Oil bath type filtering device

Abstract

An oil bath type filtering device comprises a gas mixing unit and a cyclone filtering unit. The gas mixing unit comprises a mixing barrel, liquid grease and a plurality of cutting media, the cyclone filtering unit comprises a barrel wall and at least one cyclone group, the cyclone group is provided with a cyclone part and a drainage pipe, and the drainage pipe is connected in the tangential direction of the cyclone part. When gas flows through the gas mixing unit, is adhered with water vapor through the liquid grease and is subjected to bubble micronization by utilizing the cutting medium, the gas is guided into the cyclone filtering unit and is guided into the cyclone part through the drainage pipe to generate vortex cyclone, heavier substances fall down, and lighter air is discharged. And the purpose of filtering moisture and impurities in the air can be achieved by utilizing the overall configuration.

Description

Technical Field

[0001] The invention relates to a filtering device, in particular to an oil bath type filtering device installed between a hot press and a vacuum pump. Background Art

[0002] There is a flexible printed circuit board pressing machine (patent case No. M512280, Taiwan, China), which includes a feeder, a transmission unit, a pressing machine and a receiving machine. The feeder and the receiving machine are designed and matched with a plurality of sheet-type flexible printed circuit boards, so that during the pressing process of the pressing machine, the flexible printed circuit boards are pressed by an upper die seat and a lower die seat of the pressing machine, so that each flexible printed circuit board can maintain a vacuum during the pressing process, thereby improving the process yield of each flexible printed circuit board.

[0003] The above-mentioned laminating machine can achieve the expected operation purpose, and the flexible printed circuit board is evacuated by a vacuum pump during the laminating process to maintain a vacuum state.

[0004] In order to prevent moisture and impurities from entering the vacuum pump along with the gas, which may affect the service life of the vacuum pump, it is necessary to set a filtering device between the laminating machine and the vacuum pump. Summary of the invention

[0005] The object of the present invention is to provide an oil bath type filtering device which can prolong the service life of a vacuum pump.

[0006] The oil bath filter device of the present invention comprises a gas mixing unit and a cyclone filter unit, wherein the gas mixing unit comprises a mixing barrel defining a mixing chamber, liquid grease contained in the mixing chamber, and a plurality of cut-off media contained in the mixing chamber and mixed in the liquid grease, wherein the mixing barrel has an inlet connected to the mixing chamber and capable of introducing gas, and an outlet for leading out gas, wherein the cyclone filter unit is connected to the gas mixing unit and comprises at least one cyclone component and at least one drainage pipe connected to the cyclone component and the outlet, wherein the cyclone component has an inlet and a connection hole capable of leading to the outside of the cyclone component, wherein the drainage pipe is connected to the inlet along the tangential direction of the cyclone component; wherein, when the gas flows through the gas mixing unit and is attached to water vapor by the liquid grease, and after the gas is micronized by the cut-off media, the gas is then introduced into the cyclone filter unit, and then introduced into the interior of the cyclone component through the drainage pipe to generate a vortex cyclone, wherein heavier substances fall downward, and lighter air is then discharged from the connection hole.

[0007] The oil bath filter device described in the present invention, the cyclone filter unit includes a barrel wall surrounding the axis and defining a cabin, the cyclone component is installed in the cabin, the cabin is connected to the outlet, the drainage pipe is connected to the cabin and indirectly connected to the outlet.

[0008] In the oil bath filter device of the present invention, the cyclone element of the cyclone filter unit further has a discharge pipe that can be connected to the outside of the cyclone filter unit, and the discharge pipe is opposite to the inlet.

[0009] The oil bath filter device described in the present invention further includes an oil mist filter unit connected to the cyclone filter unit, the oil mist filter unit includes a cover wall defining an inner hole, at least one filter group installed in the inner hole, and a guide pipe connected from the inner hole to the outside, and the filter group has filter cotton that can define an inlet hole.

[0010] The oil bath filter device described in the present invention, the oil mist filter unit also includes a lower fixed plate connected between the cover wall and the cyclone filter unit, and an upper fixed plate opposite to the lower fixed plate and connected to the cover wall, the guide pipe is arranged on the upper fixed plate, the cyclone filter unit also includes a connecting pipe connected to the filter cotton, the connecting pipe defines the connecting hole, and the connecting pipe has a bottom end portion between the drainage pipe and the bottom end of the cyclone component.

[0011] In the oil bath filtering device described in the present invention, the mixing barrel of the gas mixing unit also has a first barrel portion in the shape of an inverted cone, and a second barrel portion in the shape of a straight cylinder and connected to the first barrel portion, the first barrel portion gradually converges toward the inlet from one end connected to the second barrel portion, and the outlet is arranged in the second barrel portion.

[0012] In the oil bath filter device of the present invention, the barrel wall of the cyclone filter unit has at least one through hole connecting the chamber to the outside of the barrel wall, and the discharge pipe of the cyclone element is arranged through the through hole.

[0013] The oil bath filtering device described in the present invention, the cyclone filtering unit also includes a lower positioning plate connected between the barrel wall and the mixing barrel, and an upper positioning plate opposite to the lower positioning plate and connected to the barrel wall, the upper positioning plate having a fitting hole corresponding to the connecting hole.

[0014] In the oil bath filter device of the present invention, the cyclone element of the cyclone filter unit further comprises a circular tube section and a conical tube section connected to the circular tube section, and the conical tube section gradually converges when extending from one end connected to the circular tube section toward the other end.

[0015] In the oil bath filter device of the present invention, the cutting medium of the gas mixing unit is a porous material, and the porous material is selected from the group consisting of steel wool, steel mesh, sponge, filter cotton, non-woven fabric, woven fabric, granular objects or a combination thereof.

[0016] The beneficial effects of the present invention are: utilizing the liquid grease of the gas mixing unit to adhere to water vapor, utilizing the cutting medium to micronize bubbles, and then utilizing the cyclone filtering unit to generate vortex cyclones, so that heavier substances fall downward and lighter air flows upward, thereby achieving the purpose of filtering moisture and impurities in the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a planar assembly diagram of the first embodiment of the oil bath filter device of the present invention;

[0018] Figure 2 is a three-dimensional assembly diagram of the cyclone filter unit of the first embodiment;

[0019] Figure 3 is an exploded perspective view of the cyclone filter unit of the first embodiment;

[0020] Figure 4 is a top view of the cyclone filter unit of the first embodiment;

[0021] Figure 5 is along Figure 4 A sectional view taken along the straight line V-V in FIG.

[0022] Figure 6 It is a planar assembly diagram of the second embodiment of the oil bath filter device of the present invention. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0024] See also Figure 1 The first embodiment of the oil bath filter device of the present invention is installed between a laminating machine 1 and a vacuum pump 2. The oil bath filter device comprises a gas mixing unit 10, a cyclone filter unit 20 and an oil mist filter unit 30.

[0025] The gas mixing unit 10 includes a mixing barrel 11 defining a mixing chamber 14 , liquid grease 12 contained in the mixing chamber 14 , and a plurality of cutting media 13 contained in the mixing chamber 14 and mixed in the liquid grease 12 .

[0026] The mixing barrel 11 has a first barrel portion 111 in the shape of an inverted cone, and a second barrel portion 112 in the shape of a straight cylinder connected to the first barrel portion 111 along an axis L. The first barrel portion 111 has an inlet 113 connected to the mixing chamber 14 and connected to an air extraction port (not shown) of the press machine 1. The second barrel portion 112 has an outlet 114 opposite to the inlet 113 along the axis L, and an upper flange 115 corresponding to the outlet 114. The first barrel portion 111 gradually converges toward the inlet 113 from one end connected to the second barrel portion 112. The liquid grease 12 is lubricating oil. The cutting medium 13 is made of a porous material, and the porous material is selected from the group consisting of steel wool, steel mesh, sponge, filter cotton, non-woven fabric, woven fabric, granular objects or a combination thereof, wherein the steel wool is made of thin and flexible sharp steel wire.

[0027] Related References Figures 2 to 5 The cyclone filter unit 20 is connected to the gas mixing unit 10 and includes a barrel wall 21 surrounding the axis L and defining a chamber 25, a lower positioning plate 22 connected between the barrel wall 21 and the second barrel portion 112 of the mixing barrel 11, an upper positioning plate 23 opposite to the lower positioning plate 22 along the axis L and connected to the barrel wall 21, and three cyclone groups 24 installed in the chamber 25. The chamber 25 is connected to the outlet 114. The barrel wall 21 has three through holes 211 connected from the chamber 25 to the outside. The upper positioning plate 23 has three sleeve holes 231. The lower positioning plate 22 is fixed to the upper flange 115 in an airtight manner.

[0028] Each cyclone group 24 has a cyclone component 241, a drainage pipe 242 connected to the cyclone component 241 and the chamber 25, a discharge pipe 243 connected to the cyclone component 241 and capable of being connected to the outside of the barrel wall 21, and a connecting pipe 246 connected to the cyclone component 241 and capable of being connected to the outside of the cyclone component 241. The cyclone component 241 has a circular tube section 244 approaching the upper positioning plate 23, and a conical tube section 245 connected to the circular tube section 244. The conical tube section 245 gradually converges when extending from one end connected to the circular tube section 244 to the other end. The circular tube section 244 is in a hollow tube shape and has an inlet 247 opened in the tube wall. The drainage pipe 242 is connected to the inlet 247 along the tangent direction of the circular tube section 244. The discharge pipe 243 is opposite to the inlet 247. One end of the discharge pipe 243 is connected to the bottom of the conical tube section 245, and the other end is passed through the through hole 211 and can extend to the outside of the barrel wall 21. The connecting pipe 246 defines a connection hole 248 that can be connected to the oil mist filter unit 30. The connecting pipe 246 has a bottom end 246' that extends into the corresponding cyclone member 241 and is between the drainage pipe 242 and the bottom of the conical tube section 245.

[0029] The oil mist filter unit 30 is opposite to the gas mixing unit 10 along the axis L and is connected to the cyclone filter unit 20. The oil mist filter unit 30 includes a cover wall 31 surrounding the axis L and defining an inner hole 35, three filter groups 32 installed in the inner hole 35, a lower fixed plate 33 connected between the cover wall 31 and the cyclone filter unit 20, and an upper fixed plate 34 opposite to the lower fixed plate 33 along the axis L and connected to the cover wall 31. Each filter group 32 has a filter cotton 322 that can define an inlet hole 321. The connecting hole 248 of the connecting pipe 246 is connected to the inlet hole 321. The upper fixed plate 34 has a guide pipe 341 connected to the vacuum pump 2.

[0030] In order to further understand the effects of the various components of the present invention, the technical means used, and the expected effects to be achieved, the following description will be given. It is believed that this will provide a deeper and more specific understanding of the present invention.

[0031] For example Figure 1 As shown, when the gas extracted from the laminating machine 1 flows into the mixing chamber 14 of the mixing barrel 11 through the inlet 113, and in the process of the gas flowing toward the outlet 114, the gas adheres to the moisture in the air through the liquid grease 12, and the bubbles are micronized by the cutting medium 13, so that the contact area between the bubbles and the liquid grease 12 is increased, and the gas emitted from the liquid grease 12 is introduced into the chamber 25 of the cyclone filter unit 20 again, and is introduced along the tangent direction of the circular tube section 244 of the cyclone member 241 through the drainage pipe 242, and the introduced airflow generates a vortex cyclone inside the cyclone member 241 (with reference to FIG. Figure 5 ), heavier substances (such as water) fall downward and are discharged to the outside of the barrel wall 21 through the discharge pipe 243. Lighter air is then guided to the inlet hole 321 of the filter group 32 through the connection hole 248 of the connecting pipe 246. When the gas passes through the outer surface of the filter cotton 322, the fine oil droplets are filtered through the filter cotton 322. Finally, the clean air is guided to the vacuum pump 2 through the guide pipe 341 of the upper fixed plate 34.

[0032] Therefore, through the coordination of the overall structure of the present invention, the liquid grease 12 of the gas mixing unit 10 is used to adhere to water vapor, the cutting medium 13 is used to micronize the bubbles, and then the cyclone filter unit 20 is used to generate a vortex cyclone, so that the heavier substances fall downward and the lighter air flows upward, and finally the oil mist is filtered out by the oil mist filter unit 30, which can prevent the moisture and impurities in the air extracted from the laminating machine 1 from entering the interior of the vacuum pump 2, and achieve the purpose of extending the service life of the vacuum pump 2.

[0033] For example Figure 6 As shown, the second embodiment of the present invention can also be installed between a laminating machine 1 and a vacuum pump 2. The difference from the first embodiment is that the cyclone group 24 of the cyclone filter unit 20 can be connected from the outside of the gas mixing unit 10'. In other words, the drainage pipe 242 of the cyclone group 24 is directly connected to the outlet 114' of the gas mixing unit 10'. In addition, the bottom of the cyclone member 241 can be connected to a collection container 26, and the collection container 26 can collect water vapor and other impurities.

[0034] In summary, the oil bath filter device of the present invention has a simple overall structure and is easy to manufacture and assemble, and can achieve a better filtering effect, thereby truly achieving the purpose of the present invention.

Claims

1. An oil bath filter device, comprising a gas mixing unit and a cyclone filter unit, characterized in that: The gas mixing unit comprises a mixing barrel defining a mixing chamber, liquid grease contained in the mixing chamber, and a plurality of cutting media contained in the mixing chamber and mixed in the liquid grease, wherein the mixing barrel has an inlet connected to the mixing chamber and capable of introducing gas, and an outlet for leading out gas; The cyclone filter unit is connected to the gas mixing unit and includes at least one cyclone component and at least one drainage pipe connected to the cyclone component and the outlet. The cyclone component has an inlet and a connection hole that can be connected to the outside of the cyclone component. The drainage pipe is connected to the inlet along the tangent direction of the cyclone component; wherein, When the gas flows through the gas mixing unit and is attached to water vapor by the liquid grease, and the bubbles are micronized by the cutting medium, the gas is then introduced into the cyclone filter unit, and then introduced into the cyclone element through the drainage pipe to generate a vortex cyclone, and the heavier substances fall downward, and the lighter air is discharged from the connecting hole.

2. The oil bath filter device according to claim 1, characterized in that: The cyclone filter unit includes a barrel wall surrounding an axis and defining a chamber, the cyclone element is installed in the chamber, the chamber is connected to the outlet, and the drainage pipe is connected to the chamber and indirectly connected to the outlet.

3. The oil bath filter device according to claim 2, characterized in that: The cyclone element of the cyclone filter unit further has a discharge pipe which can be communicated to the outside of the cyclone filter unit, and the discharge pipe is opposite to the introduction port.

4. The oil bath filter device according to claim 1 or 3, characterized in that: The oil bath filter device also includes an oil mist filter unit connected to the cyclone filter unit, the oil mist filter unit includes a cover wall defining an inner hole, at least one filter group installed in the inner hole, and a guide pipe connected from the inner hole to the outside, and the filter group has filter cotton that can define an inlet hole.

5. The oil bath filter device according to claim 4, characterized in that: The oil mist filter unit also includes a lower fixed plate connected between the cover wall and the cyclone filter unit, and an upper fixed plate opposite to the lower fixed plate and connected to the cover wall, the guide pipe is arranged on the upper fixed plate, and the cyclone filter unit also includes a connecting pipe connected to the filter cotton, the connecting pipe defines the connecting hole, and the connecting pipe has a bottom end portion between the drainage pipe and the bottom end of the cyclone component.

6. The oil bath filter device according to claim 1, characterized in that: The mixing barrel of the gas mixing unit also has a first barrel portion in the shape of an inverted cone, and a second barrel portion in the shape of a straight cylinder and connected to the first barrel portion. The first barrel portion gradually converges toward the inlet from one end connected to the second barrel portion, and the outlet is arranged in the second barrel portion.

7. The oil bath filter device according to claim 3, characterized in that: The barrel wall of the cyclone filter unit has at least one through hole communicating from the chamber to the outside of the barrel wall, and the discharge pipe of the cyclone element is arranged through the through hole.

8. The oil bath filter device according to claim 7, characterized in that: The cyclone filter unit further comprises a lower positioning plate connected between the barrel wall and the mixing barrel, and an upper positioning plate opposite to the lower positioning plate and connected to the barrel wall, wherein the upper positioning plate has a fitting hole corresponding to the connecting hole.

9. The oil bath filter device according to claim 7, characterized in that: The cyclone element of the cyclone filter unit also has a circular tube section and a conical tube section connected to the circular tube section, and the conical tube section gradually converges when extending from one end connected to the circular tube section toward the other end.

10. The oil bath filter device according to claim 1, characterized in that: The cutting medium of the gas mixing unit is a porous material, and the porous material is selected from the group consisting of steel wool, steel mesh, sponge, filter cotton, non-woven fabric, woven fabric, granular objects or a combination thereof.

Images