Filter frame for air filter

Abstract

The utility model discloses a filter frame for an air filter, which comprises a frame body and a filter screen fixed on the frame body, and the filter screen comprises a rough filter layer, a middle filter layer and a fine filter layer which are arranged in sequence; the rough filtering layer is a stainless steel wire net; the middle filter layer is a glass fiber layer, the fine filter layer is a composite layer, and the composite layer is formed by weaving activated carbon fibers and nanofibers; the two sides of the frame body are detachably connected with supporting frames, the supporting frames are arranged to be plastic grids, the plastic grids are detachably connected with the frame body, and the filter screen is placed between the two plastic grids; a self-cleaning mechanism is also arranged on the filter frame and is used for cleaning impurities on the filter screen. The filter frame can filter out particles with different sizes, the coarse filter layer adopts a stainless steel wire mesh, and layer-by-layer filtration is adopted in the structure, so that the service life of the fine filter layer can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter device technical field, concretely for a kind of filter frame for air filter. BACKGROUND

[0002] In factory, especially in some factories with more dust, dust in the environment poses a threat to the health and safety of workers. Currently, the existing filter screen on the market, such as the filter screen in the air purifier, has the problems of limited filtering efficiency, easy blockage and inconvenient disassembly and cleaning. After a period of use, impurities accumulate on the filter screen, causing large filtering resistance and poor airflow circulation, resulting in poor filtering effect. Some traditional filter screens can preliminarily filter larger particles, but the filtering effect of small particles is poor. After a long time of use, the filter frame needs to be replaced as a whole due to severe blockage, greatly reducing the service life of the filter frame. SUMMARY

[0003] The utility model aims at the defects and deficiencies of the prior art, and provides a filter frame for air filter to solve the problems raised in the background.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of: a filter frame for air filter, comprising a frame body and a filter screen fixed on the frame body, the filter screen comprises a coarse filter layer, a medium filter layer and a fine filter layer arranged in sequence; the coarse filter layer is set as a stainless steel mesh; the medium filter layer is set as a glass fiber layer, and the fine filter layer is set as a composite layer, which is woven from activated carbon fiber and nanofiber; support frames are detachably connected to both sides of the frame body, the support frames are set as plastic meshes, and the plastic meshes and the frame body are connected in a detachable manner, the filter screen is placed between the two plastic meshes; a self-cleaning mechanism is further provided on the filter frame, which is used for cleaning impurities on the filter screen.

[0005] Further, the pore size of the coarse filter layer is larger than that of the medium filter layer, and the pore size of the medium filter layer is larger than that of the fine filter layer.

[0006] Further, the self-cleaning mechanism is set as a micro-vibration motor, which drives the filter screen to vibrate for cleaning.

[0007] Preferably, an air flow sensor is installed on the filter frame, which is used for detecting the air flow through the filter frame.

[0008] Preferably, an impurity collection structure is provided below the filter screen.

[0009] Preferably, the impurity collection structure is arranged as a detachable collection bag.

[0010] Preferably, the micro-vibration motor is controlled by a controller of the air filter.

[0011] Preferably, the air filter is provided with a self-cleaning button connected to the controller.

[0012] Preferably, the input end of the controller is further connected with an air flow sensor.

[0013] Further, the surface of the filter screen is provided with a nano coating.

[0014] With the above structure, the filter frame of the present application can filter out particles of different sizes, the coarse filter layer adopts stainless steel mesh and can be used for a long time, and the present structure adopts layer-by-layer filtering, which helps to prolong the service life of the fine filter layer. Meanwhile, the material grid and the frame body are connected in a detachable manner in the present application, which facilitates the disassembly and cleaning of the filter screen, and the installation and disassembly are convenient. In the present application, a self-cleaning mechanism is also adopted, which can clean the filter screen regularly, remove the impurities accumulated on the filter screen, reduce the disassembly frequency, and can self-clean to reduce the accumulation of impurities, smooth airflow, and good use effect. With these structures, the filter frame does not need to be replaced frequently, and the service life is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the present application.

[0016] Figure 2 is an electrical relationship diagram of the present application.

[0017] Marked: 1, frame; 2, coarse filter layer; 3, middle filter layer; 4, fine filter layer; 5, plastic grid; 6, micro-vibration motor; 7, air flow sensor; 8, self-cleaning button; 9, controller of air filter; 10, impurity collection structure. DETAILED DESCRIPTION

[0018] The present application will be further described below with reference to the drawings.

[0019] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0020] Please refer to Figure 1 and Figure 2The utility model provides a technical scheme: a filter frame for air filter, including frame body 1 and fixed filter screen on frame body 1, the filter screen includes the coarse filter layer 2, the middle filter layer 3, fine filter layer 4 that set gradually, the coarse filter layer 2 is set to stainless steel wire net, the middle filter layer 3 is set to glass fibre layer, fine filter layer 4 is set to composite layer, the composite layer adopts active carbon fibre and nanometer fibre and is woven, the both sides detachable connection of frame body 1 has support frame, the support frame is set to plastic grid 5, plastic grid 5 and frame body 1 between adopt detachable connection mode and connect, the filter screen is placed between two plastic grid 5, still be provided with a self cleaning mechanism on the filter frame, and the self cleaning mechanism is used for cleaning the impurity on the filter screen, the filter frame of the utility model, including coarse filter layer 2, middle filter layer 3, fine filter layer 4 can filter out the particle of different size, coarse filter layer 2 adopts stainless steel wire net, can use for a long time, and the structure in this adopts layer by layer filtering, helps to prolong the service life of fine filter layer 4, simultaneously, the plastic grid of the utility model and frame body 1 between adopt detachable connection mode and connect, and the filter screen is convenient to detach and clean, and installation and detachment are convenient, in the utility model still adopts self cleaning mechanism, and the self cleaning mechanism can clean the filter screen regularly, can remove the impurity accumulated on the filter screen, reduces the number of detachment, can reduce the accumulated impurity by self cleaning, airflow is smooth, and the use effect is good, adopts these structures, does not need to frequently replace filter frame, improves the service life.

[0021] In further embodiments of the utility model, the pore size of the coarse filter layer 2 is greater than that of the middle filter layer 3, and the pore size of the middle filter layer 3 is greater than that of the fine filter layer 4. The filter screens with different pore sizes filter, improving the efficiency of filtering.

[0022] In further embodiments of the utility model, the self cleaning mechanism is a micro vibration motor 6. The micro vibration motor 6 drives the filter screen to vibrate for cleaning. The micro vibration motor 6 vibrates, which can drive the filter screen to vibrate slightly, so that some impurities attached to the filter screen fall off. As an optional way, a gas jet nozzle can be added to the filter screen in the utility model. The gas jet nozzle is connected to a cleaning gas. The cleaning gas can be an external air source. This structure can further clean the filter screen. One or more micro vibration motors 6 can be selected. When one is selected, it can be installed on the frame body 1. Multiple micro vibration motors 6 can also be used and installed on the coarse filter layer 2, the middle filter layer 3, and the fine filter layer 4 respectively.

[0023] Preferably, the filter frame is provided with an air flow sensor 7, which can be installed between the medium filter layer 3 and the fine filter layer 4 or outside the fine filter layer 4. The air flow sensor 7 is used to detect the air flow through the filter frame. The air flow is detected by the air flow sensor 7, and when the air flow is lower than a threshold value, the self-cleaning mechanism is started to realize the function of automatic cleaning.

[0024] Preferably, the filter screen is provided with a dirt collection structure 10 below. The dirt collection structure 10 can be used to clean the dirt. Preferably, the dirt collection structure 10 is provided as a detachable collection bag. The detachable collection bag can be replaced regularly to avoid breeding bacteria in the air filter for a long time.

[0025] Preferably, the micro-vibration motor 6 is controlled by the air filter controller 9. In the present application, the air filter controller 9 is used, and no other controller is needed.

[0026] Preferably, the air filter is provided with a self-cleaning button 8, and the self-cleaning button 8 is connected to the controller. By providing the self-cleaning button 8, the cleaning can be realized by button operation, and the use is more convenient.

[0027] Preferably, the input end of the controller is further connected with the air flow sensor 7.

[0028] In further embodiments of the present application, the surface of the filter screen is provided with a nano coating. By providing the nano coating, the self-cleaning ability and the anti-pollution ability of the filter screen can be improved, and the service life is improved.

[0029] The above is only used to explain the technical scheme of the present application, not to limit it. Other modifications or equivalent replacements of the technical scheme of the present application made by those skilled in the art should be covered in the scope of the claims of the present application, as long as they do not deviate from the spirit and scope of the technical scheme of the present application.

Claims

1. A filter frame for an air filter, comprising a frame body and a filter screen fixed to the frame body, characterized in that, The filter screen comprises a coarse filter layer, a medium filter layer and a fine filter layer arranged in sequence; the coarse filter layer is arranged as a stainless steel screen; the medium filter layer is arranged as a glass fiber layer; the fine filter layer is arranged as a composite layer which is woven by activated carbon fiber and nanofiber; the frame body is detachably connected with support frames on both sides; the support frames are arranged as plastic grids; the plastic grids are detachably connected with the frame body; the filter screen is arranged between the two plastic grids; a self-cleaning mechanism is further arranged on the filter frame and used for cleaning impurities on the filter screen.

2. A filter frame for an air filter according to claim 1, wherein, The pore size of the coarse filter layer is larger than that of the medium filter layer, and the pore size of the medium filter layer is larger than that of the fine filter layer.

3. A filter frame for an air filter according to claim 1, wherein, The self-cleaning mechanism is arranged as a micro vibration motor which drives the filter screen to vibrate for cleaning.

4. A filter frame for an air filter according to claim 3, wherein, An air flow sensor is arranged on the filter frame and used for detecting the air flow passing through the filter frame.

5. A filter frame for an air filter according to claim 3, wherein, An impurity collecting structure is arranged below the filter screen.

6. A filter frame for an air filter according to claim 5, wherein, The impurity collecting structure is arranged as a detachable collecting bag.

7. A filter frame for an air filter according to claim 3, wherein, The micro vibration motor is controlled by a controller of the air filter.

8. A filter frame for an air filter according to claim 7, wherein, A self-cleaning button is arranged on the air filter and connected with the controller.

9. A filter frame for an air filter according to claim 8, wherein, The input end of the controller is further connected with the air flow sensor.

10. The filter frame for an air filter of claim 1, wherein, A nanometer coating is arranged on the surface of the filter screen.

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