Auxiliary installation device for blast furnace coal injection gun

Abstract

This utility model discloses an auxiliary installation device for a blast furnace pulverized coal injection lance, belonging to the technical field of blast furnace ironmaking equipment. It includes a pulverized coal injection lance, a short connecting pipe, and a valve connecting the pulverized coal injection lance and the short connecting pipe. The auxiliary installation device includes a sleeve, a pneumatic hammer, and a hammer chisel detachably connected to the output end of the pneumatic hammer. One end of the sleeve has a first axial cavity for movably embedding the short connecting pipe, and the other end of the sleeve has a second axial cavity for movably embedding the hammer chisel. The first and second axial cavities are not interconnected. The purpose of this utility model is to overcome the shortcomings of the prior art and provide an auxiliary installation device for a blast furnace pulverized coal injection lance, solving the problems of high labor intensity and low efficiency in the installation of existing pulverized coal injection lances.

Description

Technical Field

[0001] This utility model belongs to the technical field of blast furnace ironmaking equipment, specifically relating to an auxiliary installation device for a blast furnace pulverized coal injection lance. Background Technology

[0002] In traditional blast furnace pulverized coal injection lance installation, the installer directly pushes the pulverized coal injection lance into the lance fork tube by hand, and then uses pipe wrenches to rotate the pulverized coal injection lance slightly to move it to the designated position.

[0003] However, in order to increase the service life of existing blast furnace pulverized coal injection lances, the existing blast furnace pulverized coal injection lances are upgraded to anti-deformation lances lined with wear-resistant ceramics. However, this improvement results in a significant increase in the outer diameter of the lance, which causes the lance to encounter serious obstruction when passing through the lance fork tube.

[0004] Furthermore, even with the use of sledgehammers to apply external force and unconventional techniques such as large-scale rotation with pipe wrenches, installers still struggle to successfully install the coal gun in place. This installation method not only significantly prolongs installation time and reduces production efficiency, but also carries the risk of uneven impact leading to surface wear and ceramic lining detachment, thus affecting the performance and service life of the coal gun. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an auxiliary installation device for blast furnace pulverized coal injection guns, which solves the problems of high labor intensity and low efficiency in the installation of existing pulverized coal injection guns.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an auxiliary installation device for a blast furnace pulverized coal injection gun, comprising a pulverized coal injection gun, a short connecting pipe, and a valve connected between the pulverized coal injection gun and the short connecting pipe. The auxiliary installation device includes a sleeve, a pneumatic jackhammer, and a jackhammer steel chisel detachably connected to the output end of the pneumatic jackhammer. The sleeve has a first axial cavity along its axial direction for movably embedding the short tube, and a second axial cavity along its axial direction for movably embedding the pneumatic pick steel rod. The first axial cavity and the second axial cavity are not connected.

[0007] Optionally, a rubber pad is embedded in the first shaft cavity to abut against the end of the short tube.

[0008] Optionally, the thickness of the rubber pad is greater than 5 mm.

[0009] Optionally, the inner wall of the first shaft cavity is clearance-fitted with the outer wall of the short connecting pipe, and the inner wall of the second shaft cavity is clearance-fitted with the outer wall of the pneumatic pick steel rod.

[0010] Optionally, the difference between the inner diameter of the first shaft cavity and the outer diameter of the short connecting pipe is 0.5mm to 1mm, and the difference between the inner diameter of the second shaft cavity and the outer diameter of the pneumatic pick steel chisel is 0.5mm to 1mm.

[0011] Optionally, the sleeve is integrally formed with the first shaft cavity and the second shaft cavity.

[0012] Optionally, the distance between the first shaft cavity and the second shaft cavity is greater than 4 cm.

[0013] Optionally, the radial cross-section of the sleeve is circular or annular.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: by using a sleeve that can be inserted and matched with the short pipe and the steel rod of the pneumatic pick, the operator can use the pneumatic pick to quickly and evenly impact the short pipe, so that the coal gun can quickly reach the predetermined position on the coal gun fork tube, which improves efficiency and can also significantly reduce the labor intensity when installing the coal gun. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a cross-sectional view of the auxiliary installation device for the blast furnace pulverized coal injection gun in a preferred embodiment of the present invention. Among them, 1. Coal gun; 2. Short pipe; 3. Valve; 4. Sleeve; 401. First shaft cavity; 402. Second shaft cavity; 5. Pneumatic pick; 6. Pick steel chisel; 7. Rubber pad. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0018] It should be noted that if directional indicators (such as up, down, bottom, top, etc.) are involved in this embodiment, these directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Example 1

[0019] like Figure 1 As shown, an auxiliary installation device for a blast furnace pulverized coal injection lance includes a pulverized coal lance 1, a short connecting pipe 2, and a valve 3 connecting the pulverized coal lance 1 and the short connecting pipe 2. The auxiliary installation device includes a sleeve 4, a pneumatic jackhammer 5, and a jackhammer chisel 6 detachably connected to the output end of the pneumatic jackhammer 5. One end of the sleeve 4 has a first axial cavity 401 for movably embedding the short connecting pipe 2, and the other end of the sleeve 4 has a second axial cavity 402 for movably embedding the jackhammer chisel 6. The first axial cavity 401 and the second axial cavity 402 are not connected.

[0020] In actual use, the operator can initially connect the coal gun 1 to the coal gun fork tube, and then operate the sleeve 4 to be fitted onto the short pipe 2 connected to the coal gun 1 via the valve 3, so that the first shaft cavity 401 on the sleeve 4 is inserted into the end of the short pipe 2. Then, maintaining the connection between the sleeve 4 and the short pipe 2, one end of the pneumatic pick steel rod 6 is inserted into the second shaft cavity 402, and the other end of the pneumatic pick steel rod 6 is connected to the output end of the pneumatic pick 5. Finally, the operator can start the pneumatic pick 5 while supporting the sleeve 4, so that the pneumatic pick 5 can apply a uniform impact force to the short pipe 2 and the coal gun 1 through the sleeve 4, so that the coal gun 1 can be quickly installed into the predetermined position of the coal gun fork tube, which greatly reduces the labor intensity of installing the coal gun 1 and improves labor efficiency.

[0021] It should be noted that the detachable connection between the pneumatic pick's steel chisel 6 and the output end of the pneumatic pick 5 is achieved through a quick-connect mechanism using existing technologies such as a slot-type connection structure and a pin-type connection structure. The pneumatic pick 5 can rely on compressed air provided by an external air compressor to drive the internal piston (and the external output end) to perform high-frequency reciprocating motion, thereby applying a uniform impact force to the sleeve 4.

[0022] Furthermore, such as Figure 1 As shown, a rubber pad 7 is embedded in the first shaft cavity 401, which can abut against the end of the short tube 2, so as to avoid damage or deformation of the short tube 2 due to rigid contact with the bottom of the first shaft cavity 401.

[0023] The above, such as Figure 1 As shown, the thickness of the rubber pad 7 is greater than 5mm to avoid the rubber pad 7 having too low an impact resistance, making it difficult to meet normal use.

[0024] In this embodiment, the inner wall of the first shaft cavity 401 is clearance-fitted with the outer wall of the short pipe 2, and the inner wall of the second shaft cavity 402 is clearance-fitted with the outer wall of the pneumatic pick 6, to facilitate the insertion and engagement of the short pipe 2 with the first shaft cavity 401 and the pneumatic pick 6 with the second shaft cavity 402. It should be noted that in this technical solution, the difference between the inner diameter of the first shaft cavity 401 and the outer diameter of the short pipe 2 is 0.5mm to 1mm, and the difference between the inner diameter of the second shaft cavity 402 and the outer diameter of the pneumatic pick 6 is also 0.5mm to 1mm. This ensures that the short pipe 2 can be easily pulled out of the first shaft cavity 401 and the pneumatic pick 6 can be easily pulled out of the second shaft cavity 402, while simultaneously ensuring that the pneumatic pick 5 can apply a uniform impact force along the axial direction of the short pipe 2 and the coal gun 1. Example 2

[0025] like Figure 1 As shown, based on Embodiment 1, the sleeve 4 is integrally formed with the first shaft cavity 401 and the second shaft cavity 402. The distance between the first shaft cavity 401 and the second shaft cavity 402 is greater than 4cm, and the sleeve 4 can be made of high-strength metal, such as alloy steel, aluminum alloy, titanium alloy, magnesium alloy, etc., so that the sleeve 4 has sufficient strength to withstand the impact of the pneumatic hammer 5.

[0026] Meanwhile, the radial cross-section of the sleeve 4 is circular or annular to facilitate the operator's grip or support.

[0027] Working principle: The operator can initially connect the coal gun 1 to the coal gun fork tube, and then operate the sleeve 4 to be fitted onto the short pipe 2 connected to the coal gun 1 via the valve 3, so that the first shaft cavity 401 on the sleeve 4 is inserted into the end of the short pipe 2. Then, maintaining the connection between the sleeve 4 and the short pipe 2, one end of the pneumatic pick steel rod 6 is inserted into the second shaft cavity 402, and the other end of the pneumatic pick steel rod 6 is connected to the output end of the pneumatic pick 5. Finally, the operator can start the pneumatic pick 5 while supporting the sleeve 4, so that the pneumatic pick 5 can apply a uniform impact force to the short pipe 2 and the coal gun 1 through the sleeve 4, so that the coal gun 1 can be quickly installed into the predetermined position of the coal gun fork tube, which greatly reduces the labor intensity of installing the coal gun 1 and improves labor efficiency.

[0028] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An auxiliary installation device for a blast furnace coal injection gun, comprising a coal gun (1), a short connecting pipe (2) and a valve (3) connected between the coal gun (1) and the short connecting pipe (2), characterized in that: The auxiliary installation device includes a sleeve (4), a pneumatic jackhammer (5), and a jackhammer chisel (6) that is detachably connected to the output end of the pneumatic jackhammer (5). One end of the sleeve (4) is provided with a first shaft cavity (401) for movably embedding the short tube (2) along its axial direction, and the other end of the sleeve (4) is provided with a second shaft cavity (402) for movably embedding the pneumatic pick steel rod (6) along its axial direction. The first shaft cavity (401) and the second shaft cavity (402) are not connected.

2. The auxiliary mounting device for a coal injection lance of a blast furnace according to claim 1, characterized in that: The first shaft cavity (401) is fitted with a rubber pad (7) that can abut against the end of the short tube (2).

3. The auxiliary mounting device for a coal injection lance of a blast furnace according to claim 2, characterized in that: The thickness of the rubber pad (7) is greater than 5 mm.

4. The auxiliary mounting device for a coal injection lance of a blast furnace according to claim 1, characterized in that: The inner wall of the first shaft cavity (401) is in clearance fit with the outer wall of the short pipe (2), and the inner wall of the second shaft cavity (402) is in clearance fit with the outer wall of the pneumatic pick steel rod (6).

5. The auxiliary mounting device for a coal injection lance of a blast furnace according to claim 4, characterized in that: The difference between the inner diameter of the first shaft cavity (401) and the outer diameter of the short tube (2) is 0.5mm to 1mm, and the difference between the inner diameter of the second shaft cavity (402) and the outer diameter of the pneumatic pick steel rod (6) is 0.5mm to 1mm.

6. The auxiliary mounting device for a coal injection lance of a blast furnace according to claim 1, characterized in that: The sleeve (4) is integrally formed with the first shaft cavity (401) and the second shaft cavity (402).

7. The auxiliary mounting device for a coal injection lance of a blast furnace according to claim 1, characterized in that: The distance between the first shaft cavity (401) and the second shaft cavity (402) is greater than 4cm.

8. The auxiliary mounting device for a coal injection lance of a blast furnace according to claim 1, characterized in that: The radial cross-section of the sleeve (4) is circular or annular.

Images