A combined vacuum pump filter

Abstract

The application discloses a combined vacuum pump filter and relates to the technical field of vacuum pump filters.The combined vacuum pump filter comprises a vacuum pump mounting frame body, and a filter is fixedly installed at the lower end of the vacuum pump mounting frame body.The filter comprises a filter barrel main body, both ends of the filter barrel main body are fixedly installed with end covers, a butt joint hole is arranged at the outer center position of the front end cover, a filter barrel joint is arranged on the rear end cover, and the filter barrel joint is arranged at the upper end of the circular position of the rear end cover.In use, the four-stage separation structure is adopted to improve the separation efficiency of water vapor, oil vapor and mixed medium, and the cleanliness of the gas sucked by the vacuum pump is effectively ensured.Through the inclination angle of the joint hole, the gathering cover and the filter barrel joint, the gas flow can be used to clean the surface oil dirt of the first-stage filler filter, the second-stage liquid resistance and resistance separation baffle and the third-stage high-density filter, the filtering efficiency is ensured, and the gas flow resistance is reduced.

Description

Technical Field

[0001] This utility model specifically relates to the field of vacuum pump filter technology, and more specifically to a combined vacuum pump filter. Background Technology

[0002] In the PCB manufacturing process, the hot press is a core piece of equipment for finalizing PCB products. Its operation relies on a vacuum pump to provide a stable vacuum environment to ensure the accuracy of the pressing process and product quality. However, during operation, the hot press generates water vapor, oil vapor, and various volatiles due to the high temperature in the pressing area. If these substances directly enter the vacuum pump with the airflow, they can cause serious damage to the pump's internal components. Water vapor can easily lead to rust inside the pump body and corrosion of parts, while oil vapor will adhere to the inner wall of the pump chamber and the surface of the rotor, affecting the vacuum level and pumping speed stability. Long-term accumulation can also cause vacuum pump failure, increasing equipment maintenance costs and downtime.

[0003] To address this issue, the industry commonly uses vacuum pump filters as intermediate filtration devices between the hot press and the vacuum pump. However, existing filters have several shortcomings in practical applications. First, most filters employ a fixed installation structure, lacking convenient moving parts. When the production line needs to adjust the equipment layout or maintain the filters, external hoisting equipment or multiple people are required for handling, making the operation cumbersome and inefficient, and difficult to adapt to the flexible adjustment needs of modern production lines. Second, existing filters have a simple filtration structure design, mostly single-stage or simple two-stage filtration, which can only perform preliminary filtration of large particulate impurities or some water vapor. The separation effect on media such as oil-gas mixtures and small volatiles is poor, and a large amount of harmful substances remain in the filtered gas, failing to effectively protect the vacuum pump and shortening its service life. Incomplete filtration can also cause a decrease in pumping speed, affecting the production efficiency and product qualification rate of the hot press. In addition, some filters are difficult to maintain. Operations such as filter element replacement and liquid cleaning require disassembly of a large number of parts, which is time-consuming and further increases the operating costs of the production line.

[0004] As the PCB industry continues to demand higher product precision and production efficiency, the shortcomings of existing vacuum pump filters in terms of portability, separation effect, and ease of maintenance are becoming increasingly apparent. There is an urgent need for a new type of filtration device that can achieve efficient separation, is flexible in movement, and is easy to maintain, in order to meet the collaborative operation requirements of hot press production equipment and vacuum pumps and ensure the stable and efficient operation of the production line. Utility Model Content

[0005] The purpose of this utility model is to provide a combined vacuum pump filter, which improves the portability and separation efficiency of the combined vacuum pump filter by installing the filter with the vacuum pump mounting frame, while also facilitating maintenance; thus solving the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A combined vacuum pump filter, comprising A vacuum pump mounting bracket, with a filter fixedly installed at the lower end of the vacuum pump mounting bracket; The filter includes a filter barrel body, with caps fixedly installed at both ends. The front cap has a docking hole at the center of its outer side, and the rear cap has a filter barrel connector located at the upper end of the circular position of the rear cap. A gathering hood is provided at the center of the inner side of the front cover. The gathering hood is cone-shaped, with the bottom of the cone connected to the inner side of the front cover and the tip of the cone located on the inner side of the front end of the first-stage filter placement basket. The first-stage filter placement basket is connected to the inner side of the filter barrel body.

[0007] As a further technical solution of this utility model, the inner side of the rear end of the first-stage filter placement basket is connected to one end of the first-stage packing filter, and the other end of the first-stage packing filter is connected to the first-stage filter fixing plate.

[0008] As a further technical solution of this utility model, the lower end of the first-stage filter placement basket is provided with a front drain port of the filter bucket, which is located at the lower end of the filter bucket body; the outer rear end of the first-stage filter placement basket is provided with a second-stage liquid-blocking and material-blocking separation baffle, and the rear end of the second-stage liquid-blocking and material-blocking separation baffle is provided with a third-stage high-density filter.

[0009] As a further technical solution of this utility model, the front and rear end caps of the filter barrel body are connected in a ring array with two fixing bolts, which are respectively connected to the sealing plates on the front and rear end caps.

[0010] As a further technical solution of this utility model, the lower end of the filter barrel body is also provided with a filter barrel rear drain port, which is located at the rear end of the filter barrel body; the filter barrel connector is connected to the connecting pipe, and the upper end of the connecting pipe is connected to the vacuum pump connector.

[0011] As a further technical solution of this utility model, the vacuum pump connector is located at the upper end of the vacuum pump, and the lower end of the vacuum pump is connected to the upper surface of the fixed connection seat by a fixing bolt arranged symmetrically. An electrical control box is also fixedly installed on the upper surface of the fixed connection seat.

[0012] As a further technical solution of this utility model, a filter barrel body is installed inside the fixed connecting seat, and movable wheels are installed at the four corners of the lower end of the fixed connecting seat.

[0013] The first-stage filter fixing plate (28) is inclined, elliptical in shape, and is embedded inside the filter barrel body (21).

[0014] As a further technical solution of this utility model, an inclined guide plate (215) is provided between the third-stage high-density filter (211) and the filter barrel connector (214); multiple inclined guide plates (215) are provided, arranged in order from top to bottom, and the two ends of the inclined guide plate (215) are in contact with the inner wall of the filter barrel body (21).

[0015] Compared with the prior art, the beneficial effects of this utility model are: This utility model employs a four-stage separation structure, consisting of a gathering hood, a first-stage packing filter, a second-stage liquid-blocking and material-blocking separation baffle, and a third-stage high-density filter. This significantly improves the separation efficiency of water vapor, oil vapor, and mixed media, far surpassing existing single-stage or two-stage filtration devices. It effectively ensures the cleanliness of the gas drawn into the vacuum pump and prevents harmful substances from damaging the vacuum pump. This utility model, through the inclined angle of the connection hole and the collecting cover with the filter barrel joint, can not only use airflow to clean the oil stains on the surface of the first-stage packing filter, the second-stage liquid-blocking and material-blocking separation partition and the third-stage high-density filter, ensuring filtration efficiency, but also reduce gas flow resistance, so that the vacuum pump speed is minimized by the filter, ensuring the vacuum stability required for hot press production, and improving the production efficiency of hot press and the final product quality. In this utility model, the front and rear end caps of the filter are connected to the sealing plate by two fixing bolts in a ring array. The sealing plate can be disassembled by removing the bolts, making it easy to replace the sealing plate. At the same time, the independent setting of the front drain port and the rear drain port of the filter can quickly drain the accumulated liquid, reduce maintenance time and reduce maintenance costs. This utility model integrates a vacuum pump, an electrical control box, and a filter into one unit via a fixed connecting seat. The structure is compact, reducing the space occupied by the equipment. At the same time, it simplifies the connection process between the hot press and the vacuum pump, making it easier for the overall installation and commissioning of the production line. This invention allows the equipment to move flexibly via the four corners of the fixed connecting seat at the lower end of the vacuum pump mounting frame. It can be adjusted in position without the need for external equipment, adapting to changes in production line layout and maintenance needs. This solves the problem of inconvenient movement of existing filters and reduces the labor intensity of equipment handling and adjustment. Attached Figure Description

[0016] Figure 1This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This utility model Figure 1 Top view.

[0018] Figure 3 This utility model Figure 2 A bottom view.

[0019] Figure 4 This utility model Figure 2 Front view.

[0020] Figure 5 This utility model Figure 2 A partial sectional view.

[0021] Figure 6 This utility model Figure 5 A partial sectional view.

[0022] Figure 7 This utility model Figure 5 A magnified view of a portion of the image.

[0023] Figure 8 This utility model Figure 6 A magnified view of a portion of the image.

[0024] Figure 9 This is a planar sectional view of Embodiment 1 of this utility model.

[0025] Figure 10 This is a planar sectional view of Embodiment 2 of this utility model.

[0026] In the diagram: 1-vacuum pump mounting bracket, 2-filter; 11-Fixed connecting seat, 12-Moving wheel, 13-Vacuum pump, 14-Fixing bolt 1, 15-Vacuum pump connector, 16-Connecting pipe, 17-Electrical control box; 21-Filter barrel body, 22-Sealing cover, 23-Docking hole, 24-Second fixing bolt, 25-Gathering cover, 26-Sealing plate, 27-First-stage filter placement basket, 28-First-stage filter fixing plate, 29-First-stage packing filter, 210-Second-stage liquid and material separation baffle, 211-Third-stage high-density filter, 212-Front drain port of filter barrel, 213-Rear drain port of filter barrel, 214-Filter barrel connector; 215-Inclined guide plate. Detailed Implementation

[0027] 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.

[0028] Example 1 Please see Figure 1-9 In this embodiment of the present invention, a combined vacuum pump filter includes a vacuum pump mounting frame 1, and a filter 2 is fixedly installed at the lower end of the vacuum pump mounting frame 1. The filter 2 includes a filter barrel body 21, and a cover 22 is fixedly installed at both ends of the filter barrel body 21. The front cover 22 has a docking hole 23 at the center of the outer side, and the rear cover 22 has a filter barrel connector 214, which is located at the upper end of the circular position of the rear cover 22. A gathering cover 25 is provided at the center of the inner side of the front end cover 22. The gathering cover 25 is cone-shaped, with the bottom of the cone connected to the inner side of the front end cover 22 and the tip of the cone located on the inner side of the front end of the first-stage filter placement basket 27. The first-stage filter placement basket 27 is connected to the inner side of the filter barrel body 21.

[0029] By adopting the above technical solution, through the tilt angle between the connection hole 23 and the gathering cover 25 and the filter barrel connector 214, it is possible to use airflow to clean the oil stains on the surface of the first-stage packing filter 29, the second-stage liquid-blocking and material-blocking separation baffle 210 and the third-stage high-density filter 211, ensuring filtration efficiency, and at the same time reduce gas flow resistance, so that the pumping speed of the vacuum pump 13 is minimized by the filter 2, ensuring the vacuum stability required for hot press production, and improving the production efficiency and product shaping quality of the hot press.

[0030] In this embodiment, the inner rear end of the first-stage filter placement basket 27 is connected to one end of the first-stage packing filter 29, and the other end of the first-stage packing filter 29 is connected to the first-stage filter fixing plate 28. The first-stage filter placement basket 27 is provided with a filter barrel front drain port 212 at the lower end, and the filter barrel front drain port 212 is located at the lower end of the filter barrel body 21; the first-stage filter placement basket 27 is provided with a second-stage liquid-blocking and material-blocking separation baffle 210 on the outer side of the rear end, and a third-stage high-density filter 211 is provided at the rear end of the second-stage liquid-blocking and material-blocking separation baffle 210.

[0031] By adopting the above technical solution, a four-stage separation structure is used during operation, which consists of a gathering hood 25, a first-stage packing filter 29, a second-stage liquid and material separation baffle 210, and a third-stage high-density filter 211. This improves the separation efficiency of water vapor, oil vapor, and mixed media, which is far superior to existing single-stage or two-stage filtration devices. This effectively ensures the cleanliness of the gas drawn into the vacuum pump 13 and avoids damage to the vacuum pump from harmful substances.

[0032] In this embodiment, the filter barrel body 21 has two fixing bolts 24 connected in a ring array at the front and rear end caps 22, and the fixing bolts 24 are respectively connected to the sealing plates 26 on the front and rear end caps 22. The filter barrel body 21 is also provided with a filter barrel rear drain port 213 at the lower end, and the filter barrel rear drain port 213 is located at the rear end of the filter barrel body 21; the filter barrel connector 214 is connected to the connecting pipe 16, and the upper end of the connecting pipe 16 is connected to the vacuum pump connector 15.

[0033] By adopting the above technical solution, the front and rear end caps 22 of the filter 2 are connected to the sealing plate 26 by the fixing bolts 24 of the annular array. The sealing plate 26 can be disassembled by removing the bolts, which makes it easy to replace the sealing plate 26. At the same time, the independent setting of the front drain port 212 and the rear drain port 213 of the filter can quickly drain the accumulated liquid, reduce maintenance time, and reduce maintenance costs.

[0034] In this embodiment, the vacuum pump connector 15 is located at the upper end of the vacuum pump 13, and the lower end of the vacuum pump 13 is connected to the upper surface of the fixed connecting seat 11 by symmetrically arranged fixing bolts 14. An electrical control box 17 is also fixedly installed on the upper surface of the fixed connecting seat 11.

[0035] By adopting the above technical solution, the vacuum pump 13, the electrical control box 17 and the filter 2 are integrated into one unit through the fixed connection seat 11. The structure is compact, reducing the space occupied by the equipment. At the same time, it simplifies the connection process between the hot press and the vacuum pump 13, making it easier for the overall installation and commissioning of the production line.

[0036] In this embodiment, a filter barrel body 21 is installed inside the fixed connecting seat 11, and a movable wheel 12 is installed at each of the four corners of the lower end of the fixed connecting seat 11.

[0037] By adopting the above technical solution, the equipment can be moved flexibly through the four corners of the fixed connecting seat 11 at the lower end of the vacuum pump mounting frame 1 and the moving wheels 12. The position can be adjusted without the aid of external equipment, adapting to changes in production line layout and maintenance needs. This solves the problem of inconvenient movement of existing filters and reduces the labor intensity of equipment handling and adjustment.

[0038] Example 2 Please see the appendix Figure 10The first-stage filter fixing plate (28) is inclined, elliptical in shape, and is embedded inside the filter barrel body (21).

[0039] Furthermore, an inclined guide plate (215) is provided between the third-stage high-density filter (211) and the filter barrel connector (214); multiple inclined guide plates (215) are provided, arranged sequentially from top to bottom, and the two ends of the inclined guide plate (215) are in contact with the inner wall of the filter barrel body (21).

[0040] By adopting the above technical solution, the first-stage filter fixing plate (28) is set at an inclination, which ensures that the incoming gas is transported at an inclination angle. When the oil is captured by the first-stage filter fixing plate (28), it can drip down on its own according to its own weight. In addition, the incoming air also has a certain blowing force on the oil, thereby preventing the oil from accumulating.

[0041] In addition, the inclined guide plate (215) can better ensure that the incoming air is delivered at an inclined angle.

[0042] The working principle of this utility model is as follows: The mixed gas containing water vapor, oil vapor and volatiles generated by the hot press enters the body 21 of the filter barrel through the docking hole 23 at the center of the front cover 22 of the filter 2; it first comes into contact with the conical gathering hood 25 on the inner side of the front cover 22. The gathering hood 25 uses the conical structure to initially condense and gather the oil in the gas, so that some oil adheres to the surface of the hood and drips down, thus initially reducing the oil content in the gas and completing the first stage of pretreatment. The gas, after preliminary treatment, continues to flow into the first-stage filter basket 27. The first-stage packing filter 29 inside the basket performs a second-stage filtration and separation of water vapor, some impurities, and residual oil in the gas. Subsequently, the gas flows through a second-stage liquid and solid separation baffle 210 on the outer rear end of the first-stage filter basket 27. The baffle further blocks unfiltered liquid and solid impurities, achieving a third-stage separation. Finally, the gas enters a third-stage high-density filter 211, which performs deep filtration of tiny particles, residual oil, and volatiles in the gas, completing a fourth-stage fine separation to ensure gas cleanliness. Since the docking hole 23 is located at the center of the front cover 22, and the filter bucket connector 214 is located at the upper end of the center of the rear cover 22, the two form an inclined airflow channel, so that the gas maintains an inclined angle with each stage of filter element when flowing in the filter bucket body 21; when the filter element surface is partially blocked by oil stains, the inclined airflow can blow the oil stains along the filter element surface, eventually causing the oil stains to accumulate and drip to the bottom of the filter bucket, effectively reducing the coverage area of ​​oil stains on the filter element and ensuring filtration efficiency and pumping speed stability; The clean gas, after being filtered through four stages, enters the connecting pipe 16 through the filter barrel connector 214 on the rear cover 22, and is then transported to the vacuum pump 13 through the vacuum pump connector 15 to provide clean intake gas for the vacuum pump. The liquid generated during the filtration process is discharged through the front drain port 212 and the rear drain port 213 at the lower end of the filter barrel body 21, respectively, to prevent the liquid from accumulating in the barrel and affecting the filtration effect. When in use, a four-stage separation structure is adopted, which uses a collection hood 25, a first-stage packing filter 29, a second-stage liquid and material separation baffle 210, and a third-stage high-density filter 211 to improve the separation efficiency of water vapor, oil vapor and mixed media. This is far superior to existing single-stage or two-stage filtration devices, effectively ensuring the cleanliness of the gas drawn into the vacuum pump 13 and avoiding damage to the vacuum pump by harmful substances. By using the inclined angle between the connection hole 23 and the collecting cover 25 and the filter barrel connector 214, airflow can be used to clean the oil stains on the surface of the first-stage packing filter 29, the second-stage liquid-blocking and material-blocking separation baffle 210 and the third-stage high-density filter 211, ensuring filtration efficiency. At the same time, it can reduce gas flow resistance, minimize the impact of the filter 2 on the pumping speed of the vacuum pump 13, ensure the vacuum stability required for hot press production, and improve the production efficiency and product shaping quality of the hot press. The front and rear end caps 22 of the filter 2 are connected to the sealing plate 26 by the fixing bolts 24 of the annular array. The sealing plate 26 can be disassembled by removing the bolts, which makes it easy to replace the sealing plate 26. At the same time, the independent setting of the front drain port 212 and the rear drain port 213 of the filter can quickly drain the accumulated liquid, reduce maintenance time and reduce maintenance costs. The vacuum pump 13, electrical control box 17 and filter 2 are integrated into one unit through fixed connection seat 11, which has a compact structure, reduces the space occupied by the equipment, and simplifies the connection process between the hot press and the vacuum pump 13, making it easier for the overall installation and commissioning of the production line. The equipment can be moved flexibly by the four corner casters 12 of the fixed connecting seat 11 at the lower end of the vacuum pump mounting frame 1. It can be adjusted in position without the aid of external equipment, adapting to changes in production line layout and maintenance needs. This solves the problem of inconvenient movement of existing filters and reduces the labor intensity of equipment handling and adjustment.

[0043] 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.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A combined vacuum pump filter, characterized in that: include A vacuum pump mounting frame (1) is provided, and a filter (2) is fixedly installed at the lower end of the vacuum pump mounting frame (1). The filter (2) includes a filter barrel body (21), and both ends of the filter barrel body (21) are fixedly installed with caps (22). The front cap (22) has a docking hole (23) at the center of the outer side, and the rear cap (22) has a filter barrel connector (214) on it. The filter barrel connector (214) is located at the upper end of the circular position of the rear cap (22). The front end cap (22) is provided with a gathering cover (25) at the center of the inner side. The gathering cover (25) is cone-shaped. The bottom of the gathering cover (25) is connected to the inner side of the front end cap (22), and the tip of the cone is located on the inner side of the front end of the first-stage filter placement basket (27). The first-stage filter placement basket (27) is connected to the inner side of the filter barrel body (21).

2. The combined vacuum pump filter according to claim 1, characterized in that: The inner rear end of the first-stage filter placement basket (27) is connected to one end of the first-stage packing filter (29), and the other end of the first-stage packing filter (29) is connected to the first-stage filter fixing plate (28).

3. The combined vacuum pump filter according to claim 2, characterized in that: The first-stage filter placement basket (27) is provided with a filter barrel front drain port (212) at the lower end, and the filter barrel front drain port (212) is located at the lower end of the filter barrel body (21); the first-stage filter placement basket (27) is provided with a second-stage liquid-blocking and material-blocking separation baffle (210) on the outer side of the rear end, and a third-stage high-density filter (211) is provided at the rear end of the second-stage liquid-blocking and material-blocking separation baffle (210).

4. The combined vacuum pump filter according to claim 3, characterized in that: The filter barrel body (21) has two fixing bolts (24) arranged in a ring array at the front and rear end caps (22). The fixing bolts (24) are connected to the sealing plates (26) on the front and rear end caps (22) respectively.

5. The combined vacuum pump filter according to claim 4, characterized in that: The filter barrel body (21) is also provided with a filter barrel rear drain port (213) at the lower end, and the filter barrel rear drain port (213) is located at the rear end of the filter barrel body (21); the filter barrel connector (214) is connected to the connecting pipe (16), and the upper end of the connecting pipe (16) is connected to the vacuum pump connector (15).

6. The combined vacuum pump filter according to claim 5, characterized in that: The vacuum pump connector (15) is located at the upper end of the vacuum pump (13). The lower end of the vacuum pump (13) is connected to the upper surface of the fixed connection seat (11) by a fixing bolt (14) arranged symmetrically. An electrical control box (17) is also fixedly installed on the upper surface of the fixed connection seat (11).

7. The combined vacuum pump filter according to claim 6, characterized in that: The filter barrel body (21) is installed inside the fixed connecting seat (11), and the four corners of the lower end of the fixed connecting seat (11) are all equipped with casters (12).

8. The combined vacuum pump filter according to claim 2, characterized in that: The first-stage filter fixing plate (28) is inclined, elliptical in shape, and is embedded inside the filter barrel body (21).

9. The combined vacuum pump filter according to claim 5, characterized in that: An inclined guide plate (215) is also provided between the third-stage high-density filter (211) and the filter barrel connector (214); multiple inclined guide plates (215) are provided and arranged in order from top to bottom, and the two ends of the inclined guide plate (215) are in contact with the inner wall of the filter barrel body (21).

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