Filter for oil mist recovery system

Abstract

The utility model discloses a filter for an oil mist recovery system, which comprises a vacuum device, a shell and a retractable mechanism, an air outlet on one side of the shell is communicated with the input end of the vacuum device through a pipeline, the other side of the shell is provided with an air inlet, the retractable mechanism is installed in the shell, and a filter belt is wound outside the retractable mechanism. The filter belt is matched with the air outlet to form a filter area; after the filtering area is saturated by filtering, the retracting and releasing mechanism is suitable for driving the filtering belt to retract and release, so that the filtering belt is matched with the air outlet to form a new filtering area. The oil mist recovery system has the beneficial effects that by arranging the filter belt, the filter belt can filter airflow in the oil mist recovery system during vacuumizing; the filter belt can be retracted and released under the action of the retracting and releasing mechanism so as to realize a continuous filtering effect, and the filter belt does not need to be replaced by shutdown, so that the continuity and the stability of the oil mist recovery system are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of filtering equipment, in particular to a filter for an oil mist recovery system. BACKGROUND

[0002] The oil mist recovery system is used for treating the oil mist exhaust gas of a cold rolling foil rolling mill, mainly comprises the following subsystems: an absorption system, a degassing system, a filtering unit, a heat exchange unit, an analysis system, a finished product unit, a vacuum unit, a heating unit and a control system; the heating and vacuum units are key equipment of the system, and the two parts are related to the success or failure of the oil mist recovery; the existing vacuum extraction generally adopts a configuration of two-stage Roots pumps plus one-stage liquid ring pumps.

[0003] When the vacuum equipment is used for vacuumizing the oil mist recovery system, it is known that the airflow contains oil mist and impurities, which will adhere to the vacuum equipment and pipelines, affecting the service life and effect; therefore, the filter for the oil mist recovery system is provided to solve the above technical problems. CONTENT OF THE INVENTION

[0004] One of the purposes of the application is to provide a filter for an oil mist recovery system.

[0005] To achieve the above purposes, the technical scheme adopted by the application is as follows: a filter for an oil mist recovery system, comprising a vacuum equipment, a shell and a take-up mechanism, a gas outlet on one side of the shell is communicated with an input end of the vacuum equipment through a pipeline, and the other side of the shell has a gas inlet, the take-up mechanism is installed in the shell and externally wound with a filter belt, and the filter belt and the gas outlet cooperate to form a filtering area; when the filtering area is saturated, the take-up mechanism is adapted to drive the filter belt to move in a take-up and pay-off manner, so that the filter belt and the gas outlet cooperate to form a new filtering area.

[0006] Preferably, the take-up mechanism comprises a take-up roller, a pay-off roller and a driving device, the take-up roller and the pay-off roller are both vertically rotatably installed in the shell and located on both sides of the gas outlet, the two ends of the filter belt are respectively connected and matched with the take-up roller and the pay-off roller, and the driving device is installed in the shell and connected and matched with the output ends of the take-up roller and the pay-off roller; the driving device is adapted to drive the take-up roller and the pay-off roller to rotate synchronously, thereby realizing the take-up and pay-off movement of the filter belt.

[0007] Preferably, the driving device comprises a motor and a transmission assembly, the motor is installed at the top end of the shell and connected with the input end of the transmission assembly, and the output end of the transmission assembly is the output end of the driving device.

[0008] Preferably, the transmission assembly comprises a worm and a pair of worm gears, the worm gears are installed on the top ends of the winding roller and the unwinding roller, the worm is horizontally rotatably installed on the top end of the shell and connected with the output end of the motor, and the worm is engaged with the worm gears.

[0009] Preferably, a hollow plate is installed on the inner wall of one side of the shell and corresponds to the air outlet, and the filter belt is adapted to pass through the hollow plate; and the hollow plate is adapted to support and limit the filter belt during filtering.

[0010] Preferably, a wind tube is jointly installed on the side outer periphery of the hollow plate and the air inlet, and the wind tube and the filtering area form a flow channel, so that the airflow in the flow channel is isolated from the winding roller and the unwinding roller.

[0011] Preferably, a collecting box penetrating through the bottom end of the shell is communicatively installed on the bottom end of the wind tube close to the filter belt, and the collecting box is adapted to collect the impurities after filtering.

[0012] Preferably, a sealing ring is arranged on the outer part of each side of the hollow plate, and the sealing ring is in abutting cooperation with the filter belt.

[0013] Compared with the prior art, the application has the beneficial effects that:

[0014] The filter belt can filter the airflow in the oil mist recovery system during vacuumizing, and the filter belt can be moved under the action of the winding and unwinding mechanism to realize continuous filtering effect without stopping and replacing the filter belt, thereby improving the continuity and stability of the oil mist recovery system. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model.

[0016] Figure 2 It is a sectional structure schematic view of the utility model.

[0017] Figure 3 It is a shell internal structure schematic view of the utility model.

[0018] Figure 4 It is a winding and unwinding mechanism specific structure schematic view of the utility model.

[0019] Figure 5 It is a hollow plate structure schematic view of the utility model.

[0020] In the diagram: 1. Vacuum equipment; 2. Housing; 3. Pipeline; 4. Air inlet; 5. Take-up and unwinding mechanism; 501. Take-up roller; 502. Unwinding roller; 503. Drive unit; 5031. Motor; 5032. Transmission assembly; 50321. Worm gear; 50322. Worm wheel; 6. Collection box; 7. Air outlet; 8. Air duct; 9. Filter belt; 10. Perforated plate; 11. Sealing ring. Detailed Implementation

[0021] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0023] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0024] One preferred embodiment of this application, such as Figures 1 to 5 As shown, a filter for an oil mist recovery system includes a vacuum device 1, a housing 2, and a take-up and release mechanism 5. An air outlet 7 on one side of the housing 2 is connected to the input end of the vacuum device 1 through a pipe 3, and an air inlet 4 is provided on the other side of the housing 2. The take-up and release mechanism 5 is installed inside the housing 2 and a filter belt 9 is wound around its outside. The filter belt 9 and the air outlet 7 cooperate to form a filtration zone.

[0025] Understandably, when the oil mist recovery system is evacuated, the airflow enters from the air inlet 4 of the housing 2 under the action of the vacuum device 1, and is then drawn away from the air outlet 7 and the pipe 3. Under the action of the filter belt 9, the airflow is filtered when it flows out of the air outlet 7. That is, some oil mist and impurities in the airflow are captured by the filter belt 9, thereby preventing oil mist and impurities from adhering to the vacuum device 1 and the pipe 3, extending their service life, and improving the filtration effect of the oil mist recovery system.

[0026] It should be understood that during the long-term filtration process of the filter belt 9, the filtration zone (i.e., the filter belt 9) will reach a saturation state: the filter holes on the filter belt 9 will be blocked by oil mist and impurities, thus affecting the airflow effect. At this time, the retraction mechanism 5 can be activated, and the filter belt 9 will move under the action of the retraction mechanism 5. In simple terms, the part of the filter belt 9 that was originally filtered moves and is misaligned with the air inlet 4, while the new filter belt 9 cooperates with the air outlet 7 to form a new filtration zone; this process is repeated to achieve a continuous filtration effect without stopping the machine to replace the filter belt 9, thereby improving the continuity and stability of the oil mist recovery system. In the existing technology, filter plates are usually used to filter oil mist, and the filter plates need to be disassembled and replaced when they are saturated. This design uses a retractable filter belt 9, which greatly reduces the replacement cycle of the filter belt 9 for the staff, thereby reducing the labor intensity of the staff.

[0027] As a further description of the above embodiments: as Figure 3 As shown, the take-up and unwinding mechanism 5 includes a take-up roller 501, an unwind roller 502, and a drive device 503. The take-up roller 501 and the unwind roller 502 are both vertically rotatably installed inside the housing 2 and located on both sides of the air outlet 7. The two ends of the filter belt 9 are connected to the take-up roller 501 and the unwind roller 502 respectively. The drive device 503 is installed in the housing 2 and its output end is connected to the take-up roller 501 and the unwind roller 502.

[0028] Understandably, when the filter belt 9 is being wound up and unwound, the drive device 503 is activated, which in turn drives the take-up roller 501 and the unwound roller 502 to rotate synchronously. At this time, the take-up roller 501 winds up the filter belt 9, that is, the part of the filter belt 9 to be filtered is wound around the outside of the take-up roller 501; while the unwound roller 502 unwinds the filter belt 9, that is, the filter belt 9 that was originally wound around the unwound roller 502 and was not filtered is released and cooperates with the air outlet 7 to form a new filtration area.

[0029] Specifically, such as Figure 4 As shown, the drive device 503 includes a motor 5031 and a transmission assembly 5032. The motor 5031 is mounted on the top of the housing 2, and its output end (shaft) is connected to the input end of the transmission assembly 5032. The output end of the transmission assembly 5032 is the output end of the drive device 503. It can be understood that the motor 5031 drives the two rollers to rotate synchronously through the transmission assembly 5032.

[0030] This application does not specifically limit the structure of the transmission assembly 5032, but the following specific embodiment is provided for reference:

[0031] like Figure 4As shown, the transmission assembly 5032 includes a worm 50321 and a pair of worm wheels 50322. The two worm wheels 50322 are respectively installed at the top positions of the take-up roller 501 and the unwind roller 502, while the worm 50321 is horizontally rotatably installed at the top of the housing 2 and connected to the output end of the motor 5031. The worm 50321 meshes with the worm wheels 50322.

[0032] Understandably, the motor 5031 drives the worm gear 50321 to rotate, and the worm gear 50321 acts on the two worm wheels 50322, thus achieving synchronous rotation of the take-up roller 501 and the unwind roller 502. It should be noted that the worm gear 50321 and the worm wheels 50322 have self-locking properties; therefore, when the motor 5031 stops rotating, the take-up roller 501 and the unwind roller 502 can still stably remain stationary, and of course, the filter belt 9 is also taut at this time.

[0033] It should be noted that since the filter belt 9 can be wound up, it is a flexible structure, such as a multi-layered mesh belt structure filled with fibers. When the airflow passes through the filter belt 9, it will exert a force on it. If the force is too large, it may cause the filter belt 9 to deform or even be damaged, thereby affecting the filtration effect.

[0034] Therefore, in order to solve the above-mentioned technical problems, in one embodiment of this application, such as Figure 4 As shown, a perforated plate 10 is installed on one side of the inner wall of the housing 2 corresponding to the air outlet 7, and the filter belt 9 can pass through the perforated plate 10. The specific shape and structure of the perforated plate 10 are as follows. Figure 5 As shown. It can be understood that during filtration, the perforated plate 10 can limit and support the filter belt 9, so that the filter belt 9 will not be deformed or even damaged under the action of airflow force, thus ensuring the stability of filtration.

[0035] Furthermore, such as Figure 2 and Figure 3 As shown, a duct 8 is installed on the outer periphery of the side of the perforated plate 10 and at the air inlet 4. The duct 8 and the filter area form a flow channel. It can be understood that the airflow enters through the duct 8 and then enters the pipe 3 through the filter area. The purpose of this design is to prevent the incoming airflow from passing through the entire inner cavity of the housing 2. We know that a take-up roller 501 and an unwind roller 502 are also installed inside the housing 2. The take-up roller 501 is wound with an unfiltered filter belt 9. Thus, the unfiltered airflow entering the housing 2 will contaminate the filter belt 9 on the take-up roller 501, and will also increase the cleaning intensity inside the housing 2. By setting up the duct 8, the airflow in the flow channel can be isolated from the take-up roller 501 and the unwind roller 502, thereby ensuring the cleanliness of the rollers and also ensuring the cleanliness of the entire interior of the housing 2.

[0036] Furthermore, we know that oil mist in the airflow can be absorbed by the filter belt 9, while larger solid impurities will be blocked. To facilitate the collection of solid impurities, a collection box 6 is installed at the bottom of the air duct 8 near the filter belt 9, and the collection box 6 penetrates the bottom of the housing 2. Of course, a discharge port is provided at the bottom of the collection box 6. It can be understood that larger impurities filtered by the filter belt 9 will fall into the collection box 6 for collection under the action of gravity. When the impurities in the collection box 6 accumulate to a certain level, they can be cleaned by opening the discharge port, which is simple and convenient.

[0037] Furthermore, in order to improve the sealing of the flow channel, such as Figure 3 As shown, we know that the airflow in the flow channel most easily overflows from the point where the filter belt 9 passes through the perforated plate 10; therefore, as Figure 5 As shown, (rubber) sealing rings 11 can be provided on both sides of the perforated plate 10. The sealing rings 11 and the filter belt 9 passing through them abut against each other, thereby greatly improving the sealing between the flow channel and the inside of the housing 2. At the same time, the sealing rings 11 also have the following effect: at this time, the sealing rings 11 are equivalent to elastically clamping the filter belt 9. Therefore, when the filter belt 9 is wound up or down, the oil absorbed in the filter belt 9 will be squeezed out by the pressure of the sealing rings 11, and then flow into the collection box 6 for collection under the action of gravity. This also avoids the situation where the filter belt 9 drips into the housing 2 after being wound around the winding roller 501, and further improves the cleanliness of the filter belt 9 after winding.

[0038] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A filter for an oil mist recovery system, characterized in that, include: Vacuum equipment; The housing has an outlet on one side connected to the input end of the vacuum device via a pipe, and an inlet on the other side of the housing. as well as A retraction mechanism is installed inside the housing and has a filter belt wound around its outside. The filter belt cooperates with the air outlet to form a filtration zone. When the filtration zone is saturated, the retraction mechanism is adapted to drive the filter belt to retract and move, so that the filter belt cooperates with the air outlet to form a new filtration zone. The take-up and unwinding mechanism includes a take-up roller, an unwind roller, and a drive device. The take-up roller and the unwind roller are both vertically rotatably mounted inside the housing and located on both sides of the air outlet. The two ends of the filter belt are respectively connected to the take-up roller and the unwind roller. The drive device is mounted in the housing and its output end is connected to the take-up roller and the unwind roller. The drive device is adapted to drive the take-up roller and the unwind roller to rotate synchronously, thereby realizing the take-up and unwinding movement of the filter belt. The driving device includes a motor and a transmission assembly. The motor is mounted on the top of the housing and its output end is connected to the input end of the transmission assembly. The output end of the transmission assembly is the output end of the driving device. The transmission assembly includes a worm and a pair of worm wheels. The worm wheels are respectively installed on the top of the take-up roller and the unwind roller. The worm is horizontally rotatably installed on the top of the housing and connected to the output end of the motor. The worm meshes with the worm wheels.

2. The filter for an oil mist recovery system as described in claim 1, characterized in that: A perforated plate is installed on one side of the inner wall of the housing corresponding to the air outlet, and the filter belt is adapted to pass through the perforated plate; during filtration, the perforated plate is adapted to limit and support the filter belt.

3. The filter for an oil mist recovery system as described in claim 2, characterized in that: A duct is installed on the outer periphery of the side of the perforated plate and at the air inlet. The duct and the filter area cooperate to form a flow channel, thereby isolating the airflow in the flow channel from the take-up roller and the unwind roller.

4. The filter for an oil mist recovery system as described in claim 3, characterized in that: The bottom end of the air duct is connected to a collection box that runs through the bottom end of the housing near the filter belt. The collection box is suitable for collecting the filtered impurities.

5. The filter for an oil mist recovery system as described in claim 4, characterized in that: Both sides of the perforated plate are provided with sealing rings, which abut against the filter belt that passes through it.

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