Oil mist collection system

Abstract

To provide an oil mist recovery system that aims to reduce the consumption of filter material and lower recovery costs. [Solution] The system includes a housing 1, a wind pressure pushing mechanism 2, a non-powered fan 3, and a filtration and collection mechanism 4, and has a flow path inside the housing, with an intake port 11 and an exhaust port 12 at both ends of the flow path, the wind pressure pushing mechanism is installed in the flow path and positioned so that gas upstream of the wind pressure pushing mechanism is pushed downstream of the wind pressure pushing mechanism, the non-powered fan is installed in the flow path and positioned upstream of the wind pressure pushing mechanism, the filtration and collection mechanism includes at least a filter material, and the filter material is installed relatively downstream of the wind pressure pushing mechanism.

Description

[Technical Field]

[0001] The present invention relates to an oil mist recovery system, and more particularly to an oil mist recovery system that reduces the frequency of replacing consumables. [Background technology]

[0002] In industrial fields such as CNC (Computer Numerical Control) machining, oil mist is a by-product that is in high demand for purification and recovery. The generated oil mist is usually collected and purified using oil mist recovery equipment. These oil mist recovery equipment mainly use centrifugal filters and filtration filters. In such cases, the use of consumables such as filters is very high, which leads to problems such as high recovery costs and the need for frequent replacement. Summary of the Invention [Problem to be solved by the invention]

[0003] Therefore, in order to solve the various problems of conventional oil mist recovery devices, the present invention proposes an oil mist recovery system that reduces the frequency of replacing consumables. [Means for solving the problem]

[0004] In order to achieve the above and other objects, the present invention proposes an oil mist recovery system including: a housing having an internal flow path with an intake port and an exhaust port at each end of the flow path; a wind pressure pushing mechanism provided in the flow path so that gas upstream of the wind pressure pushing mechanism is pushed downstream of the wind pressure pushing mechanism; a non-powered fan provided in the flow path and located upstream of the wind pressure pushing mechanism; and a filtering and collecting mechanism including at least a filter material, the filter material being located relatively downstream of the wind pressure pushing mechanism.

[0005] In one embodiment of the present invention, the filter device further includes at least one collision plate disposed downstream of the wind pressure pushing mechanism and upstream of the filter material, the collision plate having a collision portion and an opening.

[0006] In one embodiment of the present invention, there are a plurality of the collision plates, and the openings of the collision plates are offset from each other.

[0007] In one embodiment of the present invention, the filter collecting mechanism further includes a porous inner barrel surrounded by a filter material.

[0008] In one embodiment of the present invention, the filter collecting mechanism further includes a porous outer barrel surrounded by the filter material.

[0009] In one embodiment of the present invention, the filter collecting mechanism is detachably connected to the housing.

[0010] In one embodiment of the present invention, the housing has an oil recovery outlet and a bottom surface that slopes toward the oil recovery outlet.

[0011] In one embodiment of the present invention, the housing has an oil recovery pipe, one end of which is connected to the oil recovery outlet.

[0012] In one embodiment of the present invention, the device further includes a power assembly and a pressure gauge, the power assembly is provided with a display, the pressure gauge is provided in the flow path and located downstream of the pneumatic pushing mechanism, the power assembly connects a signal to the pressure gauge, and the value measured by the pressure gauge is displayed on the display.

[0013] In one embodiment of the present invention, the fan further includes a steel wire ball module disposed upstream of the unpowered fan. [Effects of the Invention]

[0014] As a result, the oil mist collection system of this invention changes the filter material designed in the upstream to the downstream end, reducing the frequency of replacing the consumable filter material and lowering collection costs. Meanwhile, because most of the oil mist is captured by collision at the front of the oil mist collection system, the amount of oil that can be collected and reused increases relatively, which indirectly increases the reuse rate of the collected oil. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a schematic perspective view of an oil mist recovery system according to a first embodiment of the present invention; [Figure 2] 1 is a schematic diagram of an impact plate according to a first embodiment of the present invention; [Figure 3] 1 is a schematic cross-sectional view of a filtering and collecting mechanism according to a first embodiment of the present invention; [Figure 4] FIG. 2 is a schematic diagram of FIG. 1 from another angle. [Figure 5] FIG. 2 is a schematic perspective view of an oil mist recovery system according to a second embodiment of the present invention. [Figure 6] 4 is a schematic cross-sectional view of an oil mist recovery system according to a second embodiment of the present invention; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] In order to fully understand the present invention, the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art can understand the objectives, features, and advantages of the present invention from the content disclosed in this specification. It should be noted that the present invention can be implemented or applied in other different specific embodiments, and various modifications and changes can be made to each detail in this specification based on different perspectives and applications without departing from the spirit of the present invention. The following embodiments will further explain the technical content related to the present invention, but the disclosed content is not intended to limit the scope of the utility model registration claims of the present invention. The explanation is as follows.

[0017] As shown in FIG. 1, the oil mist collection system 100 according to the first embodiment of the present invention includes a housing 1, a wind pressure type pushing mechanism 2, a non-powered fan 3, and a filtering and collecting mechanism 4.

[0018] Inside the housing 1, there is a flow path for passing airflow carrying oil mist. An intake port 11 and an exhaust port 12 are provided at both ends of the flow path, respectively. The flow path runs from the intake port 11 to the exhaust port 12. The intake port 11 is usually intended to connect to the exhaust port of the oil mist generating mechanism, but is not limited to this. The shape of the housing 1 is not limited to that shown in the figure, and various other shapes may be used. The flow path inside the housing 1 may be designed to be straight or have various curves as needed. The housing 1 is preferably made of a strong, lightweight, and corrosion-resistant metal or alloy material.

[0019] The wind pressure pushing mechanism 2 is installed in the flow path and is positioned so that gas upstream of the wind pressure pushing mechanism 2 is pushed downstream of the wind pressure pushing mechanism 2. The wind pressure pushing mechanism 2 may be, for example, a bladed motor. When the motor starts to rotate, the gas upstream of the motor is pushed downstream. In this way, gas begins to flow in the flow path. The removal of gas upstream of the motor creates a pressure difference, allowing external oil mist to enter the housing 1 through the air intake 11. Because the air intake 11 is installed on one side of the housing 1 and is eccentric to the wind pressure pushing mechanism 2, the oil mist is pushed out by the centrifugal force of the wind pressure pushing mechanism 2, rotates along the inner wall, and collides with the inner wall of the housing 1. Oil droplets mixed in the oil mist adhere to the inside of the housing 1 and are blocked.

[0020] The unpowered fan 3 is installed in the flow path and is located upstream of the wind pressure type extrusion mechanism 2, i.e., between the wind pressure type extrusion mechanism 2 and the air intake 11. The unpowered fan 3 is not directly connected to the wind pressure type extrusion mechanism 2 but is driven by the airflow from the air intake 11. When the unpowered fan 3 is driven by wind power, it continuously transports the oil mist downstream to the wind pressure type extrusion mechanism 2. The unpowered fan 3 has multiple blades. When oil droplets in the oil mist come into contact with the blades, they adhere to the blades and are collected by the unpowered fan 3 before entering the wind pressure type extrusion mechanism 2. The collected oil droplets are blown to the inner wall of the housing 1 by centrifugal force due to the rotation of the unpowered fan 3 and are attracted by gravity to accumulate on the bottom surface 13 (as shown in Figure 4). Furthermore, the unpowered fan 3 can increase the intake volume and flow velocity of the wind pressure type extrusion mechanism 2.

[0021] As shown in FIGS. 1 and 3 , the filter collection mechanism 4 includes at least a filter material 42, which is located downstream of the wind-pressure pushing mechanism 2. In this embodiment, the filter collection mechanism 4 is located outside the flow path and connected to the exhaust port 12 to facilitate removal and replacement. However, the present invention is not limited to this. The filter collection mechanism 4 may be located within the housing 1 and positioned within the flow path. Alternatively, the filter collection mechanism 4 may be considered a connection between the housing 1 and the exhaust port 12. The filter material 42 may have any shape suitable for capturing oil mist in the flow path. In the most basic embodiment, the filter material 42 may be flat and directly cover the exhaust port 12. After passing through the unpowered fan 3 and the wind-pressure pushing mechanism 2 in order to produce a relatively clean oil mist (one with a lower content of oil or other impurities), it is filtered through the filter material 42. The filter material 42 may have a three-layer structure, with the first layer being a polypropylene (PP) filter cloth for blocking oil, the second layer being activated carbon for removing odors, and the third layer being a high-efficiency particulate air (HEPA) filter. The first two layers act as a protective mechanism, extending the lifespan of the third layer's HEPA filter. In this embodiment, as shown in FIG. 3, the oil mist airflow pushed out by the pneumatic pushing mechanism 2 ultimately rises, first hitting the top plate 44, and then turning back to pass through the cylindrical filter material 42. This design allows the airflow to be dispersed and pass through the filter material 42, while the top plate 44 also serves to capture oil. The top plate 44 may be designed as part of the filter collection mechanism 4 or as an extension of the housing 1, if desired.

[0022] As a result, in this invention, the filter material 42, which was previously installed upstream, is moved to the downstream end of the oil mist recovery system 100, thereby reducing the replacement frequency of the consumable filter material 42 and lowering recovery costs. On the other hand, because most of the oil mist is captured by collision at the front of the oil mist recovery system 100, the amount of oil that can be recovered and reused increases relatively, which indirectly increases the reuse rate of recovered oil.

[0023] 1 and 2, the oil mist recovery system 100 further includes at least one collision plate 5 disposed downstream of the wind pressure pushing mechanism 2 and upstream of the filter material 42. The function of the collision plate 5 is to increase the degree of bending of the flow path, so that the oil mist gas pushed out by the wind pressure pushing mechanism 2 does not flow directly to the exhaust port 12, but instead changes direction and is captured by the collision plate 5, blocking the oil droplets. Specifically, the collision plate 5 has a collision portion 51 and an opening 52. Because the outlet 21 pushed out from the wind pressure pushing mechanism 2 faces the collision portion 51 rather than the opening 52, the oil mist tends to first collide with the solid collision portion 51, then change direction and pass through the opening 52 and the collision portion 51.

[0024] In this embodiment, there are multiple collision plates 5, and they are not limited to the same shape, and the openings 52 of each blocking plate collision plate 5 are offset from each other. For example, a part of the inner wall of the housing 1 where the outlet 21 is provided may also be considered as the collision plate 5, or a part of the housing 1 having the exhaust port 12 facing the filtering and collecting mechanism 4 may also be considered as the collision plate 5.

[0025] In another embodiment, the collision plate 5 is configured to be rotatable relative to the housing 1 by passively receiving wind. For example, a relatively rotatable rotation shaft (not shown) is provided inside the housing 1, and one or more collision plates 5 are connected to the rotation shaft. When the airflow of oil mist pushed out by the wind pressure pushing mechanism 2 flows toward the collision plate 5, it can rotate the collision plate 5 relatively. Preferably, the openings 52 of each collision plate 5 are offset from each other, thereby improving the oil mist collection effect.

[0026] Furthermore, in this embodiment, as shown in FIGS. 1 and 3, the filtration and collection mechanism 4 further includes a porous inner barrel 41 filled with a filter material 42. The porous inner barrel 41 has multiple inner holes 411 penetrating the barrel wall, each having a diameter of, for example, 5 mm. The oil mist airflow pushed out by the wind pressure pushing mechanism 2 selectively passes through the collision plate 5, rises, hits the top plate 44, and then turns back to pass through the cylindrical porous inner barrel 41 and the filter material 42. The porous inner barrel 41 helps the filter material to first block oil droplets. Oil droplets adhering to the inner wall of the porous inner barrel 41 are attracted by gravity and accumulate at the bottom of the housing 1.

[0027] 1 and 3, the filter collection mechanism 4 further includes a porous outer barrel 43 surrounded by a filter material 42. The porous outer barrel 43 has a plurality of outer holes 431 penetrating the barrel wall, each having a diameter of, for example, 5 mm. The oil mist airflow pushed out by the wind pressure pushing mechanism 2 selectively passes through the collision plate 5, rises, hits the top plate 44, and then turns back to pass through the cylindrical filter material 42 and the porous outer barrel 43. The porous outer barrel 43 further blackens the oil droplets after passing through the filter material 42, protecting the filter material 42 from external contamination.

[0028] In this embodiment, the filtration and collection mechanism 4 includes a porous inner barrel 41 and a porous outer barrel 43, which can clamp and secure the filter material 42 and can be easily removed together. However, the present invention is not limited to this, and the filtration and collection mechanism 4 may include only one of the porous inner barrel 41 and the porous outer barrel 43, or neither.

[0029] In this embodiment, the filter collecting mechanism 4 is detachably connected to the housing 1. It is preferable that each part of the housing 1 is also detachable for cleaning, but the present invention is not limited thereto.

[0030] Furthermore, in this embodiment, as shown in Figure 4, the housing 1 has an oil collection outlet 14 and a bottom surface 13 that slopes toward the oil collection outlet 14. The slope of the bottom surface 13 refers to the slope with respect to the floor surface on which the oil mist collection system 100 is located. Oil droplets that have collected on the bottom surface 13 flow to the oil collection outlet 14 under the influence of gravity, and can be collected at the oil collection outlet 14. Therefore, most of the oil droplets collected by the housing 1, the wind pressure type pushing mechanism 2, and the unpowered fan 3 can be collected directly without passing through the filter material 42. This reduces wear on the filter material 42 while also allowing the collected oil to be efficiently reused.

[0031] Furthermore, in this embodiment, the housing 1 further has an oil recovery pipe 15, one end of which is connected to the oil recovery outlet 14. The purpose of installing the oil recovery pipe 15 is to collect oil droplets in areas of the housing 1 where it is difficult to directly remove them, and to introduce them into the oil recovery outlet 14.

[0032] Furthermore, in this embodiment, as shown in FIG. 1 , the oil mist recovery system 100 further includes a pressure gauge 61 and a power assembly 62. The pressure gauge 61 is provided in the flow path and is located downstream of the wind pressure pushing mechanism 2. The power assembly 62 is provided with a display for displaying various information, such as input voltage, power, and operating time. The display is, for example, an electronic device such as an LCD panel. The pressure gauge 61 may be a mechanical type (e.g., a pointer or float with a scale) and can measure the current wind pressure in the flow path without additional power input. Alternatively, the pressure gauge 61 may be an electronic type that senses the wind pressure in the flow path, generates a signal, and connects the signal to the power assembly 62, so that the value measured by the pressure gauge 61 is displayed on the display of the power assembly 62. The pressure gauge 61 can detect the air pressure between the wind pressure pushing mechanism 2 and the filter material 42. If the displayed air pressure is higher than a threshold, it indirectly indicates that the filter material 42 is clogged and needs to be replaced. Any of the components that require power supply, such as the pneumatic push-out mechanism 2 and the electronic pressure gauge 61, may be electrically connected to the power distribution assembly 62 so that power can be supplied. The power distribution assembly 62 may also have some terminals left for connecting or using other power devices that will be added in the future.

[0033] Furthermore, in this embodiment, as shown in Figure 1, the oil mist collection system 100 further includes a set of cushions 7 provided below the housing 1. This reduces the impact of vibration when the oil mist collection system 100 is attached to other equipment. Furthermore, when the oil mist collection system 100 is placed on the floor and needs to be moved, the cushions 7 may be replaced with a set of movable wheels with supporters to facilitate movement. Both the cushions 7 and the set of movable wheels can be attached to the bottom of the housing 1 by screws or other commonly removable methods.

[0034] In this embodiment, the oil mist recovery system 100 employs a cyclone-type oil recovery system. The unpowered fan 3 is installed below the wind pressure type extrusion mechanism 2, or the unpowered fan 3 and the wind pressure type extrusion mechanism 2 are arranged in the direction of gravity. However, the present invention is not limited to this, and the arrangement and installation positions of the unpowered fan 3 and the wind pressure type extrusion mechanism 2 can be changed as required.

[0035] 5 and 6, the oil mist collection system 100a of the second embodiment proposed in the present invention comprises a housing 1, a wind pressure type pushing mechanism 2, a non-powered fan 3 and a filtration and collection mechanism 4, and may optionally comprise at least one collision plate 5.

[0036] The main differences between the oil mist collection system 100a of the second embodiment and the oil mist collection system 100 of the first embodiment are as follows. To reduce overall size, the internal layout has been modified. The unpowered fan 3 and the wind pressure-type extrusion mechanism 2 are arranged horizontally, and the air intake 11 is located on one side of the housing 1 and not eccentric to the wind pressure-type extrusion mechanism 2. This allows the oil mist to directly impinge on the unpowered fan 3 at a faster speed. In contrast, in the oil mist collection system 100a of the second embodiment, a steel wire ball module 8 may be installed upstream of the unpowered fan 3. The steel wire ball module 8, which includes tangled stainless steel wires, is installed upstream of the unpowered fan 3, allowing it to capture the oil mist first. Furthermore, the tangled stainless steel wires significantly increase the contact area. After passing through the steel wire ball module 8, the cleaner airflow passes through the unpowered fan 3. This reduces the burden on the unpowered fan 3.

[0037] For ease of removal and cleaning, the steel wire ball module 8 is preferably installed near the air intake 11 so that it can be removed. The steel wire ball module 8 is physically and chemically stable and easy to clean, which further reduces the frequency of replacing consumable filter material and lowers recovery costs. The steel wire ball module 8 can also be applied to the first embodiment.

[0038] Although the present invention has been disclosed through the above embodiments, those skilled in the art will understand that the above embodiments are merely for the purpose of illustrating the present invention and should not be construed as limiting the scope of the present invention. It should be noted that all equivalent modifications and replacements of the above embodiments should be included within the scope of the present invention. Therefore, the scope of protection of the present invention is limited by the scope of the utility model registration claims. [Explanation of symbols]

[0039] 100 Oil Mist Collection System 100a Oil Mist Collection System 1 chassis 11 Air intake 12 exhaust port 13 Bottom 14 Oil recovery outlet 15 Oil recovery pipe 2. Wind pressure extrusion mechanism 21 Exit 3. Unpowered fan 4. Filtration and collection mechanism 41 Porous inner barrel 411 Inner hole 42 Filter material 43 Porous outer barrel 431 Outer hole 44 Top plate 5 Collision plate 51 Collision part 52 Opening 61 Pressure gauge 62 Power Assembly 7 cushions 8 Steel Wire Ball Module

Claims

1. a housing having a flow path therein, and an intake port and an exhaust port at both ends of the flow path; a wind pressure pushing mechanism provided in the flow path so that gas upstream of the wind pressure pushing mechanism is pushed downstream of the wind pressure pushing mechanism; a non-powered fan provided in the flow path and located upstream of the wind pressure type pushing mechanism; a filtering and collecting mechanism including at least a filter material, the filter material being disposed relatively downstream of the wind pressure type pushing mechanism; Oil mist recovery system, including:

2. 2. The oil mist recovery system according to claim 1, further comprising at least one collision plate provided downstream of the wind pressure pushing mechanism and upstream of the filter material, the collision plate having a collision portion and an opening.

3. The oil mist recovery system according to claim 2 , wherein there are a plurality of the collision plates, and the openings of the collision plates are offset from one another.

4. The oil mist recovery system according to claim 1 , wherein the filtering and collecting mechanism further includes a porous inner barrel surrounded by the filter material.

5. The oil mist recovery system according to claim 1 , wherein the filtering and collecting mechanism further includes a porous outer barrel surrounded by the filter material.

6. The oil mist recovery system according to claim 1 , wherein the filtering and collecting mechanism is connected to the housing so as to be detachable.

7. The oil mist collection system of claim 1 , wherein the housing has an oil collection outlet and a bottom surface that slopes toward the oil collection outlet.

8. The oil mist recovery system according to claim 7 , wherein the housing has an oil recovery pipe, one end of which is in communication with the oil recovery outlet.

9. 9. The oil mist recovery system according to claim 8, further comprising a power assembly and a pressure gauge, wherein the power assembly is provided with a display, the pressure gauge is provided in the flow path and is located downstream of the wind pressure type pushing mechanism, and the power assembly connects a signal to the pressure gauge and displays the value measured by the pressure gauge on the display.

10. 2. The oil mist recovery system of claim 1, further comprising a steel wire ball module installed upstream of the unpowered fan.

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