Soft felt tapping device for high-temperature furnace

Abstract

The utility model discloses a soft felt tapping device for a high-temperature furnace, and relates to the technical field of high-temperature furnaces. The trepanning device comprises a trepanning square plate and two trepanning tools; the tapping tool comprises a fixed flange, a felt penetrating rod and a tapper; the fixed flange is connected with a furnace body flange of the high-temperature furnace; the bottom of the felt penetrating rod penetrates through the fixed flange and is in threaded connection with the fixed flange; the top of the felt penetrating rod is of a conical tip structure, the tapping head of the tapper faces downwards, and the tapper is in threaded connection with the outer wall of the felt penetrating rod. Holes corresponding to the graphite electrode holes and the graphite supporting column holes in the same column are formed in the perforated square plate, the felt penetrating rods of the two sets of perforated tools penetrate through the two graphite electrode holes in the same column respectively, and the felt penetrating rods of the two sets of perforated tools penetrate through and are connected into the holes in one side of the perforated square plate respectively; according to the device, the positions of the graphite electrode and the graphite supporting hole can be accurately positioned, the trepanning error is greatly reduced, the trepanning precision is improved, and the problem that trepanning is prone to deviation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature furnaces, in particular to a soft felt hole-opening device for high-temperature furnaces. Background Art

[0002] High-temperature furnaces are generally composed of furnace bodies, heaters, insulation systems, and vacuum systems. The performance of the insulation system directly affects the power loss of the equipment and the overall safety of the equipment. At present, the insulation system is mainly composed of an insulation cage and an insulation layer. The insulation layer is usually made of multiple layers of PAN-based and viscose-based graphite soft felt, and is installed on the insulation cage through carbon-carbon bolts and carbon ropes, which can effectively reduce heat loss. The soft felt is a whole roll of felt when it leaves the factory. The whole roll of felt must be sewn to the insulation cage first, and then the soft felt must be opened according to the bottom size. These holes include graphite electrode holes, graphite support column holes, etc. The hole position and size need to be strictly controlled. If the hole position deviates, other components cannot be installed, and the hole size deviation is prone to heat leakage. Because the soft felt is thick, it is easy to offset when opening the hole directly with a hole opener, which makes it difficult to meet the accuracy requirements. Therefore, it takes a lot of time to position and correct each time a hole is opened, resulting in a waste of manpower and time costs. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides a soft felt hole-making device for a high-temperature furnace, thereby solving the problems of low hole-making precision and low hole-making efficiency of the soft felt for a high-temperature furnace.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions.

[0005] A soft felt hole-opening device for a high-temperature furnace, wherein a row of graphite electrode holes needs to be opened on both sides of the soft felt, and multiple rows of graphite support column holes need to be opened between the two rows of graphite electrode holes; the hole-opening device comprises a hole-opening square plate and two sets of hole-opening tooling; the hole-opening tooling comprises a fixed flange, a felt-piercing rod and a hole-opener; the fixed flange is connected to the furnace body flange of the high-temperature furnace, and the bottom of the felt-piercing rod passes through the fixed flange and is threadedly connected to the fixed flange; the top of the felt-piercing rod is a conical pointed structure, the hole-opening head of the hole-opener faces downward, and the hole-opener is threadedly connected to the outer wall of the felt-piercing rod; holes corresponding to the same row of graphite electrode holes and graphite support column holes are opened on the hole-opening square plate, the felt-piercing rods of the two sets of hole-opening tooling respectively pass through the two graphite electrode holes located in the same row, and the felt-piercing rods of the two sets of hole-opening tooling respectively pass through the holes on one side of the hole-opening square plate.

[0006] Furthermore, a lower handle is connected to the bottom of the felt threading rod.

[0007] Furthermore, the hole opener is connected with an upper handle.

[0008] Furthermore, the hole opener is welded to the upper handle, and the upper handle is screwed to the felt-piercing rod.

[0009] Furthermore, the fixed flange and the furnace body flange are screwed together using bolts.

[0010] The beneficial effects of the utility model compared with the prior art are:

[0011] During the installation of the thermal insulation soft felt, the utility model screws the fixed flange to the furnace body flange, inserts the felt rod from the bottom into the bottom soft felt, rotates the lower handle to pierce the felt rod through the soft felt to locate the center of the circle, and after the positioning is completed, installs the upper handle to the top of the felt rod, and rotates the upper handle to open the graphite electrode holes from top to bottom in the soft felt. After the two rows of graphite electrode holes are opened, two sets of hole opening tools are used to fix the fixed flange to the furnace body flange at the same time, and the hole opening square plate is inserted into the felt rods of the two sets of hole opening tools. The graphite support holes on the hole opening square plate can be positioned, and finally the hole opener is used to open the graphite support column holes. The tool can accurately locate the positions of the graphite electrode and the graphite support hole, greatly reducing the hole opening error, improving the hole opening accuracy, solving the problem of easy hole opening deviation, shortening the installation time, and saving the installation cost. In addition, the utility model has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the hole-opening tooling;

[0013] Figure 2 A schematic diagram of the structure of positioning the graphite support holes by using two sets of hole punching tools and hole punching square plates at the same time;

[0014] Figure 3 for Figure 2 A top view of

[0015] Figure 4 This is a schematic diagram of the hole-opening tooling when used in a furnace;

[0016] Figure 5 This is a schematic diagram of the locations where holes need to be opened in the soft felt.

[0017] In the figure: 1-lower handle, 2-fixing flange, 3-felt rod, 4-hole opener, 5-upper handle, 6-furnace flange, 7-soft felt, 8-hole square plate, 9-graphite electrode hole, 10-graphite support column hole. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail in combination with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. The technical solution of the present invention is described in detail below in combination with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0019] See also Figures 1 to 5 The utility model proposes a soft felt hole-opening device for a high-temperature furnace. A row of graphite electrode holes 9 need to be opened on both sides of the soft felt 7, and three rows of graphite support column holes 10 need to be opened between the two rows of graphite electrode holes 9; the hole-opening device includes a hole-opening square plate 8 and two hole-opening tooling.

[0020] The hole punching tool comprises a lower handle 1, a fixed flange 2, a felt rod 3, a hole punch 4 and an upper handle 5; the fixed flange 2 is connected to the furnace body flange 6 of the high temperature furnace, and is used to fix the hole punching tool as a whole to the high temperature furnace. In this embodiment, the fixed flange 2 and the furnace body flange 6 are screwed together using bolts.

[0021] The bottom of the felt-piercing rod 3 passes through the fixed flange 2 and is threadedly connected to the fixed flange 2; the felt-piercing rod 3 can move up and down relative to the fixed flange 2; the bottom of the felt-piercing rod 3 is connected to a lower handle 1, and the felt-piercing rod 3 can be twisted more conveniently by holding the lower handle 1; the top of the felt-piercing rod 3 is a conical tip structure, and by rotating the lower handle 1, the felt-piercing rod 3 can be driven to move upward, so that the soft felt 7 can be penetrated from the bottom through the conical tip structure. The hole opener 4 is a conventional existing device, and the hole opener 4 is a ring of cutting blades for opening holes; the hole opener 4 has a cutting blade head facing downward, and the hole opener 4 is welded to the bottom of the upper handle 5, and the middle of the upper handle 5 is a threaded hole, and the upper handle 5 is threadedly connected to the outer wall of the felt-piercing rod 3. The hole-opening square plate 8 is provided with holes corresponding to the graphite electrode holes 9 and the graphite support column holes 10 in the same row.

[0022] By screwing the fixed flange 2 and the furnace flange 6, the felt rod 3 is inserted from the bottom to the corresponding graphite electrode hole 9 on the soft felt 7 at the bottom, and the felt rod 3 is pierced through the soft felt 7 by rotating the lower handle 1 to locate the center of the graphite electrode hole 9. After the positioning is completed, the upper handle 5 is installed on the top of the felt rod 3, and the upper handle 5 is rotated to make the hole opener 4 open the graphite electrode hole 9 on the soft felt 7 from top to bottom. After the two rows of graphite electrode holes 9 are opened, two hole opening tools are used to fix the fixed flange 2 and the furnace flange 6 at the same time, and the hole opening square plate 8 is inserted into the felt rods 3 of the two sets of hole opening tools. At this time, the felt rods 3 of the two hole opening tools are respectively inserted into the two graphite electrode holes 9 located in the same row, and the felt rods 3 of the two sets of hole opening tools are respectively inserted into the holes connected to one side of the hole opening square plate 8. The holes corresponding to the graphite support holes 9 on the hole opening square plate 8 can be positioned, and finally another hole opener 4 is used to open the graphite support column holes 10.

[0023] The specific working principle of this device is:

[0024] After the graphite soft felt is installed in the insulation system, it is necessary to drill holes in the graphite soft felt. The felt rod 3 is inserted from the bottom to the soft felt 7 at the bottom. The felt rod 3 is pierced through the soft felt 7 by rotating the lower handle 1 to locate the center of the circle. After the positioning is completed, the upper handle 5 is installed on the top of the felt rod 3. The upper handle 5 is rotated to drive the hole opener 4 to drill the graphite electrode holes 9 from the upper part of the soft felt 7 to the lower part. After the two rows of graphite electrode holes 9 are drilled, two sets of hole opening tools are used to fix the fixed flange 2 and the furnace flange 6 at the same time, and the hole opening square plate 8 is inserted into the felt rod 3 of the two sets of hole opening tools. The graphite support holes on the hole opening square plate 8 can be positioned, and finally other hole openers are used to drill the graphite support column holes 10.

[0025] The utility model has a simple structure and is easy to install. It can accurately locate the positions of the graphite electrode and the graphite support hole, greatly reduces the hole opening error, improves the hole opening accuracy, solves the problem of easy hole opening deviation, shortens the installation time, and saves the installation cost.

[0026] The above content is a further detailed description of the utility model in combination with a specific preferred implementation method. It cannot be determined that the specific implementation methods of the utility model are limited to this. For ordinary technicians in the technical field to which the utility model belongs, they can make several simple deductions or substitutions without departing from the utility model, which should be regarded as belonging to the utility model and the scope of patent protection determined by the submitted claims.

Claims

1. A soft felt hole-making device for a high-temperature furnace, wherein a row of graphite electrode holes (9) are respectively formed on both sides of the soft felt (7), and a plurality of rows of graphite support column holes (10) are formed between the two rows of graphite electrode holes (9); characterized in that: The hole-opening device comprises a hole-opening square plate (8) and two sets of hole-opening tools; the hole-opening tools comprise a fixed flange (2), a felt-piercing rod (3) and a hole-opener (4); the fixed flange (2) is connected to the furnace body flange (6) of the high-temperature furnace, the bottom of the felt-piercing rod (3) passes through the fixed flange (2) and is threadedly connected to the fixed flange (2); the top of the felt-piercing rod (3) is a conical tip structure, the hole-opening head of the hole-opener (4) faces downward, and the hole-opener (4) is threadedly connected to the outer wall of the felt-piercing rod (3); holes corresponding to the graphite electrode holes (9) and the graphite support column holes (10) in the same row are opened on the hole-opening square plate (8), the felt-piercing rods (3) of the two sets of hole-opening tools are respectively passed through the two graphite electrode holes (9) located in the same row, and the felt-piercing rods (3) of the two sets of hole-opening tools are respectively passed through the holes on one side of the hole-opening square plate (8).

2. A soft felt hole-opening device for a high-temperature furnace according to claim 1, characterized in that: The bottom of the felt threading rod (3) is connected to a lower handle (1).

3. The soft felt hole-opening device for high-temperature furnace according to claim 1, characterized in that: The hole opener (4) is connected to an upper handle (5).

4. The soft felt hole-opening device for high-temperature furnace according to claim 3, characterized in that: The hole opener (4) is welded to the upper handle (5), and the upper handle (5) is screwed to the felt-piercing rod (3).

5. The soft felt hole-opening device for high-temperature furnace according to claim 1, characterized in that: The fixed flange (2) and the furnace body flange (6) are screwed together using bolts.

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