Environmentally friendly concrete preparation system, process and application thereof

Abstract

The present invention relates to the technical field related to concrete preparation, and discloses an environmentally friendly concrete preparation system, process and application thereof. The system includes a bracket and a mixing shell fixed on the bracket, a driving unit is arranged on the upper side of the mixing shell, and a feeding unit is also fixedly arranged on the upper side of the mixing shell, the mixing shell includes an outer cone barrel, an inner cone barrel is arranged inside the outer cone barrel, a through hole is opened in the center of the upper cover of the inner cone barrel, a lower shaft is rotatably arranged in the through hole, the lower shaft extends downward into the inner cavity of the inner cone barrel, and a rotating stirring assembly is swingably arranged on the side of the lower shaft, and a longitudinal stirring assembly is arranged at the bottom of the lower shaft, the inclination angle of the stirring blade can be adjusted during the rotation process, and the longitudinal swinging piece that can be deployed is used to guide the cement to flow upward along the stirring blade, and the bottom material is drained to the top, and the longitudinal swinging piece will swing upward synchronously, and the coarse aggregate enters the action space of the stirring blade and is further pushed upward by the stirring blade for full fusion.

Description

Technical Field

[0001] The present invention belongs to the technical field related to concrete preparation, and more specifically, relates to an environmentally friendly concrete preparation system, process and application thereof. Background Art

[0002] The preparation of concrete requires the preparation of a variety of materials, including cement, sand, aggregate and water. Among them, cement is the key material of concrete, which provides the adhesion of concrete. Sand is used for the core that is easy to move with each other, and aggregate is used to increase the strength of concrete. Water is the most important ingredient in the concrete preparation process. It not only makes the concrete flow, but also triggers chemical reactions in cement and sand to form a solid concrete body. Long-term aging of concrete is another key step in concrete preparation, which can increase the strength and durability of concrete.

[0003] The existing technology still has the following technical problems:

[0004] Mixing is an important process in the preparation of concrete. Existing mixing devices usually include a mixing chamber and a mixing assembly that can stir in the mixing chamber. Since concrete components include at least gravel, sand, cement and water, they are affected by density. High-density aggregates tend to sink. Specifically, gravel will sink to the bottom, which is not conducive to rapid mixing. In a vertical mixer, there are mixing blades that rotate along a vertical axis. The mixing blades in existing vertical mixers cannot overcome the tendency of high-density aggregates to sink, and can only extend the mixing time to increase the uniformity of concrete.

[0005] Therefore, in view of this, the existing structure is studied and improved, and an environmentally friendly concrete preparation system, process and application thereof are provided, in order to achieve a more practical purpose. Summary of the Invention

[0006] The present invention provides an environmentally friendly concrete preparation system, process and application thereof, which are used to overcome the above-mentioned defects in the prior art.

[0007] The objectives and effects of the environmentally friendly concrete preparation system, process, and application thereof of the present invention are achieved by the following specific technical means:

[0008] The present invention provides an environmentally friendly concrete preparation system comprising a bracket and a mixing shell fixed on the bracket, a driving unit is arranged on the upper side of the mixing shell, a feeding unit is also fixedly arranged on the upper side of the mixing shell, the mixing shell comprises an outer cone barrel, an inner cone barrel is arranged inside the outer cone barrel, a plurality of elastic convex bodies are arranged on the inner wall of the outer cone barrel, a plurality of agitation grooves are provided on the side of the inner cone barrel facing the outer cone barrel, an elastically deformable cone panel is arranged on the inner wall of the inner cone barrel, the cone panel covers the inner surface of the agitation groove, the elastic convex bodies protrude toward the agitation groove, the inner cone barrel moves up and down in the outer cone barrel, an elastic elastic sealing ring is fixedly arranged on the upper side of the inner cone barrel, the elastic sealing ring and the inner wall of the outer cone barrel form a sealed annular water injection groove, the upper surface of the inner cone barrel The cover is also circumferentially distributed with a number of liquid spray nozzles for spraying liquid toward the inner wall of the inner cone barrel, the liquid spray nozzles are connected to the annular water injection groove, a one-way valve is provided on the upper cover of the outer cone barrel, the one-way valve is connected to the annular water injection groove, a through hole is opened in the center of the upper cover of the inner cone barrel, a lower shaft is rotatably provided in the through hole, the lower shaft extends downward into the inner cavity of the inner cone barrel, and a rotating stirring assembly is swung on the side of the lower shaft, a longitudinal stirring assembly is provided at the bottom of the lower shaft, a driving unit drives the lower shaft to rotate, and the driving unit also drives the lower shaft to reciprocate longitudinally, a bottom bracket is provided at the bottom of the lower shaft, and the bottom bracket is connected to the inner cone barrel to drive the inner cone barrel to move longitudinally in the outer cone barrel to extrude the elastic sealing ring so that the liquid in the annular water injection groove is sprayed out through the liquid spray nozzle.

[0009] A further technical solution is that a coaxial through hole is provided longitudinally through the center of the inner conical barrel and the outer conical barrel, a rotating sleeve is rotatably arranged in the through hole, a lower shaft is longitudinally slidably arranged in the rotating sleeve, a center groove is provided inside the lower shaft, a first slider is longitudinally slidably arranged in the center groove, a rack is fixedly provided at the lower end of the first slider, a rotating hole is provided on the side wall of the center groove, a gear is rotatably provided in the rotating hole, the gear is engaged with the rack, one end of the gear passes through the rotating hole and is fixedly connected to the rotating stirring assembly, and the bottom of the rack is connected to the bottom bracket.

[0010] A further technical solution is that a second slider is fixedly connected to the bottom of the rack, a stirring head is set on the lower side of the second slider, a second spring is set between the second slider and the stirring head, a driving rocker arm is hinged on the side of the stirring head, a longitudinal swing piece is hinged on the bottom side of the lower shaft, the longitudinal swing piece is hinged to the driving rocker arm, and the bottom of the stirring head is fixedly connected to the bottom bracket.

[0011] A further technical solution is that the bottom of the rack is fixedly connected to the second slider, a sealing cover is fixedly arranged at the lower opening of the lower shaft, a second spring is arranged between the sealing cover and the second slider, a moving rod is fixedly arranged at the lower end of the sealing cover, the moving rod is outerly provided with a fixed sleeve, an annular frame is fixedly arranged on the outer side of the fixed sleeve, a stirring head is fixedly arranged at the lower end of the fixed sleeve, the bottom of the stirring head is fixedly connected to the bottom bracket, the stirring head has a movable groove, a driving rod is fixedly arranged at the lower end of the moving rod, the driving rod extends downward into the movable groove, a swing center axis is fixedly arranged at the center of the movable groove, a swing lever is rotatably arranged on the swing center axis, two limit shafts are longitudinally spaced on the driving rod, the swing lever is stuck between the two limit shafts, a longitudinal swing piece is hinged on the side of the annular frame, the inner side of the longitudinal swing piece is hinged to the end of the swing lever, and the swing of the swing lever can drive the two longitudinal swing pieces to swing up alternately.

[0012] A further technical solution is that the rotating stirring assembly includes a stirring blade and a connecting rod, one end of the connecting rod is fixedly connected to the stirring blade, and a rotating body is fixedly set at the part where the gear extends to the outside of the center groove. Two connecting rods are locked on the rotating body, and the axes of the two connecting rods form an angle. A sealing ring is sleeved on the outside of the rotating body, and the sealing ring is sealed and fixed on the outer wall of the lower shaft.

[0013] A further technical solution is that the driving unit includes a rotary drive assembly, which includes a first motor, a driving wheel and a passive wheel. A first bracket is fixedly installed on the upper side of the mixing shell, and a first motor is fixedly installed on the upper side of the first bracket. The shaft of the first motor is fixedly connected to the driving wheel, and a passive wheel is fixedly mounted on the outer side of the rotating sleeve, and the passive wheel is engaged with the driving wheel.

[0014] A further technical solution is that the drive unit also includes an inertia drive component, which includes an inertia drive component, a second pulley and an upper shaft. The upper shaft is rotatably arranged on the top of the lower shaft, and a power shaft is rotatably arranged on the upper end of the upper shaft. The power shaft is coaxially fixed with the second pulley, and the power shaft is biased and fixed with the inertia pulley. The upper end of the mixing shell is also fixed with a second motor, and the shaft of the second motor is fixed with a first pulley, and the first pulley and the second pulley are connected by a belt.

[0015] A further technical solution is that the feeding unit includes a feed box fixedly arranged at the upper end of the mixing shell, the feed box has a feeding port, and a screening net is fixedly arranged horizontally in the inner cavity of the feed box, and the upper covers of the outer conical barrel and the inner conical barrel are respectively provided with an outer feed trough and an inner feed trough that are interconnected, and the outer feed trough and the inner feed trough are aligned with the screening net.

[0016] A further technical solution is that an inner discharge port and an outer discharge port are respectively opened on the lower sides of the inner conical barrel and the outer conical barrel, a discharge pipe is fixedly arranged at the lower end of the outer discharge port, and the bottom bracket has a longitudinal fixed rod and three inclined support rods, the fixed rod is fixedly connected to the bottom of the stirring head, one end of the support rod is connected to the fixed rod, and the other end is fixedly connected to the inner wall of the inner discharge port, and the support rod is elastic.

[0017] An environmentally friendly concrete preparation process comprises the following steps:

[0018] S1: First, add some water and coarse aggregate into the inner cone barrel, and the driving unit drives the rotating stirring assembly to rotate for preliminary stirring;

[0019] S2: add fine aggregate, cement and the remaining proportion of water to the coarse aggregate preliminarily mixed in S1, and mix again;

[0020] S3: During the stirring process in S2, the inertial drive assembly is activated to enable the lower shaft to move up and down, and the lower shaft drives the rotating stirring assembly to move longitudinally to increase the volume of the stirring action;

[0021] S4: The inertial drive assembly drives the longitudinal mixing assembly to move, and the longitudinal mixing assembly swings back and forth, pushing the coarse aggregate at the bottom of the inner cone barrel upward and sending it into the rotating mixing action space of the rotating mixing assembly. The coarse aggregate that has settled at the bottom can move upward and spiral downward again under the stirring of the rotating mixing assembly. While the various components of the concrete reciprocate longitudinally in the mixing space, they can be rotated by the rotating mixing assembly, thereby enhancing the uniform distribution effect of the various components of the concrete.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In an environmentally friendly concrete preparation system of the present invention, by providing a tiltable mixing blade and an expandable longitudinal swing piece, as the lower shaft rotates and moves longitudinally, the mixing blade cooperates with the longitudinal swing piece, and as the lower shaft moves downward, the mixing blade tilts to guide the cement to flow upward along the mixing blade, and the bottom mixing blade swings upward to push the bottom material upward to the mixing blade action area, thereby achieving the effect of guiding the bottom aggregate upward, and after the aggregate is drained to the top of the mixing blade, it will naturally fall and return to its position under the action of gravity, and the high-density aggregate can be longitudinally Reciprocating circulation flow; with the cooperation of the mixing blades and the longitudinal swing blades, the bottom material is pushed upward by the longitudinal swing blades. Due to the small volume of the bottom vertebral body, the material will be pushed to the center of the mixing blades. Under the centrifugal effect, these pushed-up materials will move around. The material at the periphery has a high linear velocity and a good mixing effect. The peripheral material will be further guided by the mixing blades to flow upward, thereby forming a flow direction spreading from the center to the surroundings in the working area of ​​the mixing blades. The coarse aggregate gathered at the bottom will be evenly scattered, which increases the mixing effect, reduces the probability of coarse aggregate sinking to the bottom, and improves the mixing effect.

[0024] As the inclination angle of the mixing blade changes in real time, the longitudinal flow distance of the material decreases and the lateral flow distance increases, changing the flow direction and flow velocity of the material. For the longitudinal flow component velocity, it can change periodically from small to large and then from large to small. The material changes in two dimensions: direction and speed. Different aggregates have different inertia. The direction and speed of materials with large inertia are difficult to change, while materials with small inertia are more likely to move with the fluid. Therefore, the internal components will be relatively dislocated, thereby enhancing the mixing effect and achieving a standard uniform distribution effect in a short time.

[0025] In an environmentally friendly concrete preparation system of the present invention, a swing lever, a driving rod, a longitudinal swing piece, etc. are set. As the lower shaft reciprocates longitudinally, the driving rod pushes the swing lever to swing through the limit shaft. The swing of the swing lever will simultaneously drive the longitudinal swing pieces on both sides to swing asynchronously. Specifically, when the longitudinal swing piece on the left swings upward, the longitudinal swing piece on the right swings downward, and the left and right longitudinal swing pieces will swing up and down alternately. The longitudinal swing piece on the left swings upward, and the longitudinal swing piece on the right swings to the bottom. At this time, the mixing blade is tilted, and the material on the left will be pushed upward to the longitudinal swing piece by the longitudinal swing piece. In the area of ​​action, the longitudinal swing piece will continue to lift the pushed material upward, and with the rotation of the lower shaft, the material is guided by the stirring blade and flows relative to the stirring blade. When the material flows to the right side of the stirring blade, it moves downward under the action of gravity. At this time, the longitudinal swing piece on the right swings downward, accelerating the downward speed of the material on the right. In general, the material on the left is lifted and decelerated by the left longitudinal swing piece, and the material on the right is swung downward by the right longitudinal swing piece to accelerate the downward flow, thereby further improving the circulation speed of the material in the up and down directions, greatly increasing the change in the longitudinal distance of the material, and thus improving the mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] The present invention will be further described below with reference to the accompanying drawings and examples.

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

[0029] Figure 2 yes Figure 1 Bottom diagram of ;

[0030] Figure 3 is a longitudinal cross-sectional view of the mixing shell 11 of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the inner cone barrel 16 in the present invention;

[0032] Figure 5 Schematic diagram of the structure inside the mixing shell 11 of the present invention;

[0033] Figure 6 It is a schematic structural diagram of the combination of the rotary stirring assembly 20 and the longitudinal stirring assembly 19 in the present invention;

[0034] Figure 7 2 is a schematic structural diagram of the rotary stirring assembly 20 of the present invention;

[0035] Figure 8 1 is a schematic structural diagram of a first embodiment of the longitudinal stirring assembly 19 of the present invention;

[0036] Figure 9 yes Figure 8 Five working states of the longitudinal stirring assembly 19;

[0037] Figure 10 1 is a schematic structural diagram of a second embodiment of the longitudinal stirring assembly 19 of the present invention;

[0038] Figure 11 yes Figure 10 Three working states of the longitudinal stirring assembly 19;

[0039] Figure 12 It is a structural schematic diagram of the driving unit in the present invention;

[0040] Figure 13 Schematic diagram of the structure in which the drive unit is installed in the mixing shell 11;

[0041] Figure 14 It is a schematic diagram of the path of the bottom aggregate flowing upward in the present invention.

[0042] Description of reference numerals:

[0043] Bracket 10, mixing shell 11, top end cover 12, feed box 13, discharge pipe 15, inner cone barrel 16, outer cone barrel 17, stirring chamber 18, longitudinal stirring assembly 19, rotary stirring assembly 20, rotating sleeve 21, lower shaft 22, upper shaft 23, rotating groove 24, rotation limit bar 25, limit groove 26, first spring 27, center groove 28, first slider 29, rack 30, stirring blade 31, longitudinal swing piece 32, bottom bracket 33, annular frame 34, rotating body 35, second slider 36, connecting rod 37, stirring head 38, driving rocker arm 39, hinged plate 40, open hole 41, sliding rod 42, sliding groove 43, second spring 44, connecting rod 45, sealing ring 47, gear 48, elastic protrusion 49 , inner center hole 50, outer center hole 51, outer feed trough 52, inner feed trough 53, inner discharge port 54, outer discharge port 55, conical panel 56, agitation groove 57, first bracket 58, first motor 59, driving wheel 60, driven wheel 61, second motor 62, inertia wheel 63, second pulley 64, power shaft 65, first pulley 66, belt 67, belt pressure rod 68, belt pressure pulley 69, tension spring 70, liquid spray nozzle 71, elastic sealing ring 72, annular water injection groove 74, one-way valve 75, water inlet pipe 76, swing lever 80, movable groove 81, drive rod 82, sliding shaft 83, slide rail 84, limit shaft 85, swing center shaft 86, moving rod 87, sealing cover 88, fixed sleeve 89. DETAILED DESCRIPTION

[0044] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0045] In the description of the present invention, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or be operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0047] Refer to the attached Figure 1-13 The present invention provides an environmentally friendly concrete preparation system, including a bracket 10 and a mixing shell 11 fixed on the bracket 10, a driving unit is arranged on the upper side of the mixing shell 11, and a feeding unit is also fixedly arranged on the upper side of the mixing shell 11, the mixing shell 11 includes an outer cone barrel 17, an inner cone barrel 16 is arranged inside the outer cone barrel 17, a plurality of elastic protrusions 49 are arranged on the inner wall of the outer cone barrel 17, a side of the inner cone barrel 16 facing the outer cone barrel 17 has a plurality of agitation grooves 57, an inner wall of the inner cone barrel 16 is provided with an elastically deformable cone panel 56, the cone panel 56 covers the inner surface of the agitation groove 57, the elastic protrusion 49 protrudes toward the agitation groove 57, the inner cone barrel 16 moves up and down in the outer cone barrel 17, an elastic elastic sealing ring 72 is fixedly arranged on the upper side of the inner cone barrel 16, the elastic sealing ring 72 forms a sealed annular water injection groove 74 with the inner wall of the outer cone barrel 17, the inner cone barrel 16 The upper cover is also circumferentially distributed with a number of liquid spray nozzles 71 for spraying liquid toward the inner wall of the inner cone barrel 16. The liquid spray nozzles 71 are connected to the annular water injection groove 74. A one-way valve 75 is provided on the upper cover of the outer cone barrel 17. The one-way valve 75 is connected to the annular water injection groove 74. A through hole is opened in the center of the upper cover of the inner cone barrel 16. A lower shaft 22 is rotatably arranged in the through hole. The lower shaft 22 extends downward into the inner cavity of the inner cone barrel 16, and a rotating stirring assembly 20 is swingingly arranged on the side of the lower shaft 22. A longitudinal stirring assembly 19 is provided at the bottom of the lower shaft 22. The driving unit drives the lower shaft 22 to rotate. The driving unit also drives the lower shaft 22 to reciprocate longitudinally. A bottom bracket 33 is provided at the bottom of the lower shaft 22. The bottom bracket 33 is connected to the inner cone barrel 16 to drive the inner cone barrel 16 to move longitudinally in the outer cone barrel 17 to squeeze the elastic sealing ring 72 so that the liquid in the annular water injection groove 74 is sprayed out through the liquid spray nozzle 71.

[0048] In specific implementation, the outer conical barrel 17 has a cylindrical upper side and a conical lower side. A top end cap 12 is fixedly mounted on the upper end of the outer conical barrel 17. The inner conical barrel 16 is shaped identically to the outer conical barrel 17 and smaller in volume. A gap is formed between the inner and outer conical barrels 16, allowing for relative movement. The top of the inner conical barrel 16 also has a top cap, and within the inner conical barrel 16 is a mixing chamber 18 for holding concrete. The bracket 10 includes vertical columns and horizontal columns 14. Three vertical columns are fixedly connected to the lower side of the mixing shell 11, and three horizontal columns 14 are fixedly connected between the vertical columns to secure the columns. A one-way valve 75 is mounted on the upper edge of the top end cap 12. The lower end of the one-way valve 75 is connected to an annular water injection trough 74, and the upper end of the one-way valve 75 is connected to a water inlet pipe 76. The one-way valve 75 can replenish water from the water inlet pipe 76 into the annular water injection trough 74 in a one-way manner. A plurality of liquid spray nozzles 71 are circumferentially distributed on the inner wall of the inner cone barrel 16 and spray water toward the upper inner cone barrel 16 .

[0049] Preferably, the centers of the inner cone barrel 16 and the outer cone barrel 17 are both provided with coaxial through holes running longitudinally therethrough. Specifically, the through hole of the inner cone barrel 16 is the inner center hole 50, and the through hole of the outer cone barrel 17 is the outer center hole 51. A rotating sleeve 21 is rotatably arranged in the through hole, and a lower shaft 22 is longitudinally slidably arranged in the rotating sleeve 21. The interior of the lower shaft 22 has a center groove 28, and a first slider 29 is longitudinally slidably arranged in the center groove 28. A rack 30 is fixedly arranged at the lower end of the first slider 29. A rotating hole is provided on the side wall of the center groove 28, and a gear 48 is rotatably arranged in the rotating hole. The gear 48 is engaged with the rack 30. One end of the gear 48 passes through the rotating hole and is fixedly connected to the rotating stirring assembly 20. The bottom of the rack 30 is connected to the bottom bracket 33.

[0050] Specifically, a first spring 27 is provided on the upper side of the first slider 29 , the top end of the first spring 27 abuts against the top wall of the central groove 28 , and the lower end of the first spring 27 abuts against the first slider 29 to push the first slider 29 to move downward.

[0051] Regarding the specific structure of the longitudinal stirring assembly 19, in the first embodiment of the present application, a second slider 36 is fixedly connected to the bottom of the rack 30, a stirring head 38 is set on the lower side of the second slider 36, a second spring 44 is set between the second slider 36 and the stirring head 38, a driving rocker 39 is hinged on the side of the stirring head 38, a longitudinal swing piece 32 is hinged on the bottom side of the lower shaft 22, the longitudinal swing piece 32 is hinged to the driving rocker 39, and the bottom of the stirring head 38 is fixedly connected to the bottom bracket 33.

[0052] In this embodiment, the lower end of the second slider 36 has a sliding groove 43, and a sliding rod 42 is longitudinally slidably arranged in the sliding groove 43. A connecting rod 37 is fixedly arranged at the bottom of the sliding rod 42. The inner diameter of the lower opening of the lower shaft 22 is increased to form an open hole 41. The connecting rod 37 moves longitudinally in the open hole 41. A second spring 44 is arranged between the connecting rod 37 and the second slider 36. A stirring head 38 is fixedly arranged at the lower end of the connecting rod 37. A hinged plate 40 is provided on the inner wall protrusion of the longitudinal swing piece 32. A rotating shaft is fixedly arranged on the hinged plate 40. The end of the driving rocker arm 39 is sleeved on the rotating shaft and rotates on the rotating shaft.

[0053] Regarding the specific structure of the longitudinal stirring assembly 19, in the second embodiment of the present application, the bottom of the rack 30 is fixedly connected to the second slider 36, a sealing cover 88 is fixedly provided at the lower opening of the lower shaft 22, a second spring 44 is provided between the sealing cover 88 and the second slider 36, a moving rod 87 is fixedly provided at the lower end of the sealing cover 88, a fixed sleeve 89 is provided on the outer side of the moving rod 87, an annular frame 34 is fixedly provided on the outer side of the fixed sleeve 89, a stirring head 38 is fixedly provided at the lower end of the fixed sleeve 89, the bottom of the stirring head 38 is fixedly connected to the bottom bracket 33, and the stirring head 38 has a movable Slot 81, a driving rod 82 is fixedly set at the lower end of the movable rod 87, and the driving rod 82 extends downward into the movable slot 81. A swing center axis 86 is fixedly set at the center of the movable slot 81, and a swing lever 80 is rotatably set on the swing center axis 86. Two limit shafts 85 are longitudinally spaced on the driving rod 82, and the swing lever 80 is stuck between the two limit shafts 85. The side of the annular frame 34 is hingedly provided with a longitudinal swing piece 32, and the inner side of the longitudinal swing piece 32 is hinged to the end of the swing lever 80. The swing of the swing lever 80 can drive the two longitudinal swing pieces 32 to swing up alternately.

[0054] In this embodiment, a sliding shaft 83 is fixedly provided at the end of the swing lever 80 , and a sliding rail 84 is provided on the inner wall of the longitudinal swing piece 32 , and the sliding shaft 83 slides in the sliding rail 84 .

[0055] Preferably, the longitudinal swing piece 32 is divided into two lobes and symmetrically arranged around the stirring head 38. The outer surface of each longitudinal swing piece 32 is an arc-shaped surface formed by rotating an arc line convex to the side.

[0056] Preferably, the rotating stirring assembly 20 includes a stirring blade 31 and a connecting rod 45, one end of the connecting rod 45 is fixedly connected to the stirring blade 31, and the gear 48 extends to the outside of the center groove 28 to fix the rotating body 35, and two connecting rods 45 are locked on the rotating body 35, and the axes of the two connecting rods 45 form an angle, and a sealing ring 47 is sleeved on the outside of the rotating body 35, and the sealing ring 47 is sealed and fixed on the outer wall of the lower shaft 22.

[0057] Preferably, the driving unit includes a rotary drive assembly, which includes a first motor 59, a driving wheel 60 and a passive wheel 61. A first bracket 58 is fixedly installed on the upper side of the mixing shell 11, and a first motor 59 is fixedly installed on the upper side of the first bracket 58. The shaft of the first motor 59 is fixedly connected to the driving wheel 60. The passive wheel 61 is fixedly sleeved on the outer side of the rotating sleeve 21, and the passive wheel 61 is engaged with the driving wheel 60.

[0058] Preferably, the drive unit also includes an inertia drive assembly, which includes an inertia drive assembly including an inertia wheel 63, a second pulley 64 and an upper shaft 23. The upper shaft 23 is rotatably arranged on the top of the lower shaft 22. A power shaft 65 is rotatably arranged on the upper end of the upper shaft 23. The power shaft 65 is coaxially fixed with the second pulley 64. The power shaft 65 is biased and fixed with the inertia wheel 63. The upper end of the mixing shell 11 is also fixed with a second motor 62. The shaft of the second motor 62 is fixed with a first pulley 66. The first pulley 66 and the second pulley 64 are connected by a belt 67.

[0059] Specifically, the bottom of the upper shaft 23 has a transverse rotation groove 24, into which the power shaft 65 extends and rotates. A longitudinally extending rotation limit bar 25 is fixedly provided on the side of the lower shaft 22, and the inner wall of the rotating sleeve 21 has a longitudinally extending limit groove 26. The rotation limit bar 25 slides longitudinally within the limit groove 26. The rotation limit bar 25 and the limit groove 26 engage with each other in a one-to-one correspondence, so that the rotating sleeve 21 can drive the lower shaft 22 to rotate, and the lower shaft 22 can slide up and down within the rotating sleeve 21.

[0060] A belt pressure rod 68 is also rotatably provided on the second motor 62, and a belt pressure pulley 69 is rotatably provided on the upper end of the belt pressure rod 68. A tension spring 70 is provided between the belt pressure rod 68 and the second motor 62. The lower side of the belt pressure pulley 69 abuts against the belt 67. The tension spring 70 pulls the belt pressure rod 68 downward, and the belt pressure rod 68 drives the belt pressure pulley 69 to squeeze the belt 67 to tighten the belt 67.

[0061] Preferably, the feeding unit includes a feed box 13 fixedly arranged at the upper end of the mixing shell 11, the feed box 13 has a feeding port, and a screen mesh is fixedly arranged horizontally in the inner cavity of the feed box 13, and the upper covers of the outer conical barrel 17 and the inner conical barrel 16 are respectively provided with an outer feed trough 52 and an inner feed trough 53 that are interconnected, and the outer feed trough 52 and the inner feed trough 53 are aligned with the screen mesh.

[0062] Preferably, an inner discharge port 54 and an outer discharge port 55 are respectively provided on the lower sides of the inner conical barrel 16 and the outer conical barrel 17, and a discharge pipe 15 is fixedly provided at the lower end of the outer discharge port 55. The bottom bracket 33 has a longitudinal fixed rod and three inclined support rods. The fixed rod is fixedly connected to the bottom of the stirring head 38, one end of the support rod is connected to the fixed rod, and the other end is fixedly connected to the inner wall of the inner discharge port 54, and the support rod is elastic.

[0063] An environmentally friendly concrete preparation process comprises the following steps:

[0064] S1: First, some water and coarse aggregate are added to the inner cone barrel 16, and the driving unit drives the rotating stirring assembly 20 to rotate for preliminary stirring;

[0065] S2: add fine aggregate, cement and the remaining proportion of water to the coarse aggregate preliminarily mixed in S1, and mix again;

[0066] S3: During the stirring process in S2, the inertial drive assembly is activated to enable the lower shaft 22 to move up and down, and the lower shaft 22 drives the rotating stirring assembly 20 to move longitudinally to increase the volume of the stirring action;

[0067] S4: The inertial drive assembly drives the longitudinal stirring assembly 19 to move, and the longitudinal stirring assembly 19 swings back and forth, pushing the coarse aggregate at the bottom of the inner cone barrel 16 upward and sending it into the action space of the rotary stirring assembly 20 for rotary stirring. The coarse aggregate that has settled at the bottom can move upward and spiral downward again under the stirring of the rotary stirring assembly 20. While the various components of the concrete circulate longitudinally back and forth in the stirring space, they can be rotated by the rotary stirring assembly 20, thereby enhancing the uniform distribution effect of the various components of the concrete.

[0068] The present invention provides an application of an environmentally friendly concrete preparation system. First, coarse aggregate, that is, gravel, is added and fed into the stirring chamber 18 of the inner cone barrel 16 through the feed box 13, the outer feed trough 52, and the inner feed trough 53. A certain proportion of water is added to the stirring chamber 18. The drive unit is started, and the first motor 59 drives the driving wheel 60 to rotate. The driving wheel 60 drives the driven wheel 61 to rotate. The driven wheel 61 drives the rotating sleeve 21 to rotate. The rotating sleeve 21 drives the lower shaft 22 to rotate. The lower shaft 22 drives the rotating stirring assembly 20 and the longitudinal stirring assembly 19 to rotate coaxially for preliminary stirring.

[0069] After a period of time, the remaining components, including fine aggregate, cement and the remaining proportion of water, are continued to be added to the mixing chamber 18 and stirred again. At this time, since the coarse aggregate is at the bottom, in order to make the coarse aggregate quickly and fully blend with other components, the second motor 62 is started, and the second pulley 64 is driven to rotate through the first pulley 66 and the belt 67. The second pulley 64 drives the inertia wheel 63 to rotate through the power shaft 65. Since the inertia wheel 63 is eccentrically fixed on the power shaft 65, when the inertia wheel 63 rotates, it has longitudinal inertia, and uses strong inertia to drive the upper shaft 23 and the lower shaft 22 to move up and down in the rotating sleeve 21. During the movement, the first motor 59 is started at the same time and drives the rotating sleeve 21 to rotate. The rotating sleeve 21 drives the lower shaft 22 to rotate. At this time, the upper shaft 23 does not rotate, the lower shaft 22 rotates, and the upper shaft 23 drives the lower shaft 22 to move up and down.

[0070] As the lower shaft 22 moves up and down, the lower shaft 22 will squeeze the first spring 27, and the first spring 27 will transmit the force to the first slider 29, the center groove 28, the second slider 36, the stirring head 38 and the bottom bracket 33. The bottom bracket 33 is directly connected to the inner cone barrel 16. The bottom bracket 33 has a certain elasticity and has a shock-absorbing effect. The bottom bracket 33 drives the inner cone barrel 16 to reciprocate in a small distance longitudinally, and the outer cone barrel 17 remains stationary. The distance between the inner cone barrel 16 and the outer cone barrel 17 will increase or decrease. When the gap is reduced, the elastic protrusion 49 will abut the cone panel 56, and the cone panel 56 will be partially raised to facilitate The lumps on the inner surface of the cone panel 56 fall off. At the same time, the elastic sealing ring 72 itself will be squeezed back and forth with the movement of the inner cone barrel 16, and the volume of the annular water injection groove 74 will increase and decrease. When the volume of the annular water injection groove 74 increases, external water enters the annular water injection groove 74 through the water inlet pipe 76 and the one-way valve 75, and is sprayed to the inner wall of the inner cone barrel 16 through the liquid spray nozzle 71. Since the liquid spray nozzles 71 are evenly distributed on the inner wall of the inner cone barrel 16, the effect of uniform water filling can be achieved, which is conducive to adding water and cleaning the inner wall of the inner cone barrel 16. The stirring process is sealed throughout, which reduces dust leakage and is more environmentally friendly.

[0071] The working process of stirring in the first embodiment of the present invention is:

[0072] like Figures 1-8 As shown, in the first embodiment of the present device, due to the fixing effect of the bottom bracket 33 on the stirring head 38, the stirring head 38 remains basically stationary, the lower shaft 22 moves up and down, and the lower shaft 22 drives the hinged plate 40 to move downward. At the same time, under the support of the driving rocker 39, the hinged plate 40 moves downward while expanding. When the hinged plate 40 expands upward, the gear 48 moves downward. Under the restriction of the rack 30, the gear 48 drives the rotating body 35 to rotate, and the rotating body 35 drives the stirring blade 31 to swing through the connecting rod 45. The swing of the stirring blade 31 and the swing of the longitudinal swing piece 32 cooperate with each other, specifically including five states, such as Figure 9 As shown:

[0073] The first state: viewed from above, the lower shaft 22 rotates in a clockwise direction, the stirring blade 31 remains vertical, and the longitudinal swing piece 32 is folded downward, which is the default state.

[0074] The second state: As the lower shaft 22 moves downward, the mixing blades 31 tilt, and the mixing blades 31 at the bottom swing upward to guide the cement to flow upward along the mixing blades 31, diverting the bottom material to the top, and under the action of gravity, the material will naturally fall back to its original position after passing through the mixing blades 31. The material can flow back and forth in the longitudinal space, which greatly reduces the probability of coarse aggregate sinking to the bottom and improves the mixing effect. At the same time, when the mixing blades 31 tilt, the longitudinal swing piece 32 will swing upward synchronously. The upward swing of the longitudinal swing piece 32 will push the coarse aggregate gathered at the bottom upward, and as the mixing blades 31 tilt, the coarse aggregate enters the action space of the mixing blades 31 and is further pushed upward by the mixing blades 31, completing the redistribution of the high-density aggregate that has sunk to the bottom. As the lower shaft 22 rotates, the material enters the upper part of the mixing blades 31 and flows for full fusion. Figure 14 As shown in the figure, due to the small volume of the cone at the bottom of the mixing chamber, the material will be pushed to the center of the mixing blades. Under the centrifugal effect, the pushed-up materials will move to the surroundings. The material at the periphery has a high linear velocity and a good mixing effect. The peripheral material will be further guided by the mixing blades to flow upward, thereby forming a flow direction that diffuses from the center to the surroundings in the working area of ​​the mixing blades. The material gathered at the bottom will be evenly dispersed, and the fluid at the periphery will be guided to flow longitudinally, and the longitudinal flow direction can change at any time, which greatly extends the length of the material flow path. By changing the flow direction, the relative slippage of the internal components of the fluid is increased, the mixing effect is improved, and the probability of coarse aggregate sinking to the bottom is reduced.

[0075] The third state: as the lower shaft 22 moves down to the bottom limit, the stirring blade 31 tilts to the limit position, and the longitudinal swing piece 32 is expanded to the limit position. At this time, the material on the bottom is completely lifted and guided upward by the stirring blade 31 to achieve mixing. Since the angle of the stirring blade 31 tends to be horizontal, the longitudinal flow distance of the material decreases and the lateral flow distance increases relative to the stirring blade 31. The change from the second state to the third state will change the flow direction of the material. The material gradually flows upward from a flow close to the horizontal direction. This reciprocating process allows the longitudinal flow component velocity of the material to change periodically during the rotary flow process, from small to large, and then from large to small. The material changes in both direction and speed. Different aggregates have different inertia. The direction and speed of materials with large inertia are difficult to change, while materials with small inertia are more likely to move with the fluid. Therefore, the internal components will be relatively dislocated, thereby enhancing the mixing effect and achieving a standard uniform distribution effect in a short time.

[0076] Fourth state: the lower shaft 22 moves upward to reset. During this process, the stirring blade 31 rotates in the opposite direction to increase the longitudinal flow distance of the material. At the same time, the longitudinal swing piece 32 swings downward, and the upper material flows downward, further increasing the longitudinal flow distance of the logistics, thereby enhancing the material uniform distribution effect.

[0077] Fifth state: the lower shaft 22 moves upward to the limit, so that the stirring blade 31 returns to the position of the first state, and the longitudinal swing piece 32 returns to the position of the first state.

[0078] The working process of stirring in the second embodiment of the present invention is:

[0079] like Figure 10 As shown, in the second embodiment of the present device, the lower shaft 22 reciprocates longitudinally, which can drive the sealing cover 88 and the moving rod 87 to move synchronously. The fixed sleeve 89 moves downward to drive the driving rod 82 to move downward. The driving rod 82 pushes the swing lever 80 to swing through the limit shaft 85. The swing of the swing lever 80 will simultaneously drive the longitudinal swing pieces 32 on both sides to swing asynchronously. Specifically, when the longitudinal swing piece 32 on the left swings upward, the longitudinal swing piece 32 on the right swings downward, and the left and right longitudinal swing pieces 32 will swing up and down alternately. Figure 1 As shown, there are five working states, as follows:

[0080] The first state: the left longitudinal swing piece 32 swings upward, and the right longitudinal swing piece 32 swings to the lower side. At this time, the stirring blade 31 tilts, and the material on the left side will be pushed upward by the longitudinal swing piece 32 to the action area of ​​the longitudinal swing piece 32. The longitudinal swing piece 32 will continue to lift the pushed material upward, and as the lower shaft 22 rotates, the material is guided by the stirring blade 31 and flows relative to the stirring blade 31. When the material flows to the right side of the stirring blade 31, it moves downward under the action of gravity. At this time, the right longitudinal swing piece 32 swings downward, accelerating the downward movement of the material on the right. In general, the material on the left is lifted and decelerated by the left longitudinal swing piece 32, and the material on the right is accelerated by the right longitudinal swing piece 32 downward, thereby further increasing the circulation speed of the material in the up and down directions, thereby improving the mixing effect.

[0081] Second state: the left longitudinal swing piece 32 and the right longitudinal swing piece 32 move to the middle position, and the stirring blade 31 also moves to the limit angle of inclination. At this time, the rotation of the lower shaft 22 will reduce the longitudinal movement speed of the material.

[0082] The third state is to return to the first state, and keep the stirring blade 31 and the longitudinal swing piece 32 in the same posture as the first state.

[0083] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. An environmentally friendly concrete preparation system, comprising a bracket and a mixing shell fixed on the bracket, a driving unit is provided on the upper side of the mixing shell, and a feeding unit is also fixed on the upper side of the mixing shell, characterized in that: The mixing shell comprises an outer cone barrel, an inner cone barrel is arranged inside the outer cone barrel, and an inner wall of the outer cone barrel is provided with a plurality of elastic convex bodies, and the inner cone barrel has a plurality of agitation grooves on a side facing the outer cone barrel, and the inner wall of the inner cone barrel is provided with a cone panel that can be elastically deformed, and the cone panel covers the inner surface of the agitation groove, and the elastic convex bodies protrude toward the agitation groove, and the inner cone barrel moves up and down in the outer cone barrel, and an elastic elastic sealing ring is fixedly arranged on the upper side of the inner cone barrel, and the elastic sealing ring forms a sealed annular water injection groove with the inner wall of the outer cone barrel, and the upper cover of the inner cone barrel is also circumferentially provided with a plurality of liquid spray nozzles for spraying liquid toward the inner wall of the inner cone barrel, and the liquid spray nozzle is connected with the annular water injection groove, and the upper cover of the outer cone barrel is provided with a one-way valve, and the one-way valve is connected with the annular water injection groove, and a through hole is opened in the center of the upper cover of the inner cone barrel, and a lower shaft is rotatably arranged in the through hole, and the lower shaft extends downward into the inner cavity of the inner cone barrel, and the side of the lower shaft is swingably arranged A rotating stirring assembly is provided, a longitudinal stirring assembly is provided at the bottom of the lower shaft, the driving unit drives the lower shaft to rotate, and the driving unit also drives the lower shaft to reciprocate longitudinally, a bottom bracket is provided at the bottom of the lower shaft, and the bottom bracket is connected to the inner cone barrel to drive the inner cone barrel to move longitudinally in the outer cone barrel to squeeze the elastic sealing ring so that the liquid in the annular water injection groove is sprayed out through the liquid spray nozzle, the centers of the inner cone barrel and the outer cone barrel are both provided with a longitudinally penetrating coaxial through-hole, a rotating sleeve is rotatably provided in the through-hole, the lower shaft is longitudinally slidably provided in the rotating sleeve, the interior of the lower shaft has a central groove, and a first slider is longitudinally slidably provided in the central groove, a rack is fixedly provided at the lower end of the first slider, a rotating hole is provided on the side wall of the central groove, a gear is rotatably provided in the rotating hole, the gear is meshed with the rack, one end of the gear passes through the rotating hole and is fixedly connected to the rotating stirring assembly, and the bottom of the rack is connected to the bottom bracket; The structure of the longitudinal stirring assembly is as follows: a second slider is fixedly connected to the bottom of the rack, a stirring head is set on the lower side of the second slider, a second spring is set between the second slider and the stirring head, a driving rocker arm is hinged on the side of the stirring head, a longitudinal swing piece is hinged on the bottom side of the lower shaft, the longitudinal swing piece is hinged to the driving rocker arm, and the bottom of the stirring head is fixedly connected to the bottom bracket.

2. The environmentally friendly concrete preparation system according to claim 1, characterized in that: The cam is fixedly provided with a second spring, and the cam is fixedly provided with a second spring between the second sliding block and the lower end of the cam.

3. The environmentally friendly concrete preparation system according to claim 1, characterized in that: The rotating stirring assembly includes a stirring blade and a connecting rod, one end of the connecting rod is fixedly connected to the stirring blade, and a rotating body is fixedly provided at the portion of the gear extending to the outside of the central groove. Two connecting rods are locked on the rotating body, and the axes of the two connecting rods form an angle. A sealing ring is sleeved on the outside of the rotating body, and the sealing ring is sealed and fixed on the outer wall of the lower shaft.

4. The environmentally friendly concrete preparation system according to claim 1, characterized in that: The driving unit includes a rotary driving assembly, which includes a first motor, a driving wheel and a driven wheel. A first bracket is fixedly installed on the upper side of the mixing shell, and the first motor is fixedly installed on the upper side of the first bracket. The shaft of the first motor is fixedly connected to the driving wheel. A driven wheel is fixedly sleeved on the outer side of the rotating sleeve, and the driven wheel is engaged with the driving wheel.

5. The environmentally friendly concrete preparation system according to claim 4, characterized in that: The drive unit also includes an inertia drive assembly, which includes an inertia drive assembly, a second pulley and an upper shaft. The upper shaft is rotatably arranged on the top of the lower shaft, and a power shaft is rotatably arranged on the upper end of the upper shaft. The power shaft is coaxially fixed with a second pulley, and the power shaft is biased and fixed with an inertia pulley. The upper end of the mixing shell is also fixed with a second motor, and the shaft of the second motor is fixed with a first pulley, and the first pulley and the second pulley are connected by a belt.

6. The environmentally friendly concrete preparation system according to claim 1, characterized in that: The feeding unit includes a feed box fixedly arranged at the upper end of the mixing shell, the feed box having a feeding port, and a screen mesh fixedly arranged horizontally in the inner cavity of the feed box, and the upper covers of the outer conical barrel and the inner conical barrel are respectively provided with an outer feed trough and an inner feed trough that are interconnected, and the outer feed trough and the inner feed trough are both aligned with the screen mesh.

7. The environmentally friendly concrete preparation system according to claim 2, characterized in that: An inner discharge port and an outer discharge port are respectively provided on the lower sides of the inner conical barrel and the outer conical barrel. A discharge pipe is fixedly provided at the lower end of the outer discharge port. The bottom bracket has a longitudinal fixing rod and three inclined support rods. The fixing rod is fixedly connected to the bottom of the stirring head. One end of the support rod is connected to the fixing rod, and the other end is fixedly connected to the inner wall of the inner discharge port. The support rod is elastic.

8. An environmentally friendly concrete preparation process, applied to an environmentally friendly concrete preparation system according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: First, add some water and coarse aggregate into the inner cone barrel, and the driving unit drives the rotating stirring assembly to rotate for preliminary stirring; S2: add fine aggregate, cement and the remaining proportion of water to the coarse aggregate preliminarily mixed in S1, and mix again; S3: During the stirring process in S2, the inertial drive assembly is activated to enable the lower shaft to move up and down, and the lower shaft drives the rotating stirring assembly to move longitudinally to increase the volume of the stirring action; S4: The inertial drive assembly drives the longitudinal mixing assembly to move, and the longitudinal mixing assembly swings back and forth, pushing the coarse aggregate at the bottom of the inner cone barrel upward and sending it into the rotating mixing action space of the rotating mixing assembly. The coarse aggregate that has settled at the bottom can move upward and spiral downward again under the stirring of the rotating mixing assembly. While the various components of the concrete reciprocate longitudinally in the mixing space, they can be rotated by the rotating mixing assembly, thereby enhancing the uniform distribution effect of the various components of the concrete.

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