Anti-breakdown insulating blanking pipe nipple

Abstract

The utility model discloses an anti-breakdown insulating blanking pipe nipple, which relates to the technical field of electric furnaces and comprises a circular ring body, grooves are arranged on the outer sides of the end faces of the upper end and the lower end of the circular ring body at equal intervals, openings are arranged on the end faces of the circular ring body at the upper ends or the lower ends of the grooves, and openings are also arranged on the side faces of the circular ring body of the grooves. Circular through holes penetrating through the circular ring body are formed in the bottom surfaces of the grooves, and the position of each groove in the lower end face of the circular ring body is aligned with the position of the outer edge of the end face between the two grooves in the upper end face of the circular ring body in the vertical direction; high-temperature attaching cotton and flanges are arranged at the upper and lower ends of the circular ring body; according to the utility model, the service lives of the blanking middle column pipe of the calcium carbide furnace and the submerged arc furnace and the whole furnace are prolonged through the insulating blanking pipe nipple made of the chrome corundum material, and the maintenance cost of the insulating blanking middle column pipe is reduced and saved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric furnaces, in particular to an anti-breakdown insulating feed pipe short section. Background Art

[0002] Calcium carbide furnaces and ore-fired furnaces were gradually developed after the advent of DC generators in the 1870s and are some commonly used electric melting furnaces.

[0003] Although the existing insulating feeding column tube is used in calcium carbide furnaces and ore-fired furnaces, the insulating feeding column tube of the original design has an insulating feeding column short section located between the lower end face of the feeding tube above the insulating feeding column tube itself and the upper end face of the feeding tube below the insulating feeding column tube. The material of the short section is 3240 resin. During the normal production and operation of the circuit, if the current is slightly too large, it is easy to break through the entire insulating feeding column short section, causing the entire floor connected to the feeding column tube to be electrified, resulting in a serious equipment accident, posing a serious safety hazard to the staff.

[0004] At the same time, the insulating feeding center column pipe is mainly used to transport mineralized materials for electric melting to the calcium carbide furnace and the ore-fired furnace. The insulating feeding pipe short section serves as a connector between the lower end face of the feeding pipe above the feeding center column pipe itself and the upper end face of the feeding pipe below the insulating feeding center column pipe. During long-term use, the sealing of the joints between the two ends of the connector and one end of the feeding pipe is also very important. Utility Model Content

[0005] The utility model aims to provide an insulating feed pipe short section which is anti-breakdown, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A breakdown-proof insulating feed pipe short section comprises a torus, wherein grooves are arranged at equal intervals on the outer side of the upper end face of the torus, an opening is arranged on the upper end face of the torus, and an opening is also arranged on the side face of the torus, and grooves are arranged at equal intervals on the outer side of the lower end face of the torus, an opening is arranged on the lower end face of the torus, and an opening is also arranged on the side face of the torus; a circular through hole is arranged in the middle of the bottom face of the groove, which penetrates the torus in the up-down direction, and each groove position on the lower end face of the torus is aligned with the outer edge position of the end face between two grooves on the upper end face of the torus in the up-down direction; both upper and lower ends of the torus are covered with flanges, and the shape of the flanges is the same as the shape of the upper and lower end faces of the torus; circular holes are arranged in an array with the center of the flange as the center of the circle along the outer side of the upper and lower end faces of the flange, and the circular holes on the flange are aligned with the circular through holes at the upper or lower end of the torus itself in the up-down direction.

[0008] The upper and lower ends of the annular body and the flange are covered with high-temperature conformable cotton.

[0009] The grooves at the upper and lower ends of the annular body have the same shape and size, and are all square grooves; the position of any groove on the end face of the lower end of the annular body is aligned with the center position of the outer edge of the end face between every two grooves on the outer edge of the upper end of the annular body along the up and down direction.

[0010] The depth of the square grooves at the upper and lower ends of the annular body is between one third and one half of the height of the annular body itself in the up and down direction; the annular body is integrally cast from an amorphous refractory material, and its material is chromium corundum.

[0011] The material of the annular flange is 304 stainless steel.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The insulating feed pipe short section made of high-quality zirconia and dense corundum as the main raw materials has improved its service life in the high-temperature and harsh environment of calcium carbide furnace and ore-fired furnace, reduced the frequency of maintenance and replacement of the insulating feed column tube, and saved the maintenance and replacement cost; 2. The high-temperature conformable cotton is used to improve the flexible buffering performance of the lower end of the feed pipe above the insulating feed column tube itself and the upper end of the feed pipe below the center column tube connected to the upper and lower ends of the insulating feed pipe short section itself; 3. The high-temperature conformable cotton is used to improve the sealing performance of the connection between the end face of the feed pipe of the insulating feed column tube itself and the end face of the insulating feed pipe short section, effectively preventing the leakage of raw materials in the ore-fired furnace; 4. Square grooves are provided on the upper and lower end faces of the annular body of the insulating feed pipe short section itself, and a circular through hole is provided in the center of the bottom surface of the square groove that penetrates the annular body in the up and down directions. Such an arrangement is conducive to fixing the upper and lower ends of the insulating feed pipe short section to the feed pipe end face through a bolt structure under the condition of ensuring insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of an anti-breakdown insulating feed pipe short section of the utility model;

[0015] In the figure: 1 high temperature conformable cotton; 2 annular body; 201 groove; 202 circular through hole; 3 flange. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Please refer to the legend. In the embodiment of the utility model, an anti-breakdown insulating feed pipe short section includes a torus 2, the outer side of the upper end face of the torus 2 is provided with grooves 201 at equal intervals, the upper end of the groove 201 is provided with an opening on the upper end face of the torus 2, and the groove 201 is also provided with an opening on the side of the torus 2, the outer side of the lower end face of the torus 2 is provided with grooves 201 at equal intervals, the lower end of the groove 201 is provided with an opening on the lower end face of the torus 2, and the groove 201 is also provided with an opening on the side of the torus 2; the middle of the bottom surface of the groove 201 is provided There is a circular through hole 202 that penetrates the annular body 2 in the up-down direction, and the position of each groove 201 on the lower end face of the annular body 2 is aligned with the outer edge of the end face between the two grooves 201 on the upper end face of the annular body 2 in the up-down direction; the upper and lower ends of the annular body 2 are covered with flanges, and the shape of the flanges is the same as the shape of the upper and lower end faces of the annular body 2; along the outer sides of the upper and lower end faces of the flanges, an array of penetrating circular holes is arranged with the center of the flange as the center of the circle, and the circular holes on the flanges are aligned with the circular through holes 202 at the upper or lower end of the annular body 2 itself in the up-down direction.

[0018] The upper and lower ends of the annular body 2 and the flange are covered with high-temperature conformable cotton 1.

[0019] The grooves 201 arranged at the upper and lower ends of the annular body 2 have the same shape and size, and are all square grooves 201; the position of any groove 201 on the lower end surface of the annular body 2 is aligned with the center position of the outer edge of the end surface between every two grooves 201 on the outer edge of the upper end surface of the annular body 2 along the up and down direction.

[0020] The depth of the square grooves 201 provided at the upper and lower ends of the annular body 2 is between one third and one half of the height of the annular body 2 itself in the up and down direction; the annular body 2 is integrally cast from an amorphous refractory material, and its material is zirconium chromium corundum.

[0021] The material of the annular flange is 304 stainless steel.

[0022] The working principle of the utility model is as follows: the insulating feeding center column tube is mainly used on the furnace bodies of electric melting furnaces such as calcium carbide furnaces and ore-fired furnaces. Its main function is to transport mineralized materials to the furnace bodies of electric melting furnaces such as calcium carbide furnaces and ore-fired furnaces, and to make the mineralized materials in the furnace body of the electric melting furnace use the strong current in the furnace body to perform electric melting operations; the insulating feeding center column tube itself includes a feeding tube and an insulating feeding tube short section; wherein the insulating feeding tube short section is located between the lower end face of the feeding tube above the insulating feeding center column tube itself and the upper end face of the feeding tube below the center column tube, and in fact, a flange is provided extending outwardly along the side surfaces of the upper and lower ends of the feeding tube itself, and the flange is a circular ring plate, and the hole in the ring plate of the flange itself is sleeved on the upper and lower sides of the feeding tube and welded and fixed, along the flange There are through circular holes at equal intervals on the outer edges of the upper and lower ends. The through circular holes of the flange itself are aligned with the circular through hole 202 in the middle of the bottom surface of the square groove 201 of the annular body 2 and the through circular holes at the upper and lower ends of the flange 3 in the up and down direction. Therefore, one end of the screw rod of the bolt itself passes through the circular through hole 202 in the middle of the bottom surface of the square groove 201 at the upper and lower ends of the annular body 2, the through circular holes at the upper and lower ends of the flange 3, the high-temperature compliant cotton of the short section of the insulating feed pipe itself, and the through circular holes at equal intervals on the outer edges of the upper and lower ends of the flange, and then fixed with nuts; the bottom of the nut connected to the other end of the screw rod of the bolt itself is tightly buckled on the outer end of the circular through hole 202 in the middle of the bottom surface of the square groove 201 at the upper and lower ends of the annular body 2.

[0023] The insulating feeding center column tube itself includes the feeding tube and the insulating feeding tube short section. The feeding tube is mostly made of conductive metal material, while the insulating feeding short section is mainly cast from amorphous refractory castables that are not conductive and are resistant to high temperature and corrosion. The insulating feeding tube short section is located between the connecting end faces of the two feeding tubes, and its purpose is to block conduction. During the normal production and operation of the electric melting furnace body circuit, it is prevented from breaking through the entire insulating feeding tube short section due to excessive current, causing the entire floor connected to the feeding center column tube to be electrified, resulting in a serious equipment accident, which causes serious safety hazards to production.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-breakdown insulating feed pipe short section, characterized by: It includes a circular body, grooves are arranged at equal intervals on the outer side of the upper end face of the circular body, an opening is arranged on the upper end of the grooves, and an opening is also arranged on the side of the circular body; grooves are arranged at equal intervals on the outer side of the lower end face of the circular body, an opening is arranged on the lower end face of the circular body, and an opening is also arranged on the side of the circular body; a circular through hole is arranged in the middle of the bottom surface of the groove, which penetrates the circular body in the up-down direction, and each groove position on the lower end face of the circular body is aligned with the outer edge position of the end face between the two grooves on the upper end face of the circular body in the up-down direction; the upper and lower ends of the circular body are covered with flanges, and the shape of the flanges is the same as the shape of the upper and lower end faces of the circular body; circular holes are arranged in an array along the outer side of the upper and lower end faces of the flange with the center of the flange as the center of the circle, and the circular holes on the flange are aligned with the circular through holes at the upper or lower end of the circular body itself in the up-down direction.

2. According to claim 1, the anti-breakdown insulating feed pipe short section is characterized in that: High temperature conformable cotton is covered between the upper and lower ends of the annular body and the flange.

3. According to the anti-breakdown insulating feed pipe short section of claim 1, it is characterized by: The grooves at the upper and lower ends of the annular body have the same shape and size, and are all square grooves; any groove position on the end face of the lower end of the annular body is aligned with the center position of the outer edge of the end face between every two grooves on the outer edge of the upper end of the annular body along the vertical direction.

4. According to claim 2, the anti-breakdown insulating feed pipe short section is characterized by: The depth of the square grooves at the upper and lower ends of the annular body is between one third and one half of the height of the annular body itself in the up and down direction; the annular body is integrally cast and formed by an amorphous refractory material.

5. The anti-breakdown insulating feed pipe nipple according to claim 1, characterized in that: The material of the annular flange is 304 stainless steel.

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