A rotatable dust extractor filter

Abstract

The utility model provides a rotatable dust catcher filter screen relates to dust catcher filter screen technical field, include: outer filter screen and inner filter screen, the upper end fixed mounting of outer filter screen has the top cylinder, is provided with the mounting groove on the top cylinder, the inner filter screen is installed at the mounting groove through bolt, the inner filter screen is located the inside of outer filter screen, and the buffer rubber ring is installed between the inner filter screen and outer filter screen, the utility model discloses the double -deck filtration structure of outer filter screen and inner filter screen, and the aperture of outer filter screen is greater than the inner filter screen, realizes " first rough after fine " classification filtration, through the fan blade on the fixed plate of air current, makes the synchronous rotation of inner, outer filter screen, increases the sufficiency and uniformity of filter screen and air current contact, reduces the filter dead angle, and the outer filter screen is stainless steel woven mesh, and the corrosion resistance wear resistance prolongs the life, and the outer surface of inner filter screen has the nanometer antibacterial coating, and the bacteria breeding is inhibited, and the centrifugal force of filter screen rotation can shake off part of adhering dust, reduces the block, prolongs the cleaning period and the service life.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaner filter technology, and in particular to a rotatable vacuum cleaner filter. Background Technology

[0002] With increasing demands for cleanliness in their living environments, vacuum cleaners, as efficient cleaning tools, are widely used in homes, offices, and other settings. The filter, an indispensable core component of a vacuum cleaner, plays a crucial role in filtering dust and impurities from the air. Its performance directly affects the cleanliness of the air discharged from the vacuum cleaner and its effectiveness in intercepting inhaled pollutants, thus significantly impacting indoor air quality and user health. During vacuum cleaner operation, airflow carrying dust enters the device and must be filtered by the filter before clean air is discharged. Therefore, the rationality of the filter's design, its filtration accuracy, and its operational stability are key indicators for evaluating the quality of a vacuum cleaner product. This invention relates to a rotatable vacuum cleaner filter.

[0003] Existing filters lack effective collaborative design and are mostly fixed, resulting in insufficient and uneven contact between the filter and the airflow, which easily creates filtration dead zones and makes it difficult to meet higher requirements for filtration effect and dust collection efficiency. Utility Model Content

[0004] This utility model relates to a rotatable vacuum cleaner filter to solve the technical problems mentioned in the background art.

[0005] In a first aspect, this utility model provides a rotatable vacuum cleaner filter, specifically comprising: an outer filter and an inner filter; a top cylinder is fixedly installed at the upper end of the outer filter, and an installation groove is provided on the top cylinder; the inner filter is installed in the installation groove by bolts, and the inner filter is located inside the outer filter; a buffer rubber ring is installed between the inner filter and the outer filter; a bottom cover is installed at the lower end of the inner filter, and the bottom cover is bolted to the lower end of the outer filter; the filtration aperture of the outer filter is larger than that of the inner filter; the outer filter is used to filter larger dust particles, and the inner filter is used to filter fine dust particles; a fixing plate is fixed inside the inner filter, and a fan blade is fixedly installed on the fixing plate.

[0006] Furthermore, a connecting seat is threaded onto the upper end of the top cylinder, and a rotatable rotating cylinder is mounted on the connecting seat. The upper end of the rotating cylinder is connected to the interior of the vacuum cleaner.

[0007] Furthermore, two annular grooves are provided between the connecting seat and the rotating cylinder, and rolling elements are installed in the annular grooves.

[0008] Furthermore, the connecting seat is provided with two threaded through holes, and each of the two threaded through holes is threaded with a locking screw, which is respectively pressed against the rolling element in the two annular grooves.

[0009] Furthermore, the outer filter screen is made of stainless steel woven mesh, the inner filter screen is made of HEPA filter material, and the outer surface of the inner filter screen is coated with a nano antibacterial coating.

[0010] Furthermore, the contact area between the rotating cylinder and the connecting seat is coated with a polytetrafluoroethylene wear-resistant coating.

[0011] Furthermore, the inner filter screen is provided with reinforcing ribs on its exterior.

[0012] This utility model provides a rotatable vacuum cleaner filter, which has the following beneficial effects:

[0013] This invention achieves graded filtration by setting up a dual-layer filtration structure with an outer filter and an inner filter, with the outer filter having a larger pore size than the inner filter. The outer filter can efficiently intercept larger dust particles, preventing them from clogging the inner filter, while the inner filter performs deep filtration of fine particles. Combined with the characteristics of HEPA filter material, it can effectively improve the overall filtration accuracy and meet the purification needs of fine pollutants. At the same time, the fan blades on the fixed plate drive the inner and outer filters to rotate synchronously when the airflow is flowing. In the rotating state, the contact between the filter and the airflow is more complete and uniform, reducing filtration dead angles and further improving the capture efficiency of the dual-layer filter for dust of different particle sizes. The rotation of the fan blades can also help enhance airflow circulation, indirectly improving dust collection efficiency.

[0014] In addition, in this utility model, the outer filter screen is made of stainless steel woven mesh, which has high corrosion resistance and wear resistance, extending its service life. The nano antibacterial coating sprayed on the outer surface of the inner filter screen can inhibit bacterial growth, prevent the filter screen from becoming a source of pollution during long-term use, and ensure the hygiene and safety of the use environment. At the same time, the centrifugal force generated by the rotation of the filter screen can cause some of the dust attached to the surface of the filter screen to be thrown off, reducing the probability of filter screen clogging and extending the cleaning cycle and service life.

[0015] In addition, the buffer rubber ring installed between the inner and outer filter screens in this invention can reduce the direct friction and collision between the two during rotation and use, thus playing a buffering and protective role. The reinforcing ribs on the outside of the inner filter screen can improve its overall structural strength and prevent deformation due to excessive suction or rotation. At the same time, the bottom cover and the lower end of the outer filter screen are locked with bolts to ensure the relative position of the double-layer filter screen is stable during rotation, reducing noise and wear caused by shaking. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0018] In the attached diagram:

[0019] Figure 1 A schematic diagram of the overall structure of this application is shown.

[0020] Figure 2 A schematic diagram of the structure of the outer filter and the inner filter of this application is shown.

[0021] Figure 3 A schematic diagram of the structure of the lower part of the inner filter screen of this application is shown.

[0022] Figure 4 A structural schematic diagram of the fixing plate portion of this application is shown.

[0023] Figure 5 A cross-sectional view of the connecting seat and rotating cylinder of this application is shown.

[0024] List of reference numerals

[0025] 1. External filter screen; 2. Internal filter screen; 11. Top cylinder; 111. Mounting groove; 21. Buffer rubber ring; 22. Bottom cover; 23. Fixing plate; 231. Fan blade; 3. Connecting seat; 31. Rotating cylinder; 32. Rolling element; 33. Locking screw; 24. Reinforcing rib. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Please refer to Figures 1 to 5 Example 1:

[0028] This utility model proposes a rotatable vacuum cleaner filter, including: an outer filter 1 and an inner filter 2; a top cylinder 11 is fixedly installed on the upper end of the outer filter 1, and an installation groove 111 is provided on the top cylinder 11; the inner filter 2 is installed in the installation groove 111 by bolts, and the inner filter 2 is located inside the outer filter 1; a buffer rubber ring 21 is installed between the inner filter 2 and the outer filter 1; a bottom cover 22 is installed on the lower end of the inner filter 2, and the bottom cover 22 is connected and locked to the lower end of the outer filter 1 by bolts; and the filter aperture of the outer filter 1 is larger than the filter aperture of the inner filter 2; the outer filter 1 is used to filter larger dust particles, and the inner filter 2 is used to filter fine dust particles; a fixing plate 23 is fixed inside the inner filter 2, and a fan blade 231 is fixedly installed on the fixing plate 23.

[0029] In this embodiment of the utility model, a connecting seat 3 is threaded onto the upper end of the top cylinder 11. A rotatable rotating cylinder 31 is installed on the connecting seat 3. The upper end of the rotating cylinder 31 is connected to the interior of the vacuum cleaner. Two annular grooves are provided between the connecting seat 3 and the rotating cylinder 31. Rolling elements 32 are installed in the annular grooves. Their function is to convert the sliding friction between the connecting seat 3 and the rotating cylinder 31 into rolling friction through the rolling action of the rolling elements 32, which greatly reduces the frictional resistance when the two rotate relative to each other. This makes the rotating cylinder 31 drive the connecting seat 3 and the connected components such as the outer filter 1 and inner filter 2 of the top cylinder 11 to rotate more smoothly and reduces power loss.

[0030] In this embodiment of the utility model, the connecting seat 3 is provided with two threaded through holes, and a locking screw 33 is threaded into each of the two threaded through holes. The two locking screws 33 are respectively pressed against the rolling elements 32 in the two annular grooves. The function is that the two locking screws 33 are respectively pressed against the rolling elements 32 in the two annular grooves, which can restrict the rolling of the rolling elements 32 by applying pressure, thereby fixing the relative position of the connecting seat 3 and the rotating cylinder 31, realizing the locking of the rotation state, and flexibly switching the rotation or fixing mode of the filter screen according to the usage requirements.

[0031] In this embodiment of the utility model, the outer filter 1 is made of stainless steel woven mesh, and the inner filter 2 is made of HEPA filter material. The outer surface of the inner filter 2 is coated with a nano-antibacterial coating. The functions of the outer filter 1 are as follows: the stainless steel woven mesh material of the outer filter 1, with its high strength, wear resistance and corrosion resistance, can withstand the impact of large dust particles and friction during long-term use, extending the service life of the outer filter 1, while facilitating cleaning and maintenance, ensuring that it maintains a good coarse filtration effect for a long time. The HEPA filter material of the inner filter 2 utilizes the high efficiency of HEPA filter material in intercepting fine particles, which can deeply filter fine dust and pollutants, significantly improving the overall filtration accuracy. The nano-antibacterial coating on the outer surface of the inner filter 2 can effectively inhibit the growth of bacteria, mold and other microorganisms on the surface of the filter material, preventing the inner filter 2 from becoming a source of pollution due to dust accumulation, ensuring the cleanliness and hygiene of the filtered air, and improving the safety of use. The combination of the three enhances the filtration performance and takes into account durability and hygiene.

[0032] In Example 2, based on Example 1, the contact area between the rotating cylinder 31 and the connecting seat 3 is coated with a polytetrafluoroethylene wear-resistant coating. Its function is to effectively reduce the frictional resistance between the two during relative rotation by utilizing the extremely low coefficient of friction and excellent wear resistance of polytetrafluoroethylene, making the rotation smoother and reducing energy loss caused by friction.

[0033] In Example 3, based on Examples 1 and 2, the inner filter 2 is provided with reinforcing ribs 24 on its exterior. The function of the reinforcing ribs 24 on the exterior of the inner filter 2 is to significantly enhance the overall structural strength and deformation resistance of the inner filter 2. When the filter is rotated with the fan blades 231 and generates centrifugal force, or when it is subjected to strong suction from inside the vacuum cleaner, the reinforcing ribs 24 can disperse the stress borne by the inner filter 2, preventing it from wrinkling or breaking due to uneven stress, and ensuring the structural integrity of the inner filter 2.

[0034] The working principle of this embodiment is as follows: First, the rotating cylinder 31 is connected to the inside of the vacuum cleaner to achieve the assembly and fixation of the filter screen with the vacuum cleaner. When the vacuum cleaner is started and generates negative pressure airflow, the airflow enters the filter area from the outside and first contacts the outer filter screen 1. The outer filter screen 1 is made of stainless steel woven mesh, which uses its large pore size to intercept larger dust particles, completing the primary filtration. The airflow after the primary filtration enters the gap between the outer filter screen 1 and the inner filter screen 2, and then passes through the inner filter screen 2. The inner filter screen 2 uses HEPA filter material, which can perform deep filtration of fine particles. Its outer surface nano antibacterial coating can inhibit bacterial growth and ensure the cleanliness of the filtered air. During the airflow process, the fan blades 231 on the fixing plate 23 inside the inner filter screen 2 rotate under the thrust of the airflow, thereby driving the inner filter screen 2 and the outer filter screen 1 locked to it by the bottom cover 22 to rotate synchronously. This synchronous rotation brings multiple benefits: First, it allows the filter screen to have more sufficient and uniform contact with the airflow, reduces filtration dead angles, and improves the filtration efficiency of the outer filter screen 1. The system effectively intercepts large dust particles and fine particles through the inner filter 2. Secondly, the centrifugal force generated by the rotation can dislodge some dust adhering to the filter surface, reducing the probability of clogging and extending the filter cleaning cycle. Thirdly, the airflow disturbance generated by the rotation helps enhance the airflow circulation inside the vacuum cleaner, indirectly improving suction efficiency. Simultaneously, the rolling element 32 between the connecting seat 3 and the rotating cylinder 31 converts sliding friction into rolling friction. Combined with the PTFE wear-resistant coating at the contact point between the rotating cylinder 31 and the connecting seat 3, this ensures smooth overall rotation with minimal wear. If it is necessary to fix the filter and prevent it from rotating, the locking screw 33 on the connecting seat 3 can be tightened to press against the rolling element 32, restricting the relative rotation between the rotating cylinder 31 and the connecting seat 3, thus achieving a fixed filter state switching. Furthermore, the reinforcing ribs 24 on the outside of the inner filter 2 enhance its structural stability, and the buffer rubber ring 21 reduces friction and collision between the inner filter 2 and the outer filter 1, ensuring that the double-layer filter can stably and efficiently complete the filtration work in both rotating and fixed states.

[0035] The following points should be noted in this article:

[0036] 1. The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment; other structures can refer to general designs.

[0037] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0038] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A rotatable vacuum cleaner filter, comprising: An outer filter (1) and an inner filter (2); characterized in that a top cylinder (11) is fixedly installed at the upper end of the outer filter (1), and an installation groove (111) is provided on the top cylinder (11). The inner filter (2) is installed in the installation groove (111) by bolts. The inner filter (2) is located inside the outer filter (1). A buffer rubber ring (21) is installed between the inner filter (2) and the outer filter (1). A bottom cover (22) is installed at the lower end of the inner filter (2). The bottom cover (22) is connected and locked to the lower end of the outer filter (1) by bolts. The filter aperture of the outer filter (1) is larger than that of the inner filter (2). The outer filter (1) is used to filter larger dust particles, and the inner filter (2) is used to filter fine dust particles. A fixing plate (23) is fixed inside the inner filter (2), and a fan blade (231) is fixedly installed on the fixing plate (23).

2. A rotatable vacuum cleaner filter according to claim 1, characterized in that, The top cylinder (11) is threaded with a connecting seat (3) at its upper end. A rotatable rotating cylinder (31) is installed on the connecting seat (3). The upper end of the rotating cylinder (31) is connected to the inside of the vacuum cleaner.

3. A rotatable vacuum cleaner filter according to claim 2, characterized in that, Two annular grooves are provided between the connecting seat (3) and the rotating cylinder (31), and rolling elements (32) are installed in the annular grooves.

4. A rotatable vacuum cleaner filter according to claim 3, characterized in that, The connecting seat (3) is provided with two threaded through holes, and each of the two threaded through holes is threaded with a locking screw (33). The two locking screws (33) are respectively pressed against the rolling elements (32) in the two annular grooves.

5. A rotatable vacuum cleaner filter according to claim 1, characterized in that, The outer filter (1) is made of stainless steel woven mesh, the inner filter (2) is made of HEPA filter material, and the outer surface of the inner filter (2) is coated with a nano antibacterial coating.

6. A rotatable vacuum cleaner filter according to claim 3, characterized in that, The contact area between the rotating cylinder (31) and the connecting seat (3) is coated with a polytetrafluoroethylene wear-resistant coating.

7. A rotatable vacuum cleaner filter according to claim 3, characterized in that, The inner filter (2) is provided with reinforcing ribs (24) on its exterior.

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