Quick connecting device for oxygen burning of blast furnace

Abstract

The utility model discloses a quick connecting device for oxygen burning of a blast furnace, which belongs to the technical field of connecting devices and comprises a quick connector and an iron wire. The quick connector comprises a first round pipe, a second round pipe and a third round pipe which are coaxially arranged. One end of the first circular tube is an oxygen tube insertion end, the other end of the first circular tube is sleeved outside one end of the second circular tube, and the other end of the second circular tube is a rubber tube sleeving end. The third circular tube is positioned in the first circular tube, one end of the third circular tube is inserted into the second circular tube, and the other end is an oxygen tube sleeving end. A locking screw rod for locking the oxygen tube is arranged on the outer side of the first circular tube, and a connecting ring detachably connected with an iron wire is arranged on the second circular tube. The oxygen-burning quick connector has the advantages of simple structure, good rubber tube anti-falling effect, convenience in assembly and disassembly and the like, and solves the problems of relatively complicated structure and / or poor anti-falling effect of the conventional oxygen-burning quick connector.

Description

TECHNICAL FIELD

[0001] The utility model relates to connecting device technical field, especially relate to a blast furnace burns oxygen quick connecting device. BACKGROUND

[0002] Blast furnace front burns oxygen is a basic skill, and application scene is more, such as replacing tuyere lower part slag iron when tuyere, drill pipe is stuck and does not return when tapping, etc., these all need to burn oxygen operation.

[0003] Traditional oxygen pipe and rubber tube connecting mode all adopt direct insertion type, and rely on the friction between rubber tube and oxygen pipe to seal, if the front end of oxygen pipe appears to be blocked or oxygen pressure is too large, the rubber tube that is sleeved in the tail end of oxygen pipe often appears to be loose, not only influence the speed of burning oxygen, but also can cause burning oxygen backfire, burn the hands of operator, bring greater safety risk.

[0004] Some existing technologies also propose some burning oxygen quick connectors for quickly connecting oxygen pipe and rubber tube, but most of them have the problems of relatively complex structure and / or poor anti-loosening effect. For example, Chinese patent CN 221097796 U proposes a kind of iron mouth oxygen pipe quick connector device, and the tail end rubber tube has good anti-loosening effect, but the overall structure is relatively complex.Chinese patent CN210030759U proposes a kind of portable blast furnace burns oxygen connector, and the tail end rubber tube has poor anti-loosening effect, and the overall structure is relatively complex.Therefore, it is necessary to improve the prior art, and propose a kind of blast furnace burns oxygen quick connecting device with simple structure and good anti-loosening effect of tail end rubber tube. UTILITY MODEL CONTENT

[0005] The utility model proposes a kind of blast furnace burns oxygen quick connecting device to solve the problems of relatively complex structure and / or poor anti-loosening effect of existing burning oxygen quick connector.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0007] The utility model provides a kind of blast furnace burns oxygen quick connecting device, including quick coupling and iron wire;The quick coupling includes coaxially arranged first circular tube, second circular tube and third circular tube;The one end of the first circular tube is oxygen pipe insertion end, and the other end is sleeved in the outside of one end of the second circular tube, and the other end of the second circular tube is rubber tube sleeve end;The third circular tube is located in the first circular tube, and one end is inserted in the second circular tube, and the other end is oxygen pipe sleeve end, and the outer diameter of the third circular tube matches the inner diameter of oxygen pipe;The connecting place of the first circular tube and the second circular tube and the connecting place of the second circular tube and the third circular tube are all sealing structure;Fixed nut is fixed on the outside of the first circular tube, and the threaded hole of the fixed nut is communicated with the inner cavity of the first circular tube, and locking screw for locking oxygen pipe is connected in the threaded hole;The outside of the one end of the second circular tube close to the first circular tube is provided with connecting ring for being detachably connected with the iron wire.

[0008] Further, the first circular tube and the third circular tube are both welded with the second circular tube.

[0009] Further, the third circular tube is located between the locking screw and the second circular tube.

[0010] Further, the length of the first circular tube is 15-20cm.

[0011] Further, the exposed length of the second circular tube is 15-20cm.

[0012] Further, the length of the third circular tube outside the second circular tube is 3-5cm.

[0013] Further, the coincident length of the first circular tube and the second circular tube is 6-8cm.

[0014] Further, the locking screw is provided with rotating handle.

[0015] Further, the connecting ring is welded with the second circular tube.

[0016] Further, the connecting ring is hexagonal nut.

[0017] Due to the adoption of the above technical scheme, the utility model has the following beneficial effects:

[0018] 1. The utility model has the advantages of simple structure and convenient disassembly, wherein the quick coupling includes coaxially arranged first circular tube, second circular tube and third circular tube, the first circular tube and the third circular tube are connected with oxygen pipe, the second circular tube is connected with rubber tube, and the quick connection between oxygen pipe and rubber tube can be realized. During installation, oxygen pipe insertion operation and rubber tube sleeve operation are relatively convenient, which brings better experience to oxygen burning personnel. In addition, the setting of the third circular tube is conducive to improving the sealing property and stability of the quick coupling and oxygen pipe connection.

[0019] 2. The utility model discloses a good anti -drop effect, the quick -coupling is provided with locking screw and connecting ring, when the quick -coupling both ends respectively with oxygen pipe and rubber pipe connect good after, through the rotation handle drive locking screw and press tightly oxygen pipe, prevent the quick -coupling from the oxygen pipe, through the iron wire and tightly bind in the second pipe on the rubber pipe, and after winding many rounds, bind and connect on the connecting ring, prevent the rubber pipe from the quick -coupling, and further prevent the oxygen tempering, avoid the occurrence of safety accident, realize the production operation of efficient, safe oxygen burning.

[0020] 3. The utility model discloses can ensure the stability of the connection between oxygen pipe and rubber pipe, be favorable for promoting oxygen burning efficiency, complete oxygen burning operation quickly, reduce labor intensity. ACCURACY

[0021] Figure 1 The structure diagram of the blast furnace oxygen burning quick connecting device for the utility model embodiment 1 is provided;

[0022] Figure 2 The internal structure diagram of the quick -coupling for the utility model embodiment 1 is provided;

[0023] Figure 3 The connection diagram of the quick -coupling and oxygen pipe and rubber pipe for the utility model embodiment 1 is provided;

[0024] Figure 4 The use diagram of the iron wire for the utility model embodiment 1 is provided;

[0025] Among them, the figure is marked as: 1-first pipe, 2-second pipe, 3-third pipe, 4-fixed nut, 5-locking screw, 6-rotary handle, 7-connecting ring, 8-iron wire, 9-oxygen pipe, 10-rubber pipe. SPECIFIC IMPLEMENTATION

[0026] The technical scheme in the utility model embodiment will be described clearly and completely in conjunction with the drawings in the utility model embodiment, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor are within the scope of the utility model protection.

[0027] Embodiment 1

[0028] As Figures 1-4 Shown, a kind of blast furnace oxygen burning quick connecting device, including quick -coupling and iron wire 8. Among them, quick -coupling includes coaxially arranged first pipe 1, second pipe 2 and third pipe 3. First pipe 1, second pipe 2 and third pipe 3 are all steel pipes.

[0029] One end of the first circular pipe 1 is an oxygen pipe insertion end, the other end is sleeved outside one end of the second circular pipe 2, the other end of the second circular pipe 2 is a rubber pipe sleeving end. The third circular pipe 3 is located in the first circular pipe 1, one end of the third circular pipe 3 is inserted into the second circular pipe 2, the other end is an oxygen pipe sleeving end, the outer diameter of the third circular pipe 3 matches the inner diameter of the oxygen pipe 9. The third circular pipe 3 is arranged, which is beneficial to improve the sealing and stability of the quick connector connected with the oxygen pipe 9. The connection between the first circular pipe 1 and the second circular pipe 2 and the connection between the second circular pipe 2 and the third circular pipe 3 are both sealed structures. In the embodiment, the first circular pipe 1 and the third circular pipe 3 are both welded with the second circular pipe 2.

[0030] In the embodiment, the length of the first circular pipe 1 is 18cm, the exposed length of the second circular pipe 2 is 18cm, the length of the third circular pipe 3 outside the second circular pipe 2 is 4cm, and the overlapping length of the first circular pipe 1 and the second circular pipe 2 is 7cm. The inner diameter of the first circular pipe 1 is 2.2cm, the inner diameter of the second circular pipe 2 is 1.5cm, and the inner diameter of the third circular pipe 3 is 1.0cm, and the outer diameter is 1.3cm.

[0031] The outer side of the first circular pipe 1 is fixedly provided with a fixed nut 4, the threaded hole of the fixed nut 4 is communicated with the inner cavity of the first circular pipe 1, the threaded hole is threadedly connected with a locking screw 5 for locking the oxygen pipe 9, and the locking screw 5 is provided with a rotating handle 6. The third circular pipe 3 is located between the locking screw 5 and the second circular pipe 2.

[0032] The outer side of the second circular pipe 2 close to one end of the first circular pipe 1 is provided with a connecting ring 7 for detachable connection with the iron wire 8. In the embodiment, the connecting ring 7 is welded with the second circular pipe 2, and the connecting ring 7 is a hexagonal nut. The hexagonal nut has a plurality of planes, which is convenient for welding, and has a plurality of edges, which can limit the iron wire 8 wound on the edge.

[0033] The manufacturing method of the quick connector is as follows: first, one end of the third circular pipe 3 is inserted into one end of the second circular pipe 2 and welded and sealed; then, the third circular pipe 3 is completely inserted into the first circular pipe 1, so that one end of the first circular pipe 1 is sleeved outside one end of the second circular pipe 2, and is welded and sealed; then, the fixed nut 4 is welded and fixed on the hole of the first circular pipe 1, and the locking screw 5 is installed; finally, the connecting ring 7 is welded on the third circular pipe 3, so that the quick connector can be manufactured, which has the advantages of simple structure and convenient manufacturing.

[0034] The utility model discloses a simple structure and the advantage that dismounting is convenient can realize the quick connection between oxygen pipe 9 and rubber pipe 10.

[0035] The utility model discloses have good anti -drop effect, prevent the oxygen annealing in turn, avoid the occurrence of safety accident, realize efficient, safe oxygen burning production operation. The utility model discloses can ensure the stability of the connection between oxygen pipe 9 and rubber pipe 10, be favorable to the promotion oxygen burning efficiency, complete oxygen burning operation fast, reduce the labor intensity.

[0036] The above description is for the detailed description of the preferred embodiment of the utility model, but the embodiment is not used to limit the patent application range of the utility model, and any equivalent change or modification change under the technical spirit of the utility model should belong to the patent range covered by the utility model.

Claims

1. A rapid connection device for oxygen combustion in a blast furnace, characterized in that: The device includes a quick connector and a wire. The quick connector comprises a first round tube, a second round tube, and a third round tube arranged coaxially. One end of the first round tube is an oxygen tube insertion end, and the other end is sleeved on the outside of one end of the second round tube. The other end of the second round tube is a rubber hose sleeve end. The third round tube is located inside the first round tube, with one end inserted into the second round tube and the other end serving as the oxygen tube sleeve end. The outer diameter of the third round tube matches the inner diameter of the oxygen tube. The connection between the first and second round tubes and the connection between the second and third round tubes are both sealed structures. A fixing nut is fixedly installed on the outside of the first round tube. The threaded hole of the fixing nut communicates with the inner cavity of the first round tube, and a locking screw for locking the oxygen tube is threaded into the threaded hole. A connecting ring for detachable connection with the wire is provided on the outside of the second round tube near one end of the first round tube.

2. The rapid connection device for oxygen combustion in a blast furnace according to claim 1, characterized in that: Both the first and third circular tubes are welded to the second circular tube.

3. The rapid connection device for oxygen combustion in a blast furnace according to claim 1, characterized in that: The third round tube is located between the locking screw and the second round tube.

4. The rapid connection device for oxygen combustion in a blast furnace according to claim 1, characterized in that: The length of the first circular tube is 15-20cm.

5. The rapid connection device for oxygen combustion in a blast furnace according to claim 1, characterized in that: The exposed length of the second round tube is 15-20cm.

6. The rapid connection device for oxygen combustion in a blast furnace according to claim 1, characterized in that: The length of the third circular tube located outside the second circular tube is 3-5 cm.

7. The rapid connection device for oxygen combustion in a blast furnace according to claim 1, characterized in that: The overlap length between the first and second circular tubes is 6-8 cm.

8. The rapid connection device for oxygen combustion in a blast furnace according to claim 1, characterized in that: The locking screw has a built-in rotating handle.

9. The rapid connection device for oxygen combustion in a blast furnace according to claim 1, characterized in that: The connecting ring is welded to the second circular tube.

10. A rapid connection device for oxygen combustion in a blast furnace according to claim 1, characterized in that: The connecting ring is a hexagonal nut.

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