A dry coal feeder

Abstract

The present invention discloses a dry pulverized coal feeding machine, which includes a hydraulic crawler walking platform. A hydraulic power mechanism, a water ring vacuum mechanism and a hydraulic slewing mechanism are arranged on the upper part of the hydraulic crawler walking platform. The hydraulic power mechanism provides power for the hydraulic crawler walking platform, the water ring vacuum mechanism and the hydraulic slewing mechanism. A dry pulverized coal feeding mechanism is arranged on the hydraulic slewing mechanism, and the water ring vacuum mechanism provides a negative pressure source for the dry pulverized coal feeding mechanism. By adopting the dry pulverized coal feeding machine of the present invention, on the one hand, the hydraulic power mechanism provides walking and working power as a whole and uniformly, with a simple power configuration and convenient maintenance; on the other hand, vacuum negative pressure feeding is adopted, which has the advantages of high feeding efficiency, small installation workload and simple operation.

Description

Technical Field

[0001] The present invention relates to the technical field of dry pulverized coal feeding, and particularly relates to a dry pulverized coal feeder. Background Art

[0002] In the processes of coal mine mining, transportation, conveying, and processing, the phenomenon of dry pulverized coal scattering inevitably occurs. Especially for the open belt conveying method during the conveying of coal blocks, more dry pulverized coal will scatter. This not only causes waste of resources but also brings serious dust hazards to the working environment. To solve this problem, currently, a wetting device is usually used. By using an atomized high-pressure water jet and then manually shoveling and sweeping to collect the wetted scattered pulverized coal, this method has low efficiency, the equipment is prone to blockage, the working environment becomes worse after the dry pulverized coal and water mist are mixed and ejected, and the method of manual shoveling and sweeping has the problems of high labor intensity and low working efficiency.

[0003] Therefore, a new dry pulverized coal feeding structure is needed. Summary of the Invention

[0004] In view of this, the present invention provides a dry pulverized coal feeder. On the one hand, a hydraulic power mechanism is adopted to provide the walking and working power for the whole unit uniformly, with a simple power configuration and convenient for maintenance. On the other hand, vacuum negative pressure feeding is adopted, which has the advantages of high feeding efficiency, small installation workload, and simple operation.

[0005] To achieve the above object, the present invention provides a dry pulverized coal feeder, including a hydraulic crawler walking platform. A hydraulic power mechanism, a water ring vacuum mechanism, and a hydraulic slewing mechanism are arranged on the upper part of the hydraulic crawler walking platform. The hydraulic power mechanism provides power for the hydraulic crawler walking platform, the water ring vacuum mechanism, and the hydraulic slewing mechanism. A dry pulverized coal feeding mechanism is arranged on the hydraulic slewing mechanism, and the water ring vacuum mechanism provides a negative pressure source for the dry pulverized coal feeding mechanism.

[0006] Further, the dry pulverized coal feeding mechanism includes a screw conveyor inclinedly arranged on the hydraulic slewing mechanism. The screw of the screw conveyor is driven by a first hydraulic motor, and the first hydraulic motor is supplied with high-pressure oil by the hydraulic power mechanism. A feeder and a vacuum feeding hopper are sequentially connected and communicated from bottom to top at the feeding port of the screw conveyor. A material suction port is arranged on the side of the vacuum feeding hopper, and an air suction port is arranged on the top of the vacuum feeding hopper. The air suction port is connected and communicated with the air suction end of the water ring vacuum mechanism through a pipeline.

[0007] Further, the screw conveyor is connected to the hydraulic slewing mechanism through an angle adjustment mechanism. The angle adjustment mechanism includes a mounting seat provided on the hydraulic slewing mechanism. The feeding end of the screw conveyor is rotatably arranged on the mounting seat. The middle part of the screw conveyor is hinged to the upper end of a telescopic rod, and the lower end of the telescopic rod is hinged to a first ear plate provided on the hydraulic slewing mechanism.

[0008] Further, a first fixing seat is arranged at the bottom of the feeding end of the screw conveyor, and the lower part of the first fixing seat is hinged to the inner side of the mounting seat.

[0009] Further, a second fixing seat is arranged in the middle of the screw conveyor, a second ear plate is arranged at the bottom of the second fixing seat, and the upper end of the telescopic rod is hinged to the second ear plate.

[0010] Further, the hydraulic power mechanism includes a hydraulic pump and a hydraulic oil tank. The hydraulic oil tank provides hydraulic oil for the hydraulic pump. The hydraulic pump provides power to the hydraulic crawler walking platform, the water ring vacuum mechanism and the hydraulic slewing mechanism through a hydraulic control valve.

[0011] Further, the water ring vacuum mechanism includes a water ring vacuum pump, a water tank and a plunger pump arranged on the hydraulic crawler walking platform. The water tank provides working fluid for the water ring vacuum pump. The plunger pump is used to convert and input the power of the hydraulic power mechanism into the water ring vacuum pump. The suction end of the water ring vacuum pump is communicated with the suction port through a pipeline.

[0012] Further, the hydraulic slewing mechanism includes an external gear slewing bearing and a second hydraulic motor arranged on the hydraulic crawler walking platform. The second hydraulic motor is provided with high-pressure oil by the hydraulic power mechanism. The output end of the second hydraulic motor is connected to a worm meshing with the external gear ring of the external gear slewing bearing. A bearing platform is arranged at the top of the inner ring of the external gear slewing bearing, and the mounting seat is arranged on the bearing platform.

[0013] Further, the telescopic rod is an electric telescopic rod or a hydraulic telescopic rod powered by the hydraulic power mechanism.

[0014] Further, the hydraulic crawler walking platform includes a hydraulic crawler assembly and a vehicle plate arranged on the vehicle frame of the hydraulic crawler assembly. The hydraulic power mechanism, the water ring vacuum mechanism and the hydraulic slewing mechanism are all arranged on the vehicle plate.

[0015] The beneficial effects of the above technical solutions of the present invention are as follows: In the prior art, for scattered dry pulverized coal, a wetting device is usually used to utilize an atomized high-pressure water jet, and then the wetted scattered pulverized coal is collected by manual shoveling. This method has low efficiency, the equipment is prone to blockage, and the working environment becomes worse after the dry pulverized coal and water mist are mixed and ejected. Moreover, the method of manual shoveling has technical problems such as high labor intensity and low working efficiency. The present invention provides a dry pulverized coal feeding machine, which includes a hydraulic crawler walking platform. A hydraulic power mechanism, a water ring vacuum mechanism, and a hydraulic slewing mechanism are arranged on the upper part of the hydraulic crawler walking platform. The hydraulic power mechanism provides power for the hydraulic crawler walking platform, the water ring vacuum mechanism, and the hydraulic slewing mechanism. A dry pulverized coal feeding mechanism is arranged on the hydraulic slewing mechanism, and the water ring vacuum mechanism provides a negative pressure source for the dry pulverized coal feeding mechanism.

[0016] In addition, the dry pulverized coal feeding mechanism includes a screw conveyor obliquely arranged on the hydraulic slewing mechanism. The screw of the screw conveyor is driven by a first hydraulic motor, and the first hydraulic motor is supplied with high-pressure oil by the hydraulic power mechanism. A feeder and a vacuum feeding hopper are sequentially connected in communication from bottom to top at the feeding port of the screw conveyor. A material suction port is arranged on the side of the vacuum feeding hopper, and an air suction port is arranged on the top of the vacuum feeding hopper. The air suction port is connected to the suction end of the water ring vacuum mechanism through a pipeline. After the dry pulverized coal feeding mechanism adopts the above structure, under the action of the vacuum environment provided by the water ring vacuum mechanism, the scattered dry pulverized coal is sucked into the interior of the vacuum feeding hopper through the material suction port by vacuum negative pressure, and the feeder inputs the dry pulverized coal entering the vacuum feeding hopper into the screw conveyor through the feeding port. During this process, since the scattered dry pulverized coal enters the vacuum feeding hopper under the adsorption action of negative pressure, it can effectively reduce dust generation, and at the same time, very fine dry pulverized coal can be sucked into the vacuum feeding hopper, playing a role in the feeding process.

[0017] In addition, in order to realize the angle adjustment between the multi-screw conveyor and the hydraulic slewing mechanism to facilitate the feeding of the screw conveyor, the screw conveyor and the hydraulic slewing mechanism are connected through an angle adjustment mechanism. The angle adjustment mechanism includes a mounting seat arranged on the hydraulic slewing mechanism. The feeding end of the screw conveyor is rotatably arranged on the mounting seat. The middle part of the screw conveyor is hinged to the upper end of an automatic telescopic rod, and the lower end of the automatic telescopic rod is hinged to a first ear plate arranged on the hydraulic slewing mechanism. After the angle adjustment mechanism adopts the above structure, when the angle of the screw conveyor needs to be adjusted, only the telescopic amount of the automatic telescopic rod needs to be adjusted to achieve the purpose of adjusting the angle of the screw conveyor.

[0018] In addition, the water ring vacuum mechanism includes a water ring vacuum pump, a water tank, and a plunger pump disposed on the hydraulic crawler walking platform. The water tank provides working fluid for the water ring vacuum pump. The plunger pump is used to convert and input the power of the hydraulic power mechanism into the water ring vacuum pump. The suction end of the water ring vacuum pump is connected to the suction port through a pipeline. After the water ring vacuum mechanism adopts the above structure, the hydraulic power mechanism is used to provide a power source for the plunger pump. The plunger pump converts and inputs the power of the hydraulic power mechanism into the water ring vacuum pump to drive the water ring vacuum pump to work. The suction end of the water ring vacuum pump is connected to the suction port through a pipeline, so as to form a vacuum above the inside of the vacuum feeding hopper, causing a continuous negative pressure to be formed in the vacuum feeding hopper. Furthermore, the vacuum negative pressure is used to suck the pulverized dry coal scattered on the ground into the inside of the vacuum feeding hopper through the suction port, and the feeder located at the bottom of the vacuum feeding hopper is used to feed the pulverized dry coal sucked into the inside of the vacuum feeding hopper into the screw conveyor through the feeding port, and the screw conveyor is used to feed the pulverized dry coal from the discharge port to a predetermined device, such as a belt conveyor, or a hopper, or a metering container, or another platform or the ground, etc.

[0019] In addition, the hydraulic slewing mechanism includes an external gear slewing bearing and a second hydraulic motor disposed on the hydraulic crawler walking platform. The second hydraulic motor is provided with high-pressure oil by the hydraulic power mechanism. The output end of the second hydraulic motor is connected to a worm that mates with the external gear ring of the external gear slewing bearing. A bearing platform is provided at the top of the inner ring of the external gear slewing bearing, and the mounting seat is disposed on the bearing platform. After the hydraulic slewing mechanism adopts the above structure, the hydraulic power mechanism is used to provide high-pressure oil for the second hydraulic motor. The second hydraulic motor drives the worm to rotate under the action of the high-pressure oil. Furthermore, the worm drives the external gear slewing bearing to rotate, so as to drive the upper pulverized dry coal feeding mechanism to rotate, facilitating the recovery of the pulverized dry coal scattered on the ground by using this pulverized dry coal feeder and feeding it through the discharge port of the screw conveyor.

[0020] When using the present invention to collect and feed the scattered dry pulverized coal, first move the feeding machine to the working area and start the hydraulic power mechanism. Then, adjust the angle of the screw conveyor as needed using the angle adjustment mechanism, and adjust the orientation of the discharge port of the screw conveyor using the hydraulic slewing mechanism. After that, the hydraulic power mechanism provides power to the water ring vacuum mechanism, and the negative pressure generated by the operation of the water ring vacuum mechanism provides a negative pressure source for the dry pulverized coal feeding mechanism. The suction end of the water ring vacuum pump is connected to the suction port through a pipeline, so as to form a vacuum above the inside of the vacuum feeding hopper. Then, use the vacuum negative pressure to suck the dry pulverized coal scattered on the ground into the inside of the vacuum feeding hopper through the suction port, and use the feeder located at the bottom of the vacuum feeding hopper to feed the dry pulverized coal sucked into the inside of the vacuum feeding hopper into the screw conveyor through the feed port, and use the screw conveyor to feed the dry pulverized coal from the discharge port to the predetermined device. The working efficiency of the present invention can collect 2 to 3 tons of scattered dry pulverized coal per hour. On the one hand, the hydraulic power mechanism provides the walking and working power for the whole unit uniformly, with simple power configuration and convenient maintenance. On the other hand, vacuum negative pressure feeding is adopted, which has the advantages of high feeding efficiency, small installation workload and simple operation.

[0021] Other advantages of the present invention will be elaborated in detail in the specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the main view structural schematic diagram of a dry pulverized coal feeding machine of the present invention;

[0023] Figure 2 is the three-dimensional structural schematic diagram of a dry pulverized coal feeding machine of the present invention;

[0024] Reference Signs:

[0025] Hydraulic crawler walking platform 100;

[0026] Hydraulic crawler assembly 110;

[0027] Frame 130;

[0028] Vehicle board 120;

[0029] Hydraulic power mechanism 200;

[0030] Hydraulic pump 210;

[0031] Hydraulic oil tank 220;

[0032] Water ring vacuum mechanism 300;

[0033] Water ring vacuum pump 310;

[0034] Water tank 320;

[0035] Plunger pump 330;

[0036] Hydraulic slewing mechanism 400;

[0037] External gear slewing bearing 410;

[0038] Second hydraulic motor 420;

[0039] Worm 430;

[0040] Carrying platform 440;

[0041] Dry coal feeding mechanism 600;

[0042] Screw conveyor 610;

[0043] Feeding port 611;

[0044] First fixed seat 612;

[0045] Second fixed seat 613;

[0046] Second ear plate 614;

[0047] First hydraulic motor 620;

[0048] Feeder 630;

[0049] Vacuum feeding hopper 640;

[0050] Suction port 641;

[0051] Air inlet 642;

[0052] Angle adjustment mechanism 700;

[0053] Mounting seat 710;

[0054] Automatic telescopic rod 720;

[0055] First ear plate 730. Detailed implementation manners

[0056] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will combine the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention. Figure 1-2

[0057] Such as Figure 1-2As shown: A dry pulverized coal feeding machine includes a hydraulic crawler walking platform. A hydraulic power mechanism, a water ring vacuum mechanism, and a hydraulic slewing mechanism are arranged on the upper part of the hydraulic crawler walking platform. The hydraulic power mechanism provides power for the hydraulic crawler walking platform, the water ring vacuum mechanism, and the hydraulic slewing mechanism. A dry pulverized coal feeding mechanism is arranged on the hydraulic slewing mechanism, and the water ring vacuum mechanism provides a negative pressure source for the dry pulverized coal feeding mechanism.

[0058] Specifically, as Figure 1 and Figure 2 shown, a dry pulverized coal feeding machine includes a hydraulic crawler walking platform 100. A hydraulic power mechanism 200, a water ring vacuum mechanism 300, and a hydraulic slewing mechanism 400 are arranged on the upper part of the hydraulic crawler walking platform 100. The hydraulic power mechanism 200 provides power for the hydraulic crawler walking platform 100, the water ring vacuum mechanism 300, and the hydraulic slewing mechanism 400. A dry pulverized coal feeding mechanism 600 is arranged on the hydraulic slewing mechanism 400, and the water ring vacuum mechanism 300 provides a negative pressure source for the dry pulverized coal feeding mechanism 600.

[0059] According to an embodiment of the present invention, as Figure 1 and Figure 2 shown, the dry pulverized coal feeding mechanism 600 includes a screw conveyor 610 inclinedly arranged on the hydraulic slewing mechanism 400. The screw of the screw conveyor 610 is driven by a first hydraulic motor 620, and the first hydraulic motor 620 is provided with high-pressure oil by the hydraulic power mechanism 200. A feeder 630 and a vacuum feeding hopper 640 are sequentially connected and arranged on the feed inlet 611 of the screw conveyor 610 from bottom to top. A material suction port 641 is arranged on the side of the vacuum feeding hopper 640, and an air suction port 642 is arranged on the top of the vacuum feeding hopper 640. The air suction port 642 is connected to the suction end of the water ring vacuum mechanism 300 through a pipeline.

[0060] In this embodiment, after the dry pulverized coal feeding mechanism 600 adopts the above structure, under the action of the vacuum environment provided by the water ring vacuum mechanism 300, the vacuum feeding hopper 640 uses vacuum negative pressure to suck the scattered dry pulverized coal into the interior of the vacuum feeding hopper 640 through the material suction port, and the feeder 630 inputs the dry pulverized coal entering the vacuum feeding hopper 640 into the screw conveyor 610 through the feed inlet 611. During this process, since the scattered dry pulverized coal enters the vacuum feeding hopper 640 under the adsorption action of negative pressure, it can effectively reduce dust generation, and at the same time, it can suck very fine dry pulverized coal into the vacuum feeding hopper 640, playing a role in the feeding process.

[0061] According to an embodiment of the present invention, as Figure 1 and Figure 2As shown, the screw conveyor 610 is connected to the hydraulic slewing mechanism 400 through an angle adjustment mechanism 700. The angle adjustment mechanism 700 includes a mounting seat 710 provided on the hydraulic slewing mechanism 400. The feeding end of the screw conveyor 610 is rotatably provided on the mounting seat 710. The middle part of the screw conveyor 610 is hinged to the upper end of a telescopic rod 720, and the lower end of the telescopic rod 720 is hinged to a first ear plate 730 provided on the hydraulic slewing mechanism 400.

[0062] In this embodiment, in order to realize the angle adjustment between the multi-screw conveyor 610 and the hydraulic slewing mechanism 400 to facilitate the feeding of the screw conveyor 610, the screw conveyor 610 is connected to the hydraulic slewing mechanism 400 through an angle adjustment mechanism 700. The angle adjustment mechanism 700 includes a mounting seat 710 provided on the hydraulic slewing mechanism 400. The feeding end of the screw conveyor 610 is rotatably provided on the mounting seat 710. The middle part of the screw conveyor 610 is hinged to the upper end of a telescopic rod 720, and the lower end of the telescopic rod 720 is hinged to a first ear plate 730 provided on the hydraulic slewing mechanism 400. After the angle adjustment mechanism 700 adopts the above structure, when the angle of the screw conveyor 610 needs to be adjusted, only the telescopic amount of the telescopic rod 720 needs to be adjusted to achieve the purpose of adjusting the angle of the screw conveyor 610.

[0063] According to an embodiment of the present invention, as Figure 1 and Figure 2 shown, a first fixing seat 612 is provided at the bottom of the feeding end of the screw conveyor 610, and the lower part of the first fixing seat 612 is hinged to the inner side of the mounting seat 710.

[0064] In this embodiment, in order to facilitate the hinging of the bottom of the feeding end of the screw conveyor 610 to the mounting seat 710, a first fixing seat 612 is provided at the bottom of the feeding end of the screw conveyor 610, and the lower part of the first fixing seat 612 is hinged to the inner side of the mounting seat 710.

[0065] According to an embodiment of the present invention, as Figure 1 and Figure 2 shown, a second fixing seat 613 is provided in the middle of the screw conveyor 610, a second ear plate 614 is provided at the bottom of the second fixing seat 613, and the upper end of the telescopic rod 720 is hinged to the second ear plate 614.

[0066] In this embodiment, in order to facilitate the hinging of the upper end of the automatic telescopic rod 720 to the middle part of the screw conveyor 610, a second fixing seat 613 is provided in the middle part of the screw conveyor 610, and a second ear plate 614 is provided at the bottom of the second fixing seat 613. The upper end of the automatic telescopic rod 720 is hinged to the second ear plate 614.

[0067] According to an embodiment of the present invention, as Figure 1 and Figure 2 shown, the hydraulic power mechanism 200 includes a hydraulic pump 210 and a hydraulic oil tank 220. The hydraulic oil tank 220 provides hydraulic oil for the hydraulic pump 210, and the hydraulic pump 210 provides power to the hydraulic crawler walking platform 100, the water ring vacuum mechanism 300, and the hydraulic slewing mechanism 400 through a hydraulic control valve.

[0068] In this embodiment, after the hydraulic power mechanism 200 adopts the above structure, the hydraulic pump 210 pressurizes the hydraulic oil in the hydraulic oil tank 220 and provides power to the hydraulic crawler walking platform 100, the water ring vacuum mechanism 300, and the hydraulic slewing mechanism 400 through a control valve.

[0069] According to an embodiment of the present invention, as Figure 1 and Figure 2 shown, the water ring vacuum mechanism 300 includes a water ring vacuum pump 310, a water tank 320, and a plunger pump 330 provided on the hydraulic crawler walking platform 100. The water tank 320 provides working fluid for the water ring vacuum pump 310. The plunger pump 330 is used to convert and input the power of the hydraulic power mechanism 200 into the water ring vacuum pump 310. The suction end of the water ring vacuum pump 310 is connected to the suction port 642 through a pipeline.

[0070] In this embodiment, after the water ring vacuum mechanism 300 adopts the above structure, the hydraulic power mechanism 200 provides a power source for the plunger pump 330. The plunger pump 330 converts and inputs the power of the hydraulic power mechanism 200 into the water ring vacuum pump 310 to drive the water ring vacuum pump 310 to work. The suction end of the water ring vacuum pump 310 is connected to the suction port 642 through a pipeline, so as to form a vacuum above the inside of the vacuum feeding hopper 640. Then, the dry pulverized coal scattered on the ground is sucked into the inside of the vacuum feeding hopper 640 by using the vacuum negative pressure, and the feeder 630 located at the bottom of the vacuum feeding hopper 640 feeds the dry pulverized coal sucked into the inside of the vacuum feeding hopper 640 into the screw conveyor 610 through the feeding port 611, and the screw conveyor 610 feeds the dry pulverized coal from the discharge port to a predetermined device.

[0071] According to an embodiment of the present invention, as Figure 1 and Figure 2As shown, the hydraulic slewing mechanism 400 includes an external gear slewing bearing 410 and a second hydraulic motor 420 disposed on the hydraulic crawler walking platform 100. The second hydraulic motor 420 is supplied with high-pressure oil by the hydraulic power mechanism 200. The output end of the second hydraulic motor 420 is connected to a worm 430 that mates with the external gear ring of the external gear slewing bearing 410. A bearing platform 440 is provided at the top of the inner ring of the external gear slewing bearing 410, and the mounting seat 710 is disposed on the bearing platform 440.

[0072] In this embodiment, after the hydraulic slewing mechanism 400 adopts the above structure, the hydraulic power mechanism 200 is used to supply high-pressure oil to the second hydraulic motor 420. Under the action of the high-pressure oil, the second hydraulic motor 420 drives the worm 430 to rotate. Further, the worm 430 drives the external gear slewing bearing 410 to rotate, thereby driving the upper dry powder coal feeding mechanism 600 to rotate, so as to facilitate the recovery of the dry powder coal scattered on the ground by this dry powder coal feeder and feed it through the discharge port of the screw conveyor 610.

[0073] According to an embodiment of the present invention, the automatic telescopic rod 720 adopts an electric telescopic rod. The function of the automatic telescopic rod 720 is to drive the discharge port end of the screw conveyor 610 to adjust the angle around the mounting seat 710. Obviously, the automatic telescopic rod is not limited to the hydraulic telescopic rod powered by the hydraulic power mechanism 200, and other types of telescopic rods can also be used, such as an electric telescopic rod. However, in order to reduce the power supply configuration, the hydraulic telescopic rod powered by the hydraulic power mechanism 200 is preferably used.

[0074] According to an embodiment of the present invention, as Figure 1 and Figure 2 shown, the hydraulic crawler walking platform 100 includes a hydraulic crawler assembly 110 and a vehicle plate 120 disposed on the vehicle frame 130 of the hydraulic crawler assembly 110. The hydraulic power mechanism 200, the water ring vacuum mechanism 300, and the hydraulic slewing mechanism 400 are all disposed on the vehicle plate 120.

[0075] Usage method of the present invention: First, move the present feeding machine to the working area, start the hydraulic power mechanism 200, and then adjust the angle of the screw conveyor 610 as needed by using the angle adjustment mechanism 700, and adjust the orientation of the discharge port of the screw conveyor 610 by using the hydraulic slewing mechanism 400; then the hydraulic power mechanism 200 provides power to the water ring vacuum mechanism 300, and the negative pressure generated by the operation of the water ring vacuum mechanism 300 provides a negative pressure source for the dry powder coal feeding mechanism 600. The suction end of the water ring vacuum pump 310 is connected to the suction port 642 through a pipeline, so as to form a vacuum above the inside of the vacuum feeding hopper 640. Furthermore, the dry powder coal scattered on the ground is sucked into the inside of the vacuum feeding hopper 640 by using the vacuum negative pressure through the suction port 641, and the feeder 630 located at the bottom of the vacuum feeding hopper 640 feeds the dry powder coal sucked into the inside of the vacuum feeding hopper 640 into the screw conveyor 610 through the feed port 611, and the screw conveyor 610 feeds the dry powder coal from the discharge port to a predetermined device. The working efficiency of the present invention can collect 2 to 3 tons of scattered dry powder coal per hour.

[0076] The above is the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art of the present technology, without departing from the principle described in the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A dry coal feeder, characterized in that: It includes a hydraulic crawler walking platform, on the upper part of which a hydraulic power mechanism, a water ring vacuum mechanism and a hydraulic slewing mechanism are provided. The hydraulic power mechanism provides power for the hydraulic crawler walking platform, the water ring vacuum mechanism and the hydraulic slewing mechanism. A dry coal feeding mechanism is arranged on the hydraulic slewing mechanism, and the water ring vacuum mechanism provides a negative pressure source for the dry coal feeding mechanism. The dry coal feeding mechanism includes a screw conveyor obliquely arranged on the hydraulic slewing mechanism. The screw of the screw conveyor is driven by a first hydraulic motor, and the first hydraulic motor is supplied with high-pressure oil by the hydraulic power mechanism. A feeder and a vacuum feeding hopper are sequentially connected in communication from bottom to top at the feeding port of the screw conveyor. A material suction port is arranged on the side of the vacuum feeding hopper, and an air suction port is arranged on the top of the vacuum feeding hopper. The air suction port is connected in communication with the air suction end of the water ring vacuum mechanism through a pipeline. The screw conveyor is connected with the hydraulic slewing mechanism through an angle adjusting mechanism. The angle adjusting mechanism includes a mounting seat arranged on the hydraulic slewing mechanism. The feeding end of the screw conveyor is rotatably arranged on the mounting seat. The middle part of the screw conveyor is hinged to the upper end of an automatic telescopic rod, and the lower end of the automatic telescopic rod is hinged to a first ear plate arranged on the hydraulic slewing mechanism. A first fixing seat is arranged at the bottom of the feeding end of the screw conveyor, and the lower part of the first fixing seat is hinged to the inner side of the mounting seat. A second fixing seat is arranged in the middle of the screw conveyor, a second ear plate is arranged at the bottom of the second fixing seat, and the upper end of the automatic telescopic rod is hinged to the second ear plate.

2. The dry coal feeder according to claim 1, characterized in that: The hydraulic power mechanism includes a hydraulic pump and a hydraulic oil tank. The hydraulic oil tank provides hydraulic oil for the hydraulic pump, and the hydraulic pump provides power for the hydraulic crawler walking platform, the water ring vacuum mechanism and the hydraulic slewing mechanism through a hydraulic control valve.

3. The dry coal feeder according to claim 1, characterized in that: The water ring vacuum mechanism includes a water ring vacuum pump, a water tank and a plunger pump arranged on the hydraulic crawler walking platform. The water tank provides working fluid for the water ring vacuum pump, and the plunger pump is used to convert and input the power of the hydraulic power mechanism into the water ring vacuum pump. The air suction end of the water ring vacuum pump is connected in communication with the air suction port through a pipeline.

4. The dry pulverized coal feeder according to claim 1, characterized in that: The hydraulic slewing mechanism includes an external gear slewing bearing and a second hydraulic motor arranged on the hydraulic crawler walking platform. The second hydraulic motor is supplied with high-pressure oil by the hydraulic power mechanism. The output end of the second hydraulic motor is connected with a worm gear that cooperates with the external gear ring of the external gear slewing bearing. A bearing platform is arranged at the top of the inner ring of the external gear slewing bearing, and the mounting seat is arranged on the bearing platform.

5. The dry pulverized coal feeding machine according to claim 1, wherein: The automatic telescopic rod adopts an electric telescopic rod or a hydraulic telescopic rod powered by the hydraulic power mechanism.

6. The dry coal feeder according to any one of claims 1 to 5, characterized in that: The hydraulic crawler walking platform includes a hydraulic crawler assembly and a vehicle plate arranged on the frame of the hydraulic crawler assembly. The hydraulic power mechanism, the water ring vacuum mechanism and the hydraulic slewing mechanism are all arranged on the vehicle plate.

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