Injection head and blast furnace injection device

Abstract

The injection head comprises a mounting section and a head part connected to the front end of the mounting section, and a through channel is formed in the center of the mounting section and the center of the head part; a clamping groove is formed in the front end of the installation section, a protruding block matched with the clamping groove is arranged on the side, close to the installation section, of the head, and the protruding block is clamped in the clamping groove so that the head can be connected with the installation section. The replaceable head part is mounted at the front end of the injection head, so that after the head part is damaged, the head part can be independently replaced, the whole injection head does not need to be replaced, and the use cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace equipment technology, and in particular to a blower head and a blast furnace blower device. Background Technology

[0002] Existing blast furnace injection systems have injection heads installed at the front end. For example, Chinese patent document CN107267699A discloses a blast furnace injection system, in which the tuyeres sleeve is equivalent to the injection head of this utility model. In production conditions, the furnace temperature exceeds 1500℃, making the injection heads highly susceptible to damage, with the damage primarily occurring at the front end. Currently, when an injection head is damaged, it must be replaced entirely, resulting in high operating costs. Therefore, we have improved the existing injection head. Utility Model Content

[0003] To address the existing technical problems, the main objective of this utility model is to provide a blower head and a blast furnace blower device. By installing a replaceable head at the front end of the blower head, the head can be replaced separately when it is damaged, instead of replacing the entire blower head, thus reducing the cost of use.

[0004] To overcome the problems existing in the prior art, the technical solution adopted by this utility model is: a spray nozzle, including an installation section and a head connected to the front end of the installation section, wherein a through channel is provided in the center of the installation section and the head;

[0005] The front end of the mounting section is provided with a slot, and the head is provided with a protrusion that matches the slot on the side of the mounting section. The protrusion is fitted into the slot to connect the head to the mounting section.

[0006] The card slot is arranged radially, and the upper opening width L1 of the card slot is greater than the lower opening width L2.

[0007] The slot has a trapezoidal structure.

[0008] The slot has a convex shape.

[0009] The slots are axially arranged, and there are multiple slots. Each slot is a blind hole located on the front end face of the mounting section, and the number of protrusions corresponds to the number of blind holes.

[0010] The mounting section has a first pin hole radially arranged at the slot, and a first limiting hole is provided on the protrusion. The pin passes through the first pin hole and the first limiting hole.

[0011] The front end of the mounting section is provided with a second limiting hole in the axial direction, and the head is provided with a second pin hole in the axial direction. The pin passes through the second pin hole and the second limiting hole.

[0012] The mounting section is made of copper, and the head is made of zirconium oxide.

[0013] A blast furnace injection device employs the aforementioned injection head.

[0014] The present invention has the following beneficial effects:

[0015] 1. This utility model reduces the cost of use by installing a replaceable head at the front end of the nozzle. When the head is damaged, it can be replaced separately instead of replacing the entire nozzle.

[0016] 2. In this utility model, the head is limited by a pin and the mounting section to prevent the head from falling off during installation and use. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the installation section of this utility model.

[0020] Figure 3 This is a schematic diagram of the main structure of the installation section of this utility model.

[0021] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of AA shows that the slot has a trapezoidal structure.

[0022] Figure 5 for Figure 3 A schematic diagram of the cross-sectional structure of the AA section shows that the card slot has a convex shape.

[0023] Figure 6 This is a three-dimensional structural diagram of the head of this utility model.

[0024] Figure 7 This is a schematic diagram of the main structure of the head of this utility model.

[0025] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure of BB.

[0026] Figure 9 This is an exploded view of the present invention.

[0027] Figure 10 This is a schematic diagram of the structure of the present invention, which features a second limiting hole and a second pin hole arranged axially.

[0028] Figure 11 This is a schematic diagram of the structure of the slot in this utility model.

[0029] Figure label:

[0030] Installation section 10, slot 11; first pin hole 12, second limit hole 13;

[0031] Head 20, protrusion 21, first limiting hole 22, second pin hole 23;

[0032] Channel 30;

[0033] Pin 40. Detailed Implementation

[0034] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] Example 1:

[0036] See Figure 1-11 The present invention provides a blower head, including a mounting section 10 and a head 20 connected to the front end of the mounting section 10, wherein a through channel 30 is provided at the center of the mounting section 10 and the head 20.

[0037] The front end of the mounting section 10 is provided with a slot 11, and the head 20 is provided with a protrusion 21 that is adapted to the slot 11 on one side of the mounting section 10. The protrusion 21 is fitted into the slot 11 to connect the head 20 to the mounting section 10.

[0038] By installing a replaceable head 20 at the front end of the nozzle, the head 20 can be replaced separately when it is damaged, instead of replacing the entire nozzle, thus reducing the cost of use.

[0039] In this embodiment, see Figure 2 , 3 6, 7, The card slot 11 is radially arranged, and the upper opening width L1 of the card slot 11 is greater than the lower opening width L2.

[0040] In one of the solutions, see Figure 4The slot 11 has a trapezoidal structure. The trapezoidal structure is similar to a dovetail groove structure. Because the upper opening width L1 of the slot 11 is greater than the lower opening width L2, and the protrusion 21 of the head 20 also fits the slot 11, as... Figure 1 , 6 As shown, the head 20 can be installed on the mounting section 10.

[0041] In another option, see Figure 5 The slot 11 has a convex shape. Similarly, since the upper opening width L1 of the slot 11 is greater than the lower opening width L2, and the protrusion 21 of the head 20 is also adapted to the slot 11, the head 20 can be snapped onto the mounting section 10.

[0042] It is important to note that during installation, the width L1 of the upper opening should be located on the top side.

[0043] In the preferred embodiment, the mounting section 10 is made of copper, and the head 20 is made of zirconium oxide.

[0044] Example 2:

[0045] The difference from Example 1 is that, see [link to example]. Figure 11 The slot 11 is axially arranged, and there are multiple slots 11. The slot 11 is a blind hole set on the front end face of the mounting section 10, and the number of protrusions 21 corresponds to the number of blind holes.

[0046] Specifically, the slots 11 are evenly distributed in a ring on the front end face of the mounting section 10, and the protrusions 21 are located on the rear end face of the head 20. The size and number of the protrusions 21 correspond to the slots 11, and the protrusions 21 are inserted into the slots 11.

[0047] In this embodiment, the slot 11 can be a round hole or an arc-shaped hole.

[0048] Example 3:

[0049] Based on Embodiment 1 or Embodiment 2, in order to limit the head 20 and prevent the head 20 from falling off. See Figure 1 , 2 4, 5, 7, 8, 9, 11, the mounting section 10 is located at the slot 11, and a first pin hole 12 is radially provided. A first limiting hole 22 is provided on the protrusion 21. The pin 40 passes through the first pin hole 12 and the first limiting hole 22.

[0050] Specifically, the first pin hole 12 is a through hole, and the first limiting hole 22 is a blind hole.

[0051] Example 4:

[0052] Based on Example 1, see Figure 10The front end of the mounting section 10 is axially provided with a second limiting hole 13, and the head 20 is axially provided with a second pin hole 23. The pin 40 passes through the second pin hole 23 and the second limiting hole 13. This limits the head 20 and prevents it from falling off.

[0053] Specifically, the second pin hole 23 is a through hole, and the second limiting hole 13 is a blind hole.

[0054] Example 5:

[0055] Based on embodiments 1 to 4, this utility model also relates to a blast furnace injection device, which uses the aforementioned injection head.

[0056] For example, in conjunction with CN107267699A, the small air vent sleeve in that document can be replaced with the blower head of this application.

[0057] Of course, the injection head of this application can also be used in blast furnace injection devices of other structures.

Claims

1. A blow head, characterized by: The installation section (10) and the head (20) are provided with a through channel (30) in the center thereof; The front end of the installation section (10) is provided with a clamping groove (11), and the side of the head (20) close to the installation section (10) is provided with a protrusion (21) matched with the clamping groove (11), the protrusion (21) is clamped in the clamping groove (11) to connect the head (20) with the installation section (10).

2. A blow head according to claim 1, characterized in that: The clamping groove (11) is radially arranged, and the upper end opening width L1 of the clamping groove (11) is greater than the lower end opening width L2.

3. A blow head according to claim 2, characterized in that: The clamping groove (11) is in a trapezoidal structure.

4. A blow head according to claim 2, characterized in that: The clamping groove (11) is in a convex structure.

5. A blow head according to claim 1, characterized in that: The clamping groove (11) is axially arranged, and a plurality of clamping grooves (11) are arranged, the clamping groove (11) is a blind hole arranged on the front end surface of the installation section (10), and the number of the protrusions (21) corresponds to the number of the blind holes.

6. A blow head according to any one of claims 2 to 5, characterized in that: The installation section (10) is provided with a first pin hole (12) radially at the clamping groove (11), the protrusion (21) is provided with a first limiting hole (22), and a pin (40) penetrates the first pin hole (12) and the first limiting hole (22).

7. A blow head according to any one of claims 2 to 4, characterised in that: The front end of the installation section (10) is axially provided with a second limiting hole (13), the head (20) is axially provided with a second pin hole (23), and a pin (40) penetrates the second pin hole (23) and the second limiting hole (13).

8. A blow head according to claim 1, characterized in that: The installation section (10) is made of copper, and the head (20) is made of zirconia.

9. A blast furnace injection device, characterized by: A blow head is adopted according to any one of claims 1 to 8. A blow head is adopted according to any one of claims 1 to 8.

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