External flow field asymmetric interference homogenization ground flushing method

Abstract

The invention provides an external flow field asymmetric interference homogenization ground flushing method, the ground flushing method is arranged in a coal conveying gallery, a rotary nozzle and fixed nozzles are adopted in the ground flushing method, the fixed nozzles are arranged on the two sides of the coal conveying gallery of the rotary nozzle, and the rotary nozzle is arranged in the coal conveying gallery. The rotary nozzle is arranged at the top of the coal conveying gallery, the transverse axis of the axis of a rotating shaft of the rotary nozzle is aligned with the axes of the fixed nozzles on the two sides, manual ground flushing in a large-space workplace in the industrial field is achieved, water resources are saved, the dead-corner-free flushing method is adopted, the flushing process and the flushing duration are automatically controlled, and the flushing efficiency is improved. Manual intervention is not needed, the labor amount is reduced, the labor cost is saved, the production safety is improved, 70%-90% of large-area water washing is achieved without manual intervention, and the water saving rate is 60%-80%.

Description

Technical Field

[0001] This article belongs to the technical field of ground flushing of coal conveying corridors, and specifically relates to a ground flushing method of asymmetric interference homogenization of external flow fields. Background Art

[0002] In the industrial field, it is difficult to carry out ground flushing and cleaning in large space workplaces with many equipment installed on the ground. Usually, manual or flooding operations are adopted. Even if a few fixed flushing methods are used, it is difficult to flush and clean the ground. In order to reduce the labor burden and reduce the waste of resources, a flushing process is proposed which can reduce manual flushing, save water resources and achieve dead-angle cleaning of the ground.

[0003] Among them, in the field of engineering technology of mining and use of coal conveyor corridors, belt conveyors are mostly used for mineral transportation. After the conveying system has been used for a period of time, a large amount of mine dust has accumulated on the working belt surface of the belt conveyor, the belt conveyor stand, the corridor and the trestle floor, which need to be washed with water. In the coal conveying system and the mineral conveying system, in order to remove impurities and dirt on the equipment and the ground (such as coal powder, coal slag, coal slime and other minerals of different particle sizes), dust pollution and dust explosion can be eliminated, and scattered particulate minerals can be effectively recovered to reduce resource waste. By washing the abrasive on the belt surface, the rubber surface can be protected and the service life can be extended.

[0004] Existing water flushing is mainly carried out manually, which is labor-intensive. Long-term work in a dusty environment is harmful to the health of workers. The cost of using flushing water cannot be quantified and managed. The efficiency of manual flushing cannot meet the requirements of cleaning all the mineral dirt stuck to the conveyor belt frame and belt surface and the mineral dust scattered on the ground within one shift of the production plan. The operation can only be repeated in multiple shifts. The quality of manual flushing operations is difficult to control and there are management blind spots. Manual cleaning work cannot be cross-operated when the belt conveyor system is running. Summary of the invention

[0005] In order to solve the above problems, this paper proposes an external flow field asymmetric interference homogenization ground flushing method. The ground flushing method is arranged inside the coal conveying corridor. The ground flushing method includes a rotary nozzle and a fixed nozzle. The fixed nozzle is arranged on both sides of the coal conveying corridor of the rotary nozzle, and the rotary nozzle is arranged on the top of the coal conveying corridor. The transverse axis of the rotating shaft of the rotary nozzle is aligned with the axis of the fixed nozzles on both sides. It solves the problem of manual flushing of the ground in large space workplaces in the industrial field, saves water resources and has a dead angle flushing method. The flushing process and flushing time are automatically controlled without manual intervention, which reduces the workload, saves labor costs, improves production safety, and achieves 70-90% unmanned intervention in large-area water flushing, and a water saving rate of 60-80%.

[0006] The specific implementation of the floor flushing method is as follows;

[0007] a. The internal ground of the coal conveying gallery to be flushed is regarded as an external flow field of a fluid flow area;

[0008] b. The internal ground of the coal transportation corridor is the external flow field of the water flushing fluid flow area, which is also asymmetric. Under this working condition, the flow velocity and streamline of the flushing water show obvious differences in different positions or directions, and do not show symmetry;

[0009] c. Through the water flushing mode of the rotating nozzle on the top surface, a large area of ​​water flushing can be achieved;

[0010] d. Through the water flushing mode of the fixed nozzles on both sides, the asymmetry formed by the large-area water flushing of the rotating nozzle is interfered and homogenized;

[0011] e. Use automation technology to control the duration of water flushing of rotating nozzles and fixed nozzles;

[0012] f. Use automation technology to control the blowing and flushing range of rotating nozzle water and fixed nozzle.

[0013] The coal transportation corridor is a long closed corridor. A coal conveyor belt is longitudinally conductively provided at the inner bottom of the coal transportation corridor. Pedestrian walkways are provided on the left and right sides of the coal conveyor belt. A protective cover is provided on the outer side of the umbrella-free conveyor belt. A number of rotating nozzles are longitudinally equidistantly provided on the top surface of the protective cover. Fixed nozzles are provided on the left and right sides of each rotating nozzle with cross-sections flush with each other. The flushing process and flushing time are automatically controlled without manual intervention, which reduces the workload, saves labor costs, and improves production safety. The flushing process and flushing time are automatically controlled, and the amount of flushing water saved indirectly reduces the production operation cost.

[0014] The rotating nozzle is a large-range rotating nozzle. The rotating axis of the rotating nozzle is aligned with the longitudinal center of the coal conveying corridor. The water flushing fluid of the rotating nozzle is in the shape of a spherical arc cover. The spacing between several rotating nozzles is greater than twice the spray radius of the rotating nozzle water. The fixed nozzle is a fan-shaped direct injection nozzle. The fixed nozzles are all facing the middle of the coal conveying corridor. The spray angle of the fixed nozzle is 90 degrees to that of the rotating nozzle. The external flow field asymmetric interference homogenization ground flushing method solves the cleanliness of ground flushing in large space workplaces in the industrial field.

[0015] Beneficial effects:

[0016] It solves the problem of manual flushing of large-space workplaces in the industrial field, saves water resources and has a flushing method without dead ends. The flushing process and flushing time are automatically controlled without manual intervention, which reduces the workload, saves labor costs, improves production safety, and achieves 70-90% unmanned intervention in large-area water flushing, and a water saving rate of 60-80%.

[0017] The flushing process and flushing time are automatically controlled without manual intervention, which reduces the workload, saves labor costs and improves production safety.

[0018] The flushing process and flushing time are automatically controlled, which saves flushing water and indirectly reduces production and operation costs.

[0019] The external flow field asymmetric interference homogenization ground flushing method solves the problem of cleanliness of ground flushing in large space workplaces in the industrial field. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a flushing flow chart of a ground flushing method using asymmetric interference homogenization of an external flow field;

[0021] Figure 2 It is a schematic diagram of an asymmetric interference homogenization cross section of an asymmetric interference homogenization ground flushing method of an external flow field;

[0022] In the figure; 1. Coal conveying corridor, 2. Rotating nozzle, 3. Fixed nozzle, 4. External flow field, 5. Asymmetric flow field. DETAILED DESCRIPTION

[0023] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0024] Coal conveying gallery 1, rotating nozzle 2, fixed nozzle 3, external flow field 4, asymmetric flow field 5.

[0025] like Figure 1 , 2 As shown;

[0026] This paper proposes a ground flushing method for asymmetric interference homogenization of an external flow field 4, characterized in that the ground flushing method is arranged inside a coal conveying corridor 1, and the ground flushing method includes a rotating nozzle 2 and a fixed nozzle 3. The fixed nozzle 3 is arranged on both sides of the coal conveying corridor 1 of the rotating nozzle 2, and the rotating nozzle 2 is arranged on the top of the coal conveying corridor 1. The transverse axis of the rotating shaft of the rotating nozzle 2 is aligned with the axis of the fixed nozzles 3 on both sides. The coal conveying corridor 1 is a long closed corridor, and a coal conveyor belt is longitudinally conductively arranged at the inner bottom of the coal conveying corridor 1. Pedestrian walkways are arranged on the left and right sides of the coal conveyor belt, and the outer side of the umbrella conveyor belt is wrapped The type is provided with a protective outer cover, and a plurality of rotating nozzles 2 are longitudinally equidistantly provided on the top surface of the protective outer cover, and the left and right sides of each rotating nozzle 2 are provided with a fixed nozzle 3 with a cross-section flush with each other, and the rotating nozzle 2 is a large-range rotating nozzle, and the rotating axis of the rotating nozzle 2 is aligned with the longitudinal center of the coal conveying gallery 1. The shape of the water flushing fluid of the rotating nozzle 2 is a spherical arc cover shape, and the spacing between the plurality of rotating nozzles 2 is greater than twice the injection radius of the water of the rotating nozzle 2. The fixed nozzle 3 is a fan-shaped direct injection nozzle, and the fixed nozzles 3 are all directed toward the middle of the coal conveying gallery 1, and the injection angle of the fixed nozzle 3 is 90 degrees to that of the rotating nozzle 2.

[0027] Implementation examples;

[0028] a. The internal ground of the coal conveying gallery 1 to be flushed is regarded as an external flow field 4 in which a fluid flows;

[0029] b. The internal ground of the coal conveying corridor 1 is used as the external flow field 4 of the water flushing fluid flow area, which is also asymmetric. Under this working condition, the flow velocity and streamline of the flushing water show obvious differences in different positions or directions, and do not show symmetry;

[0030] c. Through the water flushing mode of the rotating nozzle 2 on the top surface, a large area of ​​water flushing can be achieved;

[0031] d. Through the water flushing mode of the fixed nozzles 3 on both sides, the asymmetry formed by the large-area water flushing of the rotating nozzle 2 is interfered and homogenized;

[0032] e. Use automation technology to control the duration of water flushing of the rotating nozzle 2 and the fixed nozzle 3;

[0033] f. Use automation technology to control the blowing and flushing range of the rotating nozzle 2 water and the fixed nozzle 3.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for surface flushing by asymmetric interference homogenization of an external flow field, characterized in that: The ground flushing method is arranged inside the coal conveying gallery, and the ground flushing method includes a rotating nozzle and a fixed nozzle. The fixed nozzle is arranged on both sides of the coal conveying gallery of the rotating nozzle, and the rotating nozzle is arranged on the top of the coal conveying gallery. The horizontal axis of the rotating shaft of the rotating nozzle is aligned with the axis of the fixed nozzles on both sides. The specific implementation method of the ground flushing method is as follows; a. The internal ground of the coal conveying gallery to be flushed is regarded as an external flow field of a fluid flow area; b. The internal ground of the coal transportation corridor is the external flow field of the water flushing fluid flow area, which is also asymmetric. Under this working condition, the flow velocity and streamline of the flushing water show obvious differences in different positions or directions, and do not show symmetry; c. Through the water flushing mode of the rotating nozzle on the top surface, a large area of ​​water flushing can be achieved; d. Through the water flushing mode of the fixed nozzles on both sides, the asymmetry formed by the large-area water flushing of the rotating nozzle is interfered and homogenized; e. Use automation technology to control the duration of water flushing of rotating nozzles and fixed nozzles; f. Use automation technology to control the blowing and flushing range of rotating nozzle water and fixed nozzle.

2. The method for flushing the ground by asymmetric interference homogenization of the external flow field according to claim 1 is characterized in that: The coal conveying corridor is a long closed corridor, the inner bottom of the coal conveying corridor is longitudinally conductively provided with a coal conveyor belt, the left and right sides of the coal conveyor belt are provided with pedestrian walkways, and the outer side of the umbrella-free conveyor belt is outwardly provided with a protective cover.

3. The method for flushing the ground by asymmetric interference homogenization of the external flow field according to claim 2 is characterized in that: The top surface of the protective outer cover is longitudinally equidistantly provided with a plurality of rotating nozzles, and the left and right sides of each rotating nozzle are provided with fixed nozzles with cross sections flush with each other.

4. The method for flushing the ground by asymmetric interference homogenization of the external flow field according to claim 1 is characterized in that: The rotating nozzle is a large-range rotating nozzle. The rotating axis of the rotating nozzle is aligned with the longitudinal center of the coal conveying corridor. The shape of the water flushing fluid of the rotating nozzle is a spherical arc cover shape. The spacing between several rotating nozzles is greater than twice the spray radius of the rotating nozzle water.

5. The method for flushing the ground by asymmetric interference homogenization of the external flow field according to claim 1, characterized in that: The fixed nozzles are fan-shaped direct-injection nozzles, all of which are directed toward the middle of the coal conveying gallery, and the spray angle of the fixed nozzles is 90 degrees to that of the rotating nozzles.

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