CN219735572U

CN219735572U - Exhaust valve

Info

Publication number: CN219735572U
Application number: CN202223137107.XU
Authority: CN
Inventors: 唐宏林; 李伟
Original assignee: Guangzhou Qinlin Environmental Protection Technology Co ltd
Current assignee: Guangzhou Qinlin Environmental Protection Technology Co ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-09-22
Anticipated expiration: 2032-11-24

Abstract

The utility model discloses an exhaust valve, which comprises a shell and at least one blade, wherein an air outlet is formed in the shell; each blade is rotatably arranged at the air outlet around a horizontal axis corresponding to the blade and can be switched from a closing state for closing the air outlet to an opening state for opening the air outlet when rotating clockwise; the blade can rotate under the dead weight to switch to a closed state; the lower end of the blade is positioned at the left lower part of the horizontal axis corresponding to the blade when the blade is in an open state; each blade is provided with a balancing weight which can rotate along with the blade, and the balancing weights can be arranged close to or far away from the horizontal axis in a moving way; when the blades are switched to an open state, the gravity center of the balancing weight is positioned at the upper right part of the horizontal axis corresponding to the balancing weight; the utility model can adjust the opening angle of the blade.

Description

Exhaust valve

Technical Field

The utility model relates to the field of exhaust equipment, in particular to an exhaust valve.

Background

The fan is also called ventilating fan, which is an air-conditioning electric appliance for making indoor and outdoor air exchange by driving the fan blade to rotate and driving the air flow by the motor. The purpose of air exhaust is to remove indoor polluted air, and adjust the temperature, humidity and feel effect; when the air exhaust device is used, the blades on the air exhaust valve of the exhaust fan rotate to the position for opening the air outlet, and the blades rotate to exhaust indoor air through the air outlet; for example, when the exhaust fan is applied to places such as a computer control room, when the weather is hot, the air outlet of the exhaust fan needs to be enlarged so as to accelerate heat dissipation, but in winter, the air outlet of the exhaust fan needs to be reduced; the opening angle of the blade of the existing exhaust fan determines the opening size of the air outlet, so that the problem of adjusting the opening angle of the blade of the exhaust fan is needed to be solved.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide an exhaust valve which can adjust the opening angle of a blade.

The utility model adopts the following technical scheme:

a vent valve comprising a housing and at least one vane, wherein:

an air outlet is formed in the shell;

each blade is rotatably arranged at the air outlet around a horizontal axis corresponding to the blade and can be switched from a closing state for closing the air outlet to an opening state for opening the air outlet when rotating clockwise; the blade can be rotated under the dead weight to switch to the closed state; the lower end of the blade is positioned at the left lower part of the horizontal axis corresponding to the blade when the blade is in the open state;

each blade is provided with a balancing weight which can rotate along with the blade, and the balancing weights can be arranged close to or far away from the horizontal axis in a moving way; and when the blades are switched to the open state, the gravity center of the balancing weight is positioned at the upper right part of the horizontal axis corresponding to the balancing weight.

Further, the blades are connected with a rotating shaft and are arranged at the air outlet through the rotating shaft; the central axis of the rotating shaft is the horizontal axis.

Further, the horizontal axis is disposed above a center of gravity of the corresponding blade.

Further, the device also comprises a locking screw; the guide rods are arranged on the blades; the balancing weight is arranged on the guide rod and can move under the guidance of the guide rod; the locking screw is used for locking the balancing weight on the guide rod.

Further, the balancing weight is sleeved outside the guide rod.

Further, the balancing weight is provided with a locking screw hole; the rod part of the locking screw penetrates through the locking screw hole, and the balancing weight is abutted against the guide rod by the head part of the locking screw.

Further, a limiting piece is arranged on the outer frame; the limiting piece is used for abutting against the blade when the blade is switched to the closed state so as to prevent the blade from continuing to rotate in the anticlockwise direction.

Further, when the blade is switched to the closed state, the gravity center of the balancing weight is located right above the horizontal axis.

Compared with the prior art, the utility model has the beneficial effects that:

according to the exhaust valve, the lifting balancing weight is arranged, when the blades are switched to the open state, the gravity center of the balancing weight is positioned at the upper right of the horizontal axis, at the moment, the balancing weight provides a clockwise rotating force for the blades, namely a rotating force for the blades to open the air outlet, and when the distance between the balancing weight and the horizontal axis is adjusted, the moment of the balancing weight on the blades is changed, so that the opening angle of the blades can be changed under the same wind force.

Drawings

FIG. 1 is a front view of an exhaust valve of the present utility model;

FIG. 2 is a side view of the exhaust valve of the present utility model;

fig. 3 is an enlarged view of the structure of the part a of fig. 2 according to the present utility model.

In the figure: 10. a housing; 20. a blade; 30. balancing weight; 40. a guide rod; 50. a locking screw; 60. a rotating shaft.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 3, the present utility model discloses an exhaust valve, comprising a housing 10, a weight 30 and at least one vane 20; the housing 10 is provided with an air outlet; each blade 20 is rotatably arranged at the air outlet around a horizontal axis corresponding to the blade 20, and can be switched from a closed state of closing the air outlet to an open state of opening the air outlet when rotating clockwise; the vane 20 can be switched to the closed state by rotating under its own weight; the lower end of the vane 20 is positioned at the left lower part of the horizontal axis corresponding to the vane when the vane is in the opened state; each blade 20 is provided with a balancing weight 30 which can rotate along with the blade; the balancing weight 30 can be arranged close to or far away from the horizontal axis in a moving way; when the vane 20 is switched to the open state, the center of gravity of the weight 30 is located above and to the right of its corresponding horizontal axis.

On the basis of the structure, the blades 20 are blown under external wind force to rotate clockwise to a state of opening the air outlet, at the moment, the gravity center of the balancing weights 30 is positioned at the right upper part of the horizontal axis to provide gravity for opening the blades 20, so when the opening angle of the blades 20 needs to be adjusted, the balancing weights 30 are moved towards the direction close to or away from the horizontal axis, for example, the balancing weights 30 are moved towards the direction away from the horizontal axis, the gravity center of the balancing weights 30 is away from the horizontal axis, the force arm of the balancing weights 30 is prolonged, the moment of the balancing weights 30 on the blades 20 is increased, and thus, larger moment is provided for opening the blades 20, and the opening angle of the blades 20 is adjusted, namely the air outlet is adjusted under the same wind force; if the balancing weight 30 is moved to the direction close to the horizontal axis, the opening angle of the blade 20 is reduced, i.e. the air outlet is reduced; when the external wind is turned off, the blade 20 rotates to the closed state under its own weight without additional manipulation.

It is worth integrating that the external wind force mentioned above can be provided by an external fan.

It can be understood that if the number of the blades 20 is one, the opening and closing of the air outlet are controlled by rotating one blade 20; if the number of the blades 20 is at least two, the opening and closing of the air outlet is controlled by the running fit of the at least two blades 20.

The vane 20 of this embodiment is connected with a rotating shaft 60 and is disposed at the air outlet through the rotating shaft 60, and the central axis of the rotating shaft 60 is a horizontal axis, so that the structure is simple and easy to implement.

The horizontal axis of the present embodiment is disposed above the center of gravity of the corresponding blade 20, so that the blade 20 is heavy under the lower part and light under the upper part, and then the blade 20 can be rotated to the closed state under its own weight; specifically, the horizontal axis is disposed at a position of the corresponding blade 20 one third of the height from the tip end face thereof.

The vane 20 of the present embodiment is provided with a guide bar 40; the balancing weight 30 is arranged on the guide rod 40 and can move under the guide of the guide rod 40, namely, the balancing weight 30 approaches to or away from the horizontal axis under the guide of the guide rod 40; the embodiment further comprises a locking screw, wherein the locking screw is used for locking the balancing weight 30 on the guide rod 40, so that the balancing weight 30 can be locked or the balancing weight 30 can be locked by rotating the locking screw, and the structure is simple, and the operation is convenient.

It should be noted that the guide rod 40 is disposed on the rotating shaft 60.

Specifically, the weight 30 is sleeved outside the guide rod 40 so as to be movable under the guide of the guide rod 40.

In other embodiments, the balancing weight 30 is provided with a through hole, the guide rod 40 is provided with a plurality of screw holes sequentially arranged along the extending direction of the guide rod, and the rod part of the locking screw 50 passes through the through hole and is in threaded connection with any screw hole, however, the mode ensures that the movement distance of the balancing weight 30 is a fixed value; the balancing weight 30 of the embodiment is provided with a locking screw hole; the rod part of the locking screw 50 passes through the locking screw hole, and the balancing weight 30 is abutted against the guide rod 40 by the head part of the locking screw 50; at this time, the adjusting distance of the balancing weight 30 is flexible and the use is more flexible.

In order to realize that the blade 20 can be opened only in one direction, the outer frame is also provided with a limiting piece for example; the limiting member is used for abutting against the vane 20 when the vane 20 is switched to the closed state, so as to prevent the vane 20 from continuing to rotate in the counterclockwise direction.

Specifically, when the vane 20 is switched to the closed state, the center of gravity of the weight 30 is located directly above the horizontal axis, and at this time, the weight 30 does not provide a force to move the vane 20 in the opening direction.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims

1. A venting valve, characterized by comprising a housing (10) and at least one vane (20), wherein:

an air outlet is formed in the shell (10);

each blade (20) is rotatably arranged at the air outlet around a horizontal axis corresponding to the blade, and can be switched from a closing state for closing the air outlet to an opening state for opening the air outlet when rotating clockwise; the vane (20) can be switched to the closed state by rotating under the self weight of the vane; the lower end of the blade (20) is positioned at the left lower part of the horizontal axis corresponding to the blade when the blade is in the open state;

each blade (20) is provided with a balancing weight (30) capable of rotating along with the blade, and the balancing weights (30) can be arranged close to or far away from the horizontal axis in a moving way; when the vane (20) is switched to the open state, the gravity center of the balancing weight (30) is positioned at the upper right of the horizontal axis corresponding to the gravity center.

2. The exhaust valve according to claim 1, characterized in that the vane (20) is connected with a rotating shaft (60) and is arranged at the air outlet through the rotating shaft (60); the central axis of the rotating shaft (60) is the horizontal axis.

3. A discharge valve according to claim 1, wherein the horizontal axis is arranged above the centre of gravity of the respective vane (20).

4. The venting valve according to any one of claims 1-2, further comprising a locking screw (50); a guide rod (40) is arranged on the blade (20); the balancing weight (30) is arranged on the guide rod (40) and can move under the guide of the guide rod (40); the locking screw (50) is used for locking the balancing weight (30) on the guide rod (40).

5. The exhaust valve according to claim 4, characterized in that the balancing weight (30) is sleeved outside the guide rod (40).

6. The exhaust valve according to claim 5, characterized in that the balancing weight (30) is provided with a locking screw hole; the rod part of the locking screw (50) passes through the locking screw hole, and the balancing weight (30) is abutted against the guide rod (40) by the head part of the locking screw (50).

7. The exhaust valve according to claim 1, characterized in that the housing (10) is further provided with a stop member; the limiting piece is used for abutting against the blade (20) when the blade (20) is switched to the closed state so as to prevent the blade (20) from continuing to rotate in the anticlockwise direction.

8. The exhaust valve according to claim 1, characterized in that the centre of gravity of the counterweight (30) is located directly above the horizontal axis when the vane (20) is switched to the closed state.