Oxygen combustion gun for baking waste steel

Abstract

The utility model provides an oxygen combustion gun for waste steel baking, and relates to the technical field of waste steel baking. The branch gas pipe is fixedly connected to the outer surface of the main gas pipe and is used for conveying gas; the water inlet pipe sleeve is fixedly connected to the outer surface of the main gas pipe and is used for conveying cooling water; and the drain pipe sleeve is fixedly connected to the outer surface of the main gas pipe. According to the device, the supporting plate is conveniently pushed to rotate through the arranged pushing handle, the supporting plate drives the sliding ring to rotate in the supporting pipe, so that the position of the connecting hole can be adjusted, and when the pushing handle slides to the other side from one side, the connecting hole is formed in the supporting pipe to be communicated with the through hole in the process; and when the pushing handle slides to the other side, the connecting hole is not formed in the supporting pipe any more and is not communicated with the through hole any more, so that gas emission can be blocked, and the situation of backfire caused by gas backflow is prevented.

Description

Technical Field

[0001] This utility model relates to the field of scrap steel baking technology, specifically to an oxygen-fueled lance used for scrap steel baking. Background Technology

[0002] As the overall level of social production and consumption gradually improves, steel production continues to expand, consuming more natural resources, mainly iron ore and coke. At the same time, the elimination of equipment and the demolition of old buildings will lead to an increasing accumulation of scrap steel in society. In my country, the annual amount has reached 200 million tons. If it is not recycled in time, the accumulated amount of scrap steel will reach hundreds of millions of tons, putting enormous pressure on the environment.

[0003] The patent specification with publication number CN215112612U discloses an oxy-fuel lance with a rotating flame, belonging to the field of scrap steel heating technology. This oxy-fuel lance with a rotating flame includes a motor. An output shaft is fixedly connected to the output end of the motor. A first gear is fixedly connected to the outer surface of the output shaft. A second gear is meshed with the outer surface of the first gear. An oxygen pipe is fixedly connected to the inner wall of the second gear. A nozzle is threadedly connected to the bottom of the outer surface of the oxygen pipe. A straight nozzle is fixedly connected to the lower surface of the nozzle, and an angled nozzle is fixedly connected to one side of the lower surface of the nozzle. Turning on the motor causes the output shaft to drive the first gear to rotate, which in turn causes the second gear to drive the oxygen pipe to rotate, thus rotating the nozzle. Simultaneously, the straight and angled nozzles heat the steel, ensuring that the flame rotates within the heating container, resulting in uniform heating of the scrap steel, improving heating efficiency, and preventing oxidation of the scrap steel due to localized overheating.

[0004] While the aforementioned technical solutions ensure that the rotating flame within the heating container provides uniform heating of the scrap steel and improves heating efficiency, in practice, the only way to reduce the probability of backfire and explosion in the oxy-fuel lance is to assign dedicated personnel to closely monitor the oxygen pressure. There are no substantial solutions for preventing backfire and explosion, a problem that has long plagued those skilled in the art. Therefore, we propose an oxy-fuel lance for scrap steel baking. Utility Model Content

[0005] This invention provides an oxygen-fuel lance for baking scrap steel, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] Embodiments of this utility model provide an oxygen-fuel lance for scrap steel baking, comprising:

[0008] Main gas pipe;

[0009] Branch gas pipes are fixedly connected to the outer surface of the main gas pipe to transport gas.

[0010] The water inlet sleeve is fixedly connected to the outer surface of the main gas pipe to deliver cooling water.

[0011] The drain pipe sleeve is fixedly connected to the outer surface of the main gas pipe to discharge cooling water;

[0012] The connecting pipe is fixedly connected to one end of the main gas pipe to support the main oxygen pipe;

[0013] The main oxygen pipe is fixedly connected to one end of the connecting pipe to transport oxygen.

[0014] The oxygen tubing is fixedly connected to the outer surface of the connecting pipe to deliver oxygen.

[0015] The nozzle is fixedly installed at one end of the main oxygen pipe to spray the flame.

[0016] The mounting bracket is fixedly installed on the outer ring surface of the main oxygen pipe to support the main oxygen pipe;

[0017] Through holes are formed on the surface of the mounting bracket to allow for the discharge of gas.

[0018] A protective device is installed inside the main gas pipe to prevent backfire and explosion.

[0019] A pressure relief device is installed on the outer surface of the main gas pipe to prevent the internal pressure of the main gas pipe from rising and causing an explosion.

[0020] Furthermore, the protective device includes a support tube, which is fixedly installed on the surface of the fixed frame. A sliding ring is provided on the surface of the support tube, and a support plate is fixedly connected to the outer ring surface of the sliding ring. A pusher is fixedly connected to one end of the support plate, and a connection hole is provided on the surface of the sliding ring.

[0021] The above technical solution allows the pusher to easily rotate the support plate, causing the sliding ring to rotate inside the support tube. This allows adjustment of the position of the connection hole. When the pusher slides from one side to the other, the connection hole is initially positioned inside the support tube and connected to the through hole, facilitating the discharge of gas. When the pusher slides to the other side, the connection hole is no longer positioned inside the support tube and is no longer connected to the through hole, thus blocking the gas discharge and preventing backfire caused by gas backflow.

[0022] Furthermore, the main oxygen pipe is located inside the main gas pipe, and the fixing bracket is fixedly connected to the main gas pipe.

[0023] The above technical solution uses a fixed bracket to support the main oxygen pipe, making the connection between the main oxygen pipe and the main gas pipe more stable.

[0024] Furthermore, the support tube is connected to the through hole, and the outer ring surface of the support tube is provided with a rotating groove. The sliding ring is disposed inside the rotating groove and is rotatably installed with the support tube. The connecting hole matches the through hole.

[0025] The above technical solution uses a rotating groove on the outer ring of the support pipe to house the sliding ring, allowing it to rotate within the groove. This changes the position of the connecting hole on the surface of the sliding ring, ultimately controlling the emission of the gas and preventing backfire.

[0026] Furthermore, a sliding groove is provided on the outer circumference of the main gas pipe, and the support plate is disposed inside the sliding groove. The support plate is rotatably installed with the main gas pipe, and locking blocks are fixedly connected to both sides of the support plate. The locking blocks are locked and installed with the main gas pipe.

[0027] The above technical solution uses a sliding groove on the outer ring of the main gas pipe to house the support plate, allowing the support plate to rotate within the sliding groove. This rotation of the support plate then drives the sliding ring to rotate as well.

[0028] Furthermore, the pressure relief device includes a pressure relief pipe, which is fixedly installed on the outer ring surface of the main gas pipe. A pressure relief plate is fixedly installed inside the pressure relief pipe. A telescopic spring is fixedly connected to the center of the pressure relief plate. A telescopic rod is provided inside the telescopic spring. A conical top is fixedly connected to one end of the telescopic rod. A pressure relief hole is opened on the surface of the pressure relief plate. An exhaust pipe is fixedly connected to the outer ring surface of the main gas pipe.

[0029] With the above technical solution, when the gas discharge is blocked, the internal pressure of the main gas pipe will increase. Under the action of pressure, the gas will pass through the pressure relief pipe and pressure relief hole and impact the top of the cone. At this time, the top of the cone will move and separate from the port of the pressure relief pipe, so that the gas can be easily discharged. When the pressure is balanced, under the action of the extension spring, the top of the cone can be pulled back to its original position and contact the port of the pressure relief pipe. Ultimately, the rise of the main gas pipe can be prevented from causing a burst.

[0030] Furthermore, the other end of the telescopic rod is fixedly connected to the pressure relief plate, and one end of the telescopic spring is fixedly connected to the top of the cone.

[0031] By using the above technical solution, the stability of the telescopic spring's extension and retraction movement can be improved through the fixed connection between the telescopic rod and the pressure relief plate.

[0032] Furthermore, the pressure relief pipe and the conical top are both located inside the exhaust pipe, and the telescopic spring and the telescopic rod are both located inside the pressure relief pipe.

[0033] With the above technical solution, the pressure relief pipe and the conical top are both set inside the exhaust pipe. The exhaust pipe can be used to transport excess gas, avoiding the gas from being discharged into the external environment and reacting with the flame to cause safety accidents. At the same time, excess gas can be collected and reused.

[0034] The above-described solution of this utility model has at least the following beneficial effects:

[0035] 1. This utility model features a push handle that facilitates the rotation of a support plate. This allows the support plate to drive a sliding ring to rotate inside the support tube, thereby adjusting the position of the connecting hole. When the push handle slides from one side to the other, the connecting hole is initially positioned inside the support tube and connected to the through hole, facilitating the discharge of gas. When the push handle slides to the other side, the connecting hole is no longer positioned inside the support tube and is no longer connected to the through hole, thus blocking the gas discharge and preventing backfire caused by gas backflow.

[0036] 2. In this utility model, when the gas discharge is blocked, the internal pressure of the main gas pipe will increase. Under the action of pressure, the gas will pass through the pressure relief pipe and pressure relief hole and impact the top of the cone. At this time, the top of the cone will move and separate from the port of the pressure relief pipe, so as to facilitate the gas discharge. When the pressure is balanced, under the action of the extension spring, the top of the cone can be pulled back to its original position and contact the port of the pressure relief pipe. Ultimately, the rise of the main gas pipe can prevent the explosion. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0038] Figure 2 This is a utility model Figure 1 A sectional view;

[0039] Figure 3 This is an exploded view of the protective device of this utility model;

[0040] Figure 4 This is a utility model Figure 1 Another sectional view;

[0041] Figure 5 This is an enlarged view of part A of this utility model.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Main gas pipe; 2. Branch gas pipe; 3. Water inlet pipe sleeve; 4. Drainage pipe sleeve; 5. Connecting pipe; 6. Main oxygen pipe; 7. Branch oxygen pipe; 8. Nozzle; 9. Fixing bracket; 10. Through hole; 11. Protective device; 1101. Support pipe; 1102. Rotating groove; 1103. Sliding ring; 1104. Connecting hole; 1105. Support plate; 1106. Sliding groove; 1107. Push handle; 12. Locking block; 13. Pressure relief device; 1301. Pressure relief pipe; 1302. Pressure relief plate; 1303. Pressure relief hole; 1304. Telescopic rod; 1305. Telescopic spring; 1306. Conical top; 1307. Exhaust pipe. Detailed Implementation

[0044] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0045] like Figures 1 to 5 As shown, an embodiment of this utility model provides an oxy-fuel lance for scrap steel baking, comprising: a main gas pipe 1; a branch gas pipe 2, fixedly connected to the outer surface of the main gas pipe 1 for transporting gas; a water inlet sleeve 3, fixedly connected to the outer surface of the main gas pipe 1 for transporting cooling water; a drain sleeve 4, fixedly connected to the outer surface of the main gas pipe 1 for discharging cooling water; a connecting pipe 5, fixedly connected to one end of the main gas pipe 1 for supporting the main oxygen pipe 6; and the main oxygen pipe 6, fixedly connected to one end of the connecting pipe 5 for supplying oxygen. The system includes: a branch oxygen pipe 7, fixedly connected to the outer surface of the connecting pipe 5, for transporting oxygen; a nozzle 8, fixedly installed at one end of the main oxygen pipe 6, for spraying flames; a mounting bracket 9, fixedly installed on the outer ring surface of the main oxygen pipe 6, for supporting the main oxygen pipe 6; a through hole 10, opened on the surface of the mounting bracket 9, for venting gas; a protective device 11, installed inside the main gas pipe 1, for preventing backfire and explosion; and a pressure relief device 13, installed on the outer surface of the main gas pipe 1, for preventing explosion due to increased internal pressure.

[0046] like Figures 1 to 5As shown, the protective device 11 includes a support pipe 1101, which is fixedly installed on the surface of the mounting bracket 9. A sliding ring 1103 is provided on the surface of the support pipe 1101, and a support plate 1105 is fixedly connected to the outer ring surface of the sliding ring 1103. A pusher 1107 is fixedly connected to one end of the support plate 1105, and a connecting hole 1104 is provided on the surface of the sliding ring 1103. The main oxygen pipe 6 is located inside the main gas pipe 1, and the mounting bracket 9 is fixedly connected to the main gas pipe 1. The support pipe 1101 communicates with the through hole 10, and a rotating groove 1102 is provided on the outer ring surface of the support pipe 1101. The sliding ring 1103 is located inside the rotating groove 1102, and the sliding ring 1103 is rotatably installed with the support pipe 1101. The connecting hole 1104 matches the through hole 10. The sliding ring 1103 is housed in the rotating groove 1102 on the outer ring surface of the support pipe 1101, allowing the sliding ring 1103 to rotate within the groove. This changes the position of the connecting hole 1104 on the surface of the sliding ring 1103, ultimately controlling the gas emission and preventing backfire. The outer ring surface of the main gas pipe 1 has a sliding groove 1106, and a support plate 1105 is disposed inside the sliding groove 1106. The support plate 1105 is rotatably mounted to the main gas pipe 1, and locking blocks 12 are fixedly connected to both sides of the support plate 1105, engaging with the main gas pipe 1.

[0047] In this embodiment of the invention, when it is necessary to stop the operation of the oxygen combustion gun, the pusher 1107 is first used to push the support plate 1105 to rotate, so that the support plate 1105 drives the sliding ring 1103 to rotate inside the support tube 1101, thereby adjusting the position of the connecting hole 1104. When the pusher 1107 slides from one side to the other, the connecting hole 1104 is initially placed inside the support tube 1101 and connected to the through hole 10, which facilitates the discharge of gas. When the pusher 1107 slides to the other side, the connecting hole 1104 is no longer placed inside the support tube 1101 and is no longer connected to the through hole 10, thereby blocking the gas discharge and preventing backfire caused by gas backflow.

[0048] like Figures 1 to 5As shown, the pressure relief device 13 includes a pressure relief pipe 1301, which is fixedly installed on the outer ring surface of the main gas pipe 1. A pressure relief plate 1302 is fixedly installed inside the pressure relief pipe 1301. A telescopic spring 1305 is fixedly connected to the center of the pressure relief plate 1302. A telescopic rod 1304 is provided inside the telescopic spring 1305. A conical top 1306 is fixedly connected to one end of the telescopic rod 1304. A pressure relief hole 1303 is opened on the surface of the pressure relief plate 1302. An exhaust pipe 1307 is fixedly connected to the outer ring surface of the main gas pipe 1. The other end of the telescopic rod 1304 is fixedly connected to the pressure relief plate 1302, and one end of the telescopic spring 1305 is fixedly connected to the conical top 1306. The pressure relief pipe 1301 and the conical top 1306 are both located inside the exhaust pipe 1307, and the telescopic spring 1305 and the telescopic rod 1304 are both located inside the pressure relief pipe 1301. With the pressure relief pipe 1301 and the conical top 1306 both located inside the exhaust pipe 1307, excess fuel gas can be transported through the exhaust pipe 1307, preventing the fuel gas from being released into the external environment and reacting with the flame to cause a safety accident. At the same time, excess fuel gas can also be collected and reused.

[0049] In this embodiment of the invention, when the gas discharge is blocked, the internal pressure of the main gas pipe 1 will increase. Under the action of the pressure, the gas will pass through the pressure relief pipe 1301 and the pressure relief hole 1303 and impact the cone top 1306. At this time, the cone top 1306 will move and separate from the port of the pressure relief pipe 1301, so that the gas can be discharged easily. When the pressure is balanced, under the action of the extension spring 1305, the cone top 1306 can be pulled back to its original position and contact the port of the pressure relief pipe 1301. In the end, the rise of the main gas pipe 1 can be avoided, which may lead to the explosion.

[0050] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An oxy-fuel lance for baking scrap steel, characterized in that, include: Main gas pipe (1); Branch gas pipe (2) is fixedly connected to the outer surface of main gas pipe (1) to realize the transportation of gas; The water inlet sleeve (3) is fixedly connected to the outer surface of the main gas pipe (1) to transport cooling water; The drain pipe sleeve (4) is fixedly connected to the outer surface of the main gas pipe (1) to discharge cooling water; The connecting pipe (5) is fixedly connected to one end of the main gas pipe (1) to support the main oxygen pipe (6); The main oxygen pipe (6) is fixedly connected to one end of the connecting pipe (5) to transport oxygen; The oxygen supply tube (7) is fixedly connected to the outer surface of the connecting tube (5) to deliver oxygen; The nozzle (8) is fixedly installed at one end of the main oxygen pipe (6) to spray the flame; The fixing bracket (9) is fixedly installed on the outer ring surface of the main oxygen pipe (6) to support the main oxygen pipe (6); A through hole (10) is provided on the surface of the mounting bracket (9) to allow the gas to be discharged. A protective device (11) is installed inside the main gas pipe (1) to prevent backfire and explosion. A pressure relief device (13) is installed on the outer surface of the main gas pipe (1) to prevent the internal pressure of the main gas pipe (1) from rising and causing an explosion.

2. The oxy-fuel lance for scrap steel baking according to claim 1, characterized in that, The protective device (11) includes a support tube (1101), which is fixedly installed on the surface of the fixing frame (9). A sliding ring (1103) is provided on the surface of the support tube (1101). A support plate (1105) is fixedly connected to the outer ring surface of the sliding ring (1103). A pusher (1107) is fixedly connected to one end of the support plate (1105). A connection hole (1104) is opened on the surface of the sliding ring (1103).

3. The oxy-fuel lance for scrap steel baking according to claim 1, characterized in that, The main oxygen pipe (6) is located inside the main gas pipe (1), and the fixing bracket (9) is fixedly connected to the main gas pipe (1).

4. The oxy-fuel lance for scrap steel baking according to claim 2, characterized in that, The support tube (1101) is connected to the through hole (10), and the outer ring surface of the support tube (1101) is provided with a rotating groove (1102). The sliding ring (1103) is disposed inside the rotating groove (1102), and the sliding ring (1103) is rotatably installed with the support tube (1101). The connecting hole (1104) matches the through hole (10).

5. The oxy-fuel lance for scrap steel baking according to claim 2, characterized in that, The outer ring surface of the main gas pipe (1) is provided with a sliding groove (1106), the support plate (1105) is disposed inside the sliding groove (1106), and the support plate (1105) is rotatably installed with the main gas pipe (1). Both sides of the support plate (1105) are fixedly connected with locking blocks (12), and the locking blocks (12) are locked and installed with the main gas pipe (1).

6. The oxy-fuel lance for scrap steel baking according to claim 1, characterized in that, The pressure relief device (13) includes a pressure relief pipe (1301), which is fixedly installed on the outer ring surface of the main gas pipe (1). A pressure relief plate (1302) is fixedly installed inside the pressure relief pipe (1301). A telescopic spring (1305) is fixedly connected to the center of the pressure relief plate (1302). A telescopic rod (1304) is provided inside the telescopic spring (1305). A conical top (1306) is fixedly connected to one end of the telescopic rod (1304). A pressure relief hole (1303) is opened on the surface of the pressure relief plate (1302). An exhaust pipe (1307) is fixedly connected to the outer ring surface of the main gas pipe (1).

7. The oxy-fuel lance for scrap steel baking according to claim 6, characterized in that, The other end of the telescopic rod (1304) is fixedly connected to the pressure relief plate (1302), and one end of the telescopic spring (1305) is fixedly connected to the cone top (1306).

8. The oxy-fuel lance for scrap steel baking according to claim 6, characterized in that, The pressure relief pipe (1301) and the conical top (1306) are both located inside the exhaust pipe (1307), and the telescopic spring (1305) and the telescopic rod (1304) are both located inside the pressure relief pipe (1301).

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