CN113559973A

CN113559973A - Raw material crushing device for porous brick sintering

Info

Publication number: CN113559973A
Application number: CN202110868323.2A
Authority: CN
Inventors: 廖成俞
Original assignee: Chongqing Yongchuan Hongshi Building Material Co ltd
Current assignee: Chongqing Yongchuan Hongshi Building Material Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-10-29

Abstract

A raw material pulverizing apparatus for porous brick sintering, comprising: the crushing box is provided with a cavity at one side and a partition plate at the middle part; the partition plate is provided with a through hole; a hopper; a motor; the first crushing roller is rotatably arranged on a crankshaft of the motor and is arranged right below the hopper; the first screen is arranged below the first crushing roller and penetrates through the through hole; the second crushing roller is rotatably arranged in the cavity, the second crushing roller is arranged below the first screen mesh, and a first belt is arranged between the first crushing roller and the second crushing roller; the crushing teeth of the second crushing roller are smaller than the crushing teeth of the first crushing roller. Rotate through the crushing roller and carry out the breakage to the raw materials, then sieve the raw materials through first screen cloth, utilize the size of different broken teeth, to the raw materials after the breakage, carry out breakage once more, guarantee that the breakage is complete. Meanwhile, the classification treatment is utilized, so that the crushed raw materials with different degrees are screened, and classification screening is realized.

Description

Raw material crushing device for porous brick sintering

Technical Field

The invention relates to the technical field of crushing, in particular to a raw material crushing device for porous brick sintering.

Background

The porous brick, especially the non-clay porous brick, has the advantages of energy conservation, land conservation, waste utilization and the like, is a novel wall material which well replaces clay solid bricks, is worthy of popularization, and is beneficial to promoting the sustainable development of China. The porous brick has the characteristics of low production energy consumption, soil conservation, waste utilization, convenient construction, light weight, high strength, good heat preservation effect, durability, small shrinkage deformation, regular appearance and the like.

The sintered porous brick is prepared by roasting clay, shale, coal gangue, fly ash, sludge and other solid wastes as main raw materials, has a porosity of not more than 35 percent, has small pore size and large number, and is mainly used for bearing parts. The brick is generally rectangular hexahedron in shape, and a surface for combining with mortar is provided with a painting groove and a masonry mortar groove for increasing the combining force.

In the manufacturing of perforated bricks, raw materials need to be crushed, the existing gangue raw material crushing device with the patent number of CN201721108231.X is called as gangue raw material crushing device patent, workers only need to dump gangue on a conveyor belt, the conveyor belt is provided with material containing plates, the gangue enters a feed inlet of a crushing box between the material containing plates along with the conveyor belt, then the gangue enters the crushing box, the side walls of the two sides of the crushing box are rotatably connected with a round roller, the end part of the round roller is provided with a driving motor fixed on the outer wall of the crushing box, the driving motor is started, the round roller rotates, the round roller can drive a boss to rotate along with the rotation of the boss, a steel rope is fixedly connected on the boss, the other end of the steel rope is fixedly connected with a ball for knocking, when the boss rotates, the steel rope ball is driven to rotate around the center of the round roller, the rotation inertia of the round roller is increased along with the rotation speed of the round roller, the ball can knock the gangue in the crushing box when rotating, the gangue is crushed by knocking. Smash case top inner wall and still be equipped with a plurality of lugs, circle roller and boss can drive partial waste rock striking lug, further pulverize these waste rocks, once only smash a large amount of waste rocks, improve the kibbling efficiency of waste rock, reduce workman's intensity of labour. However, the raw material after the impact falls, and thus the crushing cannot be completely performed, and the raw material needs to be crushed to various degrees.

Disclosure of Invention

The purpose of this scheme is to provide a raw materials reducing mechanism for porous brick sintering to solve the complete broken problem of raw materials.

In order to achieve the above object, the present invention provides a raw material pulverizing apparatus for porous brick sintering, comprising:

the crushing box is provided with a cavity at one side and a partition plate at the middle part; the partition plate is provided with a through hole;

the hopper is arranged at the top of the crushing box, and the bottom of the hopper is communicated with the crushing box;

the motor is fixed on the side wall of the crushing box, and a crankshaft of the motor is arranged in the crushing box;

the first crushing roller is rotatably arranged on a crankshaft of the motor and is arranged right below the hopper;

a first screen disposed below the first crushing roller, the first screen passing through the through-hole;

the second crushing roller is rotatably arranged in the cavity, the second crushing roller is arranged below the first screen mesh, and a first belt is arranged between the first crushing roller and the second crushing roller; the crushing teeth of the second crushing roller are smaller than the crushing teeth of the first crushing roller.

The principle of the scheme is as follows: pour into the raw materials in the hopper, starter motor when driving first crushing roller and carrying out the breakage, broken raw materials fall, and then press and move first screen cloth, and then make first screen cloth slightly rotatory, the raw materials that are not sieved fall to the cavity in, and then fall in the top of second crushing roller, drive the second crushing roller by first belt and rotate, and then carry out breakage once more to the raw materials. Thus the raw material is screened in multiple stages.

The scheme has the beneficial effects that: to traditional scheme, this scheme is broken the raw materials through the rotation of crushing roller, then sieves the raw materials through first screen cloth, utilizes the size of different broken teeth, to the raw materials after the breakage, carries out breakage once more, guarantees that the breakage is complete. Meanwhile, the classification treatment is utilized, so that the crushed raw materials with different degrees are screened, and classification screening is realized.

Furthermore, one end of the first crushing roller is provided with a first cam which is coaxially connected with the first crushing roller and is abutted against one end of the first screen; the other end of the first screen is hinged to the crushing box, and a torsional spring is arranged inside the hinged position. When the motor starts, when driving first crushing roller and carrying out the breakage, first cam rotates thereupon, and then the first screen cloth of intermittent type nature contact extrusion, first screen cloth is under the contact of first cam, and is slightly rotatory, not only can shake the screening to the volume raw materials on the first screen cloth, when first cam offseted simultaneously, first screen cloth forms inclination, the raw materials that are not sieved of being more convenient for fall to the cavity in, and then fall in the top of second crushing roller, drive the rotation of second crushing roller by first belt, and then carry out breakage once more to the raw materials.

Further, a first discharging plate which is obliquely arranged is arranged at the bottom of the first screen, and the first discharging plate is arranged at the bottom of the crushing box; the side wall of the crushing box is provided with a discharge hole for discharging materials, and the discharge hole is provided with a second screen; the bottom of the second crushing roller is provided with a second discharging plate which is obliquely arranged, the other side wall of the crushing box is provided with a discharging hole, the discharging holes of the first discharging plate are oppositely arranged, and a third screen is arranged on the discharging hole of the second discharging plate. Not only can avoid the raw materials to flow out entirely, carry out the processing of filter screen screening to the raw materials simultaneously.

Further, the diameters of the sieve holes of the first sieve, the second sieve and the third sieve are reduced in sequence. Not only can guarantee hierarchical screening, can guarantee simultaneously that just all complete to every layer of screening.

Furthermore, a sliding groove is formed in the side wall of the interior of the crushing box, the sliding groove is arranged corresponding to the through hole in the partition plate, and the sliding groove and the through hole are the same in size; a sliding block is arranged inside the sliding groove, one end of the first screen is hinged with the sliding block, and a spring is arranged between the sliding block and the crushing box; the bottom of the sliding block is provided with a fixedly installed supporting rod, the bottom of the supporting rod is provided with a pressure sensor for detecting weight, a spring is arranged between the supporting rod and the pressure sensor, and two ends of the spring are fixedly connected with the supporting rod and the pressure sensor; the bottom of the hopper is provided with an electromagnet, and power supply equipment is arranged outside the hopper; the crushing case outside is equipped with the controller, and pressure sensor and power supply unit all with sensor electric connection. After first screen cloth filters, when the raw materials that remain not sieved increase, the slider slided downwards under the effect of gravity, and branch slided downwards thereupon simultaneously, and then the extrusion spring, and then the contact is crowded, and then pressure sensor response deformation degree, then in pressure sensor transmission signal to the controller, then the controller control electro-magnet circular telegram, and then the electro-magnet slides in opposite directions, and then makes the hopper bottom seal to the feasible broken incasement portion that no longer wants carries out the feeding. According to the weight of the raw materials on the first screen cloth, the feeding can be controlled according to the pressure sensor, so that the device is guaranteed not to exceed the load, the normal operation of a machine is guaranteed, and the screening process can be guaranteed to be complete.

Further, the pressure sensor includes: the bearing head, the upper cover strain gauge, the shell, the screw hole and the lead plug; the bearing head is arranged at the top of the pressure sensor, and the shell is detachably connected with the upper cover; the bottom of the bearing head is provided with an elastic body, a pressure ring is arranged between the elastic body and the bearing head, and the strain gauge is arranged in the pressure sensor; the screw hole is arranged at the bottom of the pressure sensor; and a lead plug is arranged on the outer side wall of the pressure sensor. The strain gauge adopts a differential cloth piece and a full-bridge boundary, and further can discharge the interference caused by load eccentricity or lateral force. When the receiving head receives pressure, the elastic body is passed through the pressure ring, and the strain amount sensed by the strain gauge is further measured.

Further, the top of hopper is equipped with and is used for dirt-proof shield. In the use, should the shield on the hopper surface, not only can reduce the outside diffusion of dust, avoid the people to stretch into in the device by accident simultaneously, prevent to take place danger.

Further, an air outlet is formed in the side wall of the crushing box and located above the first screen, and a waste heat device of the sintered perforated bricks or a steam pipeline heated by waste heat is connected to the outside of the air outlet; the air outlet is provided with an electromagnetic valve for controlling opening, and the electromagnetic valve is electrically connected with the controller; the pressure sensor is provided with a sound detector, the sound detector is electrically connected with the controller, and the sound detector is set to detect the frequent vibration sound generated when large rubbles fall on the first screen; the motor is arranged below the first screen, and the motor and the first crushing roller are driven by a second belt; the first screen extends out of the crushing box, a second cam which is rotatably mounted is arranged on an output shaft of the motor, and the second cam is in contact with the part, extending out of the crushing box, of the first screen. When the rubble falls into the right side of first screen cloth to cause first screen cloth direct downstream until the level, and then contact extrusion pressure sensor, sound detector detects the rubble simultaneously and falls into sound, and then in transmission signal to the controller, and then the control solenoid valve is opened, and then makes steam blowout, and then strikes the rubble, makes the rubble roll on first screen cloth, until falling into the second crushing roller. Not only does not influence the use of the whole machine and the completeness of the crushing process, but also utilizes the heat in the waste heat to play a certain role in catalyzing the curing of the subsequent raw materials. However, if the impact of the steam is ineffective to the broken stones, when the motor is started, the second cam is driven by the motor to rotate, so that the cam is in contact with and extrudes the first screen, the first screen is lifted, the broken stones falling on the first screen roll, and the broken stones fall on the side of the second crushing roller. The effect to the impact is prevented and improved, and then the effect of breakage is guaranteed more.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is an enlarged schematic view of a in fig. 1.

Fig. 3 is an enlarged schematic view of B in fig. 1.

Fig. 4 is a schematic structural diagram of the pressure sensor.

Fig. 5 is a schematic structural diagram of embodiment 2 of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

the reference numbers in the drawings of the specification include: the crushing box comprises a crushing box 1, a hopper 2, a dust cover 3, a motor 4, a first crushing roller 5, a first cam 6, a first screen 7, a second crushing roller 8, a first belt 9, a first discharging plate 10, a second screen 11, a second discharging plate 12, a third screen 13, a sliding block 14, a spring 15, a support rod 16, a pressure sensor 17, an electromagnet 18, a receiving head 19, an upper cover 20, a pressing ring 21, an elastic body 22, a strain gauge 23, a shell 24, a screw hole 25, a wire plug 26, a second belt 27, a second cam 28 and an air outlet 29.

As shown in figure 1:

a raw materials reducing mechanism for porous brick sintering, the outside comprises

broken case

1, and 1 tops of broken case are equipped with hopper 2 that is used for the material loading, and the top of hopper 2 is equipped with and is used for dirt-proof shield 3, in the use, should be on 2 surfaces of hopper with shield 3, not only can reduce the outside diffusion of dust, avoids the people to stretch into the device by accident simultaneously, prevents to take place danger.

Be equipped with in broken case 1 and be used for broken first crushing roller 5, and first crushing roller 5 is located hopper 2 under, and first crushing roller 5 sets up in pairs, rotates in opposite directions, and first crushing roller 5 outside is equipped with and is used for driven motor 4, and is equipped with the reduction gear on motor 4's the spindle, and first crushing roller 5 rotates and connects on motor 4's the spindle. A first screen 7 is arranged below the first crushing roller 5 and used for screening the raw materials crushed by the first crushing roller 5.

Broken case 1 one side is equipped with the cavity, the one end rotation of first crushing roller 5 sets up in the cavity, be equipped with the second crushing roller 8 of rotation installation in the cavity, be equipped with the baffle between first crushing roller 5 and the second crushing roller 8, and second crushing roller 8 is located the below of first crushing roller 5, and second crushing roller 8 sets up in pairs, rotate in opposite directions, be connected through first belt 9 between first crushing roller 5 and the second crushing roller 8, and then when motor 4 starts to drive first crushing roller 5 and rotates, drive second crushing roller 8 by first belt 9 and rotate along with it.

The baffle between first crushing roller 5 and the second crushing roller 8 is equipped with the through-hole, and first screen cloth 7 extends the through-hole, is equipped with coaxial coupling's first cam 6 in the axis of rotation of first crushing roller 5, and first cam 6 offsets with first screen cloth 7. The free end of the first crushing roller 5 is hinged in the crushing box 1, and a torsion spring is arranged inside the hinged part. When motor 4 starts, when driving first crushing roller 5 and carrying out the breakage, first cam 6 rotates thereupon, and then the first screen cloth 7 of intermittent type nature contact extrusion, first screen cloth 7 is under the contact of first cam 6, slightly rotatory, not only can shake the screening to the volume raw materials on the first screen cloth 7, when first cam 6 offsets simultaneously, first screen cloth 7 forms inclination, be more convenient for not fallen to the cavity by the raw materials of screening, and then fall in the top of second crushing roller 8, drive second crushing roller 8 by first belt 9 and rotate, and then carry out the breakage once more to the raw materials. The crushing tooth of the second crushing roller 8 is smaller than that of the first crushing roller 5, so that the raw material is classified and sieved, and meanwhile, the raw material which is not successfully crushed by the first crushing roller 5 is ground by the fine crushing tooth and then crushed.

First screen cloth 7 bottom is equipped with the first play flitch 10 that the slope set up, and first play flitch 10 sets up in the bottom of broken case 1, and the lateral wall of broken case 1 is equipped with the discharge gate hole that is used for unloading, and through-hole department is equipped with second screen cloth 11, not only can avoid the whole outflow of raw materials, carries out the processing of filter screening to the raw materials simultaneously. The bottom of the second crushing roller 8 is provided with a second discharging plate 12 which is obliquely arranged, the other side wall of the crushing box 1 is provided with a discharging hole, the discharging hole corresponding to the first discharging plate 10 is oppositely arranged, and a third screen 13 is arranged at the discharging hole. The diameters of the sieve holes of the first sieve mesh 7, the second sieve mesh 11 and the third sieve mesh 13 are reduced in sequence, so that grading sieving can be guaranteed, and complete sieving of each layer can be guaranteed.

As shown in fig. 2:

the side wall of the crushing box 1 is provided with a sliding chute, the position of the sliding chute is arranged corresponding to the through hole on the partition board, and the sliding chute and the through hole have the same size. A sliding block 14 is arranged inside the sliding groove, and one end of the first screen 7 is hinged to the sliding block 14. A spring 15 is arranged between the slide 14 and the crushing box 1. The bottom of the sliding block 14 is provided with a fixedly installed supporting rod 16, the bottom of the supporting rod 16 is provided with a pressure sensor 17 used for detecting weight, a spring 15 is arranged between the supporting rod 16 and the pressure sensor 17, and two ends of the spring 15 are fixedly connected with the supporting rod 16 and the pressure sensor 17.

As shown in fig. 3 and 4:

the pressure sensor 17 includes: the bearing head 19, the upper cover 20, the press ring 21, the elastic body 22, the strain gauge 23, the shell 24, the screw hole 25 and the lead plug 26; the top of the pressure sensor 17 is provided with a bearing head 19 for sensing received pressure, the outside of the pressure sensor 17 is provided with a shell 24, the top of the shell 24 is provided with a detachably mounted upper cover 20, the bottom of the bearing head 19 is provided with an elastic body 22, a press ring 21 is arranged between the elastic body 22 and the bearing head 19, and the pressure sensor 17 is provided with a strain gauge 23. The bottom of the pressure sensor 17 is provided with a screw hole 25 for fixing. And the outer side wall of the pressure sensor 17 is provided with a lead plug 26. The strain gauge 23 is defined by a differential cloth and a full bridge, and can discharge disturbance caused by load eccentricity or lateral force. When receiving pressure from the receiving head 19, the strain gauge 23 receives the amount of strain via the elastic body 22 via the pressing ring 21.

The outside of crushing case 1 is equipped with the controller, and pressure sensor 17 and controller electric connection, the bottom both ends of hopper 2 are equipped with slidable mounting's electro-magnet 18, and the electro-magnet 18 outside is equipped with circular telegram equipment, circular telegram equipment and controller electric connection. After first screen cloth 7 filters, when remaining unsieved raw materials increase, slider 14 is the lapse under the effect of gravity, simultaneously branch 16 is the lapse, and then extrusion spring 15, and then contact extrusion accepts head 19, and then pressure sensor 17 response deformation degree, then strainometer 23 response dependent variable, then pressure sensor 17 transmission signal is to the controller in, then 18 circular telegrams of controller control electro-magnet, and then electro-magnet 18 slides in opposite directions, and then make 2 bottoms of hopper seal, thereby make no longer want the inside feeding that carries out of broken case 1. According to pressure sensor 17 not only can control the feeding according to the weight of the raw materials on first screen cloth 7, and then guarantee that the device can not overload, guarantee the normal operating of machine, can guarantee simultaneously that the screening process is complete. Meanwhile, when the first screen cloth 7 is horizontal, the weight of the raw material is kept constant, and then the controller controls the electromagnet 18 to be continuously electrified, and when the second crushing roller 8 continuously rotates and the raw material on the first screen cloth 7 is reduced, the supporting rod 16 then moves upwards, and then the controller controls the electromagnet 18 to be powered off, so that the hopper 2 is exposed. And then the feeding is continued. The control can be performed in real time in accordance with the weight of the raw material on the first screen 7.

During specific operation, pour the raw materials into hopper 2, starter motor 4, when driving first crushing roller 5 and carrying out the breakage, first cam 6 rotates thereupon, and then intermittent type nature's contact extrusion first screen cloth 7, first screen cloth 7 is under first cam 6's contact, it is slightly rotatory, not only can shake the screening to the volume raw materials on the first screen cloth 7, simultaneously when first cam 6 offsets, first screen cloth 7 forms inclination, be more convenient for not fallen to the cavity by the raw materials of screening, and then fall in the top of second crushing roller 8, drive second crushing roller 8 by first belt 9 and rotate, and then carry out the breakage once more to the raw materials.

After first screen cloth 7 filters, when remaining unsieved raw materials increase, slider 14 is the lapse under the effect of gravity, simultaneously branch 16 is the lapse, and then extrusion spring 15, and then contact extrusion accepts head 19, and then pressure sensor 17 response deformation degree, then strainometer 23 response dependent variable, then pressure sensor 17 transmission signal is to the controller in, then 18 circular telegrams of controller control electro-magnet, and then electro-magnet 18 slides in opposite directions, and then make 2 bottoms of hopper seal, thereby make no longer want the inside feeding that carries out of broken case 1.

Example 2 (as shown in FIG. 5)

Embodiment 2 differs from embodiment 1 in that, with respect to the first screen 7, if at the beginning of crushing, crushed stone falls on the left end of the first screen 7, so that the first screen 7 itself slides down until the first screen 7 is horizontal, which may affect the use of the second crushing roller 8, the use of the entire apparatus, and incomplete crushing.

The side wall of the crushing box 1 is provided with an air outlet 29, the air outlet 20 is positioned above the first screen 7, and the outside of the air outlet 29 is connected with a waste heat device of the sintered perforated bricks or a steam pipeline heated by waste heat. The air outlet 29 is provided with an electromagnetic valve for controlling opening, and the electromagnetic valve is electrically connected with the controller. The pressure sensor 17 is provided with a sound detector which is electrically connected with the controller, and the sound detector is set to detect the frequent vibration sound generated when the large crushed stones fall on the first screen 7. When the rubble falls into the right side of first screen cloth 7, so that first screen cloth 7 directly moves down until the level, and then contact extrusion pressure sensor 17, sound detector detects the rubble simultaneously and falls into sound, and then in transmission signal to the controller, and then the control solenoid valve is opened, and then makes steam blowout, and then strikes the rubble, makes the rubble roll on first screen cloth 7, until falling into second crushing roller 8.

Not only does not influence the use of the whole machine and the completeness of the crushing process, but also has a certain catalytic action on the subsequent curing of the raw materials by utilizing the heat in the waste heat

However, if the impact of the steam is not effective for crushing the stone, further, in embodiment 2, the motor 4 and the first crushing roller 5 are driven by the second belt 27, and the motor 4 is disposed below the first screen 7. The first screen cloth 7 extends outside the crushing box 1, a second cam 28 rotatably mounted on the output shaft of the motor 4 is provided, and the second cam 28 contacts the part of the first screen cloth 7 extending out of the crushing box 1. When the motor 4 is started, the second cam 28 is driven by the motor 4 to rotate, so that the cam is in contact with and extrudes the first screen 7, the first screen 7 is lifted, and then crushed stones falling on the first screen 7 roll and fall into the second crushing roller 8 side.

The effect to the impact is prevented and improved, and then the effect of breakage is guaranteed more.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A raw material crushing device for porous brick sintering, characterized by comprising:

the crushing box (1), wherein a cavity is arranged on one side of the crushing box (1), and a partition plate is arranged in the middle of the crushing box; the partition plate is provided with a through hole;

the hopper (2) is arranged at the top of the crushing box (1), and the bottom of the hopper (2) is communicated with the crushing box (1);

the motor (4) is fixed on the side wall of the crushing box (1), and a crankshaft of the motor (4) is arranged in the crushing box (1);

the first crushing roller (5) is rotatably arranged on a shaft of the motor (4) and is arranged right below the hopper (2);

a first screen (7), the first screen (7) being disposed below the first crushing roller (5), and the first screen (7) passing through the through-holes;

the second crushing roller (8) is rotatably arranged in the cavity, the second crushing roller (8) is arranged below the first screen (7), and a first belt (9) is arranged between the first crushing roller (5) and the second crushing roller (8); the crushing teeth of the second crushing roller (8) are smaller than the crushing teeth of the first crushing roller (5).

2. The raw material pulverizing apparatus for perforated brick sintering according to claim 1, wherein one end of said first crushing roller (5) is provided with a first cam (6) coaxially connected and abuts against one end of a first screen (7); the other end of the first screen (7) is hinged with the crushing box (1), and a torsional spring is arranged inside the hinged position.

3. The raw material pulverizing apparatus for perforated brick sintering according to claim 1, characterized in that the first screen (7) is provided at the bottom with a first discharging plate (10) disposed obliquely, and the first discharging plate (10) is disposed at the bottom of the crushing box (1); the side wall of the crushing box (1) is provided with a discharge hole for discharging, and a second screen (11) is arranged at the discharge hole; the bottom of the second crushing roller (8) is provided with a second discharging plate (12) which is obliquely arranged, the other side wall of the crushing box (1) is provided with a discharging hole, the discharging hole opposite to the first discharging plate (10) is arranged, and a third screen (13) is arranged on the discharging hole of the second discharging plate (12).

4. The raw material pulverizing apparatus for perforated brick sintering according to claim 3, wherein the mesh diameters of the first mesh (7), the second mesh (11), and the third mesh (13) are sequentially reduced.

5. The raw material pulverizing device for perforated brick sintering according to claim 1, characterized in that the side wall inside the crushing box (1) is provided with a chute, and the chute is positioned corresponding to the through hole on the partition plate, and the chute and the through hole are the same in size; a sliding block (14) is arranged inside the sliding groove, one end of the first screen (7) is hinged with the sliding block (14), and a spring (15) is arranged between the sliding block (14) and the crushing box (1); a support rod (16) is fixedly installed at the bottom of the sliding block (14), a pressure sensor (17) for detecting weight is arranged at the bottom of the support rod (16), a spring (15) is arranged between the support rod (16) and the pressure sensor (17), and two ends of the spring (15) are fixedly connected with the support rod (16) and the pressure sensor (17); an electromagnet (18) is arranged at the bottom of the hopper (2), and power supply equipment is arranged outside the hopper; the external part of the crushing box (1) is provided with a controller, and the pressure sensor (17) and the power supply equipment are electrically connected with the sensor.

6. The raw material pulverizing apparatus for perforated brick sintering according to claim 6, wherein the pressure sensor (17) comprises: the device comprises a bearing head (19), an upper cover (20), a strain gauge (23), a shell (24), a screw hole (25) and a lead plug; the bearing head (19) is arranged at the top of the pressure sensor (17), and the shell (24) is detachably connected with the upper cover (20); an elastic body (22) is arranged at the bottom of the bearing head (19), a pressure ring is arranged between the elastic body (22) and the bearing head (19), and a strain gauge (23) is arranged in the pressure sensor (17); the screw hole (25) is arranged at the bottom of the pressure sensor (17); and a lead plug (26) is arranged on the outer side wall of the pressure sensor (17).

7. The raw material pulverizing apparatus for perforated brick sintering according to claim 1, characterized in that the top of the hopper (2) is provided with a dust cap (3) for dust prevention.

8. The raw material pulverizing apparatus for perforated brick sintering according to claim 1, wherein the side wall of the crushing box (1) is provided with an air outlet (29), and the air outlet (29) is located above the first screen (7), and the air outlet (29) is externally connected with a waste heat device of the sintered perforated brick or a steam pipeline heated by waste heat; the air outlet (29) is provided with an electromagnetic valve for controlling opening, and the electromagnetic valve is electrically connected with the controller; the pressure sensor is provided with a sound detector which is electrically connected with the controller, and the sound detector is set to detect the frequent vibration sound generated when large crushed stones fall on the first screen (7); the motor (4) is arranged below the first screen (7), and the motor (4) and the first crushing roller are driven by a second belt (27); the first screen (7) extends out of the crushing box (1), a second cam (28) which is rotatably installed is arranged on an output shaft of the motor (4), and the second cam (28) is in contact with the part, extending out of the crushing box (1), of the first screen (7).