Cabinet type oil mist separator

Abstract

The utility model discloses a cabinet type oil mist separator, and relates to the technical field of oil mist separation, and the cabinet type oil mist separator comprises a mounting shell provided with an air inlet, an air outlet and an oil outlet; the primary filtering device is arranged in the mounting shell, is communicated with the air inlet and comprises a filtering layer and a flow deflector, the filtering layer is obliquely arranged relative to the mounting shell, the flow deflector is arranged on the side, close to the air inlet, of the filtering layer, and the flow deflector is obliquely arranged relative to the filtering layer; the oil discharging device is arranged below the primary filtering device and is communicated with the oil discharging opening; and the vacuum fan is arranged in the mounting shell, is connected with the primary filtering device and the air outlet, and is used for generating negative pressure to drive the oil mist to flow in the separator. By arranging the flow deflectors, the oil can be guided to the oil discharge device on the filtering layer, so that the situation that the filtering efficiency is reduced due to oil accumulation is avoided, and the filtering efficiency of the oil mist is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of oil mist separation, in particular to a cabinet type oil mist separator. BACKGROUND

[0002] The oil mist separator, also known as an oil mist recovery machine or an oil mist collector, is only different in name. The oil mist separator is installed on CNC machining centers, cleaning machines, die casting machines, CNC lathes and various machining equipment, and can absorb the oil mist in the machining cavity to purify the air and protect the health of workers. The existing cabinet type oil gas separator usually adopts a multi-stage filtering mode to realize oil gas separation. In order to further improve the separation efficiency, a centrifugal filtering system or other types of fine filtering devices are often equipped to enhance the separation effect.

[0003] The utility model patent publication No. CN208711339U discloses a vertical oil mist purification device, which comprises a cabinet type machine body, a horizontal partition plate is arranged in the cabinet type machine body, the horizontal partition plate divides the cabinet type machine body into upper and lower box bodies, the upper box body is provided with a vertical partition plate, the vertical partition plate divides the upper box body into a flue area and a purification area, the purification area is sequentially provided with a rotating mesh disc, a filter screen one, an electrostatic filter, a filter screen two, a fan, a filter screen three, a ventilation mesh plate and an air outlet from bottom to top, the rotating mesh disc is fixed on the horizontal partition plate, and the filter screen one and the filter screen two are respectively fixed at the bottom and the top of the electrostatic filter. The vertical oil mist purification device can effectively remove the particles in the air in the mechanical processing workshop, which are volatilized due to the collision of metal cooling oil and metal cutting fluid, so as to avoid the influence of the particles on the production equipment and the workers in the workshop. However, the horizontally placed filter screen is prone to accumulate oil on the filter screen during the oil mist filtering process, which reduces the filtering efficiency and is not conducive to efficient oil mist separation. SUMMARY

[0004] The purpose of the present application is to provide a cabinet type oil mist separator to solve the problem of oil accumulation on the filter screen, which reduces the filtering efficiency.

[0005] The cabinet type oil mist separator provided by the present application adopts the following technical scheme:

[0006] A cabinet type oil mist separator comprises:

[0007] The installation shell is provided with an air inlet, an air outlet and an oil discharge port;

[0008] The first filtering device is arranged in the installation shell and is connected to the air inlet, and comprises a filter layer and a flow guide plate. The filter layer is arranged obliquely relative to the installation shell, and the flow guide plate is arranged on the side of the filter layer close to the air inlet and is arranged obliquely relative to the filter layer.

[0009] The oil discharge device is arranged below the first filtering device and is connected to the oil discharge port.

[0010] A vacuum fan is arranged in the mounting shell and connected with the primary filtering device and the air outlet, and is used to generate negative pressure to drive the oil mist to flow in the oil mist separator.

[0011] By using the above technical scheme, the vacuum fan sucks the oil mist from the air inlet, filters the oil mist through the primary filtering device, discharges the gas from the air outlet, and discharges the oil from the oil discharge port through the oil discharge device. The filtering layer is arranged obliquely, and the flow guide plate is also arranged obliquely relative to the filtering layer. When the oil is filtered by the filtering layer, the oil can flow down along the oblique flow guide plate, and the flow guide plate can form a dead angle with little influence on the airflow. The airflow along the flow guide plate can push the oil to the dead angle, and the oil can flow down along the dead angle. By arranging the flow guide plate, the oil on the filtering layer can be guided to the oil discharge device, thereby avoiding the accumulation of oil and reducing the filtering efficiency, and improving the filtering efficiency of the oil mist.

[0012] Optionally, the oil mist separator further comprises a secondary filtering device, the secondary filtering device comprising a centrifugal filter tube, a centrifugal motor and a centrifugal support, the centrifugal support being connected with the mounting shell, the centrifugal filter tube being rotatably connected with the centrifugal support, the centrifugal motor driving the centrifugal filter tube to rotate, the centrifugal filter tube being connected with the primary filtering device on the outside, and the centrifugal filter tube being connected with the vacuum fan on the inside.

[0013] By using the above technical scheme, the centrifugal filter tube has an adsorbing material for absorbing oil mist particles in the middle. When the air flows through the centrifugal filter tube, the residual oil particles in the air can be absorbed and removed. The centrifugal filter tube is connected with the vacuum fan on the inside, so that the airflow can flow from the outside to the inside of the centrifugal filter tube. By rotating the centrifugal filter tube, the airflow in the centrifugal filter tube is driven to rotate. Lighter air tends to gather in the middle, while oil particles are left in the centrifugal filter tube, thereby improving the filtering efficiency.

[0014] Optionally, the centrifugal support has a communication port for communicating the outside of the centrifugal filter tube with the filtering layer.

[0015] By using the above technical scheme, since the centrifugal filter tube is connected with the primary filtering device on the outside through the centrifugal support, the communication port is arranged on the centrifugal support, and the airflow can flow normally in the oil mist separator.

[0016] Optionally, the oil mist separator further comprises a HEPA filter layer, the HEPA filter layer being arranged between the centrifugal filter tube and the vacuum fan.

[0017] By using the above technical scheme, the HEPA filter layer is added, which can further purify the gas after secondary filtering, effectively remove small particulate matter, and make the discharged gas cleaner.

[0018] Optionally, the primary filtering device, the secondary filtering device and the vacuum fan are arranged from bottom to top in the mounting shell.

[0019] By adopting the technical scheme, the gas can pass through the primary filter device to filter most of the oil, and the secondary filter device can filter small oil particles, so that the oil mist separation is more thorough and efficient.

[0020] Optionally, the installation housing has a repair door.

[0021] By adopting the technical scheme, the installation housing with the repair door is provided, so that the internal components of the equipment are convenient to overhaul and maintain, and the equipment maintenance efficiency and convenience are improved.

[0022] Optionally, a pressure sensor is arranged between the centrifugal filter pipe and the vacuum fan.

[0023] By adopting the technical scheme, the pressure sensor can monitor the pressure condition, when the centrifugal filter pipe is blocked, the air pressure will change, the pressure is sensed by the pressure sensor, whether the oil mist separator is faulty can be judged, and the safety performance is improved.

[0024] Optionally, the oil discharge port is provided with a filter screen.

[0025] By adopting the technical scheme, the filter screen arranged at the oil discharge port can effectively block larger particle impurities from being discharged with the cutting oil, and the purity of the cutting oil is improved.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. The vacuum fan sucks the oil mist from the air inlet, filters the gas part from the air outlet after passing through the primary filter device, and discharges the oil from the oil discharge port through the oil discharge device. The filter layer is inclined, and the deflector is also inclined relative to the filter layer. When the oil is filtered by the filter layer, it can flow down along the inclined deflector, and the deflector can form a dead angle with little air flow influence. The air flow along the deflector can push the oil to the dead angle, and the oil can flow down along the dead angle. By providing the deflector, the oil can be guided to the oil discharge device on the filter layer, thereby avoiding oil accumulation to reduce the filtering efficiency, and improving the filtering efficiency of the oil mist.

[0028] 2. The centrifugal filter pipe has an adsorbent material for absorbing oil mist particles. When air flows through the centrifugal filter pipe, the residual oil particles in the air can be absorbed and removed. The centrifugal filter pipe is connected to the vacuum fan, so that the air flow can flow from the outside to the inside of the centrifugal filter pipe, and by rotating the centrifugal filter pipe, the air flow in the centrifugal filter pipe is rotated. Lighter air tends to gather in the middle, while oil particles are left in the centrifugal filter pipe, thereby improving the filtering efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0030] Figure 2 is a sectional structure schematic diagram of an embodiment of the present application;

[0031] Figure 3 is a structure schematic diagram of a primary filtering device of an embodiment of the present application.

[0032] Reference signs: 1, mounting housing; 11, air inlet; 12, air outlet; 13, oil discharge port; 14, repair door; 15, pressure sensor; 16, filter screen; 2, primary filtering device; 21, filtering layer; 22, flow guide vane; 3, secondary filtering device; 31, centrifugal filter pipe; 32, centrifugal motor; 33, centrifugal support; 34, communication port; 35, centrifugal bearing; 4, HEPA filter layer; 5, oil discharge device; 6, vacuum fan. DETAILED DESCRIPTION

[0033] The present application is further described in detail below with reference to the accompanying drawings.

[0034] A cabinet type oil mist separator, referring to Figure 1 , comprises a mounting housing 1, a primary filtering device 2, a secondary filtering device 3, a HEPA filter layer 4, an oil discharge device 5 and a vacuum fan 6, wherein the mounting housing 1 is the mounting equipment of the oil mist separator, and the rest components are all mounted in the mounting housing 1. The mounting housing 1 is provided with an air inlet 11, an air outlet 12 and an oil discharge port 13, wherein the air inlet 11 and the oil discharge port 13 are arranged on the lower side of the mounting housing 1, the air outlet 12 is arranged above the mounting housing 1, the air inlet 11 is used for the oil mist to enter the mounting housing 1, after separation, the oil is discharged from the oil discharge port 13, and the filtered gas is discharged from the air outlet 12.

[0035] Referring to Figure 2 and 3In the installation housing 1, the oil discharge device 5 is arranged at the bottom, and above it are arranged in sequence the first filter device 2, the second filter device 3, the HEPA filter layer 4 and the vacuum fan 6. The vacuum fan 6 sucks air from top to bottom, so that the oil mist moves from bottom to top in the oil mist separator, and the filtered oil flows down into the oil discharge device 5 by gravity. The first filter device 2 comprises an inclined filter layer 21, which can separate most of the oil in the oil mist, so that only fine oil droplets remain in the filtered air flow. The filter layer 21 is provided with a flow guide plate 22 inclined relative to the filter layer 21. The inclined flow guide plate 22 can form a dead angle with the filter layer 21, in which the oil filtered out can flow down along the flow guide plate 22, so as to reduce the influence of the upward flowing air on the oil, and the oil can quickly flow down from the filter layer 21, avoiding the influence of oil accumulation on oil mist filtration. The oil discharge device 5 is arranged below the filter layer 21, and is used to collect the oil flowing down from the flow guide plate 22. The oil discharge device 5 is connected to the oil discharge port 13, and can discharge the oil from the oil discharge port 13. The oil discharge port 13 is provided with a filter screen 16, which can filter out large particles, so that the cutting oil can be recycled.

[0036] With reference to Figure 2 The second filter device 3 is arranged above the first filter device 2 and above the filter layer 21. The second filter device 3 comprises a centrifugal filter pipe 31, a centrifugal motor 32 and a centrifugal support 33. The centrifugal support 33 is connected to the inner side of the installation housing 1. The centrifugal filter pipe 31 is rotatably connected to the centrifugal support 33 by a centrifugal bearing 35. The upper part of the centrifugal filter pipe 31 is connected to the centrifugal motor 32, which can drive the centrifugal filter pipe 31 to rotate. The centrifugal filter pipe 31 has a through hole for air flow, and the clamping wall of the centrifugal filter pipe 31 is provided with adsorbent capable of absorbing oil. The inner side of the centrifugal filter pipe 31 is connected to the vacuum fan 6. The air flow flows from the outer side of the centrifugal filter pipe 31 to the inner side of the centrifugal filter pipe 31, and then continues to flow upward. Since the centrifugal filter pipe 31 rotates, the air flow in the clamping wall of the centrifugal filter pipe 31 is separated from the oil droplets due to the centrifugal force. The air with lighter mass gathers in the middle, and the oil droplets are left in the centrifugal filter pipe 31, further improving the filtering effect.

[0037] With reference to Figure 2, centrifugal filter tube 31 inside upper side is provided with HEPA filter layer 4, HEPA filter layer 4 can remove the fine impurities in the airflow, so that the cleanliness of the gas discharged from the oil mist separator is improved. The upper side of HEPA filter layer 4 is connected with vacuum fan 6, and the vacuum fan 6 is connected with the exhaust port. The clean gas obtained by separation and filtration is discharged from the exhaust port of the oil mist separator. HEPA filter layer 4 and centrifugal filter tube 31 are directly provided with pressure sensor 15, which is used for monitoring the pressure of the corresponding area. When blockage occurs, the pressure will change due to the operation of vacuum fan 6, so that the failure of the oil mist separator can be monitored by monitoring the pressure change.

[0038] Referring to Figure 1 , the side of the installation shell 1 is provided with a repair door 14, which can be opened to expose the primary filter device 2 and the secondary filter device 3, so as to facilitate the repair or adjustment of the inside of the installation shell 1, and the replacement of the filter layer 21 and the centrifugal filter tube 31 can be performed, so that the operation of the oil mist separator is more convenient.

[0039] The implementation principle of the embodiment of the present application is that the negative pressure formed by the vacuum fan 6 causes the oil mist to be sucked from the air inlet 11 through the primary filter device 2 and the secondary filter device 3, so that the oil droplets are separated from the gas through the separation and filtration of the primary filter device 2 and the secondary filter device 3, and the fine particles in the air are filtered out through the HEPA filter layer 4, so that the gas with high cleanliness is separated.

[0040] The embodiments of the specific embodiment are the preferred embodiments of the present application, and are not limited to the protection scope of the present application. The same parts are indicated by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A cabinet oil mist separator characterized by, The utility model relates to a kind of oil mist separator, including: Mounting shell (1) is equipped with air inlet (11), air outlet (12) and oil outlet (13); Primary filter device (2) is located in the mounting shell (1), and is communicated with the air inlet (11), including filter layer (21) and flow guide vane (22), the filter layer (21) is arranged obliquely relative to the mounting shell (1), the flow guide vane (22) is located in the filter layer (21) side close to the air inlet (11), the flow guide vane (22) is arranged obliquely relative to the filter layer (21); Oil discharge device (5) is located below the primary filter device (2), and is communicated with the oil outlet (13); Vacuum fan (6) is located in the mounting shell (1), and is connected with the primary filter device (2) and the air outlet (12), for generating negative pressure to drive oil mist to flow in separator.

2. A cabinet oil mist separator according to claim 1, characterized in that Also including secondary filter device (3), the secondary filter device (3) includes centrifugal filter tube (31), centrifugal motor (32) and centrifugal support (33), the centrifugal support (33) is connected mounting shell (1), the centrifugal filter tube (31) is rotatably connected with the centrifugal support (33), the centrifugal motor (32) drives the centrifugal filter tube (31) rotation, the centrifugal filter tube (31) outside is communicated with the primary filter device, the centrifugal filter tube (31) inside is connected with the vacuum fan (6).

3. A cabinet oil mist separator according to claim 2, characterised in that The centrifugal support (33) has communication port (34), to communicate the centrifugal filter tube (31) outside and the filter layer (21).

4. A cabinet oil mist separator according to claim 2, characterised in that Also including HEPA filter layer (4), the HEPA filter layer (4) is located between the centrifugal filter tube (31) and the vacuum fan (6).

5. A cabinet oil mist separator according to claim 2, characterized in that The primary filter device (2), secondary filter device (3) and vacuum fan (6) are arranged from bottom to top in the mounting shell (1).

6. A cabinet oil mist separator according to claim 1, characterized in that The mounting shell (1) has repair door (14).

7. A cabinet oil mist separator according to claim 2, characterized in that Pressure sensor (15) is arranged between the centrifugal filter tube (31) and vacuum fan (6).

8. A cabinet oil mist separator according to claim 1, characterized in that The oil outlet (13) is equipped with filter screen (16).

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