Timing dust removal type hood

Abstract

The utility model provides a wind cap, belongs to the technical field of building ventilation pipelines, and particularly relates to a timing dust removal type wind cap which comprises a wind cap body, a timer is arranged on the lower portion in the wind cap body, and the timer is electrically connected with electric telescopic rods evenly distributed on the periphery of the timer. The other end of the electric telescopic rod is correspondingly connected with a ratchet wheel gear through a movable plate, the interior of the ratchet wheel gear is connected with a movable block corresponding to the ratchet wheel gear through a ratchet wheel groove, and the wind cap body drives the ratchet wheel gear arranged in the wind cap body to rotate through rotation of the wind cap body; the ratchet gear can only rotate in one direction by means of the movable plate correspondingly meshed with the ratchet gear, reverse rotation is prevented, elastic potential energy is accumulated along with rotation of the ratchet gear, when the timer is triggered and drives the electric telescopic rod to retract, the movable plate leaves the ratchet gear, the ratchet gear releases the elastic potential energy and rotates, and dust removal is achieved.

Description

Technical Field

[0001] The utility model provides a hood, belonging to the technical field of building ventilation ducts, and particularly relates to a timed dust removal hood. Background Art

[0002] A hood, also known as a hood cover or hood, is a device typically installed at the top of a building's flue or chimney. Its primary function is to guide smoke or exhaust gases out of the chimney and prevent wind from backflowing into the chimney. Hoods are often designed with aerodynamic considerations in mind, ensuring efficient smoke exhaust regardless of wind direction and strength, while also minimizing noise and preventing intrusion from rainwater.

[0003] Existing hoods can experience the problem of airflow-carried particle deposition over long periods of operation. When pollutants like soot pass through the hood, they adhere to the hood, causing a buildup of dirt inside. If not cleaned regularly, this buildup will gradually affect the hood's exhaust efficiency and performance. Because hoods are often located on the top floors of buildings, manual cleaning is time-consuming, labor-intensive, and inefficient. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the embodiments of the present application provide a timed dust removal hood, thereby solving the problem of the inconvenience of cleaning the dust accumulation inside the existing hood.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a timed dust removal hood, comprising a hood body, a timer provided at the lower interior of the hood body, the timer being electrically connected to electric telescopic rods evenly distributed around the timer, the other end of the electric telescopic rod being connected to a ratchet gear through a movable plate, and the ratchet gear being connected to a movable block corresponding to the timer through a ratchet groove.

[0006] Preferably, the inner bottom end of the hood body is fixedly connected to a gear ring sleeved on the outside of the ratchet gear, and a support plate fixedly connected to the outer wall is provided below the gear ring.

[0007] Preferably: the support plate is movably connected to a transmission gear placed under the ratchet gear through several evenly distributed rotating shafts, a fixed shaft with a diameter corresponding to the ratchet groove is fixedly connected above the transmission gear, a connecting rod is fixedly connected to the top of the transmission gear, and a reset spring is fixedly connected between the fixed shaft and the ratchet groove.

[0008] Preferably, one end of the connecting rod away from the fixed axis is fixedly connected to a blocking plate with a diameter larger than that of the ratchet groove, and a first spring is provided on the side of the connecting rod close to the movable fast end.

[0009] Preferably, a connecting ring is sleeved on the exterior of the blocking plate, and a fan leaf is fixedly connected to a side of the connecting ring facing away from the ratchet gear.

[0010] Preferably, a movable shaft is provided between one end of the movable plate close to the electric telescopic rod and the electric telescopic rod, a second spring is provided on one side of the movable plate close to the electric telescopic rod, and the tilting direction of the movable plate conforms to the gear tooth direction of the ratchet gear.

[0011] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0012] The utility model arranges a hood body to rotate with its own rotation to drive the ratchet gear placed inside it to rotate. The ratchet gear ensures that it can only rotate in one direction with the help of a movable plate that meshes with itself to prevent reversal, and then accumulates elastic potential energy as it rotates. When the timer is triggered and drives the electric telescopic rod to retract, the movable plate leaves the ratchet gear, and the ratchet gear releases the elastic potential energy and rotates to achieve dust removal.

[0013] Other advantages, objectives and features of the present invention will be described in part in the following description and will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional schematic diagram of a timed dust removal hood of the utility model;

[0015] Figure 2 This is a cross-sectional view of a timed dust removal hood of the utility model;

[0016] Figure 3 This is a three-dimensional schematic diagram of the gear ring portion of a timed dust removal hood of the present invention;

[0017] Figure 4 This is an exploded view of the ratchet gear of a timed dust removal hood of the utility model.

[0018] As shown in the figure:

[0019] 1. Hood body;

[0020] 11. Gear ring; 12. Support plate; 13. Transmission gear; 14. Connecting rod; 15. Blocking plate; 16. First spring; 17. Connecting ring; 18. Fan leaf;

[0021] 2. Timer;

[0022] 21. Electric telescopic rod; 22. Movable plate; 23. Ratchet gear; 24. Ratchet slot; 25. Movable block; 26. Second spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are for illustrative purposes only and do not represent the only implementation method.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains; the terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention; the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] like Figure 1 and Figure 2 A timed dust removal hood is shown, comprising a hood body 1. The hood body 1 is characterized by a timer 2 disposed within its interior and lower portion. The timer 2 is electrically connected to electric telescopic rods 21 evenly distributed around the hood body. The other ends of the electric telescopic rods 21 are connected to corresponding ratchet gears 23 via movable plates 22. Within the ratchet gears 23, corresponding movable blocks 25 are connected via ratchet slots 24. When the hood body 1 rotates, the gear ring 11 rotates, thereby rotating the transmission gear 13. The rotation of the transmission gear 13 also rotates the movable blocks 25. The movable blocks 25, through their shape and the action of a first spring 16, engage with the ratchet slots 24, thereby rotating the transmission gear 13 and the ratchet gear 23. When the electric telescopic rods 21 retract, the ratchet gear 23 rotates in the opposite direction of the transmission gear 13. At this point, the ratchet slots 24 contact the inclined surfaces of the movable blocks 25, squeezing the movable blocks 25 and compressing the first spring 16, causing the ratchet gear 23 to rotate in reverse.

[0027] In this embodiment, the hood body 1 is arranged to rotate with the help of its own rotation to drive the ratchet gear 23 placed inside it to rotate. The ratchet gear 23 uses the movable plate 22 that is meshed with itself. The movable plate 22 supports the teeth of the ratchet gear 23 under the action of the second spring 26 to ensure that it can only rotate in one direction to prevent reversal; the fixed shaft passes through the transmission gear 13 and is inserted into the ratchet groove 24. The fixed shaft will not move. Therefore, as the ratchet gear 23 rotates, the reset spring will gradually be compressed, and then the elastic potential energy will be accumulated as it rotates. When the timer 2 is triggered and drives the electric telescopic rod 21 to retract, the movable plate 22 leaves the ratchet gear 23, and the ratchet gear 23 rotates under the action of the reset spring, driving the fan blades 18 to rotate to prevent internal dust accumulation.

[0028] like Figure 3 and Figure 4 As shown, the inner bottom end of the hood body 1 is fixedly connected to a gear ring 11 that is sleeved on the outside of the ratchet gear 23, and a support plate 12 that is fixedly connected to the outer wall is provided below the gear ring 11. A transmission gear 13 placed below the ratchet gear 23 is movably connected to the support plate 12 via a number of evenly distributed rotating shafts. A fixed shaft with a diameter corresponding to the ratchet groove 24 is fixedly connected above the transmission gear 13. A connecting rod 14 is fixedly connected to the inner top of the transmission gear 13, and a return spring is fixedly connected between the fixed shaft and the ratchet groove 24. A blocking plate 15 with a diameter larger than that of the ratchet groove 24 is fixedly connected to the end of the connecting rod 14 away from the fixed shaft. A first spring 16 is provided on the side of the connecting rod 14 close to the movable block 25. A connecting ring 17 is sleeved on the outside of the blocking plate 15, and a fan leaf 18 is fixedly connected to the side of the connecting ring 17 facing away from the ratchet gear 23. A movable shaft is provided between one end of the movable plate 22 close to the electric telescopic rod 21 and the electric telescopic rod 21 . A second spring 26 is provided on one side of the movable plate 22 close to the electric telescopic rod 21 . The tilt direction of the movable plate 22 conforms to the gear tooth direction of the ratchet gear 23 .

[0029] In this embodiment, when the hood body 1 rotates, it drives the gear ring 11 to rotate, thereby driving the transmission gear 13 to rotate. When the transmission gear 13 rotates, it drives the movable block 25 to rotate together. The movable block 25 uses its own shape and the action of the first spring 16 to engage with the ratchet groove 24, thereby realizing that the transmission gear 13 drives the ratchet gear 23 to rotate together. When the electric telescopic rod 21 retracts, the ratchet gear 23 moves in the opposite direction of rotation of the transmission gear 13. At this time, the ratchet groove 24 will contact the inclined surface of the movable block 25, thereby squeezing the movable block 25 to compress the first spring 16, and the ratchet gear 23 will reverse on its own.

[0030] During use, the hood body 1 begins rotating under normal operating conditions. A timer 2 located below the hood body 1 electrically controls the evenly distributed electric telescopic rods 21. The other ends of the electric telescopic rods 21 are connected to ratchet gears 23 via movable plates 22. The ratchet gears 23 engage with movable blocks 25 via ratchet slots 24. The movable plates 22, under the action of a second spring 26, support the teeth of the ratchet gears 23, ensuring that the ratchet gears 23 can only rotate in one direction and prevent reverse rotation. As the hood body 1 rotates, the gear ring 11 is driven, which in turn rotates the transmission gear 13. The transmission gear 13 engages with the ratchet slots 24 via movable blocks 25 and a first spring 16, achieving synchronous rotation with the ratchet gears 23. When the timer 2 reaches the set time, the electric telescopic rods 21 retract, and the movable plates 22 move away from the ratchet gears 23. The ratchet gears 23, now rotated by the return spring, drive the fan blades 18, clearing dust from the fan blades. During the entire process, the support plate 12 is fixedly connected to the gear ring 11 and the outer wall, the transmission gear 13 is connected to the ratchet groove 24 through a fixed shaft and a return spring, the connecting rod 14 is fixedly connected to the blocking plate 15 and the movable block 25, and a connecting ring 17 is sleeved on the outside of the blocking plate 15, and the connecting ring 17 is fixedly connected to the fan leaf 18 to ensure the stable operation of the entire device and the effective execution of the timed dust removal function.

[0031] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this technology may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

Claims

1. A timed dust removal hood, comprising a hood body (1), characterized in that: A timer (2) is provided at the lower part of the interior of the hood body (1). The timer (2) is electrically connected to electric telescopic rods (21) evenly distributed around the timer. The other end of the electric telescopic rod (21) is connected to a ratchet gear (23) via a movable plate (22). The ratchet gear (23) is connected to a movable block (25) corresponding to the timer via a ratchet groove (24).

2. The timed dust removal hood according to claim 1, characterized in that: The inner bottom end of the hood body (1) is fixedly connected to a gear ring (11) sleeved on the outside of the ratchet gear (23), and a support plate (12) fixedly connected to the outer wall is provided below the gear ring (11).

3. The timed dust removal hood according to claim 2, characterized in that: The support plate (12) is movably connected to a transmission gear (13) placed below the ratchet gear (23) via a plurality of evenly distributed rotating shafts; a fixed shaft having a diameter corresponding to that of the ratchet groove (24) is fixedly connected above the transmission gear (13); a connecting rod (14) is fixedly connected above the interior of the transmission gear (13); and a reset spring is fixedly connected between the fixed shaft and the ratchet groove (24).

4. The timed dust removal hood according to claim 3, characterized in that: The end of the connecting rod (14) away from the fixed axis is fixedly connected to a blocking plate (15) having a diameter larger than that of the ratchet groove (24), and a first spring (16) is provided on the side of the connecting rod (14) close to the movable block (25).

5. The timed dust removal hood according to claim 4, characterized in that: The blocking plate (15) is sleeved with a connecting ring (17) on its exterior, and a fan leaf (18) is fixedly connected to the side of the connecting ring (17) facing away from the ratchet gear (23).

6. The timed dust removal hood according to claim 1, characterized in that: A movable rotating shaft is provided between one end of the movable plate (22) close to the electric telescopic rod (21) and the electric telescopic rod (21), a second spring (26) is provided on one side of the movable plate (22) close to the electric telescopic rod (21), and the tilting direction of the movable plate (22) conforms to the gear tooth direction of the ratchet gear (23).

Images