Coal slurry water separation system

Abstract

The present disclosure relates to the technical field of coal slurry water treatment, and particularly relates to a coal slurry water separation system, comprising: a collecting part used for collecting and transporting coal slurry sewage generated by a flushing operation of a coal conveying trestle and a transfer station; a dewatering part used for separating the coal slurry sewage; and a control part used for controlling the collecting part to collect and transport the coal slurry sewage, and used for adjusting a working condition of the dewatering part according to a treatment state of the coal slurry sewage. In this way, each dewatering step can be automatically performed, so that automatic control of the entire system is realized, unattended operation is realized, and labor cost is reduced.

Description

Technical Field

[0001] This disclosure relates to the technical field of coal slurry water treatment, and more particularly to a coal slurry water separation system. Background Technology

[0002] During coal mine production, coal conveyor bridges and transfer stations experience the accumulation of coal dust particles during belt conveyor operation, requiring surface washing to remove these particles. The resulting mixture of washed coal and water flows down the bridge ramps towards the transfer station area at the tail end of the belt conveyor, causing environmental pollution and resource waste. Traditional coal slurry wastewater treatment methods rely heavily on manual operation, resulting in low efficiency, high costs, and difficulty in achieving automated control, thus failing to meet the demands of modern coal mine production.

[0003] Therefore, it is necessary to propose a coal slurry water separation system to at least partially solve the problems existing in the prior art. Utility Model Content

[0004] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, this disclosure proposes a coal slurry water separation system.

[0006] In view of this, a coal slurry-water separation system is proposed according to an embodiment of the present disclosure, comprising: The collection section is used to collect and transfer coal slurry wastewater generated during the washing operations of the coal conveyor bridge and transfer station; The dewatering section is used to separate the aforementioned coal slime wastewater; The control unit is used to control the collection and transfer of the coal slurry wastewater by the collection unit, and to adjust the operating conditions of the dewatering unit according to the treatment status of the coal slurry wastewater.

[0007] In one feasible implementation, the collection unit includes: The water collection hopper is used to collect the aforementioned coal slurry wastewater; The spiral dewatering conveyor is used to perform a primary dewatering operation on the coal slime wastewater in the aforementioned water collection hopper to obtain primary dewatered material, and to transport the primary dewatered material to the aforementioned dewatering section. The first discharge pipe through which the dehydrated material is discharged to the dehydration section.

[0008] In one feasible implementation, the collection unit further includes: Buffer pool; An overflow pipe is installed in the aforementioned water collection hopper. When the liquid level of the coal slurry wastewater in the aforementioned water collection hopper reaches a preset height, the wastewater is transported to the aforementioned buffer tank through the aforementioned overflow pipe.

[0009] In one feasible implementation, the dehydration section includes: A dewatering screen, connected to the first discharge pipe, is used to perform a secondary dewatering operation on the primary dewatered material to obtain coal blocks on the dewatering screen and secondary dewatered material under the dewatering screen, wherein the secondary dewatered material flows to the buffer tank. A screw conveyor is connected to the dewatering screen, and the coal blocks on the dewatering screen are transported to the buffer bin via the screw conveyor.

[0010] In one feasible implementation, the dehydration section further includes: The flocculation mixing tank is connected to the aforementioned buffer tank; A mud pump is installed in the aforementioned flocculation mixing tank and is used to pump the material in the aforementioned buffer tank to the aforementioned flocculation mixing tank. A flocculant dosing machine is installed in the aforementioned flocculation mixing tank to add chemicals to the flocculation mixing tank so that the material in the aforementioned buffer tank forms flocs and forms tertiary dewatered material.

[0011] In one feasible implementation, the control unit includes: The first liquid level sensor is used to detect the material liquid level information in the buffer tank. When the material liquid level in the buffer tank is detected to be greater than or equal to 30% of the buffer tank capacity, the control unit controls the mud pump to pump the material in the buffer tank to the flocculation mixing tank and controls the flocculant dosing machine to dosing flocculant for flocculation operation.

[0012] In one feasible implementation, the control unit further includes: The second liquid level sensor is installed in the above-mentioned water collection hopper and is used to detect the liquid level information in the above-mentioned water collection hopper; An audible and visual alarm is activated when the liquid level information detected by the first liquid level sensor and / or the second liquid level sensor is abnormal.

[0013] In one feasible implementation, the dehydration section further includes: A screw filter press, connected to the aforementioned flocculation mixing tank, is used to dewater the materials from the three-stage dewatering process to obtain coal cake and clean water. A horizontal screw conveyor, wherein the aforementioned screw filter press conveys the aforementioned coal cake to the aforementioned screw elevator through a second discharge pipe; The third discharge pipe is through which the aforementioned screw conveyor transports the coal cake to the aforementioned buffer bin.

[0014] In one feasible implementation, the above-mentioned coal slurry water separation system further includes: The first mixer is located in the aforementioned buffer pool.

[0015] In one feasible implementation, the above-mentioned coal slurry water separation system further includes: The aforementioned flocculation mixing tank, screw filter press, and horizontal screw conveyor are installed on the aforementioned installation platform.

[0016] Compared to existing technologies, this disclosure offers at least the following advantages: The coal slurry-water separation system provided in this embodiment includes a collection unit, a dewatering unit, and a control unit. The collection unit collects coal slurry wastewater generated during washing operations at the coal conveyor bridge and transfer station. The collection unit transfers the collected coal slurry wastewater to the dewatering unit for dewatering treatment, thereby separating and collecting the coal and water separately. The control unit controls the operation of the collection unit to achieve automatic collection and transfer of the coal slurry wastewater. Furthermore, the control unit adjusts the operating conditions of the dewatering unit according to the steps of coal slurry wastewater separation and the dewatering treatment status of the wastewater, ensuring that each dewatering step is performed automatically. This achieves automated control of the entire system, enabling unattended operation and reducing labor costs. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic structural diagram of a coal slurry-water separation system according to an embodiment of this disclosure, showing one direction. Figure 2 This is a schematic structural diagram of a coal slurry-water separation system according to an embodiment of the present disclosure, from another perspective.

[0018] in, Figure 1 and Figure 2 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1. Screw elevator, 2. Screw dewatering conveyor, 3. Dewatering screen, 4. Horizontal screw conveyor, 5. Screw filter press, 6. Water collection hopper, 7. Installation platform, 8. Flocculant dosing machine, 9. Buffer tank, 10. Flocculation mixing tank, 11. First mixer, 12. Second mixer, 13. Overflow pipe, 14. Third discharge pipe, 15. Second discharge pipe, 16. First discharge pipe, 17. Dewatering screen discharge port, 18. First liquid level sensor, 19. Second liquid level sensor. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to aid in understanding the present invention, but does not constitute a limitation thereof. The specific structural and functional details disclosed herein are only for describing exemplary embodiments of the present invention. However, the present invention may be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0020] like Figure 1 and Figure 2 As shown, according to an embodiment of this disclosure, a coal slurry water separation system is proposed, comprising a collection unit for collecting and transferring coal slurry wastewater generated during washing operations at a coal conveyor bridge and transfer station; a dewatering unit for separating the coal slurry wastewater; and a control unit for controlling the collection unit to collect and transfer the coal slurry wastewater, and for adjusting the operating conditions of the dewatering unit according to the treatment status of the coal slurry wastewater.

[0021] The coal slurry-water separation system provided in this embodiment includes a collection unit, a dewatering unit, and a control unit. The collection unit collects coal slurry wastewater generated during washing operations at the coal conveyor bridge and transfer station. The collection unit then transfers the collected wastewater to the dewatering unit for dewatering treatment, thereby separating and collecting the coal and water separately. The control unit controls the operation of the collection unit to achieve automatic collection and transfer of the coal slurry wastewater. Furthermore, the control unit adjusts the operating conditions of the dewatering unit according to the steps of coal slurry-water separation and the dewatering status of the wastewater, ensuring that each dewatering step is performed automatically. This achieves automated control of the entire system, enabling unattended operation and reducing labor costs.

[0022] In some examples, such as Figure 1 and Figure 2 As shown, the collection section includes: a water collection hopper 6 for collecting the coal slurry wastewater; a spiral dewatering conveyor 2 for performing a primary dewatering operation on the coal slurry wastewater in the water collection hopper 6 to obtain primary dewatered material, and conveying the primary dewatered material to the dewatering section; and a first discharge pipe 16 through which the primary dewatered material is discharged to the dewatering section.

[0023] Understandably, the collection section can be equipped with a water collection hopper 6, a spiral dewatering conveyor 2, and a first discharge pipe 16. The water collection hopper 6 can be located below the tail end of the conveyor belt at the coal conveying trestle and transfer station to collect coal slurry wastewater generated during the washing operations at the coal conveying trestle and transfer station. The spiral dewatering conveyor 2 transports the coal slurry wastewater collected in the water collection hopper 6 to the dewatering section. During this transport, the coal slurry wastewater undergoes a primary dewatering operation to separate and recover larger coal particles for subsequent use, improving resource utilization and yielding primary dewatered material. The primary dewatered material is discharged through the first discharge pipe 16 to the dewatering section for subsequent dewatering operations.

[0024] It should be noted that the control unit can detect the amount of coal slurry wastewater accumulated in the water collection hopper 6. When the amount of coal slurry wastewater reaches a preset value, the controller controls the operation of the screw dewatering conveyor 2 and the dewatering unit connected to the screw dewatering conveyor 2. If the amount of coal slurry wastewater accumulated in the water collection hopper 6 exceeds the set upper limit, the control unit will issue an audible and visual alarm to prompt the staff to check for abnormal equipment conditions.

[0025] In some examples, such as Figure 1 and Figure 2 As shown, the collection unit also includes: a buffer tank 9; and an overflow pipe 13, which is installed in the water collection hopper 6. When the liquid level of the coal slurry wastewater in the water collection hopper 6 reaches a preset height, it is transported to the buffer tank 9 through the overflow pipe 13.

[0026] It is understandable that the collection section may also be equipped with a buffer tank 9 and an overflow pipe 13. The overflow pipe 13 may be installed in the water collection hopper 6. When the amount of coal slurry wastewater in the water collection hopper 6 accumulates to a preset height, the coal slurry wastewater exceeding the preset height will enter the buffer tank 9 through the overflow pipe 13 for buffering, so as to facilitate further processing and prevent excessive overflow of coal slurry wastewater from the coal slurry water separation system, which would cause environmental pollution and waste of resources.

[0027] In some examples, such as Figure 1 and Figure 2 As shown, the dewatering section includes: a dewatering screen 3, connected to the first discharge pipe 16, for performing a secondary dewatering operation on the primary dewatered material to obtain coal blocks on the dewatering screen 3 and secondary dewatered material below the dewatering screen 3, wherein the secondary dewatered material flows to the buffer tank 9; and a screw conveyor 1, connected to the dewatering screen 3, through which the coal blocks on the dewatering screen 3 are transported to the buffer tank.

[0028] Understandably, the dewatering section can be equipped with a dewatering screen 3 and a screw conveyor 1. The dewatering screen 3 can be connected to a first discharge pipe 16, which discharges the primary dewatered material conveyed by the screw dewatering conveyor 2 onto the dewatering screen 3. The dewatering screen 3 screens the primary dewatered material, with larger coal particles remaining on the screen and being conveyed by the screw conveyor 1 to a belt conveyor, which then transports them to a buffer bin for subsequent use, improving resource utilization. Smaller coal slurry particles are discharged through the dewatering screen discharge pipe 17 to the bottom of the screen 3 as secondary dewatered material. Further, the secondary dewatered material flows into a buffer tank 9 to collect with the coal slurry wastewater overflowing from the collection hopper 6.

[0029] In some examples, such as Figure 1 and Figure 2 As shown, the dewatering section further includes: a flocculation mixing tank 10 connected to the buffer tank 9; a mud pump installed in the flocculation mixing tank 10 for pumping the material in the buffer tank 9 to the flocculation mixing tank 10; and a flocculant dosing machine 8 installed in the flocculation mixing tank 10 for adding flocculants to the flocculation mixing tank 10 so that the material in the buffer tank 9 forms flocs and forms tertiary dewatered material.

[0030] Understandably, the dewatering section may also be equipped with a flocculation mixing tank 10, a mud pump, and a flocculant dosing machine 8. The flocculation mixing tank 10 is connected to the buffer tank 9. The mud pump pumps the secondary dewatered material from the buffer tank 9 and the coal slurry wastewater overflowing from the collection hopper 6 to the flocculation mixing tank 10. The flocculant dosing machine 8 adds flocculant solution to the flocculation mixing tank 10, and the second mixer 12 drives the flexible stirring rope to fully mix the flocculant solution and the material in the flocculation mixing tank 10, thus fully coagulating and settling the suspended solids in the coal material for subsequent dewatering, forming tertiary dewatered material.

[0031] In some examples, such as Figure 1 and Figure 2 As shown, the control unit includes: a first liquid level sensor 18, used to detect the material liquid level information in the buffer tank 9, wherein, when the material liquid level in the buffer tank 9 is detected to be greater than or equal to 30% of the capacity of the buffer tank 9, the control unit controls the mud pump to pump the material in the buffer tank 9 to the flocculation mixing tank 10, and controls the flocculant dosing machine 8 to dosing flocculant for flocculation operation.

[0032] Understandably, the control unit may be equipped with a first liquid level sensor 18. Specifically, the first liquid level sensor 18 is installed inside the buffer tank 9. It can detect the material level information within the buffer tank 9, and when the detected material level is greater than or equal to 30% of the buffer tank 9's capacity, the control unit controls the mud pump to pump the material from the buffer tank 9 to the flocculation mixing tank 10, and controls the flocculant dosing machine 8 to add flocculant solution into the flocculation mixing tank 10. This automates the entire process, reduces labor costs, and allows for more precise control of the timing and dosage of flocculant addition.

[0033] In some examples, such as Figure 1 and Figure 2 As shown, the control unit further includes: a second liquid level sensor 19, disposed in the water collection hopper 6, for detecting liquid level information in the water collection hopper 6; and an audible and visual alarm, which issues an audible and visual alarm when the liquid level information detected by the first liquid level sensor 18 and / or the second liquid level sensor 19 is abnormal.

[0034] Understandably, the control unit may also be equipped with a second liquid level sensor 19. Specifically, the second liquid level sensor 19 may be installed in the water collection hopper 6 to detect the liquid level information in the water collection hopper 6. The control unit is also equipped with an audible and visual alarm. When the material liquid level information in the buffer tank 9 detected by the first liquid level sensor 18 is abnormal, and / or the liquid level information in the water collection hopper 6 detected by the second liquid level sensor 19 is abnormal, the audible and visual alarm can be controlled to sound an alarm to prompt the staff to carry out maintenance.

[0035] In some examples, such as Figure 1 and Figure 2 As shown, the dewatering section further includes: a screw filter press 5 connected to the flocculation mixing tank 10 for dewatering the materials from the three-stage dewatering process to obtain coal cake and clean water; a horizontal screw conveyor 4, through which the screw filter press 5 conveys the coal cake to the screw elevator 1 via a second discharge pipe 15; and a third discharge pipe 14, through which the screw elevator 1 conveys the coal cake to the buffer bin.

[0036] Understandably, the dewatering section may also be equipped with a screw filter press 5, a horizontal screw conveyor 4, and a third discharge pipe 14. The screw filter press 5 can be connected to the flocculation mixing tank 10. After receiving the material from the third dewatering process, it further dewaters the material to obtain coal cake and purified water. The purified water can be stored and recycled, improving resource utilization and promoting environmental protection and energy conservation. The screw filter press 5 conveys the coal cake to the screw elevator 1 via the second discharge pipe 15. The screw elevator 1 then conveys the coal cake to the belt conveyor via the third discharge pipe 14, from where it is transported to a buffer silo for storage. This achieves complete separation of coal slurry and wastewater. The entire separation process is automatically controlled by the control unit, increasing automation and reducing labor costs.

[0037] In some examples, such as Figure 1 and Figure 2 As shown, the above-mentioned coal slurry water separation system also includes: a first mixer 11, which is installed in the buffer tank 9.

[0038] It is understandable that the buffer tank 9 can be equipped with a first mixer 11, which can be used to mix the secondary dewatered material and the material collected by the coal slime sewage overflowing from the water collection hopper 6, so as to avoid sedimentation and material deterioration that would affect subsequent dewatering operations.

[0039] In some examples, such as Figure 1 and Figure 2 As shown, the above-mentioned coal slurry water separation system also includes: an installation platform 7, the above-mentioned flocculation mixing tank 10, the above-mentioned screw filter press 5 and the above-mentioned horizontal screw conveyor 4 are installed on the above-mentioned installation platform 7.

[0040] Understandably, the coal slurry water separation system can also be equipped with an installation platform 7. The installation platform 7 can support the flocculation mixing tank 10, the screw filter press 5, the horizontal screw conveyor 4, and related equipment, making reasonable use of the longitudinal space.

[0041] It should be understood that the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Although the terms "first," "second," etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of this utility model.

[0042] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0043] It should be understood that in the description of this utility model, the terms "upper," "vertical," "inner," "outer," etc., indicate the orientation or positional relationship when the disclosed product is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” “containing,” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0046] Specific details are provided in the following description to provide a complete understanding of the exemplary embodiments. However, those skilled in the art will understand that the exemplary embodiments can be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may be omitted in the depiction of non-essential details to avoid obscuring the exemplary embodiments.

[0047] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

[0048] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art.

Claims

1. A coal slurry water separation system, characterized in that, include: The collection section is used to collect and transfer coal slurry wastewater generated during the washing operations of the coal conveyor bridge and transfer station; The dewatering section is used to separate the coal slime wastewater; The control unit is used to control the collection unit to collect and transfer the coal slurry wastewater, and to adjust the operating conditions of the dewatering unit according to the treatment status of the coal slurry wastewater.

2. The coal slime water separation system according to claim 1, characterized in that, The collection unit includes: A water collection hopper is used to collect the coal slurry wastewater; The spiral dewatering conveyor is used to perform a primary dewatering operation on the coal slime wastewater in the water collection hopper to obtain primary dewatered material, and to transport the primary dewatered material to the dewatering section; The first discharge pipe is used to discharge the dehydrated material to the dehydration section.

3. The coal slime water separation system according to claim 2, characterized in that, The collection unit also includes: Buffer pool; An overflow pipe is installed in the water collection hopper. When the liquid level of the coal slurry wastewater in the water collection hopper reaches a preset height, it is transported to the buffer tank through the overflow pipe.

4. The coal slime water separation system according to claim 3, characterized in that, The dehydration section includes: A dewatering screen, connected to the first discharge pipe, is used to perform a secondary dewatering operation on the primary dewatered material to obtain coal blocks on the dewatering screen and secondary dewatered material under the dewatering screen, wherein the secondary dewatered material flows to the buffer tank. A screw conveyor is connected to the dewatering screen, and the coal blocks on the dewatering screen are transported to the buffer bin via the screw conveyor.

5. The coal slime water separation system according to claim 4, characterized in that, The dehydration section also includes: A flocculation mixing tank is connected to the buffer tank; A mud pump, located in the flocculation mixing tank, is used to pump the material in the buffer tank to the flocculation mixing tank; A flocculant dosing machine is installed in the flocculation mixing tank to add chemicals to the flocculation mixing tank so that the material in the buffer tank forms flocs and forms tertiary dewatered material.

6. The coal slime water separation system according to claim 5, characterized in that, The control unit includes: The first liquid level sensor is used to detect the material liquid level information in the buffer tank. When the material liquid level in the buffer tank is detected to be greater than or equal to 30% of the buffer tank capacity, the control unit controls the mud pump to pump the material in the buffer tank to the flocculation mixing tank, and controls the flocculant dosing machine to add flocculant for flocculation operation.

7. The coal slime water separation system according to claim 6, characterized in that, The control unit also includes: A second liquid level sensor is installed in the water collection hopper to detect the liquid level information inside the water collection hopper; An audible and visual alarm is activated when the liquid level information detected by the first liquid level sensor and / or the second liquid level sensor is abnormal.

8. The coal slime water separation system according to claim 5, characterized in that, The dehydration section also includes: A screw filter press, connected to the flocculation mixing tank, is used to dewater the materials from the three-stage dewatering process to obtain coal cake and clean water. A horizontal screw conveyor, wherein the screw filter press conveys the coal cake to the screw elevator through a second discharge pipe; The third discharge pipe is through which the screw conveyor transports the coal cake to the buffer bin.

9. The coal slime water separation system according to claim 3, characterized in that, Also includes: The first mixer is located in the buffer pool.

10. The coal slime water separation system according to claim 8, characterized in that, Also includes: The flocculation mixing tank, the screw filter press, and the horizontal screw conveyor are installed on the installation platform.

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