Anti-blocking structure of steelmaking spray gun

Abstract

The utility model discloses a steelmaking spray gun anti-blocking structure which comprises a gun body, a switch, a gas inlet, an auxiliary gas cylinder, an adjusting knob, a spray head and a communicating pipe, an anti-blocking mechanism is arranged at the front end of the spray head and comprises an equipment shell, one side of the equipment shell is fixedly connected with a communicating plug, and the communicating plug is fixedly connected with the gun body. Air ports used for air inflow are formed in the two ends of the communicating plug, rotating grooves are formed in the two sides of the equipment shell, a wind wheel is rotationally connected to the interior of one rotating groove, and a gear is fixedly connected to the tail end of the wind wheel; by means of the equipment, stable proceeding of oxidation, desulfurization, dephosphorization and other reactions in the steelmaking process can be guaranteed, the steel quality is improved, the situation that a spray gun is frequently replaced due to blockage of the spray gun is reduced, the production efficiency is improved, the equipment maintenance cost is reduced, the slag prevention effect is enhanced, continuous smoothness of a spray head is guaranteed, injection operation is stabilized, and the service life of the spray gun is prolonged. And the method plays an important role in improving the steelmaking quality and the production continuity.

Description

Technical Field

[0001] This utility model relates to the field of steelmaking spray gun technology, specifically a steelmaking spray gun anti-clogging structure. Background Technology

[0002] Steelmaking lances are indispensable key equipment in the steelmaking process. They are typically made of special alloy materials that are resistant to high temperatures and wear. Structurally, they include gas or material conveying channels. Their main function is to inject gases such as oxygen and nitrogen, as well as powdered materials such as lime powder and desulfurizing agents, into the steelmaking furnace at specific flow rates, pressures, and angles. Through the injection of the lance, oxygen reacts with impurities in the molten steel, removing elements such as carbon and phosphorus and increasing the purity of the steel. The powdered materials participate in refining processes such as desulfurization and dephosphorization, improving the steel's properties.

[0003] However, in the actual steelmaking process, the smooth flow of the spray gun is crucial. Once the spray gun becomes clogged, the flow rate, pressure, and distribution of the sprayed gas or material will be severely affected. For example, when spraying oxygen, clogging may lead to insufficient or uneven oxygen supply, preventing impurities in the molten steel from being fully oxidized and removed, thus greatly reducing the purity and quality of the steel. If powdered materials such as desulfurizers are being sprayed, clogging will prevent the materials from accurately and sufficiently reacting with the molten steel, making it difficult to guarantee the refining effects such as desulfurization. Moreover, spray gun clogging will also lead to the need for frequent spray gun replacements, which not only consumes a lot of time and causes production interruptions, greatly reducing production efficiency, but also increases equipment maintenance costs.

[0004] To address this issue, this invention provides an anti-clogging structure for steelmaking spray guns, thereby resolving the problem mentioned above where the flow rate, pressure, and distribution of the sprayed gas or material are severely disrupted once the spray gun becomes clogged. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an anti-clogging structure for steelmaking spray guns, thus solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a steelmaking spray gun anti-clogging structure, comprising a gun body, a switch, an air inlet, an auxiliary gas cylinder, an adjustment knob, a nozzle, and a connecting pipe. The nozzle has an anti-clogging mechanism at its front end, which includes a housing. A connecting plug is fixedly connected to one side of the housing, and air inlets for air intake are opened at both ends of the connecting plug. Rotary grooves are opened on both sides of the housing, and a fan is rotatably connected inside one of the grooves. A gear is fixedly connected to the end of the fan, so that gas drives the fan to rotate, thereby causing the gear to rotate. An anti-backflow mechanism is also provided inside the housing.

[0007] The anti-backflow mechanism includes a device base and a fixing plate fixed inside the device housing. A gear ring is rotatably connected to the device base, and the gear ring is fixedly connected to the fixing plate by a torsion spring. A tooth groove matching the gear is opened on the outer side of one end of the gear ring, and four teeth are opened on the inner side of the gear ring. An auxiliary gas cylinder and a rotating plate are also rotatably connected to the fixing plate, and one end of each of the four rotating plates is opened with a tooth groove matching the inner teeth of the gear ring, so that the rotating plate will rotate and open when the gear ring rotates.

[0008] Preferably, both ends of the connecting plug are connected to two connecting pipes through air ports, and the other ends of the two connecting pipes are connected to the rotating grooves on both sides of the equipment housing.

[0009] Preferably, the equipment housing is further provided with a slag-preventing mechanism, which includes a rotating shaft. The equipment housing is provided with a matching movable groove for the rotating shaft. A wind ring is fixedly connected to the side of the rotating shaft. The equipment housing is also provided with a connecting port near the end of the rotating groove, so that when gas blows through the connecting port from the rotating groove, it drives the rotating shaft to rotate.

[0010] Preferably, the auxiliary gas cylinder is connected to the gun body through a connecting pipe, the adjusting knob is used to adjust the flow rate of gas delivered from the auxiliary gas cylinder to the gun body, the switch is installed on the gun body to control the delivery of gas or material in the gun body, and the nozzle is installed at one end of the gun body, and the nozzle is provided with multiple spray holes.

[0011] Preferably, the air ring is provided with equidistant air vanes, and the rotating shaft and the opposite side wall of the equipment housing are movably connected with ball bearings to reduce friction.

[0012] Preferably, all four rotating plates are rotatably connected between the equipment base and the fixed plate via rotating shafts, and the ends of all four rotating plates are arc-shaped circular plates so that the nozzles are blocked when the four rotating plates are closed.

[0013] Preferably, a limiting rod is fixedly connected to the wind turbine and the gear, and a limiting ring matching the limiting rod is fixedly connected inside one of the rotating grooves.

[0014] Beneficial effects

[0015] This utility model provides an anti-clogging structure for steelmaking spray guns. Compared with the prior art, it has the following advantages:

[0016] Beneficial effects:

[0017] (1) The anti-clogging structure of the steelmaking spray gun allows gas to enter through the gas inlet and flow into the rotating trough to drive the impeller to rotate, which in turn drives the gear to rotate. This causes the gear ring to rotate against the spring force of the torsion spring. The gear ring drives the rotating plate to open, ensuring that the nozzle orifice is unobstructed and that gas or material can be sprayed out smoothly. When the spray gun stops working, the gear ring resets under the action of the torsion spring, which drives the rotating plate to close, preventing impurities such as molten steel from flowing back and clogging the nozzle. This avoids abnormal gas or material transport caused by clogging, ensures the stable progress of oxidation, desulfurization, dephosphorization and other reactions during the steelmaking process, improves the quality of steel, reduces the need to frequently replace the spray gun due to clogging, improves production efficiency and reduces equipment maintenance costs.

[0018] (2) The anti-clogging structure of this steelmaking spray gun works by using gas to drive the rotating shaft as it passes through the connecting port from the rotating trough. This causes the air ring fixed to the side of the rotating shaft to rotate synchronously. The air ring is composed of equidistant air vanes, which generate directional airflow during rotation. During the steelmaking process, impurities such as slag tend to approach the nozzle, and the airflow generated by the air ring can blow these impurities away from the nozzle, preventing them from adhering to or entering the nozzle and causing blockage. At the same time, the ball bearings on the opposite side walls of the rotating shaft and the equipment casing reduce the friction during the rotation of the rotating shaft, making the air ring rotate more smoothly, enhancing the anti-slag effect, ensuring the continuous unobstructed flow of the nozzle, stabilizing the spraying operation, and playing an important role in improving steelmaking quality and production continuity. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is an exploded view of the overall structure of this utility model;

[0021] Figure 3 This is an exploded view of the anti-blocking mechanism of this utility model;

[0022] Figure 4 This is an exploded view of the anti-backflow mechanism of this utility model;

[0023] Figure 5 This is a structural breakdown diagram of the slag-prevention mechanism of this utility model;

[0024] Figure 6 This is a detailed drawing of the gear structure of this utility model.

[0025] In the diagram: 1. Gun body; 2. Switch; 3. Air inlet; 4. Auxiliary gas cylinder; 5. Adjustment knob; 6. Nozzle; 7. Connecting pipe;

[0026] 8. Anti-blocking mechanism; 81. Equipment casing; 82. Connecting plug; 83. Air inlet; 84. Rotary trough; 85. Fan wheel; 86. Gear; 87. Limiting rod; 88. Limiting ring;

[0027] 9. Anti-backflow mechanism; 91. Equipment base; 92. Fixing plate; 93. Gear ring; 94. Rotating plate;

[0028] 10. Slag prevention mechanism; 101. Rotating shaft; 102. Air ring; 103. Movable groove; 104. Connecting port. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1:

[0031] Please see Figures 1 to 6 A steelmaking spray gun anti-clogging structure includes a gun body 1, a switch 2, an air inlet 3, an auxiliary gas cylinder 4, an adjustment knob 5, a nozzle 6, and a connecting pipe 7. The nozzle 6 is provided with an anti-clogging mechanism 8 at its front end. The anti-clogging mechanism 8 includes an equipment shell 81. A connecting plug 82 is fixedly connected to one side of the equipment shell 81. Air inlets 83 for air intake are opened at both ends of the connecting plug 82. Rotary grooves 84 are opened on both sides of the equipment shell 81. A fan wheel 85 is rotatably connected inside one of the rotating grooves 84, and a gear 86 is fixedly connected to the end of the fan wheel 85 so that the gas drives the fan wheel 85 to rotate, thereby causing the gear 86 to rotate. An anti-backflow mechanism 9 is also provided inside the equipment shell 81.

[0032] The anti-backflow mechanism 9 includes an equipment base 91 and a fixing plate 92 fixed inside the equipment housing 81. A gear ring 93 is rotatably connected to the equipment base 91, and the gear ring 93 is fixedly connected to the fixing plate 92 by a torsion spring. One end of the outer surface of the gear ring 93 has a tooth groove that matches the gear 86, and the inner surface of the gear ring 93 has four teeth. Four auxiliary gas cylinder rotating plates 94 are also rotatably connected to the fixing plate 92, and one end of each of the four rotating plates 94 has a tooth groove that matches the teeth on the inner surface of the gear ring 93, so that the rotating plates are driven when the gear ring 93 rotates. 94 is rotated open, and the four rotating plates 94 are all rotatably connected between the equipment base 91 and the fixed plate 92 through a fixed axis. The ends of the four rotating plates 94 are all arc-shaped circular plates so that the nozzle 6 is blocked when the four rotating plates 94 are closed. Both ends of the connecting plug 82 are connected to two connecting pipes 7 through air ports 83, and the other ends of the two connecting pipes 7 are connected to the rotating grooves 84 on both sides of the equipment shell 81. Limiting rods 87 are fixedly connected to the impeller 85 and the gear 86, and a limiting ring 88 matching the limiting rod 87 is fixedly connected inside one of the rotating grooves 84.

[0033] During operation, gas enters the gun body 1 through the air inlet 3. A portion of the gas travels through the connecting pipe 7 to the air port 83 of the connecting plug 82. The gas entering the air port 83 flows into the rotating grooves 84 on both sides of the equipment housing 81, driving the impeller 85 inside the rotating grooves 84 to rotate. The gear 86 fixed at the end of the impeller 85 rotates accordingly. The rotation of the gear 86 drives the gear ring 93 that meshes with it to rotate. The gear ring 93 overcomes the tension of the torsion spring, and the meshing teeth on the inner side of the gear ring 93 interact with the tooth grooves at one end of the rotating plate 94, causing the four rotating plates 94 to rotate and open around a fixed axis. At this time, the nozzle 6... When the nozzle is in a clear state, gas or material can be sprayed out smoothly. When the spray gun stops working, the gas no longer drives the impeller 85 to rotate, and the toothed ring 93 rotates in the opposite direction under the action of the torsion spring, driving the rotating plate 94 to rotate back to the initial position. The four rotating plates 94 close and block the nozzle 6 to prevent impurities such as molten steel from flowing back into the nozzle 6 and causing blockage. When the limit rod 87 rotates to abut against the limit ring 88, the four rotating plates 94 open completely. When the gas no longer drives the impeller 85 to rotate, it resets under the action of the torsion spring inside the impeller 85, and the four rotating plates 94 close again.

[0034] Example 2:

[0035] Please see Figures 1 to 6 This embodiment provides a technical solution based on embodiment one: the inside of the equipment housing 81 is also provided with a slag-preventing mechanism 10, the slag-preventing mechanism 10 includes a rotating shaft 101, and the inside of the equipment housing 81 is provided with a matching movable groove 103 for the rotating shaft 101. A wind ring 102 is fixedly connected to the side of the rotating shaft 101. The end of the equipment housing 81 near the rotating groove 84 is also provided with a connecting port 104, so that when the gas blows from the rotating groove 84 through the connecting port 104, it drives the rotating shaft 101 to rotate. The auxiliary gas cylinder 4 is connected to the gun body 1 through the connecting pipe 7. The adjusting knob 5 is used to adjust the flow rate of the gas delivered from the auxiliary gas cylinder 4 to the gun body 1. The switch 2 is installed on the gun body 1 and is used to control the delivery of gas or material in the gun body 1. The nozzle 6 is installed at one end of the gun body 1 and is provided with multiple spray holes. The wind ring 102 is provided with equidistant wind blades, and the rotating shaft 101 and the side wall opposite to the equipment housing 81 are movably connected with ball bearings for reducing friction.

[0036] During operation, when gas is blown from the rotating trough 84 through the connecting port 104, it drives the rotating shaft 101 in the anti-slag mechanism 10 to rotate. The air ring 102 fixed on the side of the rotating shaft 101 rotates accordingly. Since the air ring 102 is set with equidistant air vanes, the rotating air ring 102 generates airflow, which blows steel slag and other impurities that may approach the nozzle 6 away from the direction of the nozzle 6, thus playing a slag-prevention role. At the same time, the auxiliary gas cylinder 4 is connected to the gun body 1 through the connecting pipe 7, and the adjusting knob 5 can adjust the supply of auxiliary gas cylinder 4 into the gun body 1. The gas flow rate is adjusted according to the actual steelmaking needs to ensure the blowing effect. Switch 2 controls the delivery of gas or material inside the gun body 1. The nozzle 6 is installed at one end of the gun body 1, and multiple nozzle holes on it are used to blow gas or material. In addition, the ball bearings are movably connected to the opposite side wall of the rotating shaft 101 and the equipment housing 81. The friction between the rotating shaft 101 and the opposite side wall of the equipment housing 81 is reduced when the rotating shaft 101 rotates, so that the air ring 102 rotates more smoothly and the slag prevention effect is improved.

[0037] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0038] Working principle: During operation, gas first enters the gun body 1 through the air inlet 3, passes through the connecting pipe 7 to the air port 83 of the connecting plug 82, and then flows into the rotating grooves 84 on both sides of the equipment housing 81, pushing the impeller 85 inside the rotating groove 84 to rotate. The impeller 85 drives the gear 86 to rotate. (By setting the tilt direction of the blades on the impeller 85, the rotation direction of the impeller 85 can be controlled when the gas blowing direction remains unchanged.) The gear 86 causes the gear ring 93 to rotate against the torsion spring force. The gear ring 93 drives the rotating plate 94 to rotate around the fixed axis and open, spraying... When the nozzle 6 is unobstructed, gas or material is ejected smoothly. The spray gun stops working, and the toothed ring 93 rotates in the opposite direction under the action of the torsion spring. The rotating plate 94 rotates back to close and block the nozzle 6, preventing impurities from flowing back. At the same time, the gas blown out from the rotating groove 84 through the connecting port 104 drives the rotating shaft 101 and the air ring 102 to rotate, generating airflow to blow away the steel slag near the nozzle 6, which plays a role in preventing slag. The adjusting knob 5 can adjust the flow rate of gas delivered from the auxiliary gas cylinder 4 into the gun body 1. The switch 2 controls the delivery of gas or material into the gun body 1.

Claims

1. A kind of steelmaking lance anti-blocking structure, including gun body (1), switch (2), air inlet (3), auxiliary gas cylinder (4), adjusting knob (5), spray head (6) and communicating tube (7), it is characterized by: The front end of the spray head (6) is provided with an anti-blocking mechanism (8), the anti-blocking mechanism (8) comprises a device shell (81), one side of the device shell (81) is fixedly connected with a communication plug (82), both ends of the communication plug (82) are provided with air ports (83) for air inlet, both sides of the device shell (81) are provided with rotating grooves (84), one of the rotating grooves (84) is rotatably connected with a wind wheel (85), and the tail end of the wind wheel (85) is fixedly connected with a gear (86), and the inside of the device shell (81) is also provided with an anti-reflux mechanism (9). The anti-reflux mechanism (9) comprises a device base (91) and a fixed plate (92) fixed in the inside of the device shell (81), the device base (91) is rotatably connected with a gear ring (93), and the gear ring (93) is fixedly connected with the fixed plate (92) through a torsion spring, one end of the outer side of the gear ring (93) is provided with a gear groove matched with the gear (86), and the inner side of the gear ring (93) is provided with four meshing teeth, and the fixed plate (92) is also rotatably connected with four auxiliary gas cylinders (4) rotating plates (94), and one end of the four rotating plates (94) is provided with a gear groove matched with the inner side meshing teeth of the gear ring (93).

2. A clogging prevention structure for a steelmaking lance according to claim 1, characterized in that: Both ends of the communication plug (82) are communicated with two communication pipes (7) through the air ports (83), and the other ends of the two communication pipes (7) are communicated with the rotating grooves (84) on both sides of the device shell (81).

3. A clog-resistant structure for a steelmaking lance according to claim 1, characterized in that: The inside of the device shell (81) is also provided with a slag prevention mechanism (10), the slag prevention mechanism (10) comprises a rotating shaft (101), and the inside of the device shell (81) is provided with a movable groove (103) matched with the rotating shaft (101), the side of the rotating shaft (101) is fixedly connected with a wind ring (102), and the end of the device shell (81) close to the rotating groove (84) is also provided with a communication port (104).

4. The anti-clogging structure for a steelmaking lance according to claim 1, characterized in that: The auxiliary gas cylinder (4) is communicated with the gun body (1) through the communication pipe (7), the adjusting knob (5) is used for adjusting the flow of gas delivered from the auxiliary gas cylinder (4) to the gun body (1), the switch (2) is installed on the gun body (1) and is used for controlling the delivery of gas or material in the gun body (1), and the spray head (6) is installed at one end of the gun body (1), and a plurality of spray holes are arranged on the spray head (6).

5. A clog-resistant structure for a steelmaking lance according to claim 3, characterized in that: The wind ring (102) is provided with equidistant wind blades, and the rotating shaft (101) and the opposite side wall of the device shell (81) are movably connected with a ball bearing for reducing friction.

6. A clog-resistant structure for a steelmaking lance according to claim 1, characterized in that: The four rotating plates (94) are rotatably connected between the device base (91) and the fixed plate (92), and the ends of the four rotating plates (94) are arc-shaped circular plates.

7. The anti-clogging structure for a steelmaking lance according to claim 1, characterized in that: The wind wheel (85) and the gear (86) are fixedly connected with a limiting rod (87), and one of the rotating grooves (84) is fixedly connected with a limiting ring (88) matched with the limiting rod (87).

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