Air inlet filtering device of vacuum pump

Abstract

The utility model discloses a vacuum pump air inlet filtering device which comprises a cylinder body and further comprises a transparent cover plate, the cylinder body is provided with a filtering cavity with an opening in one end, the transparent cover plate is connected to the cylinder body through a plurality of quick clamps so as to seal the filtering cavity, and the other end of the cylinder body is provided with an air outlet connector communicated with the filtering cavity. The side wall of the cylinder is provided with an air inlet connector communicated with the filtering cavity, a primary filter is detachably installed at the air inlet connector, a cylindrical supporting framework is further fixed in the cylinder, the supporting framework is provided with a cavity communicated with the air outlet connector, and the side wall of the supporting framework is provided with a plurality of air inlet grooves communicated with the cavity. A medium-efficiency filter screen is arranged on the supporting framework in a sleeving manner; the utility model has the advantages of efficiently filtering paper scraps and dust, protecting the vacuum pump, prolonging the service life, ensuring stable vacuum degree and reducing the maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pumps, in particular to an air intake filter device for a vacuum pump. Background Art

[0002] Vacuum technology plays an indispensable role in modern industrial production, especially in industries such as printing, coating, origami, which rely on vacuum to ensure stable material handling and delivery, improve production efficiency and product quality. As one of the key components, the vacuum roller can adsorb flexible materials such as film and paper by generating negative pressure on its surface, ensuring that they are fixed in position during processing, thereby avoiding increased scrap rates caused by displacement or wrinkles. Especially in the paper towel manufacturing industry, the use of vacuum pumps in conjunction with vacuum rollers can effectively maintain a low air pressure environment, allowing the material to fit tightly on the roller surface, providing necessary support for subsequent processes.

[0003] In the paper extraction and stacking process, in order to ensure the continuity of production and the quality of the product, the vacuum system must maintain efficient operation. However, in the actual operation process, the air extracted by the vacuum pump will inevitably carry tiny particles such as paper scraps, fibers and dust from the production site. If these substances enter the vacuum pump directly without proper treatment, it will not only increase the degree of wear of the equipment, but also may cause blockage of the internal structure, thereby affecting the efficiency and reliability of the vacuum pump. Therefore, for such applications, it is particularly important to equip an effective air intake filter device, which can protect the vacuum pump from contamination, extend its service life, and ensure stable vacuum output.

[0004] Although there are many types of filter devices on the market to protect vacuum pumps from particulate matter, existing solutions still have certain limitations. For example, some filters are not compact enough, occupy a large space, and are difficult to adapt to small installation environments; in addition, traditional filter elements are frequently replaced and have high maintenance costs, which increases the operating burden of enterprises; more importantly, some filter devices cannot completely block fine particles. After long-term operation, residual impurities may gradually accumulate inside the vacuum pump, resulting in performance degradation or even failure and downtime.

[0005] The above problems limit the application scope and development potential of the existing technology. There is an urgent need for a more optimized vacuum pump intake filter device to overcome these shortcomings and meet the growing industrial needs. Utility Model Content

[0006] The utility model aims to provide a vacuum pump air intake filter device, which can efficiently filter paper scraps and dust, protect the vacuum pump, extend its service life, ensure a stable vacuum degree, and reduce maintenance costs.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum pump air intake filter device, comprising a cylinder and a transparent cover, the cylinder having a filter cavity with an opening at one end, the transparent cover being connected to the cylinder by a plurality of quick clamps to close the filter cavity, the other end of the cylinder being provided with an air outlet interface connected to the filter cavity, the side wall of the cylinder being provided with an air intake interface connected to the filter cavity, a primary filter being detachably installed at the air intake interface, a cylindrical support frame being fixed in the cylinder, the support frame having a cavity connected to the air outlet interface, a plurality of air intake grooves connected to the cavity being provided on the side wall of the support frame, and a medium-efficiency filter being sleeved on the support frame.

[0008] It also includes a base, which is fixed to the lower end of the cylinder and has anchor bolts installed on the base.

[0009] The quick clamp is a vertical quick clamp, and the quick clamp has a clamp head, on which a rubber contact for contacting with a transparent cover plate is installed.

[0010] The transparent cover is made of tempered pressure-resistant glass, and a rubber sealing ring is arranged around the transparent cover, and the rubber sealing ring is in sealing cooperation with the end surface of the cylinder.

[0011] The primary filter comprises a filter frame and a non-woven filter bag. The filter frame is connected to the air inlet interface via a clamp, and the non-woven filter bag is connected to the lower end of the filter frame.

[0012] The medium-efficiency filter is made of synthetic fiber. An elastic tightening ring is arranged at one end of the medium-efficiency filter. The elastic tightening ring is interference-fitted with the supporting frame.

[0013] A first flange is fixed to the end surface of the air inlet interface, and a plurality of first mounting holes are evenly arranged on the first flange in a circumferential direction. A second flange is fixed to the end surface of the air outlet interface, and a plurality of second mounting holes are evenly arranged on the second flange in a circumferential direction.

[0014] A handle is fixed at the center of the transparent cover.

[0015] Compared with the prior art, the advantages of the utility model are: a closed filter chamber is formed by the cylinder and the transparent cover, wherein the design of the transparent cover allows the operator to observe the working status of the filter device and the degree of contamination of the filter element at any time, thereby facilitating timely maintenance; the primary filter arranged at the air inlet interface can first intercept larger particles, such as paper scraps and fibers, thereby reducing the burden on subsequent filtering links; the internal cylindrical support frame not only provides a stable structural support, but its specially designed side wall air inlet groove can also ensure uniform airflow distribution and improve filtration efficiency; the medium-efficiency filter screen mounted outside the support frame further filters out finer impurities, thereby ensuring that the output airflow cleanliness meets the use requirements of the vacuum pump.

[0016] This multi-stage filtration configuration can effectively extend the service life of the vacuum pump and reduce the maintenance frequency. At the same time, the application of quick clamps makes the disassembly and assembly process simple and quick, greatly reducing maintenance time and labor intensity. The overall design is compact and easy to install, fully considering the actual application needs of the industrial site, and can provide reliable air intake protection for the vacuum pump, thereby improving the operating stability and service life of the entire vacuum system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the cylinder in the utility model;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the primary filter in the utility model;

[0022] In the figure, 1. cylinder; 2. transparent cover; 3. quick clamp; 4. filter chamber; 5. air outlet interface; 6. air inlet interface; 7. primary filter; 8. supporting frame; 9. chamber; 10. air inlet slot; 11. medium-efficiency filter; 12. base; 13. anchor bolt; 14. chuck; 15. rubber contact; 16. rubber sealing ring; 17. filter frame; 18. non-woven filter bag; 19. elastic tightening ring; 20. first flange; 21. first mounting hole; 22. second flange; 23. second mounting hole; 24. handle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] Embodiment 1: Figure 1-Figure 4 As shown, a vacuum pump air intake filter device includes a barrel 1 and a transparent cover 2. The barrel 1 has a filter chamber 4 with an opening at one end. The transparent cover 2 is connected to the barrel 1 through a plurality of quick clamps 3 to close the filter chamber 4. The other end of the barrel 1 is provided with an air outlet interface 5 connected to the filter chamber 4. The side wall of the barrel 1 is provided with an air inlet interface 6 connected to the filter chamber 4. A primary filter 7 is detachably installed at the air inlet interface 6. A cylindrical support frame 8 is also fixed in the barrel 1. The support frame 8 has a cavity 9 connected to the air outlet interface 5. A plurality of air inlet grooves 10 connected to the cavity 9 are provided on the side wall of the support frame 8, and a medium-efficiency filter screen 11 is sleeved on the support frame 8.

[0025] Embodiment 2: Figure 1-Figure 4 As shown, the embodiment 1 is different from the embodiment 1 in that it further includes a base 12 , which is fixed to the lower end of the cylinder 1 , and anchor bolts 13 are installed on the base 12 .

[0026] The base 12 provides a solid support foundation for the entire filtering device, effectively preventing the equipment from shifting or shaking during operation, ensuring the stability of the filtering system, and the use of anchor bolts 13 enables the device to be firmly fixed to the ground or other installation platforms, which not only enhances the stability of the overall structure, but also effectively reduces the vibration of the equipment during operation and prolongs its service life. This fixing method facilitates the standardized installation and subsequent maintenance of the equipment. The operator can flexibly adjust the installation position according to the site conditions, and can also conveniently disassemble and assemble when maintenance is required.

[0027] The quick clamp 3 is a vertical quick clamp 3 , and the quick clamp 3 has a clamp head 14 , on which a rubber contact 15 for contacting the transparent cover plate 2 is mounted.

[0028] The vertical structural design makes the clamp operation more ergonomic, and the operator can easily apply pressure to reduce fatigue during operation; the rubber contact 15 installed on the clamp 14 can provide a larger contact area and a better buffering effect when in contact with the transparent cover 2, which can not only evenly distribute the pressure and avoid local stress concentration and damage to the transparent cover, but also reduce the risk of direct contact between the metal and the transparent cover during the clamping process, effectively prevent scratches or other mechanical damage, and extend the service life of the transparent cover.

[0029] The transparent cover plate 2 is made of tempered pressure-resistant glass, and a rubber sealing ring 16 is provided around the cover plate 2 . The rubber sealing ring 16 is in sealing cooperation with the end face of the cylinder body 1 .

[0030] Tempered pressure-resistant glass has excellent mechanical strength and impact resistance. It can withstand the pressure difference generated when the vacuum system is running, while maintaining good transparency, so that the operator can visually observe the internal conditions of the filter chamber 4 and promptly detect the pollution and blockage of the filter element. The rubber sealing ring 16 arranged on the periphery will produce moderate deformation when under pressure, forming a reliable sealing interface with the end face of the cylinder 1, effectively preventing air leakage and ensuring the vacuum degree of the filtration system. This sealing structure not only ensures the airtightness of the system, but also facilitates daily disassembly and maintenance. When the filter element needs to be replaced, the cover plate can be easily removed by loosening the quick clamp 3, which greatly improves the maintenance efficiency. The overall design not only ensures the safety of use, but also realizes the convenience of maintenance, fully meeting the actual application needs of industrial sites.

[0031] The primary filter 7 includes a filter frame 17 and a non-woven filter bag 18 . The filter frame 17 is connected to the air inlet interface 6 via a clamp, and the non-woven filter bag 18 is connected to the lower end of the filter frame 17 .

[0032] The filter frame 17 is reliably connected to the air inlet interface 6 through a clamp. This connection method is not only convenient for installation and disassembly, but also ensures a stable seal between the filter and the interface. The non-woven filter bag 18 connected to the lower end of the frame adopts a bag-like structure, which can provide a larger filtering area and significantly improve the filtering effect.

[0033] The non-woven fabric material has good air permeability and retention capacity, which can effectively capture impurities while ensuring smooth airflow. The bag-shaped design also has a large dust storage capacity, which reduces the frequency of replacement and cleaning and reduces maintenance costs. When air passes through the non-woven filter bag 18, larger particles such as paper scraps and fibers will be effectively trapped in the bag, preventing these impurities from entering the subsequent filtering process.

[0034] The medium-efficiency filter screen 11 is made of synthetic fiber. An elastic tightening ring 19 is disposed at one end of the medium-efficiency filter screen 11 . The elastic tightening ring 19 is interference-fitted with the supporting frame 8 .

[0035] The synthetic fiber material has excellent filtering performance and can effectively intercept tiny particles while maintaining good air permeability to ensure smooth airflow. The elastic tightening ring 19 arranged at one end of the filter is tightly combined with the support frame 8 by interference fit. This design can automatically form a tight fit during installation to avoid air leakage and filtering dead corners. The design of the elastic tightening ring 19 not only ensures a firm connection between the filter and the support frame 8, but also facilitates the replacement operation of the filter. The operator can easily complete disassembly and assembly with the help of the characteristics of the elastic tightening ring 19.

[0036] Embodiment 3: Figure 1-Figure 4 As shown, different from the second embodiment, a first flange 20 is fixed to the end face of the air inlet interface 6, and a plurality of first mounting holes 21 are evenly arranged circumferentially on the first flange 20; a second flange 22 is fixed to the end face of the air outlet interface 5, and a plurality of second mounting holes 23 are evenly arranged circumferentially on the second flange 22.

[0037] The evenly distributed mounting holes on the two flanges provide reliable connection points for the equipment's pipeline connection. This standardized flange connection method enables the filter device to be quickly and reliably connected to pipeline systems of various specifications. The evenly distributed mounting hole design not only ensures the stability and airtightness of the connection, but also evenly distributes the installation torque, avoids local stress concentration, and extends the service life of the device. The flange design also supports modular installation and maintenance of the equipment. When system maintenance or component replacement is required, operators can easily disassemble the relevant pipelines, improving the efficiency of maintenance operations.

[0038] A handle 24 is fixed at the center of the transparent cover plate 2 .

[0039] The setting of the handle 24 provides the operator with a convenient gripping point, making the disassembly and assembly of the cover easier and safer. During daily maintenance, the operator can firmly grasp the cover through the handle 24, which can not only apply force evenly to prevent the cover from tilting or shaking, but also prevent the hand from directly contacting the glass surface and causing scratches or fingerprints. The design of the handle 24 in the center position also ensures uniform force, reduces the unbalanced state that may occur during the handling of the cover, and effectively protects the tempered glass cover.

[0040] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A vacuum pump air intake filter device, comprising a cylinder, characterized in that: The filter element is connected to the cylinder through a plurality of quick clamps to close the filter cavity; an air outlet interface connected to the filter cavity is provided at the other end of the cylinder; an air inlet interface connected to the filter cavity is provided on the side wall of the cylinder; a primary filter is detachably installed at the air inlet interface; a cylindrical support frame is fixed in the cylinder; the support frame has a cavity connected to the air outlet interface; a plurality of air inlet grooves connected to the cavity are provided on the side wall of the support frame; and a medium-efficiency filter is sleeved on the support frame.

2. The vacuum pump air intake filter device according to claim 1, characterized in that: It also includes a base, which is fixed to the lower end of the cylinder and has anchor bolts installed on the base.

3. The vacuum pump air intake filter device according to claim 1, characterized in that: The quick clamp is a vertical quick clamp, and the quick clamp has a clamp head, on which a rubber contact for contacting with a transparent cover plate is installed.

4. The vacuum pump air intake filter device according to claim 1, characterized in that: The transparent cover is made of tempered pressure-resistant glass, and a rubber sealing ring is arranged around the transparent cover, and the rubber sealing ring is in sealing cooperation with the end surface of the cylinder.

5. The vacuum pump air intake filter device according to claim 1, characterized in that: The primary filter comprises a filter frame and a non-woven filter bag. The filter frame is connected to the air inlet interface via a clamp, and the non-woven filter bag is connected to the lower end of the filter frame.

6. The vacuum pump air intake filter device according to claim 1, characterized in that: The medium-efficiency filter is made of synthetic fiber. An elastic tightening ring is arranged at one end of the medium-efficiency filter. The elastic tightening ring is interference-fitted with the supporting frame.

7. The vacuum pump air intake filter device according to claim 1, characterized in that: A first flange is fixed to the end surface of the air inlet interface, and a plurality of first mounting holes are evenly arranged on the first flange in a circumferential direction. A second flange is fixed to the end surface of the air outlet interface, and a plurality of second mounting holes are evenly arranged on the second flange in a circumferential direction.

8. The vacuum pump air intake filter device according to claim 1, characterized in that: A handle is fixed at the center of the transparent cover.

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