A rotary vane vacuum pump filtering device

Abstract

The utility model discloses a kind of rotary vane vacuum pumps filtering device, including vacuum pump body, the air inlet pipe is equipped in vacuum pump body upper side, the air outlet pipe is equipped in air inlet pipe side, cover is equipped in air inlet pipe upper side, air inlet is equipped in cover middle part, support ring is equipped in air inlet pipe inner upper end, fixed ring is equipped in support ring upper side, multiple matrix arrangement's connecting rod is equipped in fixed ring lower side, connecting rod lower side is fixedly connected with fixed plate, the filter paper is equipped in fixed plate in connecting rod inner wall, filter screen is equipped in filter paper inboard. This kind of filtering device structure is simple, filtering effect is good, can effectively avoid the impurity in airflow into vacuum pump interior, guarantees the use safety of vacuum pump.

Description

Technical Field

[0001] This utility model relates to the field of rotary vane vacuum pump technology, and in particular to a rotary vane vacuum pump filtration device. Background Technology

[0002] A rotary vane vacuum pump is a type of rotary variable-volume vacuum pump where the rotor, eccentrically mounted, is tangent to the fixed surface of the stator. Two (or more) vanes slide within the rotor slots and contact the inner wall of the stator, dividing the pump chamber into several variable volumes. Typically, oil is used to seal the gap between the vanes and the pump chamber, making rotary vane vacuum pumps generally oil-sealed mechanical vacuum pumps. Existing rotary vane vacuum pumps evacuate air through the inlet pipe during operation. During this process, particulate matter and flocculent particles are drawn in. When these flocculent particles come into contact with the oil, they aggregate and entangle, forming larger objects that can easily damage the internal components of the rotary vane vacuum pump, reducing its service life. Therefore, we propose a filtration device for rotary vane vacuum pumps. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a rotary vane vacuum pump filtration device. This invention solves the problem that existing rotary vane vacuum pumps, during operation, draw in airborne particles and flocculent matter through the intake pipe. When these flocculent matter comes into contact with oil, it aggregates and tangles, forming larger objects that can easily damage the internal components of the rotary vane vacuum pump, thus reducing its service life.

[0004] This utility model discloses a rotary vane vacuum pump filtration device, comprising a vacuum pump body, an air inlet pipe on one side of the upper part of the vacuum pump body, an air outlet pipe on one side of the air inlet pipe, a cover on the upper part of the air inlet pipe, an air inlet in the middle of the cover, a support ring on the upper end of the air inlet pipe, a fixing ring on the upper part of the support ring, a plurality of connecting rods arranged in a matrix below the fixing ring, the lower part of the connecting rods being fixedly connected to a fixing plate, filter paper on the inner wall of the fixing plate located on the connecting rods, and a filter screen on the inner side of the filter paper.

[0005] In the above scheme, four positioning blocks are arranged in a matrix above the support ring, and positioning holes matching the positioning blocks are opened on the fixing ring.

[0006] In the above scheme, the positioning block is fixedly connected to the limiting block above, and the limiting block and the positioning block are provided with shear grooves in the middle, and the limiting block has a conical cross-section.

[0007] In the above scheme, the upper end of the air intake pipe is provided with an external thread, and the cover is provided with an internal thread that matches the external thread.

[0008] In the above scheme, the cross-section of the filter paper is a closed wavy ring.

[0009] In the above scheme, the outer side of the cover is provided with anti-slip texture.

[0010] The advantages and beneficial effects of this utility model are as follows: This utility model provides a rotary vane vacuum pump filter device. Through the mutual cooperation between the positioning block and the positioning hole, the fixing ring can be initially fixed on the support ring. The limiting block can limit the fixing ring. The shear groove allows the two sides of the limiting block to approach each other. At this time, the fixing ring can be disassembled, and the airflow can enter the vacuum pump body through the air inlet pipe. After the airflow enters the vacuum pump body, the filter screen can perform preliminary filtration of the airflow entering the vacuum pump body, and the filter paper can further filter the airflow entering the vacuum pump body. Under the same floor space, the corrugated ring structure of the filter paper greatly increases the surface area of ​​the filter paper, which can accelerate the filtration speed and improve the filtration efficiency. This filter device has a simple structure, good filtration effect, and can effectively prevent impurities in the airflow from entering the vacuum pump, ensuring the safety of the vacuum pump. Attached Figure Description

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of part A of the present invention; Figure 4 This is a top view of the filter paper of this utility model.

[0013] In the diagram: 1. Vacuum pump body; 2. Inlet pipe; 3. Outlet pipe; 4. Cover; 5. Inlet; 6. Support ring; 7. Fixing ring; 8. Connecting rod; 9. Fixing plate; 10. Filter paper; 11. Filter screen; 12. Positioning block; 13. Positioning hole; 14. Limiting block; 15. Shear groove; 16. External thread; 17. Internal thread; 18. Anti-slip texture. Detailed Implementation

[0014] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0015] like Figure 1-4 As shown, this utility model is a rotary vane vacuum pump filtration device, including a vacuum pump body 1. An air inlet pipe 2 is provided on one side of the upper part of the vacuum pump body 1, through which airflow enters the interior of the vacuum pump body 1. An air outlet pipe 3 is provided on one side of the air inlet pipe 2. A cover 4 is provided above the air inlet pipe 2, and an air inlet 5 is opened in the middle of the cover 4. A support ring 6 is provided at the upper end of the air inlet pipe 2. A fixing ring 7 is provided above the support ring 6. The support ring 6 can support the fixing ring 7. A plurality of connecting rods 8 are arranged in a matrix below the fixing ring 7. The connecting rods 8 are fixedly connected to a fixing plate 9 below. Filter paper 10 is provided on the inner wall of the fixing plate 9 located on the connecting rods 8. A filter screen 11 is provided on the inner side of the filter paper 10. The filter screen 11 can perform preliminary filtration of the airflow entering the interior of the vacuum pump body 1. The filter paper 10 can further filter the airflow entering the interior of the vacuum pump body 1.

[0016] The support ring 6 has four positioning blocks 12 arranged in a matrix above it. The fixing ring 7 has positioning holes 13 that match the positioning blocks 12. The positioning blocks 12 can be inserted into the positioning holes 13. Through the cooperation between the positioning blocks 12 and the positioning holes 13, the fixing ring 7 can be initially fixed on the support ring 6.

[0017] The positioning block 12 is fixedly connected to the limiting block 14 at the top. The limiting block 14 and the positioning block 12 are provided with shear grooves 15 in the middle. The limiting block 14 has a tapered cross section. When the positioning block 12 is inserted into the positioning hole 13, the limiting block 14 can limit the fixing ring 7. The setting of the shear groove 15 allows the two sides of the limiting block 14 to approach each other. At this time, the fixing ring 7 can be disassembled. The tapered limiting block 14 makes it easier for the positioning block 12 to be inserted into the positioning hole 13.

[0018] The upper end of the air intake pipe 2 is provided with an external thread 16, and the cover 4 is provided with an internal thread 17 that matches the external thread 16. The mutual cooperation between the external thread 16 on the air intake pipe 2 and the internal thread 17 on the inner wall of the cover 4 allows the cover 4 to be stably fixed on the air intake pipe 2.

[0019] The filter paper 10 has a closed wavy ring cross-section. Under the same floor area, the wavy ring structure of the filter paper 10 greatly increases the surface area of ​​the filter paper 10, which can speed up the filtration speed and improve the filtration efficiency.

[0020] The outer side of the cover 4 is provided with anti-slip texture 18, which effectively increases the friction between the palm and the cover 4, making it easier for the staff to rotate the cover 4.

[0021] Specifically, in this utility model, the positioning block 12 can be inserted into the positioning hole 13. Through the mutual cooperation between the positioning block 12 and the positioning hole 13, the fixing ring 7 can be initially fixed on the support ring 6. The limiting block 14 can limit the fixing ring 7. The setting of the shear groove 15 allows the two sides of the limiting block 14 to approach each other. At this time, the fixing ring 7 can be disassembled. The conical limiting block 14 makes it easier for the positioning block 12 to be inserted into the positioning hole 13. The airflow can enter the vacuum pump body 1 through the air inlet pipe 2. After the airflow enters the vacuum pump body 1, the filter screen 11 can perform preliminary filtration of the airflow entering the vacuum pump body 1. The filter paper 10 can filter the airflow entering the vacuum pump body 1 again. Under the same floor area, the wavy ring structure of the filter paper 10 greatly increases the surface area of ​​the filter paper 10, which can speed up the filtration speed and improve the filtration efficiency.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary vane vacuum pump filtration device, comprising a vacuum pump body (1), characterized in that, The vacuum pump body (1) is provided with an air inlet pipe (2) on one side above the air inlet pipe (2) and an air outlet pipe (3) on one side of the air inlet pipe (2). The air inlet pipe (2) is provided with a cover (4) above it. The cover (4) has an air inlet (5) in the middle. The upper end of the air inlet pipe (2) is provided with a support ring (6). The support ring (6) is provided with a fixing ring (7) above it. The fixing ring (7) is provided with multiple connecting rods (8) arranged in a matrix below it. The connecting rods (8) are fixedly connected to a fixing plate (9) below them. The fixing plate (9) is provided with filter paper (10) on the inner wall of the connecting rods (8). The filter paper (10) is provided with a filter screen (11) on the inner side of the filter screen (10).

2. The rotary vane vacuum pump filtration device according to claim 1, characterized in that, The support ring (6) has four positioning blocks (12) arranged in a matrix above it, and the fixing ring (7) has positioning holes (13) that match the positioning blocks (12).

3. A rotary vane vacuum pump filtration device according to claim 2, characterized in that, The positioning block (12) is fixedly connected to the limiting block (14) above. The limiting block (14) and the positioning block (12) are provided with shear grooves (15) in the middle. The limiting block (14) has a tapered cross section.

4. The rotary vane vacuum pump filtration device according to claim 1, characterized in that, The upper end of the air intake pipe (2) is provided with an external thread (16), and the cover (4) is provided with an internal thread (17) that matches the external thread (16).

5. A rotary vane vacuum pump filtration device according to claim 1, characterized in that, The filter paper (10) has a closed wavy ring cross section.

6. A rotary vane vacuum pump filtration device according to claim 1, characterized in that, The outer side of the cover (4) is provided with anti-slip texture (18).

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