Magnetic filtering device of TFT (thin film transistor) substrate glass melting furnace

Abstract

The utility model discloses a magnetic filter device for a TFT (thin film transistor) substrate glass melting furnace, which is characterized in that a plurality of magnetic strips are distributed on a magnetic grid frame in different interlayer structures to form a latticed structure, and then the magnetic grid frame is arranged at a feed port of a glass melting furnace stock bin; according to the invention, the magnetic grid frame is arranged, so that the glass mixture flows into the stock bin from the interior of the magnetic grid frame, and iron impurities in the glass mixture are adsorbed and filtered by utilizing the strong magnetism of the magnetic strips, so that the cleanliness of the glass mixture is ensured, the generation of bubbles is reduced, and the safety of a platinum channel is ensured; the magnetic strip has the advantages of large contact area with the glass mixture, sufficient contact time and the like in the process of injecting the glass mixture into the stock bin, the magnetic filtration capacity is greatly improved, in addition, the vertex angle of the triangular magnetic strip faces upwards and is an acute angle, the glass mixture can be effectively prevented from being accumulated at the top of the magnetic strip, and the service life of the magnetic strip is prolonged. The defect that the magnetic filtering effect is reduced due to material accumulation in the prior art is overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid crystal glass substrate production, and relates to a magnetic filtration device, in particular to a TFT substrate glass melting furnace magnetic filtration device. Background Art

[0002] In the production of TFT glass, during the melting process of the glass, metal impurities such as iron will not only accelerate the erosion of the platinum channel and shorten the life of the platinum channel, but also cause defects such as electrolysis to produce bubbles, which requires both enhanced channel maintenance and longer clarification time, or the use of methods such as increasing the temperature of the glass liquid and adding clarifiers to the raw materials to allow the gas to overflow from the glass liquid. However, high temperature conditions can easily accelerate the erosion of the refractory materials in the pool furnace clarification part, and methods such as adding clarifiers to the raw materials increase production costs.

[0003] In the known prior art, the content of metal impurities such as iron in the specifications of raw materials is basically controlled and a magnetic separator is added to the broken glass system to prevent such impurities, but whether the content of metal impurities such as iron in the glass melting mixture is low is still not guaranteed. Chinese patent CN202829801U provides a magnetic grid device, which is set at the TFT liquid crystal glass melting and feeding port, and a magnetic separation effect is performed during the melting and adding of the mixture to magnetically separate iron metal impurities. The device can reduce the iron metal impurities in the mixture to a certain extent, but the contact area between the glass raw material and the magnetic strip is relatively small due to the circular magnetic strip of this type of magnetic grid. When the glass raw material is injected into the silo, the glass raw material only contacts the magnetic strip in a small area, so that the magnetic separation ability cannot be effectively exerted. Moreover, since the top of the magnetic strip of this type of magnetic grid is easy to accumulate material, the glass raw material is isolated by the accumulated material on the magnetic strip during the injection into the silo, thereby reducing the magnetic separation effect of the magnetic strip again. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes a TFT substrate glass melting furnace magnetic filtration device, which uses magnetism to absorb and filter iron impurities in the glass mixture flowing into the silo to ensure the cleanliness of the glass mixture.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A TFT substrate glass melting furnace magnetic filtration device is installed at the feed port of the glass melting furnace silo, comprising a magnetic grid frame and a plurality of magnetic strips distributed in a grid shape on the magnetic grid frame, so that when a glass mixture flows from the magnetic grid frame into the silo, the magnetic strips distributed in a grid shape absorb and filter iron impurities in the glass mixture, and the cross-section of the magnetic strips is a triangular cross-section to increase the contact area between the magnetic strips and the glass mixture.

[0007] Furthermore, a plurality of magnetic stripes are distributed on the magnetic grid frame in different interlayer structures to form a grid-like distribution, the magnetic stripes in the same layer are arranged parallel to each other, and the magnetic stripes in two adjacent layers are arranged crosswise to each other.

[0008] Furthermore, the cross-sections of the plurality of magnetic strips are all triangular cross-sections with the vertex angles facing upwards, and the vertex angles of the triangular cross-sections are acute angles, so as to reduce the accumulation of glass mixture on the tops of the magnetic strips.

[0009] Furthermore, the magnetic grid frame is a square that matches the silo feed port, and the side length of the magnetic grid frame is 340-360 mm.

[0010] Furthermore, two opposite L-shaped clamping plates are provided on both sides of the magnetic grid frame, so that when the magnetic grid frame is installed on the silo feed port, the side plates and top plates of the clamping plates are respectively clamped on the side walls and top walls of the silo feed port.

[0011] Furthermore, a plurality of plug rods are provided on one side of the card plate, and a plurality of plug holes corresponding to the plug rods are provided on the outer walls on both sides of the magnetic grid frame. The plurality of plug rods are respectively inserted into the plurality of plug holes for sliding connection, so that the card plate can be extended and adapted to feed openings of silos of different sizes.

[0012] Furthermore, a spring is sleeved on the insertion rod, one end of the spring is connected to the clamping plate, and the other end is connected to the outer wall of the magnetic grid frame, so as to clamp the clamping plate tightly against the side wall and top wall of the silo feed port.

[0013] Furthermore, a limiting groove is provided on the inner wall of the insertion hole, and a limiting block adapted to the limiting groove is provided at one end of the insertion rod to limit the insertion rod from falling out of the insertion hole.

[0014] The beneficial effects of the utility model: the TFT substrate glass melting furnace magnetic filtration device provided by the utility model forms a grid structure by distributing a plurality of magnetic strips in different interlayer structures on a magnetic grid frame, and then installing the magnetic grid frame at the feed port of the glass melting furnace silo. When a glass mixture is added into the silo for melting, the glass mixture flows into the silo from the gaps between the magnetic strips distributed in a grid shape in the magnetic grid frame, and the iron impurities in the glass mixture are adsorbed and filtered by the strong magnetism of the magnetic strips, so that the content of metals such as iron in the glass mixture is reduced to a minimum, the cleanliness of the glass mixture is ensured, the occurrence of bubbles is reduced, and the safety of the platinum channel is guaranteed. By arranging magnetic strips with triangular cross-sections, the glass mixture has the advantages of a large contact area and sufficient contact time with the glass mixture during the process of being injected into the silo, so that the magnetic filtration capacity is greatly improved. In addition, the top angle of the triangular magnetic strip is upward and the top angle is an acute angle, which can effectively avoid the accumulation of glass mixture on the top of the magnetic strip, and overcomes the disadvantage of reducing the magnetic filtration effect due to accumulation in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the installation diagram of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the utility model.

[0017] Figure 3 It is a cross-sectional view of the utility model.

[0018] Figure 4 It is a schematic diagram of the connection between the magnetic grid frame and the card plate of the utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0020] like Figure 1 As shown, the utility model provides a TFT substrate glass melting furnace magnetic filter device, which is installed at the feed port of the glass melting furnace silo 1, such as Figure 2 As shown, the magnetic filtration device includes a magnetic grid frame 2 and a plurality of magnetic strips 3 distributed in a grid shape on the magnetic grid frame 2, so that when the glass mixture flows from the magnetic grid frame 2 into the silo 1, the magnetic strips 3 distributed in a grid shape absorb and filter the iron impurities in the glass mixture. Figure 3 As shown, the cross-section of the magnetic stripe 3 is a triangular cross-section to increase the contact area between the magnetic stripe 3 and the glass mixture. Multiple magnetic stripes 3 are distributed on the magnetic grid frame 2 in different interlayer structures to form a grid-like distribution. The magnetic stripes 3 of the same layer are arranged parallel to each other, and the magnetic stripes 3 of two adjacent layers are arranged crosswise. The cross-sections of the multiple magnetic stripes 3 are all triangular cross-sections with the vertex angle facing upward, and the vertex angle of the triangular cross-section is an acute angle to reduce the accumulation of glass mixture on the top of the magnetic stripe 3.

[0021] The magnetic grid frame 2 is a square that matches the feed port of the silo 1, and the side length of the magnetic grid frame 2 is 340-360mm. Two opposite L-shaped clamping plates 4 are provided on both sides of the magnetic grid frame 2, so that when the magnetic grid frame 2 is installed on the feed port of the silo 1, the side plates and top plates of the clamping plates 4 are respectively clamped on the side walls and top walls of the feed port of the silo 1, which is convenient and quick to disassemble and assemble. Figure 4As shown, a plurality of plug rods 41 are provided on one side of the card plate 4, and a plurality of plug holes 21 corresponding to the plug rods 41 are provided on the outer walls on both sides of the magnetic grid frame 2. The plurality of plug rods 41 are respectively inserted into the plurality of plug holes 21 for sliding connection, so that the card plate 4 can be telescopically adapted to the feed openings of the silo 1 of different sizes. A spring 42 is sleeved on the plug rod 41, one end of the spring 42 is connected to the card plate 4, and the other end is connected to the outer wall of the magnetic grid frame 2, so as to tightly clamp the card plate 4 on the side wall and top wall of the feed opening of the silo 1 for stable installation. A limiting groove 22 is provided on the inner wall of the plug hole 21, and a limiting block 43 adapted to the limiting groove 22 is provided at one end of the plug rod 41 to prevent the plug rod 41 from escaping from the plug hole 21.

[0022] The utility model provides a TFT substrate glass melting furnace magnetic filtration device, which forms a grid structure by distributing a plurality of magnetic strips in different interlayer structures on a magnetic grid frame, and then installing the magnetic grid frame at the feed port of the glass melting furnace silo. When a glass mixture is added into the silo for melting, the glass mixture flows into the silo from the gaps between the magnetic strips distributed in a grid shape in the magnetic grid frame, and the iron impurities in the glass mixture are adsorbed and filtered by the strong magnetism of the magnetic strips, so that the content of metals such as iron in the glass mixture is reduced to a minimum, the cleanliness of the glass mixture is ensured, the occurrence of bubbles is reduced, and the safety of the platinum channel is guaranteed. By arranging the magnetic strips with triangular cross-sections, the glass mixture has the advantages of large contact area and sufficient contact time during the process of being injected into the silo, so that the magnetic filtration capacity is greatly improved. In addition, the vertex angle of the triangular magnetic strips faces upward and is acute, which can effectively avoid the accumulation of the glass mixture on the top of the magnetic strips, and overcomes the disadvantage of reducing the magnetic filtration effect due to the accumulation in the prior art.

[0023] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A TFT substrate glass melting furnace magnetic filter device, installed at the feed port of a glass melting furnace silo (1), characterized in that: It comprises a magnetic grid frame (2) and a plurality of magnetic strips (3) distributed in a grid shape on the magnetic grid frame (2) to absorb and filter iron impurities in a glass mixture flowing into a silo (1); the cross-section of the magnetic strips (3) is triangular.

2. The magnetic filtration device according to claim 1, characterized in that: A plurality of magnetic stripes (3) are distributed on the magnetic grid frame (2) in different interlayer structures to form a grid-like distribution; the magnetic stripes (3) of the same layer are arranged parallel to each other, and the magnetic stripes (3) of two adjacent layers are arranged crosswise to each other.

3. The magnetic filtration device according to claim 1, characterized in that: The cross sections of the plurality of magnetic strips (3) are all triangular cross sections with the vertex angle facing upwards, and the vertex angle of the triangular cross section is an acute angle.

4. The magnetic filtration device according to claim 1, characterized in that: The magnetic grid frame (2) is a square that matches the feed opening of the silo (1), and the side length of the magnetic grid frame (2) is 340-360 mm.

5. The magnetic filtration device according to claim 4, characterized in that: Two opposite L-shaped clamping plates (4) are provided on both sides of the magnetic grid frame (2), and the side plates and top plates of the clamping plates (4) are respectively clamped on the side walls and top walls of the feed inlet of the silo (1).

6. The magnetic filtration device according to claim 5, characterized in that: A plurality of insertion rods (41) are provided on one side of the card plate (4), and a plurality of insertion holes (21) corresponding to the insertion rods (41) are provided on the outer walls on both sides of the magnetic grid frame (2), and the plurality of insertion rods (41) are respectively inserted into the plurality of insertion holes (21) for sliding connection.

7. The magnetic filtration device according to claim 6, characterized in that: A spring (42) is sleeved on the insertion rod (41); one end of the spring (42) is connected to the clamping plate (4), and the other end is connected to the outer wall of the magnetic grid frame (2).

8. The magnetic filtration device according to claim 6, characterized in that: A limiting groove (22) is provided on the inner wall of the insertion hole (21), and a limiting block (43) adapted to the limiting groove (22) is provided on one end of the insertion rod (41).

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