Concrete mixing plant with dust falling function

Abstract

The invention discloses a concrete mixing plant with a dust falling function, and relates to the technical field of concrete mixing plants, the concrete mixing plant comprises a powder conveying device, an aggregate conveying device, a mixing mechanism and two dust falling mechanisms, a powder tank conveys cement to a mixing bin through a screw feeder, and the two dust falling mechanisms are arranged in the mixing bin; the aggregate batching machine inputs aggregate into the stirring bin through the aggregate conveying mechanism, automatic batching is achieved, the stirring mechanism is provided with the double bins and the stirring bin, feeding and discharging of materials are controlled through the opening and closing unit, the stirring bin is provided with the stirring shaft, the adjustable stirring paddle and the conveying assembly, the conveying speed can be dynamically adjusted according to stirring resistance, and mixing uniformity is improved; the first dust falling mechanism collects dust in aggregate conveying through a negative pressure fan and a centrifugal dust removal device, and the second dust falling mechanism forms a water curtain in a stirring bin through an annular atomization nozzle to adsorb flying dust, so that dust pollution is effectively controlled while the concrete production efficiency of the stirring station is improved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete mixing stations, in particular to a concrete mixing station with a dust reduction function. Background Art

[0002] A large amount of dust will be generated during the stacking, transportation and mixing of concrete raw materials such as sand, gravel and cement, resulting in excessively high dust concentration in the working environment of the concrete mixing station. Long-term inhalation may lead to occupational diseases such as pneumoconiosis, which is not conducive to protecting the health of workers.

[0003] During the concrete mixing process, coarse aggregates in the concrete, such as crushed stone and other high-density aggregates, tend to form a sedimentary layer at the bottom of the mixing tank. Traditional blades are difficult to completely turn over, resulting in a low sand ratio and insufficient slurry in the bottom concrete, and a significant strength difference with the upper material. The coarse aggregates deposited at the bottom tend to accumulate at the discharge port, causing blockage, resulting in poor unloading, requiring manual unblocking, and extending the unloading time. To make up for the uneven mixing at the bottom, the mixing time needs to be extended, resulting in a decrease in production efficiency, and the cement particles that are not fully mixed remain at the bottom, resulting in incomplete hydration reaction and an increased risk of shrinkage and cracking after hardening. Summary of the invention

[0004] The object of the present invention is to provide a concrete mixing station with a dust reduction function to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The invention provides a technical solution for a concrete mixing station with a dust reduction function. The concrete mixing station with a dust reduction function comprises a powder tank, a screw feeder, an aggregate batching machine, an aggregate conveying mechanism, a mixing mechanism, a first dust reduction mechanism and a second dust reduction mechanism. The powder tank is fixedly connected to the screw feeder, the screw feeder is fixedly connected to the mixing mechanism, the aggregate batching machine is fixedly connected to the aggregate conveying mechanism, the aggregate conveying mechanism is fixedly connected to the mixing mechanism, the first dust reduction mechanism is fixedly connected to the aggregate conveying mechanism, and the second dust reduction mechanism is fixedly connected to the mixing mechanism.

[0007] The screw feeder and the powder tank are fixed, and the feed port of the screw feeder is connected with the discharge port of the powder tank, so that the cement powder in the powder tank can be transported to the mixing mechanism through the screw feeder, and the aggregate batching machine and the aggregate conveying mechanism are fixedly connected. The aggregate conveying mechanism is a conveyor belt and an auger conveyor, and the discharge end of the aggregate batching machine is located above the conveyor belt. After the aggregate batching machine outputs the aggregate through the discharge end, the aggregate is transported to the auger conveyor via the conveyor belt and then to the mixing mechanism, so as to realize the automatic transportation of cement powder and aggregate. The No. 1 dust reduction mechanism and the aggregate conveying mechanism are connected through a pipeline. The No. 1 dust reduction mechanism generates negative pressure, so that the air containing dust in the aggregate conveying mechanism is transported to the No. 1 dust reduction mechanism through the pipeline to remove dust, so as to prevent the dust-carrying gas from diffusing into the air, and the No. 2 dust reduction mechanism generates water mist in the mixing mechanism to absorb the dust generated when mixing concrete in the mixing mechanism.

[0008] Furthermore, the mixing mechanism includes a main building, stairs, a discharging hopper, a mixing bin, a silo and an opening and closing unit. The main building is fixedly connected to the stairs, the discharging hopper is fixedly connected to the mixing bin, two silos are provided, one is fixedly connected to the screw feeder, and the other is fixedly connected to the aggregate conveying mechanism, the mixing bin and the discharging hopper are fixedly connected, the silo and the mixing bin are fixedly connected, three opening and closing units are provided, two of which are fixedly connected to the silo, one is fixedly connected to the mixing bin, and the mixing bin is fixedly connected to the No. 2 dust reduction mechanism.

[0009] The main building is used as a load-bearing frame, and stairs are set outside the main building to form an inspection passage, so as to facilitate the inspection of components on the main building. There are two silos, one silo feed port and the screw feeder discharge port are fixedly connected, so that cement powder is transported to the silo, and the other silo feed port is fixedly connected to the auger conveyor discharge port of the aggregate conveying mechanism, so that water aggregate is transported to another silo. Through the weighing structure set in the silo, the conveying of cement powder and aggregate is stopped after the aggregate and cement reach a predetermined ratio. The discharge port of the silo is opened through the opening and closing unit, so that the cement powder and aggregate in the two silos fall into the mixing silo below, and the cement powder and aggregate are mixed through the mixing silo. After the concrete is mixed evenly, the discharge port of the mixing silo is opened through the opening and closing unit, so that the evenly mixed concrete falls into the discharge hopper for discharging.

[0010] Furthermore, the mixing chamber includes a mixing barrel, a No. 1 motor, a mixing shaft, a mixing paddle, a transmission assembly, a conveying assembly and an adjusting assembly. The mixing barrel and the discharge hopper are fixedly connected, the No. 1 motor and the mixing barrel are fixedly connected, the output end of the No. 1 motor and the mixing shaft are fixedly connected, a plurality of mixing paddles are provided, the plurality of mixing paddles are rotatably connected to the mixing shaft, the transmission assembly is connected to the mixing shaft, the mixing shaft is provided with a conveying channel, the conveying assembly is placed in the conveying channel, the conveying assembly and the transmission assembly are fixedly connected, and the adjusting assembly and the mixing paddle are fixedly connected.

[0011] The output end of motor No. 1 is fixedly connected to the stirring shaft, so that motor No. 1 drives the stirring shaft to rotate, and the stirring shaft drives the stirring paddle to rotate, so that the stirring paddle stirs the concrete, and the transmission component is used to drive the conveying component to rotate, so that the bottom concrete is conveyed to the upper part, so that the bottom concrete and the cement slurry in the middle and upper parts are re-wrapped, and the sinking of aggregates is reduced to reduce uneven mixing. The stirring paddle and the stirring shaft are rotatably connected, so that the stirring paddle can rotate according to the degree of concrete mixing during the mixing process, thereby changing the inclination angle of the stirring paddle, and the adjustment component is fixedly connected to a stirring paddle at the bottom, so that the adjustment component is driven when the stirring paddle rotates, and the transmission ratio of the transmission component is changed by the adjustment component, so as to control the conveying speed of the conveying component and avoid concrete blocking the conveying channel.

[0012] Furthermore, the transmission assembly includes a ring gear, a No. 1 gear, a No. 2 gear, a No. 1 rotating shaft and a planetary carrier. The ring gear is fixedly connected to the stirring shaft. There are three No. 1 gears. The three No. 1 gears are meshed with the ring gear. The No. 2 gear is meshed with the three No. 1 gears. The No. 1 rotating shaft is fixedly connected to the No. 1 gear. The No. 1 rotating shaft is rotatably connected to the planetary carrier. The planetary carrier is rotatably connected to the stirring shaft. The No. 2 gear is fixedly connected to the conveying assembly.

[0013] The ring gear and the stirring shaft are fixedly connected so that the ring gear rotates synchronously with the stirring shaft, the three No. 1 gears are meshed with the ring gear, so that the ring gear drives the three No. 1 gears to rotate, the No. 2 gear is meshed with the three No. 1 gears, so that the three No. 1 gears drive the No. 2 gear to rotate, and the No. 2 gear is fixedly connected with the conveying assembly so that the conveying assembly rotates synchronously with the No. 2 gear, the No. 1 rotating shaft and the No. 1 gear are fixedly connected, the No. 1 rotating shaft and the planetary carrier are rotationally connected so that the planetary carrier supports the three No. 1 gears, and the planetary carrier is rotationally connected with the stirring shaft, and the planetary carrier is changed between synchronous rotation with the stirring shaft or differential rotation through the adjustment component. When the planetary carrier rotates synchronously with the stirring shaft, the planetary carrier is stationary relative to the stirring shaft. When the planetary carrier and the stirring shaft rotate differentially and rotate in the same direction as the stirring shaft, the transmission ratio of the No. 1 gear and the No. 2 gear is reduced, thereby reducing the No. 1 gear and fixing the planetary carrier on the stirring shaft.

[0014] Furthermore, the adjustment assembly includes gear No. 3, rack, limit block, connecting rod No. 1, slider, return spring and connecting rod No. 2, gear No. 3 is fixedly connected to the stirring paddle, the rack is meshed with gear No. 3, the stirring shaft is provided with a sliding groove, the rack is slidably connected to the sliding groove, the limit block is fixedly connected to the stirring paddle, connecting rod No. 1 is fixedly connected to the planetary carrier, the slider is rotatably connected to connecting rod No. 1, the return spring is fixedly connected to the limit block, and connecting rod No. 2 is fixedly connected to the rack.

[0015] The third gear and the stirring paddle are fixedly connected. When the concrete is just being mixed, the stirring resistance is large, so the stirring paddle rotates, and the third gear rotates with the stirring paddle. The rack and the third gear are meshed, and the third gear drives the rack to slide in the sliding groove. At the same time, the rotation angle of the stirring paddle is limited by the limit block to prevent the material from directly flowing through the stirring paddle due to excessive gravity force instead of being pushed by the stirring paddle spiral, resulting in a decrease in mixing efficiency. The rack drives the second connecting rod to slide upward, and the second connecting rod abuts against the slider, so that the slider rotates along the connection of the first connecting rod, so that the second connecting rod slides into the first connecting rod, and the slider is reset under the action of the torsion spring set at the rotation connection of the first connecting rod, so that the planetary carrier is fixed, the rotation rate of the conveying assembly is accelerated, and then the conveying rate is accelerated, thereby accelerating the concrete mixing rate and improving production efficiency. When the concrete is gradually mixed evenly and the resistance is reduced, the limit block is reset under the action of the reset spring, and the second connecting rod slides out of the first connecting rod, so that the planetary carrier rotates in the same direction as the stirring shaft, reducing the transmission ratio, thereby reducing the conveying rate and reducing the energy consumption of the motor.

[0016] Furthermore, the conveying assembly includes a No. 2 rotating shaft and a spiral blade, the No. 2 rotating shaft and the stirring shaft are rotatably connected, the No. 2 rotating shaft and the No. 2 gear are fixedly connected, the spiral blade and the No. 2 rotating shaft are fixedly connected, and the stirring shaft is provided with a groove, which is connected to the conveying channel.

[0017] The No. 2 rotating shaft is driven to rotate by the No. 2 gear, so that the spiral blade rotates with the No. 2 rotating shaft, thereby conveying the concrete at the bottom into the conveying channel. The concrete at the bottom is output through the slots and covers the concrete on the upper part, avoiding the low sand ratio and insufficient slurry of the bottom concrete, and the obvious strength difference with the upper material.

[0018] Furthermore, the second dust reduction mechanism includes a fixed rod, a nozzle, a water pump and a water tank. The fixed rod and the stirring shaft are rotatably connected, the fixed rod and the nozzle are fixedly connected, the water pump and the nozzle are connected by a pipeline, and the water pump and the water tank are connected by a pipeline.

[0019] The nozzle is fixed inside the mixing barrel by a fixing rod, and is connected to the water pump and the water tank pipe. The water pump and the nozzle pipe are connected so that the water pump transports the water from the water tank to the nozzle for spraying. The nozzle is annular and is provided with an atomizing nozzle, so that the water forms a mist and sprays out 360 degrees to cover the upper part of the mixing barrel, thereby absorbing the dust generated during mixing, thereby achieving the effect of dust reduction.

[0020] Furthermore, the No. 1 dust reduction mechanism includes a negative pressure fan, a cylinder, guide vanes, a dust filter, a collecting box and a mounting frame. The negative pressure fan and the cylinder are connected by a pipeline. The cylinder is provided with an empty slot, and the guide vanes are placed in the empty slot. The dust filter and the negative pressure fan are fixedly connected, the collecting box and the empty slot are fixedly connected, the mounting frame and the negative pressure fan are fixedly connected, and the mounting frame and the collecting box are fixedly connected.

[0021] The negative pressure fan generates negative pressure, so that the dust-containing air in the aggregate conveying mechanism is transported to the empty slot of the cylinder through the pipeline. The guide vanes placed in the empty slot make the dust-containing air form a spiral airflow and flow toward the inner wall of the cylinder. The large dust particles in the air are thrown to the inner wall of the cylinder due to the centrifugal force and fall into the collection box along the inner wall of the cylinder. The gas is transported to the negative pressure fan through the pipeline, and then the small dust particles in the air are filtered out by the dust removal filter fixed in front of the negative pressure fan, and then the gas is discharged into the air, thereby achieving the function of dust reduction.

[0022] Furthermore, the opening and closing unit includes a No. 2 motor, a baffle, a No. 3 rotating shaft, a fixed block and a transmission belt. One end of the transmission belt is sleeved on the output end of the No. 2 motor, and the other end of the transmission belt is sleeved on the No. 3 rotating shaft. The baffle is fixedly connected to the No. 3 rotating shaft. Two fixed blocks are provided, and the No. 3 rotating shaft and the fixed block are rotatably connected.

[0023] One end of the transmission belt is sleeved on the output end of the No. 2 motor, and the other end of the transmission belt is sleeved on the No. 3 rotating shaft, so that the No. 2 motor can drive the transmission belt to drive the No. 3 rotating shaft to rotate. The baffle is fixedly connected to the No. 3 rotating shaft, thereby rotating the baffle to open or close the discharge port of the mixing bin and the silo. The baffle is rotatably connected to the No. 3 rotating shaft through two fixed blocks, thereby supporting both ends of the baffle.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The water in the water tank is transported to the nozzle through a water pump to spray out, so that the water forms water mist and sprays out 360 degrees to cover the upper part of the mixing barrel, so as to absorb the dust generated during mixing. The negative pressure fan generates negative pressure, so that the air containing dust in the aggregate conveying mechanism is transported to the empty slot of the cylinder through the pipeline. The guide blades make the dust-containing air form a spiral airflow to flow toward the inner wall of the cylinder. Large particles of dust fall into the collection box, and small particles of dust in the air are filtered out by the dust removal filter. Then the gas is discharged into the air, so as to reduce the large amount of dust generated during the stacking, transportation and mixing of concrete raw materials, avoid excessive dust concentration in the working environment of the concrete mixing station, and protect the health of workers.

[0026] 2. The No. 2 rotating shaft is driven to rotate by the No. 2 gear, so that the spiral blade rotates with the No. 2 rotating shaft, thereby conveying the concrete at the bottom into the conveying channel. The concrete at the bottom is output through the slots and covers the upper concrete, avoiding obvious strength differences between the bottom concrete and the upper material, compensating for the uneven mixing at the bottom, reducing the mixing time, thereby improving the mixing efficiency, and avoiding the residual of incompletely mixed cement particles at the bottom, resulting in incomplete hydration reaction, thereby reducing the risk of shrinkage cracking after hardening.

[0027] 3. By adjusting the components, when the stirring resistance is large, the rotation rate of the conveying component is accelerated, and then the conveying rate is accelerated, thereby speeding up the concrete mixing rate and improving production efficiency. When the concrete is gradually mixed evenly and the resistance is reduced, the rotation rate of the conveying component is reduced, thereby reducing the conveying rate, reducing motor energy consumption, reducing frequent motor start and stop and high-load operating time, and reducing mechanical wear and inverter failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 2 yes Figure 1 A magnified view of a part A;

[0030] Figure 3 It is a structural schematic diagram of the stirring mechanism of the present invention;

[0031] Figure 4 yes Figure 3 A partial enlarged view of B;

[0032] Figure 5 It is a structural schematic diagram of the transmission assembly of the present invention;

[0033] Figure 6 yes Figure 5 A partial enlarged view of C;

[0034] Figure 7 This is a schematic diagram of the connection between the third gear, the rack and the stirring paddle of the present invention;

[0035] Figure 8 This is a schematic diagram of the connection between the stirring paddle and the limit block of the present invention;

[0036] Fig. 9 It is a structural schematic diagram of the nozzle of the present invention;

[0037] Fig.10 It is a structural schematic diagram of the first dust suppression mechanism of the present invention;

[0038] Fig.11 It is a structural schematic diagram of the opening and closing unit of the present invention.

[0039] In the figure: 1. powder tank; 2. screw feeder; 3. aggregate batching machine; 4. aggregate conveying mechanism; 5. mixing mechanism; 51. main building; 52. stairs; 53. discharge hopper; 54. mixing bin; 541. mixing barrel; 542. No. 1 motor; 543. mixing shaft; 5431. conveying channel; 5432. sliding groove; 5433. slotting; 544. stirring paddle; 545. transmission assembly; 5451. gear ring; 5452. No. 1 gear; 5453. No. 2 gear; 5454. No. 1 rotating shaft; 5455. planetary carrier; 546. conveying assembly; 5461. No. 2 rotating shaft; 5462. spiral blade; 547. adjustment Components; 5471, gear No. 3; 5472, rack; 5473, limit block; 5474, connecting rod No. 1; 5475, slider; 5476, reset spring; 5477, connecting rod No. 2; 55, silo; 56, opening and closing unit; 561, motor No. 2; 562, baffle; 563, rotating shaft No. 3; 564, fixed block; 565, transmission belt; 6, dust suppression mechanism No. 1; 61, negative pressure fan; 62, cylinder; 621, empty slot; 63, guide blade; 64, dust filter; 65, collection box; 66, mounting frame; 7, dust suppression mechanism No. 2; 71, fixed rod; 72, nozzle; 73, water pump; 74, water tank. DETAILED DESCRIPTION

[0040] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0041] Example: Figure 1 and Figure 2 As shown, the present invention provides a technical solution for a concrete mixing station with a dust reduction function, a concrete mixing station with a dust reduction function, the mixing station comprising a powder tank 1, a screw feeder 2, an aggregate batching machine 3, an aggregate conveying mechanism 4, a mixing mechanism 5, a first dust reduction mechanism 6 and a second dust reduction mechanism 7, the powder tank 1 and the screw feeder 2 are fixedly connected, the screw feeder 2 and the mixing mechanism 5 are fixedly connected, the aggregate batching machine 3 and the aggregate conveying mechanism 4 are fixedly connected, the aggregate conveying mechanism 4 and the mixing mechanism 5 are fixedly connected, the first dust reduction mechanism 6 and the aggregate conveying mechanism 4 are fixedly connected, and the second dust reduction mechanism 7 and the mixing mechanism 5 are fixedly connected.

[0042] The screw feeder 2 and the powder tank 1 are fixed, and the feed port of the screw feeder 2 is connected with the discharge port of the powder tank 1, so that the cement powder in the powder tank 1 can be transported to the mixing mechanism 5 through the screw feeder 2, and the aggregate batching machine 3 and the aggregate conveying mechanism 4 are fixedly connected. The aggregate conveying mechanism 4 is a conveyor belt and an auger conveyor, and the discharge end of the aggregate batching machine 3 is located above the conveyor belt. After the aggregate batching machine 3 outputs the aggregate through the discharge end, the aggregate is transported to the auger conveyor via the conveyor belt and then transported to the mixing mechanism 5, so as to realize the automatic transportation of cement powder and aggregate. The No. 1 dust reduction mechanism 6 and the aggregate conveying mechanism 4 are connected through a pipeline. The No. 1 dust reduction mechanism 6 generates negative pressure, so that the air containing dust in the aggregate conveying mechanism 4 is transported to the No. 1 dust reduction mechanism 6 through the pipeline to remove dust, so as to prevent the dust-carrying gas from diffusing into the air, and the No. 2 dust reduction mechanism 7 generates water mist in the mixing mechanism 5 to absorb the dust generated when the concrete is mixed in the mixing mechanism 5.

[0043] like Figure 1-Figure 3 As shown, the mixing mechanism 5 includes a main building 51, a staircase 52, a discharge hopper 53, a mixing bin 54, a silo 55 and an opening and closing unit 56. The main building 51 is fixedly connected to the staircase 52, the discharge hopper 53 is fixedly connected to the mixing bin 54, two silos 55 are provided, one silo 55 is fixedly connected to the screw feeder 2, and the other silo 55 is fixedly connected to the aggregate conveying mechanism 4, the mixing bin 54 is fixedly connected to the discharge hopper 53, the silo 55 is fixedly connected to the mixing bin 54, three opening and closing units 56 are provided, two opening and closing units 56 are fixedly connected to the silo 55, one opening and closing unit 56 is fixedly connected to the mixing bin 54, and the mixing bin 54 is fixedly connected to the second dust reduction mechanism 7.

[0044] The main building 51 is used as a load-bearing frame, and a staircase 52 is arranged outside the main building 51 to form a maintenance passage, so as to facilitate the maintenance of the components on the main building 51. Two silos 55 are provided, and the feed port of one silo 55 is fixedly connected to the discharge port of the screw feeder 2, so that the cement powder is transported to the silo 55, and the feed port of the other silo 55 is fixedly connected to the discharge port of the auger conveyor of the aggregate conveying mechanism 4, so that the water aggregate is transported to the other silo 55. Through the weighing structure arranged in the silo 55, the conveying of cement powder and aggregate is stopped after the aggregate and cement reach a predetermined ratio, and the discharge port of the silo 55 is opened through the opening and closing unit 56, so that the cement powder and aggregate in the two silos 55 fall into the mixing silo 54 below, and the cement powder and aggregate are mixed by the mixing silo 54. After the concrete is mixed evenly, the discharge port of the mixing silo 54 is opened through the opening and closing unit 56, so that the evenly mixed concrete falls into the discharge hopper 53 for discharge.

[0045] like Figure 2-Figure 5As shown, the mixing bin 54 includes a mixing barrel 541, a motor No. 1 542, a mixing shaft 543, a mixing paddle 544, a transmission assembly 545, a conveying assembly 546 and an adjusting assembly 547. The mixing barrel 541 is fixedly connected to the discharge hopper 53, the motor No. 1 542 is fixedly connected to the mixing barrel 541, the output end of the motor No. 1 542 is fixedly connected to the mixing shaft 543, a plurality of mixing paddles 544 are provided, and the plurality of mixing paddles 544 are rotatably connected to the mixing shaft 543, the transmission assembly 545 is connected to the mixing shaft 543, the mixing shaft 543 is provided with a conveying channel 5431, the conveying assembly 546 is placed in the conveying channel 5431, the conveying assembly 546 is fixedly connected to the transmission assembly 545, and the adjusting assembly 547 is fixedly connected to the mixing paddle 544.

[0046] The output end of the No. 1 motor 542 is fixedly connected to the stirring shaft 543, so that the No. 1 motor 542 drives the stirring shaft 543 to rotate, and the stirring shaft 543 drives the stirring paddle 544 to rotate, so that the stirring paddle 544 stirs the concrete, and the stirring shaft 543 drives the conveying assembly 546 to rotate through the transmission assembly 545, so that the bottom concrete is conveyed to the upper part, so that the bottom concrete and the cement slurry in the middle and upper parts are re-wrapped, and the sinking of aggregates causes uneven mixing. The stirring paddle 544 and the stirring shaft 543 are rotatably connected, so that the stirring paddle 544 can rotate according to the degree of concrete mixing during the mixing process, thereby changing the inclination angle of the stirring paddle 544, and the adjusting assembly 547 is fixedly connected to a stirring paddle 544 at the bottom, so that the adjusting assembly 547 is driven when the stirring paddle 544 rotates, and the transmission ratio of the transmission assembly 545 is changed through the adjusting assembly 547, so as to control the conveying speed of the conveying assembly 546 and prevent the concrete from clogging the conveying channel 5431.

[0047] like Figure 5 As shown, the transmission assembly 545 includes a ring gear 5451, a number one gear 5452, a number two gear 5453, a number one rotating shaft 5454 and a planetary carrier 5455. The ring gear 5451 is fixedly connected to the stirring shaft 543. There are three number one gears 5452. The three number one gears 5452 are meshed with the ring gear 5451. The number two gear 5453 is meshed with the three number one gears 5452. The number one rotating shaft 5454 is fixedly connected to the number one gear 5452. The number one rotating shaft 5454 is rotatably connected to the planetary carrier 5455. The planetary carrier 5455 is rotatably connected to the stirring shaft 543. The number two gear 5453 is fixedly connected to the conveying assembly 546.

[0048] The ring gear 5451 is fixedly connected to the stirring shaft 543, so that the ring gear 5451 rotates synchronously with the stirring shaft 543, the three No. 1 gears 5452 are meshed with the ring gear 5451, so that the ring gear 5451 drives the three No. 1 gears 5452 to rotate, the No. 2 gear 5453 is meshed with the three No. 1 gears 5452, so that the three No. 1 gears 5452 drive the No. 2 gear 5453 to rotate, the No. 2 gear 5453 is fixedly connected to the conveying assembly 546, so that the conveying assembly 546 rotates synchronously with the No. 2 gear 5453, the No. 1 rotating shaft 5454 is fixedly connected to the No. 1 gear 5452, and the No. 1 rotating shaft 5454 is connected to the planet carrier 5455 for rotation. Then, the planetary carrier 5455 supports the three number one gears 5452, and the planetary carrier 5455 is rotatably connected to the stirring shaft 543. Through the adjustment component 547, the planetary carrier 5455 can be changed between synchronous rotation with the stirring shaft 543 or differential rotation. When the planetary carrier 5455 rotates synchronously with the stirring shaft 543, the planetary carrier 5455 is stationary relative to the stirring shaft 543. When the planetary carrier 5455 and the stirring shaft 543 rotate differentially and rotate in the same direction as the stirring shaft 543, the transmission ratio of the number one gear 5452 and the number two gear 5453 is reduced, thereby reducing the number one gear 5452 and fixing the planetary carrier 5455 on the stirring shaft 543.

[0049] like Figure 5-Figure 8 As shown, the adjustment component 547 includes a third gear 5471, a rack 5472, a limit block 5473, a first connecting rod 5474, a slider 5475, a return spring 5476 and a second connecting rod 5477. The third gear 5471 is fixedly connected to the stirring paddle 544, the rack 5472 is meshed with the third gear 5471, the stirring shaft 543 is provided with a sliding groove 5432, the rack 5472 is slidingly connected to the sliding groove 5432, the limit block 5473 is fixedly connected to the stirring paddle 544, the first connecting rod 5474 is fixedly connected to the planetary carrier 5455, the slider 5475 is rotatably connected to the first connecting rod 5474, the return spring 5476 is fixedly connected to the limit block 5473, and the second connecting rod 5477 is fixedly connected to the rack 5472.

[0050] The third gear 5471 is fixedly connected to the stirring paddle 544. When the concrete is just being mixed, the mixing resistance is relatively large, so the stirring paddle 544 rotates, and the third gear 5471 rotates with the stirring paddle 544. The rack 5472 is meshed with the third gear 5471, and the third gear 5471 drives the rack 5472 to slide in the sliding groove 5432. At the same time, the rotation angle of the stirring paddle 544 is limited by the limit block 5473 to prevent the material from directly flowing through the stirring paddle 544 due to excessive gravity force instead of being pushed by the stirring paddle 544 spirally, resulting in a decrease in mixing efficiency. The rack 5472 drives the second connecting rod 5477 to slide upward, and the second connecting rod 5477 abuts against the slider 5475, so that the slider 547 5 rotates along the connection of the No. 1 connecting rod 5474, so that the No. 2 connecting rod 5477 slides into the No. 1 connecting rod 5474, and at the same time, the slider 5475 is reset under the action of the torsion spring set at the rotation connection of the No. 1 connecting rod 5474, so that the planetary frame 5455 is fixed, the rotation rate of the conveying assembly 546 is accelerated, and then the conveying rate is accelerated, thereby speeding up the concrete mixing rate and improving the production efficiency. When the concrete is gradually mixed evenly and the resistance is reduced, the limit block 5473 is reset under the action of the reset spring 5476, and the No. 2 connecting rod 5477 slides out of the No. 1 connecting rod 5474, so that the planetary frame 5455 rotates in the same direction as the stirring shaft 543, reducing the transmission ratio, thereby reducing the conveying rate and reducing the energy consumption of the motor.

[0051] like Figure 4 As shown, the conveying assembly 546 includes a second rotating shaft 5461 and a spiral blade 5462. The second rotating shaft 5461 and the stirring shaft 543 are rotationally connected. The second rotating shaft 5461 and the second gear 5453 are fixedly connected. The spiral blade 5462 and the second rotating shaft 5461 are fixedly connected. The stirring shaft 543 is provided with a groove 5433, and the groove 5433 is connected to the conveying channel 5431.

[0052] The No. 2 rotating shaft 5461 is driven to rotate by the No. 2 gear 5453, so that the spiral blade 5462 rotates with the No. 2 rotating shaft 5461, thereby conveying the concrete at the bottom into the conveying channel 5431, and the concrete at the bottom is output through the slot 5433 to cover the concrete on the upper part, so as to avoid the low sand ratio and insufficient slurry of the bottom concrete, and the obvious strength difference with the upper material.

[0053] like Figure 4 and Fig. 9 As shown, the second dust reduction mechanism 7 includes a fixed rod 71, a nozzle 72, a water pump 73 and a water tank 74. The fixed rod 71 and the stirring shaft 543 are rotatably connected, the fixed rod 71 and the nozzle 72 are fixedly connected, the water pump 73 and the nozzle 72 are connected by pipelines, and the water pump 73 and the water tank 74 are connected by pipelines.

[0054] The nozzle 72 is fixed inside the mixing barrel 541 by a fixing rod 71, and is connected to the water tank 74 by a water pump 73. The water pump 73 and the nozzle 72 are connected by a pipeline, so that the water pump 73 transports the water in the water tank 74 to the nozzle 72 for spraying. The nozzle 72 is annular, and the nozzle 72 is provided with an atomizing nozzle, so that the water forms a mist and sprays out to cover the upper part of the mixing barrel 541 360 degrees, so as to absorb the dust generated during the mixing, thereby achieving the effect of dust reduction.

[0055] like Figure 1 and Fig.10 As shown, the dust reduction mechanism No. 1 6 includes a negative pressure fan 61, a cylinder 62, a guide vane 63, a dust filter 64, a collecting box 65 and a mounting frame 66. The negative pressure fan 61 and the cylinder 62 are connected by a pipeline. The cylinder 62 is provided with an empty groove 621. The guide vane 63 is placed in the empty groove 621. The dust filter 64 and the negative pressure fan 61 are fixedly connected. The collecting box 65 and the empty groove 621 are fixedly connected. The mounting frame 66 and the negative pressure fan 61 are fixedly connected. The mounting frame 66 and the collecting box 65 are fixedly connected.

[0056] Negative pressure is generated by the negative pressure fan 61, so that the air containing dust in the aggregate conveying mechanism 4 is transported to the empty slot 621 of the cylinder 62 through the pipeline, and the guide blades 63 placed in the empty slot 621 make the air containing dust form a spiral airflow to flow toward the inner wall of the cylinder 62. The large particles of dust in the air are thrown to the inner wall of the cylinder 62 due to the centrifugal force, and fall into the collection box 65 along the inner wall of the cylinder 62. The gas is transported to the negative pressure fan 61 through the pipeline, and then the small particles of dust in the air are filtered out by the dust removal filter 64 fixed in front of the negative pressure fan 61, and then the gas is discharged into the air, so as to achieve the function of dust reduction.

[0057] like Figure 3 and Fig.11 As shown, the opening and closing unit 56 includes a No. 2 motor 561, a baffle 562, a No. 3 rotating shaft 563, a fixed block 564 and a transmission belt 565. One end of the transmission belt 565 is sleeved on the output end of the No. 2 motor 561, and the other end of the transmission belt 565 is sleeved on the No. 3 rotating shaft 563. The baffle 562 and the No. 3 rotating shaft 563 are fixedly connected. Two fixed blocks 564 are provided. The No. 3 rotating shaft 563 and the fixed block 564 are rotatably connected.

[0058] One end of the transmission belt 565 is sleeved on the output end of the No. 2 motor 561, and the other end of the transmission belt 565 is sleeved on the No. 3 rotating shaft 563, so that the No. 2 motor 561 can drive the transmission belt 565 to drive the No. 3 rotating shaft 563 to rotate, and the baffle 562 is fixedly connected to the No. 3 rotating shaft 563, so that the baffle 562 rotates, so that the baffle 562 opens or closes the discharge port of the mixing bin 54 and the silo 55, and is rotatably connected to the No. 3 rotating shaft 563 through two fixed blocks 564, so that the baffle 562 is supported at both ends.

[0059] Working principle: The cement powder in the powder tank 1 is transported to the mixing mechanism 5 through the screw feeder 2, and the aggregate of the aggregate batching machine 3 is transported to the mixing mechanism 5 through the aggregate conveying mechanism 4. The first dust reduction mechanism 6 is connected to the aggregate conveying mechanism 4 through a pipeline. The negative pressure fan 61 generates negative pressure, so that the air containing dust in the aggregate conveying mechanism 4 is transported to the empty slot 621 of the cylinder 62 through the pipeline. The guide blades 63 placed in the empty slot 621 make the dust-containing air form a spiral airflow and flow toward the inner wall of the cylinder 62. The large particles of dust in the air are thrown to the inner wall of the cylinder 62 due to the action of centrifugal force, and fall into the collection box 65 along the inner wall of the cylinder 62. The small particles of dust in the air are filtered out by the dust removal filter 64, and then the gas is discharged into the air. The first motor 542 drives the stirring shaft 543 to rotate, so that the stirring paddle 544 stirs the concrete, and the spiral blade 5462 is driven to rotate through the second gear 5453, so that the concrete at the bottom is transported into the conveying channel 5431, and output through the slot 5433 to cover the upper concrete. During the stirring process, the stirring paddle 544 can rotate according to the degree of concrete mixing, thereby changing the inclination angle of the stirring paddle 544, and changing the transmission ratio of the transmission component 545 by adjusting the component 547, so as to control the conveying speed of the conveying component 546, and the water in the water tank 74 is transported to the nozzle 72 through the water pump 73 for spraying, so that the water forms a mist and sprays out 360 degrees to cover the upper part of the mixing barrel 541, so as to absorb the dust generated during the stirring, so as to achieve the effect of dust reduction.

[0060] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A concrete mixing station with dust suppression function, characterized in that: The mixing station comprises a powder tank (1), a screw feeder (2), an aggregate batching machine (3), an aggregate conveying mechanism (4), a stirring mechanism (5), a first dust reduction mechanism (6) and a second dust reduction mechanism (7); the powder tank (1) and the screw feeder (2) are fixedly connected, the screw feeder (2) and the stirring mechanism (5) are fixedly connected, the aggregate batching machine (3) and the aggregate conveying mechanism (4) are fixedly connected, the aggregate conveying mechanism (4) and the stirring mechanism (5) are fixedly connected, the first dust reduction mechanism (6) and the aggregate conveying mechanism (4) are connected by a pipeline, and the second dust reduction mechanism (7) and the stirring mechanism (5) are fixedly connected.

2. A concrete mixing station with dust suppression function according to claim 1, characterized in that: The mixing mechanism (5) comprises a main building (51), a staircase (52), a discharge hopper (53), a mixing bin (54), a silo (55) and an opening and closing unit (56). The main building (51) and the staircase (52) are fixedly connected. The discharge hopper (53) and the mixing bin (54) are fixedly connected. There are two silos (55), one of which is fixedly connected to the screw feeder (2) and the other of which is fixedly connected to the aggregate conveying mechanism (4). The mixing bin (54) and the discharge hopper (53) are fixedly connected. The silo (55) and the mixing bin (54) are fixedly connected. There are three opening and closing units (56), two of which are fixedly connected to the silo (55) and one of which is fixedly connected to the mixing bin (54). The mixing bin (54) and the second dust suppression mechanism (7) are fixedly connected.

3. A concrete mixing station with dust suppression function according to claim 2, characterized in that: The stirring chamber (54) comprises a stirring barrel (541), a No. 1 motor (542), a stirring shaft (543), a stirring paddle (544), a transmission assembly (545), a conveying assembly (546) and an adjusting assembly (547); the stirring barrel (541) and the discharge hopper (53) are fixedly connected; the No. 1 motor (542) and the stirring barrel (541) are fixedly connected; the output end of the No. 1 motor (542) and the stirring shaft (543) are fixedly connected; the stirring paddle (544) is provided with a plurality of stirring paddles (544) and a stirring shaft (543) being rotatably connected, the transmission component (545) and the stirring shaft (543) being connected, the stirring shaft (543) being provided with a conveying channel (5431), the conveying component (546) being placed in the conveying channel (5431), the conveying component (546) and the transmission component (545) being fixedly connected, and the adjusting component (547) and the stirring paddle (544) being fixedly connected.

4. A concrete mixing station with dust suppression function according to claim 3, characterized in that: The transmission assembly (545) comprises a ring gear (5451), a first gear (5452), a second gear (5453), a first rotating shaft (5454) and a planet carrier (5455); the ring gear (5451) is fixedly connected to the stirring shaft (543); three first gears (5452) are provided; the three first gears (5452) are meshed with the ring gear (5451); the second gear (5453) is meshed with the three first gears (5452); the first rotating shaft (5454) is fixedly connected to the first gear (5452); the first rotating shaft (5454) is rotationally connected to the planet carrier (5455); the planet carrier (5455) is rotationally connected to the stirring shaft (543); and the second gear (5453) is fixedly connected to the conveying assembly (546).

5. A concrete mixing station with dust suppression function according to claim 4, characterized in that: The adjustment assembly (547) includes a third gear (5471), a rack (5472), a stop block (5473), a first connecting rod (5474), a slider (5475), a return spring (5476) and a second connecting rod (5477); the third gear (5471) and the stirring paddle (544) are fixedly connected; the rack (5472) and the third gear (5471) are meshed; the stirring shaft (543) is provided with a sliding groove (5432); The rack (5472) and the sliding groove (5432) are slidably connected, the limit block (5473) and the stirring paddle (544) are fixedly connected, the No. 1 connecting rod (5474) and the planetary carrier (5455) are fixedly connected, the slider (5475) and the No. 1 connecting rod (5474) are rotatably connected, the return spring (5476) and the limit block (5473) are fixedly connected, and the No. 2 connecting rod (5477) and the rack (5472) are fixedly connected.

6. A concrete mixing station with dust suppression function according to claim 5, characterized in that: The conveying assembly (546) includes a second rotating shaft (5461) and a spiral blade (5462); the second rotating shaft (5461) and the stirring shaft (543) are rotationally connected; the second rotating shaft (5461) and the second gear (5453) are fixedly connected; the spiral blade (5462) and the second rotating shaft (5461) are fixedly connected; the stirring shaft (543) is provided with a groove (5433); the groove (5433) and the conveying channel (5431) are connected.

7. A concrete mixing station with dust suppression function according to claim 6, characterized in that: The second dust suppression mechanism (7) comprises a fixed rod (71), a nozzle (72), a water pump (73) and a water tank (74); the fixed rod (71) and the stirring shaft (543) are rotatably connected, the fixed rod (71) and the nozzle (72) are fixedly connected, the water pump (73) and the nozzle (72) are connected by a pipeline, and the water pump (73) and the water tank (74) are connected by a pipeline.

8. The concrete mixing station with dust suppression function according to claim 7, characterized in that: The first dust reduction mechanism (6) comprises a negative pressure fan (61), a cylinder (62), a guide vane (63), a dust removal filter (64), a collection box (65) and a mounting frame (66); the negative pressure fan (61) and the cylinder (62) are connected by a pipeline; the cylinder (62) is provided with an empty slot (621); the guide vane (63) is placed in the empty slot (621); the dust removal filter (64) and the negative pressure fan (61) are fixedly connected; the collection box (65) and the empty slot (621) are fixedly connected; the mounting frame (66) and the negative pressure fan (61) are fixedly connected; and the mounting frame (66) and the collection box (65) are fixedly connected.

9. A concrete mixing station with dust suppression function according to claim 8, characterized in that: The opening and closing unit (56) comprises a No. 2 motor (561), a baffle (562), a No. 3 rotating shaft (563), a fixed block (564) and a transmission belt (565); one end of the transmission belt (565) is sleeved on the output end of the No. 2 motor (561); the other end of the transmission belt (565) is sleeved on the No. 3 rotating shaft (563); the baffle (562) and the No. 3 rotating shaft (563) are fixedly connected; two fixed blocks (564) are provided; and the No. 3 rotating shaft (563) and the fixed block (564) are rotatably connected.

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