Glass sphere manufacturing apparatus

Abstract

The application discloses a glass ball manufacturing device, which comprises a raw material supply pipe, a middle pipe, a discharge port and a disc-shaped part. The granular raw material is sprayed from the upper end of the raw material supply pipe under the pushing of the gas. The lower part of the middle pipe is sleeved on the upper part of the raw material supply pipe. The lower part of the middle pipe and the upper part of the raw material supply pipe define a first annular gap as an oxygen supply channel. The inner hole of the upper part of the middle pipe is located above the upper part of the raw material supply pipe to form a combustion cavity. The disc-shaped part is arranged on the upper end of the raw material supply pipe. The disc-shaped part has a plurality of material spraying holes penetrating in the axial direction, a gas supply cavity formed in the inside and a plurality of gas supply holes arranged on the periphery of the bottom. The granular raw material and the gas are sprayed upwards through the material spraying holes. The periphery of the upper end of each material spraying hole is arranged with a plurality of gas spraying holes which are arranged in the circumferential direction around the material spraying hole. Therefore, the oxygen in the gas supply cavity is sprayed from the upper end of the gas spraying hole through the gas spraying hole to mix with the gas and the granular raw material sprayed from the material spraying hole.

Description

Technical Field

[0001] This invention relates to the field of glass manufacturing technology, and in particular to a glass ball manufacturing apparatus. Background Technology

[0002] The basic process for manufacturing glass spheres is as follows: heating particulate raw materials (such as silica particles) by combustion of fuel gas to soften the surface of the raw materials and shape them into spheres, thereby forming glass spheres.

[0003] In the prior art, the apparatus for manufacturing glass spheres typically includes: a raw material supply pipe, a combustion chamber formed above the raw material supply pipe, a discharge port formed above the combustion chamber, an oxygen supply channel formed around the combustion chamber, the oxygen supply channel extending through the cavity wall of the combustion chamber to form an oxygen supply port, and a gas supply channel for supplying fuel gas. To avoid using other gases as the driving force to push the particulate raw material upward, the raw material supply pipe is also used as a gas supply channel. Thus, the fuel gas and the particulate raw material are pre-mixed, and the pressure of the fuel gas is used to push the particulate raw material upward to transport it to the combustion chamber. At the same time, the fuel gas also enters the combustion chamber, while oxygen enters the combustion chamber laterally through the oxygen supply port and mixes with the fuel gas, thereby burning and heating the particulate raw material to spheroidize it.

[0004] The existing apparatus for manufacturing glass spheres has the following drawbacks:

[0005] Because oxygen enters the combustion chamber from the side, it is difficult for the oxygen to mix fully with the combustion gas inside the combustion chamber, which makes it difficult for the internal combustion to be complete. As a result, it is difficult to fully spheroidize the particulate material inside. In addition, the oxygen and combustion gas that have not been mixed and burned may mix and form combustion at the discharge port. This causes the spheroidized particles to be spheroidized again by reheating, which leads to the deterioration of the glass beads.

[0006] In addition, since the upper end of the raw material supply pipe is an open port, oxygen may flow backward into the supply pipe and then mix with the fuel gas in the supply pipe and burn, thus producing an undesirable "backfire" phenomenon. Summary of the Invention

[0007] To address the aforementioned technical problems in the prior art, embodiments of the present invention provide a glass ball manufacturing apparatus.

[0008] To solve the above-mentioned technical problems, the technical solution adopted in the embodiments of the present invention is as follows:

[0009] A glass bead manufacturing apparatus, comprising:

[0010] The raw material supply pipe is vertically arranged, and the particulate raw material moves upward along the raw material supply pipe under the propulsion of the gas and is ejected from the upper end of the raw material supply pipe;

[0011] The lower part of the intermediate tube is sleeved outside the upper part of the raw material supply tube. A first annular gap is defined between the lower part of the intermediate tube and the upper part of the raw material supply tube to serve as an oxygen supply channel. The inner hole of the upper part of the intermediate tube is located above the raw material supply tube to form a combustion chamber. The particulate raw material and fuel gas sprayed from the upper end of the raw material supply tube enter the combustion chamber.

[0012] The discharge port is formed above the combustion chamber;

[0013] A disc-shaped component is disposed at the upper port of the raw material supply pipe, and blocks the upper port of the raw material supply pipe and the upper port of the first annular gap; wherein:

[0014] The disc-shaped component has multiple axially penetrating spray holes, an internally formed air supply chamber, and multiple air supply holes located on the bottom periphery for connecting the air supply chamber and the oxygen supply channel; the particulate raw material and the fuel gas are sprayed upward through the spray holes, and oxygen from the oxygen supply channel enters the air supply chamber through the air supply holes.

[0015] Each nozzle has multiple air jets arranged around its upper periphery, and these air jets extend into the air supply chamber. Oxygen in the air supply chamber is ejected through the air jets from the upper end of the air jets to mix with the fuel gas and particulate feed ejected from the nozzle.

[0016] Preferably, the disc-shaped component includes a disc-shaped body and a cap fastened to the disc-shaped body;

[0017] Multiple columns are formed on the disc-shaped body, and the upper end of each column protrudes from the cover through the cover. The spray hole penetrates the bottom of the disc-shaped body and the upper end of the column, so that the gas and particulate raw material are sprayed out from the upper end of the column.

[0018] The air supply chamber is defined between the cap and the disc-shaped body;

[0019] A conical platform is formed on the outer periphery of the column, and the upper end of the air jet hole extends to the slope of the conical platform;

[0020] The jet orifice extends obliquely such that the upper port of the jet orifice has an oblique orientation, thereby causing the oxygen ejected from the upper port of the jet orifice to flow in a spiral.

[0021] Preferably, the glass manufacturing apparatus further includes an outer tube, which is sleeved outside the intermediate tube. A second annular gap is defined between the outer tube and the intermediate tube to serve as a gas supply channel for isolation. The intermediate tube, which corresponds to the upper part or above the combustion chamber, has multiple air jet slits on its wall. The multiple air jet slits penetrate the wall of the intermediate tube and are arranged circumferentially. The multiple air jet slits extend obliquely relative to the radial direction, so that the isolation gas in the gas supply channel enters the intermediate tube through the air jet slits and flows circumferentially along the wall of the intermediate tube.

[0022] Preferably, the jet slits comprise two sets arranged axially spaced apart.

[0023] Preferably, a tapered guide hole section is formed at the lower part of the spray hole.

[0024] Preferably, a cooling chamber is attached to the upper end of the intermediate tube, and the discharge port is attached above the cooling chamber.

[0025] Preferably, a first lateral air supply mechanism is installed on the lower periphery of the raw material supply pipe;

[0026] The first lateral gas supply mechanism has a first annular gas supply chamber surrounding the raw material supply pipe, and a plurality of first gas supply holes are arranged on the pipe wall of the raw material supply pipe corresponding to the first annular gas supply chamber. The first annular gas supply chamber is used to supply fuel gas.

[0027] Preferably, the lower end of the intermediate tube is shorter than the raw material supply tube, and the lower end of the intermediate tube is sealed by a first end cap;

[0028] A second lateral air supply mechanism is installed around the periphery of the intermediate pipe;

[0029] The second lateral air supply mechanism has a second annular air supply chamber surrounding the intermediate tube, and a plurality of second air supply holes are arranged on the tube wall of the intermediate tube corresponding to the second annular air supply chamber. The second annular air supply chamber is used to supply oxygen.

[0030] Preferably, the lower and upper ends of the outer tube are both shorter than the lower and upper ends of the intermediate tube; the lower and upper ends of the outer tube are sealed by a second end cap and a third end cap, respectively;

[0031] A third lateral air supply mechanism is installed around the outer tube;

[0032] The third lateral air supply mechanism has a third annular air supply chamber surrounding the outer tube, and a plurality of third air supply holes are arranged on the tube wall of the outer tube corresponding to the third annular air supply chamber. The third annular air supply chamber is used to provide isolation gas.

[0033] Preferably, the isolation gas includes oxygen.

[0034] Compared with the prior art, the beneficial effects of the glass ball manufacturing apparatus disclosed in this invention are:

[0035] The glass sphere manufacturing apparatus provided by this invention can fully mix oxygen with the combustion gas in the inner layer of the combustion chamber, thereby enabling the combustion gas to be fully burned and the raw material particles in the inner layer to be fully spheroidized.

[0036] The overview of various implementations or examples of the technology described in this invention is not a complete disclosure of the full scope or all features of the disclosed technology. Attached Figure Description

[0037] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to explain embodiments of the invention. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0038] Figure 1 This is a schematic diagram of the glass ball manufacturing apparatus provided in an embodiment of the present invention.

[0039] Figure 2 for Figure 1 A magnified view of part A.

[0040] Figure 3 This is a top view of the disc-shaped component.

[0041] Figure 4 for Figure 1 BB-direction sectional view.

[0042] Figure label:

[0043] 10-Raw material supply pipe; 20-Intermediate pipe; 21-Combustion chamber; 22-Cooling chamber; 23-Discharge port; 24-Air jet gap; 30-Disc-shaped component; 31-Disc-shaped main body; 311-Air supply hole; 312-Column; 32-Cap; 321-Conical platform; 33-Injection hole; 331-Conical guide hole section; 34-Air supply chamber; 35-Air jet hole; 40-Outer pipe; 51-Oxygen supply channel; 52-Isolation gas supply channel; 61-First lateral air supply mechanism; 611-First annular air supply chamber; 612-First air supply hole; 62-Second lateral air supply mechanism; 621-Second annular air supply chamber; 622-Second air supply hole; 63-Third lateral air supply mechanism; 631-Third annular air supply chamber; 632-Third air supply hole; 71-First end cap; 72-Second end cap; 73-Third end cap. Detailed Implementation

[0044] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0046] An embodiment of the present invention discloses a glass ball manufacturing apparatus, which uses gas combustion in a combustion chamber 21 to heat raw material particles such as silicon dioxide, thereby softening the raw material particles and spherizing them to produce glass balls.

[0047] like Figures 1 to 4 As shown, the device includes: a raw material supply pipe 10, an intermediate pipe 20, an outer pipe 40, a disc-shaped component 30, a cooling chamber 22, a discharge port 23, a first lateral air supply mechanism 61, a second lateral air supply mechanism 62, and a third lateral air supply mechanism 63.

[0048] The raw material supply pipe 10 is arranged vertically, with its lower end serving as the feed inlet. Raw material particles enter the raw material supply pipe 10 through the feed inlet and move upwards along the pipe. An intermediate pipe 20 is arranged coaxially with the raw material supply pipe 10, with its lower part fitted over the upper part of the pipe. Thus, the upper end of the raw material supply pipe 10 is located within the intermediate pipe 20, and the inner hole of the intermediate pipe 20 above the raw material supply pipe 10 forms a combustion chamber 21. A first annular gap is defined between the lower part of the intermediate pipe 20 and the upper part of the raw material supply pipe 10, serving as an oxygen supply channel 51. A first end cap 71 is provided at the lower end of the intermediate pipe 20 to seal its lower end. The outer tube 40 and the intermediate tube 20 are arranged coaxially. The outer tube 40 is sleeved outside the intermediate tube 20. A second annular gap is defined between the outer tube 40 and the intermediate tube 20. The second annular gap is used as an isolation gas supply channel 52. The lower end and the upper end of the outer tube 40 are shorter than the lower end and the upper end of the intermediate tube 20, respectively. A second end cap 72 is provided at the lower end of the outer tube 40 to seal the lower port of the outer tube 40. A third end cap 73 is provided at the upper end of the outer tube 40 to seal the upper port of the outer tube 40.

[0049] The first lateral air supply mechanism 61 is disposed at the lower part of the raw material supply pipe 10. The first lateral air supply mechanism 61 has a first annular air supply chamber 611 surrounding the periphery of the raw material supply pipe 10. A plurality of first air supply holes 612 are arranged on the pipe wall of the raw material supply pipe 10 corresponding to the first annular air supply chamber 611. Gas is supplied to the first annular air supply chamber 611 from the joint of the first lateral air supply mechanism 61. The gas enters the raw material supply pipe 10 through the first air supply holes 612. The gas mixes with the raw material particles in the raw material supply pipe 10 and is pushed upward by the air pressure. The gas is then ejected from the upper end of the raw material supply pipe 10 along with the raw material particles and enters the combustion chamber 21.

[0050] The second lateral air supply mechanism 62 is disposed around the intermediate pipe 20. The second lateral air supply mechanism 62 has a second annular air supply chamber 621 surrounding the intermediate pipe 20. A plurality of second air supply holes 622 are arranged on the pipe wall of the intermediate pipe 20 corresponding to the second annular air supply chamber 621. Oxygen is supplied to the second annular air supply chamber 621 from the joint of the second lateral air supply mechanism 62. The oxygen enters the oxygen supply channel through the second air supply holes 622 and moves in the direction of the movement.

[0051] The third lateral gas supply mechanism 63 is disposed around the outer tube 40. The third lateral gas supply mechanism 63 has a third annular gas supply chamber 631 surrounding the outer tube 40. A plurality of third gas supply holes 632 are arranged on the tube wall of the outer tube 40 corresponding to the third annular gas supply chamber 631. Isolation gas is supplied to the third annular gas supply chamber 631 from the connector of the third lateral gas supply mechanism 63. The isolation gas enters the isolation gas supply channel 52 through the third gas supply hole 632. The isolation gas can be an inert gas or oxygen. The temperature of the isolation gas supplied to the third annular gas chamber is lower than the temperature of the oxygen supplied to the second annular gas chamber.

[0052] A covering component is installed at the upper middle part. The lower middle part of the covering component forms an expansion structure for cooling the spheroidized glass spheres. A bend is formed at the top of the covering component, which forms a discharge port 23. The cooled glass spheres are discharged from the discharge port 23 under the push of the gas.

[0053] like Figure 4 and Figure 1 As shown, a plurality of jet slits 24 are provided on the wall of the intermediate pipe 20 corresponding to the upper part or above the combustion chamber 21. The plurality of jet slits 24 penetrate the wall of the intermediate pipe 20 and are arranged circumferentially. The plurality of jet slits 24 extend obliquely relative to the radial direction, so that the isolation gas of the isolation gas supply channel 52 enters the intermediate pipe 20 through the jet slits 24 and flows circumferentially along the wall of the intermediate pipe 20, i.e., a spiral flow channel. Furthermore, since the outlet of the jet slit 24 is a slit structure, the airflow (isolation gas) ejected from the jet slit 24 is a sheet-like airflow. This airflow makes the space inside the airflow form a gas isolation with the inner wall of the outer pipe 40.

[0054] like Figure 2 and Figure 3 As shown, a disc-shaped component 30 is installed at the upper port of the raw material supply pipe 10. The disc-shaped component 30 simultaneously encloses the upper port of the raw material supply pipe 10 and the upper port of the oxygen supply channel 51. The disc-shaped component 30 includes a disc-shaped body 31 and a cap 32.

[0055] The bottom of the disc-shaped main body 31 has an annular mounting groove, into which the upper end of the raw material supply pipe 10 is inserted. The upper part of the disc-shaped main body 31 has multiple circumferentially arranged columns 312, each column 312 having a through-hole 33. The lower end of the through-hole 33 extends to the bottom of the disc-shaped main body 31, and the upper end extends to the upper end of the column 312. Thus, the fuel gas carrying particulate feed material passes through the through-hole 33 and is subsequently ejected from the upper end of the column 312 into the combustion chamber 21. Preferably, the lower part of the through-hole 33 has a tapered guide section 331, which facilitates the smooth entry of the fuel gas carrying particulate feed material into the through-hole 33.

[0056] The cover 32 is fastened to the disc-shaped body 31, and the spray hole 33 passes through the cover 32 and protrudes from the cover 32; there is a gap between the cover 32 and the disc-shaped body 31, which forms an air supply chamber 34; multiple circumferentially arranged air supply holes 311 are opened at the edge where the disc-shaped body 31 meets the oxygen supply channel 51, and the two ends of the air supply holes 311 respectively connect to the oxygen supply channel 51 and the air supply chamber 34, so that the oxygen in the oxygen supply channel 51 can enter the air supply chamber 34 through the air supply holes 311.

[0057] Each column 312 has multiple jet holes 35 arranged around its upper periphery, extending into the supply chamber. These jet holes 35 are circumferentially arranged around the supply chamber 34, allowing oxygen from the supply chamber 34 to be ejected through the jet holes 35 surrounding each injection hole 33. This results in an oxygen flow above each injection hole 33, which mixes with the combustion gas ejected from each injection hole 33 and then burns in the combustion chamber 21 to spheroidize the raw material particles. Therefore, oxygen is thoroughly mixed with the combustion gas and fully combusted in both the radial outer layer and the radial outer layer of the combustion chamber 21.

[0058] In some preferred embodiments, the jet orifice 35 extends obliquely such that its upper port has an oblique orientation, thereby causing the oxygen ejected from the upper port of the jet orifice 35 to flow in a spiral manner. The advantages of the oxygen ejected from the jet orifice 35 flowing in a spiral manner are twofold: firstly, it allows for more thorough mixing of the oxygen with the combustion gas, thus promoting complete combustion; secondly, the oxygen in the spiral flow channel causes the particulate material to rotate, thereby preventing adhesion between the particulate material and adjacent particles during heating and spheroidizing.

[0059] In some preferred embodiments, a conical platform 321 is formed on the outer periphery of the column 312 cap 32, and the upper end of the air jet 35 extends to the slope of the conical platform 321. The advantage of providing the conical platform 321 is that fine particulate residue will not fall around the spray hole 33 and block the air jet 35.

[0060] The advantage of allowing the gas and particulate raw materials to be ejected from the injection hole 33 and the oxygen to be ejected from the jet hole 35 is that it can effectively prevent oxygen from entering the raw material supply pipe 10 through the disc-shaped component 30 and causing a "backfire" phenomenon. This is because both oxygen and gas are ejected through the small holes at a large flow rate and pressure, which can effectively prevent the gas from flowing backward.

[0061] The glass ball, which is spherical and burns in the combustion chamber 21, moves upward. At this time, the isolation gas that enters the upper part of the combustion chamber 21 through the jet gap 24 moves circumferentially along the chamber wall. This gas makes the area near the chamber wall form an isolation zone, thereby effectively preventing the glass ball from sticking to the chamber wall.

[0062] In addition, since the fuel is fully burned in the combustion chamber, there is almost no gas at the discharge port 23, which can effectively prevent the glass ball from being spherical again at the discharge port 23.

[0063] Furthermore, although exemplary embodiments have been described in this invention, their scope includes any and all embodiments based on the invention that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, and such examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the full scope of the following claims and their equivalents.

[0064] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments can be used by those skilled in the art when reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the invention. This should not be construed as an intention that a disclosed feature, which is not claimed, is necessary for any claim. Rather, the subject matter of the invention may be less than all the features of the particular disclosed embodiments. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is independently considered as a separate embodiment, and these embodiments are contemplated as being able to be combined with each other in various combinations or arrangements. The scope of the invention should be determined by reference to the appended claims and the full scope of their equivalents.

[0065] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A glass bead manufacturing apparatus, characterized in that, include: The raw material supply pipe is vertically arranged, and the particulate raw material moves upward along the raw material supply pipe under the propulsion of the gas and is ejected from the upper end of the raw material supply pipe; The lower part of the intermediate tube is sleeved outside the upper part of the raw material supply tube. A first annular gap is defined between the lower part of the intermediate tube and the upper part of the raw material supply tube to serve as an oxygen supply channel. The inner hole of the upper part of the intermediate tube is located above the raw material supply tube to form a combustion chamber. The particulate raw material and fuel gas sprayed from the upper end of the raw material supply tube enter the combustion chamber. The discharge port is formed above the combustion chamber; A disc-shaped component is disposed at the upper port of the raw material supply pipe, and blocks the upper port of the raw material supply pipe and the upper port of the first annular gap; wherein: The disc-shaped component has multiple axially penetrating spray holes, an internally formed air supply chamber, and multiple air supply holes located on the bottom periphery for connecting the air supply chamber and the oxygen supply channel; the particulate raw material and the fuel gas are sprayed upward through the spray holes, and oxygen from the oxygen supply channel enters the air supply chamber through the air supply holes. Each nozzle has multiple air jets arranged around its upper periphery, and these air jets extend into the air supply chamber. Oxygen in the air supply chamber is ejected through the air jets from the upper end of the air jets to mix with the fuel gas and particulate feed ejected from the nozzle.

2. The glass ball manufacturing apparatus according to claim 1, characterized in that, The disc-shaped component includes a disc-shaped body and a cover fastened to the disc-shaped body; Multiple columns are formed on the disc-shaped body, and the upper end of each column protrudes from the cover through the cover. The spray hole penetrates the bottom of the disc-shaped body and the upper end of the column, so that the gas and particulate raw material are sprayed out from the upper end of the column. The air supply chamber is defined between the cap and the disc-shaped body; A conical platform is formed on the outer periphery of the column, and the upper end of the air jet hole extends to the slope of the conical platform; The jet orifice extends obliquely such that the upper port of the jet orifice has an oblique orientation, thereby causing the oxygen ejected from the upper port of the jet orifice to flow in a spiral.

3. The glass ball manufacturing apparatus according to claim 2, characterized in that, The glass ball manufacturing apparatus further includes an outer tube, which is sleeved outside the intermediate tube. A second annular gap is defined between the outer tube and the intermediate tube to serve as an isolation gas supply channel. Multiple air jet slits are formed on the wall of the intermediate tube corresponding to the upper part or above the combustion chamber. The multiple air jet slits penetrate the wall of the intermediate tube and are arranged circumferentially. The multiple air jet slits extend obliquely relative to the radial direction, so that the isolation gas in the isolation gas supply channel enters the intermediate tube through the air jet slits and flows circumferentially along the wall of the intermediate tube.

4. The glass ball manufacturing apparatus according to claim 3, characterized in that, The jet slits comprise two sets arranged at axial intervals.

5. The glass ball manufacturing apparatus according to claim 2, characterized in that, A tapered guide hole section is formed at the lower part of the spray nozzle.

6. The glass sphere manufacturing apparatus according to claim 1, characterized in that, A cooling chamber is attached to the upper end of the intermediate tube, and the discharge port is attached above the cooling chamber.

7. The glass ball manufacturing apparatus according to claim 3, characterized in that, The lower periphery of the raw material supply pipe is equipped with a first lateral air supply mechanism; The first lateral gas supply mechanism has a first annular gas supply chamber surrounding the raw material supply pipe, and a plurality of first gas supply holes are arranged on the pipe wall of the raw material supply pipe corresponding to the first annular gas supply chamber. The first annular gas supply chamber is used to supply fuel gas.

8. The glass ball manufacturing apparatus according to claim 3, characterized in that, The lower end of the intermediate tube is shorter than the raw material supply tube, and the lower end of the intermediate tube is sealed by the first end cap. A second lateral air supply mechanism is installed around the periphery of the intermediate pipe; The second lateral air supply mechanism has a second annular air supply chamber surrounding the intermediate tube, and a plurality of second air supply holes are arranged on the tube wall of the intermediate tube corresponding to the second annular air supply chamber. The second annular air supply chamber is used to supply oxygen.

9. The glass ball manufacturing apparatus according to claim 3, characterized in that, The lower and upper ends of the outer tube are both shorter than the lower and upper ends of the middle tube; the lower and upper ends of the outer tube are sealed by a second end cap and a third end cap, respectively. A third lateral air supply mechanism is installed around the outer tube; The third lateral air supply mechanism has a third annular air supply chamber surrounding the outer tube, and a plurality of third air supply holes are arranged on the tube wall of the outer tube corresponding to the third annular air supply chamber. The third annular air supply chamber is used to provide isolation gas.

10. The glass ball manufacturing apparatus according to claim 3, characterized in that, The isolation gas includes oxygen.

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