Blast furnace tuyere suite beating device

Abstract

The utility model provides a blast furnace tuyere suite striking device which mainly comprises an impact shaft, a reverse striking valve group, a reverse striking piston cylinder, a cylinder body, a forward striking piston cylinder and a forward striking valve group, a reverse beating piston and a forward beating piston are installed in the cylinder body assembly 7, impact energy is transmitted through forward and reverse movement of the pneumatic piston, and the small sleeve in the blast-furnace tuyere is beaten or strongly vibrated to be disassembled and assembled. When the small and medium sleeves are detached, reverse high-frequency impact is adopted until detaching is completed; when the small and medium sleeves are installed, forward high-frequency impact is adopted until installation is completed. The device is simple in structure, convenient to operate, short in disassembly and assembly time and high in efficiency, the labor intensity of maintenance personnel is relieved, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical maintenance equipment, in particular to a striking device for blast furnace tuyere kits used for disassembling and assembling small and medium-sized sleeves of blast furnace tuyeres. Background Art

[0002] The blast furnace tuyere is composed of a tuyere outer sleeve, a middle sleeve and a small sleeve; when the middle sleeve and the small sleeve of the blast furnace tuyere are working, due to being close to the high-temperature smelting environment in the furnace, they are prone to accidents such as molten iron splashing and burning damage. In particular, the small sleeve directly enters the furnace, and the working environment is harsh, and the number of damages per year is relatively large. Therefore, when the middle sleeve and the small sleeve of the tuyere have been used for too long or are burned out, they need to be replaced or repaired in time. Since the middle and small sleeves of the tuyere have been splashed and bonded or sintered together by molten iron under high-temperature environment, and the bonding material has a high hardness, therefore, to replace the middle and small sleeves of the tuyere, it is necessary to disassemble them by striking or vibrating and then transport them out of the blast furnace tuyere.

[0003] At present, during the disassembly process of the middle and small sleeves of the blast furnace tuyere, most still use a manual sledgehammer to strike a steel drill to hit the middle and small sleeves of the tuyere, and there are also some semi-mechanized striking tools such as pneumatic picks and electric hammers to complete the disassembly work of the middle and small sleeves. However, the disassembly work is very arduous, the labor intensity of the operators is high, the work efficiency is very low, and the working environment is also full of potential safety hazards. Summary of the Utility Model

[0004] Aiming at the problem of disassembling and assembling the middle and small sleeves of the blast furnace tuyere at present, the utility model designs a striking device for blast furnace tuyere kits. The device is connected to a device for replacing the middle and small sleeves of the blast furnace tuyere, is installed on a striking vehicle of the blast furnace tuyere, and strikes or strongly vibrates the middle and small sleeves of the blast furnace tuyere through the forward and reverse movements of a pneumatic piston, so as to realize the disassembly and assembly of the middle and small sleeves of the blast furnace tuyere.

[0005] The utility model designs a striking device for blast furnace tuyere kits, which includes a cylinder body and a piston. It is characterized in that it includes an impact shaft 1, a cylinder body assembly 7, a forward-striking piston cylinder 12, a reverse-striking piston cylinder 6, and a forward-striking valve group 13 and a reverse-striking valve group 4; a reverse-striking piston cylinder 6 and a reverse-striking piston 5 matched with it are arranged at the front part of the cylinder body assembly 7, and a forward-striking piston cylinder 12 and a forward-striking piston 10 matched with it are arranged at the tail part of the cylinder body assembly 7; the front part of the impact shaft 1 is installed in the central hole of the reverse-striking piston 5, and the tail of the impact shaft 1 corresponds to and contacts the front end of the forward-striking piston 10; the forward-striking piston cylinder 12 is connected with a forward-striking valve group 13, and the reverse-striking piston cylinder 6 is connected with a reverse-striking valve group 4; the cylinder body assembly 7 is installed with a front end cover 2 and a rear end cover 14; wherein, the reverse-striking piston 5 and the impact shaft 1 are located in the same moving cylinder body of the cylinder body assembly 7 and are provided with a mutual moving distance.

[0006] The features of the present utility model further lie in that the impact shaft 1 is composed of a small shaft part and a large shaft part. A connecting end face is formed at the transition connection between the small shaft and the large shaft, and a groove is provided at the large shaft end. The connecting end face of the impact shaft 1 corresponds to the reverse impact piston 5. The reverse impact piston 5 is composed of a large shaft part, a small shaft part and a central hole. The large shaft part of the reverse impact piston 5 is assembled in the reverse impact piston cylinder 6, and its small shaft part corresponds to the connecting end face of the impact shaft 1. The forward impact piston 10 is composed of a large shaft part and a small shaft part. Its large shaft part is assembled in the piston cylinder 12, and its small shaft part corresponds to and contacts the groove at the large shaft end of the impact shaft 1.

[0007] The further features of the present utility model also lie in that the forward impact piston cylinder 12 and the reverse impact piston cylinder 6 connected to the forward impact valve group 13 and the reverse impact valve group 4 are provided with cylinder body air inlet holes, air outlet holes and exhaust holes, and the forward impact valve group 13 and the reverse impact valve group 4 are provided with air inlet valves. In the cylinder block assembly 7, a matching front cylinder sleeve 3, a front guide sleeve 8, a rear cylinder sleeve 9 and a rear guide sleeve 11 are also provided for each cylinder block. The cylinder sleeves are installed on their respective cylinder blocks. Through holes communicating with the air inlet holes, air outlet holes and exhaust holes of the cylinder body are also provided on the cylinder sleeves.

[0008] The features of the present utility model further lie in that the connecting rod part on the impact shaft 1 extends to the outside of the front end cover 2, and a slot is provided at the front part of the connecting rod and is connected to the medium and small sleeve replacement device. Plug-in or mounting connectors are also provided above and below the cylinder block assembly 7.

[0009] During the disassembly and assembly process of the blast furnace tuyere kit impact device of the present utility model, the impact energy is transmitted to the medium and small sleeve replacement device through the forward and reverse pneumatic piston movements, and the blast furnace tuyere medium and small sleeves are impacted or strongly vibrated to realize the disassembly and assembly of the blast furnace tuyere medium and small sleeves. When disassembling the medium and small sleeves, reverse high-frequency impact is adopted until the disassembly is completed; when installing the medium and small sleeves, forward high-frequency impact is adopted until the installation is completed. The structure of the present utility model is simple, the operation is convenient, the disassembly and assembly time is short, the efficiency is high, the labor intensity of maintenance personnel is reduced, and the production cost is saved. Description of the Drawings

[0010] Figure 1 is the overall assembly structure schematic diagram of the present utility model.

[0011] The numbers in the drawings represent: impact shaft 1, front end cover 2, front cylinder sleeve 3, reverse impact valve group 4, reverse impact piston 5, reverse impact piston cylinder 6, cylinder block 7, front guide sleeve 8, rear steel sleeve 9, forward impact piston 10, rear guide sleeve 11, forward impact piston cylinder 12, forward impact valve group 13, rear end cover 14. Detailed Embodiments

[0012] The present utility model will be described in detail with reference to the accompanying drawings and exemplary embodiments. The preferred embodiments are shown in the drawings. Some components may not be shown when they are clearly described, and some figures may be enlarged or exaggerated. However, these preferred embodiments do not limit other implementation manners of the present utility model.

[0013] In view of the current situation that during the disassembly and assembly process of the tuyere small sleeve and medium sleeve in an existing blast furnace, the labor intensity of operators is high and the working environment is harsh, the present utility model designs a tuyere small sleeve and medium sleeve striking device with a simple structure and convenient operation, which can not only reduce the labor intensity but also improve the disassembly and assembly efficiency. The present utility model is installed on a tuyere kit striking vehicle through a plugging or mounting connector on its cylinder block, connected to a small and medium sleeve replacement device through a connecting rod slot on an impact shaft 1, and transmits impact work through the forward and reverse movements of a pneumatic piston on the device, so that the small and medium sleeve replacement device quickly strikes and strongly vibrates the tuyere small sleeve and medium sleeve of the blast furnace, thereby quickly realizing the disassembly and assembly of the tuyere small sleeve and medium sleeve of the blast furnace.

[0014] As Figure 1 shown, the specific structure of the present utility model mainly includes an impact shaft 1, a front end cover 2, a reverse striking valve group 4, a reverse striking piston 5, a reverse striking piston cylinder 6, a cylinder block 7, a forward striking piston 10, a forward striking piston cylinder 12, a forward striking valve group 13, and a rear end cover 14; it also includes a front cylinder sleeve 3 and a front guide sleeve 8, a rear cylinder sleeve 9, and a rear guide sleeve 11 that the device matches for each different cylinder block; the installation of the front steel sleeve 3 and the front guide sleeve 8, as well as the rear cylinder sleeve 9 and the rear guide sleeve 11, is used to protect the reverse striking piston cylinder 6 and the forward striking piston cylinder 12 from being worn, and the cylinder sleeves can be conveniently taken out for replacement or repair. The cylinder block assembly 7 is installed with a front end cover 2 and a rear end cover 14; plugging connectors or mounting connectors are also provided above and below the cylinder block assembly 7 to facilitate installation on a blast furnace tuyere striking device.

[0015] The impact shaft 1 of the present utility model is composed of a small shaft part and a large shaft part. A connecting end face is formed at the transition connection between the small shaft and the large shaft. A groove is also provided at the large shaft end of the impact shaft 1. The large shaft part of the impact shaft 1 and the small shaft part of the reverse striking piston 5 are located in the same moving cylinder block. The small shaft end face of the reverse striking piston 5 corresponds to the connecting end face of the impact shaft 1 and is designed with a corresponding moving distance, so as to facilitate the reverse striking piston 5 to have sufficient impact area and impact length when contacting the connecting end face of the impact shaft 1. A groove is also provided at the large shaft end of the impact shaft 1 to correspondingly contact the small shaft part of the forward striking piston 10 during movement.

[0016] The reverse striking piston 5 of the present utility model is composed of a large shaft part, a small shaft part, and a central hole. The small shaft part of the impact shaft 1 is installed in the central hole of the reverse striking piston 5. The large shaft part of the reverse striking piston 5 is assembled in the reverse striking piston cylinder 6. Its small shaft part and the impact shaft 1 are located in the same moving cylinder block of the cylinder block assembly 7 and correspond to the connecting end face of the impact shaft 1, and a corresponding moving distance is provided between the two.

[0017] The positive-striking piston 10 of the present utility model is composed of a large-shaft part and a small-shaft part. The large-shaft part is assembled in the positive-striking piston cylinder 12, and the small-shaft part is in corresponding contact with the groove at the large-shaft end of the impact shaft 1, performing impact contact movement during operation.

[0018] Both the positive-striking valve group 13 and the reverse-striking valve group 4 of the present utility model are provided with intake valves. The cylinder bodies of the positive-striking piston cylinder 12 and the reverse-striking piston cylinder 6 connected to the positive-striking valve group 13 or the reverse-striking valve group 4 are each provided with an intake hole, an outlet hole, and an exhaust hole, and the intake and exhaust of the reverse-striking piston cylinder 6 and the positive-striking piston cylinder 12 are respectively controlled by a gas distribution mechanism. The exhaust hole on this device communicates with the external atmosphere to form a pressure difference for the piston during operation.

[0019] The connecting rod part on the impact shaft 1 of the present utility model extends to the outside of the front end cover 2, and a slot or keyway is further provided at the front part of the connecting rod to facilitate the connection of the middle and small sleeve replacement device.

[0020] The impact shaft 1 of the present utility model is installed in the central hole of the reverse-striking piston 5 and is in corresponding contact with the positive-striking piston 10 through the groove at its tail during striking; a positive-striking piston cylinder 12 and a matching positive-striking piston 10 are provided at the tail of the cylinder block assembly 7. The positive-striking piston 10 is controlled by the gas distribution mechanism of the positive-striking valve group 13 connected to the positive-striking piston cylinder 12 to perform forward high-frequency impact. Guided by the rear cylinder sleeve 9 and the rear guide sleeve 11, the positive-striking piston 10 pushes the impact shaft 1 forward to impact the tuyere replacement device to strike the middle and small tuyere sleeves, thereby installing the middle and small tuyere sleeves in place. A reverse-striking piston cylinder 6 and a matching reverse-striking piston 5 are provided at the front part of the cylinder block assembly 7. The reverse-striking piston 5 is controlled by the gas distribution mechanism of the reverse-striking valve group 4 connected to the reverse-striking piston cylinder 6 to perform reverse high-frequency impact. Guided by the front steel sleeve 3 and the front guide sleeve 8, the reverse-striking piston 5 strikes the connecting end face of the impact shaft 1 and pulls the middle and small tuyere sleeves backward through the tuyere replacement device, thereby disassembling the middle and small tuyere sleeves.

[0021] When disassembling the middle and small sleeves of the present utility model, the gas distribution mechanism of the reverse-striking valve group 4 controls the reverse-striking piston 5 to perform high-frequency impact until disassembly is completed; when installing the middle and small sleeves, the gas distribution mechanism of the positive-striking valve group 13 controls the positive-striking piston 10 to perform high-frequency impact until installation is completed. When the installation and disassembly are completed, the striking vehicle directly pulls out the kit striking device and the tuyere replacement device from the blast furnace tuyere.

[0022] Embodiment 1

[0023] This embodiment is for the disassembly and pulling out of the tuyere inner sleeve. First, install the blast furnace tuyere kit hitting device on the tuyere small and medium sleeve hitting vehicle in front of the furnace. The connecting rod with a slot on the impact shaft 1 of this device is connected to the tuyere inner sleeve replacement device. The tuyere small and medium sleeve hitting vehicle transports the tuyere inner sleeve replacement device connected to the tuyere kit hitting device to the position where the tuyere inner sleeve is located. The tuyere inner sleeve replacement device clamps and hooks the tuyere inner sleeve, and then the tuyere hitting device impacts and strikes the tuyere inner sleeve replacement device until the tuyere inner sleeve is disassembled, and then it is pulled out of the blast furnace tuyere by the tuyere small and medium sleeve hitting vehicle.

[0024] As Figure 1 shown, the small shaft part of the impact shaft 1 of this device is installed in the central hole of the reverse impact piston 5 and corresponds to contact with the small shaft part of the forward impact piston 10 through the groove at its large shaft end during impact hitting; during the disassembly process of the tuyere inner sleeve, in this embodiment, the air distribution mechanism of the reverse impact valve group 4 connected to the reverse impact piston cylinder 5 controls the reverse impact piston cylinder 5 to perform reverse high-frequency impacts, pushing the impact shaft 1 connected to it to impact the tuyere inner sleeve replacement device backward, causing the front arm of the tuyere inner sleeve replacement device to strike and vibrate the tuyere inner sleeve, thereby disassembling the tuyere inner sleeve. The barb claws on the front arm of the tuyere inner sleeve replacement device are used to barb the front end face of the disassembled tuyere inner sleeve and are removed from the blast furnace tuyere.

[0025] Embodiment 2

[0026] This embodiment is for the installation of a new tuyere inner sleeve. Similarly, install the blast furnace tuyere kit hitting device on the tuyere small and medium sleeve hitting vehicle in front of the furnace. The impact shaft 1 of this device is connected to the tuyere inner sleeve replacement device, and the new tuyere inner sleeve is sent into the blast furnace tuyere for installation.

[0027] First, install the new tuyere inner sleeve on the front arm of the tuyere inner sleeve replacement device. The tuyere inner sleeve replacement device clamps the new tuyere inner sleeve and uses the barb claws on the front arm to barb the front end face of the new tuyere inner sleeve. The tuyere small and medium sleeve hitting vehicle transports the tuyere inner sleeve replacement device connected to the tuyere kit hitting device and the clamped new tuyere inner sleeve to the position where the tuyere inner sleeve is located; then control the forward impact valve group 13 to make the piston 10 perform forward high-frequency impacts, pushing the impact shaft 1 connected to it to impact the tuyere inner sleeve replacement device forward, causing the front arm of the tuyere inner sleeve replacement device to strike and impact the rear end face of the new tuyere inner sleeve, making it firmly installed in the correct position where the tuyere inner sleeve is located, completing the installation of the new tuyere inner sleeve, and then withdrawing from the blast furnace tuyere through the tuyere small and medium sleeve hitting vehicle.

[0028] The utility model uses a mechanized tuyere small and medium sleeve hitting device for the disassembly and assembly of the tuyere small and medium sleeve. Compared with manual operation, it greatly reduces the labor intensity of maintenance personnel, reduces potential safety hazards, and improves work efficiency.

[0029] The above embodiments of the present utility model are merely exemplary, and various improvements made without departing from the design principle and basic structure of the present utility model shall be regarded as falling within the protection scope of the present utility model.

Claims

1. A blast furnace tuyere kit hitting device, comprising a cylinder block and a piston, characterized in that, It includes an impact shaft, a cylinder block assembly, a forward impact piston cylinder, a reverse impact piston cylinder, a forward impact valve group and a reverse impact valve group; a reverse impact piston cylinder and a reverse impact piston matched and installed therewith are provided at the front of the cylinder block assembly, and a forward impact piston cylinder and a forward impact piston matched and installed therewith are provided at the tail of the cylinder block assembly; the front of the impact shaft is installed in the central hole of the reverse impact piston, and the tail of the impact shaft corresponds to and contacts the front end of the forward impact piston; the forward impact piston cylinder is connected with a forward impact valve group, and the reverse impact piston cylinder is connected with a reverse impact valve group; the cylinder block assembly is installed with a front end cover and a rear end cover; wherein, the reverse impact piston and the impact shaft are located in the same moving cylinder block of the cylinder block assembly and are provided with a mutual moving distance.

2. The hitting device according to claim 1, characterized in that The impact shaft is composed of a small shaft part and a large shaft part, a connecting end face is formed at the transition connection part between the small shaft and the large shaft, and a groove is provided at the large shaft end; the connecting end face of the impact shaft corresponds to the reverse impact piston.

3. The striking device according to claim 1 or 2, characterized in that, The reverse impact piston is composed of a large shaft part, a small shaft part and a central hole, the large shaft part of the reverse impact piston is assembled in the reverse impact piston cylinder, and its small shaft part corresponds to the connecting end face of the impact shaft.

4. The striking device according to claim 1, wherein The forward impact piston is composed of a large shaft part and a small shaft part, its large shaft part is assembled in the piston cylinder, and its small shaft part corresponds to and contacts the groove at the large shaft end of the impact shaft.

5. The hitting device according to claim 1, characterized in that, The forward impact piston cylinder and the reverse impact piston cylinder connected with the forward impact valve group and the reverse impact valve group are provided with a cylinder body air inlet hole, an air outlet hole and an exhaust hole, and the forward impact valve group and the reverse impact valve group are provided with air inlet valves.

6. The striking device according to claim 1, wherein, In the cylinder block assembly, a matching front cylinder liner, a front guide sleeve, a rear cylinder liner and a rear guide sleeve are also provided for each cylinder block; the cylinder liners are installed on their respective cylinder blocks; through holes communicating with the air inlet hole, the air outlet hole and the exhaust hole of the cylinder block are also provided on the cylinder liners.

7. The striking device according to claim 1 or 2, characterized in that, The connecting rod part on the impact shaft extends to the outside of the front end cover, and a slot is also provided at the front part of the connecting rod and is connected with a medium and small sleeve replacement device.

8. The striking device according to claim 1, wherein Plug-in or mounting connectors are also provided above and below the cylinder block assembly.

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