CN216342873U - Explosion-proof centrifugal fan - Google Patents

Abstract

The utility model discloses an explosion-proof centrifugal fan, and belongs to the technical field of centrifugal fans. An explosion-proof centrifugal fan comprises a placing frame, a driver is fixedly arranged at the top of the placing frame, the bottom of the placing frame is fixedly sleeved with a limiter, the inner thread of the placing frame is sleeved with an extrusion rod, and the top of the placing frame is fixedly provided with a casing, the inside of the casing is movably provided with an impeller, the output end of the driver is movably sleeved with a linkage shaft, the outside of the linkage shaft is movably provided with a cutting sleeve, punching a positioning hole at a preset position, placing a position limiter in the positioning hole, driving an extrusion block to move downwards by using an extrusion rod, so that the extrusion block and one end of the connecting rod are extruded, the shape of the limiting block is changed under the action of the connecting rod, extrude around for the frictional force increase between rack and the ground has avoided explosion-proof centrifugal fan to appear the problem of rocking because of vibrations, thereby has improved explosion-proof centrifugal fan's stability.

Description

Explosion-proof centrifugal fan

Technical Field

The utility model relates to the technical field of centrifugal fans, in particular to an explosion-proof centrifugal fan.

Background

Centrifugal fans are widely used in ventilation, dust exhaust, cooling and the like of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, the centrifugal fan is a driven fluid machine, which increases the gas pressure and discharges the gas by means of the input mechanical energy, and can be divided into an environment-friendly fan, an explosion-proof fan, a high-temperature boiler induced draft fan and the like, however, most of the existing explosion-proof centrifugal fans can generate vibration in the using process, when the connection between the explosion-proof centrifugal fan and the ground is unstable, the explosion-proof centrifugal fan can shake violently, so that the balance of the explosion-proof centrifugal fan is reduced, the explosion-proof centrifugal fan can be damaged, in addition, when the motor of the explosion-proof centrifugal fan breaks down, the motor is not convenient to detach due to the connection structure of the explosion-proof centrifugal fan, and inconvenience is brought to maintenance personnel.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

The utility model aims to provide an explosion-proof centrifugal fan to solve the problems in the background technology.

2. Technical scheme

The utility model provides an explosion-proof centrifugal fan, includes the rack, the top fixed mounting of rack has the driver, and the bottom of rack is fixed to have cup jointed the stopper, the extrusion stem has been cup jointed to the internal thread of rack, and the top fixed mounting of rack has the casing, the inside movable mounting of casing has the impeller, the universal driving shaft has been cup jointed in the output activity of driver, the outside movable mounting of universal driving shaft has the cutting ferrule.

Preferably, the placing frame is fixedly connected with the driver through a fixing bolt, and the driver is parallel to the impeller.

Preferably, the stopper includes stop collar, connecting rod and extrusion piece, the activity cup joints between stop collar and the extrusion piece, and one side of stop collar has seted up the stopper, the screw thread cup joints between extrusion piece and the extrusion piece, fixed connection between the one end of connecting rod and the stopper, and the activity cup joints between the other end of connecting rod and the stop collar.

Preferably, the casing adopts a double-layer steel plate structure, the casing is movably sleeved with the linkage shaft, and the linkage shaft is fixedly connected with the impeller through a fixing rod.

Preferably, the driver is fixedly connected with the linkage shaft through a first positioning rod, and the linkage shaft is fixedly connected with the clamping sleeve through a second positioning rod.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages that: the locating hole is punched on the preset position, the limiting stopper is placed in the locating hole, the extrusion rod is used for driving the extrusion block to move downwards, the extrusion block is extruded with one end of the connecting rod, the form of the limiting stopper can be changed under the action of the connecting rod, the extrusion is performed on the periphery, the friction force between the placing frame and the ground is increased, the problem that the explosion-proof centrifugal fan shakes due to vibration is avoided, and the stability of the explosion-proof centrifugal fan is improved.

Support the processing through the bottom that uses the rack to the driver, when the driver breaks down after that, under the effect of a locating lever and No. two locating levers, separate driver and universal driving shaft, later use the gim peg to dismantle the driver fast, the maintainer of being convenient for maintains the processing to the driver to explosion-proof centrifugal fan's maintenance rate has been improved.

Drawings

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

FIG. 2 is a cross-sectional view of the overall construction of the present invention;

figure 3 is a side cross-sectional view of the ferrule of the present invention;

FIG. 4 is an enlarged view of the entire structure of the present invention at the point A in FIG. 2;

FIG. 5 is an enlarged view of the entire structure of the present invention at B of FIG. 2;

the reference numbers in the figures illustrate: 1. placing a rack; 2. a driver; 3. a stopper; 31. a limiting sleeve; 32. a connecting rod; 33. extruding the block; 4. an extrusion stem; 5. a housing; 6. an impeller; 7. a linkage shaft; 8. and (4) a ferrule.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, the present invention provides a technical solution:

an explosion-proof centrifugal fan comprises a placing frame 1, a driver 2 is fixedly arranged at the top of the placing frame 1, the bottom of the placing frame 1 is fixedly sleeved with a limiter 3, the inner thread of the placing frame 1 is sleeved with an extrusion rod 4, and the top of the placing frame 1 is fixedly provided with a casing 5, the interior of the casing 5 is movably provided with an impeller 6, the output end of the driver 2 is movably sleeved with a universal driving shaft 7, the exterior of the universal driving shaft 7 is movably provided with a cutting sleeve 8, the placing frame 1 is used for supporting the bottom of the explosion-proof centrifugal fan, the cutting sleeve 8 is used for connecting the output shaft of the driver 2 with one end of the universal driving shaft 7, the driver 2 is used for driving the universal driving shaft 7 to rotate, and the impeller 6 is rotated under the action of the universal driving shaft 7, under the double-layer steel structure of the casing 5, the explosion-proof performance of the centrifugal fan is enhanced, and the position of the explosion-proof centrifugal fan is fixed by using the limiting stopper 3 and the extrusion rod 4.

Further, through gim peg fixed connection between rack 1 and the driver 2, be parallel to each other between driver 2 and the impeller 6, use rack 1 to support the bottom of explosion-proof centrifugal fan and handle, use the gim peg to be in the same place driver 2 and rack 1 fixed connection after that for the output of driver 2 is located same horizontal plane with the middle part of impeller 6, thereby has improved explosion-proof centrifugal fan's supporting effect.

Furthermore, the position limiter 3 comprises a position limiting sleeve 31, a connecting rod 32 and an extrusion block 33, the position limiting sleeve 31 is movably sleeved with the extrusion block 33, and one side of the limiting sleeve 31 is provided with a limiting block, the extrusion block 33 is in threaded sleeve joint with the extrusion rod 4, one end of the connecting rod 32 is fixedly connected with the limiting block, the other end of the connecting rod 32 is movably sleeve joint with the limiting sleeve 31, a positioning hole is punched at a preset position, the position limiter 3 is placed in the positioning hole, then the extrusion rod 4 is used for driving the extrusion block 33 to move downwards, so that the extrusion block 33 and one end of the connecting rod 32 are extruded, the shape of the limiting block is changed under the action of the connecting rod 32, extrude around for the frictional force increase between rack 1 and the ground has avoided explosion-proof centrifugal fan to appear the problem of rocking because of vibrations, thereby has improved explosion-proof centrifugal fan's stability.

Further, the casing 5 adopts a double-layer steel plate structure, the casing 5 and the linkage shaft 7 are movably sleeved, the linkage shaft 7 and the impeller 6 are fixedly connected through a fixing rod, the explosion-proof performance of the explosion-proof centrifugal fan is enhanced under the double-layer steel plate structure of the casing 5, the problem that the explosion-proof centrifugal fan is difficult to use due to serious abrasion is avoided, and the service life of the explosion-proof centrifugal fan is prolonged.

Further, through locating lever fixed connection No. one between driver 2 and the universal driving shaft 7, through No. two locating lever fixed connection between universal driving shaft 7 and the cutting ferrule 8, when driver 2 broke down, use a locating lever and No. two locating levers to separate driver 2 and universal driving shaft 7, use the gim peg to dismantle driver 2 after that, the maintainer of being convenient for carries out quick maintenance to driver 2 and handles to explosion-proof centrifugal fan's maintenance speed has been improved.

In addition, the present invention relates to circuits and electronic components and modules all of which are known in the art and are fully implemented by those skilled in the art, and it is not necessary to state that the present invention is intended to be limited to such modifications as are within the scope of the appended claims.

The working principle is as follows: punching a positioning hole at a preset position, placing a stopper 3 in the positioning hole, then driving an extrusion block 33 to move downwards by using an extrusion rod 4, so that the extrusion block 33 is extruded with one end of a connecting rod 32, under the action of the connecting rod 32, the shape of the stopper is changed, the periphery is extruded, so that the friction force between a placing frame 1 and the ground is increased, then fixedly connecting a driver 2 and the placing frame 1 together by using a fixing bolt, so that the output end of the driver 2 and the middle part of an impeller 6 are positioned on the same horizontal plane, and when the driver 2 breaks down, separating the driver 2 from a linkage shaft 7 by using a first positioning rod and a second positioning rod, then detaching the driver 2 by using the fixing bolt, so that a maintainer can rapidly maintain the driver 2, and then enhancing the explosion-proof performance of an explosion-proof centrifugal fan under the double-layer steel plate structure of a casing 5, thereby improving the use effect of the explosion-proof centrifugal fan.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides an explosion-proof centrifugal fan, includes rack (1), its characterized in that: the top fixed mounting of rack (1) has driver (2), and the bottom of rack (1) is fixed to be cup jointed stopper (3), the internal thread of rack (1) has cup jointed extrusion pole (4), and the top fixed mounting of rack (1) has casing (5), the inside movable mounting of casing (5) has impeller (6), universal driving shaft (7) have been cup jointed in the output activity of driver (2), the outside movable mounting of universal driving shaft (7) has cutting ferrule (8).

2. An explosion-proof centrifugal fan according to claim 1, characterized in that: the placing rack (1) is fixedly connected with the driver (2) through a fixing bolt, and the driver (2) is parallel to the impeller (6).

3. An explosion-proof centrifugal fan according to claim 1, characterized in that: stopper (3) include stop collar (31), connecting rod (32) and extrusion piece (33), the activity cup joints between stop collar (31) and extrusion piece (33), and the stopper has been seted up to one side of stop collar (31), the screw thread cup joints between extrusion piece (33) and extrusion rod (4), fixed connection between the one end of connecting rod (32) and the stopper, and the activity cup joints between the other end of connecting rod (32) and stop collar (31).

4. An explosion-proof centrifugal fan according to claim 1, characterized in that: the casing (5) adopts a double-layer steel plate structure, the casing (5) and the linkage shaft (7) are movably sleeved, and the linkage shaft (7) and the impeller (6) are fixedly connected through a fixing rod.

5. An explosion-proof centrifugal fan according to claim 1, characterized in that: the driver (2) is fixedly connected with the linkage shaft (7) through a first positioning rod, and the linkage shaft (7) is fixedly connected with the clamping sleeve (8) through a second positioning rod.

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