Aggregate vibration screening device for asphalt concrete production

Abstract

The utility model provides an aggregate vibration screening device for asphalt concrete production, and solves the problem that the screening efficiency is limited due to the fact that the inclination angle of an aggregate vibration screen is generally fixed and is inconvenient to adjust according to the size of stones and the screening requirement in the using process of the aggregate vibration screen. The first adjusting device is arranged on the support to adjust the inclination angle of the vibrating screen, so that the vibrating screen can be adjusted according to the size of stone and the screening requirement, the situation that due to the aggregate accumulation phenomenon, the screening efficiency is too low, due to the fact that aggregate flows too fast, screening is not complete, and the screening quality is affected is avoided; the purpose of optimizing the screening effect of the screening machine is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt concrete production, in particular to an aggregate vibration screening device for asphalt concrete production. Background Art

[0002] Asphalt concrete, commonly known as asphalt concrete, is a mixture made by artificially selecting mineral materials with a certain graded composition, such as crushed stone or crushed gravel, stone chips or sand, mineral powder, etc., and a certain proportion of road asphalt materials, under strictly controlled conditions.

[0003] In the related art, before asphalt concrete is mixed and prepared, the stones need to be screened through a vibrating screen to separate the stones into different grades of crushed stone to facilitate the subsequent concrete batching needs. However, during the use of the aggregate vibrating screen, the inclination angle is usually fixed, which is not convenient to adjust according to the size of the stone and the screening requirements, resulting in limited screening efficiency. Utility Model Content

[0004] In order to solve the problem in the background technology that the aggregate vibrating screen usually has a fixed inclination angle during use, which is not convenient to adjust according to the size of the stone and the screening requirements, resulting in limited screening efficiency, the utility model proposes an aggregate vibrating screening device for asphalt concrete production.

[0005] The technical scheme of the utility model is: an aggregate vibrating screening device for asphalt concrete production, comprising a vibrating screen, the vibrating screen comprising an upper opening structure and a shell arranged obliquely from top to bottom and from left to right, a vibrating motor is fixedly arranged on the shell, two screens arranged at intervals up and down are fixedly arranged in the shell, the right end of the shell discharger is fixedly connected and communicated with the discharger, a dust cover is fixedly arranged at the opening of the shell, and a feed barrel is fixedly connected and communicated with the dust cover;

[0006] A bracket is provided at the bottom of the vibrating screen, and a first adjusting device is provided on the bracket. The first adjusting device is used to adjust the inclination angle of the vibrating screen.

[0007] Preferably, the bracket includes four rectangularly arranged legs, spring supports are fixedly provided at the top ends of the two right legs, the right end of the shell is movably arranged at the top ends of the two right legs through the spring supports, and a connecting rod is fixedly provided between two adjacent legs.

[0008] Preferably, a through hole is provided on the left connecting rod, the first adjusting device comprises a screw rod rotatably arranged in the through hole, the bottom end of the screw rod passes through the through hole and is fixedly provided with a rotating handle, the screw rod is fixedly sleeved with two limit rings spaced apart from each other, and the two limit rings are respectively abutted against the upper and lower sides of the connecting rod on the left;

[0009] A U-shaped rod with an upper opening structure is slidably provided between the two left legs, a spring support is fixedly provided at the top of the U-shaped rod, the left end of the shell is movably arranged on the top of the U-shaped rod through the spring support, a thread groove that is transparent from top to bottom is opened on the U-shaped rod, and a screw rod is threadedly penetrated on the U-shaped rod through the thread groove.

[0010] Preferably, a sliding block is slidably provided in the guide slot, and the two sliding blocks are respectively fixed on the front and rear sides of the U-shaped rod.

[0011] Preferably, the spring support located on the right side includes a vibration spring fixedly arranged at the top end of the support leg located on the right side, and an L-shaped plate is fixedly arranged at the top end of the vibration spring located on the right side, and the L-shaped plate is hingedly arranged at the right end of the housing;

[0012] The spring support on the left includes a vibration spring fixed on the top of the U-shaped rod, and an L-shaped long plate is fixed on the top of the vibration spring on the left. The L-shaped long plate is provided with a long groove extending in the left and right directions and transparent from front to back. A hinge shaft is slidably inserted in the long groove, and the hinge shaft is fixed at the left end of the shell.

[0013] Preferably, a fixed plate extending in the front-to-back direction is fixed in the feed barrel, a gap is left between the fixed plate and the inner right side of the feed barrel, a baffle is slidably penetrated in the gap, the baffle is located above the screen, the baffle is vertically arranged between the screen, and the bottom end of the baffle can pass through the gap;

[0014] The feed barrel is provided with a second adjusting device, the baffle is arranged on the second adjusting device, and the second adjusting device is used for adjusting the distance between the baffle and the screen.

[0015] Preferably, the second adjusting device comprises a shaft seat fixedly arranged on the right side of the feed barrel, a screw rod 2 is rotatably arranged in the shaft seat, and a rotating handle 2 is fixedly arranged on the top end of the screw rod 2;

[0016] A slide groove is provided on the right side of the feed barrel, which is transparent from left to right and extends in the up-down direction. A lifting seat is slidably penetrated through the slide groove. The left end of the lifting seat is fixed on the top of the baffle. The right end of the lifting seat passes through the slide groove and is provided with a second thread groove which is transparent from top to bottom. The lifting seat is threadedly sleeved on the second screw through the second thread groove.

[0017] Preferably, the dust cover is fixedly connected and connected with a branch pipe, the ends of the two branch pipes close to the dust cover are respectively located on the right side of the feed barrel and the left side of the discharger, the ends of the two branch pipes away from the dust cover are fixedly connected and connected with a telescopic hose extending in the up and down directions, the top of the telescopic hose is fixedly provided with an air intake duct extending backward, the rear end of the air intake duct is fixedly connected and connected with a bag dust collector, and the air outlet of the bag dust collector is provided with a suction fan.

[0018] Advantages of the utility model: The utility model arranges a first adjustment device on the bracket to adjust the inclination angle of the vibrating screen, so that the vibrating screen can be adjusted according to the size of the stone and the screening demand, avoiding the accumulation of aggregates resulting in low screening efficiency, avoiding too fast flow of aggregates resulting in incomplete screening and affecting the screening quality, thereby achieving the purpose of optimizing the screening effect of the screening machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0022] Figure 3 This is a structural sectional view of the housing of the utility model;

[0023] Figure 4 For this utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 5 For this utility model Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0025] Figure 6 For this utility model Figure 3 A magnified schematic diagram of the structure at C in the middle;

[0026] Figure 7 For this utility model Figure 1 Enlarged schematic diagram of the structure at point D in the middle.

[0027] In the figure: 1. bracket; 101. support leg; 102. connecting rod; 2. shell; 3. vibration motor; 4. screen; 5. dust cover; 6. feed barrel; 7. first adjusting device; 701. U-shaped rod; 702. screw rod 1; 703. handle rod 1; 704. limit ring; 705. guide slide; 706. slider; 8. spring support; 801. vibration spring; 802. L-shaped long plate; 803. long groove; 9. discharger; 10. fixing plate; 11. baffle; 12. second adjusting device; 121. shaft seat; 122. screw rod 2; 123. handle rod 2; 124. lifting seat; 13. branch pipe; 14. telescopic hose; 15. air intake duct; 16. bag filter. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Embodiment 1: A vibrating screening device for aggregates used in asphalt concrete production, such as Figure 1-7 As shown, it includes a vibrating screen. Specifically, the vibrating screen includes an upper opening structure and a shell 2 that is tilted from top to bottom and from left to right. A vibration motor 3 is fixedly provided on the shell 2. Two screens 4 that are spaced apart from each other are fixedly provided in the shell 2. The screen holes of the upper screen 4 are larger than those of the lower screen. The right end of the discharger 9 of the shell 2 is fixedly connected and communicated with the discharger 9. A dust cover 5 that can prevent dust from spreading during screening is fixedly provided at the opening of the shell 2. A feeding barrel 6 is fixedly connected and communicated with the dust cover 5.

[0030] A bracket 1 is provided at the bottom of the vibrating screen. Specifically, the bracket 1 includes four rectangularly arranged legs 101, a connecting rod 102 is fixed between two adjacent legs 101, a spring support 8 is fixed at the top of the two legs 101 on the right, and the right end of the shell 2 is movably arranged on the top of the two legs 101 on the right through the spring support 8. Specifically, the spring support 8 on the right includes a vibration spring 801 fixed at the top of the leg 101 on the right, and an L-shaped plate is fixed at the top of the vibration spring 801 on the right, and the L-shaped plate is hinged at the right end of the shell 2.

[0031] The bracket 1 is provided with a first adjusting device 7 for adjusting the inclination angle of the vibrating screen to adjust the screening efficiency. Specifically, a through hole that is transparent from top to bottom is opened on the left connecting rod 102. The first adjusting device 7 includes a screw rod 702 that is rotatably arranged in the through hole. The bottom end of the screw rod 702 passes through the through hole and is fixedly provided with a handle 703. Two limit rings 704 that are spaced apart from each other are fixedly sleeved on the screw rod 702. The two limit rings 704 are respectively abutted against the upper and lower sides of the connecting rod 102 on the left; a U-shaped rod 701 with an upper opening structure is slidably provided between the two supporting legs 101 on the left, and a threaded groove 1 that is transparent from top to bottom is opened on the U-shaped rod 701. The screw rod 702 is threadedly penetrated on the U-shaped rod 701 through the threaded groove 1; a spring support 8 is fixedly provided on the top of the U-shaped rod 701, and the left end of the shell 2 is movably provided on the top of the U-shaped rod 701 through the spring support 8.

[0032] By rotating the handle 703, the screw 702 is driven to rotate, and the U-shaped rod 701 is driven to move up and down, thereby driving the left end of the shell 2 to rise and fall, so as to adjust the inclination angle of the vibrating screen according to the size of the stone and the screening requirements, thereby improving the screening efficiency.

[0033] The spring support 8 on the left includes a vibration spring 801 fixed on the top of the U-shaped rod 701, and an L-shaped long plate 802 is fixed on the top of the vibration spring 801 on the left. The L-shaped long plate 802 is provided with a long groove 803 extending in the left and right directions and transparent from front to back. A hinge shaft is slidably penetrated in the long groove 803, and the hinge shaft is fixed on the left end of the shell 2; the hinge shaft fixed on the shell 2 is slidably hinged on the L-shaped long plate 802 through the long groove 803, so that when the inclination angle of the vibrating screen is adjusted, sliding compensation can be performed between the left end of the shell 2 and the spring support 8.

[0034] The bracket 1 is provided with a guide component that can further guide the U-shaped rod 701 to move up and down. Specifically, the two legs 101 on the left are each provided with a guide groove 705 extending in the up and down direction and transparent from front to back. The guide component includes a slider 706 that slides through the guide groove 705, and the two sliders 706 are respectively fixed on the front and rear sides of the U-shaped rod 701.

[0035] A fixing plate 10 extending in the front-to-back direction is fixedly provided in the feed barrel 6, a gap is left between the fixing plate 10 and the inner right side of the feed barrel 6, a baffle 11 is slidably penetrated in the gap, the baffle 11 is located above the screen 4, the baffle 11 is vertically arranged between the screen 4, and the bottom end of the baffle 11 can pass through the gap; a second adjusting device 12 is provided on the feed barrel 6, the baffle 11 is arranged on the second adjusting device 12, and the second adjusting device 12 is used to adjust the distance between the baffle 11 and the screen 4. Specifically, the second adjusting device 12 It includes an axle seat 121 fixed on the right side of the feed barrel 6, a screw rod 122 rotatably penetrates the axle seat 121, a turning handle 123 is fixed on the top of the screw rod 122; a sliding groove which is transparent from left to right and extends in the up-down direction is opened on the right side of the feed barrel 6, a lifting seat 124 is slidably penetrated through the sliding groove, the left end of the lifting seat 124 is fixed on the top of the baffle 11, the right end of the lifting seat 124 passes through the sliding groove and is provided with a thread groove 2 which is transparent from top to bottom, and the lifting seat 124 is threadedly sleeved on the screw rod 122 through the thread groove 2.

[0036] By rotating the handle 123, the screw 122 is driven to rotate, and the lifting seat 124 is driven to slide up and down along the slide groove, and the baffle 11 is driven to move up and down, thereby changing the distance between the baffle 11 and the screen 4, thereby changing the feeding speed and feeding amount of the aggregate at the feeding port, changing the residence time of the aggregate on the screen and the screening effect, optimizing the screening effect, meeting the screening needs of aggregates with different particle size requirements, allowing the aggregate to be fed evenly, and maintaining the stable operation of the equipment.

[0037] The dust cover 5 is fixedly connected and communicated with a branch pipe 13, and one end of the two branch pipes 13 close to the dust cover 5 is respectively located on the right side of the feed barrel 6 and the left side of the discharger 9, and one end of the two branch pipes 13 away from the dust cover 5 is fixedly connected and communicated with a telescopic hose 14 extending in the up-and-down direction, and the top of the telescopic hose 14 is fixedly provided with an air intake duct 15 extending backward, and the telescopic hose 14 can compensate for the deformation between the branch pipe 13 and the air intake duct 15 during the angle adjustment of the vibrating screen, and the rear end of the air intake duct 15 is fixedly connected and communicated with a bag dust collector 16, and a suction fan is provided at the air outlet of the bag dust collector 16.

[0038] By setting up a bag dust collector 16 to absorb the dust in the vibrating screen, it is possible to prevent dust from escaping everywhere due to vibration during the aggregate screening process, avoid affecting the construction of the workers, and prevent pollution to the environment. At the same time, the two branch pipes 13 are respectively arranged near the feed barrel 6 and the discharger 9, which can form a negative pressure near the feed barrel 6 and the discharger 9, thereby avoiding the diffusion of dust during the aggregate feeding process and preventing the dust from entering the outside of the screening machine along with the aggregate during the aggregate discharging process.

[0039] Working principle: When in use, turn on the vibration motor 3, put the aggregate before screening from the feed barrel 6 into the screening machine, the aggregate is vibrated by the vibration motor 3 on the surface of the screen 4, and is screened on the surfaces of the two screens 4. The screened aggregate is discharged from the discharger 9. At the same time, the dust generated during the screening process enters the bag dust collector 16 through the branch pipe 13 and the air intake pipe 15 for dust filtration.

[0040] When aggregates are piled up or flow too fast, resulting in incomplete screening, the screw 702 is rotated by rotating the handle 703, driving the U-shaped rod 701 to move up and down, and then driving the left end of the shell 2 to rise and fall, so as to achieve the purpose of adjusting the inclination angle of the vibrating screen.

[0041] By rotating the second handle 123, the second screw 122 is driven to rotate, and the lifting seat 124 is driven to slide up and down along the slide groove, and the baffle 11 is driven to move up and down, thereby changing the distance between the baffle 11 and the screen 4, thereby changing the feed speed and feed amount of the aggregate at the feed port, changing the residence time of the aggregate on the screen and the screening effect, and optimizing the screening effect.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An aggregate vibrating screening device for asphalt concrete production, characterized in that: The vibrating screen comprises a housing (2) with an upper opening structure and arranged obliquely from top to bottom and from left to right, a vibrating motor (3) being fixedly provided on the housing (2), two screens (4) being fixedly provided in the housing (2) and spaced apart from each other, a right end of a discharger (9) of the housing (2) being fixedly connected to and in communication with the discharger (9), a dust cover (5) being fixedly provided at the opening of the housing (2), and a feed barrel (6) being fixedly connected to and in communication with the dust cover (5); A bracket (1) is provided at the bottom of the vibrating screen, and a first adjusting device (7) is provided on the bracket (1). The first adjusting device (7) is used to adjust the inclination angle of the vibrating screen.

2. The aggregate vibration screening device for asphalt concrete production according to claim 1 is characterized in that: The bracket (1) comprises four rectangularly arranged supporting legs (101), the top ends of the two supporting legs (101) located on the right are fixedly provided with spring supports (8), the right end of the housing (2) is movably arranged on the top ends of the two supporting legs (101) located on the right through the spring supports (8), and a connecting rod (102) is fixedly provided between two adjacent supporting legs (101).

3. An aggregate vibration screening device for asphalt concrete production according to claim 1 or 2, characterized in that: A through hole is provided on the left connecting rod (102), and the first adjusting device (7) includes a screw rod (702) rotatably arranged in the through hole, the bottom end of the screw rod (702) passes through the through hole and is fixedly provided with a rotating handle (703), and two limit rings (704) are fixedly sleeved on the screw rod (702) and are arranged at intervals in the upper and lower directions, and the two limit rings (704) are respectively attached to the upper and lower sides of the connecting rod (102) on the left; A U-shaped rod (701) with an upper opening structure is slidably disposed between the two left legs (101), a spring support (8) is fixedly disposed at the top of the U-shaped rod (701), the left end of the housing (2) is movably disposed on the top of the U-shaped rod (701) via the spring support (8), a threaded groove (1) which is transparent from top to bottom is disposed on the U-shaped rod (701), and a screw (702) is threadedly disposed on the U-shaped rod (701) via the threaded groove (1).

4. The aggregate vibration screening device for asphalt concrete production according to claim 3 is characterized in that: A sliding block (706) is slidably disposed in the guide slide groove (705), and the two sliding blocks (706) are respectively fixedly disposed on the front and rear sides of the U-shaped rod (701).

5. The aggregate vibration screening device for asphalt concrete production according to claim 3 is characterized in that: The spring support (8) located on the right side comprises a vibration spring (801) fixedly arranged at the top end of the support leg (101) located on the right side, and an L-shaped plate is fixedly arranged at the top end of the vibration spring (801) located on the right side, and the L-shaped plate is hingedly arranged at the right end of the housing (2); The spring support (8) located on the left side includes a vibration spring (801) fixedly arranged at the top end of the U-shaped rod (701), and an L-shaped long plate (802) is fixedly arranged at the top end of the vibration spring (801) located on the left side. The L-shaped long plate (802) is provided with a long groove (803) extending in the left-right direction and being transparent from front to back. A hinge shaft is slidably inserted into the long groove (803), and the hinge shaft is fixedly arranged at the left end of the housing (2).

6. The aggregate vibration screening device for asphalt concrete production according to claim 1, characterized in that: A fixed plate (10) extending in the front-to-back direction is fixedly provided in the feed barrel (6), a gap is left between the fixed plate (10) and the right side of the inside of the feed barrel (6), a baffle (11) is slidably provided in the gap, the baffle (11) is located above the screen (4), the baffle (11) is vertically arranged between the screen (4), and the bottom end of the baffle (11) can pass through the gap; A second adjusting device (12) is provided on the feed barrel (6), and the baffle (11) is provided on the second adjusting device (12). The second adjusting device (12) is used to adjust the distance between the baffle (11) and the screen (4).

7. The aggregate vibration screening device for asphalt concrete production according to claim 1, characterized in that: The second adjusting device (12) comprises a shaft seat (121) fixedly arranged on the right side of the feeding barrel (6), a second screw rod (122) rotatably passing through the shaft seat (121), and a second rotating handle (123) fixedly arranged at the top end of the second screw rod (122); The right side of the feed barrel (6) is provided with a slide groove which is transparent from left to right and extends in the up-down direction. A lifting seat (124) is slidably penetrated through the slide groove. The left end of the lifting seat (124) is fixedly arranged on the top of the baffle (11). The right end of the lifting seat (124) passes through the slide groove and is provided with a second thread groove which is transparent from top to bottom. The lifting seat (124) is threadably sleeved on the second screw rod (122) through the second thread groove.

8. The aggregate vibration screening device for asphalt concrete production according to claim 1, characterized in that: The dust cover (5) is fixedly connected to and communicated with a branch pipe (13), one end of the two branch pipes (13) close to the dust cover (5) is respectively located on the right side of the feed tube (6) and the left side of the discharger (9), and one end of the two branch pipes (13) away from the dust cover (5) is fixedly connected to and communicated with a telescopic hose (14) extending in the up-down direction, and the top end of the telescopic hose (14) is fixedly provided with an air intake duct (15) extending backward, and the rear end of the air intake duct (15) is fixedly connected to and communicated with a bag dust collector (16), and an air suction fan is provided at the air outlet of the bag dust collector (16).

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