diffuser 4 is installed on the air outlet end of the casing 1, the dust-proof cooling mechanism 7 is installed in the casing 1, the motor 2 Installed in the dust-proof cooling mechanism 7, the air exhaust impeller 3 and the supercharging impeller 5 are installed on the rotating shaft 9 in turn in the direction of air flow. One end of the rotating shaft 9 is connected to the output end of the motor 2 through the coupling 12, and the supercharging impeller 5 is located at In the diffuser 4 , both ends of the flow meter 6 are respectively communicated with the casing 1 and the diffuser 4 through the flow pipes 8 .

The working process of the utility model is as follows: the diffuser 4 is installed on one end of the casing 1, and is mainly used for air outlet to prevent the excessive loss of air volume and pressure caused by sudden changes in the airflow, and a pressurized impeller is installed on the diffuser 4. 5. Using the same motor 2 to drive the exhaust impeller 3 and the booster impeller 5 at the same time, the exhaust impeller 3 generates wind pressure, and the booster impeller 5 at the air outlet can enhance the outlet airflow while the airflow divergence is weakened. To prevent the weakening of the air flow from affecting the fire-fighting exhaust; in addition, the fire-fighting exhaust fan is provided with a dust-proof cooling mechanism 7 for the motor to prevent damage to the motor caused by a higher temperature environment and ensure the safe operation of the equipment. The casing 1 and the diffuser 4 form a venturi tube, and the flow meter can accurately reflect the air volume, which is convenient for control.

Preferably, the flow pipe 8 is respectively communicated with the casing 1 and the diffuser 4 through a ring pipe 10 , and a plurality of branch pipes 11 distributed in an annular shape are arranged on the inner side of the ring pipe 10 .

A plurality of branch pipes 11 can simultaneously intake or exhaust air at multiple points at the same time, which can improve the accuracy with which the flow meter 6 collects the air volume of the fire-fighting smoke exhaust fan.

Preferably, the outer peripheral surface of the supercharging impeller 5 is not smaller than the outer peripheral surface of the exhaust impeller 3 . The twist of the blades on the supercharging impeller 5 is not less than the twist of the blades on the exhaust vane 3 . The inclination angle of the blades on the supercharging impeller 5 is not less than the inclination angle of the blades on the exhaust impeller 3 .

The diameter of the supercharger impeller 5 is larger than the diameter of the exhaust impeller 3; the twist degree of the blades on the supercharger impeller 5 is not less than the twist degree of the blades on the exhaust blade 3; in the circumferential direction, the inclination angle of the blades on the supercharger impeller 5 is not less than that of the exhaust blade 3. The inclination angle of the blades on the impeller 3. All of these measures can ensure that the wind pressure and air volume generated by the supercharging impeller 5 are greater than the wind pressure and air volume generated by the exhaust air impeller 3, and thus play a role in supercharging.

Embodiment 2:

In the second embodiment, the dust-proof cooling mechanism 7 includes a heat insulation box 71 , an intake elbow 72 , an exhaust pipe 73 , a fixing plate 74 and a suction impeller 75 , and the heat insulation box 71 is installed in the casing 1 through the fixing plate 74 . , the motor 2 is installed in the heat insulation box 71, the suction impeller 75 is installed on the output end of the motor 2, the intake elbow 72 and the exhaust pipe 73 are both installed on the casing 1, and the outlet end of the intake elbow 72 It communicates with one end of the heat insulation box 71 , and the outlet end of the exhaust pipe 73 communicates with the side surface of the heat insulation box 71 .

The motor 2 is installed in the heat insulation box 71 made of heat insulating material, the suction impeller 75 will generate negative pressure in the heat insulation box 71 under the drive of the motor 2, and the cold air from the outside will enter the insulation box 71 through the intake elbow 72. In the hot box 71, the hot air in the heat insulation box 71 is squeezed out through the exhaust pipe 73 to air-cool the motor 2, which effectively reduces the damage to the motor 2 caused by the high temperature working environment faced by the fire-fighting smoke exhaust fan.

Preferably, a limiting ring 13 is provided on the rotating shaft 9 , and the limiting ring 13 is connected to the inner wall of the diffuser 4 through a plurality of struts 14 .

The swing of the rotating shaft 9 is prevented, and the stable operation of the exhaust impeller 3 and the supercharging impeller 5 is ensured.

Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features. Within the spirit and principle of the present utility model, any modifications, equivalent replacements, improvements, etc. made shall be included within the protection scope of the present utility model.

Claims (8)

1. A digital-display supercharged axial-flow fire-fighting smoke exhaust fan, characterized in that: comprising a casing (1), a motor (2), an exhaust impeller (3), a diffuser (4), a booster impeller (5), a flow meter (6) and a dust-proof cooling mechanism (7), the diffuser (4) is installed on the air outlet end of the casing (1), and the dust-proof cooling mechanism (7) is installed In the casing (1), the motor (2) is installed in the dust-proof cooling mechanism (7), and the airflow directions of the exhaust impeller (3) and the booster impeller (5) are installed in sequence Installed on a rotating shaft (9), one end of the rotating shaft (9) is connected to the output end of the motor (2) through a coupling (12), and the booster impeller (5) is located in the diffuser ( 4), the two ends of the flow meter (6) are respectively communicated with the casing (1) and the diffuser (4) through a flow pipe (8). 2. A digital-display pressurized axial-flow fire-fighting smoke exhaust fan according to claim 1, characterized in that: the flow pipe (8) is connected to the casing (1) through a ring pipe (10), respectively. In communication with the diffuser (4), a plurality of branch pipes (11) distributed in an annular shape are arranged on the inner side of the ring pipe (10). 3. A digital-display supercharged axial-flow fire-fighting smoke exhaust fan according to claim 1, characterized in that: the outer peripheral surface of the supercharging impeller (5) is not smaller than the diameter of the exhaust impeller (3). peripheral surface. 4. A digital-display supercharged axial-flow fire-fighting smoke exhaust fan according to claim 1, characterized in that: the torsion of the blades on the supercharger impeller (5) is not less than that of the exhaust impeller (3) ) on the blade twist. 5. A digital-display supercharged axial-flow fire-fighting smoke exhaust fan according to claim 1, characterized in that: the inclination angle of the blades on the supercharger impeller (5) is not less than that of the exhaust impeller (3) ) the angle of inclination of the upper blade. 6 . The digital-display pressurized axial-flow fire-fighting smoke exhaust fan according to claim 1 , wherein the casing ( 1 ) and the diffuser ( 4 ) form a Venturi tube. 7 . 7. A digital-display pressurized axial-flow fire-fighting smoke exhaust fan according to claim 1, characterized in that: the dust-proof cooling mechanism (7) comprises a heat insulation box (71), an intake elbow ( 72), an exhaust pipe (73), a fixing plate (74) and a suction impeller (75), the heat insulation box (71) is installed in the casing (1) through the fixing plate (74), The motor (2) is installed in the heat insulation box (71), the suction impeller (75) is installed on the output end of the motor (2), and the intake elbow (72) is connected to the The exhaust pipes (73) are all installed on the casing (1), the air outlet end of the intake elbow (72) is communicated with one end of the heat insulation box (71), and the exhaust pipes ( The gas outlet end of 73) communicates with the side surface of the heat insulation box (71). 8. A digital-display pressurized axial-flow fire-fighting smoke exhaust fan according to claim 1, characterized in that: a limit ring (13) is arranged on the rotating shaft (9), and the limit ring (13) ) is connected to the inner wall of the diffuser (4) through a plurality of struts (14).

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