A duct dust removal device for fresh air system

Abstract

The present invention discloses a duct dust prevention device for a fresh air system, which can quickly replace or clean a duct filter plate when ventilating and dust-proofing and maintaining the ventilation duct of the fresh air system. The device is characterized in that a main body shell is fixed between two flanges by a plurality of fasteners, the main body shell and the two flanges are provided with through holes corresponding to the ventilation duct in the middle, bearings are provided at the edges of the through holes, a through sliding groove is provided in the main body shell, two fixing grooves are provided on the inner walls on both sides of the sliding groove, and are respectively provided at the upper and lower ends, a rotating plate is placed at the bottom of the main body shell through a rotating block, a through groove is provided in the middle of the rotating plate, and is correspondingly connected to the sliding groove, a sliding plate is provided at the bottom of the rotating plate, one end of the sliding plate is placed in the sliding groove, the other end of the sliding plate passes through the bottom of the sliding groove and extends to the outside of the sliding groove, a pull ring is provided on the other end of the sliding plate, and grooves are provided on both sides of the sliding plate.

Description

Technical Field

[0001] The present invention discloses a dust removal device for a fresh air system duct, which relates to a device capable of ventilating and dust removal for a fresh air system duct, and belongs to the technical field of air conditioning, and in particular to a device capable of quickly replacing or cleaning a duct filter plate when ventilating and dust removal and maintenance are performed for the fresh air system duct. Background Art

[0002] The fresh air system is an independent air treatment system consisting of an air supply system and an exhaust system. The ducted fresh air system consists of a fresh air fan and duct accessories. It filters and circulates the air by introducing outdoor air into the room and exhausting the indoor air through the duct. The existing fresh air system needs to use ducts to circulate indoor and outdoor air when in use. Therefore, when in use, dust removal nets and other filtering devices will be installed in the air inlet duct to prevent the fresh air system from being blocked by dust passing through the duct, affecting the normal operation of the fresh air system. Because the fresh air system needs to replace the filter frequently when in use, and the existing duct dust removal filter is inconvenient to replace and troublesome to operate, a lot of time is wasted when replacing and cleaning the filter.

[0003] Announcement No. CN211822991U discloses a dust removal device for the air inlet of a fresh air system, including an air inlet duct, the air inlet of the air inlet duct is installed with a spherical wind hood, the spherical wind hood is rotatably connected to the air inlet duct, the air inlet duct is fixedly connected with a cover plate, a side of the cover plate close to the spherical wind hood is fixedly connected with bristles, one end of the bristles is fixedly connected to the cover plate, and the free end of the bristles is elastically in contact with the blades of the spherical wind hood. The filter cannot be quickly replaced when the device is in use, and can only be set at the air inlet when in use, and cannot be set inside the duct for dust removal.

[0004] Announcement No. CN206618053U discloses a fresh air ventilation device including a pipeline, an outdoor air outlet, a duct fan, a duct air valve, a filter element and an indoor air outlet arranged in sequence from the front end to the rear end of the pipeline, the pipeline includes a main pipeline and an insertion pipeline, the indoor air outlet includes a ventilation mesh plate and a handle, a circle of sponge dust removal ring is arranged on the outer side of the front end of the insertion pipeline, and a circle of sealing ring is arranged on the outer side of the rear end of the insertion pipeline; a conductive contact I connected to an external power supply is arranged on the inner side of the main pipeline, and a conductive contact II connected to the duct fan and the duct air valve power supply circuit cooperating with the conductive contact I is arranged on the outer side of the insertion pipeline; the control switch of the duct fan and the duct air valve is arranged in the handle, and the device can only be replaced from one direction when replacing the filter element, which is inconvenient for the staff to operate and cannot freely adjust the replacement angle according to needs. Summary of the invention

[0005] In order to improve the above situation, a duct dust removal device for a fresh air system of the present invention provides a device that can quickly replace or clean the duct filter plate when ventilating and dusting and maintaining the ventilation duct of the fresh air system.

[0006] A duct dust removal device for a fresh air system of the present invention is implemented as follows: A duct dust removal device for a fresh air system of the present invention is composed of a sliding plate, a rotating plate, a main body shell, a flange, a fastener, a sliding groove, a bearing, a rotating block, a reset spring, a fixed block, a fixed groove, a through hole, a groove, a pull ring, a duct filter plate, a through groove, a connecting shaft and a filter hole. The main body shell is fixed between two flanges by a plurality of fasteners. Through holes corresponding to the ventilation ducts are opened in the middle of the main body shell and the two flanges. Bearings are arranged at the edges of the through holes. A through sliding groove is opened in the main body shell. Two fixed grooves are opened on the inner walls on both sides of the sliding groove, and are arranged respectively. At the upper and lower ends, the rotating plate is placed at the bottom of the main body shell through the rotating block, a through groove is opened in the middle of the rotating plate, and is correspondingly connected to the sliding groove, a sliding plate is placed at the bottom of the rotating plate, one end of the sliding plate is placed in the sliding groove, and the other end of the sliding plate passes through the bottom of the sliding groove and extends to the outside of the sliding groove, a pull ring is placed on the other end of the sliding plate, grooves are opened on both sides of the sliding plate, a return spring is built in the groove, and one end of the return spring is connected to the inner wall of the groove, one end of the fixed block is placed in the groove, and is connected to the other end of the return spring, the other end of the fixed block passes through the groove and extends to the outside of the groove, and the other end face of the fixed block is a smooth semicircular protrusion, A circular through hole is opened in the middle of the sliding plate, and the circular through hole corresponds to the through hole in the middle of the main body shell. The pipeline filter plate is placed on the circular through hole through the connecting shafts on both sides. The thickness of the pipeline filter plate is less than the thickness of the sliding plate. The pipeline filter plate is a circular plate, and the thickness of the pipeline filter plate gradually decreases from the edge to the middle. A circular through groove is opened in the middle of the pipeline filter plate, and an oblique groove is opened in the circumferential direction of the edge of the circular through hole. The top width of the oblique groove is less than the bottom width. Three circles of filter holes are arranged circumferentially on the pipeline filter plate, and the arrangement density gradually decreases from the edge to the middle of the pipeline filter plate. The filter holes are opened obliquely and tilted from the edge to the middle of the pipeline filter plate.

[0007] Furthermore, the filter hole is equipped with a dust removal net;

[0008] Furthermore, a silica gel layer is disposed on the surface of the pipeline filter plate.

[0009] Beneficial effects: 1. The pipeline filter plate can be rotated in the pipeline through the connecting groove, and filter holes are opened on the top of the filter plate, which can achieve better filtering effect.

[0010] 2. The pipeline filter plate is arranged in the middle of the pipeline and can be used in conjunction with the traditional filtering device arranged at the air inlet.

[0011] 3. When replacing the filter plate, because the bearing is installed inside the device, the flange can be freely rotated according to work requirements to select the appropriate angle for replacement.

[0012] 4. Simple structure, convenient and practical.

[0013] 5. Low cost and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional structural diagram of a pipeline dust removal device for a fresh air system of the present invention;

[0015] Figure 2 A schematic structural diagram of a pipeline dust removal device for a fresh air system according to the present invention;

[0016] Figure 3 A schematic structural diagram of a rotating block of a pipeline dust removal device for a fresh air system according to the present invention;

[0017] Figure 4 A schematic structural diagram of a main body shell of a duct dust removal device for a fresh air system according to the present invention;

[0018] Figure 5 A three-dimensional structural diagram of a sliding plate of a pipeline dust removal device for a fresh air system according to the present invention.

[0019] The accompanying drawings show: a sliding plate (1), a rotating plate (2), a main body shell (3), a ventilation pipe (4), a flange (5), a fastener (6), a sliding groove (7), a bearing (8), a rotating block (9), a return spring (10), a fixed block (11), a fixed groove (12), a through hole (13), a groove (14), a pull ring (15), a pipe filter plate (16), a through groove (17), a connecting shaft (18), and a filter hole (19). DETAILED DESCRIPTION

[0020] A duct dust removal device for a fresh air system of the present invention is implemented as follows: A duct dust removal device for a fresh air system of the present invention comprises a sliding plate (1), a rotating plate (2), a main body shell (3), a flange (5), a fastener (6), a sliding groove (7), a bearing (8), a rotating block (9), a reset spring (10), a fixed block (11), a fixed groove (12), a through hole (13), a groove (14), a pull ring (15), a duct filter plate (16), a through groove (17), a connecting shaft (18) and a filter hole (19); the main body shell (3) is fixed between two flanges (5) by a plurality of fasteners (6); a through hole (13) corresponding to the ventilation duct (4) is formed in the middle of the main body shell (3) and the two flanges (5); a bearing (8) is disposed at the edge of the through hole (13); a through sliding groove (7) is formed in the main body shell (3); two fixing grooves (12) are formed on the inner walls on both sides of the sliding groove (7); and are respectively arranged at the upper and lower ends. The rotating plate (2) is arranged at the bottom of the main shell (3) through the rotating block (9). A through groove (17) is opened in the middle of the rotating plate (2) and is correspondingly connected to the sliding groove (7). A sliding plate (1) is arranged at the bottom of the rotating plate (2). One end of the sliding plate (1) is placed in the sliding groove (7), and the other end of the sliding plate (1) passes through the bottom of the sliding groove (7) and extends to the outside of the sliding groove (7). A pull ring (15) is arranged on the other end of the sliding plate (1). Grooves (14) are opened on both sides of the sliding plate (1). A return spring (10) is built in the groove (14), and one end of the return spring (10) is connected to the inner wall of the groove (14). One end of the fixed block (11) is placed in the groove (14) and is connected to the other end of the return spring (10). The other end of the fixed block (11) passes through the groove (14) and extends to the outside of the groove (14). The other end surface of the fixed block (11) is a smooth semicircular protrusion. A circular through hole is opened in the middle of the sliding plate (1), and the circular through hole corresponds to the through hole (13) in the middle of the main shell (3). The pipeline filter plate (16) is placed on the circular through hole through the connecting shafts (18) on both sides. The thickness of the pipeline filter plate (16) is less than the thickness of the sliding plate (1). The pipeline filter plate (16) is a circular plate. The thickness of the pipeline filter plate (16) gradually decreases from the edge to the middle. A circular through groove is opened in the middle of the pipeline filter plate (16). An oblique groove is opened in the circumferential direction of the edge of the circular through hole. The top width of the oblique groove is less than the bottom width. Three circles of filter holes (19) are arranged circumferentially on the pipeline filter plate (16), and the arrangement density gradually decreases from the edge to the middle of the pipeline filter plate (16). The filter holes (19) are opened obliquely and are inclined from the edge to the middle of the pipeline filter plate (16);

[0021] Furthermore, the filter hole (19) is provided with a dust removal net;

[0022] Furthermore, a silica gel layer is provided on the surface of the pipeline filter plate (16);

[0023] When in use, the device is first inserted between the two pipes through the through hole (13), and then fixed by the fastener (6), and then the sliding plate (1) is pushed into the main body shell (3). When the sliding plate (1) is pushed so that the groove (14) and the fixing groove (12) are in corresponding positions, the fixing block (11) is pushed into the fixing groove (12) by the thrust of the return spring (10). By limiting and fixing the fixing block (11), the sliding plate (1) is fixed and limited. When the fresh air system is running, the pipe filter plate (16) can also rotate with the wind direction to filter and intercept dust. When the dust removal net needs to be cleaned, the device is rotated to the required direction through the bearing (8), and then the sliding plate (1) is pulled out through the pull ring (15) for cleaning or replacement.

[0024] The main body shell (3) is fixed between the two flanges (5) by a plurality of fasteners (6), so that the main body shell (3) and the two flanges (5) can be more tightly combined together to prevent the main body shell (3) from falling off and sliding out. At the same time, the main body shell (3) can be limited by fixing screws to prevent the main body shell (3) from deflecting, thereby affecting the working efficiency of the device;

[0025] The main body shell (3) and the two flanges (5) are each provided with a through hole (13) in the middle, and the interconnected design enables impurities in the ventilation pipe to be intercepted at the filter hole (19) when passing through the through hole (13), and will not affect the normal operation of the pipeline;

[0026] The design of a bearing (8) disposed on the edge of the through hole (13) enables the flange (5) to rotate, thereby allowing the pipeline filter plate (16) to be freely replaced in all directions;

[0027] The rotating plate (2) is provided with a through groove (17) in the middle thereof, and is correspondingly connected to the sliding groove (7), so that the fixed groove (12) can limit the sliding plate (1) through the fixed block (11), so that the pipeline filter plate (16) just corresponds to the sliding groove (7), and the sliding plate (1) can be conveniently disassembled and replaced by the return spring (10), which is convenient for maintenance and cleaning;

[0028] The other end surface of the fixed block (11) is a smooth semicircular protrusion, and the design of a circular through hole in the middle of the sliding plate (1) can reduce friction resistance when the sliding plate (1) moves up and down, making the sliding plate (1) move more smoothly;

[0029] The filter holes (19) are designed to be opened obliquely, so that dust can be intercepted on the duct filter plate (16) when dust passes through, thereby preventing dust particles from directly passing through the filter holes (19), thereby improving dust removal efficiency;

[0030] The filter hole (19) is designed with a dust removal net built in, which can filter smaller dust, enhance the dust removal effect in the pipeline, and improve the ventilation efficiency;

[0031] The design of a silica gel layer on the surface of the pipeline filter plate (16) can directly adsorb part of the dust on the surface silica gel layer when dust passes through, thereby improving the dust removal efficiency;

[0032] The purpose of quickly replacing or cleaning the duct filter plate (16) is achieved when ventilating and dust-removing and maintaining the ventilation duct of the fresh air system.

Claims

1. A duct dust removal device for a fresh air system, characterized in that: The main body shell is fixed between two flanges by a plurality of fasteners, and through holes corresponding to the ventilation pipes are provided in the middle of the main body shell and the two flanges, and bearings are provided at the edges of the through holes. A through sliding groove is provided in the main body shell, and two fixing grooves are provided on the inner walls on both sides of the sliding groove, and are respectively provided at the upper and lower ends. The rotating plate is provided at the bottom of the main body shell through a rotating block, and a through groove is provided in the middle of the rotating plate, and is correspondingly connected to the sliding groove. A sliding plate is provided at the bottom of the rotating plate, and one end of the sliding plate is provided in the sliding groove, and the other end of the sliding plate passes through the bottom of the sliding groove and extends to the outside of the sliding groove. The sliding plate A pull ring is arranged on the other end of the sliding plate, grooves are arranged on both sides of the sliding plate, a return spring is arranged in the groove, and one end of the return spring is connected to the inner wall of the groove, one end of the fixed block is placed in the groove, and is connected to the other end of the return spring, the other end of the fixed block passes through the groove and extends out of the groove, a circular through hole is arranged in the middle of the sliding plate, the circular through hole corresponds to the through hole in the middle of the main body shell, the pipeline filter plate is placed on the circular through hole through the connecting shafts on both sides, a circular through groove is arranged in the middle of the pipeline filter plate, an oblique groove is arranged circumferentially on the edge of the circular through hole, and three circles of filter holes are arranged circumferentially on the pipeline filter plate.

2. A duct dust removal device for a fresh air system according to claim 1, characterized in that: The filter hole is equipped with a dust removal net.

3. A duct dust removal device for a fresh air system according to claim 1, characterized in that: A silica gel layer is arranged on the surface of the pipeline filter plate.

4. A duct dust removal device for a fresh air system according to claim 1, characterized in that: The other end surface of the fixing block is a smooth semicircular protrusion.

5. A duct dust removal device for a fresh air system according to claim 1, characterized in that: The filter holes are opened obliquely and are inclined from the edge of the pipeline filter plate toward the middle.

6. A duct dust removal device for a fresh air system according to claim 1, characterized in that: The top width of the oblique groove is smaller than the bottom width.

7. A duct dust removal device for a fresh air system according to claim 1, characterized in that: The arrangement density of the filter holes gradually decreases from the edge to the middle of the pipeline filter plate.

8. A duct dust removal device for a fresh air system according to claim 7, characterized in that: The thickness of the pipeline filter plate is smaller than the thickness of the sliding plate.

9. A duct dust removal device for a fresh air system according to claim 8, characterized in that: The pipeline filter plate is a circular plate.

10. A duct dust removal device for a fresh air system according to claim 8, characterized in that: The thickness of the pipeline filter plate gradually decreases from the edge to the middle.

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