Heat exchanger assembly of preheater

Abstract

The utility model relates to a heat exchanger assembly of a preheater, which aims to solve the technical problem that a fixed heat exchange sheet is troublesome to clean at present, and comprises a chimney and a heat exchange structure, the heat exchange structure is arranged on the outer ring wall of the chimney; the heat exchange structure comprises fixing strips and heat exchange pieces. The fixing strip is fixedly arranged on the outer ring wall of the chimney; the inner ends of the heat exchange pieces are matched with inserting grooves formed in the outer ends of the fixing strips in an inserted mode. The two ends of the fixing strips are in positioning fit with the bottoms of the two ends of the heat exchange pieces through positioning assemblies correspondingly. The positioning assembly comprises a positioning rod, a movable block and a spring; the positioning rod is arranged at the end part of the fixing strip in a penetrating manner; the inner ends of the positioning rods are matched with inserting holes formed in the ends of the heat exchange pieces in an inserted mode. The movable block is fixedly arranged at the outer end of the positioning rod; the smoke pipe heat exchanger has the advantages that the heat exchange pieces can be rapidly detached from the smoke pipe, the heat exchange pieces can be rapidly installed after being cleaned outside, and the heat exchange pieces can be conveniently cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of preheating, in particular to a heat exchanger component of a preheater. Background Art

[0002] In cement production, the preheater uses the flue gas in the flue at the tail of the kiln to preheat the air entering the kiln to a certain temperature through the internal heat sink.

[0003] The preheater is equipped with a heat exchanger. The flue gas in the flue at the tail of the kiln passes through the heat exchanger, and the air passes through the inner cavity between the heat exchanger and the preheater, and the heat is exchanged by the heat exchanger fins on the heat exchanger. However, the heat exchanger fins on the existing heat exchanger are fixed on the heat exchanger. After long-term use, when the heat exchanger fins are at a high temperature, impurities in the passing air will adhere to the surface of the heat exchanger fins. Excessive impurities will affect the heat exchange effect of the heat exchanger fins, and it is more troublesome to clean the fixed heat exchanger fins.

[0004] In view of this, we propose a heat exchanger assembly for a preheater. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, meet practical needs, and provide a heat exchanger assembly for a preheater to solve the current technical problem that it is troublesome to clean fixed heat exchange fins.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a heat exchanger assembly of a preheater, including a chimney and a heat exchange structure;

[0007] The chimney is arranged in the preheater;

[0008] A plurality of heat exchange structures are arranged in a ring array on the outer wall of the chimney;

[0009] The heat exchange structure includes a fixing bar and a heat exchange fin;

[0010] The fixing strip is fixed on the outer wall of the chimney;

[0011] The inner end of the heat exchange plate is inserted and matched with the slot provided at the outer end of the fixing strip;

[0012] Wherein, the two ends of the fixing strip are respectively positioned and matched with the bottom of the two ends of the heat exchange plate through positioning components;

[0013] The positioning assembly includes a positioning rod, a movable block and a spring;

[0014] The positioning rod is passed through the end of the fixing bar;

[0015] Wherein, the inner end of the positioning rod is inserted and matched with the insertion hole opened at the end of the heat exchange plate;

[0016] The movable block is fixedly arranged at the outer end of the positioning rod;

[0017] The spring is sleeved on the positioning rod between the movable block and the end of the fixed bar.

[0018] Preferably, two guide rods are symmetrically provided on the movable block, the inner ends of the two guide rods are respectively fixedly connected to the ends of the fixing bars, and the outer ends of the two guide rods are respectively fixedly provided with limit blocks.

[0019] Preferably, connection structures are arranged at both ends of the chimney;

[0020] The connection structure includes a mounting ring, a limiting ring, an end cover plate and a joint;

[0021] The mounting ring is hoisted and fixed inside the preheater;

[0022] The limiting ring is fixedly arranged on the inner side of the inner wall of the mounting ring;

[0023] Wherein, the limiting ring is inserted and matched with the annular groove provided on the outer wall of the end of the chimney;

[0024] The end cover plate is fixedly arranged at the end of the chimney;

[0025] Wherein, the end cover plate is located outside the inner wall of the mounting ring;

[0026] The joint is arranged in the middle of the outer side of the end cover plate.

[0027] Preferably, an annular sealing strip is fixed in the groove formed on the inner outer ring of the end cover plate, and the annular sealing strip is in contact with and cooperates with the limiting ring.

[0028] Compared with the prior art, the beneficial effects of the utility model are:

[0029] 1. The utility model has the advantages of being able to quickly disassemble the heat exchanger from the chimney and quickly install the heat exchanger after cleaning outside by setting fixing strips, heat exchanger plates, positioning rods, movable blocks and springs, and is easy to clean the heat exchanger. It solves the problem that impurities in the passing air will adhere to the surface of the heat exchanger, and the adhesion of too many impurities will affect the heat exchange effect of the heat exchanger, which is troublesome to clean for fixed heat exchangers.

[0030] 2. The utility model has the advantages of limiting the moving active block and keeping the moving block stable, thereby making the positioning rod move stably, by providing the guide rod and the limiting block.

[0031] 3. The utility model has the advantage of being able to rotate the chimney when installing or removing the heat exchanger plate by arranging the installation ring, the limit ring, the annular groove, the end cover plate and the joint, so that the installation or removal position of the heat exchanger plate faces the staff, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0033] Figure 2 It is a schematic diagram of the heat exchange structure of the utility model;

[0034] Figure 3 For the utility model Figure 2 A magnified schematic diagram of point A;

[0035] Figure 4 This is a schematic diagram of the cross-sectional connection structure of the chimney of the utility model;

[0036] Figure 5 For the utility model Figure 4 An enlarged schematic diagram of point B;

[0037] In the figure: 1. chimney; 2. heat exchange structure; 3. connection structure;

[0038] 101, annular groove; 102, end cover plate; 103, joint; 104, annular sealing strip;

[0039] 201, fixing strip; 202, heat exchanger plate; 203, positioning assembly;

[0040] 2011, slot;

[0041] 2021, jack;

[0042] 2031, positioning rod; 2032, movable block; 2033, spring; 2034, guide rod; 2035, limit block;

[0043] 301. Mounting ring; 302. Limiting ring. DETAILED DESCRIPTION

[0044] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0045] Example 1: A heat exchanger assembly for a preheater, see Figures 1 to 5 , comprising a chimney 1 and a heat exchange structure 2;

[0046] The chimney 1 is arranged in the preheater; a plurality of heat exchange structures 2 are arranged in a circular array on the outer wall of the chimney 1;

[0047] The heat exchange structure 2 includes a fixing bar 201 and a heat exchange fin 202;

[0048] The fixing strip 201 is fixed to the outer wall of the chimney 1; the inner end of the heat exchange plate 202 is inserted into and matched with the slot 2011 opened at the outer end of the fixing strip 201; wherein, the two ends of the fixing strip 201 are respectively positioned and matched with the bottom of the two ends of the heat exchange plate 202 through the positioning components 203;

[0049] The positioning assembly 203 includes a positioning rod 2031, a movable block 2032 and a spring 2033;

[0050] The positioning rod 2031 is passed through the end of the fixed bar 201; wherein, the inner end of the positioning rod 2031 is plugged into and matched with the socket 2021 opened at the end of the heat exchange plate 202; the movable block 2032 is fixed to the outer end of the positioning rod 2031; the spring 2033 is sleeved on the positioning rod 2031 between the movable block 2032 and the end of the fixed bar 201, and the two ends of the spring 2033 are fixedly connected to the movable block 2032 and the end of the fixed bar 201 respectively, and the elastic coefficient of the spring 2033 is selected and used by the technical personnel in this profession according to the actual situation.

[0051] The utility model provides a fixing strip 201, a heat exchange plate 202, a positioning rod 2031, a movable block 2032 and a spring 2033, so that the heat exchange plate 202 can be quickly disassembled from the chimney 1, and the heat exchange plate 202 can be quickly installed after cleaning outside, which makes it easy to clean the heat exchange plate 202. This solves the problem that impurities in the passing air will adhere to the surface of the heat exchange plate 202, and the adhesion of too many impurities will affect the heat exchange effect of the heat exchange plate 202, which makes it difficult to clean the fixed heat exchange plate 202.

[0052] Specifically, two guide rods 2034 are symmetrically provided on the movable block 2032 , the inner ends of the two guide rods 2034 are respectively fixedly connected to the ends of the fixing strip 201 , and the outer ends of the two guide rods 2034 are respectively fixedly provided with limit blocks 2035 .

[0053] The utility model has the advantages of limiting the movable block 2032 by setting the guide rod 2034 and the limiting block 2035, maintaining the stable movement of the movable block 2032, and making the positioning rod 2031 move stably.

[0054] Furthermore, connecting structures 3 are arranged at both ends of the chimney 1;

[0055] The connection structure 3 includes a mounting ring 301, a limiting ring 302, an end cover plate 102 and a joint 103;

[0056] The mounting ring 301 is hoisted and fixed in the preheater; the limiting ring 302 is fixed on the inner side of the inner wall of the mounting ring 301; wherein the limiting ring 302 is inserted and matched with the annular groove 101 opened on the outer wall of the end of the chimney 1; the end cover plate 102 is fixed on the end of the chimney 1; wherein the end cover plate 102 is located on the outer side of the inner wall of the mounting ring 301; the joint 103 is arranged in the middle of the outer side of the end cover plate 102, and the joint 103 is connected to the flue gas duct.

[0057] The utility model has the advantage that the chimney 1 can be rotated when installing or removing the heat exchange plate 202 by arranging the installation ring 301, the limiting ring 302, the annular groove 101, the end cover plate 102 and the joint 103, so that the installation or removal position of the heat exchange plate 202 faces the staff, which is easy to operate.

[0058] Furthermore, an annular sealing strip 104 is fixed in the groove formed on the inner outer ring of the end cover plate 102 , and the annular sealing strip 104 is in contact with and cooperates with the limiting ring 302 .

[0059] The utility model provides the annular sealing strip 104 , and the annular sealing strip 104 is in contact with the limiting ring 302 , thereby enhancing the sealing effect of the connection.

[0060] Working principle: When using the device of the utility model, the chimney 1 is arranged in the preheater, the flue gas in the flue at the tail of the kiln passes through the chimney 1, and the air passes through the inner cavity between the heat exchanger and the chimney 1, and heat is exchanged by the heat exchange plate 202 on the chimney 1.

[0061] When cleaning the heat exchanger 202, the heat exchanger 202 close to the staff is disassembled, and the movable blocks 2032 at both ends are pulled outward. The movable blocks 2032 move outward along the guide rod 2034, and the positioning rod 2031 is pulled out accordingly, and the spring 2033 is stretched until the movable block 2032 is blocked by the limit block 2035. At this time, the inner end of the positioning rod 2031 leaves the socket 2021, and the corresponding heat exchanger 202 is taken out for cleaning. After cleaning, the movable block 2032 is pulled outward, and the corresponding heat exchanger 202 is inserted into the slot 2011, and then the movable block 2032 is released. Under the action of the spring 2033, the movable block 2032 moves inward along the guide rod 2034 until the inner end of the positioning rod 2031 is inserted into the socket 2021 to position the heat exchanger 202. Then rotate the chimney 1. Unlike the mounting ring 301 and the limiting ring 302, the annular groove 101 rotates with the chimney 1. The next heat exchange plate 202 is rotated close to the staff, and the above operation is repeated to clean the heat exchange plate 202.

[0062] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A heat exchanger assembly for a preheater, characterized in that: include: Chimney (1); A plurality of heat exchange structures (2) are arranged in a ring array on the outer wall of the chimney (1); The heat exchange structure (2) comprises: A fixing strip (201) fixedly mounted on the outer wall of the chimney (1); The inner end of the heat exchange plate (202) is inserted and matched with the slot (2011) provided at the outer end of the fixing strip (201); Wherein, the two ends of the fixing strip (201) are respectively positioned and matched with the bottoms of the two ends of the heat exchange plate (202) through positioning components (203); The positioning component (203) comprises: A positioning rod (2031) is inserted through the end of the fixing bar (201); The inner end of the positioning rod (2031) is inserted and matched with the insertion hole (2021) provided at the end of the heat exchange plate (202); A movable block (2032) is fixedly mounted on the outer end of the positioning rod (2031); The spring (2033) is sleeved on the positioning rod (2031) between the movable block (2032) and the end of the fixed bar (201).

2. The heat exchanger assembly of a preheater according to claim 1, characterized in that: Two guide rods (2034) are symmetrically provided on the movable block (2032), the inner ends of the two guide rods (2034) are respectively fixedly connected to the ends of the fixing bars (201), and the outer ends of the two guide rods (2034) are respectively fixedly provided with limit blocks (2035).

3. The heat exchanger assembly of a preheater according to claim 1, characterized in that: The two ends of the chimney (1) are respectively provided with connection structures (3); The connection structure (3) comprises: Mounting ring (301); A limiting ring (302) is fixedly arranged on the inner side of the inner wall of the mounting ring (301); The limiting ring (302) is inserted and matched with the annular groove (101) provided on the outer wall of the end of the chimney (1); An end cover plate (102) is fixedly mounted on the end of the chimney (1); Wherein, the end cover plate (102) is located outside the inner wall of the mounting ring (301); The joint (103) is arranged in the middle of the outer side of the end cover plate (102).

4. A heat exchanger assembly for a preheater according to claim 3, characterized in that: An annular sealing strip (104) is fixedly arranged in a groove formed on the inner outer ring of the end cover plate (102), and the annular sealing strip (104) is in contact with and cooperates with the limiting ring (302).

Images