CN219454623U - Kiln mouth protection piece of assembled rotary cement kiln - Google Patents

Abstract

The utility model discloses a kiln mouth protection piece of an assembled rotary cement kiln, which comprises the following components: transverse guard plates, longitudinal guard plates, edge guard plates and staples. The transverse guard plate is transversely arranged, the longitudinal guard plate is longitudinally arranged, the baffle edge plate is bent by a plate body to form an inverted U-shaped structure, the baffle edge plate is obliquely arranged on the right part of the transverse guard plate and the upper part of the longitudinal guard plate, and the plate bodies on two sides of a notch of the U-shaped structure are respectively connected with the right end of the transverse guard plate and the upper end of the longitudinal guard plate to form an integrated Y-shaped iron guard. The transverse guard plate is provided with a first upward-protruding platform formed after bending, and the longitudinal guard plate is provided with a second outward-protruding platform formed after bending. The lower ends of the cramps are fixedly connected to the first platform and the second platform through fasteners 7. The cramp on the protective piece is assembled and fixed on the back iron, and meanwhile, the blocking edge part is integrally connected with the back iron body, so that the defect of the welding kiln mouth protective piece is effectively overcome.

Description

Kiln mouth protection piece of assembled rotary cement kiln

Technical Field

The utility model relates to the technical field of kiln mouth protection, in particular to a kiln mouth protection piece of an assembled rotary cement kiln.

Background

The cement production process mainly comprises three stages of raw material preparation, clinker firing and cement grinding. In which the firing of the cement clinker is a very critical stage, the usual equipment is a rotary kiln. The raw materials are preheated and pre-decomposed in a preheater and then sent into a rotary kiln, then calcined at the high temperature of 1300-1450 ℃, a series of solid phase reactions are carried out to form liquid cement clinker, the liquid cement clinker is discharged from a kiln opening to be cooled along with the rotation of a rotary kiln body, and finally the cement is formed through grinding. Because the temperature of the cement clinker can still reach 1100-1300 ℃ when being discharged from a kiln mouth, in order to protect the kiln body of the rotary kiln, a castable layer is usually arranged at the kiln mouth, the liquid cement clinker is discharged from the kiln mouth from the castable layer, the cement clinker can erode and wear the castable layer at high temperature in the process, and finally the kiln body is split, broken and shed. To alleviate the above-mentioned problem, a kiln mouth of the rotary cement kiln is usually provided with a guard such as a back iron, which can fix the castable at the kiln mouth through a staple, and helps to prevent the damaged castable from falling off from the kiln mouth.

The existing shapes of the back iron mainly comprise a V shape, a Y shape and the like, and the shapes of the cramps/rakes fixed on the back iron mainly comprise a V shape, a Y shape, a U shape and the like, such as kiln mouth back iron disclosed in Chinese patent documents of application numbers 201621356681.6 and 202211087609.8 and the like. At present, the cramp fixed on the back iron is mainly finished in a welding mode, and meanwhile, the blocking edge part of the Y-shaped back iron is also fixed at the corner of the back iron in a welding mode. On the one hand, the welding fixation mode has the problems that the contact area between the cramping and blocking edge part and the back iron is small, and the welding part is easily cracked due to expansion stress and the like caused by casting materials in the use process, so that the cramping and blocking edge part is separated from the back iron, and the fixation effect on the casting materials is lost. On the other hand, the thermal stress generated by welding can cause deformation of the back iron, and particularly in the case of dense distribution of the staples, the dimensional accuracy of the back iron is easily reduced, and the installation on a kiln mouth is affected.

Disclosure of Invention

In view of the above, the utility model provides the kiln mouth protection piece of the assembled cement rotary kiln, the cramp on the protection piece is assembled and fixed on the back iron, and meanwhile, the blocking edge part is integrally connected with the back iron body, so that the defect of the existing welding type kiln mouth protection piece is effectively overcome. Specifically, the technical scheme of the utility model is as follows.

A rotary cement kiln mouth guard of a modular type, comprising: transverse guard plates, longitudinal guard plates, edge guard plates and staples. Wherein: the transverse guard plate is transversely arranged, the longitudinal guard plate is longitudinally arranged, the baffle edge plate is bent by a plate body to form an inverted U-shaped structure, the baffle edge plate is obliquely arranged on the right part of the transverse guard plate and the upper part of the longitudinal guard plate, and the plate bodies on two sides of a notch of the U-shaped structure are integrally connected with the right end of the transverse guard plate and the upper end of the longitudinal guard plate respectively, so that an integrated Y-shaped iron guard body is formed. The transverse guard plate is provided with a first upward-protruding platform formed after bending, and the longitudinal guard plate is provided with a second outward-protruding platform formed after bending. The lower ends of the cramps are fixedly connected to the first platform and the second platform through fasteners, namely the cramps are distributed on the first platform and the second platform.

Further, the staple includes a locating rod and an anchor. The anchoring piece is fixed on the positioning rod to form an open fork structure, the lower section of the positioning rod is a threaded rod, and the threaded rod is fixed on the first platform and the second platform through the fastening piece.

Further, through holes are formed in the first platform and the second platform, the lower end of the positioning rod penetrates through the through holes and then is in threaded connection with the fastening piece, and fastening pieces are arranged on two sides of the platform, so that the lower end of the positioning rod is detachably fixed on the platform.

Further, the baffle plate is fixedly connected with the cramp, and the cramp is distributed on the upper side and the lower side of the baffle plate.

Further, a through hole is formed in the baffle plate, the lower end of the positioning rod penetrates through the through hole and then is in threaded connection with the fastening piece, and fastening pieces are arranged on two sides of the platform, so that the lower end of the positioning rod can be detachably fixed on the baffle plate.

Further, the side wall of the positioning rod is provided with a perforation, the anchoring piece is arranged on the positioning rod in a penetrating way through the perforation, and the bottom of the anchoring piece is fixed with the perforation in a welding way.

Further, the positioning rod and the surface of the anchoring piece are provided with raised patterns so as to increase the binding force with the castable layer.

Further, the included angle alpha between the baffle plate and the transverse guard plate is 120-135 degrees, and the baffle plate is helpful for preventing the castable layer at the edge of the kiln mouth from falling off.

Further, the lower end of the longitudinal guard plate is bent outwards to form a bottom supporting plate so as to lift the castable layer on the end face of the kiln mouth.

Further, the transverse guard plates on two sides of the first platform are provided with first fixing holes, so that the transverse guard plates are fixedly connected with the kiln body of the rotary kiln through fasteners. And a second fixing hole is formed in the longitudinal guard plate body below the second platform, so that the longitudinal guard plate is fixedly connected with the kiln mouth side wall of the rotary kiln through a fastener.

Compared with the prior art, the utility model has the beneficial effects that:

(1) Compared with the mode of welding the baffle plate on the back iron body, the Y-shaped back iron body with the integrated kiln mouth protecting piece of the assembled rotary cement kiln not only avoids the problem of deformation of the back iron body possibly caused by welding thermal stress, but also ensures that the baffle plate and the back iron body are connected more firmly by the integrated connection mode, and avoids the problem that the baffle plate falls off from the back iron body due to weld cracking caused by expansion stress caused by casting materials in the use process. In addition, because keep off along the board by the structure that forms after the stack is buckled to a part of back iron body, it is firm in connection not only with between the iron body, and thickness is bigger moreover, and rigidity is better, can satisfy the protection demand better.

(2) According to the assembly type cement rotary kiln mouth protecting piece, the first and second protruding platforms are respectively formed on the transverse protecting plate and the longitudinal protecting plate through bending, so that the cramp is conveniently assembled and connected to the transverse protecting plate and the longitudinal protecting plate through the fasteners, and the cramp is assembled and connected to the transverse protecting plate and the longitudinal protecting plate, so that the problem of cracking of welding seams between the cramp and the protecting plate caused by expansion stress caused by casting materials in the using process is solved.

(3) According to the assembly type cement rotary kiln mouth protecting piece, the anchor piece of the cramp is fixed in the through hole on the locating rod, so that the contact area of the anchor piece and the locating rod is larger, the connection is firmer after welding, and even if the welding seam of the anchor piece and the locating rod is cracked due to expansion stress caused by casting materials, the anchor piece cannot be separated from the locating rod, and at the moment, the anchor piece still can play an anchor role on the casting materials, so that the falling of the casting materials is reduced, and the service life of a casting material layer is prolonged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

Fig. 1 is a schematic view showing the structure of a kiln mouth guard of an assembled rotary cement kiln in the following embodiments.

Fig. 2 is a schematic structural view of a positioning rod in the following embodiment.

FIG. 3 is a schematic view of the structure of the anchor in the following embodiment.

Fig. 4 is a view showing the use state of the kiln mouth guard of the assembled rotary cement kiln in the following embodiments.

The numerical references in the above figures represent respectively: the device comprises a 1-transverse guard plate, a 2-longitudinal guard plate, a 3-baffle plate, 4-cramping, a 5-first platform, a 6-second platform, 7-fasteners, an 8-castable layer, a 9-bottom supporting plate, a 10-first fixing hole, a 11-kiln body, a 12-second fixing hole, 13-bolts, 401-locating rods, 402-anchoring pieces and 403-perforations.

Detailed Description

For convenience of description, the words "upper", "lower", "left" and "right" in the present utility model, if they mean only that the directions are consistent with the upper, lower, left, and right directions of the drawings per se, and do not limit the structure, only for convenience of description and simplification of the description, but do not indicate or imply that the apparatus or element to be referred to needs to have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

The kiln mouth guard of the assembled rotary cement kiln of the utility model will be further described with reference to the drawings and the detailed description. Referring to fig. 1 and 4, the kiln mouth guard of the assembled rotary cement kiln comprises: the transverse guard plate 1, the longitudinal guard plate 2, the baffle plate 3 and the cramp 4. Wherein:

referring to fig. 1, the transverse guard plates 1, the longitudinal guard plates 2 and the edge guard plates 3 are different parts of a steel plate, and form an integrated Y-shaped back iron body. Specifically, the transverse guard plate 1 is transversely arranged, the longitudinal guard plate 2 is longitudinally arranged below the right end of the transverse guard plate 1, the baffle edge plate 3 is of an inverted U-shaped structure formed by bending a part of the steel plate, the baffle edge plate is obliquely arranged on the right part of the transverse guard plate 1 and the upper part of the longitudinal guard plate 2, and plate bodies on two sides of a notch of the U-shaped structure are integrally connected with the right end of the transverse guard plate 1 and the upper end of the longitudinal guard plate 2 respectively, so that an integrated Y-shaped iron guard body is formed. The included angle alpha between the baffle edge plate 3 and the transverse guard plate 1 is arbitrarily selected from 120-135 degrees, such as 120 degrees, 125 degrees, 130 degrees, 135 degrees and the like.

For the mode of welding keep off along board 3 on the back iron body, the back iron body of integration "Y" type of this embodiment has not only avoided the problem that welding thermal stress probably caused back iron body to warp, and this kind of mode of integration connection makes the connection between keep off along board 3 and the back iron body more firm moreover, has avoided taking place to cause the welding seam fracture because the expansion stress that the pouring material layer brought at the use, and then causes the problem that keeps off along board 3 and drop from the back iron body.

In addition, referring to fig. 1, since the flange 3 is formed by folding and overlapping a portion of the back iron body, the thickness thereof is thicker than that of the transverse guard plate 1 or the longitudinal guard plate 2. Referring to fig. 4, the edge baffle 3 mainly plays a role in blocking and bearing the castable layer 8 in the kiln mouth, preventing the castable layer from falling off, and simultaneously, needs to bear pressure when cement clinker is discharged from the kiln mouth, so that the edge baffle 3 needs to have good brightness, and the edge baffle 3 with the structure has firm connection with the iron body, larger thickness and better rigidity, and can better meet the protection requirement.

With continued reference to fig. 1, the transverse shield 1 has an upwardly projecting first platform 5 formed after bending, and the longitudinal shield 2 has an outwardly projecting second platform 6 formed after bending. The lower segment of the cramp 4 is a threaded rod, through holes are formed in the first platform 5 and the second platform 6, the lower end of the cramp 4 passes through the through holes and then is in threaded connection with the fastening piece 7 (such as a nut, etc.), and the fastening pieces 7 are arranged on two sides of the platform, so that the lower end of the positioning rod 401 can be detachably fixed on the platform. The first platform 5 and the second platform 6 are not only convenient for connecting the cramp 4 on the transverse guard plate 1 and the longitudinal guard plate 2 through assembly, but also can just hold the fastener 7 due to the space below the platforms, so that the problem that the lower ends of the cramp 4 pass through the transverse guard plate 1 and the longitudinal guard plate 2 to form a protruding part to influence the connection of the transverse guard plate 1 and the longitudinal guard plate 2 with the kiln body 11 of the rotary kiln is avoided. Meanwhile, as the cramp 4 is assembled and connected on the transverse guard plate 1 and the longitudinal guard plate 2, the problem that the dimension precision of the guard plate is reduced and the installation on a kiln mouth is affected due to deformation of the guard plate 2 caused by welding thermal stress when the cramp 4 is fixed on the guard plate in a traditional welding mode can be effectively avoided. Meanwhile, the connection mode ensures that the connection between the cramp 4 and the guard plate is firmer, and is helpful for preventing the problem of weld joint cracking between the cramp 4 and the guard plate caused by expansion stress brought by a casting material layer in the use process.

Referring to fig. 1, 2, 3 and 4, in another embodiment, the staple 4 of the rotary kiln hood guard of the assembly cement kiln exemplified by the above embodiment comprises a locating bar 401 and an anchor 402. Wherein: the anchoring piece 402 is of a V-shaped or U-shaped structure, a through hole 403 is formed in the side wall of the positioning rod 401, the anchoring piece 402 is arranged on the positioning rod 401 in a penetrating mode through the through hole 403 to form an open fork structure, and the bottom of the anchoring piece 402 is fixed with the through hole 403 in a welding mode. The lower end of the positioning rod 401 passes through the through holes on the first platform 5 and the second platform 6 and then is connected with the fastening piece 7 in a threaded manner, so that the lower end of the positioning rod 401 is detachably fixed on the platforms. Through adopting the mode of fixing the anchor 402 of the cramp 4 in the perforation 403 on the locating bar 401, not only make the area of contact between them bigger, the connection is more firm after the welding, even if the welding seam department of both is because of the expansion stress fracture that the castable layer brought, anchor 402 also can not break away from the locating bar 401, anchor 402 still can play the anchor effect to castable layer 8 at this moment, reduces the whereabouts of castable, increases the life of castable layer.

Referring to fig. 1 and 4, in another embodiment, the blocking edge plate 3 of the kiln mouth guard of the assembly type cement rotary kiln exemplified by the above embodiment is also fixedly connected with the staples 4, and the staples 4 are distributed on the upper side and the lower side of the blocking edge plate 3. The attachment of the staples 4 to the flange 3 is similar to the attachment of the staples 4 to the first and second platforms 5, 6. That is, the baffle plate 3 is provided with a through hole, and the lower end of the positioning rod 401 passes through the through hole and is in threaded connection with the fastening piece 7, so that the lower end of the positioning rod 401 is detachably fixed on the baffle plate 3. The arrangement of the staples 4 on the edge strip 3 helps to increase the discharge of the pouring material layer 8 from the edge strip 3

In another preferred embodiment, the surfaces of the positioning rod 401 and the anchoring piece 402 of the kiln mouth guard of the assembly cement rotary kiln exemplified by the above embodiment are provided with raised patterns, for example, the positioning rod 401 and the anchoring piece 402 are made of screw steel, so as to further increase the binding force between the whole of the cramp 4 and the castable layer 8.

Referring to fig. 1 and 4, in another embodiment, the lower end of the longitudinal guard plate 2 of the kiln mouth guard piece of the assembled rotary cement kiln illustrated in the above embodiment is bent outwards to form a bottom supporting plate 9, so as to lift the castable layer 8 on the end face of the kiln mouth, and reduce the risk of falling off the castable layer 8. The horizontal backplate plate bodies on two sides of the first platform 5 are respectively provided with a first fixing hole 10, the longitudinal backplate 2 plate bodies below the second platform 6 are respectively provided with a second fixing hole 12, and the horizontal backplate 1 is fixedly connected with the kiln body 11 of the rotary kiln through fasteners such as bolts 13 during installation. And the longitudinal guard plate 2 is fixedly connected with the kiln mouth side wall of the rotary kiln through a fastener, so that the kiln mouth guard piece of the assembled cement rotary kiln is integrally fixed on the kiln body 11 of the rotary kiln, and finally, the pouring of the pouring material layer 8 is carried out, and the guard piece is integrally poured in the pouring material layer 8. Along with the continuous rotation of the kiln body 11 which is obliquely arranged, cement clinker therein continuously moves from the kiln body 11 to the kiln mouth (refer to an arrow in fig. 4) and is finally discharged from the kiln mouth, in the process, the cement clinker continuously erodes and wears out the castable layer 8 at high temperature, and when the castable layer 8 is thinned to a certain extent, the castable layer 8 needs to be replaced again, and the kiln mouth protection piece tooth decay of the assembled cement rotary kiln in the embodiment is used for improving the combination between the castable layer 8 and the kiln body 11, prolonging the service life of the castable layer 8 and preventing the castable layer 8 from falling off in a large area due to cracking in the use process.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A kiln mouth guard of a rotary cement kiln, comprising:

the transverse guard plate is transversely arranged; the transverse guard plate is provided with a first platform which is formed after bending and protrudes upwards;

the longitudinal guard board is longitudinally arranged and provided with a second platform which is formed by bending and protrudes outwards;

the edge blocking plate is formed by bending a plate body to form an inverted U-shaped structure, the right part of the transverse guard plate and the upper part of the longitudinal guard plate are obliquely arranged, and the plate bodies on two sides of a notch of the U-shaped structure are respectively integrally connected with the right end of the transverse guard plate and the upper end of the longitudinal guard plate to form an integrated Y-shaped back iron body; and

the lower ends of the cramps are fixedly connected to the first platform and the second platform through fasteners.

2. The rotary kiln mouth guard of the fabricated cement of claim 1, wherein the staple comprises a locating rod and an anchor; the anchoring piece is fixed on the positioning rod to form an open fork structure, the lower section of the positioning rod is a threaded rod, and the threaded rod is fixed on the first platform and the second platform through the fastening piece.

3. The assembly rotary cement kiln mouth protection piece according to claim 2, wherein through holes are formed in the first platform and the second platform, the lower ends of the positioning rods penetrate through the through holes and are in threaded connection with the fastening pieces, and the fastening pieces are arranged on two sides of the platform, so that the lower ends of the positioning rods are detachably fixed on the platform.

4. The assembly rotary cement kiln mouth protection piece according to claim 2, wherein the blocking edge plate is fixedly connected with the cramp, and the cramp is distributed on the upper side and the lower side of the blocking edge plate.

5. The assembly type cement rotary kiln mouth protection piece according to claim 4, wherein the baffle plate is provided with a through hole, the lower end of the positioning rod passes through the through hole and is in threaded connection with the fastening piece, and the fastening pieces are arranged on two sides of the platform, so that the lower end of the positioning rod is detachably fixed on the baffle plate.

6. The rotary kiln mouth guard of claim 2, wherein the positioning rod has perforations in the side walls thereof, the anchor is threaded through the positioning rod, and the anchor is welded between the bottom and the perforations.

7. The rotary kiln mouth guard of claim 2, wherein the locating bar and anchor surfaces each have raised patterns.

8. A rotary kiln mouth guard according to any one of claims 1 to 7, wherein the included angle α between the skirt and the transverse guard plate is between 120 ° and 135 °.

9. The rotary kiln mouth guard of any one of claims 1 to 7, wherein the lower ends of the longitudinal guard plates are bent outwardly to form a bottom pallet.

10. The assembly rotary cement kiln mouth guard of any one of claims 1-7, wherein the transverse guard plate bodies on both sides of the first platform are provided with first fixing holes; and a second fixing hole is formed in the longitudinal guard plate body below the second platform.