Air supply mechanism for a combustion furnace

Abstract

The utility model discloses a kind of combustion furnace gas feeding mechanism, including preheating shell, the side of preheating shell is connected with air inlet pipe, one end of the other side of preheating shell is connected with connecting pipe, the other end of connecting pipe is connected with the air inlet of air draught fan, the air outlet of air draught fan is connected with combustion furnace by gas conveying pipe;Preheating shell is installed with multiple heating wires, liftable filter frame is installed on preheating shell and passes through, and detachable filter screen is installed in filter frame, the bottom of filter frame is installed with baffle.The combustion furnace gas feeding mechanism is provided with filter frame, when filtering, filter screen filters gas, when filter screen needs to be cleaned, by the lifting of filter frame, so that baffle is aligned with preheating shell, avoid air entering into preheating shell when cleaning filter screen, filter frame is lifted from preheating shell with filter screen, and the magnetic metal plate on filter screen can be separated from magnetic block, and then the disassembly of filter screen is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of gas supply mechanism, specifically a gas supply mechanism for a combustion furnace. Background Technology

[0002] When a biomass combustion furnace is working, it requires external gas supply to improve the combustion effect and avoid incomplete combustion that could lead to changes in the products. Since the internal combustion state is at a high temperature, directly supplying low-temperature gas would affect the combustion effect. Therefore, the gas entering the equipment is heated during the gas supply process.

[0003] In existing technical solutions, it is easy to think of filtering the gas in gas heating equipment to prevent impurities in the gas from affecting the combustion effect in subsequent reactions. However, existing technical solutions rarely replace the filter structure. After long-term use, a lot of dust will adhere to the filter equipment, which will affect the filtration effect. Therefore, existing technologies need to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a gas supply mechanism for a combustion furnace to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combustion furnace gas supply mechanism, including a preheating shell, One side of the preheating shell is connected to an air inlet pipe, and the other side of the preheating shell is connected to one end of a connecting pipe. The other end of the connecting pipe is connected to the air inlet of the induced draft fan, and the air outlet of the induced draft fan is connected to the combustion furnace through a gas delivery pipe. Multiple heating wires are installed inside the preheating shell. A liftable filter frame is installed through the preheating shell, and a removable filter screen is installed inside the filter frame. A baffle is installed at the bottom of the filter frame.

[0006] By adopting the above technical solution, during use, the external gas is drawn into the preheating shell through the air inlet pipe by the suction generated by the induced draft fan, and then filtered through the filter screen. After being heated by the heating wire, the filtered gas enters the induced draft fan through the connecting pipe and is discharged into the combustion furnace through the gas delivery pipe, thus achieving the effect of heating and filtering the air.

[0007] As a further embodiment of this utility model: a laterally movable limiting pin is installed on the side wall of the preheating shell, a reset groove is provided on one side of the limiting pin in the preheating shell, and a reset spring is installed in the reset groove. A toggle plate is installed on the side wall of the limiting pin and the toggle plate is located in the reset groove. The reset spring is connected to the toggle plate.

[0008] By adopting the above technical solution, during use, the limiting pins are inserted into the filter frame and baffle at different times to fix the filter frame or baffle in the preheating shell, thereby preventing gaps from entering the preheating shell and affecting the cleanliness of the gas.

[0009] As a further embodiment of this utility model, both the filter frame and the baffle are provided with pin holes that match the limiting pins.

[0010] By adopting the above technical solution, during use, the filter frame or baffle is fixed in the preheating shell by inserting the limiting pin into the pin hole.

[0011] As a further embodiment of this utility model: magnetic blocks are provided at the top and bottom of the filter frame, and magnetic metal plates are provided at the top and bottom of the filter screen.

[0012] By adopting the above technical solution, during use, the filter screen is locked into the filter frame by the attraction between the magnetic metal plate and the magnetic block, which facilitates the replacement of the filter screen.

[0013] As a further embodiment of this invention, the height of the baffle is the same as the height of the preheating shell.

[0014] By adopting the above technical solution, when the filter screen is replaced or cleaned, the baffle blocks the gap between the filter frame and the preheating shell to prevent gas from entering.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the gas supply mechanism of the combustion furnace, Equipped with a filter frame, the filter screen filters the gas during filtration. When the filter screen needs to be cleaned, the filter frame is raised so that the baffle is aligned with the preheating shell, preventing air from entering the preheating shell during cleaning. The filter frame, along with the filter screen, rises from the preheating shell, and the magnetic metal plate on the filter screen can be separated from the magnetic block, thus facilitating the removal of the filter screen. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0017] In the diagram: 1. Preheating shell; 101. Heating wire; 102. Reset groove; 2. Air inlet pipe; 3. Connecting pipe; 4. Exhaust fan; 5. Air delivery pipe; 6. Filter frame; 601. Filter screen; 602. Baffle; 603. Magnetic metal plate; 604. Magnetic block; 7. Limit pin; 701. Actuating plate; 8. Reset spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a gas supply mechanism for a combustion furnace, including a preheating shell 1. One side of the preheating shell 1 is connected to an air inlet pipe 2, and the other side of the preheating shell 1 is connected to one end of a connecting pipe 3. The other end of the connecting pipe 3 is connected to the air inlet of the induced draft fan 4, and the air outlet of the induced draft fan 4 is connected to the combustion furnace through a gas delivery pipe 5. Multiple heating wires 101 are installed inside the preheating housing 1. A liftable filter frame 6 is installed through the preheating housing 1, and a removable filter screen 601 is installed inside the filter frame 6. A baffle 602 is installed at the bottom of the filter frame 6.

[0020] Please see Figure 3 Furthermore, a laterally movable limiting pin 7 is installed on the side wall of the preheating shell 1. A reset groove 102 is provided inside the preheating shell 1 on one side of the limiting pin 7, and a reset spring 8 is installed in the reset groove 102. A toggle plate 701 is installed on the side wall of the limiting pin 7 and is located in the reset groove 102. The reset spring 8 is connected to the toggle plate 701.

[0021] Please see Figure 2 and Figure 3 Furthermore, both the filter frame 6 and the baffle 602 are provided with pin holes that match the limiting pin 7.

[0022] Please see Figure 3 Furthermore, magnetic blocks 604 are provided at the top and bottom of the filter frame 6, and magnetic metal plates 603 are provided at the top and bottom of the filter screen 601. Specifically, the top of the filter frame 6 is equipped with a handle for easy lifting.

[0023] Please see Figure 2 Furthermore, the height of the baffle 602 is the same as the height of the preheating shell 1.

[0024] Working principle: When using the gas supply mechanism of this combustion furnace, the external gas is drawn into the preheating shell 1 through the air inlet pipe 2 by the suction generated by the induced draft fan 4. The gas is filtered by the filter screen 601. After being heated by the heating wire 101, the gas enters the induced draft fan 4 through the connecting pipe 3 and is discharged into the combustion furnace through the gas delivery pipe 5, thus achieving the effect of heating and filtering the air. When the filter screen 601 needs to be cleaned, the filter frame 6 is raised so that the baffle 602 is aligned with the preheating shell 1, preventing air from entering the preheating shell 1 when cleaning the filter screen 601. The filter frame 6 lifts the filter screen 601 from the preheating shell 1, and the magnetic metal plate 603 on the filter screen 601 can be separated from the magnetic block 604, which facilitates the disassembly of the filter screen 601. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0026] Although the present invention 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gas supply mechanism for a combustion furnace, comprising a preheating shell (1), characterized in that: One side of the preheating shell (1) is connected to an air inlet pipe (2), and the other side of the preheating shell (1) is connected to one end of a connecting pipe (3). The other end of the connecting pipe (3) is connected to the air inlet of the induced draft fan (4), and the air outlet of the induced draft fan (4) is connected to the combustion furnace through an air supply pipe (5). The preheating shell (1) is equipped with multiple heating wires (101), and a liftable filter frame (6) is installed through the preheating shell (1). A detachable filter screen (601) is installed inside the filter frame (6), and a baffle (602) is installed at the bottom of the filter frame (6).

2. The combustion furnace gas supply mechanism according to claim 1, characterized in that: A laterally movable limiting pin (7) is installed on the side wall of the preheating shell (1). A reset groove (102) is provided in the preheating shell (1) on one side of the limiting pin (7), and a reset spring (8) is installed in the reset groove (102). A toggle plate (701) is installed on the side wall of the limiting pin (7) and the toggle plate (701) is located in the reset groove (102). The reset spring (8) is connected to the toggle plate (701).

3. The combustion furnace gas supply mechanism according to claim 2, characterized in that: Both the filter frame (6) and the baffle (602) are provided with pin holes that match the limiting pin (7).

4. The combustion furnace gas supply mechanism according to claim 1, characterized in that: The top and bottom of the filter frame (6) are provided with magnetic blocks (604), and the top and bottom of the filter screen (601) are provided with magnetic metal plates (603).

5. The combustion furnace gas supply mechanism according to claim 1, characterized in that: The height of the baffle (602) is the same as the height of the preheating shell (1).

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