CN114474392B

CN114474392B - High-precision batching conveying system for anti-cracking ready-mixed concrete production

Info

Publication number: CN114474392B
Application number: CN202210045175.9A
Authority: CN
Inventors: 陈建; 张波; 熊俊; 陈伟
Original assignee: Wuhan Zhenxin Concrete Co ltd
Current assignee: Wuhan Zhenxin Concrete Co ltd
Priority date: 2022-01-15
Filing date: 2022-01-15
Publication date: 2023-06-27
Anticipated expiration: 2042-01-15
Also published as: CN114474392A

Abstract

The application discloses anti ready-mixed concrete production is with high accuracy batching conveying system relates to the concrete production equipment field, and it includes carrier, aggregate batching conveying mechanism, powder batching conveying mechanism and admixture batching conveying mechanism, and aggregate batching conveying mechanism is including setting up aggregate conveyer belt and a plurality of aggregate bin that sets up on the carrier and lie in aggregate conveyer belt top on the carrier, still includes the stoving mechanism that sets up between aggregate conveyer belt and aggregate bin; the drying mechanism comprises a heating component for heating various aggregates and discharging steam, a vibrating screen component for vibrating and screening the various aggregates while heating, a discharging control component for controlling the discharged and dried aggregates and a feeding control component for controlling the various aggregates to enter. The method has the effect that aggregate and the additive are easy to polymerize in the mixing process, and is beneficial to improving the quality of the anti-cracking ready-mixed concrete.

Description

High-precision batching conveying system for anti-cracking ready-mixed concrete production

Technical Field

The application relates to the field of concrete production equipment, in particular to a high-precision batching conveying system for anti-cracking ready-mixed concrete production.

Background

Along with the rapid development of economy in China, the premixed concrete is widely applied to engineering construction, and the problem of cracking of the premixed concrete is more and more common, so that the premixed concrete attracts attention because the premixed concrete influences the durability and the applicability of the structure. The raw materials of the existing anti-cracking ready-mixed concrete mainly comprise mineral admixture, cement, aggregate, admixture and water.

The batching conveying system for concrete production in the prior art generally comprises an aggregate batching conveying mechanism, a powder batching conveying mechanism and an admixture batching conveying mechanism, wherein the aggregate batching conveying mechanism comprises an aggregate bin for temporarily storing various aggregates and an aggregate conveying belt for conveying the aggregates to a mixing plant, the powder batching conveying mechanism comprises a powder tank for temporarily storing mineral admixture, cement and other powder and a powder conveying belt for conveying the powder to the mixing plant, and the admixture batching conveying mechanism comprises an admixture tank and an admixture conveying belt for conveying the admixture tank to the mixing plant or the aggregate conveying belt.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: as the aggregate is usually washed with the screened sand stone, more free water is usually present on the surface of the aggregate, and the cohesiveness of the aggregate is reduced, so that the aggregate and the additive are not easy to polymerize with each other in the mixing process, and the quality of the anti-cracking ready-mixed concrete is affected.

Disclosure of Invention

In order to solve the problem that aggregate and additive are not easy to polymerize with each other in the mixing process, the application provides a high-precision batching conveying system for producing anti-cracking ready-mixed concrete.

The application provides a crack-resistant ready mixed concrete production is with high accuracy batching conveying system adopts following technical scheme:

the high-precision batching conveying system for the anti-cracking premixed concrete production comprises a bearing frame, an aggregate batching conveying mechanism, a powder batching conveying mechanism and an additive batching conveying mechanism, wherein the aggregate batching conveying mechanism comprises an aggregate conveying belt arranged on the bearing frame, a plurality of aggregate bins arranged on the bearing frame and positioned above the aggregate conveying belt, and a drying mechanism arranged between the aggregate conveying belt and the aggregate bins; the drying mechanism comprises a heating component for heating various aggregates and discharging steam, a vibrating screen component for vibrating and screening the various aggregates while heating, a discharging control component for controlling the dried aggregates to be discharged and a feeding control component for controlling the various aggregates to enter.

Through adopting above-mentioned technical scheme, when carrying out batching to the aggregate and carrying out, firstly in entering heating element through the multiple aggregate in the feed control assembly control aggregate storehouse, rethread heating element heats the aggregate for the free water on aggregate surface volatilizes, shakes simultaneously and sieves the subassembly and shakes the sieve to the aggregate, makes multiple aggregate mix, can also let the surface and the hot air of aggregate fully contact, and the aggregate falls on the aggregate conveyer belt after drying by ejection of compact control assembly control again, and then can improve the cohesiveness of aggregate, with this effect that realizes aggregate and additive in mixing process are easy mutual polymerization is of value to promote the quality of anti ready-mix concrete.

Optionally, the heating assembly comprises a drying box connected with a plurality of aggregate bins, a heating wire laid on the inner wall of the drying box and a blower fan arranged in the drying box; the lateral wall of stoving case has seted up the gas outlet, and the diapire has seted up first discharge gate.

Through adopting above-mentioned technical scheme, after the aggregate is discharged by the aggregate storehouse, the aggregate is advanced into stoving incasement portion, and the heater strip heats the inside air of stoving case, and the blast fan is evenly diffused at stoving incasement with the hot air simultaneously, and then carries out the even heating stoving to the aggregate, and the blast fan can also drive moist air by the gas outlet discharge simultaneously, further promotes the stoving effect of aggregate.

Optionally, the vibration screen assembly comprises a shelf placed on the inner wall of the drying box, a screen cylinder arranged in the drying box, a vibration spring connected between the screen cylinder and the shelf, and a vibration motor arranged on the screen cylinder; the second discharge hole is formed in the bottom wall of the screen cylinder, the blocking plate is hinged to the second discharge hole, and the screen cylinder is provided with a transmission assembly for driving the blocking plate to swing.

Through adopting above-mentioned technical scheme, after the aggregate gets into the stoving incasement, the aggregate falls on the screen drum, simultaneously vibrating motor and vibrating spring drive screen drum continuous vibration to drive the aggregate continuous vibration, both can make multiple aggregate evenly mix, be favorable to further promoting the quality of anti ready-mixed concrete that splits, also can shake out the free water on aggregate surface, and make the surface and the hot air of aggregate fully and evenly contact, be favorable to promoting the stoving effect and the drying efficiency of aggregate. After the drying is finished, the blocking plate is driven to swing through the transmission assembly, and the blocking plate is far away from the second discharging hole, so that the dried aggregate can be discharged.

Optionally, the transmission assembly comprises a cylinder installed on the screen cylinder, a transmission rod hinged on a piston rod of the cylinder and a sliding block hinged on the end part of the transmission rod; the sliding block slides on the plugging plate.

Through adopting above-mentioned technical scheme, when needs order about the shutoff board swing, earlier through the piston rod piston motion of cylinder, drive the both ends of transfer line and take place the swing and drive the slider and slide on the shutoff board, can order about the shutoff board and take place the swing.

Optionally, the discharging control component comprises a temporary storage box arranged at the bottom of the drying box, a gas moisture detector arranged at the periphery of the air outlet and a first control MCU electrically connected with the gas moisture detector; a third discharge hole is formed in the bottom of the temporary storage box, and a first discharge valve is arranged at the third discharge hole; the gas moisture detector is used for monitoring the moisture content in the gas discharged from the gas outlet, generating moisture content data and transmitting the moisture content data to the first control MCU; and the first control MCU is used for controlling the air cylinder to drive the plugging plate to be far away from the second discharge hole according to whether the moisture content data exceeds a threshold value or not, and if the moisture content data exceeds the threshold value.

Through adopting above-mentioned technical scheme, at the in-process of heating and drying to the aggregate, gas moisture detector continuously detects the interior moisture content of gas outlet exhaust gas, until the interior moisture content of exhaust gas lower time, first control MCU can control the cylinder in time and drive the shutoff board and keep away from the second discharge gate to in time with the aggregate after the stoving emission to the temporary storage incasement, be of value to carrying out the drying efficiency of aggregate fast, and can promote the continuity and the degree of automation of system. The dried aggregate is temporarily stored in the temporary storage box, and continuously falls on the aggregate conveyer belt by the temporary storage box, so that continuous conveying of the aggregate can be maintained.

Optionally, the feeding control assembly comprises a feeding valve arranged in the aggregate bin, a pressure sensor arranged between the shelf and the drying box, and a second control MCU electrically connected with the pressure sensor; the pressure sensor is used for monitoring the pressure of the shelf on the inner wall of the drying box, generating pressure data and transmitting the pressure data to the first control MCU and the second control MCU; the first control MCU is used for stopping controlling the air cylinder according to whether the pressure data exceeds a range or not, if the pressure data is lower than the minimum value of the range, the control of the air cylinder is recovered if the pressure data is higher than the minimum value of the range; and the second control MCU is used for controlling the air cylinder to drive the plugging plate to be close to the second discharge port according to whether the pressure data exceeds the range or not, controlling the feed valve to be opened if the pressure data exceeds the minimum value of the range, and controlling the feed valve to be closed if the pressure data exceeds the maximum value of the range.

Through adopting above-mentioned technical scheme, when heating and drying the aggregate, pressure sensor can last to detect the aggregate weight in the screen cylinder, if the aggregate evacuation in the screen cylinder, first control MCU stops the control to the cylinder, the rethread second control MCU control cylinder orders about the shutoff board and is close to the second discharge gate, and control feed valve opens, make multiple aggregate pack in the screen cylinder, when until the aggregate is filled full in the screen cylinder, rethread second control MCU control feed valve closes, can realize the automatic effect of filling the screen cylinder fast of aggregate, be of value to further promote the continuity and the efficiency of aggregate batching, simultaneously can control the quality of entering the interior aggregate of screen cylinder accurately.

Optionally, the stoving case in first discharge gate department articulates there is the water blocking board, and is provided with and is used for driving the piece that resets that the water blocking board resets.

Through adopting above-mentioned technical scheme, after the aggregate is accomplished and is dried, the aggregate falls on the water blocking plate earlier to order about the water blocking plate to take place the swing, and then the aggregate can pass first discharge gate entering temporary storage case, until the aggregate is discharged completely after, the piece that resets order about the water blocking plate and resets, and then can restrict free water at the stoving in-process of new round and directly get into temporary storage case, is of value to promoting stoving effect.

Optionally, the additive batching and conveying mechanism comprises an additive tank arranged on the bearing frame and a guiding component for guiding the additive to diffuse into the aggregate; the additive tank is erected above the aggregate conveyer belt, and the outlet is connected with a second discharge valve.

Through adopting above-mentioned technical scheme, in the continuous in-process of carrying the aggregate of aggregate conveyer belt, the additive jar continuously discharges the additive to fall on the conveying track of aggregate through guide assembly, can make the additive evenly shop in the aggregate, be favorable to further promoting the polymerization effect of aggregate and additive.

Optionally, the aggregate-bearing conveyer belt sequentially comprises a first horizontal part, an inclined part and a second horizontal part along the conveying direction, wherein one end of the inclined part, which is close to the aggregate bin, is lower than one end of the inclined part, which is far away from the aggregate bin, and one end of the inclined part, which is lower, is connected with the first horizontal part, and one end of the inclined part, which is lower, is positioned above the second horizontal part; the guide assembly comprises a main guide pipe connected to the second discharge valve and a plurality of auxiliary guide pipes connected to the end parts of the main guide pipes, and the outlet ends of the auxiliary guide pipes face to aggregate leaving the inclined parts.

Through adopting above-mentioned technical scheme, when the aggregate was carried to the tilting portion, the aggregate was the parabolic departure along the tilting portion, and the admixture that is discharged by a plurality of vice guide tubes simultaneously contacted with unsettled aggregate for aggregate and admixture fully contact, and avoid the admixture to contact with the aggregate on surface as far as only, aggregate and admixture after mixing continue to be carried by the second horizontal part.

Optionally, a flow control assembly is arranged between the temporary storage box and the additive tank, and the flow control assembly comprises a first solid flowmeter connected to the first discharge valve, a second solid flowmeter arranged on the main guide pipe, a data processing MCU electrically connected with the first solid flowmeter and the second solid flowmeter, and a third control MCU electrically connected with the data processing MCU; the first solid flowmeter is used for monitoring the aggregate flow rate of the aggregate falling on the aggregate conveying belt from the temporary storage box, generating aggregate flow rate data and transmitting the aggregate flow rate data to the data processing MCU; the second solid flowmeter is used for monitoring the flow of the additive discharged by the main guide pipe, generating additive flow data and transmitting the additive flow data to the data processing MCU; the data processing MCU is used for calculating the ratio between the aggregate flow and the additive flow according to the aggregate flow data and the additive flow data, generating ratio data and transmitting the ratio data to the third control MCU; and the third control MCU is used for judging whether the ratio exceeds the range according to the ratio data, controlling the first discharge valve to reduce the opening degree if the ratio is higher than the maximum value of the range, controlling the second discharge valve to increase the opening degree, and controlling the first discharge valve to increase the opening degree and controlling the second discharge valve to reduce the opening degree if the ratio is lower than the minimum value of the range.

Through adopting above-mentioned technical scheme, first solid flowmeter and second solid flowmeter monitor aggregate respectively and get into the flow of aggregate conveyer belt and the flow that the additive got into the aggregate conveyer belt continuously, if the ratio between aggregate flow and the additive flow surpassed normal range, third control MCU in time regulates and control the aperture of first bleeder valve and second bleeder valve for the ratio between aggregate flow and the additive flow in time returns normal range, is favorable to controlling the addition of various raw materials accurately, and makes the additive fall on the aggregate evenly.

In summary, the present application includes at least one of the following beneficial technical effects:

1. after the aggregate bin discharges various aggregates, the aggregates firstly fall into the drying box and fall onto the screen drum, the heating wire and the blower fan uniformly heat the air in the drying box, meanwhile, the vibrating motor and the vibrating spring drive the screen drum to continuously vibrate, so that the various aggregates are mixed, the surfaces of the aggregates are fully contacted with hot air, and finally, the dried aggregates are discharged onto the aggregate conveying belt through the screen drum and the temporary storage box, so that the cohesiveness of the aggregates can be improved, the effect that the aggregates and the additives are easily polymerized with each other in the mixing process is realized, and the quality of the anti-cracking ready-mixed concrete is improved;

2. when the moisture content in the gas discharged by the drying box is low, the first control MCU controls the cylinder to drive the blocking plate to be far away from the second discharge hole, so that aggregate is discharged from the screen drum to the temporary storage box, until the aggregate in the screen drum is emptied, the second control MCU controls the cylinder to drive the blocking plate to be close to the second discharge hole, the feeding valve is opened, the screen drum is filled with the aggregate, the feeding valve is closed by the second control MCU, and the aggregate can be continuously discharged onto the aggregate conveyer belt, and meanwhile, automatic feeding of the screen drum can be realized, and feeding and discharging of the screen drum do not need to be manually performed;

3. when the aggregate is conveyed to the inclined part, the aggregate flies out in a parabolic manner along the inclined part, and meanwhile, the additive discharged by the plurality of auxiliary guide pipes is contacted with the suspended aggregate, so that the aggregate is fully contacted with the additive, the additive is prevented from being contacted with the surface aggregate as much as possible, and the mixed aggregate and the additive are continuously conveyed by the aggregate conveying belt.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a schematic view of the structure of the additive ingredient delivery mechanism according to the embodiment of the present application.

Fig. 3 is a schematic structural view of the aggregate bin, the drying mechanism and the transmission assembly according to the embodiment of the present application.

Fig. 4 is a schematic cross-sectional view of the aggregate bin, drying mechanism and drive assembly of an embodiment of the present application.

FIG. 5 is a schematic view of the structure of the water deflector and torsion spring of the present embodiment.

Fig. 6 is a schematic view of the structure of a vibrating screen assembly and a drive assembly according to an embodiment of the present application.

FIG. 7 is a block flow diagram of a outfeed control assembly according to an embodiment of the present application.

FIG. 8 is a flow block diagram of a feed control assembly according to an embodiment of the present application.

FIG. 9 is a flow block diagram of a flow control assembly according to an embodiment of the present application.

Reference numerals:

1. a carrier;

2. an aggregate batching and conveying mechanism; 21. an aggregate conveyor belt; 211. a first horizontal portion; 212. an inclined portion; 213. a second horizontal portion; 2131. a first inclined screw conveyor; 22. aggregate bin;

3. a powder batching and conveying mechanism; 31. a powder bin; 32. a second inclined screw conveyor;

4. an admixture batching and conveying mechanism; 41. an additive tank; 411. a second discharge valve; 42. a guide assembly; 421. a main guide tube; 422. a secondary guide tube;

5. a drying mechanism; 51. a heating assembly; 511. a drying box; 5111. an air outlet; 5112. a first discharge port; 5113. a water blocking plate; 51131. a first rotating lever; 5114. a torsion spring; 5115. a support ring; 512. a heating wire; 513. a blower fan; 52. a vibrating screen assembly; 521. a shelf; 522. a screen drum; 5221. a second discharge port; 5222. a plugging plate; 523. a vibration spring; 524. a vibration motor; 53. a discharge control assembly; 531. a temporary storage box; 5311. a third discharge port; 5312. a first discharge valve; 532. a gas moisture detector; 533. a first control MCU; 54. a feed control assembly; 541. a feed valve; 542. a pressure sensor; 543. a second control MCU;

6. a transmission assembly; 61. a cylinder; 62. a transmission rod; 63. a slide block;

7. a flow control assembly; 71. a first solid flow meter; 72. a second solid flow meter; 73. a data processing MCU; 74. a third control MCU;

8. stirring building.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-9.

The embodiment of the application discloses a high-precision batching conveying system for anti-cracking ready-mixed concrete production. Referring to fig. 1, the high-precision batching and conveying system for producing the anti-cracking ready-mixed concrete comprises a bearing frame 1, an aggregate batching and conveying mechanism 2, a powder batching and conveying mechanism 3, an additive batching and conveying mechanism 4 and a drying mechanism 5, wherein the drying mechanism 5 is arranged between an aggregate conveying belt 21 and an aggregate bin 22.

Referring to fig. 1, the aggregate ingredient conveying mechanism 2 includes an aggregate conveying belt 21 disposed on the carrier 1 and a plurality of aggregate bins 22 disposed on the carrier 1 and located above the aggregate conveying belt 21, the aggregate bins 22 being provided in three in the embodiment of the present application. The aggregate conveyer belt 21 includes first horizontal part 211, tilting part 212 and second horizontal part 213 in proper order along the direction of delivery, the one end of first horizontal part 211 is located the below of aggregate storehouse 22, tilting part 212 is close to the one end of aggregate storehouse 22 and is less than tilting part 212 and keep away from the one end of aggregate storehouse 22, and tilting part 212 lower one end tip is connected with first horizontal part 211, tilting part 212 lower one end tip is located second horizontal part 213 top, the end that aggregate storehouse 22 was kept away from to second horizontal part 213 is connected with stirring building 8 through first inclined screw conveyer 2131.

In the concrete production process, various aggregates are put on the first horizontal part 211 by different aggregate bins 22 and then sequentially conveyed to the mixing plant 8 through the first horizontal part 211, the inclined part 212, the second horizontal part 213 and the first inclined screw conveyor 2131.

Referring to fig. 1, the powder ingredient conveying mechanism 3 includes a powder bin 31 disposed at one side of the stirring mill 8 and a second inclined screw conveyor 32 connected between the powder bin 31 and the stirring mill 8, the powder bin 31 and the aggregate bin 22 being disposed at opposite sides of the stirring mill 8, respectively. In the concrete production process, the powder is put on the second inclined screw conveyor 32 from the powder bin 31 and is conveyed to the mixing plant 8 through the second inclined screw conveyor 32.

Referring to fig. 1 and 2, the admixture-dispensing and transporting mechanism 4 includes an admixture pot 41 provided on the carrier 1 and a guide assembly 42 for guiding the dispersion of the admixture within the aggregate. The additive tank 41 is erected above the aggregate conveyer belt 21, and a second discharge valve 411 is connected to the outlet, that is, the additive tank 41 is located above the junction of the inclined portion 212 and the second horizontal portion 213. The guide assembly 42 includes a main guide pipe 421 connected to the second discharge valve 411 by a flange, and a plurality of sub guide pipes 422 connected to ends of the main guide pipe 421, the plurality of sub guide pipes 422 being spaced apart in a width direction of the inclined portion 212, an outlet end of the sub guide pipe 422 facing the aggregate leaving the inclined portion 212. The carrier 1 is provided with wind shields on both sides of the auxiliary guide pipe 422, so that the falling of aggregates and additives out of the aggregate conveyor belt 21 can be reduced.

In the process that the aggregate conveyor belt 21 continuously conveys the aggregates, the additive tank 41 continuously discharges the additives through the main guide pipe 421 and the auxiliary guide pipes 422, meanwhile, the aggregates fly out in a parabolic manner along the inclined part 212, and the additives discharged by the plurality of auxiliary guide pipes 422 are contacted with suspended aggregates, so that the aggregates are fully contacted with the additives, and the additives are prevented from being contacted with the aggregates on the surface as much as possible, and the additives are uniformly paved in the aggregates, thereby being beneficial to further improving the polymerization effect of the aggregates and the additives.

Referring to fig. 1, 3 and 4, the drying mechanism 5 includes a heating assembly 51 for heating a plurality of kinds of aggregates and discharging steam, a sieving assembly 52 for sieving the plurality of kinds of aggregates while heating, a discharge control assembly 53 for controlling discharge of the dried aggregates, and a feed control assembly 54 for controlling entry of the plurality of kinds of aggregates.

Referring to fig. 3 and 4, the heating assembly 51 includes a drying box 511 connected to three aggregate bins 22, a heating wire 512 laid on an inner wall of the drying box 511, and a blower fan 513 disposed on an inner bottom wall of the drying box 511 by screws, and an air outlet 5111 is provided on a side wall of the drying box 511, and the air outlet 5111 is provided with a plurality of air outlet holes arranged at intervals along an outline of the drying box 511.

Referring to fig. 4 and 5, a first discharge hole 5112 is formed in the bottom wall of the drying box 511, a water blocking plate 5113 is hinged to the drying box 511 at the first discharge hole 5112, a reset member for driving the water blocking plate 5113 to reset is arranged on two opposite side walls of the water blocking plate 5113, a first rotating rod 51131 which is horizontally arranged is welded to two opposite side walls of the water blocking plate 5113, the first rotating rod 51131 rotates on the inner wall of the first discharge hole 5112 around the axis of the first rotating rod 51131, the reset member is a torsion spring 5114 sleeved on the first rotating rod 51131, and one end of the torsion spring 5114 is connected to the water blocking plate 5113 while the other end is connected to the inner wall of the drying box 511.

Referring to fig. 4 and 6, the vibrating screen assembly 52 includes a shelf 521 rested on an inner wall of the drying box 511, a screen drum 522 provided in the drying box 511, a vibrating spring 523 connected between the screen drum 522 and the shelf 521, and a vibrating motor 524 mounted on an outer wall of the screen drum 522 by bolts, and a support ring 5115 for placing the shelf 521 is welded around the inner wall of the drying box 511. The vibration springs 523 are provided in four, and the four vibration springs 523 are located at four corners of the shelf 521. The bottom wall of the screen drum 522 is obliquely arranged, the lower end part of the screen drum 522 is provided with a second discharge hole 5221, the second discharge hole 5221 is hinged with a plugging plate 5222, the hinge axis of the plugging plate 5222 is parallel to the first rotating rod 51131, and the screen drum 522 is provided with a transmission assembly 6 for driving the plugging plate 5222 to swing.

Referring to fig. 4 and 6, the driving assembly 6 includes a cylinder 61 mounted on a screen drum 522 or a drying box 511 by bolts, a driving lever 62 hinged to a piston rod of the cylinder 61, and a slider 63 hinged to an end of the driving lever 62. In the embodiment of the present application, the cylinder 61 is mounted on the inner wall of the drying box 511 by a lockbolt, and a piston rod of the cylinder 61 is arranged in a horizontal direction. The hinge axis of the cylinder 61 and the transmission rod 62, and the hinge circumference of the transmission rod 62 and the sliding block 63 are parallel to the first rotation rod 51131, and the sliding block 63 slides on the plugging plate 5222.

Referring to fig. 4 and 7, the discharging control unit 53 includes a temporary storage box 531 provided at the bottom of the drying box 511, a gas moisture detector 532 provided at the circumferential side of the gas outlet 5111, and a first control MCU533 electrically connected to the gas moisture detector 532. The temporary storage box 531 is communicated with the drying box 511 through a second discharge hole 5221, a third discharge hole 5311 is formed in the bottom of the temporary storage box 531, and a first discharge valve 5312 is arranged at the third discharge hole 5311. The first control MCU533 is electrically connected to the cylinder 61.

Referring to fig. 4, 6 and 7, the gas moisture detector 532 is configured to monitor the moisture content in the gas discharged from the gas outlet 5111 and generate moisture content data, and transmit the moisture content data to the first control MCU533. The first control MCU533 is configured to control the air cylinder 61 to drive the plugging plate 5222 away from the second outlet 5221 if the moisture content data exceeds the threshold.

Referring to fig. 4, 6 and 8, the feed control assembly 54 includes a feed valve 541 provided on an outlet end of the aggregate bin 22, a pressure sensor 542 provided between the shelf 521 and the drying box 511, and a second control MCU543 electrically connected to the pressure sensor 542, the pressure sensor 542 being electrically connected to the first control MCU533, and the second control MCU543 being electrically connected to both the cylinder 61 and the feed valve 541.

Referring to fig. 4, 6 and 8, a pressure sensor 542 monitors the pressure of the shelf 521 against the inner wall of the drying box 511 and generates pressure data, and transmits the pressure data to the first and

second control MCUs

533 and 543. The first control MCU533 determines whether the pressure exceeds the range based on the pressure data, stops the control of the cylinder 61 if the pressure is lower than the minimum value of the range, and resumes the control of the cylinder 61 if the pressure is higher than the minimum value of the range. The second control MCU543 is configured to determine whether the pressure exceeds the range according to the pressure data, and if the pressure exceeds the minimum value of the range, control the cylinder 61 to drive the plugging plate 5222 to approach the second outlet 5221, and control the feed valve 541 to open, and if the pressure exceeds the maximum value of the range, control the feed valve 541 to close.

When the aggregates are mixed and conveyed, the pressure sensor 542 can continuously detect the weight of the aggregates in the screen drum 522, if the aggregates in the screen drum 522 are emptied, the first control MCU533 stops controlling the air cylinder 61, then the air cylinder 61 is controlled by the second control MCU543 to drive the plugging plate 5222 to be close to the second discharge port 5221, and the feeding valve 541 is controlled to be opened, so that various aggregates in the aggregate bin 22 enter the drying box 511 and fall on the screen drum 522, meanwhile, the heating wire 512 heats the air in the drying box 511, the blast fan 513 uniformly diffuses the hot air in the drying box 511, and then the aggregates are uniformly heated and dried, so that free water on the surface of the aggregates volatilizes;

meanwhile, the vibration motor 524 and the vibration spring 523 drive the screen drum 522 to continuously vibrate and drive the aggregates to continuously vibrate, so that various aggregates can be uniformly mixed, the quality of the anti-cracking ready-mixed concrete can be further improved, free water on the surface of the aggregates can be vibrated and screened out, the surface of the aggregates is fully and uniformly contacted with hot air, and the drying effect and the drying efficiency of the aggregates are improved;

meanwhile, the gas moisture detector 532 continuously detects the moisture content in the gas discharged by the gas outlet 5111 until the moisture content in the discharged gas is lower, the first control MCU533 can timely control the cylinder 61 to drive the plugging plate 5222 to be far away from the second discharge port 5221 and timely discharge the dried aggregate out of the screen drum 522, the dried aggregate pushes the water blocking plate 5113 to swing and then falls into the temporary storage box 531 and continuously falls onto the first horizontal part 211 through the first discharge valve 5312, so that the cohesiveness of the aggregate can be improved, the effect that the aggregate and the additive are easy to polymerize with each other in the mixing process is achieved, and the quality of the anti-cracking ready-mixed concrete is improved.

Referring to fig. 9, in order to precisely control the addition amount of the admixture, a flow control assembly 7 is provided between the temporary storage box 531 and the admixture tank 41, the flow control assembly 7 includes a first solid flow meter 71 which is connected to the first discharge valve 5312 by a flange, a second solid flow meter 72 which is provided to the main guide pipe 421 by a flange, a data processing MCU73 which is electrically connected to both the first solid flow meter 71 and the second solid flow meter 72, and a third control MCU74 which is electrically connected to the data processing MCU73, and the third control MCU74 is electrically connected to both the first discharge valve 5312 and the second discharge valve 411.

Referring to fig. 9, a first solid flow meter 71 monitors the flow rate of aggregate falling on the aggregate conveyer belt 21 from the temporary storage box 531 and generates aggregate flow rate data, and transmits the aggregate flow rate data to the data processing MCU73. A second solid flow meter 72 for monitoring the flow rate of the admixture discharged from the main guide pipe 421 and generating admixture flow rate data, and transmitting the admixture flow rate data to the data processing MCU73. The data processing MCU73 is configured to calculate a ratio between the aggregate flow rate and the additive flow rate according to the aggregate flow rate data and the additive flow rate data, generate ratio data, and transmit the ratio data to the third control MCU74. The third control MCU74 is configured to determine whether the ratio exceeds the range according to the ratio data, and if the ratio exceeds the maximum value of the range, control the first discharge valve 5312 to decrease the opening, and control the second discharge valve 411 to increase the opening, and if the ratio falls below the minimum value of the range, control the first discharge valve 5312 to increase the opening, and control the second discharge valve 411 to decrease the opening.

In the concrete production process, the first solid flow meter 71 and the second solid flow meter 72 continuously monitor the flow of the aggregate entering the aggregate conveyer belt 21 and the flow of the additive entering the aggregate conveyer belt 21 respectively, if the ratio between the aggregate flow and the additive flow exceeds the normal range, the third control MCU74 timely regulates and controls the opening of the first discharge valve 5312 and the second discharge valve 411, so that the ratio between the aggregate flow and the additive flow timely returns to the normal range, the accurate control of the addition of various raw materials is facilitated, and the additive is uniformly dropped on the aggregate.

The implementation principle of the high-precision batching conveying system for the production of the anti-cracking ready-mixed concrete is as follows: when the aggregates are mixed and conveyed, the pressure sensor 542 can continuously detect the weight of the aggregates in the screen drum 522, if the aggregates in the screen drum 522 are emptied, the first control MCU533 stops controlling the air cylinder 61, then the air cylinder 61 is controlled by the second control MCU543 to drive the plugging plate 5222 to be close to the second discharge port 5221, and the feeding valve 541 is controlled to be opened, so that various aggregates in the aggregate bin 22 enter the drying box 511 and fall on the screen drum 522, meanwhile, the heating wire 512 heats the air in the drying box 511, the blast fan 513 uniformly diffuses the hot air in the drying box 511, and then the aggregates are uniformly heated and dried, so that free water on the surface of the aggregates volatilizes;

meanwhile, the gas moisture detector 532 continuously detects the moisture content in the gas discharged by the gas outlet 5111 until the moisture content in the discharged gas is lower, the first control MCU533 can timely control the cylinder 61 to drive the plugging plate 5222 to be far away from the second discharge port 5221, timely discharge the dried aggregate out of the screen drum 522, the dried aggregate pushes the water blocking plate 5113 to swing and then falls into the temporary storage box 531, and finally the dried aggregate continuously falls onto the first horizontal part 211 through the first discharge valve 5312, so that the cohesiveness of the aggregate can be improved, the effect that the aggregate and the additive are easy to polymerize with each other in the mixing process can be realized, and the quality of the anti-cracking ready-mixed concrete is improved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides an anti ready-mixed concrete production of splitting is with high accuracy batching conveying system, includes carrier frame (1), aggregate batching conveying mechanism (2), powder batching conveying mechanism (3) and admixture batching conveying mechanism (4), aggregate batching conveying mechanism (2) including set up in aggregate conveyer belt (21) and a plurality of set up in on carrier frame (1) and be located aggregate feed bin (22) of aggregate conveyer belt (21) top, its characterized in that: the drying mechanism (5) is arranged between the aggregate conveying belt (21) and the aggregate bin (22);

the drying mechanism (5) comprises a heating component (51) for heating various aggregates and discharging steam, a vibrating screen component (52) for vibrating and screening the various aggregates while heating, a discharging control component (53) for controlling the dried aggregates to be discharged and a feeding control component (54) for controlling the various aggregates to enter;

the heating component (51) comprises a drying box (511) connected with a plurality of aggregate bins (22), heating wires (512) laid on the inner wall of the drying box (511) and a blast fan (513) arranged in the drying box (511); an air outlet (5111) is formed in the side wall of the drying box (511), and a first discharge hole (5112) is formed in the bottom wall of the drying box;

the vibrating screen assembly (52) comprises a shelf (521) placed on the inner wall of the drying box (511), a screen drum (522) arranged in the drying box (511), a vibrating spring (523) connected between the screen drum (522) and the shelf (521) and a vibrating motor (524) arranged on the screen drum (522); the bottom wall of the screen cylinder (522) is provided with a second discharge hole (5221), the second discharge hole (5221) is hinged with a blocking plate (5222), and the screen cylinder (522) is provided with a transmission assembly (6) for driving the blocking plate (5222) to swing.

2. The high-precision batch delivery system for producing anti-crack ready-mix concrete according to claim 1, wherein: the transmission assembly (6) comprises a cylinder (61) arranged on the screen drum (522), a transmission rod (62) hinged on a piston rod of the cylinder (61) and a sliding block (63) hinged on the end part of the transmission rod (62);

the sliding block (63) slides on the plugging plate (5222).

3. The high-precision batch delivery system for producing anti-crack ready-mix concrete according to claim 2, wherein: the discharging control assembly (53) comprises a temporary storage box (531) arranged at the bottom of the drying box (511), a gas moisture detector (532) arranged at the periphery of the air outlet (5111), and a first control MCU (533) electrically connected with the gas moisture detector (532);

a third discharge hole (5311) is formed in the bottom of the temporary storage box (531), and a first discharge valve (5312) is arranged at the third discharge hole (5311);

the gas moisture detector (532) is configured to monitor a moisture content in the gas discharged from the gas outlet (5111) and generate moisture content data, and transmit the moisture content data to the first control MCU (533);

the first control MCU (533) is used for controlling the air cylinder (61) to drive the plugging plate (5222) to be far away from the second discharge port (5221) according to whether the moisture content data exceeds a threshold value or not.

4. A high precision batch delivery system for the production of anti-crack ready mixed concrete according to claim 3, characterized in that: the feeding control assembly (54) comprises a feeding valve (541) arranged on the aggregate bin (22), a pressure sensor (542) arranged between the shelf (521) and the drying box (511), and a second control MCU (543) electrically connected with the pressure sensor (542);

the pressure sensor (542) is configured to monitor a pressure of the shelf (521) on the inner wall of the drying box (511), generate pressure data, and transmit the pressure data to the first control MCU (533) and the second control MCU (543);

the first control MCU (533) is configured to determine whether the pressure exceeds a range according to the pressure data, stop control of the cylinder (61) if the pressure is lower than a minimum value of the range, and resume control of the cylinder (61) if the pressure is higher than the minimum value of the range;

the second control MCU (543) is used for judging whether the pressure exceeds the range according to the pressure data, if the pressure exceeds the minimum value of the range, the air cylinder (61) is controlled to drive the plugging plate (5222) to be close to the second discharge port (5221), the feeding valve (541) is controlled to be opened, and if the pressure exceeds the maximum value of the range, the feeding valve (541) is controlled to be closed.

5. The high-precision batch delivery system for producing anti-crack ready-mix concrete according to claim 1, wherein: the drying box (511) is hinged with a water blocking plate (5113) at the first discharge hole (5112), and a reset piece for driving the water blocking plate (5113) to reset is arranged.

6. A high precision batch delivery system for the production of anti-crack ready mixed concrete according to claim 3, characterized in that: the additive batching and conveying mechanism (4) comprises an additive tank (41) arranged on the bearing frame (1) and a guiding component (42) for guiding the additive to diffuse into the aggregate;

the additive tank (41) is erected above the aggregate conveying belt (21), and a second discharge valve (411) is connected to the outlet.

7. The high-precision batch delivery system for producing anti-crack ready-mix concrete according to claim 6, wherein: the aggregate conveying belt (21) sequentially comprises a first horizontal part (211), an inclined part (212) and a second horizontal part (213) along the conveying direction, one end, close to the aggregate bin (22), of the inclined part (212) is lower than one end, far away from the aggregate bin (22), of the inclined part (212), one end, lower than the inclined part (212), of the inclined part is connected with the first horizontal part (211), and one end, lower than the inclined part (212), of the inclined part is located above the second horizontal part (213);

the guide assembly (42) comprises a main guide pipe (421) connected to the second discharge valve (411) and a plurality of auxiliary guide pipes (422) connected to the ends of the main guide pipe (421), wherein the outlet ends of the auxiliary guide pipes (422) face aggregate leaving the inclined part (212).

8. The high-precision batch delivery system for producing anti-crack ready-mix concrete according to claim 7, wherein: a flow control assembly (7) is arranged between the temporary storage box (531) and the additive tank (41), and the flow control assembly (7) comprises a first solid flowmeter (71) connected to the first discharge valve (5312), a second solid flowmeter (72) arranged on the main guide pipe (421), a data processing MCU (73) electrically connected with the first solid flowmeter (71) and the second solid flowmeter (72) and a third control MCU (74) electrically connected with the data processing MCU (73);

the first solid flowmeter (71) is used for monitoring aggregate flow falling on the aggregate conveyer belt (21) from the temporary storage box (531) and generating aggregate flow data, and transmitting the aggregate flow data to the data processing MCU (73);

-said second solid flow meter (72) for monitoring the flow of the additive discharged by said main guide tube (421) and generating additive flow data and transmitting said additive flow data to said data processing MCU (73);

the data processing MCU (73) is used for calculating the ratio between the aggregate flow and the additive flow according to the aggregate flow data and the additive flow data, generating ratio data and transmitting the ratio data to the third control MCU (74);

the third control MCU (74) is used for judging whether the ratio exceeds the range according to the ratio data, if the ratio exceeds the maximum value of the range, the first discharge valve (5312) is controlled to reduce the opening degree, the second discharge valve (411) is controlled to increase the opening degree, and if the ratio is lower than the minimum value of the range, the first discharge valve (5312) is controlled to increase the opening degree, and the second discharge valve (411) is controlled to reduce the opening degree.