Grouting anchor gun

Abstract

This utility model relates to the technical field of cooling wall repair equipment, and in particular to a grouting anchor gun, which includes a grouting pipe inserted into the furnace shell and cooling wall. A grouting hole is provided on the peripheral wall of one end of the grouting pipe inside the blast furnace, and a grouting device is installed at the other end of the grouting pipe. An inner tube is inserted inside the grouting pipe, the length of which is greater than the length of the grouting pipe. The portion of the inner tube extending beyond the grouting pipe is designated as an extension, and a material hanging structure is provided on the extension. A gun head is provided at the head of the inner tube. The grouting anchor gun of this utility model has a reasonable structural design, is easy to operate, and can be operated by personnel outside the furnace shell. The grouting process is strictly controllable, effectively solving the difficulties in lining the hot surface of the cooling wall and the problem of easy detachment after lining in the prior art.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling wall hot surface lining, and in particular to a grouting anchor gun. Background Technology

[0002] During the blast furnace smelting process, the hot surface of the cooling wall gradually wears down due to the scouring effect of the charge flow, resulting in a thinner cooling wall and eventually leakage in the cooling channels. Although existing repair methods can prevent cooling water leakage for a period of time, the risk of leakage remains with continued wear. To reliably extend the service life of the cooling wall, lining treatment is required on the hot surface. However, due to the harsh environment inside the blast furnace, how to perform lining conveniently and with high quality is a challenge for those skilled in the art. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the present invention provides a grouting anchor gun.

[0004] The grouting anchor gun provided by this utility model adopts the following technical solution: A grouting anchor gun includes a grouting pipe that passes through the furnace shell and cooling wall. A grouting hole is provided on the peripheral wall of one end of the grouting pipe inside the blast furnace. A grouting device is installed at the other end of the grouting pipe. An inner tube is inserted inside the grouting pipe. The length of the inner tube is greater than the length of the grouting pipe. The part of the inner tube that extends out of the grouting pipe is called an extension. A material hanging structure is provided on the extension of the inner tube. A gun head is provided at the head of the inner tube.

[0005] By adopting the above technical solution, the grouting anchor gun of this utility model has a reasonable structural design and is easy to operate. It can be operated by staff outside the furnace shell. The grouting process is strictly controllable, which effectively solves the difficult problems of lining the hot surface of the cooling wall and the problem of easy detachment after lining in the prior art.

[0006] Preferably, an overflow hole is provided on the peripheral wall of the head of the inner tube, and an overflow valve is connected to the tail of the inner tube.

[0007] By adopting the above technical solutions, the design of the overflow hole and overflow valve makes it easier for staff to judge the degree of grouting.

[0008] Preferably, the gun head includes a conical part and a cylindrical part. The conical part is connected to the inner tube, and the cylindrical part is sleeved on the inner tube. The inner diameter of the cylindrical part is larger than the outer diameter of the inner tube, and the overflow hole is located inside the cylindrical part.

[0009] By adopting the above technical solution, a gun head with a conical part is used to facilitate the smooth insertion of the grouting anchor gun, while the cylinder part protects the overflow hole during the insertion of the grouting anchor gun to prevent foreign objects from entering the overflow hole and causing blockage.

[0010] Preferably, the tapered part is provided with a threaded groove, the head of the inner tube is provided with an external thread, and the head of the inner tube is threadedly connected to the tapered part.

[0011] By adopting the above technical solution, the gun head and the inner tube are installed by thread, which facilitates the assembly of the two.

[0012] Preferably, the grouting device includes a connector and a grouting valve. The connector is threadedly installed at the tail end of the grouting pipe, and the grouting valve is vertically threadedly installed on the connector. The grouting valve is connected to the inside of the grouting pipe.

[0013] By adopting the above technical solution, it is convenient to inject corundum grout into the grouting pipe through the grouting valve.

[0014] Preferably, the hanging structure includes multiple anchor bars fixed around the protrusion.

[0015] By adopting the above technical solution, the anchor bar is easy to manufacture and weld, and has a good anchoring effect.

[0016] Preferably, the grouting pipe is welded and fixed to the furnace shell.

[0017] By adopting the above technical solution, the grouting anchor gun is fixed to the furnace shell by welding, which makes the grouting position accurate, the grouting process stable, and the grouting anchor gun and the furnace shell form an integral whole. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the lining construction according to an embodiment of the present utility model. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the lining construction according to an embodiment of the present utility model. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the grouting anchor gun according to an embodiment of the present invention.

[0021] Figure 4 This is a cross-sectional view of the head of the grouting anchor gun according to an embodiment of the present invention.

[0022] Figure 5 This is a cross-sectional view of the tail of the grouting anchor gun according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached drawings: 1. Cooling wall; 10. Water channel; 11. Water supply pipe; 2. Furnace shell; 3. Refractory material; 4. Grouting pipe; 40. Grouting hole; 5. Grouting device; 50. Joint; 51. Grouting valve; 6. Inner pipe; 60. Overflow hole; 7. Overflow valve; 8. Anchor bar; 9. Gun head; 90. Cone; 91. Cylinder. Detailed Implementation

[0024] The following combination Figures 1-5 The present invention will be further described in detail below. An embodiment of the present invention discloses a grouting anchor gun.

[0025] Reference Figures 1-5 After the hot surface of the cooling wall 1 is worn, the water channel 10 inside is exposed. The upper and lower ends of the water channel 10 are connected to the water supply pipe 11 respectively. The water supply pipe 11 passes through the furnace shell 2 and the refractory material 3. The refractory material 3 is located between the furnace shell 2 and the cooling wall 1. After the water channel 10 is repaired, the grouting and lining process can be carried out.

[0026] Multiple through holes are drilled in a matrix on the cooling wall 1, furnace shell 2, and refractory material 3. The grouting anchor gun is inserted into the through hole from the outside of the furnace shell 2, and part of the grouting anchor gun is inserted into the interior of the blast furnace. After the grouting anchor gun is in place, it is welded and fixed to the furnace shell 2. The main body of the grouting anchor gun is made of stainless steel and includes a grouting pipe 4. A grouting hole 40 is opened on the peripheral wall of one end of the grouting pipe 4 inside the blast furnace. A grouting device 5 for conveying corundum grout into the grouting pipe 4 is installed at the other end of the grouting pipe 4. The grouting device 5 includes a connector 50 threaded on the grouting pipe 4. A grouting valve 51 is vertically threaded on the connector 50 and communicates with the interior of the grouting pipe 4.

[0027] An inner tube 6 is fixed inside the grouting pipe 4. The length of the inner tube 6 is greater than the length of the grouting pipe 4. The part of the inner tube 6 that extends out of the grouting pipe 4 is called the protrusion. An overflow hole 60 is opened on the peripheral wall of the head of the protrusion of the inner tube 6. An overflow valve 7 is threaded on the connector 50. The overflow valve 7 communicates with the inside of the inner tube 6. Multiple sets of anchor bars 8 are uniformly fixed around the peripheral wall of the protrusion of the inner tube 6. Each set includes multiple anchor bars 8 evenly distributed along the length of the inner tube 6. In other embodiments, other structures (such as mesh structures) can also be used as the hanging structure, which is not limited here.

[0028] The head of the inner tube 6 is also equipped with a gun head 9. The gun head 9 includes a conical cone 90 and a cylindrical part 91 coaxially fixed to the bottom surface of the cone 90. The cone 90 is provided with a threaded groove, and the head of the inner tube 6 is provided with an external thread. The head of the inner tube 6 is threadedly connected to the cone 90. The inner diameter of the cylindrical part 91 is larger than the outer diameter of the inner tube 6. The overflow hole 60 is located inside the cylindrical part 91, and the cylindrical part 91 protects the overflow hole 60.

[0029] The implementation principle of the grouting anchor gun in this embodiment is as follows: First, holes are drilled in the cooling wall 1, furnace shell 2, and refractory material 3. Then, the grouting anchor gun is inserted into the holes, so that the grouting hole 40 is located inside the blast furnace. The grouting pipe 4 is welded and fixed to the furnace shell 2. Then, the grouting valve 51 and the overflow valve 7 are opened, and the corundum grout is transported to the grouting pipe 4 through the grouting valve 51. The grout is output through the grouting hole 40 and fills the broken part of the hot surface of the cooling wall 1. The grout is firmly attached to the grouting anchor gun through the anchoring rib 8. After grouting for a period of time, the grout enters the inner pipe 6 through the overflow hole 60 and is finally discharged through the overflow valve 7. At this time, the operator can judge that the grouting is completed and close the grouting valve 51 and the overflow valve 7.

[0030] The grouting anchor gun is welded to the furnace shell 2, ensuring accurate grouting position and stable grouting process, and the grouting anchor gun and furnace shell 2 form an integral whole. The gun head 9 with a cone 90 is used to facilitate smooth insertion of the grouting anchor gun, while the cylinder 91 protects the overflow hole 60 during the insertion of the grouting anchor gun to prevent foreign objects from entering the overflow hole 60 and causing blockage. The gun head 9 and the inner tube 6 are connected by threads, which facilitates the assembly of the two. The design of the overflow hole 60 and the overflow valve 7 makes it easy for the staff to judge the degree of grouting, and the design of the grouting valve 51 makes it easy for the staff to control the grouting progress.

[0031] The grouting anchor gun of this utility model is reasonably designed in structure and easy to operate. It can be operated by staff outside the furnace shell 2. The grouting progress and grouting degree are strictly controllable. It effectively solves the difficult problems of lining the hot surface of the cooling wall 1 and the problem of easy detachment after lining in the prior art.

[0032] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A grouting anchor gun, characterized in that: It includes a grouting pipe (4) that passes through the furnace shell (2) and the cooling wall (1). A grouting hole (40) is provided on the peripheral wall of one end of the grouting pipe (4) located inside the blast furnace. A grouting device (5) is installed at the other end of the grouting pipe (4). An inner tube (6) is installed inside the grouting pipe (4). The length of the inner tube (6) is greater than the length of the grouting pipe (4). The part of the inner tube (6) that extends out of the grouting pipe (4) is designated as an extension. A material hanging structure is provided on the extension of the inner tube (6). A gun head (9) is provided at the head of the inner tube (6).

2. The grouting anchor gun according to claim 1, characterized in that: An overflow hole (60) is provided on the peripheral wall of the head of the inner tube (6), and an overflow valve (7) is connected to the tail of the inner tube (6).

3. The grouting anchor gun according to claim 2, characterized in that: The gun head (9) includes a cone (90) and a cylindrical part (91). The cone (90) is connected to the inner tube (6), and the cylindrical part (91) is fitted onto the inner tube (6). The inner diameter of the cylindrical part (91) is larger than the outer diameter of the inner tube (6), and the overflow hole (60) is located inside the cylindrical part (91).

4. The grouting anchor gun according to claim 3, characterized in that: The cone (90) is provided with a threaded groove, and the head of the inner tube (6) is provided with an external thread, and the head of the inner tube (6) is threadedly connected to the cone (90).

5. The grouting anchor gun according to claim 1, characterized in that: The grouting device (5) includes a connector (50) and a grouting valve (51). The connector (50) is threadedly installed at the end of the grouting pipe (4), and the grouting valve (51) is vertically threadedly installed on the connector (50). The grouting valve (51) is internally connected to the grouting pipe (4).

6. The grouting anchor gun according to claim 1, characterized in that: The hanging structure includes multiple anchor bars (8) that are fixed around the protrusion.

7. The grouting anchor gun according to any one of claims 1-6, characterized in that: The grouting pipe (4) is welded and fixed to the furnace shell (2).

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