Oil bath type filter of vacuum pump unit

Abstract

The utility model discloses an oil bath type filter of a vacuum pump unit, which comprises a filter body, an air inlet is arranged on one side of the filter body, an air outlet is arranged on the other side of the filter body, an oil tank is arranged at the bottom of the filter body, and the inside of the oil tank is communicated with the inside of the filter body. The filter body is provided with a bent air channel passing through an oil tank, a traditional non-woven fabric filter element structure is abandoned, a plurality of partition plates are adopted in the filter body to form the bent air channel, the air channel passes through the oil surface of the oil tank at the bottom, and air enters from an air inlet, shuttles back and forth in the air channel and can touch the oil surface below during the period. Impurities, greasy dirt and particles can be stuck by oil liquid at the lower part, so that good filtering is effectively realized, a better filtering effect is achieved, and the effect of filtering dust and greasy dirt under the condition that an air passage is not influenced is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vacuum pump especially relates to a vacuum pump unit's oil bath type filter. BACKGROUND

[0002] The vacuum pump unit is a set of equipment system for obtaining vacuum environment formed by reasonably combining multiple vacuum pumps and being equipped with corresponding pipeline, valve, electrical control and other systems.

[0003] Generally, the Roots sliding valve unit does not need to install the air inlet filter in the use process, when the dust and impurities of the user's use condition are particularly much, it is necessary to install an air inlet filter, otherwise the impurities and particles will directly enter the Roots pump and the front stage pump, thereby causing the gap between the Roots pump and the front stage pump to become small and the load to increase, and the Roots pump and the front stage pump are seriously burnt or stuck.

[0004] The conventional air inlet filter adopts the non-woven fabric filter core structure at present, which is only effective for dry dust, when encountering impurities such as liquid oil, the outer surface of the filter core of the filter is stuck, the air inlet channel is reduced, thereby reducing the pumping rate of the pump, which easily affects the use of the unit and needs to be further improved. UTILITY MODEL CONTENTS

[0005] In order to further improve the filtering effect and reduce the blocking phenomenon, the application provides an oil bath type filter of a vacuum pump unit.

[0006] The application provides an oil bath type filter of a vacuum pump unit, which adopts the following technical scheme:

[0007] An oil bath type filter of a vacuum pump unit, comprising a filter body, one side of the filter body is provided with an air inlet, the other side is provided with an air outlet, the bottom of the filter body is provided with an oil tank, the inside of the oil tank is communicated with the inside of the filter body, and the filter body is provided with a gas channel which is bent and passes through the oil tank.

[0008] Optionally, the inside of the filter body is provided with a partition plate, the partition plates are distributed along the air inlet direction, and the gas channel is formed between adjacent partition plates.

[0009] Optionally, the partition plate comprises an upper plate and a middle plate, the top of the upper plate is fixed to the inner top wall of the filter body, and the top of the middle plate is spaced apart from the inner top wall of the filter body.

[0010] Optionally, the upper plate and the middle plate are alternately distributed along the air inlet direction, the bottom of the middle plate extends into the oil tank, and the bottom of the middle plate is spaced apart from the bottom wall of the oil tank.

[0011] Optionally, the top of the filter body is provided with an oil filling port, and a cover matched with the oil filling port is arranged at the oil filling port.

[0012] Optionally, the oil filling port is located directly above the middle plate.

[0013] Optionally, the sidewall of the oil tank is provided with an oil mirror.

[0014] Optionally, the oil tank and the filter body are connected and fixed through flanges.

[0015] Optionally, the bottom side of the oil tank is provided with a drain port, and a plug matched with the drain port is arranged at the drain port.

[0016] Optionally, the baffle includes an upper plate and a middle plate, the top of the upper plate is hinged to the top wall inside the filter body, and the middle plate is fixed to the inner wall of the filter body.

[0017] In summary, the present application has at least one of the following beneficial technical effects:

[0018] 1. The structure of the traditional non-woven fabric filter element is abandoned, a plurality of baffles are arranged inside the filter body to form a bent air channel, and the air channel passes through the oil surface of the bottom oil tank. The gas enters from the air inlet and shuttles in the air channel. During the process, the impurities, oil stains and particles will be stuck by the oil below, effectively realizing good filtration and achieving better filtration effect without affecting the air channel.

[0019] 2. The baffles are arranged in an alternating manner of upper plate and lower plate, the formed air channel has more turning points, so that the overall path of the air channel is longer, and the impurities in the gas can be more adhered in the air channel, thereby improving the filtration effect; 3. The oil mirror is arranged to facilitate direct observation of the oil condition in the internal oil tank from the outside, so as to timely add oil. The oil can be added through the oil filling port above, and the oil in the oil tank can be discharged through the drain port for replacement, which is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a sectional view of example 1.

[0021] Figure 2 is a side view of example 1.

[0022] Figure 3 is a sectional view of example 2.

[0023] BRIEF DESCRIPTION OF DRAWINGS:

[0024] 1. Filter body; 2. Air inlet; 3. Air outlet; 4. Oil tank; 5. Partition; 6. Air passage; 7. Top plate; 8. Middle plate; 9. Oil filler neck; 10. Cover; 11. Oil sight glass; 12. Oil drain; 13. Plug; 14. Flange. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.

[0026] An oil bath filter for a vacuum pump unit, such as Figure 1 As shown, the filter includes a filter body 1, with an air inlet 2 on one side and an air outlet 3 on the other side. An oil tank 4 is located at the bottom of the filter body 1, storing oil. The bottom of the filter body 1 is penetrated and communicates with the oil tank 4. In addition, multiple baffles 5 are distributed at intervals along the air intake direction inside the filter body 1. The adjacent baffles 5 form a bend inside the filter body 1 and pass through the air passage 6 of the oil tank 4. This allows the gas to enter from the air inlet 2 and flow through the labyrinthine air passage 6. During the flow, the gas comes into contact with the oil in the oil tank 4. Impurities, oil stains, and particles are stuck to the oil at the bottom, effectively achieving good filtration and a better filtration effect. This achieves the effect of filtering dust and oil stains without affecting the air passage 6.

[0027] like Figure 1 and Figure 2 As shown, the baffle 5 includes an upper plate 7 and a middle plate 8. The top of the upper plate 7 is fixed to the inner top wall of the filter body 1, and the middle plate 8 is fixed to the side wall of the filter body 1. There is a gap between the top of the middle plate 8 and the top of the inner wall of the filter body 1, and there is a gap between the bottom of the middle plate 8 and the bottom wall of the oil tank 4. The upper plate 7 and the middle plate 8 are alternately distributed along the air intake direction, thereby forming a labyrinthine bend in the air passage 6, which makes the gas flow through the air passage 6 longer, that is, the gas flows through the filter body 1 for a longer time. This allows impurities in the gas to be filtered more thoroughly, thus improving the filtration effect.

[0028] like Figure 1 and Figure 2 As shown, a filler port 9 is provided on the top of the filter body 1, and a matching cover 10 is provided at the filler port 9. The cover 10 is threadedly connected to the filler port 9. In actual use, the oil can be added to the oil tank 4 by opening the cover 10. During the filling process, some oil can also carry away the impurities adhering to the surface of the baffle 5, thus cleaning the surface of the baffle 5. In this embodiment, the middle plate 8 is located directly below the filler port 9, which can play a certain role in diverting the oil flowing down from the filler port 9.

[0029] like Figure 1 and Figure 2As shown, an oil mirror 11 for observing the internal oil level is arranged on the side wall of the oil tank 4, so that the staff can know the oil condition in the oil tank 4 from the outside in time, and the oil can be added in time; an oil discharge port 12 is arranged on one side of the bottom of the oil tank 4, and a plug 13 is threadedly connected to the oil discharge port 12 to close the oil discharge port 12; when the internal oil needs to be discharged, the plug 13 is only needed to be opened, and the internal oil can be discharged through the oil discharge port 12, so that the overall replacement operation of the oil is facilitated.

[0030] As shown in Figure 1 and Figure 2 , the oil tank 4 is detachably connected with the filter body 1, and in the embodiment, the oil tank 4 and the filter body 1 are provided with opposite flanges 14, and the flanges 14 and bolts are used to realize the connection and fixation; when the internal part needs to be overhauled and cleaned, the oil tank 4 can be detached, and the oil tank 4 and the filter body 1 can be separately produced and manufactured, so that the production difficulty is reduced.

[0031] Embodiment 2

[0032] An oil bath type filter of a vacuum pump unit, as shown in Figure 3 , differs from the embodiment 1 mainly in the connection mode of the upper plate 7 and the filter body 1; in the embodiment, the top of the upper plate 7 is hingedly connected to the top wall in the filter body 1; in the actual use process, with the flow of the gas in the gas channel 6, the upper plate 7 can swing to continuously change the width of the gas channel 6, which can promote the flow of the gas in the gas channel 6, and the swinging upper plate 7 can promote the auxiliary effect of the downward flow of the gas into the oil, so that the impurities in the gas can be more fully adhered and filtered, and a better filtering effect is achieved.

[0033] The above are the preferred embodiments of the present application, and are not used to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An oil bath filter for a vacuum pump package, characterized by: The application relates to a filter body (1) provided with an air inlet (2) on one side and an air outlet (3) on the other side, and an oil tank (4) arranged at the bottom of the filter body (1) and in communication with the inside of the filter body (1), wherein the filter body (1) is provided with a gas channel (6) which is bent and passes through the oil tank (4).

2. An oil bath filter for a vacuum pump unit according to claim 1, characterized in that: The inside of the filter body (1) is provided with partitions (5) which are distributed along the air inlet direction and form the gas channel (6) between adjacent partitions (5).

3. An oil bath filter for a vacuum pump package according to claim 2, wherein: The partitions (5) comprise upper plates (7) and middle plates (8), the top of the upper plate (7) is fixed to the inner top wall of the filter body (1), and the top of the middle plate (8) is spaced apart from the inner top wall of the filter body (1).

4. An oil bath filter for a vacuum pump assembly as claimed in claim 3, wherein: The upper plates (7) and the middle plates (8) are alternately distributed along the air inlet direction, the bottom of the middle plate (8) extends into the oil tank (4), and the bottom of the middle plate (8) is spaced apart from the bottom wall of the oil tank (4).

5. An oil bath filter for a vacuum pump unit according to claim 3, characterized in that: The top of the filter body (1) is provided with an oil inlet (9), and a cover (10) matched with the oil inlet (9) is arranged at the oil inlet (9).

6. An oil bath filter for a vacuum pump package according to claim 5, characterized in that: The oil inlet (9) is located directly above the middle plate (8).

7. The oil bath filter of claim 1, wherein: An oil mirror (11) is arranged on the side wall of the oil tank (4).

8. The oil bath filter of claim 1, wherein: The oil tank (4) and the filter body (1) are connected and fixed through flanges (14).

9. The oil bath filter of claim 1, wherein: An oil outlet (12) is arranged on one side of the bottom of the oil tank (4), and a plug (13) matched with the oil outlet (12) is arranged at the oil outlet (12).

10. The oil bath filter of claim 2, wherein: The partitions (5) comprise upper plates (7) and middle plates (8), the top of the upper plate (7) is hinged to the inner top wall of the filter body (1), and the middle plate (8) is fixed to the inner wall of the filter body (1).

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