Gravel drying equipment with dust removal function for asphalt concrete production

Abstract

The utility model provides gravel drying equipment with a dust removal function for asphalt concrete production, and relates to the technical field of concrete production, the gravel drying equipment comprises a drying cylinder, a feed port and a discharge pipe, the feed port and the discharge pipe are positioned on two sides of the drying cylinder, a heat supply cylinder is arranged on one side of the feed port, and a dust collection box is arranged on one side of the drying cylinder; a second dust suction hood and a first dust suction hood are respectively arranged at the tops of the feeding hole and the discharging pipe; a dust suction pump is arranged at the top of the dust collection box; suction force is generated in the second dust suction cover and the first dust suction cover by starting the dust suction pump, so that dust generated at the inlet and outlet position of the drying cylinder is sucked and input to one side of the guide hopper in the inner cavity of the dust collection box, the dust generated in the drying process is prevented from being diffused through the positions of the feeding port and the discharging port, and the dust removal quality is improved; and dust in the gas is collected through a dust collection bag in the input dust collection box, so that centralized treatment of the dust is facilitated, and the use effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete production technology, and in particular to a sand and gravel drying device for asphalt concrete production with dust removal function. Background Technology

[0002] In the production of asphalt concrete, the drying of sand and gravel raw materials is an extremely important step. High-quality drying operations can effectively remove moisture from the sand and gravel, ensuring good adhesion between the asphalt and the sand and gravel, thereby improving the overall performance of the asphalt concrete.

[0003] Existing technology, patent number CN201720078497.8, discloses a sand and gravel drying device. When sand and gravel are dried inside a drying cylinder, they are propelled forward by spiral blades. During the rotation of the blades, when they reach the sand and gravel, the sand and gravel are scooped up by a turning cylinder on the spiral blades. The blades continue to rotate, and when they reach their highest point, the opening of the turning cylinder changes direction, at which point the sand and gravel inside the turning cylinder is poured out. The larger distance between the poured-out sand and gravel makes them easier to dry, reducing the residual moisture. However, in actual use, this existing technology generates a large amount of dust during the drying process, which is discharged from the inlet and outlet. Without efficient dust removal measures, this not only causes serious dust pollution to the production workshop and surrounding environment, endangering the health of operators, but may also lead to accelerated wear of internal equipment components due to dust accumulation, shortening the equipment's service life. Therefore, further improvements are needed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a sand and gravel drying equipment for asphalt concrete production with dust removal function.

[0005] This utility model is achieved through the following technical solution:

[0006] A sand and gravel drying device for asphalt concrete production with dust removal function includes a drying cylinder and an inlet and an outlet pipe located on both sides of the drying cylinder. A heating cylinder is provided on one side of the inlet, and a dust collection box is provided on one side of the drying cylinder. Hot air is injected into the drying cylinder through the heating cylinder, and raw materials are injected into the drying cylinder through the inlet. The drying cylinder can be rotated by a drive mechanism at the bottom of the drying cylinder to dry the raw materials inside the drying cylinder. The drive mechanism at the bottom of the drying cylinder is existing technology and will not be described in detail. A second dust suction hood and a first dust suction hood are respectively provided at the top of the inlet and outlet pipe. A dust suction pump absorbs the dust generated at the inlet and outlet of the drying cylinder by the second dust suction hood and the first dust suction hood, thereby achieving the dust removal function, and the dust is collected in the dust collection box.

[0007] A dust pump is installed at the top of the dust collection box, and a partition plate is fixedly connected to the middle of the dust collection box. A guide hopper and a rotating disk are respectively installed on both sides of the partition plate. A central shaft is inserted into the middle of the rotating disk, a gear is installed on one side of the rotating disk, and a motor is installed on one side of the gear. A through hole is opened on one side of the middle of the partition plate. The guide hopper allows the gas entering the dust collection box to enter the other side of the inner cavity of the dust collection box only through the through hole in the middle of the partition plate. The rotating disk is driven by the gear controlled by starting the motor. The dust collection bag corresponding to the through hole can be replaced to easily switch the dust collection bag for collecting and filtering dust, and to facilitate the replacement and cleaning of the dust collection bag.

[0008] The rotating disk is equipped with limit rings around its perimeter, and a dust collection bag is fixedly connected to one end of the dust pump. Quick-release fixing mechanisms are provided around the rotating disk at positions corresponding to the limit rings. The dust collection bag is limited by the limit rings, and the limit rings and dust collection bag can be easily disassembled and cleaned by the quick-release fixing mechanisms, making it convenient to use.

[0009] Optionally, the second dust suction hood is located on the side of the feed inlet near the drying cylinder, the hot air outlet of the heating cylinder is adjacent to the inner cavity of the drying cylinder, and an inspection door is provided on one side of the dust collection box, through which the dust collection bag can be easily removed and cleaned.

[0010] Optionally, the input end of the vacuum pump is connected to the inner cavity of the first and second vacuum hoods via a pipe, and the output end of the vacuum pump is connected to the cavity on the side of the guide bucket away from the partition plate. When the vacuum pump is started, the dust generated at the inlet and outlet of the drying cylinder can be absorbed by the first and second vacuum hoods and fed into the dust collection box for cleaning.

[0011] Optionally, the side wall of the guide hopper away from the partition plate is fixedly connected to the inner cavity of the dust collection box. The opening at one end of the guide hopper corresponds to the position of the through hole, so that the gas entering can only move to the other side of the dust collection box through the through hole by the guide hopper.

[0012] Optionally, the quick-release fixing mechanism includes a first groove formed around the rotating disk, a first limiting slot symmetrically formed on both sides of the center of the first groove, a fixing plate formed in the center of the first groove, a limiting ring formed inside the first groove, and a threaded hole formed in the center of the rotating disk at a position corresponding to the first limiting slot.

[0013] Optionally, the edge wall of the fixed plate and the edge wall of the rotating disk form a circular structure. Both the edge wall of the fixed plate and the edge wall of the rotating disk are provided with teeth. The gear meshes with the wall of the rotating disk. A toggle bar is fixedly connected to one side of the fixed plate.

[0014] Optionally, a second groove is provided on one side of the fixing plate, and a second limiting groove is provided in the middle of the second groove. The second groove and one side of the inner cavity of the first groove form an annular through hole, and the second limiting groove is adapted to the limiting ring.

[0015] Optionally, limiting strips are fixedly connected to the two sides of the second groove at positions corresponding to the first limiting groove. The limiting strips are located in the middle of the first limiting groove, and a threaded rod is inserted into the middle of the threaded hole. The threaded rod passes through the middle of the limiting strip. By removing the threaded rod and pulling the actuating strip to move the fixing plate out of the first groove, the dust bag and the limiting ring can be easily removed, thereby cleaning the dust inside the dust bag and facilitating installation and replacement. The cooperation between the limiting strips and the first limiting groove improves the stability of the connection between the fixing plate and the rotating disk.

[0016] The beneficial effects of this utility model are:

[0017] This invention first activates the dust pump to generate suction inside the second and first dust hoods, thereby absorbing the dust generated at the inlet and outlet of the drying cylinder and directing it into one side of the guide hopper inside the dust collection box. This prevents dust generated during the drying process from spreading through the inlet and outlet, improving dust removal quality. Furthermore, the dust collected in the air is gathered by a dust collection bag inside the dust collection box, facilitating centralized dust treatment and improving the overall performance.

[0018] At the same time, by starting the motor and controlling the gear belt to rotate the disc, the position of the adjustment hole corresponds to the dust collection bag. When there is a lot of dust inside the dust collection bag and it affects the dust removal quality, the dust collection bag can be replaced, which improves the service life and usage time. In addition, the quick-release fixing mechanism can be used to easily and quickly disassemble and clean multiple dust collection bags when cleaning is required, which improves the usage effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the opening structure of the dust collection box of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the separator plate and the guide bucket of this utility model;

[0022] Figure 4 This is a schematic diagram of the disassembled structure of the partition plate and rotating disk of this utility model;

[0023] Figure 5 This is a schematic diagram showing the disassembled structure of the rotating disk and the fixed plate of this utility model;

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Drying cylinder; 2. Feed inlet; 3. Heating cylinder; 4. Discharge pipe; 5. Dust collection box; 6. First dust suction hood; 7. Second dust suction hood; 8. Dust pump; 9. Divider plate; 10. Guide hopper; 11. Through hole; 12. Rotating disc; 13. Central shaft; 14. Gear; 15. Motor; 16. First groove; 17. First limit slot; 18. Limiting ring; 19. Dust collection bag; 20. Fixing plate; 21. Second groove; 22. Second limit slot; 23. Actuating strip; 24. Limiting strip; 25. Threaded hole; 26. Threaded rod; 27. Inspection door. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and preferred embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] In the description of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 the utility model and simplifying the description, 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 the utility model.

[0028] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] like Figure 1-5As shown, this utility model provides a sand and gravel drying equipment for asphalt concrete production with dust removal function, including a drying cylinder 1 and an inlet 2 and an outlet pipe 4 located on both sides of the drying cylinder 1. A heating cylinder 3 is provided on one side of the inlet 2, and a dust collection box 5 is provided on one side of the drying cylinder 1. Hot air is injected into the interior of the drying cylinder 1 through the heating cylinder 3, and raw materials are injected into the interior of the drying cylinder 1 through the inlet 2. The rotation of the drying cylinder 1 can be controlled by a drive mechanism at the bottom of the drying cylinder 1 to dry the raw materials inside the drying cylinder 1. The drive mechanism at the bottom of the drying cylinder 1 is existing technology and will not be described in detail. A second dust suction hood 7 and a first dust suction hood 6 are respectively provided on the top of the inlet 2 and the outlet pipe 4. A dust suction pump 8 absorbs the dust generated at the inlet and outlet of the drying cylinder 1 by the second dust suction hood 7 and the first dust suction hood 6, thereby achieving the dust removal function, and the dust is collected in the dust collection box 5.

[0030] A dust pump 8 is installed on the top of the dust collection box 5. A partition plate 9 is fixedly connected to the middle of the dust collection box 5. A guide hopper 10 and a rotating disk 12 are respectively installed on both sides of the partition plate 9. A central shaft 13 is inserted into the middle of the rotating disk 12. A gear 14 is installed on one side of the rotating disk 12, and a motor 15 is installed on one side of the gear 14. A through hole 11 is opened on one side of the middle of the partition plate 9. Through the guide hopper 10, the gas entering the dust collection box 5 can only enter the other side of the inner cavity of the dust collection box 5 through the through hole 11 in the middle of the partition plate 9. By starting the motor 15, the gear 14 is controlled to drive the rotating disk 12 to rotate. The dust collection bag 19 corresponding to the through hole 11 can be replaced to easily switch the dust collection bag 19 that collects and filters dust, and to facilitate the replacement and cleaning of the dust collection bag 19.

[0031] Limiting rings 18 are provided around the rotating disk 12. A dust collection bag 19 is fixedly connected to one end of the dust pump 8. Quick-release fixing mechanisms are provided around the rotating disk 12 at positions corresponding to the limiting rings 18. The dust collection bag 19 is limited by the limiting rings 18. The limiting rings 18 and the dust collection bag 19 can be easily disassembled and cleaned by the quick-release fixing mechanisms, making it convenient to use.

[0032] like Figure 1-5As shown, the second dust hood 7 is located on the side of the feed inlet 2 near the drying cylinder 1. The hot air outlet of the heating cylinder 3 is adjacent to the inner cavity of the drying cylinder 1. A maintenance door 27 is provided on one side of the dust collection box 5. The input end of the dust pump 8 is connected to the inner cavity of the first dust hood 6 and the second dust hood 7 through a pipe. The output end of the dust pump 8 is connected to the cavity on the side of the guide bucket 10 away from the partition plate 9. The wall of the guide bucket 10 away from the partition plate 9 is fixedly connected to the four walls of the inner cavity of the dust collection box 5. One end opening of the guide bucket 10 corresponds to the position of the through hole 11. The dust bag 19 can be easily removed and cleaned through the maintenance door 27. When the dust pump 8 is started, the dust generated at the inlet and outlet of the drying cylinder 1 can be absorbed by the first dust hood 6 and the second dust hood 7 and fed into the interior of the dust collection box 5 for cleaning. The guide bucket 10 guides the incoming gas to move to the other side of the dust collection box 5 only through the through hole 11.

[0033] like Figure 2 , 4 As shown in Figure 5, the quick-release fixing mechanism includes a first groove 16 formed around the rotating disk 12. First limiting slots 17 are symmetrically formed on both sides of the center of the first groove 16. A fixing plate 20 is provided in the center of the first groove 16. A limiting ring 18 is disposed inside the first groove 16. A threaded hole 25 is formed in the center of the rotating disk 12 corresponding to the position of the first limiting slot 17. The edge wall of the fixing plate 20 and the edge wall of the rotating disk 12 form a circular structure. Both the edge wall of the fixing plate 20 and the edge wall of the rotating disk 12 are provided with teeth. The gear 14 meshes with the wall of the rotating disk 12. The fixed plate 20 is fixedly connected to one side of a toggle bar 23. A second groove 21 is provided on one side of the fixed plate 20. A second limiting groove 22 is provided in the middle of the second groove 21. The second groove 21 and one side of the inner cavity of the first groove 16 form an annular through hole. The second limiting groove 22 is adapted to the limiting ring 18. Limiting strips 24 are fixedly connected to the two sides of the second groove 21 at positions corresponding to the first limiting groove 17. The limiting strips 24 are located in the middle of the first limiting groove 17. A threaded rod 26 is inserted into the middle of the threaded hole 25. The threaded rod 26 passes through the middle of the limiting strip 24.

[0034] As can be seen, in the above technical solution, by removing the threaded rod 26 and pulling the actuating strip 23 to move the fixing plate 20 out of the first groove 16, the dust collection bag 19 and the limiting ring 18 can be easily removed, thereby cleaning the dust inside the dust collection bag 19 and facilitating installation and replacement. The cooperation of the limiting strip 24 and the first limiting groove 17 improves the stability of the connection between the fixing plate 20 and the rotating disk 12.

[0035] Usage process: When in use, start the dust pump 8 to generate suction inside the second dust hood 7 and the first dust hood 6, thereby absorbing the dust generated at the inlet and outlet of the drying cylinder 1 and inputting it into one side of the guide hopper 10 inside the dust collection box 5. The gas containing dust enters the corresponding dust collection bag 19 through the through hole 11, and the dust in the gas is collected by the dust collection bag 19. The gas is then discharged through the exhaust pipe at the top of the dust collection box 5.

[0036] When there is a lot of dust inside the dust collection bag 19 corresponding to the through hole 11, the motor 15 can be started to control the gear 14 to drive the rotating disk 12 to rotate 90 degrees, so that the through hole 11 corresponds to another dust collection bag 19, which is convenient for replacement and improves the dust collection quality.

[0037] When the dust bag 19 needs to be disassembled and cleaned, open the inspection door 27, remove the two threaded rods 26 on one side of the dust bag 19, and pull the actuating bar 23 to move one end of the fixing plate 20 out of the first groove 16. Then the limiting ring 18 can be used to move the dust bag 19 out, thus removing it for easy cleaning and use.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A sand and stone drying device for asphalt concrete production with dust removal function, characterized in that, The utility model provides a kind of drying cylinder (1) and the feed inlet (2) and discharge pipe (4) located at both sides of drying cylinder (1), one side of the feed inlet (2) is provided with heat supply cylinder (3), one side of the drying cylinder (1) is provided with dust collection box (5), the top of the feed inlet (2) and discharge pipe (4) is respectively provided with second dust cover (7) and first dust cover (6); The top of the dust collection box (5) is provided with a dust suction pump (8), the middle part of the dust collection box (5) is fixedly connected with a partition plate (9), the two sides of the partition plate (9) are respectively provided with a guide hopper (10) and a rotating disc (12), the middle part of the rotating disc (12) is inserted with a central shaft (13), one side of the rotating disc (12) is provided with a gear (14), one side of the gear (14) is provided with a motor (15), and a through hole (11) is formed in one side of the middle part of the partition plate (9). The rotating disc (12) is provided with a limiting ring (18) around it, one end of the dust suction pump (8) is fixedly connected with a dust collection bag (19), and the rotating disc (12) is provided with a quick-release fixing mechanism corresponding to the limiting ring (18) around it.

2. The sand and gravel drying apparatus for asphalt concrete production with dust removal function according to claim 1, characterized in that, The second dust cover (7) is arranged on one side of the feed inlet (2) close to the drying cylinder (1), the heat outlet of the heat supply cylinder (3) is adjacent to the inner cavity of the drying cylinder (1), and one side of the dust collection box (5) is provided with an access door (27).

3. The sand and gravel drying apparatus for asphalt concrete production with dust removal function according to claim 2, characterized in that, The input end of the dust suction pump (8) is connected in communication with the inner cavities of the first dust cover (6) and the second dust cover (7) through a pipeline, and the output end of the dust suction pump (8) is connected in communication with the cavity on the side of the guide hopper (10) away from the partition plate (9).

4. The sand and gravel drying apparatus for asphalt concrete production with dust removal function according to claim 3, characterized in that, The side wall of the guide hopper (10) away from the partition plate (9) is fixedly connected with the inner cavity of the dust collection box (5) around it, and the opening of one end of the guide hopper (10) corresponds to the position of the through hole (11).

5. The sand and gravel drying apparatus for asphalt concrete production with dust removal function according to claim 1, characterized in that, The quick-release fixing mechanism comprises a first groove (16) formed around the rotating disc (12), first limiting grooves (17) symmetrically formed on both sides of the middle part of the first groove (16), a fixed plate (20) arranged in the middle part of the first groove (16), the limiting ring (18) arranged inside the first groove (16), and a threaded hole (25) formed in the middle part of the rotating disc (12) corresponding to the first limiting groove (17).

6. The sand and gravel drying apparatus for asphalt concrete production with dust removal function according to claim 5, characterized in that, The edge wall of the fixed plate (20) and the edge wall of the rotating disc (12) form a circular structure, the edge wall of the fixed plate (20) and the edge wall of the rotating disc (12) are both provided with teeth, the gear (14) is engaged with the wall of the rotating disc (12), and one side of the fixed plate (20) is fixedly connected with a push bar (23).

7. The sand and gravel drying apparatus for asphalt concrete production with dust removal function according to claim 5, characterized in that, One side of the fixed plate (20) is provided with a second groove (21), a second limiting groove (22) is formed in the middle part of the second groove (21), the inner cavity of the second groove (21) and the first groove (16) form a circular through hole on one side, and the second limiting groove (22) is matched with the limiting ring (18).

8. The sand and gravel drying apparatus for asphalt concrete production with dust removal function according to claim 7, characterized in that, The two sides of the second groove (21) are fixedly connected with the limiting clamping strip (24) corresponding to the position of the first limiting clamping groove (17), the limiting clamping strip (24) is arranged in the middle of the first limiting clamping groove (17), the middle of the threaded hole (25) is provided with a threaded rod (26), and the threaded rod (26) penetrates the middle of the limiting clamping strip (24).

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