Thermal spraying smoke dust recovery device

Abstract

The utility model discloses a thermal spraying smoke dust recovery device, which relates to the technical field of environmental protection equipment, and comprises a box body, a smoke dust treatment chamber and a gas treatment box, the smoke dust treatment chamber is arranged between the box body and the gas treatment box, one side of the box body is provided with a sealing door, a sample placing table is arranged in the box body, and the gas treatment box is provided with a gas outlet. A sample fixture is arranged on the upper side of the sample placing table, and the middle of the upper side of the box body is fixedly communicated with a smoke exhaust hood. Smoke dust is sucked into the separation pipe through the exhaust assembly, particles of the smoke are separated to purify gas under the action of the separation pipe, the purified gas is exhausted through the first exhaust pipe, the gas purified for the first time is exhausted into the purification liquid through the gas inlet pipe, harmful gas in the gas is purified for the second time, and the purification effect is good. And the gas after secondary purification is discharged into the air through the exhaust pipe II, so that the effects of solid-gas separation and gas purification of the flue gas generated by thermal spraying are achieved, and the purpose of environmental protection is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of environmental protection equipment, specifically a thermal spraying fume recovery device. Background Technology

[0002] The physical properties of thermal spraying dust are a key factor in assessing its hazards. Dust concentrations in thermal spraying work areas generally exceed the concentration limits stipulated by occupational health standards. The dust particle size distribution is wide, including a large number of micro and nano-sized dust particles. These ultrafine dust particles are lightweight and less affected by gravity, making them difficult to settle naturally and requiring longer removal cycles. This characteristic results in longer dust suspension time in the air, increasing the risk of dust exposure for workers.

[0003] Thermal spraying dust contains various metallic elements, including some heavy metals such as chromium, nickel, and copper. The presence of these metallic elements makes the dust potentially toxic. Heavy metals can enter the human body through the respiratory tract, and long-term accumulation can have serious effects on human health, including respiratory diseases and skin lesions. The physicochemical properties of thermal spraying dust determine the severity of its hazards. The high concentration of dust, its wide particle size distribution, and the presence of various metallic elements, especially heavy metals, all increase the health hazards of the dust to workers in the field. Utility Model Content

[0004] To address the aforementioned problems, specifically those raised in the background section, this utility model proposes a thermal spraying fume recovery device. The device includes a housing, a fume treatment chamber, and a gas treatment chamber. The fume treatment chamber is located between the housing and the gas treatment chamber. A sealed door is provided on one side of the housing. A sample placement platform is installed inside the housing, with a sample holder on its upper side. A fume hood is fixedly connected to the middle of the upper side of the housing. An exhaust assembly is installed inside the fume hood. One end of a flue gas pipe is fixedly connected to the upper end of the fume hood. The other end of the flue gas pipe is fixedly connected to and passes through the upper part of one side of the fume treatment chamber. A solid-gas separation structure is installed inside the fume treatment chamber. The fume treatment chamber and the gas treatment chamber are connected via an exhaust pipe.

[0005] The solid-gas separation structure includes a separation pipe, an exhaust pipe, and a dust collection hopper.

[0006] The separation pipe is located in the dust treatment chamber. The other end of the flue gas pipe is fixedly connected to the air inlet of the separation pipe. The upper end of the separation pipe is fixedly connected to the exhaust pipe. The upper end of the exhaust pipe is fixedly connected to and passes through the dust treatment chamber. The upper end of the exhaust pipe is fixedly connected to one end of the exhaust pipe. The separation pipe is composed of an upper cylinder and a lower cone. The lower end of the separation pipe is fixedly connected to the dust collection hopper. The dust collection hopper is fixedly connected to the bottom of the dust treatment chamber. The lower end of the dust collection hopper is fixedly connected to the separation pipe. The upper end of the dust collection hopper is a vortex hood.

[0007] A further feature of this invention is that: the other end of the exhaust pipe is fixedly connected to one upper end of the gas treatment box; the lower end of the exhaust pipe is fixedly connected to the air inlet pipe; the upper part of the other side of the gas treatment box is fixedly connected to the second exhaust pipe; the upper end of the gas treatment box is fixedly connected to the liquid inlet pipe; and the lower part of one side of the gas treatment box is fixedly connected to the liquid drain valve.

[0008] A further feature of this invention is that the lower end of the air inlet pipe is located at the bottom of the gas processing box.

[0009] A further feature of this invention is that the lower end of the dust treatment chamber is provided with a movable door.

[0010] A further feature of this invention is that the inner wall of the box is covered with heat insulation cotton, and a one-way ventilation valve is provided on one side of the box to maintain stable pressure inside the box and ensure safety during the spraying process.

[0011] A further feature of this invention is that a stable support is installed between the separation tube and the dust collection hopper.

[0012] A further feature of this invention is that the cylindrical body of the separation tube is spiral-shaped.

[0013] A further feature of this invention is that the sample clamp and the exhaust assembly are both common, well-known technologies (not shown in the figures).

[0014] The beneficial technical effects of this utility model are as follows: This utility model first draws the flue gas into the separation pipe through the exhaust assembly. The dust-laden flue gas enters from the inlet end of the separation pipe at a certain speed, and the airflow changes from linear motion to circular motion, forming an external swirling airflow. Under the action of centrifugal force, the particles are thrown towards the inner wall of the separation pipe and fall along the wall into the dust collection hopper under the action of gravity. The rotating and descending external swirling airflow continuously flows into the center during the descent, forming an internal swirling flow. Finally, the gas that has been separated and purified from the particles is discharged through exhaust pipe one. The gas purified in the first stage is discharged into the purification liquid through the air inlet pipe for secondary purification of harmful gases in the gas. The gas after secondary purification is discharged into the air through exhaust pipe two, achieving the effect of solid-gas separation and gas purification of the flue gas generated by thermal spraying, thus achieving the purpose of environmental protection. Attached Figure Description

[0015] Figure 1 The front view of this utility model is shown.

[0016] The attached diagram includes the following labels: 1. Sample placement platform; 2. Sample clamp; 3. Box body; 4. Fume hood; 5. Fume duct; 6. Dust treatment chamber; 7. Exhaust pipe one; 8. Exhaust duct; 9. Exhaust pipe two; 10. Gas treatment box; 11. Inlet pipe; 12. Dust collection hopper; 13. Separation pipe. Detailed Implementation

[0017] The following is a reference to the appendix. Figure 1 The preferred embodiments of this utility model are described below. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this utility model and are not intended to limit the scope of protection of this utility model.

[0018] This invention proposes a thermal spraying fume recovery device. When using this device, open the sealed door, fix the sample on the sample placement platform 1 using the sample clamp 2, close the sealed door, and pour an appropriate amount of purification liquid into the gas treatment box 10 (the purification liquid is below the exhaust pipe 9 and much higher than the lower end of the inlet pipe 11). At this time, the box 3 is sealed. During thermal spraying, start the exhaust assembly, and blow the flue gas tangentially into the separation pipe 13 through the fume hood 4 and the flue gas pipe 5. The flue gas first enters the cylindrical body of the separation pipe 13. Because the cylinder is spiral, the flue gas changes from linear motion to circular motion, forming an external swirling airflow. Under the action of centrifugal force, the particles are thrown towards the inner wall of the separation pipe 13. After contacting the inner wall, the particles lose inertia and fall along the wall of the separation pipe 13 into the dust collection hopper 1 under the action of gravity. Inside the 2nd chamber, the rotating and descending outer swirling airflow continuously flows towards the center during its descent, forming an inner swirling flow (a radial airflow towards the center, with the inner and outer swirling flows rotating in the same direction). Finally, the gas that has been separated and purified from the particles is discharged through exhaust pipe 7. The gas purified in the first stage enters the intake pipe 11 along the intake pipe 8. The gas after the first stage of purification is discharged into the purification liquid in the gas treatment box 10 through the intake pipe 11. The purification liquid performs secondary purification on the harmful gases in the gas. The gas after secondary purification is discharged into the air through exhaust pipe 9. This achieves the effect of solid-gas separation and gas purification of the fumes generated during the thermal spraying process, thus achieving the purpose of environmental protection. After purification, the device is stopped, the sealed door is opened to take out the processed sample, the movable door is opened to collect the particles in the dust collection hopper 12, and the waste liquid is discharged.

[0019] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0020] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model according to the specific circumstances.

[0022] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0023] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A thermal spraying fume recovery device, comprising a housing (3), a fume treatment chamber (6), and a gas treatment chamber (10), characterized in that: The dust treatment chamber (6) is located between the box body (3) and the gas treatment box (10). A sealed door is provided on one side of the box body (3). A sample placement platform (1) is installed inside the box body (3). A sample clamp (2) is provided on the upper side of the sample placement platform (1). The upper middle part of the box body (3) is fixedly connected to the exhaust hood (4). An exhaust assembly is installed inside the exhaust hood (4). One end of the flue gas pipe (5) is fixedly connected to the upper end of the exhaust hood (4). The other end of the flue gas pipe (5) is fixedly connected to and passes through the upper part of one side of the dust treatment chamber (6). A solid-gas separation structure is installed inside the dust treatment chamber (6). The dust treatment chamber (6) and the gas treatment box (10) are connected through an exhaust pipe (8). The solid-gas separation structure includes a separation pipe (13), an exhaust pipe (7), and a dust collection hopper (12). The separation pipe (13) is located inside the dust treatment chamber (6). The other end of the flue gas pipe (5) is fixedly connected to the air inlet of the separation pipe (13). The upper end of the separation pipe (13) is fixedly connected to the exhaust pipe (7). The upper end of the exhaust pipe (7) is fixedly connected to and passes through the dust treatment chamber (6). The upper end of the exhaust pipe (7) is fixedly connected to one end of the exhaust pipe (8). The separation pipe (13) is formed by connecting the upper cylinder and the lower cone. The lower end of the separation pipe (13) is fixedly connected to the dust collection hopper (12). The dust collection hopper (12) is fixedly connected to the bottom of the dust treatment chamber (6). The lower end of the dust collection hopper (12) is fixedly connected to the separation pipe (13). The upper end of the dust collection hopper (12) is a vortex hood.

2. The thermal spraying fume recovery device according to claim 1, characterized in that: The other end of the exhaust pipe (8) is fixedly connected to one end of the upper side of the gas treatment box (10), the lower end of the exhaust pipe (8) is fixedly connected to the air inlet pipe (11), the upper part of the other side of the gas treatment box (10) is fixedly connected to the exhaust pipe (9), the upper end of the gas treatment box (10) is fixedly connected to the liquid inlet pipe, and the lower part of one side of the gas treatment box (10) is fixedly connected to the liquid drain valve.

3. The thermal spraying fume recovery device according to claim 2, characterized in that: The lower end of the air inlet pipe (11) is located at the bottom of the gas processing box (10).

4. The thermal spraying fume recovery device according to claim 1, characterized in that: The lower end of the dust treatment chamber (6) is equipped with a movable door.

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