Coal slime segregation and dehydration screen

Abstract

The utility model discloses a coal slime segregation dewatering screen, which relates to the technical field of dewatering equipment and comprises a base, a support mechanism mounted at the top of the base, a screen box mounted at the top of the support mechanism, a fine screening mechanism arranged at the bottom of the screen box, the fine screening mechanism comprises a hopper, the hopper is fixed at the bottom of the screen box, and a semi-cylindrical screen is fixedly connected to the bottom of the hopper. A rotating shaft is arranged in the screen, and a spiral piece is fixed to the rotating shaft. The fine coal dewatering device has the beneficial effects that in the dewatering process, fine coal falls onto the screen, fine coal particles are pushed to move through rotation of the spiral piece, the spiral piece has a scraping effect on the screen, the situation that the screen is blocked by the fine coal particles can be avoided, on the other hand, the fine coal particles can be screened more thoroughly, water flow is not needed for washing again, water resources are saved, and the dewatering efficiency is improved. Waste of fine coal particles is also avoided; in addition, the sweeping and scraping mechanism is arranged at the bottom of the screen, fine coal particles can be further prevented from blocking the screen, and the using effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of dehydration equipment, in particular to a coal slime separation and dehydration screen. Background Art

[0002] The dewatering screen is an important equipment in a coal preparation plant. Its main function is to dewater, desludging and de-mediate the coal slime, thereby improving the quality of the clean coal. For example, the patent document with the announcement number CN217988555U discloses a coal slime separation and dewatering screen. The coal slime separation and dewatering screen is equipped with a water nozzle and a guide plate to assist the operation of the drainage box, thereby increasing the water flow to flush the fine coal particles remaining on the guide plate after screening, and avoid clogging caused by adhesion. At the same time, a filter bag is installed at the outlet of the drainage box for secondary interception and filtration, thereby reducing the waste of fine coal particles. However, since the fine coal particles themselves are attached to the guide plate with the water flow, the water flow that flushes the guide plate needs to have a large impact force, otherwise it is difficult to flush away the attached fine coal particles, and the anti-clogging effect is average. In addition, the water consumption is increased, resulting in a waste of water resources. Utility Model Content

[0003] The purpose of the utility model is to provide a coal slime separation and dewatering screen in order to solve the above problems.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A coal slime segregation and dewatering screen comprises a base, a supporting mechanism is installed on the top of the base, a screen box is installed on the top of the supporting mechanism, a fine screening mechanism is provided at the bottom of the screen box, the fine screening mechanism comprises a hopper, the hopper is fixed to the bottom of the screen box, a screen is fixedly connected to the bottom of the hopper, the screen is semi-cylindrical, a rotating shaft is provided in the screen, a spiral sheet is fixed on the rotating shaft, the rotating shaft is rotatably connected to the hopper, a sweeping mechanism is provided at the bottom of the screen, and a power mechanism for driving the rotating shaft and the sweeping mechanism is provided at the bottom of the screen box.

[0006] Preferably, the sweeping mechanism includes a bearing seat, which is fixedly connected to the bottom of the screen box, a reciprocating screw rod is rotatably connected to the bearing seat, a guide rod is fixedly connected to the bearing seat, a translation block is threadedly connected to the reciprocating screw rod, the translation block is slidably connected to the guide rod, and a sweeping plate is fixedly connected to the side of the translation block close to the screen, the sweeping plate is semicircular, and the sweeping plate is attached to the outer wall of the screen.

[0007] Preferably, the fine screening mechanism includes a motor, the motor is fixedly connected to the bottom of the screen box, the output shaft of the motor is fixedly connected to the rotating shaft, the output shaft of the motor is fixedly connected to a driving pulley, the driving pulley is connected to a belt, the other end of the belt is connected to a driven pulley, and the driven pulley is fixedly connected to the reciprocating screw.

[0008] Preferably, the supporting mechanism includes a supporting leg, the supporting leg is fixedly connected to the top of the base, the top of the supporting leg is fixedly connected to a spring, and the top of the spring is fixedly connected to a connecting seat.

[0009] Preferably, the screen box includes a shell, the shell is fixedly connected to the connecting seat, a vibration motor is fixedly connected to the shell, a polyurethane screen plate is installed at the bottom end of the shell, and the polyurethane screen plate is located above the hopper.

[0010] Preferably, a water tank is installed on the top of the base, a drain pipe is connected to the rear side of the water tank, and the water tank is located below the screen.

[0011] The beneficial effect is that during the dehydration process, fine coal falls onto the screen, and the rotation of the spiral blades pushes the fine coal particles to move. The spiral blades scrape the screen, which can prevent the fine coal particles from clogging the screen. On the other hand, the fine coal particles can be screened more thoroughly without the need for water flow to flush them again, which saves water resources and avoids the waste of fine coal particles. In addition, by arranging a sweeping mechanism at the bottom of the screen, it can further prevent fine coal particles from clogging the screen, and the use effect is better.

[0012] Additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a three-dimensional diagram of a coal slime separation and dewatering screen according to the present invention;

[0015] Figure 2 This is a left side view of a coal slime separation and dewatering screen according to the present invention;

[0016] Figure 3 This is a three-dimensional diagram of the bottom structure of the screen box of a coal slime separation and dewatering screen described in the utility model;

[0017] Figure 4 This is a left side cross-sectional view of the fine screen mechanism of the coal slime separation and dewatering screen described in the utility model;

[0018] Figure 5 This is a three-dimensional diagram of the scraping mechanism of the coal slime separation and dewatering screen described in the utility model;

[0019] Figure 6 This is a coal slime separation and dewatering screen described in the utility model Figure 3 A magnified view of the structure in the middle.

[0020] The accompanying drawings are marked as follows: 1. Base; 2. Support mechanism; 201. Leg; 202. Spring; 203. Connecting seat; 3. Screen box; 301. Shell; 302. Vibration motor; 303. Polyurethane screen plate; 4. Fine screening mechanism; 401. Hopper; 402. Screen; 403. Rotating shaft; 404. Spiral sheet; 5. Scraping mechanism; 501. Bearing seat; 502. Reciprocating screw; 503. Guide rod; 504. Translation block; 505. Scraping plate; 6. Power mechanism; 601. Motor; 602. Driving pulley; 603. Belt; 604. Driven pulley; 7. Water tank; 701. Drain pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] like Figures 1-6 As shown, a coal slime separation and dewatering screen includes a base 1, a supporting mechanism 2 is installed on the top of the base 1, a screen box 3 is installed on the top of the supporting mechanism 2, the supporting mechanism 2 includes a support leg 201, the support leg 201 is welded to the top of the base 1, the top of the support leg 201 is fixedly connected to a spring 202, the top of the spring 202 is fixedly connected to a connecting seat 203, the screen box 3 includes a shell 301, the shell 301 is fixedly connected to the connecting seat 203, a feed port is opened on the rear side of the shell 301, a vibration motor 302 is fixedly connected to the shell 301, a polyurethane sieve plate 303 is installed at the bottom end of the shell 301, the polyurethane sieve plate 303 is located above the hopper 401, the coal slime is poured into the screen box 3 through the feed port on the rear side of the shell 301, the entire screen box 3 vibrates when the vibration motor 302 is working, and the coal slime is dehydrated on the polyurethane sieve plate 303.

[0025] A fine screening mechanism 4 is provided at the bottom of the screen box 3, and the fine screening mechanism 4 includes a hopper 401, which is fixed to the bottom of the screen box 3. Specifically, the hopper 401 is connected to the bottom of the shell 301 by screws, and the bottom of the hopper 401 is connected to a screen 402 by screws. The screen 402 is semi-cylindrical, and a rotating shaft 403 is provided in the screen 402. A spiral piece 404 is fixed on the rotating shaft 403, and the rotating shaft 403 is connected to the hopper 401 through a bearing. During the dehydration process of the coal slime on the polyurethane screen plate 303, some fine coal particles will pass through the polyurethane screen plate 303 and fall onto the screen 402. The fine coal particles on the screen 402 are scraped off by the rotation of the spiral piece 404 and the fine coal particles are pushed forward, and finally the fine coal particles are discharged from the front end of the screen 402.

[0026] The bottom of the screen 402 is provided with a sweeping mechanism 5, and the bottom of the screen box 3 is provided with a power mechanism 6 for driving the rotating shaft 403 and the sweeping mechanism 5 to operate. The sweeping mechanism 5 includes a bearing seat 501, and the bearing seat 501 is fixedly connected to the bottom of the screen box 3. Specifically, the bearing seat 501 is connected to the bottom of the shell 301 by screws. A reciprocating screw rod 502 is connected to the bearing seat 501 through a bearing. A guide rod 503 is fixedly connected to the bearing seat 501. A translation block 504 is threadedly connected to the reciprocating screw rod 502, and the translation block 504 slides with the guide rod 503. The scraper plate 505 is connected to the side of the translation block 504 close to the screen 402 by screws. The scraper plate 505 is semicircular, and the inner wall of the scraper plate 505 is provided with bristles. The scraper plate 505 is attached to the outer wall of the screen 402. The reciprocating screw rod 502 is used to drive the translation block 504 to move back and forth, so that the scraper plate 505 moves back and forth at the bottom of the screen 402. The bristles on the scraper plate 505 will enter the mesh of the screen 402, thereby playing a role in clearing and preventing blockage of the screen 402, and can further avoid blockage of the screen 402.

[0027] The fine screening mechanism 4 includes a motor 601, which is fixedly connected to the bottom of the screen box 3. Specifically, the motor 601 is connected to the bottom of the shell 301 by screws, and the output shaft of the motor 601 is connected to the rotating shaft 403 by a coupling. The output shaft of the motor 601 is fixedly connected to a driving pulley 602, and the driving pulley 602 is connected to a belt 603. The other end of the belt 603 is connected to a driven pulley 604, and the driven pulley 604 is fixedly connected to the reciprocating screw rod 502. The motor 601 directly drives the rotating shaft 403 to rotate, and at the same time uses the driving pulley 602, belt 603 and driven pulley 604 to make the reciprocating screw rod 502 rotate together, so that the spiral piece 404 and the scraper plate 505 work at the same time to achieve better use effect.

[0028] A water tank 7 is installed on the top of the base 1 , and a drain pipe 701 is connected to the rear side of the water tank 7 . The water tank 7 is located below the screen 402 .

[0029] Working principle: When in use, the coal slime is dehydrated on the polyurethane screen plate 303, and the fine coal particles pass through the polyurethane screen plate 303 and fall onto the screen 402. The motor 601 drives the rotating shaft 403 to rotate, and the rotating shaft 403 drives the spiral piece 404 to rotate. The spiral piece 404 scrapes the fine coal particles accumulated on the screen 402 to prevent the screen 402 from being blocked, and the spiral piece 404 pushes the fine coal particles forward. The fine coal particles are finally discharged from the front end of the screen 402, and the dehydrated water passes through the screen 402 and falls into the water tank 7. The motor 601 drives the reciprocating screw 502 to rotate through the active pulley 602, the belt 603 and the driven pulley 604. The reciprocating screw 502 drives the translation block 504 to move back and forth. The translation block 504 drives the sweeping plate 505 to move, and the sweeping plate 505 dredges the screen 402 to further prevent the screen 402 from being blocked.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A coal slime separation and dewatering screen, comprising a base (1), a support mechanism (2) mounted on the top of the base (1), a screen box (3) mounted on the top of the support mechanism (2), characterized in that: A fine screening mechanism (4) is provided at the bottom of the screen box (3), and the fine screening mechanism (4) includes a hopper (401). The hopper (401) is fixed to the bottom of the screen box (3). A screen (402) is fixedly connected to the bottom of the hopper (401). The screen (402) is semi-cylindrical. A rotating shaft (403) is provided inside the screen (402). A spiral sheet (404) is fixed on the rotating shaft (403). The rotating shaft (403) is rotatably connected to the hopper (401). A sweeping mechanism (5) is provided at the bottom of the screen (402). A power mechanism (6) for driving the rotating shaft (403) and the sweeping mechanism (5) to operate is provided at the bottom of the screen box (3).

2. The coal slime separation and dewatering screen according to claim 1, characterized in that: The scraping mechanism (5) includes a bearing seat (501), the bearing seat (501) is fixedly connected to the bottom of the screen box (3), a reciprocating screw rod (502) is rotatably connected to the bearing seat (501), a guide rod (503) is fixedly connected to the bearing seat (501), a translation block (504) is threadedly connected to the reciprocating screw rod (502), the translation block (504) is slidably connected to the guide rod (503), and a scraping plate (505) is fixedly connected to the side of the translation block (504) close to the screen (402), the scraping plate (505) is semicircular, and the scraping plate (505) is attached to the outer wall of the screen (402).

3. The coal slime separation and dewatering screen according to claim 2, characterized in that: The fine screening mechanism (4) comprises a motor (601), the motor (601) being fixedly connected to the bottom of the screen box (3), the output shaft of the motor (601) being fixedly connected to the rotating shaft (403), a driving pulley (602) being fixedly connected to the output shaft of the motor (601), a belt (603) being connected to the driving pulley (602), the other end of the belt (603) being connected to a driven pulley (604), and the driven pulley (604) being fixedly connected to the reciprocating screw rod (502).

4. The coal slime separation and dewatering screen according to claim 1, characterized in that: The support mechanism (2) comprises a support leg (201), the support leg (201) being fixedly connected to the top of the base (1), the top of the support leg (201) being fixedly connected to a spring (202), and the top of the spring (202) being fixedly connected to a connecting seat (203).

5. The coal slime separation and dewatering screen according to claim 4, characterized in that: The screen box (3) comprises a shell (301), the shell (301) is fixedly connected to the connecting seat (203), a vibration motor (302) is fixedly connected to the shell (301), a polyurethane screen plate (303) is installed at the bottom end of the shell (301), and the polyurethane screen plate (303) is located above the hopper (401).

6. The coal slime separation and dewatering screen according to claim 1, characterized in that: A water tank (7) is installed on the top of the base (1), a drain pipe (701) is connected to the rear side of the water tank (7), and the water tank (7) is located below the screen (402).

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