Coal washing wastewater solid-liquid separation device

Abstract

The utility model relates to a coal washing wastewater solid-liquid separation device which comprises a tank body, a first motor is installed on the upper end face of the tank body, the output end of the first motor penetrates through the upper end face of the tank body and is provided with a stirring rod, the right side wall of the tank body communicates with an overflow pipe, and the other end of the overflow pipe communicates with a separation tank. A filter cylinder is installed in the separation tank, a second motor is installed on the upper end face of the separation tank, the output end of the second motor penetrates through the upper end face of the separation tank and is provided with a rotating shaft located in the filter cylinder, and a plurality of scraping plates which are evenly distributed and slidably connected with the inner side wall of the filter cylinder are installed on the outer side wall of the rotating shaft; the coal washing wastewater solid-liquid separation device has the characteristics that the coal washing wastewater is conveniently subjected to solid-liquid separation, the solid-liquid separation efficiency is effectively improved, and solids in the wastewater are conveniently collected.

Description

Technical Field

[0001] The utility model relates to the technical field of coal washing wastewater treatment, in particular to a solid-liquid separation device for coal washing wastewater. Background Technique

[0002] Coal washing wastewater is the industrial tail water of the wet coal washing processing technology in coal mines, which contains a large amount of coal slime and mud and sand, causing serious pollution to the environment near the mining area. Its main characteristics are high turbidity, fine particle size of solids, and most of the solid particles on the surface carry negative charges. The repulsion between like charges keeps these particles dispersed in water, affected by gravity and Brownian motion; due to the interaction between the interfaces of solid particles in coal slime water (such as adsorption, dissolution, combination, etc.), the properties of coal washing wastewater are quite complex, not only having the properties of a suspension but also having the properties of a colloid. If it is directly discharged without treatment, it will inevitably cause environmental pollution, lead to river channel siltation, and serious waste of water resources.

[0003] At present, when treating coal washing wastewater, it is necessary to separate the solids (coal slime) and liquids inside it. However, most of the existing treatment methods for sand and gravel wastewater are natural sedimentation, and the supernatant after precipitation is a black liquid with a small amount of suspended substances such as coal slime. Therefore, adopting such a treatment method not only has low efficiency, but also the separation effect of solids and liquids in coal washing wastewater is not good, thus reducing the treatment effect of coal washing wastewater, so it needs to be improved. Content of the Utility Model

[0004] The purpose of the utility model is to provide a solid-liquid separation device for coal washing wastewater, which has the characteristics of being convenient for solid-liquid separation of coal washing wastewater, effectively improving the efficiency of solid-liquid separation, and being convenient for collecting solids in the wastewater.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A solid-liquid separation device for coal washing wastewater, including a tank body, a first motor is installed on the upper end surface of the tank body, the output end of the first motor penetrates the upper end surface of the tank body and is installed with a stirring rod, the right side wall of the tank body is communicated with an overflow pipe, the other end of the overflow pipe is communicated with a separation tank, a filter cylinder is installed inside the separation tank, a second motor is installed on the upper end surface of the separation tank, the output end of the second motor penetrates the upper end surface of the separation tank and is installed with a rotating shaft located inside the filter cylinder, and a plurality of uniformly distributed scraping plates slidingly connected with the inner side wall of the filter cylinder are installed on the outer side wall of the rotating shaft;

[0006] A conveying cylinder is arranged below the tank body and the separation tank, a third motor is installed on the left side wall of the conveying cylinder, the output end of the third motor penetrates the outer side wall of the conveying cylinder and is installed with a spiral rod, support rods are installed on the outer side walls of the tank body and the separation tank, and a bottom plate is installed between the bottoms of the two support rods.

[0007] To facilitate the conveyance of the separated solid substances into the conveyance tube for transportation, as an optimization of the coal washing wastewater solid-liquid separation device of the present utility model, a drain pipe is connected to the bottom of the tank body, a sewer pipe that penetrates the bottom of the separation tank and extends below the separation tank is connected to the bottom of the filter cylinder, first valves are installed on the outer side walls of the drain pipe and the sewer pipe, and the other ends of both are connected to the outer side wall of the conveyance cylinder.

[0008] To facilitate the discharge of the separated liquid, as an optimization of the coal washing wastewater solid-liquid separation device of the present utility model, a water outlet pipe is connected to the bottom of the outer side wall of the separation tank.

[0009] To facilitate the inflow of the wastewater in the tank body into the interior of the separation tank, as an optimization of the coal washing wastewater solid-liquid separation device of the present utility model, a second valve is installed on the outer side wall of the overflow pipe.

[0010] To facilitate the introduction of the coal washing wastewater into the tank body, as an optimization of the coal washing wastewater solid-liquid separation device of the present utility model, a water inlet pipe is connected to the upper end of the left side wall of the tank body, and a chemical addition port is provided through the upper end surface.

[0011] To facilitate the discharge of the separated solid substances, as an optimization of the coal washing wastewater solid-liquid separation device of the present utility model, a slag discharge pipe is connected to the right end of the bottom of the conveyance cylinder.

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

[0013] When the present utility model is in use, the coal washing wastewater is introduced into the interior of the tank body through the water inlet pipe. Immediately afterwards, the staff adds chemicals into the tank body through the chemical addition port. By starting the first motor, the stirring rod rotates to mix the wastewater with the chemicals, causing the solids in the coal washing wastewater to precipitate in the flocculation tank for preliminary solid-liquid separation. Then, the supernatant of the coal washing wastewater flows into the separation tank through the overflow pipe. Since there is some coal slime in the supernatant after the coal washing wastewater precipitates, at this time, the filter cylinder further separates the solid and liquid of the coal washing wastewater. The separated liquid is discharged from the water outlet pipe, and the separated solid substances (coal slime) fall into the sewer pipe, thus facilitating the solid-liquid separation of the coal washing wastewater, effectively improving the efficiency of solid-liquid separation. When cleaning the separated solid substances, first start the second motor to make multiple scraping plates remove the solid substances attached to the filter cylinder, and open the first valve on the sewer pipe to make the sewer pipe discharge the separated solid substances into the conveyance cylinder. And by opening the first valve on the drain pipe, the drain pipe discharges the sediment deposited at the bottom of the tank body into the conveyance cylinder. By starting the third motor, the spiral rod rotates to convey the solid substances and discharges them through the slag discharge pipe for collection, thus facilitating the collection of the solids in the wastewater. Description of the Drawings

[0014] Figure 1This is the overall structure diagram of the utility model;

[0015] Figure 2 This is the overall sectional structure diagram of the utility model;

[0016] Figure 3 This is the top view structure diagram of the filter cartridge of the utility model.

[0017] In the figure: 1. Tank body; 101. Water inlet pipe; 102. Drain pipe; 103. First valve; 2. First motor; 201. Stirring rod; 3. Overflow pipe; 301. Second valve; 4. Separation tank; 401. Filter cartridge; 402. Water outlet pipe; 403. Down pipe; 5. Second motor; 501. Rotating shaft; 502. Scraper; 6. Delivery cylinder; 601. Third motor; 602. Screw rod; 603. Slag discharge pipe; 7. Support rod; 701. Bottom plate. Specific implementation manner

[0018] Please refer to Figures 1 to 3 , a solid-liquid separation device for coal washing wastewater, comprising a tank body 1, a first motor 2 is installed on the upper end surface of the tank body 1, the output end of the first motor 2 penetrates the upper end surface of the tank body 1 and is installed with a stirring rod 201, the right side wall of the tank body 1 is communicated with an overflow pipe 3, the other end of the overflow pipe 3 is communicated with a separation tank 4, a filter cartridge 401 is installed inside the separation tank 4, a second motor 5 is installed on the upper end surface of the separation tank 4, the output end of the second motor 5 penetrates the upper end surface of the separation tank 4 and is installed with a rotating shaft 501 located inside the filter cartridge 401, and a plurality of uniformly distributed scrapers 502 which are slidably connected with the inner side wall of the filter cartridge 401 are installed on the outer side wall of the rotating shaft 501;

[0019] A delivery cylinder 6 is arranged below the tank body 1 and the separation tank 4, a third motor 601 is installed on the left side wall of the delivery cylinder 6, the output end of the third motor 601 penetrates the outer side wall of the delivery cylinder 6 and is installed with a screw rod 602, support rods 7 are installed on the outer side walls of the tank body 1 and the separation tank 4, and a bottom plate 701 is installed between the bottoms of the two support rods 7.

[0020] In this embodiment: When in use, the coal washing wastewater is introduced into the interior of the tank body 1 through the water inlet pipe 101. Immediately afterwards, the staff adds the medicament into the interior of the tank body 1 through the medicament adding port. By starting the first motor 2, the stirring rod 201 rotates to mix the wastewater and the medicament, so that the solid in the coal washing wastewater flocculates and precipitates in the sedimentation tank, and preliminary solid-liquid separation is carried out. Then, the supernatant of the coal washing wastewater flows into the separation tank 4 through the overflow pipe 3. Since there is still some coal slime in the supernatant after the coal washing wastewater precipitates, at this time, the filter cartridge 401 further separates the solid and liquid in the coal washing wastewater, and the separated liquid is discharged from the water outlet pipe 402, and the separated solid matter (coal slime) falls into the sewer pipe 403, so as to facilitate the solid-liquid separation of the coal washing wastewater, effectively improve the efficiency of solid-liquid separation. When cleaning the separated solid matter, first start the second motor 5, so that the plurality of scraping plates 502 remove the solid matter attached to the filter cartridge 401, and open the first valve 103 on the sewer pipe 403, so that the sewer pipe 403 discharges the separated solid matter into the conveying cylinder 6, and by opening the first valve 103 on the liquid discharge pipe 102, the liquid discharge pipe 102 discharges the sediment deposited at the bottom of the tank body 1 into the conveying cylinder 6. By starting the third motor 601, the screw rod 602 rotates to convey the solid matter and discharges it through the slag discharge pipe 603 for collection, so as to facilitate the collection of the solid in the wastewater.

[0021] As a technical optimization scheme of the present utility model, a liquid discharge pipe 102 is communicated with the bottom of the tank body 1, a sewer pipe 403 is communicated with the bottom of the filter cartridge 401 and penetrates through the bottom of the separation tank 4 and extends below the separation tank 4. The outer side walls of the liquid discharge pipe 102 and the sewer pipe 403 are both provided with a first valve 103 and the other ends are both communicated with the outer side wall of the conveying cylinder 6.

[0022] In this embodiment: By providing the liquid discharge pipe 102 and the sewer pipe 403, by respectively opening the first valves 103 on the liquid discharge pipe 102 and the sewer pipe 403, the sediment at the bottom of the tank body 1 and the solid separated from the separation tank 4 fall into the conveying cylinder 6 for conveying.

[0023] As a technical optimization scheme of the present utility model, a water outlet pipe 402 is communicated with the bottom of the outer side wall of the separation tank 4.

[0024] In this embodiment: By providing the water outlet pipe 402, it is convenient to discharge the separated liquid.

[0025] As a technical optimization scheme of the present utility model, a second valve 301 is installed on the outer side wall of the overflow pipe 3.

[0026] In this embodiment: By providing the second valve 301, opening the overflow pipe 3 facilitates the liquid in the tank body 1 to flow into the interior of the separation tank 4.

[0027] As a technical optimization solution of the present invention, the upper end of the left side wall of the tank body 1 is connected to a water inlet pipe 101, and a drug adding port is opened through the upper end surface.

[0028] In this embodiment, the water inlet pipe 101 is provided to facilitate the flow of external coal washing wastewater into the interior of the tank body 1 .

[0029] As a technical optimization solution of the present invention, the right end of the bottom of the conveying cylinder 6 is connected to a slag discharge pipe 603.

[0030] In this embodiment, a slag discharge pipe 603 is provided to facilitate the discharge of the separated solid matter.

[0031] Working principle: First, when using the device, the device is first connected to an external power source, and then the coal washing wastewater is passed into the interior of the tank body 1 through the water inlet pipe 101. Then, the staff adds the reagent through the dosing box inside the tank body 1, and starts the first motor 2 to rotate the stirring rod 201 to mix the wastewater and the reagent, so that the solid flocculation pool in the coal washing wastewater is precipitated and preliminary solid-liquid separation is performed. Then, by opening the second valve 301, the supernatant of the coal washing wastewater flows into the separation tank 4 through the overflow pipe 3. Since some coal slime exists in the supernatant after the coal washing wastewater is precipitated, the filter cartridge 401 further separates the solid and liquid of the coal washing wastewater. The separated liquid is discharged from the outlet pipe 402, and the separated solid matter (coal slime) falls into the sewer pipe 403.

[0032] When the separated solid matter is to be cleaned, the second motor 5 is first started to rotate the rotating shaft 501 to drive the multiple scrapers 502 to rotate the groove, so that the multiple scrapers 502 remove the solid matter attached to the filter cartridge 401, and the first valve 103 on the sewer pipe 403 is opened, so that the sewer pipe 403 discharges the separated solid matter into the conveying cylinder 6, and the third motor 601 is started to rotate the screw rod 602 to convey the solid matter and discharge it through the slag discharge pipe 603 for collection. When it is necessary to clean the solid matter deposited at the bottom of the tank body 1, the first valve 103 on the drain pipe 102 is opened, so that the drain pipe 102 discharges the sediment deposited at the bottom of the tank body 1 into the conveying cylinder 6 for transportation and collection, thereby realizing the separation and collection of solids in the wastewater.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A solid-liquid separation device for coal washing wastewater, comprising a tank body (1), characterized in that: A first motor (2) is installed on the upper end face of the tank body (1). The output end of the first motor (2) penetrates the upper end face of the tank body (1) and is provided with a stirring rod (201). An overflow pipe (3) is communicated with the right side wall of the tank body (1). The other end of the overflow pipe (3) is communicated with a separation tank (4). A filter cartridge (401) is installed inside the separation tank (4). A second motor (5) is installed on the upper end face of the separation tank (4). The output end of the second motor (5) penetrates the upper end face of the separation tank (4) and is provided with a rotating shaft (501) located inside the filter cartridge (401). A plurality of uniformly distributed scraping plates (502) which are slidably connected with the inner side wall of the filter cartridge (401) are installed on the outer side wall of the rotating shaft (501); A conveying cylinder (6) is arranged below the tank body (1) and the separation tank (4). A third motor (601) is installed on the left side wall of the conveying cylinder (6). The output end of the third motor (601) penetrates the outer side wall of the conveying cylinder (6) and is provided with a screw rod (602). Support rods (7) are installed on the outer side walls of the tank body (1) and the separation tank (4). A bottom plate (701) is installed between the bottoms of the two support rods (7).

2. The solid-liquid separation device for coal washing wastewater according to claim 1, wherein: A drain pipe (102) is communicated with the bottom of the tank body (1). A water discharge pipe (403) which penetrates the bottom of the separation tank (4) and extends below the separation tank (4) is communicated with the bottom of the filter cartridge (401). First valves (103) are installed on the outer side walls of the drain pipe (102) and the water discharge pipe (403), and the other ends of both are communicated with the outer side wall of the conveying cylinder (6).

3. A coal washing wastewater solid-liquid separation device according to claim 1, characterized in that: A water outlet pipe (402) is communicated with the bottom of the outer side wall of the separation tank (4).

4. A coal washing wastewater solid-liquid separation device according to claim 1, characterized in that: A second valve (301) is installed on the outer side wall of the overflow pipe (3).

5. A coal washing wastewater solid-liquid separation device according to claim 1, characterized in that: A water inlet pipe (101) is communicated with the upper end of the left side wall of the tank body (1), and a chemical addition port is formed through the upper end face.

6. The solid-liquid separation device for coal washing wastewater according to claim 1, characterized in that: A slag discharge pipe (603) is communicated with the right end of the bottom of the conveying cylinder (6).

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