CN212155285U

CN212155285U - Centrifugal fan's overload prevention structure

Info

Publication number: CN212155285U
Application number: CN202020409715.3U
Authority: CN
Inventors: 滕文祥
Original assignee: Shandong Deke Blower Co ltd
Current assignee: Shandong Deke Blower Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-12-15
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a centrifugal fan's overload prevention structure, including shell body, carousel, control box and drive case, the lower terminal surface of control box is fixed with the callus on the sole, the callus on the sole is equipped with four altogether, and four callus on the sole are array distribution, the up end at the control box is all fixed to shell body and drive case, the pivot is installed in the inside rotation of shell body, and fixes the centre department at the carousel in the outside of pivot, the preceding terminal surface outside annular array distribution of carousel has the fan blade, the air exit has been seted up to upper end one side of shell body, the exhaust vent department of terminal surface is fixed with solid fixed ring before the shell body, gu fixed ring's inboard is fixed with the filter screen, gu fixed ring's outside annular array distributes and has the screw, and the lower extreme of screw is fixed on the shell body, the drive case is. The utility model discloses possess protective structure, reduce the ageing rate of internals, circuit and cut off the power supply when transshipping, avoid the advantage of equipment damage.

Description

Centrifugal fan's overload prevention structure

Technical Field

The utility model relates to a centrifugal fan technical field specifically is a centrifugal fan's overload prevention structure.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion. Overload may occur due to various reasons, such as an increase in voltage at a power supply terminal, an increase in the number and power of electric devices in a circuit, and an increase in resistance due to aging of an electric wire. Although the temporary power utilization is not affected, the aging of the equipment such as wires and sockets in the loop is aggravated; if this is done for a long time, or if the overload is too high, the line may be heated, and a fire may occur.

When the centrifugal fan is used, the aging of parts inside the rotating structure is aggravated due to the entry of foreign dust in the outside air, and the overload phenomenon caused by overlarge power is easy to cause; and current equipment does not have effectual protective structure at fan overload in-process and places equipment operation and cause the damage phenomenon, and when the ground resistance increased after the internal circuit aged, the inside electric current that flows increased, easily caused equipment damage.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a centrifugal fan's overload prevention structure possesses protective structure, reduces the ageing rate of internals, circuit and cuts off the power supply when transshipping, avoids the advantage of equipment damage, and it is high to solve the ageing rate of existing equipment, fragile and do not possess the problem of overload protection.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a centrifugal fan's overload prevention structure, includes shell body, carousel, control box and drive case, the lower terminal surface of control box is fixed with the callus on the sole, the up end at the control box is all fixed to shell body and drive case, the pivot is installed in the inside rotation of shell body, and the outside of pivot fixes the centre department at the carousel, the preceding terminal surface outside annular array of carousel distributes and has the fan blade, the air exit has been seted up to upper end one side of shell body, the air exit department of terminal surface is fixed with solid fixed ring before the shell body, gu fixed ring's inboard is fixed with the filter screen, gu fixed ring's outside annular array distributes and has the screw, and the lower extreme of screw is fixed on the shell body, the drive case is connected with the.

Preferably, the inside both sides of control box are fixed with bee calling organ and circuit breaker respectively, the thermovent has been seted up to the preceding terminal surface of control box, and is equipped with the dust screen in the thermovent.

Preferably, the foot pads are four in number and distributed in an array, and the anti-skidding sleeves are sleeved at the lower ends of the foot pads.

Preferably, the outer shell is fixed on the control box through a fixing block, and the driving box is fixed on the control box through a support.

Preferably, the turntable and the fan blade correspond to an air inlet on the front end face of the outer shell, the turntable is designed in an annular shape, and the turntable is matched with the outer shell in size.

Preferably, a motor is fixed inside the driving box, an output shaft of the motor is connected with the rotating shaft, and two ends of the connecting wire are respectively connected with the motor and the circuit breaker.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model is powered by an external power supply through the arrangement of a control box and a filter screen, the device is started, a fixing ring is fixed at the air inlet of an outer shell through screws, when a motor in the driving box drives a turntable to rotate through a rotating shaft, external air is sucked through the air inlet through a rotating fan blade, the entering air is filtered through the filter screen to avoid dust entering, when the air enters into a guiding air outlet, when the internal circuit of the device is aged and resistance increasing current rises, the detection of the supply current is carried out through a circuit breaker in the control box, when the limit of the circuit breaker is exceeded, the circuit breaker controls the power supply line of the motor in the driving box to be disconnected, a control mainboard in the control box starts a buzzer at the moment, the buzzer generates sound and transmits out through a heat dissipation port outside the control box, and a worker hears the alarm sound and then maintains the device, the device, the protection can be effectively carried out on the inside of the equipment, the aging of the equipment is effectively reduced, meanwhile, the power is timely cut off in the overload process, the equipment is prevented from being seriously damaged, and the loss is reduced.

Drawings

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

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic structural diagram of the present invention.

In the figure: 1. an outer housing; 2. a turntable; 3. a rotating shaft; 4. a fan blade; 5. a fixed block; 6. a control box; 7. a foot pad; 8. an air outlet; 9. a drive box; 10. a support; 11. a connecting wire; 12. a fixing ring; 13. a screw; 14. and (5) filtering by using a filter screen.

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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to fig. 3, the present invention provides an embodiment: the utility model provides a centrifugal fan's overload prevention structure, which comprises an outer shell body 1, carousel 2, control box 6 and drive case 9, the lower terminal surface of control box 6 is fixed with callus on the sole 7, callus on the sole 7 is equipped with four altogether, and four callus on the sole 7 are the array distribution, the antiskid cover has been cup jointed to the lower extreme of callus on the sole 7, the inside both sides of control box 6 are fixed with bee calling organ and circuit breaker respectively, the thermovent has been seted up to the preceding terminal surface of control box 6, and be equipped with the dust screen in the thermovent, the up end at control box 6 is all fixed to shell body 1 and drive case 9, the inside rotation of shell body 1 installs pivot 3, and the outside of pivot 3 is fixed in the centre department of carousel 2, the preceding terminal surface.

Air exit 8 has been seted up to shell body 1's upper end one side, the air exit department of terminal surface is fixed with solid fixed ring 12 before shell body 1, gu fixed ring 12's inboard is fixed with filter screen 14, gu fixed ring 12's outside annular array distributes and has screw 13, and the lower extreme of screw 13 is fixed on shell body 1, shell body 1 passes through fixed block 5 to be fixed on control box 6, drive box 9 passes through support 10 to be fixed on control box 6, the air intake of terminal surface is corresponding before carousel 2 and tuber leaf 4 and the shell body 1, carousel 2 is the annular design, and carousel 2 and shell body 1's big or small looks adaptation.

The driving box 9 is connected with the inside of the control box 6 through a connecting wire 11, a motor is fixed inside the driving box 9, an output shaft of the motor is connected with a rotating shaft 3, two ends of the connecting wire 11 are respectively connected with the motor and a circuit breaker, an external power supply supplies power to start the device, a fixing ring 12 is fixed at an air inlet of the outer shell 1 through a screw 13, when the motor in the driving box 9 drives a turntable 2 to rotate through the rotating shaft 3, external air is sucked through the air inlet through a rotating fan blade 4, the entering air is filtered through a filter screen 14 to avoid dust entering, when the air enters, the air is guided to an air outlet 8, when an internal circuit of the device is aged and resistance increasing current rises, the power supply current is detected through the circuit breaker in the control box 6, when the limit of the circuit breaker is exceeded, the circuit breaker controls a power supply line of the motor in the driving box 9 to be disconnected, buzzer produces sound and spreads through the thermovent in the 6 outsides of control box, and the staff hears and maintains equipment behind the police dispatch newspaper sound, and this device simple structure, it is easy and simple to handle, can effectively protect equipment inside, effectively reduce equipment ageing, in time cut off the power supply at the overload in-process simultaneously, avoid equipment to damage seriously, reduce the loss.

The working principle is as follows: the utility model discloses in operation, the external power supply supplies power, start this device, gu fixed ring 12 passes through screw 13 and fixes in shell body 1's air intake department, the motor drives carousel 2 through pivot 3 and rotates in drive case 9, inhale through air intake department with external air through pivoted fan blade 4, filter the entering air through filter screen 14, avoid the dust to get into, direction air exit 8 after the air gets into, it is ageing when equipment internal circuit, resistance increase electric current risees the back, the circuit breaker through in the control box 6 carries out supply current's detection, after surpassing the circuit breaker quota, the power supply line disconnection of motor in the circuit breaker control drive case 9, control mainboard starts bee calling organ in the control box 6 this moment, bee calling organ produces the heat dissipation mouth of sound through the control box 6 outsides and spreads, the staff hears and maintains equipment behind the police dispatch. The working principle of the present invention is the above.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a centrifugal fan's overload prevention structure, includes shell body (1), carousel (2), control box (6) and drive box (9), its characterized in that: a foot pad (7) is fixed on the lower end face of the control box (6), the outer shell (1) and the driving box (9) are both fixed on the upper end face of the control box (6), a rotating shaft (3) is rotatably installed inside the outer shell (1), the outer side of the rotating shaft (3) is fixed in the middle of the turntable (2), the outer side of the front end surface of the turntable (2) is distributed with fan blades (4) in an annular array, an air outlet (8) is formed in one side of the upper end of the outer shell (1), a fixing ring (12) is fixed at the air outlet on the front end face of the outer shell (1), a filter screen (14) is fixed on the inner side of the fixing ring (12), screws (13) are distributed on the outer side of the fixing ring (12) in an annular array, and the lower end of the screw (13) is fixed on the outer shell (1), and the driving box (9) is connected with the inside of the control box (6) through a connecting wire (11).

2. The overload prevention structure of the centrifugal fan according to claim 1, wherein: the inside both sides of control box (6) are fixed with bee calling organ and circuit breaker respectively, the thermovent has been seted up to the preceding terminal surface of control box (6), and is equipped with the dust screen in the thermovent.

3. The overload prevention structure of the centrifugal fan according to claim 1, wherein: foot pad (7) are equipped with four altogether, and four foot pads (7) are the array distribution, the antiskid cover has been cup jointed to the lower extreme of foot pad (7).

4. The overload prevention structure of the centrifugal fan according to claim 1, wherein: the outer shell (1) is fixed on the control box (6) through the fixing block (5), and the driving box (9) is fixed on the control box (6) through the support (10).

5. The overload prevention structure of the centrifugal fan according to claim 1, wherein: the air inlet of terminal surface is corresponding before carousel (2) and fan blade (4) and shell body (1), carousel (2) are the annular design, and the size looks adaptation of carousel (2) and shell body (1).

6. The overload prevention structure of the centrifugal fan according to claim 1, wherein: the motor is fixed in the driving box (9), an output shaft of the motor is connected with the rotating shaft (3), and two ends of the connecting wire (11) are connected with the motor and the circuit breaker respectively.