Runner closure flashboard for controlling flow of glass paste

Abstract

The utility model belongs to the technical field of flow channel intercepting flashboards, and particularly discloses a flow channel intercepting flashboard for controlling the flow of glass paste. The problem that an existing flow channel closure gate plate is short in service life is solved. The flow channel closure flashboard comprises a flashboard body, the lower end face of the flashboard body is an arc surface bent upwards, the vertical height between the bottommost end of the arc surface and the topmost end of the arc surface is 30 mm, and when the bottommost end of the flashboard body reaches the lower limit position, the area of a gap between the arc surface and a flow channel is 120 cm < 2 >. The lower limit position means that the vertical height between the bottommost end of the gate plate body and the bottom of the runner is 5mm; the longitudinal section of the upper end part of the flashboard body is a trapezoid which is gradually closed from top to bottom, and the vertical height of the upper end part is 1 / 6 of the height of the flashboard body. The utility model not only effectively prolongs the service life of the flow channel closure flashboard, but also effectively solves the glass quality problem caused by temperature difference in the edge of the plate belt.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of flow channel intercepting gate, especially relates to a flow channel intercepting gate for controlling glass paste flow. BACKGROUND

[0002] The flow channel intercepting gate is installed between the kiln and the tin tank and is used for controlling the size of the glass paste flow, and is made of fused quartz material.

[0003] The lower end face of the conventional flow channel intercepting gate is flush, as shown in FIG. Figure 6 The service life of the flow channel intercepting gate is not more than 2 years. Figure 7 When the flow channel intercepting gate is eroded too much, even if the flow channel intercepting gate is closed to the lowest position, the glass paste still flows out too much from the middle eroded position of the flow channel intercepting gate. INVENTION CONTENTS

[0004] The utility model discloses a flow channel intercepting gate for controlling glass paste flow, which effectively solves the problem of short service life of the current flow channel intercepting gate.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] A flow channel intercepting gate for controlling glass paste flow, comprising a gate body, the lower end face of the gate body is an upwardly curved circular arc face, the vertical height between the bottommost end of the circular arc face and the topmost end of the circular arc face is 30 mm, when the bottommost end of the gate body reaches the lower limit position, the gap area between the circular arc face and the flow channel is 120 cm 2 , and the lower limit position refers to the vertical height between the bottommost end of the gate body and the bottom of the flow channel is 5 mm.

[0007] Further, the longitudinal section of the upper end portion of the gate body is a trapezoid that is gradually tapered from top to bottom, and the vertical height of the upper end portion is 1 / 6 of the height of the gate body.

[0008] Further, the lower end of the gate body is provided with a groove.

[0009] Further, the vertical height between the setting position of the groove and the bottommost end of the gate body is 1 / 5-1 / 4 of the height of the gate body.

[0010] Further, the maximum thickness of the upper end portion of the gate body is 162 mm, and the minimum thickness of the upper end portion of the gate body is 142 mm.

[0011] Further, the groove is composed of an upper side slope located above and a lower side slope located below, and the upper side slope of the groove is divided into two sections from top to bottom according to the slope, wherein the slope of the upper section located above is greater than the slope of the lower section located below.

[0012] Further, the material of the shutter body is fused quartz.

[0013] Compared with the prior art, the beneficial technical effects of the utility model are:

[0014] The utility model discloses a shutter body lower end face is improved as the circular arc surface and the design to the circular arc surface radian, not only effectively prolongs the service life of the flow passage intercepting shutter, and effectively solved the glass quality problem that the plate belt edge medium temperature difference brought. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the front view of the shutter body of the utility model.

[0016] Figure 2 It is the side view of the shutter body of the utility model.

[0017] Figure 3 It is Figure 2 The enlarged view of C.

[0018] Figure 4 It is Figure 2 The enlarged view of D.

[0019] Figure 5 It is the combined structure schematic view of the utility model and the flow passage.

[0020] Figure 6 It is the combined structure schematic view of the traditional flow passage intercepting shutter and the flow passage.

[0021] Figure 7 It is the combined structure schematic view of the traditional flow passage intercepting shutter and the flow passage after erosion.

[0022] Reference signs: shutter body-1;Circular arc surface-2;Flow passage-3;Groove-4;Upper side slope-5;Lower side slope-6. DETAILED DESCRIPTION

[0023] Embodiment 1: a flow passage intercepting shutter for controlling the flow of glass paste, comprising a shutter body 1. Figure 1 、 Figure 2 And Figure 5As shown, the lower end surface of the dam body 1 is an upwardly curved circular arc surface 2, the vertical height between the bottom end of the circular arc surface 2 and the top end of the circular arc surface 2 is 30 mm, when the bottom end of the dam body 1 reaches the lower limit position (the lower limit position refers to the vertical height between the bottom end of the dam body 1 and the bottom of the flow channel 3 is about 5 mm), the total area of the gap between the circular arc surface 2 and the flow channel 3 is about 120 cm 2 .

[0024] The applicant found that the adjustment margin is still very large when the embodiment is used for more than 2 years, that is, the service life of the embodiment is much longer than two years, and the service life of the embodiment is greatly prolonged compared with the traditional flow channel intercepting dam with a flush lower end surface (as shown in Figure 3 , the traditional flow channel intercepting dam has the same distance from the flow channel 3, the middle glass paste flow is more, and under the double action of temperature and flow, the erosion of the glass paste to the middle position is more serious than that of the two sides, as shown in Figure 4 .

[0025] The embodiment considers the glass paste temperature difference of the flow channel 3 in design, intentionally controls the middle glass paste flow, reduces the erosion of the middle position of the dam body 1, and prolongs the service life of the flow channel intercepting dam.

[0026] In addition, the embodiment can also effectively solve the glass quality problem caused by the temperature difference of the middle of the strip, the main reason is that when using the traditional flow channel intercepting dam, the middle glass paste flow is more, and the glass paste still has high temperature in the middle and low temperature on the two sides after flowing into the tin bath. In order to reduce the temperature difference of the middle of the glass plate in the tin bath, the distribution of the electric heating amount of the tin bath is adjusted, and the electric heating amount of the edge part is increased. In addition, due to the high temperature of the middle glass paste and the fast middle plate speed, glass dripping and other defects are prone to occur. However, due to the circular arc surface 2 of the lower end surface of the embodiment, the middle glass paste flow is small and the two side glass paste flows are large, so the quality problem caused by the temperature difference of the plate strip in the tin bath can be effectively reduced, and the electric heating amount can be reduced.

[0027] In the embodiment, as shown in Figure 2 and Figure 3 , in order to facilitate the fixation of the dam body 1, the longitudinal section of the upper end part of the dam body 1 is a trapezoidal shape that gradually narrows from top to bottom, the vertical height of the upper end part is 133±3 mm, and the height of the dam body 1 is 830±5 mm. The maximum thickness of the upper end part of the dam body 1 is 162 mm, and the minimum thickness of the upper end part of the dam body 1 is 142 mm.

[0028] In the embodiment, as shown in Figure 2 and Figure 4As shown, the lower end of the dam body 1 is provided with a groove 4, when the condensate on the surface of the dam body 1 flows down, it will flow into the groove 4, when the condensate in the groove 4 overflows, it will flow to both sides of the dam body 1, thereby preventing the condensate from flowing onto the glass plate surface. The groove 4 is composed of an upper slope 5 located above and a lower slope 6 located below, the upper slope 5 of the groove 4 is divided into two sections from top to bottom according to the slope, wherein the slope of the section located above (the vertical height is 25mm) is greater than that of the section located below (the vertical height is 20mm). The upper edge of the upper slope 5 is 227mm away from the bottom end of the dam body 1 in vertical height, the upper edge of the lower slope 6 is 182mm away from the bottom end of the dam body 1 in vertical height, and the lower edge of the lower slope 6 is 168mm away from the bottom end of the dam body 1 in vertical height.

[0029] In this embodiment, the material of the dam body 1 is fused quartz.

[0030] The utility model discloses the improvement to the lower end surface of the dam body 1, not only effectively prolongs the service life of the flow passage intercepting dam, but also effectively solves the glass quality problem caused by the temperature difference in the plate belt edge.

[0031] The parts not described in the utility model can be realized by using or referring to the prior art.

[0032] Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples, and the changes, modifications, additions or replacements made by the technical personnel in the technical field within the essential scope of the utility model should also belong to the protection scope of the utility model.

Claims

1. A flow channel shutoff gate for controlling the flow of glass paste, characterized in that: It includes a gate body, the lower end surface of which is an upward curved arc surface, the vertical height between the bottom end of the arc surface and the top end of the arc surface is 30mm, and when the bottom end of the gate body reaches the lower limit position, the gap area between the arc surface and the flow channel is 120cm 2 The lower limit position refers to the vertical height between the bottom end of the gate body and the bottom of the flow channel, which is 5 mm.

2. The flow channel shutoff gate for controlling the flow of glass paste according to claim 1, characterized in that: The longitudinal section of the upper end portion of the gate body is a trapezoid that gradually closes from top to bottom, and the vertical height of the upper end portion is 1 / 6 of the height of the gate body.

3. The flow channel shutoff gate for controlling the flow of glass paste according to claim 2, characterized in that: A groove is provided at the lower end of the gate body.

4. The flow channel shutoff gate for controlling the flow of glass paste according to claim 3, characterized in that: The vertical height of the groove from the bottom end of the gate body is 1 / 5 to 1 / 4 of the height of the gate body.

5. The flow channel shutoff gate for controlling the flow of glass paste according to claim 4, characterized in that: The maximum thickness of the upper end portion of the gate body is 162 mm, and the minimum thickness of the upper end portion of the gate body is 142 mm.

6. The flow channel shutoff gate for controlling the flow of glass paste according to claim 5, characterized in that: The groove consists of an upper slope located at the top and a lower slope located at the bottom. The upper slope of the groove is divided into two sections from top to bottom according to the slope, wherein the slope of the upper section is greater than the slope of the lower section.

7. The flow channel shutoff gate for controlling the flow of glass paste according to claim 6, characterized in that: The material of the gate body is fused quartz.

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