Preparation method and device of high-crack-resistance concrete material

Abstract

The invention belongs to the technical field of concrete preparation, and particularly relates to a preparation method and device of a high-crack-resistance concrete material. The top end of the mixer is fixedly connected with a discharging box; the top end of the discharging box is fixedly connected with a fixing frame. An electric cylinder is fixedly connected to the bottom face of the top end of the fixing frame. According to the preparation device, the conveying, bag opening and mixing processes of bagged high-crack-resistance concrete raw materials are accurately controlled, the harm of dust generated in the machining process to the environment and human health is effectively reduced, and an electric cylinder on a fixing frame drives a blocking plate to slide to block an opening of a discharging box; in the conveying process, a servo motor on a supporting frame drives a conveying belt to be matched with a first connecting rod and air draft fan blades on a fan rod for dust falling, and the conveying efficiency is improved. And dust in the discharging box is effectively controlled through the air pipe and the air cavity.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete preparation, in particular to a method and a device for preparing a high crack-resistant concrete material. Background Art

[0002] High crack-resistant concrete material is a type of concrete that is specially designed to enhance its ability to resist cracking. High crack-resistant concrete material is usually used in buildings and engineering structures that require higher durability and reduced cracking.

[0003] A patent application with publication number CN109397527A discloses a concrete preparation device, including a mixing barrel and a mixing rod, wherein the mixing barrel includes an inlet, an outlet and a plurality of connecting ribs connecting the inlet and the outlet, wherein the inlet and the outlet are both in an annular shape, one end of the connecting rib is evenly distributed on the circumference of the inlet, and the other end of the connecting rib is evenly distributed on the circumference of the outlet; this application can peel off the solidified concrete on the inner wall of the mixing device, thereby reducing the processing obstruction when mixing concrete next time.

[0004] In the preparation process of high crack-resistant concrete materials, a variety of different types of raw materials are usually required, such as cement, fine aggregate and coarse aggregate. In order to facilitate storage and transportation, these raw materials are often packed in sealed bags. When the bagged raw materials of high crack-resistant concrete are transported and loaded, it is usually necessary to open the bags to take out the raw materials. However, a large amount of dust will be generated when the bags are opened. A large amount of dust can easily cause harm to human health and adhere to the equipment to cause damage. Although the above-mentioned concrete preparation device can process the concrete on the inner wall of the device, it is difficult to control the diffusion of dust when the bagged raw materials are transported and loaded.

[0005] To this end, the present invention provides a method and device for preparing a high crack-resistant concrete material. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a preparation device of a high crack-resistant concrete material described in the present invention comprises a mixer; a feed box is fixedly connected to the top of the mixer; a fixing frame is fixedly connected to the top of the feed box; an electric cylinder is fixedly connected to the bottom surface of the top of the fixing frame; a sealing plate is fixedly connected to the output end of the electric cylinder, and the sealing plate is composed of two vertical plates and a horizontal plate, the output end of the electric cylinder is fixedly connected to the center of the horizontal plate, and the two vertical plates slide on the inner walls of the two sides of the feed box respectively; a conveying mechanism is provided on the outer wall of the feed box, and the conveying mechanism is used to convey the raw materials for preparing the high crack-resistant concrete into the feed box.

[0008] Preferably, the conveying mechanism includes a support frame, a conveyor belt, a drive roller, a servo motor, a feeding assembly and a bag opening assembly; the support frame is fixedly connected to the outer wall of the discharge box; the conveyor belt is rotatably connected to the support frame; the two drive rollers are respectively rotatably connected to the support frame, and the two drive rollers are located at both ends of the conveyor belt; the servo motor is fixedly connected to the outer wall of the support frame, and the output end of the servo motor is fixedly connected to one end of the drive roller away from the discharge box; the feeding assembly is arranged on the discharge box, and the feeding assembly is used to feed bagged high-cracking-resistant concrete raw materials; the bag opening assembly is arranged on the feeding assembly, and the bag opening assembly is used to open the front end of the bagged raw materials.

[0009] Preferably, the feeding assembly includes a slide rail, an electric slider, a No. 1 fixed plate, a connecting frame, a clamping plate and a pressure covering frame; the two slide rails are fixedly connected to the inner wall of the unloading box, and the two slide rails are respectively located at the top ends of both sides of the support frame; the electric slider is slidably connected to the slide rails; the No. 1 fixed plate is fixedly connected between the two electric sliders; the connecting frame is fixedly connected to the bottom end of the No. 1 fixed plate; the clamping plate is fixedly connected to the bottom end of the connecting frame; the pressure covering frame is composed of a short rod and a pressure covering plate, the pressure covering plate is fixedly connected to the bottom end of the short rod, and a plurality of anti-slip protrusions are provided at the bottom end of the pressure covering plate of the pressure covering frame, and the cross-sectional shape of the pressure covering frame is a U-shaped; the hydraulic cylinder is fixedly connected to the connecting frame, and the output end of the hydraulic cylinder is fixedly connected to the top end of the short rod of the pressure covering frame.

[0010] Preferably, the bag opening assembly includes a No. 2 fixed plate and a clamp; the No. 2 fixed plate is fixedly connected between two electric slides, and the No. 2 fixed plate is located on the electric slide at one end away from the No. 1 fixed plate; the clamp is slidably connected to the bottom end of the No. 2 fixed plate through a sliding block; a sensor is fixedly connected to the inner wall and the end away, and the sensor is electrically connected to the hydraulic cylinder and the clamp at the same time.

[0011] Preferably, one end of the driving roller close to the discharge box is fixedly connected to a connecting rod No. 1; the outer wall of the discharge box is fixedly connected to an air duct, and the inner wall diameters of the two ends of the air duct are set to be large and small; the inner wall of the large diameter end of the air duct is fixedly connected to a filter plate; the middle part of the filter plate is rotatably connected to a fan rod, and the outer wall of the fan rod and the inside of the air duct are fixedly connected to exhaust fan blades, and a belt No. 1 is sleeved between the connecting rod No. 1 and the fan rod; connecting pipes are fixedly connected to both sides of the small diameter end of the air duct, and the two connecting pipes are respectively fixedly connected to the two vertical plates of the blocking plate; air cavities are opened inside the two vertical plates of the blocking plate.

[0012] Preferably, a top plate is fixedly connected to the inner wall of the discharge box and located below the two vertical plates of the blocking plate, and the top plate can be inserted into the air cavity; a blocking block is slidably connected to the inner wall of the air cavity.

[0013] Preferably, the central inner wall of the discharge box is rotatably connected to a turntable; a plurality of fan blades are fixedly connected to the outer wall of the turntable; a No. 1 bevel gear is fixedly connected to the top outer wall of the turntable; a support plate is fixedly connected to the top of the discharge box near the top of the turntable; a matching rod is rotatably connected to the inner wall of the support plate, and the matching rod passes through the fixed frame; a No. 2 bevel gear is fixedly connected to one end of the matching rod close to the No. 1 bevel gear, and the No. 1 bevel gear and the No. 2 bevel gear can mesh with each other; a No. 2 connecting rod is fixedly connected to one end of the transmission roller away from the No. 1 connecting rod, and a No. 2 belt is sleeved between the matching rod and the No. 2 connecting rod.

[0014] Preferably, a water cavity is provided inside the matching rod; a diversion cavity is provided inside the turntable, and the water cavity can be connected to the diversion cavity through the support plate and the matching rod; and a plurality of nozzles are fixedly connected to the bottom end of the turntable in the diversion cavity.

[0015] A method for preparing a high crack-resistant concrete material, the method adopts the high crack-resistant concrete material preparation device described above for processing, and the method has the following steps:

[0016] S1: First, prepare raw materials of borax, triethanolamine, polycarboxylic acid, sodium gluconate and water, and then prepare anti-cracking admixture according to the weight ratio of 9-10 parts of borax, 5-6 parts of triethanolamine, 9-10 parts of polycarboxylic acid, 18-20 parts of sodium gluconate and 950-960 parts of water, weigh high-performance polycarboxylic acid water reducer, borax and sodium gluconate, pour them into the triethanolamine solution, stir evenly in a beaker to obtain an anti-cracking admixture solution;

[0017] S2: Then, the anti-cracking admixture solution and the triaminosilane-modified polyvinyl alcohol fiber are fully dispersed, and the triaminosilane-modified polyvinyl alcohol fiber and the anti-cracking admixture solution are fully oscillated for 3-4 hours using an ultrasonic oscillator, with a pulse frequency of 20000-21000 Hz and an ultrasonic power of 200-205 W, and ice cubes are added regularly in the water bath;

[0018] S3: Subsequently, in the process of dispersing the anti-cracking admixture solution, raw materials for the premix are prepared, and bagged cement, slag, fine aggregate, coarse aggregate, fiber and concrete are respectively and sequentially sent to the conveyor belt for transportation. After the bagged raw materials are sent into the inside of the discharge box, the clamping claws remove the packaging line, and the sealing plate seals the opening of the discharge box. The bagged raw materials are poured into the inside of the discharge box, and the exhaust fan blades send air to the air cavity to blow air into the discharge box. Multiple fan blades blow air downward as the turntable rotates, and multiple nozzles spray water to reduce dust while adding water into the mixer. The raw materials of the premix are stirred to obtain the premix;

[0019] S4: Finally, when the anti-cracking admixture solution is observed to be uniformly dispersed by naked eyes, the modified anti-cracking admixture solution is added into the mixer and stirred with the premixed material. After stirring evenly, a large volume of high crack-resistant concrete slurry is prepared.

[0020] Preferably, when the multiple nozzles in S3 spray water to reduce dust, the output end of the electric cylinder can drive the sealing plate to continue to slide down after closing the opening of the discharge box, and the top plate is inserted into the air cavity to lift the sealing block, and the sealing block can seal the bottom opening of the air cavity.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. A method and device for preparing a high-cracking-resistant concrete material described in the present invention, the preparation device effectively reduces the harm of dust generated during the processing to the environment and human health by accurately controlling the conveying, bagging and mixing processes of bagged high-cracking-resistant concrete raw materials, and drives the sealing plate on the fixed frame to slide and seal the opening of the discharge box to ensure that the dust after the bagged raw materials are opened is diffused in a sealed environment, and then the electric slider drives the feeding assembly to feed the bagged raw materials into the discharge box to achieve sequential conveying and bagging. During the conveying process, the servo motor on the support frame drives the conveyor belt, which cooperates with the No. 1 connecting rod and the exhaust fan blades on the fan rod to reduce dust, and effectively controls the dust inside the discharge box through the air duct and the air cavity.

[0023] 2. The method and device for preparing a highly crack-resistant concrete material described in the present invention, by opening multiple fan blades on a turntable to blow air, and coordinating with an internal water chamber and a nozzle to rotate and spray to reduce dust, further reduce dust diffusion, and the entire process has a high degree of automation, which not only improves construction efficiency, but also effectively ensures the cleanliness of the construction environment and reduces the impact on workers' health. At the same time, the added anti-cracking admixture and dispersant effectively improve the performance of concrete, enhance its crack resistance and durability, and further improve the preparation quality of large-volume highly crack-resistant concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 is a stereogram of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the telescopic frame in the present invention;

[0027] Figure 3 It is a structural schematic diagram of the blocking plate in the present invention;

[0028] Figure 4 It is a structural schematic diagram of the turntable in the present invention;

[0029] Figure 5 It is a partial structural sectional view of the material box in the present invention;

[0030] Figure 6 It is a flow chart of the method for preparing the high crack resistance concrete material of the present invention.

[0031] In the figure: 1. mixer; 11. unloading box; 12. fixed frame; 13. electric cylinder; 14. blocking plate; 2. support frame; 21. conveyor belt; 22. transmission roller; 23. servo motor; 3. slide rail; 31. electric slide block; 32. No. 1 fixed plate; 33. connecting frame; 34. clamping plate; 35. pressing frame; 4. No. 2 fixed plate; 41. clamping claw; 5. No. 1 connecting rod; 51. air duct; 52. filter plate; 53. fan rod; 54. connecting pipe; 55. air cavity; 6. top plate; 61. blocking block; 7. turntable; 71. fan blade; 72. No. 1 bevel gear; 73. support plate; 74. matching rod; 75. No. 2 bevel gear; 76. No. 2 connecting rod; 8. water cavity; 81. diversion cavity; 82. nozzle. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figure 1 , Figures 3 to 5 As shown, a preparation device of a high crack-resistant concrete material described in an embodiment of the present invention comprises a mixer 1; a feed box 11 is fixedly connected to the top of the mixer 1; a fixing frame 12 is fixedly connected to the top of the feed box 11; an electric cylinder 13 is fixedly connected to the bottom surface of the top of the fixing frame 12; a blocking plate 14 is fixedly connected to the output end of the electric cylinder 13, and the blocking plate 14 is composed of two vertical plates and a horizontal plate, the output end of the electric cylinder 13 is fixedly connected to the center of the horizontal plate, and the two vertical plates slide on the inner walls of both sides of the feed box 11 respectively; a conveying mechanism is provided on the outer wall of the feed box 11, and the conveying mechanism is used to convey the raw materials for the preparation of high crack-resistant concrete into the feed box 11; when preparing high crack-resistant concrete, a plurality of bagged raw materials with good proportions are sequentially delivered into the interior of the feed box 11 from the opening thereof by the conveying mechanism, and the electric cylinder on the fixing frame 12 The output end 13 drives the horizontal plate of the blocking plate 14 to slide down, and synchronously drives the vertical plates at both ends of the blocking plate 14 to insert into the interior of the discharge box 11, so that the originally opened opening of the discharge box 11 is blocked. After the bagged raw materials are fed into the discharge box 11, the rope head is removed by the accessories of the conveying mechanism, and the front end of the bagged raw materials is opened. The bagged raw materials fall from the opening at one end of the bag, and the raw materials are poured from the discharge box 11 into the mixer 1 for mixing. A large amount of dust fills the interior of the discharge box 11. After waiting for a while, the dust filled in the discharge box 11 falls and dissipates, and the electric cylinder 13 drives the blocking plate 14 to reset, removes the opened bag and replaces it with a new bagged raw material, and continues to feed the remaining bagged raw materials for continuous feeding. The dust diffusion generated by opening the bagged raw materials is controlled by sealing the interior of the discharge box 11, thereby reducing the harm of a large amount of dust to the environment, human health and equipment.

[0034] like Figure 1 , Figure 3 and Figure 4 As shown, the conveying mechanism includes a support frame 2, a conveyor belt 21, a transmission roller 22, a servo motor 23, a feeding assembly and a bag opening assembly; the support frame 2 is fixedly connected to the outer wall of the discharge box 11; the conveyor belt 21 is rotatably connected to the support frame 2; the two transmission rollers 22 are respectively rotatably connected to the support frame 2, and the two transmission rollers 22 are located at both ends of the conveyor belt 21; the servo motor 23 is fixedly connected to the outer wall of the support frame 2, and the output end of the servo motor 23 is fixedly connected to one end of the transmission roller 22 away from the discharge box 11; the feeding assembly is arranged on the discharge box 11, and the feeding assembly is used to feed the bagged high crack resistance concrete raw materials; the bag opening assembly is arranged on the feeding assembly On the assembly, the bag opening assembly is used to open the front end of the bagged raw materials; when the bagged raw materials of high crack resistance concrete are transported and opened, the support frame 2 serves as the support frame of the conveyor belt 21, and the bagged raw materials are placed on the conveyor belt 21. The feeding assembly fixes the end of the bagged raw materials, and the output end of the servo motor 23 drives a transmission roller 22 to rotate, and the transmission roller 22 drives the transmission roller 22 at the other end of the conveyor belt 21 to rotate synchronously, so as to realize the transportation of the bagged raw materials on the conveyor belt 21. After the bagged raw materials are sent into the discharge box 11, the bag opening assembly opens the bagged raw materials and discharges them, and sends a variety of bagged raw materials into the discharge box 11 in turn for bagging and mixing, which plays a role in conveying and loading the bagged raw materials.

[0035] like Figure 1 , Figure 2 and Figure 5As shown in the figure, the feeding assembly includes a slide rail 3, an electric slider 31, a first fixing plate 32, a connecting frame 33, a clamping plate 34 and a pressing frame 35; the two slide rails 3 are fixedly connected to the inner wall of the blanking box 11, and the two slide rails 3 are respectively located at the tops on both sides of the support frame 2; the electric slider 31 is slidably connected to the slide rail 3; the first fixing plate 32 is fixedly connected between the two electric sliders 31; the connecting frame 33 is fixedly connected to the bottom end of the first fixing plate 32; the clamping plate 34 is fixedly connected to the bottom end of the connecting frame 33; the pressing frame 35 is composed of a short rod and a pressing plate, the pressing plate is fixedly connected to the bottom end of the short rod, and a plurality of anti-slip bumps are arranged at the bottom end of the pressing plate of the pressing frame 35, and the cross-sectional shape of the pressing frame 35 is in a U shape; the hydraulic cylinder is fixedly connected to the connecting frame 33, and the output end of the hydraulic cylinder is fixedly connected to the top end of the short rod of the pressing frame 35; when fixedly conveying one end of the bagged raw material of the high crack-resistant concrete, first place the bagged raw material on the conveyor belt 21, insert the end of the bagged raw material into the opening of the U-shaped clamping plate 34, the hydraulic cylinder drives the short rod of the pressing frame 35 to extend downward, and the short rod drives the pressing plate to press the end of the bagged raw material on the clamping plate 34, and cooperate with a plurality of anti-slip bumps to clamp and fix the end of the bagged raw material. It should be noted that the end of the bagged raw material needs to be pressed in advance to vacate the clamping position to prevent the raw material in the bag from being clamped and difficult to separate. As the two electric sliders 31 drive the first fixing plate 32 to slide, cooperate with the conveyor belt 21 to convey the bagged raw material. When the bagged raw material is conveyed to the end of the conveyor belt 21, the bagged raw material enters the inside of the blanking box 11, the end of the bagged raw material is pulled by the connecting frame 33 fixed to the bottom end of the first fixing plate 32, the front end of the bagged raw material opens, and the front end of the bagged raw material falls below the blanking box 11, and the raw material falls from the bag into the mixer 1 for mixing. After the raw material falls, wait for the dust to dissipate, the electric slider 31 resets, clamp the empty bag to the initial position for recycling and replace the material, and convey the next raw material in sequence, which plays a role in conveying and loading the bagged raw material.

[0036] As Figure 1 and Figure 2As shown, the bag opening assembly includes a No. 2 fixed plate 4 and a clamping jaw 41; the No. 2 fixed plate 4 is fixedly connected between the two electric sliders 31, and the No. 2 fixed plate 4 is located on the end of the electric slider 31 away from the No. 1 fixed plate 32; the clamping jaw 41 is slidably connected to the bottom end of the No. 2 fixed plate 4 through a sliding block; a sensor is fixedly connected to the inner wall of the 3 and the end away from 11, and the sensor is electrically connected to the hydraulic cylinder and the clamping jaw 41 at the same time; when the bagged raw materials of high crack resistance concrete are transported, the sensor detects that the electric slider 31 is located at the initial loading position, the front end of the bagged raw materials is squeezed out and placed in the opening of the clamping plate 34, and the thread end of the bagged raw materials is also hooked on the clamping jaw 41. As the electric slider slides, the conveyor belt 21 synchronously drives the bagged raw materials to be transported. After the electric slider 31 leaves the monitoring range of the sensor, the sensor sends a signal to the main controller, and the main controller sends a signal to the hydraulic cylinder and the clamping jaw 41. The sensor can be an infrared sensor, which can be The displacement of the electric slider 31 is monitored by infrared irradiation. The hydraulic cylinder and the clamping jaws 41 start working after receiving the signal. The hydraulic cylinder drives the pressure covering frame 35 to clamp the vacant position at the front end of the bagged raw material, and the clamping jaws 41 clamp the hooked end thread of the bagged raw material. The bag of the bagged raw material can be opened after the thread end of the bag is pulled. After the bagged raw material is fed into the discharge box 11, the front end of the bagged raw material first falls into the discharge box 11 due to gravity, and the clamping jaws 41 pull the thread end to open the bag, and the clamping plate 34 pulls the end of the bagged raw material, and the raw material falls into the discharge box 11 and the mixer 1, thereby realizing the function of opening and loading the bagged raw material. At the same time, after the electric slider 31 is reset, the sensor detects that the electric slider 31 sends a signal to the main controller, and the main controller controls the hydraulic cylinder and the clamping jaws 41 to reset, remove the empty material bag and replace it with a new material bag, remove the thread end from the clamping jaws and hook the thread end of the new material bag, thereby continuously conveying and loading the bagged raw material.

[0037] like Figure 1 , Figures 3 to 5As shown, one end of the driving roller 22 close to the discharge box 11 is fixedly connected to a No. 1 connecting rod 5; the outer wall of the discharge box 11 is fixedly connected to an air duct 51, and the inner wall diameters of the two ends of the air duct 51 are set to be large and small; the inner wall of the large diameter end of the air duct 51 is fixedly connected to a filter plate 52; the middle part of the filter plate 52 is rotatably connected to a fan rod 53, and the outer wall of the fan rod 53 and the inside of the air duct 51 are fixedly connected to exhaust fan blades, and a No. 1 belt is sleeved between the No. 1 connecting rod 5 and the fan rod 53; both sides of the small diameter end of the air duct 51 are fixedly connected to connecting pipes 54, and the two connecting pipes 54 are respectively fixedly connected to the two vertical plates of the blocking plate 14; the two vertical plates of the blocking plate 14 are opened inside There is an air cavity 55; when the bagged raw materials of high crack resistance concrete are sent into the discharge box 11 and the bags are opened, the raw materials fall and generate a large amount of dust. The output end of the servo motor 23 continuously drives the transmission roller 22 close to the discharge box 11 to rotate through the conveyor belt 21, and the No. 1 connecting rod 5 then drives the fan rod 53 to rotate through the No. 1 belt. The exhaust fan blades on the fan rod 53 draw the outside air into the air duct 51, and the filter plate 52 filters the impurities in the air. The air enters the two connecting pipes 54 respectively and is blown out from the air cavity 55 inside the two blocking plates 14. The dust diffused in the discharge box 11 is blown to the inside of the mixer 1 by blowing air through the inclined air outlet, so as to achieve the effect of dust reduction on the diffused dust.

[0038] The inner wall of the material box 11 and the two vertical plates below the blocking plate 14 are fixedly connected with the top plate 6, and the top plate 6 can be inserted into the air cavity 55; the inner wall of the air cavity 55 is slidably connected with the blocking block 61; when the wind blowing inside the material box 11 is controlled, the output end of the electric cylinder 13 is used to first drive the two vertical plates of the blocking plate 14 to slide down to the top of the top plate 6 to fit together. At this time, the blocking plate 14 is located at the top position of the top plate 6, so that the inside of the material box 11 is blocked, and the dust is blown down after the bagged raw materials are opened. When the air outlet of the air cavity 55 is closed, the output end of the electric cylinder 13 continues to drive the blocking plate 14 to slide down. At this time, the top plate 6 is inserted into the air cavity 55 inside the blocking plate 14, and the blocking block 61 is squeezed and slid up. The blocking block 61 blocks the air outlet, thereby realizing the function of controlling and blocking the air outlet of the air cavity 55.

[0039] The central inner wall of the discharge box 11 is rotatably connected to a turntable 7; a plurality of fan blades 71 are fixedly connected to the outer wall of the turntable 7; a number of bevel gears 72 are fixedly connected to the outer wall of the top end of the turntable 7; a support plate 73 is fixedly connected to the top of the top of the discharge box 11 near the turntable 7; a matching rod 74 is rotatably connected to the inner wall of the support plate 73, and the matching rod 74 passes through the fixed frame 12; a number of bevel gears 75 are fixedly connected to one end of the matching rod 74 near the number one bevel gear 72, and the number one bevel gear 72 and the number two bevel gear 75 can mesh with each other; a number two connecting rod 76 is fixedly connected to the end of the transmission roller 22 away from the number one connecting rod 5, and the matching rod 74 and the number two connecting rod A No. 2 belt is sleeved between 76; when the high-crack-resistant concrete bagged raw materials are opened inside the discharge box 11, a large amount of dust diffuses inside the discharge box 11, and the No. 2 connecting rod 76 rotates with the transmission roller 22. The No. 2 connecting rod 76 synchronously drives the matching rod 74 to rotate through the No. 2 belt. The matching rod 74 rotates on the support plate 73, and the matching rod 74 synchronously drives the No. 2 bevel gear 75 and the No. 1 bevel gear 72 to rotate in engagement with each other. The No. 1 bevel gear 72 drives the multiple blades 71 on the turntable 7 to rotate and blow air at the top of the inner part of the discharge box 11, so that the diffused dust is blown down into the mixer 1, thereby improving the dust control effect inside the discharge box 11.

[0040] A water cavity 8 is provided inside the matching rod 74; a diversion cavity 81 is provided inside the turntable 7, and the water cavity 8 can be connected to the diversion cavity 81 through the support plate 73 and the matching rod 74; the bottom end of the turntable 7 is located in the diversion cavity 81 and is fixedly connected with a plurality of nozzles 82; when the dust inside the discharge box 11 is controlled to diffuse, water is pumped into the water cavity 8 by an external water pump, and the water is guided to the diversion cavity 81 through the support plate 73 and the matching rod 74, and then the water is sprayed from the plurality of nozzles 82, and the diffused dust is treated by the spraying of water to improve the dust control effect, and at the same time, the water is sprayed evenly into the internal mixed materials of the mixer 1 to improve the preparation effect of the high crack-resistant concrete material, and the plurality of nozzles 82 cooperate with the rotation of the turntable 7 to realize rotary spraying, and the rotary spraying has significant advantages over direct spraying in terms of coverage, dust reduction efficiency, adaptability, water saving and energy saving.

[0041] like Figure 6 As shown, a method for preparing a high crack-resistant concrete material is provided. The method adopts the high crack-resistant concrete material preparation device described above for processing. The method has the following steps:

[0042] S1: First, prepare raw materials of borax, triethanolamine, polycarboxylic acid, sodium gluconate and water, and then prepare anti-cracking admixture according to the weight ratio of 9-10 parts of borax, 5-6 parts of triethanolamine, 9-10 parts of polycarboxylic acid, 18-20 parts of sodium gluconate and 950-960 parts of water, weigh high-performance polycarboxylic acid water reducer, borax and sodium gluconate, pour them into the triethanolamine solution, stir evenly in a beaker to obtain an anti-cracking admixture solution;

[0043] S2: Then, the anti-cracking admixture solution and the triaminosilane-modified polyvinyl alcohol fiber are fully dispersed, and the triaminosilane-modified polyvinyl alcohol fiber and the anti-cracking admixture solution are fully oscillated for 3-4 hours using an ultrasonic oscillator, with a pulse frequency of 20000-21000 Hz and an ultrasonic power of 200-205 W, and ice cubes are added regularly in the water bath;

[0044] S3: Then, in the process of dispersing the anti-cracking admixture solution, the raw materials of the premix are prepared, and the bagged cement, slag, fine aggregate, coarse aggregate, fiber and concrete are respectively and sequentially sent to the conveyor belt 21 for transportation. After the bagged raw materials are sent into the inside of the discharge box 11, the clamping claw 41 disassembles the packaging line, and the blocking plate 14 blocks the opening of the discharge box 11. The bagged raw materials are poured into the inside of the discharge box 11, and the exhaust fan blades send air to the air cavity 55 to blow air into the inside of the discharge box 11. Multiple fan blades 71 blow air downward as the turntable 7 rotates, and multiple nozzles 82 spray water to reduce dust while adding water into the mixer 1. The raw materials of the premix are stirred to obtain the premix;

[0045] S4: Finally, when the anti-cracking admixture solution is observed to be uniformly dispersed with the naked eye, the modified anti-cracking admixture solution is added into the mixer 1 and stirred with the premixed material. After stirring evenly, a large volume of high crack-resistant concrete slurry is prepared; the use of hydration temperature rise inhibitor borax, retarder sodium gluconate, water-reducing and shrinkage-reducing agent polycarboxylic acid and dispersant triethanolamine can effectively control the temperature rise and shrinkage of concrete. By compounding the three admixtures, the deficiencies when used alone can be effectively compensated. Polycarboxylic acid has excellent water-reducing and slump-retaining properties, sodium gluconate has a stable retarding effect, and when borax and sodium gluconate are compounded, the fluidity of concrete can be improved, which is beneficial to the later durability of concrete. The appropriate amount of ternary admixture can promote the hydration of tricalcium silicate in cement, thereby improving the strength of high concrete, which is beneficial to the enhancement of concrete quality, reducing the responsible construction process in the early stage, and reducing the construction cost of concrete. Reduce the later maintenance cost. The dispersant triethanolamine can improve the dispersibility and dispersion retention of the admixture. A hydrophilic film is formed on the surface of the cement particles to reduce the charge on the surface of the cement particles, thereby reducing the electrostatic attraction between the particles and the friction on the surface of the cement particles, thereby improving the use efficiency of the admixture and improving the quality uniformity of the concrete. At the same time, triethanolamine has certain early strength characteristics, which can be beneficial to the early strength and anti-seepage performance of concrete. The surface of the polyvinyl alcohol fiber with a smooth surface and poor dispersibility can generate polar groups such as hydroxyl, carboxyl and carbonyl. Triaminosilane forms an ether bond with the polyvinyl alcohol fiber, thereby improving the dispersibility and bonding of the polyvinyl alcohol fiber, thereby making full use of the high cost performance and strong amplification performance of ordinary polyvinyl alcohol fiber, while making up for the poor dispersibility of ordinary polyvinyl alcohol fiber and the difficulty in full application in construction.

[0046] When the multiple nozzles 82 in S3 spray water to reduce dust, the output end of the electric cylinder 13 can drive the sealing plate 14 to continue to slide down after closing the opening of the discharge box 11, and the top plate 6 is inserted into the air cavity 55 to lift the sealing block 61, and the sealing block 61 can seal the bottom opening of the air cavity 55.

[0047] Working process: When preparing high crack-resistant concrete, multiple bagged raw materials with good proportions are sequentially delivered from the opening of the material box 11 by the conveying mechanism. The output end of the electric cylinder 13 on the fixed frame 12 drives the horizontal plate of the blocking plate 14 to slide down, and simultaneously drives the vertical plates at both ends of the blocking plate 14 to be inserted into the material box 11, so that the originally opened opening of the material box 11 is blocked. After the bagged raw materials are delivered to the material box 11, the rope head is removed by the accessories of the conveying mechanism, and the front end of the bagged raw materials is opened. The bagged raw materials fall from the opening at one end of the bag, and the raw materials are poured from the material box 11 into the mixer 1 for mixing. A large amount of dust is diffused in the material box 11. After waiting for a while, the inside of the material box 11 is The diffuse dust falls and dissipates, the electric cylinder 13 drives the sealing plate 14 to reset, the opened bag is removed and replaced with a new bag of raw materials, and the remaining bagged raw materials are continuously fed in for continuous feeding, and the dust diffusion generated by the bagging of the bagged raw materials is controlled by sealing the inside of the unloading box 11, thereby reducing the harm of a large amount of dust to the environment, human health and equipment; when the bagged raw materials of highly crack-resistant concrete are transported and opened, the support frame 2 serves as the support frame of the conveyor belt 21, and the bagged raw materials are placed on the conveyor belt 21. The feeding assembly fixes the end of the bagged raw materials, and the output end of the servo motor 23 drives a transmission roller 22 to rotate, and the transmission roller 22 drives the transmission roller 22 at the other end of the conveyor belt 21 to rotate synchronously, so as to realize the conveying The bagged raw materials on the conveyor belt 21 are conveyed. After the bagged raw materials are fed into the discharge box 11, the bag opening component opens the bagged raw materials and discharges the materials. Multiple bagged raw materials are sequentially fed into the discharge box 11 for bagging and mixing, which plays a role in conveying and loading the bagged raw materials. When one end of the bagged raw materials for high crack resistance concrete is fixedly conveyed, the bagged raw materials are first placed on the conveyor belt 21, and the end of the bagged raw materials is inserted into the opening of the clamping plate 34 in the shape of a Chinese character, and the hydraulic cylinder drives the short rod of the pressing frame 35 to extend downward, and the short rod drives the pressing plate to press the end of the bagged raw materials on the clamping plate 34, and cooperates with a plurality of anti-slip protrusions to clamp and fix the end of the bagged raw materials. It should be noted that the end of the bagged raw materials needs to be pressed in advance to empty the clamping position. The two electric sliders 31 drive the No. 1 fixed plate 32 to slide and cooperate with the conveyor belt 21 to transport the bagged raw materials. When the bagged raw materials are transported to the end of the conveyor belt 21, the bagged raw materials enter the interior of the discharge box 11. The end of the bagged raw materials is pulled by the connecting frame 33 fixed at the bottom end of the No. 1 fixed plate 32, and the front end of the bagged raw materials is opened, and the front end of the bagged raw materials falls below the discharge box 11. The raw materials fall from the bag into the mixer 1 for mixing. After the raw materials fall, wait for the dust to dissipate, and the electric slider 31 resets, clamps the empty bag to the initial position to recycle and replace the material, and then transports the next raw material in turn, which plays the role of conveying and loading the bagged raw materials.When conveying bagged raw materials of high crack resistance concrete, the sensor detects that the electric slider 31 is at the initial loading position, and the front end of the bagged raw materials is squeezed out and placed in the opening of the clamping plate 34, and the thread ends of the bagged raw materials are also hooked on the clamping claw 41. As the electric slider slides, the conveyor belt 21 synchronously drives the bagged raw materials to be conveyed. After the electric slider 31 leaves the monitoring range of the sensor, the sensor sends a signal to the main controller, and the main controller sends a signal to the hydraulic cylinder and the clamping claw 41. The sensor can be an infrared sensor, which can monitor whether the electric slider 31 is displaced by infrared irradiation. After receiving the signal, the hydraulic cylinder and the clamping claw 41 start to work, and the hydraulic cylinder drives the pressure covering frame 35 to clamp the vacant position at the front end of the bagged raw materials, and the clamping claw 41 clamps The end thread of the bagged raw material is hooked by the residence, and the bag of the bagged raw material can be opened after the thread of the bagged raw material is pulled. After the bagged raw material is fed into the discharge box 11, the front end of the bagged raw material first falls into the discharge box 11 due to gravity, and the clamping claw 41 pulls the thread to open the bag, and the clamping plate 34 pulls the end of the bagged raw material, and the raw material falls into the discharge box 11 and the mixer 1, so as to realize the function of opening and feeding the bagged raw material. At the same time, after the electric slider 31 is reset, the sensor detects that the electric slider 31 sends a signal to the main controller, and the main controller controls the hydraulic cylinder and the clamping claw 41 to reset, remove the empty material bag and replace it with a new material bag, remove the thread from the clamping claw and hook the thread of the new material bag, so as to continuously transport and feed the bagged raw material;

[0048] When the highly crack-resistant concrete bagged raw materials are fed into the discharge box 11 and the bags are opened, the raw materials fall and generate a large amount of dust. The output end of the servo motor 23 continuously drives the transmission roller 22 near the discharge box 11 to rotate through the conveyor belt 21, and the No. 1 connecting rod 5 then drives the fan rod 53 to rotate through the No. 1 belt. The exhaust fan blades on the fan rod 53 draw the outside air into the air duct 51, and the filter plate 52 filters the impurities in the air. The air enters the two connecting pipes 54 respectively and is blown out from the wind cavity 55 inside the two blocking plates 14. The dust diffused in the discharge box 11 is blown into the mixer 1 by the inclined air outlet. The dust is blown away by the wind, thereby achieving the effect of reducing the diffuse dust; when the wind is controlled to blow inside the material box 11, the output end of the electric cylinder 13 is used to first drive the two vertical plates of the blocking plate 14 to slide down to the top of the top plate 6 to fit together. At this time, the blocking plate 14 is located at the top position of the top plate 6, so that the inside of the material box 11 is blocked, and the dust is blown down by the wind after the bagged raw materials are opened. When the air outlet of the air cavity 55 is closed, the output end of the electric cylinder 13 continues to drive the blocking plate 14 to slide down. At this time, the top plate 6 is inserted into the air cavity 55 inside the blocking plate 14, and the blocking block 61 is squeezed and slid up. The blocking block 61 blocks the air outlet, thereby achieving the effect of controlling and blocking the air outlet of the air cavity 55;

[0049] When the bagged raw materials of high crack resistance concrete are opened inside the discharge box 11, a large amount of dust diffuses inside the discharge box 11. The No. 2 connecting rod 76 rotates with the transmission roller 22, and the No. 2 connecting rod 76 synchronously drives the matching rod 74 to rotate through the No. 2 belt. The matching rod 74 rotates on the support plate 73, and the matching rod 74 synchronously drives the No. 2 bevel gear 75 and the No. 1 bevel gear 72 to mesh and rotate with each other. The No. 1 bevel gear 72 drives the multiple blades 71 on the turntable 7 to rotate and blow at the top of the inner part of the discharge box 11, so that the diffused dust is blown down into the mixer 1, thereby improving the dust control effect inside the discharge box 11 When the dust inside the discharge box 11 is controlled to diffuse, an external water pump is used to pump water into the water chamber 8, and the water is directed to the diversion chamber 81 through the support plate 73 and the matching rod 74. Then the water is sprayed from multiple nozzles 82. The diffused dust is treated by spraying water to improve the dust control effect. At the same time, the water is sprayed evenly into the internal mixed materials of the mixer 1 to improve the preparation effect of the highly crack-resistant concrete material. In addition, multiple nozzles 82 cooperate with the rotation of the turntable 7 to realize rotary spraying. Compared with direct spraying, rotary spraying has significant advantages in terms of coverage, dust reduction efficiency, adaptability, water saving and energy saving.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for preparing a high crack resistance concrete material, characterized in that: It includes a mixer (1); a blanking box (11) is fixedly connected to the top of the mixer (1); a fixing frame (12) is fixedly connected to the top of the blanking box (11); an electric cylinder (13) is fixedly connected to the bottom surface of the top of the fixing frame (12); the output end of the electric cylinder (13) is fixedly connected with a sealing plate (14), and the sealing plate (14) is composed of two vertical plates and a horizontal plate. The output end of the electric cylinder (13) is fixedly connected to the center of the horizontal plate, and the two vertical plates slide on the inner walls of both sides of the blanking box (11) respectively; a conveying mechanism is arranged on the outer wall of the blanking box (11), and the conveying mechanism is used for conveying the raw materials for preparing high crack resistance concrete into the blanking box (11).

2. The device for preparing a high crack resistance concrete material according to claim 1, characterized in that: The conveying mechanism includes a support frame (2), a conveyor belt (21), a driving roller (22), a servo motor (23), a feeding component and a bag opening component; the support frame (2) is fixedly connected to the outer wall of the blanking box (11); the conveyor belt (21) is rotatably connected to the support frame (2); the two driving rollers (22) are respectively rotatably connected to the support frame (2), and the two driving rollers (22) are located at both ends of the conveyor belt (21); the servo motor (23) is fixedly connected to the outer wall of the support frame (2), and the output end of the servo motor (23) is fixedly connected to one end of the driving roller (22) far away from the blanking box (11); the feeding component is arranged on the blanking box (11), and the feeding component is used for feeding the bagged raw materials of high crack resistance concrete; the bag opening component is arranged on the feeding component, and the bag opening component is used for opening the front end of the bagged raw materials.

3. The device for preparing a high crack resistance concrete material according to claim 2, characterized in that: The feeding component includes a slide rail (3), an electric slider (31), a first fixing plate (32), a connecting frame (33), a clamping plate (34), a pressing frame (35) and a hydraulic cylinder; the two slide rails (3) are fixedly connected to the inner wall of the blanking box (11), and the two slide rails (3) are respectively located at the tops of both sides of the support frame (2); the electric slider (31) is slidably connected to the slide rail (3); the first fixing plate (32) is fixedly connected between the two electric sliders (31); the connecting frame (33) is fixedly connected to the bottom end of the first fixing plate (32); the clamping plate (34) is fixedly connected to the bottom end of the connecting frame (33); the pressing frame (35) is composed of a short rod and a pressing plate, the pressing plate is fixedly connected to the bottom end of the short rod, a plurality of anti-slip bumps are arranged at the bottom end of the pressing plate of the pressing frame (35), and the cross-sectional shape of the pressing frame (35) is a C shape; the hydraulic cylinder is fixedly connected to the connecting frame (33), and the output end of the hydraulic cylinder is fixedly connected to the top end of the short rod of the pressing frame (35).

4. The device for preparing a high crack resistance concrete material according to claim 3, characterized in that: The bag opening component includes a second fixing plate (4) and a clamping jaw (41); the second fixing plate (4) is fixedly connected between the two electric sliders (31), and the second fixing plate (4) is located at one end of the electric slider (31) far away from the first fixing plate (32); the clamping jaw (41) is slidably connected to the bottom end of the second fixing plate (4) through a sliding block; a sensor is fixedly connected to the inner wall of 3 and at one end far away from 11, and the sensor is electrically connected to the hydraulic cylinder and the clamping jaw (41) at the same time.

5. The device for preparing a high crack resistance concrete material according to claim 2, characterized in that: One end of the driving roller (22) close to the material discharge box (11) is fixedly connected to a No. 1 connecting rod (5); an outer wall of the material discharge box (11) is fixedly connected to an air duct (51), and the inner wall diameters of the two ends of the air duct (51) are arranged to be large and small; a filter plate (52) is fixedly connected to the inner wall of the large diameter end of the air duct (51); a fan rod (53) is rotatably connected to the middle part of the filter plate (52), and an exhaust fan blade is fixedly connected to the outer wall of the fan rod (53) and located inside the air duct (51), and a No. 1 belt is sleeved between the No. 1 connecting rod (5) and the fan rod (53); connecting pipes (54) are fixedly connected to both sides of the small diameter end of the air duct (51), and the two connecting pipes (54) are respectively fixedly connected to the two vertical plates of the blocking plate (14); and air cavities (55) are provided inside the two vertical plates of the blocking plate (14).

6. The device for preparing a high crack resistance concrete material according to claim 5, characterized in that: A top plate (6) is fixedly connected to the inner wall of the unloading box (11) and located below the two vertical plates of the blocking plate (14), and the top plate (6) can be inserted into the air cavity (55); a blocking block (61) is slidably connected to the inner wall of the air cavity (55).

7. The device for preparing a high crack resistance concrete material according to claim 5, characterized in that: The central inner wall of the material discharge box (11) is rotatably connected to a turntable (7); the outer wall of the turntable (7) is fixedly connected to a plurality of fan blades (71); the top outer wall of the turntable (7) is fixedly connected to a first bevel gear (72); the top of the material discharge box (11) is fixedly connected to a support plate (73) near the top of the turntable (7); the inner wall of the support plate (73) is rotatably connected to a matching rod (74), and the matching rod (74) passes through the fixed frame (12); the end of the matching rod (74) close to the first bevel gear (72) is fixedly connected to a second bevel gear (75), and the first bevel gear (72) and the second bevel gear (75) can mesh with each other; the end of the transmission roller (22) away from the first connecting rod (5) is fixedly connected to a second connecting rod (76), and a second belt is sleeved between the matching rod (74) and the second connecting rod (76).

8. The device for preparing a high crack resistance concrete material according to claim 7, characterized in that: A water cavity (8) is provided inside the matching rod (74); a flow diversion cavity (81) is provided inside the rotating disk (7), and the water cavity (8) can be connected to the flow diversion cavity (81) through the supporting plate (73) and the matching rod (74); and a plurality of nozzles (82) are fixedly connected to the bottom end of the rotating disk (7) in the flow diversion cavity (81).

9. A method for preparing a high crack-resistant concrete material, the method using the high crack-resistant concrete material preparation device according to any one of claims 1 to 8 for processing, characterized in that: The steps of this method are as follows: S1: First, prepare raw materials of borax, triethanolamine, polycarboxylic acid, sodium gluconate and water, and then prepare anti-cracking admixture according to the weight ratio of 9-10 parts of borax, 5-6 parts of triethanolamine, 9-10 parts of polycarboxylic acid, 18-20 parts of sodium gluconate and 950-960 parts of water, weigh high-performance polycarboxylic acid water reducer, borax and sodium gluconate, pour them into the triethanolamine solution, stir evenly in a beaker to obtain an anti-cracking admixture solution; S2: Then, the anti-cracking admixture solution and the triaminosilane-modified polyvinyl alcohol fiber are fully dispersed, and the triaminosilane-modified polyvinyl alcohol fiber and the anti-cracking admixture solution are fully oscillated for 3-4 hours using an ultrasonic oscillator, with a pulse frequency of 20000-21000 Hz and an ultrasonic power of 200-205 W, and ice cubes are added regularly in the water bath; S3: Subsequently, in the process of dispersing the anti-cracking admixture solution, raw materials for the premix are prepared, and bagged cement, slag, fine aggregate, coarse aggregate, fiber and concrete are respectively and sequentially sent to the conveyor belt (21) for transportation. After the bagged raw materials are sent into the interior of the discharge box (11), the clamping claw (41) opens the packaging line, and the sealing plate (14) seals the opening of the discharge box (11). The bagged raw materials are poured into the interior of the discharge box (11), and the exhaust fan blades send air to the air cavity (55) to blow air into the interior of the discharge box (11). Multiple fan blades (71) blow air downward as the turntable (7) rotates, and multiple nozzles (82) spray water to reduce dust while adding water into the mixer (1). The raw materials of the premix are stirred to obtain the premix; S4: Finally, when the anti-cracking admixture solution is observed to be uniformly dispersed by naked eyes, the modified anti-cracking admixture solution is added into the mixer (1) and stirred with the premixed material. After stirring evenly, a large volume of high crack-resistant concrete slurry is prepared.

10. The method for preparing a high crack resistance concrete material according to claim 9, characterized in that: When the plurality of nozzles (82) in S3 spray water to reduce dust, the output end of the electric cylinder (13) can drive the blocking plate (14) to continue to slide down after closing the opening of the unloading box (11), and the top plate (6) is inserted into the air cavity (55) to lift up the blocking block (61), and the blocking block (61) can block the bottom opening of the air cavity (55).

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