CN207839133U - Food refuse disposer - Google Patents

Abstract

The utility model provides a kind of food refuse disposer, including food transport unit, grind discharge unit and motor section, motor section uses strong, the at low cost series excited machine of the big blocking rotation ability of torque, and control device of the setting for controlling motor output on series excited machine, AC power is converted to DC power supply by the rectifier circuit module of control device, the power factor for increasing slow-speed of revolution series excited machine, reduces idle work, improves useful work.Also, control device keeps it in constant rotating speed by adjusting the PWM value power supply of series excited machine, reduces series excited machine and is spaced apart that rotating speed is high and noise is small, and the big blocking rotation ability of series excited machine torque is strong, at low cost, greatly improves the usage experience of user.The utility model is also additionally arranged stall protector, even if stall protector still can reliably disconnect series excited machine power circuit after control device damage, provides duplicate protection, user's use is safer.

Description

Food refuse disposer

Technical field

The utility model is related to a kind of food refuse disposers.

Background technology

Food refuse disposer is the machine for crushing residue after meal, it is driven using high-speed rotating motor in grinding chamber Abrasive disk, food refuse mutually impinge upon under the influence of centrifugal force food refuse is ground into the extremely short time it is tiny Particle flows to discharge in sewer downstream.Consider from user's angle, it is desirable that low noise, crush efficiency are high.Due to series excited machine It is spaced apart rotating speed height, noise is big and characteristic is soft.It is not using in the market now, it need to be by the way that series excited machine, when being spaced apart, loading is dropped The mode of rotating speed reaches the driving effect of permanent magnet brush motor.

The motor majority of food refuse disposer is using induction machine, magneto currently on the market.But due to induction Motor overload ability is weak, often occurs stall situation when grinding up the refuse, and is also easy to cause machine breakdown, and user experience is very poor. And magneto needs to use more magnet, due to the rare sustainable growth for leading to magnet price of rare earth, does not meet and continues The needs of development.Therefore, it is necessary to be improved for the prior art, it is a kind of anti-blocking there is an urgent need for being selected in food refuse disposer Turn higher ability, low noise and the motor conducive to sustainable development.

Invention content

The purpose of this utility model is to provide a kind of blocking rotation abilities higher, low noise and safe food refuse Processor.

To realize that one of above-mentioned purpose of utility model, one embodiment of the utility model provide a kind of food-trash treatment Device, including food transport unit, discharge unit and motor section are ground, the motor section includes series excited machine, the series excited machine packet The control device for controlling motor output is included, the control device includes for AC power to be converted to the whole of DC power supply Flow bridge circuit module.

As being further improved for one embodiment of the utility model, the control device further includes Rotating speed measring module, The Rotating speed measring module include be coaxially disposed on the motor shaft of the series excited machine magnet ring and match with the magnet ring Sensing device for incuding the series excited machine rotating speed.

As being further improved for one embodiment of the utility model, the sensing device includes inductance sensor.

As being further improved for one embodiment of the utility model, the control device further includes being connected with power supply The output end of controller module and drive circuit module, the Rotating speed measring module is connected with the input terminal of the controller module Connect, the series excited machine speed feedback signal for will sense is sent to the controller module, the controller module it is defeated Outlet is connected with the input terminal of the drive circuit module, for being incited somebody to action after being judged according to the series excited machine tach signal Different pwm control signals is sent to the drive circuit module, and the drive circuit module is used for defeated to the series excited machine Go out the power supply of different PWM values.

As being further improved for one embodiment of the utility model, the rectifier circuit module is connected to the driving Between circuit module and the series excited machine.

As being further improved for one embodiment of the utility model, the Rotating speed measring module includes sensor circuit unit The amplifier circuit unit being connected with the output end of the sensor circuit unit.

As being further improved for one embodiment of the utility model, the sensor circuit unit includes at least parallel with one another The inductive sensor and filter capacitor of setting, the amplifier circuit unit include at least the first triode, first triode Collector is connected through the 15th resistance with the 4th input terminal of the controller module.

As being further improved for one embodiment of the utility model, the drive circuit module includes at least the three or three pole Pipe and thyristor, the second output terminal of the controller module are connected with the base stage of the third transistor, and described the The collector of three triodes is connected through the 9th resistance with the control pole of the thyristor.

As being further improved for one embodiment of the utility model, the control device further includes being connected with power supply Regulating filtering module.

As being further improved for one embodiment of the utility model, the control device further includes zero passage detection module, The zero passage detection module includes be in series twelfth resistor and thirteenth resistor, one end of the thirteenth resistor and the control The third input terminal of device module processed is connected.

As being further improved for one embodiment of the utility model, the series excited machine further includes for working as series excited machine The stall protector of working power is cut off when stall.

As being further improved for one embodiment of the utility model, the stall protector includes being set to the string Arrangement of clutch, actuating device and the switching device being series in series excited machine circuit on the motor shaft of motor are swashed, when series excitation electricity The arrangement of clutch promotes actuating device to act and disconnects switching device when the rotating speed of machine is greater than the set value.

As being further improved for one embodiment of the utility model, limit is offered on the shell of the actuating device Slot, the actuating device includes can be described along the sliding part that limiting slot moves and the compression spring being connected between sliding part and shell Convex block is provided on sliding part, the food refuse disposer has at least two state of normal operating conditions and stall conditions, When food refuse disposer is in normal operating conditions, the compression spring contraction makes sliding shoe be stably maintained at setting position, The convex block of the actuating device and the switch portion of microswitch offset and the switching device are made to be held on.

As being further improved for one embodiment of the utility model, the switching device is microswitch.

As being further improved for one embodiment of the utility model, the arrangement of clutch includes a plurality of clutch blocks, institute It states and is connected with brake spring between a plurality of clutch blocks, when food refuse disposer is in stall conditions, the clutch block exists The sliding shoe of the actuating device is set to be moved to far from motor axis direction under centrifugation force effect, the convex block of the actuating device is detached from The setting position to offset with the switch portion of microswitch, the switching device disconnect the power circuit of series excited machine.

As being further improved for one embodiment of the utility model, the sliding part of the actuating device includes fixed setting In on one end axis pin and be coaxially set in the needle bearing on the axis pin, the needle bearing of the actuating device Anti-attrition piece is provided in both ends of the surface.

Compared with prior art, the utility model has the beneficial effects that：This reality is can be seen that from the above technical solution Have the characteristics that many Substantial technicals outstanding with novel, after implementing technical solutions of the utility model, significant technology into Step is mainly reflected in：The food refuse disposer of the utility model uses strong, the at low cost series excitation of the big blocking rotation ability of torque The rectifier circuit module of motor, and control device of the setting for controlling motor output on series excited machine, control device will be handed over Galvanic electricity source is converted to DC power supply, increases the power factor of slow-speed of revolution series excited machine, reduces idle work, improves useful Work(.

Also, control device keeps it in constant rotating speed by adjusting the PWM value power supply of series excited machine, reduces string Sharp motor is spaced apart rotating speed height and noise is small, greatly improves the usage experience of user.The sensing device of control device is inductance sense Device is answered, using the control device reliability higher of inductance principle, stability is more preferable, and cost is lower.Also, according to different works Make place, different regional, different users can set different constant rotational speeds to meet the diversified demand of user, be not required to Motor is changed, allows a motor that there are a variety of different working effects.It is also additionally arranged stall protector, even if control Stall protector still can reliably disconnect series excited machine power circuit after device damage, provide duplicate protection user using more Add safety.

Description of the drawings

Fig. 1 is motor section broken section structural schematic diagram in the utility model embodiment one；

Fig. 2 is the circuit module principle schematic of control device in the utility model embodiment one；

Fig. 3 is that rectifier circuit module arranges front and back power supply wave shape schematic diagram in the utility model embodiment one；

Fig. 4 is the electrical block diagram of control device in the utility model embodiment one；

Fig. 5 is the control method flow chart of control device in the utility model embodiment one；

Fig. 6 is motor section broken section structural schematic diagram in the utility model embodiment two；

Fig. 7 is another angle broken section structural schematic diagram of motor section in the utility model embodiment two；

Fig. 8 is the structural schematic diagram after motor section removal casing in the utility model embodiment two；

Fig. 9 is stall protector structural schematic diagram under normal operating conditions in the utility model embodiment two；

Figure 10 is stall protector structural schematic diagram under stall conditions in the utility model embodiment two；

Figure 11 is that actuating device is shown with switching device fit structure under normal operating conditions in the utility model embodiment two It is intended to；

Figure 12 is actuating device and switching device fit structure schematic diagram under stall conditions in the utility model embodiment two；

Figure 13 is the sliding part body construction schematic diagram of actuating device in the utility model embodiment two；

Figure 14 is the sliding part structural schematic diagram of actuating device in the utility model embodiment two.

Specific implementation mode

The utility model is described in detail below with reference to specific implementation mode shown in the drawings.But these embodiment party Formula is not intended to limit the utility model, structure that those skilled in the art are made according to these embodiments, method or Transformation functionally is all contained in the scope of protection of the utility model.

Embodiment one：

Referring to Figures 1 and 2, in the embodiment of the utility model, a kind of food refuse disposer 10, including food pass It send portion 11, grind discharge unit 12 and motor section 13, motor section 13 includes series excited machine 30, and series excited machine has torque big, anti- The strong and at low cost advantage of stall ability.It includes grinding portion and discharge unit to grind discharge unit 12, and the portion of grinding includes grinding mechanism, mill Broken mechanism includes static grinding ring and rotating shredder assemblies.Multiple openings, rotating shredder assemblies packet are provided on static grinding ring Include convex block and abrasive disk.Series excited machine 30 drives rotating shredder assemblies rotation, and convex block is for pushing food refuse and being squeezed With crashing food rubbish in multiple openings of stationary grind ring.

Series excited machine 30 has the control device 50 for controlling motor output.The control device 50 of series excited machine 30 includes Rectifier circuit module 54, rectifier circuit module 54 are connected between drive circuit module 53 and series excited machine 30.With reference to figure 3, AC power is converted to DC power supply by rectifier circuit module 54, increases the power factor of slow-speed of revolution series excited machine 30, Reduce idle work, improve useful work, when series excited machine encounters heavy load power and torque all become larger, so that it is had enough Power and torque drive garbage disposer cutterhead crashing food rubbish, avoid the generation of motor rotation blockage.

Control device 50 further includes Rotating speed measring module 51, and Rotating speed measring module 51 includes coaxial arrangement in series excited machine 30 Motor shaft 31 on magnet ring 32 and sensing device 33 for incuding 30 rotating speed of series excited machine is matched with magnet ring 32.This implementation Sensing device 33 in mode is inductance sensor, and inductance sensor is disposed adjacent with magnet ring 32.When series excited machine 30 works When, magnet ring 32 and the motor shaft of series excited machine 30 rotate synchronously, the electricity that the magnetic force line cutting that the rotation of magnet ring 32 generates is disposed adjacent Inductance coil in propagated sensation sensor, inductance coil accordingly induces different electric signals under different rotating speeds.The present embodiment is using electricity Feel the rotating speed of sensor sensing series excited machine 30, the reliability higher compared with other sensing devices such as Hall element, stability More preferably, and cost is lower.

The control device 50 of series excited machine 30 further includes the controller module 52 and drive circuit module being connected with power supply 53.After series excited machine 30 is powered, the rotor position signal that controller module 52 is fed back according to series excited machine 30 is arranged by program It is required that send out instruction to drive circuit module 53, drive circuit module 53 receives the instruction of controller module 52 to series excited machine 30 provide the power supply of corresponding PWM, and series excited machine 30 starts running work.

The output end of Rotating speed measring module 51 is connected with the input terminal of controller module 52, the series excitation for will sense The speed feedback signal of motor 30 is sent to controller module 52.The output end of controller module 52 and drive circuit module 53 Input terminal is connected, for being sent to different pwm control signals after being judged according to the tach signal of series excited machine 30 Drive circuit module 53, drive circuit module 53 are used to export the power supply of different PWM values to series excited machine 30.Control device 50 Constant rotating speed is kept it in by adjusting the PWM value power supply of series excited machine, series excited machine is reduced and is spaced apart rotating speed height and makes an uproar Sound is small.

Specifically, first, controller module 52 judge motor speed that inductance sensor 34 detects in real time whether etc. In setting speed, if so, the PWM duty cycle signal that then controller module 52 is transmitted to drive circuit module 53 remains unchanged, such as It is no, then judge whether real-time rotating speed is more than setting speed, if so, then controller module 52 transmits reduction to drive circuit module 53 PWM duty cycle signal lead to if not, controller module 52 transmits increased PWM duty cycle signal to drive circuit module 53 The rotating speed for crossing control PWM duty cycle signal control series excited machine 30 is kept constant.Since constant rotational speed is far smaller than series excited machine 30 are spaced apart rotating speed, so as to being effectively reduced the noise that is spaced apart of garbage disposer, and the big blocking rotation energy of series excited machine torque Power is strong, at low cost, improves the usage experience of user.

With reference to Fig. 4, Rotating speed measring module 51 includes sensor circuit unit and is connected with the output end of sensor circuit unit Amplifier circuit unit.Sensor circuit unit includes at least the inductive sensor L1 and filter capacitor C3 of setting parallel with one another, works as string When swashing the work of motor 30, magnet ring 32 rotates the inductive sensor L1 that the magnetic force line cutting generated is disposed adjacent, and incudes under different rotating speeds Inductance L1 accordingly induces different electric signals, and it is defeated that the electric signal of the output by the 5th resistance R5 is converted to voltage signal Enter to the input terminal of amplifier circuit unit.

Amplifier circuit unit includes at least the first triode Q1, the induced electricity at the 5th both ends resistance R5 of sensor circuit unit Pressure signal is input to the base stage of the first triode Q1, and the collector C of the first triode Q1 is through the 15th resistance R15 and controller mould 4th input terminal P4 of block is connected, and the electric signal that sensor circuit unit exports is amplified processing by the first triode Q1, place Fourth input terminal P4 of the voltage signal through the 15th resistance R15 current limliting input controllers module 52 of gained after reason.

Drive circuit module 53 include at least third transistor Q3 and thyristor TR1, the second of controller module 52 Output end P2 is connected through eleventh resistor R11 with the base stage B of third transistor Q3, the control letter for that will control PWM outputs Number input driving circuit control module 53, the collector C of third transistor Q3 is through the control of the 9th resistance R9 and thyristor TR1 Pole G processed is connected, and the turn-on time of control pole G control thyristors TR1 is to control the size of PWM out-put supplies.

The control device 50 of series excited machine 30 further includes the regulating filtering module 55 being connected with power supply, for making holding control The circuit voltage of device 50 processed is stably held in 5V.Regulating filtering module 55 includes the first filtering voltage regulation capacitance of the setting that is in parallel C1 and voltage-stabiliser tube V1.One end of voltage-stabiliser tube V1 is connected with the first diode D1, and the first diode D1 is unidirectional for holding circuit Conducting, to protect voltage-stabiliser tube V1.

The control device 50 of series excited machine 30 further includes zero passage detection module 56, and zero passage detection module 56 includes being in series the The third input terminal P3 phases of one end of 12 resistance R12 and thirteenth resistor R13, thirteenth resistor R13 and controller module 52 Connection, controller module 52 is input to by the power supply zero cross signal detected.Zero passage detection module 56 is according to the power supply detected Zero cross signal controls the turn-on time of thyristor TR1, and the output voltage to control series excited machine makes it keep rotating speed permanent It is fixed.According to different workplaces, that different regional, different users can set different constant rotational speeds is more to meet user The demand of sample need not change motor, and a motor is allow to have a variety of different working effects.

With reference to Fig. 5, a kind of control method of food refuse disposer, food refuse disposer includes food transport unit, mill Broken discharge unit and motor section, motor section include series excited machine, and series excited machine includes Rotating speed measring module, controller module and drive Dynamic circuit module.The control method includes the following steps：

Step 1：Rotating speed measring module detects the rotating speed of the series excited machine in real time, and the real-time tach signal is transmitted To controller module；

Step 2：Controller module compares real-time rotating speed judgement with setting speed, and according to judging result to driving Circuit module transmits PWM duty cycle signal；

Step 3：Drive circuit module provides power supply output according to PWM duty cycle signal to series excited machine;

Step 4：Step 1 is executed again.

Specifically, in step 2, controller module first judges whether real-time rotating speed is equal to setting speed, if so, then The PWM duty cycle signal that controller module is transmitted to drive circuit module remains unchanged, if not, judging whether real-time rotating speed is big again In setting speed, if so, the PWM duty cycle signal that then controller module reduces to drive circuit module transmission, if not, control Device module transmits increased PWM duty cycle signal to drive circuit module, to make series excited machine remain setting speed, by It is spaced apart rotating speed in what setting speed was far smaller than series excited machine, makes an uproar so as to be effectively reduced being spaced apart for food refuse disposer Sound improves the usage experience of user.

Series excited machine further includes zero passage dot circuit detection module, and drive circuit module includes silicon-controlled, step 2 and step Further include zero passage dot circuit detection module detection power supply zero cross signal between three and controls silicon-controlled conducting according to zero cross signal Zero cross signal is input to controller module by the step of time, zero passage dot circuit detection module, and controller module is according to the zero passage The turn-on time of signal control thyristor adjusts the power supply output size of series excited machine.

Embodiment two：

With reference to Fig. 6-10, a kind of food refuse disposer, including food transport unit, discharge unit and motor section are ground, electricity Machine portion includes series excited machine, the difference between this embodiment and the first embodiment lies in, series excited machine includes for adjusting series excited machine 30 So that it is kept constant outside the control device of rotating speed 50, further includes the stall protection dress for cutting off working power under stall conditions It sets.

Stall protector include the arrangement of clutch 61 being set on the motor shaft 31 of series excited machine 30, actuating device 62 and The switching device 60 being series in 30 control device of series excited machine, 50 circuit.When control device 50 breaks down, due to no longer The rotating speed of motor, which can be controlled, leads to the raising out of control of the rotating speed of series excited machine 30, when the rotating speed of series excited machine 30 is greater than the set value, Arrangement of clutch 61 hits actuating device 62 under the influence of centrifugal force makes it disconnect switching device 60, even if control device 50 damages Stall protector remains able to be assuredly shut off working power afterwards, plays the role of dual security protection.Garbage disposer can be set Setting reminding module reminds user to replace the control device that has damaged, and use is safer, intelligence, conveniently.

Specifically, offering limiting slot 64 on the shell 63 of actuating device 62, actuating device 62 includes can be along limiting slot The sliding parts 65 of 64 movements and the compression spring 66 that is connected between sliding part 65 and shell 63 are provided with convex block 67 on sliding part 65. With reference to Fig. 9 and Figure 11, food refuse disposer has at least two state of normal operating conditions and stall conditions, works as food refuse When processor is in normal operating conditions, the contraction of compression spring 66 makes sliding part 65 be stably maintained at setting position.

In the present embodiment, switching device 60 be microswitch, microswitch 68 have switch portion 69, actuating device 62 it is convex The switch portion 69 of block 67 and microswitch 68 offsets and microswitch 68 is made to be held on.In other implementations, it switchs Device can be the sheet metal that can be electrically connected or other travel switches, can also be inductive switch, such as piezoelectricity inductive switch, electromagnetism Inductive switch etc..

Arrangement of clutch 61 includes a plurality of clutch blocks 70, and brake spring 71 is connected between a plurality of clutch blocks 70.This reality It includes two clutch blocks 70 to apply in example arrangement of clutch 61, and two clutch blocks 70 and its between brake spring 71 with respect to motor shaft It is symmetrical arranged.0 and Figure 12 referring to Fig.1, when food refuse disposer is in stall conditions, clutch block 70 is under the action of the centrifugal force The sliding part 65 for hitting actuating device 62 is moved to far from motor axis direction, and the convex block 67 of actuating device 62 is detached from and microswitch The setting position that 68 switch portion 69 offsets, microswitch 68 disconnect the power circuit of series excited machine 30.

The sliding part 65 of actuating device 62 includes sliding part ontology 80, is fixedly installed on 80 one end of sliding part ontology It axis pin 81 and is coaxially set in the needle bearing 82 on axis pin 81.Since needle bearing 82 can be rotated around axis pin 81, stall shape When the clutch block 70 of high-speed rotation hits needle bearing 82 under state, needle bearing 82 can slow down its friction between clutch block 70 Power, protection actuating device 62 work normally.

3 and Figure 14 referring to Fig.1, has on sliding part ontology 80 and the 64 matched lug boss of limiting slot on shell 63 83, lug boss 83 is located at the movement travel that limit slippage portion 65 is used in limiting slot 64.On the other end of sliding part ontology 80 It is provided with the hole 84 for installing compression spring 66, so that 66 one end of compression spring is fixedly installed on sliding part ontology 80, the other end is connected to On 63 inner wall of shell of actuating device 62.Shell 63 is fixed on by location hole in the shell of food refuse disposer, normal work Make state lower slider portion 65 and is stably maintained at setting position under the reply force effect of compression spring 66.

Anti-attrition piece 85 is provided in the both ends of the surface of the needle bearing 82 of actuating device 62, needle bearing 82 is in the present embodiment Metal material is made, and anti-attrition piece 85 is used to reduce the frictional force between sliding part ontology, prevents noise from increasing.

It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book With the other embodiment of understanding.

Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model Body illustrates that they are all without departing from made by the utility model skill spirit not to limit the scope of protection of the utility model Equivalent implementations or change should be included within the scope of protection of this utility model.

Claims (16)

1. a kind of food refuse disposer, including food transport unit, grind discharge unit and motor section, which is characterized in that described Motor section includes series excited machine, and the series excited machine includes the control device for controlling motor output, the control device packet Include the rectifier circuit module for AC power to be converted to DC power supply.

2. food refuse disposer according to claim 1, it is characterised in that：The control device further includes Rotating speed measring Module, the Rotating speed measring module include be coaxially disposed on the motor shaft of the series excited machine magnet ring and with the magnet ring phase Coordinate the sensing device for incuding the series excited machine rotating speed.

3. food refuse disposer according to claim 2, it is characterised in that：The sensing device includes inductance sensing Device.

4. food refuse disposer according to claim 3, it is characterised in that：The control device further includes and power supply phase The controller module and drive circuit module of connection, the input of the output end and the controller module of the Rotating speed measring module End is connected, and the series excited machine speed feedback signal for will sense is sent to the controller module, the controller mould The output end of block is connected with the input terminal of the drive circuit module, for being sentenced according to the series excited machine tach signal It has no progeny and different pwm control signals is sent to the drive circuit module, the drive circuit module is used for the series excitation Motor exports the power supply of different PWM values.

5. food refuse disposer according to claim 4, it is characterised in that：The rectifier circuit module is connected to institute It states between drive circuit module and the series excited machine.

6. food refuse disposer according to claim 5, it is characterised in that：The Rotating speed measring module includes induced electricity Road unit and the amplifier circuit unit being connected with the output end of the sensor circuit unit.

7. food refuse disposer according to claim 6, it is characterised in that：The sensor circuit unit includes at least phase The inductive sensor and filter capacitor being mutually arranged in parallel, the amplifier circuit unit include at least the first triode, the described 1st The collector of pole pipe is connected through the 15th resistance with the 4th input terminal of the controller module.

8. food refuse disposer according to claim 7, it is characterised in that：The drive circuit module includes at least the Three triodes and thyristor, the second output terminal of the controller module are connected with the base stage of the third transistor, The collector of the third transistor is connected through the 9th resistance with the control pole of the thyristor.

9. food refuse disposer according to claim 5, it is characterised in that：The control device further includes and power supply phase The regulating filtering module of connection.

10. food refuse disposer according to claim 9, it is characterised in that：The control device further includes zero passage inspection Module is surveyed, the zero passage detection module includes be in series twelfth resistor and thirteenth resistor, one end of the thirteenth resistor It is connected with the third input terminal of the controller module.

11. according to any food refuse disposers of claim 1-10, which is characterized in that the series excited machine further includes Stall protector for cutting off working power when series excited machine stall.

12. food refuse disposer according to claim 11, it is characterised in that：The stall protector includes setting In arrangement of clutch, actuating device and the switching device being series in series excited machine circuit on the motor shaft of the series excited machine, When the rotating speed of series excited machine is greater than the set value, the arrangement of clutch promotes actuating device to act and disconnects switching device.

13. food refuse disposer according to claim 12, it is characterised in that：It is opened up on the shell of the actuating device There is limiting slot, the actuating device includes can be along the sliding part that limiting slot moves and the pressure being connected between sliding part and shell Spring, convex block is provided on the sliding part, and the food refuse disposer has normal operating conditions and stall conditions at least two A state, when food refuse disposer is in normal operating conditions, compression spring contraction makes sliding shoe be stably maintained to set Positioning is set, and the convex block of the actuating device and the switch portion of microswitch offset and the switching device made to be held on.

14. food refuse disposer according to claim 13, it is characterised in that：The switching device is microswitch.

15. food refuse disposer according to claim 13, it is characterised in that：The arrangement of clutch include it is a plurality of from Close block, be connected with brake spring between a plurality of clutch blocks, when food refuse disposer is in stall conditions, it is described from Close block makes the sliding shoe of the actuating device be moved to far from motor axis direction under the action of the centrifugal force, the actuating device it is convex Block is detached from the setting position to offset with the switch portion of microswitch, and the switching device disconnects the power circuit of series excited machine.

16. food refuse disposer according to claim 13, it is characterised in that：The sliding part of the actuating device includes It the axis pin that is fixedly installed on one end and is coaxially set in the needle bearing on the axis pin, the rolling of the actuating device Anti-attrition piece is provided in the both ends of the surface of needle bearing.