UHPC preparation device and preparation method thereof

Abstract

The invention relates to the technical field of UHPC preparation, and discloses a UHPC preparation device and a preparation method thereof.The preparation device comprises a preparation tank and an end cover fixed to the preparation tank, a motor is arranged above the preparation tank, the driving end of the motor is connected with a transmission, the output end of the transmission is connected with a stirring rod, and a plurality of ring seats are fixed to the outer side of the stirring rod; stirring plates are symmetrically arranged on the outer side of the ring seat and located on the inner side of the preparation tank, and the water homogenizing part is arranged on the outer side of the stirring rod; the feeding part penetrates through the end cover and is communicated with the water homogenizing part; according to the fiber mixing device, water is injected into the stirring rod and the stirring plate according to needs, and the water is discharged into the preparation tank through the drainage holes penetrating through the stirring plate, so that water is injected into materials in the preparation tank in a layered mode in the rotating process of the stirring plate, and the stirring and mixing efficiency and uniformity of the water and the materials are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of UHPC preparation, and in particular to a UHPC preparation device and a preparation method thereof. Background Art

[0002] UHPC is usually made of a mixture of materials such as cement, silica fume, stone powder, machine-made sand, quartz, water reducer, water and steel fiber. It is usually necessary to open the end cover, add cement, silica fume, stone powder, machine-made sand, quartz, water reducer, water and steel fiber into the preparation tank as needed, start the motor, and control the rotation speed of the transmission at the same time. The motor and transmission are used to drive the stirring rod and the stirring plate to rotate at different speeds, so that the stirring plate can stir and mix the materials, so that the materials are mixed in the preparation tank to form UHPC slurry. However, traditional UHPC preparation still has problems in actual operation.

[0003] For example, in actual operation, water is usually directly injected into the preparation tank from the top of the preparation tank, causing the water to fall to the upper layer of the material in the preparation tank and need to gradually penetrate the material, resulting in poor stirring and mixing efficiency and lack of uniformity. Summary of the invention

[0004] The present invention provides a UHPC preparation device and a preparation method thereof, wherein water is injected into a stirring rod and a stirring plate as required, and the water is discharged into a preparation tank through drainage holes penetrating through the stirring plate, so that water is injected into the material in the preparation tank in layers during the rotation of the stirring plate, thereby improving the efficiency and uniformity of the stirring and mixing of water and material.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows: In a first aspect, a UHPC preparation device and a preparation method thereof include: a preparation tank and an end cover fixed on the preparation tank, a motor is arranged above the preparation tank, a transmission is connected to the driving end of the motor, a stirring rod is connected to the output end of the transmission, a plurality of ring seats are fixed to the outside of the stirring rod, stirring plates are symmetrically arranged on the outside of the ring seat, and the stirring plates are located on the inside of the preparation tank, and also include: The water-distributing part is arranged on the outside of the stirring rod and penetrates the end cover, and penetrates the stirring rod, the ring seat and the stirring plate to supply water and stir during preparation; The feeding part is arranged through the end cover and fixed on the inner wall of the preparation tank, and is connected with the water distribution part to distribute the steel fiber into the preparation tank; The fiber mixing section is arranged on the stirring plate and the ring seat and is connected to the feeding section to flexibly stir the steel fibers; The water equalizing part includes a supply connection member and a drainage member, wherein the supply connection member is arranged on the outside of the stirring rod and passes through the end cover, and the drainage member is connected with the supply connection member and passes through the stirring rod and the stirring plate; The feeding part includes a regulating and supplying part and a uniformly discharging part, wherein the regulating and supplying part is arranged outside the supply connecting part, and the uniformly discharging part is connected with the regulating and supplying part and is arranged in the preparation tank; The fiber mixing part comprises a positioning piece and a soft mixing piece. The positioning piece is arranged outside the stirring rod and below the connecting piece. The soft mixing piece is elastically arranged on the stirring plate and the ring seat and plugged with the positioning piece.

[0006] Further, the connecting piece includes: The L seat is fixed above the preparation tank, is fixedly connected to the motor and the transmission, and is located outside the output end of the transmission; The rotary sleeve is fixed to a side of the L seat close to the stirring rod through a fixing component and is located at the output end of the transmission and the outer side of the stirring rod; There are four connecting rods, which are evenly fixed at one end of the stirring rod and connected to the output end of the transmission; The water supply parts are arranged through the rotary sleeve and the end cover.

[0007] Further, the water supply parts include: A sleeve is rotatably disposed at the output end of the transmission and the outer side of the stirring rod; L tube, passing through the rotary sleeve and one side of the sleeve for fixed connection; A connecting pipe, one end of which passes through the end cover and is fixed thereto, and the other end of which passes through the end of the L-tube away from the sleeve; The arc rubber sleeve is fixedly mounted on the outside of the connecting pipe and fits with the inner wall of the end of the L-tube away from the sleeve.

[0008] Furthermore, the drainage member comprises: A water channel is opened through one end of the stirring rod close to the connecting rod; The water pipe is symmetrically arranged to penetrate both sides of the ring seat and is connected to the waterway; The drainage hole is arranged inside the stirring plate, and one end of the drainage hole is connected with the water pipe, and the other end of the drainage hole passes through the stirring plate in a clockwise direction.

[0009] Furthermore, the supply adjusting part includes: The electric rod is fixed on the outside of the rotary sleeve and is located below the L tube; A support frame fixedly connected to the telescopic end of the electric pole; The switch is fixed at the end of the support frame away from the electric rod and is located below the L tube; The rubber plate is fixed to the end of the support frame away from the electric rod, is located on one side of the switch, and passes through the side of the L-tube close to the support frame; Supply parts, through-connecting pipes and L-tube settings.

[0010] Further, the supply parts include: A through pipe is arranged to penetrate a side of the L-tube away from the connecting pipe and the sleeve, and is located on a side of the rubber plate away from the switch; An electric control valve is arranged at the end of the through pipe away from the L pipe; The feeding hopper is fixedly arranged through the end cover, and one end thereof is fixedly connected through one side of the connecting pipe; Vibrator, fixed on the outside of the feeding hopper.

[0011] Further, the uniformly arranged member comprises: A spiral tube fixed to the inner wall of the preparation tank; An inclined tube, one end of which is fixed to the end of the electric control valve away from the through pipe, and the other end is connected to one end of the spiral tube; The rubber flaps are provided in a plurality of groups, each group having two rubber flaps. The rubber flaps in each group are arranged through the spiral surface of the spiral tube close to the end cover and are evenly distributed.

[0012] Furthermore, the positioning member includes: The pressure plate is movably sleeved on the outside of the stirring rod and is fixedly connected to the telescopic end of the electric rod; The guide groove is provided on the side of the pressure plate close to the ring seat; There are two jacks, which penetrate the ring seat and the stirring plate and are symmetrically opened on one side close to the end cover; There are two T-bars, one end of each of the two T-bars is movably disposed inside the guide groove, and the other end of each T-bar extends to the inside of the insertion hole; The positioning rod is fixed on the outer side of the T rod through a connecting component.

[0013] Further, the soft mixing element comprises: The grooves are symmetrically arranged on the outer side of the ring seat; A first spring plate is arranged inside the groove, and one end of the first spring plate is fixedly connected to the ring seat, and the other end of the first spring plate is fixedly connected to one end of the stirring plate; A storage slot is provided at the other end of the stirring plate; A second spring plate is arranged on the inner side of the receiving groove, and one end of the second spring plate is fixedly connected to the stirring plate; The stirring plate is fixed to the other end of the second spring plate, is in contact with the other end of the stirring plate, and is located outside the positioning rod; The interconnection plate is symmetrically arranged on the inner side of the preparation tank and connected to the stirring plate.

[0014] A method for preparing UHPC, the method for preparing UHPC comprising: Put 645-665 parts by weight of cement, 223-233 parts by weight of silica fume, 105-115 parts by weight of stone powder, 880-920 parts by weight of machine-made sand, 190-210 parts by weight of quartz sand, and 28-32 parts by weight of water reducing agent into a preparation tank; The starter motor controls the rotation of the stirring rod and the stirring plate through the transmission, so that the stirring rod and the stirring plate are dry mixed at 20-40 rpm for 25-50 seconds to form a homogeneous dry mixture; Connect the water delivery pipeline to the connecting pipe, add 164-174 parts by weight of water twice, allow the water to enter the waterway through the L tube, and be discharged into the homogenized dry mix in layers through the drainage holes. When adding water for the first time, adjust the transmission to drive the stirring plate and the stirring rod to rotate at 50-70 rpm. Stir for 40-70 seconds after the first addition of water, continue stirring for 25-50 seconds after the second water addition, and control the total water addition and stirring time to 65-130 seconds to form a matrix slurry with a fluidity of ≥950 mm; Separate the water delivery pipeline from the connecting pipe, and connect the high-pressure gas delivery pipeline to the connecting pipe. At the same time, add 50 parts by weight of steel fiber into the feeding hopper in 2-3 batches. At the same time, control the electric rod to retract, trigger the switch and insert the rubber sheet into the L tube. Start the vibrator to transport the steel fiber in the feeding hopper to the connecting pipe, and use high-pressure gas to blow the steel fiber into the spiral tube and pass through the rubber petal to be discharged into the slurry. Each batch is separated by 10-15 seconds, and the transmission is controlled to drive the stirring rod, stirring plate and stirring plate to stir for 90-120 seconds at 30-50 rpm.

[0015] The above solution of the present invention includes at least the following beneficial effects: By setting up the water equalizing part, the staff can connect the water delivery pipeline with the supply connection piece set in the water equalizing part as needed, supply water to the drainage part through the supply connection piece, and control the rotation of the agitator rod and the agitator plate at the same time. The drainage part will rotate together with the agitator plate. During the rotation, the water in the drainage part will pass through the agitator plate and be discharged to different heights of the material in the preparation tank, thereby realizing the layered injection of water into the material and stirring and mixing the material, thereby improving the mixing efficiency and uniformity of water and material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the overall three-dimensional structure of a UHPC preparation device provided in an embodiment of the present invention; Figure 2 A cross-sectional view of a UHPC preparation device provided in an embodiment of the present invention; Figure 3 A schematic diagram of the three-dimensional structure of a motor, a stirring rod, a stirring plate, a spiral tube and an L-tube combination provided in an embodiment of the present invention; Figure 4 A schematic diagram of the three-dimensional structure of the stirring rod, stirring plate, L-tube, ring seat and through-tube combination provided in an embodiment of the present invention; Figure 5 The embodiment of the present invention provides Figure 4 Schematic diagram of the structure at A in FIG. Figure 6 A schematic diagram of the three-dimensional structure of a pressure plate and a T-bar combination provided in an embodiment of the present invention; Figure 7 A cross-sectional plan view of a stirring plate, a ring seat and a stirring plate assembly provided in an embodiment of the present invention; Figure 8 The embodiment of the present invention provides Figure 4 Schematic diagram of the structure at B in FIG. Fig. 9 The embodiment of the present invention provides Figure 4 Schematic diagram of the structure at C in FIG. Fig.10 A three-dimensional exploded view of an L-tube, a through-tube, an inclined-tube combination, and a connecting tube provided in an embodiment of the present invention; Fig.11 A cross-sectional plan view of a transmission, agitator and sleeve assembly provided in an embodiment of the present invention; Fig.12 A schematic diagram of a cross-sectional three-dimensional structure of a stirring plate and a stirring plate combination provided in an embodiment of the present invention; Fig.13 A schematic diagram of the three-dimensional structure of a spiral tube provided in an embodiment of the present invention; Fig.14 The embodiment of the present invention provides Fig.13 Schematic diagram of the structure at D in .

[0017] Description of reference numerals: In the figure: 1. preparation tank; 2. support foot; 3. cover clamp; 4. end cover; 5. discharge pipe; 6. solenoid valve; 7. suction pipe; 8. transparent plate; 9. motor; 10. transmission; 11. stirring rod; 12. ring seat; 13. stirring plate; 14. L seat; 15. rotary sleeve; 16. connecting rod; 17. sleeve; 18. shaft seal; 19. L tube; 20. connecting pipe; 21. arc rubber sleeve; 22. water channel; 23. electric rod; 24. pressure plate; 25. guide groove; 26. T rod; 27 , jack; 28, groove; 29, first spring plate; 30, water pipe; 31, rubber ring; 32, drainage hole; 33, storage groove; 34, second spring plate; 35, stirring plate; 36, interconnection plate; 37, positioning hole; 38, connecting rod; 39, positioning rod; 40, triangular plate; 41, support frame; 42, switch; 43, rubber plate; 44, through pipe; 45, electric control valve; 46, feeding hopper; 47, vibrator; 48, inclined tube; 49, spiral tube; 50, rubber petal. DETAILED DESCRIPTION

[0018] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0019] like Figures 1 to 14As shown, an embodiment of the present invention provides a UHPC preparation device and a preparation method thereof, comprising: a preparation tank 1 and an end cover 4 fixed on the preparation tank 1, a motor 9 is arranged above the preparation tank 1, a transmission 10 is connected to the driving end of the motor 9, a stirring rod 11 is connected to the output end of the transmission 10, a plurality of ring seats 12 are fixed to the outside of the stirring rod 11, stirring plates 13 are symmetrically arranged on the outside of the ring seats 12, and the stirring plates 13 are located on the inner side of the preparation tank 1, and further comprising: The water equalizing part is arranged on the outside of the stirring rod 11 and penetrates the end cover 4, and penetrates the stirring rod 11, the ring seat 12 and the stirring plate 13 to supply water and stir during preparation; The feeding part is arranged through the end cover 4 and fixed to the inner wall of the preparation tank 1 and is connected with the water distribution part to distribute the steel fiber into the preparation tank 1; The fiber mixing section is arranged on the stirring plate 13 and the ring seat 12 and is connected to the feeding section to flexibly stir the steel fibers; The water equalization part includes a supply connection member and a drainage member. The supply connection member is arranged on the outside of the stirring rod 11 and passes through the end cover 4. The drainage member is connected to the supply connection member and passes through the stirring rod 11 and the stirring plate 13. The feeding part includes a regulating and supplying part and a uniformly discharging part. The regulating and supplying part is arranged outside the supply connecting part. The uniformly discharging part is connected with the regulating and supplying part and is arranged in the preparation tank 1. The fiber mixing part includes a positioning piece and a soft mixing piece. The positioning piece is arranged outside the stirring rod 11 and below the supply and connection piece. The soft mixing piece is elastically arranged on the stirring plate 13 and the ring seat 12 and plugged with the positioning piece.

[0020] Specifically, four supporting legs 2 are symmetrically fixed at the bottom of the preparation tank 1, cover clamps 3 are evenly fixed on the outside of the preparation tank 1, and the cover clamps 3 clamp and fix the end cover 4. A discharge pipe 5 is fixedly penetrated on the side of the preparation tank 1 away from the end cover 4, and a solenoid valve 6 is arranged on the outside of the discharge pipe 5. A straw 7 is fixedly penetrated inside the end cover 4, and a transparent plate 8 is arranged inside the preparation tank 1.

[0021] The preparation tank 1 can provide a storage and stirring mixing space for materials, the support leg 2 can provide a stable support for the preparation tank 1, and can provide a through channel for the fixed parts, and can stably support the L seat 14 and the cover clamp 3, the cover clamp 3 can rotate under the support of the preparation tank 1 under the operation of the staff, and can clamp the fixed end cover 4 or release the fixed end cover 4 under the operation of the staff, the preparation tank 1 can provide support for the end cover 4, the end cover 4 can cover the opening of the preparation tank 1, and the discharge pipe 5 can provide a discharge channel for the material in the preparation tank 1, and the suction pipe 7 can provide a connection space for the vacuum pipeline.

[0022] In the actual application process of this embodiment: the staff can operate the cover clamp 3 to release the fixation of the end cover 4 according to the actual needs, and remove the end cover 4 from the preparation tank 1, and then inject the material for UHPC preparation into the inner side of the preparation tank 1, and then cover the end cover 4 on the preparation tank 1, and fix the end cover 4 with the cover clamp 3. When the end cover 4 is covered on the preparation tank 1, the end cover 4 will drive the arc rubber sleeve 21 to move together through the connecting pipe 20. It is necessary to move the end cover 4 to ensure that the arc rubber sleeve 21 can be driven by the connecting pipe 20 to insert into the inner side of the L tube 19 when the end cover 4 is covered on the preparation tank 1. After that, the staff needs to start the motor 9 under the support of the L seat 14, so that the motor 9 drives the transmission 10 to operate, and uses the output end of the transmission 10 to drive the stirring rod 11 to rotate counterclockwise. The stirring rod 11 will use external force to drive the stirring plate 13 to rotate counterclockwise in the preparation tank 1 through the ring seat 12, so that the stirring plate 13 can use the rotational power to stir and mix the materials in the preparation tank 1.

[0023] As a preferred embodiment of the present invention, the connecting member comprises: The L seat 14 is fixed above the preparation tank 1, and is fixedly connected to the motor 9 and the transmission 10, and is located outside the output end of the transmission 10; The rotary sleeve 15 is fixed to a side of the L seat 14 close to the stirring rod 11 through a fixing member, and is located at the output end of the transmission 10 and the outer side of the stirring rod 11; There are four connecting rods 16, which are evenly fixed at one end of the stirring rod 11 and connected to the output end of the transmission 10; The water supply part is arranged through the rotary sleeve 15 and the end cover 4.

[0024] Specifically, the L seat 14 can provide stable support for the motor 9 and the transmission 10 under the support of the preparation tank 1, and can provide a penetration and rotation space for the output end of the transmission 10. The L seat 14 can provide stable support for the rotary sleeve 15. The rotary sleeve 15 can provide a rotation space for the driving end and the stirring rod 11 of the transmission 10, and can provide a penetration channel for the stirring rod 11, and can provide rotation support for the sleeve 17 through the bearing. The connecting rod 16 can provide support for the stirring rod 11 under the support of the output end of the transmission 10, and can drive the stirring rod 11 to rotate together with the output end of the transmission 10.

[0025] Water supply parts include: The sleeve 17 is rotatably disposed at the output end of the transmission 10 and the outer side of the stirring rod 11; L tube 19, passing through the rotary sleeve 15 and one side of the sleeve 17 and fixedly connected; A connecting pipe 20, one end of which penetrates the end cover 4 and is fixed thereto, and the other end of which penetrates the end of the L-tube 19 away from the sleeve 17; The arc rubber sleeve 21 is fixedly mounted on the outer side of the connecting pipe 20 and is in contact with the inner wall of one end of the L-tube 19 away from the sleeve 17 .

[0026] Specifically, a shaft seal 18 is provided between the sleeve 17 and the stirring rod 11, and the shaft seal 18 is located below the connecting rod 16. The sleeve 17 can provide a rotation space for the output end of the transmission 10 and the stirring rod 11. The shaft seal 18 can play a certain waterproof effect and enable the stirring rod 11 to rotate under the action of external force. The rotary sleeve 15 can provide support for the L-tube 19, and the L-tube 19 can provide support and positioning for the sleeve 17 under the support of the rotary sleeve 15. The end cover 4 can firmly support the connecting pipe 20, and the connecting pipe 20 can provide a circulation channel for water and gas, and can provide a firm support for the arc rubber sleeve 21. The arc rubber sleeve 21 has an arc, which can be conveniently inserted into the inner side of the L-tube 19, and the arc rubber sleeve 21 is elastic, and can fit with the inner wall of the L-tube 19 after being inserted into the L-tube 19 to play a sealing role, and the staff can use a plug to block the feeding hopper 46 according to the actual needs to play a sealing role.

[0027] Drainage parts include: A water channel 22 is provided through one end of the stirring rod 11 close to the connecting rod 16; The water pipe 30 is symmetrically arranged to penetrate both sides of the ring seat 12 and communicate with the water channel 22; The drainage hole 32 is formed inside the stirring plate 13 , and one end of the drainage hole 32 is connected to the water pipe 30 , and the other end of the drainage hole 32 passes through the stirring plate 13 in a clockwise direction.

[0028] Specifically, a rubber ring 31 is fixed to the outer side of the stirring plate 13, and the rubber ring 31 is located on the inner side of the groove 28 and fits with the ring seat 12 to play a sealing role. The stirring rod 11 can provide an opening space for the waterway 22, and the ring seat 12 can provide a stable support for the water pipe 30. The waterway 22 and the water pipe 30 can provide a circulation channel for water. The stirring plate 13 can provide an opening space for the drainage hole 32, and the drainage hole 32 can provide a discharge channel for water.

[0029] In the actual application of this embodiment, the staff can use the fixing parts to connect the water conveying pipeline with the connecting pipe 20 according to the actual needs, so that the water enters the inner side of the connecting pipe 20 through the pipeline, and at the same time, the motor 9 is started to drive the stirring plate 13 to rotate to stir the material. At the same time, the water entering the connecting pipe 20 will flow into the inner side of the L-tube 19 under the action of gravity, and flow along the L-tube 19 through the rotary sleeve 15 and the sleeve 17 to be injected into the inner side of the water channel 22 from the gaps of the four connecting rods 16, so that the water flows along the water channel 22 under the action of gravity and fills the water channel 22. At the same time, the water will pass through the water channel 22 through the stirring rod 11 into the inner side of the water pipe 30, and flow along the water pipe 30 into the inner side of the drainage hole 32. At the same time, as the stirring plate 13 rotates, the stirring will generate centrifugal force and use the rotational power to disturb the material, so that the water can be discharged from the stirring plate 13 into the material through the drainage hole 32 immediately after the material is disturbed, and then use the method as shown in the figure. Figure 3The stirring plate 13 shown realizes multi-layer water injection into the material, thereby improving the water penetration efficiency, and the mixing efficiency and uniformity of water and material.

[0030] In another preferred embodiment of the present invention, the supply member comprises: The electric rod 23 is fixed on the outside of the rotary sleeve 15 and is located below the L-tube 19; The support frame 41 is fixedly connected to the telescopic end of the electric rod 23; The switch 42 is fixed to the end of the support frame 41 away from the electric rod 23 and is located below the L-tube 19; The rubber plate 43 is fixed to one end of the support frame 41 away from the electric rod 23 and is located on one side of the switch 42 and passes through one side of the L-tube 19 close to the support frame 41; The supply parts are arranged through the connecting pipe 20 and the L pipe 19.

[0031] Specifically, the rotary sleeve 15 can provide stable support for the electric rod 23, the electric rod 23 can provide support for the support frame 41 through the pressure plate 24, the support frame 41 can stably support the switch 42, and when the switch 42 is squeezed and triggered, the vibrator 47 will be energized and the electric control valve 45 can be controlled to open the channel. The rubber plate 43 is made of rubber material and is elastic. It can fit the L tube 19 by elasticity, and the support frame 41 can provide stable support for the rubber plate 43.

[0032] Supplied parts include: The through pipe 44 is arranged to penetrate the side of the L-tube 19 away from the connecting pipe 20 and the sleeve 17, and is located on the side of the rubber plate 43 away from the switch 42; The electric control valve 45 is arranged at one end of the through pipe 44 away from the L pipe 19; The feeding hopper 46 is fixedly arranged through the end cover 4, and one end thereof is fixedly connected through one side of the connecting pipe 20; The vibrator 47 is fixed on the outside of the feeding hopper 46 .

[0033] Specifically, the vibrator 47 will generate vibration after being started and can transmit the vibration to the feeding hopper 46. The through pipe 44 can provide a through channel for high-pressure air, and the rubber plate 43 will play a sealing role after being inserted into the L-tube 19 and fitting with the inner wall of the L-tube 19 to prevent the high-pressure gas from passing through the L-tube 19 and entering the sleeve 17. The electric control valve 45 can be opened or closed under the control of the switch 42. When the squeeze on the switch 42 disappears, it will pop up and control the electric control valve 45 to close the channel. The feeding hopper 46 can provide storage space for steel fibers under the support of the connecting pipe 20, and can use the inclination angle and the vibration generated by the vibrator 47 to feed the steel fibers into the connecting pipe 20.

[0034] The equalizing parts include: The spiral tube 49 is fixed to the inner wall of the preparation tank 1; The inclined tube 48 has one end fixed to the end of the electric control valve 45 away from the through tube 44 and the other end connected to one end of the spiral tube 49; The rubber petals 50 are provided in multiple groups, each group having two rubber petals 50 . The rubber petals 50 in each group are arranged through the spiral surface of the spiral tube 49 close to the end cover 4 and are evenly distributed.

[0035] Specifically, the preparation tank 1 can provide stable support for the spiral tube 49, the space between the spiral tube 49 and the stirring rod 11 can provide rotation space for the stirring plate 13 and the stirring plate 35, the connecting tube 20, the L tube 19, the through tube 44, the electric control valve 45, the inclined tube 48 and the spiral tube 49 can provide movement space and guidance for the steel fiber and the gas, and the spiral tube 49 can provide stable support for the rubber flap 50. The rubber flap 50 is elastic and can be elastically fitted together to play a sealing role, and can be deformed under the push of high-pressure gas, thereby providing a channel for the steel fiber and the gas to be discharged from the spiral tube 49 to the preparation tank 1. The spiral tube 49 is a spiral triangular structure.

[0036] In the actual application of this embodiment, before injecting steel fiber into the preparation tank 1, the staff needs to control the electric rod 23 to contract, so that the electric rod 23 uses the telescopic end to drive the pressure plate 24 to move upward, and drives the support frame 41 to move upward together through the pressure plate 24, so that the support frame 41 uses external force to drive the switch 42 and the rubber plate 43 to move upward together, so that the rubber plate 43 can be inserted into the inner side of the L tube 19 and fit with the inner wall of the L tube 19, and at the same time, the support frame 41 will push the switch 42 to contact the outer wall of the L tube 19, and under the resistance of the L tube 19, the switch 42 is squeezed and triggered, and then the vibrator 47 is controlled to start, and the electric control valve 45 is controlled to open the channel, and then the water delivery pipeline is removed from the connecting pipe 20, and the pipeline for delivering high-pressure gas is connected to the connecting pipe 20 by a fixing component, so that the high-pressure gas can pass through the connecting pipe 20 is blown into the space between the L tube 19 and the rubber plate 43, the through tube 44, the inclined tube 48 and the spiral tube 49, and then the staff can inject the steel fiber into the inner side of the feeding hopper 46, so that the feeding hopper 46 uses the vibration of the vibrator 47 to disperse and move the steel fiber to the inner side of the connecting tube 20, and then the steel fiber entering the connecting tube 20 will be blown by the high-pressure gas through the L tube 19 and enter the inner side of the through tube 44, and then pass through the through tube 44 and the electric control valve 45 to enter the inner side of the inclined tube 48, and under the push of the high-pressure gas and the guidance of the inclined tube 48, the steel fiber is blown and enters the inner side of the spiral tube 49, and then the rubber flap 50 is opened under the action of the high-pressure gas, providing a channel for the steel fiber to be discharged into the preparation tank 1, so that the steel fiber can be more dispersedly added to the preparation tank 1, thereby improving the effect and efficiency of uniform mixing of the steel fiber.

[0037] As a preferred embodiment of the present invention, the positioning member includes: A pressure plate 24 is movably sleeved on the outside of the stirring rod 11 and fixedly connected to the telescopic end of the electric rod 23. The pressure plate 24 is fixedly connected to an end of the support frame 41 away from the switch 42; The guide groove 25 is provided on a side of the pressure plate 24 close to the ring seat 12; There are two plug holes 27, which penetrate the ring seat 12 and the stirring plate 13 and are symmetrically opened on one side close to the end cover 4; There are two T-rods 26, one end of each T-rod 26 is movably disposed inside the guide slot 25, and the other end of each T-rod 26 extends to the inside of the insertion hole 27; The positioning rod 39 is fixed to the outer side of the T rod 26 through a connecting component.

[0038] Specifically, the electric rod 23 can use the telescopic end to provide support for the pressure plate 24, the pressure plate 24 can provide an opening space for the guide groove 25, the guide groove 25 can provide a moving guide for the T-rod 26, and the socket 27 can provide an insertion space for the T-rod 26, so that the T-rod 26 can connect the stirring plate 13 and the ring seat 12 after being inserted into the socket 27.

[0039] Soft mixing parts include: The groove 28 is symmetrically arranged on the outer side of the ring seat 12; A first spring plate 29 is disposed inside the groove 28, and one end of the first spring plate 29 is fixedly connected to the ring seat 12, and the other end of the first spring plate 29 is fixedly connected to one end of the stirring plate 13; The receiving groove 33 is provided at the other end of the stirring plate 13; The second spring plate 34 is disposed inside the receiving groove 33, and one end of the second spring plate 34 is fixedly connected to the stirring plate 13; The stirring plate 35 is fixed to the other end of the second spring plate 34, and is in contact with the other end of the stirring plate 13, and is located outside the positioning rod 39; The interconnection plate 36 is symmetrically arranged on the inner side of the preparation tank 1 and connected to the stirring plate 35 .

[0040] Specifically, the soft mixing component also includes: a triangular plate 40, which is fixed on the stirring plate 13 and the stirring plate 35, and is located on one side of the stirring plate 13 and the stirring plate 35 in the counterclockwise direction with the stirring rod 11 as the center of the circle, and one end of the stirring plate 35 extends to the inner side of the storage groove 33, and a positioning hole 37 is formed through one side of the stirring plate 35 and the stirring plate 13 close to the end cover 4, and the positioning hole 37 is located on the outside of the positioning rod 39, and the positioning rod 39 and the T rod 26 are connected to each other by a connecting rod 38.

[0041] The ring seat 12 can provide an opening space for the groove 28, the groove 28 can provide an insertion space for the stirring plate 13 and the rubber ring 31, and can provide a storage space and a through channel for the first spring plate 29, the ring seat 12 can provide support for the first spring plate 29, the first spring plate 29 is elastic, can be deformed under the action of external force, and will rebound after the external force disappears, and can be deformed after the steel fiber in the material resists the external force, and the first spring plate 29 can provide support for the stirring plate 13, the stirring plate 13 can provide an opening space for the storage groove 33, the storage groove 33 can provide a storage space for the second spring plate 34, the second spring plate 34 is the same as the material and structure of the lower spring plate, and can provide support for the stirring plate 35, and the stirring rod 11 can drive the stirring plate 13 to rotate through the ring seat 12 and the first spring plate 29, and the stirring plate 13 can be driven by the second spring plate 34 The stirring plate 35 rotates together, and the staff can open the end cover 4 according to the actual needs after the UHPC slurry is prepared and discharged, and push the stirring plate 35 and the stirring plate 13 to move in the direction close to the stirring rod 11 through the interconnecting plate 36, and make the stirring plate 35 squeeze the second spring plate 34 to fold and deform, and make the stirring plate 13 squeeze the first spring plate 29 to fold and deform, so that the first spring plate 29 is stored in the inner side of the groove 28, and the second spring plate 34 is stored in the inner side of the storage groove 33, and then the electric rod 23 is extended in the air, so that the electric rod 23 pushes the T rod 26 to insert into the inner side of the socket 27 through the pressure plate 24, and the T rod 26 drives the connecting rod 38 and the positioning rod 39 to move downward together and insert into all the positioning holes 37, so as to fix and reset the stirring plate 13 and the stirring plate 35, and the interconnecting plate 36 can connect all the stirring plates 35 to each other.

[0042] In the actual application of this embodiment, when the telescopic end of the electric rod 23 is controlled to move upward, the electric rod 23 will use the telescopic end to drive the pressure plate 24 to move upward together, and the pressure plate 24 will drive the T rod 26 to move upward together. At the same time, the T rod 26 will drive the positioning rod 39 to move synchronously through the connecting rod 38. When the rubber plate 43 is inserted into the inner side of the L tube 19 and fits with the inner wall of the L tube 19, the T rod 26 will be driven by the pressure plate 24 to be pulled out from the socket 27 opened on the stirring plate 13 and be located in the socket opened on the ring seat 12. 27, and at the same time, the T rod 26 will drive the positioning rod 39 to be pulled out of the positioning hole 37 through the connecting rod 38, thereby releasing the positioning effect on the stirring plate 35 and the stirring plate 13, and then the first spring plate 29 will use the rebound force under the support of the ring seat 12 to push the stirring plate 13 to move away from the ring seat 12, so that the stirring plate 13 drives the rubber ring 31 to move out of the groove 28, and at the same time, the second spring plate 34 will use the rebound force under the support of the stirring plate 13 to push the stirring plate 35 to move away from the ring seat 12, so that the stirring plate 35 is retracted. The stirring plate 35 is moved out of the preparation tank 33, and the stirring plate 35 drives the interconnecting plate 36 to move together, so that the stirring rod 11 can use the rotational power to drive the first spring plate 29 to rotate counterclockwise through the ring seat 12, and the first spring plate 29 uses the rotational power to push the stirring plate 13 to rotate counterclockwise, and the stirring plate 13, the stirring plate 35, the first spring plate 29 and the second spring plate 34 cooperate with each other to stir the materials and steel fibers in the preparation tank 1. The mixing plate 35 and the stirring plate 13 will drive the triangular plate 40 to rotate together, and use the triangular structure of the triangular plate 40 to push the material. When the stirring plate 35 and the stirring plate 13 drive the triangular plate 40 to contact the steel fiber, they will first push the steel fiber and the material to be disturbed and mixed, and then the stirring plate 35 or the stirring plate 13 will push the first spring plate 29 or the second spring plate 34 to deform under the resistance of the steel fiber, so that the stirring plate 35 and the stirring plate 13 can be used to flexibly stir the steel fiber and the material, thereby reducing the probability of steel fiber breaking during the stirring and mixing process.

[0043] As a preferred embodiment of the present invention, a method for preparing UHPC includes: Put 645-665 parts by weight of cement, 223-233 parts by weight of silica fume, 105-115 parts by weight of stone powder, 880-920 parts by weight of machine-made sand, 190-210 parts by weight of quartz sand, and 28-32 parts by weight of water reducing agent into preparation tank 1; The starter motor 9 controls the rotation of the stirring rod 11 and the stirring plate 13 through the transmission 10, so that the stirring rod 11 and the stirring plate 13 are dry mixed at 20-40 rpm for 25-50 seconds to form a homogeneous dry mixture; Connect the water delivery pipeline to the connecting pipe 20, add 164-174 parts by weight of water twice, allow the water to enter the waterway 22 through the L tube 19, and be discharged into the homogenized dry mix in layers through the drainage hole 32. When adding water for the first time, adjust the transmission 10 to drive the stirring plate 13 and the stirring rod 11 to rotate at 50-70 rpm. Stir for 40-70 seconds after the first water addition, and continue to stir for 25-50 seconds after the second water addition. The total water addition and stirring time is controlled to be 65-130 seconds to form a matrix slurry with a fluidity of ≥950mm; The water delivery pipeline is separated from the connecting pipe 20, and the high-pressure gas delivery pipeline is connected to the connecting pipe 20. At the same time, 50 parts by weight of steel fibers are added into the feeding hopper 46 in 2-3 batches. At the same time, the electric rod 23 is controlled to contract, the switch 42 is triggered and the rubber sheet 43 is inserted into the L tube 19. The vibrator 47 is started to deliver the steel fibers in the feeding hopper 46 to the connecting pipe 20, and the high-pressure gas is used to blow the steel fibers into the spiral tube 49 and pass through the rubber petal 50 to be discharged into the slurry. Each batch is separated by 10-15 seconds, and the transmission 10 is controlled to drive the stirring rod 11, the stirring plate 13 and the stirring plate 35 to stir at 30-50 rpm for 90-120 seconds.

[0044] Specifically, the particle size of the quartz sand is 0.1-0.3 mm, the fineness modulus of the machine-made sand is 2.6-3.0, and the vibration frequency of the vibrator 47 is 10-20 Hz, corresponding to a feeding rate of 1.0-1.5 kg / s.

[0045] In the actual application process of this embodiment, materials consisting of 655 kg of cement, 228 kg of silica fume, 110 kg of stone powder, 900 kg of machine-made sand, 200 kg of quartz sand, and 30 kg of water reducer are added into the preparation tank 1 according to the proportion, the motor 9 is started to control the transmission 10 to run at 30 rpm, the materials are dry mixed for 45 seconds, and the homogeneity of the materials reaches 98%. 120 kg of water is added for the first time, and the transmission 10 is controlled to run at 60 rpm to stir the materials for 55 seconds; 54 kg of water is added for the second time, and stirring is continued for 35 seconds to form a matrix slurry. The fluidity of the matrix slurry is 950 mm, and the vibration frequency of the vibrator 47 is set to 15 Hz. The steel fiber is added into the preparation tank 1 in 3 batches by using the feeding hopper 46 and the vibrator 47. The interval between each batch is 12 seconds, and the transmission 10 is adjusted to run at 30 rpm to stir the slurry for 100 seconds.

[0046] Example 2: 645 kg of cement, 223 kg of silica fume, 105 kg of stone powder, 190 kg of quartz sand and 880 kg of machine-made sand are put into the preparation tank 1, and the motor 9 is started, and the transmission 10 is adjusted to run at 30 rpm, driving the stirring plate 13 and the stirring plate 35 to dry mix for 35 seconds to form a mixture; 164 kg of water is added to the mixture twice, and 28 kg of water reducer is added, 110 kg of water is added for the first time, and the transmission 10 is adjusted to run at 45 rpm, stirring is continued for 40 seconds, and 54 kg of water is added for the second time, stirring is continued for 25 seconds to form a matrix slurry; the fluidity of the matrix slurry is 1000 mm, 50 kg of steel fiber (added in three gradients, each addition is 20 seconds apart, the transmission 10 is maintained at 30 rpm, and the total stirring time is 40-70 seconds; Example 3: 665kg of cement, 233kg of silica fume, 115kg of stone powder, 920kg of machine-made sand, and 210kg of quartz sand are put into the preparation tank 1, and the motor 9 is started, and the transmission 10 is adjusted to drive the stirring plate 13 and the stirring plate 35 at 28rmp for dry mixing for 40 seconds to form a mixture; 174kg of water and 32kg of water reducer are added to the mixture twice, 115kg of water is added for the first time, and the transmission 10 is adjusted to 50rmp, and the speed is maintained for stirring for 70 seconds, and 59kg of water is added for the second time, and stirring is continued for 50 seconds to form a matrix slurry, and the fluidity of the matrix slurry is 1050mm; 50kg of steel fiber is added to the slurry in two batches, with an interval of 15 seconds between each batch. During the addition process, the speed of the transmission 10 is kept at 25rmp, and stirring is continued for 75 seconds to form a UHPC slurry.

[0047] Working principle: the motor 9 drives the transmission 10 to drive the stirring rod 11 to rotate counterclockwise, and the stirring plate 13 stirs the material. The external water source forms a multi-layer water injection channel through the connecting pipe 20, L-tube 19, waterway 22, water pipe 30, and drainage hole 32. When the stirring plate 13 rotates, the centrifugal force discharges the water in layers from the drainage hole 32 that penetrates clockwise. The water penetrates into the dry mixture closely following the stirring trajectory, realizing the layer-by-layer penetration and mixing of water and materials to avoid local agglomeration.

[0048] The electric rod 23 contracts and triggers the switch 42, and the vibrator 47 is started to evenly discharge the steel fibers in the feeding hopper 46. The high-pressure gas passes through the connecting pipe 20, the L-tube 19, the through pipe 44, the inclined pipe 48, and the spiral tube 49, pushing the steel fibers to be ejected from the rubber flap 50 of the spiral tube 49. The spiral triangular structure of the spiral tube 49 combined with the high-pressure gas allows the steel fibers to be injected into the slurry in a three-dimensional dispersed state, solving the problem of fiber agglomeration. When the electric rod 23 contracts, the T rod 26 is separated from the socket 27, the first spring plate 29 pushes the stirring plate 13 to expand outward, and the second spring plate 34 releases the stirring plate 35. When the stirring plate 35 contacts the steel fiber, the spring plate elastically deforms to buffer the impact force, and the triangular plate 40 rotates counterclockwise to disturb the slurry, thereby realizing rigid-flexible coupling stirring and reducing the breakage rate of steel fibers. The preparation device can reduce the setting of repeated parts and electrical appliances, thereby reducing production costs.

[0049] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A UHPC preparation device, comprising: A preparation tank and an end cover fixed on the preparation tank, wherein a motor is arranged above the preparation tank, a transmission is connected to the driving end of the motor, a stirring rod is connected to the output end of the transmission, a plurality of ring seats are fixed to the outside of the stirring rod, stirring plates are symmetrically arranged on the outside of the ring seat, and the stirring plates are located on the inside of the preparation tank, characterized in that it also includes: The water-distributing part is arranged on the outside of the stirring rod and penetrates the end cover, and penetrates the stirring rod, the ring seat and the stirring plate to supply water and stir during preparation; The feeding part is arranged through the end cover and fixed on the inner wall of the preparation tank, and is connected with the water distribution part to distribute the steel fiber into the preparation tank; The fiber mixing section is arranged on the stirring plate and the ring seat and is connected to the feeding section to flexibly stir the steel fibers; The water equalizing part includes a supply connection member and a drainage member, wherein the supply connection member is arranged on the outer side of the stirring rod and passes through the end cover, and the drainage member is connected with the supply connection member and passes through the stirring rod and the stirring plate; The feeding part includes a regulating and supplying part and a uniformly discharging part, wherein the regulating and supplying part is arranged outside the supply connecting part, and the uniformly discharging part is connected with the regulating and supplying part and is arranged in the preparation tank; The fiber mixing part comprises a positioning piece and a soft mixing piece. The positioning piece is arranged outside the stirring rod and below the connecting piece. The soft mixing piece is elastically arranged on the stirring plate and the ring seat and plugged with the positioning piece.

2. The UHPC preparation device according to claim 1, characterized in that: The connecting piece comprises: The L seat is fixed above the preparation tank, is fixedly connected to the motor and the transmission, and is located outside the output end of the transmission; The rotary sleeve is fixed to a side of the L seat close to the stirring rod through a fixing component and is located at the output end of the transmission and the outer side of the stirring rod; There are four connecting rods, which are evenly fixed at one end of the stirring rod and connected to the output end of the transmission; The water supply parts are arranged through the rotary sleeve and the end cover.

3. The UHPC preparation device according to claim 2, characterized in that: The water supply parts include: A sleeve is rotatably disposed at the output end of the transmission and the outer side of the stirring rod; L tube, passing through the rotary sleeve and one side of the sleeve for fixed connection; A connecting pipe, one end of which passes through the end cover and is fixed thereto, and the other end of which passes through the end of the L-tube away from the sleeve; The arc rubber sleeve is fixedly mounted on the outside of the connecting pipe and fits with the inner wall of the end of the L-tube away from the sleeve.

4. The UHPC preparation device according to claim 3, characterized in that: The drainage member comprises: A water channel is opened through the end of the stirring rod close to the connecting rod; The water pipe is symmetrically arranged to penetrate both sides of the ring seat and is connected to the waterway; The drainage hole is arranged inside the stirring plate, and one end of the drainage hole is connected with the water pipe, and the other end of the drainage hole passes through the stirring plate in a clockwise direction.

5. The UHPC preparation device according to claim 4, characterized in that: The supply member comprises: The electric rod is fixed on the outside of the rotary sleeve and is located below the L tube; A support frame fixedly connected to the telescopic end of the electric pole; The switch is fixed at the end of the support frame away from the electric rod and is located below the L tube; The rubber plate is fixed to the end of the support frame away from the electric rod, is located on one side of the switch, and passes through the side of the L-tube close to the support frame; Supply parts, through-connecting pipes and L-tube settings.

6. The UHPC preparation device according to claim 5, characterized in that: The supply parts include: A through pipe is arranged to penetrate a side of the L-tube away from the connecting pipe and the sleeve, and is located on a side of the rubber plate away from the switch; An electric control valve is arranged at the end of the through pipe away from the L pipe; The feeding hopper is fixedly arranged through the end cover, and one end thereof is fixedly connected through one side of the connecting pipe; Vibrator, fixed on the outside of the feeding hopper.

7. The UHPC preparation device according to claim 6, characterized in that: The equalizing member comprises: A spiral tube fixed to the inner wall of the preparation tank; An inclined tube, one end of which is fixed to the end of the electric control valve away from the through pipe, and the other end is connected to one end of the spiral tube; The rubber flaps are provided in a plurality of groups, each group having two rubber flaps. The rubber flaps in each group are arranged through the spiral surface of the spiral tube close to the end cover and are evenly distributed.

8. The UHPC preparation device according to claim 7, characterized in that: The positioning member comprises: The pressure plate is movably sleeved on the outside of the stirring rod and is fixedly connected to the telescopic end of the electric rod; The guide groove is provided on the side of the pressure plate close to the ring seat; There are two jacks, which penetrate the ring seat and the stirring plate and are symmetrically opened on one side close to the end cover; There are two T-bars, one end of each of the two T-bars is movably disposed inside the guide groove, and the other end of each T-bar extends to the inside of the insertion hole; The positioning rod is fixed on the outer side of the T rod through a connecting component.

9. The UHPC preparation device according to claim 8, characterized in that: The soft mixing element comprises: The grooves are symmetrically arranged on the outer side of the ring seat; A first spring plate is arranged inside the groove, and one end of the first spring plate is fixedly connected to the ring seat, and the other end of the first spring plate is fixedly connected to one end of the stirring plate; A storage slot is provided at the other end of the stirring plate; A second spring plate is arranged on the inner side of the receiving groove, and one end of the second spring plate is fixedly connected to the stirring plate; The stirring plate is fixed to the other end of the second spring plate, is in contact with the other end of the stirring plate, and is located outside the positioning rod; The interconnection plate is symmetrically arranged on the inner side of the preparation tank and connected to the stirring plate.

10. A method for preparing UHPC, characterized in that: Applied to a UHPC preparation device as claimed in any one of claims 1 to 9, the UHPC preparation method comprises: Put 645-665 parts by weight of cement, 223-233 parts by weight of silica fume, 105-115 parts by weight of stone powder, 880-920 parts by weight of machine-made sand, 190-210 parts by weight of quartz sand, and 28-32 parts by weight of water reducing agent into a preparation tank; The starter motor controls the rotation of the stirring rod and the stirring plate through the transmission, so that the stirring rod and the stirring plate are dry mixed at 20-40 rpm for 25-50 seconds to form a homogeneous dry mixture; Connect the water delivery pipeline to the connecting pipe, add 164-174 parts by weight of water twice, allow the water to enter the waterway through the L tube, and be discharged into the homogenized dry mix in layers through the drainage holes. When adding water for the first time, adjust the transmission to drive the stirring plate and the stirring rod to rotate at 50-70 rpm. Stir for 40-70 seconds after the first water addition, continue to stir for 25-50 seconds after the second water addition, and control the total water addition and stirring time to 65-130 seconds to form a matrix slurry with a fluidity of ≥950mm; Separate the water delivery pipeline from the connecting pipe, and connect the high-pressure gas delivery pipeline to the connecting pipe. At the same time, add 50 parts by weight of steel fiber into the feeding hopper in 2-3 batches. At the same time, control the electric rod to retract, trigger the switch and insert the rubber sheet into the L-tube. Start the vibrator to transport the steel fiber in the feeding hopper to the connecting pipe, and use high-pressure gas to blow the steel fiber into the spiral tube and pass through the rubber petal to be discharged into the slurry. Each batch is separated by 10-15 seconds, and the transmission is controlled to drive the stirring rod, stirring plate and stirring plate to stir for 90-120 seconds at 30-50 rpm to form UHPC slurry.

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