CN113477382B

CN113477382B - Cement raw meal grinding system of roller press

Info

Publication number: CN113477382B
Application number: CN202110784643.XA
Authority: CN
Inventors: 乔贤君; 于俊杰; 韩伟; 何华斌; 罗育春; 陶明亮
Original assignee: Jidong Cement Bishan Co ltd
Current assignee: Jidong Cement Bishan Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2022-07-12
Anticipated expiration: 2041-07-12
Also published as: CN113477382A

Abstract

The invention relates to the field of cement production, and particularly discloses a cement raw material grinding system of a roller press, which comprises the roller press, a powder concentrator and a dust collector, wherein the powder concentrator comprises a powder concentrator body and a feeding flattening device arranged at a feeding port of the powder concentrator, the feeding flattening device comprises a flattening shell, the flattening shell sequentially comprises a cylindrical section, a transition section and a rectangular section from top to bottom, the top of the cylindrical section is a feeding port, the bottom of the rectangular section is a discharging port, a rotary table is arranged in the cylindrical section, and an annular discharging port is formed between the periphery of the rotary table and the inner wall of the flattening shell; be provided with a plurality of scattering body of rod along carousel axial extension in the carousel, still be equipped with in the carousel and supply to scatter the gliding slip passageway of the body of rod, scatter the body of rod top and stretch out the carousel upper surface, and still be equipped with in the carousel and be used for the drive to scatter the body of rod along carousel axial reciprocating motion's scattering driving piece. The material can form a perfect material curtain to enter the powder selecting machine and is completely spread in a feeding channel of the powder selecting machine.

Description

Cement raw meal grinding system of roller press

Technical Field

The invention belongs to the technical field of cement production, and particularly relates to a cement raw material grinding system of a roller press.

Background

The cement raw meal grinding is an important process for cement production, and the main function of the cement raw meal grinding is to provide powdery raw meal with excellent performance for clinker calcination. The grinding principle of the material is that under the action of external force, the cohesion between each mass point in the material crystal and the crystal is overcome through impact, extrusion and grinding, so that the large material is changed into small blocks or even fine powder.

The grinding system of the roller press is divided into the following types according to the functions of the roller press in the whole grinding system: the pre-grinding system, the mixed grinding system, part of the final grinding system, the combined grinding system, the final grinding system and the like.

At present, a roller press grinding system generally adopts the following processes in cement raw meal grinding:

1. an open flow grinding system consisting of a roller press, a V-shaped powder concentrator or a dynamic V-shaped powder concentrator and a dust collector;

2. the open flow grinding system consists of a roller press, a V-shaped powder concentrator, a high-efficiency powder concentrator and a dust collector.

The V-shaped powder concentrator is a static grading and scattering device specially used for a roller press, and is provided with a left inlet and a right outlet, so that cake forming materials coming out of the roller press are scattered, qualified fine powder in the scattered materials is separated, smooth operation of the roller press is facilitated, the system yield is improved, and the V-shaped powder concentrator has a drying function. Simple structure, wear-resisting part long service life. The air volume is small, the pressure difference loss is small, and the fineness of the finished product can be controlled by adjusting the air speed.

The feeding channel of the existing V-shaped powder concentrator is a single channel, and the single channel feeding has the following defects: the materials crushed by extrusion in the roller press form certain cakes due to the influence of pressure and moisture, so the materials circulate in the form of cakes formed by rolling, the materials cannot be uniformly distributed after entering the interior of the V-shaped powder concentrator, the flow direction of the materials is too concentrated, the materials cannot be completely spread in the interior of the V-shaped powder concentrator, partial fine materials cannot be selected, the fine materials which are not selected need to be selected, and the problem of low powder concentration efficiency is caused.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to solve traditional selection powder machine material and can not be all spread in the inside of selection powder machine, the flow direction of material is too concentrated problem.

In order to solve the technical problems, the invention adopts the following technical scheme:

the cement raw material grinding system comprises a roller press, a powder concentrator and a dust collector, wherein the powder concentrator comprises a powder concentrator body and a feeding flattening device arranged at a feeding port of the powder concentrator, the feeding flattening device comprises a flattening shell, the flattening shell sequentially comprises a cylindrical section, a transition section and a rectangular section from top to bottom, the top of the cylindrical section is provided with a feeding port, the bottom of the rectangular section is provided with a discharging port, a rotary table is arranged in the cylindrical section, and an annular discharging port is formed between the periphery of the rotary table and the inner wall of the flattening shell;

the turntable is provided with a plurality of scattering rod bodies arranged along the axial direction of the turntable and sliding channels arranged in one-to-one correspondence with the scattering rod bodies, and the scattering rod bodies are provided with scattering driving pieces for driving the scattering rod bodies to reciprocate along the sliding channels and make the scattering rod bodies protrude to the upper part of the turntable or withdraw into the turntable.

Further, the cylinder section internal fixation of shakeout casing has the mounting bracket, the carousel rotates to be connected at the middle part of mounting bracket, and still is equipped with the motor that is used for driving the carousel rotatory on the mounting bracket.

Further, the mounting bracket is including being located the circular sleeve of shakeout casing center and a plurality of fixed body of rod of evenly distributed in circular sleeve circumference, fixed body of rod one end is fixed in on the circular sleeve, on the other end is fixed in the inner wall of shakeout casing, the quantity of fixed body of rod is two ~ four.

Furthermore, the scattering rod bodies on the rotary table are divided into a plurality of groups, and the plurality of groups of scattering rod bodies are radially distributed along the center of the rotary table.

Further, break up the driving piece including being fixed in the cylinder cam on the mounting bracket, the top of cylinder cam is equipped with a curve profile recess, and the equal fixedly connected with vertical actuating lever of the body of rod is broken up to every group, actuating lever bottom butt is in curve profile recess.

Furthermore, a sealing ring is embedded between the sliding channel on the turntable and the scattering rod body.

Further, the bottom of the driving rod is provided with a roller.

Furthermore, a dredging mechanism for dredging the blanking port is further arranged in the flattening shell.

Further, dredge the mechanism including being fixed in a plurality of blowing nozzle on the shakeout shells inner wall, the air current direction of blowing nozzle is towards the blanking mouth.

Furthermore, the top of the scattering rod body is in a tip shape.

The principle and the beneficial effects of the invention are as follows:

the material cake gets into in the shakeout casing from the pan feeding mouth at shakeout casing top, the striking is on the carousel in the shakeout casing, the realization is broken up the preliminary of bold material cake, and break up body of rod intermittent type nature upwards top through each on the carousel, break up the cake form material once more, the material falls on the carousel back, rotation through the carousel, the material receives centrifugal force and removes to the carousel border on the carousel, the blanking mouth at carousel border is fallen into gradually to the material on the carousel, fall down from the blanking mouth, and the material is at the in-process that removes to the blanking mouth, the material still can receive the horizontal striking of the body of rod of breaing up, further broken material. Because the carousel keeps the rotation state, when the material fell from the carousel border, can form annular material curtain, this annular material curtain diameter is the same with the length of selection powder machine feed inlet, in the material curtain gets into the rectangle section after the changeover portion of flattening the casing again, because the effect of changeover portion, the material can form perfect material curtain and get into the selection powder machine, all spread out at the pan feeding passageway of selection powder machine, it is too concentrated to have solved the flow direction of traditional selection powder machine material, the problem that the material can not be all spread out in the inside of selection powder machine.

Drawings

Fig. 1 is a schematic external structural diagram according to a first embodiment of the present invention.

Fig. 2 is an internal structural view of fig. 1.

Fig. 3 is a top view of the turntable of fig. 2.

Fig. 4 is a top view of a turntable according to a second embodiment of the present invention.

Fig. 5 is a schematic structural view of the mounting bracket in fig. 2.

Fig. 6 is a schematic structural view of the cylindrical cam in fig. 2.

Wherein the reference numerals include:

the feeding device comprises a feeding port 101, a discharging port 102, a cylindrical section 1, a transition section 2, a rectangular section 3, a rotating shaft 4, a rotary disc 5, a scattering rod body 6, a driving rod 7, a reducing section 8, a blowing nozzle 9, a blanking port 10, a motor mounting seat 11, a motor 12, a cylindrical cam 13, a curve outline groove 14, a mounting frame 15, a fixing rod body 151 and a circular sleeve 152.

Detailed Description

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

Example one

In the specific implementation:

roll squeezer cement raw meal grinding system, including roll squeezer, selection powder machine and dust collector, selection powder machine includes the selection powder organism and sets up in the feeding shakeout device of selection powder machine feed inlet, and the structure of feeding shakeout device is as shown in figure 1, including shakeout casing, shakeout casing from the top down includes cylinder section 1, changeover portion 2 and rectangle section 3 in proper order, and cylinder section 1 top has pan feeding mouth 101, and rectangle section 3 bottom has discharge gate 102. When the method is implemented, the rectangular section 3 is connected with a feeding hole of the powder concentrator, and after materials are pretreated by the feeding flattening device, the materials enter the powder concentrator again.

The inner structure of the feeding flattening device is as shown in fig. 2, a rotary table 5 is arranged in a cylindrical section 1, a reducing section 8 is arranged at the upper part in the cylindrical section 1, and an annular blanking port 10 is formed between the periphery of the top of the rotary table 5 and the inner periphery of the bottom of the reducing section 8. The turntable 5 below is provided with the mounting bracket 15, and the structure of mounting bracket 15 is as shown in fig. 5, including being located the circular sleeve 152 of shakeout casing center and evenly distributed in the fixed body of rod 151 of a plurality of circular sleeve 152 circumference, on fixed body of rod 151 one end was fixed in circular sleeve 152, the other end was fixed in the inner wall of shakeout casing, and the quantity of the fixed body of rod 151 was two ~ four, and four are selected to the quantity of the fixed body of rod 151 in this embodiment.

The center of the bottom of the rotating disc 5 is fixedly connected with a rotating shaft 4, and the rotating shaft 4 is rotatably connected in the circular sleeve 152. The bottom of the mounting frame 15 is also fixed with a motor mounting seat 11, a motor 12 is installed in the motor mounting seat 11, an output shaft of the motor 12 is fixedly connected with the bottom of the rotating shaft 4, the rotating shaft 4 is driven to rotate through the motor 12, and therefore the rotating disc 5 is driven to rotate.

5 inside cavities of carousel are provided with a plurality of scattering body of rod 6 along 5 axial extensions of carousel in the carousel 5, and the body of rod 6 gliding slide channel of supplying to scatter is still seted up at 5 tops of carousel, scatters 6 sliding connection of the body of rod in slide channel, and scatters 6 tops of the body of rod and stretch out 5 upper surfaces of carousel, scatters 6 tops of the body of rod and is most advanced form. As shown in fig. 3, the scattering rod bodies 6 on the turntable 5 are divided into a plurality of groups, the groups of scattering rod bodies 6 are radially distributed along the center of the turntable 5, and each scattering rod body 6 in each group is radially distributed along the turntable 5. Every group breaks up body of rod 6 and all is fixed with vertical actuating

lever

7, and 5 bottoms of carousel are seted up and are supplied the gliding slide opening of actuating lever 7, and actuating lever 7 sliding connection is in slide opening, and stretches out 5 bottoms of carousel 7 bottoms of actuating lever.

The top of the mounting frame 15 is fixedly installed with a cylindrical cam 13, and as shown in fig. 2 and 6, the cylindrical cam 13 is in the shape of a shell with an open top, and the circular sleeve 152 is located inside the cylindrical cam 13. The top of the cylindrical cam 13 is provided with a curved profile groove 14, and the bottoms of the driving rods 7 are abutted against the curved profile groove 14.

Still be equipped with the dredge mechanism that is used for dredging blanking mouth 10 in the shakeout casing, the dredge mechanism is including being fixed in a plurality of blowing nozzle 9 on the shakeout casing inner wall, and blowing nozzle 9's air current direction is towards blanking mouth 10, the external fan of blowing nozzle 9.

The specific implementation process of this embodiment is as follows:

the material cake gets into in the shakeout casing from the pan feeding mouth 101 at shakeout casing top, the striking is on shakeout casing carousel 5, the realization is to the preliminary break up of bold material cake, it is rotatory to drive carousel 5 through

motor

12, 5 rotatory in-process of carousel, walk in curve profile recess 14 of 7 bottoms on the cylindrical cam 13 of carousel 5 below of each actuating lever in the carousel 5, each actuating lever 7 rises repeatedly and descends, actuating lever 7 drives each group and breaks up body of rod 6 intermittent type nature lift, break up body of rod 6 intermittent type nature upwards ejecting through each on the carousel 5, carry out the breakage once more with the pie material on the carousel 5 and break up. After the material fell on carousel 5, through the rotation of carousel 5, the material received centrifugal force and moved to carousel 5 border on carousel 5, and the material on carousel 5 falls into the blanking mouth 10 at carousel 5 border gradually, falls down from blanking mouth 10 to the material still can receive the horizontal striking of the body of rod 6 of breaing up to the in-process that blanking mouth 10 removed on carousel 5, further broken conglomeration material. Because carousel 5 keeps the rotation state, when the material fell from 5 borders of carousel, can form annular material curtain, this annular material curtain diameter is the same with the length of selection powder machine feed inlet, the material curtain gets into in rectangular section 3 after the changeover portion 2 of flattening the casing again, because the effect of changeover portion 2, the material can form perfect material curtain gets into in the selection powder machine, all spread out at the pan feeding passageway of selection powder machine, it is too concentrated to have solved the flow direction of traditional selection powder machine material, the problem that the material can not be all spread out in the inside of selection powder machine.

In the material after 6 broken through each scattering body of rod, still can have a small part not by broken conglomeration material, because the part is not because the volume is great by broken conglomeration material, can block in annular blanking mouth 10 department, plug up blanking mouth 10, influence the unloading.

Set up the mediation mechanism in this embodiment and dredge the bold conglomeration material of card in blanking mouth 10 department, avoid the conglomeration material card to plug up blanking mouth 10 in blanking mouth 10 department and influence the unloading.

The dredging mechanism is a plurality of air blowing nozzles 9 arranged in this embodiment, the number of the air blowing nozzles 9 is two in this embodiment, and the two air blowing nozzles 9 are symmetrically arranged on the inner wall of the cylindrical section 1. Through blowing to blanking mouth 10 department, can dredge the caking material of card in blanking mouth 10 department on the one hand, on the other hand can also blow the caking material to the center of carousel 5, breaks up the body of rod 6 and breaks up the caking material again through each on the carousel 5.

Example two

The difference between this embodiment and the first embodiment is: as shown in fig. 4, each scattering rod 6 of each set of scattering rods 6 in the present embodiment forms an arc shape.

EXAMPLE III

The difference between this embodiment and the first embodiment is: in this embodiment, a sealing ring is embedded between the sliding channel of the turntable 5 and the scattering rod body 6. The sealing washer can play the effect that prevents the powder and fall into the slip passageway and break up the gap between the body of rod 6, avoids the powder to block up the slip passageway and breaks up the gap between the body of rod 6.

Example four

The difference between this embodiment and the first embodiment is: in this embodiment, the bottom of the driving rod 7 is provided with a roller. The roller at the bottom of the driving rod 7 rolls in the curved profile groove 14, so that sliding friction can be reduced, and the driving rod 7 can slide more smoothly.

The above is only a preferred embodiment of the present invention, and it should be noted that several modifications and improvements made by those skilled in the art without departing from the technical solution should also be considered as falling within the scope of the claims.

Claims

1. The cement raw material grinding system comprises a roller press, a powder concentrator and a dust collector, and is characterized in that the powder concentrator comprises a powder concentrator body and a feeding flattening device arranged at a feeding port of the powder concentrator, the feeding flattening device comprises a flattening shell, the flattening shell sequentially comprises a cylindrical section, a transition section and a rectangular section from top to bottom, the top of the cylindrical section is provided with a feeding port, the bottom of the rectangular section is provided with a discharging port, a rotary table is arranged in the cylindrical section, and an annular discharging port is formed between the periphery of the rotary table and the inner wall of the flattening shell;

the rotary table is provided with a plurality of scattering rod bodies arranged along the axial direction of the rotary table and sliding channels arranged in one-to-one correspondence to the scattering rod bodies, and the scattering rod bodies are provided with scattering driving pieces for driving the scattering rods to reciprocate along the sliding channels and protrude above the rotary table or retract into the rotary table;

the scattering rod bodies on the turntable are divided into a plurality of groups, and the plurality of groups of scattering rod bodies are distributed radially along the center of the turntable;

break up the driving piece including being fixed in the cylinder cam on the mounting bracket, the top of cylinder cam is equipped with a curve profile recess, and the equal fixedly connected with vertical actuating lever of the body of rod is broken up to every group, actuating lever bottom butt is in curve profile recess.

2. The cement raw meal grinding system of the roller press as recited in claim 1, wherein a mounting frame is fixed in the cylindrical section of the flattening housing, the rotary table is rotatably connected to a middle portion of the mounting frame, and a motor for driving the rotary table to rotate is further provided on the mounting frame.

3. The cement raw meal grinding system of the roller press as recited in claim 2, wherein the mounting frame includes a circular sleeve located at the center of the flattening housing and a plurality of fixing rods uniformly distributed on the circumference of the circular sleeve, one end of the fixing rod is fixed to the circular sleeve, the other end of the fixing rod is fixed to the inner wall of the flattening housing, and the number of the fixing rods is two to four.

4. The cement raw meal grinding system of the roller press as recited in claim 1, wherein a sealing ring is inserted between the sliding channel of the rotary table and the scattering rod body.

5. The roller press cement raw meal grinding system according to claim 1, wherein rollers are provided at a bottom of the driving rod.

6. The roller press cement raw meal grinding system according to claim 1, wherein a dredging mechanism for dredging a blanking port is further provided in the flattening housing.

7. The roller press cement raw meal grinding system according to claim 6, wherein the dredging mechanism comprises a plurality of blowing nozzles fixed on the inner wall of the flattening shell, and the air flow direction of the blowing nozzles faces the blanking port.

8. The roller press cement raw meal grinding system according to any one of claims 1 to 7, wherein the top of the breaking rod body is pointed.