Furnace top water gun structure

Abstract

The utility model relates to a furnace top water gun structure, and relates to the technical field of blast furnace smelting equipment. The spray gun comprises a gun body and a gun head, a water inlet is formed in one end of the gun body, an air inlet is formed in the bottom wall of the gun body, the gun head is connected to the end, away from the water inlet, of the gun body, the gun head comprises a transition connector, a nozzle, a large nut and a check ring, the transition connector is connected with the gun body, and the nozzle is arranged at the end, away from the gun body, of the transition connector. The large nut is in threaded connection with the peripheral wall of the transition joint, the large nut is used for fixing the nozzle and the transition joint, the check ring is connected between the nozzle and the transition joint in an abutting mode, a flow channel is formed in the transition joint, and a one-way valve used for isolating an opening of the flow channel from the external space is arranged in the nozzle. The water gun has the advantages that the problem that a nozzle of the water gun is easily blocked by dust overflowing from the furnace is solved, the atomization effect and the cooling effect of the water gun are guaranteed, and the normal blast furnace production process is maintained.

Description

Technical Field

[0001] The present application relates to the technical field of blast furnace smelting equipment, and in particular to a furnace top water gun structure. Background Art

[0002] A blast furnace is a metallurgical furnace used to smelt and produce industrial metals. It is mainly used to produce iron, but can also smelt other metals such as lead and copper. It has important applications in the field of industrial production.

[0003] The control of blast furnace top temperature is one of the important factors affecting blast furnace output, and also affects the smoothness of bag dust discharge. Too high top temperature is not conducive to gas utilization, increases heat loss, and affects blast furnace output; too low top temperature will cause condensation on dust bags and adhere to dust, resulting in poor air permeability of dust bags. High pressure difference and poor backflush effect can easily cause bag compaction and damage; therefore, top temperature control is particularly important.

[0004] Nowadays, blast furnaces have introduced equipment and related operations for pumping water from the furnace top. However, the complex working conditions in the furnace often lead to damage to the water gun. For example, if there is a lot of dust in the furnace and the water gun is not well sealed, the nozzle of the water gun may be blocked by dust, which will reduce the atomization and cooling effects, making it difficult to lower the top temperature, and then cause the gun head to be burned. At the same time, the amount of water required for the water gun also increases, resulting in an increase in the moisture content of the coal gas, affecting the production quality, so it needs to be improved. Utility Model Content

[0005] In order to improve the problem that the nozzle of the water gun is easily blocked by dust overflowing from the furnace, ensure the atomization effect and cooling effect of the water gun, and maintain the normal blast furnace production process, the present application provides a furnace top water gun structure.

[0006] The present application provides a furnace top water gun structure adopting the following technical solution:

[0007] A stove top water gun structure comprises a gun body and a gun head, wherein a water inlet is arranged at one end of the gun body, an air inlet is arranged at the bottom wall of the gun body, the gun head is connected to the end of the gun body away from the water inlet, the gun head comprises a transition joint, a nozzle, a large nut and a stop ring, the transition joint is connected to the gun body, the nozzle is arranged at the end of the transition joint away from the gun body, the large nut is threadedly connected to the peripheral wall of the transition joint, the large nut is used to fix the nozzle to the transition joint, the stop ring abuts between the nozzle and the transition joint, a flow channel is opened in the transition joint, and a one-way valve for isolating the flow channel opening from the external space is arranged in the nozzle.

[0008] By adopting the above technical scheme, when water pumping is not performed, under the action of the one-way valve, external dust will not enter the flow channel of the transition joint through the nozzle, thereby effectively preventing dust from compacting and blocking the gun head, resulting in poor water pumping effect, reducing the water content of coal gas, and extending the service life of the furnace top water pumping; when water pumping is required, water and gas enter the gun body through the water inlet and the air inlet respectively, and flow through the gun body to the gun head. When the water vapor pressure is greater than the resistance applied by the one-way valve, the one-way valve will open, and water vapor will be sprayed toward the blast furnace through the nozzle to perform water pumping and cooling, thereby ensuring the water pressure, which can effectively improve the atomization effect and the cooling effect.

[0009] Optionally, the one-way valve includes a valve body, an elastic member and a ball, the valve body is coaxially arranged with the transition joint, the elastic member is arranged in the valve body, the ball is arranged at one end of the elastic member close to the transition joint, the ball passes through a stop ring, and the elastic member abuts the ball against the flow channel opening.

[0010] By adopting the above technical solution, when water is not being pumped, the elastic member will abut the sphere against the opening of the flow channel to block the flow channel to prevent external dust from entering. When water is being pumped, water vapor is mixed and the pressure is greater than the elastic force of the elastic member, the sphere is pushed open and water can be pumped, which can ensure both the atomization pressure and the atomization effect, thereby improving the water pumping effect.

[0011] Optionally, a sealing groove is provided on a side of the transition joint facing the stop ring in a circumferential direction, a sealing ring is provided in the sealing groove, and the sealing ring abuts between the bottom wall of the sealing groove and the stop ring.

[0012] By adopting the above technical solution, the sealing ring can effectively prevent external dust from entering between the transition joint and the gun body, effectively prevent dust from compacting and blocking the gun head, resulting in poor water pumping effect, and extend the service life of the water gun; at the same time, it can save water and improve the problem of high water content in coal gas.

[0013] Optionally, the transition joint is threadedly connected to the gun body, and thread glue is applied at the threaded connection between the transition joint and the gun body.

[0014] By adopting the above technical solution, a threaded connection is set between the transition joint and the gun body, which is convenient for quick disassembly and repair and replacement of the gun head when it is damaged, and has high practicality; applying thread glue can further improve the sealing reliability of the gun head of the present application.

[0015] Optionally, a retaining ring is provided on the inner wall of the large nut.

[0016] By adopting the above technical solution, the retaining ring is provided to prevent the radial shaking of the nozzle, thereby improving the stability and sealing of the gun head structure and reducing the penetration of external dust.

[0017] Optionally, a plurality of positioning holes are provided on the end wall of the transition joint facing the gun body.

[0018] By adopting the above technical solution, the positioning hole is used as a processing positioning hole to maintain the installation coaxiality of the transition joint and the gun body.

[0019] Optionally, a convex flange is provided on the peripheral wall of the gun body.

[0020] By adopting the above technical solution, a convex flange is provided to facilitate fixing the gun body to the furnace shell of the blast furnace, thereby effectively reducing the impact of blast furnace vibration on the water gun and maintaining the stability and safety of the water gun.

[0021] Optionally, the gun body and the gun head are both made of 316L stainless steel.

[0022] By adopting the above technical solution, the gun body and the gun head are made of 316L stainless steel, so that the water gun can maintain the safety of the structure when working in an environment full of water mist and high temperature for a long time, delay the corrosion process, extend the service life, and enable the water gun to maintain normal water-dispensing function.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Sealing ring and one-way valve are set to effectively prevent dust from forming and blocking the gun head, resulting in poor water pumping effect, reducing the water content of gas and extending the service life of the furnace top water pump;

[0025] 2. The gun head adopts threaded connection structures in many places, so that the water gun of the present application is easy to disassemble, repair and replace in time, and has high convenience and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a furnace top water gun structure in an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the structure of the gun head in the embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. gun body; 2. gun head; 21. positioning hole; 22. sealing ring; 23. transition joint; 231. flow channel; 232. sealing groove; 24. large nut; 25. retaining ring; 26. stop ring; 27. nozzle; 28. one-way valve; 281. valve body; 282. elastic part; 283. sphere; 3. convex flange; 4. water inlet; 5. air inlet. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-2 This application is described in further detail.

[0030] The present application embodiment discloses a furnace top water gun structure. Figure 1 , including a gun body 1 and a gun head 2. In this embodiment, the gun body 1 and the gun head 2 are both made of 316L stainless steel to improve the overall corrosion resistance and extend the service life of the water gun; a water inlet 4 is provided at one end of the gun body 1, an air inlet 5 is provided on the bottom wall of the gun body 1, and a channel is opened in the gun body 1 for water and gas circulation; a convex flange 3 is provided on the peripheral wall of the gun body 1 by welding to fix the water gun to the luke of the blast furnace and improve its stability.

[0031] Reference Figure 1 and Figure 2 The gun head 2 is arranged at the end of the gun body 1 away from the water inlet 4. The gun head 2 includes a transition joint 23, a nozzle 27, a large nut 24 and a stop ring 26. A threaded section is integrally formed at one end of the transition joint 23. The threaded section is inserted into the channel of the gun body 1 and forms a threaded connection with the gun body 1 to facilitate installation and disassembly. The transition joint 23 is provided with a flow channel 231 along the axial direction. The flow channel 231 is coaxially provided with the channel of the gun body 1 to provide water and gas circulation; a plurality of positioning holes 21 are provided on the end wall of the transition joint 23 facing the gun body 1, and a plurality of positioning holes 21 are provided along the axial direction of the transition joint 23 to ensure the precise processing of the transition joint 23, thereby ensuring the coaxial installation of the transition joint 23 and the gun body 1.

[0032] Reference Figure 2 The nozzle 27 is arranged at the end of the transition joint 23 away from the gun body 1, and the nozzle 27 is provided with a plurality of outlets for water gas to pass through; the transition joint 23 comprises a large diameter portion and a small diameter portion, the small diameter portion is a pipeline including a threaded section, the flow channel 231 is opened in the small diameter portion, the large diameter portion is integrally formed on the outer wall of the small diameter portion, the large diameter portion is against the end wall of the gun body 1, a plurality of positioning holes 21 are opened at the end of the large diameter portion, and a stepped groove is opened along the circumferential direction at the end of the large diameter portion away from the gun body 1, and a large nut 24 is provided in the stepped groove for threading The inner wall of the end of the large nut 24 away from the gun body 1 extends toward the center of the circle and forms a protrusion. One end of the nozzle 27 passes through the large nut 24, and the outer wall of the end passing through the large nut 24 is also formed with a protrusion, which abuts against the protruding inner wall of the large nut 24, so that the nozzle 27 and the transition nozzle are fixed through the large nut 24; a retaining ring 25 is provided on the inner wall of the large nut 24, and the retaining ring 25 abuts against the protruding outer wall of the peripheral wall of the nozzle 27 to prevent radial movement of the nozzle 27 and maintain its stability.

[0033] Reference Figure 2The stop ring 26 is arranged between the nozzle 27 and the transition joint 23. The stop ring 26 includes a circular portion and an extension portion. The circular portion is coaxially arranged with the transition joint 23. The extension portion is integrally formed on the side of the circular portion facing the transition joint 23. The extension portion is sleeved outside the small diameter portion of the transition structure, and an inclined surface is provided inside the extension portion. One end of the extension portion away from the circular portion protrudes toward the outside, and the protrusion abuts between the bottom wall of the nozzle 27 and the large diameter portion of the transition joint 23. The outside of the extension abuts against the inner wall of the nozzle 27. The stop ring 26 is used to prevent the axial movement of the nozzle 27, thereby maintaining its overall stability.

[0034] Reference Figure 2 A sealing groove 232 is provided along the circumferential direction on the end wall of the large diameter portion of the transition joint 23 facing the stop ring 26, and a sealing ring 22 is provided in the sealing groove 232 by gluing. The sealing ring 22 abuts between the bottom wall of the extended portion of the stop ring 26 and the bottom wall of the sealing groove 232 to prevent external dust from entering between the gun body 1 and the transition joint 23, and to prevent dust from caking and affecting the normal operation of the water gun. In this embodiment, the sealing ring 22 is made of silicone rubber with high heat resistance to prevent it from melting under the high temperature of the blast furnace and maintain structural safety.

[0035] Reference Figure 1 A one-way valve 28 is provided in the nozzle 27 to isolate the flow channel 231 from the external space. The one-way valve 28 includes a valve body 281, an elastic member 282 and a ball 283. The valve body 281 is connected to the inner wall of the nozzle 27 by welding. The valve body 281 is coaxially arranged with the transition joint 23. The valve body 281 is hollow, and the elastic member 282 is arranged in the hollow part of the valve body 281. In this embodiment, the elastic member 282 is a spring, one end of which is connected to the inner wall of the hollow part of the valve body 281 by gluing, and the ball 283 is connected to the other end of the elastic member 282 by gluing. The ball 283 passes through the stop ring 26. When no water is pumped, under the action of the elastic member 282, the ball 283 blocks the opening of the flow channel 231 to prevent external dust from entering.

[0036] The implementation principle of a furnace top water gun structure of the embodiment of the present application is as follows: when water is not being pumped, under the action of the one-way valve 28 and the sealing ring 22, external dust will not enter the flow channel 231 of the transition joint 23 through the nozzle 27, thereby effectively preventing dust from being condensed and blocking the gun head 2, resulting in poor water pumping effect, reducing the water content of coal gas, and extending the service life of the furnace top water pumping; when water pumping is required, water and gas enter the gun body 1 through the water inlet 4 and the air inlet 5 respectively, and flow to the gun head 2 through the gun body 1. When the water vapor pressure is greater than the resistance applied by the one-way valve 28, the elastic member 282 is compressed, the ball 283 leaves the flow channel 231, and the water vapor will be sprayed toward the blast furnace through the nozzle 27 to pump water and cool down, ensuring the water pressure, which can effectively improve the atomization effect and the cooling effect; the present application is provided with a sealing ring 22 and a one-way valve 28, which effectively prevent dust from being condensed and blocking the gun head 2, resulting in poor water pumping effect, reducing the water content of coal gas, and extending the service life of the furnace top water pumping.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A furnace top water gun structure, characterized in that: The invention comprises a gun body (1) and a gun head (2), wherein one end of the gun body (1) is provided with a water inlet (4), the bottom wall of the gun body (1) is provided with an air inlet (5), the gun head (2) is connected to an end of the gun body (1) away from the water inlet (4), the gun head (2) comprises a transition joint (23), a nozzle (27), a large nut (24) and a stop ring (26), the transition joint (23) is connected to the gun body (1), and the nozzle (27) is arranged on the transition joint (23). At one end away from the gun body (1), the large nut (24) is threadedly connected to the peripheral wall of the transition joint (23), the large nut (24) is used to fix the nozzle (27) and the transition joint (23), the stop ring (26) is abutted between the nozzle (27) and the transition joint (23), a flow channel (231) is provided in the transition joint (23), and a one-way valve (28) is provided in the nozzle (27) for isolating the opening of the flow channel (231) from the external space.

2. A furnace top water gun structure according to claim 1, characterized in that: The one-way valve (28) comprises a valve body (281), an elastic member (282) and a ball (283); the valve body (281) is coaxially arranged with the transition joint (23); the elastic member (282) is arranged in the valve body (281); the ball (283) is arranged at one end of the elastic member (282) close to the transition joint (23); the ball (283) passes through a stop ring (26); and the elastic member (282) abuts the ball (283) against the opening of the flow channel (231).

3. A furnace top water gun structure according to claim 1, characterized in that: A sealing groove (232) is provided along the circumferential direction on one side of the transition joint (23) facing the stop ring (26), a sealing ring (22) is arranged in the sealing groove (232), and the sealing ring (22) abuts between the bottom wall of the sealing groove (232) and the stop ring (26).

4. A furnace top water gun structure according to claim 3, characterized in that: The transition joint (23) is threadedly connected to the gun body (1), and thread glue is applied at the threaded connection between the transition joint (23) and the gun body (1).

5. The furnace top water gun structure according to claim 1, characterized in that: A retaining ring (25) is arranged on the inner wall of the large nut (24).

6. The furnace top water gun structure according to claim 1, characterized in that: The end wall of the transition joint (23) facing the gun body (1) is provided with a plurality of positioning holes (21).

7. The furnace top water gun structure according to claim 1, characterized in that: The peripheral wall of the gun body (1) is provided with a convex flange (3).

8. The furnace top water gun structure according to claim 1, characterized in that: The gun body (1) and the gun head (2) are both made of 316L stainless steel.

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