Graphite furnace eye plugging device for industrial silicon smelting

Abstract

The utility model provides a graphite furnace eye plugging device for industrial silicon smelting, and relates to the technical field of industrial silicon production, and the graphite furnace eye plugging device comprises a ball pushing main body used for pushing an eye plugging mud ball to plug a furnace eye; an accommodating groove and an avoiding hole which are communicated with each other are formed in the ball pushing main body, and the accommodating groove and the avoiding hole penetrate through the ball pushing main body in the length direction; the diameter of the containing groove is larger than that of the receding hole, and a shoulder is formed at the joint of the containing groove and the receding hole. The connecting piece is detachably connected with the containing groove, and one end of the connecting piece can penetrate through the avoiding hole to be exposed out of the ball pushing main body; the shoulder is used for limiting the length of one end of the connecting piece exposed out of the ball pushing main body; the push ball main body is made of graphite, so that impurity iron cannot be introduced into silicon water. The push ball main body and the waste electrode are the same in shape and material, and the push ball main body can be manufactured by using the waste electrode used after the furnace eye is opened, so that the recycling of the waste electrode is realized, and the cost and consumption of purchasing the furnace eye plugging device are reduced.

Description

Technical Field

[0001] This utility model relates to the field of industrial silicon production technology, and in particular to a graphite furnace eye plug for industrial silicon smelting. Background Technology

[0002] In industrial silicon production, the temperature of molten silicon exiting the furnace (submerged arc furnace) typically exceeds 1550℃. After the molten silicon is connected to the silicon ladle, the furnace opening must be sealed promptly to prevent the molten silicon from flowing out.

[0003] Currently, when sealing furnace holes, most domestic manufacturers use cast iron plugs to push the plugging mud ball for sealing, while some manufacturers use wooden plugs to push the plugging mud ball for sealing.

[0004] However, iron plugs are easily melted by high temperatures, resulting in high consumption, and they can easily introduce iron impurities into the silica molten metal; wooden plugs are not heat-resistant, and the wooden sticks are prone to cracking when the moisture content is high, also resulting in high consumption. In other words, existing iron and wooden plugs have the problems of high consumption and the easy introduction of iron impurities into the silica molten metal. Utility Model Content

[0005] In view of the above situation, this utility model provides a graphite furnace eye plug for industrial silicon smelting, which aims to solve the technical problems of existing iron plugs and wooden plugs having high consumption and easily introducing impurities such as iron into the silicon melt.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a graphite furnace hole plug for industrial silicon smelting, comprising:

[0008] The ball-pushing body is used to push the plugging mud ball to seal the furnace hole; the ball-pushing body has an interconnected receiving groove and a clearance hole, which run through the ball-pushing body along the length direction; the diameter of the receiving groove is larger than the diameter of the clearance hole, and a shoulder is formed at the connection between the receiving groove and the clearance hole.

[0009] The connector is detachably connected to the receiving groove, and one end of the connector can protrude from the ball-pushing body through the clearance hole; the shoulder is used to limit the length of one end of the connector protruding from the ball-pushing body.

[0010] The main body of the ball pusher and the used electrodes after the furnace opening are identical in shape and material; both the main body of the ball pusher and the used electrodes are cylindrical and made of graphite.

[0011] In some embodiments of this utility model, the length of the ball-pushing body is 120mm.

[0012] In some embodiments of this utility model, the diameter of the receiving groove is 41mm and the depth is 60mm, and the diameter of the clearance hole is 25mm and the depth is 60mm.

[0013] In some embodiments of this utility model, the connecting member is a single-headed bolt.

[0014] In some embodiments of this utility model, the dimensions of the single-headed bolt are M24 × 140mm, or M24 × 150mm, or M24 × 160mm.

[0015] In some embodiments of this utility model, a flat washer is fitted onto the shank of the single-headed bolt.

[0016] In some embodiments of this utility model, a spring washer is fitted onto the shank of the single-headed bolt.

[0017] In some embodiments of this invention, a push rod is also included for connecting to the portion of the connector that protrudes from the ball-pushing body.

[0018] In some embodiments of this utility model, a plugging member for sealing the opening of the receiving groove is also included.

[0019] In some embodiments of this utility model, the plugging component is a mixture of refractory clay and graphite powder.

[0020] The embodiments of this utility model have at least the following advantages or beneficial effects:

[0021] First, the ball-pushing body is made of graphite material, which will not introduce impurities such as iron into the silica water.

[0022] Second, the waste electrodes after the furnace hole is opened are also made of graphite. The shape and material of the ball pusher body are the same as those of the waste electrodes. The waste electrodes after the furnace hole is opened can be used to make the ball pusher body, realizing the recycling of waste electrodes and reducing the cost and consumption of the purchased furnace hole sealing device.

[0023] Other features and advantages of this invention will be set forth in the following description. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the main structure of the ball-pushing mechanism;

[0026] Figure 2 for Figure 1 The left view;

[0027] Figure 3 for Figure 1 Top view;

[0028] Figure 4 This is a structural diagram of a single-headed bolt, a flat washer, and a spring washer.

[0029] Icons: 1-Push ball body, 2-Single-headed bolt, 3-Receiving groove, 4-Allowing hole, 5-Flat washer, 6-Spring washer. Detailed Implementation

[0030] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention.

[0031] In the description of the embodiments of this utility model, it should be understood that the terms "length", "thickness", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0032] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0033] The embodiments of this utility model will be described in detail below.

[0034] Example 1

[0035] See Figures 1-4 This embodiment provides a graphite furnace eye plugger for industrial silicon smelting, including a ball pusher body, a connector, a plugging slot component (not shown in the figure), and a push rod (not shown in the figure).

[0036] The pusher body is cylindrical and is used to push the plugging mud ball to seal the furnace hole. The pusher body is made of graphite. Inside the pusher body are coaxial and interconnected receiving grooves and clearance holes, both cylindrical in shape, extending through the pusher body along its length. One end of the receiving groove begins at one end face of the pusher body, and the other end connects to one end of the clearance hole, which extends to the other end face of the pusher body. The diameter of the receiving groove is larger than the diameter of the clearance hole, and a shoulder is formed at the connection between the receiving groove and the clearance hole.

[0037] The connector is detachably connected to the receiving groove, and one end of the connector can protrude from the ball-pushing body through the clearance hole. The shoulder is used to limit the length of one end of the connector protruding from the ball-pushing body.

[0038] The plug is used to seal the opening of the receiving groove.

[0039] The push rod is used to connect to the part of the connector that protrudes from inside the ball-pushing body.

[0040] After the molten silicon is discharged from the furnace, the pusher rod pushes the ball-pushing body, which in turn pushes the plugging mud ball to seal the furnace hole and prevent the residual molten silicon from flowing out.

[0041] In summary, this embodiment has at least the following beneficial effects:

[0042] First, the ball-pushing body is made of graphite material, which will not introduce impurities such as iron into the silica water.

[0043] Second, the waste electrodes after the furnace hole is opened are also made of graphite. The shape and material of the ball pusher body are the same as those of the waste electrodes. The waste electrodes after the furnace hole is opened can be used to make the ball pusher body, realizing the recycling of waste electrodes and reducing the cost and consumption of the purchased furnace hole sealing device.

[0044] Third, by setting up the plugging part, the opening of the receiving groove is sealed, preventing the silicone water from burning the connector.

[0045] Fourth, the push rod design facilitates the use of the ball-pushing mechanism.

[0046] Example 2

[0047] See Figures 1-4 The diameter of the receiving groove is 41mm and the depth is 60mm, and the diameter of the clearance hole is 25mm and the depth is 60mm.

[0048] The connector is a single-ended bolt with dimensions of M24 × 140mm, M24 × 150mm, or M24 × 160mm. The head of the single-ended bolt can be blocked by a shoulder to limit the length of the connector protruding from the pusher body through the clearance hole. The shank of the single-ended bolt can protrude from the pusher body and connect with a matching nut (not shown in the figure), thereby fastening the single-ended bolt to the pusher body.

[0049] The shank of the single-ended bolt is fitted with a flat washer and / or a spring washer (elastic gasket). The dimensions of the flat washer are: inner diameter 25mm, outer diameter 80mm, thickness 3~5mm. The dimensions of the spring washer are: inner diameter 25mm, outer diameter 30~80mm, thickness 3~5mm.

[0050] To facilitate the connection between the push rod and the connector, the push rod and the connector are welded together. Preferably, both are made of the same material.

[0051] The plugging material is a mixture of refractory clay and graphite powder. The ratio of refractory clay to graphite powder is prepared as needed.

[0052] The specific process of using waste electrodes after furnace opening to manufacture the ball pusher body and the graphite furnace opening plug for industrial silicon smelting is as follows:

[0053] The first step is to process and cut the waste electrode to a length of 120mm. A hole with a diameter of 41mm and a depth of 60mm is drilled at one end of the waste electrode to obtain a receiving groove; a hole with a diameter of 25mm and a depth of 60mm is drilled at the other end to obtain a clearance hole, thereby producing the main body of the push ball.

[0054] The second step is to prepare a single-ended bolt (i.e., a connector); insert one end of the single-ended bolt into the ball-pushing body from the receiving groove and through the clearance hole, put a flat washer and a spring washer on the shank of the single-ended bolt, install the nut and tighten it.

[0055] The third step is to seal the opening of the receiving tank with a mixture of refractory clay and graphite powder to prevent the silica water from burning the single-headed bolt when plugging the hole.

[0056] The fourth step is to dry the mixed mud, and then weld the shank of the single-headed bolt to the push rod, which can then be used to plug the furnace hole.

[0057] Example 3

[0058] See Figures 1-4 In this embodiment, the receiving groove and the clearance hole are not coaxial; for example, their axes are parallel but not coincident, or their axes intersect. The shapes of the receiving groove and the clearance hole can be polygonal or similar.

[0059] Finally, it should be noted that the above are merely preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A graphite furnace eye plug for industrial silicon smelting, characterized in that, include: The ball-pushing body is used to push the plugging mud ball to seal the furnace hole; the ball-pushing body has an interconnected receiving groove and a clearance hole, the receiving groove and the clearance hole are connected through the ball-pushing body along the length direction; the diameter of the receiving groove is larger than the diameter of the clearance hole, and a shoulder is formed at the connection between the receiving groove and the clearance hole; A connector is detachably connected to the receiving groove, and one end of the connector can protrude from the ball-pushing body through the clearance hole; the shoulder is used to limit the length of one end of the connector protruding from the ball-pushing body; The ball-pushing body and the used electrode after the furnace opening are identical in shape and material; both the ball-pushing body and the used electrode are cylindrical and made of graphite.

2. The graphite furnace eye plug for industrial silicon smelting according to claim 1, characterized in that, The length of the ball-pushing body is 120mm.

3. The graphite furnace eye plug for industrial silicon smelting according to claim 1, characterized in that, The receiving groove has a diameter of 41 mm and a depth of 60 mm, and the clearance hole has a diameter of 25 mm and a depth of 60 mm.

4. The graphite furnace eye plug for industrial silicon smelting according to claim 1, characterized in that, The connector is a single-headed bolt.

5. The graphite furnace eye plug for industrial silicon smelting according to claim 4, characterized in that, The dimensions of the single-headed bolt are M24 × 140mm, or M24 × 150mm, or M24 × 160mm.

6. The graphite furnace eye plug for industrial silicon smelting according to claim 4, characterized in that, The shank of the single-headed bolt is fitted with a flat washer.

7. The graphite furnace eye plug for industrial silicon smelting according to claim 4, characterized in that, The shank of the single-headed bolt is fitted with a spring washer.

8. The graphite furnace eye plug for industrial silicon smelting according to claim 1, characterized in that, It also includes a push rod for connecting to the portion of the connector that protrudes from the ball-pushing body.

9. The graphite furnace eye plug for industrial silicon smelting according to any one of claims 1 to 8, characterized in that, It also includes a plugging component for sealing the opening of the receiving groove.

10. The graphite furnace eye plug for industrial silicon smelting according to claim 9, characterized in that, The plugging component is a mixture of refractory clay and graphite powder.

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