Arch top waste heat recovery structure of glass kiln

Abstract

The utility model discloses an arch top waste heat recovery structure of a glass kiln, which comprises a heat storage chamber, and further comprises a first collecting mechanism which is positioned on the outer wall of the top of the heat storage chamber and comprises two secondary fans, two first gate valves and a second gate valve, a collecting cover is arranged on the outer wall of the top of the heat storage chamber, and the collecting cover is arranged on the outer wall of the top of the heat storage chamber. One end of the collecting cover is fixedly connected with a first branch pipe, and the end, away from the collecting cover, of the first branch pipe is fixedly connected with a secondary air pipe. The arch top waste heat recovery structure of the glass kiln has the advantages that heat energy is saved, heating time is shortened, secondary air is collected and utilized, waste of heat in the secondary air is avoided, the utilization rate of the secondary air and production efficiency of the kiln are improved, and energy consumption input of the kiln is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of glass kilns, in particular to a crown waste heat recovery structure of a glass kiln. Background Art

[0002] Glass is an amorphous inorganic non-metallic material. It is generally made of a variety of inorganic minerals such as quartz sand, borax, boric acid, barite, barium carbonate, limestone, feldspar and soda ash as the main raw materials, and a small amount of auxiliary raw materials. Its main components are silicon dioxide and other oxides. In the glass production process, the glass kiln is the most critical equipment. The glass raw materials need to be melted into glass liquid at high temperature inside the kiln and then go through steps such as clarification and molding to obtain glass products.

[0003] The patent document with application number 201821549903.5 discloses a glass kiln equipped with a waste heat recovery device, including a furnace body, the top of the furnace body is fixedly connected to a box body through supporting legs, and the bottom of the inner wall of the box body is fixedly connected to a distribution pipe through a fixing block, the top of the inner wall of the box body is fixedly connected to a collecting pipe through a fixing block, and a spiral heat exchange pipe is connected between the distribution pipe and the side opposite to the surface of the collecting pipe, and a spiral heat exchange pipe is connected between the distribution pipe and the side opposite to the surface of the collecting pipe.

[0004] However, traditional glass kilns mainly use natural air for combustion support, and the natural air is pumped into the heat storage chamber for heating through a fan. This not only increases the electric heat energy loss of the kiln, but also delays the production efficiency of the kiln due to the long heating time. In addition, the hot air on the top of the heat storage chamber is directly discharged, and the heat in the hot air is not utilized, resulting in a waste of hot air resources. Utility Model Content

[0005] The utility model discloses a waste heat recovery structure for the crown of a glass kiln, aiming to solve the technical problem that a traditional glass kiln mainly adopts natural air for combustion support, and the natural air is pumped into a heat storage chamber for heating by a fan, which not only increases the electric heat energy loss of the kiln, but also delays the production efficiency of the kiln due to the long heating time, and the hot air on the crown of the heat storage chamber is directly discharged, and the heat in the hot air is not utilized, resulting in a waste of hot air resources.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A waste heat recovery structure for a glass furnace, comprising a heat storage chamber and:

[0008] A first collecting mechanism: located on the top outer wall of the heat storage chamber, the first collecting mechanism includes two secondary fans, two first gate valves and a second gate valve, a collecting cover is provided on the top outer wall of the heat storage chamber, one end of the collecting cover is fixedly connected to a first branch pipe, one end of the first branch pipe away from the collecting cover is fixedly connected to a secondary air duct, one side outer wall of one of the secondary fans is fixedly connected to a second branch pipe, and the second branch pipe is communicated with the secondary air duct;

[0009] Second collecting mechanism: communicated with the first collecting mechanism;

[0010] Exchange mechanism: located at one side of the heat storage chamber.

[0011] The adoption of the above technical scheme can improve the utilization rate of secondary air, shorten the heating time, and improve the production efficiency of the kiln. Specifically, a first branch pipe for collecting hot air from the crown of the heat storage chamber is first added to the secondary air duct, and the first gate valve and the second gate valve are controlled to open. The secondary air on the crown of the heat storage chamber is sent into the secondary air duct through the collecting hood by a secondary fan, and then the secondary air will flow through the exchange mechanism, and then the exchange mechanism will be used to send the secondary air and the natural wind collected by the second collecting mechanism into the heat storage chamber. The natural wind will be heated by the grid body inside the heat storage chamber and then used. The collected secondary air can shorten the heating time, reduce the heating energy consumption of the kiln and be reused. The device saves heat energy, shortens the heating time, collects and utilizes the secondary air, avoids the waste of heat in the secondary air, improves the utilization rate of the secondary air, and reduces the energy consumption of the kiln.

[0012] In a preferred solution, a middle wall and a lattice body are provided inside the heat storage chamber, and the middle wall adopts a wind hole structure.

[0013] The lattice body is a mesh-shaped rectangle with pole ears on the top to gather current to heat the natural wind collected by the second collecting mechanism. Therefore, the temperature of the natural wind coming out of the wind hole can reach 400-500℃. The secondary air collected through the top of the kiln arch enters the heat storage chamber. Compared with the natural wind at room temperature entering the heat storage chamber and being heated by the lattice body, the kiln unit consumption can save about 1-2%.

[0014] In a preferred solution, the second collecting mechanism includes three flow meters and branch pipes, the three flow meters are equidistantly distributed inside the second branch pipe, the branch pipe is connected to the second branch pipe, one end of the branch pipe is fixedly connected to one side outer wall of one of the secondary fans, and one side outer wall of the secondary fan is fixedly connected to the circumferential outer wall of the exchange mechanism.

[0015] Traditional natural wind uses natural air. First, open the first gate valve, and send natural air from the secondary air inlet into the branch pipe and into the interior of the exchange mechanism through the secondary fan. According to the set flow rate, use the flow meter to intelligently control the wind force, and cooperate with the first collection mechanism to provide air for kiln combustion.

[0016] As can be seen from the above, a waste heat recovery structure of a glass furnace includes a heat storage chamber and also includes:

[0017] A first collecting mechanism: located on the top outer wall of the heat storage chamber, the first collecting mechanism includes two secondary fans, two first gate valves and a second gate valve, a collecting cover is provided on the top outer wall of the heat storage chamber, one end of the collecting cover is fixedly connected to a first branch pipe, one end of the first branch pipe away from the collecting cover is fixedly connected to a secondary air duct, one side outer wall of one of the secondary fans is fixedly connected to a second branch pipe, and the second branch pipe is communicated with the secondary air duct;

[0018] Second collecting mechanism: communicated with the first collecting mechanism;

[0019] The exchange mechanism is located on one side of the heat storage chamber. The waste heat recovery structure of the crown of the glass kiln provided by the utility model has the technical effect of saving heat energy, shortening the heating time, collecting and utilizing the secondary air, avoiding the waste of heat in the secondary air, improving the utilization rate of the secondary air and the production efficiency of the kiln, and reducing the energy consumption of the kiln. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a first collecting mechanism and an exchange mechanism of a waste heat recovery structure for a crown of a glass furnace proposed in the utility model.

[0021] Figure 2 The utility model provides a schematic diagram of the secondary air duct structure of the crown waste heat recovery structure of a glass furnace.

[0022] Figure 3 This is a schematic diagram of the second collecting mechanism structure of the crown waste heat recovery structure of a glass furnace proposed by the utility model.

[0023] In the attached figure: 1. exchanger; 2. secondary air inlet; 3. secondary fan; 4. secondary air duct; 5. first gate valve; 6. flow meter; 7. secondary air inlet; 8. hot air inlet; 9. collecting hood; 10. second branch pipe; 11. second gate valve; 12. third gate valve; 13. third branch pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application usually described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0025] The utility model discloses a waste heat recovery structure for the crown of a glass kiln, which is mainly used in traditional glass kilns that mainly use natural air for combustion support. The natural air is pumped into a heat storage chamber for heating through a fan, which not only increases the electric heat energy loss of the kiln, but also delays the production efficiency of the kiln due to the long heating time. In addition, the hot air on the crown of the heat storage chamber is directly discharged, and the heat in the hot air is not utilized, resulting in a waste of hot air resources.

[0026] Reference Figure 1 , Figure 2 and Figure 3 , a waste heat recovery structure of a glass furnace, comprising a heat storage chamber, and also comprising:

[0027] The first collecting mechanism is located on the top outer wall of the heat storage chamber. The first collecting mechanism includes two secondary fans 3, two first gate valves 5 and a second gate valve 11. A collecting cover 9 is provided on the top outer wall of the heat storage chamber. One end of the collecting cover 9 is fixedly connected to a first branch pipe. One end of the first branch pipe away from the collecting cover 9 is fixedly connected to a secondary air duct 4. One side outer wall of one of the secondary fans 3 is fixedly connected to a second branch pipe 10. The second branch pipe 10 is communicated with the secondary air duct 4.

[0028] Second collection mechanism: communicated with the first collection mechanism;

[0029] Exchange mechanism: located on one side of the heat storage chamber.

[0030] A hot air inlet 8 is provided inside the collecting cover 9 , and a first gate valve 5 and a second gate valve 11 are respectively located inside the second branch pipe 10 and inside the secondary air duct 4 .

[0031] In the specific implementation process, a middle wall and a lattice body are provided inside the heat storage chamber. The middle wall adopts a wind hole structure, and the lattice body is a meshed rectangular body with pole ears on the upper part to gather current to heat the natural wind collected by the second collecting mechanism. Therefore, the temperature of the natural wind coming out of the wind hole can reach 400-500°C. The secondary air collected through the top of the kiln arch enters the heat storage chamber. Compared with the natural wind at normal temperature entering the heat storage chamber and being heated by the lattice body, the kiln unit consumption can save about 1-2%.

[0032] Specifically, since the kiln combustion requires secondary air to provide it with combustion-supporting air, when in use, a first branch pipe for collecting hot air from the crown of the heat storage chamber is first added to the secondary air duct 4, and the first gate valve 5 and the second gate valve 11 are controlled to open, and the secondary air fan 3 is used to send the secondary air on the crown of the heat storage chamber into the secondary air duct 4 through the collecting hood 9, and then the secondary air will flow through the exchange mechanism, and then the exchange mechanism will be used to send the secondary air and the natural wind collected by the second collecting mechanism into the heat storage chamber together. The natural wind will be heated by the grid body inside the heat storage chamber and then used. The collected secondary air can shorten the heating time, reduce the heating energy consumption of the kiln and be reused. The device saves heat energy, shortens the heating time, collects and utilizes the secondary air, avoids the waste of heat in the secondary air, improves the utilization rate of the secondary air, and reduces the energy consumption of the kiln.

[0033] Reference Figure 1 and Figure 3 In a preferred embodiment, the second collecting mechanism includes three flow meters 6 and branch pipes. The three flow meters 6 are equidistantly distributed inside the second branch pipe 10. The branch pipe is connected to the second branch pipe 10. One end of the branch pipe is fixedly connected to the outer wall of one side of one of the secondary fans 3, and the outer wall of one side of the secondary fan 3 is fixedly connected to the circumferential outer wall of the exchange mechanism.

[0034] A secondary air inlet 7 is provided at one end of the second branch pipe 10, and a first gate valve 5 is located inside the branch pipe.

[0035] Specifically, the traditional secondary air uses natural air. First, open the first gate valve 5, and send the natural air from the secondary air inlet 7 into the branch pipe through the secondary air fan 3 and into the interior of the exchange mechanism. According to the set flow rate, use the flow meter 6 to intelligently control the wind force, and use it in conjunction with the first collecting mechanism to provide air for kiln combustion.

[0036] Reference Figure 1 , Figure 2 and Figure 3In a preferred embodiment, the exchange mechanism includes an exchanger 1, a third branch pipe 13 and two third gate valves 12. Two fourth branch pipes are provided on the outer wall of one side of the heat storage chamber. The exchanger 1 is located at one end of the fourth branch pipe. A secondary air inlet 2 is opened on the bottom outer wall of the exchanger 1. The two third gate valves 12 are both located inside the third branch pipe 13, and the third gate valves 12 and the secondary air inlet 2 are distributed alternately.

[0037] The second branch pipe 10 and the third branch pipe 13 are perpendicular to each other, and the two secondary fans 3 and the third branch pipe 13 are distributed on the same plane.

[0038] Specifically, when the secondary fan 3 pumps the secondary air and natural air to the third branch pipe 13, the third gate valve 12 is opened, and then enters the exchanger 1 through the secondary air inlet 2, the secondary hot air and natural air enter the heat storage chamber. The secondary air and the heated natural air provide air for the kiln combustion, increase the insulation effect, and realize the secondary air heat recovery.

[0039] Working principle: When in use, first add a first branch pipe to the secondary air duct 4 to collect hot air from the crown of the heat storage chamber, open the first gate valve 5 and the second gate valve 11 by controlling, use the secondary fan 3 to send the secondary air on the crown of the heat storage chamber into the secondary air duct 4 through the collecting hood 9, and then the secondary air will flow through the exchange mechanism, and then the exchange mechanism will be used to send the secondary air and the natural wind collected by the second collecting mechanism into the heat storage chamber, the natural wind will be heated by the grid body inside the heat storage chamber and then used, the collected secondary air can shorten the heating time, reduce the heating energy consumption of the kiln and be reused.

[0040] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. Equivalent replacement or change based on the technical solution of the utility model and its utility model concept should be included in the protection scope of the utility model.

Claims

1. A waste heat recovery structure for a glass furnace, comprising a heat storage chamber, characterized in that: Also includes: A first collecting mechanism: located on the top outer wall of the heat storage chamber, the first collecting mechanism comprising two secondary fans (3), two first gate valves (5) and a second gate valve (11); a collecting cover (9) is provided on the top outer wall of the heat storage chamber; one end of the collecting cover (9) is fixedly connected to a first branch pipe; one end of the first branch pipe away from the collecting cover (9) is fixedly connected to a secondary air duct (4); one side outer wall of one of the secondary fans (3) is fixedly connected to a second branch pipe (10); the second branch pipe (10) is in communication with the secondary air duct (4); Second collecting mechanism: communicated with the first collecting mechanism; Exchange mechanism: located at one side of the heat storage chamber.

2. The waste heat recovery structure of the crown of a glass furnace according to claim 1, characterized in that: A hot air inlet (8) is provided inside the collecting hood (9), wherein the first gate valve (5) and the second gate valve (11) are respectively located inside the second branch pipe (10) and inside the secondary air duct (4).

3. The waste heat recovery structure of the crown of a glass furnace according to claim 2, characterized in that: The heat storage chamber is provided with a middle wall and a lattice body inside, and the middle wall adopts a wind hole structure.

4. The waste heat recovery structure of the crown of a glass furnace according to claim 3, characterized in that: The second collecting mechanism comprises three flow meters (6) and branch pipes, the three flow meters (6) being equidistantly distributed inside the second branch pipe (10), the branch pipe being in communication with the second branch pipe (10), one end of the branch pipe being fixedly connected to an outer wall of one side of one of the secondary fans (3), and an outer wall of one side of the secondary fans (3) being fixedly connected to the circumferential outer wall of the exchange mechanism.

5. The waste heat recovery structure of the crown of a glass furnace according to claim 4, characterized in that: A secondary air inlet (7) is provided at one end of the second branch pipe (10), wherein one of the first gate valves (5) is located inside the branch pipe.

6. The waste heat recovery structure of the crown of a glass furnace according to claim 1, characterized in that: The exchange mechanism comprises an exchanger (1), a third branch pipe (13) and two third gate valves (12); two fourth branch pipes are provided on one side outer wall of the heat storage chamber; the exchanger (1) is located at one end of the fourth branch pipe; a secondary air inlet (2) is provided on the bottom outer wall of the exchanger (1); the two third gate valves (12) are both located inside the third branch pipe (13), and the third gate valves (12) and the secondary air inlet (2) are arranged alternately.

7. The waste heat recovery structure of the crown of a glass furnace according to claim 6, characterized in that: The second branch pipe (10) and the third branch pipe (13) are perpendicular to each other, and the two secondary fans (3) and the third branch pipe (13) are distributed on the same plane.

Images