A sand and gravel mixing device

Abstract

The present invention relates to the technical field of sand and gravel mixing, and discloses a sand and gravel mixing device, which includes a mixing tank. Legs are fixedly connected to the bottom of the mixing tank. A discharge hole is opened on the lower surface of the mixing tank. A storage rack is fixedly connected to the surface of the mixing tank. A motor is fixedly connected to the bottom of the mixing tank. A dispersing component is arranged inside the mixing tank. A stirring component is arranged below the dispersing component. A material pushing component is arranged inside the mixing tank. After the sand and gravel are placed into the interior of the conical hole frame in the present invention, the motor is started to drive the rotating rod to rotate. When the rotating rod rotates, the scraper is driven to rotate through the positioning ring. The scraper is used to stir the sand and gravel to rotate inside the conical hole frame to disperse the sand and gravel, so as to avoid the agglomeration of wet sand and gravel, which affects the mixing effect. When the rotating rod rotates, the separation plate is driven by the dispersing frame to impact the sand and gravel, improving the dispersing efficiency of the sand and gravel.

Description

Technical Field

[0001] The present invention relates to the technical field of sand and gravel mixing, and specifically relates to a sand and gravel mixing device. Background Art

[0002] Sand and gravel refers to a loose mixture of sand grains and gravel. Geologically, mineral or rock particles with a particle size of 0.074 - 2 mm are called sand, and those with a particle size greater than 2 mm are called gravel or angular gravel. Due to its good hardness and stable chemical properties, sand and gravel are often widely used as high-quality building materials and concrete raw materials in fields such as houses, roads, highways, railways, and engineering.

[0003] Before sand and gravel are mixed, they need to be screened. After screening, the sand and gravel need to be piled up together waiting for mixing and processing. However, after the sand and gravel are piled up for a long time, they are prone to condense together due to moisture, and the condensed sand and gravel are likely to affect the mixing effect of the sand and gravel. When the existing sand and gravel mixing devices mix sand and gravel, it is difficult to completely break up the condensed sand and gravel by stirring, resulting in poor mixing efficiency of the sand and gravel.

[0004] The Chinese patent application with the publication number CN112173757A discloses a device for screening and drying building sand and gravel materials, which directly heats the sand and gravel raw materials with a resistance heater to evaporate and discharge the internal moisture. Although it can break up the condensed sand and gravel, the working efficiency is low and heat waste is easy to occur.

[0005] Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0006] The purpose of the present invention is to provide a sand and gravel mixing device to solve the problems raised in the above background art.

[0007] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0008] A sand and gravel mixing device includes a mixing tank. There is a feed port at the upper end of the mixing tank, a discharge hole at one side of the lower end, and legs are fixedly arranged at the bottom. A motor is fixedly arranged at the bottom of the mixing tank, and the motor shaft of the motor is fixedly connected to a rotating rod. The rotating rod is located inside the mixing tank and penetrates through a sieve hole frame, a mixing component, and a dispersing component arranged in the mixing tank from bottom to top in sequence. A pushing component is arranged on the sieve hole frame.

[0009] The dispersing assembly includes a conical hole frame, a positioning ring, and a limiting ring. The outer edge of the conical hole frame is fixedly connected to the inner side surface of the mixing tank. The limiting ring and the positioning ring are both fixedly arranged on the rotating rod. A plurality of scraping plates are hinged to the positioning ring along the circumferential direction, and the upper ends of the scraping plates are connected to the limiting ring through connecting plates.

[0010] The pushing component includes an inclined plate and a movable plate, the sieve frame is fixedly arranged on the mixing tank, a groove is arranged on one side of the upper end surface of the sieve frame, and an opening and a storage rack corresponding to the groove are arranged on the side wall of the mixing tank; a positioning hole connected to the groove is arranged on the inner side of the sieve frame, an inclined plate is slidably arranged in the groove, a movable plate fixedly connected to the inclined plate is slidably arranged in the positioning hole, a baffle is arranged at the upper end of the groove, a leak hole connected to the groove is arranged on the baffle, and a bending portion matching the opening is arranged on the side of the baffle close to the opening;

[0011] The rotating rod is also provided with a driving mechanism for pushing the moving plate to slide along the positioning hole.

[0012] Preferably, the bottom of the movable plate is fixedly connected to a force-bearing plate, the bottom of the force-bearing plate is fixedly connected to a spring sheet, the end of the spring sheet away from the force-bearing plate is fixedly connected to the bottom of the sieve frame, the surface of the rotating rod is fixedly connected to an extrusion frame, and one side of the extrusion frame is fixedly connected to an arc plate that intermittently contacts the force-bearing plate.

[0013] Preferably, the bent plate is fixedly arranged at the bottom of the extrusion frame, and a push plate is fixedly connected to the bottom of the bent plate, and the push plate is in contact with the inner bottom surface of the mixing tank.

[0014] Preferably, the stirring component includes a rotating ring, which is fixedly connected to the rotating rod and rotatably connected to the inner wall of the conical hole frame, a fixed plate is fixedly connected to the side of the rotating ring, a scraper plate is fixedly connected to the bottom of the fixed plate, and the lower side of the scraper plate contacts the upper end surface of the sieve frame.

[0015] Preferably, a plurality of the fixing plates are evenly distributed along the circumference of the rotating ring, and a separation block is provided on the upper end of the fixing plate.

[0016] Preferably, the connecting plate is a spring plate, and a slope is provided on one side of the scraper along the rotation direction.

[0017] Preferably, a breaking frame is fixedly connected between the positioning ring and the limiting ring, a separation plate is fixedly connected to the outer side of the breaking frame, and the rotation radius of the separation plate is smaller than that of the scraper.

[0018] Preferably, the upper end surface of the inclined plate is inclined downward along a side away from the opening, and the bottom of the inclined plate is in contact with the inner bottom of the groove;

[0019] Slide grooves are arranged on both sides of the groove, and sliding plates are fixedly connected on both sides of the inclined plate, and the sliding plates are slidably connected with the slide grooves.

[0020] Preferably, a hot air pipe is arranged in the fixed plate, an air supply pipe connected to the hot air pipe is arranged in the rotating rod, and the air supply pipe is connected to the hot air generator through a rotating joint arranged at the lower end of the rotating rod;

[0021] A plurality of air outlets are arranged on one side of the fixing plate away from the rotating direction, and the air outlets are provided with dustproof nets.

[0022] The beneficial effects of the present invention compared with the prior art are as follows:

[0023] After the sand and gravel are placed inside the conical hole frame in the present invention, the motor is started to drive the rotating rod to rotate. When the rotating rod rotates, it drives the scraper to rotate through the positioning ring. The scraper is used to stir the sand and gravel to rotate inside the conical hole frame to disperse the sand and gravel, avoiding the agglomeration of wet sand and gravel and affecting the mixing effect. When the rotating rod rotates, it impacts the sand and gravel through the dispersing frame and the separation plate, improving the dispersing efficiency of the sand and gravel. After being dispersed, the sand and gravel will enter the inside of the mixing tank through the conical hole frame for mixing treatment.

[0024] After the sand and gravel in the present invention pass through the conical hole frame, they will fall above the sieve hole frame. The rotating ring drives the fixed plate to rotate through the rotation of the rotating rod. When the fixed plate rotates, it drives the sand and gravel to roll on the top of the sieve hole frame through the scraping plate to mix the sand and gravel. When the fixed plate rotates, it drives the separation block to push the sand and gravel for extrusion, using the separation block to perform extrusion and separation treatment on the sand and gravel, avoiding the accumulation of sand and gravel inside the mixing tank and affecting the mixing effect.

[0025] When the rotating rod rotates in the present invention, it drives the force-bearing plate to move through the extrusion frame. When the force-bearing plate moves, it drives the inclined panel to move inside the groove through the moving plate. After the mixing of the sand and gravel is completed, the qualified sand and gravel will fall to the bottom of the inner wall of the mixing tank through the sieve hole frame. Some larger sand and gravel will enter the inside of the groove through the leakage holes. When the inclined panel moves, it pushes the larger sand and gravel into the storage frame for collection. When the inclined panel retracts through the elastic piece, it will shovel up the sand and gravel inside the groove and return them above the sieve hole frame. At this time, the sand and gravel that fall into the groove will also be screened through the sieve hole frame. When the extrusion frame rotates, it drives the pushing plate to rotate through the bent plate. When the pushing plate rotates, it can push the mixed sand and gravel out of the mixing tank for collection treatment.

[0026] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic cross-sectional structure diagram of the mixing tank of the present invention;

[0030] Figure 3 Schematic diagram of the overall structure of the dispersing component of the present invention;

[0031] Figure 4 Another schematic diagram of the dispersing component of the present invention;

[0032] Figure 5 Schematic diagram of the overall structure of the stirring component of the present invention;

[0033] Figure 6 Schematic diagram of the overall structure of the pusher component of the present invention;

[0034] Figure 7 of the present invention Figure 6 Enlarged schematic diagram of part A in.

[0035] In the drawings, the components represented by each reference numeral are listed as follows:

[0036] In the figure: 1 - mixing tank, 2 - discharge hole, 3 - support leg, 4 - storage rack, 5 - motor, 6 - dispersing assembly, 7 - stirring component, 8 - pusher component, 10 - rotating rod, 11 - positioning ring, 12 - connecting plate, 13 - conical hole frame, 14 - limiting ring, 15 - scraping plate, 16 - dispersing frame, 18 - separation plate, 20 - rotating ring, 21 - separation block, 22 - sieve hole frame, 23 - fixing plate, 24 - scraping plate, 30 - extrusion frame, 31 - stress plate, 32 - sliding plate, 33 - elastic sheet, 34 - bent plate, 35 - pusher plate, 36 - inclined panel, 37 - moving plate, 38 - groove, 39 - baffle, 40 - positioning hole, 41 - leakage hole, 42 - sliding groove, 43 - rotary joint, 44 - air outlet. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figures 1-7 As shown, a sand and gravel mixing device includes a mixing tank 1. An inlet for feeding is provided at the upper end of the mixing tank 1, a discharge hole 2 is provided at one side of the lower end, support legs 3 are fixedly provided at the bottom, a motor 5 is fixedly provided at the bottom of the mixing tank 1, and a motor shaft of the motor 5 is fixedly connected to a rotating rod 10. The rotating rod 10 is located inside the mixing tank 1. By driving the rotating rod 10 to rotate through the motor 5, the working components provided on the rotating rod 10 are driven to rotate.

[0039] The mixing tank 1 is provided with a sieve frame 22, a stirring component 7 and a breaking component 6 from bottom to top, and the rotating rod 10 passes through the sieve frame 22, the stirring component 7 and the breaking component 6. The breaking component 6 is used to initially break up the coagulated sand and gravel, and the stirring component 7 is used to cooperate with the sieve frame 22 to screen out qualified sand and gravel.

[0040] Specifically, the breaking up assembly 6 includes a conical hole frame 13, a positioning ring 11 and a limiting ring 14. The outer edge of the conical hole frame 13 is fixedly connected to the inner side of the mixing tank 1. The limiting ring 14 and the positioning ring 11 are fixedly arranged on the rotating rod 10. The positioning ring 11 is hinged with a plurality of scrapers 15 along the circumferential direction. The upper end of the scraper 15 is connected to the limiting ring 14 through a connecting plate 12. Preferably, the connecting plate 12 is a spring plate, and a slope is arranged on one side of the scraper 15 along the rotation direction. When the scraper 15 works normally, the outer side surface of the scraper 15 fits with the inner side surface of the conical hole frame 13, pushing the raw materials in the conical hole frame 13 to move along the conical hole frame 13 to achieve screening. When the scraper 15 encounters a jam, since the connecting plate 12 is compressible, the scraper 15 can use the slope to overcome the jam to avoid machine failure.

[0041] In order to improve the breaking up effect, a breaking up frame 16 is fixedly connected between the positioning ring 11 and the limiting ring 14, and a separation plate 18 is fixedly connected to the outer side of the breaking up frame 16. The rotation radius of the separation plate 18 is smaller than the rotation radius of the scraper 15. By setting breaking up components with different rotation radii, the breaking up effect can be significantly improved.

[0042] The sieve frame 22 is fixedly arranged in the mixing tank 1, and the stirring component 7 includes a rotating ring 20, which is fixedly connected to the rotating rod 10 and rotatably connected to the inner wall of the conical hole frame 13. A fixed plate 23 is fixedly connected to the side of the rotating ring 20, and a scraper plate 24 is fixedly connected to the bottom of the fixed plate 23. The lower side of the scraper plate 24 contacts the upper end surface of the sieve frame 22. The sand and gravel are pushed to move by the scraper plate 24, and the sand and gravel that meet the particle size are screened out in cooperation with the sieve frame 22. Preferably, a plurality of fixed plates 23 are evenly distributed along the circumference of the rotating ring 20, and a separation block 21 is arranged on the upper end of the fixed plate 23, and the sand and gravel are further separated by the separation block 21.

[0043] In order to prevent the sand and gravel from condensing again, a hot air pipe is provided in the fixed plate 23, and an air supply pipe connected to the hot air pipe is provided in the rotating rod 10. The air supply pipe is connected to a hot air generator through a rotating joint 43 provided at the lower end of the rotating rod 10. The hot air generator supplies air, and heat is transported to the air outlet 44 through the rotating joint 43, the air supply pipe, and the hot air pipe. The air outlet 44 is provided on the side of the fixed plate 23 away from the rotation direction, and a dustproof net is provided on the outside of the air outlet 44 to prevent blockage by sand and gravel.

[0044] In order to discharge the sand and gravel with a particle size larger than the sieve hole frame 22, a pushing member 8 is provided on the sieve hole frame 22. Specifically, the pushing member 8 includes an inclined panel 36 and a moving plate 37. A groove 38 is provided on one side of the upper end surface of the sieve hole frame 22. An opening corresponding to the groove 38 and a storage rack 4 are provided on the side wall of the mixing tank 2. The opening is used to discharge the sand and gravel, and the storage rack 4 is used to temporarily store the sand and gravel that does not meet the particle size. A positioning hole 40 communicating with the groove 38 is provided inside the sieve hole frame 22. The inclined panel 36 is slidably arranged in the groove 38, and the moving plate 37 fixedly connected to the inclined panel 36 is slidably arranged in the positioning hole 40. A driving mechanism for pushing the moving plate 37 to slide along the positioning hole 40 is provided on the rotating rod 10, and the inclined panel 36 is driven to move by the moving plate 37.

[0045] The upper end surface of the inclined panel 36 slopes downward along the side away from the opening. The bottom of the inclined panel 36 contacts the inner bottom of the groove 38, so that when the inclined panel 36 moves towards the rotating rod 10, the sand and gravel in the groove 38 can be shoveled up. Chute grooves 42 are provided on both sides of the groove 38. Sliding plates 32 are fixedly connected to both sides of the inclined panel 36, and the sliding plates 32 are slidably connected to the chute grooves 42.

[0046] A baffle 39 is provided at the upper end of the groove 38. A leakage hole 41 communicating with the groove 38 is provided on the baffle 39. The sand and gravel with a larger particle size enters the groove 38 through the leakage hole 41. A bent portion cooperating with the opening is provided on the side of the baffle 39 close to the opening, and the un-screened sand and gravel are prevented from being directly discharged through the bent portion.

[0047] In order to drive the moving plate 37 to move, a force-bearing plate 31 is fixedly connected to the bottom of the moving plate 37. A spring piece 33 is fixedly connected to the bottom of the force-bearing plate 31. One end of the spring piece 33 away from the force-bearing plate 31 is fixedly connected to the bottom of the sieve hole frame 22, and the automatic reset of the force-bearing plate 31 is realized through the spring piece 33. An extrusion frame 30 is fixedly connected to the surface of the rotating rod 10, and an arc-shaped plate that intermittently contacts the force-bearing plate 31 is fixedly connected to one side of the extrusion frame 30.

[0048] A bent plate 34 is fixedly arranged at the bottom of the extrusion frame 30. A pushing plate 35 is fixedly connected to the bottom of the bent plate 34, and the pushing plate 35 is attached to the inner bottom surface of the mixing tank 1. When the extrusion frame 30 rotates with the rotating rod 10, the pushing plate 35 is driven to rotate and the sand and gravel are pushed out of the mixing tank 1.

[0049] During use, after putting sand and gravel into the inside of the conical hole frame 13, start the motor 5 to drive the rotating rod 10 to rotate. When the rotating rod 10 rotates, it drives the scraper 15 to rotate through the positioning ring 11. The scraper 15 is used to stir the sand and gravel to rotate inside the conical hole frame 13 to break up the sand and gravel, so as to avoid the damp sand and gravel from coagulating together and affecting the mixing effect. When the rotating rod 10 rotates, it drives the separating plate 18 to impact the sand and gravel through the dispersing frame 16, improving the dispersing efficiency of the sand and gravel. After being dispersed, the sand and gravel will enter the inside of the mixing tank 1 through the conical hole frame 13 for mixing treatment. After passing through the conical hole frame 13, the sand and gravel will fall above the sieve hole frame 22. The rotating ring 20 drives the fixed plate 23 to rotate through the rotation of the rotating rod 10. When the fixed plate 23 rotates, it drives the sand and gravel to roll on the top of the sieve hole frame 22 through the scraping plate 24 for mixing treatment. When the fixed plate 23 rotates, it drives the separating block 21 to push the sand and gravel for extrusion, and uses the separating block 21 to perform extrusion separation treatment on the sand and gravel, so as to avoid the sand and gravel from accumulating inside the mixing tank 1 and affecting the mixing effect. When the rotating rod 10 rotates, it pushes the force-bearing plate 31 to move through the extrusion frame 30. When the force-bearing plate 31 moves, it drives the inclined panel 36 to move inside the groove 38 through the moving plate 37. After the sand and gravel are mixed, the qualified sand and gravel will fall to the bottom of the inner wall of the mixing tank 1 through the sieve hole frame 22. Some larger sand and gravel will enter the inside of the groove 38 through the leakage holes 41. When the inclined panel 36 moves, the larger sand and gravel will fall into the inside of the storage rack 4 for collection. When the inclined panel 36 retracts through the elastic piece 33, it will shovel up the sand and gravel inside the groove 38. At this time, the sand and gravel that fall into the inside of the groove 38 will also be screened again through the sieve hole frame 22. When the extrusion frame 30 rotates, it drives the pushing plate 35 to rotate through the bent plate 34. When the pushing plate 35 rotates, it can push the mixed sand and gravel out of the mixing tank 1 for collection treatment.

[0050] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A sand and gravel mixing device, comprising a mixing tank (1), wherein the mixing tank (1) is provided with a feed inlet at the upper end, a discharge hole (2) at one side of the lower end, and a support leg (3) fixedly provided at the bottom, characterized in that: A motor (5) is fixedly arranged at the bottom of the stirring tank (1); a motor shaft of the motor (5) is fixedly connected to a rotating rod (10); the rotating rod (10) is located in the stirring tank (1) and passes through a sieve frame (22), a stirring component (7) and a dispersing component (6) which are arranged in sequence from bottom to top in the stirring tank (1); a material pushing component (8) is arranged on the sieve frame (22); The dispersing component (6) comprises a conical hole frame (13), a positioning ring (11) and a limiting ring (14); the outer edge of the conical hole frame (13) is fixedly connected to the inner side of the mixing tank (1); the limiting ring (14) and the positioning ring (11) are both fixedly arranged on the rotating rod (10); the positioning ring (11) is hinged with a plurality of scrapers (15) along the circumferential direction; the upper ends of the scrapers (15) are connected to the limiting ring (14) via a connecting plate (12); The pushing member (8) comprises an inclined plate (36) and a movable plate (37); the sieve frame (22) is fixedly arranged on the stirring tank (1); a groove (38) is arranged on one side of the upper end surface of the sieve frame (22); an opening corresponding to the groove (38) and a storage rack (4) are arranged on the side wall of the stirring tank (1); a positioning hole (40) communicating with the groove (38) is arranged on the inner side of the sieve frame (22); an inclined plate (36) is slidably arranged in the groove (38); a movable plate (37) fixedly connected to the inclined plate (36) is slidably arranged in the positioning hole (40); a baffle (39) is arranged at the upper end of the groove (38); a leak hole (41) communicating with the groove (38) is arranged on the baffle (39); and a bending portion cooperating with the opening is arranged on a side of the baffle (39) close to the opening; The rotating rod (10) is also provided with a driving mechanism for pushing the moving plate (37) to slide along the positioning hole (40); The bottom of the movable plate (37) is fixedly connected to a force-bearing plate (31), the bottom of the force-bearing plate (31) is fixedly connected to a spring sheet (33), one end of the spring sheet (33) away from the force-bearing plate (31) is fixedly connected to the bottom of the sieve frame (22), the surface of the rotating rod (10) is fixedly connected to an extrusion frame (30), and one side of the extrusion frame (30) is fixedly connected to an arc-shaped plate that intermittently contacts the force-bearing plate (31); The bent plate (34) is fixedly arranged at the bottom of the extrusion frame (30), and a push plate (35) is fixedly connected to the bottom of the bent plate (34), and the push plate (35) is in contact with the inner bottom surface of the mixing tank (1); The stirring component (7) comprises a rotating ring (20), the rotating ring (20) being fixedly connected to the rotating rod (10) and rotatably connected to the inner wall of the conical hole frame (13), a fixed plate (23) being fixedly connected to the side of the rotating ring (20), a scraping plate (24) being fixedly connected to the bottom of the fixed plate (23), and the lower side of the scraping plate (24) being in contact with the upper end surface of the sieve hole frame (22).

2. A sand and gravel mixing device according to claim 1, characterized in that: A plurality of the fixing plates (23) are evenly distributed along the circumference of the rotating ring (20), and a separation block (21) is provided at the upper end of the fixing plate (23).

3. A sand and gravel mixing device according to claim 1, characterized in that: The connecting plate (12) is a spring plate, and one side of the scraper (15) is provided with an inclined surface along the rotation direction.

4. A sand and gravel mixing device according to claim 1, characterized in that: A disassembly frame (16) is fixedly connected between the positioning ring (11) and the limiting ring (14), and a separation plate (18) is fixedly connected to the outside of the disassembly frame (16). The rotation radius of the separation plate (18) is smaller than that of the scraper (15).

5. A sand and gravel mixing device according to claim 1, characterized in that: The upper end surface of the inclined plate (36) is inclined downward along a side away from the opening, and the bottom of the inclined plate (36) is in contact with the inner bottom of the groove (38); Slide grooves (42) are provided on both sides of the groove (38), and sliding plates (32) are fixedly connected to both sides of the inclined plate (36), and the sliding plates (32) are slidably connected to the slide grooves (42).

6. A sand and gravel mixing device according to claim 1, characterized in that: A hot air pipe is arranged in the fixed plate (23), an air supply pipe connected to the hot air pipe is arranged in the rotating rod (10), and the air supply pipe is connected to the hot air generator via a rotating joint (43) arranged at the lower end of the rotating rod (10); A plurality of air outlets (44) are provided on a side of the fixed plate (23) facing away from the rotation direction, and the air outlets (44) are provided with dustproof nets.

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