Self-cleaning type cleaning device for coal washing in coal mine

Abstract

The invention discloses a self-cleaning type cleaning device for coal mine coal washing, and relates to the technical field of self-cleaning type cleaning devices for coal mine coal washing, the self-cleaning type cleaning device for coal mine coal washing comprises a shell, the upper surface of the shell is provided with a material inlet, the bottom surface of the shell is hinged with a bottom plate, the back surface of the shell is provided with a water outlet, and the water outlet is provided with a water inlet. A motor is fixed to the side wall of the shell, and a screening and washing device for conveniently separating a coal mine from impurities when the coal mine is cleaned is arranged on the inner wall of the shell. According to the self-cleaning type cleaning device for coal washing of the coal mine, by arranging the screening and washing device, when the coal mine is cleaned, a first gear drives a crushing rod to rotate through a second gear, and meanwhile, the first gear is matched with a connecting rod and a sliding plate to drive a screen to move left and right, so that impurities fall onto a drainage plate along with water flow, and the coal mine slides to the position above a bottom plate along the screen; and the crushed coal mine is separated from the impurities, so that the phenomenon that the cleaned coal mine and the impurities roll down together, and ineffective cleaning is caused is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of self-cleaning cleaning devices for coal washing in coal mines, in particular to a self-cleaning cleaning device for coal washing in coal mines. Background Art

[0002] The raw coal mined from coal mines usually contains a large amount of impurities, such as mud, stones, coal gangue, etc. Direct use will reduce the combustion efficiency of coal and increase the ash content. Coal washing can effectively improve the quality of coal, remove some harmful substances such as sulfur in the raw coal, reduce the harmful gases and dust generated during the combustion process, and reduce environmental pollution.

[0003] Patent announcement number CN221816371U is a coal washer with dustproof function, including a box, a stirring motor, a rotating rod, and a crushing rod. The inner wall of the box is slidably connected with a water baffle, a sewage pipe is fixedly installed at the lower left corner of the box, and support rods are fixedly installed at the four corners of the bottom of the box. A feed pipe is fixedly installed at the right end of the upper side of the box, an exhaust fan is arranged on the left side of the feed pipe, a dust suction pipe is fixedly connected to the right side of the exhaust fan, an air duct is fixedly connected to the left side of the exhaust fan, a water tank is arranged on the left side of the exhaust fan, an exhaust pipe and a water exchange pipe are fixedly installed on the upper side of the water tank from left to right, and a reinforcement rod is fixedly installed on the inner side of the support rod. In the above application, through the coordinated use of the exhaust fan, the dust suction pipe, the air duct and the water tank, the dust will be absorbed and dissolved by the water in the water tank, so as to avoid dust spreading in the air, not posing a threat to the health of coal washing workers, and improving the safety of the coal washing machine.

[0004] However, the above-mentioned coal washing device cannot effectively separate the coal from the wastewater and impurities after washing, so that the cleaned coal is still soaked in the wastewater, and the impurities may be mixed with the coal again in this process, resulting in poor coal washing effect. When the coal is taken out, there may still be a lot of impurities remaining, affecting the quality and use effect of the coal. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a self-cleaning coal cleaning device for coal mines, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a self-cleaning coal mine cleaning device, comprising a shell, an upper surface of the shell is provided with a feeding port, an upper surface of the shell is fixed with a connecting water pipe, the connecting water pipe is connected to the shell, an upper surface of the shell is fixed with a fan, the bottom surface of the shell is hinged with a bottom plate, the back of the shell is provided with a drain outlet, the bottom surface of the shell is fixed with supporting legs, the side wall of the shell is fixed with a motor, the output end of the motor is fixed with a rotating shaft, the rotating shaft passes through the side wall of the shell and is rotatably connected at the penetration point, a screening device for separating coal and impurities when cleaning the coal is provided at the end of the rotating shaft away from the motor, an auxiliary device for flipping the screening device when cleaning the coal is provided above the screening device, and a limiting device for automatically opening the bottom plate for discharging after cleaning is completed is provided on the inner wall of the shell.

[0007] Among them, the screening and washing device includes a first gear, a second gear, a breaking rod, a connecting rod, a sliding plate, a screen, a trapezoidal plate, a hinged plate, a first hinged rod, a separation plate, a second hinged rod and a drainage plate. The first gear is fixedly connected to the end of the rotating shaft away from the motor. The motor starts to drive the rotating shaft to rotate, and the rotation of the rotating shaft drives the first gear to rotate. The first gear is rotatably connected to the side wall of the inner wall of the shell.

[0008] According to the above technical solution, a fixed shaft is fixed to the side wall of the inner wall of the shell, the fixed shaft passes through the second gear and is rotatably connected at the penetration point, the second gear is meshed with the first gear, and the second gear is driven to rotate when the first gear rotates, the breaking rod is fixedly connected to the side of the second gear, and the rotation of the second gear drives the breaking rod to rotate, the connecting rod is rotatably connected to the side of the first gear away from the rotating shaft, and the rotation of the first gear drives the connecting rod to rotate around the first gear.

[0009] According to the above technical solution, the sliding plate is slidably connected to the side wall of the inner wall of the shell, the end of the connecting rod away from the first gear passes through the sliding plate, and is slidably connected at the penetration point, the connecting rod drives the sliding plate to slide left and right, the screen is fixedly connected to the side wall of the sliding plate, the sliding plate slides left and right to drive the screen to move left and right, the trapezoidal plate is fixedly connected to the bottom surface of the sliding plate, the sliding plate slides left and right to drive the trapezoidal plate to slide left and right, and the trapezoidal plate is slidably connected to the side wall of the inner wall of the shell.

[0010] According to the above technical solution, the hinge plate is slidably connected to the side wall of the inner wall of the shell, the bottom end of the hinge plate is slidably connected to the inclined surface of the trapezoidal plate, the trapezoidal plate slides left and right to drive the hinge plate to slide up and down, one end of the first hinge rod is hinged to the side wall of the hinge plate, the hinge plate slides up and down to drive the first hinge rod to rotate, and the end of the first hinge rod away from the hinge plate is hinged to the back side of the separation plate.

[0011] According to the above technical solution, a guide bar is fixed on the front side of the inner wall of the shell, and the guide bar passes through the separation plate and is slidably connected at the penetration point. The rotation of the first hinge rod drives the separation plate to slide. The side wall of the trapezoidal plate is fixed with a limiting axis, and the limiting rod passes through the second hinge rod and is rotatably connected at the penetration point. The trapezoidal plate slides left and right to drive the second hinge rod to rotate. The end of the second hinge rod away from the limiting axis is hinged to the bottom surface of the drain board. The side wall of the inner wall of the shell is fixed with a limiting rod, and the limiting rod passes through the front end of the drain board and is rotatably connected at the penetration point. The rotation of the second hinge rod drives the drain board to rotate.

[0012] According to the above technical solution, the auxiliary device includes a rotating table, a rotating rod, a protrusion, a connecting ring, an auxiliary rod, a blade and a first spring. The rotating table is rotatably connected to the back side of the inner wall of the shell, the rotating rod is fixedly connected to the side wall of the rotating table, and the rotating rod passes through the side wall of the screen and is rotatably connected at the penetration point.

[0013] According to the above technical solution, the protrusion is fixedly connected to the part where the side wall of the screen is penetrated, a sliding groove is provided on the outer wall of the rotating rod, the outer wall of the protrusion is in contact with the inner wall of the sliding groove, the screen moves left and right to drive the rotating rod to rotate, the rotating rod penetrates the connecting ring, and is slidingly connected at the penetration part, the rotation of the rotating rod drives the connecting ring to rotate, the auxiliary rod is fixedly connected to the side wall of the connecting ring, and the rotation of the connecting ring drives the auxiliary rod to rotate, the blade is fixedly connected to the outer wall of the auxiliary rod, the first spring is fixedly connected to the side of the connecting ring away from the auxiliary rod, and the end of the first spring away from the connecting ring is fixedly connected to the inner wall of the screen.

[0014] According to the above technical solution, the limiting device includes a limiting block, a lifting plate, a third hinged rod, a limiting plate and a second spring. The limiting block is fixedly connected to the upper surface of the bottom plate, and the lifting plate is slidably connected to the side wall of the inner wall of the shell.

[0015] According to the above technical solution, one end of the third hinged rod is hinged to the bottom surface of the lifting plate, and the other end of the third hinged rod is hinged to the back side of the limit plate. When the lifting plate slides up and down, the third hinged rod is driven to rotate, and the rotation of the third hinged rod drives the hinge plate to slide. A limit strip is fixed to the bottom surface of the limit plate, and the sliding of the hinge plate drives the limit strip to move. The second spring is fixedly connected to the back side of the limit strip, and the end of the second spring away from the limit strip is fixedly connected to the inner wall of the shell.

[0016] The present invention provides a self-cleaning coal cleaning device for coal mines. It has the following beneficial effects:

[0017] 1. The present invention sets a screening and washing device. When cleaning the coal, the first gear drives the crushing rod to rotate through the second gear. At the same time, the first gear cooperates with the connecting rod and the sliding plate to drive the screen to move left and right, driving the coal and debris on the screen to shake, so that the debris is accelerated to separate from the coal surface. As the water flows through the screen and falls onto the drainage plate, the coal slides along the screen to the top of the bottom plate, separating the broken coal from the impurities, and preventing the cleaned coal from rolling together with the impurities, causing ineffective cleaning; when sliding, the sliding plate also drives the trapezoidal plate to slide, pushing the hinged plate The first hinge rod drives the separation plate to slide in the direction of the drainage plate, so that the separation plate pushes the separated impurities away from the coal, further separating the cleaned coal from the impurities. When sliding, the trapezoidal plate pushes the drainage plate away from the drainage port through the second hinge rod, so that water and impurities can be discharged from the drainage port faster, reducing the waste water and impurities remaining when the bottom plate is opened, avoiding the waste water, impurities and the cleaned coal from being mixed again, thereby causing the cleaned coal to be covered with impurities again after cleaning, reducing the combustion efficiency of the coal when used.

[0018] 2. The present invention sets an auxiliary device. When cleaning the coal mine, the left and right movement of the screen cooperates with the protrusion and the slide groove to drive the rotating rod to rotate. When the rotating rod rotates, it drives the connecting ring and the auxiliary rod to rotate around the rotating rod to turn the coal mine over, further increasing the area of ​​the coal mine contacting the water flow, making the coal mine cleaned more thoroughly and improving the cleaning effect of the coal mine; when the rotating rod drives the connecting ring to rotate, it also drives the blade to rotate. When the first spring is driven to move through the screen, it can drive the connecting ring, the auxiliary rod and the blade to move, so that the blade can move with the screen while rotating, and the larger coal blocks on the screen are broken, thereby facilitating the cleaning operation of various positions of the coal blocks, improving the cleaning efficiency, reducing the cleaning time, and preventing the large coal blocks from being inconvenient to clean at various positions.

[0019] 3. The present invention sets a limit device. When a certain amount of coal has been cleaned, the accumulated coal will lift the lifting plate, and cooperate with the third hinged rod and the limit plate to drive the limit bar to move, compressing the second spring and releasing the limit on the bottom plate, so that the bottom plate can be opened, which is convenient for taking out the cleaned coal and avoiding the accumulation of the cleaned coal in the shell and causing blockage. At the same time, when the bottom plate rotates upward and closes, the limit block pushes the inclined surface of the limit bar to make the limit bar compress the second spring. When it is fully closed, the limit bar is reset by the elastic force of the second spring, and the bottom plate is limited again for the next coal receiving operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the full cross-section structure of the present invention;

[0023] Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure of area A;

[0024] Figure 5 It is a schematic diagram of the structure of a partial screening and washing device of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the auxiliary device of the present invention;

[0026] Figure 7 For the present invention Figure 6 A schematic diagram of the local enlarged structure of area B;

[0027] Figure 8 This is a schematic diagram of a half-section structure of a shell of the present invention;

[0028] Fig. 9 This is a schematic diagram of the full cross-sectional structure of the screen side wall of the present invention;

[0029] Fig.10 This is a schematic diagram of the internal structure of the screen part of the present invention;

[0030] Fig.11 It is a schematic diagram of the local structure of the present invention.

[0031] In the figure: 1. shell; 2. feed port; 3. bottom plate; 4. drain port; 5. motor; 61. first gear; 62. second gear; 63. crushing rod; 64. connecting rod; 65. sliding plate; 66. screen; 67. trapezoidal plate; 68. hinged plate; 69. first hinged rod; 610. separation plate; 611. second hinged rod; 612. drain plate; 71. rotating table; 72. rotating rod; 73. protrusion; 74. connecting ring; 75. auxiliary rod; 76. blade; 77. first spring; 81. limit block; 82. lifting plate; 83. third hinged rod; 84. limit plate; 85. second spring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 11One embodiment of the present invention is as follows: a self-cleaning coal washing device for coal mines comprises a shell 1, an upper surface of the shell 1 is provided with a feed port 2, a connecting water pipe is fixed on the upper surface of the shell 1, the connecting water pipe is communicated with the shell 1, the coal is put in from the feed port 2, the connecting water pipe supplies water into the shell 1, and the coal is cleaned, a fan is fixed on the upper surface of the shell 1, the fan is connected to the shell 1, and the dust generated when cleaning the coal is extracted, a bottom plate 3 is hinged on the bottom surface of the shell 1, the bottom plate 3 is flipped downward to open the bottom plate 3, and the coal after cleaning is conveniently taken out, a drain port 4 is provided on the back of the shell 1, and impurities and wastewater generated after the coal cleaning are discharged from the drain port 4, a supporting leg is fixed on the bottom surface of the shell 1, a motor 5 is fixed on the side wall of the shell 1, a rotating shaft is fixed on the output end of the motor 5, the motor 5 drives the rotating shaft to rotate, the rotating shaft passes through the side wall of the shell 1, and is rotatably connected at the penetration point, and a screening washing device is arranged at one end of the rotating shaft away from the motor 5 for conveniently separating the coal and impurities when cleaning the coal.

[0034] The screening and washing device includes a first gear 61, a second gear 62, a breaker rod 63, a connecting rod 64, a sliding plate 65, a screen 66, a trapezoidal plate 67, a hinged plate 68, a first hinged rod 69, a separation plate 610, a second hinged rod 611 and a drain plate 612. The first gear 61 is fixedly connected to the end of the rotating shaft away from the motor 5. The rotating shaft drives the first gear 61 to rotate. The first gear 61 is rotatably connected to the side wall of the inner wall of the shell 1. The side wall of the inner wall of the shell 1 is fixed with a fixed shaft, which passes through the second gear 62 and is rotatably connected at the penetration point. The second gear 62 is meshed with the first gear 61. The rotation of the first gear 61 drives the second gear 62 to rotate. The breaker rod 63 is fixedly connected to the side of the second gear 62. When the second gear 62 rotates, The movable crushing rod 63 breaks the coal mine. After the coal mine is broken, the contact area between the coal mine and the water flow is increased, and the cleaning efficiency of the coal mine is further improved. The connecting rod 64 is rotatably connected to the side of the first gear 61 away from the rotating shaft. When the first gear 61 rotates, it drives one end of the connecting rod 64 to rotate. The sliding plate 65 is slidably connected to the side wall of the inner wall of the shell 1. The end of the connecting rod 64 away from the first gear 61 penetrates the sliding plate 65, and the penetration is slidably connected. When the first gear 61 drives the connecting rod 64 to rotate, the connecting rod 64 drives the sliding plate 65 to slide left and right. The screen 66 is fixedly connected to the side wall of the sliding plate 65. When the sliding plate 65 slides left and right, it drives the screen 66 to move left and right. The broken coal mine falls onto the screen 66, further separating the coal mine and impurities. Screening separation is performed, the trapezoidal plate 67 is fixedly connected to the bottom surface of the sliding plate 65, and the trapezoidal plate 67 is slidably connected to the side wall of the inner wall of the shell 1. When the sliding plate 65 slides, the trapezoidal plate 67 is driven to slide, and the hinged plate 68 is slidably connected to the side wall of the inner wall of the shell 1. The bottom end of the hinged plate 68 is slidably connected to the inclined surface of the trapezoidal plate 67. When the trapezoidal plate 67 slides, it pushes the hinged plate 68 to slide upward. One end of the first hinged rod 69 is hinged to the side wall of the hinged plate 68, and the end of the first hinged rod 69 away from the hinged plate 68 is hinged to the back side of the separation plate 610. When the hinged plate 68 slides upward, it drives the first hinged rod 69 to rotate. A guide bar is fixed on the front side of the inner wall of the shell 1. The guide bar passes through the separation plate 610 and is slidably connected at the penetration point. The first hinged rod 69 rotates When the separation plate 610 is driven to slide, the side wall of the trapezoidal plate 67 is fixed with a limit axis, the limit rod penetrates the second hinge rod 611, and is rotatably connected at the penetration point. When the trapezoidal plate 67 slides, the second hinge rod 611 is driven to rotate. The end of the second hinge rod 611 away from the limit axis is hinged to the bottom surface of the drain plate 612. The side wall of the inner wall of the shell 1 is fixed with a limit rod, the limit rod penetrates the front end of the drain plate 612, and is rotatably connected at the penetration point. When the second hinge rod 611 rotates, it pushes the end of the drain plate 612 away from the limit rod to rise. When the screening and washing device is used to clean the coal mine, the first gear 61 drives the crushing rod 63 to rotate through the second gear 62. At the same time, the first gear 61 cooperates with the connecting rod 64 and the sliding plate 65 to drive the screen 66 to move left and right.The coal and debris on the screen 66 are driven to shake, so that the debris is accelerated to leave the coal surface, and as the water flows through the screen 66 and falls onto the drain plate 612, the coal slides along the screen 66 to the top of the bottom plate 3, separating the crushed coal from the impurities, and preventing the cleaned coal from rolling together with the impurities, causing ineffective cleaning; when sliding, the sliding plate 65 also drives the trapezoidal plate 67 to slide, pushing the hinged plate 68 to slide upward, and cooperates with the first hinged rod 69 to drive the separation plate 610 to slide in the direction of the drain plate 612, further separating the cleaned coal from the impurities. When sliding, the trapezoidal plate 67 pushes the drain plate 612 away from the drain port 4 through the second hinged rod 611, so that the water flow and impurities can be discharged from the drain port 4 faster, reducing the wastewater and impurities remaining when the bottom plate 3 is opened, and preventing the wastewater, impurities and the cleaned coal from being mixed again, so that the surface of the cleaned coal is covered with impurities again after cleaning, which reduces the combustion efficiency of the coal when it is used.

[0035] When the present embodiment is working: the motor 5 is started, the coal is put in from the feed port 2, the water source is connected to the water pipe to supply water into the shell 1, and the coal on the screen 66 is cleaned. The motor 5 drives the shaft to rotate, and the shaft drives the first gear 61 to rotate. The rotation of the first gear 61 drives the second gear 62 to rotate. When the second gear 62 rotates, it drives the crushing rod 63 to break the coal. The broken coal falls onto the screen 66. The large pieces of coal slide along the screen 66 to the top of the bottom plate 3 on the left side. The impurities pass through the screen 66 and fall to the top of the drain plate 612. When the first gear 61 rotates, it drives one end of the connecting rod 64 to rotate, and the other end of the connecting rod 64 is slidably connected to the inner wall of the sliding plate 65, and the sliding plate 65 is slidably connected to the inner wall of the shell 1, so the first gear 61 is driven to rotate. When a gear 61 drives the connecting rod 64 to rotate, the connecting rod 64 drives the sliding plate 65 to slide left and right. When the sliding plate 65 slides left and right, it drives the screen 66 to move left and right, further screening and separating the coal and impurities. When the sliding plate 65 slides, it drives the trapezoidal plate 67 to slide. When the trapezoidal plate 67 slides, it pushes the hinged plate 68 to slide upward. When the hinged plate 68 slides upward, it drives the first hinged rod 69 to rotate. When the first hinged rod 69 rotates, it drives the separation plate 610 to slide in the direction of the drainage plate 612. When the trapezoidal plate 67 slides, it drives the second hinged rod 611 to rotate. When the second hinged rod 611 rotates, it pushes the drainage plate 612 to rise away from the end of the limit rod, so that the impurities are discharged from the drainage port 4 along with the wastewater generated after cleaning the coal.

[0036] See also Figure 1-Figure 11On the basis of the above embodiment, in another embodiment of the present invention, an auxiliary device for flipping the screening and washing device when cleaning the coal mine is arranged above the screening and washing device, and the auxiliary device comprises a rotating table 71, a rotating rod 72, a protrusion 73, a connecting ring 74, an auxiliary rod 75, a blade 76 and a first spring 77. The rotating table 71 is rotatably connected to the back of the inner wall of the shell 1, and the rotating rod 72 is fixedly connected to the side wall of the rotating table 71. The rotating rod 72 penetrates the side wall of the screen 66, and the penetration part is fitted. The protrusion 73 is fixedly connected to the penetration part of the side wall of the screen 66. The outer wall of the rotating rod 72 is provided with a slide groove, and the outer wall of the protrusion 73 and the slide groove are The inner wall of the groove fits well, and when the screen 66 moves left and right, since the protrusion 73 is fixed, and the protrusion 73 on the side wall of the screen 66 is slidably connected to the sliding groove on the outer wall of the rotating rod 72, when the rotating rod 72 and the screen 66 move relatively, the protrusion 73 will drive the rotating rod 72 to rotate through the sliding groove, and the rotating rod 72 passes through the connecting ring 74, and the penetration is slidably connected. When the rotating rod 72 rotates, it drives the connecting ring 74 to rotate, and the auxiliary rod 75 is fixedly connected to the side wall of the connecting ring 74. When the connecting ring 74 rotates, it drives the auxiliary rod 75 to rotate, and the auxiliary rod 75 rotates around the connecting ring 74 together with the connecting ring 74 to move the coal mine The auxiliary rod 75 is turned over to facilitate comprehensive cleaning of the coal mine. The blade 76 is fixedly connected to the outer wall of the auxiliary rod 75. The blade 76 can cut the coal blocks and further crush the coal blocks, so that the cleaning water has a better cleaning effect on the coal blocks. The first spring 77 is fixedly connected to the side of the connecting ring 74 away from the auxiliary rod 75. The end of the first spring 77 away from the connecting ring 74 is fixedly connected to the inner wall of the screen 66. When the auxiliary device cleans the coal mine, the screen 66 moves left and right to cooperate with the protrusion 73 and the slide groove to drive the rotating rod 72 to rotate. When the rotating rod 72 rotates, it drives the connecting ring 74 and the auxiliary rod 75 to rotate around the rotating rod. 72 rotates to turn the coal over, further increasing the area of ​​the coal in contact with the water flow, making the coal cleaned more thoroughly and improving the cleaning effect of the coal; when the rotating rod 72 drives the connecting ring 74 to rotate, it also drives the blade 76 to rotate. When the first spring 77 is driven to move through the screen 66, it can drive the connecting ring 74, the auxiliary rod 75 and the blade 76 to move, so that the blade 76 can move with the screen 66 while rotating, and break the larger coal blocks on the screen 66, thereby facilitating the cleaning operation of various positions of the coal blocks, improving the cleaning efficiency and reducing the cleaning time.

[0037] The inner wall of the shell 1 is provided with a limiting device which automatically opens the bottom plate 3 for discharging after cleaning is completed. The limiting device includes a limiting block 81, a lifting plate 82, a third hinged rod 83, a limiting plate 84 and a second spring 85. The limiting block 81 is fixedly connected to the upper surface of the bottom plate 3, and the lifting plate 82 is slidably connected to the side wall of the inner wall of the shell 1. The cleaned coal slides along the screen 66 to the top of the bottom plate 3 on the left side of the shell 1. When the coal is piled up to a certain height, the lifting plate 82 is lifted up. One end of the third hinge rod 83 is hinged to the bottom surface of the lifting plate 82. When the lifting plate 82 slides upward, the third hinge rod 83 is driven to rotate. The other end of the third hinge rod 83 is hinged to the back of the limit plate 84. When the third hinge rod 83 rotates, it pulls the limit plate 84 to slide in the direction away from the limit block 81. The bottom surface of the limit plate 84 is fixed with a limit strip. The limit plate 84 slides in the direction away from the limit block 81 to drive the limit strip to separate from the limit block 81. The second spring 85 is fixed When the cleaning process is complete, the lifting plate 82 is lifted and the lifting and lowering plates 82 are lifted. When the cleaning process is complete, the lifting plate 82 is lifted and the lifting and lowering plates 82 are lifted. When the cleaning process is complete, the lifting plate 82 is lifted and the lifting and lowering plates 82 are lifted. When the cleaning process is complete, the lifting plate 82 is lifted and the lifting and lowering plates 82 are lifted. When the cleaning process is complete, the lifting and lowering plates 82 are ...

[0038] When the present embodiment is working, when the screen 66 moves left and right, the protrusion 73 on the side wall of the screen 66 is slidably connected with the slide groove on the outer wall of the rotating rod 72 to drive the rotating rod 72 to rotate. When the rotating rod 72 rotates, it drives the connecting ring 74 to rotate. When the connecting ring 74 rotates, it drives the auxiliary rod 75 to rotate. When the auxiliary rod 75 rotates around the rotating rod 72, the coal is turned over. When the screen 66 moves, it can drive the first spring 77 to move, so that the first spring 77 drives the connecting ring 74 to move, so that the auxiliary rod 75 drives the blade 76 to rotate while following the screen 66 to move, so that the blade 76 crushes larger coal blocks.

[0039] The cleaned coal slides along the screen 66 to the top of the bottom plate 3 on the left side of the shell 1. When it is piled to a certain height, the coal lifts the lifting plate 82. When the lifting plate 82 slides upward, it drives the third hinged rod 83 to rotate. When the third hinged rod 83 rotates, it pulls the limit plate 84 to slide away from the limit block 81, so that the limit plate 84 drives the limit bar to separate from the limit block 81. At the same time, the bottom plate 3 opens due to gravity, causing the coal to slide along the bottom plate 3.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning coal cleaning device for coal mines, comprising a housing (1), characterized in that: The upper surface of the shell (1) is provided with a material inlet (2), the upper surface of the shell (1) is fixed with a connecting water pipe, the connecting water pipe is connected to the shell (1), the upper surface of the shell (1) is fixed with a fan, the bottom surface of the shell (1) is hinged with a bottom plate (3), the back of the shell (1) is provided with a drain outlet (4), the bottom surface of the shell (1) is fixed with a supporting leg, the side wall of the shell (1) is fixed with a motor (5), the output end of the motor (5) is fixed with a rotating shaft, the rotating shaft passes through the side wall of the shell (1) and is rotatably connected at the penetration point, the end of the rotating shaft away from the motor (5) is provided with a screening device for separating coal from impurities when cleaning the coal, an auxiliary device for turning the screening device over when cleaning the coal is provided above the screening device, and a limiting device for automatically opening the bottom plate (3) for discharging after cleaning is completed is provided on the inner wall of the shell (1); The screening and washing device comprises a first gear (61), a second gear (62), a crushing rod (63), a connecting rod (64), a sliding plate (65), a screen (66), a trapezoidal plate (67), a hinged plate (68), a first hinged rod (69), a separation plate (610), a second hinged rod (611) and a drainage plate (612); the first gear (61) is fixedly connected to an end of the rotating shaft away from the motor (5); and the first gear (61) is rotatably connected to the side wall of the inner wall of the shell (1).

2. A self-cleaning coal cleaning device for coal mines according to claim 1, characterized in that: A fixed shaft is fixed to the side wall of the inner wall of the housing (1), the fixed shaft passes through the second gear (62) and is rotatably connected at the passing point, the second gear (62) is meshed with the first gear (61), the breaking rod (63) is fixedly connected to the side of the second gear (62), and the connecting rod (64) is rotatably connected to the side of the first gear (61) away from the rotating shaft.

3. A self-cleaning coal cleaning device for coal mines according to claim 2, characterized in that: The sliding plate (65) is slidably connected to the side wall of the inner wall of the shell (1); the end of the connecting rod (64) away from the first gear (61) passes through the sliding plate (65) and is slidably connected at the penetration point; the screen (66) is fixedly connected to the side wall of the sliding plate (65); the trapezoidal plate (67) is fixedly connected to the bottom surface of the sliding plate (65); and the trapezoidal plate (67) is slidably connected to the side wall of the inner wall of the shell (1).

4. A self-cleaning coal cleaning device for coal mines according to claim 3, characterized in that: The hinge plate (68) is slidably connected to the side wall of the inner wall of the shell (1), the bottom end of the hinge plate (68) is slidably connected to the inclined surface of the trapezoidal plate (67), one end of the first hinge rod (69) is hinged to the side wall of the hinge plate (68), and one end of the first hinge rod (69) away from the hinge plate (68) is hinged to the back side of the separation plate (610).

5. A self-cleaning coal cleaning device for coal mines according to claim 4, characterized in that: A guide bar is fixed on the front side of the inner wall of the shell (1), and the guide bar passes through the separation plate (610) and is slidably connected at the penetration point. A limiting axis is fixed on the side wall of the trapezoidal plate (67), and the limiting rod passes through the second hinge rod (611) and is rotatably connected at the penetration point. The end of the second hinge rod (611) away from the limiting axis is hinged to the bottom surface of the drainage plate (612). A limiting rod is fixed on the side wall of the inner wall of the shell (1), and the limiting rod passes through the front end of the drainage plate (612) and is rotatably connected at the penetration point.

6. A self-cleaning coal cleaning device for coal mines according to claim 1, characterized in that: The auxiliary device comprises a rotating platform (71), a rotating rod (72), a protrusion (73), a connecting ring (74), an auxiliary rod (75), a blade (76) and a first spring (77); the rotating platform (71) is rotatably connected to the back side of the inner wall of the housing (1); the rotating rod (72) is fixedly connected to the side wall of the rotating platform (71); the rotating rod (72) penetrates the side wall of the screen (66), and the penetration portion is in close contact with the screen.

7. A self-cleaning coal cleaning device for coal mines according to claim 6, characterized in that: The protrusion (73) is fixedly connected to the part where the side wall of the screen (66) is penetrated, the outer wall of the rotating rod (72) is provided with a sliding groove, the outer wall of the protrusion (73) and the inner wall of the sliding groove are in contact, the rotating rod (72) penetrates the connecting ring (74) and is slidably connected at the penetration part, the auxiliary rod (75) is fixedly connected to the side wall of the connecting ring (74), the blade (76) is fixedly connected to the outer wall of the auxiliary rod (75), the first spring (77) is fixedly connected to the side of the connecting ring (74) away from the auxiliary rod (75), and the end of the first spring (77) away from the connecting ring (74) is fixedly connected to the inner wall of the screen (66).

8. A self-cleaning coal cleaning device for coal mines according to claim 1, characterized in that: The limiting device comprises a limiting block (81), a lifting plate (82), a third hinge rod (83), a limiting plate (84) and a second spring (85); the limiting block (81) is fixedly connected to the upper surface of the bottom plate (3); and the lifting plate (82) is slidably connected to the side wall of the inner wall of the shell (1).

9. A self-cleaning coal cleaning device for coal mines according to claim 8, characterized in that: One end of the third hinged rod (83) is hinged to the bottom surface of the lifting plate (82), and the other end of the third hinged rod (83) is hinged to the back surface of the limiting plate (84). A limiting strip is fixed to the bottom surface of the limiting plate (84), and the second spring (85) is fixedly connected to the back surface of the limiting strip. One end of the second spring (85) away from the limiting strip is fixedly connected to the inner wall of the shell (1).

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