Treatment device and method for molten glass

Abstract

The present disclosure provides a processing device and method for molten glass. The processing device for molten glass includes a housing and a platinum channel. An accommodation space isolated from the outside is formed inside the housing; at least a part of the platinum channel is disposed in the accommodation space of the housing; the platinum channel is used for flowing the glass liquid to be processed to process the glass liquid to be processed; the platinum channel communicates with the accommodation space of the housing so that the glass liquid in the platinum channel can overflow into the accommodation space of the housing to form a protective glass liquid, and the part of the platinum channel disposed in the accommodation space of the housing is immersed in the protective glass liquid. The platinum channel in the accommodation space of the housing is immersed by the protective glass liquid in the accommodation space of the housing, thereby preventing the platinum channel from being eroded and damaged and prolonging the service life.

Description

Technical Field

[0001] The present disclosure relates to the technical field of processing molten glass, and particularly to an apparatus and method for processing molten glass. Background Art

[0002] In the process of glass processing and forming, it is necessary to melt the glass into a liquid state. During the glass melting process, many bubbles are generated. To remove the bubbles in the high-temperature glass liquid and make the glass liquid uniform, the common processing methods for the glass liquid include bubbling, high-temperature clarification, and platinum channel negative pressure clarification.

[0003] In the glass liquid with a relatively high viscosity, the bubbles are not easily discharged, which affects the compositional uniformity. Therefore, the platinum channel negative pressure clarification method is often used for defoaming.

[0004] In the conventional platinum channel negative pressure clarification method, electric heating is carried out outside the platinum channel. The temperature of the glass liquid in the platinum channel is not uniform, which affects the uniformity of the glass liquid. At the same time, in a high-temperature environment above 1500°C, under the action of the pressure difference inside and outside the platinum channel, small ions such as hydrogen ions in the environment are easily to penetrate through the wall of the platinum channel, damaging the platinum channel and affecting the service life of the device. Summary of the Invention

[0005] One technical problem to be solved by the present disclosure is the problem that the platinum channel is easily eroded and damaged during the process of processing the glass liquid.

[0006] To solve the above technical problem, an embodiment of the present disclosure provides an apparatus for processing molten glass, including:

[0007] A housing, within which a containment space isolated from the outside is formed; and

[0008] A platinum channel, at least a part of which is disposed within the containment space of the housing; the platinum channel is for flowing the glass liquid to be processed to process the glass liquid to be processed;

[0009] Wherein, the platinum channel communicates with the containment space of the housing, so that the glass liquid in the platinum channel can overflow into the containment space of the housing to form a protective glass liquid, and the part of the platinum channel disposed within the containment space of the housing is immersed in the protective glass liquid.

[0010] In some embodiments, a communicating pipe is provided on the part of the platinum channel disposed within the containment space of the housing, and it communicates with the containment space of the housing through the communicating pipe.

[0011] In some embodiments, a heating device is provided within the housing to heat the protective glass liquid, and the platinum channel is heated by the protective glass liquid.

[0012] In some embodiments, it further includes a bubbling device; the bubbling device is communicated with the platinum channel and is used for introducing gas into the platinum channel.

[0013] In some embodiments, the part of the platinum channel arranged in the accommodation space of the housing includes an ascending channel, a top channel and a descending channel which are communicated in sequence; the bubbling device is communicated with the ascending channel.

[0014] In some embodiments, one end of the platinum channel is communicated with the melting side cavity, and the other end of the platinum channel is communicated with the forming side cavity; the melting side cavity and the forming side cavity are communicated through a bypass channel; and a valve is arranged on the bypass channel.

[0015] In some embodiments, the part of the platinum channel arranged in the accommodation space of the housing includes an ascending channel, a top channel and a descending channel which are communicated in sequence; the ascending channel is communicated with the melting side cavity; the descending channel is communicated with the forming side cavity; the melting side cavity and the forming side cavity are communicated through a bypass channel; and a valve is arranged on the bypass channel.

[0016] In some embodiments, the accommodation space of the housing is communicated with a negative pressure vacuum device to form a negative pressure in the accommodation space of the housing.

[0017] The embodiment of the present disclosure further provides a method for processing molten glass, which adopts the molten glass processing device provided by the previous embodiments, and includes the following steps:

[0018] Fill the molten glass into the platinum channel, and make the molten glass in the platinum channel overflow into the accommodation space of the housing to form a protective molten glass, and immerse the part of the platinum channel arranged in the accommodation space of the housing in the protective molten glass; and

[0019] Fill the platinum channel with the glass liquid to be processed to process the glass liquid to be processed.

[0020] In some embodiments, the molten glass processing device further includes a heating device and a bubbling device; the heating device is arranged in the housing, and the bubbling device is communicated with the platinum channel; the following steps are further included:

[0021] Form a negative pressure in the accommodation space of the housing;

[0022] Use the heating device to heat the protective molten glass, and heat the platinum channel through the protective molten glass; and

[0023] Use the bubbling device to introduce gas into the platinum channel for defoaming and stirring.

[0024] Through the above technical solutions, the molten glass processing device and method provided by the present disclosure use the protective molten glass in the accommodation space of the housing to immerse the platinum channel in the accommodation space of the housing during the process of processing molten glass, thereby avoiding the platinum channel from being eroded and damaged and prolonging the service life.

[0025] The protective glass liquid is heated by a heating device, and the platinum channel is heated by the protective glass liquid, so that the temperature of the platinum channel is uniform.

[0026] A bubbling device is used to introduce gas into the platinum channel. The gas is injected into the glass liquid to be treated through the bubbling device to form large bubbles. The large bubbles increase in volume during the rising process and carry away tiny bubbles in the glass liquid to be treated, while accelerating the flow of the glass liquid to be treated, thereby increasing the defoaming performance of the glass liquid to be treated, increasing the uniformity, and increasing the process stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a front view of the structure of the molten glass processing device disclosed in the embodiment of the present disclosure;

[0029] Figure 2 is a top view of the structure of the molten glass processing device disclosed in an embodiment of the present disclosure;

[0030] Figure 3 1 is a side view (melting side) of the structure of the molten glass processing device disclosed in an embodiment of the present disclosure;

[0031] Figure 4 It is a structural side view (forming side) of the molten glass processing device disclosed in an embodiment of the present disclosure.

[0032] Description of reference numerals:

[0033] 1. Melting side stirring rod; 2. Platinum channel; 21. Ascending channel; 22. Top channel; 23. Descending channel; 24. Connecting pipe; 3. Bubbling device; 4. Molding side stirring rod; 5. Shell; 51. Thermal insulation material layer; 52. Refractory material; 6. Heating device; 7. Bypass channel.

[0034] The melting side refers to the side connected to the furnace that supplies molten glass; the forming side refers to the side that outputs the processed molten glass for forming. DETAILED DESCRIPTION

[0035] The following further describes the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed descriptions and drawings of the following examples are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0036] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the compositions of materials, numerical expressions and values set forth in these embodiments should be construed as merely exemplary, rather than as limitations.

[0037] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0038] In addition, the "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. The terms "including" or "comprising" and the like mean that the elements before this term cover the elements listed after this term, and do not exclude the possibility of also covering other elements.

[0039] It should also be noted that in the description of the present disclosure, unless otherwise clearly defined and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0040] All terms used in this disclosure have the same meanings as those understood by those of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such herein.

[0041] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0042] The main processes of glass product processing are glass melting, clarification, forming, annealing, and finished product packaging. After heating glass raw materials in a furnace to a certain temperature, the glass raw materials start to melt, but the molten glass will dissolve air to form tiny bubbles. To ensure that the high-temperature molten glass has a uniform composition and no bubbles, common methods in molten glass treatment include bubbling, high-temperature clarification, and negative-pressure clarification in a platinum channel. Among them, the platinum channel can also be called the platinum alloy channel in this technical field, which is a channel made of a platinum alloy with high temperature resistance and good chemical stability to process the molten glass. In the prior art, the negative-pressure clarification method in the platinum channel uses an external electric heating method, resulting in uneven temperature of the molten glass in the platinum channel and affecting the uniformity of the molten glass. At the same time, in a high-temperature environment above 1500 °C, under the action of the pressure difference inside and outside the platinum channel, small ions such as hydrogen ions in the environment are likely to pass through the wall of the platinum channel, damaging the platinum channel and affecting the service life of the device.

[0043] As Figures 1 to 4 shown, to solve the problem that the platinum channel is easily eroded and damaged during the process of processing molten glass, an embodiment of this disclosure provides a processing device for melting glass, including a housing 5 and a platinum channel 2. An accommodation space isolated from the outside is formed inside the housing 5. Being isolated from the outside means that the accommodation space is separated from the environment outside the housing through means such as sealing, so that the environment inside the accommodation space can be adjusted to be different from the environment outside the housing. At least a part of the platinum channel 2 is disposed in the accommodation space of the housing 5. The platinum channel 2 is used for the flow of the molten glass to be processed to process the molten glass to be processed. Among them, the platinum channel 2 communicates with the accommodation space of the housing 5 so that the molten glass in the platinum channel 2 can overflow into the accommodation space of the housing 5 to form a protective molten glass, and the part of the platinum channel 2 disposed in the accommodation space of the housing 5 is immersed in the protective molten glass. In this embodiment, for the technical features not described in detail, such as how the platinum channel 2 is disposed in the accommodation space of the housing 5, how it is connected to the housing 5, how it is connected to external devices, and the connection method between the platinum channel 2 and the accommodation space of the housing 5, those skilled in the art can all achieve them through the methods in the prior art on the premise of ensuring that the technical problems are solved.

[0044] The accommodation space of the housing 5 can form an environment isolated from the outside, and at least a part of the platinum channel 2 is arranged in the accommodation space of the housing 5 and the two are communicated. Before processing, the glass liquid is overflowed into the accommodation space of the housing 5 through the platinum channel 2 to form a protective glass liquid, so that the platinum channel 2 is immersed in the protective glass liquid. Refer to Figure 1 In [reference], the height of the protective glass liquid surface is greater than the height of the top surface of the platinum channel 2, so that the platinum channel 2 is immersed in the protective glass liquid, and the platinum channel 2 is protected by the protective glass liquid, avoiding the damage of small ions such as hydrogen ions in the high-temperature environment to the platinum channel 2.

[0045] In some embodiments, a communicating pipe 24 is provided in the part of the platinum channel 2 arranged in the accommodation space of the housing 5, and is communicated with the accommodation space of the housing 5 through the communicating pipe 24. When the platinum channel 2 is immersed in the protective glass liquid, one end of the opening of the communicating pipe 24 extends above the protective glass liquid surface, as Figure 1 shown, the opening of the communicating pipe 24 is higher than the protective glass liquid surface, preventing the protective glass liquid from entering the platinum channel 2 when processing the glass liquid in the platinum channel 2.

[0046] In some embodiments, one end of the communicating pipe 24 is connected to the platinum channel 2, and the other end of the communicating pipe 24 extends upward above the protective glass liquid surface and forms a bent portion with the opening facing downward, as Figure 1 shown.

[0047] In some embodiments, as Figure 2 and Figure 3 shown, a heating device 6 is arranged in the housing 5 to heat the protective glass liquid, and the platinum channel 2 is heated through the protective glass liquid. Compared with the prior art of directly arranging heating wires or heating rods outside the platinum channel 2, heating the platinum channel 2 by using the protective glass liquid makes the platinum channel 2 in a stable and uniform temperature field, so that the glass liquid to be processed is more uniform. In this embodiment, the setting mode of the heating device 6 can include being fixedly connected to the inner wall surface of the housing 5 such as a heating sheet, and being fixedly connected in the inner wall of the housing 5 and one end extending into the accommodation space such as a heating rod, etc.

[0048] In some embodiments, as Figure 2 and Figure 3 shown, the housing 5 includes a heat-insulating and heat-preserving material layer 51 and a refractory material 52. The heat-insulating and heat-preserving material layer 51 is arranged outside the refractory material 52, and the accommodation space is in contact with the refractory material 52. One end of the heating device 6 is arranged in the refractory material 52 and connected to the heat-insulating and heat-preserving material layer 51, and the other end of the heating device 6 extends out of the refractory material 52 and is located in the accommodation space. The heating device 6 is in the form of a plurality of heating rods.

[0049] In some embodiments, as Figure 1As shown, the processing device for melting glass further includes a bubbling device 3; the bubbling device 3 is communicated with the platinum channel 2 and is used for introducing gas into the platinum channel 2. By using the bubbling device to introduce gas into the platinum channel, the gas is injected into the glass liquid to be processed through the bubbling device to form large bubbles. During the rising process, the large bubbles increase in volume, carry away the tiny bubbles in the glass liquid to be processed, and at the same time accelerate the flow of the glass liquid to be processed, so that the defoaming performance of the glass liquid to be processed is increased, the uniformity is increased, and the process stability is increased.

[0050] In some embodiments, as Figure 1 and Figure 3 shown, the part of the platinum channel 2 arranged in the accommodation space of the housing 5 includes a rising channel 21, a top channel 22 and a descending channel 23 which are communicated in sequence; the bubbling device 3 is communicated with the rising channel 21. The arrow direction in the figure indicates the flow direction of the glass liquid to be processed in the platinum channel 2 during the process of processing the glass liquid. The glass liquid to be processed rises through the rising channel 21 on one side of the accommodation space and enters the top channel 22 at the top of the accommodation space, and then flows into the descending channel 23 on the other side of the accommodation space. The bubbling device 3 penetrates through the housing 5 and extends into the rising channel 21 to be communicated with the rising channel 21. The gas enters the rising channel 21 through the bubbling device 3, and the gas is introduced during the rising process of the glass liquid to be processed through the rising channel 21, and the defoaming and uniformity effects are better.

[0051] In some embodiments, the flow cross-sectional areas of the rising channel 21 and the descending channel 23 are the same, and the flow cross-sectional area of the top channel 22 is more than 1.5 times that of the rising channel 21. The flow cross-sectional shapes of the rising channel 21, the top channel 22 and the descending channel 23 can be circular or polygonal.

[0052] In some embodiments, as Figure 2 shown, one end of the platinum channel 2 is communicated with the melting side cavity, and the other end of the platinum channel 2 is communicated with the forming side cavity; the melting side cavity and the forming side cavity are communicated through a bypass channel 7; and a valve is arranged on the bypass channel 7. The arrangement of the bypass channel 7 can communicate the melting side cavity at one end of the platinum channel 2 with the forming side cavity at the other end through a bypass in the early stage of processing. The melting side cavity can be connected to a kiln to receive the glass liquid melted by the kiln, and then the glass liquid flows to the forming side cavity on the other side through the bypass channel 7. The height of the bypass channel 7 is such that the glass liquid in the melting side cavity can easily flow into the forming side cavity through the bypass channel 7. There is glass liquid at both ends of the platinum channel 2, and then the glass liquid gradually fills the platinum channel 2 from both ends of the platinum channel 2 and overflows into the accommodation space from the connection part of the platinum channel 2 and the accommodation space to form a protective glass liquid. When processing, the valve is closed to cut off the bypass channel 7, and the glass liquid to be processed can only flow through the platinum channel 2.

[0053] In some embodiments, asFigure 3 and Figure 4 As shown in Figure 4 , a melting-side cavity and a forming-side cavity are respectively provided with a melting-side stirring rod 1 and a forming-side stirring rod 4. The melting-side stirring rod 1 and the forming-side stirring rod 4 stir and homogenize the molten glass, and the flow rate of the molten glass can be controlled by changing the rotation speed of the stirring rod.

[0054] In some embodiments, as Figure 1 and Figure 2 shown, the part of the platinum channel 2 disposed in the accommodation space of the housing 5 includes a rising channel 21, a top channel 22, and a descending channel 23 that are sequentially connected; the rising channel 21 communicates with the melting-side cavity; the descending channel 23 communicates with the forming-side cavity; the melting-side cavity and the forming-side cavity are connected through a bypass channel 7; and a valve is provided in the bypass channel 7. The arrow direction in the figure indicates the flow direction of the glass to be processed during the process of processing the molten glass. The glass to be processed enters the rising channel 21 of the platinum channel 2 from the melting-side cavity, rises through the rising channel 21 on one side of the accommodation space in the platinum channel 2 and enters the top channel 22 at the top of the accommodation space, and then flows into the descending channel 23 on the other side of the accommodation space, and flows into the forming-side cavity through the descending channel 23 for subsequent processes. The setting of the bypass channel 7 can connect the melting-side cavity at one end of the platinum channel 2 and the forming-side cavity at the other end through a bypass in the early stage of processing. The melting-side cavity can be connected to a kiln to receive the molten glass melted by the kiln, and then the molten glass flows to the forming-side cavity on the other side through the bypass channel 7. The height of the bypass channel 7 is such that the molten glass in the melting-side cavity can easily flow through the bypass channel 7 into the forming-side cavity. There is molten glass at both ends of the platinum channel 2, and then the molten glass gradually fills the platinum channel 2 from both ends of the platinum channel 2 and overflows into the accommodation space from the connection between the platinum channel 2 and the accommodation space to form a protective molten glass. When processing, the valve is closed to cut off the bypass channel 7, and the glass to be processed can only flow through the platinum channel 2.

[0055] In some embodiments, the accommodation space of the housing 5 communicates with a negative-pressure vacuum device to form a negative pressure in the accommodation space of the housing 5. Before processing, the negative-pressure vacuum device evacuates the accommodation space, thereby reducing the air pressure in the platinum channel 2, raising the liquid level of the molten glass in the platinum channel 2 until the molten glass fills the platinum channel 2 and overflows from the connection with the accommodation space, causing the molten glass to flow into the accommodation space. During the processing, as Figure 1 shown, the negative-pressure vacuum device makes the absolute pressure in the housing 5 small. By adjusting the pressure difference between the inside and outside of the housing 5 through the negative-pressure vacuum device, the height of the liquid level of the glass to be processed in the platinum channel 2 is slightly lower than the upper top surface of the platinum channel 2. Due to the low absolute pressure of the liquid level of the glass to be processed, the volume of the tiny bubbles formed during the melting of the glass in the kiln expands and is more likely to be discharged from the glass to be processed.

[0056] In order to solve the problem that the platinum channel is easily eroded and damaged during the process of processing molten glass, the embodiments of the present disclosure provide a method for processing molten glass. The processing device for melting glass used includes a housing 5 and a platinum channel 2. An accommodation space isolated from the outside is formed inside the housing 5. At least a part of the platinum channel 2 is arranged in the accommodation space of the housing 5. The platinum channel 2 is used for the flow of the molten glass to be processed to process the molten glass to be processed. Among them, the platinum channel 2 communicates with the accommodation space of the housing 5 so that the molten glass in the platinum channel 2 can overflow into the accommodation space of the housing 5 to form a protective molten glass, and the part of the platinum channel 2 arranged in the accommodation space of the housing 5 is immersed in the protective molten glass. The method includes the following steps:

[0057] Fill the molten glass into the platinum channel 2, and make the molten glass in the platinum channel 2 overflow into the accommodation space of the housing 5 to form a protective molten glass, and immerse the part of the platinum channel 2 arranged in the accommodation space of the housing 5 in the protective molten glass. And

[0058] Fill the platinum channel 2 with the molten glass to be processed to process the molten glass to be processed.

[0059] By using the above method, an environment isolated from the outside can be formed in the accommodation space of the housing 5, and at least a part of the platinum channel 2 is arranged in the accommodation space of the housing 5 and the two are communicated. Before processing, the molten glass is overflowed into the accommodation space of the housing 5 through the platinum channel 2 to form a protective molten glass, and the platinum channel 2 is immersed in the protective molten glass. Refer to Figure 1 In, the height of the protective molten glass surface is greater than the top surface height of the platinum channel 2, so that the platinum channel 2 is immersed in the protective molten glass, and the protective molten glass is used to protect the platinum channel 2, avoiding the damage of small ions such as hydrogen ions in the high-temperature environment to the platinum channel 2.

[0060] In some embodiments, the processing device for melting glass used in the method further includes a heating device 6 and a bubbling device 3; the heating device 6 is arranged inside the housing 5, and the bubbling device 3 is communicated with the platinum channel 2. The method further includes the following steps:

[0061] Make a negative pressure be formed in the accommodation space of the housing 5.

[0062] Use the heating device 6 to heat the protective molten glass, and heat the platinum channel 2 through the protective molten glass; and

[0063] Use the bubbling device 3 to introduce gas into the platinum channel 2 for defoaming and stirring.

[0064] This method uses a heating device to heat the protective glass liquid, and heats the platinum channel through the protective glass liquid, so as to make the temperature of the platinum channel uniform. A bubbling device is used to introduce gas into the platinum channel, and the gas is injected into the glass liquid to be processed through the bubbling device to form large bubbles. The large bubbles expand in volume during the rising process, carry away the small bubbles in the glass liquid to be processed, and at the same time accelerate the flow of the glass liquid to be processed, increasing the defoaming performance and uniformity of the glass liquid to be processed, and improving the process stability.

[0065] In some embodiments, a processing device for melting glass includes a housing 5, a platinum channel 2, a heating device 6 and a bubbling device 3. The housing 5 includes a heat-insulating material layer 51 and a refractory material 52. The heat-insulating material layer 51 is disposed outside the refractory material 52, and a containment space isolated from the outside is formed within the refractory material 52. At least a portion of the platinum channel 2 is disposed within the containment space of the housing 5. The platinum channel 2 is for flowing the glass liquid to be processed to process the glass liquid to be processed. Among them, one end of the heating device 6 is disposed in the refractory material 52 and connected to the heat-insulating material layer 51, and the other end of the heating device 6 extends out of the refractory material 52 and is located in the containment space. The heating device 6 is in the form of a plurality of heating rods. The portion of the platinum channel 2 disposed within the containment space of the housing 5 includes a rising channel 21, a top channel 22 and a descending channel 23 that are sequentially connected; the bubbling device 3 passes through the housing 5 and communicates with the rising channel 21, and gas enters the rising channel 21 through the bubbling device 3. The top channel 22 is provided with a connecting pipe 24, which is connected to the containment space of the housing 5 through the connecting pipe 24, so that the glass liquid in the platinum channel 2 can overflow into the containment space of the housing 5 to form a protective glass liquid, and the portion of the platinum channel 2 disposed within the containment space of the housing 5 is immersed in the protective glass liquid. One end of the connecting pipe 24 is connected to the top channel 22 of the platinum channel 2. When the platinum channel 2 is immersed in the protective glass liquid, the other end of the connecting pipe 24 extends above the protective glass liquid surface and forms a curved portion with the opening facing downwards, such as Figure 1As shown, the communicating pipe 24 opens above the liquid level of the protective glass, preventing the protective glass liquid from entering the platinum channel 2 when processing the glass liquid in the platinum channel 2. The ascending channel 21 communicates with the melting-side cavity; the descending channel 23 communicates with the forming-side cavity; the melting-side cavity and the forming-side cavity are connected through a bypass channel 7; and a valve is provided in the bypass channel 7. The arrow direction in the figure indicates the flow direction of the glass liquid to be processed during the process of processing the glass liquid. The glass liquid to be processed enters the ascending channel 21 of the platinum channel 2 from the melting-side cavity, rises in the ascending channel 21 on one side of the accommodation space in the platinum channel 2 and enters the top channel 22 at the top of the accommodation space, then flows into the descending channel 23 on the other side of the accommodation space, and flows into the forming-side cavity through the descending channel 23 for subsequent processes. The setting of the bypass channel 7 can connect the melting-side cavity at one end of the platinum channel 2 and the forming-side cavity at the other end through a bypass at the early stage of processing. The melting-side cavity can be connected to a kiln to receive the glass liquid melted by the kiln, and then the glass liquid flows to the forming-side cavity on the other side through the bypass channel 7. The height of the bypass channel 7 is such that the glass liquid in the melting-side cavity can easily flow into the forming-side cavity through the bypass channel 7. There is glass liquid at both ends of the platinum channel 2, and then the glass liquid gradually fills the platinum channel 2 from both ends of the platinum channel 2 and overflows into the accommodation space from the connection between the platinum channel 2 and the accommodation space to form a protective glass liquid. When processing, the valve is closed to cut off the bypass channel 7, and the glass liquid to be processed can only flow through the platinum channel 2. A melting-side stirring rod 1 and a forming-side stirring rod 4 are respectively provided in the melting-side cavity and the forming-side cavity. The melting-side stirring rod 1 and the forming-side stirring rod 4 stir and homogenize the glass liquid, and the flow rate of the glass liquid can be controlled by changing the rotation speed of the stirring rod. The accommodation space of the housing 5 communicates with a negative-pressure vacuum device to form a negative pressure in the accommodation space of the housing 5. Before processing, the negative-pressure vacuum device evacuates the accommodation space, so that the air pressure in the platinum channel 2 decreases, the glass liquid level in the platinum channel 2 rises, until the platinum channel 2 is filled with glass liquid and overflows from the connection with the accommodation space, and the glass liquid flows into the accommodation space. During the processing, as Figure 1 shown, the negative-pressure vacuum device makes the absolute pressure in the housing 5 small. By adjusting the pressure difference between the inside and outside of the housing 5 by the negative-pressure vacuum device, the height of the glass liquid surface to be processed in the platinum channel 2 is slightly lower than the upper top surface of the platinum channel 2. Due to the low absolute pressure of the glass liquid surface to be processed, the volume of the tiny bubbles formed during the melting of the glass in the kiln expands, and it is easier to discharge from the glass liquid to be processed.

[0066] The working process of this embodiment is as follows: The high-temperature glass liquid melted by the kiln flows through the melting-side cavity to the platinum channel 2 and enters the ascending channel 21 of the platinum channel 2 in the housing 5. At the initial production, the valve of the bypass channel 7 is opened, and there is glass liquid at both the melting side and the forming side of the platinum channel 2.

[0067] The housing 5 is connected to a negative pressure vacuum device. The accommodation space of the housing 5 communicates with the inside of the platinum channel 2 through the connecting pipe 24 at the top of the platinum channel 2. The air pressure inside the platinum channel 2 decreases, causing the glass liquid level inside the platinum channel 2 to rise until the glass liquid fills the platinum channel 2 and overflows from the connecting pipe 24, making the glass liquid flow into the accommodation space constructed by the refractory material 52.

[0068] During the initial production, the absolute pressure inside the housing 5 is low, and the high-temperature glass liquid inside the platinum channel 2 overflows through the connecting pipe 24 of the top channel 22 into the accommodation space surrounded by the refractory material 52 of the closed housing 5. The liquid level height of the protective glass liquid is greater than the height of the top channel 22 of the platinum channel 2 and lower than the outlet of the connecting pipe 24.

[0069] During normal production, adjust the pressure difference between the inside and outside of the housing 5 to make the height of the glass liquid to be processed inside the platinum channel 2 slightly lower than the upper top surface of the top channel 22 of the platinum channel 2.

[0070] The glass liquid inside the platinum channel 2 is the glass liquid to be processed for production. The glass liquid outside the platinum channel 2 is the protective glass liquid, which can prevent the erosion of the wall of the platinum channel 2 by tiny ions. The heating device 6 heats the protective glass liquid to keep the platinum channel 2 in a stable and uniform temperature field state.

[0071] During normal production, the valve of the bypass channel 7 is closed, and the glass liquid to be processed flows through the platinum channel 2.

[0072] The melting-side stirring rod 1 and the forming-side stirring rod 4 stir and homogenize the glass liquid. By changing the rotation speed of the stirring rod, the flow rate of the glass liquid can be controlled.

[0073] The rising channel 21 of the platinum channel 2 is connected to a bubbling device 3. Clean gas is injected into the glass liquid through the bubbling device 3 to form bubbles. During the rising process of the large bubbles, their volume increases and takes away the tiny bubbles in the glass liquid, and at the same time accelerates the flow of the glass liquid.

[0074] When the glass liquid inside the platinum channel 2 passes through the top channel 22, due to the low absolute pressure of the glass liquid level and the low internal pressure of the glass liquid to be processed, the tiny bubbles formed during the melting process in the kiln expand in volume and are more likely to be discharged from the glass liquid.

[0075] So far, the embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed here based on the above description.

[0076] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or partial technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. A processing device for melting glass, characterized in that, Comprising: A housing (5), an accommodation space isolated from the outside is formed inside the housing (5), and the accommodation space of the housing (5) is communicated with a negative pressure vacuum device to form a negative pressure inside the accommodation space of the housing (5); And A platinum channel (2), at least a part of the platinum channel (2) is arranged inside the accommodation space of the housing (5); the platinum channel (2) is used for the flow of glass liquid to be processed to process the glass liquid to be processed; Wherein, the platinum channel (2) is communicated with the accommodation space of the housing (5), so that the glass liquid in the platinum channel (2) can overflow into the accommodation space of the housing (5) to form a protective glass liquid, and the part of the platinum channel (2) arranged inside the accommodation space of the housing (5) is immersed in the protective glass liquid.

2. The processing device for melting glass according to claim 1, characterized in that, A communication pipe (24) is arranged on the part of the platinum channel (2) arranged inside the accommodation space of the housing (5), and is communicated with the accommodation space of the housing (5) through the communication pipe (24).

3. The processing device for melting glass according to claim 1, characterized in that, A heating device (6) is arranged inside the housing (5) to heat the protective glass liquid, and the platinum channel (2) is heated through the protective glass liquid.

4. The processing device for molten glass according to claim 1, characterized in that, It further comprises a bubbling device (3); the bubbling device (3) is communicated with the platinum channel (2) and is used for introducing gas into the platinum channel (2).

5. The processing device for melting glass according to claim 4, characterized in that, The part of the platinum channel (2) arranged inside the accommodation space of the housing (5) comprises a rising channel (21), a top channel (22) and a descending channel (23) which are communicated in sequence; the bubbling device (3) is communicated with the rising channel (21).

6. The processing device for melting glass according to claim 1, characterized in that, One end of the platinum channel (2) is communicated with a melting side cavity, and the other end of the platinum channel (2) is communicated with a forming side cavity; the melting side cavity and the forming side cavity are communicated through a bypass channel (7); and a valve is arranged on the bypass channel (7).

7. The processing device for molten glass according to claim 1, characterized in that, The part of the platinum channel (2) arranged inside the accommodation space of the housing (5) comprises a rising channel (21), a top channel (22) and a descending channel (23) which are communicated in sequence; the rising channel (21) is communicated with the melting side cavity; the descending channel (23) is communicated with the forming side cavity; the melting side cavity and the forming side cavity are communicated through a bypass channel (7); and a valve is arranged on the bypass channel (7).

8. A method for treating molten glass, characterized in that, Using the glass melting treatment device according to any one of claims 1 to 7, comprising the following steps: [[ID= ​ ​ 9. The method for treating molten glass according to claim 8, characterized in that, ​ Create a negative pressure in the accommodation space of the housing (5); Use the heating device (6) to heat the protective glass liquid, and heat the platinum channel (2) through the protective glass liquid; and Use the bubbling device (3) to introduce gas into the platinum channel (2) for defoaming and stirring.

Images