Asphalt concrete production screening device

Abstract

The utility model relates to the technical field of concrete production, and discloses an asphalt concrete production screening device which comprises a machine frame, a screening device, a screening device, a screening device and a screening device. The top of the machine frame is fixedly connected with a conveying hopper, and a discharging port is formed in one side of the bottom end of the conveying hopper. The support is fixedly connected to the rack and located on the side away from the discharging opening, and the top end of the support extends upwards in the vertical direction; the hopper is arranged at the top of the support, a first sieve plate is fixedly connected in the hopper, a scraper is in sliding contact with the top surface of the first sieve plate, a first driving part is arranged on the hopper, and the driving end of the first driving part is connected with the scraper so that the scraper can rotate around the hopper in the circumferential direction; the second driving piece is arranged on the support, and the driving end of the second driving piece is connected with the hopper so that the hopper can turn over relative to the support; and the second sieve plate is arranged between the hopper and the conveying hopper, the second sieve plate is obliquely arranged, the high end of the second sieve plate is located below the hopper, and the low end of the second sieve plate communicates with a storage box. The screening efficiency can be improved, and the effect of tiling and screening the aggregate is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete production technology, and in particular to a screening device for asphalt concrete production. Background Technology

[0002] In the production and preparation of asphalt concrete, the aggregates (i.e., sand, gravel, mineral powder, etc.) need to be screened first to separate different grades of aggregates, so as to facilitate the subsequent mixing and preparation of asphalt concrete of the corresponding specifications. Screening devices are required during the screening process.

[0003] In existing technologies, such as the vibrating screening device for asphalt concrete production (patent number CN218251395U), a guide plate is installed inside the hopper, and the guide plate is driven to reciprocate by a rack and gear to achieve material spreading and improve screening efficiency. However, because the guide plate can only swing left and right, and its adjustment is based on the distance between the two sides of the guide plate and the inner wall of the hopper, if the distance between the guide plate and the inner wall of the hopper is too small, aggregate jamming can easily occur. In addition, the guide plate swings left and right while the gear is connected in the middle, so the guide plate can only guide the aggregate to the two sides of the screen, which can also cause material accumulation on the sides of the screen. Therefore, the existing technology has certain defects. This patent proposes an asphalt concrete production screening device to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a screening device for asphalt concrete production, so as to solve the problems existing in the prior art and improve screening efficiency and the effect of aggregate flat screening.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides an asphalt concrete production screening device, comprising:

[0006] The frame has a conveyor bucket fixed to the top, and a discharge port is opened on one side of the bottom end of the conveyor bucket.

[0007] A bracket is fixed to the frame and located on the side away from the discharge port, with the top of the bracket extending vertically upward.

[0008] A hopper is disposed on the top of the support. A first screen plate is fixedly connected inside the hopper. A scraper slides in contact with the top surface of the first screen plate. A first driving member is disposed on the hopper. The driving end of the first driving member is connected to the scraper so that the scraper rotates around the circumference of the hopper.

[0009] A second driving member is disposed on the bracket, and the driving end of the second driving member is connected to the hopper so that the hopper is rotated relative to the bracket.

[0010] A second screen plate is disposed between the hopper and the conveying hopper. The second screen plate is arranged at an inclination, with its high end located below the hopper and its low end connected to a storage box.

[0011] Preferably, the first driving element includes:

[0012] A first motor plate is fixedly connected to one side of the hopper, and a first drive motor is fixedly connected to the first motor plate.

[0013] The drive gear is fixedly connected to the output shaft of the first drive motor. The top of the hopper is rotatably connected to a collar via a bearing. Gear teeth are fixedly connected to the outer ring of the collar. The drive gear meshes with the gear teeth. The scraper is fixedly connected to the inner ring of the collar.

[0014] Preferably, the scraper has an L-shaped structure, and a plurality of scrapers are provided. The short sides of the plurality of scrapers are circumferentially fixed to the inner ring side of the collar at equal intervals. The long sides of the scrapers slide in contact with the top surface of the first screen plate and extend along the center of the top surface of the first screen plate.

[0015] Preferably, the second driving element includes:

[0016] A retaining ring is fitted and fixed to the outer periphery of the hopper. A second motor plate is fixed to the opposite side of the top of the bracket. A second drive motor is fixed to the second motor plate. The output shaft of the second drive motor is fixed to a rotating rod through a reduction gearbox. The rotating rod is fixed to the retaining ring, and the two rotating rods arranged opposite each other are coaxially distributed.

[0017] Preferably, the top of the hopper extends vertically upward and has a feed inlet, and the bottom of the hopper has an opening, the projection of which in the vertical direction is located on the high end of the second screen plate.

[0018] Preferably, the diameter of the sieve holes on the second sieve plate is smaller than the diameter of the sieve holes on the first sieve plate.

[0019] Preferably, the lower end of the second screen plate is hinged to the frame, the upper end of the second screen plate is fixed to the frame by a support rod, and a first vibration motor is fixedly connected to one side of the second screen plate.

[0020] Preferably, a conveyor belt is provided below the discharge port, and a second vibration motor is fixedly connected to the bottom surface of the conveying hopper.

[0021] The present invention discloses the following technical effects:

[0022] This invention uses a first screen plate fixed inside the hopper to screen aggregates. A first driving component drives a scraper to slide against the first screen plate, improving screening efficiency and effectively spreading the aggregates evenly on a second screen plate, accelerating further screening. The second driving component drives the hopper to rotate relative to the support, allowing a large amount of screened aggregate to accumulate in the first screen plate before large particles are quickly discharged. Furthermore, the first screen plate screens out unusable or incompletely crushed aggregates. The second screen plate separates usable aggregates into coarse and fine aggregates. By tilting the second screen plate and connecting its lower end directly to a storage box, coarse aggregates are collected in the storage box, while fine aggregates falling from the second screen plate can be collected and transported via a conveyor bucket, enhancing the practicality of screening asphalt concrete aggregates. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a diagram showing the positional relationship between the hopper and the second sieve plate in this utility model;

[0025] Figure 2 This is a diagram showing the positional relationship between the scraper and the first sieve plate in this utility model;

[0026] Figure 3 This is a diagram showing the connection relationship between the collar and the scraper in this utility model;

[0027] Figure 4 This is a diagram showing the positional relationship between the first and second vibration motors in this utility model.

[0028] Figure 5 This is a diagram showing the connection relationship between the first drive motor and the collar in this utility model;

[0029] The components are as follows: 1. Frame; 2. Conveying hopper; 3. Support; 4. Hopper; 5. First screen plate; 6. Scraper; 7. Second screen plate; 8. Storage box; 9. First motor plate; 10. First drive motor; 11. Drive gear; 12. Collar; 13. Gear tooth; 14. Snap ring; 15. Second motor plate; 16. Second drive motor; 17. Reduction gearbox; 18. Rotating rod; 19. Support rod; 20. Positioning pin; 21. Conveyor belt; 22. First vibrating motor; 23. Second vibrating motor. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Reference Figures 1-5 This utility model provides a screening device for asphalt concrete production, comprising:

[0033] The frame 1 has a conveyor bucket 2 fixedly connected to the top, and the conveyor bucket 2 has a discharge port on one side of its bottom end;

[0034] The bracket 3 is fixed to the frame 1 and located on the side away from the discharge port. The top of the bracket 3 extends vertically upward.

[0035] The hopper 4 is set on the top of the support 3. A first screen plate 5 is fixedly connected inside the hopper 4. A scraper 6 is slidably contacted on the top surface of the first screen plate 5. A first driving member is set on the hopper 4. The driving end of the first driving member is connected to the scraper 6 so that the scraper 6 can rotate around the hopper 4.

[0036] The second driving component is mounted on the support 3, and the driving end of the second driving component is connected to the hopper 4 so that the hopper 4 can be rotated relative to the support 3.

[0037] The second screen plate 7 is set between the hopper 4 and the conveying hopper 2. The second screen plate 7 is arranged at an angle, and the high end of the second screen plate 7 is located below the hopper 4. The low end of the second screen plate 7 is connected to a storage box 8.

[0038] This invention uses a first screen plate 5 fixed inside the hopper 4 to screen aggregates. A first driving component drives a scraper 6 to slide against the first screen plate 5, thereby improving screening efficiency and effectively spreading the aggregates evenly on the second screen plate 7, accelerating the screening efficiency of the second screen plate 7. The second driving component drives the hopper 4 to rotate relative to the support 3, allowing a large amount of screened aggregate to accumulate in the first screen plate 5, after which large particles of aggregate can be quickly discharged. In addition, due to the screening by the first screen plate 5, some unusable or incompletely crushed aggregates are screened out. The second screen plate 7 performs screening between coarse and fine aggregates of usable aggregates. Therefore, by tilting the second screen plate 7 and directly connecting its lower end to the storage box 8, the coarse aggregate is collected in the storage box 8, while the fine aggregates falling from the second screen plate 7 can be collected and transported through the conveyor hopper 2, enhancing the practicality of screening aggregates for asphalt concrete.

[0039] Furthermore, the first driving component includes:

[0040] The first motor plate 9 is fixedly connected to one side of the hopper 4, and the first drive motor 10 is fixedly connected to the first motor plate 9.

[0041] The drive gear 11 is fixed to the output shaft of the first drive motor 10. The top of the hopper 4 is connected to the collar 12 via a bearing. The outer ring of the collar 12 is fixed to the gear teeth 13. The drive gear 11 meshes with the gear teeth 13. The scraper 6 is fixed to the inner ring of the collar 12.

[0042] The first drive motor 10 drives the drive gear 11 to rotate, and the drive gear 11 rotates the gear teeth 13, which in turn drives the collar 12 to rotate. The collar 12 rotates the scraper 6, which slides against the top surface of the first screen plate 5 to spread the aggregate evenly and improve the screening efficiency of the first screen plate 5, thus preventing the aggregate from getting stuck on the first screen plate 5.

[0043] Furthermore, the scraper 6 has an L-shaped structure, and several scrapers 6 are provided. The short sides of the scrapers 6 are fixedly connected to the inner ring side of the collar 12 at equal intervals. The long sides of the scrapers 6 slide in contact with the top surface of the first screen plate 5 and extend along the center of the top surface of the first screen plate 5.

[0044] The efficiency of spreading aggregate is improved by using several scrapers 6. The L-shaped structure of the scrapers 6 allows them to extend into the hopper 4, ensuring sliding contact with the top surface of the first screen plate 5.

[0045] Furthermore, the second drive component includes:

[0046] A retaining ring 14 is sleeved and fixed to the outer periphery of the hopper 4. A second motor plate 15 is fixed to the opposite side of the top of the bracket 3. A second drive motor 16 is fixed to the second motor plate 15. The output shaft of the second drive motor 16 is fixed to a rotating rod 18 through a reduction gearbox 17. The rotating rod 18 is fixed to the retaining ring 14, and the two rotating rods 18 arranged opposite to each other are coaxially distributed.

[0047] The second drive motor 16 drives the rotating rod 18 to rotate, and the rotating rod 18 is fixedly connected to the hopper 4, thereby realizing the flipping of the hopper 4 to pour out the unusable large particles of aggregate that have been screened from the top of the hopper 4.

[0048] In this technical solution, the reduction gearbox 17 adopts a self-locking reduction mechanism to ensure the connection stability between the hopper 4 and the support 3 when the hopper 4 is not rotating, and to prevent the hopper 4 from deflecting.

[0049] Furthermore, the top of the hopper 4 extends vertically upward and has a feed inlet, and the bottom of the hopper 4 has an opening, the projection of which along the vertical direction is located on the high end of the second screen plate 7.

[0050] By extending the top of the hopper 4 vertically, when the hopper 4 is tilted, the top of the hopper 4 can extend away from the second screen plate 7, thus preventing waste from being dumped onto the second screen plate 7. The opening at the bottom of the hopper 4 is located above the high end of the second screen plate 7, so after passing through the first screen plate 5, it can fall directly onto the second screen plate 7 for sieving.

[0051] Furthermore, the diameter of the sieve holes on the second sieve plate 7 is smaller than that on the first sieve plate 5. This ensures multi-stage sorting of the aggregates, meaning that the aggregates after passing through the first sieve plate 5 are a mixture of coarse and fine aggregates, and after passing through the second sieve plate 7, a separation between fine and coarse aggregates is achieved.

[0052] Furthermore, the lower end of the second screen plate 7 is hinged to the frame 1, the upper end of the second screen plate 7 is fixed to the frame 1 via a support rod 19, and a first vibration motor 22 is fixedly connected to one side of the second screen plate 7.

[0053] The first vibrating motor 22 drives the second screen plate 7 to vibrate and pass through the screen, thereby causing the aggregate to move along the inclined direction of the second screen plate 7. The coarse aggregate that has not passed through the screen is passed into the storage box 8, while the fine aggregate falls into the conveying hopper 2.

[0054] In one embodiment of this technical solution, the support rod 19 is slidably connected to the frame 1, and several positioning holes are opened on the second screen plate 7. Positioning pins 20 are inserted into the positioning holes. The positioning pins 20 pass through the support rod 19 to fix it to the second screen plate 7. At the same time, the tilt angle of the second screen plate 7 relative to the frame 1 is adjusted according to the change of the fixed position of the support rod 19.

[0055] Furthermore, a conveyor belt 21 is installed below the discharge port, and a second vibrating motor 23 is fixedly connected to the bottom surface of the conveyor bucket 2.

[0056] The fine aggregate exiting the conveyor hopper 2 is transported by the conveyor belt 21, thereby improving the screening efficiency.

[0057] The working principle of this utility model asphalt concrete production screening device is as follows:

[0058] Aggregate is fed into hopper 4, and the first drive motor 10 is started. The first drive motor 10 rotates the collar 12, thereby driving several scrapers 6 to rotate circumferentially to screen the aggregate. The aggregate passing through the first screen plate 5 falls onto the second screen plate 7. The first vibration motor 22 is started, and the second screen plate 7 vibrates to screen the aggregate, so that the fine aggregate falls into the conveyor hopper 2. Under the action of the second vibration motor 23, the fine aggregate moves along the inclined inner wall of the conveyor hopper 2 and passes through the discharge port onto the conveyor belt 21. The coarse aggregate is screened out on the top surface of the second screen plate 7 and finally passes through the lower end of the second screen plate 7 into the storage box 8 along the inclined angle of the second screen plate 7. In addition, the unusable or incompletely crushed aggregate is screened out by the first screen plate 5 and driven by the second drive motor 16 to rotate the hopper 4 and discharge it in a direction away from the second screen plate 7, thus completing the grading, screening and conveying of the aggregate.

[0059] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0060] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An asphalt concrete production screening apparatus, characterized in that, Include: Frame (1), the top is fixed with conveying hopper (2), the bottom end side of conveying hopper (2) is provided with discharge gate; Support (3), fixed on the frame (1) and located away from the discharge gate side, the top end of the support (3) extends vertically upwards; Hopper (4) is arranged on the top of the support (3), the first sieve plate (5) is fixed in the hopper (4), the top surface of the first sieve plate (5) is in sliding contact with the scraper (6), the first driving member is arranged on the hopper (4), the driving end of the first driving member is connected with the scraper (6), so that the scraper (6) rotates around the hopper (4); Second driving member, arranged on the support (3), the driving end of the second driving member is connected with the hopper (4), so that the hopper (4) is turned over relative to the support (3); Second sieve plate (7) is arranged between the hopper (4) and the conveying hopper (2), the second sieve plate (7) is arranged obliquely, and the high end of the second sieve plate (7) is located below the hopper (4), and the low end of the second sieve plate (7) is communicated with the storage box (8).

2. The asphalt concrete production screening apparatus of claim 1, wherein, The first driving member includes: First motor plate (9), fixed on one side of the hopper (4), the first driving motor (10) is fixed on the first motor plate (9); Driving gear (11), fixed on the output shaft of the first driving motor (10), the top end of the hopper (4) is connected with the sleeve ring (12) through the bearing, the outer ring side of the sleeve ring (12) is fixed with the gear teeth (13), the driving gear (11) is engaged with the gear teeth (13), and the scraper (6) is fixed on the inner ring side of the sleeve ring (12).

3. The asphalt concrete production screening apparatus of claim 2, wherein: The scraper (6) is L-shaped structure, a plurality of scrapers (6) are arranged, the short side of the plurality of scrapers (6) is fixed on the inner ring side of the sleeve ring (12) at equal intervals, and the long side of the scraper (6) is in sliding contact with the top surface of the first sieve plate (5) and extends along the center of the top surface of the first sieve plate (5).

4. The asphalt concrete production screening apparatus of claim 1, wherein, The second driving member includes: Snap ring (14), the sleeve ring (14) is fixed on the outer circumferential side of the hopper (4), the top end of the support (3) is respectively fixed with the second motor plate (15) on the opposite side, the second driving motor (16) is fixed on the second motor plate (15), the output shaft of the second driving motor (16) is connected with the rotating rod (18) through the speed reducer gear box (17), the rotating rod (18) is fixed with the snap ring (14), and the two rotating rods (18) are coaxially distributed.

5. The asphalt concrete production screening apparatus of claim 1, wherein: The top end of the hopper (4) extends vertically upwards and is provided with a feeding port, and the bottom end of the hopper (4) is provided with an opening, and the projection of the opening in the vertical direction is located on the high end of the second sieve plate (7).

6. The asphalt concrete production screening apparatus of claim 1, wherein: The diameter of the sieve hole on the second sieve plate (7) is smaller than that of the sieve hole on the first sieve plate (5).

7. The asphalt concrete production screening apparatus of claim 1, wherein: The low end of the second sieve plate (7) is hinged with the frame (1), the high end of the second sieve plate (7) is fixed with the frame (1) through the support rod (19), and the first vibration motor (22) is fixed on one side of the second sieve plate (7).

8. The asphalt concrete production screening apparatus of claim 1, wherein: A conveying belt (21) is arranged below the discharge port, and a second vibrating motor (23) is fixed to the bottom surface of the conveying hopper (2).

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