Coal-water separation double-layer screening mechanism

Abstract

A coal-water separation double-layer screening mechanism relates to the field of underground desilting and comprises a coal slime screening unit, and the coal slime screening unit comprises a machine body shell and a screen; a vibration unit is arranged on the machine body shell; a hopper is also arranged below the screen mesh; and a slag slurry discharge unit is arranged behind the machine body shell and is connected with external slag slurry, and coal-containing wastewater in the hopper is circularly pumped out to the upper surface of the screen through a water pump. According to the sedimentation tank desilting device, various inconvenience of desilting of a sedimentation tank in the prior art is solved, desilting procedure participation in the normal operation process is achieved, solid-liquid separation in the sedimentation tank can be achieved, recycled solid substances can directly enter an operation unit to be recycled, the labor intensity of workers is greatly reduced, and the operation safety of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the field of underground dredging, in particular to a double-layer screening mechanism for coal-water separation. Background Art

[0002] Underground wastewater contains a large amount of coal slime particles. The common treatment method is to discharge the supernatant after discharging it into a sedimentation tank. As the sedimentation tank continuously sediments, the coal slime at the bottom accumulates thicker and thicker, and dredging treatment is required.

[0003] The existing dredging method requires closing the drainage outlet, discharging the supernatant and then manually cleaning it uniformly. This method is very labor-consuming and is not conducive to the work safety of the staff. In particular, during dredging, the normal water use of each production unit will be affected due to the closure of the drainage outlet. For the above problems, there is currently no corresponding solution. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a double-layer screening mechanism for coal-water separation that uses a slurry pump to dredge the bottom of the sedimentation tank and can directly recycle the coal slime during operation without affecting the normal water use of each production unit.

[0005] The equipment includes a frame, which is the assembly basis of the equipment. During use, the frame straddles the belt conveyor, and the screened coal slime can be directly recycled;

[0006] A coal slime screening unit is arranged on the frame. The coal slime screening unit includes a body shell, and a screen is arranged inside the body shell;

[0007] A vibration unit is arranged on the body shell;

[0008] A hopper is also arranged below the screen;

[0009] A slurry discharge unit is arranged behind the body shell. The slurry discharge unit includes a wastewater pump, and the wastewater pump is connected to the hopper through a pipeline; A discharge pipe is arranged at the output end of the wastewater pump, and a slurry spray head is arranged at the end of the discharge pipe, and the slurry spray head is arranged towards the screen;

[0010] A quick connector for coal slime discharge is arranged on the discharge pipe. The quick connector for coal slime discharge is used to connect the slurry discharged from the sedimentation tank.

[0011] The achieved effect is that the coal slime in the sedimentation tank is pumped out by a slurry pump and connected to the quick connector for coal slime discharge of the equipment through a pipeline; The vibration unit acts, and the screen screens the particulate matter and moisture in the coal slime. Among them, the screened coal slime enters the belt, and the moisture falls into the hopper through the screen;

[0012] The wastewater pump pumps out the water in the hopper and re-enters the discharge pipe for cyclic screening.

[0013] The beneficial effects of the present utility model are as follows: the present utility model solves the various inconveniences in the sedimentation tank dredging in the prior art, realizes the participation of the dredging process during normal operation, can separate the solid and liquid in the sedimentation tank, and the recovered solid substances can directly enter the operation unit and be recycled, greatly reducing the labor intensity of workers and improving the operation safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural view of a coal-water separation double-layer screening mechanism according to the present utility model;

[0015] Figure 2 is a front view of a coal-water separation double-layer screening mechanism according to the present utility model and also a schematic diagram of the positional relationship of each unit;

[0016] Figure 3 is a top view based on Figure 2 the perspective view as the front view perspective;

[0017] REFERENCE SIGNS:

[0018] 1 - slurry spray head, 2 - vibration unit, 3 - screen, 4 - frame, 5 - body shell, 6 - shock-absorbing base, 7 - hopper, 8 - wastewater pump

[0019] The realization, functional features and advantages of the object of the present utility model will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Referring to Figure 1 、 Figure 2 , a coal-water separation double-layer screening mechanism according to the present utility model includes a frame 4. The frame 4 is the assembly basis of this equipment. During use, the frame 4 is straddled on the belt conveyor, and the screened coal slime can be directly recycled;

[0021] A coal slime screening unit is arranged on the frame 4. The coal slime screening unit includes a body shell 5, and a screen 3 is arranged inside the body shell 5;

[0022] A vibration unit 2 is arranged on the body shell 5;

[0023] A hopper 7 is further arranged below the screen 3;

[0024] A slurry discharge unit is provided behind the body housing 5. The slurry discharge unit includes a waste water pump 8, and the waste water pump 8 is connected to a hopper 7 through a pipeline; a discharge pipe is provided at the output end of the waste water pump 8, and a slurry spray head 1 is provided at the end of the discharge pipe. The slurry spray head 1 is arranged facing the screen 3;

[0025] A quick connector for coal slime discharge is provided on the discharge pipe. The quick connector for coal slime discharge is used to connect the slurry discharged from the sedimentation tank.

[0026] Further, the frame 4 includes column feet and a bottom frame, and the column feet and the bottom frame are integrally connected.

[0027] The achieved effect is the stable placement of the equipment.

[0028] Further, the body housing 5 is arranged on the frame 4 through shock-absorbing bases 6. At least four shock-absorbing bases 6 are provided, and the four shock-absorbing bases 6 are respectively arranged at the four corners of the body housing 5.

[0029] Preferably, the shock-absorbing base 6 includes a base fixedly arranged on the frame 4. An assembly ear plate is arranged on the base, and a through shaft with a rubber pad is inserted through the assembly ear plate. The through shaft is fixedly connected to the collective housing through a slot.

[0030] The achieved effect is to avoid the collision between the coal slime screening unit and the frame 4 part and improve the service life of the equipment.

[0031] Further, the screen 3 is fixedly connected to the frame 4, and the frame 4 is arranged obliquely. That is, the screen 3 is arranged obliquely.

[0032] Preferably, the discharge end of the screen 3 is higher than the feed end. The feed end mentioned here refers to the end near the slurry spray head 1.

[0033] The achieved effect is to facilitate the separation and screening of coal and water and the screening out of solid granular materials.

[0034] Further, at least two layers of the screen 3 are provided, and they are arranged one above the other. The mesh number of the screen arranged below is greater than that of the upper screen.

[0035] The achieved effect is to screen the granular materials step by step, making the screening more thorough and improving the screening efficiency at the same time.

[0036] Further, an assembly base for the vibration unit 2 is provided on the frame 4, and the vibration unit 2 is provided on the assembly base for the vibration unit 2;

[0037] The vibration unit 2 is composed of at least two vibration motors or vibration motors.

[0038] The effect achieved thereby is to optimize the configuration form, which is easy to overhaul and maintain.

[0039] Furthermore, the wastewater pump 8 is a centrifugal pump, and the centrifugal pump is connected to a power unit; both the centrifugal pump and the power unit are fixedly arranged on the power unit assembly rack 4 behind the body shell 5.

[0040] The effect achieved thereby is to pump out the coal-water mixture in the hopper 7 by means of the centrifugal pump and participate in the screening cycle.

[0041] Furthermore, a plurality of slurry nozzles 1 are arranged on the discharge pipe.

[0042] The effect achieved thereby is to avoid the pipe blockage of a single nozzle, which may cause the equipment to stop running, and improve the operation safety while also improving the screening efficiency of the slurry.

[0043] During use, the coal slime in the sedimentation tank is pumped out by a slurry pump and connected to the quick connector for coal slime discharge of this equipment through a pipeline; the vibration unit 2 operates, and the screen 3 screens the particulate matter and moisture in the coal slime. Among them, the coal slime after screening enters the belt, and the moisture falls into the hopper 7 through the screen 3.

[0044] The wastewater pump 8 pumps out the water in the hopper 7 and enters the discharge pipe again. There are two implementation effects. One is to avoid the blockage of the pipe due to the overly viscous slurry. In this case, it can also assist in improving the discharge speed of the coal slime in the sedimentation tank; the other is to be able to circulate and pump out the wastewater containing coal powder particles in the hopper 7 into the coal slime screening unit for cyclic screening to ensure the complete recovery of materials.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims.

[0046] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double-layer screening mechanism for coal-water separation, comprising a frame, characterized in that: The frame is provided with a coal slime screening unit, and the coal slime screening unit comprises a body shell, and a screen is arranged inside the body shell; The housing is provided with a vibration unit; A hopper is also provided below the screen; A slurry discharge unit is arranged behind the machine body shell, and the slurry discharge unit comprises a wastewater pump, and the wastewater pump pipeline is connected to the hopper; a discharge pipe is arranged at the output end of the wastewater pump, and a slurry nozzle is arranged at the end of the discharge pipe, and the slurry nozzle is arranged toward the screen; The discharge pipe is provided with a coal slime discharge quick connector.

2. A double-layer screening mechanism for coal-water separation according to claim 1, characterized in that: The frame comprises a column foot and a bottom frame, and the column foot and the bottom frame are integrally connected.

3. A double-layer screening mechanism for coal-water separation according to claim 1, characterized in that: The machine body shell is arranged on the frame through a shock absorbing base, and at least four shock absorbing bases are arranged, and the four shock absorbing bases are respectively arranged at four corners of the machine body shell.

4. A double-layer screening mechanism for coal-water separation according to claim 1, characterized in that: The screen is fixedly connected to the frame, and the frame is tilted.

5. A double-layer screening mechanism for coal-water separation according to claim 1, characterized in that: The screen is provided with at least two layers, which are arranged in an upper and lower manner, and the mesh number of the screen arranged at the lower layer is greater than that of the upper screen.

6. A double-layer screening mechanism for coal-water separation according to claim 1, characterized in that: The frame is provided with a vibration unit assembly base, and the vibration unit is provided on the vibration unit assembly base; The vibration unit is composed of at least two vibration motors.

7. A double-layer screening mechanism for coal-water separation according to claim 1, characterized in that: The wastewater pump is a centrifugal pump, which is connected to a power unit; the centrifugal pump and the power unit are both fixedly arranged on a power unit assembly frame behind the machine body shell.

8. A double-layer screening mechanism for coal-water separation according to claim 1, characterized in that: The discharge pipe is provided with a plurality of slurry nozzles.

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