Waste heat collecting device for red brick firing

Abstract

The utility model discloses a waste heat collecting device for red brick firing, which relates to the technical field of waste heat treatment and comprises a heat exchange tank, the top end of the heat exchange tank is fixedly communicated with an air outlet pipe, the outer wall of the lower part of the heat exchange tank is fixedly communicated with an air inlet pipe, one end of the air inlet pipe is fixedly communicated with a filter box, and the inner wall of the heat exchange tank is fixedly connected with a heat exchange pipe assembly. A heat exchange tube assembly is arranged in the heat exchange tank, a heat exchange groove is formed outside the heat exchange tube assembly, a first liquid inlet tube is connected to the bottom face of the heat exchange tank in a penetrating mode, and the top end of the first liquid inlet tube is communicated with the interior of the heat exchange groove. Smoke exchanges heat in the heat exchange tank in the rising process of the heat exchange pipe assembly, the temperature of the heat storage liquid is increased, the heat storage liquid is discharged through the first liquid outlet pipe, meanwhile, heat exchange pieces outside the first liquid inlet pipe and the first liquid outlet pipe are used for exchanging heat with high-temperature smoke entering through the gas inlet pipe, and circulation preheating and heat preservation of the heat storage liquid are achieved. Therefore, the heat utilization efficiency of the device is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of waste heat treatment technology, and in particular to a waste heat collection device for red brick firing. Background Technology

[0002] Red bricks are a common building material in the construction industry, and their firing process usually takes place in a brick kiln. The traditional red brick firing process consumes a lot of energy and generates a large amount of waste heat during the firing process. The waste heat generated during the brick kiln firing process accounts for a considerable proportion of the total energy consumption. If this waste heat is not utilized, it will not only waste energy but also cause thermal pollution to the environment.

[0003] However, in the existing technology, the heat exchange efficiency of the waste heat recovery equipment used for brick firing is low. It can only collect part of the waste heat and cannot make full use of the energy in the high-temperature flue gas discharged from the brick kiln. The contact time between the flue gas and the heat exchange medium is short, resulting in a large amount of heat being wasted with the flue gas emission. Utility Model Content

[0004] The purpose of this invention is to solve the problems of low heat exchange efficiency of existing waste heat recovery equipment, which can only collect a portion of the waste heat and cannot fully utilize the energy in the high-temperature flue gas discharged from the brick kiln. The short contact time between the flue gas and the heat exchange medium leads to a large amount of heat being wasted with the flue gas discharge. Therefore, a waste heat collection device for red brick firing is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a waste heat collection device for red brick firing, comprising a heat exchange tank, an outlet pipe fixedly connected to the top of the heat exchange tank, an inlet pipe fixedly connected to the lower outer wall of the heat exchange tank, a filter box fixedly connected to one end of the inlet pipe, a heat exchange tube assembly fixedly connected to the inner wall of the heat exchange tank, a heat exchange trough provided outside the heat exchange tube assembly, an inlet pipe connected through the bottom surface of the heat exchange tank, the top of the inlet pipe communicating with the inside of the heat exchange trough, an outlet pipe provided on one side of the inlet pipe, the top of the outlet pipe communicating through the bottom surface of the heat exchange tank and the inside of the heat exchange trough, heat exchange plates fixedly connected to the outer walls of both the inlet pipe and the outlet pipe, a connecting pipe fixedly connected to the top of the outlet pipe, a flue pipe fixedly connected to one end of the connecting pipe, a secondary heat exchange box fixedly sleeved on the outer wall of the flue pipe, and a second heat exchange plate fixedly connected to the inner wall of the middle part of the flue pipe.

[0006] Preferably, both ends of the heat exchange tube assembly are fixedly connected to the outer walls of the heat exchange tube assembly, and the inner wall of the heat exchange tank is fixedly connected to the sealing partition. The outer wall of the metal flexible connector is fixedly connected to the outer wall of the sealing partition.

[0007] Preferably, a maintenance plate is fixedly connected to the center of the bottom surface of the heat exchange tank, and a connecting rod is movably connected through the bottom surface of the maintenance plate.

[0008] Preferably, the top end of the connecting rod is fixedly connected to the bottom surface of the heat exchange tube assembly, and a vibration motor is fixedly installed at the bottom end of the connecting rod.

[0009] Preferably, a spring is fixedly connected between the outer wall of the vibratory motor and the inspection plate, and the spring is sleeved on the outer wall of the connecting rod.

[0010] Preferably, a temperature sensor is installed through the outer wall of the connecting pipe, an inlet pipe is fixedly connected to the bottom surface of the secondary heat exchange box, an outlet pipe is fixedly connected to the top surface of the secondary heat exchange box, and a liquid storage chamber is provided inside the secondary heat exchange box.

[0011] Preferably, a connecting pipe is fixedly connected to one side of the outer wall of the filter box, and a connecting pipe is fixedly connected to the other side of the filter box. One end of the connecting pipe is fixedly connected to the air inlet pipe, and a filter plate module is embedded in the top surface of the filter box.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, flue gas is introduced into the bottom of the heat exchange tank, and heat storage liquid is introduced into the heat exchange tank through the inlet pipe. The flue gas rises through the heat exchange tube assembly in the heat exchange tank to exchange heat, thereby raising the temperature of the heat storage liquid and discharging it through the outlet pipe. At the same time, the heat exchange plates outside the inlet pipe and the outlet pipe exchange heat with the high-temperature flue gas entering through the inlet pipe, realizing the circulation, preheating and heat preservation of the heat storage liquid, thereby effectively improving the heat utilization efficiency of this utility model.

[0014] 2. In this utility model, by setting up a vibration motor, the vibration motor is periodically started during operation to apply vibration to the heat exchange tube assembly through the connecting rod. The auxiliary metal flexible connecting piece causes the heat exchange tube assembly to shake to a certain extent, thereby facilitating the periodic automatic removal of dust from the surface of the heat exchanger and reducing the frequency of manual maintenance. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a waste heat collection device for red brick firing;

[0016] Figure 2 This utility model provides a schematic diagram of the internal structure of a heat exchange tank for a waste heat collection device used in red brick firing.

[0017] Figure 3 This utility model proposes a waste heat collection device for red brick firing. Figure 2 Enlarged view of the structure at point A in the middle;

[0018] Figure 4 This utility model proposes a waste heat collection device for red brick firing. Figure 2 Enlarged view of the structure at point B in the middle;

[0019] Figure 5 This utility model presents a schematic diagram of the internal structure of the secondary heat exchange box of a waste heat collection device for red brick firing.

[0020] Legend: 1. Heat exchange tank; 11. Inlet pipe; 12. Outlet pipe; 13. Heat exchange trough; 14. Heat exchange tube assembly; 15. Sealing partition; 16. Metal flexible connector; 2. Connecting pipe; 21. Temperature sensor; 3. Liquid inlet pipe 1; 31. Liquid outlet pipe 1; 32. Heat exchange plate 1; 4. Filter box; 41. Connecting pipe 1; 42. Connecting pipe 2; 43. Filter plate module; 5. Secondary heat exchange box; 51. Liquid inlet pipe 2; 52. Liquid outlet pipe 2; 53. Liquid storage chamber; 54. Heat exchange plate 2; 6. Exhaust pipe; 7. Connecting rod; 8. Vibration motor; 81. Spring; 82. Inspection plate. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figure 1 - Figure 5 As shown, this utility model provides a waste heat collection device for red brick firing, including a heat exchange tank 1. An outlet pipe 12 is fixedly connected to the top of the heat exchange tank 1, and an inlet pipe 11 is fixedly connected to the lower outer wall of the heat exchange tank 1. One end of the inlet pipe 11 is fixedly connected to a filter box 4. A heat exchange tube assembly 14 is fixedly connected to the inner wall of the heat exchange tank 1, and a heat exchange tank 13 is provided outside the heat exchange tube assembly 14. A liquid inlet pipe 3 is connected through the bottom surface of the heat exchange tank 1, with the top end of the liquid inlet pipe 3 communicating with the inside of the heat exchange tank 13. An outlet pipe 31 is provided on one side of the liquid inlet pipe 3, with the top end of the outlet pipe 31 penetrating the heat exchange tank 1. The bottom surface of the heat exchange tank 13 is connected to the interior of the heat exchange tank 13. The outer walls of the liquid inlet pipe 11 and the liquid outlet pipe 12 are fixedly connected to the heat exchange plate 32. The top end of the gas outlet pipe 12 is fixedly connected to the connecting pipe 2. One end of the connecting pipe 2 is fixedly connected to the exhaust pipe 6. The outer wall of the exhaust pipe 6 is fixedly sleeved with the secondary heat exchange box 5. The middle inner wall of the exhaust pipe 6 is fixedly connected to the heat exchange plate 24. The outer wall of the connecting pipe 2 is through which the temperature sensor 21 is installed. The bottom surface of the secondary heat exchange box 5 is fixedly connected to the liquid inlet pipe 21. The top surface of the secondary heat exchange box 5 is fixedly connected to the liquid outlet pipe 22. The interior of the secondary heat exchange box 5 is provided with a liquid storage chamber 53.

[0024] The specific settings and functions of this embodiment are described in detail below. The flue gas enters the bottom of the heat exchange tank 1 through the filter plate module 43 in the filter box 4, and the heat storage liquid is introduced into the heat exchange tank 13 through the liquid inlet pipe 3. The flue gas rises in the heat exchange tank 1 through the heat exchange tube assembly 14 to exchange heat, so that the temperature of the heat storage liquid is raised and discharged through the liquid outlet pipe 31. At the same time, the heat exchange plate 32 outside the liquid inlet pipe 3 and the liquid outlet pipe 31 exchanges heat with the high temperature flue gas entering through the air inlet pipe 11, realizing the circulation, preheating and heat preservation of the heat storage liquid, thereby effectively improving the heat utilization efficiency of this utility model. The heat exchange plate 54 in the secondary heat exchange box 5 is used to perform secondary heat exchange on the flue gas discharged from the exhaust pipe 6. Water is introduced through the liquid inlet pipe 51, the liquid outlet pipe 52 and the liquid storage chamber 53 to heat domestic water or provide heating for the workshop.

[0025] Example 2: Figure 1 - Figure 5 As shown, metal flexible connecting pieces 16 are fixedly connected to the outer walls of both ends of the heat exchange tube assembly 14. A sealing partition 15 is fixedly connected to the inner wall of the heat exchange tank 1. The outer wall of the metal flexible connecting piece 16 is fixedly connected to the outer wall of the sealing partition 15. A maintenance plate 82 is fixedly connected to the center of the bottom surface of the heat exchange tank 1. A connecting rod 7 is movably connected through the bottom surface of the maintenance plate 82. The top end of the connecting rod 7 is fixedly connected to the bottom surface of the heat exchange tube assembly 14. A vibration motor 8 is fixedly installed at the bottom end of the connecting rod 7. A spring 81 is fixedly connected between the outer wall of the vibration motor 8 and the maintenance plate 82. The spring 81 is sleeved on the outer wall of the connecting rod 7. A connecting pipe 41 is fixedly connected to one side of the outer wall of the filter box 4. A connecting pipe 42 is fixedly connected to the other side of the filter box 4. One end of the connecting pipe 42 is fixedly connected to the air inlet pipe 11. A filter plate module 43 is embedded in the top surface of the filter box 4.

[0026] The overall effect of this embodiment is that, through the connection pipe 41 to the exhaust port of the red brick firing furnace, the flue gas is filtered by the filter plate module 43 in the filter box 4, achieving preliminary filtration of dust particles in the flue gas. Through the setting of the vibration motor 8, the present invention can periodically start the vibration motor 8 to apply vibration to the heat exchange tube assembly 14 through the connecting rod 7 during operation. The setting of the auxiliary metal flexible connecting piece 16 makes the heat exchange tube assembly 14 shake at a certain amplitude, thereby facilitating the periodic automatic removal of dust accumulation on the surface of the heat exchanger by the heat exchange tube assembly 14, reducing the frequency of manual maintenance.

[0027] The device is used as follows: During use, it is connected to the exhaust port of the red brick firing furnace through connecting pipe 41. The flue gas enters the bottom of the heat exchange tank 1 after being filtered by the filter plate module 43 in the filter box 4. The heat storage liquid is introduced into the heat exchange tank 13 through the liquid inlet pipe 3. The flue gas rises in the heat exchange tank 1 through the heat exchange tube assembly 14 to exchange heat, so that the temperature of the heat storage liquid is raised and discharged through the liquid outlet pipe 31. At the same time, the heat exchange plates 32 on the outside of the liquid inlet pipe 3 and the liquid outlet pipe 31 exchange heat with the high temperature flue gas entering through the air inlet pipe 11 to realize the circulation, preheating and heat preservation of the heat storage liquid. The heat exchange plates 54 in the secondary heat exchange box 5 are used to perform secondary heat exchange on the flue gas discharged from the exhaust pipe 6. Water is introduced through the liquid inlet pipe 51, the liquid outlet pipe 52 and the liquid storage chamber 53 to heat domestic water or provide heating for the workshop.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A waste heat collection device for red brick firing, comprising a heat exchange tank (1), characterized in that: A gas outlet pipe (12) is fixedly connected to the top of the heat exchange tank (1), and a gas inlet pipe (11) is fixedly connected to the lower outer wall of the heat exchange tank (1). One end of the gas inlet pipe (11) is fixedly connected to a filter box (4). A heat exchange tube assembly (14) is fixedly connected to the inner wall of the heat exchange tank (1). A heat exchange tank (13) is provided on the outside of the heat exchange tube assembly (14). A liquid inlet pipe (3) is connected through the bottom surface of the heat exchange tank (1). The top end of the liquid inlet pipe (3) is connected to the inside of the heat exchange tank (13). A side of the liquid inlet pipe (3) is provided with... A liquid outlet pipe (31) is provided. The top end of the liquid outlet pipe (31) penetrates the bottom surface of the heat exchange tank (1) and communicates with the interior of the heat exchange tank (13). The outer walls of the liquid inlet pipe (3) and the liquid outlet pipe (31) are fixedly connected to heat exchange plates (32). The top end of the gas outlet pipe (12) is fixedly connected to a connecting pipe (2). One end of the connecting pipe (2) is fixedly connected to a flue pipe (6). The outer wall of the flue pipe (6) is fixedly fitted with a secondary heat exchange box (5). The inner wall of the middle part of the flue pipe (6) is fixedly connected to a heat exchange plate (54).

2. The waste heat collection device for red brick firing according to claim 1, characterized in that: Metal flexible connecting pieces (16) are fixedly connected to the outer walls of both ends of the heat exchange tube assembly (14), and a sealing partition (15) is fixedly connected to the inner wall of the heat exchange tank (1). The outer wall of the metal flexible connecting piece (16) is fixedly connected to the outer wall of the sealing partition (15).

3. The waste heat collection device for red brick firing according to claim 1, characterized in that: A maintenance plate (82) is fixedly connected to the center of the bottom surface of the heat exchange tank (1), and a connecting rod (7) is movably connected through the bottom surface of the maintenance plate (82).

4. The waste heat collection device for red brick firing according to claim 3, characterized in that: The top end of the connecting rod (7) is fixedly connected to the bottom surface of the heat exchange tube assembly (14), and a vibration motor (8) is fixedly installed at the bottom end of the connecting rod (7).

5. A waste heat collection device for red brick firing according to claim 4, characterized in that: A spring (81) is fixedly connected between the outer wall of the vibration motor (8) and the inspection plate (82), and the spring (81) is sleeved on the outer wall of the connecting rod (7).

6. The waste heat collection device for red brick firing according to claim 1, characterized in that: A temperature sensor (21) is installed through the outer wall of the connecting pipe (2). The bottom surface of the secondary heat exchange box (5) is fixedly connected to the liquid inlet pipe (51), the top surface of the secondary heat exchange box (5) is fixedly connected to the liquid outlet pipe (52), and the interior of the secondary heat exchange box (5) is provided with a liquid storage chamber (53).

7. The waste heat collection device for red brick firing according to claim 1, characterized in that: A connecting pipe 1 (41) is fixedly connected to one side of the outer wall of the filter box (4), and a connecting pipe 2 (42) is fixedly connected to the other side of the filter box (4). One end of the connecting pipe 2 (42) is fixedly connected to the air inlet pipe (11), and a filter plate module (43) is embedded in the top surface of the filter box (4).

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