CN113600328A

CN113600328A - Material grinding device is used in building block production

Info

Publication number: CN113600328A
Application number: CN202111183164.9A
Authority: CN
Inventors: 李庆文; 朱波; 孙珂; 国树震; 郝明; 岳晓娜; 杨新生
Original assignee: Shandong Donghua Cement Corp ltd; Jinan Wanhua Cement Co ltd
Current assignee: Jinan Wanhua Cement Co ltd; Shandong Donghua Technology Co ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2021-11-05
Anticipated expiration: 2041-10-11
Also published as: CN113600328B

Abstract

The invention discloses a material grinding device for building block production, and mainly relates to the field of mechanical equipment. Including the bottom plate, be fixed with annular base on the bottom plate, eccentric rotation has the rotation hammer on the annular base, and the crushing cover is established to the outside cover of rotation hammer, and the week side of crushing cover sets up discharging channel, and the discharging channel below sets up the revolving stage, and the revolving stage top surface is the annular end face, is equipped with on the annular end face rather than grinding complex annular abrasive brick, and annular end face week side sets up annular silo. The invention has the beneficial effects that: it is high-efficient, high-quality to the lump building block raw materials pulverize and grind.

Description

Material grinding device is used in building block production

Technical Field

The invention relates to the field of construction machinery equipment, in particular to a material grinding device for producing building blocks.

Background

In the building materials, the building block is used as a massive artificial building product with larger size, the raw material source is wide, the variety of the manufactured building blocks is wide, and the building block is suitable for building construction under various environments and is a main building material.

In the processing production of the building block, the processing of raw materials of the building block is mainly included. The raw materials of the building block are usually from local sources, the added materials are wide, and the main raw materials of the building block comprise cement, sand, stone powder, slag, tailing slag, coal gangue, fly ash and the like, and also comprise other various solid raw materials, such as building solid waste, shells, gypsum, production waste gypsum and the like. If the raw materials are non-broken blocks, the raw materials need to be crushed or ground to the required fineness, and then are stirred and mixed after being quantitatively mixed according to the corresponding proportion and then are fired. If the small raw materials such as shells, gypsum, slag and the like are small, the conventional treatment method has direct crushing and grinding process, but the fineness of the direct crushing often cannot meet the requirement, the quality of finished products is influenced, and if grinding equipment is used, the efficiency and the cost are obviously improved, so that the technical contradiction point of the raw material treatment of the building blocks is formed.

Disclosure of Invention

The invention aims to provide a material grinding device for producing building blocks, which is used for efficiently grinding and grinding block-shaped building block raw materials with high quality.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a material grinding device for building block production comprises a bottom plate, wherein an annular base is fixed on the bottom plate, a rotating piece coaxial with the annular base is connected inside the annular base in a rotating mode, the rotating piece rotates through motor driving, a disc-shaped base coaxial with the rotating piece is arranged at the top end of the rotating piece, a straight rod is connected to the top surface of the disc-shaped base through a spherical joint, the bottom end of the straight rod is eccentrically arranged relative to the top surface of the disc-shaped base, a rotating hammer is fixed at the top end of the straight rod, the bottom of the rotating hammer is a spherical hemisphere part, the top of the rotating hammer is a conical part, a circular table-shaped supporting table coaxial with the annular base is fixed at the top end of the annular base, a spherical crown-shaped groove is arranged in the middle of the top end face of the supporting table, a conical hole through which the straight rod penetrates through is formed in the supporting table up and down, and the spherical curved surface at the bottom of the groove is matched and contacted with the spherical curved surface of the hemispherical part, the outside of brace table is covered with crushing cover, crushing cover's top is equipped with rather than the fixed feed inlet of intercommunication, crushing cover's inside is equipped with big end down's toper chamber, it all is located the toper intracavity with brace table to rotate the hammer, form the unloading passageway between the inner wall in toper chamber and the global lateral wall of brace table, the below of unloading passageway corresponds is equipped with the rotation platform, the rotation platform passes through motor drive's normal running fit with annular base, the top surface that rotates the platform is equipped with the ring terminal surface, the ring terminal surface top is equipped with the annular abrasive brick, the relative bottom plate of ring abrasive brick is fixed, the bottom surface of ring abrasive brick is established to the annular abrasive brick, the distance of annular abrasive brick and ring terminal surface is d, and d reduces gradually from inside to outside, the below week that rotates the platform is equipped with the annular silo.

The annular base is provided with a rotating shaft in a penetrating manner, the rotating shaft is in running fit with the annular base through a bearing, the inner end of the rotating shaft, which is arranged in the annular base, is fixed with an inner driving bevel gear, the peripheral side of the disc-shaped base is provided with an inner driven bevel gear which is coaxial with the disc-shaped base, the inner driving bevel gear is meshed with the inner driven bevel gear, the outer part of the rotating shaft is provided with an outer driving bevel gear, the bottom surface of the rotating table is fixed with an outer driven bevel gear which is coaxial with the rotating table, the outer driving bevel gear is meshed with the outer driven bevel gear, and the rotating shaft is driven by a motor.

The spherical joint connection structure comprises a concave cavity eccentrically arranged on the end face of the top end of the disc-shaped base, the concave cavity is in a segment shape, a ball head capable of rolling in the concave cavity is arranged in the concave cavity in a clearance fit mode, and the ball head is exposed on the peripheral face of the outer side of the concave cavity and fixedly connected with the bottom end of the straight rod.

The feed inlet and the crushing cover are externally sleeved with a machine shell, the bottom side of the machine shell is fixedly and hermetically connected with the bottom side of the crushing cover, the top side of the machine shell is fixedly and hermetically connected with the opening edge of the feed inlet, a containing cavity is arranged between the machine shell and the crushing cover, and sound absorbing cotton is filled in the containing cavity.

The bottom side fixedly connected with guide housing of brace table, the guide housing is big end down's toper cover, the guide housing is located the below of unloading passageway, the guide housing is located the top of revolving stage, the upside fixed connection of guide housing is in the week side of brace table bottom, the outer peripheral face of guide housing links up with the outer peripheral face of brace table mutually, the outer peripheral face of guide housing is located the top of annular end face.

An inner mounting table is fixed on the circumferential surface of the inner ring of the annular base, the inner mounting table is in an annular disc shape, a lower flange piece is fixed at the bottom end of the rotating piece, and the lower flange piece and the inner mounting table are rotatably mounted through a bearing piece;

the annular base is characterized in that an annular upper mounting table is arranged on the outer side wall of the upper portion of the annular base, the rotating table is an annular table top, an upper flange piece is fixed on the inner ring of the rotating table, and the upper flange piece and the upper mounting table are in running fit through a bearing piece.

The annular end face is an inclined plane which inclines downwards from inside to outside, the annular grinding face is also an inclined plane which inclines downwards from inside to outside, and the downward inclination amplitude of the annular grinding face is larger than that of the annular end face.

The annular end face is provided with a convex edge, and the convex edge is an arc-shaped convex edge.

The annular silo includes annular tank bottom, annular tank bottom is the annular plate, baffle in the inner circle fixedly connected with of annular tank bottom, the outer baffle of outer lane fixedly connected with of annular tank bottom, interior baffle and outer baffle are the cylindric coaxial with annular tank bottom respectively, the diameter of interior baffle is less than the external diameter of revolving stage, the top side setting of interior baffle is in the revolving stage below, annular tank bottom is the inclined plane, and the low side of annular tank bottom is equipped with discharging channel.

Compared with the prior art, the motor has the advantages that:

through the preliminary crushing of rotating the hammer to and the secondary grinding of annular abrasive brick, can obtain the building block raw materials powder that accords with the production requirement, the handling capacity is big, and is efficient, can realize serialization high strength production through smashing earlier and grinding again. And the balance of two-step processing capacity is realized through the dispersive shunting of materials, and the high-efficiency and high-quality grinding effect on the building block raw materials is obtained.

Drawings

Fig. 1 is an overall schematic view of the present invention.

Fig. 2 is an overall schematic of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a side view of the present invention.

Fig. 5 is a schematic diagram of the assembly of the present invention with its components separated.

Fig. 6 is an internal structural view of the present invention.

Fig. 7 is an internal structural view of the present invention.

FIG. 8 is an enlarged view of portion A of FIG. 7 according to the present invention.

Reference numerals shown in the drawings:

1. a base plate; 2. a host chassis; 3. an annular base; 4. an inner mounting table; 5. a rotating member; 6. a lower flange member; 7. a disc-shaped base; 8. an inner driven bevel gear; 9. an inner drive bevel gear; 10. an outer drive bevel gear; 11. a rotating shaft; 12. an externally driven bevel gear; 13. a ball head; 14. a straight rod; 15. rotating the hammer; 16. a support table; 17. a spherical crown shaped groove; 18. a tapered hole; 19. a crushing cover; 20. a blanking channel; 21. a feed inlet; 22. a housing; 23. an accommodating chamber; 24. a guide housing; 25. a rotating table; 26. an upper mounting table 27, an upper flange; 28. an annular end face; 29. convex edges; 30. a ring-shaped grinding block; 31. annular grinding surface; 32. an annular trough; 33. the bottom of the annular groove; 34. an inner baffle; 35. an outer baffle; 36. a discharge passage.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.

The instruments, reagents, materials and the like used in the following examples are conventional instruments, reagents, materials and the like in the prior art and are commercially available in a normal manner unless otherwise specified. Unless otherwise specified, the experimental methods, detection methods, and the like described in the following examples are conventional experimental methods, detection methods, and the like in the prior art.

Example (b): material grinding device is used in building block production

As shown in fig. 1 to 8, the portable electric tool comprises a bottom plate 1, the bottom plate 1 is used for supporting and installing other components, and a supporting frame can be used at the bottom of the bottom plate 1, or the bottom plate 1 can be directly dropped on an operation table or on a ground table for use. The bottom plate 1 can be fixed on a platform through bolts, so that the stability in production is ensured, and the shaking is prevented.

A host case 2 is arranged on one side of the bottom plate 1, and power and control components such as a motor and a motor controller are arranged in the host case 2.

Be equipped with on the bottom plate 1 rather than fixed welded annular base 3, install platform 4 in being fixed with on annular base 3's the inner circle global, interior install platform 4 is the annular disc, and the outer lane welded fastening of interior install platform 4 is at annular base 3's inner wall, rotate on the interior install platform 4 and install a rotation piece 5, it is cylindric as the figure of this example shows to rotate piece 5, the bottom mounting that rotates piece 5 has lower flange spare 6, install the bearing spare between lower flange spare 6 and the interior install platform 4, realize rotating the smooth rotation of 5 relative annular base 3.

The top of rotating piece 5 is equipped with rather than coaxial disk base 7, the week side of disk base is equipped with rather than coaxial interior driven bevel gear 8, the eccentric cavity that is equipped with on the top terminal surface of disk base, the cavity is the segment of a sphere shape, clearance fit has bulb 13 that can roll in the cavity, bulb 13 exposes fixedly connected with straight-bar 14 on the global outside the cavity, the top fixedly connected with of straight-bar 14 rotates hammer 15, the bottom of rotating hammer 15 is the hemisphere portion of spherical crown shape, and the bottom surface of hemisphere portion is the sphere, the top of rotating hammer 15 is conical toper portion.

The top of annular base 3 is fixed with brace table 16, brace table 16 is rather than coaxial round platform shape, the top end face of brace table 16 sets up spherical crown shape recess 17 placed in the middle, the tank bottom spherical surface of recess is corresponding with the bottom sphere that rotates hammer 15, the hemisphere portion that rotates hammer 15 sets up in the recess, makes the hemisphere portion that rotates hammer 15 can realize joint cooperation with the recess.

The supporting table 16 is internally provided with a tapered hole 18 which is communicated up and down, the top outlet of the tapered hole 18 is arranged in the bottom surface of the groove in the middle, the bottom opening of the tapered hole 18 is larger than the top opening and is in a horn mouth shape with a narrow top and a large bottom, and the straight rod 14 penetrates through the tapered hole 18 to realize the connection of the ball head 13 and the rotating hammer 15. The shape of the tapered hole 18 can provide a suitable space for the rotation of the straight rod 14.

Based on above-mentioned structure, when rotating piece 5 and rotating, based on bulb 13 and the eccentric just joint complex structure that is of disk type base, can drive the eccentric rotation of the rotation hammer 15 that is located the recess.

The outer part of the supporting platform 16 is covered with a crushing cover 19, the crushing cover 19 is a conical cover with a small upper part and a big lower part, and the crushing cover 19 is a metal part, has a wall thickness not less than 10cm, can bear impact, and is firm and durable. The inside of smashing cover 19 is equipped with big end down's toper chamber, rotary hammer 15 and brace table 16 all are located the toper intracavity, form unloading passageway 20 between the global lateral wall of the inner wall in toper chamber and brace table 16.

The top of crushing cover 19 is equipped with rather than the fixed feed inlet 21 of intercommunication, feed inlet 21 is the horn mouth structure, the feeding of being convenient for.

The feed inlet 21 and the crushing cover 19 are of an integral structure, the shell 22 is sleeved outside the feed inlet 21 and the crushing cover 19, the bottom side of the shell 22 is fixedly and hermetically connected with the bottom side of the crushing cover 19, the top side of the shell 22 is fixedly and hermetically connected with the opening edge of the feed inlet 21, a containing cavity 23 is arranged between the shell 22 and the crushing cover 19, and sound absorbing cotton is filled in the containing cavity 23 to reduce noise.

The casing 22 is fixed on the host case 2 through an L-shaped bracket, so that the casing 22 is fixed.

The bottom side of the supporting platform 16 is fixedly connected with a guide cover 24, the guide cover 24 is a tapered cover with a small upper part and a large lower part, the upper side of the guide cover 24 is fixedly connected with the periphery of the bottom of the supporting platform 16, the outer peripheral surface of the guide cover 24 is connected with the outer peripheral surface of the supporting platform 16, further guide of falling materials is achieved, and the falling materials continue to fall in an outward dispersed manner.

What the below of unloading passageway 20 corresponds is equipped with rotates the platform 25, it is located the below of uide shield 24 to rotate the platform 25 for the uide shield 24 is located between unloading passageway 20 and the rotation platform 25, to the material that falls to the direction on the rotation platform 25, be equipped with annular last mount table 26 on the upper portion outside lateral wall of annular base 3, it is annular mesa to rotate the platform 25, the inner circle of rotating platform 25 is fixed with upper flange spare 27, realize normal running fit through the bearing spare between upper flange spare 27 and the last mount table 26, thereby make the rotation platform 25 can overlap and locate annular base 3 outsidely to with annular base 3 normal running fit.

The top end face of the rotating table 25 is provided with an annular end face 28, and the annular end face 28 is an inclined plane inclined downwards from inside to outside, so that materials can conveniently go downwards and outwards. The annular end face 28 is provided with a convex edge 29, the convex edge 29 is an arc-shaped convex edge 29, and the convex edge 29 has the functions of increasing the grinding effect and guiding materials outwards. Due to the rotation of the rotary table 25 and the downward inclination of the annular end face 28, the material can be well centrifugally discharged outwards.

The annular base 3 is provided with a rotating shaft 11 in a penetrating manner, the rotating shaft 11 is in rotating fit with the annular base 3 through a bearing, the inner end of the rotating shaft 11 arranged in the annular base 3 is fixed with an inner driving bevel gear 9, the inner driving bevel gear 9 is meshed with an inner driven bevel gear 8, the outer part of the rotating shaft 11 is provided with an outer driving bevel gear 10, the bottom surface of the rotating table 25 is fixed with an outer driven bevel gear 12 which is coaxial with the rotating table, the outer driving bevel gear 10 is meshed with the outer driven bevel gear 12, so that the rotating hammer 15 and the rotating table 25 are driven through the rotating shaft 11, the power assembly is reduced, the equipment structure is simplified, and the motor cost is reduced. The main machine case 2 is internally provided with a motor, and an output shaft of the motor is fixedly connected with the rotating shaft 11 through a key.

An annular grinding block 30 coaxial with the annular end face 28 is arranged above the annular end face 28, the annular grinding block 30 is fixed on the mainframe box 2 through an L-shaped support, the bottom face of the annular grinding block 30 is an annular grinding face 31 inclined downwards from inside to outside, the inclination of the annular grinding face 31 is greater than that of an annular table top, so that the distance between the inner ring and the annular end face 28, which is close to the annular grinding face 31, is greater than the distance between the outer ring of the annular grinding face 31 and the annular end face 28, and if the vertical distance between the annular grinding face 31 and the annular end face 28 is defined as d, d is gradually reduced from inside to outside, so that the effect of gradually thinning the grinding degree from inside to outside is obtained.

Based on the centrifugal effect, combined with the inclined surface effect, the raw material powder ground into powder falls from the periphery of the annular end surface 28, completing the whole grinding process.

The below of revolving stage 25 is equipped with annular silo 32, annular silo 32 is fixed on bottom plate 1, annular silo 32 includes annular tank bottom 33, annular tank bottom 33 is the annular plate, baffle 34 in the inner circle fixedly connected with of annular tank bottom 33, the outer baffle 35 of the outer lane fixedly connected with of annular tank bottom 33, interior baffle 34 and outer baffle 35 are respectively for the cylindric coaxial with annular tank bottom 33, the diameter of interior baffle 34 is less than the external diameter of revolving stage 25, the top side of interior baffle 34 sets up in revolving stage 25 below, the diameter of outer baffle 35 is greater than the external diameter of revolving stage 25 to make annular silo 32 set up below for encircleing revolving stage 25 week side, can connect the material of getting from revolving stage 25 week side and falling.

The annular groove bottom 33 is an inclined surface, preferably inclined downward from one side of the main machine case 2 to the other side, and the lower end of the annular groove bottom 33 is provided with a discharge channel 36 for collecting and guiding out the powder in a centralized manner.

Through the structure, the operation principle of the device is as follows:

raw materials building block raw materials pass through the feed inlet 21 on top and get into the toper chamber downwards, high-speed eccentric rotation through rotating hammer 15, the toper of rotating hammer 15 is global to form first breakage to raw materials piece with toper intracavity wall, the process is comparatively violent and high-efficient, crushing effect is good, but the fineness is not enough, through kibbling raw materials crushed aggregates from unloading passageway 20 fall down, the direction through guide housing 24 falls on the rotation platform 25, realize the relative grinding effect with annular grinding block 30 through the rotation of rotating platform 25, can outwards throw away the qualified raw materials powder of grinding based on centrifugal force and fall into annular silo 32 smoothly, and unify the ejection of compact from discharging channel 36.

Through the preliminary crushing of rotary hammer 15 to and the secondary grinding of annular grinding block 30, can obtain the raw materials powder that accords with the building block production requirement, specifically have following advantage:

1) be particularly suitable for handling the rough grinding processing of cubic raw materials, if directly go up the mill with cubic raw materials, load to the mill is great, and production efficiency is not high, if use pair roller structure breakage, then the fineness can not reach the requirement and the easy card of garrulous fritter goes into the gap (the uneven size of building block raw materials, often can be mingled with very tiny fragment), and this device uses violent striking earlier to smash and carries out preliminary smashing, the pressure that greatly reduced ground, make the material that gets into the grinding link be tiny crushed aggregates already, can be ground the completion fast, the design of grinding process is fit for very much to raw materials building block raw materials, can realize high-efficiently, high-quality grinding effect.

2) The throughput of rotating hammer 15 is big, and the process of grinding compares more need time, and this scheme distributes through the reposition of redundant personnel to the material, realizes the balance to the two, and through kibbling material through guide housing 24 to diffusion reposition of redundant personnel all around, and the annular grinding block 30 of bigger diameter increases the grinding area, fast digestion and the kibbling material of processing.

3) The rotation of rotating table 25 compromises the ejection of compact and grinds the power effect, through the gap control ejection of compact between 31 outer fringe of annular mill face and the annular terminal surface 28, based on centrifugal action, the powder of grinding completion can be quick throws away rotating table 25, gives out the space for the crushed aggregates that other needs ground to the limit is ground the limit and is arranged the material, and what grind the completion is discharged fast, does not pile up in the module below, does not occupy the mill face area, improves grinding efficiency greatly. A continuous and efficient grinding operation can be achieved.

Claims

1. A material grinding device for building block production is characterized by comprising a bottom plate, wherein an annular base is fixed on the bottom plate, a rotating part coaxial with the annular base is rotatably connected inside the annular base, the rotating part is driven by a motor, a disc-shaped base coaxial with the rotating part is arranged at the top end of the rotating part, a straight rod is connected onto the top surface of the disc-shaped base through a spherical joint, the bottom end of the straight rod is eccentrically arranged relative to the top surface of the disc-shaped base, a rotating hammer is fixed at the top end of the straight rod, the bottom of the rotating hammer is a spherical-crown-shaped hemisphere, the top of the rotating hammer is a conical tapered part, a circular-table-shaped supporting table coaxial with the annular base is fixed at the top end of the annular base, a spherical-crown-shaped groove is arranged in the middle of the top end surface of the supporting table, and a tapered hole for the straight rod to penetrate through is arranged in the supporting table in a vertically through manner, the spherical curved surface of the groove bottom of the groove is adapted to and contacted with the spherical curved surface of the semisphere part, the grinding cover is covered outside the supporting platform, the top end of the crushing cover is provided with a feed inlet which is communicated and fixed with the crushing cover, a conical cavity with a small upper part and a big lower part is arranged inside the crushing cover, the rotary hammer and the supporting platform are both positioned in the conical cavity, a blanking channel is formed between the inner wall of the conical cavity and the peripheral side wall of the supporting platform, a rotary platform is correspondingly arranged below the blanking channel, the rotary table is rotationally matched with the annular base through the driving of a motor, the top surface of the rotary table is provided with an annular end surface, an annular grinding block is arranged above the annular end face, the annular grinding block is fixed relative to the bottom plate, the bottom surface of the annular grinding block is an annular grinding surface, the distance between the annular grinding surface and the annular end surface is d, the distance d is gradually reduced from inside to outside, and an annular trough is arranged on the periphery of the lower portion of the rotating table.

2. The material grinding device for building block production according to claim 1, wherein a rotating shaft penetrates through the annular base, the rotating shaft is rotatably matched with the annular base through a bearing, an inner driving bevel gear is fixed at an inner end of the rotating shaft arranged in the annular base, an inner driven bevel gear coaxial with the inner driving bevel gear is arranged on the periphery side of the disc-shaped base, the inner driving bevel gear is meshed with the inner driven bevel gear, an outer driving bevel gear is arranged outside the rotating shaft, an outer driven bevel gear coaxial with the outer driving bevel gear is fixed on the bottom surface of the rotating table, the outer driving bevel gear is meshed with the outer driven bevel gear, and the rotating shaft is driven by a motor.

3. The material grinding device for the production of building blocks as claimed in claim 1, wherein the specific structure of the spherical joint connection comprises that a concave cavity is eccentrically arranged on the top end surface of the disc-shaped base, the concave cavity is in a segment shape, a ball head capable of rolling in the concave cavity is in clearance fit in the concave cavity, and the peripheral surface of the ball head exposed outside the concave cavity is fixedly connected with the bottom end of the straight rod.

4. The material grinding device for the production of building blocks as claimed in claim 1, wherein a casing is sleeved outside the feed inlet and the crushing cover, the bottom side of the casing is fixedly and hermetically connected with the bottom side of the crushing cover, the top side of the casing is fixedly and hermetically connected with the opening edge of the feed inlet, an accommodating cavity is arranged between the casing and the crushing cover, and sound absorbing cotton is filled in the accommodating cavity.

5. The material grinding device for building block production as claimed in claim 1, wherein a guide cover is fixedly connected to the bottom side of the support platform, the guide cover is a tapered cover with a small top and a large bottom, the guide cover is located below the blanking channel, the guide cover is located above the rotating platform, the upper side of the guide cover is fixedly connected to the periphery of the bottom of the support platform, the outer peripheral surface of the guide cover is connected with the outer peripheral surface of the support platform, and the outer peripheral surface of the guide cover is located above the annular end surface.

6. The material grinding device for producing the building blocks as claimed in claim 1, wherein an inner mounting table is fixed on the circumferential surface of the inner ring of the annular base, the inner mounting table is in an annular disc shape, a lower flange piece is fixed at the bottom end of the rotating piece, and the lower flange piece and the inner mounting table are rotatably mounted through a bearing piece;

7. The material grinding device for the production of building blocks as claimed in claim 1, wherein the annular end face is a slope inclined downward from inside to outside, the annular grinding face is also a slope inclined downward from inside to outside, and the downward inclination of the annular grinding face is greater than that of the annular end face.

8. The material grinding device for producing the building blocks as claimed in claim 1, wherein the annular end surface is provided with a convex edge, and the convex edge is an arc-shaped convex edge.

9. The material grinding device for producing building blocks as claimed in claim 1, wherein the annular trough includes an annular trough bottom, the annular trough bottom is an annular plate, an inner ring of the annular trough bottom is fixedly connected with an inner baffle, an outer ring of the annular trough bottom is fixedly connected with an outer baffle, the inner baffle and the outer baffle are respectively cylindrical and coaxial with the annular trough bottom, the diameter of the inner baffle is smaller than the outer diameter of the rotating table, the top side of the inner baffle is arranged below the rotating table, the annular trough bottom is an inclined plane, and the lower end of the annular trough bottom is provided with a discharging channel.