CN115608485A - Small-size storage medium destroyer - Google Patents

Abstract

The invention provides a small storage medium destroying machine, which comprises a frame, wherein a coarse material processing device is arranged on the frame and comprises: the device comprises a coarse crushing device used for crushing the storage medium for one time, and a screening device used for continuously screening the materials obtained by crushing for one time; the fine material processing device is arranged on the frame and comprises: the material magnetic separation device is used for carrying out magnetic separation on fine materials obtained through continuous screening, the fine material crushing device is used for carrying out secondary crushing on non-magnetic materials obtained through magnetic separation, and the material collecting device is used for collecting the materials obtained through secondary crushing. The invention can destroy and process the waste storage medium which can not leak data into fragments by a physical crushing mode; the unique two-stage crushing of screening and sorting can greatly improve the crushing efficiency and reduce the crushing noise, and the power of the motor is reduced under the action of the adjustable gate and the material sorting machine, so that the volume and the weight of the equipment are greatly reduced.

Description

Small-size storage medium destroyer

Technical Field

The invention belongs to the technical field of data storage medium destruction, and particularly relates to a small storage medium destroying machine.

Background

Office activities create obsolete storage media with data inside that cannot be revealed by businesses or individuals requiring destruction. Because the waste storage medium is hard, a common grinder cannot grind the waste storage medium, and the destruction modes such as hammering an electric drill, drilling and the like by a hammer are unreliable; and if the materials are transported to a large-sized pulverizer to be pulverized after being concentrated, the risk of secret leakage and the like exists in the intermediate link, and the intermediate link is very inconvenient.

Therefore, it is an urgent technical problem for those skilled in the art to design a small-sized shredder that can be used in an office for physically shredding a hard data storage material such as a mechanical storage medium into a desired particle size (destruction requirement).

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the small-sized storage medium destroying machine can effectively destroy the waste storage medium, has a more miniaturized overall structure, and meets the requirement of daily storage medium destruction for general household and commercial use.

The invention is realized by the following steps: a compact storage media destroyer comprising a frame, the compact storage media destroyer further comprising:

coarse material processing apparatus, coarse material processing apparatus install in the frame, it includes:

a coarse crushing device for crushing the storage medium once,

the screening device is used for continuously screening the materials obtained by primary crushing;

fine material processing apparatus, fine material processing apparatus install in the frame, it includes:

a material magnetic separation device for carrying out magnetic separation on fine materials obtained by continuous screening,

a fine material crushing device for performing secondary crushing on the nonmagnetic material obtained by magnetic separation,

and the collecting device is used for collecting the materials obtained by secondary crushing.

Further, the coarse crushing apparatus includes:

a shredder housing fixedly mounted;

two movable cutter shafts are rotatably arranged in the crusher shell in parallel;

two crushing power devices are arranged outside the crusher shell and are connected with the movable cutter shafts in a one-to-one correspondence manner;

the movable cutters are provided with odd numbers on one movable cutter shaft, and even numbers on the other movable cutter shaft; the movable blades on the two movable blade shafts are arranged in a staggered manner and form partial overlapping;

the two regulating gate mechanisms are arranged on the crusher shell and are provided with two comb gates capable of swinging around a shaft, wherein one comb gate is provided with odd slots matched with odd moving blades, and the other comb gate is provided with even slots matched with even moving blades;

and the crushing discharge hopper is fixedly installed, the top opening of the crushing discharge hopper is positioned below the overlapped part of the movable blades, and the bottom opening of the crushing discharge hopper extends to the upper part of the feeding side of the screening device towards one side.

Further, the damper mechanism includes:

two gate shafts are rotatably mounted on the crushing shell and are mounted in one-to-one correspondence with the comb gates;

the trip piece is arranged on at least one of the gate shafts;

the pulling piece is provided with at least two pulling pieces, one end of each pulling piece is connected with the crushing shell, and the other end of each pulling piece is connected with the end part of the corresponding trip piece.

Further, the pulling piece is a spring or an electric push rod.

Further, the screening apparatus includes:

the fixing ring is fixedly installed, a feed inlet is formed in the bottom of the fixing ring, a discharge outlet is formed in the top of the fixing ring, and an annular baffle is arranged on the inner side of the fixing ring;

the rotary screen is coaxially sleeved on the periphery of the fixing ring, a baffle is arranged on the outer side of the rotary screen, a plurality of material shifting plates are arranged on the inner circular surface of the rotary screen, and a material ring cavity is formed between the material shifting plates and the material shifting plates;

the screening power device is fixedly arranged and drives the rotary screen to rotate;

the top side of the feeding hopper extends to the lower part of the discharging side, and the bottom of the feeding hopper is positioned above the feeding side of the coarse crushing device.

Further, material magnetic separation device includes:

a conveyor belt having a low-level horizontal portion, an inclined portion, and a high-level horizontal portion disposed along a conveying direction, the low-level horizontal portion being located below a discharge side of the screening device;

the magnetic attraction device is fixedly arranged inside the high-level horizontal part.

Further, the coarse material processing device further comprises: an intermediate collection device, the intermediate collection device comprising:

the transition hopper is arranged between the low-level horizontal part of the conveying belt and the discharge side of the screening device;

the funnel gate is movably arranged at the bottom of the transition funnel;

the material collecting box is fixedly arranged below the low-level horizontal part of the conveying belt.

Further, the fines comminution apparatus comprises:

the fine crushing funnel is fixedly arranged below the discharge side of the material magnetic separation device;

the fine crushing cavity is fixedly arranged below the fine crushing hopper, and a crushing knife is arranged in the fine crushing cavity;

and the fine crushing motor is fixedly arranged on the fine crushing cavity and drives the crushing cutter to rotate.

Furthermore, the casing is still installed to the outside of frame, install the charge door of taking the shielding plate on the casing for control button of control coarse fodder processing apparatus and fine material processing apparatus, and be used for showing the display screen of coarse fodder processing apparatus and fine material processing apparatus operational data.

Furthermore, the rack is divided into a first rack and a second rack which can be assembled, the shell is divided into a first shell and a second shell, the control button is divided into a first button and a second button, and the display screen is divided into a first display screen and a second display screen;

the charging opening, the first button and the first display screen are all arranged on the first machine shell, and the first machine shell and the coarse material processing device are all arranged on the first machine frame;

the second button and the second display screen are both installed on the second machine shell, and the second machine shell and the fine material processing device are both installed on the second machine frame.

The invention has the following beneficial effects:

1. the invention is suitable for office environments, and can destroy waste storage media with data leakage incapability in daily office in a physical crushing mode and process the waste storage media into chips with diameters of 1 to 16mm; the two-stage crushing by unique screening and sorting can greatly improve the crushing efficiency and reduce the crushing noise, the power of the motor is reduced under the action of the adjustable gate and the material sorting machine, the volume and the weight of equipment are greatly reduced, and particularly, the unique assembling mode is adopted, so that the crusher is very simple to move and allocate, and is suitable for being used in office occasions.

2. The feeding side of the coarse crushing device can greatly improve the crushing efficiency, greatly reduce the volume and weight of equipment and use electric power by controlling the structure of the open gate, and is particularly suitable for office occasions.

3. The material screening device disclosed by the invention realizes screening and conveying of crushed material particles in a drum screen conveying mode, has the advantages of high screening efficiency, strong adaptability, simple structure and convenience in adjustment, and can effectively prevent the crushed particles from blocking screening holes.

4. The material magnetic separation device has the advantages that the rotating speed of the fine crushing device is higher, the crushing efficiency is higher, the service life of a cutter is longer, and the overall weight is lighter due to the magnetic separation mode.

Drawings

Fig. 1 is a perspective view of the internal structure of a small storage medium destruction machine according to the present invention;

fig. 2 is a perspective view showing the structure of a coarse material processing device in the small storage medium destruction machine shown in fig. 1;

FIG. 3 is a top view of the coarse material processing apparatus shown in FIG. 2;

FIG. 4 isbase:Sub>A sectional view of the structure taken along line A-A in FIG. 3;

FIG. 5 is a perspective view showing the structure of a coarse crushing apparatus in the coarse material processing apparatus shown in FIG. 2;

fig. 6 is a perspective view showing the structure of a fine material processing apparatus in the small storage medium destruction machine shown in fig. 1;

FIG. 7 is a perspective view of the screening apparatus of the coarse material processing apparatus shown in FIG. 2, viewed from above;

FIG. 8 is a perspective view of the screening apparatus of the coarse material processing apparatus of FIG. 2 in a bottom view;

fig. 9 is a perspective view showing the structure of the exterior of the small storage medium destruction machine according to the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 9, a small storage medium destruction machine includes a frame 3, a coarse material processing device 1, and a fine material processing device 2.

The coarse material processing apparatus 1 is mounted on a frame 3, and includes:

a coarse crushing device 10 for crushing the storage medium once and a screening device 11 for continuously screening the material obtained by crushing once.

As shown in fig. 2 to 5, the rough grinding device 10 includes a grinder housing 103, a movable blade shaft 113, a grinding power device, a movable blade 102, a damper mechanism and a grinding discharge hopper 116. The pulverizer housing 103 is fixedly installed.

Two movable shafts 113 are rotatably mounted in parallel in the crusher housing 103.

Two crushing power devices are mounted outside the crusher housing 103, and each crushing power device comprises a speed reducer 105 and a crushing motor 106. The main shaft of the grinding motor 106 is connected to the input shaft of the speed reducer 105, and the output shaft of the speed reducer 105 is connected to the corresponding movable knife shaft 113.

The moving blades 102 are provided with odd numbers, such as 1, 3 and 5, on one moving blade shaft 113, and even numbers, such as 2, 4 and 6, on the other moving blade shaft 113. The moving blades 102 on the two moving blade shafts 113 are staggered and partially overlapped. The clearance between the movable blades 102 is very small, so that the aim of shearing and crushing is fulfilled.

Two regulating gate mechanisms are arranged on the crusher shell 103 and are provided with two comb gates 112 capable of swinging around a shaft, wherein one comb gate 112 is provided with odd-numbered slots matched with the odd-numbered moving blades 102, and the other comb gate 112 is provided with even-numbered slots matched with the even-numbered moving blades 102. The damper mechanism includes a damper shaft 118, a trigger 108 and a pull 114. Two gate shafts 118 are rotatably mounted on the pulverizing casing 103, and are mounted in one-to-one correspondence with the comb gates 112. The triggers 108 are mounted in two on the gate shaft 118 and are located at respective axial end positions. Four pulling members 114 are provided, one end of each pulling member being connected to the crusher housing 103 and the other end thereof being connected to the end of the corresponding trip member 108. The pull 114 is a spring or an electric push rod.

The comb teeth of the comb gate 112 are located between the two moving blades 102 for forming an effective passage for the material to pass through. The size of the effective channel is changed according to the adjustment of the angle of the comb gate 112. The specific principle is as follows:

under the condition that the particles are large, the movable knife 102 pulls the particles into the overlapping area of the movable knife, and the particles are automatically squeezed open or the electric push rod is utilized to squeeze open the comb-shaped gate 112, so that the crushing is completed.

Under the condition that few particles or small particles exist, the comb gate 112 swings under the action of the drawing piece 114 or the electric push rod, so that the comb gate 112 is close to the outer edge of the opposite movable knife 102, the coarse crushing area is small, the particles are prevented from directly falling from the gap of the movable knife 102, and the crushing efficiency is greatly improved.

The periphery of the moving blade 102 is provided with a plurality of blade teeth, the distance between the root and the center of the blade teeth is smaller than the distance between the blade part and the center, and when the moving blades 102 on the two moving blade shafts 113 rotate in opposite directions, the blade teeth move from top to bottom at the overlapped part. The material falls between the two sets of moving blades 102 from the upper part of the middle part of the crusher shell 103 and is crushed under the rotary cutting action of the moving blades 102.

The crushing discharge hopper 116 is fixedly installed, the top opening of the crushing discharge hopper is positioned below the overlapped part of the movable blade 102, and the bottom opening of the crushing discharge hopper extends to one side to the upper part of the feeding side of the screening device 11.

In order to prevent larger material fragments from being clamped between the movable cutters, a plurality of removers 117 are arranged in the grinder shell 103 according to the number of the movable cutters 102, each remover 117 is positioned in a gap between two movable cutters 102, the gap between the top of each remover and the outer circular surface of the movable cutter shaft 113 is small, and the gaps between the two sides of each remover and the side surfaces of the movable cutters 102 are also small, so that when the material fragments are clamped at the above positions, the material fragments can be cleaned by the removers 117 along with the rotation of the movable cutter shaft 113.

As shown in fig. 7 and 8, the screening apparatus 11 includes a stationary ring 108, a trommel 110, a screening power unit 115 and a hopper 111.

The fixing ring 108 is fixedly arranged on the frame, the bottom of the fixing ring is provided with a feeding hole 127, the top of the fixing ring is provided with a discharging hole 129, and the inner side of the fixing ring is provided with an annular baffle. The trommel 110 is coaxially sleeved on the periphery of the fixed ring 108, a baffle is arranged on the outer side of the trommel, a plurality of material poking plates 128 are arranged on the inner circular surface of the trommel, and a material ring cavity is formed between the two. The screening power unit 115 is fixedly installed and drives the trommel 110 to rotate. The screening power device 115 is a motor. The top side of the feed hopper 111 extends below the discharge side and the bottom is above the feed side of the coarse comminution apparatus 10.

After the material is coarsely crushed, the material falls into the feed opening 127 through the crushing discharge hopper 116 below, under the screening of the drum screen 110, smaller particles directly fall outside through the drum screen, and large particles are driven by the material shifting plate 128 to roll upwards, then fall down at the top and fall into the feed hopper 111 from the discharge opening 129, and then return to the coarse crushing device 10 again, so that continuous circular crushing is realized until the screening requirement is met. The aperture of the trommel 110 can be selected between 4-18mm according to practical requirements. The rotating speed of the rotary screen 110 can be selected from 6 to 60 revolutions per minute, and the purpose is to stack materials at a charging opening as soon as possible and increase the crushing efficiency.

It should be noted that for better discharging, a splash hopper 122 may be further disposed below the trommel 110, so as to reduce the splashing of particles when entering the next step.

As shown in fig. 6, the fine material processing apparatus 2 is mounted on the frame 3, and includes a material magnetic separation apparatus 20 for magnetically separating fine materials obtained by continuous screening, a fine material crushing apparatus 21 for secondarily crushing nonmagnetic materials obtained by magnetic separation, and an aggregate apparatus 22 for collecting materials obtained by secondary crushing.

The material magnetic separation device 20 comprises a conveying belt 230 and a magnetic attraction device 207.

The conveyor belt 230 has a low-level horizontal portion, an inclined portion, and a high-level horizontal portion provided along the conveying direction, the low-level horizontal portion being located below the discharge side of the screening device 11. The magnetic attraction device 207 is fixedly installed inside the high-level horizontal part. The lower level part receives the smaller granular materials screened out by the drum screen 110, and then reaches the upper level part through the inclined part, and because the magnetic attraction device 207 is arranged in the upper level part, the magnetic granules in the granules can be attracted by magnetic force, and then continuously bypass the front end and fall into the scrap iron collection box 221 below away from the magnetic attraction device 207. While the non-magnetic particles fall off the surface of the conveyor belt at a moment of bypassing the end. The belt of the conveyor belt 230 is provided with a material conveying plate for carrying the material upward.

The fine material crushing apparatus 21 includes a fine crushing hopper 206, a fine crushing chamber 205 and a fine crushing motor 203.

The fine crushing funnel 206 is fixedly arranged below the discharge side of the material magnetic separation device 20. The fine crushing chamber 205 is fixedly installed below the fine crushing hopper 206, and a crushing knife is provided inside the fine crushing chamber. The bottom of the fine crushing cavity 205 is provided with a screen with different aperture diameters required by different destruction requirements. The fine crushing motor 203 is fixedly installed on the fine crushing chamber 205 and drives the crushing blade to rotate. The non-magnetic particles fall into the fine crushing hopper 206 and then enter the fine crushing chamber 205, and a part of the particles are crushed by the crushing blade. The crushing ability of the crushing blades is stronger than that of the moving blades 102, and thus finer particles are obtained. Meanwhile, the material does not contain iron chips which are particles with high hardness, so that the crushing knife can work at a higher rotating speed, and the use of the crushing knife is prolonged.

The collecting device 22 is preferably a bag dust collector with a super filter screen, and the power supply is turned off, the cabinet door and the dust collector are opened, and a new bag is replaced to operate again when a certain amount of dust is reached and the dust collector is full of the dust.

The coarse material handling device 1 further comprises an intermediate collecting device 12, the intermediate collecting device 12 comprising a transition hopper 124, a hopper gate 126 and a collecting box 120.

A transition funnel 124 is provided between the low level portion of the conveyor belt 230 and the outfeed side of the screening device 11. The funnel gate 126 is movably mounted at the bottom of the transition funnel 124. The collection box 120 is fixedly installed below the low level horizontal portion of the conveyor belt 230, i.e., below the transition hopper 124. When the loading is closed, i.e. the hopper gate 126 is closed, the material can be temporarily retained in the transition hopper 124, at which point the conveyor belt 230 is removed and the coarse material handling device can be used independently. When the conveyer belt 230 is put back to the original position, the hopper gate 126 is opened again to carry out normal magnetic separation; if fine comminution is not desired, the material is directed to the collection bin 120 below.

As shown in fig. 9, a casing 4 is further installed outside the frame 3, and a feed inlet 5 with a baffle plate, a control button 6 for controlling the coarse material processing device 1 and the fine material processing device 2, and a display screen 7 for displaying operation data of the coarse material processing device 1 and the fine material processing device 2 are installed on the casing 4.

Preferably, the rack 3 is divided into a first rack 31 and a second rack 32 which can be connected in a splicing manner, the housing 4 is divided into a first housing 41 and a second housing 42, the control button 6 is divided into a first button 61 and a second button 62, and the display screen 7 is divided into a first display screen 71 and a second display screen 72.

The feed inlet 5, the first button 61 and the first display screen 71 are all mounted on the first housing 41, and the first housing 41 and the coarse material processing device 1 are all mounted on the first rack 31. The second button 62 and the second display 72 are mounted on the second housing 42, and the second housing 42 and the fines handling device 2 are mounted on the second frame 32. The adoption adopts the mode of magnetism to assemble, perhaps the buckle mode is assembled etc. and is assembled the mode and can make the coarse fodder processing part and the fine material processing part exclusive use of this device, has better flexibility.

It will be appreciated that the present invention includes electrical means and therefore necessarily also includes a first controller for controlling the operation of the coarse material processing apparatus 1 and a second controller to which both the first button 61 and the first display screen 71 are electrically connected. Similarly, the second controller is used for controlling the fine material processing device 2, and the second button 62 and the second display screen 72 are electrically connected with the second controller.

The controller can control the feeding speed, and can prevent the door, the cover and the like from being opened in the normal operation process; once the door and the cover are opened, the crushing is stopped immediately; the working state can be detected, the feeding mechanism can be controlled to operate, and relevant information can be displayed.

Before transportation and moving, the power supply can be switched on, the first rack 31 and the second rack 32 are unlocked by operation, the first rack and the second rack are separated, and then the power supply is switched off and then the first rack and the second rack are moved separately; the two are aligned after the destination is reached, and then the two are locked and fastened after the power supply is switched on to operate.

Under the condition that the two frames need to work independently and separately, the first frame 31 and the second frame 32 are disassembled after the power is switched on and unlocked, and the two frames are respectively carried to the destination and then are respectively switched on to operate according to the operation prompt; after the two are aligned again and the power is switched on, the two are locked and fastened.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention.

Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

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

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements.

The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A small storage medium destroyer comprising a frame (3), characterized in that; further comprising:

coarse material processing apparatus (1), coarse material processing apparatus (1) is installed on frame (3), and it includes:

a coarse crushing device (10) for crushing the storage medium once,

a screening device (11) for continuously screening the materials obtained by primary crushing;

-a fine material handling device (2), said fine material handling device (2) being mounted on said frame (3) and comprising:

a material magnetic separation device (20) for carrying out magnetic separation on fine materials obtained by continuous screening,

a fine material crushing device (21) for secondarily crushing the nonmagnetic material obtained by magnetic separation,

and the collecting device (22) is used for collecting the materials obtained by secondary crushing.

2. A small storage medium destroyer as claimed in claim 1, characterized in that the coarse comminution means (10) comprise:

a shredder housing (103), the shredder housing (103) being fixedly mounted;

two movable cutter shafts (113), wherein the two movable cutter shafts (113) are rotatably arranged in the crusher shell (103) in parallel;

two crushing power devices are arranged outside the crushing machine shell (103) and are connected with the movable cutter shafts (113) in a one-to-one corresponding mode;

the number of the moving blades (102) is odd on one moving blade shaft (113), and the number of the moving blades (102) is even on the other moving blade shaft (113); the movable blades (102) on the two movable blade shafts (113) are arranged in a staggered manner and form partial overlapping;

two regulating gate mechanisms are arranged on the crusher shell (103) and are provided with two comb gates (112) capable of swinging around a shaft, wherein one comb gate (112) is provided with odd slots matched with the odd moving blades (102), and the other comb gate (112) is provided with even slots matched with the even moving blades (102);

and the crushing discharge hopper (116) is fixedly installed, the top opening of the crushing discharge hopper (116) is positioned below the overlapped part of the movable blade (102), and the bottom opening of the crushing discharge hopper extends to the upper part of the feeding side of the screening device (11) towards one side.

3. The small storage media destroyer of claim 2, wherein the damper mechanism comprises:

two gate shafts (118), wherein the two gate shafts (118) are rotatably arranged on the crushing shell (103) and are arranged corresponding to the comb gates (112) one by one;

a trigger (108), at least one of the triggers (108) being mounted on the gate shaft (118);

the pulling piece (114), the pulling piece (114) is provided with at least two, wherein one end is connected with the crusher shell (103), and the other end is connected with the end part of the corresponding trip piece (108).

4. A compact storage medium destroyer as claimed in claim 3, characterized in that the pulling element (114) is a spring or an electric push rod or the like.

5. A small storage medium destroyer as claimed in claim 1, characterized in that the screening device (11) comprises:

the fixing ring (108) is fixedly arranged, a feeding hole (127) is formed in the bottom of the fixing ring (108), a discharging hole (129) is formed in the top of the fixing ring, and an annular baffle is arranged on the inner side of the fixing ring;

the rotary screen (110) is coaxially sleeved on the periphery of the fixing ring (108), a baffle is arranged on the outer side of the rotary screen (110), a plurality of material poking plates (128) are arranged on the inner circular surface of the rotary screen, and a material ring cavity is formed between the material poking plates and the material ring cavity;

the screening power device (115), the screening power device (115) is fixedly arranged and drives the rotary screen (110) to rotate;

a feed hopper (111), the top side of the feed hopper (111) extending below the discharge side, the bottom of which is located above the feed side of the coarse comminution device (10).

6. A small storage medium destroyer as claimed in claim 1, characterized in that the material magnetic separation device (20) comprises:

a conveyor belt (230), the conveyor belt (230) having a low-level horizontal portion, an inclined portion, and a high-level horizontal portion provided along a conveying direction, the low-level horizontal portion being located below a discharge side of the screening device (11);

and the magnetic suction device (207) is fixedly arranged inside the high-level horizontal part.

7. A small storage medium destroyer as claimed in claim 6, characterized in that the coarse material processing device (1) further comprises: an intermediate aggregate device (12), the intermediate aggregate device (12) comprising:

a transition hopper (124), the transition hopper (124) being disposed between a low level portion of the conveyor belt (230) and an outfeed side of the screening device (11);

the hopper gate (126), the hopper gate (126) is movably installed at the bottom of the transition hopper (124);

the material collecting box (120) is fixedly arranged below the low-level horizontal part of the conveying belt (230).

8. The small storage medium destroyer according to claim 1, characterized in that the fines comminution device (21) comprises:

the fine crushing funnel (206), the fine crushing funnel (206) is fixedly arranged below the discharging side of the material magnetic separation device (20);

the fine crushing cavity (205), the fine crushing cavity (205) is fixedly arranged below the fine crushing hopper (206), and a crushing knife is arranged in the fine crushing cavity;

a fine crushing motor (203), wherein the fine crushing motor (203) is fixedly arranged on the fine crushing cavity (205) and drives the crushing blade to rotate.

9. The small storage medium destroying machine according to claim 1, characterized in that a casing (4) is further installed outside the frame (3), a feed opening (5) with a baffle plate, a control button (6) for controlling the coarse material processing device (1) and the fine material processing device (2), and a display screen (7) for displaying the operation data of the coarse material processing device (1) and the fine material processing device (2) are installed on the casing (4).

10. A small-sized storage medium destroying machine according to claim 9, characterized in that said frame (3) is divided into a first frame (31) and a second frame (32) which are assembled, said casing (4) is divided into a first casing (41) and a second casing (42), said control buttons (6) are divided into a first button (61) and a second button (62), said display screen (7) is divided into a first display screen (71) and a second display screen (72);

the feed inlet (5), the first button (61) and the first display screen (71) are all arranged on the first machine shell (41), and the first machine shell (41) and the coarse material processing device (1) are all arranged on the first machine frame (31);

the second button (62) and the second display screen (72) are both arranged on the second machine shell (42), and the second machine shell (42) and the fine material processing device (2) are both arranged on the second machine frame (32).

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