Preparation process of waterproof impervious concrete

Abstract

The invention discloses a preparation process of waterproof and anti-seepage concrete, which is characterized in that the waterproof and anti-seepage concrete is prepared from the following raw materials in parts by weight: 300 to 350 parts of cement, 100 to 143 parts of water, 120 to 158 parts of silica fume, 500 to 600 parts of coarse aggregate, 320 to 450 parts of fine aggregate, 25 to 32 parts of fly ash and 3 to 10 parts of inorganic nano anti-cracking permeability reducing agent, the preparation process of the waterproof and anti-permeability concrete comprises the following steps: S1, preparing raw materials including cement, water, silica fume, coarse aggregate, fine aggregate, fly ash and an inorganic nano anti-cracking permeability-reducing agent; s2, firstly, mixing an inorganic nano anti-cracking permeability-reducing agent with water, and then uniformly stirring to form mixed water for later use; s3, conveying the cement, the silica fume, the fine aggregate and the fly ash into a stirring base through a gravel conveying belt, and stirring; s4, the mixed water is introduced into a stirring base to be stirred into slurry; s5, then the coarse aggregate is conveyed into a stirring base through a gravel conveying belt to be stirred; and S6, after the stirring base is unloaded, the stirring base is transported to the position of a pouring construction site through a stirring truck.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete production, and in particular relates to a preparation process of waterproof and anti-seepage concrete. Background Art

[0002] Concrete is generally composed of cement, water, coarse aggregate, fine aggregate, mineral admixtures, and admixtures. It is an artificial stone made by uniform mixing, dense molding, and curing and hardening.

[0003] At present, a Chinese patent with publication number CN115536343A and publication date December 30, 2022 discloses a slump-preserving self-compacting high-strength concrete for use in high-temperature areas and a preparation method thereof. The concrete includes the following components by mass: 320-380 parts of cement, 90-130 parts of mineral powder, 30-60 parts of microsilica powder, 850-910 parts of machine-made sand, 800-1030 parts of gravel, 125-138 parts of water, 100-120 parts of filling auxiliary cementitious materials, and 7-14 parts of HB-1 high-performance admixture. The HB-1 high-performance admixture is a liquid composite polycarboxylic acid water-reducing agent composed of a slump-preserving water-reducing component and a retarding component. The mass ratio of the slump-preserving water-reducing component to the retarding component is: 94.9-98.1:1.9-5.1.

[0004] However, in the existing technology, concrete still has the problem of water seepage in actual application. Concrete water seepage can easily cause the interior of the concrete to become moist. The moisture formed cannot be discharged, which will generate internal volatile pressure, thereby causing cracks in the concrete. At the same time, it is easy to corrode the steel bars in the concrete, which will eventually affect the stability of the concrete. Summary of the Invention

[0005] The purpose of the present invention is to provide a preparation process for waterproof and anti-seepage concrete, which can be beneficial to improving the waterproof and anti-seepage properties of concrete.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A preparation process for waterproof and anti-seepage concrete, characterized in that: A waterproof and anti-seepage concrete comprises the following raw materials in parts by weight: 300-350 parts of cement, 100-143 parts of water, 120-158 parts of silica fume, 500-600 parts of coarse aggregate, 320-450 parts of fine aggregate, 25-32 parts of fly ash, and also comprises 3-10 parts of inorganic nano anti-cracking and anti-seepage agent;

[0007] The preparation process of the waterproof and anti-seepage concrete comprises the following steps:

[0008] S1: Prepare raw materials: cement, water, silica fume, coarse aggregate, fine aggregate, fly ash, and inorganic nano-anti-cracking and permeability-reducing agent;

[0009] S2: First, the inorganic nano anti-cracking and permeability reducing agent and water are mixed and stirred evenly to form mixed water for use;

[0010] S3: Cement, silica fume, fine aggregate and fly ash are then transported to the mixing base via a sand and gravel conveyor belt for mixing;

[0011] S4: The mixed water is introduced into the stirring base and stirred into a slurry;

[0012] S5: The coarse aggregate is then transported to the mixing base via a sand and gravel conveyor belt for mixing;

[0013] S6: After unloading the mixing base, it is transported to the pouring site by a mixer truck.

[0014] By adopting the above technical solution, waterproof and anti-seepage concrete includes cement, water, silica fume, coarse aggregate, fine aggregate, fly ash and inorganic nano-anti-cracking and anti-seepage agent. After the inorganic nano-anti-cracking and anti-seepage agent is added to the concrete, it can react with Ca(OH)2 precipitated during the hydration process of the cement to generate a large amount of water-insoluble gel material. After hardening, these gel materials form a strong and dense anti-seepage layer, filling and blocking the capillary pores and water channels in the concrete, and ultimately significantly improving the waterproof and anti-seepage performance of the concrete.

[0015] At the same time, in the preparation process, the inorganic nano anti-cracking and seepage reducing agent and water are first mixed and then stirred evenly to form mixed water for standby use, which is conducive to the uniform mixing of the inorganic nano anti-cracking and seepage reducing agent in the concrete.

[0016] The present invention is further configured as follows: the cement is Portland cement.

[0017] By adopting the above technical solution and using Portland cement as cement, since Portland cement is mainly composed of Portland cement and quartz sand, after the addition of active chemical substances, these components react in the concrete to form water-insoluble crystals, thereby blocking the capillary pores, enhancing the density of the concrete, and further improving the waterproof and anti-seepage properties of the concrete.

[0018] The present invention is further configured as follows: the sand and gravel conveyor belt includes a conveyor frame extending obliquely upward toward one side of a mixing base, a driven wheel rotatably connected to the upper end of the conveyor frame, a driving wheel rotatably connected to the lower end of the conveyor frame, a conveyor belt arranged between the driven wheel and the driving wheel, a driving motor fixed at the lower end of the conveyor frame, a driving belt connected between the driving motor and the driving wheel, a plurality of support frames fixed on the conveyor frame and evenly spaced along the extension direction of the conveyor frame, and two inclined rollers rotatably connected to both sides of the support frame and used to support both sides of the conveyor belt.

[0019] By adopting the above technical solution, the driving motor is used to drive the driving wheel to rotate through the driving belt, and the driving wheel can drive the conveyor belt through the driven wheel for transmission. At the same time, the two inclined rollers in the support frame are used to support the conveyor belt, so that the conveyor belt is supported in a V shape at the support frame position. At this time, it is conducive to the stable transmission of the material by the conveyor belt and reduces the possibility of the material falling from the edge of the conveyor belt.

[0020] The present invention is further configured as follows: two first bearing seats are provided in the middle of the support frame, a roller shaft is fixed at the center of the inclined roller, and the lower end is rotatably connected to the first bearing seat, a cavity layer is provided in the inclined roller, and the lubricating oil for lubricating the inclined roller and the conveyor belt is contained therein, an oil injection hole communicating with the cavity layer is provided on the upper end side wall of the inclined roller, and the liquid level of the lubricating oil is lower than the position of the oil injection hole.

[0021] By adopting the above technical solution, after the sand and gravel conveyor belt has been used for a period of time, it is necessary to lubricate the space between the inclined roller and the conveyor belt, thereby reducing the friction between the inclined roller and the conveyor belt and helping the conveyor belt to perform smooth transmission. The lubricating oil contained in the cavity layer of the inclined roller is used, and the liquid level of the lubricating oil is lower than the position of the oil injection hole. When the inclined roller rotates, the lubricating oil can move to the position of the oil injection hole under the action of centrifugal force. After the lubricating oil overflows from the oil injection hole, it can be spread between the inclined roller and the conveyor belt, thereby achieving lubrication between the inclined roller and the conveyor belt.

[0022] The present invention is further configured as follows: a spiral groove with its upper end located at the oil injection hole is formed on the circumference of the inclined roller, and a sponge strip for absorbing lubricating oil sprayed from the oil injection hole is embedded in the spiral groove.

[0023] By adopting the above technical solution, the spiral groove is opened on the circumferential side of the inclined roller, and a sponge strip is embedded in the spiral groove. When the lubricating oil overflows from the oil injection hole, the lubricating oil can be absorbed by the sponge strip. As the sponge strip absorbs the oil, the spiral sponge strip can spread the lubricating oil to various positions of the inclined roller. Then, under the squeezing of the conveyor belt, stable and efficient lubrication can be achieved between the inclined roller and the conveyor belt.

[0024] The present invention is further configured as follows: an oil filling hole communicating with the oil injection hole is opened on the upper end surface of the inclined roller, and a sealing plug is provided on the upper end of the inclined roller, one end of which is embedded in the oil filling hole and seals the oil injection hole at the same time.

[0025] By adopting the above technical solution, one end of the sealing plug is embedded in the oil filling hole and seals the oil injection hole, thereby preventing a large amount of lubricating oil from overflowing from the oil injection hole due to excessive rotation speed of the inclined roller.

[0026] The present invention is further configured as follows: an iron column is fixed at one end of the sealing plug away from the oil filling hole, a return spring is sleeved on the sealing plug with one end connected to the iron column and the other end connected to the end face of the inclined roller, a magnet disk is fixed at the side of the support frame and at the position corresponding to the iron column, which is used to form a magnetic attraction force on the iron column so that the end of the iron column is pulled out of the oil injection hole, and the conveying frame is also provided with a shielding component for shielding the magnetic attraction force when the conveying frame is inspected and the inclined roller is lubricated.

[0027] By adopting the above technical solution, when the sand and gravel conveyor belt is normally conveying materials, the shielding component shields the magnetic attraction between the iron column and the magnet disk. At this time, under the elastic restoring force of the return spring, the end of the sealing plug can be stably embedded in the oil injection hole and stably seal the oil injection hole, thereby preventing the lubricating oil from overflowing from the oil injection hole when the inclined roller is rolling normally.

[0028] When the sand and gravel conveyor belt is inspected and the inclined roller is lubricated and maintained, the shielding component can cancel the shielding effect of the magnetic attraction between the iron column and the magnet disk. Then the iron column can be moved toward the side close to the magnet disk under the magnetic attraction of the magnet disk, thereby opening the oil spray hole, and then the sand and gravel conveyor belt is started. After the inclined roller rotates, the lubricating oil can move to the position of the oil spray hole under the action of centrifugal force. After the lubricating oil overflows from the oil spray hole, it can be absorbed by the sponge strip. As the sponge strip absorbs, the spiral sponge strip can spread the lubricating oil to various positions of the inclined roller. Then, under the squeezing of the conveyor belt, stable and efficient lubrication can be achieved between the inclined roller and the conveyor belt.

[0029] The present invention is further configured as follows: a wrapping cover for wrapping the upper side of the conveyor belt is also provided on the conveyor rack, and guide rails whose extension direction is parallel to the extension direction of the conveyor rack are fixed at positions between the two sides of the multiple support racks, and the wrapping cover includes a flexible tarpaulin, a fixed arc rod connected to the lower end of the flexible tarpaulin and fixed at both ends to the lower end of the guide rail, and multiple movable arc rods connected to the outer wall of the flexible tarpaulin and slidably connected to the guide rail at both ends.

[0030] By adopting the above technical solution, the conveying frame is wrapped around the upper side of the conveyor belt with a wrapping cover, so that the wrapping cover can prevent rain and dust, which is conducive to meeting the green and environmental protection requirements during concrete transportation; the wrapping cover includes a flexible rain cloth, a fixed arc rod and a movable arc rod. When the sand and gravel conveyor belt is inspected and the inclined roller is lubricated and maintained, the movable arc rod is moved toward the side close to the fixed arc rod, so that the wrapping cover is folded into the position at the lower end of the conveying frame, and then the sand and gravel conveyor belt can be easily inspected and the inclined roller can be lubricated and maintained.

[0031] The present invention is further configured as follows: the guide rail is located between the iron column and the magnet disk, the shielding assembly includes a guide groove opened in the guide rail, a shielding iron plate fixed to the end of the movable arc rod and embedded in the guide groove, and a gap is left between the shielding iron plate and the magnet disk, and between the shielding iron plate and the iron column.

[0032] By adopting the above technical solution, when the sand and gravel conveyor belt is normally transporting materials and the wrapping cover is normally wrapped on the conveyor belt, the shielding iron plate fixed to the end of the movable arc rod is used, and the shielding iron plate is located between the iron column and the magnet disk. At the same time, since there is a gap between the shielding iron plate and the magnet disk, and between the shielding iron plate and the iron column, the shielding iron plate can shield the magnetic attraction of the magnet disk to the iron column; and when the movable arc rod moves toward the side close to the fixed arc rod to retract the wrapping cover into the position at the lower end of the conveyor frame, the shielding iron plate can be removed from between the iron column and the magnet disk, thereby canceling the shielding effect of the shielding iron plate on the magnetic attraction between the iron column and the magnet disk.

[0033] The present invention is further configured as follows: a driving cylinder is provided at the upper end of the guide rail, a second bearing seat is fixed to the end of the piston rod of the driving cylinder, a winding shaft is rotatably connected to the second bearing seat, a winding wheel located in the guide groove is fixed on the winding shaft, a connecting rope is provided on the winding wheel with one end connected to the winding wheel and the other end connected to the movable arc rod near the upper end of the flexible tarpaulin, a driven pulley is also provided on the winding shaft, a driving pulley is provided at the end of the driven pulley, and a linkage belt is provided between the driven pulley and the driving pulley.

[0034] By adopting the above technical solution, when it is necessary to drive the wrapping cover to unfold upward and wrap it on the upper side of the conveyor belt, the piston rod of the driving cylinder is retracted, thereby driving the driven pulley and the linked belt to be tensioned through the second bearing seat and the reel-up shaft, and then the rotation of the driven pulley can drive the reel-up wheel to reel in the connecting rope, thereby pulling the wrapping cover upward and unfolding it through the connecting rope. Until the wrapping cover is unfolded, the piston rod of the driving cylinder is extended, thereby canceling the tension state of the driven pulley and the linked belt, and at the same time the reel-up wheel is pressed against the inner wall of the guide groove, thereby pressing the connecting rope wound in the reel-up wheel against the inner wall of the guide groove, and finally completing the positioning of the reel-up wheel and the wrapping cover;

[0035] At the same time, when the wrapping cover needs to be folded up, the piston rod of the driving cylinder is continued to be retracted, thereby driving the driven pulley and the linkage belt to be tensioned again through the second bearing seat and the winding shaft, and then the reverse rotation of the driven wheel can slowly drive the winding wheel to unwind the connecting rope. Under the action of the wrapping cover's own gravity, the wrapping cover can be folded at the lower end of the conveyor frame.

[0036] The beneficial effects of the present invention are as follows: when the sand and gravel conveyor belt conveys materials, the driving motor is used to drive the driving wheel to rotate through the driving belt, and the driving wheel can drive the conveyor belt through the driven wheel to convey the materials. At the same time, the two inclined rollers in the support frame are used to support the conveyor belt, so that the conveyor belt is supported in a V shape at the position of the support frame, which is conducive to the stable conveyance of the materials by the conveyor belt and reduces the possibility of the materials falling from the edge of the conveyor belt.

[0037] When the sand and gravel conveyor belt needs to transport materials normally, the piston rod of the driving cylinder is first retracted, thereby driving the driven pulley and the linked belt to be tensioned through the second bearing seat and the take-up shaft, and then the rotation of the driven pulley can drive the take-up wheel to reel in the connecting rope, thereby pulling the wrapping cover upward and unfolding it. Until the wrapping cover is unfolded, the piston rod of the driving cylinder is extended, thereby canceling the tension state of the driven pulley and the linked belt, and at the same time the take-up wheel is pressed against the inner wall of the guide groove, thereby pressing the connecting rope wound in the take-up wheel against the inner wall of the guide groove, and finally After the positioning of the winding wheel and the wrapping cover is completed, the wrapping cover can be stably wrapped on the upper side of the conveyor belt; at the same time, the shielding iron plate is just moved to the position between the iron column and the magnet disk. Since there are gaps between the shielding iron plate and the magnet disk, and between the shielding iron plate and the iron column, the shielding iron plate can shield the magnetic attraction of the magnet disk to the iron column. Therefore, under the elastic restoring force of the reset spring, the end of the sealing plug can be stably embedded in the oil injection hole and stably seal the oil injection hole, thereby preventing the lubricating oil from overflowing from the oil injection hole when the tilt roller is rolling normally.

[0038] When the sand and gravel conveyor belt has been used for a period of time and is under inspection and the inclined roller is lubricated and maintained, the piston rod of the driving cylinder is first retracted again, thereby driving the driven pulley and the linkage belt to be tensioned again through the second bearing seat and the reeling shaft, and then the reverse rotation of the driven pulley can slowly drive the reeling wheel to unwind the connecting rope. Under the action of the weight of the wrapping cover itself, the wrapping cover can be folded at the lower end of the conveyor frame. After the wrapping cover is removed from the upper side of the conveyor belt, the sand and gravel conveyor belt can be easily inspected; at the same time, the shielding iron plate is removed from between the iron column and the magnet disk, thereby canceling the shielding effect of the shielding iron plate on the magnetic attraction between the iron column and the magnet disk. , then the iron column can be attracted by the magnet disk and move toward the side close to the magnet disk (but due to the tension of the return spring, the iron column cannot cross the guide groove and engage with the magnet disk), thereby opening the oil spray hole, and then starting the sand and gravel conveyor belt. After the inclined roller rotates, under the action of centrifugal force, the lubricating oil can move to the position of the oil spray hole, and the lubricating oil overflows from the oil spray hole and can be absorbed by the sponge strip. As the sponge strip absorbs, the spiral sponge strip can spread the lubricating oil to various positions of the inclined roller, and then under the squeezing of the conveyor belt, stable and efficient lubrication can be achieved between the inclined roller and the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 It is a structural schematic diagram of the sand and gravel conveyor belt in the present invention;

[0041] Figure 2 This is a partial enlarged view of the connection relationship between the conveying frame, the supporting frame and the inclined rollers in the sand and gravel conveyor belt of the present invention;

[0042] Figure 3 This is a partial cross-sectional view of the connection between the support frame, inclined roller, magnet disk, guide rail, sealing plug, iron column and shielding iron plate in the sand and gravel conveyor belt of the present invention. At this time, the shielding iron plate is moved to a position just between the iron column and the magnet disk, thereby shielding the magnetic attraction of the magnet disk on the iron column. At the same time, the end of the sealing plug stably seals the oil injection hole.

[0043] Figure 4 This is a partial cross-sectional view of the connection between the support frame, inclined rollers, magnet disk, guide rail, sealing plug, iron column, and shielding iron plate in the sand and gravel conveyor belt of the present invention. At this time, the shielding iron plate is moved away from between the iron column and the magnet disk. Subsequently, the iron column is magnetically attracted by the magnet disk and moves toward the side closer to the magnet disk, thereby opening the oil injection hole;

[0044] Figure 5 This is a partial enlarged view of the connection between the guide rail and the wrapping cover in the sand and gravel conveyor belt of the present invention;

[0045] Figure 6 It is a partial enlarged view of the connection relationship between the guide rail, driving cylinder, winding shaft and winding wheel in the sand and gravel conveyor belt of the present invention.

[0046] In the figure, 1. conveying frame; 2. driven wheel; 21. driving pulley; 22. linkage belt; 3. driving wheel; 4. conveying belt; 5. driving motor; 6. driving belt; 7. supporting frame; 71. first bearing seat; 72. magnet disk; 73. guide rail; 731. driving cylinder; 732. second bearing seat; 733. rewinding shaft; 734. rewinding wheel; 735. connecting rope; 736. driven pulley; 8. inclined roller; 81. roller shaft; 82. cavity layer; 83. oil injection hole; 84. spiral groove; 85. sponge strip; 86. oil filling hole; 87. sealing plug; 871. iron column; 872. reset spring; 9. shielding assembly; 91. guide groove; 92. shielding iron plate; 10. wrapping cover; 101. flexible tarpaulin; 102. fixed arc rod; 103. movable arc rod. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments are described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0048] A preparation process of waterproof and anti-seepage concrete, wherein the waterproof and anti-seepage concrete comprises the following raw materials in parts by weight: 300-350 parts of cement, 100-143 parts of water, 120-158 parts of silica fume, 500-600 parts of coarse aggregate, 320-450 parts of fine aggregate, 25-32 parts of fly ash, and 3-10 parts of an inorganic nano-anti-cracking and anti-seepage agent; wherein the cement is silicate cement.

[0049] The preparation process of the waterproof and anti-seepage concrete comprises the following steps:

[0050] S1: Prepare raw materials: cement, water, silica fume, coarse aggregate, fine aggregate, fly ash, and inorganic nano-anti-cracking and permeability-reducing agent;

[0051] S2: First, the inorganic nano anti-cracking and permeability reducing agent and water are mixed and stirred evenly to form mixed water for use;

[0052] S3: Cement, silica fume, fine aggregate and fly ash are then transported to the mixing base via a sand and gravel conveyor belt for mixing;

[0053] S4: The mixed water is introduced into the stirring base and stirred into a slurry;

[0054] S5: The coarse aggregate is then transported to the mixing base via a sand and gravel conveyor belt for mixing;

[0055] S6: After unloading the mixing base, it is transported to the pouring site by a mixer truck.

[0056] Reference Figure 1 、 Figure 2, wherein the sand and gravel conveyor belt in step S3 includes a conveyor frame 1, a driven wheel 2, a driving wheel 3, a conveyor belt 4, a driving motor 5, a driving belt 6, a support frame 7, and inclined rollers 8; the conveyor frame 1 extends obliquely upward toward the side of the mixing base and its upper end is fixed inside the mixing base, the driven wheel 2 is rotatably connected to the upper end of the conveyor frame 1 through a bearing, the driving wheel 3 is rotatably connected to the lower end of the conveyor frame 1 through a bearing, and the conveyor belt 4 is connected between the driven wheel 2 and the driving wheel 3. The driving motor 5 is fixed to the lower end of the conveyor frame 1 by bolts, and the driving belt 6 is connected between the driving motor 5 and the driving wheel 3 through a pulley. Meanwhile, a plurality of support frames 7 are provided and are all fixed to the conveyor frame 1 by bolts. The plurality of support frames 7 are evenly spaced along the extending direction of the conveyor frame 1, and the support frame 7 is in a "U" shape. Two inclined rollers 8 are provided in each support frame 7 and are distributed on both sides inside the support frame 7. The lower ends of the two inclined rollers 8 are rotatably connected inside the support frame 7, and the two inclined rollers 8 can support the conveyor belt 4. Meanwhile, two first bearing seats 71 are fixed to the middle of the support frame 7 by bolts, and a roller shaft 81 is welded at the center of the inclined roller 8 and its lower end is rotatably connected inside the first bearing seat 71 through a bearing.

[0057] Refer to Figure 2 、 Figure 3 , an air cavity layer 82 is further formed inside the inclined roller 8, and lubricating oil for lubricating the inclined roller 8 and the conveyor belt 4 is stored inside the air cavity layer 82. An oil injection hole 83 communicating with the air cavity layer 82 is formed on the upper side wall of the upper end of the inclined roller 8, and the liquid level of the lubricating oil is lower than the position of the oil injection hole 83. Meanwhile, a spiral groove 84 in a spiral shape is formed on the circumferential side of the inclined roller 8 and its upper end is located at the position of the oil injection hole 83, and a sponge strip 85 for absorbing the lubricating oil ejected from the oil injection hole 83 is embedded and fixedly bonded inside the spiral groove 84.

[0058] Refer to Figure 2 、 Figure 3 、 Figure 4 , an oil injection hole 86 communicating with the oil injection hole 83 is further formed on the upper end surface of the inclined roller 8, and a sealing plug 87 is provided at the upper end of the inclined roller 8, one end of which is embedded inside the oil injection hole 86 and simultaneously seals the oil injection hole 83. An iron column 871 is fixedly bonded to the end of the sealing plug 87 away from the oil injection hole 86, and a return spring 872 is further sleeved on the sealing plug 87. One end of the return spring 872 is connected to the iron column 871 and the other end is connected to the end surface of the inclined roller 8. A magnet disk 72 is fixed to the side of the support frame 7 at the position corresponding to the iron column 871 by bolts, and the magnet disk 72 can form a magnetic attraction force on the iron column 871 to pull the end of the iron column 871 out of the oil injection hole 83.

[0059] Refer to Figure 1 、 Figure 3 、 Figure 5, the conveyor frame 1 is also provided with a wrapping cover 10 for wrapping around the upper side of the conveyor belt 4, and guide rails 73 are welded at positions between the two sides of multiple support frames 7, and the guide rails 73 are located between the iron column 871 and the magnet disk 72, wherein the extension direction of the guide rail 73 is parallel to the extension direction of the conveyor frame 1; at the same time, the wrapping cover 10 includes a flexible tarpaulin 101, a fixed arc rod 102 and a plurality of movable arc rods 103, wherein the fixed arc rod 102 is bonded and fixed to the lower end of the flexible tarpaulin 101 and both ends are fixed at the lower end of the guide rail 73, and the plurality of movable arc rods 103 are bonded and fixed to the outer wall of the flexible tarpaulin 101, and at the same time, the plurality of movable arc rods 103 are evenly spaced along the extension direction of the flexible tarpaulin 101, and the two ends of the movable arc rod 103 are slidably connected to the guide rail 73.

[0060] Reference Figure 3 、 Figure 5 、 Figure 6 , the conveyor frame 1 is also provided with a shielding component 9 for shielding the magnetic attraction when the conveyor frame 1 is inspected and the inclined roller 8 is lubricated. The shielding component 9 includes a guide groove 91 and a shielding iron plate 92, wherein the guide groove 91 is opened in the guide rail 73, and the shielding iron plate 92 is fixed to the end of the movable arc rod 103 by bolts and embedded in the guide groove 91, and at the same time, a gap is left between the shielding iron plate 92 and the magnet disk 72, the shielding iron plate 92 and the iron column 871; wherein the upper end of the guide rail 73 is also fixed with a driving cylinder 731 by bolts, and the end of the piston rod of the driving cylinder 731 is fixed with a second The bearing seat 732, and the second bearing seat 732 is rotatably connected to the winding shaft 733 through the bearing, and the winding shaft 733 is fixed with a winding wheel 734 located in the guide groove 91, wherein the winding wheel 734 is provided with a connecting rope 735, and one end of the connecting rope 735 is fixedly connected to the winding wheel 734 and the other end is fixedly connected to the movable arc rod 103 near the upper end of the flexible tarpaulin 101, and the winding shaft 733 is also keyed to a driven pulley 736, and the end of the driven wheel 2 is keyed to the driving pulley 21, and a linkage belt 22 is also provided between the driven pulley 736 and the driving pulley 21.

[0061] Principle: When the gravel conveyor belt conveys materials, the driving motor 5 drives the driving wheel 3 to rotate through the driving belt 6, and the driving wheel 3 drives the conveyor belt 4 through the driven wheel 2 to convey the materials. At the same time, the two inclined rollers 8 in the support frame 7 support the conveyor belt 4, so that the conveyor belt 4 is supported in a V shape at the position of the support frame 7. This is conducive to the stable transmission of the materials by the conveyor belt 4 and reduces the possibility of the materials falling from the edge of the conveyor belt 4.

[0062] When the packing cover 10 is unfolded, the piston rod of the driving cylinder 731 is extended, thereby canceling the tension state of the driven pulley 736 and the linkage belt 22, and the driving cylinder 731 pushes the take-up wheel 734 to press against the inner wall of the guide groove 91, thereby pressing the connecting rope 735 wound up in the take-up wheel 734 to press against the inner wall of the guide groove 91, and finally completing the packing cover 10. The winding wheel 734 and the wrapping cover 10 are positioned so that the wrapping cover 10 can be stably wrapped on the upper side of the conveyor belt 4; at the same time, the shielding iron plate 92 just moves to the position between the iron column 871 and the magnet disk 72. Since there are gaps between the shielding iron plate 92 and the magnet disk 72, and between the shielding iron plate 92 and the iron column 871, the shielding iron plate 92 can shield the magnetic attraction of the magnet disk 72 on the iron column 871. Therefore, under the elastic restoring force of the reset spring 872, the end of the sealing plug 87 can be stably embedded in the oil injection hole 83 and the oil injection hole 83 is stably sealed, thereby preventing the lubricating oil from overflowing from the oil injection hole 83 when the inclined roller 8 is rolling normally; then the sand and gravel conveyor belt can perform normal material transmission operations;

[0063] When the sand and gravel conveyor belt has been used for a period of time and is under inspection and the inclined roller 8 is lubricated and maintained, the piston rod of the driving cylinder 731 is first retracted again, thereby driving the driven pulley 736 and the linkage belt 22 to be tensioned again through the second bearing seat 732 and the winding shaft 733, and then the reverse rotation of the driven wheel 2 can slowly drive the winding wheel 734 to unwind the connecting rope 735. Under the action of the weight of the wrapping cover 10 itself, the wrapping cover 10 can be folded at the lower end of the conveying frame 1. After the wrapping cover 10 is removed from the upper side of the conveyor belt 4, the sand and gravel conveyor belt can be easily inspected; at the same time, the shielding iron plate 92 is removed from between the iron column 871 and the magnet disk 72, thereby canceling the magnetic attraction of the shielding iron plate 92 between the iron column 871 and the magnet disk 72 Shielding effect, then the iron column 871 can be attracted by the magnet disk 72 and move toward the side close to the magnet disk 72 (but due to the pulling force of the return spring 872, the iron column 871 cannot cross the guide groove 91 and engage with the magnet disk 72), thereby opening the oil spray hole 83, and then starting the sand and gravel conveyor belt. After the inclined roller 8 rotates, under the action of centrifugal force, the lubricating oil can move to the position of the oil spray hole 83, and the lubricating oil overflows from the position of the oil spray hole 83 and can be absorbed by the sponge strip 85. As the sponge strip 85 absorbs, the spiral sponge strip 85 can spread the lubricating oil to various positions of the inclined roller 8, and then under the squeezing of the conveyor belt 4, stable and efficient lubrication can be achieved between the inclined roller 8 and the conveyor belt 4.

Claims

1. A process for preparing waterproof and anti-seepage concrete, characterized by: A waterproof and anti-seepage concrete comprises the following raw materials in parts by weight: 300-350 parts of cement, 100-143 parts of water, 120-158 parts of silica fume, 500-600 parts of coarse aggregate, 320-450 parts of fine aggregate, 25-32 parts of fly ash, and 3-10 parts of an inorganic nano-anti-cracking and anti-seepage agent; The preparation process of the waterproof and anti-seepage concrete comprises the following steps: S1: Prepare raw materials: cement, water, silica fume, coarse aggregate, fine aggregate, fly ash, and inorganic nano-anti-cracking and permeability-reducing agent; S2: First, the inorganic nano anti-cracking and permeability reducing agent and water are mixed and stirred evenly to form mixed water for use; S3: Cement, silica fume, fine aggregate and fly ash are then transported to the mixing base via a sand and gravel conveyor belt for mixing; S4: The mixed water is introduced into the stirring base and stirred into a slurry; S5: The coarse aggregate is then transported to the mixing base via a sand and gravel conveyor belt for mixing; S6: After unloading the mixing base, it is transported to the pouring site by a mixer truck.

2. The process for preparing waterproof and anti-seepage concrete according to claim 1, wherein: The cement is Portland cement.

3. The process for preparing waterproof and anti-seepage concrete according to claim 1, wherein: The sand and gravel conveyor belt comprises a conveyor frame (1) extending upward and obliquely toward one side of a stirring base, a driven wheel (2) rotatably connected to the upper end of the conveyor frame (1), a driving wheel (3) rotatably connected to the lower end of the conveyor frame (1), a conveyor belt (4) arranged between the driven wheel (2) and the driving wheel (3), a driving motor (5) fixed at the lower end of the conveyor frame (1), a driving belt (6) connected between the driving motor (5) and the driving wheel (3), a plurality of support frames (7) fixed on the conveyor frame (1) and evenly spaced along the extension direction of the conveyor frame (1), and two inclined rollers (8) rotatably connected to both sides of the support frame (7) and used to support both sides of the conveyor belt (4).

4. The process for preparing waterproof and anti-seepage concrete according to claim 3, wherein: Two first bearing seats (71) are provided in the middle of the support frame (7), a roller shaft (81) is fixed at the center of the inclined roller (8), the lower end of which is rotatably connected to the first bearing seat (71), a cavity layer (82) is provided in the inclined roller (8) for containing lubricating oil for lubricating the inclined roller (8) and the conveyor belt (4), an oil injection hole (83) communicating with the cavity layer (82) is provided on the upper end side wall of the inclined roller (8), and the liquid level of the lubricating oil is lower than the position of the oil injection hole (83).

5. The process for preparing waterproof and anti-seepage concrete according to claim 4, characterized in that: The circumferential side of the inclined roller (8) is provided with a spiral groove (84) with its upper end located at the position of the oil injection hole (83) and in a spiral line shape. A sponge strip (85) for absorbing lubricating oil sprayed from the oil injection hole (83) is embedded in the spiral groove (84).

6. The process for preparing waterproof and anti-seepage concrete according to claim 5, characterized in that: An oil injection hole (86) communicating with the oil injection hole (83) is provided at the upper end surface of the inclined roller (8), and a sealing plug (87) is provided at the upper end of the inclined roller (8), one end of which is embedded in the oil injection hole (86) and simultaneously seals the oil injection hole (83).

7. The process for preparing waterproof and anti-seepage concrete according to claim 6, characterized in that: An iron column (871) is fixed at one end of the sealing plug (87) away from the oil injection hole (86), and a return spring (872) is sleeved on the sealing plug (87), one end of which is connected to the iron column (871) and the other end is connected to the end face of the inclined roller (8). A magnet disk (72) is fixed at the side of the support frame (7) and at a position corresponding to the iron column (871) for forming a magnetic attraction force on the iron column (871) so that the end of the iron column (871) is pulled out from the oil injection hole (83). The conveying frame (1) is also provided with a shielding component (9) for shielding the magnetic attraction force when the conveying frame (1) is inspected and the inclined roller (8) is lubricated.

8. The process for preparing waterproof and anti-seepage concrete according to claim 7, characterized in that: The conveying frame (1) is also provided with a wrapping cover (10) for wrapping around the upper side of the conveying belt (4); a guide rail (73) whose extension direction is parallel to the extension direction of the conveying frame (1) is fixed at positions between the two sides of the plurality of support frames (7); the wrapping cover (10) comprises a flexible tarpaulin (101), a fixed arc rod (102) connected to the lower end of the flexible tarpaulin (101) and fixed at both ends to the lower end of the guide rail (73); and a plurality of movable arc rods (103) connected to the outer wall of the flexible tarpaulin (101) and slidably connected to the guide rail (73) at both ends.

9. The process for preparing waterproof and anti-seepage concrete according to claim 8, characterized in that: The guide rail (73) is located between the iron column (871) and the magnet disk (72); the shielding assembly (9) comprises a guide groove (91) provided in the guide rail (73); a shielding iron plate (92) fixed to the end of the movable arc rod (103) and embedded in the guide groove (91); and gaps are left between the shielding iron plate (92) and the magnet disk (72), the shielding iron plate (92) and the iron column (871).

10. The process for preparing waterproof and anti-seepage concrete according to claim 9, characterized in that: A driving cylinder (731) is provided at the upper end of the guide rail (73), a second bearing seat (732) is fixed to the end of the piston rod of the driving cylinder (731), a reel (733) is rotatably connected to the second bearing seat (732), a reel (734) located in the guide groove (91) is fixed to the reel (733), a connecting rope (735) is provided on the reel (734), one end of which is connected to the reel (734) and the other end of which is connected to the movable arc rod (103) near the upper end of the flexible rain cloth (101), a driven pulley (736) is also provided on the reel (733), a driving pulley (21) is provided at the end of the driven pulley (2), and a linkage belt (22) is provided between the driven pulley (736) and the driving pulley (21).

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