Aggregate screening device for concrete production

Abstract

The aggregate screening device for concrete production comprises a material conveying frame, a material screening box and a butt joint clamping seat, the material conveying frame is fixedly installed on the outer surface of one end of the material screening box, the butt joint clamping seat is fixedly installed on the outer surface of the other end of the material screening box, and a screen is movably installed on the inner side of the material screening box; the screening box and the screen are connected and fixed through a vibrating frame, a first rotating rod matched with the screen for use is movably installed on the lower portion of one end of the vibrating frame, a second rotating rod matched with the screen for use is movably installed on the lower portion of the other end of the vibrating frame, and the first rotating rod and the second rotating rod are symmetrically arranged. The vibration frame and the screening box are connected and fixed through a buffer. A material receiving box is mounted on the inner side of the butt joint clamping seat in a splicing manner; when the aggregate screening device for concrete production is used, the retention time during aggregate screening can be flexibly controlled, meanwhile, the size of the screen can be flexibly adjusted, and the aggregate screening effect is improved.

Description

Technical Field

[0001] The invention belongs to the field of concrete technology, and more specifically relates to an aggregate screening device for concrete production. Background Art

[0002] Concrete aggregate refers to the granular loose material that acts as a skeleton or filler in concrete. It is one of the main components of concrete. Concrete aggregate can be divided into coarse aggregate and fine aggregate according to the particle size. The screening device can perform screening operations according to the coarseness of the aggregate.

[0003] The application document with publication number CN117600058A records an aggregate screening device for concrete production, including a support frame, an adjustment device, a vibrating device and an auxiliary device, one side of the support frame is rotatably connected to an active roller, one side of the support frame is equipped with a motor for driving the active roller to rotate, the output end of the motor is fixedly connected to the active roller, the arc surface of the active roller is transmission-connected to a conveyor belt for automatically conveying concrete aggregates, one side of the support frame is rotatably connected to a driven roller, the arc surface of the driven roller is transmission-connected to the conveyor belt, and a screening bucket for screening concrete aggregates is installed on the side of the support frame away from the conveyor belt; concrete aggregates of different coarseness are screened, so that different types of concrete products can be produced from the screened concrete aggregates, thereby improving the application scope of the aggregate screening device. The device has high automation and is worthy of in-depth promotion.

[0004] The above equipment has certain deficiencies when performing concrete aggregate screening operations. It uses a screen structure to complete aggregate screening by vibration, but cannot control the residence time of aggregate on the screen, making it easy for aggregate to be mixed and discharged, and cannot flexibly adjust the size of the screen, and cannot flexibly apply to the screening operations of aggregates of different specifications; secondly, the above equipment only has a single aggregate conveying structure, and aggregates will clump after being stored for a long time. The vibrating screen cannot completely vibrate the agglomerated aggregates, affecting the screening effect; at the same time, the above equipment is prone to dust when performing aggregate discharge operations, affecting the working environment, and does not have a buffering noise reduction structure, and the vibration screening noise is relatively large, affecting its use effect. Summary of the invention

[0005] The purpose of the present invention is to provide an aggregate screening device for concrete production, which can solve the existing problems.

[0006] The problem to be solved by the present invention is:

[0007] 1. Traditional equipment uses a screen structure to complete the screening of aggregates by vibration, but it cannot control the retention time of aggregates on the screen, making it easy for aggregates to be mixed and discharged, and it cannot flexibly adjust the size of the screen, and cannot flexibly apply to the screening operation of aggregates of different specifications;

[0008] 2. Secondly, the traditional equipment only has a single aggregate conveying structure, and the aggregate will clump after being stored for a long time. The vibrating screen cannot completely disperse the agglomerated aggregate, which affects the screening effect;

[0009] 3. At the same time, the above equipment is prone to dust generation during aggregate discharge operations, which affects the working environment. It does not have a buffering and noise reduction structure, and the vibration screening noise is relatively large, which affects its use effect.

[0010] The purpose of the present invention can be achieved through the following technical solutions:

[0011] An aggregate screening device for concrete production comprises a feed frame, a screening box and a docking card seat, the feed frame is fixedly mounted on the outer surface of one end of the screening box, the docking card seat is fixedly mounted on the outer surface of the other end of the screening box, a screen is movably mounted on the inner side of the screening box, the screening box and the screen are connected and fixed by a vibration frame, a first rotating rod used in conjunction with the screen is movably mounted on the lower part of one end of the vibration frame, a second rotating rod used in conjunction with the screen is movably mounted on the lower part of the other end of the vibration frame, the first rotating rod and the second rotating rod are symmetrically arranged, and the vibration frame and the screening box are connected and fixed by a buffer; a material receiving box is spliced ​​and mounted on the inner side of the docking card seat, and a material spreading frame is fixedly mounted on the outer surface of the upper end of the feed frame.

[0012] As a further technical solution of the present invention, several groups of support rods are movably installed on the inner side of the vibration frame, and a roller brush rod is movably installed inside the vibration frame between two groups of support rods. The support rod and the roller brush rod are in contact with the lower surface of the screen. The vibration of the vibration frame can drive the screen to vibrate. When aggregate is poured onto the screen, vibration screening operation can be performed, and the support rods play an auxiliary supporting role on the lower part of the screen to prevent the screen from sinking. When the screen moves, the roller brush rod can be used to clean the mesh of the screen, so that the screen maintains a good screening effect.

[0013] As a further technical solution of the present invention, a transmission frame is fixedly installed on the outer surface of one end of the vibration frame, and a vibrator is fixedly installed in the middle position of the outer surface of the transmission frame. The overall structure of the vibration frame is a rectangular frame structure. The surface of the screen is provided with a plurality of groups of mesh holes. The first rotating rod and the second rotating rod are both driven by a motor. The screen cooperates with the first rotating rod and the second rotating rod to form two usage modes on the vibration frame. The modes are as follows: Figure 7In the form shown in A, at this time, the two ends of the screen are respectively fixed on the first rotating rod and the second rotating rod. When the first rotating rod or the second rotating rod rotates, the screen can be driven to move, so that the two ends of the screen are respectively wound on the first rotating rod or the second rotating rod. At this time, a screen with several groups of mesh holes can be installed, and the position of the screen can be adjusted by rotating the first rotating rod or the second rotating rod, thereby adjusting the mesh area to achieve screening operations for aggregates of different sizes. Method 2 is as follows Figure 7 In the form shown in B, the two ends of the screen are butt-jointed with each other, and the first rotating rod and the second rotating rod are sleeved on the inner side of the screen. When the first rotating rod and the second rotating rod rotate, the screen can be driven to move in a circular motion. When aggregate is placed on the upper surface of the screen, the retention time of the aggregate on the screen can be increased, thereby improving its screening effect.

[0014] As a further technical solution of the present invention, two groups of inclined guide plates are fixedly installed on the outer surface of the upper end of the material receiving box, and the two groups of inclined guide plates are inclined in an "eight" shape. A side rotating cover plate is movably installed on the upper end of the screening box. The two groups of inclined guide plates with an "eight" shape structure can act as a buffer when the aggregate falls into the material receiving box, so that the aggregate is discharged from the groove between the two groups of inclined guide plates, thereby avoiding dust from occurring during the dropping of the aggregate.

[0015] As a further technical solution of the present invention, a rolling cylinder is movably installed on the inner side of the material spreading rack, and the material spreading rack and the rolling cylinder are movably connected via a docking rod. A plurality of groups of conical heads are fixedly installed on the outer surface of the rolling cylinder. When the material conveying rack conveys the aggregate, the material spreading rack can be used in conjunction with the rolling cylinder to roll the aggregate, and the conical head can crush the aggregate when the rolling cylinder rotates, thereby crushing the block aggregate and improving its screening effect.

[0016] As a further technical solution of the present invention, spring rods used in conjunction with docking rods are movably installed on the inner surfaces of both ends of the material spreading rack, and the two ends of the docking rods and the lower ends of the spring rods are movably connected through a rotating shaft seat. The spring rods are used in conjunction with the rotating shaft seat to make the rolling cylinder and the docking rod have an elastic rolling structure, and pressure is applied to the rolling cylinder and the docking rod through the spring rods, so that the rolling cylinder performs an elastic rolling operation on the aggregate on the conveyor belt.

[0017] As a further technical solution of the present invention, a discharge nozzle is fixedly installed on the end and side of the screening box, and a sloped baffle is installed on the upper position of one end of the discharge nozzle, and a spray rack is fixedly installed on the inner side of the sloped baffle. When the discharge nozzle performs the aggregate discharging operation, the spray rack of the sloped baffle can spray water mist, thereby reducing the dust of the aggregate.

[0018] As a further technical solution of the present invention, a vibrating disk is movably installed at the rear end of the discharge nozzle, and the vibrating disk is movably installed below the screen. A driving roller is arranged at the lower part of the vibrating disk, and the driving roller has an overall elliptical structure. The vibrating disk and the screen box are movably connected by a docking shaft, and the driving roller is driven by a motor, so that the elliptical driving roller drives the vibrating disk to bump up and down when it rotates, so that the vibrating disk discharges aggregate on its surface during the vibration process.

[0019] As a further technical solution of the present invention, a tension spring is provided at one end of the buffer, and the buffer and the vibration frame are elastically connected through the tension spring. The tension spring is used to make the buffer and the vibration frame an elastic buffer structure, thereby preventing the vibration frame from transmitting the vibration to the screening box, thereby playing a buffering and protective role.

[0020] As a further technical solution of the present invention, the buffer and the screening box are fixedly connected by a fastening bolt, and both ends of the tension spring are fixed by a hanging ring.

[0021] Beneficial effects of the present invention:

[0022] 1. By setting the first rotating rod, the second rotating rod and the screen, when the aggregate screening device for concrete production is used, the retention time of aggregate screening can be flexibly controlled, and the size of the screen can be flexibly adjusted to improve the aggregate screening effect;

[0023] During operation, the screen mesh cooperates with the first rotating rod and the second rotating rod to form two usage modes on the vibration frame. Mode 1: Figure 7 In the form shown in A, at this time, the two ends of the screen are respectively fixed on the first rotating rod and the second rotating rod. The user uses the conveyor belt on the feed frame to transport the aggregate to the inside of the screening box, and wraps the two ends of the screen around the first rotating rod or the second rotating rod. At this time, a screen with several groups of mesh holes can be installed, and the position of the screen can be adjusted by rotating the first rotating rod or the second rotating rod, thereby adjusting the mesh area to achieve screening operations for aggregates of different sizes. Method 2, such as Figure 7 In the form shown in B, the two ends of the screen are butted against each other, and the first rotating rod and the second rotating rod are sleeved on the inner side of the screen. The rotation of the first rotating rod or the second rotating rod can be controlled by a motor. When the first rotating rod or the second rotating rod rotates, the screen can be driven to move, so that the screen moves in the opposite direction of the movement of the aggregate. When the first rotating rod and the second rotating rod rotate, the screen can be driven to move in a circular motion. When the aggregate is placed on the upper surface of the screen, the retention time of the aggregate on the screen can be increased, thereby improving its screening effect, avoiding the aggregate being discharged from the discharge nozzle without being fully screened, and improving the aggregate screening effect.

[0024] 2. By setting up a material spreading rack, when the aggregate screening device for concrete production is used, it is provided with a rolling auxiliary structure, which can complete the pretreatment of agglomerated aggregates during the feeding process and improve the subsequent screening effect of aggregates;

[0025] When in use, the conveyor belt of the feed frame can be used to complete the conveying operation of the aggregate. When the feed frame is conveying the aggregate, the spreading frame and the rolling drum can be used to roll the aggregate, and the conical head can crush the aggregate when the rolling drum rotates, and crush the block aggregate to improve the screening effect. Secondly, the spring rod is used in conjunction with the rotating shaft seat to make the rolling drum and the docking rod have an elastic rolling structure. The spring rod is used to apply pressure to the rolling drum and the docking rod, so that the rolling drum performs an elastic rolling operation on the aggregate on the conveyor belt.

[0026] 3. By setting up the inclined guide plate and the spray rack, when the aggregate screening device for concrete production is used, it has a dust protection structure to avoid dust from occurring during the aggregate screening and discharging process, thereby improving its working environment;

[0027] During operation, when the discharging nozzle is discharging aggregates, firstly, the spray rack with the inclined baffle can be used to spray water mist, thereby reducing the dust of the aggregates. Secondly, two groups of inclined guide plates arranged in an eight-shaped structure can play a buffering role when the aggregates fall into the receiving box, so that the aggregates are discharged from the groove between the two groups of inclined guide plates, avoiding the dust of the aggregates during the dropping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 It is a schematic diagram of the overall structure of an aggregate screening device for concrete production according to the present invention;

[0030] Figure 2 It is an overall structural diagram of a vibration frame in an aggregate screening device for concrete production of the present invention;

[0031] Figure 3 It is an overall structural diagram of a material receiving box in an aggregate screening device for concrete production of the present invention;

[0032] Figure 4 It is a planar structural diagram of a material spreading rack in an aggregate screening device for concrete production according to the present invention;

[0033] Figure 5 It is an overall structural diagram of a vibrating material plate in an aggregate screening device for concrete production of the present invention;

[0034] Figure 6 It is a planar structural diagram of a buffer in an aggregate screening device for concrete production according to the present invention;

[0035] Figure 7 The present invention provides two planar structural diagrams of a screen in an aggregate screening device for concrete production in states A and B.

[0036] In the figure: 1. feed rack; 2. screening box; 3. discharge nozzle; 4. docking card seat; 5. material collection box; 6. screen; 7. side rotary cover plate; 8. material spreading rack; 9. conveyor belt; 10. buffer; 11. first rotating rod; 12. vibration frame; 13. support rod; 14. roller brush rod; 15. second rotating rod; 16. transmission frame; 17. vibrator; 18. inclined guide plate; 19. spring rod; 20. shaft seat; 21. rolling cylinder; 22. conical head; 23. docking rod; 24. inclined baffle; 25. spray rack; 26. driving roller; 27. vibrating material plate; 28. fastening bolt; 29. ​​tension spring; 30. docking shaft. DETAILED DESCRIPTION

[0037] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0038] like Figure 1 As shown, an aggregate screening device for concrete production comprises a feed frame 1, a screening box 2 and a docking card seat 4, the feed frame 1 is fixedly mounted on the outer surface of one end of the screening box 2, the docking card seat 4 is fixedly mounted on the outer surface of the other end of the screening box 2, a screen 6 is movably mounted on the inner side of the screening box 2, the screening box 2 and the screen 6 are connected and fixed by a vibration frame 12, a first rotating rod 11 used in conjunction with the screen 6 is movably mounted on the lower part of one end of the vibration frame 12, a second rotating rod 15 used in conjunction with the screen 6 is movably mounted on the lower part of the other end of the vibration frame 12, the first rotating rod 11 and the second rotating rod 15 are symmetrically arranged, and the vibration frame 12 and the screening box 2 are connected and fixed by a buffer 10; a material receiving box 5 is spliced ​​and mounted on the inner side of the docking card seat 4, and a material spreading frame 8 is fixedly mounted on the outer surface of the upper end of the feed frame 1.

[0039] like Figure 2 As shown, a plurality of groups of support rods 13 are movably installed on the inner side of the vibration frame 12, and a roller brush rod 14 is movably installed inside the vibration frame 12 between two groups of support rods 13. Both the support rods 13 and the roller brush rod 14 are in contact with the lower surface of the screen 6. The vibration of the vibration frame 12 can drive the screen 6 to vibrate, and when aggregate is poured onto the screen 6, a vibration screening operation can be performed, and the support rods 13 play an auxiliary supporting role on the lower part of the screen 6 to prevent the screen 6 from sinking. When the screen 6 moves, the roller brush rod 14 can be used to clean the mesh of the screen 6, so that the screen 6 maintains a good screening effect.

[0040] To improve the screening effect of aggregates, Figure 2As shown, a transmission frame 16 is fixedly installed on the outer surface of one end of the vibration frame 12, and a vibrator 17 is fixedly installed at the middle position of the outer surface of the transmission frame 16. The vibration frame 12 is a rectangular frame structure as a whole. The surface of the screen 6 is provided with a plurality of groups of mesh holes. The first rotating rod 11 and the second rotating rod 15 are both driven by a motor. The screen 6 cooperates with the first rotating rod 11 and the second rotating rod 15 to form two usage modes on the vibration frame 12. The modes are as follows Figure 7 In the form shown in A, at this time, the two ends of the screen 6 are respectively fixed on the first rotating rod 11 and the second rotating rod 15. When the first rotating rod 11 or the second rotating rod 15 rotates, the screen 6 can be driven to move, so that the two ends of the screen 6 are respectively wound on the first rotating rod 11 or the second rotating rod 15. At this time, the screen 6 with several groups of mesh holes can be installed, and the position of the screen 6 is adjusted by rotating the first rotating rod 11 or the second rotating rod 15, thereby adjusting the mesh area, so as to realize the screening operation of aggregates of different sizes. The second method is as follows Figure 7 In the form shown in B, the two ends of the screen 6 are butted against each other, and the first rotating rod 11 and the second rotating rod 15 are sleeved on the inner side of the screen 6. When the first rotating rod 11 and the second rotating rod 15 rotate, the screen 6 can be mobilized to move in a circular motion. When aggregate is placed on the upper surface of the screen 6, the retention time of the aggregate on the screen 6 can be increased, thereby improving its screening effect.

[0041] To solve the dust problem of aggregate, Figure 3 As shown, two groups of inclined guide plates 18 are fixedly installed on the outer surface of the upper end of the material receiving box 5, and the two groups of inclined guide plates 18 are inclined in an "eight" shape. A side rotary cover plate 7 is movably installed on the upper end of the screening box 2. The two groups of inclined guide plates 18 with an "eight" structure can play a buffering role when the aggregate falls into the material receiving box 5, so that the aggregate is discharged from the groove between the two groups of inclined guide plates 18, thereby avoiding dust from occurring during the dropping of the aggregate.

[0042] To solve the problem of aggregate agglomeration, Figure 4 As shown, a rolling cylinder 21 is movably installed on the inner side of the material spreading rack 8, and the material spreading rack 8 and the rolling cylinder 21 are movably connected via a docking rod 23. A plurality of groups of conical heads 22 are fixedly installed on the outer surface of the rolling cylinder 21. When the feed rack 1 is conveying aggregates, the material spreading rack 8 can be used in conjunction with the rolling cylinder 21 to roll the aggregates, and the conical heads 22 can crush the aggregates when the rolling cylinder 21 rotates, thereby crushing the blocky aggregates and improving the screening effect.

[0043] like Figure 4As shown, spring rods 19 used in conjunction with docking rods 23 are movably installed on the inner surfaces of both ends of the material spreading rack 8, and both ends of the docking rods 23 and the lower ends of the spring rods 19 are movably connected via a rotating shaft seat 20. The spring rods 19 are used in conjunction with the rotating shaft seat 20 to allow the rolling cylinder 21 and the docking rods 23 to have an elastic rolling structure. Pressure is applied to the rolling cylinder 21 and the docking rods 23 through the spring rods 19, so that the rolling cylinder 21 performs an elastic rolling operation on the aggregate on the conveyor belt 9.

[0044] A discharge nozzle 3 is fixedly installed at the end and side of the screening box 2, and a sloped baffle 24 is installed at the upper position of one end of the discharge nozzle 3, and a spray rack 25 is fixedly installed on the inner side of the sloped baffle 24. When the discharge nozzle 3 performs the discharge operation of aggregate, the spray rack 25 of the sloped baffle 24 can spray water mist, thereby reducing the dust of the aggregate.

[0045] like Figure 5 As shown, a vibrating plate 27 is movably installed at the rear end of the discharge nozzle 3, and the vibrating plate 27 is movably installed below the screen 6. A driving roller 26 is arranged at the lower part of the vibrating plate 27. The driving roller 26 has an elliptical structure as a whole. The vibrating plate 27 and the screening box 2 are movably connected by a docking shaft 30. The driving roller 26 is driven by a motor, so that the elliptical driving roller 26 drives the vibrating plate 27 to bump up and down when rotating, so that the vibrating plate 27 discharges aggregates on its surface during the vibration process.

[0046] like Figure 6 As shown, a tension spring 29 is provided at one end of the buffer 10, and the buffer 10 and the vibration frame 12 are elastically connected through the tension spring 29. The tension spring 29 is used to make the buffer 10 and the vibration frame 12 an elastic buffer structure, thereby preventing the vibration frame 12 from transmitting the vibration to the screening box 2, thereby playing a buffering and protective role.

[0047] The buffer 10 and the screening box 2 are fixedly connected by a fastening bolt 28, and both ends of the tension spring 29 are fixed by a hanging ring.

[0048] When in use, traditional equipment uses a screen structure to complete the screening of aggregates by vibration, but it is impossible to control the retention time of aggregates on the screen, making it easy for aggregates to be mixed and discharged, and it is impossible to flexibly adjust the size of the screen and cannot flexibly apply to the screening operation of aggregates of different specifications;

[0049] To this end, by providing the first rotating rod 11, the second rotating rod 15 and the screen 6, when the aggregate screening device for concrete production is used, the retention time of the aggregate during screening can be flexibly controlled, and the size of the screen 6 can be flexibly adjusted to improve the aggregate screening effect;

[0050] During operation, the screen 6 can be used in two ways on the vibration frame 12 in conjunction with the first rotating rod 11 and the second rotating rod 15. Figure 7 In the form shown in A, at this time, the two ends of the screen 6 are respectively fixed on the first rotating rod 11 and the second rotating rod 15. The user uses the conveyor belt 9 on the feeding frame 1 to transport the aggregate to the inside of the screening box 2, and the two ends of the screen 6 are respectively wound on the first rotating rod 11 or the second rotating rod 15. At this time, the screen 6 with several groups of mesh holes can be installed, and the position of the screen 6 is adjusted by rotating the first rotating rod 11 or the second rotating rod 15, thereby adjusting the mesh area to achieve the screening operation of aggregates of different sizes. The second method is as follows Figure 7 In the form shown in B, at this time, the two ends of the screen 6 are butted against each other, and the first rotating rod 11 and the second rotating rod 15 are sleeved on the inner side of the screen 6. The rotation of the first rotating rod 11 or the second rotating rod 15 can be controlled by a motor. When the first rotating rod 11 or the second rotating rod 15 rotates, the screen 6 can be driven to move, so that the screen 6 moves in the opposite direction of the movement of the aggregate. When the first rotating rod 11 and the second rotating rod 15 rotate, the screen 6 can be driven to move in a circular manner. When the aggregate is placed on the upper surface of the screen 6, the retention time of the aggregate on the screen 6 can be increased, thereby improving its screening effect, avoiding the aggregate from being discharged from the discharge nozzle 3 without being fully screened, and improving the aggregate screening effect.

[0051] Traditional equipment only has a single aggregate conveying structure. Aggregates will clump after long-term storage. Vibrating screens cannot completely disperse the agglomerated aggregates, which affects the screening effect.

[0052] To this end, by setting the material spreading frame 8, when the aggregate screening device for concrete production is used, it has a rolling auxiliary structure, which can complete the pretreatment of the agglomerated aggregate during the feeding process and improve the subsequent screening effect of the aggregate;

[0053] When in use, the conveying operation of aggregates can be completed by utilizing the conveyor belt 9 of the feed frame 1. When the feed frame 1 is conveying aggregates, the material spreading frame 8 can be used in conjunction with the rolling cylinder 21 to roll the aggregates, and the conical head 22 can crush the aggregates when the rolling cylinder 21 rotates, thereby crushing the blocky aggregates and improving the screening effect. Secondly, the spring rod 19 is used in conjunction with the rotating shaft seat 20 to make the rolling cylinder 21 and the docking rod 23 have an elastic rolling structure. Pressure is applied to the rolling cylinder 21 and the docking rod 23 through the spring rod 19, so that the rolling cylinder 21 performs an elastic rolling operation on the aggregates on the conveyor belt 9.

[0054] At the same time, the above equipment is prone to dust when discharging aggregates, which affects the working environment. It does not have a buffering noise reduction structure, and the vibration screening noise is relatively large, which affects its use effect.

[0055] To this end, by providing the inclined guide plate 18 and the spray rack 25, when the aggregate screening device for concrete production is used, it has a dust protection structure to avoid dust from occurring during the aggregate screening and discharging process, thereby improving its working environment.

[0056] During operation, when the discharge nozzle 3 performs the aggregate discharge operation, firstly, the spray frame 25 of the inclined baffle plate 24 can spray water mist, thereby reducing the dust of the aggregate. Secondly, the two groups of inclined guide plates 18 arranged in an eight-shaped structure can play a buffering role when the aggregate falls into the receiving box 5, so that the aggregate is discharged from the groove between the two groups of inclined guide plates 18, avoiding the dust of the aggregate during the dropping process.

[0057] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An aggregate screening device for concrete production, characterized in that: The invention comprises a material conveying frame (1), a material screening box (2) and a docking card seat (4), wherein the material conveying frame (1) is fixedly mounted on the outer surface of one end of the material screening box (2), the docking card seat (4) is fixedly mounted on the outer surface of the other end of the material screening box (2), a screen (6) is movably mounted on the inner side of the material screening box (2), the material screening box (2) and the screen (6) are connected and fixed by a vibration frame (12), and a vibration frame (12) is movably mounted on the lower part of one end of the vibration frame (12) so as to cooperate with the screen (6) so as to enable the screen (6) to be moved. The vibration frame (12) is provided with a first rotating rod (11) for use, and a second rotating rod (15) for use with a screen (6) is movably installed at the lower part of the other end of the vibration frame (12). The first rotating rod (11) and the second rotating rod (15) are symmetrically arranged. The vibration frame (12) and the screening box (2) are connected and fixed by a buffer (10); a material receiving box (5) is spliced ​​and installed on the inner side of the docking seat (4), and a material spreading frame (8) is fixedly installed on the outer surface of the upper end of the feeding frame (1).

2. An aggregate screening device for concrete production according to claim 1, characterized in that: A plurality of groups of support rods (13) are movably mounted on the inner side of the vibration frame (12), and a rolling brush rod (14) is movably mounted between two groups of support rods (13) in the vibration frame (12), and both the support rod (13) and the rolling brush rod (14) are in contact with the lower surface of the screen (6).

3. The aggregate screening device for concrete production according to claim 1, characterized in that: A transmission frame (16) is fixedly mounted on the outer surface of one end of the vibration frame (12), and a vibrator (17) is fixedly mounted at the middle position of the outer surface of the transmission frame (16). The vibration frame (12) is a rectangular frame structure as a whole, and a plurality of groups of mesh holes are provided on the surface of the screen (6).

4. The aggregate screening device for concrete production according to claim 1, characterized in that: Two groups of inclined guide plates (18) are fixedly mounted on the outer surface of the upper end of the material receiving box (5), and the two groups of inclined guide plates (18) are arranged in an "eight" shape. A side rotary cover plate (7) is movably mounted on the upper end of the material screening box (2).

5. The aggregate screening device for concrete production according to claim 1, characterized in that: A rolling cylinder (21) is movably mounted on the inner side of the material spreading rack (8), the material spreading rack (8) and the rolling cylinder (21) are movably connected via a docking rod (23), and a plurality of groups of conical heads (22) are fixedly mounted on the outer surface of the rolling cylinder (21).

6. The aggregate screening device for concrete production according to claim 5, characterized in that: The inner surfaces of both ends of the material spreading rack (8) are movably mounted with spring rods (19) used in conjunction with the docking rods (23), and both ends of the docking rods (23) and the lower ends of the spring rods (19) are movably connected via a rotating shaft seat (20).

7. The aggregate screening device for concrete production according to claim 1, characterized in that: The end and side of the screening box (2) are fixedly mounted with a discharge nozzle (3), and an inclined baffle (24) is mounted at the upper position of one end of the discharge nozzle (3), and a spray frame (25) is fixedly mounted on the inner side of the inclined baffle (24).

8. The aggregate screening device for concrete production according to claim 7, characterized in that: A vibrating disc (27) is movably mounted at the rear end of the discharge nozzle (3), and the vibrating disc (27) is movably mounted below the screen (6). A driving roller (26) is disposed below the vibrating disc (27), and the driving roller (26) is of an elliptical structure as a whole.

9. The aggregate screening device for concrete production according to claim 1, characterized in that: A tension spring (29) is provided at one end of the buffer (10), and the buffer (10) and the vibration frame (12) are elastically connected via the tension spring (29).

10. An aggregate screening device for concrete production according to claim 9, characterized in that: The buffer (10) and the screening box (2) are fixedly connected via a fastening bolt (28), and both ends of the tension spring (29) are butt-jointed and fixed via hanging rings.

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