A manual liquid level measuring device for a feed tank used in overflow method substrate glass production

Abstract

The utility model discloses a manual liquid level measuring device for a feed trough for overflow method substrate glass production, which comprises a bracket, a fixing assembly, a leveling assembly, an insulating plate and a manual liquid level measuring assembly; the bracket is fixed above the feed trough by the fixing assembly, the insulating plate is connected to the bracket by the leveling assembly, the leveling assembly can adjust the orientation and height of the insulating plate relative to the bracket, and can also level the insulating plate; the manual liquid level measuring assembly is placed on the insulating plate, and its liquid level probe extends downward through the insulating plate and the leveling assembly into the feed trough. The device can stably and reliably measure the liquid level when the top of the feed trough is covered with a thermal blanket.

Description

Technical Field

[0001] The utility model belongs to the technical field of overflow method substrate glass production, in particular to a manual liquid level measuring device for a feed tank used for overflow method substrate glass production. Background Art

[0002] The overflow production process of liquid crystal glass substrates uses a platinum channel to clarify bubbles, homogenize materials, adjust viscosity and control flow of molten glass. The feed trough is located at the end of the channel, and its main function is to control the flow rate and uniform temperature of the glass by fine-tuning the temperature. The diameter of the feed trough varies from top to bottom, decreasing step by step. The upper half of the feed end is called the feed bowl; the lower half is called the feed pipe, which is used to control the flow and coordinate molding.

[0003] The narrow straight tube above the feeding bowl is designed to reduce the volatilization area of ​​the glass liquid retention layer (commonly known as the immobile layer). Under normal circumstances, the glass liquid should submerge the lower half of the narrow tube. It is usually necessary to manually measure the liquid level inside the narrow tube to confirm whether the lower half of the narrow tube is submerged. The appropriate liquid level in the narrow tube at the top of the feeding trough is of great significance for the process countermeasures for glass defects such as streaks and air-involved bubbles, as well as the pressure loss control of the channel.

[0004] The existing method of manually measuring the liquid level in the feed tank is roughly as follows:

[0005] 1. Slowly and vertically place the liquid level probe (platinum rod) into the liquid level tube until the bottom surface of the platinum rod fixture touches the upper edge of the liquid level tube. When you feel the platinum rod touch the glass liquid, stop for about 1 minute.

[0006] 2. Slowly lift the platinum rod vertically out of the glass liquid. At this time, the end of the platinum rod inserted into the glass liquid will adhere to the glass liquid. If there is no glass liquid or less glass liquid at the end of the platinum rod (difficult to measure), the measuring (extending) length of the platinum rod can be appropriately adjusted.

[0007] 3. Use a stainless steel ruler to measure the vertical distance from the bottom of the platinum rod fixture (angle steel) to the boundary where the platinum rod is immersed in the glass liquid, which is the liquid level height H in the liquid level tube.

[0008] like Figure 1 As shown, the molten glass flows from the cooling section into the feed trough, and after fine adjustment of viscosity and flow control, it flows into the L tube of the muffle furnace. Due to the needs of the channel process, several layers of ceramic insulation blankets are laid on the top of the feed trough. This situation is not suitable for manual measurement of the liquid level directly on the insulation blanket, because the insulation blanket is loose and easy to deform, which will seriously affect the measurement accuracy of the manual liquid level. In actual production, the liquid level measurement needs to be accurate to 1mm to accurately grasp the changes in the liquid level. Moreover, the process does not allow the ceramic insulation blanket to be uncovered to measure the liquid level, because the temperature change caused by this will bring great risks to flow control and stripe defects. Utility Model Content

[0009] The utility model aims to provide a manual liquid level measuring device for a feed tank used in overflow method substrate glass production, which can overcome the problem that the top of the feed tank is not suitable for directly measuring the liquid level because the heat preservation blanket covers the top of the feed tank.

[0010] The utility model provides a manual liquid level measuring device for a feed trough used for overflow method substrate glass production, comprising a bracket, a fixing assembly, a leveling assembly, an insulating plate and a manual liquid level measuring assembly; the bracket is fixed above the feed trough by the fixing assembly, the insulating plate is connected to the bracket by the leveling assembly, the leveling assembly can adjust the orientation and height of the insulating plate relative to the bracket, and can also level the insulating plate; the manual liquid level measuring assembly is placed on the insulating plate, and its liquid level probe extends downward through the insulating plate and the leveling assembly into the feed trough.

[0011] In one embodiment of the above device, the bracket is divided into a horizontal section and a vertical section, and one side of the vertical section has a clamping section and a limiting section extending outward; a hole is opened on the clamping section of the bracket, and a fastener is fixed on the top surface of the hole.

[0012] In one embodiment of the above device, the fixing assembly is a screw with a force nut welded to the bottom end.

[0013] In one embodiment of the above device, an insulating gasket is provided on the bottom surface of the bracket limiting section, and an insulating sleeve gasket is provided on the top surface of the fixing component.

[0014] In one embodiment of the above device, the leveling assembly includes a support plate and leveling bolts; the support plate is rotatably connected to the bracket via a fastener; and a plurality of leveling bolts are vertically fixed to the support plate.

[0015] In one embodiment of the above device, an oblong hole is formed at the connection position between the support plate and the bracket.

[0016] In one embodiment of the above device, the insulating plate is a ring-shaped phenolic resin plate, and the insulating plate and the circular hole on the support plate are of equal diameter and concentric; the leveling bolts all pass through the insulating plate, and the insulating plate is clamped and limited up and down by two nuts.

[0017] In one embodiment of the above-mentioned device, the manual liquid level measurement assembly includes an angle steel, a pipe clamp and a liquid level probe; the liquid level probe is a cylindrical platinum rod; the outer side of the angle steel is provided with an arc-shaped groove, the inner surface of the groove matches the outer surface of the liquid level probe; the pipe clamp clamps the liquid level probe rod in the groove.

[0018] In one embodiment of the above device, the outer side surface and the bottom surface of the angle steel are finely processed, and the two surfaces are perpendicular to each other and smooth; the bottom surface of the angle steel is flatly attached to the insulating plate, and the hand-measured liquid level assembly does not contact other steel parts.

[0019] The beneficial effects of the utility model are:

[0020] 1. This device can stably and reliably measure the liquid level when the top of the feed tank is covered with a thermal blanket;

[0021] 2. The device is insulated from the ground. At the same time, it can be installed and removed without loss without the help of electric welding and electric drilling, avoiding the huge equipment safety hazards caused by live operations during the operation of the production line, and protecting the platinum channel and molding equipment and other precision and valuable equipment that are powered on. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a feed trough in the prior art.

[0023] Figure 2 This is a schematic diagram of the axonometric structure of an embodiment of the utility model.

[0024] Figure 3 for Figure 2 Schematic diagram of the structure of the middle plug supporting the iron plate.

[0025] Figure 4 This is a schematic diagram of the device in use when installed on a feed trough.

[0026] In the figure: 1. bracket; 2. fixing top screw; 3. support plate; 4. leveling bolt; 5. insulation plate; 6. angle steel; 7. pipe clamp; 8. liquid level probe; 9. connecting beam; 10. feed trough; 11. insulation blanket. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the relevant technical solutions. Obviously, the described embodiments are only part of the embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 2 As shown, the manual liquid level measuring device for the feed trough used for overflow method substrate glass production disclosed in this embodiment includes a bracket 1, a fixed top screw 2, a support plate 3, a leveling bolt 4, an insulating plate 5, an angle steel 6, a pipe clamp 7 and a liquid level probe 8.

[0029] The bracket 1 is made of a plurality of rectangular tubes welded together. The bracket is divided into a horizontal section and a vertical section. One side of the vertical section has a clamping section and a limiting section extending outward. A hole is opened on the bracket clamping section, and a nut is welded and fixed on the top surface of the hole. An insulating gasket is arranged on the bottom surface of the bracket limiting section.

[0030] The fixed top screw 2 is a screw rod, and a force nut is welded at its bottom end for easy operation and rotation. An insulating sleeve gasket is arranged on the top surface of the fixed screw rod to increase the friction of the contact surface and prevent slipping.

[0031] The support plate 3 is connected to the bracket 1 through a bolt group, and an oblong hole is provided at the connection position of the support plate, and the length and angle of the connection between the support plate and the bracket can be adjusted through the oblong hole. An insulating sleeve is provided on the surface of the bolt group.

[0032] Three leveling bolts 4 are evenly welded on the support plate 3, and each leveling bolt is perpendicular to the support plate.

[0033] The insulating plate 5 is a circular phenolic resin plate, and the insulating plate and the circular hole on the support plate are of equal diameter and concentric. Three leveling bolts all pass through the insulating plate, and the insulating plate is clamped and limited by two nuts up and down; the insulating plate can be leveled by adjusting the nut height of the three leveling bolts.

[0034] In this embodiment, the above components except the insulating plate are all made of SUS304 steel. The thickness of the insulating plate is preferably 10 mm, the outer diameter is preferably 200 mm, and the inner diameter is preferably 60 mm.

[0035] like Figure 3 As shown, the angle steel 6, the pipe clamp 7 and the liquid level probe 8 are combined to form a hand-measured liquid level gauge.

[0036] The liquid level probe 8 is a cylindrical platinum rod. The outer side of the angle steel 6 is provided with an arc-shaped slot, and the inner surface of the slot matches the outer surface of the liquid level probe. The outer side and bottom surface of the angle steel are finely processed to ensure that the two surfaces are perpendicular to each other and smooth.

[0037] The pipe clamp 7 clamps the liquid level probe 8 in the clamping groove and is fastened by a nut on the other side. When the nut of the pipe clamp is loosened, the insertion length of the liquid level probe can be adjusted.

[0038] When measuring the liquid level, the bottom surface of the angle steel 6 of the manual liquid level gauge is placed flat against the insulating plate 5, while ensuring that the manual liquid level gauge does not touch other steel parts.

[0039] In this embodiment, the specification of the angle steel is preferably 50*50*4*100mm, the specification of the pipe clamp is determined according to the diameter of the liquid level probe, and the material is SUS304.

[0040] like Figure 4 As shown, the steps for installing and using this device are as follows:

[0041] 1. Place the vertical section of the bracket on the top flange of the connecting beam 9 of the muffle furnace suspension mechanism closest to the feed trough 10, and tighten the top screw to fix the bracket.

[0042] 2. Adjust the position of the support plate and level the insulating plate so that the support plate and the insulating plate are suspended directly above the feed trough to ensure that the liquid level probe is aligned with the liquid level port of the feed trough.

[0043] 3. Finally, fine-tune the liquid level probe to the appropriate length and insert it into the feed trough.

[0044] When taking manual liquid level readings, first measure the distance from the insulating plate to the top of the feed trough as a constant value H2, and the manual liquid level reading is H1, then the liquid level height at the top of the feed trough H=H1-H2.

[0045] The advantages of using this device are:

[0046] 1. This device can stably and reliably measure the liquid level when the top of the feed tank is covered with a thermal blanket;

[0047] 2. The device is insulated from the ground. At the same time, it can be installed and removed without loss without the help of electric welding and electric drilling, avoiding the huge equipment safety hazards caused by live operations during the operation of the production line, and protecting the platinum channel and molding equipment and other precision and valuable equipment that are powered on.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although detailed descriptions are made with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A manual liquid level measuring device for a feed tank used in overflow method substrate glass production, characterized in that: It includes a bracket, a fixing assembly, a leveling assembly, an insulating plate and a hand-measurement liquid level assembly; The bracket is fixed above the feed trough through a fixing assembly, and the insulating plate is connected to the bracket through a leveling assembly. The leveling assembly can adjust the orientation and height of the insulating plate relative to the bracket, and can also level the insulating plate; the manual liquid level assembly is placed on the insulating plate, and its liquid level probe extends downward through the insulating plate and the leveling assembly into the feed trough.

2. The manual liquid level measuring device for a feed tank used in overflow method substrate glass production according to claim 1, characterized in that: The bracket is divided into a horizontal section and a vertical section. One side of the vertical section is provided with a clamping section and a limiting section extending outward. A hole is opened on the clamping section of the bracket, and a fastener is fixed on the top surface of the hole.

3. The manual liquid level measuring device for a feed tank used in overflow method substrate glass production according to claim 2, characterized in that: The fixing component is a screw with a force nut welded on the bottom end.

4. The manual liquid level measuring device for a feed tank used in overflow method substrate glass production according to claim 3, characterized in that: An insulating gasket is arranged on the bottom surface of the bracket limiting section, and an insulating sleeve gasket is arranged on the top surface of the fixing component.

5. The manual liquid level measuring device for a feed tank used in overflow process substrate glass production according to claim 1, characterized in that: The leveling assembly includes a support plate and a leveling bolt; The support plate is rotatably connected to the bracket through fasteners; and a plurality of leveling bolts are vertically fixed on the support plate.

6. The manual liquid level measuring device for a feed tank used in overflow process substrate glass production according to claim 5, characterized in that: An oblong hole is provided at the connection position between the support plate and the bracket.

7. The manual liquid level measuring device for a feed tank used in overflow process substrate glass production according to claim 5, characterized in that: The insulating plate is a ring-shaped phenolic resin plate, and the insulating plate and the circular hole on the supporting plate are of equal diameter and concentric; the leveling bolts all pass through the insulating plate, and the insulating plate is clamped and limited up and down by two nuts.

8. The manual liquid level measuring device for a feed tank used in overflow process substrate glass production according to claim 1, characterized in that: The manual liquid level measuring assembly comprises an angle steel, a pipe clamp and a liquid level probe; The liquid level probe is a cylindrical platinum rod; an arc-shaped groove is opened on the outer side of the angle steel, and the inner surface of the groove matches the outer surface of the liquid level probe; the pipe clamp clamps the liquid level probe rod in the groove.

9. The manual liquid level measuring device for a feed tank used in overflow method substrate glass production according to claim 8, characterized in that: The outer side surface and the bottom surface of the angle steel are finely processed, and the two surfaces are perpendicular to each other and smooth; the bottom surface of the angle steel is flatly placed against the insulating plate, and the hand-measured liquid level assembly does not contact other steel parts.

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