CN115318393A

CN115318393A - Finished cement clinker ball mill

Info

Publication number: CN115318393A
Application number: CN202211028453.6A
Authority: CN
Inventors: 董树良; 姚其根; 张建忠; 付华根
Original assignee: Pinghu South Cement Co ltd
Current assignee: Pinghu South Cement Co ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-11-11
Anticipated expiration: 2042-08-25
Also published as: CN115318393B

Abstract

The invention relates to the technical field of cement production equipment and discloses a finished cement clinker ball mill which comprises a cylinder body, wherein a stepped lining plate is fixedly installed inside the cylinder body through screws, an outer protective housing is arranged on the outer surface of one end, close to a feeding hole, of the cylinder body, the outer protective housing is not in direct contact with the cylinder body, and the outer protective housing is positioned on one side, away from the feeding hole, of a sliding shoe housing. According to the invention, the external magnetic field is arranged outside the cylinder body and is separated from the central axis of the cylinder body, so that the directions of the magnetic fields on the two sides of the central axis are opposite, therefore, more grinding balls can rise and fall off due to the action of friction force and magnetic attraction in the rising process of the grinding balls with single magnetism, and when the grinding balls reach a high position, the grinding balls can fall down due to the action of gravity and magnetic field replacement, and at the moment, materials and the grinding balls are impacted when the grinding balls fall down due to the action of magnetic repulsion, so that the grinding efficiency is improved.

Description

Finished cement clinker ball mill

Technical Field

The invention relates to the technical field of cement production equipment, in particular to a finished cement clinker ball mill.

Background

Finished cement clinker is in the in-process of production, need grind the powder through the cement ball mill, current ball mill includes feed arrangement, a support device, slewer, discharge apparatus, transmission and the lubricated cooling device on the installation support device, wherein slewer includes barrel and the inside activation ring subassembly of installation barrel, combination formula screening compartment, wear-resisting ladder welt and barrel mill door gear, at the grinding chamber to cement raw materials mainly constitute through combination formula screening compartment and wear-resisting ladder welt, grinding ball has been placed in the inside of grinding chamber, when the barrel begins to rotate under transmission's effect, the inside material of grinding chamber and grinding ball rotate together this moment, and because the shape of ladder welt is injectd, can make grinding ball card between the ladder, when the welt rotates to the top from the bottom, because the shape of grinding ball is injectd, after a take the altitude, grinding ball can fall under the effect of gravity, the material in the barrel that falls this moment smashes.

But the grinding ball rotates to the eminence after under the influence that the barrel rotated, relies on automatic gravity to drop downwards, because the effect of grinding mainly depends on the gravity of grinding ball, the grinding efficiency of powder is not high.

Disclosure of Invention

Aiming at the defects of the prior cement ball mill in the use process, the invention provides a finished cement clinker ball mill which has the advantage of improving the grinding efficiency of the ball mill, and solves the problem of low cement grinding efficiency caused by the influence of the gravity of grinding balls in the prior art.

The invention provides the following technical scheme: the utility model provides a finished product cement clinker ball mill, includes the barrel, the barrel is close to both ends outside surface mounting has the crawler shell, wherein one end of barrel is the feed inlet, there is the ladder welt the inside of barrel through screw fixed mounting, the one end surface that the barrel is close to the feed inlet is provided with outer protection housing, direct contact not between outer protection housing and the barrel, outer protection housing is located the crawler shell and keeps away from one side of feed inlet, and fixed connection between outer protection housing and the crawler shell, the top fixed mounting of outer protection housing has the power, install the fixed ring body between the inside wall of outer protection housing and the lateral wall of barrel, fixed ring body and outer protection housing fixed mounting, contactless between the inside wall of fixed ring body and the lateral wall of barrel, be provided with between the lateral wall of outer protection housing inside wall and fixed ring body and receive the line chamber, receive the line chamber and be used for placing the conductor wire, install the coil on the fixed ring body, grinding ball has been placed to the inside of ladder welt.

Preferably, the grinding ball includes the spheroid, the counter weight chamber has been seted up to spheroidal inside, spheroidal inside fixed mounting has hollow magnetic ball, hollow magnetic ball not with counter weight chamber direct contact, the inside in counter weight chamber is provided with counter weight sand, spheroidal material is the heavier and antimagnetic material of quality, hollow magnetic ball is the weak magnetic material of single magnetism, the density of counter weight sand for being easily being magnetized material and counter weight sand is greater than spheroidal density.

Preferably, the coils are uniformly distributed along the axial direction and the circumferential direction of the fixed ring body, the coils are symmetrically distributed along the vertical central axis of the outer protection housing, the magnetic pole distribution mode of the coil on one side of the central axis of the coil is just opposite to that of the other side, the central axis of the coil is collinear with the radius of the outer protection housing, and one side of the coil on the fixed ring body, which generates magnetic attraction force to the grinding ball, and the side of the coil on the fixed ring body, which ascends with the grinding ball inside the stepped lining plate, are located on the same side of the vertical central axis of the outer protection housing.

Preferably, the coils in the axial direction of the fixed ring body are in one group, each group of coils is connected in series along the circumferential direction of the fixed ring body, and the number of the coils in parallel connection in each group is gradually increased by one from the highest point to the lower point along the axial direction when viewed from the rising side of the grinding ball.

The invention has the following beneficial effects:

1. according to the invention, the external magnetic field is arranged outside the cylinder body and is separated from the central axis of the cylinder body, so that the directions of the magnetic fields on the two sides of the central axis are opposite, therefore, more grinding balls can rise and fall off due to the action of friction force and magnetic attraction in the rising process of the grinding balls with single magnetism, and when the grinding balls reach a high position, the grinding balls can fall down due to the action of gravity and magnetic field replacement, and at the moment, the grinding balls can impact materials and the grinding balls when falling due to the action of magnetic repulsion, so that the grinding efficiency is improved.

2. The invention connects the coils on the fixed ring body in a special series-parallel connection mode, and the magnetic field intensity of a single coil is finally determined by the current magnitude of the parallel circuit, so that the current is in a descending state on the ascending side, the number of the coils connected in parallel in a single group is gradually increased from the highest part to the lowest part, the current magnitude is increased, the current on the lowest part is maximized, and the arrangement mode that the magnetic field of the ascending side is gradually increased from the bottom part to the top part and the magnetic field of the descending side is gradually decreased can effectively reduce the upward force generated by the magnetic fields on the two sides on the grinding ball when the grinding ball descends, effectively improve the grinding impact force and improve the grinding effect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is a schematic longitudinal sectional view of the present invention;

FIG. 4 is a schematic view of the present invention in a rotated state;

FIG. 5 is a schematic view of the internal structure of the grinding ball of the present invention:

fig. 6 is a schematic diagram of an example of the circuit of the coil of the present invention.

In the figure: 1. a barrel; 2. a slipper housing; 3. a feed inlet; 4. a stepped liner plate; 5. an outer protective housing; 6. a power source; 7. a stationary ring body; 8. a wire take-up cavity; 9. a coil; 10. grinding balls; 101. a sphere; 102. a hollow magnetic ball; 103. a counterweight chamber; 104. and (4) weighing sand.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a finished cement clinker ball mill comprises a cylinder 1, a sliding shoe housing 2 is installed on the outer surface of the cylinder 1 near two ends, a feed port 3 is arranged at one end of the cylinder 1, the other end of the cylinder 1 is connected with a transmission device, so that the cylinder 1 rotates, a step lining plate 4 is fixedly installed inside the cylinder 1 through screws, an outer protective housing 5 is arranged on the outer surface of one end of the cylinder 1 near the feed port 3, the outer protective housing 5 is not directly contacted with the cylinder 1, the rotation of the cylinder 1 is prevented from driving the outer protective housing 5 to rotate, the outer protective housing 5 is arranged at one side of the sliding shoe housing 2 far away from the feed port 3, the outer protective housing 5 is fixedly connected with the sliding shoe housing 2, no mark is arranged in the figure, a support device is arranged at the bottom of the sliding shoe housing 2 in the prior art, and a lubricating and cooling device is arranged at the position where a bearing sheet of the support device is contacted with the cylinder 1, the slipper housing 2 is not rotated, the outer protective housing 5 connected with the slipper housing 2 is not rotated, because the length of the outer protective housing 5 is too long, the bottom of the outer protective housing 5 can be provided with a supporting bracket or supported by a maintenance platform, in addition, the length of the outer protective housing 5 is equal to the length of a grinding cavity, a power supply 6 is fixedly arranged above the outer protective housing 5, the power supply 6 is only drawn in figure 3, a fixed ring body 7 is arranged between the inner side wall of the outer protective housing 5 and the outer side wall of the barrel body 1, the fixed ring body 7 is fixedly arranged with the outer protective housing 5, the inner side wall of the fixed ring body 7 is not contacted with the outer side wall of the barrel body 1, a wire taking-up cavity 8 is arranged between the inner side wall of the outer protective housing 5 and the outer side wall of the fixed ring body 7, and the wire taking-up cavity 8 is used for placing a conducting wire, install coil 9 on the fixed ring body 7, coil 9 distributes along the axial of fixed ring body 7 and circumference equipartition, and grinding ball 10 has been placed to ladder welt 4 inside, and normal during operation, barrel 1 can begin to rotate under transmission's effect, and the rotation of barrel 1 also can be followed automatically to the inside material of ladder welt 4 and grinding ball this moment and rotate, and grinding ball and pivoted welt can grind the material this moment.

Referring to fig. 5, the grinding ball 10 includes a ball body 101, the ball body 101 is made of a material which can be a wear-resistant material such as a stainless steel alloy, a counterweight cavity 103 is formed inside the ball body 101, a hollow magnetic ball 102 is fixedly mounted inside the ball body 101, the hollow magnetic ball 102 is not in direct contact with the counterweight cavity 103, counterweight sand 104 is arranged inside the counterweight cavity 103, the counterweight sand 104 can be made of an alloy such as iron, cobalt, and nickel, the ball body 101 is made of a material which is heavy in mass and resistant to magnetism, the hollow magnetic ball 102 is a weak magnetic material which is single magnetic, the hollow magnetic ball 102 is made of a ferrite magnet, the magnetic force is weak and fragile, and the weak magnetic material is fragile and is easily damaged, so that the inner and outer side walls of the counterweight cavity 103 are embedded inside the ball body 101, when the fragile counterweight cavity 103 is prevented from being in contact with the counterweight sand 104, the counterweight sand 104 is made of a material which is easily magnetized, and the density of the counterweight sand 104 is greater than that of the ball 101, therefore, the mass of the counterweight sand 104 can effectively supplement the mass of the magnetic ball 102, and the grinding ball 10 after improvement is improved is poor in quality.

Wherein, referring to fig. 3, the coils 9 are symmetrically distributed along the vertical central axis of the outer protective cover 5, the magnetic pole distribution of the coil 9 on one side of the central axis of the coil 9 is exactly opposite to the other side, and the central axis of the coil 9 is collinear with the radius of the outer protective cover 5, the side of the coil 9 on the fixed ring body 7 generating magnetic attraction to the grinding ball 10 is located on the same side of the vertical central axis of the outer protective cover 5 as the side of the stepped lining plate 4 where the grinding ball 10 rises, for example, referring to fig. 4, the current on the coil 9 is from the power supply 6, the coil 9 generates magnetic force, the dotted line part is the magnetic field distribution of the coil 9, the magnetic field direction of the coil on the left side of the central axis is from the outside to the inside, the magnetic field direction on the right side of the central axis is from the inside to the outside, so that the magnetic force of the central axis is certainly one side magnetic and the other side repels for the counterweight chamber 103, the coil 9 at one side of the attraction counterweight cavity 103 and the upward rotating side of the cylinder 1 are at the same side of the central axis, so that in the process of ascending the grinding ball 10, the coil 9 close to the ascending side generates suction to the grinding ball 10 to drive the grinding ball 10 to rotate upward, when the grinding ball ascends to a high position, the other side generates magnetic repulsion to the counterweight cavity 103 due to the opposite magnetic fields, so that when the whole grinding ball 10 falls downward, besides the gravity of the grinding ball, a magnetic repulsion is provided to increase the falling force of the grinding ball 10, thereby improving the force when the grinding ball 10 impacts powder, and because the magnetic repulsion between the grinding balls 10 is weak, the grinding balls can also impact under the action of the magnetic repulsion of the gravity and the external magnetic field, and the grinding balls have larger impact force when impacting the material under the action of the external magnetic repulsion, make the efficiency of grinding obtain improving, in addition this in-process, because the counterweight sand 104 is easily by the magnetized material, in-process rising, because the magnetization, make originally do not have magnetic material possess magnetism under the effect in magnetic field, this kind of magnetism disappears when magnetic field disappears, can weaken gradually or disappear, because pivoted power is greater than magnetic attraction, make grinding ball 10 change magnetic field, two magnetic field distances are nearer, counterweight sand 104 is because contact magnetism is inhaled magnetic field earlier this moment, consequently, the effect of dysmorphism looks absorption, counterweight sand 104 has the magnetism the same with magnetism repulsion magnetic field magnetism, therefore, when changing magnetic field, counterweight sand 104 is located the top under magnetic attraction effect this moment, after changing magnetic field, make counterweight sand 104 descend suddenly, also can be for an increase whereabouts power of the whereabouts of whole grinding ball 10, play a gain effect for the improvement of grinding efficiency.

Referring to fig. 6 and 4, in this figure, regarding the wire connection manner of the coils 9 on the fixed ring body 7, the coils 9 on the fixed ring body 7 are in a group, each group of coils 9 is connected in series along the circumferential direction of the fixed ring body 7, from the side where the grinding ball 10 rises, the number of the coils 9 in parallel is gradually increased by one from the highest point, for example, the uppermost coil 9 is connected in series, the next group is two coils connected in parallel, the two coils connected in parallel are connected in series with the rest of the coils 9, and then the three coils are connected in parallel, and then the coils are connected in series with the rest of the coils, when referring to fig. 6, assuming that the power supply voltage is U, the voltage of the parallel circuits is the same, assuming that the resistance of a single coil is R, since the magnetic field strength of a single coil 9 is H = N I/le, here, since all the coils are the same, the magnetic field strength of a single coil is proportional to I, I = U = N/le is larger, the current of a group of coils is gradually increased, and then the resistance of the coils is gradually increased from R = U = R, when the total resistance of the group of coils is increased, the three coils, I = R is gradually increased, and then the resistance of coils is increased, I = 3, I = R is gradually increased, when the group of the resistance of the parallel circuits is gradually increased, the group of the parallel circuits is gradually increased, I is increased, and then, when the resistance of coils is increased, the resistance of coils is increased in parallel circuits, from the single group of coils 9 close to the lowest point of the stepped lining plate 4 to the single group of coils 9 close to the highest point, the resistance is gradually increased, the current is gradually reduced, the magnetic field is gradually reduced when the magnetic field rises to the highest point, the magnetic field is weakest at the moment, the grinding ball 10 descends on the other side, the magnetic field and the current are gradually reduced, the resistance gradually rises, therefore, when the grinding ball ascends, as the magnetic field is gradually reduced, the magnetic attraction force of the coils 9 on the grinding ball 10 is also gradually reduced, the grinding ball 10 is prevented from being positioned at the highest point, the magnetic attraction force also acts on the grinding ball at the moment, the falling of the grinding ball is prevented from being halved, the influence is caused by the magnetic attraction force, the upward magnetic attraction force pulls the grinding ball upwards, the downward impact force is reduced, after the magnetic field is set in such a way, the magnetic repulsion force is maximum when the rising magnetic attraction force is lowest, the small ball has larger downward force, the magnetic field offset effect is reduced, after the grinding ball falls by half, the magnetic repulsion force on the descending side is gradually reduced, the magnetic attraction force on the rising side is increased, and the grinding ball is increased, thereby the grinding effect is improved.

The using method of the invention is as follows:

when the stepped lining plate 4 rotates, because the magnetic repulsion force of the grinding balls 10 is weak, in the rising process, friction force can drive a part of grinding balls to rise, the magnetic attraction force can also drive the grinding balls to rise, and when the grinding balls rise to a high place, at this time, the other side, due to the opposite magnetic fields, will generate a magnetic repulsion force to the weight chamber 103, so that when the grinding ball 10 falls down, besides its own gravity, there is a magnetic repulsion force, the falling force of the grinding ball 10 increases, thereby increasing the force when the grinding ball 10 strikes the powder, and since the magnetic repulsion force between the grinding balls 10 is weaker, at this time, under the action of the magnetic repulsion force of the gravity plus the external magnetic field, the grinding balls will also strike, and due to the magnetic field intensity at the two sides, when the grinding ball rises, since the magnetic field is gradually reduced, the magnetic attraction force of the coil 9 to the grinding ball 10 is also gradually reduced, so that it can be avoided that when the grinding ball 10 is at the highest position, the magnetic attraction force still acts on the grinding ball, thereby affecting the falling of the grinding ball, and avoiding that when the grinding ball does not fall to half, it is affected by the magnetic attraction force, make ascending magnetic attraction drag the grinding ball upwards, reduce impact downwards, the magnetic field sets up the back like this, the magnetic repulsion that rises is the minimum time, magnetic repulsion is the biggest, make the bobble have bigger power downwards once, reduce magnetic field and offset the effect, after the grinding ball drops half, the magnetic repulsion that the decline side reduced gradually this moment, and the magnetic attraction that the side that rises is in the increase, will have a suction that continues to the grinding ball, increase the whereabouts impact of grinding ball, thereby the grinding effect has been improved.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a finished product cement clinker ball mill, includes barrel (1), barrel (1) is close to both ends outside surface mounting has crawler shoe housing (2), wherein one end of barrel (1) is feed inlet (3), its characterized in that: the utility model discloses a lead wire grinding device, including barrel (1), feed inlet (3), outer protection housing (5), fixed connection between outer protection housing (5) and barrel (1), top fixed mounting of outer protection housing (5) has power (6), install between the inside wall of outer protection housing (5) and the lateral wall of barrel (1) fixed ring body (7), fixed ring body (7) and outer protection housing (5) fixed mounting, contactless between the inside wall of fixed ring body (7) and the lateral wall of barrel (1), be provided with between the outside wall of outer protection housing (5) and fixed ring body (7) and receive line chamber (8), receive line chamber (8) and place for the conductor wire, install coil (9) on fixed ring body (7), the inside ball 10 of grinding of step (4) is provided with through screw fixed mounting, the one end surface that barrel (1) is close to feed inlet (3) is provided with outer protection housing (5), and outer protection housing (5) and slide shoe housing (2).

2. A finished cement clinker ball mill as claimed in claim 1, characterized in that: grinding ball (10) are including spheroid (101), counter weight chamber (103) have been seted up to the inside of spheroid (101), the inside fixed mounting of spheroid (101) has hollow magnetic ball (102), hollow magnetic ball (102) do not contact with counter weight chamber (103) direct contact, the inside in counter weight chamber (103) is provided with counter weight sand (104), the material of spheroid (101) is the material that the quality is heavier and diamagnetic, hollow magnetic ball (102) are the weak magnetic material of single magnetism nature, counter weight sand (104) are for being greater than the density of spheroid (101) by the density of magnetized material and counter weight sand (104).

3. The finished cement clinker ball mill as claimed in claim 1, wherein: the novel grinding wheel is characterized in that the coils (9) are uniformly distributed along the axial direction and the circumferential direction of the fixed ring body (7), the coils (9) are symmetrically distributed along the vertical central axis of the outer protection housing (5), the magnetic pole distribution mode of the coils (9) on one side of the central axis of the coils (9) is just opposite to that on the other side, the central axis of the coils (9) is collinear with the radius of the outer protection housing (5), one side of the coils (9) on the fixed ring body (7) generating magnetic attraction force on the grinding balls (10) is located on the same side of the vertical central axis of the outer protection housing (5) as the ascending side of the grinding balls (10) inside the stepped lining plate (4).

4. A finished cement clinker ball mill as claimed in claim 1, characterized in that: the axial upper coils (9) of the fixed ring body (7) form a group, each group of coils (9) are connected in series along the circumferential direction of the fixed ring body (7), and when viewed from the rising side of the grinding ball (10), the highest point is downward along the axial direction, and the number of the coils (9) in each group connected in parallel is gradually increased by one.