CN219502343U - Oil mist separation device and waste gas treatment system - Google Patents

Abstract

The utility model discloses an oil mist separation device and an exhaust gas treatment system, and relates to the field of exhaust gas treatment. The oil mist separating device comprises a horn pipe, a filter and an exhaust pipeline, wherein the horn pipe is respectively provided with a wide-mouth end and a narrow-mouth end, the wide-mouth end is used for introducing waste gas, the narrow-mouth end is connected with the inflow end of the filter, the outflow end of the filter is connected with the exhaust pipeline, and the filter is used for filtering oil mist in the waste gas. The oil mist separation device provided by the utility model has a better oil mist separation effect.

Description

Oil mist separation device and waste gas treatment system

Technical Field

The utility model relates to the field of waste gas treatment, in particular to an oil mist separation device and a waste gas treatment system.

Background

In the silicon carbide crystal production process, for the equipment that produces organic waste gas, external horn pipe is often adopted on the market to discharge waste gas into the exhaust pipeline. Waste gas flows in from the wide mouth end of the horn tube, the flow rate of the waste gas can be rapidly slowed down due to the sudden increase of the flow area of the waste gas, the pressure is reduced, under the action of gravity, the waste oil in the waste gas and the waste gas start to separate due to different specific gravities, the waste oil sinks to the bottom of the horn tube due to the heavier waste oil, and the waste gas flows out from the narrow mouth end, so that the oil mist separation of the waste gas is completed.

In practical application, only the oil mist separation effect of the external horn tube is poor, and waste oil which does not sink when the flow speed of the waste gas is too fast can be flushed into an exhaust pipeline by the follow-up airflow from the narrow-mouth end, so that the oil mist separation effect is seriously influenced.

Disclosure of Invention

The utility model aims to provide an oil mist separation device, which can improve oil mist separation effect.

Another object of the present utility model is to provide an exhaust gas treatment system capable of enhancing an oil mist separation effect.

The embodiment of the utility model provides a technical scheme that:

the utility model provides an oil mist separator, includes horn pipe, filter and exhaust pipe, the horn pipe is provided with wide mouth end and narrow mouth end respectively, wide mouth end is used for introducing waste gas, the narrow mouth end with the inflow end of filter is connected, the outflow end of filter with exhaust pipe connects, the filter is used for filtering oil mist in the waste gas.

Further, the inflow end of the filter is detachably connected with the narrow-mouth end; the outflow end of the filter is detachably connected with the exhaust pipeline.

Further, the filter comprises a main body and an upper cover, wherein two ends of the main body are detachably connected with the narrow opening end and the exhaust pipeline respectively, a filtering filler for filtering oil mist is accommodated in the main body, the upper cover is movably arranged at one end of the main body and is used for opening or sealing the main body, and the upper cover is provided with an overflow hole in a penetrating mode.

Further, the oil mist separation device further comprises a transparent oil storage cup and a first oil discharge valve, an oil blocking ring groove is formed in the wide opening end, and the transparent oil storage cup is detachably connected with the first oil discharge valve and selectively communicated with the oil blocking ring groove through the first oil discharge valve.

Further, the oil mist separation device further comprises a transparent oil storage cup and a second oil discharge valve, an oil blocking ring groove is formed in the wide opening end, the transparent oil storage cup is communicated with the oil blocking ring groove, and the second oil discharge valve is communicated with the transparent oil storage cup and used for selectively discharging oil stored in the transparent oil storage cup.

Further, a first sampling hole is formed in the side wall of the horn tube in a penetrating mode.

Further, the exhaust pipeline comprises a sampling pipe, one end of the sampling pipe is connected with the outflow end of the filter, and a second sampling hole is formed in the side wall of the sampling pipe in a penetrating mode.

Further, the exhaust pipeline further comprises an exhaust oil accumulation pipe, one end, away from the filter, of the sampling pipe is communicated with the exhaust oil accumulation pipe, the exhaust oil accumulation pipe extends in the vertical direction, the vertical upper end of the exhaust oil accumulation pipe is used for discharging exhaust gas, and the vertical lower end of the exhaust oil accumulation pipe is closed and provided with a third oil discharge valve.

Further, the oil mist separation device further comprises a support member, and the exhaust oil accumulation pipe is connected with the horn pipe through the support member.

The embodiment of the utility model also provides an exhaust gas treatment system, which comprises the oil mist separation device, wherein the oil mist separation device comprises a horn pipe, a filter and an exhaust pipeline, the horn pipe is respectively provided with a wide-mouth end and a narrow-mouth end, the wide-mouth end is used for introducing exhaust gas, the narrow-mouth end is connected with the inflow end of the filter, the outflow end of the filter is connected with the exhaust pipeline, and the filter is used for filtering oil mist in the exhaust gas.

Compared with the prior art, the oil mist separation device provided by the utility model has the advantages that the filter is additionally arranged between the horn pipe and the exhaust pipeline, the horn pipe realizes the first-stage separation of oil mist in waste gas, the filter realizes the second-stage separation of the oil mist, and excessive oil mist entering the exhaust pipeline due to too high flow rate of the waste gas is avoided. Therefore, the oil mist separation device provided by the utility model has the beneficial effects that: has better oil mist separation effect.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described. It is appreciated that the following drawings depict only certain embodiments of the utility model and are therefore not to be considered limiting of its scope. Other relevant drawings may be made by those of ordinary skill in the art without undue burden from these drawings.

Fig. 1 is a schematic structural view of an oil mist separation device according to a first embodiment of the present utility model;

FIG. 2 is a schematic view of the filter of FIG. 1;

fig. 3 is a schematic structural diagram of an oil mist separation device according to a second embodiment of the present utility model.

Icon: 100-an oil mist separation device; 110-a horn; 111-wide mouth end; 112-a narrow mouth end; 113-an oil-retaining ring groove; 114-a first sampling hole; 120-filter; 121-a body; 1211-a handle; 1212-a connecting flange; 122-upper cover; 1221-overflow aperture; 130-an exhaust line; 131-sampling tube; 1311-a second sampling aperture; 132-exhaust oil accumulation pipe; 140-a transparent oil storage cup; 150-a first oil drain valve; 160-a second oil drain valve; 170-a third oil drain valve; 180-support.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships conventionally put in place when the inventive product is used, or the directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, terms such as "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The following describes specific embodiments of the present utility model in detail with reference to the drawings.

First embodiment

Referring to fig. 1, fig. 1 is a schematic diagram illustrating a structure of an oil mist separation device 100 according to the present embodiment.

The oil mist separation device 100 provided in this embodiment is used for performing oil mist separation treatment on process equipment that generates organic waste gas in the silicon carbide crystal production and processing process, where the process equipment may be a cutting machine or the like, and the oil mist separation device 100 has the characteristic of better oil mist separation effect.

The oil mist separation device 100 comprises a horn tube 110, a filter 120 and an exhaust pipeline 130, wherein the horn tube 110 is respectively provided with a wide-mouth end 111 and a narrow-mouth end 112, the wide-mouth end 111 is used for introducing exhaust gas, the narrow-mouth end 112 is connected with an inflow end of the filter 120, an outflow end of the filter 120 is connected with the exhaust pipeline 130, and the filter 120 is used for filtering oil mist in the exhaust gas.

In practical application, the process equipment inputs the discharged exhaust gas into the wide opening end 111 of the horn tube 110 through the discharge pipeline, when the exhaust gas enters the wide opening end 111 through the discharge pipeline, the flowable area of the exhaust gas is suddenly increased, the flow rate of the exhaust gas is rapidly slowed down, and the pressure is reduced. Under the action of gravity, oil mist and other gases in the exhaust gas start to separate due to different specific gravities, the oil mist sinks to the bottom of the horn tube 110 due to the heavier weight, and the other gases flow out from the narrow-mouth end 112, so that the first-stage separation of the oil mist in the exhaust gas is completed.

The exhaust gas after the first stage separation of the oil mist flows out from the narrow mouth end 112 of the horn 110, flows into the exhaust pipe 130 through the filter 120, and is discharged. During the flow of exhaust gas through the filter 120, the filter 120 filters the remaining oil mist in the exhaust gas, preventing the remaining oil mist from entering the exhaust line 130, i.e. the filter 120 performs a second stage of separation of the oil mist in the exhaust gas.

It can be seen that, in the oil mist separation device 100 provided in this embodiment, by adding the filter 120 at the narrow opening end 112 of the horn tube 110, two-stage separation of oil mist in the exhaust gas is achieved, so that the oil mist separation effect can be significantly improved, and the residual oil mist is prevented from entering the exhaust pipeline 130.

In order to facilitate the disassembly and assembly of the filter 120, the inflow end of the filter 120 is detachably connected to the narrow-mouth end 112, and the outflow end of the filter 120 is detachably connected to the exhaust pipe 130, considering that the filter 120 needs to be cleaned or replaced from time to time.

Referring to fig. 2 in combination, fig. 2 is a schematic diagram of a filter 120.

The filter 120 provided in this embodiment includes a main body 121 and an upper cover 122, two ends of the main body 121 are detachably connected with the narrow-mouth end 112 and the exhaust pipeline 130 respectively, a filtering filler for filtering oil mist is accommodated in the main body 121, the upper cover 122 is movably disposed at one end of the main body 121 for opening or sealing the main body 121, and the upper cover 122 is provided with an overflow hole 1221 penetrating therethrough.

It is understood that the main body 121 is in a pipe section shape, two ends of the main body 121 are respectively provided with a connecting flange 1212, and two ends of the main body 121 are detachably connected with the narrow mouth end 112 of the flare 110 and the exhaust pipeline 130 through the two connecting flanges 1212. The main body 121 is provided therein with a filter packing (not shown), and the exhaust gas inputted into the main body 121 from the narrow opening end 112 of the horn tube 110 flows into the exhaust pipe 130 from the other end of the main body 121 after being filtered by the filter packing.

As the working time increases, oil stains form on the filter filler, which results in a reduced filtering effect, and thus the filter filler needs to be replaced or cleaned. In this case, the main body 121 is detached from the narrow-mouth end 112 and the exhaust pipe 130, and then the upper cover 122 is opened, and the filter filler in the main body 121 is taken out for treatment.

In this embodiment, one side of the upper cover 122 is rotatably fixed to one end of the main body 121 by a screw, and when the main body 121 needs to be opened, a force is applied to the upper cover 122 to rotate the upper cover 122 around the screw until the upper cover 122 gets away from the port of the main body 121. When the body 121 needs to be re-covered after the replacement or cleaning of the filter filler is completed, a force is applied to the upper cover 122 to rotate the upper cover 122 around the screw until the upper cover 122 rotates from a position avoiding the port of the body 121 to re-cover the port of the body 121. It will be appreciated that in other embodiments, the upper cover 122 may be movably coupled to the body 121 using other coupling means, such as a slip fit.

In this embodiment, the filter filler is a nonwoven fabric, and in other embodiments, other substances with an oil mist filtering function may be selected according to practical application conditions.

Considering that the main body 121 is in a pipe section shape, the outer side wall thereof is smooth and inconvenient to take, and the difficulty of the disassembly and assembly operation is increased, in this embodiment, a handle 1211 for the operator to hold is provided on the outer side wall of the main body 121.

With continued reference to fig. 1, in the present embodiment, the wide opening end 111 of the bell pipe 110 is provided with an oil-blocking ring groove 113, the oil-blocking ring groove 113 extends circumferentially along the inner edge of the wide opening end 111, and the oil-blocking ring groove 113 encloses a channel for the discharge pipeline of the process equipment to extend into the bell pipe 110. In practical application, the oil mist separated in the horn tube 110 sinks into the oil-blocking ring groove 113, and is collected in the oil-blocking ring groove 113 to form oil, so that the pollution of the process environment caused by the leakage of the oil mist from the wide-mouth end 111 is avoided.

The collected oil liquid level in the oil-blocking ring groove 113 is inconvenient to observe, and the oil liquid level is too high to overflow under the condition of untimely discharge, and the process environment is polluted. In addition, the oil in the oil-blocking ring groove 113 is difficult to discharge, and each discharge requires the discharge pipeline of the process equipment to be detached from the bell pipe 110, thus the operation is complicated.

In order to solve the above-mentioned problems, the oil mist separation device 100 provided in this embodiment further includes a transparent oil storage cup 140 and a first oil drain valve 150, where the transparent oil storage cup 140 is detachably connected to the first oil drain valve 150 and selectively communicates with the oil retaining ring groove 113 through the first oil drain valve 150. The first oil drain valve 150 can introduce the oil in the oil retaining ring groove 113 into the transparent oil storage cup 140 for storage in a state of being kept open, so that excessive overflow of the oil in the oil retaining ring groove 113 is avoided.

In practical application, in the normal working process, the first oil drain valve 150 is kept open, the oil collected in the oil blocking ring groove 113 flows into the transparent oil storage cup 140 through the first oil drain valve 150 for storage, and an operator can clearly and intuitively observe the level of the oil in the transparent oil storage cup 140. It will be appreciated that the transparent oil storage cup 140 is provided with a chamber for storing oil, and may be made of a transparent material such as glass, transparent plastic, etc.

When the oil liquid level in the transparent oil storage cup 140 is observed to be too high, an operator closes the first oil discharge valve 150 to block the communication between the oil blocking ring groove 113 and the transparent oil storage cup 140, then detaches the transparent oil storage cup 140 from the first oil discharge valve 150, reconnects the transparent oil storage cup 140 with the first oil discharge valve 150 after cleaning the stored oil, and opens the first oil discharge valve 150 to communicate the oil blocking ring groove 113 with the transparent oil storage cup 140.

In this embodiment, the exhaust pipeline 130 includes a sampling tube 131 and an exhaust oil collecting tube 132, one end of the sampling tube 131 is connected to the outflow end of the filter 120, one end of the sampling tube 131 far away from the filter 120 is communicated with the exhaust oil collecting tube 132, and the sampling tube 131 guides the exhaust gas filtered by the filter 120 into the exhaust oil collecting tube 132.

In order to timely obtain the filtering effect of the filtering filler in the filter 120, so that the filtering filler can be replaced or cleaned in time under the condition that the filtering effect of the filtering filler is seriously reduced, in this embodiment, a first sampling hole 114 is penetratingly provided on the side wall of the horn tube 110, and a second sampling hole 1311 is penetratingly provided on the side wall of the sampling tube 131.

In practical application, an operator can sample the waste gas at the upstream and downstream of the filter 120 through the first sampling hole 114 and the second sampling hole, and can obtain the filtering effect of the filtering filler by analyzing the oil mist content of the waste gas sampled at two positions, so as to timely draw the conclusion of whether to replace or clean the filtering filler, and avoid the reduction of the separation effect of the oil mist separation device 100.

In order to avoid the exhaust gas leaking from the first sampling hole 114 and the second sampling hole 1311 when sampling is not needed, in this embodiment, plugs (not shown in the figure) are provided on the outer sidewall of the bell pipe 110 and the outer sidewall of the sampling pipe 131, and the two plugs can respectively plug the first sampling hole 114 and the second sampling hole 1311 when sampling is not needed, and can open the first sampling hole 114 and the second sampling hole 1311 when sampling is needed.

In order to further enhance the separation effect of the oil mist separation device 100, in this embodiment, the exhaust gas oil collecting pipe 132 extends in the vertical direction, the vertical upper end of the exhaust gas oil collecting pipe 132 is used for discharging the exhaust gas, and the vertical lower end of the exhaust gas oil collecting pipe 132 is closed and provided with the third oil discharge valve 170, considering that part of the oil mist may still be contained in the exhaust gas after the two-stage separation of the trumpet 110 and the filter 120.

It should be noted that, after the exhaust gas is discharged into the exhaust gas oil collecting pipe 132 by the sampling pipe 131, the exhaust gas flows in the vertical direction, and because the oil mist in the exhaust gas has a larger mass than other gas components, the oil mist gradually sinks and gathers together under the action of gravity to further increase the mass, and finally sinks to the vertical lower end of the exhaust gas oil collecting pipe 132 and gathers into oil, and other gases in the exhaust gas are discharged from the vertical upper end of the exhaust gas oil collecting pipe 132.

It can be seen that the exhaust oil accumulation pipe 132 realizes the third stage separation of the oil mist in the exhaust gas, and the oil mist separation device 100 provided in this embodiment can realize the third stage separation of the oil mist in the exhaust gas by combining the horn pipe 110 and the filter 120, and has a more remarkable separation effect.

In addition, in order to improve the stability of the overall structure, the oil mist separation device 100 provided in this embodiment further includes a support member 180, and the exhaust oil accumulation pipe 132 is connected to the trumpet 110 through the support member 180.

Second embodiment

Referring to fig. 3, fig. 3 is a schematic diagram illustrating a structure of an oil mist separation device 100 according to the present embodiment.

The oil mist separating apparatus 100 provided in this embodiment is different from the first embodiment in that the first oil drain valve 150 is omitted, the transparent oil reservoir cup 140 communicates with the oil baffle ring groove 113, and the second oil drain valve 160 communicates with the transparent oil reservoir cup 140 for selectively draining the oil stored in the transparent oil reservoir cup 140.

The oil collected in the oil baffle ring groove 113 can directly flow into the transparent oil storage cup 140, and an operator can intuitively observe the liquid level of the oil in the transparent oil storage cup 140. During normal operation, the second oil drain valve 160 remains closed, and when an operator observes that the oil level in the transparent oil storage cup 140 is too high, the second oil drain valve 160 is opened to complete timely draining of the oil in the transparent oil storage cup 140.

In this embodiment, the oil in the transparent oil storage cup 140 is discharged without disassembling the transparent oil storage cup 140, and the second oil discharge valve 160 is directly opened. It will be appreciated that in order to avoid contamination of the process environment by oil, it is necessary to prepare the oil receiving means to receive oil discharged from the second oil discharge valve 160 before opening the second oil discharge valve 160.

In summary, the oil mist separation device 100 provided by the utility model can realize multistage separation treatment of oil mist in exhaust gas, and has a remarkable oil mist separation effect.

Third embodiment

The present embodiment provides an exhaust gas treatment system including the oil mist separation device 100 provided in the first embodiment or the second embodiment. It will be appreciated that the exhaust gas treatment system may further include various treatment devices such as a purification device, a water washing device, etc., and will not be described in any greater detail in this embodiment.

The exhaust gas treatment system provided in this embodiment has the advantage of better exhaust gas treatment effect due to the remarkable oil mist separation effect of the oil mist separation device 100.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides an oil mist separator, its characterized in that includes horn (110), filter (120) and exhaust pipe (130), horn (110) are provided with wide mouth end (111) and narrow mouth end (112) respectively, wide mouth end (111) are used for introducing waste gas, narrow mouth end (112) with the inflow end of filter (120) is connected, the outflow end of filter (120) with exhaust pipe (130) are connected, filter (120) are used for filtering oil mist in the waste gas.

2. The oil mist separating device according to claim 1, characterized in that the inflow end of the filter (120) is detachably connected to the narrow-mouth end (112); the outflow end of the filter (120) is detachably connected to the exhaust line (130).

3. The oil mist separation device according to claim 2, characterized in that the filter (120) comprises a main body (121) and an upper cover (122), both ends of the main body (121) are detachably connected with the narrow-mouth end (112) and the exhaust pipeline (130), a filter filler for filtering the oil mist is accommodated in the main body (121), the upper cover (122) is movably arranged at one end of the main body (121) for opening or closing the main body (121), and the upper cover (122) is provided with an overflow hole (1221) in a penetrating manner.

4. The oil mist separation device according to claim 1, further comprising a transparent oil storage cup (140) and a first oil drain valve (150), wherein the wide mouth end (111) is provided with an oil blocking ring groove (113), and the transparent oil storage cup (140) is detachably connected to the first oil drain valve (150) and selectively communicates with the oil blocking ring groove (113) through the first oil drain valve (150).

5. The oil mist separator device according to claim 1, further comprising a transparent oil reservoir cup (140) and a second oil drain valve (160), wherein the wide mouth end (111) is provided with an oil retaining ring groove (113), the transparent oil reservoir cup (140) is in communication with the oil retaining ring groove (113), and the second oil drain valve (160) is in communication with the transparent oil reservoir cup (140) for selectively draining oil stored in the transparent oil reservoir cup (140).

6. The oil mist separating device according to claim 1, characterized in that a first sampling hole (114) is provided through a side wall of the bell pipe (110).

7. The oil mist separating device according to claim 1, characterized in that the exhaust line (130) comprises a sampling tube (131), one end of the sampling tube (131) is connected with the outflow end of the filter (120), and a second sampling hole (1311) is provided through the side wall of the sampling tube (131).

8. The oil mist separating device according to claim 7, characterized in that the exhaust line (130) further comprises an exhaust oil collecting pipe (132), an end of the sampling pipe (131) remote from the filter (120) being in communication with the exhaust oil collecting pipe (132), the exhaust oil collecting pipe (132) extending in a vertical direction, a vertical upper end of the exhaust oil collecting pipe (132) being for discharging the exhaust gas, a vertical lower end of the exhaust oil collecting pipe (132) being closed and being provided with a third oil discharge valve (170).

9. The oil mist separation device according to claim 8, characterized in that the oil mist separation device further comprises a support member (180), and the exhaust gas oil accumulation pipe (132) is connected to the trumpet (110) through the support member (180).

10. An exhaust gas treatment system comprising the oil mist separation device according to any one of claims 1 to 9.