Novel fan

Abstract

A novel fan belongs to the technical field of fans and comprises a fan body, a pressure sensor, a one-way bearing, a detection circuit and a fluid driving device. The front side of a motor rotating shaft of a fan body is installed in a one-way bearing inner ring, a connecting rod is arranged on the front side of a fixing shell installed outside a one-way bearing outer ring, and the front side of the connecting rod and the rear side of an impeller are installed together. A pressure sensor is mounted at an air outlet of the fan body; the fluid driving equipment comprises a shell, blades, a bearing and electromagnetic valves, the multiple blades are installed on the outer side of the fixed shell, an inlet pipe and an outlet pipe are installed at the upper end and the lower end of the shell respectively and connected with one ends of the two electromagnetic valves respectively, and the rear outer side end of the shell is installed at the front outer side end of a motor shell of the fan body; the detection circuit is installed in the element box and electrically connected with the element box. When the fan body is abnormal due to various reasons, a worker can be prompted to carry out overhaul and maintenance in time, and equipment applying the fan body to supply air can work normally before shutdown in an emergency.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan equipment technical field, especially a novel fan. BACKGROUND

[0002] Electric drive fan is the mechanical energy that relies on motor input, improves gas pressure and sends gas, and it is a kind of driven fluid machinery. Fan is widely used in factory, mine, tunnel, cooling tower, vehicle, ship and ventilation, dust removal and cooling of building, ventilation and air induction of boiler and industrial furnace, cooling and ventilation in air conditioning equipment and household appliance equipment and so on.

[0003] The existing fan general structure includes motor, volute and impeller, motor is installed at the outside end of volute, impeller is located in volute, motor drives the rotation of impeller located in volute, and then the rotation of impeller inhales and pressurizes gas and discharges. Although the existing fan meets the production needs to a certain extent, but due to the limitation of structure, there are still the following technical defects. First, the working performance of itself cannot be monitored, when motor and the like stop rotation due to various faults or impeller and motor shaft are loose and out of synchronization, the staff master the specific situation in the first time, which will bring adverse effects to the normal work of production equipment supplied with air by fan (for example, the internal temperature of heating furnace heated by fan is reduced due to the stop of fan, and the lack of air input of heating furnace is relatively long due to the lack of timely recovery of fan, which causes the solidification of molten metal). Second, fan can only produce flowing air by driving impeller by electricity, so when the motor of fan suddenly fails in production, the production equipment supplied with air by fan stops air supply due to the long time required for replacement and maintenance, which will bring great influence to normal production (for example, the stop of blast furnace blower will cause the sudden reduction of blast furnace air volume, unstable temperature and pressure in furnace, which may cause coal gas to escape in furnace, even cause "blowing off" accident; molten iron is retained in furnace or casting machine, and solidified to damage equipment; the stop of tilting device and oxygen blowing equipment of converter will cause the reaction out of control in converter, which may damage furnace lining or cause spatter; the converter in inclined state may cause steel overflow, and so on). In summary, it is particularly necessary to provide a fan with the functions of monitoring the working state of motor and using other driving sources as driving power of impeller to ensure the normal work of production equipment after the damage of motor and before the repair of motor. SUMMARY

[0004] In order to overcome the existing fan due to the limitation of structure, there are disadvantages as described in the background art, the utility model provides based on fan body, application in, under the joint action of relevant mechanism, can real -time monitoring fan body whether normal output flowing air, when fan body output flowing air is abnormally stopped due to various reasons, can real -time prompt staff to maintain in time, and in the emergency of motor damage, can continue to rotate for a period of time by compressed air or tap water mode drive impeller, so that the equipment of application fan body air supply can normally work before shutdown A new type of fan.

[0005] The technical scheme adopted by the utility model to solve its technical problems is:

[0006] A novel fan, including fan body, pressure sensor, one-way bearing, also have detection circuit, fluid drive equipment, the motor rotating shaft front side of fan body is installed in the inner ring of one-way bearing, the outer ring of one-way bearing is installed with fixed shell, the front side end of fixed shell is installed with connecting rod, and the rear side of the impeller of connecting rod front side end and fan body is installed together, the volute air outlet of fan body has mounting hole, and pressure sensor is installed in the opening, the fluid drive equipment includes shell, blade, bearing and electromagnetic valve, and the front and rear ends of shell are respectively installed with bearing, the middle part of the rotating shaft of motor is installed in the inner ring of rear end bearing, the middle part of connecting rod is installed in the inner ring of front end bearing, a plurality of blades are installed at the outer side end of fixed shell at interval, and inlet pipe and outlet pipe are respectively installed on the upper end and lower end of shell, one end of two electromagnetic valves is connected with the upper end of inlet pipe and the lower end of outlet pipe respectively, and the rear outer side end of shell is installed on the front outer side end of the motor shell of fan body, the detection circuit is installed in the component box, and the signal output end of pressure sensor is electrically connected with the signal input end of detection circuit.

[0007] Further, the electromagnetic valve is a normally closed valve core electromagnetic valve.

[0008] Further, the other end of the upper end electromagnetic valve is connected with the exhaust pipe of the air tank of the air compressor or the tap water pipe.

[0009] Further, the inner diameter of the shell is greater than the outer diameter formed by the outer sides of the plurality of blades.

[0010] Further, the detection circuit includes an adjustable resistor and an electrically connected resistor, a triode, a sounder and a relay, one end of the adjustable resistor is connected with one end of the first resistor and one end of the second resistor, the other end of the second resistor is connected with the base of the triode, the collector of the triode is connected with the negative power input end of the relay, the other end of the first resistor is connected with the emitter of the triode and the negative power input end of the sounder, and the positive power input end of the sounder is connected with the normally closed contact end of the relay.

[0011] Compared with the prior art, the utility model has the beneficial effects that: based on the fan body, under the joint action of the detection circuit and the pressure sensor, whether the fan body normally outputs flowing air can be monitored in real time, when the fan body outputs flowing air abnormally stops due to various reasons, the alarm can sound in real time to prompt the staff to maintain in time, in the emergency, after the motor of the fan body is damaged, the impeller can be driven to continue rotating for a period of time through the compressed air or tap water mode, so that the equipment supplied with air by the fan body can work normally before shutdown, and the probability of failure of the related production equipment is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further explained below in combination with the drawings and examples.

[0013] Figure 1 It is the whole structure schematic diagram of the utility model.

[0014] Figure 2 It is the local structure schematic diagram of the utility model.

[0015] Figure 3 It is the circuit diagram of the utility model. DETAILED DESCRIPTION

[0016] Figure 1 、 2A new type of fan, including fan body 1, power module U1, pressure sensor U2, one-way bearing 2, also has detection circuit 3, fluid drive device; the motor 101 of the fan body rotates the inner ring of the one-way bearing 2 in the front side end, the outer ring of the one-way bearing 2 is tightly sleeved with a fixed shell 21 with an open structure in the rear end, the front end of the fixed shell 21 is transversely welded with a connecting rod 22 in the middle, the front end of the connecting rod 22 and the rear end of the impeller 102 of the fan body are bolted together (the impeller 102 is located in the volute 103 of the fan body 1, the middle of the rear end of the volute 103 is installed with a bearing 104, the front middle of the connecting rod 22 is tightly sleeved in the inner ring of the bearing 104); the upper end of the air outlet of the volute 103 of the fan body has an opening, the pressure sensor U2 is fixedly installed in the opening and the air inlet pipe of the pressure sensor U2 is located in the air outlet of the volute 103; the fluid drive device includes hollow shell 41, blade 42, bearing 43, electromagnetic valve DC1 and DC2, the middle of the front and rear end of the shell 41 has an axle hole, the outer ring of the two bearings 43 is tightly sleeved in the axle hole, the outer ring of the bearing 43 is installed with a sealing rubber ring (sealed air) between the inner and outer rings; the front middle of the rotating shaft of the motor 101 is tightly sleeved in the inner ring of the rear bearing 43, the middle of the outer side of the connecting rod 22 is tightly sleeved in the inner ring of the front bearing 43, a plurality of blades 42 are welded at intervals on the outer end of the fixed shell 21, the upper left middle and the lower right middle of the shell 41 are vertically welded with an inlet pipe 411 and an outlet pipe 412 which are communicated with the inside, the upper end of the inlet pipe 411 and the lower end of the outlet pipe 412 are respectively connected with one end of the two electromagnetic valves DC1 and DC2 through threads, the rear outer end of the shell 41 is fixedly installed on the front outer end of the motor 101 shell of the fan body; the power module U1 and the detection circuit 3 are installed on the circuit board in the component box 5, the power input ends 1 and 2 of the power module U1 are respectively connected with the two poles of the AC 220V power supply through wires, the power output ends 3 and 4 of the power module U1 are connected with the power input ends 1 and 2 of the pressure sensor U2, the power input ends of the detection circuit, the positive power input end of the buzzer B1 and the emitter of the transistor Q1, the power input ends of the power switches S1 and S2 through wires, the signal output end 3 of the pressure sensor U2 is electrically connected with the other end of the signal input end of the detection circuit through an adjustable resistor RP1, the power output ends of the two power switches S1 and S2, the negative power output end 4 of the power module U1 and the power input ends of the two electromagnetic valves DC1 and DC2 are respectively connected through wires.

[0017] Figure 1 、 2The electromagnetic valve DC1 and DC2 are normally closed valve core electromagnetic valves (2W direct current electromagnetic valves) as shown in FIG. 3. The other end of the upper electromagnetic valve DC1 is connected to a water pipe or an air tank exhaust pipe through a pipe (preferably an air tank), and the other end of the lower electromagnetic valve DC2 is connected to a waste water pipe, with the end of the waste water pipe located in a drain. The inner diameter of the shell 41 is larger than the outer diameter of the plurality of blades 42. The detection circuit includes an adjustable resistor RP1 and resistors R1 and R2, a transistor Q1, a buzzer B1, and a relay K1 connected through a circuit board. One end of the adjustable resistor RP1 is connected to one end of the first resistor R1 and one end of the second resistor R2, the other end of the second resistor R2 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the negative power input end of the relay K1, the other end of the first resistor R1 is connected to the emitter of the transistor Q1 and the negative power input end of the buzzer B1, and the positive power input end of the buzzer B1 is connected to the normally closed contact end of the relay K1. Figure 3 In this embodiment, the resistors R1 and R2 have resistances of 10K and 47K respectively, the adjustable resistor RP1 has a resistance of 470K (adjusted to 85K in this embodiment), the transistor Q1 is a model 9013 (NPN), the buzzer B1 is a model FQ12V active continuous sound alarm, the relay K1 is a model DC12V, the power module U1 is an AC 220V to DC 12V power module, the pressure sensor U2 is a model PCM300 pressure sensor (two power input ends and one signal output end), the fan body 1 has a power of 2KW, and the one-way bearing is a model CSK17.

[0018] Figure 1 、 2, 3, the new type is based on the fan body 1, in the application, the motor of the fan body 1 is powered on, the rotating shaft drives the impeller to rotate, the air is output through the volute to provide flowing air for related production equipment; The fan body 1 is a mature technology, and the working principle of the application will not be repeated. After the AC 220V power supply enters the power input end of the power supply module U1, the stable DC 12V power supply output from the 3, 4 feet of the power supply module U1 enters the power input end of the power supply switch and the pressure sensor, the detection circuit. In the new type, when the fan body works normally and outputs flowing air, the pressure detected by the pressure sensor U2 is relatively large, the voltage signal output from the 3 feet of the pressure sensor U2 is divided by the adjustable resistor RP1 and the resistor R1, the resistor R2 is reduced in pressure and current, and the base of the triode Q1 is higher than 0.7V, the triode Q1 is turned on, the low level output from the collector is input into the negative power supply input end of the relay K1, the relay K1 is energized to attract the control power input end and the normally closed contact end to open circuit, then the siren B1 will not be powered on and sound, which represents that the fan body works normally. When the fan body works abnormally and does not output flowing air (or the amount of flowing air decreases), the pressure detected by the pressure sensor U2 is relatively low, the voltage signal output from the 3 feet of the pressure sensor U2 is divided by the adjustable resistor RP1 and the resistor R1, the resistor R2 is reduced in pressure and current, and the base of the triode Q1 is lower than 0.7V, the triode Q1 is cut off, and the low level output from the collector is no longer input into the negative power supply input end of the relay K1, the relay K1 is de-energized and no longer attracts the control power input end and the normally closed contact end to close, then the siren B1 will be powered on and sound, which represents that the fan body works abnormally. Specifically, the rotating shaft of the motor 101 of the fan body drives the inner ring of the one-way bearing 2 to rotate counterclockwise, the outer ring of the one-way bearing 2 drives the impeller 102 of the body to rotate counterclockwise, so that the volute of the fan body outputs flowing air. In the new type, when the motor of the fan body is normal, the rotating shaft of the motor drives the impeller 102 to rotate counterclockwise; When the motor fails to work, the siren B1 sounds, the staff can close the main power switch of the fan body, then open the power switches S1 and S2, so that the electromagnetic valves DC1 and DC2 are powered on and the valve core is opened, the high flow rate flowing air output by the air compressor or the high flow rate flowing water output by the tap will impact the blades 42 on the outer side of the shell 41 to rotate counterclockwise (the discharged waste water enters the waste water pool through the waste water pipe, or the discharged air is directly discharged to the atmosphere through the waste water pipe), so that the outer ring of the one-way bearing 2 (one-way device) will follow (the inner ring of the one-way device does not rotate), and the outer ring of the one-way device drives the impeller of the fan body to rotate to continue to provide flowing air for related equipment.Through the above, the novel fan body can monitor whether the fan body normally outputs flowing air in real time, when the fan body outputs flowing air abnormally stops due to various reasons, can real-time through the sound of the alarm to prompt the staff to maintain in time, in the emergency, the motor of the fan body is damaged, can drive the impeller to continue to rotate for a period of time through compressed air or tap water mode, so that the equipment applied to the fan body air supply can work normally before shutdown, reduces the probability of failure of the related production equipment.

[0019] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, for those skilled in the art, obviously the utility model is limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model.

[0020] In addition, it should be understood that, although the present specification is described in terms of embodiments, the embodiments do not contain only one independent technical solution, and the description of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in the embodiments can also be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A novel fan, comprising a fan body, a pressure sensor, and a one-way bearing, characterized in that, It also includes a detection circuit and a fluid drive device; the front side of the motor shaft of the fan body is installed in the inner ring of a one-way bearing, and a fixed shell is installed outside the outer ring of the one-way bearing. A connecting rod is installed on the front end of the fixed shell, and the front end of the connecting rod is installed together with the rear side of the impeller of the fan body; the air outlet of the volute of the fan body has a mounting hole, and the pressure sensor is installed in the opening; the fluid drive device includes a housing, blades, bearings, and solenoid valves, and bearings are installed on the front and rear ends of the housing respectively; the middle part of the motor shaft is installed in the inner ring of the rear bearing, the middle part of the connecting rod is installed in the inner ring of the front bearing, multiple blades are installed at intervals on the outer ends of the fixed shell, and inlet pipes and outlet pipes are installed on the upper and lower ends of the housing respectively. The upper end of the inlet pipe and the lower end of the outlet pipe are respectively connected to one end of two solenoid valves, and the rear outer end of the housing is installed on the front outer end of the motor housing of the fan body; the detection circuit is installed in a component box, and the signal output terminal of the pressure sensor is electrically connected to the signal input terminal of the detection circuit.

2. The novel fan according to claim 1, characterized in that, The solenoid valve is a normally closed solenoid valve with a spool.

3. The novel fan according to claim 1, characterized in that, The other end of the upper solenoid valve is connected to a tap water pipe or the exhaust pipe of an air compressor's air tank.

4. A novel fan according to claim 1, characterized in that, The inner diameter of the shell is larger than the outer diameter formed by the outer sides of the multiple blades.

5. A novel fan according to claim 1, characterized in that, The detection circuit includes an adjustable resistor and a resistor, a transistor, a buzzer, and a relay, all electrically connected. One end of the adjustable resistor is connected to one end of the first resistor and one end of the second resistor. The other end of the second resistor is connected to the base of the transistor. The collector of the transistor is connected to the negative power input terminal of the relay. The other end of the first resistor is connected to the emitter of the transistor and the negative power input terminal of the buzzer. The positive power input terminal of the buzzer is connected to the normally closed contact of the relay.

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