Spraying device for dust suppressant in railway dust suppression station

Abstract

The utility model discloses a dust suppressant spraying device for a railway dust suppression station, and relates to the technical field of railway dust suppressant spraying. The device comprises a portal frame, a spraying structure and a backflow structure, a spraying structure is fixed to the portal frame, a backflow structure is connected to the lower portion of the spraying structure and comprises a backflow pipe, a liquid collecting tank and a rotating motor, the rotating motor is fixed to the portal frame, rotating shafts are fixed to the two ends of the liquid collecting tank respectively, and one rotating shaft is connected with an output shaft of the rotating motor through a coupler. And the other rotating shaft is arranged in a bearing in a penetrating manner, and the bearing is fixed on a portal frame cross beam. According to the device, the backflow structure is arranged below the spraying structure, and in the idle period without spraying, all liquid sprayed by the spraying head falls into the liquid collecting tank and returns to be recycled through the backflow pipe; when the dust suppressant needs to be sprayed to the carriage, the liquid collecting tank is rotated, and the nozzle is exposed outside to spray the dust suppressant; the response speed of the baffle-type nozzle is higher than that of a spraying structure controlled by an electromagnetic valve.

Description

Technical Field

[0001] The utility model relates to the technical field of railway dust suppressant spraying, in particular to a dust suppressant spraying device for a railway dust suppression station. Background Art

[0002] Coal is usually transported by rail, and during transportation, the coal must be dust-suppressed to form a protective film and reduce pollution. Existing railway dust suppressants use solenoid valves to control the opening and closing of the spray system, such as the invention patent with publication number CN101920232A, which is named a fully automatic railway transportation dust suppression spraying system. It automatically monitors the vehicle speed and vehicle connection gap in real time, and controls the opening and closing state and opening degree of the solenoid valve according to the monitoring results. The dust suppressant is composed of a multifunctional high molecular polymer. When the solenoid valve is closed and not sprayed, the dust suppressant will be retained inside the pipeline, resulting in solute and solution stratification, resulting in uneven dust suppressant concentration. There are obvious differences in dust suppression effects at different locations in the same carriage.

[0003] In addition, in some prior arts, the solenoid valve that controls the opening and closing of the nozzle is arranged on the liquid inlet pipe, a certain distance away from the nozzle. After the solenoid valve is closed, a small amount of liquid remains in the pipe near the nozzle, and spraying continues downward. At this time, the carriage is no longer under the nozzle, and the dust suppressant is sprayed at the connection position between the carriages, which wastes resources and pollutes the train components. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a spraying device for dust suppressants in a railway dust suppression station. The spraying structure is always in a spraying state, and the sprayed dust suppressant flows back to the dust suppressant stirring unit or storage unit through the reflux structure, ensuring that the dust suppressant is always in a uniformly dissolved flow state, ensuring that the dust suppressant concentration in the sprayed carriage is uniform and the dust suppression effect is uniform.

[0005] To achieve this technical purpose, the utility model adopts the following scheme: a spraying device for dust suppressant in a railway dust suppression station comprises a gantry, a spraying structure and a reflux structure; the gantry spans above the rails, a spraying structure is fixed on the crossbeam of the gantry, a reflux structure is connected below the spraying structure, the reflux structure comprises a reflux pipe, a liquid collecting tank and a rotating motor, the rotating motor is fixed to the crossbeam of the gantry through a bracket, rotating shafts are respectively fixed at both ends of the liquid collecting tank, one of the rotating shafts is connected to the output shaft of the rotating motor through a coupling, and the other rotating shaft is installed in a bearing, and the outer ring of the bearing is fixed on the crossbeam of the gantry; a metal hose or a bellows is connected to one end of the liquid collecting tank, and the metal hose or the bellows is connected to the reflux pipe.

[0006] Compared with the prior art, the beneficial effects of the utility model are as follows: the device sets a reflux structure below the spraying structure. During the idle period when there is no need to spray the carriage, the spraying structure also works. All the sprayed liquid falls into the liquid collecting tank and returns to the dust suppressant stirring unit or storage unit through the reflux pipe for recycling. When it is necessary to spray the carriage, the rotating motor starts to drive the liquid collecting tank to rotate, exposing the spraying structure to the outside, and the spraying structure sprays the dust suppressant into the carriage. During the whole process, the dust suppressant is always in a flowing state, the liquid concentration is uniform, and the dust suppression effect is uniform. The utility model adopts a gantry-type downward spraying method. The baffle-type nozzle with the liquid collecting tank as a baffle can ensure that the dust suppressant is always in a flowing state. The rotation speed of the liquid collecting tank is faster than the start and stop time of the end liquid inlet pipe solenoid valve. The spraying and stopping action response speed of the dust suppressant is faster, which avoids the contamination of the interval position of the high-speed train carriage by the dust suppressant.

[0007] Furthermore, the spraying structure includes a liquid inlet pipe, a support frame and a nozzle. The support frame is fixedly connected to the gantry beam. The liquid inlet pipe is placed horizontally in the support frame. The lower side wall of the liquid inlet pipe is evenly distributed with rows of nozzles, and a liquid collecting tank is below the nozzle.

[0008] Furthermore, the bearing and the bracket are fixed at both ends of the support frame.

[0009] Furthermore, the axis of the nozzle is staggered with the axis of the rotating shaft of the liquid collecting tank, so that after the liquid collecting tank rotates, the nozzle is exposed outside the liquid collecting tank and the sprayed dust suppressant all falls on the car body.

[0010] Furthermore, the rotating motor is a servo motor with higher precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A diagram showing the use status of a spraying device for a dust suppressant at a railway dust suppression station provided by an embodiment of the utility model;

[0012] Figure 2 A schematic diagram of the main structure of a dust suppressant spraying device for a railway dust suppression station provided by an embodiment of the utility model;

[0013] The markings in the figure are: 1. Gantry; 2. Support frame; 3. Liquid inlet pipe; 4. Nozzle; 5. Liquid collecting tank; 6. Rotating motor; 7. Return pipe; 8. Bearing. DETAILED DESCRIPTION

[0014] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific implementation methods, but the present invention is not limited thereto.

[0015] like Figure 1 and Figure 2As shown, the utility model provides a spraying device for a dust suppressant in a railway dust suppression station, comprising a gantry 1, a spraying structure and a reflux structure. The gantry 1 spans across the rails, and the spraying structure and the reflux structure are installed on the crossbeam of the gantry 1. The spraying structure comprises a liquid inlet pipe 3, a support frame 2 and a spray head 4. The support frame 2 is fixed on the crossbeam of the gantry 1. The liquid inlet pipe 3 is horizontally placed and fixed at the lower part of the support frame 2, and the support frame 2 bears the gravity of the liquid inlet pipe 3. The lower side wall of the liquid inlet pipe 3 is evenly provided with a plurality of mounting holes, and a spray head 4 is installed at each mounting hole. The spraying angle of the spray head 4 is determined according to the actual use requirements, and is generally arranged vertically downward. Preferably, a liquid inlet valve is installed at the end of the liquid inlet pipe 3.

[0016] The reflux structure is arranged below the nozzle 4, and the reflux structure includes a reflux pipe 7, a rotary motor 6 and a liquid collecting tank 5. The outer walls at both ends of the liquid collecting tank 5 are respectively fixed with rotating shafts, one of which is connected to the output shaft of the rotary motor 6 through a coupling, and the rotary motor 6 is fixed in the motor bracket, and the motor bracket is fixed on the support frame 2; the other rotating shaft is provided with a bearing 8, and the bearing 8 is fixed on the support frame 2, and the bearing 8 plays a role in fixing and rotating the liquid collecting tank 5. Preferably, the rotary motor 6 uses a servo motor, and the bottom surface of the liquid collecting tank 5 is an inclined surface, and the bottom surface of one end connected to the corrugated pipe is lower. The end of the liquid collecting tank 5 on the rotary motor side is connected to a corrugated metal pipe or a metal hose, and the corrugated metal pipe or the metal hose is also connected to the reflux pipe 7 to form a circuit of the dust suppressant. When the rotary motor 6 starts to drive the liquid collecting tank 5 to rotate, the corrugated pipe or the metal hose can change position following the liquid collecting tank 5. The axis of the rotating shaft of the liquid collecting tank 5 and the connecting line of all the nozzles 4 are offset, that is, they are not on the same vertical plane, to ensure that when the liquid collecting tank 5 rotates around the rotating shaft, the spraying position of the nozzle 4 can be given up, so that the dust suppressant can be sprayed all over the carriage. At the same time, when there is no transport train passing by and spraying is not needed, the liquid collecting tank 5 will cover all the nozzles 4 and collect the dust suppressant sprayed by all the spraying structures.

[0017] Working process: dust suppressant is pumped into the liquid inlet pipe 3 by the stirring unit or storage unit, and the dust suppressant in the liquid inlet pipe 3 is sprayed outward from the nozzle 4. When there is no train transporting coal passing by, the liquid collecting tank 5 is in a horizontal position, and all the liquid sprayed by the nozzle 4 falls into the liquid collecting tank 5, and flows back to the stirring unit or storage unit through the reflux pipe 7 for recycling; when a train transporting coal passes by, the rotating motor 6 starts to drive the liquid collecting tank 5 to rotate to make way for the area under the nozzle 4, so that all the dust suppressant sprayed by the nozzle 4 falls on the carriage. The start and stop of the rotating motor 6 is controlled by the control system, which includes detection elements for detecting whether the train has reached the specified position and the length of the train carriage. The start time of the rotating motor is controlled according to these feedback data. The control system and control method of the servo motor are existing public content and will not be described in detail here.

[0018] Finally, it should be noted that the above-listed examples are only preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and modifications fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A dust suppressant spraying device for a railway dust suppression station, comprising a gantry, a spraying structure and a reflux structure; characterized in that: The gantry spans over the rails, and a spraying structure is fixed on the crossbeam of the gantry. A reflux structure is connected below the spraying structure. The reflux structure includes a reflux pipe, a liquid collecting tank and a rotating motor. The rotating motor is fixed to the crossbeam of the gantry through a bracket. Rotating shafts are fixed at both ends of the liquid collecting tank, one of the rotating shafts is connected to the output shaft of the rotating motor through a coupling, and the other rotating shaft is installed in a bearing, and the bearing is fixed on the crossbeam of the gantry; a metal hose or a bellows is connected to one end of the liquid collecting tank, and the metal hose or the bellows is connected to the reflux pipe.

2. The spraying device of dust suppressant for railway dust suppression station according to claim 1 is characterized in that: The spraying structure includes a liquid inlet pipe, a support frame and a nozzle. The support frame is fixedly connected to the gantry beam. The liquid inlet pipe is placed horizontally in the support frame. The lower side wall of the liquid inlet pipe is evenly distributed with rows of nozzles, and a liquid collecting tank is below the nozzle.

3. The spraying device of dust suppressant for railway dust suppression station according to claim 1, characterized in that: The bearing and the bracket are fixed at both ends of the support frame.

4. The spraying device of dust suppressant for railway dust suppression station according to claim 1, characterized in that: The axis where the nozzle is located is staggered with the axis of the rotating shaft of the liquid collecting tank, so as to ensure that the nozzle is exposed outside the liquid collecting tank after the liquid collecting tank rotates.

5. The spraying device of dust suppressant for railway dust suppression station according to claim 1, characterized in that: The rotating motor is a servo motor.

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