A shuttle kiln waste heat recovery heat exchanger

Abstract

This utility model discloses a waste heat recovery heat exchange device for a shuttle-type high-temperature kiln, relating to the field of waste heat recovery technology. It includes a kiln body and a guide pipe located at the upper end of the kiln body. A heat exchange tube is fixedly installed inside the guide pipe, and a collection pipe is connected to the wall of the heat exchange tube. A control valve is fixedly sleeved on the wall of the collection pipe. A first connecting pipe is connected to the bottom of the guide pipe, and a second connecting pipe is connected to the top of the kiln body. A filter pipe is connected between the first and second connecting pipes, and a filter screen is fixedly installed inside the filter pipe. This utility model can add heat exchange water to the heat exchanger and filter the high-temperature flue gas discharged from the kiln body, minimizing the impact of smoke and dust on the heat exchange tube and thus affecting the heat exchange effect.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, specifically to a waste heat recovery heat exchanger for a shuttle high-temperature kiln. Background Technology

[0002] A shuttle kiln is a high-temperature heat treatment device that operates intermittently. It gets its name from the fact that the kiln body or kiln car can move back and forth on a track like a shuttle. It is widely used in the firing of refractory materials such as refractory bricks and refractory fibers. However, shuttle kilns generate a lot of waste heat during operation. Direct discharge would cause energy waste and environmental problems, so waste heat recovery is necessary. The traditional heat exchange method is to connect the heat exchange device to the exhaust pipe of the kiln body and recover waste heat through contact between the high-temperature flue gas and the heat exchange device. However, the high-temperature flue gas contains a lot of impurities. Direct contact with the heat exchange device can easily cause dust to cover the surface of the heat exchange device, reducing the amount of heat that the heat exchange device can receive and reducing the heat exchange effect.

[0003] Therefore, we propose a shuttle-type high-temperature kiln waste heat recovery heat exchanger to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the above-mentioned shuttle kiln waste heat recovery heat exchange device, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a shuttle-type high-temperature kiln waste heat recovery heat exchange device, which solves the problem that in the existing kiln waste heat recovery process, the high-temperature flue gas cannot be treated before contacting the heat exchange device, resulting in a decrease in the heat exchange effect of the heat exchange device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A waste heat recovery heat exchange device for a shuttle high-temperature kiln includes a kiln body and a guide pipe located at the upper end of the kiln body. A heat exchange pipe is fixedly installed inside the guide pipe, and a collection pipe is connected to the pipe wall of the heat exchange pipe. A control valve is fixedly sleeved on the pipe wall of the collection pipe.

[0008] The bottom of the guide pipe is connected to a first connecting pipe, the top of the kiln body is connected to a second connecting pipe, a filter pipe is connected between the first connecting pipe and the second connecting pipe, and a filter screen is fixedly inserted inside the filter pipe.

[0009] Preferably, a horizontal plate is fixedly provided on the upper end of the inner wall of the filter tube, a vertical rod is slidably passed through the inside of the horizontal plate, a movable ring is fixedly sleeved on the lower end of the vertical rod, a plurality of push rods evenly distributed axially are fixedly provided on the bottom of the movable ring, the lower end of the push rod is in contact with the upper surface of the filter screen, a spring is sleeved on the upper end of the vertical rod, the two ends of the spring are fixedly connected to the horizontal plate and the movable ring respectively, and the lower ends of the plurality of push rods are all hemispherical.

[0010] Preferably, a motor is fixedly mounted on the wall of the filter tube, and the end of the output shaft of the motor passes through the filter tube and is fixedly mounted on a push block. The push block is fitted with a mounting plate, and the mounting plate is fixedly sleeved with the vertical rod.

[0011] Preferably, the pusher is configured in a cam shape.

[0012] Furthermore, the filter tube, the first connecting tube, and the second connecting tube are all fixedly fitted with flanges at their openings, and adjacent flanges are bolted together.

[0013] Preferably, the top of the kiln body is fixedly provided with two symmetrically arranged support frames, and the guide pipe is installed inside the upper end of the two support frames.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. This utility model, through the kiln body, guide pipe, heat exchange pipe, first connecting pipe, second connecting pipe, filter pipe and filter screen, can add heat exchange water into the heat exchange and filter the high-temperature flue gas discharged from the kiln body, so as to avoid the dust covering the heat exchange pipe and affecting the heat exchange effect. In this way, the water inside the heat exchange pipe is heated, thereby ensuring the stable operation of heat exchange and improving the service strength of the heat exchange pipe.

[0016] 2. This utility model, through the inclusion of a filter tube, filter screen, horizontal plate, spring, moving wheels, push rod, push block, and mounting plate, enables the push rod to move intermittently downwards, causing the bottom of the push rod to strike the filter screen, thereby knocking off the dust accumulated on top of the filter screen and ensuring that the filter screen can perform stable filtration work for a long time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2This is a schematic diagram of the filter tube of this utility model;

[0020] Figure 3 For the present utility model Figure 2 A partial sectional view;

[0021] Figure 4 For the present utility model Figure 2 A partial sectional view from another perspective;

[0022] Figure 5 For the present utility model Figure 3 Enlarged schematic diagram of part A.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Kiln body; 2. Guide pipe; 3. Heat exchange pipe; 4. Collection pipe; 5. Control valve; 6. First connecting pipe; 7. Second connecting pipe; 8. Filter pipe; 9. Filter screen; 10. Horizontal plate; 11. Vertical rod; 12. Moving ring; 13. Push rod; 14. Spring; 15. Motor; 16. Push block; 17. Mounting plate; 18. Flange; 19. Support frame. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model discloses a waste heat recovery heat exchange device for a shuttle high-temperature kiln.

[0027] This utility model provides, for example Figure 1-5 The shuttle-type high-temperature kiln waste heat recovery heat exchange device shown includes a kiln body 1 and a guide pipe 2 located at the upper end of the kiln body 1. Two symmetrically arranged support frames 19 are fixedly provided on the top of the kiln body 1. The guide pipe 2 is installed inside the upper end of the two support frames 19. A heat exchange pipe 3 is fixedly installed inside the guide pipe 2. A collection pipe 4 is connected to the pipe wall of the heat exchange pipe 3. A control valve 5 is fixedly sleeved on the pipe wall of the collection pipe 4.

[0028] The bottom of the guide pipe 2 is connected to a first connecting pipe 6, and the top of the kiln body 1 is connected to a second connecting pipe 7. A filter pipe 8 is connected between the first connecting pipe 6 and the second connecting pipe 7. The pipe openings of the filter pipe 8, the first connecting pipe 6, and the second connecting pipe 7 are all fixedly fitted with flanges 18. Two adjacent flanges 18 are screwed together. A filter screen 9 is fixedly inserted inside the filter pipe 8.

[0029] To minimize the accumulation of dust and impurities at the bottom of the filter screen during use, thus affecting its filtration efficiency, such as... Figure 2-5As shown, a horizontal plate 10 is fixedly installed on the upper end of the inner wall of the filter tube 8. A vertical rod 11 slides through the interior of the horizontal plate 10. A moving ring 12 is fixedly sleeved on the lower end of the vertical rod 11. Multiple push rods 13 are fixedly installed at the bottom of the moving ring 12, which are evenly distributed axially. The multiple push rods 13 are arranged around the circumference of the moving ring 12 and face the filter screen 9. The lower end of the push rod 13 contacts and engages with the upper surface of the filter screen 9. A spring 14 is sleeved on the upper end of the vertical rod 11. The two ends of the spring 14 are fixedly connected to the horizontal plate 10 and the moving ring 12, respectively. The lower ends of the multiple push rods 13 are all hemispherical. A motor 15 is fixedly installed on the wall of the filter tube 8. The output shaft of the motor 15 passes through the filter tube 8 and is fixedly installed with a push block 16. The push block 16 is cam-shaped. A mounting plate 17 is fitted to the push block 16. The mounting plate 17 is fixedly sleeved with the vertical rod 11.

[0030] Working principle: When the shuttle high-temperature kiln waste heat recovery heat exchange device is working, the high-temperature flue gas generated by the kiln body 1 enters the filter tube 8 through the second connecting pipe 7. The filter screen 9 in the filter tube 8 filters the dust and other impurities in the flue gas, reducing the impurities from entering the subsequent heat exchange stage. The filtered high-temperature flue gas enters the guide pipe 2 through the first connecting pipe 6 and comes into contact with the heat exchange tube 3 in the guide pipe 2. The heat is transferred to the heat exchange water in the heat exchange tube 3 through heat transfer, thereby realizing waste heat recovery.

[0031] During the filtration process, the motor 15 starts and drives the push block 16 to rotate. Since the push block 16 is cam-shaped, it will intermittently push the mounting plate 17 when it rotates. The mounting plate 17 drives the vertical rod 11 to move down, and the vertical rod 11 pushes the moving ring 12 to move down, so that the lower end of the push rod 13 contacts the surface of the filter screen 9 and knocks the filter screen 9. At the same time, the spring 14 is stretched. When the push block 16 rotates to the point where it no longer contacts the mounting plate 17, the vertical rod 11, the moving ring 12 and the push rod 13 return to their original positions under the elastic force of the spring 14. Through the intermittent knocking of the push rod 13, the dust accumulated on the surface of the filter screen 9 can be shaken off, ensuring the filtration effect of the filter screen 9.

[0032] After heat exchange is completed, the control valve 5 is opened, and the heated water in the heat exchange tube 3 is discharged through the collection pipe 4 for use in other processes that require hot water. The support frame 19 provides stable support for the guide pipe 2. The filter pipe 8 is screwed to the first connecting pipe 6 and the second connecting pipe 7 through the flange 18, which facilitates disassembly and maintenance. The entire device reduces the coverage of dust on the heat exchange tube 3 by filtering before heat exchange, and improves the heat exchange efficiency of waste heat recovery.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A shuttle high-temperature kiln waste heat recovery heat exchange device, comprising a kiln body (1) and a flow guide pipe (2) arranged at the upper end of the kiln body (1), characterized in that, A heat exchange tube (3) is fixedly installed inside the guide tube (2), and a collection tube (4) is connected to the tube wall of the heat exchange tube (3). A control valve (5) is fixedly sleeved on the tube wall of the collection tube (4). The bottom of the guide pipe (2) is connected to a first connecting pipe (6), and the top of the kiln body (1) is connected to a second connecting pipe (7). A filter pipe (8) is connected between the first connecting pipe (6) and the second connecting pipe (7). A filter screen (9) is fixedly inserted inside the filter pipe (8).

2. The shuttle high-temperature kiln waste heat recovery heat exchange device according to claim 1, characterized in that, A horizontal plate (10) is fixedly provided on the upper end of the inner wall of the filter tube (8). A vertical rod (11) is slidably passed through the inside of the horizontal plate (10). A moving ring (12) is fixedly sleeved on the lower end of the vertical rod (11). A plurality of push rods (13) are fixedly provided on the bottom of the moving ring (12) in an axially uniform distribution. The lower end of the push rod (13) is in contact with the upper surface of the filter screen (9). A spring (14) is sleeved on the upper end of the vertical rod (11). The two ends of the spring (14) are fixedly connected to the horizontal plate (10) and the moving ring (12) respectively. The lower ends of the plurality of push rods (13) are all hemispherical.

3. The shuttle high-temperature kiln waste heat recovery heat exchange device according to claim 1, characterized in that, The filter tube (8) is fixedly equipped with a motor (15). The output shaft of the motor (15) passes through the filter tube (8) and is fixedly equipped with a push block (16). The push block (16) is equipped with a mounting plate (17). The mounting plate (17) is fixedly sleeved with the vertical rod (11).

4. The shuttle high-temperature kiln waste heat recovery heat exchange device according to claim 3, characterized in that, The pusher (16) is configured in a cam shape.

5. The shuttle high-temperature kiln waste heat recovery heat exchange device according to claim 1, characterized in that, The filter tube (8), the first connecting tube (6), and the second connecting tube (7) are all fixedly fitted with flanges (18), and two adjacent flanges (18) are screwed together.

6. The shuttle high-temperature kiln waste heat recovery heat exchange device according to claim 1, characterized in that, The top of the kiln body (1) is fixed with two symmetrically arranged support frames (19), and the guide pipe (2) is installed inside the upper end of the two support frames (19).

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