Online dredging and cleaning mechanism for grate trolley

Abstract

The utility model relates to the technical field of sintering machine corollary equipment, and particularly discloses an online dredging and cleaning mechanism for a grate trolley, which comprises a telescopic power part fixedly arranged in a belt type sintering machine, the lower end of the telescopic power part is connected with a lifting frame, and the lifting frame is connected with a strip plate capable of moving up and down through a spring and a guide sliding rod. The lower surface of the batten is fixedly connected with a row of sawtooth strips which are vertically aligned with grate holes in the grate trolley, a rotating rod is rotationally arranged in the lifting frame located above the batten, a cam which abuts against the batten is arranged on the rotating rod, and one end of the rotating rod is connected with a power device for achieving rotation; the dredging and cleaning mechanism can powerfully clean coal gangue sintering materials which are blocked in grate holes and are difficult to clean, can be effectively suitable for various blocking sintering materials with high bonding performance, and ensures the material layer ventilation effect in the continuous operation process of the belt type sintering machine.

Description

Technical Field

[0001] This utility model relates to the technical field of sintering machine supporting equipment, and specifically discloses an online dredging and cleaning mechanism for a grate trolley. Background Technology

[0002] Decarburization sintering of coal gangue is an important means of its resource utilization. The existing equipment for decarburization sintering of coal gangue mainly includes vertical kilns and belt sintering machines. Compared with vertical kilns, belt sintering machines have a larger processing capacity and higher efficiency and are widely used in the market.

[0003] During operation, the belt sintering machine uses a conveyor chain to move the grate trolley along the track box in a cyclical manner, passing through the feeding section, ignition section, sintering section, and cooling section. After the material cools down, a single hammer crusher removes the sintered material from the grate trolley. The grate trolley, after removing the sintered material, then moves back to the feeding section along the return section, repeating the above actions. However, the single hammer crusher cannot completely clear the material from the grate holes at the bottom of the grate trolley. If the grate holes at the bottom of the grate trolley are blocked by sintered material, it will affect the ventilation effect during subsequent material calcination. Therefore, the grate holes must be cleared and cleaned before the grate trolley is reloaded.

[0004] Utility model patent application number 202122239311.1 discloses a trolley grate cleaning device, including a support, a hoisting mechanism, a clearing rod, and a vibration mechanism. The support is erected above the trolley, the hoisting mechanism is mounted on the support, the clearing rod is vertically positioned and installed at the bottom of the hoisting mechanism, and the vibration mechanism is mounted on the clearing rod and drives it to vibrate up and down. This patented trolley grate cleaning device utilizes the hoisting mechanism to lower the clearing rod, allowing it to penetrate the sintered material blocking the grate holes under gravity. Then, the vibration mechanism causes the clearing rod to vibrate up and down to accelerate the clearing of the sintered material. However, coal gangue sintered material has strong adhesion in the grate holes, and the clearing rod's own weight alone is insufficient to pierce it. Similarly, because the sintered material is bonded together, the vibration mechanism alone cannot remove the highly bonded sintered material by moving the clearing rod up and down. Therefore, in view of the shortcomings of existing grate cleaning equipment for belt sintering machines, this application proposes an online dredging and cleaning mechanism for grate trolleys that can effectively solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide an online dredging and cleaning mechanism for a grate trolley, in order to solve the problem of difficulty in cleaning the sintering material blocking the grate holes in the grate trolley after coal gangue decarburization and sintering.

[0006] This utility model is achieved through the following technical solution:

[0007] A grate trolley online unblocking and cleaning mechanism includes a telescopic power component fixedly installed in a belt sintering machine. The lower end of the telescopic power component is connected to a lifting frame. The lifting frame is connected to a vertically movable strip plate via a spring and a guide slide rod. A row of serrated strips aligned vertically with the grate holes on the grate trolley is fixedly connected to the lower surface of the strip plate. A rotating rod is rotatably installed in the lifting frame above the strip plate. A cam is installed on the rotating rod to abut against the strip plate. One end of the rotating rod is connected to a power device to realize rotation.

[0008] As a further feature of the above scheme, a receiving hopper is also provided directly below the lifting frame. The lower end of the receiving hopper is connected to a conveying cylinder, and an auger blade is provided in the conveying cylinder. One end of the auger blade is connected to an auger motor.

[0009] As a further feature of the above scheme, an exhaust port is provided on the side wall of the receiving hopper, and an inclined baffle is connected to the inner wall of the receiving hopper above the exhaust port. The outer end of the exhaust port is connected to a negative pressure air duct, and the end of the negative pressure air duct is separately connected to an exhaust fan or connected to the negative pressure system pipeline in the belt sintering machine.

[0010] As a further feature of the above scheme, the track box of the belt sintering machine is provided with a cross frame, the telescopic power component is provided on the cross frame, the inner wall of the track box is provided with a vertical slide rail, and the side of the lifting frame is provided with a sliding groove that interacts with the vertical slide rail.

[0011] As a further feature of the above solution, the guide slide rod is disposed at both ends of the lifting frame, and both ends of the strip are provided with guide holes that interact with the guide slide rod. The spring is connected between the strip and the lifting frame.

[0012] As a further feature of the above solution, the bottom of the serrated bar is pointed, and the thickness of the serrated bar is 6-10 mm less than the width of the grate holes on the grate trolley.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The dredging and cleaning mechanism disclosed in this utility model, when processing the grate holes on the grate trolley, first uses telescopic power to press down the lifting frame, and then uses a row of saw teeth to pierce the sintered material adhering to the grate holes. Then, the combined action of the power device and the spring causes the saw teeth to move up and down reciprocally, while the grate trolley moves slowly horizontally. Thus, under the action of the saw teeth, the sintered material in the grate holes can be effectively sawed and broken. Compared with the existing method of using the gravity of the dredging rod to pierce, it can powerfully remove the coal gangue sintered material that is difficult to clean from the grate holes. It can be effectively applied to various sintered materials with strong adhesion, ensuring the ventilation effect of the material layer during the continuous operation of the belt sintering machine.

[0015] This invention further includes a receiving hopper to receive the sawn and crushed material blocks. Simultaneously, it is connected to a negative pressure device through the side wall, creating a negative pressure state inside. This allows for the suction of dust generated during the sawing process, preventing dust dispersion and contamination of the sintering machine's internal walls. Furthermore, the received material blocks and dust can be directionally conveyed out by an auger, effectively clearing and directionally discharging the blocked sintering material, ensuring the stable operation of the entire sintering machine. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall planar structure of the belt sintering machine in this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the track box, grate trolley, and dredging and cleaning mechanism in this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the dredging and cleaning mechanism of this utility model when it acts on the grate trolley;

[0020] Figure 4 This is a three-dimensional cross-sectional structural diagram of the receiving hopper and conveying cylinder in this utility model. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-4 This application will be described in detail with reference to the embodiments. Example 1

[0023] Example 1 discloses an online dredging and cleaning mechanism for a grate trolley. The following description is based on the entire belt sintering machine 100. The grate trolley 1 moves cyclically along the track box 2 under the action of the transmission mechanism. Above it, from right to left, are the feeding section, the ignition section and the calcination section. At the right end of the belt sintering machine 100, the material is unloaded by a single hammer crusher. Then, a dredging and cleaning mechanism 3 is set in the track box 2 where the grate trolley 1 moves along the lower return section.

[0024] Reference Appendix Figure 2 and attached Figure 3 The dredging and cleaning mechanism 3 includes a crossbeam 301 fixed in the track box 2. A telescopic power component 302 is installed on the crossbeam 301. The telescopic power component 302 can be a pneumatic cylinder or a hydraulic cylinder. A lifting frame 303 is connected to the lower end of the telescopic power component 302. The lifting frame 303 has sliding grooves on both sides, and a vertical slide rail 304 that interacts with the sliding grooves is provided in the track box, so that the lifting frame 303 can move stably up and down under the action of the telescopic power component 302.

[0025] A strip plate 305 is provided in the lifting frame 303. Multiple serrated strips 306 are welded at intervals to the lower surface of the strip plate 305. The bottom of each serrated strip 306 is pointed. A through hole for the serrated strips 306 to pass through is also provided at the lower end of the lifting frame 303. The position of each serrated strip 306 is aligned vertically with the grate hole on the grate trolley 1. The thickness of the serrated strip 306 is slightly less than the width of the grate hole by 6-10 mm, ensuring that the serrated strip 306 has sufficient thickness to guarantee its mechanical properties and can easily pierce the sintered material in the grate hole and penetrate it. Guide holes are provided at both ends of the strip plate 305. Guide rods 307 that interact with the guide holes are provided at both ends of the lifting frame 303. A spring 308 is connected between the strip plate 305 and the lifting frame 303.

[0026] A rotating rod 309, parallel to the strip 305, is rotatably mounted in the lifting frame 303 above the strip 305. A cam 310 is located at the middle position of the rotating rod 309, and the lower end of the cam 310 abuts against the upper surface of the strip 305. A power device 311 for driving the rotating rod 309 to rotate is also installed in the lifting frame 303. The power device 311 consists of a motor and a pair of meshing gears, which are respectively mounted on the motor shaft and the rotating rod 309. Under the combined action of the power device 311 and the spring 308, the strip 305 can move up and down reciprocally, thereby causing a row of sawtooth strips 306 to move up and down in the grate holes of the grate trolley 1, thereby sawing and crushing the sintered material in the grate holes.

[0027] Reference Appendix Figure 2 and attached Figure 4The dredging and cleaning mechanism 3 also includes a receiving hopper 312 located directly below the lifting frame 303. The lower discharge end of the receiving hopper 312 is connected to a conveying cylinder 313 that extends horizontally out of the track box 2. An auger blade 314 is installed in the conveying cylinder 313, and one end of the auger blade 314 is connected to an auger motor 315. The design of the conveying cylinder 313 and the auger blade 314 not only conveys the sawn and crushed sintered material, but also plays a corresponding material sealing role.

[0028] In addition, an exhaust port 316 is provided on one side wall of the receiving hopper 312. An inclined baffle 317 is provided on the inner wall of the receiving hopper 312 above the exhaust port 316. Then, a negative pressure air duct 318 is connected to the outer end of the exhaust port 316. The end of the negative pressure air duct 318 can be connected to an exhaust fan alone or connected to the negative pressure system pipeline in the entire belt sintering machine.

[0029] The specific working process and principle of the online dredging and cleaning mechanism of the grate trolley disclosed in Embodiment 1 are as follows:

[0030] After being unloaded by a single hammer crusher, the grate trolley 1 is moved to be aligned vertically with the dredging and cleaning mechanism 3. Then, the telescopic power component 302 begins to extend and pushes the lifting frame 303 vertically downward until a row of serrated bars 306 passes through the grate holes on the grate trolley and punctures the sintered material.

[0031] Next, the power unit 311 is activated, which, under the combined action of the power unit 311 and the spring 308, enables the strip 305 to move up and down reciprocally. At the same time, the grate trolley 1 continues to move horizontally at a certain speed, so that a row of serrated blades 306 moves up and down in the grate hole of the grate trolley 1, thereby sawing and crushing all the sintered material in the grate hole. Then, the power unit 311 is turned off and the telescopic power component 302 is controlled to retract, raising the lifting frame 303 to the initial height. A row of serrated blades 306 rises from the grate hole, allowing the grate trolley 1 to be moved away smoothly without obstruction after the dredging and cleaning is completed.

[0032] Meanwhile, as the sintered material in the grate holes is continuously sawed and crushed by a row of saw blades 306, the negative pressure in the receiving hopper 312 causes all the sawed material blocks and dust to enter the receiving hopper 312. Then, the conveying cylinder 313, the auger blade 314 and the auger motor 315 work together to send them out of the track box 2 for fixed-point collection.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grate trolley online dredging and cleaning mechanism, characterized in that, The device includes a telescopic power component fixedly installed in a belt sintering machine. The lower end of the telescopic power component is connected to a lifting frame. The lifting frame is connected to a vertically movable strip plate via a spring and a guide slide rod. A row of serrated strips aligned vertically with the grate holes on the grate trolley is fixedly connected to the lower surface of the strip plate. A rotating rod is rotatably installed in the lifting frame above the strip plate. A cam is installed on the rotating rod to abut against the strip plate. One end of the rotating rod is connected to a power device to achieve rotation.

2. The online dredging and cleaning mechanism for the grate trolley according to claim 1, characterized in that, It also includes a receiving hopper located directly below the lifting frame, with a conveying cylinder connected to the lower end of the receiving hopper. An auger blade is installed in the conveying cylinder, and an auger motor is connected to one end of the auger blade.

3. The online dredging and cleaning mechanism for the grate trolley according to claim 2, characterized in that, An exhaust port is provided on the side wall of the receiving hopper. An inclined baffle is connected to the inner wall of the receiving hopper above the exhaust port. A negative pressure air duct is connected to the outer end of the exhaust port. The end of the negative pressure air duct is connected to an exhaust fan or to the negative pressure system pipeline in the belt sintering machine.

4. The online dredging and cleaning mechanism for the grate trolley according to claim 1, characterized in that, The belt sintering machine has a crossbeam in the track box, the telescopic power component is mounted on the crossbeam, the inner wall of the track box is provided with a vertical slide rail, and the side of the lifting frame is provided with a sliding groove that interacts with the vertical slide rail.

5. The online dredging and cleaning mechanism for the grate trolley according to claim 1, characterized in that, The guide slide rods are installed at both ends of the lifting frame, and guide holes that interact with the guide slide rods are opened at both ends of the strip. The spring is connected between the strip and the lifting frame.

6. The online dredging and cleaning mechanism for the grate trolley according to claim 1, characterized in that, The bottom of the serrated bar is pointed, and the thickness of the serrated bar is 6-10 mm less than the width of the grate hole on the grate trolley.

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