A fume exhaust device

Abstract

The utility model discloses an oil fume discharge device, including an exhaust pipe and a demister, wherein one end of the exhaust pipe is used to be connected to an oil tank through a fan, and the other end of the exhaust pipe is provided with a bent pipe structure with an end inclined upward, and the demister is provided at the end of the bent pipe structure, and can filter the oil fume and then discharge it. The structure of the utility model is novel and reasonable. By providing a bent pipe structure with an end inclined upward at the end of the exhaust pipe, and providing a demister capable of filtering the oil fume and then discharging it, the smoke can be first filtered through the demister to remove the oil mist, and then the clean smoke can be discharged, so as to avoid the oil mist being directly discharged into the air with the smoke and polluting the atmosphere; at the same time, the bent pipe structure is inclined upward, which can effectively avoid the oil mist in the exhaust pipe being directly discharged through the end of the exhaust pipe and falling to the ground to pollute the environment, and the end of the bent pipe structure is inclined upward, which is conducive to the oil mist falling back into the exhaust pipe quickly through the bent pipe structure, thereby improving the recovery effect of the oil mist.

Description

Technical Field

[0001] The utility model relates to the technical field of oil fume discharge, in particular to an oil fume discharge device. Background Art

[0002] Each generator of the sulfuric acid business of the phosphate fertilizer manufacturing center is equipped with an oil station system. The oil of the oil station system flows into the oil system of the generator through the oil pump, and the oil pressure and lubrication oil pressure are circulated to ensure the stability of the oil pressure. During the oil circulation process, the oil temperature will increase due to friction problems. The oil temperature can be controlled at 35℃-45℃ through cooling water heat exchange. However, a small amount of oil smoke is still generated in this oil temperature range, so a smoke exhaust fan and smoke exhaust pipe are set up on the top of the oil tank to extract this part of the oil smoke into the atmosphere through negative pressure.

[0003] However, if Figure 1 As shown, the existing exhaust pipe 1 directly discharges the oil smoke into the air, and the oil mist (oil droplets) in the oil smoke will cause certain pollution to the atmosphere. At the same time, the existing exhaust pipe 1 is a straight pipe and is set at a 90° angle to the wall. The oil mist (oil droplets) collected in the exhaust pipe 1 will directly drip to the ground through the end of the exhaust pipe 1, causing certain pollution to the environment. Utility Model Content

[0004] The utility model aims to provide a novel oil fume exhaust device to solve the problem of direct exhaust of oil fume and oil mist dripping on the ground, which may cause air and environmental pollution in the above-mentioned existing oil fume exhaust technology.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides an oil fume exhaust device, comprising:

[0007] A smoke exhaust pipe, one end of which is connected to the oil tank via a fan, and the other end of which is provided with a curved pipe structure with the end thereof tilted upward;

[0008] The demister is arranged at the end of the curved pipe structure. The demister can filter out the oil mist from the oil smoke before discharging it. The oil mist filtered out by the demister can fall back into the curved pipe structure under the action of gravity.

[0009] Preferably, the end of the curved tube structure is bent vertically upward.

[0010] Preferably, the curved pipe structure and the smoke exhaust pipe are integrally formed.

[0011] Preferably, the demister is a wire mesh demister.

[0012] Preferably, the metal wire mesh demister is a stainless steel wire mesh demister with a mesh size of 192 or more.

[0013] Preferably, it also includes a rain cap, which is arranged at the end of the curved pipe structure, and the rain cap and the curved pipe structure are spaced apart so that the oil smoke emitted by the smoke exhaust pipe is discharged laterally through the space between the rain cap and the curved pipe structure.

[0014] Preferably, the smoke exhaust pipe is provided with an oil accumulation groove on a bottom side wall close to the curved pipe structure, and the oil accumulation groove is used to accumulate oil mist falling back into the curved pipe structure.

[0015] Preferably, the oil accumulation groove is an arc-shaped groove.

[0016] Preferably, an agitator is further provided at the bottom of the oil accumulation groove, and the agitator is used to stir the oil in the oil accumulation groove to prevent oil accumulation in the oil accumulation groove.

[0017] Preferably, a reflux pipe is also connected to the bottom of the oil accumulation groove, and the reflux pipe is used to recover the oil in the oil accumulation groove.

[0018] Compared with the prior art, the utility model has achieved the following technical effects:

[0019] The utility model discloses an oil fume exhaust device, which has a novel and reasonable structure. A bent pipe structure with an upwardly inclined end is provided at the end of the exhaust pipe, and a demister capable of filtering oil mist from the oil fume is provided at the end of the bent pipe structure. The oil mist of the smoke can be filtered out by the demister first, and then the clean smoke can be discharged, so as to avoid the oil mist being directly discharged into the air with the smoke to pollute the atmosphere; at the same time, the bent pipe structure is inclined upward, which can effectively avoid the oil mist in the exhaust pipe being directly discharged through the end of the exhaust pipe and falling to the ground to pollute the environment, and the end of the bent pipe structure is inclined upward, which is conducive to the oil mist quickly falling back into the exhaust pipe through the bent pipe structure, thereby improving the recovery effect of the oil mist. The utility model solves the problem that during the oil circulation process of steam turbines, generators, etc., the oil droplets in the oil fume are directly discharged into the atmosphere or dripped on the ground to pollute the environment.

[0020] In some technical solutions disclosed in the utility model, a rain cap is also provided in the oil fume exhaust device, and the rain cap can prevent rainwater from falling into the exhaust pipe.

[0021] In some technical solutions disclosed in the utility model, an oil accumulation groove is also provided on the bottom side wall of the smoke exhaust pipe near the elbow structure, which is used to accumulate the oil mist falling back into the elbow structure to facilitate the recovery of the oil mist. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of an existing oil fume exhaust system;

[0024] Figure 2 This is a schematic diagram of the structure of the oil fume exhaust device disclosed in an embodiment of the utility model.

[0025] In the figure, the reference numerals are:

[0026] 100. Fume exhaust device;

[0027] 1. Exhaust pipe; 11. Bend pipe structure; 12. Oil accumulation groove;

[0028] 2. Fan;

[0029] 3. Fuel tank;

[0030] 4. Defogger;

[0031] 5. Flange;

[0032] 6. Rain hat;

[0033] 7. Agitator;

[0034] 8. Reflux pipe. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] The utility model aims to provide a novel oil fume exhaust device to solve the problem of direct exhaust of oil fume and oil mist dripping on the ground, which may cause air and environmental pollution in the existing oil fume exhaust technology.

[0037] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] Embodiment 1

[0039] like Figure 2 As shown, this embodiment proposes an oil fume exhaust device 100, including an exhaust pipe 1 and a demister 4, wherein one end of the exhaust pipe 1 is used to be connected to the oil tank 3 through the fan 2, and the other end of the exhaust pipe 1 is provided with a bent pipe structure 11 with an end inclined upward, and the demister 4 is arranged at the end of the bent pipe structure 11. The demister 4 can filter the oil mist from the oil fume before discharging it, and the oil mist filtered out by the demister 4 can fall back into the bent pipe structure 11 under the action of gravity. The bent pipe structure 11 is inclined upward, which can effectively prevent the oil mist in the exhaust pipe 1 from being directly discharged through the end of the exhaust pipe 1 and falling to the ground to pollute the environment.

[0040] In this embodiment, the end of the curved tube structure 11 is preferably bent vertically upward. Figure 2 As shown, the end of the elbow structure 11 is perpendicular to the smoke exhaust pipe 1, which can prevent the oil mist from being directly discharged and further ensure that the oil mist falls vertically back into the smoke exhaust pipe 1 through the elbow structure 11, thereby ensuring the oil mist reflux effect.

[0041] In this embodiment, the bent pipe structure 11 can be connected to the end of the smoke exhaust pipe 1 through a pipe clamp structure, etc., can be welded to the end of the smoke exhaust pipe 1, or can be directly integrally formed with the smoke exhaust pipe 1, which can be set specifically according to actual conditions.

[0042] In this embodiment, the aforementioned demister 4 is preferably a metal mesh demister, which is composed of a mesh of fine metal wires. The fine mesh can effectively intercept the oil mist droplets in the oil smoke. As time accumulates, the droplets gradually accumulate and eventually drop due to gravity. The above-mentioned metal mesh demister is preferably a stainless steel mesh demister with a mesh size of 192 or more. The material of the stainless steel mesh demister can be specifically 304 stainless steel.

[0043] In this embodiment, the demister 4 can be specifically arranged inside the end of the curved pipe structure 11, or can be arranged outside the end of the curved pipe structure 11. Figure 2 As shown, in this embodiment, the demister 4 is preferably arranged outside the end of the curved pipe structure 11. Specifically: a flange 5 is provided at the end of the curved pipe structure 11, and the demister 4 is connected and installed above the flange 5. When oil smoke is discharged in the curved pipe structure 11, it first passes through the demister 4. The oil mist droplets in the oil smoke collide and gather when passing through the wire mesh of the demister 4, and flow back into the exhaust pipe 1 by gravity.

[0044] The above-mentioned oil fume exhaust device 100 is essentially an oil fume exhaust device with oil mist filtering and recovery function, and its structure is novel and reasonable. By arranging a bend pipe structure 11 at the end of the exhaust pipe 1 and adding a demister 4, the oil mist droplets in the oil fume can collide and gather when passing through the wire mesh, and rely on gravity to flow back into the exhaust pipe 1, so as to avoid the oil mist being directly discharged into the air with the smoke to pollute the atmosphere. At the same time, the bend pipe structure 11 is inclined upward, which is conducive to the oil mist to quickly fall back into the exhaust pipe 1 through the bend pipe structure 11, which not only achieves the purpose of oil mist recovery, but also effectively avoids the oil mist in the exhaust pipe 1 from being directly discharged through the end of the exhaust pipe 1 and falling to the ground to pollute the environment, thereby solving the problem of oil droplets in the oil fume being directly discharged into the atmosphere or dripping on the ground to pollute the environment.

[0045] Embodiment 2

[0046] like Figure 2 As shown, on the basis of the first embodiment, this embodiment further provides a rain cap 6 in the oil fume exhaust device 100. The rain cap 6 is provided at the end of the curved pipe structure 11, and can prevent rainwater from falling into the exhaust pipe 1 and polluting the oil tank 3. Specifically, the rain cap 6 is provided above the demister 4, and the rain cap 6 and the demister 4 are arranged at intervals, so that the clean smoke discharged from the exhaust pipe 1 is discharged laterally through the interval between the rain cap 6 and the demister 4, ensuring the normal exhaust function of the oil fume exhaust device 100.

[0047] Embodiment 3

[0048] Based on the first or second embodiment, this embodiment takes into account that the smoke exhaust pipe 1 and the elbow structure 11 are interconnected, and the oil mist falling back to the elbow structure 11 will enter the smoke exhaust pipe 1 under the action of gravity, and an oil accumulation groove 12 is further provided on the bottom side wall of the smoke exhaust pipe 1 near the elbow structure 11. Figure 2 As shown, the oil accumulation groove 12 is used to accumulate the oil mist falling back into the elbow structure 11 .

[0049] In this embodiment, the oil accumulation groove 12 is preferably an arc-shaped groove, specifically a spherical structure, and its side wall is inclined in an arc shape, which is conducive to the oil mist being smoothly drained into the arc-shaped groove.

[0050] In this embodiment, an agitator 7 is also provided at the bottom of the oil accumulation groove 12, and the agitator 7 is used to stir the oil in the oil accumulation groove 12 to prevent the oil accumulation in the oil accumulation groove 12 or the oil on the side wall from sticking. The agitator 7 is a prior art, which includes a stirring blade and a stirring blade driving mechanism. The stirring blade is rotatably installed at the bottom of the oil accumulation groove 12 through a rotating shaft. The stirring blade driving mechanism is generally arranged on the outer wall of the curved pipe structure 11, and the output end of the stirring blade driving mechanism is connected to the rotating shaft to drive the stirring blade to rotate, thereby stirring the accumulated oil in the oil accumulation groove 12. It should be noted that the bottom of the rotating shaft is rotatably connected to the bottom of the oil accumulation groove 12, and the bottom of the rotating shaft passes through the bottom of the oil accumulation groove 12 to be connected to the output end of the stirring blade driving mechanism. The penetration position of the rotating shaft and the oil accumulation groove 12 is provided with a sealing ring and other structures to ensure the sealing of the connection position of the rotating shaft and the oil accumulation groove 12. Regarding the aforementioned stirring blade, it can be a carbon steel stirring blade, which is specifically set to two blades, three blades or four blades according to actual needs. The stirrer 7 is generally in an intermittent start mode, that is, it is turned on once at a certain interval, for example, the stirrer 7 is started once every 3 days, and each time it is started for 10 minutes.

[0051] Embodiment 4

[0052] like Figure 2 As shown, in this embodiment, on the basis of the third embodiment, a return pipe 8 is further connected to the bottom of the oil accumulation groove 12 , and the return pipe 8 is used to recover the oil in the oil accumulation groove 12 .

[0053] The return pipe 8 can be directly connected to the oil storage device to collect the oil in the oil accumulation groove 12. The return pipe 8 can also be directly connected back to the oil tank 1 that discharges oil smoke to achieve the circulation and reflux collection of the oil.

[0054] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A fume exhaust device, characterized in that: include: A smoke exhaust pipe (1), one end of the smoke exhaust pipe (1) being connected to an oil tank (3) via a fan (2), and the other end of the smoke exhaust pipe (1) being provided with a curved pipe structure (11) with the end thereof tilted upward; The demister (4) is arranged at the end of the curved pipe structure (11). The demister (4) can filter out the oil mist from the oil smoke before discharging it. The oil mist filtered out by the demister (4) can fall back into the curved pipe structure (11) under the action of gravity.

2. The oil fume exhaust device according to claim 1, characterized in that: The end of the curved tube structure (11) is bent vertically upward.

3. The oil fume exhaust device according to claim 1, characterized in that: The curved pipe structure (11) and the smoke exhaust pipe (1) are integrally formed.

4. The oil fume exhaust device according to any one of claims 1 to 3, characterized in that: The demister (4) is a metal wire mesh demister.

5. The oil fume exhaust device according to claim 4, characterized in that: The metal wire mesh demister is a stainless steel wire mesh demister with a mesh size of 192 or more.

6. The oil fume exhaust device according to any one of claims 1 to 3, characterized in that: It also comprises a rain cap (6), which is arranged at the end of the curved pipe structure (11), and the rain cap (6) and the curved pipe structure (11) are arranged at a distance, so that the oil smoke discharged from the smoke exhaust pipe (1) can be discharged laterally through the distance between the rain cap (6) and the curved pipe structure (11).

7. The oil fume exhaust device according to any one of claims 1 to 3, characterized in that: The smoke exhaust pipe (1) is provided with an oil accumulation groove (12) on the bottom side wall close to the curved pipe structure (11), and the oil accumulation groove (12) is used to accumulate oil mist falling back into the curved pipe structure (11).

8. The oil fume exhaust device according to claim 7, characterized in that: The oil accumulation groove (12) is an arc-shaped groove.

9. The oil fume exhaust device according to claim 7, characterized in that: A stirrer (7) is also provided at the bottom of the oil accumulation groove (12), and the stirrer (7) is used to stir the oil in the oil accumulation groove (12) to prevent oil from accumulating in the oil accumulation groove (12).

10. The oil fume exhaust device according to claim 7, characterized in that: The bottom of the oil accumulation groove (12) is also connected to a return pipe (8), and the return pipe (8) is used to recover the oil in the oil accumulation groove (12).

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