CN215507771U - Powder screening plant for asphalt concrete mixing plant - Google Patents

Abstract

Bituminous concrete is powder screening plant for stirring station, including the sieve case, sieve roof portion intercommunication be equipped with the feed inlet, the fixed block that is equipped with the symmetry of sieve incasement chamber left and right sides end wall department, the contact of fixed block top be equipped with the screening board, the fixed kicking block that is equipped with in sieve incasement chamber top, the kicking block in link up and be equipped with hourglass silo, the kicking block lower surface with screening board upper surface between fixedly connected with vibrating spring. According to the utility model, through the power drive of the double-shaft motor and the reset action of the vibration spring, the reciprocating cam drives the vibration rod to rapidly reciprocate in the vertical direction through the vibration block, so that the screening plate is driven to rapidly reciprocate in the vertical direction, the waste asphalt is subjected to vibration screening, the problem of screen surface blockage caused by accumulation of waste asphalt blocks can be effectively avoided, and the screening efficiency is improved.

Description

Powder screening plant for asphalt concrete mixing plant

Technical Field

The utility model relates to the technical field of asphalt recycling, in particular to a powder screening device for an asphalt concrete mixing plant.

Background

At present, in asphalt regeneration, an old asphalt pavement regeneration technology which is widely, flexibly and simply used and can ensure the quality is to use a milling machine to mill and recycle the old asphalt pavement and transport the old asphalt pavement back to a mixing plant, and as the waste asphalt particles in primary screening are large, the waste asphalt particles cannot pass through the screen quickly, so that part of the waste asphalt particles is accumulated on the screen surface, and the screen surface is easy to block. Present chinese patent number is zl201721514834.x, the patent name is a novel old and useless pitch screening plant, a novel old and useless pitch screening plant is disclosed, its beneficial effect is through setting up the cushion, can increase the frictional force of bottom plate bottom, prevent that the bottom plate from removing, through setting up guide bar and guide way, can increase the stability that the movable plate removed, the slope when preventing that the movable plate from removing, through setting up the shock pad, can reduce the vibrations of motor, the life of motor has been prolonged, through setting up the handle, can the person of facilitating the use open the apron, the practicality of apron is increased. It also has the following disadvantages: waste asphalt blocks are easy to accumulate to cause screen blockage, and once the screen surface is accumulated, the screen penetration rate is smaller, so that the screening efficiency is low.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: in order to overcome the problems existing in the prior art, the powder screening device for the asphalt concrete mixing plant is provided, and the problems that a screen is blocked due to the fact that waste asphalt blocks are easy to stack and the screening efficiency is low due to the fact that once a screen surface is stacked are solved.

The technical problem to be solved by the utility model is realized by adopting the following technical scheme:

the powder screening device for the asphalt concrete mixing station comprises a screen box, wherein the top of the screen box is communicated with a feed inlet, symmetrical fixed blocks are fixedly arranged at the left end wall and the right end wall of an inner cavity of the screen box, a screening plate is arranged at the top of the fixed blocks in a contact manner, a top block is fixedly arranged at the top of the inner cavity of the screen box, a material leaking groove is formed in the top block in a through manner, a vibrating spring is fixedly connected between the lower surface of the top block and the upper surface of the screening plate, a material blocking barrel extending upwards is fixedly arranged at the top of the screening plate, the cross section of the material blocking barrel is shaped like a Chinese character 'hui', a plurality of screen holes are formed in the screening plate in a through manner, a funnel-shaped material collecting hopper is arranged below the screening plate, a discharge pipe is communicated with the bottom of the material collecting hopper, a vibrating rod can be arranged in the fixed block in a vertical sliding manner, the top end of the vibrating rod is fixedly connected with the bottom end of the screening plate, vibrations pole bottom follow fixed block bottom stretch out and fixedly connected with vibrations piece, vibrations piece in be equipped with the butt groove, sieve incasement chamber bottom center fixed be equipped with the power piece, the power piece internal fixation be equipped with the double-shaft motor, the equal power connection in double-shaft motor both ends have the power shaft that the level set up, power shaft other end fixedly connected with reciprocating cam, reciprocating cam outer wall with the inner wall in butt groove offset.

Furthermore, the number of the vibration springs is four, and the vibration springs are uniformly distributed at four corners of the top of the screening plate.

Furthermore, the sieve pores are distributed in a rectangular array, and the distribution area of the sieve pores is positioned on the inner side of the material blocking cylinder.

Furthermore, an embedded groove with a downward opening is formed in the ejector block, the embedded groove is located on the outer side of the material leakage groove, and the top of the material blocking barrel is embedded into the embedded groove.

Furthermore, the side wall of the material blocking cylinder is in sliding connection with the end wall of the embedded groove.

Furthermore, the discharge pipe is obliquely arranged towards the front side of the bottom of the screen box, and one oblique end of the discharge pipe penetrates through the front side wall body of the screen box.

Furthermore, the screening plate is aligned with the center of the collecting hopper, and the area of the area where the screening holes are distributed is smaller than the area of the top opening of the collecting hopper.

The utility model has the advantages and positive effects that:

according to the utility model, through the power drive of the double-shaft motor and the reset action of the vibration spring, the reciprocating cam drives the vibration rod to rapidly reciprocate in the vertical direction through the vibration block, so that the screening plate is driven to rapidly reciprocate in the vertical direction, the waste asphalt is subjected to vibration screening, the problem of screen surface blockage caused by accumulation of waste asphalt blocks can be effectively avoided, and the screening efficiency is improved.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic cross-sectional structural view of the present invention;

FIG. 2 is a schematic view of the connecting structure of the reciprocating cam and the vibrating block in the present invention;

FIG. 3 is a schematic view showing a connection structure of a collecting hopper and a discharging pipe in the present invention.

The scores in the figures are as follows: 10. a screen box; 11. a feed inlet; 12. a groove is embedded; 13. a top block; 14. a material blocking barrel; 15. vibrating the spring; 16. a screening plate; 17. a collection hopper; 18. a discharge pipe; 19. a power block; 20. a double-shaft motor; 21. a power shaft; 22. a reciprocating cam; 23. a vibration block; 24. a vibration rod; 25. a fixed block; 26. screening holes; 27. a butt joint groove; 28. and a material leaking groove.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

The embodiments of the utility model will be described in further detail below with reference to the accompanying drawings:

as shown in fig. 1, 2 and 3, the powder screening device for asphalt concrete mixing plants of the present invention comprises a screen box 10, wherein the top of the screen box 10 is communicated with a feed inlet 11, symmetrical fixed blocks 25 are fixedly arranged at the left and right end walls of the inner cavity of the screen box 10, a screening plate 16 is arranged at the top of the fixed blocks 25 in contact with each other, a top block 13 is fixedly arranged at the top of the inner cavity of the screen box 10, a material leaking groove 28 is arranged in the top block 13 in a penetrating manner, a vibration spring 15 is fixedly connected between the lower surface of the top block 13 and the upper surface of the screening plate 16, a material blocking cylinder 14 extending upwards is fixedly arranged at the top of the screening plate 16, the cross section of the material blocking cylinder 14 is shaped like a Chinese character 'hui', a plurality of screen holes 26 are arranged in the screening plate 16 in a penetrating manner, a funnel-shaped material collecting hopper 17 is arranged below the screening plate 16, a material discharging pipe 18 is arranged at the bottom of the material collecting hopper 17 in a communicating manner, fixed block 25 in can slide from top to bottom and be equipped with vibrations pole 24, vibrations pole 24 top with screening board 16 bottom fixed connection, vibrations pole 24 bottom follow fixed block 25 bottom stretch out and fixedly connected with vibrations piece 23, vibrations piece 23 in be equipped with butt groove 27, sieve case 10 inner chamber bottom center fixed be equipped with power block 19, power block 19 internal fixation be equipped with double-shaft motor 20, the equal power connection in double-shaft motor 20 both ends have the power shaft 21 of level setting, power shaft 21 other end fixedly connected with reciprocal cam 22, reciprocal cam 22 outer wall with the inner wall of butt groove 27 offset.

In one embodiment, the number of the vibrating springs 15 is four, and the vibrating springs are uniformly distributed at four corners of the top of the sieving plate 16, so that sieving can be smoothly performed.

In one embodiment, the screen holes 26 are distributed in a rectangular array, and the distribution area is located inside the material blocking cylinder 14, so that the asphalt blocks can be effectively prevented from splashing in the screening process.

In an embodiment, an embedded groove 12 with a downward opening is formed in the top block 13, the embedded groove 12 is located outside the material leakage groove 28, the top of the material blocking cylinder 14 is embedded into the embedded groove 12, so that asphalt blocks can be prevented from entering the device, and the normal operation of the device is ensured.

In one embodiment, the side wall of the dam cylinder 14 is slidably connected with the end wall of the embedding groove 12, so that the dam cylinder 14 can perform rapid reciprocating motion along with the screening plate 16.

In one embodiment, the discharge pipe 18 is disposed to be inclined toward the front side of the bottom of the screen box 10, and one inclined end of the discharge pipe penetrates through the front sidewall of the screen box 10, so that the asphalt blocks after being screened are automatically dropped into the screen box to be stirred.

In one embodiment, the screen plate 16 is aligned with the center of the collection hopper 17, and the area of the screen holes 26 is smaller than the area of the top opening of the collection hopper 17, so that the screened qualified asphalt blocks can fall into the collection hopper 17 completely.

During specific implementation, add old and useless pitch piece to sieve case 10 in through feed inlet 11, the powder falls into the screening board 16 upper surface through hourglass silo 28 because of the action of gravity, meanwhile, double-shaft motor 20 starts, double-shaft motor 20 passes through power shaft 21 drive reciprocating cam 22 and rotates, in addition, the reset action of vibrations spring 15, reciprocating cam 22 accessible vibrations piece 23 drive vibrations pole 24 carries out quick reciprocating motion in vertical direction, thereby drive screening board 16 and carry out quick reciprocating motion in vertical direction, thereby carry out vibration screening to old and useless pitch, can effectively avoid old and useless pitch piece to pile up the problem that causes the sifter to block up, thereby improve screening efficiency, the qualified powder of screening falls into collection hopper 17 through sieve mesh 26, then carry through discharging pipe 18 and stir the operation to stirring station in.

It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but other embodiments derived from the technical solutions of the present invention by those skilled in the art are also within the scope of the present invention.

Claims (7)

1. Bituminous concrete is powder screening plant for stirring station, including sieve case (10), sieve case (10) top intercommunication be equipped with feed inlet (11), sieve case (10) inner chamber about the fixed block (25) that are equipped with the symmetry of end wall department, its characterized in that: fixed block (25) top contact be equipped with screening board (16), sieve case (10) inner chamber top fixed be equipped with kicking block (13), kicking block (13) in link up and be equipped with hourglass silo (28), kicking block (13) lower surface with screening board (16) upper surface between fixedly connected with vibrating spring (15), screening board (16) top fixed be equipped with the fender feed cylinder (14) that upwards extends, the cross section that keeps off feed cylinder (14) be back the style of calligraphy, screening board (16) in link up and be equipped with a plurality of sieve mesh (26), screening board (16) below be equipped with hopper-shaped collection hopper (17), collection hopper (17) bottom intercommunication be equipped with discharging pipe (18), fixed block (25) in can the up-and-down slip be equipped with vibrations pole (24), vibrations pole (24) top with screening board (16) bottom fixed connection, vibrations pole (24) bottom follow fixed block (25) bottom stretch out and fixedly connected with vibrations piece (23), vibrations piece (23) in be equipped with butt groove (27), sieve case (10) inner chamber bottom center fixed be equipped with power piece (19), power piece (19) internal fixation be equipped with double-shaft motor (20), double-shaft motor (20) both ends equal power be connected with power shaft (21) that the level set up, power shaft (21) other end fixedly connected with reciprocal cam (22), reciprocal cam (22) outer wall with the inner wall of butt groove (27) offset.

2. The powder screening device for the asphalt concrete mixing station according to claim 1, which is characterized in that: the number of the vibrating springs (15) is four, and the vibrating springs are uniformly distributed at four corners of the top of the screening plate (16).

3. The powder screening device for the asphalt concrete mixing station according to claim 1, which is characterized in that: the sieve holes (26) are distributed in a rectangular array, and the distribution area is positioned on the inner side of the material blocking cylinder (14).

4. The powder screening device for the asphalt concrete mixing station according to claim 1, which is characterized in that: the material leakage device is characterized in that an embedded groove (12) with a downward opening is formed in the ejector block (13), the embedded groove (12) is located on the outer side of the material leakage groove (28), and the top of the material blocking barrel (14) is embedded into the embedded groove (12).

5. The powder screening device for the asphalt concrete mixing station according to claim 4, wherein: the side wall of the material blocking barrel (14) is in sliding connection with the end wall of the embedded groove (12).

6. The powder screening device for the asphalt concrete mixing station according to claim 1, which is characterized in that: the discharge pipe (18) is obliquely arranged towards the front side of the bottom of the screen box (10), and one oblique end of the discharge pipe penetrates through the front side wall body of the screen box (10).

7. The powder screening device for the asphalt concrete mixing station according to claim 1, which is characterized in that: the screening plate (16) is aligned with the center of the collecting hopper (17), and the area of the distribution area of the screening holes (26) is smaller than the area of the top opening of the collecting hopper (17).

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