Concrete mixing equipment capable of conveniently controlling water-cement ratio

Abstract

The invention relates to the technical field of concrete mixing, in particular to concrete mixing equipment capable of conveniently controlling the water cement ratio, which comprises a mixing main cylinder, a central main shaft is arranged on the inner side of the mixing main cylinder, the upper end of the central main shaft rotatably penetrates through the inner top wall of the mixing main cylinder, and the lower end of the central main shaft is fixedly sleeved with a central ring; a feeding barrel is fixedly inserted into the inner ring face of the center ring, the end, located on the right side of the center ring, of the feeding barrel is concentrically and rotationally sleeved with a concentric barrel, an interlayer barrel is arranged on the left side of the center ring, and the right end of the interlayer barrel is rotationally inserted between the feeding barrel and the center ring. According to the concrete mixing device, by arranging the structures such as the interlayer barrel and the material processing barrel, concrete in the material processing barrel is firstly mixed with added raw materials, premixed materials in the material processing barrel are pushed out from the material through groove and the groove hole, the premixed materials enter from the interior of concrete, and the newly added raw materials can be effectively prevented from splashing during stirring.

Description

Technical Field

[0001] The invention relates to the technical field of concrete mixing, in particular to a concrete mixing device which is convenient for controlling the water-cement ratio. Background Art

[0002] Concrete refers to an artificial stone made of cement as the main cementitious material, water, sand, gravel, and chemical admixtures and mineral admixtures when necessary, mixed in appropriate proportions, and then uniformly stirred, compacted, formed, and cured and hardened. Concrete is mainly divided into two stages and states: the plastic state before coagulation and hardening, that is, fresh concrete or concrete mixture; the hard state after hardening, that is, hardened concrete or concrete. Concrete has the advantages of abundant raw materials, low cost, good plasticity, high strength, good durability, and can be reinforced with steel bars.

[0003] Chinese patent announcement number CN213533243U discloses a feeding structure for a concrete mixer, including a concrete mixer body, a feeding window, a motor and a stabilizing pulley, wherein a feeding window is provided at the top of the side wall of the concrete mixer body, a vertical rod is welded and fixed at the top of the positioning plate, and the top of the vertical rod is connected to the bottom end of the connecting rod, and the top end of the connecting rod is installed on the lower end surface of the unloading plate, and the unloading plate is installed on the inner wall of the feeding box through the bottom shaft installed on both sides of its bottom end. The feeding structure for the concrete mixer replaces manual operation, and is not only reliable in structure and high in stability, but also can promote the rapid falling of sand and gravel aggregates. The above-mentioned related technologies have the following defects: the feeding structure of the concrete mixing equipment in the prior art generally discharges the raw materials directly on the upper surface of the mixed soil being mixed, which is easy to cause the newly added raw materials to fly during mixing and mixing, so that the added mixed materials cannot be fully mixed with the mixed concrete. For this reason, a concrete mixing equipment that is easy to control the water-cement ratio is proposed. Summary of the invention

[0004] In order to ensure that newly added raw materials can be fully mixed with the concrete being mixed, the present invention provides a concrete mixing device that is convenient for controlling the water-cement ratio.

[0005] The present invention provides a concrete mixing device that is convenient for controlling the water-cement ratio, and adopts the following technical scheme: it comprises a mixing main cylinder, the inner side of which is provided with a central main shaft, the upper end of which rotates and penetrates the inner top wall of the mixing main cylinder, the lower end of which is fixedly sleeved with a central ring, the inner ring surface of which is fixedly plugged with a processing cylinder, one end of which is located on the right side of the central ring and is concentrically sleeved with a concentric cylinder, an interlayer cylinder is provided on the left side of the central ring, the right end of which is rotatably plugged between the processing cylinder and the central ring, a circular hole coaxial with the central main shaft is provided on the upper surface of the processing cylinder, the inner side of the interlayer cylinder is in an interlayer shape, and a There are two rows of material passing grooves, which are not connected to the interlayer of the interlayer cylinder. A connecting hole is provided on the outer ring surface of the interlayer cylinder and is located behind the circular hole. The connecting hole is not connected to the interlayer of the interlayer cylinder. A plurality of ventilation holes connected to the interlayer of the interlayer cylinder are provided on the inner ring surface of the interlayer cylinder. The ventilation holes are located behind the connecting holes. A row of slot holes is provided on the front of the material cylinder. A mixing chamber connected to the lower end is provided inside the central main shaft. A plurality of long holes connected to the inside of the mixing chamber are provided on the upper end of the central main shaft. A feeding structure is installed on the upper end of each long hole. An air supply structure is rotatably installed on one end of the interlayer cylinder close to the central ring. A transmission structure is installed on the outer surface of the interlayer cylinder. The transmission structure is installed on the inner top wall of the mixing main cylinder.

[0006] Optionally, the outer ring surface of the concentric cylinder is rotatably sleeved with a baffle ring cover, and the other end of the baffle ring cover is fixedly sleeved on the outer surface of the center ring; a conical gear cylinder A is fixedly sleeved on the outer surface of the concentric cylinder and located inside the baffle ring cover; a bevel gear A is meshed on the left side of the conical gear cylinder A, and the upper end of the bevel gear A rotates and passes through the inner ring surface of the baffle ring cover; a spur gear A is fixedly sleeved on the upper end of the bevel gear A; an inner gear ring is fixedly installed on the inner top wall of the mixing main cylinder, and the spur gear A meshes with the inner ring surface of the inner gear ring; and multiple rows of stirring rods are fixed on the outer ring surface of the concentric cylinder.

[0007] Optionally, a disc is fixedly inserted inside the barrel and on the right side of the circular hole, a prism shaft slides through the left side of the disc, a plurality of material shifting plates are fixed to one end of the prism shaft located on the left side of the disc, a reciprocating screw is threadedly inserted at the right end of the prism shaft, and the right end of the reciprocating screw is fixed to the right inner wall of the concentric barrel.

[0008] Optionally, the transmission structure includes three arc-shaped tooth plates, a spur gear B and a protective ring cover, the protective ring cover is fixed to the air supply structure, a conical gear cylinder B is arranged on the inner side of the protective ring cover, the conical gear cylinder B is fixed to the interlayer cylinder, a bevel gear B is meshed on the left side of the conical gear cylinder B, the upper end of the bevel gear B rotates and passes through the inner wall of the protective ring cover, the spur gear B is fixedly sleeved on the upper end of the bevel gear B, the three arc-shaped tooth plates are all fixed to the inner top wall of the mixing main cylinder, the three arc-shaped tooth plates are all coaxially arranged with the central main shaft, and the outer annular surface of the spur gear B is tangent to the inner annular surface of the arc-shaped tooth plates.

[0009] Optionally, the air supply structure includes a ring and a ventilation pipe, the ring is rotatably sleeved on the outer surface of the interlayer tube, the interior of the ventilation pipe is connected to the interior of the interlayer tube, the upper end of the ventilation pipe is fixedly sleeved with a bottom ring, the bottom ring is coaxial with the central main axis, the outer ring surface of the bottom ring is rotatably sleeved with an air cavity ring, the upper surface of the air cavity ring is fixedly connected to an air supply pump, and the air supply pump is fixedly penetrated through the inner top wall of the mixing main tube.

[0010] Optionally, the feeding structure includes a bending tube and a discharge hopper, the lower end of the discharge hopper is fixedly sleeved on the upper end of the bending tube, the lower end of the bending tube is fixedly inserted into the inside of the long hole, the upper end of the bending tube is rotatably inserted with a spiral feeding plate A, the upper end of the discharge hopper is rotatably sleeved on the upper end of the spiral feeding plate A, and the end of the spiral feeding plate A located above the discharge hopper is fixedly sleeved with a driven gear, and the side of the driven gear away from the central main shaft is meshed with a toothed plate combination structure, and the toothed plate combination structure is fixed to the mixing main cylinder.

[0011] The tooth plate combination structure includes a fixed arc tooth plate and a movable arc tooth plate. The fixed arc tooth plate and the movable arc tooth plate are both coaxially arranged with the central main shaft. The bottom surface of the movable arc tooth plate is slidably inserted into the upper surface of the fixed arc tooth plate. The side of the fixed arc tooth plate away from the central main shaft is fixed to the mixing main cylinder. A bolt pressure rod is arranged in contact with the upper surface of the fixed arc tooth plate, and the movable arc tooth plate is threadedly sleeved on the outer surface of the bolt pressure rod.

[0012] Optionally, an inner shaft is rotatably inserted at the axis of the central main shaft, and one end of the inner shaft is located inside the mixing chamber and is fixedly sleeved with two spiral feed plates B. A plurality of stirring cross bars are fixed to the outer ring surface of the inner shaft, and the stirring cross bars are located inside the mixing chamber, and the stirring cross bars are located above the spiral feed plates B. A motor A is fixed to the upper end surface of the central main shaft, and the output end of the motor A is fixed to the upper end of the inner shaft.

[0013] Optionally, multiple driven gears are staggered and distributed in a spiral step shape around the axis of the central main shaft, a stabilizing ring is fixedly sleeved on the upper surface of the mixing main cylinder, multiple discharge hoppers are located on the inner ring side of the stabilizing ring, and a side of each discharge hopper away from the mixing main cylinder is slidably inserted into the inner ring surface of the stabilizing ring.

[0014] Optionally, an outer gear ring is fixedly sleeved on one end of the central main shaft located above the mixing main cylinder, a driving gear is meshed on the outer ring surface of the outer gear ring, a motor B is fixed on the upper surface of the mixing main cylinder, and the driving gear is fixedly sleeved on the output end of motor B.

[0015] In summary, the present invention includes the following beneficial technical effects: 1. The present invention is provided with two rows of material troughs, an interlayer cylinder, a connecting hole, a material handling cylinder and a circular hole. When the central main shaft rotates, the material handling cylinder is driven to rotate around the central main shaft through the central ring, and the transmission structure drives the interlayer cylinder to rotate intermittently relative to the central ring. When the interlayer cylinder first drives the connecting hole to be connected with the circular hole and the lower end of the mixing chamber, the raw materials in the mixing chamber are added into the material handling cylinder through the connecting hole and the circular hole. Then, when the interlayer cylinder continues to rotate, it drives another row of material troughs to be connected with the slot holes of the material handling cylinder, so that the concrete material in the mixing main cylinder enters the material handling cylinder through the material troughs and the slot holes, so that the concrete material in the material handling cylinder is first mixed with the added raw materials. Then, when the interlayer cylinder continues to rotate until another row of material troughs is connected with the slot holes, the vent holes are connected with the circular holes at the same time, so that the air supply structure inflates the material handling cylinder through the interlayer cylinder and the vent holes, and the pre-mixed materials in the material handling cylinder are pushed out from the material troughs and the slot holes, so that the pre-mixed materials enter from the inside of the concrete, which can effectively prevent the newly added raw materials from splashing during stirring.

[0016] 2. The present invention provides components such as a concentric cylinder, an inner gear ring, a prism shaft and a material stripping plate. When the central main shaft rotates, the spur gear A is driven to engage with the inner gear ring. When the spur gear A rotates, it engages with the conical gear cylinder A to drive the concentric cylinder, the stirring rod and the reciprocating screw to rotate. When the stirring rod rotates around the axis of the concentric cylinder, the mixed material in the vertical direction can be stirred to improve the mixing degree. At the same time, when the reciprocating screw rotates, it engages with the prism shaft, and the prism shaft drives the material stripping plate to reciprocate inside the barrel, which can stir the mixed material in the barrel and increase the mixing degree of the premixed materials.

[0017] 3. The present invention sets a movable arc tooth plate, a fixed arc tooth plate and a driven gear. When the central spindle drives the driven gear to rotate around the axis of the central spindle through the bending tube and the discharge hopper, the driven gears at different heights are driven to engage with the movable arc tooth plates and fixed arc tooth plates at different levels. When the driven gear rotates, the spiral feeding plate A is driven to rotate to push the raw materials in the discharge hopper into the mixing chamber through the bending tube and the long hole. After loosening the bolt pressure rod, the movable arc tooth plate can be pushed to rotate relative to the fixed arc tooth plate, changing the arc length between the fixed arc tooth plate and the movable arc tooth plate, controlling the number of rotations of the driven gear meshing therewith, and then controlling the volume of raw materials in different discharge hoppers entering the mixing chamber when the central spindle rotates one circle, and controlling the proportion of raw materials added. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 2 is a schematic diagram of the structure of the connection between the bending tube and the discharge hopper in an embodiment of the present invention; Figure 3 It is a schematic diagram of the right side of some structures in an embodiment of the present invention; Figure 4Schematic diagram of the internal structure of the discharge hopper in an embodiment of the present invention; Figure 5 In the embodiment of the present invention Figure 4 A schematic diagram of the structure enlargement in the middle; Figure 6 Schematic diagram of the internal structure of the main mixing cylinder in an embodiment of the present invention; Figure 7 2 is a schematic diagram of the structure of the connection between the inner shaft and the stirring cross bar in an embodiment of the present invention; Figure 8 Schematic diagram of the structure of the reciprocating screw rod connected to the concentric cylinder in an embodiment of the present invention; Fig. 9 is a schematic diagram of the structure of the connection between the prism shaft and the disc in an embodiment of the present invention; Fig.10 It is a schematic structural diagram of the connection between the material-diverting plate and the prism shaft in an embodiment of the present invention.

[0019] Figure numerals: 1. Mixing main cylinder; 2. Central main shaft; 3. Feeding structure; 31. Bending tube; 32. Discharging hopper; 33. Spiral feeding plate A; 34. Driven gear; 35. Tooth plate combination structure; 351. Fixed arc tooth plate; 352. Movable arc tooth plate; 353. Bolt pressure rod; 36. Stabilizing ring plate; 4. Air supply structure; 41. Ring; 42. Ventilation pipe; 43. Bottom ring; 44. Air cavity ring; 45. Air supply pump; 5. Transmission structure; 51. Arc tooth plate; 52. Spur gear B; 53. Protective ring cover; 54. Conical gear cylinder B; 55. Bevel gear B; 6. Center Center ring; 7, material barrel; 8, concentric barrel; 9, sandwich barrel; 10, round hole; 11, connecting hole; 12, material trough; 13, vent hole; 14, slot hole; 15, mixing chamber; 16, long hole; 17, shielding ring cover; 18, conical gear barrel A; 19, bevel gear A; 20, spur gear A; 21, inner gear ring; 22, stirring rod; 23, disc; 24, prism shaft; 25, material removal plate; 26, reciprocating screw; 27, inner shaft; 28, spiral feed plate B; 29, stirring cross bar; 30, motor A; 301, outer gear ring; 302, driving gear; 303, motor B. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-10 The present invention is described in further detail.

[0021] The embodiment of the present invention discloses a concrete mixing device that is convenient for controlling the water-cement ratio. Figure 1As shown, it includes a mixing main barrel 1, a central main shaft 2 is arranged on the inner side of the mixing main barrel 1, the upper end of the central main shaft 2 rotates and penetrates the inner top wall of the mixing main barrel 1, one end of the central main shaft 2 located above the mixing main barrel 1 is fixedly sleeved with an outer gear ring 301, the outer ring surface of the outer gear ring 301 is meshed with a driving gear 302, a motor B303 is fixed on the upper surface of the mixing main barrel 1, the driving gear 302 is fixedly sleeved on the output end of the motor B303, the motor B303 drives the driving gear 302 to rotate, and the outer gear ring 301 can drive the central main shaft 2 to rotate by meshing with the driving gear 302.

[0022] The lower end of the central main shaft 2 is fixedly sleeved with a central ring 6, the inner ring surface of the central ring 6 is fixedly inserted with a material handling barrel 7, and one end of the material handling barrel 7 located on the right side of the central ring 6 is sleeved with a concentric cylinder 8 for coaxial rotation.

[0023] A baffle ring 17 is rotatably sleeved on the outer ring surface of the concentric cylinder 8, and the other end of the baffle ring 17 is fixedly sleeved on the outer surface of the center ring 6. A conical gear cylinder A18 is fixedly sleeved on the outer surface of the concentric cylinder 8 and located inside the baffle ring 17. A bevel gear A19 is meshed on the left side of the conical gear cylinder A18. The upper end of the bevel gear A19 rotates and passes through the inner ring surface of the baffle ring 17. A spur gear A20 is fixedly sleeved on the upper end of the bevel gear A19. An inner gear ring 21 is fixedly installed on the inner top wall of the mixing main cylinder 1. The spur gear A20 meshes with the inner ring surface of the inner gear ring 21. When the central main shaft 2 rotates, the spur gear A20 is driven to mesh with the inner gear ring 21. When the spur gear A20 rotates, it drives the concentric cylinder 8 to rotate by meshing with the conical gear cylinder A18. Multiple rows of stirring rods 22 are fixed on the outer ring surface of the concentric cylinder 8. When the stirring rods 22 rotate around the axis of the concentric cylinder 8, the mixed material can be stirred in the vertical direction to improve the mixing degree.

[0024] A disc 23 is fixedly inserted inside the barrel 7 and on the right side of the circular hole 10. A prism shaft 24 slides through the left side of the disc 23. A plurality of material-prying plates 25 are fixed to one end of the prism shaft 24 located on the left side of the disc 23. A reciprocating screw rod 26 is threadedly inserted at the right end of the prism shaft 24. The right end of the reciprocating screw rod 26 is fixed to the right inner wall of the concentric barrel 8.

[0025] The concentric cylinder 8 drives the reciprocating screw 26 to rotate synchronously, and the prism shaft 24 and the reciprocating screw 26 rotate relative to each other, driving the prism shaft 24 to drive the material-push plate 25 to move back and forth inside the material barrel 7, so as to stir the mixed material in the material barrel 7 and increase the mixing degree of the premixed material.

[0026] A sandwich tube 9 is arranged on the left side of the center ring 6, and the right end of the sandwich tube 9 is rotatably inserted between the material barrel 7 and the center ring 6. A circular hole 10 coaxial with the center main axis 2 is provided on the upper surface of the material barrel 7, and the inner side of the sandwich tube 9 is in a sandwich shape. Two rows of material passage grooves 12 are provided on the outer ring surface of the sandwich tube 9 and located on the left side of the center ring 6, and the material passage grooves 12 are not connected with the interlayer of the sandwich tube 9. A connecting hole 11 is provided on the outer ring surface of the sandwich tube 9 and located behind the circular hole 10, and the connecting hole 11 is not connected with the interlayer of the sandwich tube 9. A plurality of ventilation holes 13 connected with the interlayer of the sandwich tube 9 are provided on the inner ring surface of the sandwich tube 9, and the ventilation holes 13 are located behind the connecting holes 11. A row of slot holes 14 is provided on the front of the material barrel 7, and a mixing chamber 15 connected with the lower end is provided inside the center main axis 2. The upper end of the center main axis 2 is provided with a mixing chamber 15 connected with the lower end. There are multiple long holes 16 connected to the inside of the mixing chamber 15, and a feeding structure 3 is installed on the upper end of each long hole 16. An inner shaft 27 is rotatably inserted at the axis of the central main shaft 2. One end of the inner shaft 27 located inside the mixing chamber 15 is fixedly sleeved with two spiral feeding plates B28. A plurality of stirring cross bars 29 are fixed on the outer ring surface of the inner shaft 27. The stirring cross bars 29 are located inside the mixing chamber 15, and the stirring cross bars 29 are located above the spiral feeding plates B28. A motor A30 is fixed to the upper end surface of the central main shaft 2, and the output end of the motor A30 is fixed to the upper end of the inner shaft 27. The motor A30 drives the spiral feeding plate B28 and the stirring cross bars 29 to rotate through the inner shaft 27. When the stirring cross bars 29 rotate, the added raw materials can be preliminarily mixed, and then when the spiral feeding plate B28 rotates, it has a tendency to transport the raw materials downward.

[0027] The feeding structure 3 includes a bending tube 31 and a discharge hopper 32. The lower end of the discharge hopper 32 is fixedly sleeved on the upper end of the bending tube 31. The lower end of the bending tube 31 is fixedly inserted into the inside of the long hole 16. The upper end of the bending tube 31 is rotatably inserted with a spiral feeding plate A33. The upper end of the discharge hopper 32 is rotatably sleeved on the upper end of the spiral feeding plate A33. The end of the spiral feeding plate A33 located above the discharge hopper 32 is fixedly sleeved with a driven gear 34. The side of the driven gear 34 away from the central main shaft 2 is meshed with a toothed plate combination structure 35, and the toothed plate combination structure 35 is fixed to the mixing main cylinder 1.

[0028] The tooth plate assembly structure 35 includes a fixed arc tooth plate 351 and a movable arc tooth plate 352. The fixed arc tooth plate 351 and the movable arc tooth plate 352 are both coaxially arranged with the central main shaft 2. The bottom surface of the movable arc tooth plate 352 is slidably inserted into the upper surface of the fixed arc tooth plate 351. The side of the fixed arc tooth plate 351 away from the central main shaft 2 is fixed to the mixing main cylinder 1. The multiple driven gears 34 are staggered in a spiral step shape with the axis of the central main shaft 2, so that the driven gears 34 can only be aligned with the same level. The fixed arc tooth plate 351 and the movable arc tooth plate 352 are meshed. When the central main shaft 2 drives the driven gear 34 to rotate around the axis of the central main shaft 2 through the bending tube 31 and the discharge hopper 32, the driven gears 34 at different heights are driven to mesh with the movable arc tooth plates 352 and the fixed arc tooth plates 351 at different levels. When the driven gear 34 rotates, it drives the spiral feeding plate A33 to rotate and pushes the raw materials in the discharge hopper 32 into the mixing chamber 15 through the bending tube 31 and the long hole 16.

[0029] A bolt pressing rod 353 is provided on the upper surface of the fixed arc-toothed plate 351 , and the movable arc-toothed plate 352 is threadedly sleeved on the outer surface of the bolt pressing rod 353 .

[0030] After loosening the bolt pressure rod 353, the movable arc tooth plate 352 can be pushed to rotate relative to the fixed arc tooth plate 351, thereby changing the arc length between the fixed arc tooth plate 351 and the movable arc tooth plate 352, controlling the number of rotations of the driven gear 34 after meshing therewith, and then controlling the volume of raw materials in different discharge hoppers 32 entering the mixing chamber 15 when the central main shaft 2 rotates one circle, thereby controlling the proportion of raw materials added.

[0031] A stabilizing ring plate 36 is fixedly sleeved on the upper surface of the mixing main cylinder 1, and multiple discharge hoppers 32 are located on the inner ring side of the stabilizing ring plate 36. The side of each discharge hopper 32 away from the mixing main cylinder 1 is slidably inserted into the inner ring surface of the stabilizing ring plate 36. When the central main shaft 2 drives the discharge hopper 32 to rotate through the bending tube 31, the discharge hopper 32 rotates on the inner ring side of the stabilizing ring plate 36, thereby improving the stability of the discharge hopper 32 during rotation.

[0032] An air supply structure 4 is rotatably mounted on one end of the interlayer cylinder 9 close to the center ring 6 , and a transmission structure 5 is mounted on the outer surface of the interlayer cylinder 9 . The transmission structure 5 is mounted on the inner top wall of the mixing main cylinder 1 .

[0033] The transmission structure 5 includes three arc-shaped tooth plates 51, a spur gear B52 and a protective ring cover 53. The protective ring cover 53 is fixed to the air supply structure 4. A conical gear cylinder B54 is arranged on the inner side of the protective ring cover 53. The conical gear cylinder B54 is fixed to the interlayer cylinder 9. A bevel gear B55 is meshed on the left side of the conical gear cylinder B54. The upper end of the bevel gear B55 rotates and penetrates the inner wall of the protective ring cover 53. The spur gear B52 is fixedly sleeved on the upper end of the bevel gear B55. The three arc-shaped tooth plates 51 are all fixed to the inner top wall of the mixing main cylinder 1. The three arc-shaped tooth plates 51 are all fixed to the inner top wall of the mixing main cylinder 1. It is coaxially arranged with the central main shaft 2, and the outer annular surface of the spur gear B52 is tangent to the inner annular surface of the arc-shaped tooth plate 51. When the spur gear B52 is respectively meshed with the three arc-shaped tooth plates 51, it drives the interlayer cylinder 9 to rotate intermittently. The interlayer cylinder 9 first drives the connecting hole 11 to connect with the circular hole 10 and the lower end of the mixing chamber 15, and then drives a row of material troughs 12 to connect with the slot hole 14 of the material barrel 7 when the interlayer cylinder 9 continues to rotate. Then, when the interlayer cylinder 9 continues to rotate until another row of material troughs 12 is connected with the slot hole 14, the vent hole 13 is connected with the circular hole 10 at the same time.

[0034] The air supply structure 4 includes a ring 41 and a ventilation pipe 42. The ring 41 is rotatably sleeved on the outer surface of the interlayer tube 9. The interior of the ventilation pipe 42 is connected to the interior of the interlayer tube 9. The upper end of the ventilation pipe 42 is fixedly sleeved with a bottom ring 43. The bottom ring 43 is coaxial with the central main axis 2. The outer ring surface of the bottom ring 43 is rotatably sleeved with an air cavity ring 44. The upper surface of the air cavity ring 44 is fixedly connected with an air supply pump 45. The air supply pump 45 is fixedly penetrated through the inner top wall of the mixing main tube 1. The air supply pump 45 fills the interlayer tube 9 with air through the air cavity ring 44 and the ventilation pipe 42. The interlayer tube 9 can rotate relative to the ring 41. When the central main axis 2 rotates, the bottom ring 43 is driven to rotate on the bottom surface of the air cavity ring 44 through the ventilation pipe 42.

[0035] The working principle is as follows: when mixing concrete, different raw materials are added into different discharge hoppers 32. When the motor B303 drives the central spindle 2 to rotate through the engagement of the driving gear 302 with the outer gear ring 301, the central spindle 2 drives the driven gear 34 to rotate around the axis of the central spindle 2 through the bending tube 31 and the discharge hopper 32, driving the driven gears 34 at different heights to engage with the movable arc tooth plates 352 and the fixed arc tooth plates 351 at different levels. When the driven gear 34 rotates, it drives the screw The feed plate A33 rotates to push the raw materials in the hopper 32 into the mixing chamber 15 through the bent tube 31 and the long hole 16. The motor A30 drives the spiral feed plate B28 and the stirring cross bar 29 to rotate through the inner shaft 27. When the stirring cross bar 29 rotates, the added raw materials can be preliminarily mixed. Then, when the spiral feed plate B28 rotates, it has a tendency to transport the raw materials downward. The air supply pump 45 fills the interlayer tube 9 with air through the air cavity ring 44 and the vent pipe 42. The central main shaft 2 drives the material handling through the central ring 6. The cylinder 7 rotates around the central main shaft 2, and when the spur gear B52 is respectively engaged with the three arc-shaped tooth plates 51, the interlayer cylinder 9 is driven to rotate intermittently. The interlayer cylinder 9 first drives the connecting hole 11 to communicate with the circular hole 10 and the lower end of the mixing chamber 15, and the raw materials in the mixing chamber 15 are added to the material barrel 7 through the connecting hole 11 and the circular hole 10. Then, when the interlayer cylinder 9 continues to rotate, it drives a row of material troughs 12 to communicate with the slots 14 of the material barrel 7, so that the concrete material in the mixing main cylinder 1 passes through the material troughs 12 and the slots. 14 enters into the material barrel 7, so that the concrete material in the material barrel 7 is first mixed with the added raw materials. Then, when the interlayer cylinder 9 continues to rotate to another row of material troughs 12 and the slot holes 14 are connected, the vent holes 13 are connected with the circular holes 10 at the same time, and the air flow in the interlayer cylinder 9 is filled into the material barrel 7 through the vent holes 13, and the pre-mixed materials in the material barrel 7 are pushed out from the material troughs 12 and the slot holes 14, so that the pre-mixed materials enter the concrete, which can effectively prevent the newly added raw materials from splashing during mixing.

[0036] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A concrete mixing device for conveniently controlling water-cement ratio, comprising a mixing main drum (1), characterized in that: The inner side of the mixing main cylinder (1) is provided with a central main shaft (2), the upper end of the central main shaft (2) rotates and penetrates the inner top wall of the mixing main cylinder (1), the lower end of the central main shaft (2) is fixedly sleeved with a central ring (6), the inner ring surface of the central ring (6) is fixedly plugged with a material handling cylinder (7), one end of the material handling cylinder (7) located on the right side of the central ring (6) is coaxially sleeved with a concentric cylinder (8), an interlayer cylinder (9) is provided on the left side of the central ring (6), the right end of the interlayer cylinder (9) is rotatably plugged between the material handling cylinder (7) and the central ring (6), a circular hole (10) coaxial with the central main shaft (2) is opened on the upper surface of the material handling cylinder (7), the inner side of the interlayer cylinder (9) is in an interlayer shape, and two rows of material passage grooves (12) are opened on the outer ring surface of the interlayer cylinder (9) and located on the left side of the central ring (6), the material passage grooves (12) are not connected to the interlayer of the interlayer cylinder (9), and the interlayer cylinder (9) A connecting hole (11) is provided on the outer annular surface of the interlayer cylinder (9) and is located behind the circular hole (10). The connecting hole (11) is not connected to the interlayer of the interlayer cylinder (9). A plurality of vent holes (13) connected to the interlayer of the interlayer cylinder (9) are provided on the inner annular surface of the interlayer cylinder (9). The vent holes (13) are located behind the connecting hole (11). A row of slot holes (14) is provided on the front of the material cylinder (7). A mixing chamber (15) connected to the lower end is provided inside the central main shaft (2). A plurality of long holes (16) connected to the inside of the mixing chamber (15) are provided at the upper end of the central main shaft (2). A feeding structure (3) is installed at the upper end of each long hole (16). An air supply structure (4) is rotatably installed at one end of the interlayer cylinder (9) close to the central ring (6). A transmission structure (5) is installed on the outer surface of the interlayer cylinder (9). The transmission structure (5) is installed on the inner top wall of the mixing main cylinder (1).

2. A concrete mixing device for controlling water-cement ratio according to claim 1, characterized in that: The outer annular surface of the concentric cylinder (8) is rotatably sleeved with a shielding ring cover (17), the other end of the shielding ring cover (17) is fixedly sleeved on the outer surface of the center ring (6), the outer surface of the concentric cylinder (8) and located inside the shielding ring cover (17) is fixedly sleeved with a conical gear cylinder A (18), the left side of the conical gear cylinder A (18) is meshed with a bevel gear A (19), the upper end of the bevel gear A (19) rotates through the inner annular surface of the shielding ring cover (17), the upper end of the bevel gear A (19) is fixedly sleeved with a spur gear A (20), the inner top wall of the mixing main cylinder (1) is fixedly mounted with an inner gear ring (21), the spur gear A (20) meshes with the inner annular surface of the inner gear ring (21), and the outer annular surface of the concentric cylinder (8) is fixed with multiple rows of stirring rods (22).

3. A concrete mixing device for controlling water-cement ratio according to claim 2, characterized in that: A disc (23) is fixedly inserted inside the material barrel (7) and on the right side of the circular hole (10), a prism shaft (24) is slidably penetrated through the left side of the disc (23), a plurality of material shifting plates (25) are fixed to one end of the prism shaft (24) located on the left side of the disc (23), a reciprocating screw rod (26) is threadedly inserted at the right end of the prism shaft (24), and the right end of the reciprocating screw rod (26) is fixed to the right inner wall of the concentric barrel (8).

4. A concrete mixing device for controlling water-cement ratio according to claim 1, characterized in that: The transmission structure (5) comprises three arc-shaped toothed plates (51), a spur gear B (52) and a protective ring cover (53). The protective ring cover (53) is fixed to the air supply structure (4). A conical gear cylinder B (54) is arranged on the inner side of the protective ring cover (53). The conical gear cylinder B (54) is fixed to the interlayer cylinder (9). A bevel gear B (55) is meshed on the left side of the conical gear cylinder B (54). The upper end of the bevel gear B (55) rotates and penetrates the inner wall of the protective ring cover (53). The spur gear B (52) is fixedly sleeved on the upper end of the bevel gear B (55). The three arc-shaped toothed plates (51) are all fixed to the inner top wall of the mixing main cylinder (1). The three arc-shaped toothed plates (51) are all coaxially arranged with the central main shaft (2). The outer annular surface of the spur gear B (52) is tangent to the inner annular surface of the arc-shaped toothed plates (51).

5. A concrete mixing device for controlling water-cement ratio according to claim 4, characterized in that: The air supply structure (4) comprises a sleeve ring (41) and a vent pipe (42); the sleeve ring (41) is rotatably sleeved on the outer surface of the interlayer cylinder (9); the interior of the vent pipe (42) is connected to the interior of the interlayer cylinder (9); a bottom ring (43) is fixedly sleeved on the upper end of the vent pipe (42); the bottom ring (43) is coaxial with the central main axis (2); an air cavity ring (44) is rotatably sleeved on the outer ring surface of the bottom ring (43); the upper surface of the air cavity ring (44) is fixedly connected to an air supply pump (45); and the air supply pump (45) is fixedly penetrated through the inner top wall of the mixing main cylinder (1).

6. A concrete mixing device for controlling water-cement ratio according to claim 1, characterized in that: The feeding structure (3) comprises a bending tube (31) and a discharge hopper (32), the lower end of the discharge hopper (32) being fixedly sleeved on the upper end of the bending tube (31), the lower end of the bending tube (31) being fixedly inserted into the interior of the long hole (16), the upper end of the bending tube (31) being rotatably inserted with a spiral feeding plate A (33), the upper end of the discharge hopper (32) being rotatably sleeved on the upper end of the spiral feeding plate A (33), the end of the spiral feeding plate A (33) located above the discharge hopper (32) being fixedly sleeved with a driven gear (34), the side of the driven gear (34) away from the central main shaft (2) being meshed with a toothed plate assembly structure (35), the toothed plate assembly structure (35) being fixed to the mixing main cylinder (1); The tooth plate assembly structure (35) comprises a fixed arc tooth plate (351) and a movable arc tooth plate (352); the fixed arc tooth plate (351) and the movable arc tooth plate (352) are both coaxially arranged with the central main shaft (2); the bottom surface of the movable arc tooth plate (352) is slidably inserted into the upper surface of the fixed arc tooth plate (351); a surface of the fixed arc tooth plate (351) away from the central main shaft (2) is fixed to the mixing main barrel (1); a bolt pressure rod (353) is arranged in contact with the upper surface of the fixed arc tooth plate (351); and the movable arc tooth plate (352) is threadedly sleeved on the outer surface of the bolt pressure rod (353).

7. The concrete mixing equipment for controlling water-cement ratio according to claim 1, characterized in that: An inner shaft (27) is rotatably inserted at the axis of the central main shaft (2); one end of the inner shaft (27) located inside the mixing chamber (15) is fixedly sleeved with two spiral feed plates B (28); a plurality of stirring cross bars (29) are fixed to the outer ring surface of the inner shaft (27); the stirring cross bars (29) are located inside the mixing chamber (15); the stirring cross bars (29) are located above the spiral feed plates B (28); a motor A (30) is fixed to the upper end surface of the central main shaft (2); and the output end of the motor A (30) is fixed to the upper end of the inner shaft (27).

8. The concrete mixing equipment for controlling water-cement ratio according to claim 6, characterized in that: The plurality of driven gears (34) are staggeredly distributed in a spiral step-like manner about the axis of the central main shaft (2); a stabilizing ring plate (36) is fixedly sleeved on the upper surface of the mixing main barrel (1); the plurality of discharge hoppers (32) are all located on the inner ring side of the stabilizing ring plate (36); and a side of each discharge hopper (32) away from the mixing main barrel (1) is slidably plugged into the inner ring surface of the stabilizing ring plate (36).

9. The concrete mixing equipment for controlling water-cement ratio according to claim 1, characterized in that: An end of the central main shaft (2) located above the mixing main cylinder (1) is fixedly sleeved with an outer gear ring (301), an outer ring surface of the outer gear ring (301) is meshed with a driving gear (302), a motor B (303) is fixedly mounted on the upper surface of the mixing main cylinder (1), and the driving gear (302) is fixedly sleeved on the output end of the motor B (303).

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