A stamp for preparing a uniform density coal cake

Abstract

The application discloses a tamping hammer for preparing uniform-density coal cake, which comprises a tamping rod and a tamping hammer head, and the bottom of the tamping rod is provided with an angle-adjustable tamping hammer head; and the tamping hammer head is internally provided with a high-pressure air jet device. Compared with the prior art, the angle-adjustable tamping hammer head is designed aiming at the wave-shaped situation of the falling and piling of coal in a tamping machine, and in the process of tamping the coal cake, the power rod driver at the top end of the tamping rod can drive the power to move upward or downward, and then the angle of the tamping hammer head is deflected, so that the coal at the wave-shaped 'peak' is tamped, and the uniform-density coal cake can be prepared by repeatedly tamping at multiple angles; in addition, a row of air force nozzles is horizontally arranged on the side wall of the tamping hammer head, and in the tamping process, the coal on the side of the tamping hammer head can be further blown off and filled into the position directly below the tamping hammer head, so that the density of the coal cake is more uniform and the strength is higher in the next tamping.

Description

Technical Field

[0001] This invention relates to the field of tamping machines for coal cakes, and in particular to a tamping hammer for preparing coal cakes of uniform density. Background Technology

[0002] The quality of tamped coal cakes directly affects coke oven production. Coking plants require tamping equipment to produce coal cakes with uniform density, high density, and high strength. The increasing scale and intelligence of tamping equipment also necessitates addressing issues such as low and uneven coal cake density, which easily leads to cake collapse and coal loss, and the difficulty of effectively controlling coal cake quality with current tamping machines. Therefore, further improvements to tamping equipment are needed. In short, developing high-performance tamping equipment has become a crucial task for tamping equipment manufacturers.

[0003] To produce coal cakes with uniform density, high density, and high strength, every step of the coal cake making process must be carefully managed. During coal cake making, variations in the feed coal mix and moisture content lead to differences in the viscosity of the raw coal. This, combined with the impact of the moving tamping hammer during descent, results in varying coal heights at different points within the coal box. Detailed analysis of the falling forces and trajectory of the coal within the tamping machine reveals that as the tamping hammer moves up and down, the coal accumulates in a wave-like pattern with significant height differences. This variation results in coal cakes with uneven density and low strength.

[0004] Further analysis suggests that the different heights of the coal falling into the coal box, resulting in a wave-like pattern, lead to three major problems: (1) The coal cake has uneven density and quality, and is distributed in a strip-like pattern, with low density at the troughs and high density at the peaks; (2) The low-density coal cake at the troughs has low strength and is prone to collapse; (3) The uneven distribution of coal results in inconsistent force on the tamping surface of the tamping hammer, which easily causes deformation and damage to the tamping rod; (4) Segregation of coal particles of different sizes leads to uneven coal quality, which seriously affects the quality of coke.

[0005] Therefore, there is an urgent need to develop a tamping hammer for preparing uniform density coal cakes. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a tamping hammer for preparing uniform density coal cakes.

[0007] To achieve the above objectives, the present invention is implemented according to the following technical solution: A tamping hammer for preparing uniform density coal cakes includes a tamping rod and a tamping hammer head, wherein the bottom of the tamping rod is provided with an adjustable angle tamping hammer head.

[0008] Specifically, the tamping rod has a hollow structure, and the tamping hammer head is trapezoidal. Several guide sleeves are fixed inside the tamping rod from top to bottom. A power rod is installed through the guide sleeves, and the top of the power rod extends to the top of the tamping rod and is connected to a power rod driver for driving the power rod up and down. A rotating shaft is rotatably installed on one side wall at the bottom of the tamping rod. L-shaped coal leveling rods are rotatably connected to the front and rear ends of the top center of the tamping hammer head. A movable plug is vertically installed at the top center of the tamping hammer head. The top of the movable plug is fixed to the sliding groove at the bottom of the tamping rod and is fixedly connected to the end of the power rod. The ends of the two L-shaped coal leveling rods are rotatably installed on the rotating shaft. An angle-adjusting coal leveling plate is fixed on the rotating shaft, and the end of the angle-adjusting coal leveling plate is inclined downwards along one side of the tamping hammer head.

[0009] Furthermore, the tamping hammer head is equipped with a high-pressure air jet device.

[0010] Specifically, the high-pressure air jet device includes a high-pressure air chamber disposed inside the tamping hammer head, a pneumatic nozzle horizontally disposed on one side wall of the tamping hammer head, the rear end of the pneumatic nozzle being connected to the high-pressure air chamber, a high-pressure air pipe disposed inside the tamping rod, the end of the high-pressure air pipe penetrating the top of the tamping hammer head and being connected to the top of the high-pressure air chamber, and the top end of the high-pressure air pipe extending to the top of the tamping rod and then connected to a high-pressure air source.

[0011] Furthermore, the high-pressure gas source includes a high-pressure gas tank, which is connected to the top of a high-pressure gas pipe via a high-pressure gas hose, and the high-pressure gas hose is equipped with a valve.

[0012] Compared with existing technologies, this invention addresses the issue of wavy coal accumulation within the tamping machine by designing an adjustable-angle tamping hammer. During the tamping process, the power rod at the top of the tamping rod drives the hammer upwards or downwards, thereby deflecting the hammer and tamping the coal at the "crests" of the wavy shape. Repeated tamping at multiple angles yields a uniformly dense coal cake. Furthermore, a horizontal exhaust nozzle is provided on one side wall of the tamping hammer, which further blows coal from one side of the hammer into the area directly below it during tamping, resulting in a more uniform coal cake density and higher strength during subsequent tamping. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a tamping hammer according to one embodiment of the present invention.

[0014] Figure 2 This is a schematic diagram of the tamping hammer according to another embodiment of the present invention. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. The specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.

[0016] Example 1

[0017] like Figure 1 As shown, a tamping hammer for preparing uniform density coal cake includes a tamping rod 9 and a tamping hammer head 10, wherein the bottom of the tamping rod 9 is provided with an adjustable angle tamping hammer head 10.

[0018] Specifically, such as Figure 1 As shown, the tamping rod 9 has a hollow structure, and the tamping hammer head 10 is a trapezoidal body. Several guide sleeves 7 are fixed inside the tamping rod 9 from top to bottom. A power rod 6 is provided through the guide sleeves 7. The top of the power rod 6 extends to the top of the tamping rod 9 and is connected to a power rod driver 8 for driving the power rod 6 to move up and down. A rotating shaft 2 is rotatably installed on the outer side wall of the bottom of the tamping rod 9. The front and rear end faces of the top center of the tamping hammer head 10 are rotatably connected to L-shaped coal leveling rods 3. A movable plug 4 is vertically set at the top center of the tamping hammer head 10. The top of the movable plug 4 passes through and is fixed to the sliding groove 5 at the bottom of the tamping rod 9 and is fixedly connected to the end of the power rod 6. The ends of the two L-shaped coal leveling rods 3 are rotatably installed on the rotating shaft 2. An angle-adjusting coal leveling plate 1 is fixed on the rotating shaft 2. The end of the angle-adjusting coal leveling plate 1 is arranged inclined downward along one side of the tamping hammer head 10.

[0019] During the tamping process, as coal continuously falls into the coal box, the tamping hammer in this embodiment is repeatedly lifted to a certain height by the hammer lifting mechanism of the tamping machine, and then released to allow it to fall freely, thus repeatedly tamping the coal falling into the coal box. After tamping several times, the power rod driver at the top of the tamping rod drives the power upward or downward, thereby causing the angle of the tamping hammer head to deflect, thereby tamping the coal at the wavy "crest". At the same time, it can also repeatedly tamp the coal accumulated on the four sides of the tamping hammer head 10 due to tamping. By repeating this process, a uniform density coal cake can be obtained.

[0020] Example 2

[0021] The difference from Embodiment 1 is that the tamping hammer head 10 is equipped with a high-pressure air jet device; otherwise, it is the same as Embodiment 1. Figure 2As shown, the high-pressure air jet device includes a high-pressure air chamber 17 disposed inside the tamping hammer head 10, and a pneumatic nozzle 18 horizontally disposed on one side wall of the tamping hammer head 10. The rear end of the pneumatic nozzle 18 is connected to the high-pressure air chamber 17. A high-pressure air pipe 15 is disposed inside the tamping rod 9. The end of the high-pressure air pipe 15 passes through the top of the tamping hammer head 10 and is connected to the top of the high-pressure air chamber 17. The top end of the high-pressure air pipe 15 extends to the top of the tamping rod 9 and is connected to a high-pressure air source.

[0022] In some embodiments, the high-pressure gas source includes a high-pressure gas tank 11, which is connected to the top of a high-pressure gas pipe 15 via a high-pressure gas hose 13. The high-pressure gas hose 13 is provided with a valve 12. Opening the valve 12 allows high-pressure gas to be introduced into the high-pressure gas pipe 15, and then the high-pressure gas is ejected as a row of high-pressure gas flow through a row of exhaust nozzles 18 at the bottom of the tamping hammer head 10.

[0023] A horizontal exhaust nozzle is provided on one side wall of the tamping hammer head. During the tamping process, it can further blow down the coal material that has accumulated on one side of the tamping hammer head 10 and fill it directly below the tamping hammer head 10, so that the coal cake density is more uniform and the strength is higher during the next tamping.

[0024] The technical solutions of the present invention are not limited to the specific embodiments described above. Any technical modifications made in accordance with the technical solutions of the present invention fall within the protection scope of the present invention.

Claims

1. A stamp for preparing a uniform density coal cake, comprising a stamp rod and a stamp head, characterized in that: The bottom of the tamping rod is equipped with an adjustable tamping hammer head; The tamping rod has a hollow structure, and the tamping hammer head is trapezoidal. Several guide sleeves are fixed inside the tamping rod from top to bottom. A power rod is installed through the guide sleeves. The top of the power rod extends to the top of the tamping rod and is connected to a power rod driver for driving the power rod to move up and down. A rotating shaft is rotatably installed on the outer side wall of the bottom of the tamping rod. The front and rear end faces of the top center of the tamping hammer head are rotatably connected to L-shaped coal leveling rods. A movable plug is vertically installed at the top center of the tamping hammer head. The top of the movable plug is fixed through a sliding groove at the bottom of the tamping rod and is fixedly connected to the end of the power rod. The ends of the two L-shaped coal leveling rods are rotatably installed on the rotating shaft. An angle-adjusting coal leveling plate is fixed on the rotating shaft. The end of the angle-adjusting coal leveling plate is inclined downward along one side of the tamping hammer head. The tamping hammer head is equipped with a high-pressure air jet device. The high-pressure air jet device includes a high-pressure air chamber disposed inside the tamping hammer head, and a pneumatic nozzle horizontally disposed on one side wall of the tamping hammer head. The rear end of the pneumatic nozzle is connected to the high-pressure air chamber. A high-pressure air pipe is disposed inside the tamping rod. The end of the high-pressure air pipe passes through the top of the tamping hammer head and is connected to the top of the high-pressure air chamber. The top end of the high-pressure air pipe extends to the top of the tamping rod and is connected to a high-pressure air source.

2. A stamp used for preparing a uniform density coal cake according to claim 1, characterized in that: The high-pressure air source includes a high-pressure air tank, which is connected to the top of a high-pressure air pipe via a high-pressure air hose, and the high-pressure air hose is equipped with a valve.

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