Efficient cooling and homogenizing device for LCD glass substrate production line

Abstract

The utility model relates to the technical field of LCD (Liquid Crystal Display) glass substrate production, in particular to an efficient cooling and homogenizing device for an LCD glass substrate production line, which comprises an annealing kiln main body, a homogenizing component and a preheating component, the homogenizing assembly is connected to the annealing kiln main body, the homogenizing assembly comprises a Venturi tube and a flow guide part, and the Venturi tube is connected to the annealing kiln main body and communicates with a feeding port of the annealing kiln main body. According to the annealing furnace disclosed by the utility model, external cold air entering the annealing furnace main body along with a glass tape can be reduced through the venturi tube, and air passing through the venturi tube can be guided to the top of the annealing furnace main body through the flow guide piece in the homogenizing assembly; the preheating assembly enables part of hot air in the annealing kiln body to flow back into the Venturi tube to be mixed with cold air of the feeding port, and the situation that the local temperature in the annealing kiln body is reduced due to the fact that cold air enters the annealing kiln body is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of LCD glass substrate production, specifically relates to a high -efficient cooling homogenizing device for LCD glass substrate production line. BACKGROUND

[0002] LCD glass substrate is one of the core components of liquid crystal display (LCD), refers to the ultra -thin, high -precision glass panel for bearing liquid crystal material and electronic component, LCD usually is composed of two glass substrates, the middle is sandwiched liquid crystal layer. The substrate is the basic framework, supports the structure of the whole display panel.

[0003] The thermal equipment used for glass annealing is called annealing furnace, which can be classified according to the movement of the product, heat source and heating method. According to the movement of the product, the annealing furnace can be divided into three types: intermittent, semi-continuous and continuous. According to the heat source, the annealing furnace can be divided into four types: gas-fired annealing furnace, oil-fired annealing furnace, coal-fired annealing furnace and electric annealing furnace. According to the heating method, the annealing furnace can be divided into two types: open flame and flame.

[0004] The Chinese patent with publication number CN220867284U discloses a glass annealing equipment, which includes a foot pad, an annealing furnace is welded on the foot pad, an inlet is formed in the front wall of the annealing furnace, a heating plate is installed in the placing groove, an air suction box is fixedly installed on the inner wall of the annealing furnace, an air inlet is formed in the side wall of the air suction box, a gas pump is installed on the outer wall of the annealing furnace through a machine base, a gas guide pipe is connected to the gas pump, the other end of the gas guide pipe is connected to the air suction box. Through the operation of the gas pump, the gas in the air suction box is pumped out, so that the inside of the air suction box is instantaneously vacuumized. Under the action of the pressure difference, the gas in the annealing furnace enters the air suction box from the air inlet, and is then discharged by the gas pump. The air suction box is located at the middle and low positions of the annealing furnace, so the cold air in the annealing furnace is extracted first, the discharge of the cold air in the annealing furnace is realized, the uneven heating of the glass products is avoided, and the annealing effect of the glass products is improved.

[0005] However, in the above technical solution, only the glass products are conveyed to a high place by the conveyor belt to avoid the cold air at a lower position to achieve uniform cooling effect. However, when producing a glass ribbon by the float process, the glass ribbon cannot be conveyed by this method. UTILITY MODEL CONTENTS

[0006] The utility model aims at the problems in the background art and provides a high -efficient cooling homogenizing device for LCD glass substrate production line.

[0007] The utility model discloses a technical scheme: a high -efficient cooling homogenizing device for LCD glass substrate production line, including annealing furnace main part, its installation has a plurality of parallelly arranged conveying roller, and the both ends of annealing furnace main part are inlet and outlet respectively, homogenization subassembly is connected on annealing furnace main part, and homogenization subassembly includes venturi and flow guide piece, and venturi is connected on annealing furnace main part, and venturi communicates with the inlet of annealing furnace main part, and flow guide piece is connected on venturi, and flow guide piece is composed of mounting strip, support shaft and flow guide plate, and a plurality of support shafts are connected mounting strip on both ends, and mounting strip is detachably connected with venturi, and support shaft has multilayer distribution from top to bottom, and flow guide plate is connected on support shaft, under homogenization subassembly use state, external cold air is guided and contacted with flow guide piece through venturi, and a plurality of flow guide plates guide cold air to the top of annealing furnace main part and make it far away from glass band, preheating subassembly is connected on annealing furnace main part, under preheating subassembly use state, preheating subassembly mixes the backflow of hot air in annealing furnace main part with the cold air of inlet.

[0008] Preferably, the venturi is composed of a converging plate, a throat plate and a diffuser plate, the two ends of the throat plate are connected with the converging plate and the diffuser plate respectively, and the flow guide plate is connected with the throat plate.

[0009] Preferably, the homogenization subassembly further comprises a ratchet wheel connected with any one end of the support shaft, a receiving groove for accommodating the ratchet wheel is formed in the mounting strip, a limiting ring is sleeved outside the ratchet wheel and arranged in the receiving groove, a first elastic member is sleeved outside the ratchet wheel and connected with the limiting ring and the receiving groove at both ends, and a pawl is rotatably connected with the limiting ring and engaged with the ratchet wheel.

[0010] Preferably, a scale is connected with the limiting ring.

[0011] Preferably, the multiple flow guide plates gradually increase in angle from the converging plate to the diffuser plate and have a gradient structure.

[0012] Preferably, the converging plate of the venturi has an included angle of 12°, and the diffuser plate has an included angle of 6°.

[0013] Preferably, the preheating subassembly comprises a fan connected with the annealing furnace main part, a backflow pipe and an air outlet pipe are connected with the air inlet and the air outlet of the fan respectively, and the backflow pipe communicates with the annealing furnace main part; a shunt pipe is connected with the converging plate of the venturi, the shunt pipe communicates with the air outlet pipe, and a plurality of nozzles are connected with the shunt pipe.

[0014] Compared with the prior art, the above technical scheme of the utility model has the following beneficial technical effects:

[0015] The utility model discloses a venturi pipe can reduce the outside cold air with glass band into the annealing furnace main body, through the air of guiding piece in homogenizing subassembly can be guided to the annealing furnace main body top through the venturi pipe and avoid cold air directly impacting glass plate to cause warping and cracking, simultaneously, the preheating subassembly that is arranged will the hot air in the annealing furnace main body reflow into the venturi pipe and mix with the cold air of inlet, avoid the lower temperature air to enter and reduce the local temperature in the annealing furnace main body, reduce the influence of cold air to glass production through multiple ways. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the perspective drawing of the utility model;

[0017] Figure 2 It is Figure 1 The sectional view schematic drawing of;

[0018] Figure 3 It is the sectional view structure schematic drawing of guiding piece;

[0019] Figure 4 It is Figure 3 The structure enlarged view of A of;

[0020] Fig. 1, annealing furnace main body; 2, conveying roller; 3, inlet; 4, outlet; 5, venturi pipe; 6, guiding piece; 7, installation strip; 8, support shaft; 9, guide plate; 10, contraction plate; 11, throat plate; 12, diffusion plate; 13, ratchet; 14, containing groove; 15, limit ring; 16, first elastic part; 17, pawl; 18, scale; 19, fan; 20, backflow pipe; 21, air outlet pipe; 22, shunt pipe; 23, spray head. DETAILED DESCRIPTION

[0021] Example one

[0022] As Figures 1-4 The utility model discloses a kind of high-efficiency cooling homogenizing devices for LCD glass substrate production line, including annealing furnace main body 1, homogenizing subassembly and preheating component, annealing furnace main body 1 installs multiple parallelly arranged conveying roller 2, annealing furnace main body 1 two ends are inlet 3 and outlet 4 respectively, homogenizing subassembly is connected on annealing furnace main body 1, homogenizing subassembly includes venturi pipe 5 and guiding piece 6, venturi pipe 5 is connected on annealing furnace main body 1;

[0023] In an alternative embodiment, venturi pipe 5 is composed of contraction plate 10, throat plate 11 and diffusion plate 12, the two ends of throat plate 11 are connected with contraction plate 10 and diffusion plate 12 respectively, guide plate 9 is connected on throat plate 11;

[0024] The Venturi tube 5 is communicated with the feeding port 3 of the annealing furnace main body 1, the flow guide 6 is connected on the Venturi tube 5, the flow guide 6 is composed of the mounting strip 7, the support shaft 8 and the flow guide plate 9, a plurality of support shafts 8 are connected with the mounting strip 7 at both ends, the mounting strip 7 is detachably connected with the Venturi tube 5, the support shaft 8 is distributed with multiple layers from top to bottom, and the flow guide plate 9 is connected on the support shaft 8; in the using state of the homogenizing assembly, the external cold air is guided to contact with the flow guide 6 through the Venturi tube 5, and the cold air is guided to the top of the annealing furnace main body 1 by the multiple flow guide plates 9 so as to be far away from the glass belt; the preheating assembly is connected on the annealing furnace main body 1; in the using state of the preheating assembly, the preheating assembly mixes the cold air of the feeding port with the hot air reflux in the annealing furnace main body.

[0025] Embodiment two

[0026] As Figures 2-4 Embodiment two, the detailed structure of the homogenizing assembly is recorded in the embodiment, the homogenizing assembly further comprises a ratchet wheel 13, a limiting ring 15, a first elastic member 16 and a pawl 17, the ratchet wheel 13 is connected at any one end of the support shaft 8, the mounting strip 7 is provided with a containing groove 14 for containing the ratchet wheel 13, the limiting ring 15 is sleeved outside the ratchet wheel 13, the limiting ring 15 is arranged in the containing groove 14, the first elastic member 16 is sleeved outside the ratchet wheel 13, and the two ends of the first elastic member 16 are connected with the limiting ring 15 and the containing groove 14 respectively; the first elastic member 16 is selected from but not limited to a spring; the pawl 17 is rotatably connected on the limiting ring 15, and the pawl 17 is engaged with the ratchet wheel 13.

[0027] In an optional embodiment, a scale 18 is connected on the limiting ring 15; the scale 18 is used for observing the current angle of the flow guide plate 9;

[0028] In an optional embodiment, the multiple flow guide plates 9 gradually increase in angle from the contraction plate 10 to the diffusion plate 12 in a gradient structure; the structure can gradually and smoothly guide the airflow, and reduce the noise and turbulence generated by the airflow;

[0029] In an optional embodiment, the included angle of the contraction plate 10 of the Venturi tube 5 is 12°, and the included angle of the diffusion plate 12 is 6°; the angle can accurately guide and control the airflow, and reduce the influence of the airflow on the glass.

[0030] Embodiment three

[0031] As Figures 1-2Compared with the embodiment two, the detailed structure of the preheating assembly is recorded in the embodiment, the preheating assembly comprises a fan 19, a backflow pipe 20, an air outlet pipe 21, a shunt pipe 22 and a spray head 23, the fan 19 is connected to the annealing furnace main body 1, the air inlet and the air outlet of the fan 19 are connected to the backflow pipe 20 and the air outlet pipe 21 respectively, the backflow pipe 20 is communicated with the annealing furnace main body 1, the shunt pipe 22 is connected to the contraction plate 10 of the Venturi tube 5, the shunt pipe 22 is communicated with the air outlet pipe 21, and a plurality of spray heads 23 are connected to the shunt pipe 22.

[0032] In summary, when the utility model is used, the glass ribbon produced by the float process is conveyed to the conveying roller 2 above the annealing furnace main body 1 by the conveying equipment of the previous process, the glass ribbon keeps moving in this process, the annealing furnace main body 1 anneals the glass ribbon to eliminate stress and gradually reduce the temperature of the glass ribbon, before the glass ribbon enters the annealing furnace main body 1 from the feeding port 3, the glass ribbon will enter the Venturi tube 5, and cold air will enter the Venturi tube 5 together with the glass ribbon, at this time, the fan 19 starts to extract hot air in the annealing furnace main body 1, so that the hot air gradually enters the air outlet pipe 21 from the backflow pipe 20, the hot air enters the shunt pipe 22 from the air outlet pipe 21, and then is sprayed into the plurality of spray heads 23 through the shunt pipe 22, the sprayed hot air is mixed with the cold air and then enters the Venturi tube 5, and according to the Venturi effect, the mass flow through any cross section per unit time is equal when the fluid flows in the pipeline, when the fluid flows through the narrowest part of the pipeline, i.e. the position of the throat plate 11, the flow rate reaches the maximum value, at this time, the airflow contacts the guide plate 9, the guide plates 9 distributed in multiple layers contact the airflow, the inclination angles of the plurality of guide plates 9 gradually increase from the contraction plate 10 to the diffusion plate 12 (i.e. from the contraction section to the diffusion section), the guide plate 9 guides the cold air mixed with the hot air, which is relatively heavy, upwards, so as to prevent the cold air from entering the annealing furnace main body 1 and causing local temperature drop to damage the uniform cooling process of the glass ribbon, the angle of the guide plate 9 can also be adjusted according to different needs, the installation strip 7 can take out a layer of guide plate 9, the pawl 17 is away from the ratchet wheel 13 by extruding the limiting ring 15, so that the support shaft 8 and the guide plate 9 can be rotated to change the angle.

[0033] The embodiment of the utility model is described in detail in combination with the drawings above, but the utility model is not limited to this, various changes can be made within the knowledge range of the technical personnel in the technical field without departing from the purpose of the utility model.

Claims

1. A high-efficiency cooling and homogenization device for an LCD glass substrate production line, characterized in that, include The annealing kiln body (1) is equipped with multiple parallel conveying rollers (2), and the two ends of the annealing kiln body (1) are the feed inlet (3) and the discharge outlet (4); The homogenization component is connected to the annealing furnace body (1). The homogenization component includes a venturi tube (5) and a flow guide (6). The venturi tube (5) is connected to the annealing furnace body (1) and communicates with the feed inlet (3) of the annealing furnace body (1). The flow guide (6) is connected to the venturi tube (5). The flow guide (6) is composed of an installation strip (7), a support shaft (8), and a flow guide plate (9). Multiple support shafts (8) are connected to the installation strip (7) at both ends. The installation strip (7) is detachably connected to the venturi tube (5). The support shaft (8) has multiple layers distributed from top to bottom. The flow guide plate (9) is connected to the support shaft (8). When the homogenization component is in use, the outside cold air is guided by the venturi tube (5) to contact the flow guide (6). Multiple flow guide plates (9) guide the cold air to the top of the annealing furnace body (1) so that it is away from the glass belt. The preheating component is connected to the annealing kiln body (1). When the preheating component is in use, it recirculates the hot air inside the annealing kiln body (1) and mixes it with the cold air at the feed inlet (3).

2. The high-efficiency cooling and homogenization device for an LCD glass substrate production line according to claim 1, characterized in that, The Venturi tube (5) consists of a contraction plate (10), a throat plate (11) and a diffuser plate (12). The two ends of the throat plate (11) are connected to the contraction plate (10) and the diffuser plate (12) respectively, and the guide plate (9) is connected to the throat plate (11).

3. The high-efficiency cooling and homogenization device for an LCD glass substrate production line according to claim 1, characterized in that, The homogenization component also includes A ratchet (13) is connected to either end of the support shaft (8), and a receiving groove (14) for accommodating the ratchet (13) is provided on the mounting strip (7); A limiting ring (15) is sleeved on the outside of the ratchet (13) and the limiting ring (15) is set in the receiving groove (14); The first elastic element (16) is sleeved on the outside of the ratchet (13), and the two ends of the first elastic element (16) are connected to the limiting ring (15) and the receiving groove (14) respectively. Pawl (17) is rotatably connected to limit ring (15) and pawl (17) meshes with ratchet (13).

4. The high-efficiency cooling and homogenization device for an LCD glass substrate production line according to claim 3, characterized in that, A scale (18) is connected to the limiting ring (15).

5. The high-efficiency cooling and homogenization device for an LCD glass substrate production line according to claim 2, characterized in that, Multiple guide plates (9) have a gradually increasing angle from the contraction plate (10) to the diffuser plate (12), forming a gradual structure.

6. The high-efficiency cooling and homogenization device for an LCD glass substrate production line according to claim 2, characterized in that, The angle between the contraction plate (10) and the diffuser plate (12) of the Venturi tube (5) is 12°, and the angle between the contraction plate (10) and the diffuser plate (12) is 6°.

7. The high-efficiency cooling and homogenization device for an LCD glass substrate production line according to claim 1, characterized in that, Preheating components include A blower (19) is connected to the main body (1) of the annealing kiln. The air inlet and outlet of the blower (19) are respectively connected to a return pipe (20) and an air outlet pipe (21). The return pipe (20) is connected to the main body (1) of the annealing kiln. A diversion pipe (22) is connected to the contraction plate (10) of the venturi pipe (5). The diversion pipe (22) is connected to the air outlet pipe (21). Multiple nozzles (23) are connected to the diversion pipe (22).

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