Combined sealing strip

Abstract

The invention relates to the technical field of grate coolers in the cement industry, and discloses a combined sealing strip which comprises an L-shaped sealing strip, an N-shaped sealing strip and a locking screw, the L-shaped sealing strip is inserted into the N-shaped sealing strip, a protection part is arranged on one side of the N-shaped sealing strip, the protection part is an abrasion-resistant strip, and the N-shaped sealing strip is arranged on the other side of the N-shaped sealing strip. The abrasion-resistant strip is fixed to one side of the N-shaped sealing strip through the locking screws, the bottom of the abrasion-resistant strip is attached to the L-shaped sealing strip, and the two ends of the L-shaped sealing strip and the two ends of the N-shaped sealing strip are each provided with a connecting assembly. According to the N-type sealing strip, the easy-to-wear part of the N-type sealing strip can be protected in a reinforced mode, the service life of the N-type sealing strip is greatly prolonged, the wear-resistant strip is made of materials with better wear resistance, the wear resistance is improved, the service life of the sealing strip is prolonged, and therefore cost is saved, maintenance operation can be conducted by only replacing the wear-resistant strip, and the service life of the N-type sealing strip is prolonged. The N-type sealing strip does not need to be replaced integrally, so that the maintenance cost is greatly saved.

Description

Technical Field

[0001] The invention relates to the technical field of grate coolers in the cement industry, in particular to a combined sealing strip. Background Art

[0002] Grate cooler is an important main equipment in the clinker burning system of cement plant. Its main function is to cool and transport cement clinker. At the same time, it provides hot air for rotary kiln and decomposition furnace, and is the main equipment for heat recovery in the burning system.

[0003] At present, the mainstream grate cooler in the industry is the fourth-generation in-line grate cooler. The inter-row seal of the in-line grate cooler mostly adopts a labyrinth seal structure, which is formed by a combination of inner and outer sealing strips to avoid leakage between rows. The combination of N and L-type sealing strips is a common form of labyrinth seal.

[0004] During the operation of the in-line grate cooler, there is relative movement between one side of the N-type sealing strip and the material, which causes the local wear of the N-type sealing strip to be faster and lose its sealing function prematurely. Although the wear of other parts of the N-type sealing strip is not large or even relatively intact, in order to ensure the sealing effect and avoid leakage between rows, the N-type sealing strip has to be replaced, which causes great waste and increases the equipment use and maintenance costs of the production enterprise. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a combined sealing strip, which is mainly used to solve the problem that although the wear on other positions of the N-type sealing strip is not large or even relatively intact, in order to ensure the sealing effect and avoid leakage between rows, the N-type sealing strip has to be replaced, thereby causing great waste.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A combined sealing strip comprises an L-shaped sealing strip, an N-shaped sealing strip and a locking screw, wherein the L-shaped sealing strip is inserted into the N-shaped sealing strip, a protective component is provided on one side of the N-shaped sealing strip, the protective component is an anti-wear strip, the anti-wear strip is fixed to one side of the N-shaped sealing strip by a locking screw, and the bottom of the anti-wear strip is fitted with the L-shaped sealing strip, and both ends of the L-shaped sealing strip and the N-shaped sealing strip are provided with connecting components, so that two groups of L-shaped sealing strips and N-shaped sealing strips are combined.

[0010] Furthermore, the connecting assembly includes a first convex lap section and a second convex lap section, the first convex lap section is integrally formed at one end of the N-type sealing strip, the second convex lap section is integrally formed at one end of the L-shaped sealing strip, the other end of the L-shaped sealing strip is integrally formed with a first concave lap section, and the other end of the N-type sealing strip is integrally formed with a second concave lap section.

[0011] On the basis of the above scheme, the specification of the first convex overlap section is equal to the specification of the first concave overlap section, and the specification of the second convex overlap section is equal to the specification of the second concave overlap section.

[0012] Based on the above scheme, the cross-sectional shape of the L-shaped sealing strip resembles a capital letter L, the cross-sectional shape of the N-shaped sealing strip resembles a capital letter N, and the L-shaped sealing strip and the N-shaped sealing strip are combined to form a maze structure.

[0013] Furthermore, the bottom of the N-shaped sealing strip is fixed to the L-shaped sealing strip by a plurality of locking screws.

[0014] On the basis of the above-mentioned solution, two grooves for accommodating locking screws are integrally formed on one side of the anti-wear strip, and the height and length of the locking screws do not exceed the grooves.

[0015] As a further solution of the present invention, the protective component is also a wear-resistant coating, and the wear-resistant coating is evenly coated on the outer side of the N-type sealing strip.

[0016] Furthermore, the protective component is also an L stainless steel plate, and the L stainless steel plate is bonded to the outer side of the N-type sealing strip, and the L stainless steel plate and the N-type sealing strip have the same shape.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides a combined sealing strip, which has the following beneficial effects:

[0019] 1. The present invention increases the anti-wear strip and arranges the anti-wear strip on one side of the N-type sealing strip, so that there is relative movement between the position of the anti-wear strip and the material, thereby strengthening the protection of the easily worn part of the N-type sealing strip and greatly improving the life of the N-type sealing strip.

[0020] 2. By designing a separate anti-wear strip for the easily worn area of ​​the N-type sealing strip, the anti-wear strip is made of a material with better wear resistance, which improves the wear resistance and increases the life of the sealing strip, thereby saving costs.

[0021] 3. By setting the locking screw, the anti-wear strip is installed on one side of the N-type sealing strip. When the anti-wear strip is worn out and fails, maintenance work can be carried out by replacing only the anti-wear strip, without replacing the entire N-type sealing strip, which greatly saves maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a right-side three-dimensional structural schematic diagram of a combined sealing strip embodiment 1 proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of an N-type sealing strip of a combined sealing strip embodiment 1 proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of an L-shaped sealing strip of a combined sealing strip embodiment 1 proposed by the present invention;

[0025] Figure 4 This is a left-side three-dimensional structural schematic diagram of a combined sealing strip embodiment 2 proposed by the present invention;

[0026] Figure 5 This is a schematic diagram of the lower three-dimensional structure of a combined sealing strip embodiment 3 proposed by the present invention.

[0027] In the figure: 1. anti-wear strip; 2. locking screw; 3. L-type sealing strip; 4. N-type sealing strip; 5. first convex lap section; 6. second convex lap section; 7. first concave lap section; 8. second concave lap section; 9. wear-resistant coating; 10. 316L stainless steel plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1

[0030] Reference Figure 1-Figure 3A combined sealing strip comprises an L-shaped sealing strip 3, an N-shaped sealing strip 4 and a locking screw 2. The L-shaped sealing strip 3 is inserted into the N-shaped sealing strip 4. A protective component is provided on one side of the N-shaped sealing strip 4. The protective component is an anti-wear strip 1. The anti-wear strip 1 is fixed to one side of the N-shaped sealing strip 4 by the locking screw 2. The bottom of the anti-wear strip 1 is fitted with the L-shaped sealing strip 3. The anti-wear strip 1 is installed on the side where there is relative movement between the N-shaped sealing strip 4 and the material by the locking screw 2. Therefore, during the operation of the in-line grate cooler, there is relative movement between the position of the anti-wear strip 1 and the material, thereby The easily worn part of the N-type sealing strip 4 is strengthened with protection, which greatly improves the service life of the N-type sealing strip 4. At the same time, the anti-wear strip 1 is installed and fixed by the locking screw 2. When the anti-wear strip 1 fails due to wear, maintenance work can be carried out by replacing only the anti-wear strip 1, without replacing the N-type sealing strip 4 as a whole, which greatly saves maintenance costs. Both ends of the L-type sealing strip 3 and the N-type sealing strip 4 are provided with connecting components, so that two groups of L-type sealing strips 3 and N-type sealing strips 4 are combined. In this embodiment, the anti-wear strip 1 is a fluororubber strip, and the L-type sealing strip 3 and the N-type sealing strip 4 are polyurethane sealing strips.

[0031] In particular, the connection assembly of the present invention includes a first convex overlap section 5 and a second convex overlap section 6. The first convex overlap section 5 is integrally formed at one end of the N-type sealing strip 4, and the second convex overlap section 6 is integrally formed at one end of the L-type sealing strip 3. The other end of the L-type sealing strip 3 is integrally formed with a first concave overlap section 7, and the other end of the N-type sealing strip 4 is integrally formed with a second concave overlap section 8. The specifications of the first convex overlap section 5 are equal to those of the first concave overlap section 7, and the specifications of the second convex overlap section 6 are equal to those of the second concave overlap section 8. When it is necessary When assembling two L-shaped sealing strips 3 and two N-shaped sealing strips 4, the first convex overlapping section 5 on one of the N-shaped sealing strips 4 is inserted into the first concave overlapping section 7 on the other N-shaped sealing strip 4, and at the same time, the second convex overlapping section 6 on one of the L-shaped sealing strips 3 is inserted into the second concave overlapping section 8 on the other L-shaped sealing strip 3, so as to form an L-shaped sealing strip section and an N-shaped sealing strip section without straight-through gaps, thereby preventing materials from entering under the grate bed through the gaps between adjacent sealing strips, and achieving the effect of no material leakage;

[0032] Furthermore, the cross-sectional shape of the L-shaped sealing strip 3 resembles a capital English letter L, and the cross-sectional shape of the N-shaped sealing strip 4 resembles a capital English letter N. The L-shaped sealing strip 3 and the N-shaped sealing strip 4 are combined to form a maze structure. The bottom of the N-shaped sealing strip 4 is fixed to the L-shaped sealing strip 3 by a plurality of locking screws 2. Two grooves for accommodating the locking screws 2 are integrally formed on one side of the anti-wear strip 1, and the height and length of the locking screw 2 do not exceed the groove. By installing the locking screw 2 in the groove, the locking screw 2 can be prevented from contacting the material.

[0033] Working principle of this embodiment: when in use, first insert the L-shaped sealing strip 3 into the N-shaped sealing strip 4, then fix the L-shaped sealing strip 3 and the N-shaped sealing strip 4 by the locking screw 2, so that the L-shaped sealing strip 3 and the N-shaped sealing strip 4 are assembled into a labyrinth structure, and then the anti-wear strip 1 is installed on the side where there is relative movement between the N-shaped sealing strip 4 and the material by the locking screw 2, so that during the operation of the in-line grate cooler, there is relative movement between the position where the anti-wear strip 1 is located and the material, thereby strengthening the protection of the easily worn part of the N-shaped sealing strip 4, greatly improving the service life of the N-shaped sealing strip 4, and at the same time, the anti-wear strip 1 is installed and fixed by the locking screw 2. When the anti-wear strip 1 fails due to wear, maintenance work can be carried out by replacing only the anti-wear strip 1, without replacing the N-shaped sealing strip 4 as a whole, which greatly saves maintenance costs.

[0034] Example 2

[0035] Reference Figure 4 A combined sealing strip. The difference between this embodiment and the above embodiment is that the protective component is a wear-resistant coating 9, and the wear-resistant coating 9 is evenly coated on the outside of the N-type sealing strip 4. The wear-resistant coating 9 is a zirconium nitride coating. The zirconium nitride coating has good hardness and wear resistance, and also has good decorativeness and corrosion resistance, thereby increasing the overall wear resistance of the N-type sealing strip 4.

[0036] Example 3

[0037] Reference Figure 5 A combined sealing strip. The difference between this embodiment and the above two embodiments is that the protective component is a 316L stainless steel plate 10, the 316L stainless steel plate 10 is bonded to the outside of the N-type sealing strip 4, and the 316L stainless steel plate 10 has the same shape as the N-type sealing strip 4. The 316L stainless steel plate 10 has high strength and strong wear resistance. At the same time, the 316L stainless steel plate 10 is not easy to wear, thereby further increasing the service life of the N-type sealing strip 4.

[0038] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0039] In the description of this article, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection; it can be a mechanical connection, it can be an electrical connection, or it can be a direct connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the description herein, it should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0041] 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 variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined sealing strip, comprising an L-shaped sealing strip (3), an N-shaped sealing strip (4) and a locking screw (2), characterized in that: The L-shaped sealing strip (3) is inserted into the N-shaped sealing strip (4); a protective component is provided on one side of the N-shaped sealing strip (4); the protective component is an anti-wear strip (1); the anti-wear strip (1) is fixed to one side of the N-shaped sealing strip (4) by means of a locking screw (2); and the bottom of the anti-wear strip (1) is in contact with the L-shaped sealing strip (3); both ends of the L-shaped sealing strip (3) and the N-shaped sealing strip (4) are provided with connecting components, so that two groups of L-shaped sealing strips (3) and N-shaped sealing strips (4) are combined.

2. A combined sealing strip according to claim 1, characterized in that: The connection assembly comprises a first convex lap section (5) and a second convex lap section (6); the first convex lap section (5) is integrally formed at one end of an N-shaped sealing strip (4); the second convex lap section (6) is integrally formed at one end of an L-shaped sealing strip (3); the other end of the L-shaped sealing strip (3) is integrally formed with a first concave lap section (7); the other end of the N-shaped sealing strip (4) is integrally formed with a second concave lap section (8).

3. A combined sealing strip according to claim 2, characterized in that: The specifications of the first convex overlapping section (5) are equal to those of the first concave overlapping section (7), and the specifications of the second convex overlapping section (6) are equal to those of the second concave overlapping section (8).

4. A combined sealing strip according to claim 3, characterized in that: The cross-sectional shape of the L-shaped sealing strip (3) resembles a capital letter L, and the cross-sectional shape of the N-shaped sealing strip (4) resembles a capital letter N. The L-shaped sealing strip (3) and the N-shaped sealing strip (4) are combined to form a labyrinth structure.

5. The combined sealing strip according to claim 1, characterized in that: The bottom of the N-shaped sealing strip (4) is fixed to the L-shaped sealing strip (3) via a plurality of locking screws (2).

6. A combined sealing strip according to claim 5, characterized in that: Two grooves for accommodating locking screws (2) are integrally formed on one side of the anti-wear strip (1), and the height and length of the locking screws (2) do not exceed the grooves.

7. A combined sealing strip according to claim 1, characterized in that: The protective component is also a wear-resistant coating (9), and the wear-resistant coating (9) is evenly coated on the outer side of the N-type sealing strip (4).

8. The combined sealing strip according to claim 1, characterized in that: The protective component is also a 316L stainless steel plate (10), and the 316L stainless steel plate (10) is bonded to the outside of the N-type sealing strip (4), and the 316L stainless steel plate (10) and the N-type sealing strip (4) have the same shape.

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