CN112206707A

CN112206707A - Hybrid system is used in portland cement preparation

Info

Publication number: CN112206707A
Application number: CN202011109457.8A
Authority: CN
Inventors: 郭金生; 王林
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-01-12

Abstract

The invention relates to a mixing system for preparing portland cement, which relates to the technical field of cement preparation and comprises a mixing barrel, wherein the upper end of the mixing barrel is provided with at least one group of feeding devices, and a first-stage mixing device and a second-stage mixing device for mixing the fed materials are also arranged in the mixing barrel; the feeding device comprises a feeding pipe, an air inlet pipe, an air guide pipe, a material mixing pipe, a blower, a connecting rod, a connecting frame and an inclined air deflector; the invention has the effects of higher efficiency and more sufficient and uniform mixing of cement components in the stirring process of preparing the portland cement.

Description

Hybrid system is used in portland cement preparation

Technical Field

The invention relates to the technical field of cement preparation, in particular to a mixing system for preparing portland cement.

Background

Portland cement is a representative cement category and is also a very widely used cement category in the existing production and construction; the main mineral compositions of portland cement are tricalcium silicate, dicalcium silicate, tricalcium aluminate and tetracalcium aluminoferrite, which mainly play a role in improving the strength of cement, and reach the optimum strength of cement after drying and volatilization for a certain period of time, and are increasingly favored due to their relative price and good performance.

In the preparation process of the existing silicate, limestone and clay are generally used as main raw materials, raw materials are generated after crushing, batching and grinding, the raw materials are fed into a calcining kiln to be calcined to generate clinker, and finally, gypsum powder with a certain proportion is added into the clinker to be mixed to obtain the silicate. In the process of mixing the cement clinker and the gypsum powder, the cement clinker and the gypsum powder are usually mixed and stirred by a stirrer, and finally the cement finished product after stirring is uniformly packaged and transported.

The above prior art solutions have the following drawbacks: in the process of mixing and stirring the cement clinker and the gypsum powder by using the stirrer, the amount of the common cement clinker and the gypsum powder is very large, so that the amount of the cement clinker and the gypsum powder which are stirred in the stirrer is also very large, the stirring time in the stirrer is correspondingly longer, the cement production time is increased undoubtedly, and the production efficiency is reduced; in addition, because the stirring amount is great, insufficient stirring and uneven stirring are easy to occur in the stirring process, the quality of cement production is reduced, and the space for improvement is provided.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a mixing system for preparing portland cement, which has the effects of higher efficiency and more sufficient and uniform mixing of cement components in the stirring process of cement preparation.

The above object of the present invention is achieved by the following technical solutions:

a mixing system for silicate cement preparation comprises a mixing barrel, wherein at least one group of feeding devices are arranged at the upper end of the mixing barrel, and a first-stage mixing device and a second-stage mixing device for mixing feeding materials are also arranged in the mixing barrel;

the feeding device comprises a feeding pipe, an air inlet pipe, an air guide pipe, a mixing pipe, a blower, a connecting rod, a connecting frame and an inclined air deflector, wherein the air inlet pipe is fixedly arranged at the upper end of the mixing barrel, the feeding pipe is fixedly arranged at the side of the feeding pipe, which is far away from the mixing barrel, and is mutually communicated with the air inlet pipe, the air guide pipe is fixedly arranged at one end of the air inlet pipe and inclines towards the inner cavity of the mixing barrel, the air guide pipe is mutually communicated with the air inlet pipe, the mixing pipe is fixedly arranged at one end of the air guide pipe, which is far away from the feeding pipe, and extends towards the inner cavity of the mixing barrel, the blower is arranged at one end of the air inlet pipe, which is far away from the air guide pipe, and blows air into the air inlet pipe, the feeding pipe is positioned between the blower and the air guide, the inclined air deflector is provided with a plurality of blocks and is rotatably arranged on the connecting frame;

the primary mixing device comprises a driving motor, a fixed plate, a driving cylinder, a sleeving cylinder, an upper mixing disc and a lower mixing disc, the driving motor is arranged on the ground of an operation workshop, the fixed plate is fixedly installed on the driving motor, the driving cylinder and an output shaft of the driving motor are fixedly installed and penetrate through the fixed plate to extend into the mixing cylinder, the sleeving cylinder is rotatably installed on the fixed plate and sleeved on the driving cylinder, the outer side wall of the driving cylinder is meshed with the inner side wall of the sleeving cylinder, the upper mixing disc is fixedly installed at one end, away from the driving motor, of the driving cylinder, the lower mixing disc is fixedly installed on the outer side wall of the sleeving cylinder, the upper mixing disc is positioned above the lower mixing disc, and blanking ports are formed in the upper mixing disc and the lower mixing disc;

the two-stage mixing device comprises a material beating roller, a rotating motor, a rotating block, a material mixing rod and a material receiving barrel, wherein the material receiving barrel is fixedly arranged at the lower end of the material mixing barrel and is used for a sleeve barrel to slide and penetrate through, the material beating roller is fixedly arranged on one side, away from the upper material mixing disk, of the lower material mixing disk and extends towards the bottom of the material receiving barrel, the rotating motor is fixedly arranged on the material beating roller, a mounting groove for the rotating motor to be mounted is formed in the material beating roller, the rotating block is fixedly arranged on an output shaft of the rotating motor to rotate under the control of the rotating motor, and the material mixing rod is fixedly arranged on one side, away from the rotating motor;

the material mixing pipe is internally provided with a driving device for driving the inclined air deflector to rotate periodically, the driving device comprises driving cylinders, driving racks, connecting bars and connecting grooves, the driving cylinders are provided with two groups of driving cylinders which are respectively positioned on the outer side walls opposite to the connecting frame, the driving directions of the driving cylinders are opposite, the driving racks are respectively fixed at the output ends of the two driving cylinders, the connecting bars are fixedly arranged at the two ends of the inclined air deflector, the connecting grooves are arranged on the connecting frame and are used for the connecting bars to penetrate through and slide, and the connecting bars are meshed with the driving racks.

As the preferred technical scheme of the invention, a plurality of knockout blades are rotatably arranged on the inclined air deflector.

As a preferred technical scheme of the invention, a filter cover for the penetration of the mixing pipe is fixedly arranged on the mixing cylinder.

As a preferred technical scheme of the invention, a discharge port is arranged at the bottom of the material receiving cylinder, a discharge device is arranged at the position, close to the discharge port, of the bottom of the material receiving cylinder, the discharge device comprises a discharge pipe, a material receiving pipe, a fan-shaped sealing block and a driving pressure spring, the discharge pipe is fixedly arranged at the bottom of the material receiving cylinder and is mutually communicated with the discharge port, the material receiving pipe is slidably sleeved on the discharge pipe, the fan-shaped sealing block is circumferentially and rotatably arranged on the inner side wall of the material receiving pipe, the fan-shaped sealing blocks are mutually matched to block the inner cavity of the material receiving pipe, one end of the driving pressure spring is fixedly arranged on the inner side wall of the material receiving pipe, and the other end of.

As a preferred technical scheme of the invention, one end of the material receiving pipe, which is close to the discharge pipe, is integrally provided with a plurality of connecting hooks which are in sliding and abutting contact with the outer side wall of the discharge pipe, the discharge pipe is provided with clamping holes for the connecting hooks to be inserted and clamped, the clamping holes comprise discharge holes and blocking holes, and the discharge holes are positioned above the blocking holes; a pulling ring is integrally arranged on the side wall of the connecting hook.

As a preferred technical scheme, a sealing ring which is in sliding contact with the inner side wall of the material receiving pipe is arranged at the end part, far away from the material receiving cylinder, of the material discharging pipe, a plurality of inserting columns are integrally arranged on one side, close to the material discharging pipe, of the sealing ring, and inserting holes which are used for inserting and installing the inserting columns and correspond to the inserting columns are formed in the material discharging pipe.

In summary, the invention includes at least one of the following beneficial technical effects:

1. carry out the in-process that mixes at actual clinker powder and gesso, accessible feed arrangement makes clinker and gesso carry out preliminary mixing through the air-blower in the mixture pipe, mutually supporting of rethread one-level compounding device and second grade compounding device, carry out abundant mixing to clinker and gesso, and the in-process of whole mixture, because the wind of air-blower makes the powder granule all can be in showy independent particulate state, can guarantee to improve at the in-process of mixing and mix the effect, improve mixing efficiency, and also can guarantee under the condition that a large amount of raw materials mix that the mixture is more abundant, improve the quality after the cement mixes.

2. The driving device drives the inclined air deflector to swing in the process of conveying the clinker powder and the gypsum powder into the mixing pipe through the air guide pipe, so that the clinker and the gypsum powder are fully mixed along with the swing of the inclined air deflector, and the mixing effect of the clinker and the gypsum powder is further improved.

3. The setting of beating the material blade, when the wind of air-blower was when on the slope beater plate, can blow and beat the material blade and take place to rotate, beat the material blade and take place the pivoted in-process, the air current through on the slope aviation baffle is disturbed to order about more abundant mixture of powder, further improved the mixed effect of raw materials.

Drawings

Fig. 1 is a schematic view of the main structure of the present invention.

Fig. 2 is a schematic view of the structure of the feeding device.

Fig. 3 is a schematic structural view of the driving device.

Fig. 4 is a schematic structural diagram of a primary mixing device.

Fig. 5 is a schematic structural view of a secondary mixing device.

Fig. 6 is a schematic structural view of the discharging device.

Fig. 7 is an enlarged schematic view of region a in fig. 6.

In the figure, 1, a mixing barrel; 2. a feeding device; 3. a first-stage mixing device; 4. a second-stage mixing device; 21. a feed pipe; 22. an air inlet pipe; 23. an air guide pipe; 24. a mixing pipe; 25. a blower; 26. a connecting rod; 27. a connecting frame; 28. an inclined air deflector; 31. a drive motor; 32. a fixing plate; 33. a drive cylinder; 34. sleeving a cylinder; 35. feeding a stirring disc; 36. a stirring disc is arranged; 5. a blanking port; 41. a material beating roller; 42. a rotating electric machine; 43. rotating the block; 44. a mixing rod; 45. a material receiving barrel; 411. mounting grooves; 6. a drive device; 61. a driving cylinder; 62. a drive rack; 63. a connecting strip; 64. connecting grooves; 281. beating blades; 7. a filter cover; 451. a discharge port; 8. a discharging device; 81. a discharge pipe; 82. a material receiving pipe; 83. a sector seal block; 84. driving a pressure spring; 821. a connecting hook; 811. a clamping hole; 812. a discharge hole; 813. plugging the material hole; 822. pulling the ring; 9. a seal ring; 91. inserting the column; 92. and (7) inserting holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-3, a mixing system for preparing portland cement disclosed in the present invention includes a mixing barrel 1, in this embodiment, the mixing barrel 1 is a metal hollow cylindrical structure; the upper end of the mixing cylinder 1 is provided with at least one group of feeding devices 2; a first-stage mixing device 3 and a second-stage mixing device 4 for mixing the fed materials are also arranged in the mixing cylinder 1; in the actual process of mixing the cement clinker powder and the gypsum powder, the clinker and the gypsum powder can be preliminarily mixed in a mixing pipe 24 through a blower 25 by a feeding device 2, and then the clinker and the gypsum powder are fully mixed by the mutual matching of a first-stage mixing device 3 and a second-stage mixing device 4; and whole mixed in-process, because the wind of air-blower 25 makes the powder granule all can be in the solitary granule state of floating, can guarantee to improve the mixed effect at the in-process that mixes, improves mixing efficiency, and also can guarantee more abundant of mixing under the condition that a large amount of raw materials mix, improves the quality after the cement mixes.

Referring to fig. 2, the feeding device 2 comprises a feeding pipe 21, an air inlet pipe 22, an air guide pipe 23, a mixing pipe 24, a blower 25, a connecting rod 26, a connecting frame 27 and an inclined air deflector 28; in the embodiment, the air inlet pipe 22 is fixedly installed at the upper end of the mixing barrel 1, the inlet pipe 21 is fixedly installed at the side of the inlet pipe 21 away from the mixing barrel 1 and is communicated with the air inlet pipe 22, the air guide pipe 23 is fixedly installed at one end of the air inlet pipe 22 and inclines towards the inner cavity of the mixing barrel 1, the air guide pipe 23 is communicated with the air inlet pipe 22, the mixing pipe 24 is fixedly installed at one end of the air guide pipe 23 away from the inlet pipe and extends towards the inner cavity of the mixing barrel 1, the air guide pipe 23 is provided with two air guide pipes and is located at the left side and the right side of the mixing pipe 24, and similarly, the two air inlet; the air blower 25 is arranged at one end of the air inlet pipe 22 far away from the air guide pipe 23 and blows air into the air inlet pipe 22, and the feeding pipe 21 is positioned between the air blower 25 and the air guide pipe 23; in the actual use process, the blower 25 at the end of the air inlet pipe 22 is started, clinker and gypsum powder are poured into the mixing pipe 24 through the two feeding pipes 21, and clinker powder and gypsum powder are blown into the mixing pipe 24 through the air guide pipe 23 by the wind power of the blower 25, so that the clinker and gypsum powder are primarily mixed under the action of the wind power. The connecting rod 26 is a rod-shaped structure made of metal, the connecting rod 26 is fixedly arranged at the end part of the mixing pipe 24 and extends into the inner cavity of the mixing cylinder 1, the connecting frame 27 is a new rectangular frame-shaped structure, is fixedly arranged at the end part of the connecting rod 26 and is positioned in the inner cavity of the mixing pipe 24, and the inclined air deflector 28 is provided with a plurality of blocks and is rotatably arranged on the connecting frame 27; in the actual operation process, the flowing direction of the airflow passing through the inclined air deflectors 28 can be changed by changing the inclination angle of the inclined air deflectors 28, and when the wind directions of a plurality of inclined air deflectors 28 are different or the wind directions change periodically, clinker and gypsum powder passing through the inclined air deflectors 28 are impacted mutually, so that the actual mixing effect is further improved.

With continued reference to fig. 2, the mixing cylinder 1 is fixedly provided with a filter cover 7 through which a mixing pipe 24 passes. The filter cover 7 can make air circulate and simultaneously block the cement powder from passing through the filter cover 7, so that the cement powder after being mixed is uniformly concentrated in the mixing barrel 1.

Referring to fig. 3, in order to ensure that the clinker and the gypsum powder are more fully mixed in the actual mixing process, a driving device 6 for driving the inclined air deflector 28 to periodically rotate is arranged in the mixing pipe 24; wherein, drive arrangement 6 is including driving actuating cylinder 61, drive rack 62, connecting strip 63 and spread groove 64, in this embodiment, drive actuating cylinder 61 and be provided with two sets ofly and be located the relative lateral wall of splice frame 27 respectively, and two drive actuating cylinder 61's drive opposite direction, drive actuating rack 62 and be fixed in two output ends that drive actuating cylinder 61 respectively, connecting strip 63 fixed mounting is in slope aviation baffle 28 both ends, spread groove 64 is seted up on splice frame 27 and is supplied connecting strip 63 to wear to establish and slide, connecting strip 63 and the meshing of driving actuating rack 62. In the actual operation process, the connecting bar 63 meshed with the driving rack 62 rotates by periodically extending and retracting the driving cylinder 61, so that the inclined air deflector 28 is driven to swing, the swinging directions of the inclined air deflector 28 on the left side and the inclined air deflector 28 on the right side are opposite, and clinker and gypsum powder on the inclined air deflector 28 are blown out from the inclined air deflector 28 and then mutually intersect and collide, so that the mixing effect is further improved.

As shown in fig. 3, the inclined air deflector 28 is rotatably mounted with a plurality of material beating blades 281, and the material beating blades 281 are fan-shaped. The setting of beating the material blade 281, when the wind of air-blower 25 was gone up through the slope material beating board, can blow beating the material blade 281 and take place to rotate, beating the material blade 281 and take place the pivoted in-process, the air current through on the slope aviation baffle 28 is disturbed to order about the more abundant mixture of powder, further improved the mixed effect of raw materials.

Referring to fig. 4, the first-stage mixing device 3 includes a driving motor 31, a fixing plate 32, a driving cylinder 33, a sleeving cylinder 34, an upper stirring disc 35 and a lower stirring disc 36; in the embodiment, the driving motor 31 is fixedly installed on the ground of the operation workshop, the fixing plate 32 is fixedly installed on the driving motor 31, the driving cylinder 33 is fixedly installed with the output shaft of the driving motor 31 and penetrates through the fixing plate 32 to extend towards the interior of the mixing cylinder 1; the sleeving cylinder 34 is rotatably arranged on the fixing plate 32 and sleeved on the driving cylinder 33, and the outer side wall of the driving cylinder 33 is meshed with the inner side wall of the sleeving cylinder 34; when the driving motor 31 drives the driving cylinder 33 to rotate, the driving cylinder 33 drives the sleeve cylinder 34 to rotate together, and the sleeve cylinder 34 and the driving cylinder 33 rotate relatively due to the fact that the inner diameter of the sleeve cylinder 34 is different from the outer diameter of the driving cylinder 33 in circumference. The upper stirring disc 35 is fixedly arranged at one end of the driving cylinder 33 far away from the driving motor 31, the lower stirring disc 36 is fixedly arranged on the outer side wall of the sleeving cylinder 34, the upper stirring disc 35 is positioned above the lower stirring disc 36, and blanking ports 5 are respectively arranged on the upper stirring disc 35 and the lower stirring disc 36; when the driving motor 31 drives the driving cylinder 33 and the sleeve setting cylinder 34 to rotate relatively, the upper stirring disc 35 and the lower stirring disc 36 can also follow the driving cylinder 33 and the sleeve setting cylinder 34 to rotate relatively, and when the upper stirring disc 35 and the lower stirring disc 36 rotate relatively, clinker and gypsum powder falling from the mixing pipe 24 can be continuously stirred and mixed, so that the mixing effect is further improved.

Referring to fig. 5, the secondary mixing device 4 includes a material-mixing roller 41, a rotating motor 42, a rotating block 43, a material-mixing rod 44 and a material-receiving cylinder 45, the material-receiving cylinder 45 is fixedly installed at the lower end of the material-mixing cylinder 1 and is used for the sleeve-setting cylinder 34 to slide and penetrate, and the raw materials mixed by the primary mixing device 3 are received by the material-receiving cylinder; the material beating roller 41 is fixedly arranged on one side, away from the upper stirring disc 35, of the lower stirring disc 36 and extends towards the bottom of the material receiving cylinder 45, and in the process of operation of the lower stirring disc 36, the material beating roller 41 can be driven to operate together, so that cement powder falling into the material receiving cylinder 45 is stirred again. The rotating motor 42 is fixedly arranged on the beating roller 41, an installation groove 411 for installing the rotating motor 42 is formed in the beating roller 41, the rotating block 43 is fixedly arranged on an output shaft of the rotating motor 42 to rotate under the control of the rotating motor 42, and the material mixing rod 44 is fixedly arranged on one side, far away from the rotating motor 42, of the rotating block 43; when the knockout roller 41 rotates, the rotating motor 42 drives the rotating block 43 and the mixing rod 44 to rotate, so as to further stir the cement powder, and the cement powder after stirring can be further dispersed, so as to achieve the effect of sufficient mixing.

Referring to fig. 6, in order to collect the mixed cement powder more conveniently, a discharge hole 451 is formed at the bottom of the material receiving cylinder 45, and the cement powder after being fully stirred flows out from the discharge hole 451 to facilitate collection; in addition, a discharging device 8 is arranged at the bottom of the material receiving barrel 45 close to the discharging port 451, and the discharging device 8 comprises a discharging pipe 81, a material receiving pipe 82, a fan-shaped sealing block 83 and a driving pressure spring 84; in this embodiment, discharging pipe 81 fixed mounting is in connecing feed cylinder 45 bottom and communicate each other with discharge gate 451, the cement raw materials can fall through discharging pipe 81, connect the pipe 82 to slide the cover and locate on discharging pipe 81, fan-shaped seal piece 83 circumferential direction is installed on connecing the inside wall of pipe 82, and a plurality of fan-shaped seal pieces 83 mutually support and block in order to connect the pipe 82 inner chamber, drive pressure spring 84 one end fixed mounting is on connecing the inside wall of pipe 82, the drive pressure spring 84 other end is sealed in order to order about fan-shaped seal piece 83 conflict each other with fan-shaped seal piece 83 bottom fixed connection. In the actual operation process, the material receiving pipe 82 is pushed towards the material discharging pipe 81, so that the material discharging pipe 81 is abutted against the fan-shaped sealing blocks 83 in the material receiving pipe 82, the fan-shaped sealing blocks 83 are separated from each other, and cement powder falls from gaps of the fan-shaped sealing blocks 83; on the contrary, when the cement powder does not need to be taken out, the material receiving pipe 82 only needs to be pulled downwards, so that the fan-shaped sealing blocks 83 are squeezed into each other through the pressure of the driving pressure spring 84, and the cement powder is not easy to fall.

Continuing to refer to fig. 6, in order to control the abutting sealing and separation of the sector sealing block 83, a plurality of connecting hooks 821 which are slidably abutted against the outer side wall of the discharge pipe 81 are integrally arranged at one end of the material receiving pipe 82 close to the discharge pipe 81, a clamping hole 811 for inserting and clamping the connecting hooks 821 is formed in the discharge pipe 81, the clamping hole 811 comprises a discharge hole 812 and a material blocking hole 813, and the discharge hole 812 is positioned above the material blocking hole 813; when the cement powder in the material receiving cylinder 45 needs to be collected, the connecting hook 821 is only required to be clamped with the discharge hole 812, and when the cement powder does not need to be collected, the connecting hook 821 is only required to be clamped with the material blocking hole 813. In addition, a pulling ring 822 is integrally provided on a side wall of the coupling hook 821. In the actual operation process, the connecting hook 821 can be pulled more conveniently and rapidly by the pulling ring 822, so that the actual operation is facilitated.

Referring to fig. 7, in order to ensure the sealing performance of the device, a sealing ring 9 sliding against the inner side wall of the material receiving pipe 82 is disposed at the end of the material discharging pipe 81 far away from the material receiving cylinder 45, a plurality of inserting columns 91 are integrally disposed at one side of the sealing ring 9 close to the material discharging pipe 81, and inserting holes 92 for the inserting columns 91 to be inserted and installed and corresponding to the inserting columns 91 are disposed on the material discharging pipe 81. When the sealing ring 9 is mounted on the discharge pipe 81, the plug post 91 is simply inserted into the plug hole 92.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a hybrid system for portland cement preparation, includes mixing barrel (1), its characterized in that: the upper end of the mixing cylinder (1) is provided with at least one group of feeding devices (2), and a first-stage mixing device (3) and a second-stage mixing device (4) for mixing feeding materials are also arranged in the mixing cylinder (1);

the feeding device (2) comprises a feeding pipe (21), an air inlet pipe (22), an air guide pipe (23), a mixing pipe (24), an air blower (25), a connecting rod (26), a connecting frame (27) and an inclined air guide plate (28), wherein the air inlet pipe (22) is fixedly arranged at the upper end of the mixing barrel (1), the feeding pipe (21) is fixedly arranged at one side of the feeding pipe (21) far away from the mixing barrel (1) and is communicated with the air inlet pipe (22), the air guide pipe (23) is fixedly arranged at one end of the air inlet pipe (22) and inclines towards the inner cavity of the mixing barrel (1), the air guide pipe (23) is communicated with the air inlet pipe (22), the mixing pipe (24) is fixedly arranged at one end of the air guide pipe (23) far away from the advancing pipe and extends towards the inner cavity of the mixing barrel (1), the air blower (25) is arranged at one end of the air inlet pipe (22) far away from the air guide pipe (23) and, the feeding pipe (21) is positioned between the air blower (25) and the air guide pipe (23), the connecting rod (26) is fixedly arranged at the end part of the mixing pipe (24) and extends into the inner cavity of the mixing cylinder (1), the connecting frame (27) is fixedly arranged at the end part of the connecting rod (26) and is positioned in the inner cavity of the mixing pipe (24), and the inclined air guide plate (28) is provided with a plurality of blocks and is rotatably arranged on the connecting frame (27);

the one-level mixing device (3) comprises a driving motor (31), a fixing plate (32), a driving cylinder (33), a sleeve setting cylinder (34), an upper mixing disc (35) and a lower mixing disc (36), wherein the driving motor (31) is arranged on the ground of an operation workshop, the fixing plate (32) is fixedly arranged on the driving motor (31), the driving cylinder (33) is fixedly arranged with an output shaft of the driving motor (31) and penetrates through the fixing plate (32) to extend into the mixing cylinder (1), the sleeve setting cylinder (34) is rotatably arranged on the fixing plate (32) and sleeved on the driving cylinder (33), the outer side wall of the driving cylinder (33) is meshed with the inner side wall of the sleeve setting cylinder (34), the upper mixing disc (35) is fixedly arranged at one end of the driving cylinder (33) far away from the driving motor (31), the lower mixing disc (36) is fixedly arranged on the outer side wall of the sleeve setting cylinder (34), the upper stirring disc (35) is positioned above the lower stirring disc (36), and the upper stirring disc (35) and the lower stirring disc (36) are both provided with blanking ports (5);

the two-stage mixing device (4) comprises a mixing roller (41), a rotating motor (42), a rotating block (43), a mixing rod (44) and a material receiving barrel (45), wherein the material receiving barrel (45) is fixedly installed at the lower end of the mixing barrel (1) and is used for a sleeve forming barrel (34) to slide and penetrate, the mixing roller (41) is fixedly installed at one side, away from the upper mixing disk, of the lower mixing disk and extends towards the bottom of the material receiving barrel (45), the rotating motor (42) is fixedly installed on the mixing roller (41), an installation groove (411) for the rotating motor (42) to be installed is formed in the mixing roller (41), the rotating block (43) is fixedly installed on an output shaft of the rotating motor (42) to rotate under the control of the rotating motor (42), and the mixing rod (44) is fixedly installed at one side, away from the rotating motor (42), of the rotating block (43);

the device is characterized in that a driving device (6) for driving the inclined air deflector (28) to rotate periodically is arranged in the mixing pipe (24), the driving device (6) comprises a driving cylinder (61), a driving rack (62), a connecting strip (63) and connecting grooves (64), the driving cylinder (61) is provided with two groups of driving cylinders (61) which are respectively located on the outer side walls opposite to the connecting frame (27), the driving directions of the driving cylinders (61) are opposite, the driving rack (62) is respectively fixed at the output ends of the two driving cylinders (61), the connecting strip (63) is fixedly installed at two ends of the inclined air deflector (28), the connecting grooves (64) are arranged on the connecting frame (27) and allow the connecting strip (63) to slide in a penetrating manner, and the connecting strip (63) and the driving rack (62) are meshed to be driven by the driving rack (62) to rotate.

2. The mixing system for portland cement preparation according to claim 1, wherein: and a plurality of material beating blades (281) are rotatably arranged on the inclined air deflector (28).

3. The mixing system for portland cement preparation according to claim 1, wherein: and a filter cover (7) for the material mixing pipe (24) to penetrate is fixedly arranged on the material mixing cylinder (1).

4. The mixing system for portland cement preparation according to claim 1, wherein: a discharge hole (451) is arranged at the bottom of the material receiving barrel (45), a discharge device (8) is arranged at the position, close to the discharge hole (451), at the bottom of the material receiving barrel (45), the discharging device (8) comprises a discharging pipe (81), a receiving pipe (82), a fan-shaped sealing block (83) and a driving pressure spring (84), the discharge pipe (81) is fixedly arranged at the bottom of the material receiving barrel (45) and is communicated with the discharge hole (451), the material receiving pipe (82) is sleeved on the material discharging pipe (81) in a sliding manner, the fan-shaped sealing block (83) is circumferentially and rotatably arranged on the inner side wall of the material receiving pipe (82), and a plurality of fan-shaped sealing blocks (83) are mutually matched to seal the inner cavity of the material receiving pipe (82), one end of the driving pressure spring (84) is fixedly arranged on the inner side wall of the material receiving pipe (82), the other end of the driving pressure spring (84) is fixedly connected with the bottom of the fan-shaped sealing block (83) to drive the fan-shaped sealing block (83) to be mutually abutted and sealed.

5. The mixing system for portland cement preparation according to claim 4, wherein: one end, close to the discharge pipe (81), of the material receiving pipe (82) is integrally provided with a plurality of connecting hooks (821) which are in sliding contact with the outer side wall of the discharge pipe (81), the discharge pipe (81) is provided with a clamping hole (811) for the connecting hooks (821) to be inserted and clamped, the clamping hole (811) comprises a discharge hole (812) and a material blocking hole (813), and the discharge hole (812) is located above the material blocking hole (813); the side wall of the connecting hook (821) is integrally provided with a pulling ring (822).

6. The mixing system for portland cement preparation according to claim 4, wherein: the end part of the discharging pipe (81) far away from the material receiving barrel (45) is provided with a sealing ring (9) which slides and is abutted against the inner side wall of the material receiving pipe (82), one side of the sealing ring (9) close to the discharging pipe (81) is integrally provided with a plurality of inserting columns (91), and the discharging pipe (81) is provided with inserting holes (92) for the inserting columns (91) to be inserted and installed and corresponding to the inserting columns (91).