A negative pressure vibration separation device for underground coal mines

Abstract

The utility model discloses a negative pressure vibration separation device for underground coal mines, which relates to the technical field of underground coal mine sewage treatment, and comprises an equipment support part, a rotating filter belt part, a separation vibration part and a negative pressure part. The negative pressure vibration separation device provided by the utility model enables underground coal mine sewage to be separated and treated as solids before entering the warehouse, so that there is almost no sediment in the water warehouse, thus solving the hidden danger of full warehouse. The negative pressure chamber added to the equipment can quickly separate solids and liquids through the pressure difference between the inside and the outside, thereby improving the operation efficiency. The air knife can quickly clean the bonded particles on the filter screen, thereby keeping the filter screen in a high permeability state for a long time, making the operation efficiency higher and the separation effect better.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment in coal mines, in particular to negative pressure vibration separation equipment used in coal mines. Background Art

[0002] The sewage in coal mines mainly comes from wastewater generated during coal mining, mine water, equipment cleaning water, and domestic sewage of staff. These sewage contain a large amount of suspended matter, coal slime and other solid substances. These sewage will be directly discharged into the water tank. As the sewage is left standing for a long time, the solid particles in the water will precipitate, which will cause the water tank to be full over time. The coal mines have to manually clean the sediment every once in a while. This process is not only dangerous but also time-consuming and labor-intensive, and poses a major hidden danger to underground safety. Therefore, it becomes necessary to solve the sedimentation problem of underground water tanks from the source.

[0003] Most of the underground sewage solid-liquid separation equipment used in the prior art uses the principle of vibration plus filter screen to achieve separation, but the existing equipment has the disadvantages of slow operation efficiency and poor permeability caused by easy adhesion of the filter screen. Utility Model Content

[0004] The purpose of the utility model is to provide a negative pressure vibration separation device for use in coal mines, so as to solve the shortcomings of the underground sewage solid-liquid separation equipment used in the prior art proposed in the above background technology, such as slow operating efficiency and easy adhesion of the filter screen resulting in poor permeability.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a negative pressure vibration separation device for underground coal mines, comprising an equipment support part and a rotating filter belt part arranged on the top thereof, and a separation vibration part and a negative pressure part are arranged above and below the rotating filter belt part; the equipment support part comprises an equipment support welded by a steel structure and an adjustment foot is arranged at each foot; the rotating filter belt part comprises transmission wheels longitudinally arranged at the left and right ends of the top of the equipment support, a rotating support belt is arranged on the two transmission wheels, and a filter screen is arranged on the outside of the rotating support belt; the separation vibration part comprises a plurality of spring mounting grooves arranged on the equipment support and a vibration spring is installed on the inner side thereof, a vibration rod is supported and arranged at the top of the plurality of vibration springs, and the upper rotating support belt is directly placed on the top surface of the vibration rod, and a high-frequency pneumatic piston vibrator is arranged at the middle position of two adjacent vibration springs on the bottom surface of the vibration rod; the negative pressure part comprises a suction cup bucket concave into a bowl shape arranged below the upper rotating support belt, the rotating support belt and the suction cup bucket jointly constitute a negative pressure chamber, and a water outlet is arranged inside the suction cup bucket.

[0006] Preferably, a shaft of one of the transmission wheels is connected to a filter belt motor via gear transmission.

[0007] Preferably, the top surface of the rotating support belt and the filter screen is provided with a mud inlet near the right end and a mud distribution plate, the left end is a slag outlet and a mud slag discharge trough is provided below, and the middle is a filtering area.

[0008] Preferably, a tensioning wheel bracket is arranged vertically downward on the bottom surface of the vibration rod near its left end, and a tensioning roller is arranged at the bottom end of the tensioning wheel bracket, and the tensioning roller abuts against the top surface of the lower rotating support belt.

[0009] Preferably, the water outlet is connected to an air separator through a pipeline and then connected to a nozzle of a large vacuum cleaner; the air separator is provided with a secondary filter and an air lock.

[0010] Preferably, the filter screen is loosely suspended on the top surface of the rotating support belt.

[0011] Preferably, an air knife for spraying downwards is provided above the lower rotating support belt near the right end.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The negative pressure vibration separation equipment provided by the utility model enables underground sewage in coal mines to be separated from solids before entering the warehouse, so that there is almost no sediment in the water warehouse, thus solving the hidden danger of full warehouse; the negative pressure chamber added to the equipment can quickly separate solids and liquids through the pressure difference between the inside and the outside, thereby improving the operating efficiency; the air knife can quickly clean the sticky particles on the filter screen, thereby keeping the filter screen in a high-permeability state for a long time, making the operating efficiency higher and the separation effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model;

[0015] Figure 2 for Figure 1 Structural diagram;

[0016] Figure 3 for Figure 2 A magnified view of middle;

[0017] In the figure: equipment support part-1, equipment support-11, adjustment foot-12, rotating filter belt part-2, transmission wheel-21, rotating support belt-22, filter screen-23, separation vibration part-3, spring mounting groove-31, vibration spring-32, vibration rod-33, high-frequency pneumatic piston vibrator-34, tensioning wheel bracket-35, tensioning roller-36, negative pressure part-4, suction cup bucket-41, water outlet-42, air knife-5. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution in the embodiments of the present utility model is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Please refer to Figure 1-3 , Figure 1 It is a schematic diagram of the utility model; Figure 2 for Figure 1 Structural diagram; Figure 3 for Figure 2 A is an enlarged view of the middle image.

[0020] The utility model provides a negative pressure vibration separation device for underground coal mines, which is used for separating and removing solid particles in underground water bins of coal mines, thereby avoiding the problem of full water bins; it comprises an equipment bracket part 1 for supporting the negative pressure vibration separation device, a rotating filter belt part 2 for filtering and separating solid particles in sewage is arranged on the top of the equipment bracket part 1, and a separation vibration part 3 for providing vibration for filtering operation is arranged below the rotating filter belt part 2; a negative pressure part 4 is arranged below the separation vibration part 3 through a bracket, which is used for assisting in the rapid separation of solid particles in mud.

[0021] The equipment support part 1 includes an equipment support 11 which is welded by a steel structure, and an adjustment foot 12 is arranged at each foot of the equipment support 11 to ensure the stability of the negative pressure vibration separation device.

[0022] The rotating filter belt portion 2 includes transmission wheels 21 longitudinally arranged at the left and right ends of the top of the equipment bracket 11, and the shaft of one of the transmission wheels 21 is connected to the filter belt motor through gear transmission; a rotating support belt 22 is commonly arranged on the two transmission wheels 21, and a filter screen 23 is arranged on the outer side of the rotating support belt 22; the top surface of the rotating support belt 22 and the filter screen 23 is close to the right end for the mud inlet, and a mud distribution plate is arranged at the mud inlet, which can effectively slow down the flow speed of the mud and ensure that the flow rate is evenly distributed over the width of the rotating filter belt portion 2; the left end of the top surface of the rotating support belt 22 and the filter screen 23 is a slag outlet and a mud slag discharge trough is arranged therebelow, and the filtration area is between the mud inlet and the slag outlet.

[0023] The separation vibration part 3 includes a plurality of spring mounting grooves 31 arranged on the equipment bracket 11, and a vibration spring 32 is installed in each spring mounting groove 31, and the top ends of the plurality of vibration springs 32 jointly support a vibration rod 33, and the upper rotating support belt 22 is directly placed on the top surface of the vibration rod 33, and a high-frequency pneumatic piston vibrator 34 is arranged on the bottom surface of the vibration rod 33 at the middle position of two adjacent vibration springs 32, which serves as a vibration source of the separation vibration part 3, and transmits micro-vibration power to the mud and sewage in the filtering area of ​​the rotating filter belt part 2, thereby reducing the possibility of close-sized particles clogging the holes of the filter screen 23, and also helps to break the surface tension of the droplets, so as to better penetrate the filter screen.

[0024] In addition, a tensioning wheel bracket 35 is arranged vertically downward on the bottom surface of the vibration rod 33 near its left end, and a tensioning roller 36 is arranged at the bottom end of the tensioning wheel bracket 35, and the tensioning roller 36 is abutted against the top surface of the lower rotating support belt 22, thereby tightening the rotating support belt 22.

[0025] The negative pressure part 4 includes a suction cup 41 which is concave into a bowl shape and is arranged below the upper rotating support belt 22. The rotating support belt 22 and the suction cup 41 together constitute a negative pressure chamber, and a water outlet 42 is arranged inside the suction cup 41. The water outlet 42 is connected to an air separator through a pipeline and then connected to the nozzle of a large vacuum cleaner. The air separator is a prior art product and is provided with a secondary filter and an air lock. The use of the air lock prevents air from flowing back from the mud part to the vacuum cleaner, and also prevents air from flowing back and impacting the rotating filter belt part 2.

[0026] In addition, the filter screen 23 is loosely suspended on the top surface of the rotating support belt 22. When filtering, the air flowing through the filtering area of ​​the rotating support belt 22 will cause the filter screen 23 to stick to the top surface of the rotating support belt 22, without the need to fix the filter screen 23 and the rotating support belt 22 together; and the rotation speed of the rotating support belt 22 is adjustable, which ensures that underground sewage of different properties and different solid contents has a good cleaning effect; at high speed, solid particles will move quickly in the filtering area, allowing the solid particles to be discharged at high speed to increase the flow rate, however, the residual fluid of the solid particles leaving the separation equipment at high speed may be higher; for operations with high viscosity fluids, slow speed will improve the cleaning process.

[0027] A downward-spraying air knife 5 is also provided above the lower rotating support belt 22 near the right end. When the rotating support belt 22 and the filter screen 23 are extremely blocked or have sticky clay, blockage can be prevented. The air knife 5 can blow down the adhered mud above the rotating support belt 22. When the rotating support belt 22 and the filter screen 23 rotate, the mud residue remains on the top and is transported to the residue outlet and discharged into the mud residue tank by gravity.

[0028] When in use, the mud is pumped into the mud inlet by the mud pump, and the mud distribution plate is used to slow down the flow rate of the mud at the mud inlet, and ensure that the flow is evenly distributed over the width of the rotating filter belt 2. When the mud enters the filtering area of ​​the rotating filter belt 2, the airflow through the rotating filter belt 2 will filter the liquid through the filter screen 23 and enter the suction cup 41 below, while the solid particles remain on the top surface of the filter screen 23 and are transported to the slag outlet at the end of the rotating filter belt 2 and discharged to the mud slag discharge below. The filtered mud liquid flowing into the suction cup bucket 41 is guided to the air separator through the outlet 42, and the airflow passes through the suction cup bucket 41, passes through the air separator, and then passes through the filter kit to enter the vacuum device. In normal operation, the liquid in the filter screen 23 will flow through the filter screen 23 without any hindrance. However, if the filter screen 23 is damaged, solid particles will enter the suction cup bucket 41, causing the filter screen 23 to gradually become blocked. Therefore, the mud will accumulate on the top of the secondary filter screen and begin to flow into the mud outlet through the overflow port. The control system will detect the mud in the overflow port, and the alarm will notify the operator that the filter screen must be checked for damage and repaired or replaced. The operation efficiency is high and the service life of the filter belt is increased.

[0029] The negative pressure vibration separation equipment provided by the utility model enables underground sewage in coal mines to be separated from solids before entering the warehouse, so that there is almost no sediment in the water warehouse, thus solving the hidden danger of full warehouse; the negative pressure chamber added to the equipment can quickly separate solids and liquids through the pressure difference between the inside and the outside, thereby improving the operating efficiency; the air knife can quickly clean the sticky particles on the filter screen, thereby keeping the filter screen in a high-permeability state for a long time, making the operating efficiency higher and the separation effect better.

[0030] Although the embodiments of the utility model have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, it can be understood by ordinary technicians in this field that all other embodiments obtained by making various changes, modifications, substitutions and variations to these embodiments without departing from the principle and spirit of the utility model and without making creative work, all belong to the scope of protection of the utility model.

Claims

1. A negative pressure vibration separation device for underground coal mines, characterized in that: The invention comprises an equipment support part (1) and a rotating filter belt part (2) is arranged on the top thereof, and a separation vibration part (3) and a negative pressure part (4) are arranged above and below the rotating filter belt part (2); the equipment support part (1) comprises an equipment support (11) welded with a steel structure and an adjustment foot (12) is arranged at each foot; the rotating filter belt part (2) comprises transmission wheels (21) longitudinally arranged at the left and right ends of the top of the equipment support (11), a rotating support belt (22) is arranged on both transmission wheels (21), and a filter screen (23) is arranged on the outer side of the rotating support belt (22); the separation vibration part (3) comprises a plurality of transmission wheels (21) arranged on the equipment support (11) A spring installation groove (31) is provided with a vibration spring (32) installed inside each of the spring installation grooves, a vibration rod (33) is supported and arranged at the top ends of the plurality of vibration springs (32), and an upper rotating support belt (22) is directly placed on the top surface of the vibration rod (33), and a high-frequency pneumatic piston vibrator (34) is arranged on the bottom surface of the vibration rod (33) at a middle position between two adjacent vibration springs (32); the negative pressure portion (4) includes a suction cup (41) which is concave into a bowl shape and is arranged below the upper rotating support belt (22), the rotating support belt (22) and the suction cup (41) together constitute a negative pressure chamber, and a water outlet (42) is arranged inside the suction cup (41).

2. The negative pressure vibration separation equipment for underground coal mines according to claim 1, characterized in that: The shaft of one of the transmission wheels (21) is connected to a filter belt motor via gear transmission.

3. The negative pressure vibration separation equipment for underground coal mines according to claim 2, characterized in that: The top surface of the rotating support belt (22) and the filter screen (23) has a mud inlet near the right end and a mud distribution plate, a slag outlet at the left end and a mud slag discharge trough at the bottom, and a filtering area in the middle.

4. The negative pressure vibration separation equipment for underground coal mines according to claim 3, characterized in that: A tension wheel bracket (35) is arranged vertically downward on the bottom surface of the vibration rod (33) near its left end, and a tension roller (36) is arranged at the bottom end of the tension wheel bracket (35), and the tension roller (36) is against the top surface of the lower rotating support belt (22).

5. The negative pressure vibration separation equipment for underground coal mines according to claim 4, characterized in that: The water outlet (42) is connected to an air separator through a pipeline and then connected to a nozzle of a large vacuum cleaner; the air separator is provided with a secondary filter and an air lock.

6. The negative pressure vibration separation equipment for underground coal mines according to claim 5, characterized in that: The filter screen (23) is loosely suspended on the top surface of the rotating support belt (22).

7. The negative pressure vibration separation equipment for underground coal mines according to any one of claims 1 to 6, characterized in that: An air knife (5) for spraying downwards is also arranged above the lower rotating support belt (22) near the right end.

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