阅读说明：本技术 一种硅酸盐水泥制备方法 (Preparation method of portland cement ) 是由 邹邦彦 于 2021-01-04 设计创作，主要内容包括：本发明涉及一种硅酸盐水泥制备方法,其使用了一种球磨机,该球磨机包括底板、安装板、研磨装置与刮壁装置,采用上述球磨机制备硅酸盐水泥时的具体方法流程如下：生料制备、煅烧熟料、熟料冷却、水泥成型与检验包装,研磨装置包括驱动电机、筒体、内衬板、送料管、进料口、出料口、盛料架、隔仓板与钢球,刮壁装置包括支撑杆、升降筒、连接杆、刮头、固定杆与辅助机构。本发明在通过研磨装置将原材料研磨成粉料时,通过刮壁装置及时地将粘附在筒体内壁上的粉料刮落,防止造成浪费,同时避免在这部分粉料的缓冲作用的影响下降低钢球的研磨效果,此外刮壁装置还能够定期地对刮头进行清理,防止刮头上粘附的粉料过多而影响刮壁效果。(The invention relates to a preparation method of portland cement, which uses a ball mill, wherein the ball mill comprises a bottom plate, a mounting plate, a grinding device and a wall scraping device, and the specific method flow when the ball mill is adopted for preparing the portland cement is as follows: raw material preparation, clinker calcination, clinker cooling, cement molding, inspection and packaging, wherein the grinding device comprises a driving motor, a cylinder body, an inner lining plate, a feeding pipe, a feeding hole, a discharging hole, a material containing frame, a partition plate and steel balls, and the wall scraping device comprises a supporting rod, a lifting cylinder, a connecting rod, a scraping head, a fixing rod and an auxiliary mechanism. When the raw material is ground into powder by the grinding device, the powder adhered to the inner wall of the cylinder is scraped off in time by the wall scraping device, so that waste is prevented, the influence of the buffer action of the powder on the part is avoided, the grinding effect of the steel ball is reduced, and in addition, the wall scraping device can also clean the scraping head periodically, so that the influence of excessive powder adhered to the scraping head on the wall scraping effect is prevented.)

1. A portland cement preparation method, it has used a kind of ball mill, this ball mill includes the bottom plate (1), mounting panel (2), grinder (3) and scrapes the wall device (4), characterized by that: the specific method flow for preparing the portland cement by adopting the ball mill is as follows:

s1, raw material preparation: crushing limestone and clay by a crusher, and finely grinding the crushed limestone and clay into powder by a ball mill according to a proportion for later use;

s2, calcining clinker: feeding the powder obtained after the S1 treatment into a cement rotary kiln to be calcined to a molten state to prepare the required calcium silicate clinker;

s3, cooling clinker: cooling the calcium silicate clinker to a temperature which can be withstood by downstream equipment by using a cement clinker cooler;

s4, cement forming, namely grinding the calcium carbonate clinker, the gelling agent and the performance adjusting material to a specified granularity by using a grinding machine to obtain finished cement;

s5, inspecting and packaging: inspecting finished cement, bagging the qualified cement according to a specified specification, and finally transferring the bagged cement to a warehouse for centralized storage;

the upper end of the bottom plate (1) is provided with mounting plates (2) in bilateral symmetry, grinding devices (3) are arranged between the mounting plates (2) in bilateral symmetry, and wall scraping devices (4) are arranged in the grinding devices (3);

the grinding device (3) comprises a driving motor (31), a cylinder body (32), an inner lining plate (33), a feeding pipe (34), a feeding hole (35), a discharging hole (36), a material containing frame (37), a partition plate (38) and steel balls (39), wherein the driving motor (31) is arranged on the side wall of the mounting plate (2) on the right side of the bottom plate (1) through a motor base, an output shaft of the driving motor (31) is connected with the right end of the cylinder body (32) through a coupler, the cylinder body (32) is integrally of a detachable structure, the inner lining plate (33) is detachably arranged on the inner wall of the cylinder body (32), the feeding pipe (34) transversely penetrates through the middle of the cylinder body (32), the left end of the feeding pipe (34) is rotatably connected with the side wall of the mounting plate (2) on the left side of the bottom plate (1), a material guide groove, the upper end of the left side of the guide chute is provided with a material receiving port, the lower end of the guide chute is sequentially provided with a plurality of feeding ports from left to right, the upper end of the left side of the cylinder body (32) is provided with a feeding port (35), the feeding port (35) is communicated with the material receiving port, the lower end of the right side of the cylinder body (32) is provided with a discharging port (36), the discharging port (36) is positioned in the material containing frame (37), the cross section of the material containing frame (37) is of a U-shaped structure, the material containing frame (37) is arranged on the bottom plate (1) through a connecting rod, the lower end of the material containing frame (37) is provided with a discharging port, the middle part of the feeding pipe (34) is sleeved with a bin separating plate (38), the outer wall of the bin separating plate (38) is tightly attached to the inner wall of the cylinder body (32), a plurality of steel, the diameter of the steel ball (39) positioned at the left side of the partition plate (38) is larger than that of the steel ball (39) positioned at the right side of the partition plate (38);

the wall scraping device (4) comprises supporting rods (41), lifting cylinders (42), connecting rods (43), scraping heads (44), fixing rods (45) and auxiliary mechanisms (46), wherein two groups of supporting rods (41) which are transversely and uniformly arranged are symmetrically arranged at the upper end and the lower end of a feeding pipe (34), the lifting cylinders (42) are sleeved at one ends of the supporting rods (41) which are not connected with the feeding pipe (34) in a sliding fit mode, the left and right adjacent lifting cylinders (42) are connected through the connecting rods (43), the scraping heads (44) are arranged at one ends, close to the inner wall of a barrel body (32), of the lifting cylinders (42), the front side and the rear side of each scraping head (44) are connected with the side wall of the feeding pipe (34) through the fixing rods (45), and the auxiliary mechanisms (46) are uniformly arranged in mounting grooves at the side walls of the four lifting cylinders (42) positioned at the;

the scraping head (44) comprises a fixing plate (441), a scraping plate (442), a transverse moving plate (443), a reset spring (444) and a connecting sliding block (445), the fixing plate (441) is connected with the side wall of the feeding pipe (34) through a fixing rod (45), a square through hole is formed in the middle of the fixing plate (441), transverse moving sliding grooves communicated with the square through hole are symmetrically formed in the front and the rear of the square through hole, the scraping plate (442) is arranged in the square through hole in a sliding mode, the transverse moving plate (443) is arranged on the transverse moving sliding grooves in a sliding mode, the connecting sliding block (445) is arranged at the lower end of the transverse moving plate (443), the reset spring (444) is connected between the connecting sliding block (445) and the transverse moving sliding grooves, the inner side of the.

2. A method of producing portland cement according to claim 1, wherein: the bin separation plate (38) comprises a material conveying plate (381), a bearing plate (382), bearing springs (383) and a material baffle plate (384), the material conveying plate (381) is sleeved on the feeding pipe (34), a plurality of material conveying holes are formed in the side wall of the material conveying plate (381), a bearing sliding groove corresponding to the material conveying holes in a one-to-one mode is formed in the right side of the material conveying plate (381), the bearing sliding groove is located below the material conveying holes, the bearing plate (382) is slidably mounted in the bearing sliding groove, the bearing springs (383) are mounted between the lower end of the bearing plate (382) and the bearing sliding groove, the right end of the bearing plate (382) is tightly attached to the left end of the material baffle plate (384), the material baffle plate (384) is sleeved on the feeding pipe (34), blanking holes corresponding to the positions of the bearing plate (382) in a one-to-one mode are formed in the material baffle plate.

3. A method of producing portland cement according to claim 1, wherein: auxiliary mechanism (46) are including auxiliary motor (461), dwang (462), rotation cam (463) and jacking pole (464), auxiliary motor (461) pass through the motor cabinet and install on mounting groove right-hand member inner wall, auxiliary motor (461) output shaft is connected with dwang (462) right-hand member through the shaft coupling, dwang (462) left end and mounting groove left end inner wall rotate to be connected, dwang (462) overcoat is established and is installed rotation cam (463), the equal bilateral symmetry in both sides has jacking pole (464) about rotation cam (463), jacking pole (464) one end is hugged closely mutually with rotation cam (463) lateral wall, jacking pole (464) other end passes the conveying pipe lateral wall through sliding fit mode and is connected with a lift section of thick bamboo (42) lateral wall nearest rather than.

4. A method of producing portland cement according to claim 1, wherein: the scraper blade (442) includes installation end (442a) and clearance end (442b) two parts, and installation end (442a) slidable mounting is in square through-hole, and installation end (442a) lower extreme hugs closely with connecting slider (445) mutually, and clearance end (442b) is installed through the bolt in installation end (442a) upper end.

5. A method of producing portland cement according to claim 2, wherein: the upper end surface of the bearing plate (382), the material conveying hole and the material discharging hole are all of an inclined structure with the height gradually reduced from left to right.

6. A method of producing portland cement according to claim 1, wherein: the lower end of the guide chute is of an inclined structure with the height gradually reduced from left to right, and the diameter of a feeding hole formed in the lower end of the guide chute tends to gradually increase from left to right.

Technical Field

The invention relates to the field of cement, in particular to a preparation method of portland cement.

Background

The hydraulic cementing material is made up by grinding silicate cement clinker mainly containing calcium silicate, limestone less than 5% or granulated blast furnace slag and proper quantity of gypsum, and is called silicate cement, and is called Portland cement internationally.

In the preparation process of portland cement, raw materials such as limestone, clay and the like need to be ground into powdery materials for later use, and some problems exist in the process:

(1) at present, a ball mill is generally used for grinding powder, raw materials are gradually ground into powder through irregular collision of steel balls, part of the powder is easy to adhere to the inner wall of a cylinder body due to impact of the steel balls, if the powder is not cleaned for a long time, waste of the raw materials is caused, and in addition, due to the fact that the powder is adhered to the inner wall of the cylinder body, the powder can play a certain buffering effect when the steel balls collide with the cylinder body, the impact force of the steel balls is weakened, and the grinding effect is reduced;

(2) at present, part of manufacturers select to clean the barrel regularly to scrape the powder adhered to the inner wall of the barrel, equipment needs to be shut down during cleaning, production efficiency of the manufacturers is reduced, in addition, the powder is not timely treated after being adhered, after the steel balls collide for a long time, the powder is hardened into a crust, and the later cleaning difficulty is large.

In order to solve the problems, the invention provides a preparation method of portland cement.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:

a method for preparing Portland cement uses a ball mill, the ball mill comprises a bottom plate, a mounting plate, a grinding device and a wall scraping device, and the specific method flow when the ball mill is used for preparing the Portland cement is as follows:

s1, raw material preparation: crushing limestone and clay by a crusher, and finely grinding the crushed limestone and clay into powder by a ball mill according to a proportion for later use;

s2, calcining clinker: feeding the powder obtained after the S1 treatment into a cement rotary kiln to be calcined to a molten state to prepare the required calcium silicate clinker;

s3, cooling clinker: cooling the calcium silicate clinker to a temperature which can be withstood by downstream equipment by using a cement clinker cooler;

s4, cement forming, namely grinding the calcium carbonate clinker, the gelling agent and the performance adjusting material to a specified granularity by using a grinding machine to obtain finished cement;

s5, inspecting and packaging: inspecting finished cement, bagging the qualified cement according to a specified specification, and finally transferring the bagged cement to a warehouse for centralized storage;

mounting plates are symmetrically mounted at the upper end of the bottom plate in the left-right direction, grinding devices are mounted between the mounting plates symmetrically arranged in the left-right direction, and wall scraping devices are mounted in the grinding devices;

the grinding device comprises a driving motor, a cylinder body, an inner lining plate, a feeding pipe, a feeding port, a discharging port, a material containing frame, a partition plate and steel balls, wherein the driving motor is arranged on the side wall of a mounting plate on the right side of a bottom plate through a motor base, an output shaft of the driving motor is connected with the right end of the cylinder body through a coupler, the whole cylinder body is of a detachable structure, the inner lining plate is arranged on the inner wall of the cylinder body in a detachable mode, the feeding pipe is transversely installed in the middle of the cylinder body in a penetrating mode, the left end of the feeding pipe is rotatably connected with the side wall of the mounting plate on the left side of the bottom plate, a material guide groove is formed in the left side of the feeding pipe, an installation groove is formed in the middle of the feeding pipe, the upper end of the left, the cross section of the material containing frame is of a character structure, the material containing frame is installed on the bottom plate through a connecting rod, a discharge hole is formed in the lower end of the material containing frame, powder is guaranteed to be discharged from the lower portion of the barrel all the time, a partition plate is sleeved in the middle of a feeding pipe, the outer wall of the partition plate is tightly attached to the inner wall of the barrel, a plurality of steel balls are placed in a cavity between the left side of the barrel and the partition plate and a cavity between the right side of the barrel and the partition plate, and the diameter of the steel ball on the left side of the partition plate is larger than that of the; the barrel is driven to rotate by the driving motor, the steel balls can grind powder in the barrel in the rotating process of the barrel, the powder meeting the requirement after being ground by the steel balls on the left side of the partition plate falls into a cavity between the barrel and the right side of the partition plate through the partition plate so as to carry out secondary grinding on the powder, and the powder meeting the requirement after secondary grinding falls into a collection container prepared for realization through a discharge port and a discharge port.

The wall scraping device comprises supporting rods, lifting cylinders, connecting rods, scraping heads, fixing rods and auxiliary mechanisms, wherein two groups of supporting rods which are transversely and uniformly arranged are symmetrically arranged at the upper end and the lower end of a feeding pipe in a bilateral mode; in the rotation process of the cylinder body, the scraping head arranged in the wall scraping device in a static state can clean powder adhered to the inner lining plate, powder waste is prevented, the grinding effect that the accumulated powder is required to be a steel ball is avoided, and in the process, the scraper blade in the scraping head is periodically driven by the auxiliary mechanism to move up and down relative to the fixed plate so as to scrape the powder adhered to the scraper blade.

The scraping head comprises a fixed plate, a scraping plate, a transverse moving plate, a reset spring and a connecting slide block, the fixed plate is connected with the side wall of the feeding pipe through a fixed rod, a square through hole is formed in the middle of the fixed plate, transverse moving chutes communicated with the square through hole are symmetrically formed in the front side and the rear side of the square through hole, the scraping plate is arranged in the square through hole in a sliding mode, the transverse moving plate is arranged on the transverse moving chutes in a sliding mode, the connecting slide block is arranged at the lower end of the transverse moving plate, the reset spring is connected between the connecting slide block and the transverse moving chutes, the inner side of; when reciprocating through complementary unit drive scraper blade, the powder that adheres to on the lateral wall around the scraper blade alright be scraped off by the fixed plate, can produce outside thrust to link block when the scraper blade moves down simultaneously for the sideslip board outwards removes, and thrust reduces when the scraper blade rebound, and under reset spring's elastic force effect, the sideslip board moves inwards, therefore the sideslip board can carry out horizontal reciprocating motion when the scraper blade up-and-down reciprocating motion, shakes off with the powder that will pile up on the sideslip board.

Preferably, the bin partition plate comprises a material conveying plate, a bearing spring and a material baffle plate, the material conveying plate is sleeved on the feeding pipe, a plurality of material conveying holes are formed in the side wall of the material conveying plate, bearing sliding grooves corresponding to the material conveying holes in position one to one are formed in the right side of the material conveying plate, the bearing sliding grooves are located below the material conveying holes, the bearing plate is slidably mounted in the bearing sliding grooves, the bearing spring is mounted between the lower end of the bearing plate and the bearing sliding grooves, the right end of the bearing plate is attached to the left end of the material baffle plate, the material baffle plate is sleeved on the feeding pipe, discharging holes corresponding to the bearing plate in position one to one are formed in the material baffle plate, and the discharging holes; after being ground by the steel balls on the left side of the partition plate, the powder with the size meeting the requirement falls on the bearing plate through the material conveying holes, the bearing plate gradually moves downwards along with the continuous increase of the powder on the bearing plate, and when the right end of the bearing plate is aligned with the opening on the left side of the discharging hole, the powder on the bearing plate can fall into a cavity formed by the right side of the partition plate and the barrel through the discharging hole.

Preferably, the auxiliary mechanism comprises an auxiliary motor, a rotating rod, a rotating cam and a jacking rod, the auxiliary motor is mounted on the inner wall of the right end of the mounting groove through a motor base, an output shaft of the auxiliary motor is connected with the right end of the rotating rod through a coupler, the left end of the rotating rod is rotatably connected with the inner wall of the left end of the mounting groove, the rotating cam is sleeved outside the rotating rod, the jacking rods are symmetrically arranged on the left side and the right side of the rotating cam, one end of each jacking rod is attached to the side wall of the rotating cam, and the other end of each jacking rod penetrates through the side wall of the feeding pipe in a sliding fit manner and; the rotating cam on the rotating rod is driven to rotate through the auxiliary motor, and the rotating cam intermittently generates outward thrust to the jacking rod in the rotating process of the rotating cam, so that the jacking rod can drive the lifting cylinder to do vertical reciprocating linear motion, and then the scraper is driven to move up and down relative to the fixed plate.

Preferably, the scraper blade includes installation end and clearance end two parts, and installation end slidable mounting is in square through-hole, and the installation end lower extreme hugs closely mutually with link block, and the clearance end is installed through the bolt in the installation end upper end, can change the clearance end according to the actual wearing and tearing condition of clearance end.

Preferably, the upper end surface of the supporting plate, the material conveying hole and the discharging hole are of an inclined structure with the height gradually reduced from left to right so as to prevent powder from being accumulated in the material conveying hole and the discharging hole and at the upper end of the supporting plate, and meanwhile, the situation that powder on the right side of the partition plate enters the left side of the partition plate through the material conveying hole, the discharging hole and the supporting plate can be reduced to a certain extent.

Preferably, the baffle box lower extreme is for turning to the slope structure that the height reduces gradually from a left side to the right, and the porthole diameter that the baffle box lower extreme was seted up is the trend of turning to the right crescent from a left side, can improve the distribution uniformity of powder to a certain extent, avoids most powder to fall down from lieing in the left porthole of baffle box, and the condition that leads to grinding homogeneity after the influence takes place.

The invention has the beneficial effects that:

1. according to the ball mill provided by the invention, when the raw material is ground into powder by the grinding device, the powder adhered to the inner wall of the lining plate of the cylinder body can be scraped off in time by the wall scraping device, so that waste is prevented, the adverse effect of the buffer action of the powder on the grinding effect of a steel ball is avoided, in addition, the wall scraping device can also be used for cleaning the scraping head periodically, and the influence of excessive powder adhered to the scraping head on the wall scraping effect is prevented.

2. According to the wall scraping device provided by the invention, in the rotation process of the barrel, the powder adhered to the inner lining plate can be cleaned by the scraping head arranged in the wall scraping device in a static state, the powder waste is prevented, and meanwhile, the grinding effect of accumulated powder due to the steel balls is avoided.

3. According to the bin partition plate provided by the invention, after being ground by the steel balls on the left side of the bin partition plate, powder with the size meeting the requirement falls on the bearing plate through the material conveying holes, the bearing plate gradually moves downwards along with the continuous increase of the powder on the bearing plate, when the right end of the bearing plate is aligned with the left opening of the discharging hole, the powder on the bearing plate can fall into a cavity formed by the right side of the bin partition plate and the barrel through the discharging hole, the upper end surface of the bearing plate, the material conveying holes and the discharging holes are of an inclined structure with the height gradually reduced from left to right so as to prevent the powder from being accumulated in the material conveying holes, the discharging holes and the upper end of the bearing plate, and the situation that the powder on the right side of the bin partition plate enters the left side of the bin partition plate through the material conveying.

Drawings

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

FIG. 1 is a flow chart of a method of the present invention;

FIG. 2 is a front cross-sectional view of the ball mill of the present invention;

FIG. 3 is a right side view of the ball mill of the present invention;

FIG. 4 is a right side view of the present invention between the material transfer plate, the support plate, and the support springs;

FIG. 5 is a right side view of the striker plate of the present invention;

FIG. 6 is an enlarged view of the invention in section X of FIG. 2;

FIG. 7 is a right side sectional view of the feed tube of the present invention and a portion of the construction of the wall scraping apparatus;

FIG. 8 is a top view of the present invention between the fixed plate, the squeegee and the traverse plate;

fig. 9 is a Y-direction partial enlarged view of fig. 2 of the present invention.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1 to 9, a method for preparing portland cement uses a ball mill, the ball mill comprises a base plate 1, a mounting plate 2, a grinding device 3 and a wall scraping device 4, and the concrete method flow when preparing portland cement by using the ball mill is as follows:

s1, raw material preparation: crushing limestone and clay by a crusher, and finely grinding the crushed limestone and clay into powder by a ball mill according to a proportion for later use;

s2, calcining clinker: feeding the powder obtained after the S1 treatment into a cement rotary kiln to be calcined to a molten state to prepare the required calcium silicate clinker;

s3, cooling clinker: cooling the calcium silicate clinker to a temperature which can be withstood by downstream equipment by using a cement clinker cooler;

s4, cement forming, namely grinding the calcium carbonate clinker, the gelling agent and the performance adjusting material to a specified granularity by using a grinding machine to obtain finished cement;

s5, inspecting and packaging: inspecting finished cement, bagging the qualified cement according to a specified specification, and finally transferring the bagged cement to a warehouse for centralized storage;

the upper end of the bottom plate 1 is provided with mounting plates 2 in bilateral symmetry, grinding devices 3 are arranged between the mounting plates 2 in bilateral symmetry, and wall scraping devices 4 are arranged in the grinding devices 3;

the grinding device 3 comprises a driving motor 31, a cylinder 32, an inner lining plate 33, a feeding pipe 34, a feeding port 35, a discharging port 36, a material containing frame 37, a partition plate 38 and steel balls 39, wherein the driving motor 31 is installed on the side wall of the installation plate 2 on the right side of the bottom plate 1 through a motor base, an output shaft of the driving motor 31 is connected with the right end of the cylinder 32 through a coupler, the cylinder 32 is integrally of a detachable structure, the inner lining plate 33 is installed on the inner wall of the cylinder 32 in a detachable mode, the feeding pipe 34 is transversely installed in the middle of the cylinder 32 in a penetrating manner, the left end of the feeding pipe 34 is rotatably connected with the side wall of the installation plate 2 on the left side of the bottom plate 1, a guide chute is arranged on the left side of the feeding pipe 34, an installation groove is arranged in the middle of the feeding, the feeding hole 35 is communicated with the receiving hole, the lower end of the right side of the barrel 32 is provided with a discharging hole 36, the discharging hole 36 is positioned in the material containing frame 37, the section of the material containing frame 37 is of a U-shaped structure, the material containing frame 37 is installed on the bottom plate 1 through a connecting rod, the lower end of the material containing frame 37 is provided with a discharging hole to ensure that powder is discharged from the lower side of the barrel 32 all the time, the middle part of the feeding pipe 34 is sleeved with a partition plate 38, the outer wall of the partition plate 38 is attached to the inner wall of the barrel 32, a plurality of steel balls 39 are respectively placed in a cavity between the barrel 32 and the left side of the partition plate 38 and a cavity between the barrel 32 and the right side of the partition plate 38, and the diameter of the steel; the barrel 32 is driven to rotate by the driving motor 31, the steel ball 39 can grind powder in the barrel 32 in the rotating process of the barrel 32, the powder with the size meeting the requirement after being ground by the steel ball 39 on the left side of the partition plate 38 falls into a cavity between the barrel 32 and the right side of the partition plate 38 through the partition plate 38 so as to carry out secondary grinding on the powder, and the powder with the size meeting the requirement after secondary grinding falls into a prepared collecting container through the discharge port 36 and the discharge port.

The bin partition plate 38 comprises a material conveying plate 381, a bearing plate 382, bearing springs 383 and a material baffle plate 384, wherein the material conveying plate 381 is sleeved on the material conveying pipe 34, a plurality of material conveying holes are formed in the side wall of the material conveying plate 381, bearing sliding grooves corresponding to the positions of the material conveying holes one by one are formed in the right side of the material conveying plate 381, the bearing sliding grooves are located below the material conveying holes, the bearing plate 382 is slidably mounted in the bearing sliding grooves, the bearing springs 383 are mounted between the lower end of the bearing plate 382 and the bearing sliding grooves, the right end of the bearing plate 382 is tightly attached to the left end of the material baffle plate 384, the material baffle plate 384 is sleeved on the material conveying pipe 34, blanking holes corresponding to the positions of the bearing plate 382 one by one are formed in the material baffle plate 384; after being ground by the steel balls 39 on the left side of the partition plate 38, the powder with the size meeting the requirement falls on the bearing plate 382 through the material transfer holes, the bearing plate 382 gradually moves downwards along with the increasing of the powder on the bearing plate 382, and when the right end of the bearing plate 382 is opposite to the left opening of the discharging hole, the powder on the bearing plate 382 can fall into a cavity formed by the right side of the partition plate 38 and the cylinder 32 through the discharging hole.

The upper end surface of the bearing plate 382, the material conveying holes and the discharging holes are all of an inclined structure with the height gradually reduced from left to right so as to prevent powder from being accumulated in the material conveying holes and the discharging holes and at the upper end of the bearing plate 382, and meanwhile, the situation that the powder on the right side of the partition plate 38 enters the left side of the partition plate 38 through the material conveying holes, the discharging holes and the bearing plate 382 can be reduced to a certain extent.

The baffle box lower extreme is for turning to the right slope structure that highly reduces gradually from a left side, and the pay-off mouth diameter that the baffle box lower extreme was seted up is the trend of turning to the right crescent from a left side, can improve the distribution homogeneity of powder to a certain extent, avoids most powder to fall from lieing in the left pay-off mouth of baffle box, and the condition that leads to influencing later grinding homogeneity takes place.

The wall scraping device 4 comprises support rods 41, lifting cylinders 42, connecting rods 43, scraping heads 44, fixing rods 45 and auxiliary mechanisms 46, wherein two groups of support rods 41 which are transversely and uniformly arranged are symmetrically arranged at the upper end and the lower end of the feeding pipe 34 in a bilateral mode, the lifting cylinders 42 are sleeved at the ends, which are not connected with the feeding pipe 34, of the support rods 41, the left and right adjacent lifting cylinders 42 are connected through the connecting rods 43, the scraping heads 44 are arranged at the ends, which are close to the inner wall of the cylinder body 32, of the lifting cylinders 42, the front side and the rear side of each scraping head 44 are connected with the side wall of the feeding pipe 34 through the fixing rods 45, and the auxiliary mechanisms 46, which are uniformly arranged in the mounting grooves, of the; during the rotation of the cylinder 32, the scraper 44 provided in the wall scraping apparatus 4 in a stationary state can clean the powder adhered to the inner liner 33 to prevent the powder from being wasted and prevent the powder from being accumulated and from having the grinding effect of the steel balls 39, and during this process, the scraper 442 of the scraper 44 is periodically driven by the auxiliary mechanism 46 to move up and down with respect to the fixed plate 441 to scrape off the powder adhered to the scraper 442.

The scraping head 44 comprises a fixing plate 441, a scraping plate 442, a transverse moving plate 443, a return spring 444 and a connecting sliding block 445, the fixing plate 441 is connected with the side wall of the feeding pipe 34 through a fixing rod 45, a square through hole is formed in the middle of the fixing plate 441, transverse moving sliding grooves communicated with the square through hole are symmetrically formed in the front side and the rear side of the square through hole, the scraping plate 442 is arranged in the square through hole in a sliding mode, the transverse moving plate 443 is arranged on the transverse moving sliding grooves in a sliding mode, the connecting sliding block 445 is arranged at the lower end of the transverse moving plate 443, the return spring 444 is connected between the connecting sliding block 445 and the transverse moving sliding grooves, the inner; when the scraper 442 is driven by the auxiliary mechanism 46 to move up and down, the powder adhered to the front and rear side walls of the scraper 442 is scraped off by the fixed plate 441, and the scraper 442 moves down to generate an outward pushing force on the connecting slider 445, so that the traverse plate 443 moves outward, the pushing force decreases when the scraper 442 moves up, and the traverse plate 443 moves inward by the elastic force of the return spring 444, so that the traverse plate 443 can horizontally reciprocate as the scraper 442 reciprocates up and down to shake off the powder accumulated on the traverse plate 443.

The auxiliary mechanism 46 comprises an auxiliary motor 461, a rotating rod 462, a rotating cam 463 and a lifting rod 464, wherein the auxiliary motor 461 is installed on the inner wall of the right end of the installation groove through a motor base, an output shaft of the auxiliary motor 461 is connected with the right end of the rotating rod 462 through a coupler, the left end of the rotating rod 462 is rotatably connected with the inner wall of the left end of the installation groove, the rotating cam 463 is sleeved outside the rotating rod 462, the lifting rods 464 are symmetrically arranged on the upper side and the lower side of the rotating cam 463 in a left-right mode, one end of the lifting rod 464 is attached to the side wall of the rotating cam 463, and the other end of the lifting rod 464 penetrates through the side wall of the; the auxiliary motor 461 drives the rotating cam 463 of the rotating rod 462 to rotate, and in the rotating process of the rotating cam 463, the rotating cam 463 intermittently generates outward thrust on the lifting rod 464, so that the lifting rod 464 can drive the lifting cylinder 42 to do vertical reciprocating linear motion, and then the driving scraper 442 moves up and down relative to the fixed plate 441.

The scraper 442 comprises a mounting end 442a and a cleaning end 442b, the mounting end 442a is slidably mounted in the square through hole, the lower end of the mounting end 442a is attached to the connecting slider 445, the cleaning end 442b is mounted at the upper end of the mounting end 442a through a bolt, and the cleaning end 442b can be replaced according to the actual wear condition of the cleaning end 442 b.

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.