CN215113987U

CN215113987U - Splicing reinforced hanging piece and inner barrel of preheater

Info

Publication number: CN215113987U
Application number: CN202121635214.8U
Authority: CN
Inventors: 王大亮
Original assignee: Jiangsu Shuangfa Machinery Co ltd
Current assignee: Jiangsu Shuangfa Machinery Co ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-12-10
Anticipated expiration: 2031-07-16

Abstract

The utility model discloses a lacing film, lacing film and pre-heater inner tube are reinforceed in concatenation belongs to pre-heater technical field. The utility model relates to a splicing strengthening hanging piece, which comprises an upper hanging piece, a connecting piece and a lower hanging piece, wherein the upper hanging piece and the lower hanging piece are connected through the connecting piece; the bottom of the upper hanging piece is provided with an upper hanging part, the top of the lower hanging piece is provided with a lower hanging part, the upper hanging part, the connecting piece and the lower hanging part form a concave part on one side of the hanging piece, the vertical distance between the upper hanging part and the lower hanging part in the concave part is L, and the L is gradually reduced along the direction away from the connecting piece; due to the arrangement of the flaring in the concave portion, the lower hanging portion is more difficult to fall off from the upper hanging portion, and the splicing strength is improved.

Description

Splicing reinforced hanging piece and inner barrel of preheater

Technical Field

The utility model relates to a preheater technical field, more specifically say, relate to a lacing film and preheater inner tube are reinforceed in concatenation.

Background

The inner cylinder of the preheater is important equipment for ensuring normal production of cement, in a rotary kiln preheater for producing cement, the preheater needs to provide multistage concurrent heat exchange for material powder and hot air at the tail of a kiln so that the material powder finally enters the rotary kiln to be calcined, the inner cylinder can provide enough dispersion time for the material powder, the working condition environment of the inner cylinder is very severe in the process, the internal temperature of the inner cylinder can reach 1000 ℃, and the inner cylinder needs to bear scouring of high-speed wind dust and corrosion of acid-base oxides and faces high-speed scouring of high temperature, alkali steam, sulfur steam and powder.

The hanging piece preheater inner cylinder is a preheater inner cylinder type which is used more at present, has the advantages of convenient production, convenient assembly and low transportation cost, mainly comprises heat-resistant steel hanging pieces and ceramic hanging pieces, but the existing heat-resistant steel hanging pieces are formed by assembling and splicing castings, and have the advantages of low sealing effect, poor corrosion resistance, high energy consumption and short service cycle; the impact resistance is poor due to the fact that the pure ceramic materials are manufactured and spliced; the inner cylinder of the prior vane preheater has the technical problem of short service life.

The applicant has developed an integrated preheater inner cylinder which has better strength and greatly prolongs the service life of the integrated preheater inner cylinder in the using process, but compared with a hanging piece type inner cylinder, the integrated preheater inner cylinder has longer installation period and higher installation cost.

The concatenation mode type of lacing film is more among the prior art, but generally can adopt the mode of articulate to splice, but if the mode of articulate splices, still need further strengthen along its concatenation intensity of portion of articulate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lacing film and pre-heater inner tube are reinforceed in concatenation to the lower technical problem of lacing film formula pre-heater inner tube concatenation intensity among the prior art, through the reasonable setting with lacing film mosaic structure, improve the poor technical problem of concatenation intensity.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a splicing strengthening hanging piece, which comprises an upper hanging piece, a connecting piece and a lower hanging piece, wherein the upper hanging piece and the lower hanging piece are connected through the connecting piece; the bottom of the upper hanging piece is provided with an upper hanging part, the top of the lower hanging piece is provided with a lower hanging part, the upper hanging part, the connecting piece and the lower hanging part form a concave part on one side of the hanging piece, the vertical distance between the upper hanging part and the lower hanging part in the concave part is L, and the L is gradually reduced along the direction away from the connecting piece; due to the arrangement of the flaring in the concave portion, the lower hanging portion is more difficult to fall off from the upper hanging portion, and the splicing strength is improved.

Preferably, last hitching part and lower hitching part are the inclined plane towards the connecting piece, the contained angle between inclined plane and the horizontal plane is gamma, gamma's scope is: gamma is more than 0 degree and less than or equal to 75 degrees.

Preferably, the upper hanging part is provided with a first splicing fixing piece, and/or the lower hanging part is provided with a second splicing fixing piece.

Preferably, the first splicing fixing piece is a convex block, the second splicing fixing piece is a groove, and the convex block is matched with the groove;

or

The first splicing fixing piece is a groove, the second splicing fixing piece is a lug, and the groove is matched with the lug.

Preferably, the projection is in a pillar shape, and the cross-sectional area of the projection gradually decreases in a direction away from the surface of the hanging piece, and/or the groove gradually enlarges in an inward-outward direction.

Preferably, the first splicing contact surface of the first splicing fixing piece and the second splicing contact surface of the second splicing fixing piece incline towards one side far away from the connecting piece.

Preferably, the first splicing end face of the first splicing fixing piece and the second splicing end face of the second splicing fixing piece incline towards one side far away from the connecting piece.

Preferably, the angle of inclination is β, said 0 ° < β < 60 °.

Preferably, the inclination angle is α, the 0 ° < α < 60 °.

The utility model discloses a pre-heater inner tube, a serial communication port, including a plurality of lacing films, the lacing film is foretell lacing film, and a plurality of lacing film concatenations form the pre-heater inner tube.

Drawings

Fig. 1 is a schematic view of a hanging piece structure of the present invention;

fig. 2 is a schematic perspective view of a hanging piece of the present invention;

fig. 3 is a schematic perspective view of another view angle of a hanging piece of the present invention;

FIG. 4 is a cross-sectional view and a partial enlarged view of a hanging piece of the present invention;

fig. 5 is a cross-sectional view of a hanging piece of the present invention;

FIG. 6 is a cross-sectional view showing the distribution of internal reinforcing ribs in a hanging piece of the present invention;

fig. 7 is a schematic view of a hanging piece combination structure of the present invention;

FIG. 8 is a schematic view of the inner barrel structure of the present invention;

the structure of the inner cylinder is schematically shown;

the reference numerals in the schematic drawings illustrate:

100. hanging a piece; 101. hanging the film; 102. hanging the slices; 103. a top end fixing part of the inner cylinder; 110. hanging a connecting piece; 111. an upper hanging part; 112. a first splice fixture; 113. a first splice contact surface; 114. a first splice end face; 120. a connecting member; 130. a lower hanging part; 131. a lower hanging part; 132. a second splice fixture; 133. a second splice contact surface; 134. a second splice end face;

200. a reinforcement; 210. an upper reinforcement; 211. an upper hooking reinforcement part; 212. an upper reinforcement penetration portion; 220. connecting a reinforcing member; 222. connecting the reinforcing pipe penetrating part; 230. a lower reinforcement; 231. a lower hitch reinforcement portion; 232. a lower reinforcement pipe penetration portion;

301. an expansion part; 311. an upper fixing member; 312. a connecting part fixing member; 313. a lower fixing member;

400. molding materials;

510. a first sealing surface; 511. a first lower table top; 512. second lower table surface

520. A second sealing surface; 521. a first upper table; 522. a second upper table;

531. a first positioning member; 532. a second positioning member.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

The structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the achievable purpose. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like, referred to in the present specification, are used for clarity of description only, and are not used to limit the implementable scope, and changes or adjustments of the relative relationship thereof are also regarded as the implementable scope of the present invention without substantial changes in the technical content; in addition, the embodiments of the present invention are not independent of each other, but can be combined.

Example 1

The splicing reinforced hanging piece of the embodiment comprises an upper hanging piece 110, a connecting piece 120 and a lower hanging piece 130, wherein the upper hanging piece 110 is connected with the lower hanging piece 130 through the connecting piece 120; the bottom of the upper hanging piece 110 is provided with an upper hanging part 111, the top of the lower hanging piece 130 is provided with a lower hanging part 131, one side of the hanging piece is provided with a concave part formed by the upper hanging part 111, the connecting piece 120 and the lower hanging part 131, the vertical distance between the upper hanging part 111 and the lower hanging part 131 in the concave part is L, and the L is gradually reduced along the direction far away from the connecting piece 120; due to the arrangement of the flaring in the concave portion, the lower hanging portion 131 is enabled to be less prone to falling off from the upper hanging portion 111, and therefore splicing strength is improved.

It should be noted that the upper hanging part 111 and the lower hanging part 131 are both inclined surfaces facing the connecting member 120, an included angle between the inclined surfaces and a horizontal plane is γ, and the range of γ is: 0 ° < γ ≦ 75 °, in this example, γ 15 °.

The hanging piece splicing structure for splicing the reinforced hanging pieces further comprises a first splicing fixing piece 112 and a second splicing fixing piece 132, wherein the first splicing fixing piece 112 and the second splicing fixing piece 132 can be respectively arranged on the two hanging pieces; first concatenation mounting 112 and second concatenation mounting 132 can mutually support, be provided with first concatenation contact surface 113 on the first concatenation mounting 112, be provided with second concatenation contact surface 133 on the second concatenation mounting 132, first concatenation contact surface 113 makes first concatenation mounting 112 and second concatenation mounting 132 position relatively fixed through mutual contact with second concatenation contact surface 133. Through the cooperation of first concatenation mounting 112 and second concatenation mounting 132 for the lacing film after articulating is difficult to follow the landing of articulating, effectively improves the concatenation intensity of lacing film.

The first splicing fixing piece 112 is a convex block, and the first splicing contact surface 113 is one side surface of the convex block; the second splicing fixing piece 132 is a groove, and the second splicing contact surface 133 is a groove surface of the groove; the lug is matched with the groove; or the first splicing fixing piece 112 is a groove, and the first splicing contact surface 113 is a groove surface of the groove; the second splicing fixing piece 132 is a convex block, and the second splicing fixing piece 132 is one side surface of the convex block; the groove is matched with the lug. It should be noted that the lug is in a pillar shape, and along the direction far away from the surface of the hanging piece, the cross-sectional area of the lug is gradually reduced, and/or the groove is gradually enlarged along the direction from inside to outside, which is beneficial to improving the convenience of the hanging process.

The hanging piece of the embodiment comprises an upper hanging piece 110, a connecting piece 120 and a lower hanging piece 130, wherein the upper hanging piece 110 is connected with the lower hanging piece 130 through the connecting piece 120; the bottom of the upper hanging piece 110 is provided with an upper hanging part 111, and the top of the lower hanging piece 130 is provided with a lower hanging part 131; the hanging piece also comprises a splicing structure, and the splicing structure is the splicing structure; the upper hanging part 111 is provided with a first splicing fixing part 112, and/or the lower hanging part 130 is provided with a second splicing fixing part 132.

In addition, the width of the upper hanging piece 110 is D1, the width of the connecting piece 120 is D2, the width of the lower hanging piece 130 is D3, and D1, D2 and D3 satisfy the following relations: d1 > D2, and D3 > D2; the upper hooking parts 111 are formed at both sides of the position where the upper hooking part 110 is coupled to the coupling part 120, and the lower hooking parts 131 are formed at both sides of the position where the lower hooking part 130 is coupled to the coupling part 120.

The hanging piece of the embodiment, as shown in fig. 5 and 6, includes a reinforcing member 200 and a molding material 400, wherein the reinforcing member 200 is disposed inside the molding material 400; the hanging piece comprises an upper hanging piece 110, a connecting piece 120 and a lower hanging piece 130, wherein the upper hanging piece 110 is connected with the lower hanging piece 130 through the connecting piece 120; the width of the upper hanging piece 110 is D1, the width of the connecting piece 120 is D2, the width of the lower hanging piece 130 is D3, and D1, D2 and D3 satisfy the following relations: d1 > D2, and D3 > D2; upper hanging parts 111 are formed at both sides of the position where the upper hanging member 110 is connected to the connecting member 120, and lower hanging parts 131 are formed at both sides of the position where the lower hanging member 130 is connected to the connecting member 120; through using the reinforcement to the internal cylinder lacing film of preheater can improve the bulk strength of the internal cylinder lacing film of preheater to adopt foretell lacing film shape, the last lacing film portion of hanging down can be comparatively stable articulate the lower lacing film portion of hanging in last lacing film both sides, and this kind of concatenation mode is favorable to improving the holistic concatenation intensity of the internal cylinder of preheater, and improves the holistic sealing performance of the internal cylinder of preheater.

In addition, the upper hanging portion 111, the connector 120, and the lower hanging portion 131 form one recess on one side of the hanging piece. The length of the upper hanging piece 110 is H1, the length of the lower hanging piece 130 is H2, the length of the concave part is H3, and H1, H2 and H3 satisfy the following relations: h1+ H2 is not more than H3, and the arrangement is favorable for improving the convenience of hanging the hanging piece in the splicing process.

The reinforcement 200 includes an upper reinforcement 210, a connection reinforcement 220, and a lower reinforcement 230; the upper reinforcing member 210 is correspondingly disposed inside the molding material 400 at the upper hanging portion 111, the connecting reinforcing member 220 is correspondingly disposed inside the molding material 400 at the connecting member 120, and the lower reinforcing member 230 is correspondingly disposed inside the molding material 400 at the lower hanging portion 131. The upper reinforcement 210 and the lower reinforcement 230 are connected by a connection reinforcement 220. The upper reinforcement member 210 is transversely disposed in the upper hooking portion 111, and/or the lower reinforcement member 230 is transversely disposed in the lower hooking portion 131. The upper reinforcing member 210 is provided with an upper reinforcing through part 212, and/or the connecting reinforcing through part 222 is provided on the connecting reinforcing member 220, and/or the lower reinforcing through part 232 is provided on the lower reinforcing member 230, and the molding materials 400 at both sides of the reinforcing member 200 are connected through the upper reinforcing through part 212 and/or the connecting reinforcing through part 222 and/or the lower reinforcing through part 232. The upper reinforcement 210 is provided with an upper fixing member 311, and/or the connection reinforcement 220 is provided with a connection portion fixing member 312, and/or the lower reinforcement 230 is provided with a lower fixing member 313.

The inner cylinder of the preheater in the embodiment comprises a plurality of hanging pieces 100, the hanging piece 100 is the hanging piece 100 in the embodiment, and the plurality of hanging pieces 100 are spliced to form the inner cylinder of the preheater.

The hanging pieces comprise upper hanging pieces 110 and lower hanging pieces 130, any two hanging pieces 100 which are adjacent up and down are respectively an upper hanging piece 101 and a lower hanging piece 102, the upper hanging pieces 110 of the lower hanging pieces 102 are matched with the lower hanging pieces 130 of the upper hanging pieces 101, and the lower hanging pieces 102 are hung on the upper hanging pieces 101 through the matching of the upper hanging pieces 110 and the lower hanging pieces 130. Fig. 4 shows a partial schematic splicing view of an inner cylinder of a preheater according to this embodiment, which is shown in fig. 7; the hanging piece 100 is formed by splicing a plurality of hanging pieces 100, the hanging pieces 100 can be produced in a factory and then transported to a construction site for splicing, and the production, transportation and construction processes are convenient.

The hanging piece in the embodiment is used for a preheater inner cylinder formed by splicing a plurality of hanging pieces, the hanging piece 100 comprises a reinforcing piece 200 and a molding material 400, and the reinforcing piece 200 is arranged in the molding material 400; it should be noted that the molding material 400 includes a material that can be dried or fired to become a solid from a generally fluid or flexible castable material, such as a conventional refractory castable material, or a ceramic, and all of them are flowable or flexible before molding and can be fixed and molded after drying or firing.

In addition, the reinforcing member 200 in this embodiment can reinforce the internal structure of the molding material 400 in the molding material 400, in the specific production process of the hanging piece of this embodiment, the reinforcing member 200 can be placed in a mold for producing the hanging piece, then the molding material 400 in the flowing state or the flexible state is placed in the mold to be in the shape of the mold, and then the molding material is cured, for example, weathered and dried, and fired, etc., the molding material 400 in this embodiment is a casting material, and after the casting material is poured into the mold, the casting material is placed in a heating device for firing and molding, and finally the hanging piece in this embodiment is formed.

The hanging piece 100 comprises an upper hanging piece 110 and a connecting piece 120, wherein the connecting piece 120 is connected with the upper hanging piece 110, and the connecting piece 120 is arranged below the upper hanging piece 110; the lower part of the upper hanging piece 110 is provided with an upper hanging part 111; it should be noted that the upper hanging piece 110 is used to integrally hang the hanging piece 100 on the adjacent hanging piece 100 above or hang at the inner cylinder top end fixing part 103, and a part for hanging the inner cylinder of the preheater is reserved in the inner cylinder of the preheater indicated by the inner cylinder top end fixing part 103, which is a fixing ring in this embodiment as shown in fig. 7.

The hanging piece 100 of the embodiment further comprises a lower hanging piece 130, the lower hanging piece 130 is connected to the bottom end of the connecting piece 120, and a lower hanging part 131 is arranged at the upper part of the lower hanging piece 130; in this embodiment, the hanging piece 100 is provided with upper hanging parts 111 on both sides of the upper hanging part 110, and the hanging piece 100 is provided with lower hanging parts 131 on both sides of the lower hanging part 130. As shown in fig. 6, the hanging pieces 100 include an upper hanging piece 110 and a lower hanging piece 130, any two hanging pieces 100 adjacent up and down are respectively an upper hanging piece 101 and a lower hanging piece 102, the upper hanging piece 110 of the lower hanging piece 102 is arranged in a matching manner with the lower hanging piece 130 of the upper hanging piece 101, the lower hanging piece 102 is hung on the upper hanging piece 101 through the matching of the upper hanging piece 110 and the lower hanging piece 130, and the inner cylinder of the preheater shown in fig. 8 is finally formed by splicing in the same manner.

Through the splicing mode, the periphery of each hanging piece except the hanging piece 100 at the topmost end and the bottommost end is mutually fixed by 4 hanging pieces 100, so that the fixing mode of each hanging piece is very stable, and the hanging piece has very good sealing performance.

The reinforcing member of the embodiment is used for the preheater inner cylinder hanging piece 100, and comprises an upper reinforcing member 210 and a connecting reinforcing member 220, wherein the lower part of the upper reinforcing member 210 is an upper hanging reinforcing part 211, and the top end of the connecting reinforcing member 220 is connected with the upper reinforcing part 210. Through set up reinforcement 200 in shaping material 400 for the whole higher intensity that has of lacing film 100, it is not fragile under the suspension state, has prolonged life. The reinforcing member may be made of metal, or any other material having high rigidity, such as metal ceramic.

The upper reinforcing member 210 of the reinforcing member is correspondingly arranged inside the molding compound 400 at the upper hanging part 110, and the connecting reinforcing member 220 of the reinforcing member is correspondingly arranged inside the molding compound 400 at the connecting part 120. Go up reinforcement 210 and can consolidate last hanger 110 department shaping material 400, connect reinforcement 220 and can consolidate connecting piece 120 department shaping material 400, more importantly, go up reinforcement 210 and be connected reinforcement 220 and link to each other, it can strengthen the joint strength between hanger 110 department shaping material 400 and connecting piece 120 department shaping material 400, and go up reinforcement 210 and articulate the reinforcement 211 and can carry out effectual reinforcement to the shaping material 400 of last hookup portion 111, make lacing film 100 have excellent suspension strength, and then make the whole excellent suspension strength that has of preheater inner tube, the life of extension preheater inner tube.

In this embodiment, still include lower reinforcement 230, the upper portion of lower reinforcement 230 is provided with hangs reinforcement 231 down, the bottom of connecting reinforcement 220 is continuous with lower reinforcement 230, and lower reinforcement 230 can carry out effectual reinforcement to the molding compound 400 of hanging portion 131 department down, is favorable to further improving the hanging intensity of lacing film 100. The connection strength between the lower reinforcement 230 and the upper reinforcement 210 can be further improved by the connection reinforcement 220, so that the connection strength between the connection piece 120 of the hanging piece 100 and the upper hanging piece 110 and the lower hanging piece 130 is improved, and the connection piece 120 is effectively prevented from being broken under the action of gravity. The connection reinforcement member 220 has an elongated shape, and/or a plate shape and/or a bar shape, and in this embodiment, an elongated shape is used.

In addition, be provided with the portion of running through on the reinforcement 200, the shaping material 400 of reinforcement 200 both sides passes through the portion of running through links to each other, through the setting of portion of running through for shaping material 400 joint in portion of running through department effectively improves the intensive effect of reinforcement 200 to shaping material 400. Specifically, in this embodiment, as shown in fig. 2, the upper reinforcing member 210 is provided with an upper reinforcing penetration portion 212, the connection reinforcing member 220 is provided with a connection reinforcing penetration portion 222, and the lower reinforcing member 230 is provided with a lower reinforcing penetration portion 232.

Moreover, a fixing member may be disposed on the reinforcing member 200, the fixing member protrudes from the surface of the reinforcing member 200, and the arrangement of the fixing member may further improve the direct bonding performance between the molding material 400 and the reinforcing member 200, thereby effectively preventing the molding material 400 from falling off. Specifically, in this embodiment, the upper reinforcing member 210 is provided with an upper fixing member 311, the connection reinforcing member 220 is provided with a connection portion fixing member 312, and the lower reinforcing member 230 is provided with a lower fixing member 313.

An expansion part 301 is arranged between the reinforcing piece 200 and the molding material 400, and the expansion part 301 allows the reinforcing piece 200 not to extrude the molding material 400 after being expanded. In the hanger sheet production process, a metal product is a form that the reinforcing member 200 can adopt, but the metal product is easy to generate a thermal expansion effect, is easy to expand when being fired, and is also easy to expand when other castable is fired, and through the arrangement of the expansion part 301, such as a gap, the castable is prevented from generating internal damage due to internal stress when being expanded, so that the quality of the hanger sheet 100 is ensured. It should be noted, however, that the voids are only one embodiment and other means of avoiding expansion damage that would have the same effect are within the scope of this disclosure.

It is required to explain, the utility model discloses mention the cement processing field in the background art, but the utility model discloses a scope is not restricted to cement preheater inner tube, and other preheater inner tubes that can reference the field all should the utility model discloses an in the protection range.

In addition, the hanging piece in fig. 6 is also provided with a first splicing fixing member 112 and a second splicing fixing member 132, and the cross section is not cut to the plane containing the first splicing fixing member 112 and the second splicing fixing member 132.

The invention has been described above in detail with reference to specific exemplary embodiments. It will, however, be understood that various modifications and changes may be made without departing from the scope of the invention as defined by the appended claims. The detailed description and drawings are to be regarded as illustrative rather than restrictive, and any such modifications and variations are intended to be included within the scope of the present invention as described herein. Furthermore, the background is intended to illustrate the present state of the art and the meaning of the present development and is not intended to limit the present invention or the present application and the field of application of the present invention.

More specifically, although exemplary embodiments of the invention have been described herein, the invention is not limited to these embodiments, but includes any and all embodiments modified, omitted, such as combinations between various embodiments, adapted changes and/or substitutions as would be recognized by those skilled in the art from the foregoing detailed description. The limitations in the claims are to be interpreted broadly based the language employed in the claims and not limited to examples described in the foregoing detailed description or during the prosecution of the application, which examples are to be construed as non-exclusive. Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims. The scope of the invention should, therefore, be determined only by the appended claims and their legal equivalents, rather than by the descriptions and examples given above.

Claims

1. The splicing reinforced hanging piece is characterized by comprising an upper hanging connecting piece (110), a connecting piece (120) and a lower hanging connecting piece (130), wherein the upper hanging connecting piece (110) is connected with the lower hanging connecting piece (130) through the connecting piece (120); the bottom of the upper hanging piece (110) is provided with an upper hanging part (111), the top of the lower hanging piece (130) is provided with a lower hanging part (131), one side of the hanging piece is provided with a concave part formed by the upper hanging part (111), the connecting piece (120) and the lower hanging part (131), in the concave part, the vertical distance between the upper hanging part (111) and the lower hanging part (131) is L, and the L is gradually reduced along the direction away from the connecting piece (120).

2. The splice-reinforced hanging piece as claimed in claim 1, wherein the upper hanging part (111) and the lower hanging part (131) are both inclined surfaces facing the connecting member (120), the angle between the inclined surfaces and the horizontal plane is γ, and the range of γ is: gamma is more than 0 degree and less than or equal to 75 degrees.

3. The splice-reinforced hanging piece as claimed in claim 1, wherein the upper hanging part (111) is provided with a first splice-fixing member (112) and/or the lower hanging part (130) is provided with a second splice-fixing member (132).

4. The splice-reinforced hanging piece as claimed in claim 3, wherein the first splice-fixing member (112) is a protrusion, the second splice-fixing member (132) is a groove, and the protrusion and the groove are matched;

or

The first splicing fixing piece (112) is a groove, the second splicing fixing piece (132) is a lug, and the groove is matched with the lug.

5. The splice-reinforced hanging piece as claimed in claim 4, wherein the protrusion is in the shape of a pillar, and the cross-sectional area of the protrusion gradually decreases in a direction away from the surface of the hanging piece, and/or the groove gradually increases in a direction from inside to outside.

6. Splice-reinforced hanging sheet according to claim 3, wherein the first splice contact surface (113) of the first splice holder (112) and the second splice contact surface (133) of the second splice holder (132) are inclined towards the side remote from the connecting member (120).

7. The splice-reinforced hanging sheet as claimed in claim 3, wherein the first splice end surface (114) of the first splice holder (112) and the second splice end surface (134) of the second splice holder (132) are inclined toward a side away from the connecting member (120).

8. The splice-reinforced hanging sheet of claim 6 wherein the angle of inclination is β, and wherein 0 ° < β < 60 °.

9. The splice-reinforced hanging sheet of claim 7, wherein the inclination angle is α, and the angle is 0 ° < α < 60 °.

10. A preheater inner cylinder, characterized in that, includes a plurality of lacing films (100), lacing film (100) is a lacing film (100) of any one of claims 1-9, a plurality of lacing films (100) splice and form the preheater inner cylinder.