CN221075279U - Large-scale flue valve - Google Patents

Abstract

A large-scale flue valve comprises a valve body, a valve plate and a rocker arm; the valve body is of a straight cylindrical structure, two semicircular valve plates are arranged in the valve body, and the two valve plates are symmetrically arranged; a rotating shaft which is correspondingly vertical to the flat side of the valve plate is arranged in the middle of the valve plate body; one end of the two rotating shafts, which is opposite, is correspondingly connected in a rotating way, and the other ends of the two rotating shafts movably penetrate through the valve body and are connected in a rotating way with the valve body; one end of the rotating shaft extending out of the valve body is fixedly connected with a rocker arm for driving the rotating shaft to rotate; the two valve plates are independent and are controlled by the two cylinders respectively, so that the control is flexible and the response speed is high; when the two valve plates are opened or closed, the two valve plates synchronously rotate reversely, and when the valve plates are not completely opened or not completely closed, smoke circulates from a staggered gap between the two valve plates, so that the impact force of the smoke on the valve plates is reduced, and the overall service life is prolonged.

Description

Large-scale flue valve

Technical Field

The utility model relates to the technical field of flue valves, in particular to a large-scale flue valve.

Background

The aluminum-titanium alloy smelting workshop is internally provided with a butterfly-shaped flue valve in a general way, and when a slag skimming and refining furnace or a furnace door is opened, the furnace door flue valve is required to be opened to pump away smoke dust; when the furnace door is closed, the flue valve needs to be closed so as to reduce the load of the dust remover; because the smoke quantity in the workshop is larger, the diameter of the required flue valve and the valve plate thereof is larger, the impact of smoke in the pipeline to the valve plate is larger when the flue valve is closed, the frequent opening and closing of the flue valve easily causes quicker abrasion and even disconnection of the rotating shaft of the valve plate, the normal operation of the dust remover is influenced, and the environmental problems such as unorganized emission and the like are caused; therefore, those skilled in the art are urgent to develop a large-sized flue valve capable of reducing the impact of flue gas in a pipeline on a valve plate when the valve plate is about to be closed;

Chinese patent (bulletin number: CN 116045006A) discloses an air valve for a ventilating duct and a production process thereof; the patent comprises a valve body, wherein a gear box is fixed in the middle of the valve body, a plurality of blades are connected between the gear box and the valve body, a rotating shaft is fixed at the outer ends of the blades, a turbine worm is arranged on the outer ring of the valve body and connected with the rotating shaft at the tail end of one blade, the blades comprise a central shaft, a blade main body, a sealing piece and bevel gears, the central shaft is arranged in the middle of the blade main body, the rotating shaft and the bevel gears are respectively connected at the two ends of the central shaft, and a supporting shaft is arranged in the gear box in a penetrating manner; the valve plate is divided into a plurality of blades, so that the flow direction of air flow can be changed when the blades are about to be closed, and the impact force of the air flow on the blades is reduced; but the patent has a complex connection structure and is not applicable to high-temperature flue gas pipelines.

Disclosure of utility model

In order to overcome the defects in the background art, the utility model discloses a large flue valve.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:

A large-scale flue valve comprises a valve body, a valve plate and a rocker arm; the valve body is of a straight cylindrical structure, two semicircular valve plates are arranged in the valve body, and the two valve plates are symmetrically arranged; a rotating shaft which is correspondingly vertical to the flat side of the valve plate is arranged in the middle of the valve plate body; one end of the two rotating shafts, which is opposite, is correspondingly connected in a rotating way, and the other ends of the two rotating shafts movably penetrate through the valve body and are connected in a rotating way with the valve body; one end of the rotating shaft extending out of the valve body is fixedly connected with a rocker arm for driving the rotating shaft to rotate.

Preferably, the rocker arm is in a right-angle bending structure.

Preferably, the bent edges of the two rocker arms face opposite directions.

Preferably, a limit column for limiting the opening and closing states of the valve plate is arranged at the position, close to the rocker arm, of the valve body.

Preferably, one end of the two rotating shafts opposite to each other is provided with a rotary connecting device, the rotary connecting device comprises a rotary sleeve coaxially and fixedly connected with one rotating shaft, and a step shaft coaxially and fixedly connected with the other rotating shaft, and the small end of the step shaft is rotatably connected with the rotary sleeve.

Preferably, the graphite sleeve is coaxially embedded in the rotary sleeve, and the small end of the step shaft is rotationally connected with the graphite sleeve.

Preferably, the two ends of the valve body are provided with connecting flanges.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

The large flue valve disclosed by the utility model is simple in structure and easy to assemble, two semicircular valve plates are arranged in the valve body and are symmetrically arranged, the two valve plates are independent and controlled by two cylinders respectively, so that the control is flexible and the response speed is high; when the two valve plates are opened or closed, the two valve plates synchronously rotate reversely, and when the valve plates are not completely opened or not completely closed, smoke circulates from a staggered gap between the two valve plates, so that the impact force of the smoke on the valve plates is reduced, and the overall service life is prolonged;

The opposite ends of the two rotating shafts are provided with rotary connecting devices, and the rotary connecting devices comprise rotary sleeves coaxially and fixedly connected with one rotating shaft and step shafts coaxially and fixedly connected with the other rotating shaft, so that the connecting strength of the two rotating shafts can be effectively ensured; the graphite sleeve is coaxially embedded in the rotary sleeve, the small head end of the step shaft is rotationally connected with the graphite sleeve, the graphite sleeve has good high temperature resistance and wear resistance, the rotary shaft can be prevented from being accidentally stuck due to deformation caused by high-temperature smoke in the valve body, and the reliability is effectively improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view showing a state in which a valve plate is fully opened;

FIG. 3 is a schematic view showing a state in which a valve plate is completely closed;

FIG. 4 is a schematic view of the rocker arm in a fully open valve plate condition;

FIG. 5 is a schematic view showing a state of the rocker arm when the valve plate is fully closed

Fig. 6 is a schematic structural view of the rotary joint device.

In the figure: 1. a valve body; 2. a valve plate; 3. a rocker arm; 4. a rotating shaft; 5. a limit column; 6. a rotating sleeve; 7. a step shaft; 8. and (5) a graphite sleeve.

Detailed Description

The present utility model will be explained in detail by the following examples, and the purpose of the present utility model is to protect all technical improvements within the scope of the present utility model, and in the description of the present utility model, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., only correspond to the drawings of the present utility model, and in order to facilitate description of the present utility model, it is not necessary to indicate or imply that the apparatus or element referred to has a specific orientation.

Embodiment 1, with reference to fig. 1, a large flue valve comprises a valve body 1, a valve plate 2 and a rocker arm 3; the valve body 1 is in a straight cylindrical structure, two semicircular valve plates 2 are arranged in the valve body 1, the two valve plates 2 are symmetrically arranged, and the two valve plates 2 are independent; a rotating shaft 4 which is vertical to the flat side of the valve plate 2 is arranged in the middle of the valve plate 2; one end of the two rotating shafts 4 opposite to each other is correspondingly connected in a rotating way, and the other ends of the two rotating shafts 4 movably penetrate through the valve body 1 and are connected in a rotating way with the valve body 1; one end of the rotating shaft 4 extending out of the valve body 1 is fixedly connected with a rocker arm 3 for driving the rotating shaft 4 to rotate;

According to the working principle, connecting flanges are arranged at two ends of the valve body 1, so that the two ends of the valve body 1 are communicated with a flue gas pipeline through the flanges, a telescopic cylinder can be arranged at a position, close to the rocker arm 3, of the valve body 1, one end of the telescopic cylinder is hinged with the rocker arm 3, the other end of the telescopic cylinder is hinged with the valve body 1, deflection of the rocker arm 3 is controlled through extension or shortening of the telescopic cylinder, and the rocker arm 3 drives a rotating shaft 4 to drive the valve plate 2 to rotate, so that opening or closing of a channel of the valve body 1 is realized; the two valve plates 2 are independent and are controlled by two cylinders respectively, so that the control is flexible and the response speed is high; when the two valve plates 2 are opened or closed, the two valve plates 2 synchronously rotate reversely, and when the valve plates 2 are not completely opened or not completely closed, flue gas circulates from a staggered gap between the two valve plates 2, so that the impact force of the flue gas on the valve plates 2 is reduced, and the overall service life is prolonged.

The embodiment 2, with reference to fig. 1-5, is different from embodiment 1 in that, on the basis of embodiment 1, the rocker arms 3 are in right-angle bending structures, so as to be conveniently hinged with the telescopic cylinders, and the bending edges of the two rocker arms 3 face opposite directions, so that the opening directions of the two valve plates 2 can be conveniently distinguished;

the valve body 1 valve body is close to the spacing post 5 that is used for restricting valve plate 2 to open and closed state that is equipped with in the position that the rocking arm 3 shaft homoenergetic is spacing through spacing post 5 when rocking arm 3 is vertical or horizontal promptly, and rocking arm 3 deflects 90 degrees and can drive valve plate 2 and open and close completely, and it is excessive to limit through spacing post 5 can avoid rocking arm 3 to deflect, leads to the unexpected card of rocking arm 3 to die.

In the embodiment 3, referring to fig. 1 to 6, a large flue valve is provided, on the basis of embodiment 1 or 2, opposite ends of two rotating shafts 4 are provided with a rotary connection device, the rotary connection device comprises a rotary sleeve 6 coaxially and fixedly connected with one rotating shaft 4, and a step shaft 7 coaxially and fixedly connected with the other rotating shaft 4, and a small end of the step shaft 7 is rotatably connected with the rotary sleeve 6, so that the connection strength of the two rotating shafts 4 can be effectively ensured; the graphite sleeve 8 is coaxially embedded in the rotary sleeve 6, the small end of the step shaft 7 is rotationally connected with the graphite sleeve 8, the graphite sleeve 8 has good high temperature resistance and wear resistance, the rotary shaft 4 can be prevented from being deformed and accidentally blocked due to the influence of high temperature smoke in the valve body 1, and the reliability is effectively improved.

The utility model has not been described in detail in the prior art, and it is apparent to those skilled in the art that the utility model is not limited to the details of the above-described exemplary embodiments, but that the utility model can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and range of equivalency are intended to be embraced therein.

Claims (7)

1. A large-scale flue valve, characterized by: comprises a valve body (1), a valve plate (2) and a rocker arm (3); the valve body (1) is of a straight cylindrical structure, two semicircular valve plates (2) are arranged in the valve body (1), and the two valve plates (2) are symmetrically arranged; a rotating shaft (4) which is vertical to the flat side of the valve plate (2) is arranged in the middle of the valve plate (2); one end of the two rotating shafts (4) opposite to each other is correspondingly connected in a rotating way, and the other ends of the two rotating shafts (4) movably penetrate through the valve body (1) and are connected in a rotating way with the valve body (1); one end of the rotating shaft (4) extending out of the valve body (1) is fixedly connected with a rocker arm (3) for driving the rotating shaft (4) to rotate.

2. The large flue valve of claim 1 wherein: the rocker arm (3) is of a right-angle bending structure.

3. The large flue valve of claim 2 wherein: the bending edges of the two rocker arms (3) face opposite directions.

4. The large flue valve of claim 1 wherein: the valve body (1) is provided with a limit column (5) for limiting the opening and closing states of the valve plate (2) at the position, close to the rocker arm (3), of the valve body.

5. The large flue valve of claim 1 wherein: the opposite ends of the two rotating shafts (4) are provided with rotary connecting devices, each rotary connecting device comprises a rotary sleeve (6) coaxially and fixedly connected with one rotating shaft (4), and a step shaft (7) coaxially and fixedly connected with the other rotating shaft (4), and the small end of each step shaft (7) is rotatably connected with the rotary sleeve (6).

6. The large flue valve of claim 5 wherein: the graphite sleeve (8) is coaxially embedded in the rotary sleeve (6), and the small end of the step shaft (7) is rotationally connected with the graphite sleeve (8).

7. The large flue valve of claim 1 wherein: connecting flanges are arranged at two ends of the valve body (1).