Butt joint replacement device for blast furnace coal injection gun hose

Abstract

The utility model relates to the technical field of blast furnace coal injection guns, and provides a blast furnace coal injection gun hose butt joint replacement device which comprises a connecting pipe and a hose, and the connecting pipe comprises the hose, a coal injection gun pipe, a connecting structure and a protective structure. The connecting structure is arranged, the first connector and the second connector at the two ends of the hose are screwed into the connecting pipe and the internal threads in the coal injection gun barrel through the external threads respectively, then the two ends of the hose are in threaded connection with the interior of the connecting pipe and the interior of the hose respectively, and operation is convenient; meanwhile, a hinge rod moves in a hinge seat, then a sleeve is rotated to pull a clamping rod to drive a movable rod to enable a sliding block to slide in a sliding groove, then a telescopic spring is stretched, the clamping rod is clamped into a clamping groove to be fixed, and then the stability of threaded connection is improved; therefore, the sealing performance of hose connection is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace coal injection guns, in particular to a blast furnace coal injection gun hose docking and replacement device. Background Art

[0002] The blast furnace coal injection gun is a key device in the blast furnace coal injection system, which is mainly used to directly inject coal powder into the blast furnace to replace part of the coke, improve the smelting efficiency, and reduce the production cost. A blast furnace coal injection gun hose docking and replacement device is a device used for quickly replacing and docking the blast furnace coal injection gun hose, aiming to improve the replacement efficiency and reduce the downtime;

[0003] Most of the existing blast furnace coal injection gun hose docking and replacement devices are used by threading the connectors at both ends of the hose to the connecting pipe. After repeated use, the threads often become loose, which makes the connection between the hose and the connecting pipe loose and easily causes gas leakage. Utility Model Content

[0004] The utility model aims to provide a blast furnace coal injection gun hose docking replacement device to solve the defect of the existing blast furnace coal injection gun hose docking replacement device that the docking is not firm.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a blast furnace coal injection gun hose docking replacement device, comprising a connecting pipe and a hose;

[0006] The connecting pipe comprises a hose, a coal injection gun barrel, a connecting structure and a protective structure, wherein the hose is arranged at one end of the connecting pipe, and the coal injection gun barrel is arranged at one end of the hose;

[0007] The connecting pipes at both ends of the hose and the interior of the hose are provided with a connecting structure;

[0008] A protective structure is arranged inside the connecting pipe and the hose.

[0009] Preferably, the connecting structure includes a first connecting head, a second connecting head, an external thread, an internal thread, an articulated seat, an articulated rod, a sleeve, a movable rod, a slide groove, a slider, a telescopic spring, a clamping rod and a clamping groove, the first connecting head being fixed to one end of the hose, and the other end of the hose being fixed with the second connecting head, the outer sides of the first connecting head and the second connecting head are both provided with external threads, the interiors of the connecting pipe and the hose are both provided with internal threads, the outer sides of the first connecting head and the second connecting head are fixed with an articulated seat, the interior of the articulated seat is provided with an articulated rod, one end of the articulated rod is fixed with a sleeve, the interior of the sleeve is provided with a movable rod, the outer side of the movable rod inside the first connecting head is provided with a slide groove, a slider is fixed to one end of the movable rod inside the slide groove, a telescopic spring is provided at one end of the slider inside the sleeve, a clamping rod is fixed to one end of the movable rod, and a clamping groove is provided on the outer sides of the clamping rod inside the connecting pipe and the hose.

[0010] Preferably, the first connector is threadedly connected to the connecting pipe via external threads and internal threads, the second connector is threadedly connected to the hose via external threads and internal threads, and the first connector and the second connector are connected to the interior of the hose.

[0011] Preferably, the articulated seats are provided with four groups, and the articulated seats are distributed at equal intervals on the outside of the first connecting head and the second connecting head. One end of the articulated rod is hingedly connected to the inside of the articulated seat, and the movable rod and the sleeve form a telescopic structure through a telescopic spring. The clamping rod is arranged in a hook shape, and one end of the clamping rod forms a clamping structure with the inside of the clamping slot.

[0012] Preferably, the protective structure includes a fixed valve core, a first check plate, a movable valve core, a second check plate, a limit groove, a guide rod and a limit block, the fixed valve core is respectively fixed to the inside of the connecting pipe and the coal injection gun barrel, the first check plate is fixed to one side of the top of the fixed valve core, the movable valve core is arranged at the top of the fixed valve core inside the connecting pipe and the coal injection gun barrel, the second check plate is fixed to one side of the bottom end of the movable valve core, the limit groove is arranged at the top of the movable valve core inside the connecting pipe and the hose, the guide rod is fixed to the inside of the limit groove, and the limit block is arranged on the outside of the guide rod.

[0013] Preferably, the fixed valve core and the movable valve core are both arranged in a semicircular shape, the top end of the first check plate conflicts with one side of the bottom end of the movable valve core, the bottom end of the second check plate conflicts with one side of the top end of the fixed valve core, and the first check plate fits with the movable valve core.

[0014] Preferably, the fixed valve core and the movable valve core form a sealing structure through the first check plate and the second check plate, the bottom end of the limit block is fixedly connected to the top end of the movable valve core, a sliding hole is provided inside the limit block, and the limit block is slidably connected to the guide rod.

[0015] The utility model provides a blast furnace coal injection gun hose docking and replacement device, which has the advantages of:

[0016] By providing a connection structure, the first connector and the second connector at both ends of the hose are respectively screwed into the internal threads of the connecting pipe and the coal injection gun pipe through external threads, so that the two ends of the hose are respectively threadedly connected with the connecting pipe and the inside of the hose, which is convenient to operate, thereby facilitating the rapid docking and replacement of the hose. At the same time, the hinged rod moves inside the hinged seat, and then the sleeve is rotated to pull the clamping rod to drive the movable rod to make the slider slide inside the slide groove, so that the telescopic spring is stretched, so that the clamping rod is clamped into the inside of the clamping groove for fixing, thereby improving the stability of the threaded connection, thereby enhancing the sealing of the hose connection;

[0017] By providing a protective structure, when the sprayed airflow is blown from the inside of the connecting pipe into the inside of the hose, the movable valve core is driven to slide on the outside of the guide rod through the limit block, thereby separating the first check plate from the second check plate, and the gas is then blown into the inside of the hose from the channel between the first check plate and the movable valve core. When the gas refluxes, the movable valve core is driven to move, so that the second check plate fits with the first check plate, thereby effectively preventing the sprayed airflow from flowing back. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0020] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 For the utility model Figure 2 The enlarged structural diagram at B in the middle;

[0022] Figure 5 It is a schematic diagram of the three-dimensional explosion structure of the utility model;

[0023] Explanation of the reference numerals in the figure: 1. connecting pipe; 101. hose; 102. coal injection gun barrel; 103. connecting structure; 1031. first connecting head; 1032. second connecting head; 1033. external thread; 1034. internal thread; 1035. hinged seat; 1036. hinged rod; 1037. sleeve; 1038. movable rod; 1039. slide groove; 10310. slider; 10311. telescopic spring; 10312. clamping rod; 10313. clamping groove; 104. protective structure; 1041. fixed valve core; 1042. first check plate; 1043. movable valve core; 1044. second check plate; 1045. limit groove; 1046. guide rod; 1047. limit block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 The utility model provides a blast furnace coal injection gun hose docking and replacement device, comprising a connecting pipe 1 and a hose 101.

[0026] Reference Figure 1-Figure 3 and Figure 5As shown, the connecting pipe 1 includes a hose 101, a coal spray gun barrel 102, a connecting structure 103 and a protective structure 104. The hose 101 is arranged at one end of the connecting pipe 1, and the coal spray gun barrel 102 is arranged at one end of the hose 101. The connecting pipe 1 at both ends of the hose 101 and the interior of the hose 101 are provided with a connecting structure 103. The connecting structure 103 includes a first connector 1031, a second connector 1032, an external thread 1033, an internal thread 1034, a hinge seat 1035, a hinge rod 1036, a sleeve 1037, a movable rod 1038, a slide groove 1039, a slider 10310, and a telescopic spring 10311 , a clamping rod 10312 and a clamping groove 10313, a first connector 1031 is fixed to one end of the hose 101, a second connector 1032 is fixed to the other end of the hose 101, external threads 1033 are arranged on the outside of the first connector 1031 and the second connector 1032, internal threads 1034 are arranged on the inside of the connecting pipe 1 and the hose 101, an articulated seat 1035 is fixed on the outside of the first connector 1031 and the second connector 1032, an articulated rod 1036 is arranged on the inside of the articulated seat 1035, a sleeve 1037 is fixed to one end of the articulated rod 1036, and a movable sleeve 1037 is arranged on the inside of the sleeve 1037 The movable rod 1038 is provided with a slide groove 1039 on the outer side of the movable rod 1038 in the first connector 1031, a slider 10310 is fixed to one end of the movable rod 1038 in the slide groove 1039, a telescopic spring 10311 is provided on one end of the slider 10310 in the sleeve 1037, a clamping rod 10312 is fixed to one end of the movable rod 1038, a clamping groove 10313 is provided on the outer side of the clamping rod 10312 in the connecting pipe 1 and the hose 101, the first connector 1031 is threadedly connected to the connecting pipe 1 through an external thread 1033 and an internal thread 1034, and the second connector 1032 is threadedly connected to the hose 101 A threaded connection is formed by an external thread 1033 and an internal thread 1034, and the first connector 1031 and the second connector 1032 are connected to the interior of the hose 101. Four groups of articulated seats 1035 are arranged, and the articulated seats 1035 are evenly distributed on the outsides of the first connector 1031 and the second connector 1032. One end of the articulated rod 1036 is hingedly connected to the interior of the articulated seat 1035. The movable rod 1038 and the sleeve 1037 form a telescopic structure through the telescopic spring 10311. The clamping rod 10312 is arranged in a hook shape, and one end of the clamping rod 10312 forms a clamping structure with the interior of the clamping slot 10313.

[0027] By screwing the first connector 1031 and the second connector 1032 at both ends of the hose 101 into the internal threads 1034 of the connecting pipe 1 and the coal injection gun barrel 102 through the external threads 1033, the two ends of the hose 101 are respectively threadedly connected with the connecting pipe 1 and the inside of the hose 101, which is easy to operate, thereby facilitating the rapid docking and replacement of the hose 101. At the same time, the hinge rod 1036 moves inside the hinge seat 1035, and then the sleeve 1037 is rotated to pull the clamping rod 10312 to drive the movable rod 1038 to make the slider 10310 slide inside the slide groove 1039, so that the telescopic spring 10311 is stretched, and the clamping rod 10312 is clamped into the inside of the clamping groove 10313 for fixation, thereby improving the stability of the threaded connection, thereby strengthening the sealing of the hose 101 connection.

[0028] Reference Figure 2 and Figure 4 As shown, a protective structure 104 is provided inside the connecting pipe 1 and the hose 101, and the protective structure 104 includes a fixed valve core 1041, a first check plate 1042, a movable valve core 1043, a second check plate 1044, a limiting groove 1045, a guide rod 1046 and a limiting block 1047. The fixed valve core 1041 is fixed to the inside of the connecting pipe 1 and the coal injection gun barrel 102 respectively, and the first check plate 1042 is fixed to one side of the top of the fixed valve core 1041, and the movable valve core 1043 is provided at the top of the fixed valve core 1041 in the connecting pipe 1 and the coal injection gun barrel 102, and the second check plate 1044 is fixed to one side of the bottom of the movable valve core 1043, and the limiting groove 1045 is provided at the top of the movable valve core 1043 in the connecting pipe 1 and the hose 101. A guide rod 1046 is fixed inside 045, and a limit block 1047 is arranged on the outside of the guide rod 1046. The fixed valve core 1041 and the movable valve core 1043 are both arranged in a semicircular shape. The top of the first check plate 1042 conflicts with one side of the bottom end of the movable valve core 1043, and the bottom end of the second check plate 1044 conflicts with one side of the top of the fixed valve core 1041. The first check plate 1042 fits with the movable valve core 1043, and the fixed valve core 1041 and the movable valve core 1043 form a sealing structure through the first check plate 1042 and the second check plate 1044. The bottom end of the limit block 1047 is fixedly connected to the top end of the movable valve core 1043, and a sliding hole is arranged inside the limit block 1047. The limit block 1047 forms a sliding connection with the guide rod 1046.

[0029] When the sprayed air flow is blown from the inside of the connecting pipe 1 into the inside of the hose 101, it drives the movable valve core 1043 to slide on the outside of the guide rod 1046 through the limit block 1047, thereby separating the first check plate 1042 from the second check plate 1044, and the gas is then blown into the inside of the hose 101 from the channel between the first check plate 1042 and the movable valve core 1043. When the gas refluxes, it drives the movable valve core 1043 to move, so that the second check plate 1044 fits with the first check plate 1042, thereby effectively preventing the sprayed air flow from flowing back.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A blast furnace coal injection gun hose docking and replacement device, comprising a connecting pipe (1) and a hose (101); Features: The connecting pipe (1) comprises a hose (101), a coal injection gun barrel (102), a connecting structure (103) and a protective structure (104); the hose (101) is arranged at one end of the connecting pipe (1), and the coal injection gun barrel (102) is arranged at one end of the hose (101); The connecting pipes (1) at both ends of the hose (101) and the interior of the hose (101) are provided with connecting structures (103); A protective structure (104) is provided inside the connecting pipe (1) and the hose (101).

2. A blast furnace coal injection gun hose docking and replacement device according to claim 1, characterized in that: The connection structure (103) comprises a first connection head (1031), a second connection head (1032), an external thread (1033), an internal thread (1034), an articulated seat (1035), an articulated rod (1036), a sleeve (1037), a movable rod (1038), a slide groove (1039), a slider (10310), a telescopic spring (10311), a clamping rod (10312) and a clamping groove (10313); the first connection head (1031) is fixed to one end of the hose (101); the second connection head (1032) is fixed to the other end of the hose (101); the outer sides of the first connection head (1031) and the second connection head (1032) are both provided with external threads (1033); the inner sides of the connection pipe (1) and the hose (101) are both provided with internal threads (1034); the first connection head (1031) An articulated seat (1035) is fixed to the outside of the second connecting head (1032); an articulated rod (1036) is arranged inside the articulated seat (1035); a sleeve (1037) is fixed to one end of the articulated rod (1036); a movable rod (1038) is arranged inside the sleeve (1037); a sliding groove (1039) is arranged on the outside of the movable rod (1038) inside the first connecting head (1031); a slider (10310) is fixed to one end of the movable rod (1038) inside the sliding groove (1039); a telescopic spring (10311) is arranged at one end of the slider (10310) inside the sleeve (1037); a clamping rod (10312) is fixed to one end of the movable rod (1038); and a clamping groove (10313) is arranged on the outside of the clamping rod (10312) inside the connecting pipe (1) and the hose (101).

3. A blast furnace coal injection gun hose docking and replacement device according to claim 2, characterized in that: The first connector (1031) and the connecting pipe (1) are threadedly connected via an external thread (1033) and an internal thread (1034); the second connector (1032) and the hose (101) are threadedly connected via an external thread (1033) and an internal thread (1034); the first connector (1031) and the second connector (1032) are in communication with the interior of the hose (101).

4. A blast furnace coal injection gun hose docking and replacement device according to claim 2, characterized in that: The hinged seat (1035) is provided with four groups. The hinged seats (1035) are distributed at equal intervals on the outside of the first connecting head (1031) and the second connecting head (1032). One end of the hinged rod (1036) is hingedly connected to the inside of the hinged seat (1035). The movable rod (1038) and the sleeve (1037) form a telescopic structure through a telescopic spring (10311). The clamping rod (10312) is provided in a hook shape. One end of the clamping rod (10312) forms a clamping structure with the inside of the clamping slot (10313).

5. The blast furnace coal injection gun hose docking and replacement device according to claim 1, characterized in that: The protective structure (104) comprises a fixed valve core (1041), a first check plate (1042), a movable valve core (1043), a second check plate (1044), a limit groove (1045), a guide rod (1046) and a limit block (1047); the fixed valve core (1041) is respectively fixed to the inside of the connecting pipe (1) and the coal injection gun barrel (102); the first check plate (1042) is fixed to one side of the top end of the fixed valve core (1041); the connecting pipe (1) and A movable valve core (1043) is arranged at the top end of a fixed valve core (1041) inside the coal injection gun tube (102), a second check plate (1044) is fixed to one side of the bottom end of the movable valve core (1043), a limiting groove (1045) is arranged at the top end of the movable valve core (1043) inside the connecting pipe (1) and the hose (101), a guide rod (1046) is fixed inside the limiting groove (1045), and a limiting block (1047) is arranged on the outside of the guide rod (1046).

6. A blast furnace coal injection gun hose docking and replacement device according to claim 5, characterized in that: The fixed valve core (1041) and the movable valve core (1043) are both arranged in a semicircular shape, the top end of the first check plate (1042) abuts against one side of the bottom end of the movable valve core (1043), the bottom end of the second check plate (1044) abuts against one side of the top end of the fixed valve core (1041), and the first check plate (1042) fits with the movable valve core (1043).

7. The device for connecting and replacing hoses of blast furnace coal injection guns according to claim 5, characterized in that: The fixed valve core (1041) and the movable valve core (1043) form a sealing structure via a first check plate (1042) and a second check plate (1044); the bottom end of the limit block (1047) is fixedly connected to the top end of the movable valve core (1043); a sliding hole is provided inside the limit block (1047); and the limit block (1047) and the guide rod (1046) form a sliding connection.

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