Multi-stage dust removal mechanism for fresh air handling unit

Abstract

The utility model relates to the technical field of dust removal of fresh air handling units, in particular to a multi-stage dust removal mechanism for a fresh air handling unit, and solves the problem that in the prior art, a multi-stage dust removal mechanism is inconvenient to detach from the interior of the fresh air handling unit, so that the cleaning efficiency is influenced. A multi-stage dust removal mechanism for a fresh air handling unit comprises a body and two ventilation pipelines, the interiors of the ventilation pipelines are slidably connected with inlet and outlet sleeves, the interiors of the inlet and outlet sleeves are fixedly connected with thick blocking nets, the interiors of the inlet and outlet sleeves are slidably connected with blocking plates, the surfaces of the blocking plates are provided with ventilation grooves, and the interiors of the ventilation grooves are provided with two L-shaped diversion grooves. A filter screen is fixedly connected to the surface of the barrier plate, a mounting mechanism is arranged between the barrier plate and the in-out sleeve, and a fixing mechanism is arranged between the in-out sleeve and the body. The multi-stage dust removal mechanism is convenient to disassemble and assemble without interfering use, so that the cleaning efficiency is improved, and the dust removal effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of dust removal technology for fresh air handling units, and in particular to a multi-stage dust removal mechanism for fresh air handling units. Background Technology

[0002] A fresh air handling unit is an electromechanical device that improves ventilation in enclosed spaces by filtering, regulating temperature and humidity, and recovering energy to deliver purified air into the room while expelling stale air. During operation, the unit first draws in fresh outdoor air via a fan. The air then undergoes a series of processes including dust removal, dehumidification (or humidification), and cooling (or heating) before being delivered back into the room by the fan, replacing the existing indoor air. This continuous supply of treated fresh air increases indoor oxygen levels and improves indoor air quality. By using filters of different levels, it effectively filters dust, pollen, and bacteria from the air. To remove pollutants and improve indoor air cleanliness, air handling units can be configured to cool, heat, dehumidify, or humidify the air according to the needs of the environment, maintaining indoor air within a comfortable temperature and humidity range. Some fresh air units are equipped with heat recovery sections, recovering heat from exhaust air to pre-cool or preheat fresh air, achieving energy recovery and utilization, and reducing energy consumption. Multi-stage dust removal is a method that comprehensively utilizes multiple dust removal technologies or equipment to gradually purify dust-laden gas through multiple stages to achieve efficient dust removal. Multi-stage dust removal typically combines equipment with different dust removal mechanisms, such as gravity settling, inertial separation, centrifugal separation, filtration, and electrostatics. In the first stage of dust removal, larger dust particles are initially separated by gravity or inertial force; then, smaller dust particles entering the next stage are further removed using centrifugal force, filter media, or electrostatic attraction. Through this gradual filtration and separation method, effective capture of dust particles of different sizes is achieved, improving dust removal efficiency.

[0003] In existing technologies, when using a fresh air handling unit, the unit introduces fresh outdoor air into the room while filtering out pollutants such as dust and particulate matter, ensuring that the indoor air remains consistently fresh.

[0004] However, after a period of use, the multi-stage dust removal mechanism needs to be cleaned. The existing multi-stage dust removal mechanism is not convenient to remove from the inside of the fresh air unit, which affects the efficiency of cleaning the multi-stage dust removal mechanism and thus easily affects the dust removal effect. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage dust removal mechanism for fresh air handling units, which solves the problem that the existing multi-stage dust removal mechanisms are inconvenient to remove from the inside of the fresh air handling unit, thus affecting the cleaning efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-stage dust removal mechanism for a fresh air handling unit includes a main body and two ventilation ducts. An inlet and outlet sleeve is slidably connected inside the ventilation ducts. A coarse baffle is fixedly connected inside the inlet and outlet sleeve. A baffle plate is slidably connected inside the inlet and outlet sleeve. A ventilation groove is formed on the surface of the baffle plate. Two L-shaped diversion grooves are formed inside the ventilation groove. A filter screen is fixedly connected to the surface of the baffle plate. An installation mechanism is provided between the baffle plate and the inlet and outlet sleeve. A fixing mechanism is provided between the inlet and outlet sleeve and the main body.

[0008] Preferably, the installation mechanism includes two mounting blocks fixedly connected to the side of the baffle plate, and two mounting slots are opened inside the inlet and outlet sleeve, with the mounting blocks located inside adjacent mounting slots.

[0009] Preferably, the surface of the mounting block is rotatably connected to an extension rod, one end of which is fixedly connected to a screw, and one end of the screw is threadedly connected to one end of an adjacent mounting groove.

[0010] Preferably, the fixing mechanism includes two L-shaped insertion rods fixedly connected to one end of the inlet / outlet sleeve, and two U-shaped insertion blocks fixedly connected to the surface of the body, with one end of the insertion rod passing through the interior of the adjacent insertion block.

[0011] Preferably, the surface of the insertion rod is provided with a fixing groove, and the surface of the insertion block is provided with a fixing rod, which is located inside the adjacent fixing groove.

[0012] Preferably, one end of the fixing rod is elastically connected to the surface of the insertion block via a compression spring.

[0013] This utility model has the following beneficial effects:

[0014] When it is necessary to clean the coarse screen, filter screen, and baffle plate, the inlet and outlet sleeve can be easily removed from the inside of the ventilation duct, and then the baffle plate can be removed from the inside of the inlet and outlet sleeve. This facilitates the cleaning of the coarse screen, filter screen, and baffle plate. After cleaning, the coarse screen, filter screen, and baffle plate can be reinstalled inside the inlet and outlet sleeve and fixed inside the ventilation duct. This allows the multi-stage dust removal mechanism to be easily disassembled and assembled without interfering with its use, thereby improving cleaning efficiency and ensuring dust removal effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Side view of the central fixing mechanism;

[0018] Figure 3 for Figure 1 Side view of the inlet / outlet sleeve;

[0019] Figure 4 for Figure 3 Side view of the middle baffle plate;

[0020] Figure 5 for Figure 4 Cross-sectional view of the middle baffle plate.

[0021] In the diagram: 1. Main body; 2. Ventilation duct; 3. Inlet / outlet sleeve; 4. Coarse baffle; 5. Baffle plate; 6. Ventilation slot; 7. Diversion slot; 8. Filter screen; 9. Installation mechanism; 10. Fixing mechanism; 901. Mounting block; 902. Mounting slot; 903. Extension rod; 904. Screw; 101. Insertion rod; 102. Insertion block; 103. Fixing slot; 104. Fixing rod; 105. Compression spring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Reference Figure 1-5A multi-stage dust removal mechanism for a fresh air handling unit includes a main body 1 and two ventilation ducts 2. The main body 1 is an existing fresh air handling unit. During operation, the fresh air handling unit first draws in fresh outdoor air through a fan. The air then undergoes a series of processes, including dust removal, dehumidification or humidification, and cooling or heating. The treated air is then delivered to the room by the fan, replacing the existing indoor air and simultaneously expelling stale air, thus improving ventilation in enclosed spaces. The ventilation ducts 2 are the ventilation pipes for the fresh air handling unit; one duct is for air intake, and the other is for ventilation... For air exhaust, both ventilation ducts 2 require dust removal equipment to protect the fresh air unit. The ventilation ducts 2 have sliding connections to inlet / outlet sleeves 3, and coarse baffles 4 are fixedly connected inside the inlet / outlet sleeves 3. When cleaning or maintenance of the coarse baffles 4 is required, the inlet / outlet sleeves 3 can be removed from the ventilation ducts 2, improving cleaning efficiency and ensuring the effectiveness of the coarse baffles 4. A baffle plate 5 is slidingly connected inside the inlet / outlet sleeves 3, and ventilation grooves 6 are formed on the surface of the baffle plate 5. Two L-shaped ventilation grooves are formed inside the ventilation grooves 6. The diversion channel 7 has a filter screen 8 fixedly connected to the surface of the baffle plate 5. The filter screen 8 is a two-stage dust removal filtration structure. After the coarse baffle 4 performs the first-stage dust removal, the airflow passes through the second-stage dust removal filtration and enters the ventilation channel 6 on the surface of the baffle plate 5. Then, it is diverted by the ventilation channel 6 into the ventilation duct 2 and then discharged. The diversion channel 7 can perform tertiary dust removal. After the second-stage dust removal, the remaining dust is finer. During the diversion, most of this dust is blocked by the ventilation channel 6. The airflow enters the diversion channel 7, but the dust is collected by the ventilation channel 6, ensuring the dust removal effect. The dust removal effect is good. An installation mechanism 9 is provided between the baffle plate 5 and the inlet / outlet sleeve 3. When it is necessary to clean the filter screen 8 and the coarse screen 4, the installation mechanism 9 can be opened to make it easy to remove the baffle plate 5 and clean the filter screen 8. A fixing mechanism 10 is provided between the inlet / outlet sleeve 3 and the main body 1. When it is necessary to clean the internal structure of the inlet / outlet sleeve 3, the fixing mechanism 10 can be opened and the inlet / outlet sleeve 3 can be removed to facilitate cleaning and maintenance of the inlet / outlet sleeve 3. After cleaning, it can be fixed back to the main body 1 by the fixing mechanism 10 for continued use.

[0024] Furthermore, the installation mechanism 9 includes two mounting blocks 901 fixedly connected to the side of the baffle plate 5. The interior of the inlet / outlet sleeve 3 has two mounting slots 902. The mounting blocks 901 are located inside adjacent mounting slots 902. When installing the baffle plate 5 inside the inlet / outlet sleeve 3 to facilitate secondary and tertiary dust removal, the baffle plate 5 can be moved and sent into the interior of the inlet / outlet sleeve 3. Then, the mounting blocks 901 are aligned with the mounting slots 902 so that after the baffle plate 5 enters the interior of the inlet / outlet sleeve 3, the mounting blocks 901 can enter the interior of the mounting slots 902 until the baffle plate 5 is completely inside the interior of the inlet / outlet sleeve 3.

[0025] Furthermore, an extension rod 903 is rotatably connected to the surface of the mounting block 901. One end of the extension rod 903 is fixedly connected to a screw 904. One end of the screw 904 is threadedly connected to one end of the adjacent mounting groove 902. After the baffle plate 5 is fully inserted into the inlet / outlet sleeve 3, the extension rod 903 is rotated so that the screw 904 is threadedly connected to the inside of the mounting groove 902, thereby fixing the mounting block 901 inside the mounting groove 902 and fixing the baffle plate 5 inside the inlet / outlet sleeve 3, so that the baffle plate 5 and the filter screen 8 can better perform dust removal and filtration.

[0026] Furthermore, the fixing mechanism 10 includes two L-shaped insertion rods 101 fixedly connected to one end of the inlet / outlet sleeve 3. Two U-shaped insertion blocks 102 are fixedly connected to the surface of the body 1. One end of the insertion rod 101 passes through the interior of the adjacent insertion block 102. When the inlet / outlet sleeve 3 needs to be installed on the body 1, the inlet / outlet sleeve 3 is aligned with the ventilation duct 2 and then the inlet / outlet sleeve 3 is sent into the interior of the ventilation duct 2. During this process, the insertion rod 101 needs to be aligned with the insertion block 102 so that the insertion rod 101 enters the interior of the insertion block 102, thereby restricting the inlet / outlet sleeve 3 by the insertion rod 101.

[0027] Furthermore, a fixing groove 103 is provided on the surface of the insertion rod 101, and a fixing rod 104 is provided on the surface of the insertion block 102. The fixing rod 104 is located inside the adjacent fixing groove 103. Before moving the inlet / outlet sleeve 3, the fixing rod 104 can be pulled outward so that the insertion rod 101 can smoothly enter the interior of the insertion block 102. Then, the fixing rod 104 can be moved so that one end of the fixing rod 104 can enter the interior of the fixing groove 103, thereby ensuring that the inlet / outlet sleeve 3 is installed inside the ventilation duct 2.

[0028] Furthermore, one end of the fixing rod 104 is elastically connected to the surface of the insertion block 102 via a compression spring 105. The fixing rod 104 receives a force that moves toward the insertion block 102 through the compression spring 105, so that the fixing rod 104 can ensure the stability of fixing the inlet and outlet sleeve 3.

[0029] In summary:

[0030] When the fresh air unit body 1 is needed for air exchange and circulation, the inlet and outlet sleeves 3 can be installed inside the two ventilation ducts 2 respectively, with the two inlet and outlet sleeves 3 far apart from each other. Before inserting the inlet sleeve into the ventilation duct 2, first pull the fixing rod 104 outward, and then insert the inlet and outlet sleeve 3 into the ventilation duct 2. During this process, the insertion rod 101 enters the insertion block 102, and then the fixing rod 104 is released. One end of the fixing rod 104 moves into the adjacent fixing groove 103 by the elastic force of the compression spring 105, thereby fixing the inlet and outlet sleeve 3 to the surface of the body 1, so that the internal structure of the inlet and outlet sleeve 3 can normally perform multi-stage dust removal. When dust removal is needed, air enters the interior of the inlet and outlet sleeve 3 through the coarse baffle 4. During this process, the coarse baffle 4 blocks larger dust particles, and the remaining dust enters the interior of the inlet and outlet sleeve 3. Then, the dust is filtered by the filter screen 8, and then the air... The dust is discharged into the ventilation duct 2 through the ventilation slots 6 and the diversion slots 7, thus performing multi-stage dust removal. When it is necessary to clean the coarse baffle 4 and the filter screen 8, the extension rod 903 can be rotated to disengage the screw 904 from the installation slot 902, and then the baffle plate 5 can be pulled outward to disengage the installation block 901 from the installation slot 902, thereby allowing the baffle plate 5 and the filter screen 8 to be removed for cleaning. With the above structure, when the fresh air unit needs to be used, the coarse baffle 4 and the filter screen 8 can be sent into the ventilation duct 2 to filter the air, preventing dust from affecting the use of the fresh air unit and ensuring the quality of air exchange. When it is necessary to clean the coarse baffle 4 and the filter screen 8, they can be easily removed for cleaning, ensuring the dust removal effect while being quick to disassemble and maintain.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage dust removal mechanism for a fresh air handling unit, comprising a main body (1) and two ventilation ducts (2), characterized in that, The ventilation duct (2) is slidably connected to an inlet / outlet sleeve (3), and a coarse baffle (4) is fixedly connected inside the inlet / outlet sleeve (3). A baffle plate (5) is slidably connected inside the inlet / outlet sleeve (3). A ventilation groove (6) is provided on the surface of the baffle plate (5). Two L-shaped diversion grooves (7) are provided inside the ventilation groove (6). A filter screen (8) is fixedly connected to the surface of the baffle plate (5). An installation mechanism (9) is provided between the baffle plate (5) and the inlet / outlet sleeve (3). A fixing mechanism (10) is provided between the inlet / outlet sleeve (3) and the main body (1).

2. The multi-stage dust removal mechanism for a fresh air handling unit according to claim 1, characterized in that, The installation mechanism (9) includes two mounting blocks (901) fixedly connected to the side of the baffle plate (5). The inlet / outlet sleeve (3) has two mounting slots (902) inside, and the mounting blocks (901) are located inside the adjacent mounting slots (902).

3. The multi-stage dust removal mechanism for a fresh air handling unit according to claim 2, characterized in that, An extension rod (903) is rotatably connected to the surface of the mounting block (901). One end of the extension rod (903) is fixedly connected to a screw (904), and one end of the screw (904) is threadedly connected to one end of the adjacent mounting groove (902).

4. The multi-stage dust removal mechanism for a fresh air handling unit according to claim 1, characterized in that, The fixing mechanism (10) includes two L-shaped insertion rods (101) fixedly connected to one end of the inlet / outlet sleeve (3), and two U-shaped insertion blocks (102) fixedly connected to the surface of the body (1), with one end of the insertion rod (101) passing through the interior of the adjacent insertion block (102).

5. A multi-stage dust removal mechanism for a fresh air handling unit according to claim 4, characterized in that, The surface of the insertion rod (101) is provided with a fixing groove (103), and the surface of the insertion block (102) is provided with a fixing rod (104), which is located inside the adjacent fixing groove (103).

6. A multi-stage dust removal mechanism for a fresh air handling unit according to claim 5, characterized in that, One end of the fixing rod (104) is elastically connected to the surface of the insertion block (102) via a compression spring (105).

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