A casting mixing furnace exhaust device

Abstract

The utility model belongs to mixed furnace flue gas technology field, concretely relates to a cast mixed furnace flue gas device. Including the main pipe, the main pipe one end is fixed with the branch pipe, the branch pipe one end is fixed with the flue gas pipe, the flue gas pipe one end is set up and has the flue gas outlet, the flue gas pipe one end and the corresponding position of flue gas outlet installs the flue gas board, is set up and has a plurality of flue gas holes in the flue gas board, is installed on the flue gas board and is set up and has a plurality of flue gas holes, the flue gas passes through the flue gas hole and enters the flue gas pipe, the flue gas pipe is fixed with the flue gas cover at the position corresponding to the flue gas board, and the flue gas board is connected through the installation component between the flue gas pipe;The utility model connects the main pipe with the fan, and the fan generates negative pressure in the flue gas pipe through the main pipe and the branch pipe, the flue gas is sucked into the flue gas pipe through the flue gas outlet through a plurality of flue gas holes in the flue gas board, utilizes the high-speed airflow principle that flue gas hole is smaller in diameter, and the negative pressure is evenly distributed, has no trapping dead angle, can effectively prevent the flue gas from escaping from the furnace mouth, and the workshop environment improves significantly.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas exhaust technology for mixed furnaces, and specifically relates to a flue gas exhaust device for a casting mixed furnace. Background Technology

[0002] Metal casting is a process in which metal is melted into a liquid that meets certain requirements, poured into a mold, cooled and solidified, and then cleaned to obtain a casting with a predetermined shape, size, and properties. In the metal casting industry, the mixing furnace generates a large amount of high-temperature, corrosive fumes during the melting process.

[0003] Existing flue gas exhaust systems for casting mixing furnaces have one or two large rectangular exhaust ports on the furnace top, which are then used for negative pressure extraction via subsequent flues and induced draft fans. Due to the excessively large area of ​​the exhaust ports, the internal negative pressure distribution is extremely uneven, and the suction power is significantly reduced in areas far from the flue interface, creating airflow "dead zones." A large amount of flue gas is not effectively captured and instead escapes from gaps such as the charging port and observation window, seriously polluting the workshop environment. The usual solution for operators is to increase the power of the induced draft fan, but this leads to a sharp increase in energy consumption and increased operating noise. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a flue gas extraction device for a casting mixing furnace, which features high flue gas extraction efficiency and better energy-saving effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fume extraction device for a casting mixing furnace includes a main pipe, a branch pipe fixed to one end of the main pipe, a fume extraction pipe fixed to one end of the branch pipe, a fume extraction port on one side of the fume extraction pipe, a fume extraction plate installed on the fume extraction port, and a plurality of fume extraction holes opened on the fume extraction plate. The flue gas enters the fume extraction pipe through the fume extraction holes. In addition, a fume extraction hood is fixed on the fume extraction pipe at a position corresponding to the fume extraction plate.

[0007] The smoke exhaust plate and the smoke exhaust pipe are connected by an installation assembly, which includes an installation plate. The smoke exhaust plate has installation plates at both ends, and the installation plates are connected to the smoke exhaust pipe by installation bolts. One end of the smoke exhaust pipe has an installation hole corresponding to the installation bolt.

[0008] Preferably, a regulating valve is installed on the side of the branch pipe near the main pipe, and the regulating valve is a butterfly valve.

[0009] Preferably, the side of the smoke exhaust hole has an arc-shaped structure, and the smoke exhaust holes are equidistantly distributed.

[0010] Preferably, both the smoke hood and the smoke exhaust plate are made of stainless steel, and the smoke hood and the smoke exhaust pipe, as well as the smoke exhaust pipe and the branch pipe, are fixed by welding.

[0011] Preferably, the mounting assembly further includes two longitudinal insert plates and two transverse insert plates, which are arranged opposite each other and located around the exhaust plate. One end of the exhaust pipe has a longitudinal groove and a transverse groove corresponding to the longitudinal insert plates and the transverse insert plates at the position corresponding to the exhaust port.

[0012] Preferably, the mounting plate has through holes corresponding to the mounting bolts, and after the longitudinal insert plate and the transverse insert plate are inserted into the longitudinal groove and the transverse groove, the sides of the longitudinal insert plate and the transverse insert plate are in contact with the inner walls of the longitudinal groove and the transverse groove.

[0013] The beneficial effects of this utility model are as follows:

[0014] In general, the mixing furnace generates a large amount of high-temperature, corrosive flue gas during the smelting process. This invention connects the main pipe to the fan, and the fan creates negative pressure in the exhaust pipe through the main pipe and branch pipes. The flue gas is drawn into the exhaust pipe through several exhaust holes in the exhaust plate. Utilizing the principle of high-speed airflow with small diameter exhaust holes, the negative pressure is evenly distributed with no dead spots, effectively preventing flue gas from escaping from the furnace opening and significantly improving the workshop environment. At the same time, the high efficiency of the capture capacity allows for the use of a smaller power fan with the same effect, resulting in greater energy savings. When the flue gas volume is large during the melting period, the valve is opened wider by adjusting the valve, and when the flue gas volume is small during the heat preservation period, the valve is closed smaller by adjusting the valve, and the fan speed is reduced, thereby significantly reducing the fan energy consumption while ensuring the exhaust effect.

[0015] In addition, this utility model also includes an installation component. Specifically, when installing the smoke exhaust plate, the smoke exhaust plate is attached to one side of the smoke exhaust pipe, corresponding to the position of the smoke exhaust port. The installation bolts are then passed through the installation plate and screwed into the installation holes to achieve the effect of limiting and fixing the installation plate and the smoke exhaust plate. The installation component facilitates the disassembly and cleaning of the smoke exhaust plate, preventing the smoke exhaust holes from becoming clogged after prolonged use and affecting the smoke exhaust effect. During installation, the longitudinal and transverse inserts at one end of the smoke exhaust plate are respectively inserted into the longitudinal and transverse grooves at one end of the smoke exhaust pipe, thereby ensuring the sealing between the smoke exhaust plate and the smoke exhaust pipe and preventing smoke leakage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a bottom-view perspective view of the present invention;

[0019] Figure 3 This is a perspective view of the smoke exhaust plate of this utility model during installation;

[0020] Figure 4 This utility model Figure 3 Enlarged view of point A;

[0021] Figure 5 This is a perspective view of the smoke exhaust plate of this utility model;

[0022] In the diagram: 1. Main pipe; 2. Regulating valve; 3. Branch pipe; 4. Exhaust pipe; 5. Exhaust hood; 6. Exhaust plate; 7. Exhaust hole; 8. Exhaust outlet; 9. Mounting assembly; 91. Mounting plate; 92. Mounting bolt; 93. Mounting hole; 94. Longitudinal groove; 95. Transverse groove; 96. Longitudinal insert plate; 97. Transverse insert plate. Detailed Implementation

[0023] 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.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, 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 limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] In this technical solution, such as Figure 1-5As shown, a casting mixing furnace exhaust device includes a main pipe 1, a branch pipe 3 fixed to one end of the main pipe 1, an exhaust pipe 4 fixed to one end of the branch pipe 3, an exhaust port 8 opened on one side of the exhaust pipe 4, an exhaust plate 6 installed on the exhaust port 8, and a plurality of exhaust holes 7 opened on the exhaust plate 6, through which flue gas enters the exhaust pipe 4. On this basis, an exhaust hood 5 is fixed on the exhaust pipe 4 at a position corresponding to the exhaust plate 6.

[0026] Specifically, a regulating valve 2 is installed on the side of branch pipe 3 near the main pipe 1. The regulating valve 2 is a butterfly valve.

[0027] By adopting the above technical solution, when the amount of flue gas is large during the melting period, the valve 2 is opened wider, and when the amount of flue gas is small during the heat preservation period, the valve 2 is closed smaller, and the fan operation speed is reduced, thereby significantly reducing the fan energy consumption while ensuring the smoke exhaust effect.

[0028] Specifically, the side of the smoke exhaust hole 7 has an arc-shaped structure, and several smoke exhaust holes 7 are distributed at equal intervals.

[0029] By adopting the above technical solution, the side of the smoke exhaust hole 7 is arc-shaped to reduce wind resistance and improve the smoke exhaust effect.

[0030] Specifically, both the smoke hood 5 and the smoke exhaust plate 6 are made of stainless steel, and the smoke hood 5 and the smoke exhaust pipe 4, as well as the smoke exhaust pipe 4 and the branch pipe 3, are fixed by welding.

[0031] By adopting the above technical solution, the stainless steel structure is more robust, and the welding fixation makes the connection between the smoke hood 5 and the smoke pipe 4, as well as between the smoke pipe 4 and the branch pipe 3, more secure.

[0032] Specifically, the smoke exhaust plate 6 and the smoke exhaust pipe 4 are connected by the mounting component 9;

[0033] The mounting component 9 includes a mounting plate 91. The smoke exhaust plate 6 has mounting plates 91 at both ends. The mounting plates 91 are connected to the smoke exhaust pipe 4 by mounting bolts 92. One end of the smoke exhaust pipe 4 has a mounting hole 93 corresponding to the mounting bolt 92.

[0034] By adopting the above technical solution, when installing the smoke exhaust plate 6, the smoke exhaust plate 6 is attached to one side of the smoke exhaust pipe 4, corresponding to the position of the smoke exhaust port 8. The mounting bolt 92 is passed through the mounting plate 91 and screwed into the mounting hole 93, so as to achieve the effect of limiting and fixing the mounting plate 91 and the smoke exhaust plate 6. The installation component 9 is set to facilitate the disassembly and cleaning of the smoke exhaust plate 6, and to prevent the smoke exhaust hole 7 from becoming blocked after long-term use of the smoke exhaust plate 6, which would affect the smoke exhaust effect.

[0035] Specifically, the mounting component 9 also includes two longitudinal insert plates 96 and two transverse insert plates 97. The two longitudinal insert plates 96 and two transverse insert plates 97 are arranged opposite each other and are located around the smoke exhaust plate 6. One end of the smoke exhaust pipe 4 is provided with a longitudinal groove 94 and a transverse groove 95 corresponding to the longitudinal insert plates 96 and the transverse insert plates 97 at the position corresponding to the smoke exhaust port 8.

[0036] By adopting the above technical solution, when the smoke exhaust plate 6 is installed, the longitudinal insert plate 96 and the transverse insert plate 97 at one end of the smoke exhaust plate 6 are respectively inserted into the longitudinal groove 94 and the transverse groove 95 at one end of the smoke exhaust pipe 4, thereby ensuring the sealing between the smoke exhaust plate 6 and the smoke exhaust pipe 4 and preventing smoke leakage.

[0037] Specifically, the mounting plate 91 has through holes corresponding to the mounting bolts 92. After the longitudinal insert plate 96 and the transverse insert plate 97 are inserted into the longitudinal groove 94 and the transverse groove 95, the sides of the longitudinal insert plate 96 and the transverse insert plate 97 are in contact with the inner walls of the longitudinal groove 94 and the transverse groove 95.

[0038] By adopting the above technical solution, the mounting bolt 92 can pass through the mounting plate 91 and be screwed into the mounting hole 93. After the longitudinal insert plate 96 and the transverse insert plate 97 are inserted into the longitudinal groove 94 and the transverse groove 95, the sides of the longitudinal insert plate 96 and the transverse insert plate 97 are in better contact with the inner wall of the longitudinal groove 94 and the transverse groove 95, resulting in a better sealing effect.

[0039] The working principle and usage process of this utility model: When using the flue gas exhaust device for a casting mixing furnace, the device is installed in a suitable position. During the melting process, the mixing furnace generates a large amount of high-temperature, corrosive flue gas. The main pipe 1 is connected to a fan. The fan creates negative pressure in the exhaust pipe 4 through the main pipe 1 and the branch pipe 3. The flue gas is drawn into the exhaust pipe 4 through several exhaust holes 7 in the exhaust plate 6 and exhaust ports 8. Utilizing the principle of high-speed airflow with a small diameter exhaust holes 7, the negative pressure is evenly distributed with no dead zones, effectively preventing flue gas from escaping from the furnace opening. The workshop environment is significantly improved. At the same time, the high efficiency of the collection capacity allows for the use of a smaller power fan with the same effect, resulting in greater energy savings. When the flue gas volume is large during the melting period, the valve is opened wider by regulating valve 2. When the flue gas volume is small during the heat preservation period, the valve is opened wider by regulating valve 2. The regulating valve 2 is closed slightly, and the fan's operating force is reduced, thereby significantly reducing the fan's energy consumption while ensuring the smoke extraction effect. When installing the smoke exhaust plate 6, it is attached to one side of the smoke exhaust pipe 4, corresponding to the position of the smoke exhaust port 8. The mounting bolt 92 is passed through the mounting plate 91 and screwed into the mounting hole 93 to achieve the effect of limiting and fixing the mounting plate 91 and the smoke exhaust plate 6. The installation component 9 is set to facilitate the disassembly and cleaning of the smoke exhaust plate 6, and to prevent the smoke exhaust port 7 from becoming blocked after long-term use of the smoke exhaust plate 6, which would affect the smoke extraction effect. When installing the smoke exhaust plate 6, the longitudinal insert plate 96 and the transverse insert plate 97 at one end of the smoke exhaust plate 6 are respectively inserted into the longitudinal groove 94 and the transverse groove 95 at one end of the smoke exhaust pipe 4, thereby ensuring the sealing between the smoke exhaust plate 6 and the smoke exhaust pipe 4 and preventing smoke leakage.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flue gas exhaust device for a casting mixing furnace, comprising a main pipe, characterized in that: One end of the main pipe is fixed with a branch pipe, and one end of the branch pipe is fixed with a smoke exhaust pipe. A smoke exhaust port is opened on one side of the smoke exhaust pipe, and a smoke exhaust plate is installed on the smoke exhaust port. Several smoke exhaust holes are opened on the smoke exhaust plate. Smoke enters the smoke exhaust pipe through the smoke exhaust holes. On this basis, a smoke exhaust hood is fixed on the smoke exhaust pipe at a position corresponding to the smoke exhaust plate. The smoke exhaust plate and the smoke exhaust pipe are connected by an installation assembly, which includes an installation plate. The smoke exhaust plate has installation plates at both ends, and the installation plates are connected to the smoke exhaust pipe by installation bolts. One end of the smoke exhaust pipe has an installation hole corresponding to the installation bolt.

2. The fume extraction device for a casting mixing furnace according to claim 1, characterized in that: A regulating valve is installed on the side of the branch pipe closest to the main pipe, and the regulating valve is a butterfly valve.

3. The fume extraction device for a casting mixing furnace according to claim 1, characterized in that: The side of the smoke exhaust hole has an arc-shaped structure, and several smoke exhaust holes are evenly distributed.

4. The fume extraction device for a casting mixing furnace according to claim 1, characterized in that: Both the smoke hood and the smoke exhaust plate are made of stainless steel, and the smoke hood and the smoke exhaust pipe, as well as the smoke exhaust pipe and the branch pipe, are fixed by welding.

5. The fume extraction device for a casting mixing furnace according to claim 1, characterized in that: The installation assembly also includes two longitudinal insert plates and two transverse insert plates, which are arranged opposite each other and located around the smoke exhaust plate. One end of the smoke exhaust pipe has a longitudinal groove and a transverse groove corresponding to the longitudinal insert plates and the transverse insert plates at the position corresponding to the smoke exhaust port.

6. The fume extraction device for a casting mixing furnace according to claim 5, characterized in that: The mounting plate has through holes corresponding to the mounting bolts. After the longitudinal insert plate and the transverse insert plate are inserted into the longitudinal groove and the transverse groove, the sides of the longitudinal insert plate and the transverse insert plate are in contact with the inner wall of the longitudinal groove and the transverse groove.

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