Refractory brick tunnel kiln waste heat utilization equipment

Abstract

The utility model relates to the technical field of refractory brick tunnel kiln, and discloses a waste heat utilization device for a refractory brick tunnel kiln, including a heat recovery component and a preheating component, wherein the heat recovery component includes a kiln body, a recovery box is fixedly connected to the top of the kiln body, a heat storage box is fixedly connected to the top of the inner cavity of the recovery box, a blower is fixedly connected to the top of the recovery box, an air outlet on the right side of the blower is connected to a heat absorption pipe, and the end of the heat absorption pipe away from the blower passes through the inner cavity of the heat storage box. The beneficial effects achieved by the utility model are: the heat in the high-temperature flue gas is recovered and utilized by the heat recovery component, so that the heat is heated to heat the air entering the burner, and the normal temperature air is prevented from lowering its internal temperature after entering the burner, thereby increasing the fuel consumption; the partially recovered high-temperature air is directly transported to the preheating section of the kiln body through the preheating component to preheat the materials entering the kiln, further reducing the fuel consumption during the material roasting process, and improving the waste heat utilization rate of the tunnel kiln.

Description

Technical Field

[0001] The utility model relates to the technical field of refractory brick tunnel kilns, in particular to waste heat utilization equipment of refractory brick tunnel kilns. Background Art

[0002] The refractory brick tunnel kiln consists of a kiln body, a burner and an air delivery system. The kiln body is built with refractory bricks. The material is continuously fed into the kiln and passes through the preheating section, roasting section and cooling section in sequence to complete the roasting of the material.

[0003] However, the roasting temperature inside the tunnel kiln in the prior art is generally above 1000 degrees when it is working. The flue gas generated by the tunnel kiln has a high temperature when it is discharged. Direct discharge will cause serious waste of resources. The current method of recovering waste heat from the tunnel kiln is to send the high-temperature flue gas into the heat exchanger, heat the water with the high-temperature flue gas, and store and use the high-temperature water. The waste heat cannot be directly used by the tunnel kiln, and the waste heat utilization rate is low. For this reason, we propose a waste heat utilization device for a refractory brick tunnel kiln. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a waste heat utilization device for a refractory brick tunnel kiln, which solves the problem that the existing waste heat utilization device for a refractory brick tunnel kiln heats water through a heat exchanger, recovers waste heat by storing and using high-temperature water, cannot directly utilize waste heat in the tunnel kiln, and has a low waste heat recovery rate.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste heat utilization device for a refractory brick tunnel kiln, comprising a heat recovery component and a preheating component, wherein the heat recovery component comprises a kiln body, a recovery box is fixedly connected to the top of the kiln body, a heat storage box is fixedly connected to the top of the inner cavity of the recovery box, a blower is fixedly connected to the top of the recovery box, an air outlet on the right side of the blower is connected to a heat absorption pipe, and one end of the heat absorption pipe away from the blower penetrates into the inner cavity of the heat storage box, an exhaust fan is fixedly connected to the right side of the top of the kiln body, and the air outlet and air inlet on both sides of the exhaust fan are respectively connected to the kiln body and the recovery box, the front and rear sides of the heat storage box are both connected to a three-way metal hose, one end of the three-way metal hose away from the heat storage box penetrates into the inner cavity of the kiln body and is connected to a burner, the preheating component is arranged on the front and rear sides of the inner cavity of the kiln body, and comprises a hot air plate, the front and rear sides of the top of the kiln body are both fixedly connected to an adjusting mechanism, and the other end of the three-way metal hose away from the heat storage box penetrates the kiln body and is connected to the hot air plate.

[0008] As a preferred embodiment, the adjustment mechanism includes a control box, a first motor is fixedly connected to the right side of the control box, the left side of the output end of the first motor passes through the control box and is fixedly connected to a screw, the surface of the screw is sleeved with a threaded sleeve, the bottom of the threaded sleeve passes through the inner cavity of the kiln body and is fixedly connected to the hot air plate.

[0009] As a preferred solution, the left side of the screw is movably connected to the inner wall of the control box via a bearing, and the bottom of the control box and the top of the kiln body are both provided with movable openings for use with the threaded sleeve.

[0010] As a preferred solution, the kiln body comprises a feed door, a discharge door and a conveying track, the two sides of the kiln body are fixedly connected to the feed door and the discharge door respectively, and the bottom of the inner cavity of the kiln body is fixedly connected to the conveying track.

[0011] As a preferred solution, a heat conducting plate is fixedly connected to the bottom of the inner cavity of the recovery box, a heat conducting fin is arranged on the top of the heat conducting plate, and the bottom of the heat conducting fin penetrates into the inner cavity of the kiln body.

[0012] As a preferred solution, the bottom of the left side of the recovery box is connected to an exhaust pipe, and a control valve is sleeved on the surface of the exhaust pipe.

[0013] As a preferred solution, the top of the right side of the recovery box is connected to a second motor, the right side of the output end of the second motor penetrates into the inner cavity of the heat storage box and is fixedly connected with a stirring blade, and the inner cavity of the heat storage box is provided with heat storage body particles.

[0014] As a preferred solution, the heat storage box and the heat absorption tube are both made of copper, and the air inlet on the right side of the blower is connected to an air suction pipe.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the beneficial effects achieved by the utility model are: the heat in the high-temperature flue gas is recovered and utilized through the heat recovery component to heat the air entering the burner, thereby preventing the normal temperature air from lowering its internal temperature after entering the burner and increasing the fuel consumption; part of the recovered high-temperature air is directly transported to the kiln body preheating section through the preheating component to preheat the material entering the kiln, further reducing the fuel consumption during the material roasting process and improving the waste heat utilization rate of the tunnel kiln. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a partial cross-sectional view of the kiln body of the utility model;

[0019] Figure 3 It is a cross-sectional view of the recycling box of the utility model;

[0020] Figure 4 It is a cross-sectional view of the heat storage box of the present utility model.

[0021] In the figure: 1. heat recovery component; 101. kiln body; 102. recovery box; 103. heat storage box; 104. air blower; 105. heat absorption pipe; 106. exhaust fan; 107. three-way metal hose; 108. burner; 2. preheating component; 201. hot air plate; 202. adjustment mechanism; 2021. control box; 2022. first motor; 2023. screw; 2024. threaded sleeve; 1011. feed door; 1012. discharge door; 3. heat conduction plate; 4. second motor; 5. stirring blade. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Example 1

[0026] Reference Figure 1-4, which is the first embodiment of the utility model, and provides a waste heat utilization device for a refractory brick tunnel kiln, including a heat recovery component 1 and a preheating component 2. The heat recovery component 1 includes a kiln body 101, and a recovery box 102 is fixedly connected to the top of the kiln body 101. The recovery box 102 is located at the top of the roasting section of the kiln body 101. A heat storage box 103 is fixedly connected to the top of the inner cavity of the recovery box 102. The heat storage box 103 is not only used for storing heat storage body particles and heat, but also can divert high-temperature air. A blower 104 is fixedly connected to the top of the recovery box 102, and the air outlet on the right side of the blower 104 is connected to a heat absorption pipe 105. The heat absorption pipe 105 uses the good thermal conductivity of copper material to enable the air inside it to heat up quickly. The heat absorption pipe 105 is away from the blower 104. One end penetrates into the inner cavity of the heat storage box 103, and an exhaust fan 106 is fixedly connected to the right side of the top of the kiln body 101. The air outlet and air inlet on both sides of the exhaust fan 106 are connected to the kiln body 101 and the recovery box 102 respectively. The front and rear sides of the heat storage box 103 are connected with a three-way metal hose 107. The end of the three-way metal hose 107 away from the heat storage box 103 penetrates into the inner cavity of the kiln body 101 and is connected to the burner 108. The preheating component 2 is arranged on the front and rear sides of the inner cavity of the kiln body 101, including a hot air plate 201, which is in the preheating section of the kiln body 101. The front and rear sides of the top of the kiln body 101 are fixedly connected with an adjusting mechanism 202, and the other end of the three-way metal hose 107 away from the heat storage box 103 penetrates the kiln body 101 and is connected to the hot air plate 201.

[0027] Specifically: the heat in the high-temperature flue gas is recovered and utilized through the heat recovery component 1 to heat the air entering the burner 108, thereby preventing the normal temperature air from lowering its internal temperature after entering the burner 108 and increasing the fuel consumption; part of the recovered high-temperature air is directly transported to the preheating section of the kiln body 101 through the preheating component 2 to preheat the material entering the kiln, thereby further reducing the fuel consumption during the material roasting process and improving the waste heat utilization rate of the tunnel kiln.

[0028] Example 2

[0029] Reference Figure 1-4 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0030] The adjusting mechanism 202 includes a control box 2021, and a first motor 2022 is fixedly connected to the right side of the control box 2021. The left side of the output end of the first motor 2022 penetrates the control box 2021 and is fixedly connected to a screw 2023. The surface of the screw 2023 is sleeved with a threaded sleeve 2024. The bottom of the threaded sleeve 2024 penetrates the inner cavity of the kiln body 101 and is fixedly connected to the hot air plate 201.

[0031] Specifically: the screw rod 2023 can cooperate with the first motor 2022 to control the use position of the threaded sleeve 2024 and the hot air plate 201, so that the hot air plate 201 can move with the material to increase the preheating effect.

[0032] The left side of the screw rod 2023 is movably connected to the inner wall of the control box 2021 via a bearing, and the bottom of the control box 2021 and the top of the kiln body 101 are both provided with movable openings for use with the threaded sleeve 2024 .

[0033] Specifically: the bearing can improve the stability of the screw rod 2023 during rotation, and the movable opening can facilitate the use of the threaded sleeve 2024.

[0034] The kiln body 101 includes a feed door 1011, a discharge door 1012 and a conveying track. Both sides of the kiln body 101 are fixedly connected to the feed door 1011 and the discharge door 1012 respectively, and the bottom of the inner cavity of the kiln body 101 is fixedly connected to the conveying track.

[0035] Specifically: the material input and output of the kiln body 101 can be facilitated through the feed door 1011 and the discharge door 1012 , and the material can be smoothly input and output from the kiln body 101 through the conveying track.

[0036] Example 3

[0037] Reference Figure 1-4 , which is the third embodiment of the utility model, and this embodiment is based on the above two embodiments.

[0038] The bottom of the inner cavity of the recovery box 102 is fixedly connected with a heat conducting plate 3 , the top of the heat conducting plate 3 is provided with heat conducting fins, and the bottom of the heat conducting fins penetrates into the inner cavity of the kiln body 101 .

[0039] Specifically: part of the heat inside the kiln body 101 can enter the inner cavity of the recovery box 102 through the heat conducting plate 3 and the heat conducting fins, thereby improving the heat absorption effect of the heat absorbing pipe 105 and rapidly heating the air inside the heat absorbing pipe 105 .

[0040] The bottom of the left side of the recovery box 102 is connected to an exhaust pipe, and a control valve is sleeved on the surface of the exhaust pipe.

[0041] Specifically: the flue gas after heat recovery can be discharged from the recovery box 102 through the exhaust pipe, so that the flue gas enters the heat exchanger to continue to recover waste heat or is directly discharged into the flue gas treatment equipment. The opening and closing of the exhaust pipe can be controlled by the control valve.

[0042] The top of the right side of the recovery box 102 is connected to the second motor 4. The right side of the output end of the second motor 4 penetrates into the inner cavity of the heat storage box 103 and is fixedly connected with a stirring blade 5. The inner cavity of the heat storage box 103 is provided with heat storage body particles.

[0043] Specifically: the second motor 4 can cooperate with the stirring blade 5 to stir the heat storage body particles, so that when the air passes through the heat storage box 103, the contact area between the heat storage body particles and the air can be increased, so that the air is quickly heated up.

[0044] The heat storage box 103 and the heat absorption tube 105 are both made of copper, and the air inlet on the right side of the air supply fan 104 is connected to an air suction pipe.

[0045] Specifically: the heat storage box 103 and the heat absorption pipe 105 made of copper material can quickly conduct heat, and the air supply fan 104 can conveniently transport external air to the heat absorption pipe 105 through the air suction pipe.

[0046] The working principle of the utility model is as follows: the high-temperature flue gas generated by the kiln body 101 after the material is roasted is transported to the inner cavity of the recovery box 102 through the exhaust fan 106, the high-temperature flue gas heats the heat absorption pipe 105 and the heat storage box 103, and makes the heat storage body particles in the heat storage box 103 in a high-temperature state, the blower 104 is turned on, and the blower 104 transports the external air to the heat absorption pipe 105, the air in the heat absorption pipe 105 is quickly heated by the high-temperature flue gas, and the heated air enters the heat storage box 103 and mixes with the heat storage body. The contact between the particles increases the temperature of the air and turns it into high-temperature air. The high-temperature air enters the burner 108 through the three-way metal hose 107 to produce the combustion of the fuel, thereby preventing the normal temperature air from lowering the temperature in the combustion chamber and reducing the fuel consumption. At the same time, part of the high-temperature air enters the hot air plate 201 through the three-way metal hose 107, and the hot air plate 201 preheats the material entering the preheating section of the kiln body 101 to keep it in a high-temperature state, thereby reducing the fuel consumption in the roasting section of the kiln body 101 and improving the waste heat utilization effect of the tunnel kiln.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Refractory brick tunnel kiln waste heat utilization equipment, characterized by: The invention comprises a heat recovery component (1) and a preheating component (2), wherein the heat recovery component (1) comprises a kiln body (101), the top of the kiln body (101) is fixedly connected to a recovery box (102), the top of the inner cavity of the recovery box (102) is fixedly connected to a heat storage box (103), the top of the recovery box (102) is fixedly connected to a blower (104), the air outlet on the right side of the blower (104) is connected to a heat absorption pipe (105), the end of the heat absorption pipe (105) away from the blower (104) passes through the inner cavity of the heat storage box (103), the right side of the top of the kiln body (101) is fixedly connected to an exhaust fan (106), the air outlets on both sides of the exhaust fan (106) are connected to the heat absorption pipe (105), and the heat absorption pipe (105) is connected to the heat absorption pipe (105) at the end away from the blower (104) to the inner cavity of the heat storage box (103). and an air inlet are respectively connected to the kiln body (101) and the recovery box (102); the front side and the rear side of the heat storage box (103) are both connected to a three-way metal hose (107); one end of the three-way metal hose (107) away from the heat storage box (103) passes through the inner cavity of the kiln body (101) and is connected to a burner (108); the preheating component (2) is arranged on the front side and the rear side of the inner cavity of the kiln body (101), and comprises a hot air plate (201); the front side and the rear side of the top of the kiln body (101) are both fixedly connected to an adjustment mechanism (202); the other end of the three-way metal hose (107) away from the heat storage box (103) passes through the kiln body (101) and is connected to the hot air plate (201).

2. The refractory brick tunnel kiln waste heat utilization equipment according to claim 1 is characterized in that: The regulating mechanism (202) comprises a control box (2021), the right side of the control box (2021) is fixedly connected to a first motor (2022), the left side of the output end of the first motor (2022) passes through the control box (2021) and is fixedly connected to a screw rod (2023), the surface of the screw rod (2023) is sleeved with a threaded sleeve (2024), the bottom of the threaded sleeve (2024) passes through the inner cavity of the kiln body (101) and is fixedly connected to the hot air plate (201).

3. The refractory brick tunnel kiln waste heat utilization equipment according to claim 2 is characterized in that: The left side of the screw rod (2023) is movably connected to the inner wall of the control box (2021) via a bearing, and the bottom of the control box (2021) and the top of the kiln body (101) are both provided with movable openings for use with the threaded sleeve (2024).

4. The refractory brick tunnel kiln waste heat utilization equipment according to claim 1 is characterized in that: The kiln body (101) comprises a feed door (1011), a discharge door (1012) and a conveying track; two sides of the kiln body (101) are respectively fixedly connected to the feed door (1011) and the discharge door (1012); and the bottom of the inner cavity of the kiln body (101) is fixedly connected to the conveying track.

5. The refractory brick tunnel kiln waste heat utilization equipment according to claim 1 is characterized in that: A heat conducting plate (3) is fixedly connected to the bottom of the inner cavity of the recovery box (102), a heat conducting fin is arranged on the top of the heat conducting plate (3), and the bottom of the heat conducting fin penetrates into the inner cavity of the kiln body (101).

6. The waste heat utilization equipment of refractory brick tunnel kiln according to claim 1 is characterized in that: The bottom of the left side of the recovery box (102) is connected to an exhaust pipe, and a control valve is sleeved on the surface of the exhaust pipe.

7. The refractory brick tunnel kiln waste heat utilization equipment according to claim 1, characterized in that: The top of the right side of the recovery box (102) is connected to a second motor (4), the right side of the output end of the second motor (4) penetrates into the inner cavity of the heat storage box (103) and is fixedly connected to a stirring blade (5), and the inner cavity of the heat storage box (103) is provided with heat storage body particles.

8. The waste heat utilization equipment of refractory brick tunnel kiln according to claim 1 is characterized in that: The heat storage box (103) and the heat absorption pipe (105) are both made of copper material, and the air inlet on the right side of the air supply fan (104) is connected to an air suction pipe.

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