CN202358922U - Square silicon core holding device of two-valve graphite clamping valve structure - Google Patents

The utility model relates to a square silicon core holding device of a two-valve graphite clamping valve structure, belonging to the technical field of square silicon core holding devices in polysilicon production. The square silicon core holding device is composed of a graphite base, clamping valves and an axis pin, wherein the graphite base is a cylinder; the upper part of the graphite base is provided with an inverted conical hole, and the lower part is provided with a conical hole; the two clamping valves connected through the axis pin are arranged in the inverted conical hole on the upper part; the center of each clamping valve is provided with a V slot; and an electrode is arranged in the conical hole on the lower part. The clamping slot formed by the two V slots after combining the two clamping valves is utilized to hold the square silicon core, so that the lower part of the square silicon core does not need to be ground into a cone in the holding process; and thus, the utility model is simple to use, and reduces the generation of the carbon leftovers. The utility model solves the following problems in the existing silicon core holding device: the lower part of the square silicon core must be rounded, the silicon core holding device is inconvenient to use, and the tip part of the clamping valve can grow into the polysilicon to form the carbon head material, thereby lowering the polysilicon yield. The utility model has the advantages of simple structure and low manufacturing cost, and can correspondingly increase the polysilicon yield.

The square silicon core clamping device of two lobe formula graphite card valve structures

Technical field

The utility model relates to a kind of square silicon core clamping device of two lobe formula graphite card valve structures, belongs to square silicon core clamping device technical field in the production of polysilicon.

Background technology

In the reduction operation of production of polysilicon, the silicon core is formed " Jiong " font structure, and the silicon core is connected with one group of graphite piece with electrode, forms conducting between two electrodes.The existing square silicon core clamping device that uses is the three-piece formula structure that adopts graphite base, graphite card lobe and graphite cap to form; This three-piece unit construction is because the middle flute profile of graphite card lobe is conical; In the side of being applied to during the clamping of silicon core; Need the bottom of the other side's silicon core to carry out the rounding processing treatment, could use after wearing into a cone to the bottom of square silicon core.But square silicon core is through after such processing treatment, and graphite card lobe is a sharp mouth shape with contacting of polycrystalline silicon growth part, and the point mouth portion can be grown in the polysilicon and the formation carbon head material when polycrystalline silicon growth.Therefore, the existing square silicon core clamping device that uses not only will increase the manufacturing procedure of silicon core bottom, and the generation of carbon head material, has reduced the output of polysilicon.

Summary of the invention

The purpose of the utility model is, provides a kind of and is made up of graphite base and two card lobes, and card lobe center is manufactured with V-shaped groove, and clamping time side silicon core does not need reprocessing, and is simple in structure; The clamping device that solves prior art not only uses trouble, and the sharp mouth portion of graphite card lobe can grow into and form carbon head material in the polysilicon, reduces the square silicon core clamping device of two lobe formula graphite card valve structures of polysilicon production problems.

The utility model is to realize above-mentioned purpose through following technical scheme:

The square silicon core clamping device of this two lobes formula graphite card valve structure is made up of graphite base, card lobe and bearing pin, and it is characterized in that: graphite base is a right cylinder, and the top of graphite base is manufactured with a back taper hole, and the bottom is manufactured with a taper hole; Two card lobes are housed in the back taper hole on graphite base top, and connect through bearing pin, the center of every card lobe is manufactured with a V-shaped groove; In the taper hole of graphite base bottom electrode is housed.

The utility model beneficial effect compared with prior art is:

Be manufactured with V-shaped groove on the card lobe of the square silicon core clamping device of this two lobes formula graphite card valve structure; Two card lobes merge latter two V-shaped groove and form and the consistent draw-in groove of square silicon core; Do not need during clamping again cone to be worn in the bottom of square silicon core; Directly user's silicon core, and card lobe and polysilicon contact site are a plane, have reduced the generation of carbon head material.Solved existing silicon core clamping device and will the bottom of square silicon core have been processed rounding, not only used trouble, and the sharp mouth portion of graphite card lobe can grow into and form carbon head material in the polysilicon, reduce the problem of polysilicon output.The square silicon core clamping device of this two lobes formula graphite card valve structure is simple in structure, and cost is low; Easy to use, can correspondingly increase polysilicon output.

Description of drawings:

Fig. 1 is the main TV structure synoptic diagram of the square silicon core clamping device of two lobe formula graphite card valve structures;

Fig. 2 is the plan structure synoptic diagram of the square silicon core clamping device of two lobe formula graphite card valve structures;

Fig. 3 is the side-looking structural representation of the square silicon core clamping device of two lobe formula graphite card valve structures;

Fig. 4 is the structural representation of graphite base of the square silicon core clamping device of two lobe formula graphite card valve structures;

Fig. 5 is the vertical view of card lobe of the square silicon core clamping device of two lobe formula graphite card valve structures.

Among the figure: 1, graphite base, 2, the card lobe, 3, square silicon core, 4, electrode, 5, bearing pin, 6, the back taper hole, 7, taper hole, 8, V-shaped groove.

Embodiment:

1. the square silicon core clamping device of a lobe formula graphite card valve structure; It is made up of graphite base (1), card lobe (2) and bearing pin (5); It is characterized in that: graphite base (1) is a right cylinder; The top of graphite base (1) is manufactured with a back taper hole (6), and the bottom is manufactured with a taper hole (7); Two card lobes (2) are housed in the back taper hole (6) on graphite base (1) top, and connect through bearing pin (5), the center of every card lobe (2) is manufactured with a V-shaped groove (8); In the taper hole (7) of graphite base (1) bottom electrode (4) is housed.