Vacuum pump gas inlet filtering device

Abstract

The utility model discloses a kind of vacuum pump air intake filter devices, including vacuum pump body, the top of the vacuum pump body Two sides are equipped with air outlet and air inlet respectively, the top of the air inlet is equipped with air intake filter, the position of the upper and lower end of the air intake filter is equipped with lower interface and upper interface respectively, and lower interface is fixedly connected with air inlet by fixed bolt, the surface of the air intake filter One side is equipped with filter core replacement port. In the utility model, filter core replacement port is arranged at the side of air intake filter, the installation position is more convenient to replace or clean the filter core in the inside, the whole does not need to be disassembled, only needs to disassemble outer sealing cover, simplifies disassembly step, improves the efficiency of filter core replacement, and fixed cylinder is connected together with outer sealing cover, outer sealing cover is disassembled simultaneously also with fixed cylinder is taken out, so that filter core is disassembled together, multiple steps are simplified into one step, so as to save disassembly time, more easily operate.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pumps, specifically to a vacuum pump inlet filtration device. Background Technology

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical, or physicochemical methods to evacuate a container and obtain a vacuum. In layman's terms, a vacuum pump is a device that uses various methods to improve, generate, and maintain a vacuum in a closed space. According to the working principle of a vacuum pump, it can be basically divided into two types: gas trapping pumps and gas transfer pumps. They are widely used in industries such as metallurgy, chemical industry, food, and electronic coating.

[0003] Existing technologies for vacuum pump inlet filter devices still have certain shortcomings in use. Due to the long-term use of vacuum pump inlet filter devices, it is usually necessary to replace or clean the internal filter element. Traditional vacuum pump inlet filter devices generally require disassembly for replacement or cleaning, which is a cumbersome and time-consuming process and is not convenient for replacing or cleaning the internal filter element. Utility Model Content

[0004] The purpose of this utility model is to provide a vacuum pump inlet filter device to solve the problem mentioned in the background art that, under long-term use, the internal filter element of the vacuum pump inlet filter device usually needs to be replaced or cleaned. Traditional vacuum pump inlet filter devices generally need to be disassembled for replacement or cleaning, which is a cumbersome process, takes a long time, and is inconvenient for replacing or cleaning the internal filter element.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum pump inlet filtration device, comprising a vacuum pump body, an outlet and an inlet respectively provided on both sides of the top of the vacuum pump body, an inlet filter provided above the inlet, a lower interface and an upper interface respectively provided at the upper and lower ends of the inlet filter, and the lower interface being fixedly connected to the inlet by fixing bolts, a filter element replacement port provided on one side of the surface of the inlet filter, an outer sealing cover provided outside the filter element replacement port, an inner sealing strip provided around the inside of the outer sealing cover, a fixed cylinder provided in the middle of the inside of the inlet filter, a filter element provided on the inner wall of the fixed cylinder, an impurity storage cylinder provided inside the filter element, filter cotton provided on the inner wall of the impurity storage cylinder, an inner sealing cover provided at the top of the fixed cylinder, a limiting ring provided at the bottom of the inside of the inlet filter, and a filter plate provided below the limiting ring.

[0006] In a further embodiment, the inner sealing cover and the fixed cylinder are fixedly connected by threads, and the inner sealing cover and the upper interface are fixedly connected by a combined inlay opening and a combined inlay head, and the cross-section of the combined inlay opening is set as a U-shaped structure.

[0007] In a further embodiment, the impurity storage cylinder and the inner sealing cover are connected by a fixed joint, and the fixed joint and the inner sealing cover are fixedly connected by a clamp and a bayonet.

[0008] In a further embodiment, the impurity storage cylinder and the inner sealing cover are connected by a fixed joint, and the fixed joint and the inner sealing cover are fixedly connected by a clamp and a bayonet.

[0009] In a further embodiment, the limiting ring is welded to the air intake filter, and the filter plate is inlaid to the limiting ring, and the filter plate is circular in shape.

[0010] In a further embodiment, the outer sealing cover and the air intake filter are fixedly connected by fastening bolts, and the fixing cylinder and the outer sealing cover are connected by a fixing plate and a fixing port, and the fixing plate and the fixing port are connected by a snap fastener.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, the filter replacement port is located on one side of the air intake filter. This installation position makes it easier to replace or clean the internal filter element without disassembling the whole unit. Only the outer sealing cover needs to be removed, simplifying the disassembly steps and improving the efficiency of filter element replacement. In addition, the fixing cylinder is connected to the outer sealing cover. When the outer sealing cover is removed, the fixing cylinder can also be taken out at the same time, thereby removing the filter element together. Multiple steps are simplified into one step, thereby saving disassembly time and making it easier to operate.

[0013] 2. In this utility model, an impurity storage cylinder is provided inside the filter element. The impurity storage cylinder can store impurities in the air, prevent impurities from adsorbing on the surface of the filter element, extend the service life of the filter element, and thus save costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a vacuum pump inlet filter device according to the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of the filter replacement port of this utility model;

[0016] Figure 3 This is a schematic diagram of the filter plate of this utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the fixed cylinder of this utility model;

[0018] Figure 5 This is a front view of the impurity storage cylinder of this utility model;

[0019] Figure 6 This is a schematic diagram showing the disassembled structure of the fixed cylinder and the outer sealing cap of this utility model.

[0020] In the diagram: 1. Vacuum pump body; 2. Air outlet; 3. Air inlet; 4. Fixing bolt; 5. Lower interface; 6. Air inlet filter; 7. Fastening bolt; 8. Outer sealing cover; 9. Upper interface; 10. Inner sealing strip; 11. Fixing cylinder; 12. Filter element replacement port; 13. Limiting ring; 14. Filter plate; 15. Combined mounting port; 16. Inner sealing cover; 17. Filter element; 18. Impurity storage cylinder; 19. Bayonet; 20. Clamp; 21. Fixing connector; 22. Filter cotton; 23. Insertion plate; 24. Insertion port; 25. Combined mounting head. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-6 This utility model provides an embodiment of a vacuum pump inlet filtration device, comprising a vacuum pump body 1, an outlet 2 and an inlet 3 respectively provided on both sides of the top of the vacuum pump body 1, an inlet filter 6 provided above the inlet 3, a lower interface 5 and an upper interface 9 respectively provided at the upper and lower ends of the inlet filter 6, and the lower interface 5 and the inlet 3 are fixedly connected by fixing bolts 4, a filter element replacement port 12 is provided on one side of the surface of the inlet filter 6, an outer sealing cover 8 is provided outside the filter element replacement port 12, an inner sealing strip 10 is provided around the inside of the outer sealing cover 8, a fixing cylinder 11 is provided in the middle of the inside of the inlet filter 6, a filter element 17 is provided on the inner wall of the fixing cylinder 11, an impurity storage cylinder 18 is provided inside the filter element 17, a filter cotton 22 is provided on the inner wall of the impurity storage cylinder 18, an inner sealing cover 16 is provided at the top of the fixing cylinder 11, a limiting ring 13 is provided at the bottom of the inside of the inlet filter 6, and a filter plate 14 is provided below the limiting ring 13.

[0023] The air intake filter 6 filters impurities in the air, allowing clean air to enter through the air intake port 3. The fixing bolt 4 secures the lower interface 5 to the air intake port 3. The filter element replacement port 12 opens one side of the air intake filter 6 for easy internal maintenance. The outer sealing cover 8 opens or seals the filter element replacement port 12. The inner sealing strip 10 seals the gap between the outer sealing cover 8 and the filter element replacement port 12 to prevent air leakage. The fixing cylinder 11 positions the filter element 17 for installation. The filter element 17 performs secondary filtration of impurities in the gas. The impurity storage cylinder 18 stores and collects the filtered impurities. The filter cotton 22 performs initial filtration of impurities in the gas. The inner sealing cover 16 seals the top of the fixing cylinder 11. The limiting ring 13 restricts and positions the filter plate 14 for installation. The filter plate 14 performs tertiary filtration of the gas.

[0024] The inner sealing cover 16 is fixedly connected to the fixed cylinder 11 by threads, and the inner sealing cover 16 is fixedly connected to the upper interface 9 by the combination inlay port 15 and the combination inlay head 25. The cross-section of the combination inlay port 15 is set as a U-shaped structure. The connection between the combination inlay port 15 and the combination inlay head 25 facilitates the assembly and communication of the inner sealing cover 16 and the upper interface 9. The fixed cylinder 11 is set with a grid structure around its perimeter, and the bottom of the fixed cylinder 11 is set with a sealing structure. The fixed cylinder 11 is cylindrical in shape. The grid structure allows the fixed cylinder 11 to have good air permeability around its perimeter.

[0025] The impurity storage cylinder 18 is connected to the inner sealing cover 16 via a fixing connector 21, and the fixing connector 21 and the inner sealing cover 16 are fixedly connected via a clamp 20 and a bayonet 19. The fixing connector 21 is used to install and connect the impurity storage cylinder 18 and the inner sealing cover 16.

[0026] The limiting ring 13 is connected to the intake filter 6 by welding, and the filter plate 14 is connected to the limiting ring 13 by inlay. The filter plate 14 is designed with a circular structure. The welding connection is used to increase the firmness of the installation of the limiting ring 13 and the intake filter 6, and the inlay connection is used to facilitate the installation or removal of the filter plate 14.

[0027] The outer sealing cover 8 and the air intake filter 6 are fixedly connected by fastening bolts 7, and the fixing cylinder 11 and the outer sealing cover 8 are connected by the insertion plate 23 and the insertion port 24, and the insertion plate 23 and the insertion port 24 are connected by a snap fastener. The fastening bolts 7 facilitate the installation or removal of the outer sealing cover 8 and the air intake filter 6.

[0028] Working principle: In use, connect the lower interface 5 to the air inlet 3 and fix it with the fixing bolt 4 to fix the air inlet filter 6. Connect the upper interface 9 to the air inlet pipe. Air enters the air inlet filter 6 from the air inlet pipe. The air passes through the filter cotton 22 in the impurity storage cylinder 18 to filter the impurities in the air and store them in the impurity storage cylinder 18. Then, it undergoes secondary filtration through the filter element 17, allowing clean air to diffuse outward from the periphery of the fixed cylinder 11 and be concentrated and transported downward. It undergoes a third filtration through the filter plate 14 to ensure clean air. The clean air enters the vacuum pump body 1 from the air inlet 3 and is discharged from the air outlet 2. When the internal parts need to be cleaned or the filter element 17 needs to be replaced, loosen the fastening bolt 7 to remove it, open the outer sealing cover 8, and remove the fixed cylinder 11 and its internal components. Open the inner sealing cover 16, take out the impurity storage cylinder 18 and remove it. Replace the internal filter cotton 22 and pour out the internal impurities. After cleaning, reassemble it.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vacuum pump inlet filter device, comprising a vacuum pump body (1), characterized in that: The vacuum pump body (1) has an air outlet (2) and an air inlet (3) on its top sides, respectively. An air inlet filter (6) is located above the air inlet (3). The air inlet filter (6) has a lower interface (5) and an upper interface (9) at its upper and lower ends, respectively. The lower interface (5) is fixedly connected to the air inlet (3) by a fixing bolt (4). A filter element replacement port (12) is located on one side of the surface of the air inlet filter (6). An outer sealing cover (8) is located outside the filter element replacement port (12). The inner surface of the outer sealing cover (8)... The air intake filter (6) is provided with an inner sealing strip (10) around its perimeter. A fixed cylinder (11) is provided in the middle of the interior of the air intake filter (6). A filter element (17) is provided on the inner wall of the fixed cylinder (11). An impurity storage cylinder (18) is provided inside the filter element (17). Filter cotton (22) is provided on the inner wall of the impurity storage cylinder (18). An inner sealing cover (16) is provided at the top of the fixed cylinder (11). A limiting ring (13) is provided at the bottom of the interior of the air intake filter (6). A filter plate (14) is provided below the limiting ring (13).

2. The vacuum pump inlet filter device according to claim 1, characterized in that: The inner sealing cover (16) and the fixed cylinder (11) are fixedly connected by threads, and the inner sealing cover (16) and the upper interface (9) are fixedly connected by the combined inlay port (15) and the combined inlay head (25), and the cross section of the combined inlay port (15) is set as a U-shaped structure.

3. The vacuum pump inlet filter device according to claim 1, characterized in that: The impurity storage cylinder (18) is connected to the inner sealing cover (16) through a fixed connector (21), and the fixed connector (21) and the inner sealing cover (16) are fixedly connected through a clamp (20) and a bayonet (19).

4. The vacuum pump inlet filter device according to claim 1, characterized in that: The fixed cylinder (11) has a grid structure around its perimeter, a sealing structure at the bottom, and a cylindrical shape.

5. The vacuum pump inlet filter device according to claim 1, characterized in that: The limiting ring (13) is connected to the air intake filter (6) by welding, and the filter plate (14) is connected to the limiting ring (13) by inlay, and the filter plate (14) is designed to be circular.

6. The vacuum pump inlet filter device according to claim 1, characterized in that: The outer sealing cover (8) and the air intake filter (6) are fixedly connected by fastening bolts (7), and the fixing cylinder (11) and the outer sealing cover (8) are connected by the insertion plate (23) and the insertion port (24), and the insertion plate (23) and the insertion port (24) are connected by a snap fastener.

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