Demister and demisting system

Abstract

The utility model discloses a demister and a demisting system. The demister comprises a barrel body, a flow guide assembly and an oil collecting assembly, the barrel body comprises an inner cavity, a first end and a second end, the first end and the second end are oppositely arranged, and the first end is an air exhaust end; the flow guide assembly comprises a horn outer shell, a horn inner shell and a plurality of flow guide blades distributed between the horn outer shell and the horn inner shell, the horn outer shell comprises a first small opening and a first large opening, the horn inner shell comprises a second small opening and a second large opening, the first small opening is a mist inlet, the second small opening is closed, and the second large opening is closed. The first large opening is connected with the first end, and a flow guide channel communicated with the inner cavity is formed between every two adjacent flow guide blades; the oil collecting assembly comprises an oil collecting shell with an oil collecting cavity and an oil pipe, the oil collecting cavity is communicated with the inner cavity, and the oil collecting device has the advantages of being good in demisting effect, simple in structure, free of filtering, good in demisting effect, capable of saving cost and capable of improving collecting efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of oil mist treatment equipment, in particular to a demister and a demisting system. Background Art

[0002] With the development of industry, part processing is becoming more and more extensive, and industrial oil mist will be generated during processing. Generally, the industries that generate oil mist mainly include cutting, grinding, heat treatment, etc. During the processing, the formation mechanism of industrial oil mist can be attributed to two types: atomization and evaporation. Atomization is the process of converting mechanical energy into the surface energy of liquid droplets. When the liquid is sprayed onto the fixed or high-speed rotating parts of the machine tool, a violent impact is formed, and the liquid is broken into small droplets floating in the working environment to form oil mist. Evaporation is the large amount of heat generated during the friction or cutting process when pure oil is sprayed at high speed onto the drill bit, which makes the temperature of the pure oil significantly higher than the saturation temperature, and boiling occurs on the contact surface to generate steam. These vapors then condense around small droplets or other particles in the surrounding air to form oil mist.

[0003] The oil mist generated during the processing will pollute the working environment and cause certain harm to the human body and equipment. Therefore, it is necessary to collect the oil mist. The existing oil mist collection devices usually form a negative pressure by the rotation of the motor, and set up multiple layers of filters for filtration and then collection. Due to the high concentration of oil mist, the filters need to be replaced frequently, resulting in high costs. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a demister and a demisting system.

[0005] To achieve the above utility model purpose, the utility model adopts the following technical scheme: A demister, which comprises:

[0006] A barrel body, which comprises an inner cavity, and a first end and a second end arranged oppositely, and the first end is the air extraction end;

[0007] A flow guiding assembly, which comprises a horn-shaped outer shell, a horn-shaped inner shell and a plurality of flow guiding vanes distributed between the horn-shaped outer shell and the horn-shaped inner shell. The horn-shaped outer shell comprises a first small opening and a first large opening, the horn-shaped inner shell comprises a second small opening and a second large opening, the first small opening is the oil mist inlet, the second small opening is closed, the first large opening is connected to the first end, and a flow guiding channel communicating with the inner cavity is formed between adjacent flow guiding vanes;

[0008] An oil collecting assembly, which comprises an oil collecting shell with an oil collecting cavity and an oil pipe installed on the oil collecting shell, and the oil collecting cavity is communicated with the inner cavity.

[0009] As a further improved technical scheme of the utility model, a plurality of the flow guiding vanes are evenly distributed along the circumferential direction of the horn-shaped inner shell and have the same shape.

[0010] As a further improved technical solution of the present utility model, the guide vanes are torsionally arranged.

[0011] As a further improved technical solution of the present utility model, each of the guide vanes has the same torsion angle.

[0012] As a further improved technical solution of the present utility model, several of the guide vanes are fixedly connected to the horn outer shell and the horn inner shell.

[0013] As a further improved technical solution of the present utility model, a mist inlet pipe extends from the first small opening, a cap covers the second small opening, and the diameter of the cap is smaller than that of the mist inlet pipe.

[0014] As a further improved technical solution of the present utility model, the demister further includes an air extraction assembly, the air extraction assembly includes an end cap covering the first end and an air extraction pipe assembled to the end cap, and the air extraction pipe extends into the inner cavity.

[0015] As a further improved technical solution of the present utility model, the air extraction pipe is suspended in the inner cavity and is spaced from the first large opening, the air extraction pipe is coaxially arranged with the horn inner shell and the diameter of the air extraction pipe is smaller than that of the first large opening.

[0016] As a further improved technical solution of the present utility model, a mist inlet pipe extends from the first small opening, the air extraction pipe and the mist inlet pipe are coaxially arranged and have the same diameter.

[0017] In addition, the present utility model further provides a demisting system, which includes the demister as described above, and an air extraction device and a mist storage vacuum device connected to the demister.

[0018] The beneficial effects of the present utility model are: The demister of the present utility model has a better demisting effect, a simple structure, does not require filtration, has a better demisting effect, saves costs, and improves the collection efficiency. Description of the Drawings

[0019] Figure 1 is a schematic structural view of the demister of the present utility model;

[0020] Figure 2 is Figure 1 a partial structural view of

[0021] Figure 3 is Figure 2 a partial structural view from another angle;

[0022] Figure 4 is Figure 1 a partial structural exploded view of

[0023] Figure 5 It is a schematic structural diagram of another angle of the demister of the present utility model;

[0024] Figure 6 is Figure 5 a partial structural schematic diagram of;

[0025] Figure 7 is Figure 5 a partial structural decomposition schematic diagram of. Specific embodiments

[0026] The following will describe the present utility model in detail with reference to the various embodiments shown in the drawings. Please refer to the illustrations, which are the preferred embodiments of the present utility model. It should be noted, however, that these embodiments are not intended to limit the present utility model, and any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1 to 7 , the present utility model discloses a demister 100, which includes a barrel body 1, a flow guiding assembly 2, an oil collecting assembly 3, and an air extraction assembly 4.

[0028] The barrel body 1 is generally in a cylindrical shape, and it includes an inner cavity 11 formed by enclosing and opposite first end 12 and second end 13, wherein the first end 12 is the air extraction end. The first end 12 is provided with a first fastening ring 121, and the second end 13 is provided with a second fastening ring 131.

[0029] The flow guiding assembly 2 is generally in a horn shape, and it has the characteristic that one end has a smaller diameter and the other end has a larger diameter. The end with a larger diameter of the flow guiding assembly 2 is fixed to the second end 13 of the barrel body 1. The flow guiding assembly 2 includes a horn outer shell 21, a horn inner shell 22, and a plurality of flow guiding vanes 23. The horn outer shell 21 is in a horn shape, the horn inner shell 22 is in a horn shape, the horn inner shell 22 is located inside the horn outer shell 21 and is coaxially arranged, the horn outer shell 21 and the horn inner shell 22 are spaced apart and form a horn-shaped annular space therebetween. A plurality of flow guiding vanes 23 are distributed in the horn-shaped annular space between the horn outer shell 21 and the horn inner shell 22. A plurality of flow guiding vanes 23 are fixed to the outer side wall 221 of the horn inner shell 22, and a plurality of flow guiding vanes 23 contact or are fixed to the inner side wall 211 of the horn outer shell 21. In other embodiments, a plurality of flow guiding vanes 23 are fixed to the outer side wall 221 and are spaced apart from the inner side wall 211, or a plurality of flow guiding vanes 23 are fixed to the inner side wall 211 and are spaced apart from the outer side wall 221, or a plurality of flow guiding vanes 23 are partially fixed to the inner side wall 211 and partially fixed to the outer side wall 221.

[0030] The horn outer shell 21 includes a first small opening 212 and a first large opening 213 at both ends according to the size and shape of the horn. The horn inner shell 22 includes a second small opening 222 and a second large opening 223 at both ends according to the size and shape of the horn. The first small opening 212 is the fog inlet, the second small opening 222 is closed, and the first large opening 213 is connected to the first end 12. In this embodiment, the first large opening 213 is clamped to the first fastening ring 121. A diversion channel 231 communicating with the inner cavity 11 is formed between adjacent diversion vanes 23.

[0031] Specifically, a plurality of diversion vanes 23 are circumferentially and uniformly distributed along the outer side wall 221 of the horn inner shell 22 and have the same shape. The diversion vanes 23 are torsionally arranged, and each diversion vane 23 has the same torsion angle. The diversion vanes 23 extend torsionally from the second small opening 222 to the second large opening 223, and a plurality of diversion vanes 23 are all torsionally turned by the same angle clockwise or counterclockwise. The diversion vane 23 includes a first side surface 232 and a second side surface 233 which are oppositely arranged, and the first side surface 232 and the second side surface 233 are asymmetrically arranged due to the torsion of the diversion vane 23. The diversion vane 23 further includes a first chord line 234 in contact with the horn inner shell 22 and a second chord line 235 in contact with the horn outer shell 21, and the first chord line 234 and the second chord line 235 have different trajectories.

[0032] In this embodiment, a plurality of diversion vanes 23 fixedly connect the horn outer shell 21 and the horn inner shell 22, and the diversion vanes 23 are fixedly arranged and do not need to rotate during use. In other embodiments, the diversion vanes 23 are fixed to the horn inner shell 22 and are spaced from the horn outer shell 21, and the diversion vanes 23 can rotate during use: the horn inner shell 22 can be movably arranged, and the diversion vanes 23 can rotate naturally due to the air flow driving; or it can be driven to rotate due to the setting of a driving device, and the rotation speed and direction can be controlled.

[0033] An inlet fog pipe 214 extends from the first small opening 212, and the second small opening 222 is covered with a hemispherical cap 224. The diameter of the cap 224 is smaller than the diameter of the inlet fog pipe 214. After the fog enters from the inlet fog pipe 214, part of it directly enters the diversion channel 231, and part of it is scattered by the cap 224, and the fog is dispersed into each diversion channel 231. In other embodiments, the cap 224 is a part of a sphere, which can be larger or smaller than a hemisphere, or the cap 224 is in the shape of other curved surfaces. The cap 224 closes the second small opening 222 and guides and disperses the fog.

[0034] The oil collecting assembly 3 includes an oil collecting housing 31 having an oil collecting cavity 311 and an oil pipe 32 installed on the oil collecting housing 31. The oil collecting housing 31 is in a cubic shape and is located below the whole body 1, and the oil collecting cavity 311 is communicated with the inner cavity 11. An oil collecting port 313 is provided on the bottom plate 312 of the oil collecting housing 31, and an oil pipe 32 is installed at the oil collecting port 313. The oil pipe 32 is connected to an external oil tank (not shown) or other equipment, etc.

[0035] The air extraction component 4 includes an end cap 41 covering the first end 12 and an air extraction pipe 42 assembled to the end cap 41. The end cap 41 is snap-fitted to the first fastening ring 121. The air extraction pipe 42 extends into the inner cavity 11. The air extraction pipe 42 is suspended in the inner cavity 11 and is spaced from the first large opening 213. The air extraction pipe 42 is coaxially arranged with the horn inner shell 22 and the diameter of the air extraction pipe 42 is smaller than the diameter of the first large opening 213. The other end of the air extraction pipe 42 protrudes out of the barrel body 1 and can be connected to an air extraction device (not shown), etc. The air is extracted through the air extraction pipe 42 to suck the mist. The air extraction pipe 42 and the mist inlet pipe 214 are coaxially arranged and have the same diameter. Therefore, the air extraction pipe 42 is not directly aligned with the mist inlet pipe 214 on the axis and will not directly absorb the mist. The distance between the air extraction pipe 42 and the second large opening 223 is less than 1 / 4 and greater than 1 / 6 of the distance between the first end 12 and the second end 13 to achieve a better defogging effect.

[0036] The working principle of the demister 100 of the present utility model is as follows: During operation, the air extraction pipe 42 is externally connected to an air extraction device. After ventilation, the oil mist of the connected machine tool and other equipment is sucked in from the mist inlet pipe 214. The oil mist first enters the mist inlet pipe 214. Part of the oil mist directly enters the diversion channel 231, and part of it is dispersed into the diversion channel 231 after hitting the cap 224. Under the action of the horn outer shell 21, the horn inner shell 22 and the diversion blades 23, the oil in the oil mist is deposited and adhered to the inner side wall 211, the outer side wall 221, the first side surface 232 and the second side surface 233. After forming oil droplets by collection, they flow to the oil collection cavity 311 by their own gravity and air flow, and enter the oil pipe 32 through the bottom plate 312 for collection.

[0037] The air extraction pipe 42 of the demister 100 of the present utility model extends and is suspended in the inner cavity 11. The air extraction pipe 42 is spaced from the horn inner shell 22 and the aperture of the air extraction pipe 42 is smaller than the aperture of the second large opening 223 of the horn inner shell 22. The air extraction pipe 42 is coaxially arranged with the mist inlet pipe 214. Therefore, the air extraction pipe 42 does not directly face the oil mist. After the oil mist enters, it is diffused through the horn-shaped horn inner shell 22 and the oil in the oil mist is deposited under the action of the diversion blades 23. Even if it is not completely deposited, a small amount of oil-containing oil mist is sucked into the inner cavity 11 and continues to be deposited in the inner cavity 11. The mist without oil is sucked away by the air extraction pipe 42 near the second large opening 223, thus achieving a better defogging effect. The structure is simple, no filtration is required, the defogging effect is better, the cost is saved, and the collection efficiency is improved. Through the horn-shaped distribution and torsional setting of the diversion blades 23, the oil in the oil mist is effectively deposited, the cost is saved, and the efficiency is improved. The demister 100 can achieve the collection effect without installing a driving device to drive the diversion blades 23.

[0038] The present utility model also discloses a demisting system, which includes the demister 100 as described above, and further includes an air extraction device and a mist storage vacuum device (not shown) connected to the demister. The air extraction device is connected to an air extraction pipe 32, and the demisting vacuum device is connected to a mist inlet pipe 214. The demisting system can achieve the effects of removing oil mist and collecting liquid oil without a filtration device, has a simple structure, better demisting effect, cost savings, and improved collection efficiency. Through the horn-shaped distribution and torsional setting of the guide vanes 23, the oil in the oil mist is effectively deposited, saving costs.

[0039] It should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0040] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present utility model, and they are not intended to limit the protection scope of the present utility model. Any equivalent embodiments or changes made without departing from the technical spirit of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A demister, characterized in that: It includes: The barrel body comprises an inner cavity, and a first end and a second end arranged opposite to each other, wherein the first end is a suction end; A flow guide assembly, comprising a speaker housing, a speaker inner housing, and a plurality of flow guide blades distributed between the speaker housing and the speaker inner housing, wherein the speaker housing comprises a first small opening and a first large opening, and the speaker inner housing comprises a second small opening and a second large opening, wherein the first small opening is a mist inlet, the second small opening is closed, the first large opening is connected to the first end, and a flow guide channel communicating with the inner cavity is formed between adjacent flow guide blades; The oil collecting assembly comprises an oil collecting shell with an oil collecting cavity and an oil pipe installed on the oil collecting shell, wherein the oil collecting cavity is communicated with the inner cavity.

2. The demister according to claim 1, characterized in that: The plurality of guide vanes are evenly distributed along the circumference of the horn inner shell and have the same shape.

3. The demister according to claim 1, characterized in that: The guide vanes are twisted.

4. The demister according to claim 3, characterized in that: The guide blades have the same twist angle.

5. The demister according to claim 1, characterized in that: A plurality of guide vanes are fixedly connected to the speaker outer shell and the speaker inner shell.

6. The demister according to claim 1, characterized in that: The first small opening is extended with a mist inlet pipe, and the second small opening is covered with a cap, and the diameter of the cap is smaller than the diameter of the mist inlet pipe.

7. The demister according to claim 1, characterized in that: The demister further comprises an air extraction assembly, wherein the air extraction assembly comprises an end cover covering the first end and an air extraction pipe assembled on the end cover, wherein the air extraction pipe extends into the inner cavity.

8. The demister according to claim 7, characterized in that: The air extraction pipe is suspended in the inner cavity and spaced apart from the first large opening. The air extraction pipe is coaxially arranged with the speaker inner shell and the diameter of the air extraction pipe is smaller than the diameter of the first large opening.

9. The demister according to claim 8, characterized in that: A mist inlet pipe is extended from the first small opening, and the air extraction pipe and the mist inlet pipe are coaxially arranged and have the same diameter.

10. A demisting system, characterized in that: The invention comprises a demister as claimed in any one of claims 1 to 9, and an air extraction device and a mist storage vacuum device connected to the demister.

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