Negative pressure clarification platinum channel device

Abstract

The utility model relates to the field of glass production, in particular to a negative pressure clarification platinum channel device which comprises a horizontally arranged pipeline section and a horizontally arranged clarification section communicated with the pipeline section, and the top of the clarification section is higher than that of the pipeline section; the clarifying section is connected with a negative pressure pipeline through a first pipeline, and the negative pressure pipeline comprises a contraction section, a waiting section and a diffusion section which are communicated in sequence; and the first pipeline is communicated with the waiting part. In the utility model, the negative pressure pipeline is directly connected with the kiln or is connected with the kiln through the heat exchanger, and by utilizing the Venturi tube principle, when gas generated in the kiln flows through the negative pressure pipeline, the flow speed at the throat part is large, the pressure is small and is smaller than the pressure of the upper space of the clarification section, so that the clarification section generates negative pressure; the discharge of bubbles of the glass solution passing through the clarification section is realized; compared with a traditional negative pressure clarification mode, the use of equipment such as a negative pressure pump is omitted, negative pressure is generated by gas flow generated in the kiln, and corrosion to the equipment such as the negative pressure pump is avoided.

Description

Technical Field

[0001] This utility model relates to the field of glass production technology, and in particular to a negative pressure clarification platinum channel device. Background Technology

[0002] During the glass melting process, it is necessary to remove all physically dissolved gases and tiny air bubbles mixed in with the glass from the carrier glass melt to obtain a high-quality solution for producing high-quality carrier glass. This process is called glass clarification. The furnace process, after melting the batch into glass, generates a large amount of volatiles such as bubbles. The glass melt needs to be sent to a glass melt channel for clarification and adjustment before being sent to the forming process to be made into carrier glass or other semi-finished products. Finally, it undergoes post-processing to become the finished product. During the clarification process, the glass melt simultaneously undergoes homogenization, clarification, and defoaming.

[0003] Currently, the high temperatures required for the clarification and defoaming process place high demands on the physical structure and service life of the clarification pipe section of the glass melt channel. Prolonged operation at high temperatures can severely impact the service life of the glass melt channel itself, and improper use can even cause deformation and collapse of the top of the clarification pipe section. Furthermore, as described in patent CN202210894838.4, a platinum channel negative pressure clarification device and its clarification method discharge gas from the glass melt through negative pressure. However, the generation of this gas requires a negative pressure pump. The gas generated from the glass melt is corrosive, and its long-term flow through the negative pressure pump can corrode the pump's internal components, affecting the service life of the pump and the systems connected to it, thus severely impacting the production process of the carrier glass. Therefore, how to avoid corrosive damage to the equipment while clarifying the glass melt is a problem that those skilled in the art need to consider. Utility Model Content

[0004] The purpose of this invention is to provide a negative pressure clarification platinum channel device to solve the problems in the prior art where the discharged gas causes corrosion to the negative pressure pump and other gases during the clarification of glass solution.

[0005] The technical solution of this utility model is: a negative pressure clarification platinum channel device, comprising a horizontally arranged pipe section and a horizontally arranged clarification section connected to the pipe section, wherein the top of the clarification section is higher than the top of the pipe section;

[0006] The clarification section is connected to a negative pressure pipe via a first pipe. The negative pressure pipe includes a contraction section, a waiting section, and a diffusion section connected in sequence. The first pipe is connected to the waiting section.

[0007] Preferably, both the pipe section and the clarification section are cylindrical, and the diameter of the clarification section is larger than the diameter of the pipe section.

[0008] Preferably, the plane containing the cross-section of the inner wall at the lower end of the clarification section coincides with the plane containing the inner wall at the lower end of the pipe section.

[0009] Preferably, the side of the contraction section away from the back section is connected to the kiln and vents the gas inside the kiln.

[0010] Preferably, the pipe section, the clarification section, and the negative pressure pipe are all made of platinum.

[0011] Preferably, an insulation layer is provided on the outer side of the clarification section.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] (1) In this utility model, the negative pressure pipe is directly connected to the kiln or connected through a heat exchanger. Utilizing the Venturi principle, when the gas generated in the kiln flows through the negative pressure pipe, the flow velocity is high and the pressure is low at the throat, which is less than the pressure in the upper space of the refining section, so that the refining section generates negative pressure and realizes the discharge of bubbles in the glass solution through the refining section.

[0014] Compared to the traditional negative pressure clarification method, the use of negative pressure pumps and other equipment is eliminated. The negative pressure is generated by the gas flow in the kiln. The gas in the kiln is mixed with the gas discharged during clarification and can be treated simultaneously, which increases the utilization efficiency of waste gas and avoids corrosion of negative pressure pumps and other equipment. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the negative pressure clarification platinum channel device of this utility model;

[0017] Figure 2 This is a top view of the negative pressure clarification platinum channel device of this utility model;

[0018] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure at point AA.

[0019] Among them: pipe section 1, clarifying section 2, cavity 2a, negative pressure pipe 3, contraction section 31, waiting section 32, diffusion section 33, and first pipe 4. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to specific embodiments:

[0021] like Figures 1-3As shown, this utility model is applied to the clarification of molten glass during the glass manufacturing process. A negative pressure pipe is connected to a furnace. Gas generated in the melting furnace flows through the negative pressure pipe. Through the structural design of the negative pressure pipe, the gas velocity increases and the pressure decreases when it flows through the throat. A negative pressure is generated when the first pipe connects to the clarification section, creating a pressure difference between the throat and the clarification section. When the molten glass flows through the clarification section, a cavity connected to the first pipe is formed above the clarification section. Due to the aforementioned pressure difference, air bubbles in the molten glass are discharged into this cavity and then from the first pipe to the negative pressure pipe, finally exiting through the negative pressure pipe for purification and other treatments. Specifically:

[0022] A negative pressure clarification platinum channel device includes a horizontally arranged pipe section 1 and a horizontally arranged clarification section 2 connected to the pipe section 1, with the top of the clarification section 2 higher than the top of the pipe section 1. In this embodiment, the pipe section 1 is connected to a glass melting furnace (not shown in the figure), and when molten glass enters the pipe section 1, the pipe section 1 is completely filled. The top of the clarification section 2 is set higher than the pipe section 1, so that when the glass solution flows through, there is a certain distance between the liquid surface and the top of the clarification section 2, forming a cavity 2a, which exposes a larger liquid surface area to the first pipe 4, thereby increasing the efficiency of bubble removal.

[0023] In a preferred embodiment, both pipe section 1 and clarifying section 2 are cylindrical. The cylindrical shape facilitates the flow of the molten glass. Furthermore, since both pipe section 1 and clarifying section 2 are made of platinum or Pt group metals, their cylindrical shape makes real-time molding and manufacturing more convenient. However, the diameter of clarifying section 2 is larger than the diameter of pipe section 1. Preferably, the plane containing the cross-section of the lower inner wall of clarifying section 2 coincides with the plane containing the lower inner wall of pipe section 1. This makes the flow of the molten glass more stable. In other preferred embodiments, the diameter of clarifying section 2 is equal to the radius of pipe section 1, allowing for a larger exposed surface area when the molten glass flows through clarifying section 2. This also ensures a larger space above the surface of the molten glass in clarifying section 2, preventing the stripping solution from being drawn into the first pipe 4 when negative pressure is generated.

[0024] The clarification section 2 is connected to a negative pressure pipe 3 via a first pipe 4. The negative pressure pipe 3 includes a contraction section 31, a throat section 32, and a diffuser section 33 connected in sequence. The first pipe 4 is connected to the throat section 32. In this embodiment, the side of the contraction section 31 furthest from the throat section 32 is connected to the kiln (not shown in the figure), either directly or through a heat exchange device. The contraction section 31 is funnel-shaped, with the larger end furthest from the throat connected to the kiln (not shown in the figure). The diffuser section 33 is funnel-shaped, with its smaller end connected to the throat, and its larger end, depending on the process design, can be connected to a subsequent gas purification device. The throat is cylindrical and horizontally positioned; the first pipe 4 is vertically positioned, with its upper end connected to the throat.

[0025] The negative pressure pipe 3 is made of platinum or Pt group metals to avoid the effects of corrosive gases in the glass solution, and also has better high temperature resistance to ensure the stability of use.

[0026] In a preferred embodiment, an insulation layer is provided on the outer side of the clarification section 2. The insulation layer not only serves to keep the temperature warm, but also provides support for the clarification section 2, increasing its strength and preventing deformation.

[0027] In this embodiment, the principle of negative pressure clarification of the glass solution is as follows:

[0028] Pipe section 1 is connected to the molten glass furnace (not shown in the figure) and is located below the stripping solution. The end of the receiving section away from the throat is connected to the molten glass furnace via a heat exchanger, and the connection point is located above the liquid surface of the solution inside the furnace (not shown in the figure). During operation, the molten glass solution flows through pipe section 1 to the refining section 2, and then flows out through the pipe. When flowing through the refining section 2, the solution cannot completely fill the refining section 2, and a cavity 2a is formed between the liquid surface and the top of the refining section 2. The gas generated inside the furnace (not shown in the figure) passes through the receiving section, the throat, and the diffuser section 33 in sequence, and is finally discharged. When the gas enters the throat, the intercepting area gradually decreases, the flow velocity increases, and the pressure decreases. That is, the pressure at the end of the first pipe 4 near the throat decreases and is less than the pressure inside the cavity 2a above the refining section 2, forming a negative pressure inside the cavity 2a. This causes the gas in the solution flowing through the refining section 2 to be precipitated into the cavity 2a, and then discharged through the first pipe 4 to the throat, where it mixes with the gas flowing out of the furnace (not shown in the figure) before being discharged.

[0029] It should be noted that the gas on the surface of the glass solution is a fixed vapor, and its pressure is only related to the glass solution formula. Therefore, the pressure in the upper cavity 2a of the refining section 2 is basically the same as the gas pressure in the molten glass furnace (not shown in the figure); when the gas flows through the throat in the furnace (not shown in the figure), the pressure decreases and is necessarily less than the pressure in the upper cavity 2a of the refining section 2, forming a pressure difference.

[0030] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A negative pressure clarification platinum channel device, characterized in that: It includes a horizontally arranged pipe section and a horizontally arranged clarifying section connected to the pipe section, wherein the top of the clarifying section is higher than the top of the pipe section; The clarification section is connected to a negative pressure pipe via a first pipe. The negative pressure pipe includes a contraction section, a waiting section, and a diffusion section connected in sequence. The first pipe is connected to the waiting section.

2. The negative pressure clarification platinum channel device according to claim 1, characterized in that: Both the pipe section and the clarification section are cylindrical, and the diameter of the clarification section is larger than the diameter of the pipe section.

3. The negative pressure clarification platinum channel device according to claim 2, characterized in that: The plane containing the cross-section of the inner wall at the lower end of the clarification section coincides with the plane containing the inner wall at the lower end of the pipe section.

4. The negative pressure clarification platinum channel device according to claim 1, characterized in that: The side of the contraction section furthest from the back section is connected to the kiln and vents the gas inside the kiln.

5. The negative pressure clarification platinum channel device according to claim 1, characterized in that: The pipeline section, clarification section, and negative pressure pipeline are all made of platinum.

6. The negative pressure clarification platinum channel device according to claim 1, characterized in that: An insulation layer is provided on the outside of the clarification section.

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