CN212237563U - Shredding machine - Google Patents

Abstract

The utility model discloses a chopper, which comprises a main machine, a working component and a container; an upper connector is arranged on the bottom end face of the main machine and is in transmission connection with an output shaft of the motor; the working assembly comprises a cutter holder, a lower connector is arranged above the cutter holder, a plurality of chopping knives are arranged below the cutter holder, a knife shaft is arranged on the cutter holder, the lower connector is fixed at the upper tail end of the knife shaft, and the chopping knives are arranged above the knife shaft; the opening side of the container is provided with a mouth part, and the mouth part is detachably connected with the host machine; when the host is connected with the mouth part of the container, the upper connector is connected with the lower connector in a matching way, and the cutter holder is limited and fixed between the host and the mouth part of the container. The shredder has the advantages of simple integral structure, small noise, safe and reliable use, convenient use and the like.

Description

Shredding machine

Technical Field

The utility model belongs to the technical field of domestic appliance and specifically relates to a mincer is related to.

Background

This section merely provides background information related to the present application so as to enable those skilled in the art to more fully and accurately understand the present application, which is not necessarily prior art.

The chopper belongs to a food processor, is used for chopping food, and is widely used for chopping food such as soybean milk, ground dry powder, fruit juice, minced meat, ice shaving and the like.

The existing widely used chopper comprises a main machine (or a base) with a motor and a chopping cup, wherein the upper end surface of the main machine is provided with a mounting position, the mounting position is provided with a lower connector, a cup shaft and a chopping knife fixed on the cup shaft are arranged inside the cup bottom of the chopping cup, and the outer bottom of the chopping cup is provided with an upper connector. The user puts into the cup that cuts up with the food that waits to process and puts the cup that cuts up on the installation position of host computer and make upper connector and lower connector cooperation link to each other to the host computer drives the cup axle and rotates, cuts up the processing through the food in the sword that cuts up the cup that cuts up. The existing chopper has at least the following defects:

1. the user is inconvenient to use. Because the cutter shaft and the chopping knife are integrated at the inner bottom of the chopping cup, the chopping knife can be buried by food after the chopping is finished, so that the food can not be taken out after the chopping cup is detached, and the chopping knife can not be cleaned conveniently.

2. The use noise is large. When the chopper is used, the chopper directly puts the chopper cup on the installation position of the host computer to make the upper connector and the lower connector cooperate and connect, though the limit installation structure can be additionally arranged between the chopper cup and the host computer to avoid the chopper cup from loosening or falling off from the host computer, and the upper connector and the lower connector are ensured to keep an effective cooperation connection relationship, but the limit installation structure additionally arranged between the chopper cup and the host computer cannot limit the chopper cup to upwards jump or horizontally swing relative to the host computer, so that the chopper cup can violently shake along with the work of the motor in the host computer, and then huge noise is easily generated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a chopper, convenient to use and noise are less.

The utility model provides a chopper, which comprises a main machine, a working component and a container; an upper connector is arranged on the bottom end face of the main machine and is in transmission connection with an output shaft of the motor; the working assembly comprises a cutter holder, a lower connector is arranged above the cutter holder, a plurality of chopping knives are arranged below the cutter holder, a knife shaft is arranged on the cutter holder, the lower connector is fixed at the upper tail end of the knife shaft, and the chopping knives are also arranged on the knife shaft; the opening side of the container is provided with a mouth part, and the mouth part is detachably connected with the host machine; when the host is connected with the mouth part of the container, the upper connector is connected with the lower connector in a matching way, and the cutter holder is limited and fixed between the host and the mouth part of the container.

In one embodiment, the periphery of the tool apron is provided with a tool apron side wall, and the top end surface and the bottom end surface of the tool apron side wall are respectively provided with an upper positioning end surface and a lower positioning end surface; the inner side of the mouth part is provided with an inner bearing platform, and the bottom end surface of the main machine is provided with an inner support ring; when the host machine is detachably and fixedly connected with the mouth part, the cutter holder is arranged on the inner bearing platform, and the inner support ring is pressed on the upper positioning end surface to enable the lower positioning end surface to be in contact connection with the inner bearing platform.

In one embodiment, one of the side wall of the tool apron and the inner bearing platform is provided with a positioning groove, and the other one of the side wall of the tool apron and the inner bearing platform is correspondingly provided with a positioning block; when the tool apron is arranged on the inner bearing platform, the positioning block is limited in the positioning groove.

In one embodiment, a sealing groove is formed in the outer side face of the side wall of the tool apron, and a first sealing element is arranged in the sealing groove; when the tool apron is arranged on the inner bearing platform, the side wall of the tool apron is connected with the inner side wall of the opening portion in a sealing mode through the first sealing piece.

In one embodiment, a shaft hole is formed in the center of the tool holder, a shaft sleeve is formed by extending the shaft hole, a bearing is arranged in the shaft sleeve, the cutter shaft is arranged in the bearing, and a second sealing element is arranged between the lower end of the bearing and the cutter shaft.

In one embodiment, the number of the chopping knives is plural, the plural chopping knives are fixed at different heights on the lower end of the knife shaft, and the uppermost chopping knife is arranged close to the knife seat.

In one embodiment, the host comprises a host body and a bottom cover fixed at the lower end of the host body; the main body comprises a shell, and the motor is arranged in the shell; the bottom cover comprises a bottom plate and a surrounding plate arranged on the periphery of the bottom plate, a limiting hole for exposing the upper connector is arranged in the center of the bottom plate, and the surrounding plate is detachably connected with the opening.

In one embodiment, a plurality of fixing brackets are arranged on the upper side surface of the bottom plate, and the motor is fixed in the shell through the fixing brackets when the bottom cover is fixedly connected with the lower end of the main machine body.

In one embodiment, the main machine is also internally provided with a microswitch connected between the motor and the power supply in series and a connecting rod positioned below the microswitch; the bottom plate is provided with a positioning hole for the lower tail end of the connecting rod to pass through, and the upper side surface of the tool apron is provided with a convex part; when the main machine is installed at the mouth part, the lower tail end of the connecting rod is in contact connection with the convex part so that the upper tail end of the connecting rod presses the pressing end of the microswitch.

In one embodiment, a limiting plate is arranged in the shell, and the top wall of the limiting plate is provided with a guide hole which is coaxially arranged with the positioning hole; the lower tail end of the connecting rod is provided with a limiting flange, the size of the limiting flange is larger than the aperture of the positioning hole and the aperture of the guide hole, the connecting rod penetrates through the positioning hole and the guide hole, and the limiting flange is limited between the positioning hole and the guide hole.

In one embodiment, the inner side wall of the enclosing plate is provided with internal threads, and the outer side wall of the mouth part is provided with external threads, and the enclosing plate and the mouth part are detachably connected through the internal threads and the external threads in a screwing mode.

In one embodiment, the electric motor further comprises a handle and a switch assembly electrically connected between the motor and the power supply in series, one end of the handle is fixed on the shell, and the switch assembly is arranged in the handle and close to the shell.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a chopper, overall structure is simple, the noise is less, use safe and reliable and convenient to use. Set the separable independent structure through the work subassembly that will have the shredding knife and container, be convenient for after shredding process accomplishes, through dismantling host computer and container, then can be relaxed take off the work subassembly from the oral area of container, both made things convenient for the dismantlement to take out food and conveniently wash the shredding knife in the container, also can let work subassembly and host computer separation avoid the host computer mistake to start and let the shredding knife injure people in order to improve the safety in utilization. Simultaneously, can dismantle between the oral area through setting up host computer and container and link to each other, with the spacing fixing of blade holder between the oral area of host computer and container, let the work subassembly can be spacing fixed, the container can not take place to rock relative to the host computer in shredding process or even can not take place to remove relative to host computer or container, it can both keep inseparable cooperation continuous to ensure to go up between connector and the lower connector in the horizontal direction and upper and lower direction, can not rock because of the container, the work subassembly takes place to remove and lets the mincer produce huge noise, thereby noise at work is less uses with convenience of customers.

Drawings

FIG. 1 is a schematic view of the internal structure of the shredder of the present disclosure.

FIG. 2 is a perspective exploded view of the shredder.

FIG. 3 is a perspective view of a main body of the shredder.

FIG. 4 is a perspective view of the working components of the shredder.

FIG. 5 is a schematic view of the internal structure of the working components of the shredder.

FIG. 6 is a perspective view of a container of the shredder.

Fig. 7 is a schematic view of the construction of the working assembly when mounted on the container.

FIG. 8 is a schematic view of the internal structure of the main body of the shredder.

Fig. 9 is a schematic structural view of a bottom cover of the main unit.

The designations in the figures have the following meanings: 1-main machine, 11-outer shell, 12-bottom cover, 121-bottom plate, 122-enclosing plate, 1221-internal thread, 123-limiting hole, 124-internal support ring, 125-positioning hole, 126-protecting plate, 127-fixing support, 13-motor, 14-upper connector, 15-microswitch, 16-limiting plate, 17-connecting rod, 171-limiting flange, 18-switch component, 181-power switch, 19-handle, 2-working component, 21-knife seat, 211-knife seat side wall, 212-sealing groove, 213-first sealing element, 214-upper positioning end face, 215-lower positioning end face, 216-positioning groove, 217-shaft hole, 218-shaft sleeve, 219-convex part and 22-bearing, 23-cutter shaft, 24-chopping knife, 25-second sealing element, 26-lower connector, 3-container, 31-sealing tail end, 311-external thread, 32-outer bearing platform, 33-inner bearing platform, 34-positioning block and 35-blocking rib.

Detailed Description

To further clarify the technical solutions and effects adopted by the present application to achieve the intended purpose, the following detailed description is given with reference to the accompanying drawings and preferred embodiments according to the present application. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the description of the present invention, the upper (or top) and the lower (or bottom) are relative concepts, and the description of fig. 1 is taken as a reference for easy understanding.

Referring to fig. 1 and 2, the present invention discloses a shredder, which comprises a main frame 1, a working assembly 2 and a container 3; a motor 13 is arranged in the main machine 1, an upper connector 14 is arranged on the bottom end face of the main machine 1, and the upper connector 14 is in transmission connection with an output shaft of the motor 13; the working assembly 2 comprises a cutter holder 21, a lower connector 26 is arranged above the cutter holder 21, a plurality of chopping knives 24 are arranged below the cutter holder 21, a knife shaft 23 is arranged on the cutter holder 21, the lower connector 26 is fixed at the upper tail end of the knife shaft 21, and the chopping knives 24 are fixed at the lower tail end of the knife shaft 21; the opening side of the container 3 is provided with a mouth part 31, and the main machine 1 is detachably connected with the mouth part 31 of the container 3; when the main body 1 is connected with the mouth part 31 of the container 3, the upper connector 14 is matched and connected with the lower connector 26, the cutter seat 21 is limited and fixed between the main body 1 and the mouth part 31 of the container 3, and the chopping cutter 24 is positioned in the container 3.

The utility model discloses a chopper sets separable independent structure to through the work subassembly 3 that will have shredding knife 24 and container 3, be convenient for accomplish the back at shredding, through dismantling host computer 1 and container 3, then can relax takes off work subassembly 2 from the oral area 31 of container 3, both made things convenient for the dismantlement to take out food and conveniently wash shredding knife 24 from container 3, also can let work subassembly 2 and host computer 1 separation avoid host computer 1 mistake to start and let shredding knife 24 injure the people in order to improve safety in utilization.

And, the utility model discloses a chopper can dismantle between the oral area 31 with host computer 1 and container 3 and link to each other, make simultaneously that blade holder 21 is spacing to be fixed between the oral area 31 of host computer 1 and container 3, consequently, container 3 can not take place to rock relatively host computer 1 in shredding the processing procedure, work subassembly 2 can not take place to remove relatively host computer 1 or container 3 simultaneously, it can both keep inseparable cooperation continuous to ensure to go up between connector 14 and the lower connector 26 at the horizontal direction and upper and lower direction, can not rock because of container 3, work subassembly 2 takes place to remove and lets the chopper produce huge noise, thereby the less convenience of customers of noise of operation uses.

Further in connection with fig. 3-7. An inner bearing platform 33 is arranged on the inner side of the opening part 31 of the container 3; a holder side wall 211 is provided at the periphery of the holder 21, an upper positioning end surface 214 is provided at the top end surface of the holder side wall 211, and a lower positioning end surface 215 is provided at the bottom end surface of the holder side wall 211; the bottom end face of the main machine 1 is provided with an inner support ring 124; when the bottom end face of the main body 1 is detachably and fixedly connected with the mouth portion 31 of the container 3, the working component 2 is placed on the inner bearing platform 33 of the container 3, and the inner support ring 124 is pressed on the upper positioning end face 214 of the tool apron 21 so that the lower positioning end face 215 of the tool apron 21 is in contact connection with the inner bearing platform 33. Therefore, through host computer 1 and the fixed being continuous with container 3 detachable thereby carry out spacing fixed with blade holder 21 in the up-and-down direction, avoid work subassembly 2 to take place to remove and send great noise in the shredding process in the up-and-down direction.

Furthermore, one of the side wall 211 of the tool holder and the inner platform 33 is provided with a positioning groove 216, and the other is correspondingly provided with a positioning block 34, when the working assembly 2 is placed on the inner platform 33 of the container 3, the positioning block 34 is limited in the positioning groove 216 to prevent the tool holder 21 from rotating relative to the inner platform 33, and prevent the tool holder 21 from moving horizontally during the shredding process to generate loud noise. For example, at least 2 positioning grooves 216 are formed in the side wall 211 of the tool holder, at least 2 positioning blocks 34 are correspondingly formed on the inner support platform 33, and each positioning block 34 is limited in the positioning groove 216 when the tool holder 21 is placed on the inner support platform 33.

Furthermore, a sealing groove 212 is disposed on an outer side surface of the holder sidewall 211, a first sealing member 213 (for example, the first sealing member 213 is a sealing strip or an O-ring) is disposed in the sealing groove 212, when the holder 21 is placed on the inner platform 33, the holder sidewall 211 is connected to an inner sidewall of the mouth portion 31 through the first sealing member 213, and the first sealing member 213 can limit the holder 21 from moving horizontally on the inner platform 33 and can also play a sealing role to ensure that food in the container 3 does not leak.

It should be noted that: the lower positioning end surface 215 is generally directly disposed on the bottom side surface of the tool holder 21; of course, the seal groove 212 may be provided so as to protrude from the outer surface of the holder sidewall 211, and in this case, the lower end surface of the seal groove 212 is not necessarily flush with the bottom side surface of the holder 21, but the lower end surface of the seal groove 212 is still regarded as a part of the bottom side surface of the holder 21, and the lower end surface of the seal groove 212 serves as the lower positioning end surface 215.

In addition, the mouth 31 of the container 3 and the lower end of the main body 1 may be fixedly connected by any detachable structure. For example, the inner wall of the lower end of the main body 1 is provided with a female screw 1221, the outer wall of the mouth portion 31 is correspondingly provided with a male screw 311, and the main body 1 is screwed with the male screw 311 of the mouth portion 31 through the female screw 1221. Even more, the outer bearing platform 32 is provided on the outer side of the mouth 31 of the container 3, so that the lower end of the main body 1 is positioned on the outer bearing platform 32, and the shredder has a continuous and uniform overall appearance characteristic in the overall appearance.

A shaft hole 217 is formed in the center of the tool holder 21, a shaft sleeve 218 is formed by extending the hole wall of the shaft hole 217, a bearing 22 is arranged in the shaft sleeve 218, the cutter shaft 23 is arranged in the bearing 22 so that the cutter shaft 23 rotates relative to the shaft sleeve 218 according to the bearing 22, a second sealing member 25 (for example, the second sealing member 25 is a shaft sealing ring) is arranged between the lower end of the bearing 22 and the cutter shaft 23, and a gap between the cutter shaft 23 and the bearing 22 is sealed by the second sealing member 25, so that food in the container 3 is prevented from permeating into the bearing along with the rotation of the cutter shaft 23 and affecting the operation of the.

The number of the shredding knives 24 is plural, the plural shredding knives 24 are fixed at different heights at the lower end of the knife shaft 23, and the uppermost one of the shredding knives 24 is disposed adjacent to the knife seat 21, so that when the shredder is used, food is adjacent to the knife seat 21 by gravity when the main body 1 is inverted with the container 3 positioned above the main body 1, and thus the food can be more sufficiently shredded by the shredding knives 24 adjacent to the knife seat 21. It will also be appreciated that each of the shredding knives 24 need not be the same size, as each of the shredding knives 24 is fixed to a different height of the knife shaft 23, so that the shredding process is carried out simultaneously by each of the shredding knives 24 on food items at different heights in the container 3, thereby increasing the efficiency of the shredding process.

The inner side wall of the container 3 is also provided with a plurality of blocking ribs 35, and the blocking ribs 35 are used for generating certain blocking effect on the food so as to turn over the food in the chopping process, thereby improving the chopping efficiency.

As further shown in connection with fig. 8 and 9. The main body 1 comprises a main body and a bottom cover 12, the main body 11 comprises a shell 11, the motor 13 is arranged in the shell 11, and a transmission structure, such as a speed reducing mechanism, can be arranged between the upper connector 14 and an output shaft of the motor 13 as required. The bottom lid 12 includes a bottom plate 121 and a surrounding plate 122 provided around the bottom plate 121, an internal thread 1221 is provided on the inner side wall of the surrounding plate 122 to be screwed with the mouth portion 31 of the container 3, and an internal support ring 124 is provided on the lower side surface of the bottom plate 121. A stopper hole 123 for exposing the upper connector 14 is provided in the center of the bottom plate 121. During the assembly, assemble motor 13 in shell 11 earlier, install connector 14 again and make connector 14 and motor 13's output shaft among spacing hole 123, then fix bottom 12 in shell 11 the lower extreme can, assembly operation is very simple, the dismouting maintenance in the later stage of also being convenient for.

Further, a plurality of fixing brackets 127 are provided on the upper side of the bottom plate 121, and when the bottom cover 12 is fixed to the lower end of the housing 11, the motor 13 is pressed into the housing 11 by the fixing brackets 127, so that the motor 13 is conveniently fixed in the housing 11, and the fixing brackets 127 help to reduce vibration generated by the motor 13 to reduce noise generated during shredding. Of course, the bottom cover 12 may be fixedly mounted to the lower end of the housing 11 by screws passing through the fixing bracket 127 from the bottom to the top and then screwed into the housing 11.

In order to improve the use safety, a micro switch 15 connected in series between the motor 13 and the power supply is also arranged in the main machine 1. The microswitch 15 is normally open to keep the off state between the motor 13 and the power supply, and only when the pressing end of the microswitch 15 is pressed, the microswitch 15 can be switched to the on state to connect the motor 13 and the power supply. In addition, a connecting rod 17 positioned below the microswitch 15 is arranged in the main machine 1, and a positioning hole 125 for allowing the lower tail end of the connecting rod 17 to pass through is arranged on the bottom plate 121; a convex part 219 is arranged on the upper side surface of the tool apron 21; when the main body 1 is mounted on the container 3, the lower end of the link 17 is in contact with the projection 219 so that the upper end of the link 17 presses the pressing end of the microswitch 15, thereby switching the microswitch 15 to the conducting state. That is, when the main body 1 is not correctly installed on the container 3, the motor 13 cannot be started to start the operation of the motor 13, and only after the main body 1 is correctly installed on the container 3, the motor 13 can be started to start the operation of the motor 13 through the power switch, thereby improving the use safety.

A guiding and limiting mechanism for moving the connecting rod 17 up and down is also arranged between the positioning hole 125 and the microswitch 15. For example, a stopper plate 16 is provided in the housing 11, a guide hole provided coaxially with the positioning hole 125 is provided in a top wall of the stopper plate 16, and the link 17 is provided through the positioning hole 125 and the guide hole. Even, the lower end of the connecting rod 17 is provided with the limiting flange 171, the size of the limiting flange 171 is larger than the aperture of the positioning hole 125 and the aperture of the guiding hole, when assembling, the upper end of the connecting rod 17 passes through the guiding hole to enable the limiting flange 171 to be positioned below, and then the bottom cover 12 is installed at the lower end of the shell 11, so that the limiting flange 171 is limited between the positioning hole 125 and the guiding hole, and the situation that the connecting rod 17 is dropped and lost to cause the cutter to be incapable of use can be avoided.

Furthermore, in order to improve the safety of use and prevent the user from accidentally inserting a finger into the positioning hole 125 during use, the lower side of the bottom plate 121 of the bottom cover 12 is provided with two protection plates 126 located at two opposite sides of the positioning hole 125, and the distance between the two protection plates 126 is small to prevent the finger from being accidentally inserted into the positioning hole 125.

In addition, the protrusion 219 is configured as a ring structure on the upper side of the knife seat 21, so that when the main body 1 is mounted on the container 3, the protrusion 219 is positioned between the two protection plates 126 and aligned with the positioning hole 125, so that the top end surface of the protrusion 219 abuts against the lower end of the connecting rod 17, and the connecting rod 17 moves upwards to press the pressing end of the micro switch 15, thereby providing the operational reliability of the shredder.

The utility model discloses a chopper, the use of its a preferred is as follows: the mouth part 31 of the container 3 is upward, food to be shredded is placed into the container 3, then the working assembly 2 is placed on an inner bearing platform 33 of the container 3, finally the lower end of the main machine 1 is installed on the mouth part 31 of the container 3, after the installation is finished, the shredder is inverted to enable the main machine 1 to be below and the container 3 to be above the main machine 1, the working assembly 2 is enabled to be the bottom of the container 3, at the moment, the food is closer to the shredding knife 24 under the action of gravity, and the motor 13 is started to start shredding. After the processing is finished, the chopper is properly shaken to prevent the chopped food from being adhered to the chopper 24, then the chopper is turned over again, the main machine 1 is arranged above the container 3 below the main machine 1, the main machine 1 can be detached from the container 3 at the moment, the food in the container 3 can be conveniently taken out after the working assembly 2 is taken down, then the container 3 and the working assembly 2 are respectively cleaned, and the operation is simple and the use is convenient.

Again as shown in connection with figures 1-3. The outer side of the main body is provided with a handle 19, and one end of the handle 19 is fixed on the outer side of the shell 11. The handle 19 is provided for the convenience of the user to hold the handle 19 with one hand to turn the shredder over and then to start the motor 13 to start the shredding operation, and for the convenience of the user to hold the handle 19 and shake the shredder to reduce the adhesion of food to the cutter shaft 23 and the shredding cutter 24, thereby further facilitating the use of the user.

Furthermore, a switch component 18 electrically connected in series between the motor 13 and the power supply is arranged in the handle 19, a power switch 181 is arranged on the switch component 18, and the power switch 181 is arranged on the handle 19, so that a user can conveniently operate the power switch 181 to start or stop the motor 13 when holding the handle 19 for use in shredding. In addition, switch module 18 is close to shell 11 and sets up to let switch 181 be located the position that is close to shell 11 on handle 19, not only be favorable to utilizing handle 19 to be close to the one end of shell 11 to have more intensity and protect switch module 18 and can not damaged, still be favorable to convenience of customers to press the operation use to switch 181 when handheld handle 19.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (12)

1. A shredder comprising a main body, a working assembly and a container;

an upper connector is arranged on the bottom end face of the main machine and is in transmission connection with an output shaft of the motor;

the working assembly comprises a cutter holder, a lower connector is arranged above the cutter holder, a plurality of chopping knives are arranged below the cutter holder, a knife shaft is arranged on the cutter holder, the lower connector is fixed at the upper tail end of the knife shaft, and the chopping knives are also arranged on the knife shaft;

the opening side of the container is provided with a mouth part, and the mouth part is detachably connected with the host machine;

when the host is connected with the mouth part of the container, the upper connector is connected with the lower connector in a matching way, and the cutter holder is limited and fixed between the host and the mouth part of the container.

2. The shredder of claim 1, wherein the periphery of the seat defines a seat sidewall having top and bottom end surfaces with upper and lower locating end surfaces, respectively;

the inner side of the mouth part is provided with an inner bearing platform, and the bottom end surface of the main machine is provided with an inner support ring;

when the host machine is detachably and fixedly connected with the mouth part, the cutter holder is arranged on the inner bearing platform, and the inner support ring is pressed on the upper positioning end surface to enable the lower positioning end surface to be in contact connection with the inner bearing platform.

3. The shredder of claim 2, wherein one of the side wall of the holder and the inner platform is provided with a positioning slot and the other is correspondingly provided with a positioning block;

when the tool apron is arranged on the inner bearing platform, the positioning block is limited in the positioning groove.

4. The shredder of claim 2, wherein a seal groove is provided in the outer side of the side wall of the holder, and a first seal is provided in the seal groove;

when the tool apron is arranged on the inner bearing platform, the side wall of the tool apron is connected with the inner side wall of the opening portion in a sealing mode through the first sealing piece.

5. A shredder according to claim 1, wherein the holder has an axial bore centrally formed therein, a sleeve extending from the bore wall of the axial bore, a bearing disposed within the sleeve, the arbor disposed within the bearing, and a second seal disposed between a lower end of the bearing and the arbor.

6. A shredder according to claim 1, wherein the number of shredding knives is plural, the plural shredding knives being fixed at different heights at the lower end of the knife shaft, and the uppermost one of the shredding knives being disposed adjacent the knife holder.

7. A shredder according to any one of claims 1 to 6, wherein the main body comprises a main body and a bottom cover secured to a lower end of the main body;

the main body comprises a shell, and the motor is arranged in the shell;

the bottom cover comprises a bottom plate and a surrounding plate arranged on the periphery of the bottom plate, a limiting hole for exposing the upper connector is arranged in the center of the bottom plate, and the surrounding plate is detachably connected with the opening.

8. A shredder according to claim 7, wherein a plurality of mounting brackets are provided on the upper side of the base, the motor being mounted within the housing by the mounting brackets when the base cover is fixedly connected to the lower end of the main body.

9. The shredder of claim 7, wherein the main body further comprises a micro switch connected in series between the motor and the power supply and a connecting rod located below the micro switch; the bottom plate is provided with a positioning hole for the lower tail end of the connecting rod to pass through, and the upper side surface of the tool apron is provided with a convex part;

when the main machine is installed at the mouth part, the lower tail end of the connecting rod is in contact connection with the convex part so that the upper tail end of the connecting rod presses the pressing end of the microswitch.

10. The shredder of claim 9, wherein a retainer plate is disposed within the housing, and a top wall of the retainer plate is provided with a pilot hole disposed coaxially with the pilot hole;

the lower tail end of the connecting rod is provided with a limiting flange, the size of the limiting flange is larger than the aperture of the positioning hole and the aperture of the guide hole, the connecting rod penetrates through the positioning hole and the guide hole, and the limiting flange is limited between the positioning hole and the guide hole.

11. A shredder according to claim 7, wherein the inner wall of the shroud is internally threaded and the outer wall of the mouth is externally threaded, the internal threads being threadably engaged with the external threads to releasably secure the shroud to the mouth.

12. The shredder of claim 7, further comprising a handle and a switch assembly electrically connected in series between the motor and the power supply, one end of the handle being secured to the housing, and the switch assembly being disposed within the handle and adjacent the housing.

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