Opening and closing structure of exhaust valve

Abstract

The utility model relates to an opening and closing structure of an exhaust valve, the exhaust valve is a cup cover type exhaust valve, the opening and closing structure is characterized by comprising a hanging spring, a rotating wheel, a rotating shaft and a rotary cylinder, the rotating wheel is fixed on the rotating shaft, one end of the hanging spring is wound on the rotating wheel, and the other end of the hanging spring is fixed on the rotating shaft. The other end of the rotating shaft vertically droops and is fixed to the upper top of the exhaust valve under the rotating shaft, and the rotating shaft serves as an output shaft of the rotating air cylinder and is fixed to the rotating air cylinder. According to the opening and closing structure of the exhaust valve, the position of the rotating shaft is not changed, the size of the rotating wheel is not changed, only the telescopic air cylinder is replaced with the rotary air cylinder, the eccentric phenomenon cannot occur after transformation, the lifting height of the exhaust valve is 180 mm, the lifting height is doubled, exhaust of the homogenizing furnace is smooth, and rapid cooling of the homogenizing furnace in the later period is achieved.

Description

Technical Field

[0001] The utility model relates to the field of glass deep processing, in particular to an opening and closing structure of an exhaust valve of a homogenizing furnace. Background Art

[0002] The main purpose of tempering glass by homogenization treatment is to reduce the self - explosion rate of tempered glass. The process of homogenization treatment of tempered glass includes three stages: heating, heat preservation, and cooling, which is similar to the process of tempering the original sheet. The homogenization treatment of tempered glass is carried out in a homogenizing furnace. During the heating and heat - preservation stages, multiple exhaust ports on the top of the homogenizing furnace are closed, while during the cooling stage, the exhaust ports must be opened to facilitate the cooling of the homogenizing furnace. In the prior art, the opening of the cup - type exhaust valve on the exhaust port is controlled by a telescopic cylinder. As Figure 1 、 Figure 2 described, there are several exhaust ports on the top of the homogenizing furnace, and a cup - type exhaust valve 1 is covered on the exhaust port. The opening and closing structure of the exhaust valve is actually the lifting mechanism of the exhaust valve: the lifting mechanism includes a rotating plate 5, a suspension wire 2, a rotating shaft 4, a rotating wheel 3, and a telescopic cylinder 6. One end of several rotating plates 5 is vertically fixed on the outer surface of the upper side of the horizontal rotating shaft 4, and the other end is vertically connected to the telescopic cylinder 6. The telescopic rod of the telescopic cylinder 6 is in the horizontal direction; several rotating wheels 3 are fixed on the rotating shaft 4. One end of the suspension wire 2 is wound around the rotating wheel 3, and the other end hangs vertically and is fixed on the top of the exhaust valve 1 directly below; when the telescopic cylinder 6 extends horizontally forward, it pushes the rotating plate 3 to rotate around the axis of the rotating shaft 4, thereby driving the rotating wheel 3 to rotate, and the suspension wire 2 is wound around the rotating wheel 3, thus lifting the exhaust valve 1 and opening the exhaust port; on the contrary, when the telescopic cylinder 6 contracts backward, it pulls the rotating plate 5 to rotate around the axis of the rotating shaft 4, thereby driving the rotating wheel 3 to rotate, and part of the wound suspension wire 2 is released by the rotating wheel 3, thus lowering the exhaust valve 1 to cover the exhaust port and completing the closing action of the exhaust port. Although the stroke of the telescopic cylinder can be designed longer as needed, due to the limitation of the position of the rotating shaft, its rotation angle cannot exceed 90 degrees. Therefore, the lifting height is less than 1 / 4 of the circumference of the rotating wheel. The circumference of the rotating wheel is 360 mm, and the actual lifting height measured is only 75 mm. The height of the exhaust valve lifted is insufficient, resulting in poor exhaust of the exhaust port and slow cooling. To increase the lifting height, the easiest solution is to increase the diameter of the rotating wheel. However, due to the limited space between the rotating wheel and the exhaust valve, when the diameter of the rotating wheel increases, the distance between the bottom of the rotating wheel and the exhaust valve is shorter, and the lifting height is limited; moreover, after the rotating wheel increases, the connection between the suspension wire hanging down from the side of the rotating wheel and the original fixed point of the exhaust valve is eccentric, deviating from the vertical direction, and cannot ensure accurate opening and closing. If the normal opening and closing of the exhaust valve are to be ensured, the position of the rotating shaft needs to be moved and calibrated, and this solution is relatively complex to implement. Summary of the Utility Model

[0003] The present utility model provides an opening and closing structure for an exhaust valve, which does not require moving and aligning the position of the rotating shaft, and can increase the lifting height to ensure smooth exhaust at the exhaust port.

[0004] An opening and closing structure for an exhaust valve, wherein the exhaust valve is a cup cover type exhaust valve, and is characterized in that: the opening and closing structure includes a hanging wire, a rotating wheel, a rotating shaft and a rotary cylinder, the rotating wheel is fixed on the rotating shaft, one end of the hanging wire is wound around the rotating wheel, and the other end hangs vertically and is fixed to the upper top of the exhaust valve directly below, and the rotating shaft is fixed on the rotary cylinder as the output shaft of the rotary cylinder.

[0005] The rotary cylinder is a gear rack rotary cylinder, a plurality of rotating wheels are fixed on the rotating shaft, and the rotating shaft passes through the output shaft interface of the rotary cylinder and is fixedly connected with the output shaft interface in a clamping manner.

[0006] The present utility model removes the original telescopic cylinder and the rotating plate that forms a rotation angle in cooperation with it, replaces the telescopic cylinder with a rotary cylinder, uses the rotating shaft as the output shaft of the rotary cylinder, and selects the rotation angle of the rotary cylinder according to the distance from the bottom of the rotating wheel to the top of the exhaust valve and the required lifting height. The rotary cylinder is a pneumatic actuator that uses compressed air to drive the output shaft to make a reciprocating rotary motion within a certain angle range. The reciprocating rotation of the rotary cylinder causes the exhaust valve to rise and fall through the rotating shaft and the hanging wire, thereby realizing the opening of the exhaust valve.

[0007] In the present utility model, the position of the rotating shaft remains unchanged and the size of the rotating wheel remains unchanged, and no eccentric phenomenon will occur after the transformation, and the operation is simple. Description of the Drawings

[0008] Figure 1 is a front view schematic diagram of the opening and closing structure of the exhaust valve in the prior art,

[0009] Figure 2 is a left view schematic diagram of the opening and closing structure of the exhaust valve in the prior art,

[0010] Figure 3 is a front view schematic diagram of the opening and closing structure of the exhaust valve of the present utility model,

[0011] Figure 4 is a left view schematic diagram of the opening and closing structure of the exhaust valve of the present utility model,

[0012] The reference numerals in the drawings are listed as follows: 1 - exhaust valve, 2 - hanging wire, 3 - rotating wheel, 4 - rotating shaft, 5 - rotating plate, 6 - telescopic cylinder, 7 - rotary cylinder. Detailed Description of the Preferred Embodiment

[0013] Rack and pinion rotary cylinder; model: QGK80*180 (cylinder diameter 80mm, rotary angle 180°), purchased from "Yantai Jinma Pneumatic and Hydraulic Components Co., Ltd.".

[0014] The following further describes the present utility model in detail with reference to the drawings.

[0015] As Figure 3 、 Figure 4 shown, the opening and closing structure of the exhaust valve. The exhaust valve is a cup cover type exhaust valve 1. The opening and closing structure includes a suspension wire 2, a rotating wheel 3, a rotating shaft 4 and a rotary cylinder 7. The rotating wheel 3 is fixed on the rotating shaft 4. One end of the suspension wire 2 is wound around the rotating wheel 3, and the other end hangs vertically and is fixed to the upper top of the exhaust valve 1 directly below. The rotating shaft 4 is fixed on the rotary cylinder as the output shaft of the rotary cylinder 7.

[0016] There are 4 rotating wheels 3 fixed on the rotating shaft 4. The rotating shaft 4 passes through the output shaft interface of the rotary cylinder 7 and is fixedly clamped with the output shaft interface.

[0017] The original telescopic cylinder and the rotating plate that forms the rotation angle with it in the present utility model are removed. The telescopic cylinder is replaced with a rotary cylinder. The rotating shaft is used as the output shaft of the rotary cylinder. The rotation angle of the rotary cylinder is selected according to the distance from the bottom of the rotating wheel to the top of the exhaust valve and the required lifting height. The reciprocating rotation of the rotary cylinder makes the exhaust valve rise and fall through the rotating shaft and the suspension wire, thereby realizing the opening of the exhaust valve. One rotary cylinder of the present utility model controls the opening and closing of four exhaust valves.

[0018] For the opening and closing structure of the exhaust valve of the present utility model, the position of the rotating shaft remains unchanged and the size of the rotating wheel remains unchanged. Only the telescopic cylinder is replaced with a rotary cylinder. After the transformation, no eccentric phenomenon will occur, and the lifting height of the exhaust valve is 180mm, which is more than doubled. The exhaust of the homogenizing furnace is smooth, and the rapid cooling of the homogenizing furnace in the later stage is realized.

Claims

1. Opening and closing structure of an exhaust valve, the exhaust valve being a cup cover type exhaust valve, characterized in that: The opening and closing structure includes a suspension wire, a rotating wheel, a rotating shaft and a rotary cylinder. The rotating wheel is fixed on the rotating shaft. One end of the suspension wire is wound around the rotating wheel, and the other end hangs vertically and is fixed to the upper top of the exhaust valve directly below. The rotating shaft is fixed on the rotary cylinder as the output shaft of the rotary cylinder.

2. The opening and closing structure of the exhaust valve according to claim 1, characterized in that: A plurality of rotating wheels are fixed on the rotating shaft. The rotating shaft passes through the output shaft interface of the rotary cylinder and is fixedly connected to the output shaft interface in a clamped manner.

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