Small hydraulic iron notch drill

Abstract

The utility model discloses a small hydraulic iron notch drill which comprises an impact mechanism, a cylinder sleeve and a piston. The impact mechanism comprises a reversing valve, the reversing valve comprises a reversing valve seat and a reversing valve element, the reversing valve element is arranged in the reversing valve seat, the reversing valve element is fixedly connected with the reversing valve seat in a sealed mode, the reversing valve element is hollow, the reversing valve element is provided with a valve element oil inlet hole and a valve element oil outlet hole, and the valve element oil inlet hole is communicated with the valve element oil outlet hole. The reversing valve seat is provided with a valve seat oil inlet hole and a valve seat oil outlet hole, the valve seat oil inlet hole is communicated with the valve element oil inlet hole, the valve seat oil outlet hole is communicated with the valve element oil outlet hole, an oil cylinder sleeve oil inlet hole and a cylinder sleeve oil outlet hole are formed in the peripheral side of the cylinder sleeve, the valve element oil inlet hole is communicated with the cylinder sleeve oil inlet hole, and the valve element oil outlet hole is communicated with the cylinder sleeve oil outlet hole. And the valve core oil outlet hole is communicated with the cylinder sleeve oil outlet hole. The utility model solves the technical problems of large volume, complex structure and low and difficult operation efficiency for small blast furnace areas in the technical field of iron and steel smelting industry.

Description

Technical Field

[0001] This utility model relates to the technical field of the iron and steel smelting industry, specifically to a small hydraulic tapping machine. Background Technology

[0002] In the iron and steel smelting industry, the taphole opener is a key piece of equipment for blast furnace tapping. Its main purpose is to mechanically break through the mud sleeve at the taphole during tapping, opening the taphole channel and allowing molten iron to flow out smoothly. The performance of this equipment directly affects tapping efficiency, tapping quality, and the stable operation of the blast furnace.

[0003] Traditional taphole openers are mostly large and heavy-duty pieces of equipment. Due to their large size and complex structure, the installation and commissioning process of traditional taphole openers is cumbersome, requiring significant manpower and time costs. They also have high requirements for installation sites, making them difficult to flexibly deploy in blast furnace areas with limited space. During operation, large taphole openers consume a lot of energy, and maintenance is difficult and costly, including frequent parts replacements and complex hydraulic system maintenance. This not only increases production costs for enterprises but also affects the continuous operating time of the equipment. Furthermore, traditional large taphole openers lack operational flexibility and cannot adapt to the taphole opening requirements under different operating conditions. For some special furnace conditions or small blast furnaces, their powerful output cannot be precisely controlled, easily leading to excessive damage to the taphole or low taphole opening efficiency. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a small hydraulic taphole machine that solves the technical problems of large size, complex structure, low operating efficiency and difficulty in small blast furnace areas in the steel smelting industry.

[0005] To achieve the above technical objectives, the present invention provides a small hydraulic taphole opening machine, comprising:

[0006] The system comprises an impact mechanism, a cylinder liner, and a piston; the impact mechanism includes a reversing valve; the reversing valve includes a reversing valve seat and a reversing valve core; the reversing valve core is built into the reversing valve seat; the reversing valve core and the reversing valve seat are sealed and fixedly connected; the reversing valve core is hollow; the reversing valve core has a valve core oil inlet and a valve core oil outlet; the reversing valve seat has a valve seat oil inlet and a valve seat oil outlet; the valve seat oil inlet communicates with the valve core oil inlet; the valve seat oil outlet communicates with the valve core oil outlet; the cylinder liner has a cylinder liner oil inlet and a cylinder liner oil outlet on its circumference; the valve core oil inlet communicates with the cylinder liner oil inlet; the valve core oil outlet communicates with the cylinder liner oil outlet.

[0007] The piston is built into the inner cavity of the cylinder liner; the piston and the cylinder liner are in a sealed sliding connection; a primary sealing ring, a secondary sealing ring and a tertiary sealing ring are provided between the piston and the cylinder liner; the primary sealing ring, the secondary sealing ring and the tertiary sealing ring are arranged sequentially along the length of the piston.

[0008] The piston is provided with a pressure ring on its peripheral wall; one end face of the pressure ring, the inner wall of the cylinder liner, and the outer peripheral wall of the piston form a pressure chamber; the pressure chamber is connected to the oil inlet and oil outlet of the cylinder liner.

[0009] It also includes a rotating mechanism, which includes a rotating drive source, a transmission assembly, and a rotating output shaft; the transmission assembly includes a transmission housing, a transmission shaft, a first transmission rotating body, and a second transmission rotating body; the transmission shaft is built into the cavity of the transmission housing; the transmission shaft is rotatably connected to the transmission housing; the first transmission rotating body is fixedly connected to the transmission shaft.

[0010] The second transmission rotating body is connected to the second transmission rotating body in a transmission manner; the second transmission rotating body is sleeved on the rotary output shaft; the second transmission rotating body is fixedly connected to the rotary output shaft.

[0011] One end of the rotary output shaft is provided with an output shaft drive tooth; the end of the piston near the rotary output shaft is provided with a piston drive tooth; the output shaft drive tooth meshes with the piston drive tooth; the output shaft of the rotary drive source is drivenly connected to the drive shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model include:

[0013] 1. Compact size and easy installation: The miniaturized design makes this taphole machine compact in structure and significantly reduces its footprint, allowing it to be flexibly adapted to various blast furnace areas with limited space, especially suitable for installation and use in small blast furnaces. The installation and commissioning process does not require complex large hoisting equipment or specialized technicians, effectively reducing installation difficulty and time costs, and significantly improving equipment deployment efficiency.

[0014] 2. Low energy consumption and low maintenance costs: Based on its miniaturized design, the power required for equipment operation is significantly reduced. While meeting the needs of taphole opening operations, it greatly reduces energy consumption and lowers enterprise operating costs. At the same time, the streamlined structure reduces the number of equipment parts, making maintenance more convenient and faster, reducing the frequency of parts replacement, and significantly lowering maintenance costs, further improving the equipment's economic efficiency.

[0015] 3. Flexible operation and strong adaptability: By optimizing the hydraulic system and transmission structure, this taphole opener can precisely control the drill bit speed, feed rate, and impact force according to different taphole conditions and blast furnace requirements, achieving refined taphole opening operations. Whether under conventional furnace conditions or special operating conditions, it can efficiently complete taphole opening tasks, greatly improving the equipment's versatility and applicability. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural schematic diagram of the small hydraulic taphole opening machine provided by this utility model;

[0017] Figure 2 This is a cross-sectional view of the hydraulic valve in the small hydraulic taphole machine provided by this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the hydraulic valve in the small hydraulic taphole machine provided by this utility model;

[0019] Figure 4 This is a front view structural diagram of the small hydraulic iron-opening machine provided by this utility model. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4This embodiment provides a small hydraulic tapping machine, including an impact mechanism 1, a cylinder liner 2, a piston 3, and a rotating mechanism 4.

[0024] Furthermore, the impact mechanism 1 includes a reversing valve 11. The reversing valve 11 includes a reversing valve seat 111 and a reversing valve core 112. The reversing valve core 112 is built into the reversing valve seat 111 and is sealed and fixedly connected to the reversing valve seat 111. The reversing valve core 112 is hollow and has a valve core oil inlet hole 112A and a valve core oil outlet hole 112B. The reversing valve seat 111 has a valve seat oil inlet hole 111A and a valve seat oil outlet hole 111B. The valve seat oil inlet hole 111A communicates with the valve core oil inlet hole 112A, and the valve seat oil outlet hole 111B communicates with the valve core oil outlet hole 112B. The cylinder liner 2 has a cylinder liner oil inlet hole and a cylinder liner oil outlet hole on its circumference. The valve core oil inlet hole 112A communicates with the cylinder liner oil inlet hole, and the valve core oil outlet hole 112B communicates with the cylinder liner oil outlet hole.

[0025] Furthermore, in this embodiment, the function of the reversing valve 11 is to control the direction of the oil circuit. When the iron tapping machine needs to perform an impact action, one end of the valve seat oil inlet hole 111A of the reversing valve 11 is connected to the hydraulic pump oil supply system to supply oil to the reversing valve 11.

[0026] Furthermore, the piston 3 is built into the inner cavity of the cylinder liner 2, and the piston 3 is slidably connected to the cylinder liner 2. A primary sealing ring 31, a secondary sealing ring 32, and a tertiary sealing ring 33 are provided between the piston 3 and the cylinder liner 2. The primary sealing ring 31, the secondary sealing ring 32, and the tertiary sealing ring 33 are arranged sequentially along the length of the piston 3.

[0027] Furthermore, the primary sealing ring 31, secondary sealing ring 32, and tertiary sealing ring 33 primarily function as multi-stage seals. Preferably, the primary sealing ring 31 can be a YX-type sealing ring made of polyurethane (CPU) material, which can withstand higher pressure and temperature, is suitable for hydraulic cylinders in engineering machinery and high-temperature, high-pressure working conditions, and can well adapt to the high-pressure hydraulic environment when the iron-opening machine is working; the secondary sealing ring 32 can be an O-ring made of nitrile rubber (NBR) as an auxiliary seal, which further prevents hydraulic oil leakage. At the same time, nitrile rubber has good oil resistance and a certain pressure resistance, which can meet the sealing requirements of general hydraulic systems; the tertiary sealing ring 33 can be a retaining ring made of polytetrafluoroethylene (PTFE), used in conjunction with the YX-type sealing ring and the O-ring to prevent the sealing ring from being squeezed out under high pressure, improve the reliability of the seal, and PTFE has good wear resistance and corrosion resistance.

[0028] Furthermore, a pressure ring 34 is provided on the peripheral wall of the piston 3. One end face of the pressure ring 34, the inner wall of the cylinder liner 2, and the outer peripheral wall of the piston 3 form a pressure chamber 3A. The pressure chamber 3A is connected to the oil inlet and oil outlet of the cylinder liner.

[0029] Furthermore, specifically, when hydraulic oil is introduced into the reversing valve 11, it enters the inner cavity of the cylinder liner 2 through the hydraulic oil passage and the cylinder liner inlet. The hydraulic oil then enters the pressure chamber 3A. Under pressure, the hydraulic oil generates a thrust on the pressure ring 34. When the hydraulic oil pressure reaches a level sufficient to overcome all resistance of the piston 3, it pushes the piston 3 to move linearly relative to the cylinder liner 2. When the piston 3 moves linearly, it generates an impact force on the rotating output shaft 43, thus forming the impact force of the iron-opening machine. When the valve seat outlet port 111B of the reversing valve seat 111 opens, the hydraulic oil flows back into the hydraulic pump system, the pressure in the pressure chamber 3A decreases, and the impact force of the iron-opening machine disappears.

[0030] Furthermore, the rotating mechanism 4 includes a rotating drive source 41, a transmission assembly 42, and a rotating output shaft 43.

[0031] Furthermore, the transmission assembly 42 includes a transmission housing 421, a transmission shaft 422, a first transmission rotating body 423, and a second transmission rotating body 424. The transmission shaft 422 is housed within the cavity of the transmission housing 421. The transmission shaft 422 is rotatably connected to the transmission housing 421, and the first transmission rotating body 423 is fixedly connected to the transmission shaft 422.

[0032] Furthermore, the second transmission rotary body 424 is connected to the first transmission rotary body 423 in a transmission connection, the second transmission rotary body 424 is sleeved on the rotary output shaft 43, and the second transmission rotary body 424 is fixedly connected to the rotary output shaft 43.

[0033] Furthermore, when the rotary drive source 41 is working, the output shaft of the rotary drive source 41 drives the transmission shaft 422 to rotate, and the transmission shaft 422 drives the first transmission rotary body 423 to rotate. Since the first transmission rotary body 423 is meshed and driven to the second rotary body 424, the second rotary body 424 is driven to rotate, thereby driving the rotary output shaft 43 to rotate.

[0034] Furthermore, the rotary output shaft 43 is built into the inner cavity of the fixed housing 44, and a first rotary sealing ring 45 and a second rotary sealing ring 46 are provided between the rotary output shaft 43 and the fixed housing 44. A bearing is also provided to support the rotation.

[0035] Furthermore, preferably, the first rotary seal ring 45 is a V-shaped seal ring made of silicone rubber (SIL). Silicone rubber has good heat resistance, cold resistance and aging resistance. The structure of the V-shaped seal ring allows it to have good mobility and adaptability on the rotating shaft, which can compensate for large tolerances and angular deviations, and prevent lubricating oil leakage and the intrusion of external impurities. The second rotary seal ring 46 is an oil seal made of hydrogenated nitrile butadiene rubber (HNBR). HNBR has good corrosion resistance, tear resistance and compression deformation resistance, and can maintain good sealing performance during rotation, making it suitable for environments with certain temperature and pressure changes.

[0036] Furthermore, one end of the rotary output shaft 43 is provided with an output shaft drive tooth, and the piston 3 is provided with a piston drive tooth at one end near the rotary output shaft 43. The output shaft drive tooth meshes with the piston drive tooth, and the output shaft of the rotary drive source 41 is drivenly connected to the drive shaft 422.

[0037] Furthermore, preferably, both the first transmission rotating body 423 and the second transmission rotating body 424 are selected as gears. Gear transmission in this embodiment has the following advantages: 1. High transmission efficiency: During gear transmission, the friction loss between the meshing surfaces is relatively small, enabling efficient transmission of power from the drive shaft to the driven shaft. The transmission efficiency is generally 95%-99%. This means that when the iron-opening machine is working, the energy provided by the power source can be utilized more effectively, reducing energy loss and lowering operating costs; 2. Stable transmission ratio: The transmission ratio of a gear transmission depends on the number of teeth on the gears. As long as the manufacturing and installation accuracy of the gears are guaranteed, the transmission ratio can remain stable. In an iron-opening machine, a stable transmission ratio ensures that parameters such as the drill bit's rotational speed and feed rate remain stable, thereby guaranteeing the quality and efficiency of iron-opening; 3. Reliable operation and long service life: Gear transmission has a compact structure, and the gear materials typically have high strength and wear resistance, enabling them to withstand large loads. Under normal use and maintenance conditions, gear transmission can operate stably for a long time, resulting in a long service life. This is crucial for equipment like iron-cutting machines that require frequent operation, as it reduces the frequency of maintenance and replacement, increasing equipment utilization. 4. High precision: Modern gear processing technology ensures high manufacturing precision of gears, resulting in high motion and transmission accuracy in gear drives. In iron-cutting machines, high-precision gear transmission guarantees the accuracy of the drill bit's movement, enabling accurate positioning and drilling, thus improving the quality and precision of iron-cutting.

[0038] Furthermore, the rotary drive source 41 drives the rotary output shaft 43 to rotate. Based on the rotation of the rotary output shaft 43, the reversing valve 11 pumps oil to the cylinder liner through the oil pumping system, thereby enabling the piston 3 to drive the rotary output shaft 43 to make linear motion and generate impact force.

[0039] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A small hydraulic taphole opener, characterized in that, include: The system comprises an impact mechanism, a cylinder liner, and a piston; the impact mechanism includes a reversing valve; the reversing valve includes a reversing valve seat and a reversing valve core; the reversing valve core is built into the reversing valve seat; the reversing valve core and the reversing valve seat are sealed and fixedly connected; the reversing valve core is hollow; the reversing valve core has a valve core oil inlet and a valve core oil outlet; the reversing valve seat has a valve seat oil inlet and a valve seat oil outlet; the valve seat oil inlet communicates with the valve core oil inlet; the valve seat oil outlet communicates with the valve core oil outlet; the cylinder liner has a cylinder liner oil inlet and a cylinder liner oil outlet on its circumference; the valve core oil inlet communicates with the cylinder liner oil inlet; the valve core oil outlet communicates with the cylinder liner oil outlet.

2. The small hydraulic taphole opener according to claim 1, characterized in that, The piston is built into the inner cavity of the cylinder liner; the piston and the cylinder liner are in a sealed sliding connection; a primary sealing ring, a secondary sealing ring and a tertiary sealing ring are provided between the piston and the cylinder liner; the primary sealing ring, the secondary sealing ring and the tertiary sealing ring are arranged sequentially along the length of the piston.

3. The small hydraulic taphole machine according to claim 2, characterized in that, The piston is provided with a pressure ring on its peripheral wall; one end face of the pressure ring, the inner wall of the cylinder liner, and the outer peripheral wall of the piston form a pressure chamber; the pressure chamber is connected to the oil inlet and oil outlet of the cylinder liner.

4. The small hydraulic taphole machine according to claim 3, characterized in that, It also includes a rotating mechanism; the rotating mechanism includes a rotating drive source, a transmission assembly, and a rotating output shaft; the transmission assembly includes a transmission housing, a transmission shaft, a first transmission rotating body, and a second transmission rotating body; the transmission shaft is built into the cavity of the transmission housing; the transmission shaft is rotatably connected to the transmission housing; the first transmission rotating body is fixedly connected to the transmission shaft.

5. The small hydraulic taphole opener according to claim 4, characterized in that, The second transmission rotating body is connected to the second transmission rotating body in a transmission manner; the second transmission rotating body is sleeved on the rotary output shaft; the second transmission rotating body is fixedly connected to the rotary output shaft.

6. The small hydraulic taphole machine according to claim 5, characterized in that, One end of the rotary output shaft is provided with an output shaft drive tooth; the end of the piston near the rotary output shaft is provided with a piston drive tooth; the output shaft drive tooth meshes with the piston drive tooth; the output shaft of the rotary drive source is drivenly connected to the drive shaft.

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