CN112108250B

CN112108250B - Comprehensive recycling treatment equipment and comprehensive recycling treatment process for construction waste

Info

Publication number: CN112108250B
Application number: CN202010929181.1A
Authority: CN
Inventors: 吴远光; 江国升
Original assignee: Guangdong Dehong Construction Engineering Co ltd
Current assignee: Guangdong Dehong Construction Engineering Co.,Ltd.
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-11-02
Anticipated expiration: 2040-09-07
Also published as: CN112108250A

Abstract

The invention discloses a comprehensive recovery processing device and a comprehensive recovery processing process for construction waste. The invention can solve the following problems of the traditional construction waste recycling and treating equipment in the process of treating the waste ceramic tiles: the traditional construction waste recycling equipment has more steps for waste ceramic tile treatment, and has complex structure and higher later maintenance cost; secondly, traditional construction waste recycling equipment is incomplete to the smashing of ceramic tile when handling to old and useless ceramic tile, causes the ceramic tile utilization value after smashing to hang down, perhaps causes the ceramic tile to smash the product quality of retrieving back output lower. The equipment provided by the invention can be used for primarily crushing the ceramic tiles through the crushing device and further grinding the crushed ceramic tiles through the grinding device, so that the purpose of thoroughly crushing the ceramic tiles is achieved.

Description

Comprehensive recycling treatment equipment and comprehensive recycling treatment process for construction waste

Technical Field

The invention relates to the technical field of construction waste treatment, in particular to a comprehensive recovery treatment device and a comprehensive recovery treatment process for construction waste.

Background

With the acceleration of industrialization and urbanization, the construction industry is rapidly developing, and the quantity of Chinese construction waste accounts for more than 1/3 of the total quantity of urban waste along with the increase of the quantity of the generated construction waste. The construction waste refers to the general name of dregs, waste concrete, waste bricks and stones and other wastes produced by people in the production activities of the construction industry such as demolition, construction, decoration and repair. The ceramic tile is an acid and alkali resistant building or decorative material such as porcelain or stone formed by grinding, mixing, pressing, glazing, sintering and the like refractory metal oxide and semimetal oxide, and is called as a ceramic tile; the ceramic tile is one of building materials commonly used in building decoration, and the ceramic tile is crushed in the transportation, use and dismantling processes, so that the building waste is generated.

The damaged ceramic tile has low utilization value, can cause resource waste if directly thrown away, and can save social resources if the damaged ceramic tile is recycled.

However, the traditional construction waste recycling equipment has the following problems in the process of treating waste ceramic tiles: the traditional construction waste recycling equipment has more steps for waste ceramic tile treatment, and has complex structure and higher later maintenance cost; secondly, traditional construction waste recycling equipment is incomplete to the smashing of ceramic tile when handling to old and useless ceramic tile, causes the ceramic tile utilization value after smashing to hang down, perhaps causes the ceramic tile to smash the product quality of retrieving back output lower.

Disclosure of Invention

In order to solve the problems, the invention provides a comprehensive recycling device for construction waste, which can solve the problems in the background art.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: the utility model provides a recovery processing equipment is synthesized to building rubbish, includes installing frame, reducing mechanism and grinder, the installing frame is ascending 21274that opens, and the mounting panel is installed at the top of installing frame, and the reducing mechanism is installed on the mounting panel, and grinder installs on the reducing mechanism, wherein:

the crushing device comprises a driving motor, a driving gear, a rotating shaft, a driven outer gear ring, a driven inner gear ring, an annular chute, an annular sliding block and a crushing mechanism, wherein the driving motor is installed on the upper end surface on the right side of the mounting plate, the output shaft of the driving motor downwards penetrates through the mounting plate, the driving gear is installed at the lower end of the output shaft of the driving motor, the upper end of the rotating shaft is installed at the central position of the mounting plate through a bearing, the driven outer gear ring is sleeved and fixed on the outer wall of the middle part of the rotating shaft, the driving gear is mutually meshed with the driven outer gear ring, the annular chute is formed in the bottom of the mounting plate, the annular chute takes the axis of the rotating shaft as the center of a circle, the radius of the annular chute is larger than the distance between the driving motor and the rotating shaft, the annular sliding block is arranged in the annular chute, the driven inner gear ring is installed on the lower end surface of the annular sliding block, and the driving gear is mutually meshed with the driven inner gear ring on the inner gear ring side of the driven inner gear ring, the crushing mechanism is arranged on the driven inner gear ring and the rotating shaft;

the grinding device comprises a lifting shaft, a spring lifting groove, a limiting ring, a first expansion spring, a fixed block, a fixed lifting groove, a first limiting block, a guide cylinder, a roller wheel support, a walking wheel and a buffer grinding mechanism, wherein the lifting shaft is arranged in the center of the rotating shaft in a sliding manner, the middle part of the rotating shaft is provided with the spring lifting groove concentric with the lifting shaft, the upper side of the spring lifting groove is fixedly sleeved with the limiting ring, the first expansion spring is connected between the limiting ring and the bottom of the spring lifting groove, the fixed block is arranged in the middle of the upper end surface of the mounting plate, the middle part of the fixed block is provided with the fixed lifting groove, two sides of the fixed lifting groove are provided with rectangular grooves, one end of the lifting shaft in the fixed lifting groove is provided with the first limiting block, two sides of the first limiting block are provided with rectangular blocks matched with the rectangular grooves, the guide cylinder is arranged on the lower end surface of the rotating shaft, and the outer circular surface at the bottom end of the guide cylinder is provided with a downward convex curved surface, the lower extreme of lift axle is installed the gyro wheel support of circular structure, and the up end symmetry of gyro wheel support is equipped with the walking wheel.

As a preferred technical scheme of the invention, the crushing mechanism comprises an inner crushing barrel, an inner crushing rod, an outer crushing barrel and an outer crushing rod, wherein the inner crushing barrel is of a hollow structure with two closed ends, a mounting hole is formed in the upper end face of the inner crushing barrel, the inner crushing barrel is fixedly sleeved on the outer wall of the lower side of a rotating shaft through the mounting hole, the inner crushing rod is uniformly and circumferentially arranged on the outer wall of the inner crushing barrel, the inner crushing rod is equidistantly arranged on the outer wall of the inner crushing barrel from top to bottom, the outer crushing barrel is of a cylindrical structure with the upper end and the lower end both open, the upper end face of the outer crushing barrel is matched and fixedly arranged on the lower end face of a driven inner gear ring, the outer crushing rod is uniformly and circumferentially arranged on the inner wall of the outer crushing barrel, the outer crushing rod is equidistantly arranged on the inner wall of the outer crushing barrel from top to bottom, and the outer crushing rod and the inner crushing rod are arranged in a staggered mode.

As a preferred technical scheme of the invention, the buffering and grinding mechanism comprises a first lifting buffer shaft, a buffer groove, a buffer rod, a second expansion spring, a second lifting buffer shaft, a grinding block and a grinding groove, wherein the first lifting buffer shaft is arranged at the central position of the lower end surface of a roller bracket, the lower end of the first lifting buffer shaft is provided with the buffer groove, the edge of the opening of the buffer groove is provided with a stop block, the buffer rod is arranged in the buffer groove in a sliding manner through the second expansion spring, the top end of the buffer rod is provided with the stop block for limiting, the lower end of the buffer rod is provided with the second lifting buffer shaft, the grinding block is arranged at the lower end of the second lifting buffer shaft, the grinding block is a circular block, the middle of the lower end surface of the grinding block is a plane, the edge of the lower end surface of the grinding block is a cambered surface, the grinding groove is of a conical structure with an upward opening, the upper end surface of the grinding groove is arranged on the lower end surface of an outer grinding cylinder, the bottom of the inner side of the grinding groove is matched with the bottom surface of the grinding block in shape, and sieve pores are uniformly formed in the grinding groove.

As a preferred technical scheme of the invention, the annular chute is of a T-shaped structure, the annular slide block is matched with the annular chute, and balls for reducing sliding friction are uniformly arranged in the annular chute.

In a preferred embodiment of the present invention, the inner grinding drum has an inclined chamfer at a corner of a lower side thereof.

As a preferred technical scheme of the invention, the lower end face of the fixed block is provided with a abdicating groove.

As a preferable technical scheme of the invention, a material receiving groove is arranged on the mounting frame right below the grinding groove, and the material receiving groove is of a box-shaped structure with an upward opening.

As a preferable technical scheme of the invention, the left side of the mounting plate is provided with the feeding hole, the left side of the feeding hole inclines leftwards, and the lower end of the feeding hole penetrates through the mounting plate and extends into the position right above the gap between the inner crushing barrel and the outer crushing barrel.

The invention has the beneficial effects that:

1. the invention can solve the following problems of the traditional construction waste recycling and treating equipment in the process of treating the waste ceramic tiles: the traditional construction waste recycling equipment has more steps for waste ceramic tile treatment, and has complex structure and higher later maintenance cost; secondly, traditional construction waste recycling equipment is incomplete to the smashing of ceramic tile when handling to old and useless ceramic tile, causes the ceramic tile utilization value after smashing to hang down, perhaps causes the ceramic tile to smash the product quality of retrieving back output lower. The equipment provided by the invention can be used for primarily crushing the ceramic tiles through the crushing device and further grinding the crushed ceramic tiles through the grinding device, so that the purpose of thoroughly crushing the ceramic tiles is achieved.

2. According to the invention, the driving motor drives the driven inner gear ring and the driven outer gear ring to rotate in opposite directions through gear transmission, the driven inner gear ring drives the outer crushing barrel to rotate, the driven outer gear ring drives the inner crushing barrel to rotate through the rotating shaft, and the rotating direction of the driven outer gear ring is opposite to that of the outer crushing barrel, so that the inner crushing rods and the inner crushing rods rotate in a relative staggered manner, and the ceramic tile is crushed.

3. The rotary shaft is driven by the driving motor to rotate, so that the travelling wheels move along the downward convex curved surface arranged on the outer circular surface at the bottom end of the guide cylinder, the travelling wheels are jacked to move and move up and down, the lifting shaft and the roller support move up and down, the roller support drives the grinding block on the lower side of the roller support to move up and down through the first lifting buffer shaft and the second lifting buffer shaft, the grinding block moves up and down in a reciprocating mode and continuously and quickly impacts the ceramic tiles crushed in the grinding groove, and meanwhile, the outer grinding cylinder drives the grinding groove to rotate so that the grinding block grinds the crushed ceramic tiles while continuously and quickly impacting the crushed ceramic tiles, and the purpose of crushing the ceramic tiles to be finer is achieved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the front cross-sectional structure of the present invention;

FIG. 2 is an enlarged, fragmentary, schematic view taken at A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of a portion of the invention at B of FIG. 1;

FIG. 4 is an enlarged view of a portion of the invention at C of FIG. 1;

FIG. 5 is a schematic diagram of the right-side cross-sectional structure of the present invention;

fig. 6 is a partially enlarged view of fig. 5D of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-6, the comprehensive recycling and treating equipment for construction waste comprises an installation frame 1, a smashing device 2 and a grinding device 3, wherein the installation frame 1 is of a v-21274structure with an upward opening, an installation plate 11 is installed at the top of the installation frame 1, the smashing device 2 is installed on the installation plate 11, the grinding device 3 is installed on the smashing device 2, and the installation frame 1 is of a structure with an upward opening, wherein:

the mounting panel 11 left side install feed inlet 13, and the slope of feed inlet 13 left side is left, the lower extreme of feed inlet 13 passes mounting panel 11 and stretches into directly over to the clearance between interior crushing barrel 281 and the outer crushing barrel 283.

The crushing device 2 comprises a driving motor 21, a driving gear 22, a rotating shaft 23, a driven external gear ring 24, a driven internal gear ring 25, an annular sliding groove 26, an annular sliding block 27 and a crushing mechanism 28, wherein the driving motor 21 is installed on the upper end surface of the right side of the mounting plate 11, the output shaft of the driving motor 21 downwards penetrates through the mounting plate 11, the driving gear 22 is installed at the lower end of the output shaft of the driving motor 21, the upper end of the rotating shaft 23 is installed at the central position of the mounting plate 11 through a bearing, the driven external gear ring 24 is sleeved and fixed on the outer wall of the middle part of the rotating shaft 23, the driving gear 22 is mutually meshed with the driven external gear ring 24, the annular sliding groove 26 is formed in the bottom of the mounting plate 11, the annular sliding groove 26 takes the axis center of the rotating shaft 23 as the center, the radius of the annular sliding groove 26 is larger than the distance between the driving motor 21 and the rotating shaft 23, and the annular sliding block 27 is arranged in the annular sliding groove 26, a driven internal gear ring 25 is arranged on the lower end surface of the annular slide block 27, the driving gear 22 is meshed with the driven internal gear ring 25 on the inner side of the driven internal gear ring 25, and the crushing mechanism 28 is arranged on the driven internal gear ring 25 and the rotating shaft 23; the annular sliding groove 26 is of a T-shaped structure, the annular sliding block 27 is matched with the annular sliding groove 26, and balls for reducing sliding friction are uniformly arranged in the annular sliding groove 26.

The crushing mechanism 28 comprises an inner crushing barrel 281, an inner crushing rod 282, an outer crushing barrel 283 and an outer crushing rod 284, wherein the inner crushing barrel 281 is a hollow structure with two closed ends, and the corners of the lower side of the inner crushing barrel 281 are provided with inclined chamfers; and the mounting hole has been seted up to the up end of interior crushing barrel 281, interior crushing barrel 281 passes through the fixed cover of mounting hole to be established on the outer wall of rotation axis 23 downside, interior crushing rod 282 evenly arranges on the outer wall of interior crushing barrel 281 in the circumference, and interior crushing rod 282 arranges at the upper and lower equidistance in the outer wall of interior crushing barrel 281 from top to bottom, outer crushing barrel 283 is the equal open-ended tubular construction of upper end and lower extreme, the cooperation fixed mounting of the up end of outer crushing barrel 283 is at the lower terminal surface of driven internal gear ring 25, evenly arrange outer crushing rod 284 in the circumference on the inner wall of outer crushing barrel 283, and outer crushing rod 284 arranges at the equidistance from top to bottom in outer crushing barrel 283 inner wall, it sets up to crisscross each other between outer crushing rod 284 and the interior crushing rod 282.

When the ceramic tile waste material crusher works specifically, the driving motor 21 is started, the driving motor 21 drives the driven outer gear ring 24 and the driven inner gear ring 25 to rotate through gear transmission, the outer gear ring 24 is opposite to the driven inner gear ring 25 in rotation direction, the outer gear ring 24 and the driven inner gear ring 25 respectively drive the inner crushing rod 282 and the outer crushing rod 284 to rotate in a staggered mode through the inner crushing cylinder 281 and the outer crushing cylinder 283, when the rotation speed meets the requirement, the ceramic tile waste material is poured into the feeding hole 13 through manpower, the ceramic tile waste material is crushed by the inner crushing rod 282 and the outer crushing rod 284 which rotate in a staggered mode relatively in the falling process, and the purpose of primarily crushing the ceramic tile waste material is achieved.

The grinding device 3 comprises a lifting shaft 31, a spring lifting groove 32, a limiting ring 33, a first expansion spring 34, a fixing block 35, a fixed lifting groove 36, a limiting block 37, a guide cylinder 38, a roller support 39, a traveling wheel 310 and a buffer grinding mechanism 311, wherein the lifting shaft 31 is arranged at the center of the rotating shaft 23 in a sliding manner, the spring lifting groove 32 concentric with the lifting shaft 31 is formed in the middle of the rotating shaft 23, the limiting ring 33 is fixedly sleeved on the lifting shaft 31 on the upper side of the spring lifting groove 32, the first expansion spring 34 is connected between the limiting ring 33 and the bottom of the spring lifting groove 32, the fixing block 35 is arranged at the middle position of the upper end face of the mounting plate 11, and a abdicating groove 351 is formed in the lower end face of the fixing block 35; fixed lift groove 36 has been seted up at the middle part of fixed block 35, the both sides of fixed lift groove 36 are provided with the rectangular channel, stopper 37 is installed to the one end of lift axle 31 in fixed lift groove 36, and stopper 37's both sides have the rectangular block that the cooperation rectangular channel set up, the lower terminal surface at rotation axis 23 is installed to guide cylinder 38, and the outer disc of bottom of guide cylinder 38 is equipped with bellied curved surface downwards, roller bracket 39 of circular structure is installed to the lower extreme of lift axle 31, the up end symmetry of roller bracket 39 is equipped with walking wheel 310.

The buffer grinding mechanism 311 comprises a first lifting buffer shaft 3111, a buffer groove 3112, a buffer rod 3113, a second expansion spring 3114, a second lifting buffer shaft 3115, a grinding block 3116 and a grinding groove 3117, the first lifting buffer shaft 3111 is mounted at the central position of the lower end face of the roller support 39, the buffer groove 3112 is formed at the lower end of the first lifting buffer shaft 3111, a stop block is arranged at the edge of the opening of the buffer groove 3112, the buffer rod 3113 is slidably arranged in the buffer groove 3112 through the second expansion spring 3114, the stop block for limiting is arranged at the top end of the buffer rod 3113, the second lifting buffer shaft 3115 is mounted at the lower end of the buffer rod 3113, the grinding block 3116 is a circular block, the middle of the lower end face of the grinding block 6 is a plane, the edge of the lower end face of the grinding block 3116 is a cambered surface, the grinding groove 3117 is of a conical structure with an upward opening, the upper end face of the grinding groove 3117 is mounted on the lower end face of the outer grinding cylinder 283, the bottom of grinding groove 3117 inboard is mutually supported with grinding block 3116 bottom surface shape, and has evenly seted up the sieve mesh on grinding groove 3117.

When the lifting buffer shaft is in specific work, the driving motor 21 drives the driven external gear ring 24 to rotate through gear transmission when being started, the driven external gear ring 24 drives the rotating shaft 23 to rotate, the guide cylinder 38 positioned on the lower end surface of the rotating shaft 23 rotates along with the rotating shaft 23, the upper end of the lifting shaft 31 enables the lifting shaft 31 to move only up and down but not rotate through the limiting block 37, the middle part of the lifting shaft 31 enables the lifting shaft 31 to always keep the trend of moving up through the limiting ring 33 and the first expansion spring 34, the lifting shaft 31 drives the walking wheel 310 to keep the trend of moving up through the roller bracket 39, at the moment, the walking wheel 310 moves along the downward convex curved surface arranged on the outer circumferential surface of the bottom end of the guide cylinder 38, so that the walking wheel 310 is pushed by the downward convex curved surface arranged on the outer circumferential surface of the bottom end of the guide cylinder 38 and moves up and down, and down through the roller bracket 39, the walking wheel 310 drives the first lifting buffer shaft 3111 to move up and down, a lift buffering axle 3111 drives grinding block 3116 up-and-down reciprocating motion through linear drive and carries out quick impact in succession by preliminary kibbling ceramic tile in to grinding groove, it is rotatory that outer grinding cylinder 283 drives grinding groove 3117 simultaneously, make grinding block 3116 grind when carrying out quick impact in succession to preliminary kibbling ceramic tile, reach and smash more thin purpose with the ceramic tile, buffer bar 3113 makes grinding block 3116 carry out certain cushion effect in succession when quick impact in succession to preliminary kibbling ceramic tile through No. two expanding spring 3114 in buffer groove 3112, fall into through the sieve mesh when being less than the sieve mesh on grinding groove 3117 by kibbling ceramic tile granule at last and connect in silo 12.

Place on the installing frame 1 under grinding groove 3117 and connect silo 12, connect silo 12 to be the ascending box structure of opening.

In addition, the invention also provides a comprehensive recovery and treatment process of the construction waste, which is mainly completed by matching the comprehensive recovery and treatment equipment of the construction waste, and comprises the following steps:

the first step is as follows: starting a driving motor 21, manually feeding the ceramic tile waste into the feeding hole 13, and primarily crushing the ceramic tile waste by using the crushing device 2;

the second step is that: the grinding device 3 is driven by the driving motor 21 to grind the primarily crushed ceramic tile waste, and the ground ceramic tile waste particles fall into the receiving trough 12 through the sieve holes when being smaller than the sieve holes on the grinding trough 3117;

a third part: when the receiving trough 12 is full, the receiving trough 12 is replaced.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a recovery processing equipment is synthesized to building rubbish, includes installing frame (1), reducing mechanism (2) and grinder (3), its characterized in that: the mounting frame (1) is of a v-21274-shaped structure with an upward opening, a mounting plate (11) is mounted at the top of the mounting frame (1), a crushing device (2) is mounted on the mounting plate (11), and a grinding device (3) is mounted on the crushing device (2), wherein:

the smashing device (2) comprises a driving motor (21), a driving gear (22), a rotating shaft (23), a driven outer gear ring (24), a driven inner gear ring (25), an annular sliding groove (26), an annular sliding block (27) and a smashing mechanism (28), wherein the driving motor (21) is installed on the upper end face of the right side of the installing plate (11), an output shaft of the driving motor (21) downwards penetrates through the installing plate (11), the driving gear (22) is installed at the lower end of the output shaft of the driving motor (21), the upper end of the rotating shaft (23) is installed at the central position of the installing plate (11) through a bearing, the driven outer gear ring (24) is sleeved and fixed on the outer wall of the middle part of the rotating shaft (23), the driving gear (22) and the driven outer gear ring (24) are mutually meshed, the annular sliding groove (26) is formed in the bottom of the installing plate (11), and the annular sliding groove (26) takes the axis of the rotating shaft (23) as the circle center, the radius of the annular sliding groove (26) is larger than the distance between the driving motor (21) and the rotating shaft (23), the annular sliding block (27) is arranged in the annular sliding groove (26) in a sliding mode, the lower end face of the annular sliding block (27) is provided with a driven inner gear ring (25), the driving gear (22) is meshed with the driven inner gear ring (25) on the inner side of the driven inner gear ring (25), and the crushing mechanism (28) is arranged on the driven inner gear ring (25) and the rotating shaft (23);

the grinding device (3) comprises a lifting shaft (31), a spring lifting groove (32), a limiting ring (33), a first expansion spring (34), a fixing block (35), a fixed lifting groove (36), a limiting block (37), a guide cylinder (38), a roller support (39), a walking wheel (310) and a buffer grinding mechanism (311), wherein the lifting shaft (31) is arranged at the center of a rotating shaft (23) in a sliding manner, the middle part of the rotating shaft (23) is provided with the spring lifting groove (32) concentric with the lifting shaft (31), the lifting shaft (31) at the upper side of the spring lifting groove (32) is fixedly sleeved with the limiting ring (33), the first expansion spring (34) is connected between the limiting ring (33) and the bottom of the spring lifting groove (32), the fixing block (35) is arranged at the middle position of the upper end surface of the mounting plate (11), the fixed lifting groove (36) is arranged at the middle part of the fixing block (35), rectangular grooves are formed in two sides of the fixed lifting groove (36), a limiting block (37) is installed at one end, in the fixed lifting groove (36), of the lifting shaft (31), rectangular blocks matched with the rectangular grooves are arranged on two sides of the limiting block (37), the guide cylinder (38) is installed on the lower end face of the rotating shaft (23), a downward convex curved surface is arranged on the outer circular face of the bottom end of the guide cylinder (38), the roller support (39) of a circular structure is installed at the lower end of the lifting shaft (31), and traveling wheels (310) are symmetrically arranged on the upper end face of the roller support (39);

the buffer grinding mechanism (311) comprises a first lifting buffer shaft (3111), a buffer groove (3112), a buffer rod (3113), a second telescopic spring (3114), a second lifting buffer shaft (3115), a grinding block (3116) and a grinding groove (3117), wherein the first lifting buffer shaft (3111) is arranged at the central position of the lower end face of the roller wheel support (39), the buffer groove (3112) is formed in the lower end of the first lifting buffer shaft (3111), a stop block is arranged at the edge of the opening of the buffer groove (3112), the buffer rod (3113) is arranged in the buffer groove (3112) in a sliding mode through the second telescopic spring (3114), the stop block used for limiting is arranged at the top end of the buffer rod (3113), the second lifting buffer shaft (3115) is arranged at the lower end of the buffer rod (3113), the grinding block (3116) is arranged at the lower end of the second lifting buffer shaft (3115), the grinding block (3116) is a round block, and the middle of the lower end face of the grinding block (3116) is a plane, the edge of the lower end face of the grinding block (3116) is an arc face, the grinding groove (3117) is a conical structure with an upward opening, the upper end face of the grinding groove (3117) is arranged on the lower end face of the outer grinding cylinder (283), the bottom of the inner side of the grinding groove (3117) is matched with the bottom face of the grinding block (3116) in shape, and sieve holes are uniformly formed in the grinding groove (3117).

2. The comprehensive recycling device for construction waste as claimed in claim 1, wherein: the crushing mechanism (28) comprises an inner crushing barrel (281), an inner crushing rod (282), an outer crushing barrel (283) and an outer crushing rod (284), wherein the inner crushing barrel (281) is of a hollow structure with two closed ends, a mounting hole is formed in the upper end face of the inner crushing barrel (281), the inner crushing barrel (281) is fixedly sleeved on the outer wall of the lower side of the rotating shaft (23) through the mounting hole, the inner crushing rod (282) is uniformly and circumferentially arranged on the outer wall of the inner crushing barrel (281) at an interval from top to bottom, the outer crushing barrel (283) is of a cylindrical structure with an upper end and a lower end both opened, the upper end face of the outer crushing barrel (283) is fixedly arranged on the lower end face of the driven inner gear ring (25) in a matching manner, the outer crushing rod (284) is uniformly and circumferentially arranged on the inner wall of the outer crushing barrel (283), and the outer crushing rod (284) is uniformly and circumferentially arranged on the inner wall of the outer crushing barrel (283) at an interval from top to bottom, the outer crushing rods (284) and the inner crushing rods (282) are arranged in a staggered mode.

3. The comprehensive recycling device for construction waste as claimed in claim 1, wherein: the annular sliding groove (26) is of a T-shaped structure, the annular sliding block (27) is matched with the annular sliding groove (26), and balls used for reducing sliding friction are uniformly arranged in the annular sliding groove (26).

4. The comprehensive recycling device for construction waste as claimed in claim 2, wherein: the corners of the lower side of the inner crushing barrel (281) are provided with inclined chamfers.

5. The comprehensive recycling device for construction waste as claimed in claim 1, wherein: the lower end face of the fixed block (35) is provided with a yielding groove (351).

6. The comprehensive recycling device for construction waste as claimed in claim 1, wherein: the grinding trough is characterized in that a material receiving trough (12) is placed on a mounting frame (1) on the right lower side of the grinding trough (3117), and the material receiving trough (12) is of a box-shaped structure with an upward opening.

7. The comprehensive recycling device for construction waste as claimed in claim 2, wherein: mounting panel (11) left side install feed inlet (13), and the slope of feed inlet (13) left side left, the lower extreme of feed inlet (13) passes mounting panel (11) and stretches into directly over to the clearance between interior crushing barrel (281) and outer crushing barrel (283).