Coal-water metering and separating device

Abstract

The utility model belongs to the technical field of coal mining and mine water treatment, and discloses a coal water metering and separating device, a crossing drilling hydraulic punching device, a coal water collecting unit, a coal water separating unit, a coal water metering unit and a circulating water treatment unit. The coal-water separation unit comprises a crushing device, a coal-water storage box and a solid-liquid separation vibrating screen, the crushing device is connected with the blowout prevention box, and the coal-water metering unit comprises a metering pipeline. According to the scheme, efficient recovery of pulverized coal, accurate metering of a coal-water mixture and cyclic utilization of water resources are achieved, the pulverized coal recovery rate is increased, pulverized coal loss is reduced, the coal-water separation effect is optimized, meanwhile, water resource consumption is reduced, the economical efficiency and the environmental protection property of hydraulic punching operation are improved, and the economic benefit is increased. And the coal mine production efficiency and the resource utilization rate can be improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining and mine water treatment technology, and in particular to a coal-water metering and separation device. Background Technology

[0002] Hydraulic perforation is a technology widely used in coal mine gas extraction and coal seam permeability enhancement. Its principle is to use high-pressure water jets to flush the coal seam, breaking the coal body and forming perforation channels. During the hydraulic perforation process, coal dust will form a coal-water mixture with the water flow. The treatment of this mixture is crucial for coal mine production safety, coal dust recycling and water resource circulation.

[0003] Traditional coal-water mixture treatment methods often have the following problems:

[0004] 1. Low coal powder recovery rate: Conventional sedimentation methods are prone to coal powder loss and cannot effectively separate fine coal powder particles;

[0005] 2. Serious waste of water resources: Wastewater after coal-water separation is not recycled, resulting in excessive water consumption;

[0006] 3. Inaccurate measurement: Existing methods for measuring coal-water mixtures often lack real-time capability, making it impossible to accurately measure coal powder content and water flow rate, which affects the evaluation of punching effect. Utility Model Content

[0007] This utility model aims to provide a coal-water metering and separation device to solve the problems mentioned in the background art. This solution integrates coal-water collection, separation, metering and recycling functions to achieve efficient coal powder recovery, accurate metering of coal-water mixture and recycling of water resources. This solution improves the coal powder recovery rate, reduces coal powder loss, optimizes the coal-water separation effect, reduces water consumption, improves the economy and environmental protection of hydraulic punching operations, and helps to improve coal mine production efficiency and resource utilization.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A coal-water metering and separation device includes a hydraulic perforation device for drilling through layers, a coal-water collection unit, a coal-water separation unit, a coal-water metering unit, and a circulating water treatment unit. The coal-water collection unit includes a blowout preventer box connected to the hydraulic perforation device for drilling through layers. The coal-water separation unit includes a crushing device, a coal-water storage tank, and a solid-liquid separation vibrating screen. The crushing device is connected to the blowout preventer box. The coal-water metering unit includes a metering pipeline connected to the coal-water storage tank. The circulating water treatment unit includes a filter press and a perforation pump. The filter press is connected to the solid-liquid separation screen, and the perforation pump is connected to the hydraulic perforation device for drilling through layers.

[0010] Preferably, the blowout preventer includes an outer shell, with inlet and outlet pipes connected to the inner cavity at both ends of the outer shell, and multiple outlet pipes connected to the inner cavity at the top.

[0011] Preferably, the inner cavities of the feed pipe and the discharge pipe are both configured as conical structures, and the inner walls of the outer shell and the discharge pipe are respectively connected to a plurality of first buffer plates and a plurality of second buffer plates that are inclined and staggered.

[0012] Preferably, the crushing device is located upstream of the coal-water storage tank, and a slurry pump is connected inside the coal-water storage tank. The solid-liquid separation vibrating screen is connected to the slurry pump through a pipeline, and a weighing sensor and a flow sensor are connected to the metering pipeline respectively.

[0013] Preferably, the circulating water treatment unit further includes a sedimentation tank, which is connected to a filter press via a pipeline. A clean water pump is connected inside the sedimentation tank and is connected to a flushing pump.

[0014] The operating method of the coal-water metering and separation device includes:

[0015] S1: Collects the coal-water mixture after hydraulic punching through the coal-water collection unit;

[0016] S2: Separate the coal-water mixture through the coal-water separation unit;

[0017] S3: Metering of pulverized coal and water through a coal-water metering unit;

[0018] S4: The separated water is treated by the circulating water treatment unit and then sent back to the hydraulic punching system.

[0019] Preferably, S1 collects the coal-water mixture generated after hydraulic punching through a blowout preventer and transports it to the crushing device.

[0020] Preferably, S2 crushes large coal pieces using a crushing device and transfers the crushed coal-water mixture to a coal-water storage tank for initial settling. Then, the coal-water mixture is transported to a solid-liquid separation vibrating screen via a metering pipeline and a slurry pump. The solid-liquid separation vibrating screen achieves efficient separation of coal powder and water, and the separated water is moved to a filter press.

[0021] Preferably, S3 measures the mass of the coal-water mixture using a weighing sensor in the metering pipeline, monitors the flow rate of the coal-water mixture using a flow sensor, and then calculates the coal powder recovery rate using a data processing module.

[0022] Preferably, in step S4, the fine coal slurry in the water is filtered by a filter press, and then the filtered water is sent to a sedimentation tank for clarification. Subsequently, the treated water is returned to the perforation pump by a clean water pump, and then introduced into the hydraulic perforation device for through-layer drilling to achieve water resource recycling.

[0023] The beneficial effects of this technical solution compared to existing technologies are as follows:

[0024] This solution integrates coal-water collection, separation, metering, and recycling functions, achieving efficient coal powder recovery, accurate metering of coal-water mixtures, and water resource recycling. It improves coal powder recovery rate, reduces coal powder loss, optimizes coal-water separation, and lowers water consumption, enhancing the economic and environmental benefits of hydraulic drilling operations and contributing to improved coal mine production efficiency and resource utilization. Attached Figure Description

[0025] Figure 1 The process flow diagram provided for this utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of the blowout preventer box in this utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure of the blowout preventer box in this utility model.

[0028] Reference numerals in the attached drawings: 1. Coal-water collection unit; 2. Coal-water separation unit; 3. Coal-water metering unit; 4. Circulating water treatment unit; 11. Outer shell; 12. Feed pipe; 13. Discharge pipe; 14. One-way exhaust valve; 15. First buffer plate; 16. Second buffer plate. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0030] like Figure 1The coal-water metering and separation device shown includes a hydraulic perforation device for drilling through layers, a coal-water collection unit 1, a coal-water separation unit 2, a coal-water metering unit 3, and a circulating water treatment unit 4. The coal-water collection unit 1 includes a blowout preventer (BOP) box connected to the hydraulic perforation device for drilling through layers. The coal-water separation unit 2 includes a crushing device, a coal-water storage tank, and a solid-liquid separation vibrating screen. The crushing device is connected to the BOP box. The coal-water metering unit 3 includes a metering pipeline connected to the coal-water storage tank. The circulating water treatment unit 4 includes a pressure... The filter press and the perforating pump are connected. The filter press and the solid-liquid separation screen are connected. The perforating pump is connected to the hydraulic perforation device for drilling through layers. The crushing device is located upstream of the coal-water storage tank. A slurry pump is connected inside the coal-water storage tank. The solid-liquid separation vibrating screen is connected to the slurry pump through a pipeline. A weighing sensor and a flow sensor are connected to the metering pipeline. The circulating water treatment unit 4 also includes a sedimentation tank. The sedimentation tank is connected to the filter press through a pipeline. A clean water pump is connected inside the sedimentation tank. The clean water pump is connected to the perforating pump.

[0031] In this embodiment, the coal-water collection unit 1 includes a blowout preventer box, which is installed at the outlet of the hydraulic perforation system to collect the coal-water mixture and prevent coal-water from splashing. The coal-water mixture enters the coal-water separation unit 2 from the blowout preventer box.

[0032] The blowout preventer includes an outer shell 11. Both ends of the outer shell 11 are conveniently connected to an inlet pipe 12 and an outlet pipe 13 that communicate with the inner cavity. The top of the outer shell 11 is connected to multiple outlet pipes 13 that communicate with the inner cavity. The inner cavities of the inlet pipe 12 and the outlet pipe 13 are both designed as conical structures. The inner walls of the outer shell 11 and the outlet pipe 13 are respectively connected to multiple first buffer plates 15 and multiple second buffer plates 16 that are inclined and staggered.

[0033] In this embodiment, the feed pipe 12 can be installed at the outlet of the punching borehole via a flange connection and connected to the coal-water conveying pipeline. The conical shape of the inner cavity of the feed pipe 12 can slow down the flow velocity of the coal-water mixture and prevent high-speed jets from scouring the inner wall of the outer shell 11. During coal mining operations, methane gas inside the coal seam may be released during the punching process and enter the coal-water mixture. If the gas is not vented in time, it may accumulate in the pipeline or storage equipment, affecting fluid flow and even causing safety hazards. Therefore, the multiple one-way venting valves 14 in this solution can help... The coal-water mixture changes its flow direction and slows down its flow rate, allowing sufficient time for the gas to rise and the coal and water to sink. The rising gas can be discharged through the one-way exhaust valve 14. The one-way exhaust valve 14 can prevent coal and water from overflowing, but ensure that the gas is discharged smoothly. After the coal-water mixture is separated from the gas, it is finally discharged into the crushing device through the discharge pipe 13. The multiple second buffer plates 16 installed in the discharge pipe 13 can buffer the falling coal-water mixture, reduce its falling speed, prevent it from impacting the crushing device, and maintain flow stability.

[0034] The coal-water separation unit 2 includes a crushing device, a coal-water storage tank, a slurry pump, and a solid-liquid separation vibrating screen. The crushing device is installed upstream of the coal-water storage tank to crush larger coal blocks. The coal-water storage tank is used to temporarily store the coal-water mixture, allowing some solid particles to settle. The slurry pump is connected to the coal-water storage tank and the solid-liquid separation vibrating screen to transport the coal-water mixture to the solid-liquid separation vibrating screen. The solid-liquid separation vibrating screen is used to further separate coal powder and water, and the separated coal powder can be further recycled.

[0035] The coal-water metering unit 3 includes a metering pipeline, a weighing sensor, and a flow sensor. The metering pipeline is installed on the coal powder conveying path. The weighing sensor is used to measure the coal-water quality, and the flow sensor is used to monitor the flow rate of the coal-water mixture. The data processing module receives the sensor data and calculates the coal powder content and water flow rate to provide real-time metering information.

[0036] The circulating water treatment unit 4 includes a filter press, a sedimentation tank, a clean water pump, and a flushing pump. The filter press is used to remove water from the solid-liquid separation vibrating screen and filter out fine particles in the water. The filtered water enters the sedimentation tank for sedimentation. The clean water pump draws the clean water from the sedimentation tank into the flushing pump, and then the flushing pump returns the water to the hydraulic flushing device to realize the recycling of water resources.

[0037] like Figure 1 The method of using the coal-water metering and separation device shown includes:

[0038] S1: Collects the coal-water mixture after hydraulic punching through coal-water collection unit 1;

[0039] S2: The coal-water mixture is separated by the coal-water separation unit 2;

[0040] S3: The coal powder and water are measured through the coal-water metering unit 3;

[0041] S4: The separated water is processed by the circulating water treatment unit 4 and then sent back to the hydraulic punching system.

[0042] S1 collects the coal-water mixture generated after hydraulic perforation through a blowout preventer and transports it to a crushing device. S2 crushes large coal pieces through the crushing device and transfers the crushed coal-water mixture to a coal-water storage tank for initial settling. Then, through a metering pipeline and a slurry pump, the coal-water mixture is transported to a solid-liquid separation vibrating screen. The solid-liquid separation vibrating screen achieves efficient separation of coal powder and water, and the separated water is moved to a filter press. S3 measures the mass of the coal-water mixture through a weighing sensor in the metering pipeline and monitors the flow rate of the coal-water mixture through a flow sensor. The coal powder recovery rate is then calculated through a data processing module. S4 filters the fine coal sludge in the water through the filter press and then clarifies the filtered water in a sedimentation tank. Subsequently, the treated water is returned to the perforation pump through a clean water pump and then introduced into the hydraulic perforation device for through-layer drilling to achieve water resource recycling.

[0043] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A coal-water metering and separation device, characterized in that, include: Hydraulic punching device for drilling through layers; A coal-water collection unit (1) includes a blowout preventer box, which is connected to a hydraulic flushing device for through-layer drilling. The coal-water separation unit (2) includes a crushing device, a coal-water storage tank and a solid-liquid separation vibrating screen, wherein the crushing device is connected to a blowout preventer. A coal-water metering unit (3) includes a metering pipeline connected to a coal-water storage tank. The circulating water treatment unit (4) includes a filter press and a perforating pump. The filter press is connected to a solid-liquid separation screen, and the perforating pump is connected to a hydraulic perforation device for drilling through layers.

2. The coal-water metering and separation device as described in claim 1, characterized in that: The blowout preventer includes an outer shell (11), with a feed pipe (12) and a discharge pipe (13) that communicate with the inner cavity at both ends of the outer shell (11), and a plurality of discharge pipes (13) that communicate with the inner cavity at the top end of (1).

3. The coal-water metering and separation device as described in claim 2, characterized in that: The inner cavities of the feed pipe (12) and the discharge pipe (13) are both set as conical structures. The inner walls of the outer shell (11) and the discharge pipe (13) are respectively connected to a plurality of first buffer plates (15) and a plurality of second buffer plates (16) that are inclined and staggered.

4. The coal-water metering and separation device as described in claim 1, characterized in that: The crushing device is located upstream of the coal-water storage tank, and a slurry pump is connected inside the coal-water storage tank. The solid-liquid separation vibrating screen is connected to the slurry pump through a pipeline, and a weighing sensor and a flow sensor are connected to the metering pipeline respectively.

5. The coal-water metering and separation device as described in claim 1, characterized in that: The circulating water treatment unit (4) also includes a sedimentation tank, which is connected to a filter press via a pipe. A clean water pump is connected inside the sedimentation tank and is connected to a flushing pump.

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