CN203820633U - Convection oven of glass plate heating furnace - Google Patents

Abstract

A convection box for a glass plate heating furnace, comprising a bellows and a convection box cover, the air outlet of the bellows is connected to the air inlet of the convection box cover, and a flow guide device is provided in the bellows to guide the airflow in the box to the air outlet, and the bellows The airflow inside enters the convection box cover through the air outlet of the bellows and the air inlet of the convection box cover, and a diverter device for dispersing and diverting the airflow in the convection box cover is provided in the convection box cover. The utility model can increase the wind pressure in the bellows without increasing the power of the fan, and balance the pressure of the hot air blowing to the glass plate, so that the heating of the glass plate is more uniform.

Description

Convection box for glass plate heating furnace

technical field

The utility model relates to a glass plate heating furnace, in particular to a convection box for the glass plate heating furnace.

Background technique

   No matter the convection box in the prior art is a bellows or a convection box cover connected with the bellows, its internal airflow channel is a whole. When the airflow circulates in such a convection box structure, it will not only cause waste of wind pressure, but also cause Non-uniform heating of the glass sheet ultimately results in additional energy savings and compromises the quality of the finished glass sheet. In order to shorten the heating time of the glass plate in the heating furnace and ensure the uniform heating of the glass plate, the method of increasing the power of the fan is often used in the market to make up for the defects caused by the above structure, but it cannot make up for the energy consumption caused by it. , and even if the fan power is increased, the uniform heating effect of the glass plate is not ideal.

Utility model content

In order to solve the above technical problems, the utility model provides a convection box for a glass plate heating furnace, which can increase the wind pressure in the bellows without increasing the power of the fan, and balance the pressure of the hot air blowing on the glass plate. The plate is heated more evenly.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a convection box for a glass plate heating furnace, including a bellows and a convection box cover, the air outlet of the bellows is connected with the air inlet of the convection box cover, and a There is a diversion device for guiding the airflow in the box to the air outlet, and a diversion device for dispersing the airflow in the convection box cover.

Further, the deflector is composed of one or more deflectors.

Further, the plurality of deflectors are arranged parallel to each other.

Further, the plurality of deflectors are evenly spaced from each other.

Further, the deflector is a plane plate or an arc plate.

Further, the plurality of baffles are arranged symmetrically on both sides of the central line of the air inlet of the convection box cover.

Further, the plurality of baffles are inclined towards the air inlet of the convection box cover.

Further, the included angles between two adjacent partitions are equal.

Further, the partition is a flat plate or a curved plate with one end bent, or a curved plate as a whole.

Beneficial effect:

1. The utility model is provided with a guiding device in the bellows of the convection box for diverting and guiding the airflow in the box, so that the flow of the gas is smoother, and the loss of wind pressure can be effectively reduced without increasing the power of the fan. It can increase the wind pressure by about 10%, thereby improving the convection heating efficiency of the glass plate and saving energy.

2. A diversion device is installed in the convection box cover to ensure that the wind pressure of each part blowing to the glass plate is balanced, so that the air flow is more evenly blown to the surface of the glass plate, which is conducive to achieving uniform heating of the glass plate and ultimately improving the glass plate. production quality.

Description of drawings

Fig. 1 is the use state figure of the utility model.

Fig. 2 is a structural schematic diagram of the utility model.

Figure 3 is a schematic structural view of the bellows.

FIG. 4 is a top view of FIG. 3 .

Fig. 5 is the A-A view of Fig. 2 .

Fig. 6 is another embodiment of the splitting device.

In the figure, 1. Fan, 2. Bellows, 3. Heater, 4. Glass plate conveying roller table, 5. Glass plate, 6. Lower furnace body, 7. Flow box cover, 8. Upper furnace body, 9. Outlet Air outlet, 10, deflector, 11, arc-shaped bent plate at fan end, 12, rear side wall, 13, front side wall, 14, air inlet, 15, partition, 16, arrow, 17, behind the convection box cover Side wall, 18, front side wall of convection box cover.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in the figure, Fig. 1 is a kind of example diagram of installation and use of the utility model. In the figure, the heating furnace has an upper furnace body 8 and a lower furnace body 6, and a glass plate conveying roller table 4 is arranged between the upper furnace body 8 and the lower furnace body 6. The convection box includes a wind box 2 and a convection box cover 7, and the wind box 2 It is connected with the fan 1, and the air outlet of the bellows 2 is connected with the air inlet of the convection box cover 7, and the convection box cover is provided with an air hole towards the glass plate conveying roller table 4. Convection box cover 7 is provided with heater 3, bellows 2 is under the effect of blower fan 1, and the air-flow in bellows 2 enters convection box cover 7 through the air outlet of bellows 2 and the air inlet of flow box cover 7, passes through heater 3 After heating, blow to the glass plate conveying roller table 4 through the air hole of the flow box cover 7, after the glass plate 5 of the glass plate conveying roller table 4 is heated, return the air inlet of the bellows 2 from the outside of the convection box cover 7, so The convection cycle convectively heats the glass sheet 5 .

Fig. 2 is a schematic structural view of the present utility model, that is, a schematic structural view of a convection box composed of the bellows 2 and the convection box cover 7 in Fig. 1 (the convection box in this specific embodiment is a symmetrical structure, so only the part of the left). As shown in Figure 3 and Figure 4, an air outlet 9 opening into the convection box cover is respectively provided at both ends of the air box (because the air box is a symmetrical structure, only one of the air outlets is shown in the figure, and the other air outlet The position of the tuyere can be seen in the example of use shown in Figure 1.) The airflow channel in the bellows is provided with a corner of the air duct for the gas to flow to the air outlet 1. At the corner, the front side wall 13 of the bellows and the rear side wall of the bellows 12 (the front and rear mentioned here have the same meaning as the bottom and top shown in Fig. 4 respectively), there is a guide device for guiding and splitting the flow of gas.

The deflector is preferably a plurality of deflectors 10 parallel to each other and evenly spaced. In this specific embodiment, the deflector 10 has the same shape as the curved curved plate 11 at the end of the fan, and is arranged parallel to the curved curved plate 11 at the end of the fan.

The deflector 10 can only be set to one according to the actual situation, and the deflector 10 can also be of other shapes such as a flat plate; the distance between each other can also be uneven, or even non-parallel, such as forming a square shape between the flat plates Or triangular airflow channels.

The flow guiding device can also be an elbow arranged at the corner of the air duct with the same arc as the arc-shaped bent plate 11 . In short, as long as it can guide and divert the flow of gas, it is within the scope of the present concept.

The air guide device can be arranged at any suitable position in the wind box, and the shape can be adapted to the structure of the wind box at the position.

Described convection box cover 7 as shown in Figure 2, comprises a diffusion part with trapezoidal cross-section and a gathering part of rectangular cross-section, and diffusion part and gathering part are connected at the large end of diffusion part, and the small end face of diffusion part There are two air inlets 14 in this specific embodiment, corresponding to the two air outlets of the bellows, respectively. Inside the convection box cover 7 , a splitter device for splitting and guiding the airflow entering the convection box cover 7 is provided at a position corresponding to the air inlet 14 .

The splitter device is formed by one or more baffles 15 arranged at intervals, and the baffles 15 corresponding to each air inlet 14 are symmetrically arranged on both sides of the center line of the corresponding air inlet 14, and fixed on the front of the convection box cover 7. Between the side wall 18 and the rear side wall 17 (the front and rear mentioned here have the same meaning as the bottom and top of Figure 5 respectively), the partition 15 of this specific embodiment is fixed between the front and rear side walls of the diffusion between.

Adjacent baffles form certain included angles and are inclined towards the center of the corresponding air inlet, and the included angles between adjacent baffles are all equal.

The separator can be a flat plate, as shown in Figure 2 and Figure 5; it can also be a curved plate with one end bent, as shown in Figure 6; it can also be a curved plate as a whole.

In this way, the airflow blown from the bellows 2 to the glass plate 5 can pass through the air duct formed by the guide plate 10 at the corner of the bellows 2 in the direction shown by the arrow 16 in Figure 2, and the wind pressure can be increased without increasing the fan power. 10%, then enter the convection box cover 7 from the air outlet 9 of the bellows 2 through the air inlet 14 of the convection box cover 7, and under the guidance and diversion of the flow distribution device, the air flow is evenly blown to the heater 3 for heating, and then blows to the The glass plate 5 is uniformly convectively heated on the glass plate 5 .

Claims (10)

1. a glass plate heating furnace convection current case, comprise bellows and convection current case cover, the air outlet (9) of bellows is connected with the blast inlet (14) of convection current case cover (7), it is characterized in that: in being provided with case in bellows (2), air-flow guides to the guiding device of air outlet (9), in convection current case cover (7), be provided with the part flow arrangement of diffusing air current.

2. a kind of glass plate heating furnace convection current case according to claim 1, is characterized in that: described guiding device is made up of one or more flow deflector (10).

3. a kind of glass plate heating furnace convection current case according to claim 2, is characterized in that: described multiple flow deflectors (10) are arranged in parallel.

4. a kind of glass plate heating furnace convection current case according to claim 3, is characterized in that: described multiple flow deflectors (10) each interval evenly arranges.

5. according to a kind of glass plate heating furnace convection current case described in claim 1-4 any one, it is characterized in that: described flow deflector (10) is smooth plate or arc.

6. according to a kind of glass plate heating furnace convection current case described in claim 1-4 any one, it is characterized in that: described part flow arrangement is made up of one or more dividing plate (15).

7. a kind of glass plate heating furnace convection current case according to claim 6, is characterized in that: described multiple dividing plates (15) are symmetricly set on the both sides of blast inlet (14) medullary ray of convection current case cover (7).

8. a kind of glass plate heating furnace convection current case according to claim 7, is characterized in that: described multiple dividing plates (15) all tilt towards the blast inlet (9) of convection current case cover (7).

9. a kind of glass plate heating furnace convection current case according to claim 8, is characterized in that: the angle between adjacent two dividing plates all equates.

10. according to a kind of glass plate heating furnace convection current case described in claim 7-9 any one, it is characterized in that: described dividing plate (15) is the bent plate of flat board or one end bending, or entirety is the bent plate of arc.