Multi-way valve sealed type filtering structure and filter

Abstract

The invention discloses a multi-way valve sealed type filtering structure and a filter. The multi-way valve sealed type filtering structure specifically comprises a first filtering assembly, a second filtering assembly and a third filtering assembly which are sequentially communicated in the first direction; the first filtering assembly comprises an inlet channel, a first channel and a waste discharging channel, the inlet channel is communicated with the first channel and the waste discharging channel, and the first channel and the waste discharging channel are separated through a first filtering unit; the inlet channel is obliquely arranged relative to the first direction and higher than the first channel; the second filtering assembly is communicated with the first channel; the third filtering assembly comprises a second channel, a discharging channel and a settling channel, and the second channel is communicated with an outlet of the second filtering assembly and is respectively communicated with the discharging channel and the settling channel; the discharge channel and the sedimentation channel are separated by a third filter unit; the settling channel is obliquely arranged relative to the first direction and is lower than the second channel; by means of the arrangement, the size of the filter is reduced, and the filtering efficiency is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of filter structures, and in particular to a multi-way valve sealed filter structure and a filter. Background Art

[0002] As an important pollutant control device, the filter structure has been widely used in the industrial field, especially in the fresh air system of workshop production; its main function is to separate impurities in the mixed gas to ensure that the air quality entering the workshop meets the production and environmental requirements. Conventional filter structures are usually composed of multi-stage filter units, each stage is used to treat different types of pollutants, such as filters for particulate removal, activated carbon adsorbents for volatile organic compounds (VOCs), and chemical catalysts for purifying acidic or toxic gases.

[0003] However, in industrial parks, due to the diverse types of enterprises and complex production processes in the park, the composition of exhaust gas is often diverse and complex. When introducing outside air, the fresh air system faces the challenge of dealing with multiple pollutants at the same time, which causes the conventional filtration structure to expose obvious limitations in this scenario. First of all, conventional filtration structures usually adopt a linear stacking design, and different filter units are arranged in series. Although this design achieves multi-stage filtration, the gas flow path is too long, resulting in a significant increase in fluid resistance, which limits the filtration efficiency. In addition, the linear stacking method results in a large volume, which affects the utilization of workshop space, especially in the case of compact workshop layout and limited equipment installation space in industrial parks. The deployment of such a large-volume filtration structure is more difficult.

[0004] In summary, conventional filtration structures are large in size and have low filtration efficiency, making it difficult to meet the needs of fresh air systems in complex environments of industrial parks. Summary of the invention

[0005] The object of the present invention is to provide a multi-way valve sealed filter structure and a filter, so as to solve the problem that the filter structure in the prior art has a large volume and low filtering efficiency.

[0006] To achieve this object, the present invention adopts the following technical solutions: A multi-way valve sealed filter structure comprises a first filter assembly, a second filter assembly and a third filter assembly which are sequentially connected along a first direction; The first filter assembly includes an inlet channel, a first channel and a waste discharge channel. The inlet channel is used to introduce fresh air and is connected to the first channel and the waste discharge channel respectively. The first channel and the waste discharge channel are separated by a first filter unit, and the first filter unit is used to separate large particles. The inlet channel is inclined relative to the first direction and is higher than the first channel. The second filter assembly is in communication with the first channel and is used to recover volatile organic compounds; The third filter assembly includes a second channel, a discharge channel and a sedimentation channel, the second channel is connected to the outlet of the second filter assembly, and is respectively connected to the discharge channel and the sedimentation channel; the discharge channel and the sedimentation channel are separated by a third filter unit, and the third filter unit is used to pass oil droplets; the sedimentation channel is inclined relative to the first direction and is lower than the second channel.

[0007] Optionally, the second filter assembly comprises a filter housing, wherein an intermediate channel and a volatile organic compound recovery unit are provided in the filter housing, wherein the volatile organic compound recovery unit is used to recover volatile organic compounds, and the intermediate channel is connected between the first channel and the second channel; External threads are provided on the outer walls at both ends of the intermediate channel, the first channel and the second channel are provided with internal threads corresponding to the external threads respectively, the first channel is connected to the inlet thread of the intermediate channel through threads, and the second channel is connected to the outlet thread of the intermediate channel through threads; A positioning plate is also installed outside the filter housing, and a sealing assembly is installed on the positioning plate. The sealing assembly is used to seal the gap between the first channel and the inlet of the middle channel, and the gap between the second channel and the outlet of the middle channel.

[0008] Optionally, the sealing assembly comprises an inlet sealing ring sleeved outside the inlet of the intermediate channel and an outlet sealing ring sleeved outside the outlet of the intermediate channel; the inlet sealing ring and the outlet sealing ring are movably connected to the positioning plate via an elastic connecting rod respectively; When the first channel is connected to the inlet thread of the intermediate channel through the thread, the inlet sealing ring is subjected to the pressure of the first filter assembly, overcomes the elastic force of the elastic connecting rod, and moves in a direction close to the filter housing; When the second channel is threadedly connected to the outlet of the intermediate channel, the outlet sealing ring is subjected to the pressure of the third filter assembly, overcomes the elastic force of the elastic connecting rod, and moves in a direction close to the filter housing.

[0009] Optionally, a valve body assembly is respectively provided in the first channel and the second channel; A ball cavity is formed in the first channel and the second channel respectively, and the valve body assembly includes a ball and an opening and closing connecting rod correspondingly arranged in the ball cavity, the ball is provided with a conducting channel, one end of the opening and closing connecting rod extends into the ball cavity and is fixedly connected to the ball, and the other end of the opening and closing connecting rod extends outside the ball cavity.

[0010] Optionally, a first adjustment component and a second adjustment component are also installed on the positioning plate; The first adjustment component is used to adjust the adjustment angle of the opening and closing connecting rod corresponding to the first channel so that the first channel is in one of a fully open state, a half-open state and a fully closed state; The second adjustment component is used to adjust the adjustment angle of the opening and closing connecting rod corresponding to the second channel, so that the second channel is located in one of a fully open state, a half-open state and a fully closed state.

[0011] Optionally, a dual-axis motor is installed on the positioning plate; The first shaft of the dual-shaft motor drives the opening and closing connecting rod corresponding to the first channel to rotate through the first driving wheel, the first synchronous belt and the first driven wheel in the first adjustment assembly; The second shaft of the dual-shaft motor drives the opening and closing connecting rod corresponding to the second channel to rotate through the second driving wheel, the second synchronous belt and the second driven wheel in the second adjustment component.

[0012] Optionally, the opening and closing connecting rod corresponding to the first channel is located below the first filter assembly; and the opening and closing connecting rod corresponding to the second channel is located above the third filter assembly.

[0013] Optionally, the third filter assembly further includes a guide portion, which is disposed at the junction of the second channel and the discharge channel, extending from the upper wall surface of the second channel toward the sedimentation channel, and spaced apart from the lower wall surface of the second channel.

[0014] Optionally, the first filter unit comprises a large particle filter, and the third filter unit comprises a polydimethylsiloxane membrane.

[0015] A filter comprises a fan and the multi-way valve sealed filter structure as described above.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The multi-way valve sealed filter structure and filter provided by the present invention, when working, when the fresh air tilts into the first filter component from the inlet channel, the gravity and airflow inertia are used to ensure that larger particles are effectively separated at the first filter unit and discharged through the waste discharge channel; then, the fresh air processed by the first filter component flows into the second filter component to recover volatile organic compounds, and the second filter component is directly connected to the front and rear filter components, avoiding the problem of too long airflow path, thereby reducing fluid resistance and improving filtering efficiency; then, through the inclined arrangement of the sedimentation channel and its structural design lower than the second channel, gravity and diversion are further used to make the oil droplets pass through the third filter unit along the sedimentation channel. Efficient separation and discharge, while ensuring that the remaining fresh air can be smoothly discharged through the second channel; the above-mentioned arrangement reduces the volume of the filter and significantly improves the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0019] Figure 1 A first overall structural schematic diagram of a multi-way valve sealed filter structure provided in an embodiment of the present invention; Figure 2 A second overall structural schematic diagram of a multi-way valve sealed filter structure provided in an embodiment of the present invention; Figure 3 A schematic diagram of a top view of a multi-way valve sealed filter structure provided in an embodiment of the present invention; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along AA; Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at B; Figure 6 for Figure 4 A schematic diagram of the local enlarged structure at C; Illustration: 100, first filter assembly; 110, inlet channel; 120, first channel; 130, waste discharge channel; 140, first filter unit; 200, second filter assembly; 210, filter housing; 220, middle channel; 230, positioning plate; 300, third filter assembly; 310, second channel; 320, discharge channel; 330, sedimentation channel; 340, third filter unit; 350, flow guide; 400, sealing assembly; 410, inlet sealing ring; 420, outlet sealing ring; 430, elastic connecting rod; 500, valve body assembly; 501, ball cavity; 510, ball; 511, conduction channel; 520, opening and closing connecting rod; 610, first adjustment component; 611, first driving wheel; 612, first driven wheel; 613, first synchronous belt; 620, second adjustment component; 621, second driving wheel; 622, second driven wheel; 623, second synchronous belt; 630, dual-axis motor. DETAILED DESCRIPTION

[0020] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0022] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0023] Embodiment 1: The multi-way valve sealed filter structure provided in this embodiment is suitable for fresh air systems, especially for fresh air systems in complex environments of industrial parks. This embodiment reduces the volume and improves the filtering efficiency by improving the filter structure and introducing multi-way valves, seals, etc.

[0024] like Figures 1 to 4 As shown, the multi-way valve sealed filter structure in this embodiment includes a first filter assembly 100, a second filter assembly 200 and a third filter assembly 300 which are sequentially connected along a first direction; like Figure 4 and Figure 5 As shown, the first filter assembly 100 includes an inlet channel 110, a first channel 120 and a waste discharge channel 130. The inlet channel 110 is used to introduce fresh air and is connected to the first channel 120 and the waste discharge channel 130 respectively. The first channel 120 and the waste discharge channel 130 are separated by a first filter unit 140, and the first filter unit 140 is used to separate large particles. The inlet channel 110 is inclined relative to the first direction and is higher than the first channel 120. The first filter assembly 100 is mainly used for preliminary treatment of the introduced fresh air. It guides the gas to flow in through the inlet channel 110, and uses the first filter unit 140 to separate larger particles. At the same time, through the combination of the inclined design and the waste discharge channel 130, large particles can be efficiently separated and discharged, ensuring the operation efficiency of the subsequent filter assembly.

[0025] like Figure 4 and Figure 6 As shown, the third filter assembly 300 includes a second channel 310, a discharge channel 320 and a sedimentation channel 330. The second channel 310 is connected to the outlet of the second filter assembly 200, and is respectively connected to the discharge channel 320 and the sedimentation channel 330; the discharge channel 320 and the sedimentation channel 330 are separated by a third filter unit 340, and the third filter unit 340 is used to pass oil droplets; the sedimentation channel 330 is inclined relative to the first direction and is lower than the second channel 310; the second filter assembly 200 is connected to the first channel 120 for recovering volatile organic compounds. The second filter assembly 200 is used to recover volatile organic compounds VOCs, and can effectively adsorb and treat harmful components in the gas, providing a cleaner airflow for the subsequent stage, wherein the gas treatment method of the second filter assembly 200 is well known to those skilled in the art, and will not be specifically expanded in this embodiment. The third filter component 300 includes a second channel 310, an exhaust channel 320 and a sedimentation channel 330. Through the coordinated design of the third filter unit 340, oil droplets, aerosols and other substances can be successfully separated and discharged along the sedimentation channel 330, while the remaining gas flows out of the entire system through the exhaust channel 320, completing the purification of the fresh air.

[0026] Specifically, when the multi-way valve sealed filter structure is working, when the fresh air tilts from the inlet channel 110 into the first filter component 100, gravity and airflow inertia are used to ensure that larger particles are effectively separated at the first filter unit 140 and discharged through the exhaust channel 130; then, the fresh air processed by the first filter component 100 flows into the second filter component 200 to recover volatile organic compounds. The second filter component 200 is directly connected to the front and rear filter components, avoiding the problem of too long airflow path, thereby reducing fluid resistance and improving filtration efficiency; then, through the inclined arrangement of the sedimentation channel 330 and its structural design lower than the second channel 310, gravity and diversion are further used to make the oil droplets pass through the third filter unit 340 along the sedimentation channel 330. Efficient separation and discharge, while ensuring that the remaining fresh air can be smoothly discharged through the second channel 310; the above-mentioned arrangement reduces the volume of the filter and significantly improves the filtration efficiency.

[0027] As a specific embodiment, the first filter unit 140 includes a large particle filter, and the third filter unit 340 includes a polydimethylsiloxane film. The first filter unit 140 is specially used to process large particles in the fresh air by setting a large particle filter. After the fresh air enters obliquely through the inlet channel 110, the particles are intercepted by the large particle filter and discharged through the exhaust channel 130 due to gravity and inertia, thereby ensuring the cleanliness of the air flow to the subsequent filter components and preventing large particles from clogging the subsequent system. The third filter unit 340 realizes efficient separation of oil droplets through the lipophilic properties of the polydimethylsiloxane film. The oil droplets in the second channel 310 are concentrated to the sedimentation channel 330 through the guiding effect of the guide part 350, while most of the other gases continue to be discharged from the exhaust channel 320 along the first direction.

[0028] More specifically, the inlet channel 110 and the first channel 120 are arranged at an obtuse angle, the first filter unit 140 is arranged at the corner between the inlet channel 110 and the first channel 120, and the exhaust channel 130 is arranged on one side of the first channel 120 in the opposite direction of the first direction; it can be understood that through the inclination angle of the inlet channel 110 combined with the inertial effect of gravity and airflow, large particles can be more efficiently settled along the flow path and intercepted by the first filter unit 140, thereby enhancing the particle separation effect. More specifically, the third filter assembly 300 also includes a guide portion 350, which is arranged at the intersection of the second channel 310 and the exhaust channel 320, extending from the upper wall of the second channel 310 toward the sedimentation channel 330, and spaced from the lower wall of the second channel 310; the sedimentation channel 330 and the second channel 310 are arranged at an obtuse angle, and the exhaust channel 320 is connected to the second channel 310 along a first direction, thereby guiding the guide portion 350 to effectively divert the airflow in the second channel 310, so that the oil droplets and aerosols contained therein are guided to the sedimentation channel 330. Due to the characteristics of the oil droplets, after encountering the guide portion 350, they are likely to form larger oil droplets on the guide portion 350 and flow from top to bottom to the third filter unit 340. In addition, the relative position arrangement of the guide portion 350 and the sedimentation channel 330 allows the separated airflow to pass smoothly through the exhaust channel 320 without being disturbed by the oil droplet sedimentation process, thereby improving the stability and efficiency of the entire filtration system, making full use of the momentum and gravity of the airflow, and achieving a compact system volume and improved filtration efficiency.

[0029] Further, the second filter assembly 200 includes a filter housing 210, in which an intermediate channel 220 and a volatile organic compound recovery unit are provided, and the volatile organic compound recovery unit is used to recover volatile organic compounds, and the intermediate channel 220 is connected between the first channel 120 and the second channel 310; the volatile organic compound recovery unit includes but is not limited to activated carbon, catalyst coating, etc., which is customized according to the environment of the industrial park, and is not specifically expanded in this embodiment. External threads are provided on the outer walls of both ends of the intermediate channel 220, and the first channel 120 and the second channel 310 are respectively provided with internal threads corresponding to the external threads. The first channel 120 is connected to the inlet thread of the intermediate channel 220 through the thread, and the second channel 310 is connected to the outlet thread of the intermediate channel 220 through the thread; a positioning plate 230 is also installed outside the filter housing 210, and a sealing assembly 400 is installed on the positioning plate 230, and the sealing assembly 400 is used to seal the gap between the first channel 120 and the inlet of the intermediate channel 220, and the gap between the second channel 310 and the outlet of the intermediate channel 220. It is understandable that by providing a matching design of external threads and internal threads, a stable and reliable threaded connection is achieved between the intermediate channel 220 and the first channel 120 and the second channel 310. This threaded connection method makes the assembly between components easier and can ensure that the sealing is maintained under high flow and high pressure conditions; in combination with the sealing component 400, the sealing of the multi-way valve sealed filter structure is further improved.

[0030] As a specific implementation method, Figures 2 to 4As shown, the sealing assembly 400 includes an inlet sealing ring 410 sleeved outside the inlet of the intermediate channel 220 and an outlet sealing ring 420 sleeved outside the outlet of the intermediate channel 220; the inlet sealing ring 410 and the outlet sealing ring 420 are respectively movably connected to the positioning plate 230 through an elastic connecting rod 430; when the first channel 120 is threadedly connected to the inlet thread of the intermediate channel 220, the inlet sealing ring 410 is subjected to the pressure of the first filter assembly 100, overcomes the elastic force of the elastic connecting rod 430, and moves in a direction close to the filter housing 210; when the second channel 310 is threadedly connected to the outlet thread of the intermediate channel 220, the outlet sealing ring 420 is subjected to the pressure of the third filter assembly 300, overcomes the elastic force of the elastic connecting rod 430, and moves in a direction close to the filter housing 210.

[0031] Specifically, when the first channel 120 is threadedly connected to the inlet of the middle channel 220, the inlet sealing ring 410 of the sealing assembly 400 can overcome the elastic force of the elastic connecting rod 430 under the pressure of the first filter assembly 100, ensuring that the gap at the inlet is completely sealed. Similarly, the connection between the second channel 310 and the middle channel 220 effectively prevents airflow leakage through the outlet sealing ring 420, ensuring the sealing between the second channel 310 and the middle channel 220. By utilizing the elastic potential energy of the elastic connecting rod 430, the sealing ring can be tightly fitted with the above-mentioned gap, avoiding the problem of airflow leakage caused by poor sealing of the connection parts in the traditional filtering system, and improving the sealing and stability of the filtering system.

[0032] On the basis of the above-mentioned embodiment, valve body assemblies 500 are respectively arranged in the first channel 120 and the second channel 310; ball cavities 501 are respectively formed in the first channel 120 and the second channel 310, and the valve body assembly 500 includes a sphere 510 and an opening and closing connecting rod 520 correspondingly arranged in the sphere cavity 501, the sphere 510 is provided with a conducting channel 511, one end of the opening and closing connecting rod 520 extends into the sphere cavity 501 and is fixedly connected to the sphere 510, and the other end of the opening and closing connecting rod 520 extends outside the sphere cavity 501. It can be understood that by adjusting the rotation angle of the other end of the opening and closing connecting rod 520, the ball 510 can be mobilized to rotate, thereby adjusting the conduction area of ​​the conduction channel 511 in the first channel 120, or adjusting the conduction area of ​​the conduction channel 511 in the second channel 310; for example, when the ball 510 is at the initial angle, the conduction channel 511 is completely opposite to the first channel 120 or the second channel 310 and is in a fully open state; when the ball 510 rotates 45°, only half of the conduction channel 511 is connected to the first channel 120 or the second channel 310 and is in a half-open state; when the ball 510 rotates 90°, the conduction channel 511 is completely staggered with the first channel 120 or the second channel 310 and is in a fully closed state.

[0033] Furthermore, if Figures 1 to 4 As shown, the positioning plate 230 is also equipped with a first adjustment component 610 and a second adjustment component 620; the first adjustment component 610 is used to adjust the adjustment angle of the opening and closing connecting rod 520 corresponding to the first channel 120, so that the first channel 120 is in one of the fully open state, the half-open state and the fully closed state; the second adjustment component 620 is used to adjust the adjustment angle of the opening and closing connecting rod 520 corresponding to the second channel 310, so that the second channel 310 is in one of the fully open state, the half-open state and the fully closed state. It can be understood that through the arrangement of the above-mentioned adjustment components, the multi-way valve sealed filter structure can be matched with different scene requirements.

[0034] Furthermore, a dual-axis motor 630 is installed on the positioning plate 230; the first axis of the dual-axis motor 630 drives the opening and closing connecting rod 520 corresponding to the first channel 120 to rotate through the first driving wheel 611, the first synchronous belt 613 and the first driven wheel 612 in the first adjustment component 610; the second axis of the dual-axis motor 630 drives the opening and closing connecting rod 520 corresponding to the second channel 310 to rotate through the second driving wheel 621, the second synchronous belt 623 and the second driven wheel 622 in the second adjustment component 620. Through the above arrangement, the above two valve body assemblies 500 can be adjusted synchronously, and the overall structure is made more compact.

[0035] Exemplarily, the sphere 510 in the first channel 120 and the sphere 510 in the second channel 310 can be staggered by 45°; thereby, when the first channel 120 is in a fully open state, the second channel 310 is in a half-open state; when the first channel 120 is in a half-open state, the second channel 310 is in a fully open state.

[0036] Specifically, in the first case where the concentration of particulate matter in the fresh air is high and contains a certain amount of volatile organic compounds (i.e., the concentration of oily aerosol is low), the first channel 120 is adjusted to a fully open state, while the second channel 310 is adjusted to a half-open state. In the second case where the concentration of oily aerosol in the fresh air is high and contains a certain amount of volatile organic compounds (i.e., the concentration of particulate matter is low), the first channel 120 is adjusted to a half-open state, while the second channel 310 is adjusted to a fully open state. In the first case, the flow rate of the airflow through the first filter assembly 100 can be maximized through the fully open first channel 120, ensuring that larger particulate matter is effectively separated and maintaining the efficient operation of the system in an environment with high particulate matter concentration. At the same time, the half-open state of the second channel 310 allows part of the airflow to enter the subsequent second filter assembly 200 for recovering volatile organic compounds, but it limits the flow rate, thereby reducing the distribution ratio of the oily aerosol on the oil droplet settling path. In the second case, by adjusting the first channel 120 to a half-open state, the airflow ratio passing through the primary filter assembly is effectively reduced, avoiding the waste of large particle separation efficiency due to excessive airflow. The design of the second channel 310 in a fully open state allows more airflow to pass through the oil aerosol processing channel, ensuring that oil droplets and aerosols can be fully separated and settled at the third filter unit 340, thereby improving the processing efficiency of high-concentration oil aerosols.

[0037] As other optional embodiments, other arrangements may be selected, for example, the sphere 510 in the first channel 120 and the sphere 510 in the second channel 310 are kept synchronous, thereby achieving simultaneous opening or closing of the first channel 120 and the second channel 310, which has the advantages of compact structure and simple control.

[0038] On the basis of the above embodiment, the opening and closing connecting rod 520 corresponding to the first channel 120 is located below the first filter assembly 100; the opening and closing connecting rod 520 corresponding to the second channel 310 is located above the third filter assembly 300. The above arrangement, combined with the layout of the dual-axis motor 630, the first adjustment assembly 610 and the second adjustment assembly 620, makes the overall structure more compact, and for the overall multi-way valve sealed filter structure, makes the center of gravity of the multi-way valve sealed filter structure closer to the center, which helps to improve the structural stability, thereby increasing the service life of the multi-way valve sealed filter structure.

[0039] Embodiment 2: This embodiment further provides a filter, including a fan and the multi-way valve sealed filter structure in the first embodiment, wherein the fan is used to introduce fresh air from the outside into the inlet channel 110 .

[0040] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-way valve sealed filter structure, characterized in that: It includes a first filter assembly, a second filter assembly and a third filter assembly which are sequentially connected along a first direction; The first filter assembly includes an inlet channel, a first channel and a waste discharge channel. The inlet channel is used to introduce fresh air and is connected to the first channel and the waste discharge channel respectively. The first channel and the waste discharge channel are separated by a first filter unit, and the first filter unit is used to separate large particles. The inlet channel is inclined relative to the first direction and is higher than the first channel. The second filter assembly is in communication with the first channel and is used to recover volatile organic compounds; The third filter assembly includes a second channel, a discharge channel and a sedimentation channel, the second channel is connected to the outlet of the second filter assembly, and is respectively connected to the discharge channel and the sedimentation channel; the discharge channel and the sedimentation channel are separated by a third filter unit, and the third filter unit is used to pass oil droplets; the sedimentation channel is inclined relative to the first direction and is lower than the second channel.

2. A multi-way valve sealed filter structure according to claim 1, characterized in that: The second filter assembly comprises a filter housing, wherein an intermediate channel and a volatile organic compound recovery unit are provided in the filter housing, wherein the volatile organic compound recovery unit is used to recover volatile organic compounds, and the intermediate channel is connected between the first channel and the second channel; External threads are provided on the outer walls at both ends of the intermediate channel, the first channel and the second channel are provided with internal threads corresponding to the external threads respectively, the first channel is connected to the inlet thread of the intermediate channel through threads, and the second channel is connected to the outlet thread of the intermediate channel through threads; A positioning plate is also installed outside the filter housing, and a sealing assembly is installed on the positioning plate. The sealing assembly is used to seal the gap between the first channel and the inlet of the middle channel, and the gap between the second channel and the outlet of the middle channel.

3. A multi-way valve sealed filter structure according to claim 2, characterized in that: The sealing assembly comprises an inlet sealing ring sleeved outside the inlet of the intermediate channel and an outlet sealing ring sleeved outside the outlet of the intermediate channel; the inlet sealing ring and the outlet sealing ring are movably connected to the positioning plate through an elastic connecting rod respectively; When the first channel is connected to the inlet thread of the intermediate channel through the thread, the inlet sealing ring is subjected to the pressure of the first filter assembly, overcomes the elastic force of the elastic connecting rod, and moves in a direction close to the filter housing; When the second channel is threadedly connected to the outlet of the intermediate channel, the outlet sealing ring is subjected to the pressure of the third filter assembly, overcomes the elastic force of the elastic connecting rod, and moves in a direction close to the filter housing.

4. A multi-way valve sealed filter structure according to claim 2, characterized in that: The first channel and the second channel are respectively provided with valve body assemblies; A ball cavity is formed in the first channel and the second channel respectively, and the valve body assembly includes a ball and an opening and closing connecting rod correspondingly arranged in the ball cavity, the ball is provided with a conducting channel, one end of the opening and closing connecting rod extends into the ball cavity and is fixedly connected to the ball, and the other end of the opening and closing connecting rod extends outside the ball cavity.

5. A multi-way valve sealed filter structure according to claim 4, characterized in that: The positioning plate is also equipped with a first adjustment component and a second adjustment component; The first adjustment component is used to adjust the adjustment angle of the opening and closing connecting rod corresponding to the first channel so that the first channel is in one of a fully open state, a half-open state and a fully closed state; The second adjustment component is used to adjust the adjustment angle of the opening and closing connecting rod corresponding to the second channel, so that the second channel is located in one of a fully open state, a half-open state and a fully closed state.

6. A multi-way valve sealed filter structure according to claim 5, characterized in that: A dual-axis motor is installed on the positioning plate; The first shaft of the dual-shaft motor drives the opening and closing connecting rod corresponding to the first channel to rotate through the first driving wheel, the first synchronous belt and the first driven wheel in the first adjustment assembly; The second shaft of the dual-shaft motor drives the opening and closing connecting rod corresponding to the second channel to rotate through the second driving wheel, the second synchronous belt and the second driven wheel in the second adjustment component.

7. The multi-way valve sealed filter structure according to claim 5, characterized in that: The opening and closing connecting rod corresponding to the first channel is located below the first filter assembly; the opening and closing connecting rod corresponding to the second channel is located above the third filter assembly.

8. The multi-way valve sealed filter structure according to claim 2, characterized in that: The third filter assembly further includes a guide portion, which is disposed at the junction of the second channel and the discharge channel, extending from the upper wall surface of the second channel toward the sedimentation channel, and spaced apart from the lower wall surface of the second channel.

9. A multi-way valve sealed filter structure according to any one of claims 1 to 8, characterized in that: The first filter unit includes a large particle filter, and the third filter unit includes a polydimethylsiloxane membrane.

10. A filter, characterized in that: The invention comprises a fan and a multi-way valve sealed filtering structure as claimed in any one of claims 1 to 9.

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