Multi-way valve sealed filter structure and filter

Abstract

The application discloses a multi-way valve sealed filter structure and a filter. The filter specifically comprises a first filter assembly, a second filter assembly and a third filter assembly which are sequentially communicated along a first direction. The first filter assembly comprises an inlet channel, a first channel and a waste discharge channel. The inlet channel is communicated with the first channel and the waste discharge channel respectively. The first channel and the waste discharge channel are separated by a first filter unit. The inlet channel is arranged obliquely relative to the first direction and is higher than the first channel. The second filter assembly is communicated with the first channel. The third filter assembly comprises a second channel, a discharge channel and a sedimentation channel. The second channel is communicated with an outlet of the second filter assembly and is communicated with the discharge channel and the sedimentation channel respectively. The discharge channel and the sedimentation channel are separated by a third filter unit. The sedimentation channel is arranged obliquely relative to the first direction and is lower than the second channel. The above arrangement reduces the volume of the filter and significantly improves the filtering efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filtering structure, and in particular to a multi-way valve sealed filtering structure and filter. BACKGROUND

[0002] As an important pollution control device, filtering structure has been widely used in industrial fields, especially in the fresh air system of workshops. Its main function is to separate impurities in mixed gas to ensure that the air entering the workshop meets the production and environmental requirements. The conventional filtering structure is usually composed of multiple filtering units, each of which is used to treat different types of pollutants. For example, filter screens are used to remove particulate matter, activated carbon adsorbents are used to treat volatile organic compounds (VOCs), and chemical catalysts are used to purify acidic or toxic gases.

[0003] However, in an industrial park, due to the diversity of enterprise types and the complexity of production processes, the composition of waste gas is often diverse and complex. When the fresh air system introduces external air, it faces the challenge of needing to treat multiple pollutants at the same time, which leads to the obvious limitations of conventional filtering structures in this scenario. First, the conventional filtering structure usually adopts a linear stacking design, and different filtering 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 design results in a large volume, which affects the space utilization rate of the workshop, especially in the case of compact workshop layout and limited equipment installation space in industrial parks, it is more difficult to deploy such a large volume of filtering structure.

[0004] In summary, the conventional filtering structure has a large volume and low filtration efficiency, which makes it difficult to meet the needs of the fresh air system in the complex environment of an industrial park. SUMMARY

[0005] The purpose of the present application is to provide a multi-way valve sealed filtering structure and filter, which solves the problem of large volume and low filtration efficiency of the filtering structure in the prior art.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] A multi-way valve sealed filtering structure, comprising a first filtering assembly, a second filtering assembly and a third filtering assembly connected in sequence along a first direction;

[0008] The first filtering assembly comprises an inlet channel, a first channel and a waste channel, the inlet channel is used for introducing fresh air and is communicated with the first channel and the waste channel respectively, the first channel and the waste channel are separated by a first filtering unit, and the first filtering unit is used for separating large particles; the inlet channel is arranged obliquely relative to the first direction and is higher than the first channel;

[0009] The second filtering assembly is communicated with the first channel and is used for recovering volatile organic compounds;

[0010] The third filtering assembly comprises a second channel, an outlet channel and a sedimentation channel, the second channel is communicated with an outlet of the second filtering assembly and is communicated with the outlet channel and the sedimentation channel respectively; the outlet channel and the sedimentation channel are separated by a third filtering unit, and the third filtering unit is used for passing oil droplets; the sedimentation channel is arranged obliquely relative to the first direction and is lower than the second channel.

[0011] Optionally, the second filtering assembly comprises a filtering shell, an intermediate channel and a volatile organic compound recovery unit are arranged in the filtering shell, the volatile organic compound recovery unit is used for recovering volatile organic compounds, and the intermediate channel is communicated between the first channel and the second channel;

[0012] Outer threads are arranged on both ends of the outer wall of the intermediate channel, inner threads are arranged on the first channel and the second channel correspondingly to the outer threads, the first channel is threadedly connected with the inlet of the intermediate channel, and the second channel is threadedly connected with the outlet of the intermediate channel;

[0013] A positioning plate is further arranged outside the filtering shell, a sealing assembly is arranged on the positioning plate, and the sealing assembly is used for sealing gaps between the first channel and the inlet of the intermediate channel and between the second channel and the outlet of the intermediate channel.

[0014] 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 with the positioning plate through an elastic connecting rod respectively;

[0015] When the first channel is threadedly connected with the inlet of the intermediate channel, the inlet sealing ring is pressed by the first filtering assembly, overcomes the elastic force of the elastic connecting rod and moves in the direction close to the filtering shell;

[0016] When the second channel is connected with the outlet of the intermediate channel through threads, the outlet sealing ring is pressed by the pressure of the third filter assembly, and moves in the direction close to the filter housing, overcoming the elastic force of the elastic connecting rod.

[0017] Optionally, a valve body assembly is arranged in each of the first channel and the second channel.

[0018] A ball cavity is formed in each of the first channel and the second channel, and the valve body assembly comprises a ball body arranged in the ball cavity and an opening and closing connecting rod, the ball body is provided with a through channel, one end of the opening and closing connecting rod is arranged in the ball cavity and fixedly connected with the ball body, and the other end of the opening and closing connecting rod extends out of the ball cavity.

[0019] Optionally, a first adjusting assembly and a second adjusting assembly are further arranged on the positioning plate.

[0020] The first adjusting assembly is used for adjusting the adjusting 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.

[0021] The second adjusting assembly is used for adjusting the adjusting angle of the opening and closing connecting rod corresponding to the second channel, so that the second channel is in one of a fully open state, a half open state and a fully closed state.

[0022] Optionally, a double-shaft motor is arranged on the positioning plate.

[0023] The first shaft of the double-shaft motor drives the opening and closing connecting rod corresponding to the first channel to rotate through a first driving wheel, a first synchronous belt and a first driven wheel in the first adjusting assembly.

[0024] The second shaft of the double-shaft motor drives the opening and closing connecting rod corresponding to the second channel to rotate through a second driving wheel, a second synchronous belt and a second driven wheel in the second adjusting assembly.

[0025] Optionally, the opening and closing connecting rod corresponding to the first channel is arranged below the first filter assembly, and the opening and closing connecting rod corresponding to the second channel is arranged above the third filter assembly.

[0026] Optionally, the third filter assembly further comprises a flow guide part, the flow guide part is arranged at the joint of the second channel and the discharge channel, extends from the upper wall of the second channel towards the sedimentation channel, and is arranged in a spaced manner with the lower wall of the second channel.

[0027] Optionally, the first filter unit comprises a large-particle filter screen, and the third filter unit comprises a polydimethylsiloxane film.

[0028] A filter comprising a fan and a multi-way valve sealed filter structure as described above.

[0029] Compared with the prior art, the present application has the following beneficial effects:

[0030] The multi-way valve sealed filter structure and the filter provided by the present application have the following advantages: when the fresh air is obliquely introduced into the first filter assembly from the inlet channel, the gravity and the airflow inertia effect are utilized to ensure that the larger particulate matters are effectively separated at the first filter unit and discharged through the waste discharge channel; then, the fresh air treated by the first filter assembly flows into the second filter assembly to recover volatile organic compounds, the second filter assembly is directly communicated with the front and rear filter assemblies, thereby avoiding the problem of too long airflow path, reducing the fluid resistance and improving the filtering efficiency; subsequently, the oil droplets are effectively separated by the third filter unit along the sedimentation channel through the oblique arrangement of the sedimentation channel and the structural design of the sedimentation channel being lower than the second channel, and 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 DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor under the premise of these drawings.

[0032] The structures, proportions, sizes and the like shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, to enable those skilled in the art to understand and read, and are not used to limit the limiting conditions of the embodiments of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0033] Figure 1 The first overall structure schematic diagram of the multi-way valve sealed filter structure provided by the embodiments of the present application;

[0034] Figure 2 The second overall structure schematic diagram of the multi-way valve sealed filter structure provided by the embodiments of the present application;

[0035] Figure 3 The top view structure schematic diagram of the multi-way valve sealed filter structure provided by the embodiments of the present application;

[0036] Figure 4 The Figure 3A schematic diagram of the cross-sectional structure along point AA;

[0037] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point B;

[0038] Figure 6 for Figure 4 A magnified schematic diagram of the structure at point C;

[0039] Illustration: 100, First filter assembly; 110, Inlet channel; 120, First channel; 130, Waste discharge channel; 140, First filter unit;

[0040] 200. Second filter assembly; 210. Filter housing; 220. Intermediate channel; 230. Positioning plate;

[0041] 300. Third filter assembly; 310. Second channel; 320. Discharge channel; 330. Settling channel; 340. Third filter unit; 350. Flow guide section;

[0042] 400. Sealing assembly; 410. Inlet sealing ring; 420. Outlet sealing ring; 430. Flexible connecting rod;

[0043] 500, Valve body assembly; 501, Ball cavity; 510, Ball; 511, Conductive channel; 520, Opening / closing connecting rod;

[0044] 610. First adjustment component; 611. First drive pulley; 612. First driven pulley; 613. First timing belt; 620. Second adjustment component; 621. Second drive pulley; 622. Second driven pulley; 623. Second timing belt; 630. Dual-axis motor. Detailed Implementation

[0045] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0046] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component disposed therebetween.

[0047] The technical solutions of the present application will be further described below in conjunction with the drawings and through specific embodiments.

[0048] Embodiment one:

[0049] The multi-way valve sealed filter structure provided by the present embodiment is suitable for fresh air systems, especially for fresh air systems in complex environments in industrial parks. The present embodiment improves the filter structure by introducing a multi-way valve, a sealing element and the like, so that the volume is reduced and the filtering efficiency is improved.

[0050] As shown in Figures 1 to 4 , the multi-way valve sealed filter structure in the present embodiment includes a first filter assembly 100, a second filter assembly 200 and a third filter assembly 300 which are sequentially communicated along a first direction;

[0051] As shown in Figure 4 and Figure 5 , the first filter assembly 100 includes an inlet channel 110, a first channel 120 and a waste channel 130, the inlet channel 110 is used to introduce fresh air and is communicated with the first channel 120 and the waste channel 130 respectively, the first channel 120 and the waste channel 130 are separated by a first filter unit 140, the first filter unit 140 is used to separate large particles; the inlet channel 110 is inclinedly arranged relative to the first direction and is higher than the first channel 120. The first filter assembly 100 is mainly used for preliminary processing of the introduced fresh air, which guides the gas to flow in through the inlet channel 110 and separates the larger particles by using the first filter unit 140, and at the same time, through the combination of the inclined design and the waste channel 130, the large particle substances can be efficiently separated and discharged, ensuring the operation efficiency of the subsequent filter assembly.

[0052] As shown in Figure 4 and Figure 6As shown, the third filter assembly 300 includes a second channel 310, an exhaust channel 320 and a sedimentation channel 330, the second channel 310 is in communication with the outlet of the second filter assembly 200 and is in communication with the exhaust channel 320 and the sedimentation channel 330 respectively; the exhaust channel 320 and the sedimentation channel 330 are separated by a third filter unit 340 for passing oil droplets; the sedimentation channel 330 is arranged obliquely relative to the first direction and is lower than the second channel 310; the second filter assembly 200 is in communication with the first channel 120 for recovering volatile organic compounds. The second filter assembly 200 is used to recover volatile organic compounds VOCs, which can effectively adsorb and process harmful components in the gas to provide cleaner gas flow for the subsequent stage, wherein the method of processing gas of the second filter assembly 200 is well known to those skilled in the art and is not specifically expanded in this embodiment. The third filter assembly 300 includes the second channel 310, the exhaust channel 320 and the sedimentation channel 330, and the cooperation of the third filter unit 340 enables the oil droplets, aerosols and other substances to be smoothly 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 fresh air.

[0053] Specifically, during the operation of the multi-way valve sealed filter structure, the fresh air from the inlet channel 110 obliquely enters the first filter assembly 100, and the gravity and airflow inertia effect ensure that larger particulate matters are effectively separated at the first filter unit 140 and discharged through the exhaust channel 130; then, the fresh air treated by the first filter assembly 100 flows into the second filter assembly 200 to recover volatile organic compounds, the second filter assembly 200 is directly connected with the front and rear filter assemblies, avoiding the problem of too long gas flow path, thereby reducing the fluid resistance and improving the filtering efficiency; subsequently, the oblique arrangement of the sedimentation channel 330 and its lower structure design than the second channel 310 further utilize the gravity and flow guiding effect to make the oil droplets pass through the third filter unit 340 and be efficiently separated and discharged along the sedimentation channel 330, while ensuring that the remaining fresh air can smoothly pass through the second channel 310 and be discharged; the above arrangement reduces the volume of the filter and significantly improves the filtering efficiency.

[0054] As a specific embodiment, the first filtering unit 140 comprises a large-particle filter screen, and the third filtering unit 340 comprises a polydimethylsiloxane film. The first filtering unit 140 is specially used for processing large particles in the fresh air by setting a large-particle filter screen. After the fresh air enters obliquely through the inlet channel 110, the particles are intercepted by the large-particle filter screen and discharged through the waste discharge channel 130 by the action of gravity and inertial force, so as to ensure the cleanliness of the airflow flowing to the subsequent filtering assembly and avoid the blockage of the subsequent system by large particles. The third filtering unit 340 realizes efficient separation of oil droplets by the lipophilic property of the polydimethylsiloxane film. The oil droplets are guided by the guide part 350 to flow to the sedimentation channel 330, and other gases are mostly discharged from the discharge channel 320 in the first direction.

[0055] More specifically, the inlet channel 110 is arranged at an obtuse angle with the first channel 120, the first filtering unit 140 is arranged at the corner between the inlet channel 110 and the first channel 120, and the waste discharge 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, by the combination of the inclination angle of the inlet channel 110, gravity and the inertial effect of the airflow, the large particles can be more efficiently settled along the flow path and intercepted by the first filtering unit 140, thereby enhancing the particle separation effect.

[0056] More specifically, the third filtering assembly 300 further comprises a guide part 350 arranged at the junction of the second channel 310 and the discharge channel 320, extending from the upper wall of the second channel 310 towards the sedimentation channel 330 and arranged in a spaced manner with the lower wall of the second channel 310. The sedimentation channel 330 is arranged at an obtuse angle with the second channel 310, and the discharge channel 320 is communicated with the second channel 310 in the first direction. Thus, by the guidance of the guide part 350, the airflow in the second channel 310 can be effectively divided, and the oil droplets and aerosols contained therein are guided to the sedimentation channel 330. Due to the characteristics of the oil droplets, they are easy to form larger oil droplets on the guide part 350 and flow from top to bottom to the third filtering unit 340 after encountering the guide part 350. In addition, the relative position arrangement of the guide part 350 and the sedimentation channel 330 enables the separated airflow to smoothly pass through the discharge channel 320 without being disturbed by the oil droplet settling process, thereby improving the stability and efficiency of the entire filtering system, fully utilizing the momentum and gravity of the airflow, and realizing the compactness of the system volume and the improvement of the filtering efficiency.

[0057] Further, the second filter assembly 200 comprises a filter housing 210, in which an intermediate passage 220 and a volatile organic compound recovery unit for recovering volatile organic compounds are arranged, the intermediate passage 220 being communicated between the first passage 120 and the second passage 310; the volatile organic compound recovery unit comprises 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 the embodiment. External threads are arranged on the outer walls of both ends of the intermediate passage 220, and internal threads are arranged in the first passage 120 and the second passage 310 corresponding to the external threads, respectively; the first passage 120 is threadedly connected with the inlet thread of the intermediate passage 220, and the second passage 310 is threadedly connected with the outlet thread of the intermediate passage 220; the filter housing 210 is further provided with a positioning plate 230, and a sealing assembly 400 is arranged on the positioning plate 230, which is used to seal the gap between the first passage 120 and the inlet of the intermediate passage 220 and the gap between the second passage 310 and the outlet of the intermediate passage 220. It can be understood that, by the cooperation of the external threads and the internal threads, stable and reliable thread connection is realized between the intermediate passage 220 and the first passage 120 and the second passage 310. This thread connection mode makes the assembly between the components more convenient, and can ensure that the sealing property is maintained under high flow and high pressure conditions; in combination with the sealing assembly 400, the sealing property of the multi-way valve sealing type filter structure is further improved.

[0058] As a specific embodiment, as shown in Figures 2 to 4 The sealing assembly 400 comprises an inlet sealing ring 410 sleeved outside the inlet of the intermediate passage 220 and an outlet sealing ring 420 sleeved outside the outlet of the intermediate passage 220; the inlet sealing ring 410 and the outlet sealing ring 420 are movably connected with the positioning plate 230 through an elastic connecting rod 430; when the first passage 120 is threadedly connected with the inlet thread of the intermediate passage 220, the inlet sealing ring 410 is pressed by the first filter assembly 100, overcomes the elastic force of the elastic connecting rod 430, and moves in the direction close to the filter housing 210; when the second passage 310 is threadedly connected with the outlet thread of the intermediate passage 220, the outlet sealing ring 420 is pressed by the third filter assembly 300, overcomes the elastic force of the elastic connecting rod 430, and moves in the direction close to the filter housing 210.

[0059] Specifically, when the first channel 120 is threadedly connected to the inlet of the intermediate 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 intermediate channel 220 is effectively prevented from leaking air through the outlet sealing ring 420, ensuring the sealing performance between the second channel 310 and the intermediate channel 220. Utilizing the elastic potential energy of the elastic connecting rod 430, the sealing ring can be tightly fitted to the aforementioned gap, avoiding the air leakage problem caused by poor sealing at the connection points in traditional filtration systems, thus improving the sealing performance and stability of the filtration system.

[0060] Based on the above embodiments, valve body assemblies 500 are respectively provided 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. The valve body assembly 500 includes a ball 510 and an opening and closing connecting rod 520 correspondingly disposed in the ball cavity 501. The ball 510 has a conduction channel 511. One end of the opening and closing connecting rod 520 extends into the ball cavity 501 and is fixedly connected to the ball 510. The other end of the opening and closing connecting rod 520 extends to the outside of the ball cavity 501. It is understandable that by adjusting the rotation angle of the other end of the opening and closing connecting rod 520, the ball 510 can be rotated, 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 aligned with the first channel 120 or the second channel 310, and is in a fully open state; when the ball 510 rotates 45°, the conduction channel 511 is only half 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 offset from the first channel 120 or the second channel 310, and is in a fully closed state.

[0061] Furthermore, such as Figures 1 to 4 As shown, the positioning plate 230 is also equipped with a first adjusting component 610 and a second adjusting component 620. The first adjusting 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 following states: fully open, half open, and fully closed. The second adjusting 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 following states: fully open, half open, and fully closed. It can be understood that through the above-mentioned adjusting components, the multi-way valve sealed filter structure can be matched to different scenario requirements.

[0062] Further, the positioning plate 230 is provided with a double-shaft motor 630; the first shaft of the double-shaft motor 630 drives the corresponding opening and closing connecting rod 520 of 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 adjusting assembly 610; the second shaft of the double-shaft motor 630 drives the corresponding opening and closing connecting rod 520 of 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 adjusting assembly 620. Through the above arrangement, the two valve body assemblies 500 can be adjusted synchronously, and the overall structure is more compact.

[0063] For example, the ball 510 in the first channel 120 and the ball 510 in the second channel 310 can be arranged at an angle of 45°, so that when the first channel 120 is in the fully open state, the second channel 310 is in the half open state; and when the first channel 120 is in the half open state, the second channel 310 is in the fully open state.

[0064] Specifically, in the first case where the concentration of particulate matters in the fresh air is high and contains a certain amount of volatile organic compounds (i.e., the concentration of oily aerosols is low), the first channel 120 is adjusted to the fully open state, and the second channel 310 is adjusted to the half open state. In the second case where the concentration of oily aerosols in the fresh air is high and contains a certain amount of volatile organic compounds (i.e., the concentration of particulate matters is low), the first channel 120 is adjusted to the half open state, and the second channel 310 is adjusted to the fully open state. In the first case, by adjusting the first channel 120 to the fully open state, the flow rate of the airflow through the first filter assembly 100 can be maximized to ensure that large particulate matters are effectively separated and the system operates efficiently in an environment with high concentration of particulate matters. 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 the recovery of volatile organic compounds, but limits the flow rate, thereby reducing the proportion of oily aerosols distributed along the oil droplet settling path. In the second case, by adjusting the first channel 120 to the half open state, the proportion of the airflow passing through the primary filter assembly is effectively reduced, avoiding the waste of excessive airflow on the separation efficiency of large particulate matters. The design of the second channel 310 in the fully open state allows more airflow to pass through the processing channel of the oily aerosols, ensuring that the oil droplets and aerosols can be fully separated and settled at the third filter unit 340, thereby improving the processing efficiency of high-concentration oily aerosols.

[0065] As another optional embodiment, other arrangements can be selected, for example, the ball 510 in the first channel 120 and the ball 510 in the second channel 310 are kept synchronous, so that the first channel 120 and the second channel 310 are opened or closed at the same time, which has the advantages of compact structure and simple control.

[0066] On the basis of the above-mentioned embodiments, the open-close connecting rod 520 corresponding to the first channel 120 is located below the first filter assembly 100, and the open-close connecting rod 520 corresponding to the second channel 310 is located above the third filter assembly 300. The above-mentioned arrangement, in combination with the layout of the double-shaft motor 630, the first adjusting assembly 610 and the second adjusting 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 more tend to the center, and thus helps to improve the structural stability, thereby improving the service life of the multi-way valve sealed filter structure.

[0067] Embodiment two:

[0068] The embodiment also provides a filter, which comprises a fan and the multi-way valve sealed filter structure in embodiment one, and the fan is used to introduce fresh air from the outside into the inlet channel 110.

[0069] The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

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 that are sequentially connected along a first direction; The first filtration component includes an inlet channel, a first channel, and an exhaust channel. The inlet channel is used to introduce fresh air and is connected to both the first channel and the exhaust channel. The first channel and the exhaust channel are separated by a first filtration unit, which is used to separate large particles. The inlet channel is inclined relative to the first direction and is higher than the first channel. The third filtration component includes a second channel, a discharge channel, and a sedimentation channel; The second filter assembly is connected to the first channel and is used to recover volatile organic compounds (VOCs). The second filter assembly includes a filter housing, in which an intermediate channel and a VOC recovery unit are disposed. The VOC recovery unit is used to recover VOCs. The intermediate channel connects the first channel and the second channel. A positioning plate is also installed outside the filter housing. A sealing assembly is installed on the positioning plate. The sealing assembly includes an inlet sealing ring fitted outside the inlet of the intermediate channel and an outlet sealing ring fitted outside the outlet of the intermediate channel. The inlet sealing ring and the outlet sealing ring are respectively movably connected to the positioning plate through an elastic connecting rod. When the first channel is threadedly connected to the inlet of the intermediate channel, 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 closer 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 closer to the filter housing. The second channel is connected to the outlet of the second filter assembly and is also connected to the discharge channel and the settling channel respectively; the discharge channel and the settling channel are separated by a third filter unit, which is used to pass oil droplets; the settling channel is inclined relative to the first direction and is lower than the second channel; the third filter assembly further includes a guide portion, which is disposed at the junction of the second channel and the discharge channel, extends from the upper wall of the second channel toward the settling channel, and is spaced apart from the lower wall of the second channel; A ball cavity is formed in the first channel and the second channel respectively, and a valve body assembly is provided in the first channel and the second channel respectively; the valve body assembly includes a ball correspondingly disposed in the ball cavity and an angle-adjustable opening and closing connecting rod, the ball has a conduction 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 to the outside of the ball cavity.

2. The multi-way valve sealed filter structure according to claim 1, characterized in that, External threads are provided on the outer walls of both ends of the intermediate channel. The first channel and the second channel are respectively provided with internal threads corresponding to the external threads. The first channel is connected to the inlet thread of the intermediate channel through the thread, and the second channel is connected to the outlet thread of the intermediate channel through the thread.

3. The multi-way valve sealed filter structure according to claim 2, 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 the following states: fully open, half open, and fully closed. 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 in one of the following states: fully open, half open, and fully closed.

4. The multi-way valve sealed filter structure according to claim 3, characterized in that, A dual-axis motor is mounted on the positioning plate; The first shaft of the dual-axis motor drives the opening and closing connecting rod corresponding to the first channel to rotate via the first driving wheel, the first synchronous belt and the first driven wheel in the first adjustment assembly. The second shaft of the dual-axis motor drives the opening and closing connecting rod corresponding to the second channel to rotate via the second driving wheel, the second synchronous belt and the second driven wheel in the second adjustment assembly.

5. A multi-way valve sealed filter structure according to claim 3, 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.

6. A multi-way valve sealed filter structure according to any one of claims 1-5, characterized in that, The first filtration unit includes a large particle filter screen, and the third filtration unit includes a polydimethylsiloxane membrane.

7. A filter, characterized in that, Includes a fan and a multi-way valve sealed filter structure as described in any one of claims 1-6.

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