Waste asphalt mixture screening device

Abstract

The utility model provides a waste asphalt mixture screening device. The waste asphalt mixture screening device comprises a screen body, a feeding hopper, a screen mesh, a vibrator, a receiving hopper, a support and an unblocking device. The feeding hopper is arranged at the top of the screen body; the screen mesh is obliquely arranged in the screen body; the vibrator is installed on the side wall of the screen body. The unblocking device comprises a net rack, a top rod, a connecting piece, a reciprocating part, a translation part, a first square cover and a second square cover. According to the device, a blockage clearing device is additionally arranged on each layer of screen, the mesh size of an upper mesh frame of the blockage clearing device is larger than that of the upper layer of screen, and secondary blockage is avoided; and the blockage clearing device can be used for sequentially clearing the odd-numbered line grids and the even-numbered line grids of the screen. According to the device, blocked materials on the screen can be timely and rapidly cleaned, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste asphalt mixture screening, and in particular relates to a waste asphalt mixture screening device. Background Art

[0002] Asphalt concrete is a road paving material made by mixing asphalt with crushed stone, stone chips, mineral powder and other materials. After years of use, the asphalt concrete pavement is damaged due to the gradual aging of asphalt and cannot be used anymore. At this time, it is necessary to use engineering machinery to mill the damaged asphalt concrete surface layer, recycle the old asphalt concrete material, and pave the road with new asphalt concrete material or recycled asphalt concrete material.

[0003] During the screening and recycling of waste asphalt mixture, the viscosity of asphalt increases with the increase of temperature. Especially in the high temperature of summer, waste asphalt concrete particles will adhere to the screen and often block the screen, which requires frequent shutdown for cleaning, which is time-consuming and labor-intensive, affecting production efficiency. In order to solve the above problems, the utility model proposes a waste asphalt mixture screening device. The device can clean the blocked materials on the screen in a timely and rapid manner, thereby improving production efficiency. Summary of the invention

[0004] Asphalt concrete is a road paving material made by mixing asphalt with crushed stone, stone chips, mineral powder and other materials. After years of use, the asphalt concrete pavement is damaged due to the gradual aging of asphalt and cannot be used anymore. At this time, it is necessary to use engineering machinery to mill the damaged asphalt concrete surface layer, recycle the old asphalt concrete material, and pave the road with new asphalt concrete material or recycled asphalt concrete material.

[0005] During the screening and recycling of waste asphalt mixture, the viscosity of asphalt increases with the increase of temperature. Especially in the high temperature of summer, waste asphalt concrete particles will adhere to the screen and often block the screen, which requires frequent shutdown for cleaning, which is time-consuming and labor-intensive, affecting production efficiency. In order to solve the above problems, the utility model proposes a waste asphalt mixture screening device. The device can clean the blocked materials on the screen in a timely and rapid manner, thereby improving production efficiency.

[0006] The utility model provides a waste asphalt mixture screening device, comprising a screen body, a feeding hopper, a screen mesh, a vibrator, a material receiving hopper, a support and a blockage clearing device.

[0007] The feeding hopper is arranged on the top of the screen body; the screen is arranged inside the screen body at an angle, and a discharge port is arranged at the end of the screen; and the vibrator is installed on the side wall of the screen body.

[0008] The receiving hopper is arranged below the screen body and is supported by an independent bracket; the receiving port on the upper part of the receiving hopper is connected with the bottom of the screen body, and the discharge port at the lower part of the receiving hopper is in the shape of a slender slit, and the receiving hopper is used to collect fine materials sieved under the screen above it; the receiving hopper has no contact with the screen body, and the gap between the receiving hopper and the screen body is sealed with a soft connection to prevent dust from escaping.

[0009] The screen body is supported by an independent support, which consists of a column, a vibration spring and a clamp. The upper end of the vibration spring is fixedly connected to the clamp, and the lower end is fixedly connected to the column; the clamp firmly clamps the fixing on the side wall of the screen body, so that the screen body can vibrate up and down on the vibration spring under the action of the vibrator.

[0010] The clearing device includes a grid, a push rod, a connecting piece, a reciprocating part, a translation part, a square cover 1 and a square cover 2; the push rod is a slender column, welded to the grid and perpendicular to its plane. The grid is set just below the screen and parallel to it; the connecting piece passes through the side wall of the screen body, and the reciprocating part, the translation part, the square cover 1 and the square cover 2 are set on the outer side wall of the screen body.

[0011] The grid length of the grid frame is 2 to 5 times the grid length of the screen above it (the specific multiple can be determined according to the material of the grid frame to meet production needs); the grid width of the grid frame is twice the grid width of the screen above it.

[0012] The connecting piece is a T-shaped piece, which consists of a cross arm and a column.

[0013] The reciprocating component is composed of a square plate, an eccentric wheel, a front fixed plate, a rear fixed plate, a bearing, a motor and a tail column.

[0014] One end of the cross arm passes through the square hole on the side wall of the screen body from the outside and is fixedly connected to the grid frame, and the other end of the cross arm is placed on the eccentric wheel.

[0015] A groove with a certain depth parallel to the grid is arranged on the side wall of the screen body below the square hole. The front end edge of the square plate is inserted into the groove and can slide smoothly in the groove.

[0016] A through slot is set in the middle of the square plate, and the through slot is parallel to the front edge of the square plate; the front fixing plate and the rear fixing plate are fixed on the square plate through the through slot; the column passes through the square plate, and a pin is installed in the end hole of the column to prevent the column from separating from the square plate when it reciprocates up and down. A tail column is fixed in the middle of the rear end face of the square plate, and the tail column is perpendicular to its rear end face.

[0017] The bearing is installed in the through hole of the front fixing plate, the eccentric wheel is placed between the front fixing plate and the rear fixing plate, and the rotating shaft of the motor 1 passes through the rear fixing plate, the eccentric wheel and the bearing in sequence. The two ends of the spring are respectively connected to the cross arm and the square plate, so that the cross arm is close to the eccentric wheel.

[0018] The translation component is composed of a second motor, a first square cover and a toggle member. The second through slot is arranged in the middle of the first square cover, and the first through hole is arranged in the middle below the second through slot. The toggle member is in the shape of a long plate, and the second through hole is arranged at one end thereof, and the third through slot is arranged at the other end thereof.

[0019] The rotating shaft of the second motor passes through the through hole 1 and is fixed to the inner side of the square cover 1 with bolts. The through hole 2 of the toggle piece is sleeved on the rotating shaft of the second motor; the through slot 2 of the square cover 1 and the through slot 3 of the toggle piece are sleeved on the tail column of the square plate in sequence, and the through slot 2 is parallel to the square plate; the square cover 1 is fixed to the outer wall of the screen body 1 with bolts, and the square cover 2 is fixed to the square cover 1 with bolts.

[0020] Use a soft seal to seal the square holes on the side wall from the inside of the screen body.

[0021] The inclination angle of the screen is 17°~23°.

[0022] Beneficial effects of the utility model: The utility model provides a waste asphalt mixture screening device, each layer of the screen is equipped with a clearing device, the mesh size of the clearing device is larger than the mesh size of the upper layer of the screen, and secondary blockage will not occur; the clearing device includes a top cleaning component and a translation component, which can clean the odd-numbered rows of mesh and the even-numbered rows of mesh of the screen in turn. The device can clean the blocked materials on the screen in a timely and rapid manner, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the utility model, in which the screen, the mesh frame and the top rod are located inside the screen body.

[0024] Figure 2 It is a structural schematic diagram of the screen and the blockage clearing device of the utility model.

[0025] Figure 3 It is a structural schematic diagram of the utility model blockage clearing device.

[0026] Figure 4 It is a schematic diagram of the assembly structure of the blockage clearing device of the utility model.

[0027] Figure 5 This is a schematic diagram of the installation structure of the toggle member of the utility model.

[0028] In the figure: 1 screen body, 1-1 fixing part, 1-2 square hole, 1-3 groove, 1-4 soft seal; 2 feeding hopper; 3 screen, 3-1 discharge port; 4 vibrator; 5 receiving hopper; 6 support, 6-1 column, 6-2 vibration spring, 6-3 clamp; 7-1 grid, 7-2 top rod, 7-3 connecting part, 7-31 cross arm, 7-32 column, 7-33 spring; 7-4 reciprocating part, 7-4 1 square plate, 7-411 through slot one, 7-42 eccentric wheel, 7-43 front fixed plate, 7-44 rear fixed plate, 7-45 bearing, 7-46 motor one, 7-47 tail column; 7-5 translation component, 7-51 motor two, 7-52 toggle member, 7-521 through hole two, 7-522 through slot three; 7-6 square cover one, 7-61 through hole one, 7-62 through slot two; 7-7 square cover two. DETAILED DESCRIPTION

[0029] like Figure 1 , 2 As shown, the utility model provides a waste asphalt mixture screening device, including a screen body 1, a feeding hopper 2, a screen 3, a vibrator 4, a receiving hopper 5, a support 6 and a blockage clearing device.

[0030] The screen is a square hole screen, and the screen can be set to 2 to 4 layers according to actual production needs, and the mesh size of each layer of the screen decreases from top to bottom. The inclination angle of the screen 3 is 17° to 23°. Figure 1 The screen of the middle screening device is 2 layers.

[0031] The feeding hopper 2 is arranged on the top of the screen body 1; the screen 3 is arranged obliquely inside the screen body 1, and a discharge port 3-1 is arranged at the end of the screen 3; and the vibrator 4 is installed on the side wall of the screen body 1.

[0032] The receiving hopper 5 is arranged below the sieve body 1 and supported by an independent bracket; the receiving port at the top of the receiving hopper 5 is connected to the bottom of the sieve body 1, and the discharge port at the bottom of the receiving hopper 5 is in the shape of a slender slit, and the receiving hopper 5 is used to collect fine materials screened from the sieve above it; the receiving hopper 5 has no contact with the sieve body 1, and the gap between the receiving hopper 5 and the sieve body 1 is sealed with a soft connection to prevent dust from escaping. The fine materials fall into the receiving hopper 5, and then slide along the inclined inner wall of the receiving hopper 5 to the belt conveyor arranged below the discharge port of the receiving hopper 5, and are transported to the silo.

[0033] The sieve body 1 is supported by an independent support 6, which is composed of a column 6-1, a vibration spring 6-2 and a clamp 6-3. The upper end of the vibration spring 6-2 is fixedly connected to the clamp 6-3, and the lower end is fixedly connected to the column 6-1; the clamp 6-3 firmly clamps the fixing part 1-1 on the side wall of the sieve body 1, so that the sieve body 1 can vibrate up and down on the vibration spring 6-2 under the action of the vibrator 4.

[0034] The clearing device includes a grid 7-1, a top rod 7-2, a connecting piece 7-3, a reciprocating part 7-4, a translation part 7-5, a square cover 1 7-6 and a square cover 2 7-7; the top rod 7-2 is a slender column, welded to the grid 7-1 and perpendicular to its plane. A clearing device is provided under each layer of screen. The grid 7-1 is arranged directly below the screen 3 and parallel to it; the connecting piece 7-3 passes through the side wall of the screen body 1, and the reciprocating part 7-4, the translation part 7-5, the square cover 1 7-6 and the square cover 2 7-7 are arranged on the outer side wall of the screen body 1.

[0035] The grid length of the grid frame is 2 to 5 times the grid length of the screen above it (the specific multiple can be determined according to the material of the grid frame to meet production needs); the grid width of the grid frame is twice the grid width of the screen above it.

[0036] Figure 2 A schematic diagram of the structure of the screen and the clearing device in the direction perpendicular to the screen surface is given. The grid length of the grid frame 7-1 (see the dotted grid) is three times the grid length of the screen 3 above it, and the grid width of the grid frame 7-1 is twice the grid width of the screen 3. Each row of top rods 7-2 on the grid frame 7-1 points to the grid center of the odd-numbered rows of the screen 3 (counting from the discharge port 3-1 to the hopper 2), and can be repeatedly raised and lowered with the grid frame 7-1 to pass through the grid center of the screen 3 to clear the blocked materials on the odd-numbered rows of the screen 3.

[0037] like Figure 3 , 4 As shown in Figures 5 and 6, the connecting member 7-3 is a T-shaped member, which is composed of a cross arm 7-31 and a column 7-32.

[0038] The reciprocating component 7-4 is composed of a square plate 7-41, an eccentric wheel 7-42, a front fixed plate 7-43, a rear fixed plate 7-44, a bearing 7-45, a motor 7-46 and a tail column 7-47.

[0039] One end of the cross arm 7-31 passes through the square hole 1-2 on the side wall of the screen body 1 from the outside and is fixedly connected to the grid 7-1, and the other end is placed on the eccentric wheel 7-42.

[0040] A groove 1-3 having a certain depth and parallel to the grid 7-1 is arranged on the side wall of the sieve body 1 below the square hole 1-2. The front end edge of the square plate 7-41 is inserted into the groove 1-3 and can slide smoothly in the groove 1-3.

[0041] A through slot 7-411 is provided in the middle of the square plate 7-41, and the through slot 7-411 is parallel to the front edge of the square plate 7-41; the front fixing plate 7-43 and the rear fixing plate 7-44 are fixedly provided on the square plate 7-41 across the through slot 7-411; the column 7-32 passes through the square plate 7-41, and a pin is installed in the end hole of the column 7-32 to prevent the column 7-32 from being separated from the square plate 7-41 when it reciprocates up and down. A tail column 7-47 is fixedly provided in the middle position of the rear end face of the square plate 7-41, and the tail column 7-47 is perpendicular to its rear end face.

[0042] The bearing 7-45 is installed in the through hole of the front fixing plate 7-43, the eccentric wheel 7-42 is placed between the front fixing plate 7-43 and the rear fixing plate 7-44, and the rotating shaft of the motor 7-46 passes through the rear fixing plate 7-44, the eccentric wheel 7-42 and the bearing 7-45 in sequence. The two ends of the spring 7-33 are respectively connected to the cross arm 7-31 and the square plate 7-41, so that the cross arm 7-31 is close to the eccentric wheel 7-42.

[0043] The translation component 7-5 is composed of a second motor 7-51, a square cover 7-6 and a toggle member 7-52. A second through slot 7-62 is arranged in the middle of the cover body of the square cover 7-6, and a through hole 1 7-61 is arranged in the middle below the second through slot 7-62. The toggle member 7-52 is in the shape of a long plate, and a second through hole 7-521 is arranged at one end thereof, and a third through slot 7-522 is arranged at the other end thereof.

[0044] The shaft of the second motor 7-51 passes through the through hole 1 7-61 and is fixed to the inner side of the square cover 1 7-6 by bolts. The through hole 2 7-521 of the toggle member 7-52 is sleeved on the shaft of the second motor 7-51; the through slot 2 7-62 of the square cover 1 7-6 and the through slot 3 7-522 of the toggle member 7-52 are sleeved on the tail column 7-47 of the square plate 7-41 in sequence, and the through slot 2 7-62 is parallel to the square plate 7-41; the square cover 1 7-6 is fixed to the outer side wall of the screen body 1 by bolts, and then the square cover 2 7-7 is fixed to the square cover 1 7-6 by bolts.

[0045] The square hole 1-2 on the side wall is blocked from the inner side of the screen body 1 by a soft seal 1-4 to prevent particulate material and dust from passing through the square hole 1-2 and damaging the clearing device; the soft seal 1-4 can allow the connector 7-3 to move freely.

[0046] During operation, the vibrator 4 is started to make the screen body 1 vibrate up and down on the vibration spring 6-2, and the material is added from the feeding hopper 2. The material smaller than the mesh size of the screen leaks to the next layer of the screen for further screening, and the material larger than the mesh size of the screen is discharged from the discharge port 3-1 at the end of the current layer of the screen; the fine material leaking from the bottom layer of the screen mesh is collected by the receiving hopper 5 and guided to fall onto the belt conveyor below the discharge port of the receiving hopper 5.

[0047] When the mesh of the screen is clogged, stop adding material and start the clearing device to clean it.

[0048] Start the motor 7-46, and its rotating shaft drives the eccentric wheel 7-42 to rotate. The rotating cam of the eccentric wheel 7-42 repeatedly lifts the connecting piece 7-3. After the connecting piece 7-3 reaches the highest point, it is pulled back to the lowest point by the spring 7-33. In this way, the connecting piece 7-3, the grid 7-1 and the push rod 7-2 make up-and-down reciprocating motions, and the push rod 7-2 continuously impacts the blockages on the grid. Under the joint action of the continuous impact and vibration of the push rod 7-2 and the vibrator 4, the blockages on the odd-numbered rows of the screen are cleared.

[0049] Turn off the motor 1 7-46, and the push rod 7-2 falls. Start the motor 2 7-51, and its shaft drives the toggle member 7-52 to rotate a certain angle, so that the toggle member 7-52 pushes the tail post 7-47 to slide to the other end of the through slot 2 7-62, and the tail post 7-47 drives the square plate 7-41, the connecting member 7-3 and the mesh frame 7-1 to move a short distance, and the push rod 7-2 is just aligned with the center of the grid of the even-numbered rows of the screen. Turn off the motor 2 7-51, and start the motor 1 7-46 again to clear the blockage on the grid of the even-numbered rows of the screen.

[0050] After cleaning, turn off motor 1 7-46, and reverse the rotation of motor 2 7-51 so that the toggle member 7-52 pushes the tail post 7-47 to the initial position.

[0051] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A waste asphalt mixture screening device, characterized in that: It is composed of a screen body (1), a feeding hopper (2), a screen (3), a vibrator (4), a receiving hopper (5), a support (6) and a blockage clearing device; The feeding hopper (2) is arranged on the top of the screen body (1); the screen (3) is arranged obliquely inside the screen body (1), and a discharge port (3-1) is arranged at the end of the screen (3); the vibrator (4) is installed on the side wall of the screen body (1); The receiving hopper (5) is arranged below the sieve body (1) and is supported by an independent bracket; the receiving opening at the upper part of the receiving hopper (5) is connected to the bottom of the sieve body (1), and the discharge opening at the lower part of the receiving hopper (5) is in the shape of an elongated slit; the receiving hopper (5) has no contact with the sieve body (1), and the gap between the receiving hopper (5) and the sieve body (1) is sealed by a soft connection; The sieve body (1) is supported by an independent support (6), the support (6) being composed of a column (6-1), a vibration spring (6-2) and a clamp (6-3); the upper end of the vibration spring (6-2) is fixedly connected to the clamp (6-3), and the lower end is fixedly connected to the column (6-1); the clamp (6-3) firmly clamps the fixing part (1-1) on the side wall of the sieve body (1); The blockage clearing device comprises a grid frame (7-1), a top rod (7-2), a connecting piece (7-3), a reciprocating component (7-4), a translation component (7-5), a square cover 1 (7-6) and a square cover 2 (7-7); the top rod (7-2) is in the shape of a slender column, welded to the grid frame (7-1) and perpendicular to the plane thereof; the grid frame (7-1) is arranged directly below the screen mesh (3) and parallel thereto; the connecting piece (7-3) passes through the side wall of the screen body (1); the reciprocating component (7-4), the translation component (7-5), the square cover 1 (7-6) and the square cover 2 (7-7) are arranged on the outer side wall of the screen body (1); The connecting piece (7-3) is a T-shaped piece, consisting of a cross arm (7-31) and a column (7-32); The reciprocating component (7-4) is composed of a square plate (7-41), an eccentric wheel (7-42), a front fixed plate (7-43), a rear fixed plate (7-44), a bearing (7-45), a motor (7-46) and a tail column (7-47); One end of the cross arm (7-31) passes through the square hole (1-2) on the side wall of the screen body (1) from the outside and is fixedly connected to the grid frame (7-1), and the other end is placed on the eccentric wheel (7-42); A groove (1-3) having a certain depth and parallel to the grid frame (7-1) is provided on the side wall of the sieve body (1) below the square hole (1-2); the front end edge of the square plate (7-41) is inserted into the groove (1-3) and can slide smoothly in the groove (1-3); A through slot (7-411) is provided in the middle of the square plate (7-41), and the through slot (7-411) is parallel to the front end edge of the square plate (7-41); the front fixing plate (7-43) and the rear fixing plate (7-44) are fixedly provided on the square plate (7-41) via the through slot (7-411); the upright post (7-32) passes through the square plate (7-41), and a pin is installed in the end hole of the upright post (7-32); a tail post (7-47) is fixedly provided in the middle position of the rear end surface of the square plate (7-41), and the tail post (7-47) is perpendicular to the rear end surface thereof; The bearing (7-45) is installed in the through hole of the front fixing plate (7-43); the eccentric wheel (7-42) is placed between the front fixing plate (7-43) and the rear fixing plate (7-44); the rotating shaft of the motor 1 (7-46) passes through the rear fixing plate (7-44), the eccentric wheel (7-42) and the bearing (7-45) in sequence; the two ends of the spring (7-33) are respectively connected to the cross arm (7-31) and the square plate (7-41), so that the cross arm (7-31) is in close contact with the eccentric wheel (7-42); The translation component (7-5) is composed of a second motor (7-51), a first square cover (7-6) and a toggle member (7-52); the second through slot (7-62) is arranged at the middle position of the cover body of the first square cover (7-6), and the first through hole (7-61) is arranged at the middle position below the second through slot (7-62); the toggle member (7-52) is in the shape of a long plate, one end of which is provided with the second through hole (7-521), and the other end of which is provided with the third through slot (7-522); The rotating shaft of the second motor (7-51) passes through the first through hole (7-61) and is fixed to the inner side of the first square cover (7-6) by bolts; the second through hole (7-521) of the toggle member (7-52) is sleeved on the rotating shaft of the second motor (7-51); the second through slot (7-62) of the first square cover (7-6) and the third through slot (7-522) of the toggle member (7-52) are sleeved on the tail column (7-47) of the square plate (7-41) in sequence, and the second through slot (7-62) is parallel to the square plate (7-41); the first square cover (7-6) is fixed to the outer wall of the screen body (1) by bolts, and the second square cover (7-7) is fixed to the first square cover (7-6) by bolts; The square holes (1-2) on the side wall of the sieve body (1) are sealed from the inside by a soft seal (1-4).

2. The waste asphalt mixture screening device according to claim 1 is characterized in that: The mesh length of the mesh frame (7-1) is 2 to 5 times the mesh length of the screen (3) above it; and the mesh width of the mesh frame (7-1) is twice the mesh width of the screen (3) above it.

3. The waste asphalt mixture screening device according to claim 1 is characterized in that: The sieve (3) is provided in 2 to 4 layers.

4. The waste asphalt mixture screening device according to claim 1 is characterized in that: The inclination angle of the screen (3) is 17° to 23°.

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