CN212955287U

CN212955287U - Magnesium spraying gun device

Info

Publication number: CN212955287U
Application number: CN202020959137.0U
Authority: CN
Inventors: 崔建荣; 郝广增
Original assignee: Xinxing Ductile Iron Pipes Co Ltd
Current assignee: Xinxing Ductile Iron Pipes Co Ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-04-13
Anticipated expiration: 2030-05-29

Abstract

The utility model provides a magnesium spraying gun device belongs to molten iron processing technology field, include: the device comprises a body, a blanking pipe and heat insulation filler. The end part of the body is provided with a reaction chamber, and an inner tube is arranged in the body in a penetrating way. The blanking pipe penetrates through the inner pipe and is used for communicating the reaction chamber. The heat insulation filler is arranged between the blanking pipe and the inner pipe and used for reducing heat conduction between the blanking pipe and the inner pipe. The utility model provides a magnesium spraying gun device has set up thermal-insulated stopping between unloading pipe and inner tube, reduces heat-conduction through thermal-insulated stopping, prevents that the intraductal high temperature of unloading from causing the material because high temperature takes place phenomenons such as jam, has improved the life of device.

Description

Magnesium spraying gun device

Technical Field

The utility model belongs to the technical field of the molten iron is handled, more specifically say, relate to magnesium spraying gun device.

Background

At present, in the production process of the nodular cast iron pipe, molten iron needs to be spheroidized, and the spheroidization process is a process of sending magnesium particles into the bottom of a ladle and enabling the molten iron and the magnesium particles to fully react to achieve the spheroidization of the molten iron. Because the reaction of the magnesium particles and the molten iron is severe, the molten iron rolls all the time, so that the vibration of the ladle is large, and the molten iron splashes seriously. After the spheroidizing device is used for a period of time, the blanking pipe can be blocked by iron slag in the reaction chamber, the blanking pipe needs to be replaced once the blockage occurs, because the spheroidizing device and the ladle cover are both high-temperature, a worker needs to step on the ladle cover to remove the spheroidizing device, the whole process needs thirty minutes, the production rhythm is influenced, the labor intensity of the worker is increased, and the scald is easily caused when the spheroidizing device works under the high-temperature state. Although the service life of the existing spheroidizing device is prolonged to a certain extent, the temperature of the blanking pipe is still too high in the spheroidizing process, the condition that magnesium grains are blocked in the blanking pipe is easily caused, and once the spheroidizing device is scrapped, the production cost is improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a magnesium spraying gun device, the temperature that aims at solving among the balling process unloading pipe is still too high, causes the condition of the intraductal jam magnesium grain of unloading easily, and in case take place then this balling device is scrapped, has improved the problem of the cost of production.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a magnesium lance apparatus comprising:

the reaction chamber is arranged at the end part of the body, and an inner pipe penetrates through the body;

the discharging pipe penetrates through the inner pipe and is used for communicating the reaction chamber; and

and the heat insulation filler is arranged between the blanking pipe and the inner pipe and used for reducing the heat conduction between the blanking pipe and the inner pipe.

As another embodiment of this application, the both ends of inner tube are equipped with the gasket respectively, two the gasket is used for the shutoff thermal-insulated stopping.

As another embodiment of this application, the both ends of inner tube inner chamber are equipped with separation portion respectively, separation portion is used for the shutoff thermal-insulated stopping.

As another embodiment of the present application, the blocking portion is bonded between the down pipe and the inner pipe.

As another embodiment of the application, a blocking material for blocking the inner pipe is fixed in the reaction chamber.

As another embodiment of the present application, the barrier material is high alumina cement.

As another embodiment of the present application, the spacers are welded and fixed to the inner pipe and the blanking pipe, respectively.

As another embodiment of the present application, the body is a refractory article.

As another embodiment of the present application, the inner tube is integrally formed with a gasket on a side away from the reaction chamber.

As another embodiment of the present application, the thermal insulation filler is quartz sand.

The utility model provides a magnesium spraying gun device's beneficial effect lies in: compared with the prior art, the utility model discloses the reaction chamber has been seted up at the tip of body to the magnesium spraying gun device, wears to be equipped with the inner tube at this internal. The blanking pipe penetrates through the inner pipe and is communicated with the reaction chamber. And heat insulation filler is arranged between the blanking pipe and the inner pipe. Owing to set up thermal-insulated stopping between unloading pipe and inner tube in this application, reduce heat-conduction through thermal-insulated stopping to prevent unloading intraductal high temperature when carrying out the desulfurization to the molten iron, cause the material because high temperature takes place phenomenons such as jam, improved the life of device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a magnesium spraying gun device according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic connection diagram of the blocking portion, the blanking tube and the inner tube according to the second embodiment of the present invention.

In the figure: 1. a body; 2. an inner tube; 3. heat insulation filler; 4. a discharging pipe; 5. a barrier material; 6. a reaction chamber; 7. a first gasket; 8. a second gasket; 9. a thermally insulating cavity; 10. a blocking part.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 2, a magnesium spraying gun device according to the present invention will now be described. A magnesium lance apparatus comprising: the device comprises a body 1, a blanking pipe 4 and heat insulation filler 3. The end of the body 1 is provided with a reaction chamber 6, and an inner tube 2 is arranged in the body 1 in a penetrating way. The feeding pipe 4 penetrates through the inner pipe 2 and is used for communicating with the reaction chamber 6. The heat insulation filling material 3 is arranged between the feeding pipe 4 and the inner pipe 2 and used for reducing heat conduction between the feeding pipe 4 and the inner pipe 2.

The utility model provides a magnesium spraying gun device's beneficial effect lies in: compared with the prior art, the utility model discloses magnesium spraying gun device has seted up the reacting chamber 6 at the tip of body 1, wears to be equipped with inner tube 2 in body 1. The feed pipe 4 penetrates the inner pipe 2 and communicates with the reaction chamber 6. And heat insulation filling materials 3 are arranged between the blanking pipe 4 and the inner pipe 2. Owing to set up thermal-insulated stopping 3 between unloading pipe 4 and inner tube 2 in this application, reduce heat-conduction through thermal-insulated stopping 3 to prevent that the unloading pipe 4 internal temperature is too high when carrying out the desulfurization to the molten iron, cause the material because high temperature takes place phenomenons such as jam, improved the life of device.

As a specific embodiment of the magnesium spraying gun device provided by the present invention, please refer to fig. 1 and 2, two ends of the inner tube 2 are respectively provided with a gasket, and the two gaskets are used for sealing the heat insulation filler 3. The gaskets are respectively welded and fixed between the inner pipe 2 and the blanking pipe 4. The gasket is two in this application, and a gasket laminating just is close to the setting of reacting chamber 6 on barrier material 5, and reacting chamber 6 is kept away from to another gasket. The gasket near the reaction chamber 6 is a first gasket 7, and the gasket far from the reaction chamber 6 is a second gasket 8. The axis of the first gasket 7 and the second gasket 8 is provided with a positioning hole for yielding the blanking pipe 4, the inner wall of the second gasket 8 is fixed on the blanking pipe 4, and the outer wall of the second gasket is fixedly connected with the inner wall of the inner pipe 2. The inner wall of the first gasket 7 is fixed on the blanking pipe 4, the outer wall of the first gasket is fixed on the inner wall of the reaction chamber 6 through the barrier material 5, and the side surface of the first gasket is fixedly connected with the end surface of the inner pipe 2. First gasket 7 and second gasket 8 are all full weld fixed between inner tube 2 and unloading pipe 4, and the diameter of unloading pipe 4 is less than the diameter of inner tube 2, through carrying out full weld with the gasket and connecting for form inclosed thermal-insulated chamber 9 between inner tube 2, unloading pipe 4 and two gaskets, this inclosed intracavity packing has thermal-insulated stopping 3, and its aim at has avoided revealing of thermal-insulated stopping 3 that causes when carrying out the desulfurization to the molten iron in inclosed thermal-insulated chamber 9 with thermal-insulated stopping 3 shutoff.

As a specific embodiment of the magnesium spraying gun device provided by the present invention, please refer to fig. 3, both ends of the heat insulation chamber 9 are filled with the blocking portion 10. In order to prevent leakage of the heat insulation filler 3 after the connection failure of the gasket and the inner pipe 2 or the discharging pipe 4 and improve the safety and stability of the structure, the side surface of the gasket facing the heat insulation cavity 9 is provided with the blocking part 10, the blocking part 10 can be a solid material formed by adding a curing agent at two ends of the heat insulation filler 3 and then curing the curing agent with the heat insulation filler 3, and the leakage of the heat insulation filler 3 can be avoided even after the gasket falls off by curing the two ends of the heat insulation filler 3. The separation portion 10 also can be flexible telescopic lantern ring, and the lantern ring chucking is between inner tube 2 and unloading pipe 4, and when desulfurizing the molten iron, the lantern ring is heated the inflation, and the inside and outside lateral surface of the lantern ring closely laminates respectively on unloading pipe 4 and inner tube 2 to ambient temperature is higher, and the tightness of the lantern ring is stronger, prevents finally that thermal-insulated stopping 3 reveals.

Referring to fig. 3, a blocking portion 10 is bonded between the feeding tube 4 and the inner tube 2. The gasket is fixedly connected with the inner pipe 2 and the blanking pipe 4 in a full-welding mode, but the body 1 can vibrate in the desulfurization process, and in order to avoid the failure of the connection of the separation part 10 caused by welding fixation, the separation part 10 is bonded between the inner pipe 2 and the blanking pipe 4. The high-temperature-resistant adhesive is used for the bonding separation part 10, the inorganic high-temperature-resistant adhesive is adopted in the application, the temperature resistance of the high-temperature-resistant adhesive can reach 1800 ℃, the high-temperature-resistant adhesive can be used in fire for a long time, the high-temperature-resistant inorganic adhesive is a high-temperature-resistant inorganic nano composite adhesive prepared by inorganic nano materials through polycondensation, the obtained adhesive is a suspension dispersion system with a neutral pH value through screening of component proportion and preparation process parameters, the high-temperature-resistant inorganic adhesive has strong bonding force and no corrosivity on a metal matrix, and can keep good bonding performance and corrosion resistance at high temperature, and the service life is long.

As a specific embodiment of the magnesium spraying gun device provided by the present invention, please refer to fig. 2, the separation material 5 for blocking the gap between the inner tube 2 and the discharging tube 4 is fixed in the reaction chamber 6. Since the reaction chamber 6 is a space in which magnesium reacts with molten iron and has a high temperature, the dam 5 is fixed to the side of the gasket facing the reaction chamber 6 in order to prevent the high molten iron from corroding members such as the gasket. The barrier material 5 is positioned in the reaction chamber 6, and the barrier material 5 covers the blanking pipe 4 and the gasket and the joint of the gasket and the inner pipe 2. The barrier material 5 is also a material resistant to high temperatures. A through hole communicated with the blanking pipe 4 is arranged on the blocking material 5 in a penetrating way, and the magnesium material conveyed by the blanking pipe 4 enters the reaction chamber 6 through the through hole arranged on the blocking material 5. The peripheral surface of the barrier material 5 is fixedly connected with the inner wall of the reaction chamber 6, and one side surface of the barrier material 5 far away from the reaction chamber 6 is attached to the gasket and the feeding pipe 4. One side of the outer edge of the gasket is attached to and fixedly connected with the end face of the inner tube 2, and the outer side face of the discharging tube 4 close to one end of the reaction chamber 6 is fixedly connected with the inner wall of the gasket. The end surface of the feeding pipe 4 is flush with the side surface of the gasket facing the reaction chamber 6.

As a specific embodiment of the magnesium spraying gun device provided by the present invention, please refer to fig. 2, the blocking material 5 is high alumina cement. The high-alumina cement is a fast-hardening, high-strength, heat-resistant and corrosion-resistant cementing material, and has the main characteristics of high early strength, high temperature and corrosion resistance. The high-alumina cement is mainly used for urgent projects of construction period, such as pressure prevention projects, roads, special emergency repair projects and the like. The high-alumina cement can be used as a cementing material of heat-resistant concrete. High aluminium cement in this application is used for completely cutting off molten iron and inner tube 2, gasket and unloading pipe 4, avoids the erosion of molten iron, guarantees the integrality of structure.

As a specific embodiment of the magnesium spraying gun device provided by the utility model, the body 1 is a refractory component. The lateral surface of body 1 directly contacts with the molten iron in this application, therefore is high temperature resistant finished piece. The reaction chamber 6 is arranged at one end of the body 1, and the reaction chamber 6 is internally provided with an opening. High-pressure nitrogen and magnesium particles are conveyed in the blanking pipe 4.

Reduce thermal conduction between inner tube 2 and unloading pipe 4 through thermal-insulated stopping 3 in this application, but when carrying out the desulfurization to the molten iron, because reasons such as rocking of body 1, the condition that the gasket drops can appear produces, scrap in order to prevent this application magnesium spray gun device's directness, owing to keep away from the equal fixed connection of second gasket 8 and inner tube 2 and unloading pipe 4 of reacting chamber 6, when thermal-insulated stopping 3 reveals, highly compressed nitrogen gas can be filled in thermal-insulated chamber 9 in the twinkling of an eye in unloading pipe 4, avoided the molten iron to flow into thermal-insulated chamber 9 and caused the stifled condition of dying of unloading pipe 4. Meanwhile, after the ladle is desulfurized, the gasket and the like need to be checked, redundant impurities in the reaction chamber 6 can be removed, the body 1 is vertically placed, the reaction chamber 6 is downwards arranged, and whether the air tightness of the heat insulation cavity 9 is good or not is judged by observing whether the heat insulation filler 3 leaks or not.

As a concrete implementation mode of the magnesium spraying gun device provided by the utility model, the inner tube 2 and the gasket which is far away from one side of the reaction chamber 6 are integrally formed. In order to reduce the number of steps for fixing the gasket to the inner tube 2 and improve the sealing property in the heat insulating chamber 9, the gasket on the side away from the reaction chamber 6 is set as a second gasket 8, the second gasket 8 may be formed integrally with the inner tube 2, and the second gasket 8 may be regarded as a folded edge of the inner tube 2 toward the axis thereof.

As a specific embodiment of the magnesium spray gun device provided by the present invention, the heat insulation filler 3 is quartz sand. Quartz sand is a hard, wear-resistant, chemically stable silicate mineral, the main mineral component of which is SiO₂The quartz sand is milky white or colorless and translucent, has a hardness of 7, and has chemical, thermal and mechanical propertiesIt has obvious anisotropy, is insoluble in acid, slightly soluble in KOH solution and has a melting point of 1750 ℃. The unique physical and chemical characteristics of the quartz sand enable the quartz sand to play a significant role in aviation, aerospace, electronics, machinery and the current rapidly-developed IT industry, particularly the internal molecular chain structure, crystal shape and lattice change rule of the quartz sand enable the quartz sand to have the performances of high temperature resistance, small thermal expansion coefficient, heat insulation, heat preservation and the like, and meanwhile, the price of the quartz sand is low. In the body 1 need go deep into the molten iron, because the temperature of molten iron is too high, the heat of molten iron passes through body 1 and transmits to inner tube 2, along with the improvement of inner tube 2 temperature, unnecessary heat conduction is to quartz sand. Through set up quartz sand between inner tube 2 and unloading pipe 4, reduced the transmission of heat to unloading pipe 4, made unloading pipe 4 can keep lower temperature, unloading pipe 4 is hollow structure, and unloading pipe 4 one end is used for communicateing with the magnesium source, and the other end communicates with reaction chamber 6. The blanking pipe 4 is a transmission device, and the temperature in the blanking pipe 4 is reduced through quartz sand, so that the problems of blockage and the like of the blanking pipe 4 caused by overhigh temperature are avoided.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Magnesium spraying gun device, its characterized in that includes:

2. The magnesium spraying gun device according to claim 1, wherein two ends of the inner tube are respectively provided with a gasket, and the two gaskets are used for sealing the heat insulation filling material.

3. The magnesium spraying gun device according to claim 1 or 2, wherein both ends of the inner cavity of the inner tube are respectively provided with a blocking part for blocking the heat insulation filler.

4. The magnesium lance device according to claim 3 wherein the dam is bonded between the feed tube and the inner tube.

5. The magnesium lance device according to claim 1, wherein a blocking material for blocking the inner tube is fixed in the reaction chamber.

6. The magnesium lance device according to claim 5 wherein the barrier material is high alumina cement.

7. The magnesium lance device according to claim 2 wherein the spacers are welded to the inner tube and the down tube, respectively.

8. The magnesium lance device according to claim 1 wherein the body is a refractory article.

9. The magnesium lance device according to claim 1 wherein the inner tube is integrally formed with a gasket on a side remote from the reaction chamber.

10. The magnesium lance defined in claim 1 wherein the heat insulating filler is silica sand.