Dynamic screening, metering and transferring system for underground slag water of coal mine

Abstract

The utility model belongs to the field of coal mine underground mechanical design, and relates to a coal mine underground slag water dynamic screening, metering and transferring system which comprises a first hose conveying module, a solid-liquid separation module, a dynamic weighing module and a second hose conveying module which are connected in sequence. The first hose conveying module is used for conveying a slag-water mixture discharged in the drilling and punching process to the solid-liquid separation module from a slag discharging pipe. The solid-liquid separation module is used for separating the slag-water mixture into wet slag and water, and the wet slag falls into the dynamic weighing module; the dynamic weighing module is used for weighing the wet slag in real time and conveying the weighed wet slag to the hose conveying module II; and the second hose conveying module is used for conveying the weighed wet slag to a roadway conveying belt. According to the utility model, through the cooperation of the hose conveying module, the solid-liquid separation module and the dynamic weighing module, the automatic metering and transferring functions of the drilling slag are realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of coal mine underground machinery design relates to a coal mine underground slag water dynamic screening metering transfer system. BACKGROUND

[0002] In the field of coal mining, with the increasing mining depth, the geological conditions of coal seam change significantly, which leads to the significant reduction of coal seam permeability coefficient and the complexity of gas preservation conditions. On the one hand, the coal seam gas pressure and ground stress increase with the increase of buried depth, and the outburst danger increases sharply; on the other hand, the traditional gas extraction method is difficult to implement effectively due to the reduction of coal seam permeability, and it is urgent to develop efficient permeability enhancement and intensified extraction technology. Therefore, the industry widely adopts the integrated operation mode of hydraulic punching in the outburst coal seam bottom drainage lane, and the core process includes five key links of "drilling, prevention, punching, screening and metering": drilling holes through the crawler drill (drilling), building a safety protection system by using the orifice blowout prevention module and the air extraction mechanism (prevention), carrying out crack permeability operation by using the high-pressure hydraulic punching pump (punching), and subsequently screening and metering the coal-water mixture by using the coal-water separation module (screening), and finally realizing the quantitative conveying of coal slag into the scraper conveyor (metering).

[0003] In the prior art system, the "drilling, prevention and punching" links have formed mature equipment configuration, such as crawler drill, orifice blowout prevention device and mud pump truck, etc. However, there are still significant technical defects in the "screening and metering" links. The currently widely used vibrating screen separation device can realize the initial separation of coal and water at the initial stage of operation, but there are three major problems: first, the screen mesh is easy to adhere to coal slime, causing pore blockage, resulting in an exponential decline in separation efficiency over time, and frequent shutdown for cleaning is required; second, after blockage, the water content of the separated product increases sharply, and an additional metering tank is required for secondary sedimentation and dewatering, forming a "screening-sedimentation" double process, which seriously restricts the continuity of the operation process; third, the operation of the vibrating screen produces high-intensity noise (measured above 110 dB), which forms serious acoustic pollution in the enclosed roadway environment, and long-term exposure easily induces occupational deafness of the operation personnel. The metering link completely relies on manual operation, and each drilling hole produces an average of 5 tons of coal slag, which needs to be repeatedly shovelled and transported to the metering iron box, and then the metering iron box is manually shovelled out. This mode has four major drawbacks: first, the labor intensity is extremely high, and a full-time coal shoveling worker is required for single operation, which is not in line with the development direction of modern coal mines to reduce labor and improve efficiency; second, the manual metering error rate is more than 15%, which seriously affects the accurate regulation and control of gas extraction parameters; third, the time sequence conflict between coal shoveling operation and drill operation increases the additional shutdown waiting time of 30-45 minutes per hole, resulting in a decrease in equipment utilization rate; fourth, repeated shutdown during drilling exposure significantly increases the risk of secondary disasters such as hole collapse and drill burying.

[0004] In summary, the existing hydraulic punching integrated operation system has poor equipment reliability, low automation level, and unbalanced man-machine efficiency in the end-of-line treatment link, which has become a bottleneck problem restricting the large-scale popularization and application of the technology. Therefore, developing intelligent equipment with self-cleaning screening function and continuous metering capacity is of great significance to improve the efficiency of coal mine gas control and ensure safety in production. Practical new type content

[0005] Therefore, the purpose of the present application is to provide a coal mine underground slag water dynamic screening and metering transfer system to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] A coal mine underground slag water dynamic screening and metering transfer system, comprising a hose conveying module one, a solid-liquid separation module, a dynamic weighing module and a hose conveying module two connected in sequence;

[0008] The hose conveying module one is used to convey the slag water mixture discharged from the slag discharge pipe during the drilling and punching process to the solid-liquid separation module;

[0009] The solid-liquid separation module is used to separate the slag water mixture into wet slag and water, and the wet slag falls into the dynamic weighing module;

[0010] The dynamic weighing module is used to weigh the wet slag in real time, and convey the weighed wet slag to the hose conveying module two;

[0011] The hose conveying module two is used to convey the weighed wet slag to the roadway transportation belt.

[0012] Further, the hose conveying module one and the hose conveying module two are the same in structure, and each comprises a hydraulic motor one, a universal auger and a wear-resistant conveying hose; the hydraulic motor one drives the universal auger arranged in the wear-resistant conveying hose to rotate, and pushes the slag water mixture or the wet slag from the feeding port to the discharging port.

[0013] Further, the hydraulic motor one is connected to one end of the universal auger close to the discharging port.

[0014] Further, the solid-liquid separation module comprises a hydraulic motor two, a plurality of laminations and a plurality of parallelly arranged grid bars, the plurality of laminations are alternately rotatably installed on the grid bars, and the hydraulic motor two drives the laminations to rotate, so that the laminations push the wet slag to move in one direction, and the water flows down through the gaps between the parallelly arranged grid bars.

[0015] Further, the solid-liquid separation module further comprises a solid-liquid separation cavity, the solid-liquid separation cavity is provided with a residue-water mixture feeding port and a wet residue outlet connected with the hose conveying module one and the dynamic weighing module respectively, and a drain pipe is arranged at the bottom of the solid-liquid separation cavity to drain water to a roadway drainage channel or an external drain pipe, and the hydraulic motor two is installed on the solid-liquid separation cavity and drives a plurality of laminations to rotate through a gear.

[0016] Further, the dynamic weighing module comprises a hydraulic motor three, a weighing belt, a weighing sensor and an encoder; the hydraulic motor three drives the weighing belt to rotate, and the wet residue is processed by the weighing sensor and the encoder when passing through the weighing belt, so as to record the weight of the wet residue in real time.

[0017] Further, the weighing belt is connected with the wet residue outlet of the solid-liquid separation module and the feeding port of the hose conveying module two at two ends respectively, the weighing sensor is arranged at the bottom of the weighing belt, and the encoder is arranged on a rotating shaft in the weighing belt to cooperate with the weighing sensor to process data.

[0018] Further, the dynamic weighing module further comprises a storage for recording data.

[0019] Further, the hose conveying module one, the solid-liquid separation module, the dynamic weighing module and the hose conveying module two are arranged on the tracked undercarriage, so as to facilitate movement.

[0020] The beneficial effects of the utility model lie in:

[0021] 1、The utility model discloses a hose conveying module, a solid-liquid separation module and a dynamic weighing module are cooperated, realize the automatic measurement and transfer function of the drill residue.

[0022] 2、The technical scheme effectively maintains the cleanliness and safety of the roadway construction environment through closed-loop transportation of the slag water. The hose conveying module directly conveys the slag water mixture from the orifice to the treatment unit, avoiding the scattering and accumulation of the slag water in the roadway. After solid-liquid separation, the water is discharged into the roadway drainage system through the drain pipe, and the wet slag is conveyed by the subsequent hose to the transportation belt, realizing whole-process non-falling treatment. This design not only reduces the workload of secondary cleaning of the roadway, but also prevents corrosion of the slag water to the roadway equipment and structure, prolonging the service life of the equipment. Compared with the traditional open transportation, the innovative closed-loop system exhibits significant environmental protection advantages and practical value, providing a more efficient and clean solution for roadway construction.

[0023] 3、The modular design of the utility model imparts the system with strong adaptability and maintenance convenience. The hose conveying module, the solid-liquid separation module and the dynamic weighing module independently operate, facilitating flexible deployment and adjustment in the narrow and variable environment of the coal mine underground. The tracked undercarriage equipped in the system further improves the mobility, which can quickly adapt to the requirements of different operation points. In addition, the key components made of wear-resistant conveying hose and high-durability materials significantly prolong the service life, reduce the maintenance frequency and cost. The combination of modularity and high durability not only embodies the innovativeness of the technical scheme, but also brings significant economic benefits to practical application by reducing maintenance costs and improving applicability, especially suitable for long-term use under complex working conditions.

[0024] Other advantages, objects and features of the utility model will be described in the subsequent specification to some extent, and to some extent, it will be obvious to those skilled in the art based on the study of the following text or can be taught from the practice of the utility model. The objects and other advantages of the utility model can be realized and obtained through the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to make the objects, technical schemes and advantages of the utility model more clear, the preferred detailed description of the utility model will be described below in combination with the drawings, in which:

[0026] Figure 1 The working process schematic diagram of the slag water dynamic screening and metering transfer system in the embodiment of a coal mine underground;

[0027] Figure 2 The structure schematic diagram of the slag water dynamic screening and metering transfer system in the embodiment of a coal mine underground;

[0028] Figure 3 The structure schematic diagram of the hose conveying module one in the embodiment;

[0029] Figure 4 The working principle diagram of the solid-liquid separation module in the embodiment.

[0030] Drilling site drilling rig 1, blowout preventer 2, deslagging pipe 3, hose conveying module one 4, solid-liquid separation module 5, dynamic weighing module 6, hose conveying module two 7, drain pipe 8, crawler carrier 9, roadway transport belt 10;

[0031] Hose conveying inlet one 41, wear-resistant conveying hose 42, universal auger 43, hose conveying outlet one 44, hydraulic motor one 45, hydraulic motor two 51, laminated sheet 52, grid 53, weighing belt 61, weighing sensor 62, hydraulic motor three 63, encoder 64, hose conveying inlet two 71, hose conveying outlet two 72. DETAILED DESCRIPTION

[0032] The other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the specification. The present application can also be implemented or applied by different specific embodiments, and various modifications or changes can be made to the details in the specification without departing from the spirit of the present application. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0033] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0034] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only for illustrative purposes, and cannot be understood as a limitation of the present application, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0035] Embodiment 1

[0036] Please refer to Figures 1-2The utility model provides a kind of coal mine underground slag water dynamic screening metering transfer system, including sequentially connected hose conveying module one 4, solid-liquid separation module 5, dynamic weighing module 6 and hose conveying module two 7, and all modules are installed on tracked bottom car 9, it is convenient to move and use in coal mine underground.

[0037] The hose conveying module one 4 is used to transport the slag water mixture discharged from the slag discharge pipe 3 to the solid-liquid separation module 5 during the drilling and punching process.

[0038] The solid-liquid separation module 5 is used to separate the slag water mixture into wet slag and water, and the wet slag falls into the dynamic weighing module 6.

[0039] The dynamic weighing module 6 is used to weigh the wet slag in real time and transport the weighed wet slag to the hose conveying module two 7.

[0040] The hose conveying module two 7 is used to transport the weighed wet slag to the roadway transportation belt 10.

[0041] Specifically, the hose conveying module one 4: its feeding port (i.e. hose conveying feeding port one 41) is connected to the slag discharge pipe 3, used to receive the slag water mixture discharged from the hole port blowout preventer 2 and the slag discharge pipe 3 by the drilling rig 1 in the drilling field during the drilling and punching process, and transport it to the solid-liquid separation module 5 through the discharge port (i.e. hose conveying discharge port one 44).

[0042] The solid-liquid separation module 5: receives the slag water mixture from the hose conveying module one 4, separates it into wet slag and water. The separated wet slag falls into the dynamic weighing module 6, and the water is discharged through the drain pipe 8 to the roadway drainage channel or external drain pipe.

[0043] The dynamic weighing module 6: weighs the wet slag in real time and transports the weighed wet slag to the feeding port (i.e. hose conveying feeding port two 71) of the hose conveying module two 7.

[0044] The hose conveying module two 7: its discharge port (i.e. hose conveying discharge port two 72) is connected to the roadway transportation belt 10, to transport the weighed wet slag to the belt and complete the transfer.

[0045] The working process is as follows:

[0046] Slag water input: when the drilling rig 1 drills or punches, the slag water mixture flows into the hose conveying feeding port one 41 of the hose conveying module one 4 through the hole port blowout preventer 2 and the slag discharge pipe 3.

[0047] Initial conveying: the hose conveying module one 4 conveys the slag water mixture to the solid-liquid separation module 5.

[0048] Solid-liquid separation: the solid-liquid separation module 5 separates the slag water mixture into wet slag and water, the water is discharged through the drain pipe 8, and the wet slag falls into the dynamic weighing module 6.

[0049] Dynamic weighing: The dynamic weighing module 6 weighs the wet slag in real time and sends the weighed wet slag to the hose conveying module two 7.

[0050] Final transfer: The hose conveying module two 7 conveys the weighed wet slag from the hose conveying discharge port two 72 to the roadway transportation belt 10, completing the entire transfer process.

[0051] In this embodiment, each module can use conventional devices in the prior art. The key is the cooperation of each module, not the specific structure of each module. This embodiment realizes the automatic conveying, separation, weighing and transfer of the slag-water mixture through modular cooperation design, which is simple to operate, suitable for use in narrow environment underground coal mines, improves work efficiency and reduces manual intervention

[0052] Embodiment 2

[0053] Please refer to Figures 1-4 , this embodiment describes the specific structure and function of each module in the coal mine underground slag-water dynamic screening metering transfer system based on embodiment 1, which is convenient for understanding the implementation mode of the system.

[0054] 1. Hose conveying module one 4 and hose conveying module two 7

[0055] As shown in Figure 3 , the hose conveying module one 4 and the hose conveying module two 7 have the same structure and include the following components:

[0056] Hose conveying inlet one 41(or hose conveying inlet two 71): as the inlet of the material, respectively receiving the slag-water mixture or the wet slag.

[0057] Wear-resistant conveying hose 42: made of wear-resistant material, with a universal auger 43 arranged inside, having a certain flexibility, which can adapt to the complex terrain in the roadway.

[0058] Universal auger 43: spiral structure, installed in the wear-resistant conveying hose 42, driven to rotate by hydraulic motor one 45, pushing the material to move from the inlet to the outlet.

[0059] Hose conveying discharge port one 44(or hose conveying discharge port two 72): the outlet of the material, respectively connected to the solid-liquid separation module 5 or the roadway transportation belt 10.

[0060] Hydraulic motor one 45: installed at one end of the universal auger 43 close to the discharge port, providing rotating power to ensure smooth conveying.

[0061] Working principle: When hydraulic motor 45 is started, it drives universal auger 43 to rotate, and the slag-water mixture or wet slag is moved from the inlet to the outlet under the screw pushing, completing the conveying task. The design of the wear-resistant conveying hose enhances the durability of the module, making it suitable for long-term handling of materials containing solid particles.

[0062] 2. Solid-liquid separation module 5

[0063] As shown in Figure 4 , the solid-liquid separation module 5 includes the following structures:

[0064] Solid-liquid separation cavity (i.e., the cavity for accommodating the grid bars 53, the laminations 52, and the slag-water mixture): provided with a slag-water mixture inlet and a wet slag outlet, respectively connected to the outlet of the hose conveying module 4 and the inlet of the dynamic weighing module 6. The bottom of the cavity is installed with a drain pipe 8.

[0065] Grid bars 53: several bars are arranged side by side in the cavity, with gaps between adjacent grid bars, through which water flows to the bottom for discharge.

[0066] Laminations 52: several laminations are alternately installed on the grid bars 53 and can rotate around the shaft, forming a dynamic separation structure with the grid bars 53.

[0067] Hydraulic motor 2 51: installed on the cavity, connected to the laminations 52 through a gear to drive their rotation.

[0068] Working principle: After the slag-water mixture enters the cavity, hydraulic motor 2 51 drives the laminations 52 to rotate, which pushes the wet slag to move towards the wet slag outlet direction, while the water flows down through the gaps between the grid bars 53 and is discharged through the drain pipe 8. The rotation design of the laminations avoids the accumulation of wet slag, ensuring the continuity of the separation process.

[0069] This module not only realizes the separation of slag and water, but also realizes the dynamic transportation of wet slag, and the rotating laminations effectively prevent the blockage of the gaps between the grid bars.

[0070] 3. Dynamic weighing module 6

[0071] The dynamic weighing module 6 adopts a belt weighing technology, including the following components:

[0072] Weighing belt 61: connected at both ends to the wet slag outlet of the solid-liquid separation module 5 and the hose conveying inlet 2 71 of the hose conveying module 2 7, respectively, for carrying and conveying wet slag.

[0073] Hydraulic motor 3 63: drives the weighing belt 61 to rotate, ensuring smooth passage of the wet slag.

[0074] Weighing sensor 62: installed at the bottom of the weighing belt 61, which detects the weight of the wet slag in real time.

[0075] Encoder 64: installed on the rotating shaft of the weighing belt 61, matched with the weighing sensor 62, processes and records the weight data.

[0076] Storage: used for storing the weighing data for subsequent viewing and analysis.

[0077] Working principle: the wet slag falls on the weighing belt 61 from the solid-liquid separation module 5, the hydraulic motor 63 drives the belt to rotate, and the weighing sensor 62 and the encoder 64 collect and process the weight data in real time when the wet slag passes, which is recorded in the storage, and then the wet slag is sent to the hose conveying module 7. The design realizes dynamic and accurate measurement of the wet slag.

[0078] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A dynamic screening, metering, and transfer system for slag and water in underground coal mines, characterized in that, It includes a hose delivery module 1, a solid-liquid separation module, a dynamic weighing module, and a hose delivery module 2 connected in sequence; The hose delivery module 1 is used to transport the slag-water mixture discharged during drilling and punching from the slag discharge pipe to the solid-liquid separation module; The solid-liquid separation module is used to separate the slag-water mixture into wet slag and water, with the wet slag falling into the dynamic weighing module. The dynamic weighing module is used to weigh the wet slag in real time and transport the weighed wet slag to the hose conveying module 2. The second flexible hose conveying module is used to transport the weighed wet slag to the roadway conveyor belt.

2. The dynamic screening, metering, and transfer system for slag and water in underground coal mines according to claim 1, characterized in that, The hose conveying module one and hose conveying module two have the same structure, both including a hydraulic motor one, a universal auger and a wear-resistant conveying hose; the hydraulic motor one drives the universal auger arranged in the wear-resistant conveying hose to rotate, pushing the slag-water mixture or wet slag from the inlet to the outlet.

3. The dynamic screening, metering, and transfer system for slag and water in underground coal mines according to claim 2, characterized in that, The hydraulic motor is connected to one end of the universal auger near the discharge port.

4. The dynamic screening, metering, and transfer system for slag and water in underground coal mines according to claim 1, characterized in that, The solid-liquid separation module includes a hydraulic motor, a stack of plates, and several parallel grid bars. The stack of plates is alternately rotated and mounted on the grid bars. The hydraulic motor drives the stack of plates to rotate, causing the stack of plates to push the wet residue in one direction, and water flows down through the gaps between the parallel grid bars.

5. The dynamic screening, metering, and transfer system for slag and water in underground coal mines according to claim 4, characterized in that, The solid-liquid separation module also includes a solid-liquid separation chamber, which has a slag-water mixture inlet and a wet slag outlet that are respectively connected to the hose conveying module one and the dynamic weighing module. A drain pipe is provided at the bottom of the solid-liquid separation chamber to discharge water to the tunnel drainage ditch or an external drainage pipe. The hydraulic motor two is installed on the solid-liquid separation chamber and drives several stacked blades to rotate through gears.

6. The dynamic screening, metering, and transfer system for slag and water in underground coal mines according to claim 1, characterized in that, The dynamic weighing module includes a hydraulic motor, a weighing belt, a weighing sensor, and an encoder. The hydraulic motor drives the weighing belt to rotate, and the weighing sensor and encoder process the data as the wet slag passes through the weighing belt, recording the weight of the wet slag in real time.

7. The dynamic screening, metering, and transfer system for slag and water in underground coal mines according to claim 6, characterized in that, The weighing belt is connected at both ends to the wet residue outlet of the solid-liquid separation module and the feed inlet of the second hose conveying module, respectively. The weighing sensor is arranged at the bottom of the weighing belt, and the encoder is arranged on the rotating shaft in the weighing belt to process data in conjunction with the weighing sensor.

8. The dynamic screening, metering, and transfer system for slag and water in underground coal mines according to claim 6, characterized in that, The dynamic weighing module also includes a storage device for recording data.

9. The dynamic screening, metering, and transfer system for slag and water in underground coal mines according to claim 1, characterized in that, The hose conveying module one, solid-liquid separation module, dynamic weighing module, and hose conveying module two are all arranged on the tracked undercarriage for easy movement.

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