Smoke collecting device for combustion in preparation of low-smoke halogen-free polyolefin material

Abstract

The utility model relates to the technical field of low-smoke halogen-free polyolefin material preparation, and discloses a smoke collecting device for combustion in low-smoke halogen-free polyolefin material preparation. The smoke collecting device for low-smoke halogen-free polyolefin material preparation and combustion comprises a supporting frame, a connecting ring is fixedly installed at the top end of the supporting frame, a smoke collecting hood is fixedly installed in the connecting ring, and a fixing ring is fixedly installed in the smoke collecting hood; air enters the exhaust fume collecting hood through the space between the tooth-shaped protrusions on the outer side of the fixing ring, so that airflow flowing into the exhaust fume collecting hood is formed at the outer edge of the flow guide hood, the flow guide hood can guide smoke to move towards the outer edge of the flow guide hood, and when the smoke moves to the edge of the flow guide hood, the smoke enters the exhaust fume collecting hood under the driving of the airflow; and the tubular bulge at the bottom end of the exhaust fume collecting hood can prevent the smoke from diffusing, so that high-flow-speed airflow which is annularly distributed can be formed at the outer edge of the flow guide hood, and the smoke is prevented from diffusing.

Description

Technical Field

[0001] This utility model relates to the field of low-smoke halogen-free polyolefin material preparation technology, specifically to a smoke collection device for combustion in the preparation of low-smoke halogen-free polyolefin materials. Background Technology

[0002] Low-smoke halogen-free polyolefins are a new type of polymer material. Due to their advantages such as being halogen-free, low-smoke, and flame-retardant, they are widely used in construction, power, communications, and aerospace industries. They can effectively reduce the incidence of fire accidents and protect people's lives and property.

[0003] The existing Chinese utility model patent with publication number CN215310846U discloses a welding fume collection device, relating to the field of fume treatment technology. Specifically, it includes a fixed base plate, a support shaft inserted into the upper surface of the fixed base plate, a placement plate fixedly connected to the top of the support shaft, an mounting plate fixedly connected to the upper surface of the placement plate, a servo motor fixedly connected to one side of the mounting plate, a transmission shaft inserted into the other side of the mounting plate, the output end of the servo motor fixedly connected to the transmission shaft, a rotating rod fixedly connected to the outer surface of the transmission shaft, and a fixed shaft fixedly connected to one side of the mounting plate. Through the coordinated arrangement of the servo motor, rotating rod, transmission rod, slider, fixed rod, arc plate, and compression spring, the fume absorber can swing left and right and rotate during use, thereby absorbing fume from different positions and directions, achieving functional diversification and improved fume collection efficiency.

[0004] Smoke contains a certain amount of solid particles. During the smoke collection process, these solid particles will enter the air pump with the airflow, causing wear on the internal parts of the air pump. At the same time, existing smoke collection devices generally place the funnel-shaped air inlet directly above the ignition point to restrict the position of the smoke. Due to the influence of the air inlet pipe diameter, the gas flow rate is limited and the area covered by the airflow is small, resulting in some smoke escaping and failing to be collected by the device under the influence of the airflow. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a smoke collection device for the combustion of low-smoke halogen-free polyolefin materials, which has advantages such as preventing solid particles in the smoke from entering the air pump and improving the collection effect, thus solving the aforementioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a smoke collection device for combustion in the preparation of low-smoke halogen-free polyolefin materials, comprising: a support frame, a connecting ring fixedly installed at the top of the support frame, a smoke collection hood fixedly installed inside the connecting ring, a fixing ring fixedly installed inside the smoke collection hood, a flow guide fixedly installed inside the fixing ring, a connecting pipe inserted through the top of the smoke collection hood, a water tank fixedly installed at the front end of the connecting pipe, a metal mesh fixedly installed inside the water tank, a drain valve fixedly installed at the bottom of the water tank, a top cover movably installed at the top of the water tank, an air inlet pipe inserted through the center of the top cover, an air pump fixedly installed above the top cover, and a fixing frame fixedly installed on the outside of the water tank; the connecting ring facilitates the installation of the smoke collection hood at the top of the support frame.

[0009] As a preferred embodiment of this utility model, the support frame is symmetrically installed below the connecting ring with the center of the connecting ring as the reference. The smoke hood has a conical structure, and the outer diameter of the upper end of the smoke hood is smaller than the outer diameter of the lower end. The smoke hood is fixed to the top of the support frame by the connecting ring, and a vertical tubular structure is provided at the bottom of the smoke hood. The support frame can support the connecting ring.

[0010] As a preferred embodiment of this utility model, the outer side of the fixing ring is provided with a toothed structure, and the end of the toothed structure on the outer side of the fixing ring is fixedly connected to the top of the inner wall of the vertical tubular structure of the smoke collection hood. The guide hood is a conical structure, and the outer diameter of the top end of the guide hood is larger than that of the bottom end. The fixing ring facilitates the entry of smoke into the interior of the smoke collection hood.

[0011] As a preferred embodiment of this utility model, the flow guide is fixedly connected to the smoke collection hood via a fixing ring, and the top of the flow guide is located inside the tubular protrusion structure at the bottom of the smoke collection hood; the flow guide can guide the smoke to the edge of the smoke collection hood.

[0012] As a preferred embodiment of this utility model, the water tank is connected to the smoke collection hood via a connecting pipe, and the bottom of the water tank has a conical structure; the connecting pipe facilitates the entry of smoke from inside the smoke collection hood into the water tank.

[0013] As a preferred embodiment of this utility model, the metal mesh is installed vertically and equidistantly inside the water tank, and the installation position of the metal mesh is higher than the connection between the water tank and the connecting pipe. The aperture of the upper metal mesh inside the water tank is smaller than the aperture of the lower metal mesh. The water tank can hold water used to adsorb solid particles in smoke.

[0014] As a preferred technical solution of this utility model, the top cover is movably connected to the water tank through a threaded structure, the air inlet pipe penetrates vertically through the top cover, and the air inlet end of the air pump is connected to the inner cavity of the water tank through the air inlet pipe; the air inlet pipe facilitates the air pump to extract the air above the liquid surface inside the water tank.

[0015] Compared with the prior art, this utility model provides a smoke collection device for combustion in the preparation of low-smoke halogen-free polyolefin materials, which has the following beneficial effects:

[0016] 1. This utility model features a fixing ring with a toothed structure on its outer side. The end of the toothed structure on the outer side of the fixing ring is fixedly connected to the top of the inner wall of the vertical tubular structure of the smoke collection hood. The guide hood has a conical structure, with the outer diameter of the top end being larger than that of the bottom end. The guide hood is fixedly connected to the smoke collection hood via the fixing ring, and the top end of the guide hood is located inside the tubular protrusion at the bottom end of the smoke collection hood. After the air pump is started, it will draw out the air above the liquid surface inside the water tank through the air inlet pipe, reducing the air pressure above the liquid surface inside the water tank, thereby allowing the air inside the smoke collection hood to... Under the influence of air pressure difference, the smoke enters the water tank through the connecting pipe. At the same time, external air will enter the smoke collection hood through the space between the toothed protrusions on the outside of the fixed ring. This creates an airflow at the outer edge of the guide hood that flows towards the inside of the smoke collection hood. The guide hood can guide the smoke to move to the outer edge of the guide hood. When the smoke moves to the edge of the guide hood, it will enter the inside of the smoke collection hood under the influence of the airflow. The tubular protrusion at the bottom of the smoke collection hood can prevent the smoke from spreading. This method can create a high-velocity airflow in a ring at the outer edge of the guide hood to prevent the smoke from spreading.

[0017] 2. This utility model, through the design of the water tank, requires that the liquid level inside the tank be maintained between the metal mesh and the top cover during use. This prevents water used to adsorb solid particles from entering the air pump. The air pump is connected to the inner cavity of the water tank through an air inlet pipe. The smoke will enter the connecting pipe and move into the water tank under the influence of the airflow inside the smoke collection hood. Since the density of gas is much lower than that of water, the smoke will rise to the top of the liquid surface inside the water tank in the form of bubbles. It will be separated and dispersed by metal meshes with different pore sizes, thereby improving the adsorption effect of water on solid particles in the smoke. This prevents solid particles in the smoke from entering the air pump and causing wear on the internal parts of the air pump. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the smoke collection hood of this utility model;

[0020] Figure 3 This is a schematic diagram of the metal mesh installation structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the top cover installation structure of this utility model;

[0022] The components are: 1. Support frame; 11. Connecting ring; 12. Smoke hood; 13. Fixing ring; 14. Flow guide; 15. Connecting pipe; 16. Water tank; 17. Metal mesh; 18. Drain valve; 19. Top cover; 110. Air inlet pipe; 111. Air pump; 112. Fixing frame. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1 - Figure 4 In this embodiment, a smoke collection device for combustion of low-smoke halogen-free polyolefin materials includes: a support frame 1, a connecting ring 11 fixedly installed at the top of the support frame 1, a smoke collection hood 12 fixedly installed inside the connecting ring 11, a fixing ring 13 fixedly installed inside the smoke collection hood 12, a flow guide hood 14 fixedly installed inside the fixing ring 13, a connecting pipe 15 inserted through the top of the smoke collection hood 12, a water tank 16 fixedly installed at the front end of the connecting pipe 15, a metal mesh 17 fixedly installed inside the water tank 16, a drain valve 18 fixedly installed at the bottom of the water tank 16, a top cover 19 movably installed at the top of the water tank 16, an air inlet pipe 110 inserted through the center of the top cover 19, an air pump 111 fixedly installed above the top cover 19, and a fixing frame 112 fixedly installed on the outside of the water tank 16.

[0027] The support frame 1 is symmetrically installed below the connecting ring 11 with the center of the connecting ring 11 as the reference. The smoke hood 12 has a conical structure, and the outer diameter of the upper end of the smoke hood 12 is smaller than the outer diameter of the lower end. The smoke hood 12 is fixed to the top of the support frame 1 by the connecting ring 11. The bottom end of the smoke hood 12 is provided with a vertical tubular structure. The outer side of the fixing ring 13 is provided with a toothed structure. The end of the toothed structure on the outer side of the fixing ring 13 is fixedly connected to the top of the inner wall of the vertical tubular structure of the smoke hood 12. The guide hood 14 has a conical structure, and the outer diameter of the top end of the guide hood 14 is larger than that of the bottom end. The guide hood 14 is fixedly connected to the smoke hood 12 by the fixing ring 13. The top of the deflector 14 is located inside the tubular protrusion at the bottom of the smoke hood 12. The water tank 16 is connected to the smoke hood 12 through the connecting pipe 15. The bottom of the water tank 16 is a conical structure. The metal mesh 17 is installed vertically and equidistantly inside the water tank 16. The installation position of the metal mesh 17 is higher than the connection between the water tank 16 and the connecting pipe 15. The aperture of the upper metal mesh 17 inside the water tank 16 is smaller than the aperture of the lower metal mesh 17. The top cover 19 is connected to the water tank 16 through a threaded structure. The air inlet pipe 110 passes vertically through the top cover 19. The air inlet end of the air pump 111 is connected to the inner cavity of the water tank 16 through the air inlet pipe 110.

[0028] Specifically, the air pump 111 is model RB-52S-1. The support frame 1 can raise the position of the connecting ring 11 so that the smoke hood 12 can be positioned directly above the ignition point. The top of the smoke hood 12 is connected to the water tank 16 via the connecting pipe 15. During use, it is necessary to ensure that the liquid level inside the water tank 16 is between the metal mesh 17 and the top cover 19 above the water tank 16 to prevent water used to adsorb solid particles from entering the air pump 111. The air pump 111 is connected to the inner cavity of the water tank 16 via the air inlet pipe 110. After the air pump 111 is started, it will draw out the air above the liquid level inside the water tank 16 through the air inlet pipe 110, reducing the air pressure above the liquid level inside the water tank 16. As a result, the air inside the smoke hood 12 enters the water tank 16 through the connecting pipe 15 under the influence of the air pressure difference. At the same time, the outside air will... The smoke enters the smoke collection hood 12 through the space between the toothed protrusions on the outer side of the fixing ring 13, thereby forming an airflow towards the smoke collection hood 12 at the outer edge of the guide hood 14. The guide hood 14 can guide the smoke to move to the outer edge of the guide hood 14. When the smoke moves to the edge of the guide hood 14, it will enter the smoke collection hood 12 under the action of the airflow. The tubular protrusion at the bottom of the smoke collection hood 12 can prevent the smoke from spreading. The smoke will enter the connecting pipe 15 and move into the water tank 16 under the action of the airflow inside the smoke collection hood 12. Since the gas density is much lower than that of water, the smoke will float to the top of the liquid surface inside the water tank 16 in the form of bubbles. It will be separated and dispersed by the metal mesh 17 with different pore sizes to improve the adsorption effect of water on solid particles in the smoke. The fixing frame 112 can support the water tank 16.

[0029] In use, the outer side of the fixing ring 13 is provided with a toothed structure. The end of the toothed structure on the outer side of the fixing ring 13 is fixedly connected to the top of the inner wall of the vertical tubular structure of the smoke hood 12. The guide hood 14 has a conical structure, and the outer diameter of the top end of the guide hood 14 is larger than that of the bottom end. The guide hood 14 is fixedly connected to the smoke hood 12 through the fixing ring 13. The top end of the guide hood 14 is located inside the tubular protrusion at the bottom end of the smoke hood 12. After the air pump 111 is started, it will draw out the air above the liquid surface inside the water tank 16 through the air inlet pipe 110, thereby reducing the air pressure above the liquid surface inside the water tank 16. As a result, the air inside the smoke hood 12 enters the water tank 16 through the connecting pipe 15 under the influence of the air pressure difference. At the same time, the outside air will enter the smoke hood 12 through the space between the toothed protrusions on the outer side of the fixing ring 13, thereby forming an airflow towards the inside of the smoke hood 12 at the outer edge of the guide hood 14. The guide hood 14 can guide the smoke to move to the outer edge of the guide hood 14. When the smoke moves to the guide hood 14, When the smoke reaches the edge of the flow hood 14, it will enter the smoke collection hood 12 under the influence of the airflow. The tubular protrusion at the bottom of the smoke collection hood 12 can prevent the smoke from spreading. This method can form a high-velocity airflow in a ring at the outer edge of the flow hood 14 to prevent the smoke from spreading. When using it, it is necessary to ensure that the liquid level inside the water tank 16 is between the metal mesh 17 and the top cover 19 above the water tank 16 to prevent the water used to adsorb solid particles from entering the air pump 111. The air pump 111 is connected to the inner cavity of the water tank 16 through the air inlet pipe 110. The smoke will enter the connecting pipe 15 and move into the water tank 16 under the influence of the airflow inside the smoke collection hood 12. Since the gas density is much lower than that of water, the smoke will float to the top of the liquid level inside the water tank 16 in the form of bubbles. It will be separated and dispersed by the metal mesh 17 with different apertures to improve the adsorption effect of water on solid particles in the smoke, thereby preventing solid particles in the smoke from entering the air pump 111 and causing wear on the internal parts of the air pump 111.

[0030] 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 low-smoke halogen-free polyolefin composition for preparing a smoke collecting device for combustion, characterized by, The utility model relates to a low smoke halogen -free polyolefin preparation combustion smoke collection device, including: Support frame (1), the top end of support frame (1) is fixedly installed with connecting ring (11), the inside of connecting ring (11) is fixedly installed with smoke hood (12), the inside of smoke hood (12) is fixedly installed with fixed ring (13), the inside of fixed ring (13) is fixedly installed with fairing (14), the top end of smoke hood (12) is inserted and is installed with connecting pipe (15), the front end of connecting pipe (15) is fixedly installed with water tank (16), the inside of water tank (16) is fixedly installed with metal screen (17), the bottom of water tank (16) is fixedly installed with blowdown valve (18), the top of water tank (16) is movably installed with top cover (19), the center of top cover (19) is inserted and is installed with air inlet pipe (110), the top of top cover (19) is fixedly installed with air pump (111), the outside of water tank (16) is fixedly installed with fixed frame (112).

2. The low smoke halogen-free polyolefin preparation combustion smoke collection device according to claim 1, wherein: The support frame (1) is symmetrically installed below the connecting ring (11) with the center of the connecting ring (11) as a reference, the smoke hood (12) is in a conical structure, the outer diameter of the upper end of the smoke hood (12) is smaller than that of the lower end, the smoke hood (12) is fixed to the top end of the support frame (1) through the connecting ring (11), and the bottom end of the smoke hood (12) is provided with a vertical tubular structure.

3. The low smoke halogen-free polyolefin preparation combustion smoke collection device according to claim 1, wherein: The outer side of the fixed ring (13) is provided with a tooth-shaped structure, the end of the tooth-shaped structure on the outer side of the fixed ring (13) is fixedly connected with the top of the inner wall of the vertical tubular structure of the smoke hood (12), and the fairing (14) is in a conical structure, and the outer diameter of the top end of the fairing (14) is larger than that of the bottom end.

4. The low smoke halogen-free polyolefin preparation combustion smoke collection device according to claim 1, wherein: The fairing (14) is fixedly connected with the smoke hood (12) through the fixed ring (13), and the top end of the fairing (14) is located in the inside of the tubular protruding structure at the bottom end of the smoke hood (12).

5. The low smoke halogen-free polyolefin preparation combustion smoke collection device according to claim 1, wherein: The water tank (16) is communicated with the smoke hood (12) through the connecting pipe (15), and the bottom end of the water tank (16) is in a conical structure.

6. The low smoke halogen-free polyolefin preparation combustion smoke collection device according to claim 1, wherein: The metal screen (17) is vertically and equidistantly installed in the inside of the water tank (16), the installation position of the metal screen (17) is higher than the connection between the water tank (16) and the connecting pipe (15), the pore diameter of the metal screen (17) at the upper part in the inside of the water tank (16) is smaller than that of the metal screen (17) at the lower part.

7. The low smoke halogen-free polyolefin preparation combustion smoke collection device according to claim 1, wherein: The top cover (19) is movably connected with the water tank (16) through a threaded structure, and the air inlet pipe (110) vertically penetrates the top cover (19), and the air inlet end of the air pump (111) is communicated with the inner cavity of the water tank (16) through the air inlet pipe (110).

Images