Small furnace branch flue structure of glass kiln

Abstract

The utility model discloses a branch flue structure of a small furnace of a glass kiln, which is characterized in that a smoke outlet at the lower part of a regenerative chamber fire bar of the glass kiln is communicated with a smoke inlet of the branch flue structure, and the branch flue structure comprises a bottom flue, a branch flue and an air assisting device, smoke inlets of the multiple bottom flues are communicated with smoke outlets in the lower portions of the regenerative chamber fire bars and correspond to the small furnaces one to one in position, the branch flues are provided with multiple necking parts, the smoke inlets of the multiple bottom flues are communicated with the necking parts one to one, and the air assisting equipment is communicated with the air inlet ends of the branch flues. When the air assisting equipment of the branch flue structure supplies air into the branch flue to accelerate flue gas flowing, the air flow forms a Venturi effect at the necking part, the flue gas in the bottom flue is sucked into the branch flue to promote flue gas discharge, and the branch flue structure can overcome the defect that the flue gas flows backwards into the bottom flue, so that the flue gas cannot flow backwards into the bottom flue. Smoke in the bottom flue can smoothly flow out and enter the branch flues, pressure stability of a glass kiln combustion system is guaranteed, and production quality of glass is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of the structure of the branch flue of a glass furnace, in particular to the structure of the branch flue of a forehearth of a glass furnace. Background Art

[0002] The 2mm series of photovoltaic glass has higher quality requirements for the original sheet. The quality of the original sheet is controlled by processes such as the furnace, the tin bath, and annealing. Especially in the melting stage of the furnace, the stability of the temperature in the furnace determines the clarification degree and the distribution of the material area after the raw materials are melted. Especially for the relatively thin 2mm photovoltaic glass, good combustion conditions in the furnace can significantly reduce the generation of glass nodules. The branch flue is an important structure for the exhaust of flue gas in the combustion system of a glass furnace. The combustion exhaust gas generated by each forehearth flows into the branch flue through its respective bottom flue for aggregation, and then the aggregated flue gas is subjected to waste heat utilization or purification treatment and evacuation.

[0003] At present, the phenomenon of flue gas backflow into the bottom flue often occurs when the branch flue is in use, seriously affecting the exhaust of flue gas in the bottom flue. When the flue gas cannot be discharged smoothly, it is bound to affect the combustion conditions in the furnace, resulting in incomplete combustion and ultimately reducing the production quality of the glass. After long-term observation, it is found that when multiple bottom flues exhaust gas into the branch flue, the total amount of flue gas in the branch flue gradually increases, that is, the pressure increases, causing the flue gas in the branch flue to form a backflow in the bottom flue along the flowing path, or hindering the outflow of the flue gas in the bottom flue, resulting in an imbalance in the pressure of the combustion system of the glass furnace and affecting glass production. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a structure of the branch flue of a forehearth of a glass furnace to solve the problem that the flue gas in the branch flue backflows into the bottom flue or hinders the outflow of the flue gas in the bottom flue, affecting glass production.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A structure of the branch flue of a forehearth of a glass furnace, the smoke outlet at the lower part of the regenerator grate of the glass furnace is communicated with the smoke inlet of the branch flue structure. The branch flue structure includes a bottom flue, a branch flue, and a air assisting device. The smoke inlets of a plurality of the bottom flues are communicated with the smoke outlet at the lower part of the regenerator grate and correspond to the positions of each forehearth one by one. The branch flue has a plurality of constriction parts, and the smoke inlets of the plurality of the bottom flues are communicated with the constriction parts one by one. The air assisting device is communicated with the air inlet end of the branch flue.

[0007] A further technical solution is that a plurality of one-way valves are arranged on the branch flue, and the one-way valves are located between two adjacent constriction parts.

[0008] A further technical solution is as follows: The one-way valve includes a guide rod, a conical piston, and a limiting member. The guide rod is coaxially installed in the branch flue. The conical piston is slidably installed on the guide rod. The conical surface of the conical piston is arranged opposite to the direction of flue gas flow. The limiting member is installed on the larger side surface of the conical piston, and an air passage is formed between the limiting member and the inner wall of the branch flue.

[0009] A further technical solution is as follows: A spring is installed on the guide rod to press against the larger side surface of the conical piston.

[0010] A further technical solution is as follows: The limiting member is a rod.

[0011] A further technical solution is as follows: The limiting member is a filter ring.

[0012] A further technical solution is as follows: The air assisting device is a blower.

[0013] Compared with the prior art, at least one of the following beneficial effects can be achieved by the present utility model:

[0014] The present utility model provides a structure of a side flue of a port of a glass furnace. When the air assisting device supplies air to the branch flue to accelerate the flow of flue gas, at the constriction, the air flow forms a Venturi effect, and the flue gas in the bottom flue is drawn into the branch flue, promoting the discharge of the flue gas. This branch flue structure can prevent the backflow of flue gas into the bottom flue, ensure the smooth outflow of the flue gas in the bottom flue into the branch flue, and ensure the pressure stability of the combustion system of the glass furnace, thus guaranteeing the production quality of the glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural view of a structure of a side flue of a port of a glass furnace according to the present utility model.

[0016] Figure 2 For the present utility model Figure 1 is a schematic structural view of the one-way valve.

[0017] Figure 3 For the present utility model Figure 2 is a schematic structural view of another one.

[0018] Reference numerals: 1, lower part of the regenerator grate; 2, branch flue structure; 3, bottom flue; 4, branch flue; 5, air assisting device; 6, one-way valve; 7, guide rod; 8, conical piston; 9, limiting member; 10, spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0021] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0022] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of this utility model is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Example 1:

[0026] As shown in this embodiment Figure 1 As shown, a structure of a branch flue of a glass furnace, the smoke outlet at the lower part 1 of the checkerwork of the regenerator of the glass furnace is communicated with the smoke inlet of the branch flue structure 2. The branch flue structure 2 includes a bottom flue 3, a branch flue 4 and an air assisting device 5. The smoke inlets of a plurality of bottom flues 3 are communicated with the smoke outlet at the lower part 1 of the checkerwork and correspond to the positions of each port one by one. A plurality of necking parts are provided on the branch flue 4, and the smoke inlets of the plurality of bottom flues 3 are communicated with the necking parts one by one. The air assisting device 5 is communicated with the air inlet end of the branch flue 4.

[0027] During smoke exhaust, first turn on the air assisting device 5 to supply air to form an air flow. When the air flow passes through the necking part of the branch flue 4, a Venturi effect is formed. When the flue gas at the lower part 1 of the checkerwork enters the bottom flue 3, the flue gas in the bottom flue 3 can be drawn into the branch flue 4 by means of the Venturi effect, promoting the discharge of the flue gas. This branch flue structure can overcome the backflow of the flue gas into the bottom flue, ensure the smooth outflow of the flue gas in the bottom flue into the branch flue, and ensure the pressure stability of the combustion system of the glass furnace, thus guaranteeing the quality of the glass products.

[0028] Preferably, a plurality of check valves 6 are provided on the branch flue 4, and the check valves 6 are located between two adjacent necking parts.

[0029] The check valve 6 can prevent the backflow of the flue gas into the bottom flue 3 and the air assisting device 5 when the Venturi effect fails, ensuring the smooth discharge of the flue gas and the safety of the equipment.

[0030] Embodiment Two:

[0031] On the basis of the above embodiment, as shown in this embodiment Figure 2 and Figure 3 As shown, the check valve 6 includes a guide rod 7, a conical piston 8 and a limiting member 9. The guide rod 7 is coaxially installed in the branch flue 4. The conical piston 8 is slidably installed on the guide rod 7. The conical surface of the conical piston 8 is arranged opposite to the direction of the flue gas flow. The limiting member 9 is installed on the larger side surface of the conical piston 8, and an air passing channel is formed between the limiting member 9 and the inner wall of the branch flue 4.

[0032] After the flue gas enters the branch flue 4, it pushes the conical piston 8 to move on the guide rod 7. The limiting member 9 abuts against the inner wall of the branch flue 4 to form an air passing channel, and the flue gas is discharged through the air passing channel. When the flue gas backflows, the conical piston 8 moves in the reverse direction, and the conical surface of the conical piston 8 abuts against the inner wall of the branch flue 4 to form a seal, preventing the backflow of the flue gas.

[0033] Preferably, a spring 10 that abuts against the larger side surface of the conical piston 8 is installed on the guide rod 7.

[0034] The spring 10 is used to improve the reset effect of the conical piston 8.

[0035] AsFigure 2 The limiting member 9 is a rod.

[0036] The rod is tightly pressed against the inner wall of the auxiliary flue 4 to form an air passage.

[0037] Such as Figure 3 The limiting member 9 is a filter ring.

[0038] The filter ring can perform a filtering function.

[0039] Preferably, the air assisting device 5 is a blower.

[0040] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A structure of the branch flue of a forehearth in a glass furnace, wherein the smoke outlet at the lower part (1) of the regenerator grate bars of the glass furnace is communicated with the smoke inlet of the branch flue structure (2), and is characterized in that: The branch flue structure (2) includes a bottom flue (3), a branch flue (4) and an air-assisted device (5). The smoke inlets of a plurality of the bottom flues (3) are communicated with the smoke outlets at the lower part of the regenerator grate bars (1) and correspond to the positions of each small furnace one by one. The branch flue (4) has a plurality of constricted parts, and the smoke inlets of the plurality of bottom flues (3) are communicated with the constricted parts one by one. The air-assisted device (5) is communicated with the air inlet end of the branch flue (4).

2. The structure of the side flue of the port of the glass furnace according to claim 1, characterized in that: A plurality of check valves (6) are arranged on the branch flue (4), and the check valves (6) are located between two adjacent constricted parts.

3. The structure of the small furnace branch flue of the glass furnace according to claim 2, characterized in that: The check valve (6) includes a guide rod (7), a conical piston (8) and a limiting member (9). The guide rod (7) is coaxially installed in the branch flue (4), the conical piston (8) is slidably installed on the guide rod (7), the conical surface of the conical piston (8) is arranged opposite to the smoke flow direction, the limiting member (9) is installed on the larger side surface of the conical piston (8), and an air passage is formed between the limiting member (9) and the inner wall of the branch flue (4).

4. The structure of the side flue of the port of the glass furnace according to claim 3, characterized in that: A spring (10) that abuts against the larger side surface of the conical piston (8) is installed on the guide rod (7).

5. The structure of the side flue of the port of the glass furnace according to claim 3, characterized in that: The limiting member (9) is a rod member.

6. The structure of the side flue of the forehearth of the glass furnace according to claim 3, wherein: The limiting member (9) is a filter ring.

7. The structure of the side flue of the forehearth of the glass furnace according to claim 1, characterized in that: The air-assisted device (5) is a blower.

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