Fiber concrete mixing device and mixing method

Abstract

The application discloses a fiber concrete mixing device, which comprises a mixing barrel, a feeding assembly, a water feeding assembly and a discharging assembly are communicated with the side wall of the mixing barrel respectively, a rectangular supporting assembly is arranged on the side wall of the mixing barrel and opposite to the position of the feeding assembly, two supporting frames are vertically connected to the surface of the supporting assembly close to the mixing barrel, a driving motor is mounted on the surface of one of the supporting frames, a rotating shaft is connected to the output end of the driving motor and rotatably connected to the other supporting frame after penetrating through the port of the mixing barrel, a stirring assembly is mounted on the side wall of the rotating shaft in the mixing barrel, and a control assembly is mounted on the surface of the supporting frame, and the application further discloses a fiber concrete mixing method and uses the fiber concrete mixing device, so that the problems of the existing technology, i.e. the fiber is easy to gather and not uniformly dispersed in the concrete mixing barrel, the performance of the concrete mixture is poor, and the strength of the concrete is affected, are solved.

Description

Technical Field

[0001] This invention belongs to the technical field of concrete mixing equipment, specifically relating to fiber concrete mixing equipment, and also to fiber concrete mixing methods. Background Technology

[0002] Fiber-reinforced concrete is a cement-based composite material mainly composed of cement, sand, and gravel, based on the design principles of micromechanics or mesomechanics.

[0003] The production of fiber-reinforced concrete requires a mixing device to stir various raw materials. However, existing mixing devices have a single structure and function, leading to material accumulation after addition, reduced workability of the concrete, and material adhering to the inner wall of the mixing drum, resulting in waste due to cleaning difficulties. Furthermore, because fiber-reinforced concrete contains long fibers, the fibers are not easily dispersed within the mixing drum. Additionally, the commonly used vertically positioned mixing drums may suffer from uneven mixing due to the limited rotation path of the agitator, and the limited movement trajectory of the agitator blades typically results in lower mixing speed and efficiency compared to horizontal mixers, impacting overall mixing efficiency. Therefore, there is a need to provide a mixing device and method for fiber-reinforced concrete to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a fiber-reinforced concrete mixing device that solves the problem in the prior art where fibers tend to agglomerate and disperse unevenly when added to a concrete mixing tank, resulting in poor concrete mixture performance and thus affecting concrete strength.

[0005] Another objective of this invention is to provide a fiber-reinforced concrete mixing method that solves the problem of uneven mixing caused by the single mixing blade in the prior art.

[0006] The technical solution adopted in this invention is a fiber concrete mixing device, including a mixing drum. The side wall of the mixing drum is connected to a feeding component, a water inlet component, and a discharging component. A rectangular support component is provided next to the side wall of the mixing drum, opposite to the position of the feeding component. Two support frames are vertically connected to the support component near the surface of the mixing drum. The mixing drum is located between the two support frames. A drive motor is installed on the surface of one support frame. The output end of the drive motor is connected to a rotating shaft. The rotating shaft passes through the port of the mixing drum and is rotatably connected to the other support frame. A mixing component is installed on the side wall of the rotating shaft inside the mixing drum. A control component is installed on the surface of the support frame. The control component is electrically connected to the feeding component, the drive motor, the water inlet component, and the discharging component.

[0007] The invention is further characterized by:

[0008] The feeding assembly includes a hollow fiber feeding top box that communicates with the mixing tank. Two parallel drive shafts are installed inside the fiber feeding top box. One drive shaft has one end penetrating the side wall of the fiber feeding top box and connected to the output end of a feeding motor, which is connected to the side wall of the mixing tank. The other end of the drive shaft penetrates the side wall of the fiber feeding top box and is fitted with a first synchronous pulley. One end of the other drive shaft penetrates the side wall of the fiber feeding top box and is fitted with a synchronous belt. The other end of the other drive shaft is rotatably connected to the inner wall of the fiber feeding top box. The synchronous belt and the first synchronous pulley are located on the same side of the fiber feeding top box and are connected via a second synchronous pulley. Guide plates are connected to the side walls of both drive shafts inside the fiber feeding top box. A fiber feeding hopper is connected to the side wall of the fiber feeding top box. A flange is connected to the fiber feeding hopper at the port furthest from the fiber feeding top box. The fiber feeding hopper and the mixing tank are symmetrically arranged about the fiber feeding top box.

[0009] A feed hopper is connected to the side wall of the mixing tank near the feeding assembly. The feed hopper is V-shaped and a feed valve is provided at the connection between the feed hopper and the mixing tank. A support rod is connected between the bottom of the feed hopper and the support assembly. An observation hole is provided on the side wall of the mixing tank, and the observation hole is fitted with a glass window.

[0010] The discharge assembly is positioned close to the support assembly. The discharge assembly includes a discharge port on the side wall of the mixing tank, with a movable door fitted to the discharge port. The movable door is movably connected to the side wall of the mixing tank, and a through hole is provided on its surface. The mixing tank is connected to a cylindrical first discharge tank through the through hole. A rotating groove is provided at the port of the first discharge tank away from the mixing tank, and the rotating groove is rotatably connected to one end of a conical second discharge tank. The axis of the first discharge tank is at an angle of 45° to 60° to the vertical direction of the mixing tank. A cap is fitted at the port of the second discharge tank away from the first discharge tank. The side wall of the first discharge tank is fitted with... A first rotating gear is connected to the first discharge hopper, and a second rotating gear is fitted onto the side wall of the second discharge hopper. A discharge motor is connected to the movable door near the surface of the first discharge hopper. The discharge motor is located next to the first discharge hopper, and a rotating rod is connected to the output end of the discharge motor. A third rotating gear and a fourth rotating gear are sequentially fitted onto the rotating rod away from the discharge motor. The first rotating gear meshes with the third rotating gear, and the second rotating gear meshes with the fourth rotating gear. The gear spacing of the third rotating gear and the fourth rotating gear is different. Several stirring blades are provided on the inner walls of both the first and second discharge hoppers.

[0011] The support assembly includes a base plate, the surface of which is connected to the support frame. Universal wheels are provided on both sides of the base plate away from the support frame. An extension plate is connected to the side wall of the base plate. A positioning bolt is threaded through the surface of the extension plate. A support foot is connected to one end of the positioning bolt, and a knob is connected to the other end of the positioning bolt. The mixing tank and the support frame are fixed together by bolts.

[0012] The mixing assembly includes two spiral blades in a vortex shape, sleeved on a rotating shaft. The rotation angle of the spiral blades is 40°~50°. The two spiral blades are respectively positioned near the two ends of the rotating shaft inside the mixing tank. The diameter of the two spiral blades gradually decreases in the direction away from the inner wall of the mixing tank. A hollow mixing shaft is sleeved on the rotating shaft between the two spiral blades. A scraper is connected to the side wall of the mixing shaft through two connecting rods. The two connecting rods are connected to the scraper at the ends away from the mixing shaft. A material-turning plate is connected to the side wall of the mixing shaft. The scraper and the material-turning plate are set at equal intervals. Wedge-shaped blades are connected to both connecting rods. The wedge-shaped blades are located in the space enclosed by the scraper, connecting rods and mixing shaft. The wedge-shaped blades are set at equal intervals. A shaft seat is sleeved on the rotating shaft outside the mixing tank near the outer wall of the mixing tank. The shaft seat is fixed to the support frame.

[0013] The water inlet assembly is located near the feed assembly. The water inlet assembly includes a water inlet pipe, which is Y-shaped. Two of the water inlet pipe's ports are connected to the side wall of the mixing tank, and a water inlet valve is located at the other port of the water inlet pipe.

[0014] The control components include a control box containing a chip. The control box has a switch assembly and a display on its surface. The chip is connected to the switch assembly and the display via signal lines. The chip is also electrically connected to the drive motor, the feed motor, the water inlet valve, and the discharge motor.

[0015] Another technical solution adopted in this invention is a fiber-reinforced concrete mixing method, which uses a fiber-reinforced concrete mixing device, and the specific operation steps are as follows:

[0016] Step 1: Place cement and sand for preparing fiber concrete in the feed hopper, put the fiber into the fiber feed hopper 308, turn on the drive motor, feed motor and feed valve, and mix the fiber, cement and sand in the mixing tank for no more than 0.5 minutes.

[0017] Step 2: Open the water inlet valve and add the mixture into the mixing tank through the water inlet pipe. Mix for 2.4~2.6 minutes.

[0018] Step 3: Open the cap, turn on the discharge motor, and collect the fiber concrete obtained after mixing.

[0019] The mixing and stirring rate in step 1 is 20~50 r / min, and the mixing and stirring rate in step 2 is 20~50 r / min. The mixture is a solution obtained by mixing water and additives.

[0020] The beneficial effects of this invention are:

[0021] The fiber concrete mixing device is equipped with a feeding component to ensure that the material is evenly dispersed in the mixing drum during the feeding process and does not clump. The mixing drum is equipped with a mixing component to mix the material added to the mixing drum to obtain fiber concrete. The support component is set up to facilitate movement and fixation. The discharge component is set up to facilitate the collection of concrete after mixing. The control component is set up to realize the speed control of mixing, feeding and discharging throughout the entire mixing process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the fiber concrete mixing device of the present invention;

[0023] Figure 2 This is a schematic diagram of the mixing component in the fiber concrete mixing device of the present invention;

[0024] Figure 3 This is a schematic diagram of the feeding assembly in the fiber concrete mixing device of the present invention;

[0025] Figure 4 This is a schematic diagram of the glass window and feed hopper in the fiber concrete mixing device of the present invention;

[0026] Figure 5 This is a schematic diagram of the discharge component in the fiber concrete mixing device of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the first discharge bucket in the fiber concrete mixing device of the present invention;

[0028] Figure 7 This is a schematic diagram of the support component in the fiber concrete mixing device of the present invention.

[0029] In the diagram, 1. Support assembly, 101. Base plate, 102. Caster wheel, 103. Outer plate, 104. Positioning bolt, 105. Support foot, 106. Knob, 2. Mixing tank, 3. Feeding assembly, 301. Fiber feeding top box, 302. Drive shaft, 303. Feeding motor, 304. First synchronous pulley, 305. Synchronous belt, 306. Second synchronous pulley, 307. Guide plate, 308. Fiber feeding tank, 309. Feed hopper, 3010. Feed valve, 3011. Support rod, 3012. Flange, 4. Support frame, 5. Drive motor, 6. Rotating shaft, 7. Mixing assembly, 701. Spiral blade, 702. Mixing shaft, 703. Scraper, 704. Tilting plate, 7 05. Connecting rod, 706. Wedge blade, 707. Shaft seat, 8. Discharge assembly, 801. Discharge port, 802. Through hole, 803. Movable door, 804. First discharge bucket, 805. Rotating groove, 806. Second discharge bucket, 807. First rotating gear, 808. Second rotating gear, 809. Discharge motor, 8010. Rotating rod, 8011. Third rotating gear, 8012. Fourth rotating gear, 8013. Cap, 8014. Stirring blade, 9. Control assembly, 901. Control box, 902. Chip, 903. Switch group, 904. Display, 10. Observation hole, 11. Glass window, 12. Water inlet assembly, 13. Water inlet pipe, 14. Water inlet valve. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0031] Fiberglass concrete mixing equipment, such as Figure 1 As shown, the device includes a mixing tank 2. The side walls of the mixing tank 2 are respectively connected to a feeding assembly 3, a water inlet assembly 12, and a discharging assembly 8. A rectangular support assembly 1 is provided next to the side wall of the mixing tank 2, opposite to the position of the feeding assembly 3. Two support frames 4 are vertically connected to the support assembly 1 near the surface of the mixing tank 2. The mixing tank 2 is located between the two support frames 4. A drive motor 5 is installed on the surface of one of the support frames 4. The output end of the drive motor 5 is connected to a rotating shaft 6. The rotating shaft 6 passes through the port of the mixing tank 2 and is rotatably connected to the other support frame 4. A mixing assembly 7 is installed on the side wall of the rotating shaft 6 located inside the mixing tank 2. A control assembly 9 is installed on the surface of the support frame 4. The control assembly 9 is electrically connected to the feeding assembly 3, the drive motor 5, the water inlet assembly 12, and the discharging assembly 8.

[0032] The feeding assembly 3 includes a hollow fiber feeding top box 301 connected to the mixing tank 2. Two parallel drive shafts 302 are installed inside the fiber feeding top box 301. One end of one drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is connected to the output end of a feeding motor 303, which is connected to the side wall of the mixing tank 2. The other end of the drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is fitted with a first synchronous pulley 304. One end of the other drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is fitted with a synchronous belt 3. 05. The other end of the other drive shaft 302 is rotatably connected to the inner wall of the fiber feeding top box 301. The synchronous belt 305 and the first synchronous pulley 304 are located on the same side of the fiber feeding top box 301. The synchronous belt 305 and the first synchronous pulley 304 are connected by a second synchronous pulley 306. Guide plates 307 are connected to the side walls of the two drive shafts 302 located inside the fiber feeding top box 301. The side wall of the fiber feeding top box 301 is connected to a fiber feeding hopper 308. A flange 3012 is connected to the fiber feeding hopper 308 away from the port of the fiber feeding top box 301. Figure 3 As shown; the fiber feed tank 308 and the mixing tank 2 are symmetrically arranged about the fiber feed top box 301.

[0033] A feed hopper 309 is connected to the side wall of the mixing tank 2 near the feeding assembly 3. The feed hopper 309 is V-shaped, and a feed valve 3010 is provided at the connection between the feed hopper 309 and the mixing tank 2. A support rod 3011 is connected between the bottom of the feed hopper 309 and the support assembly 1. An observation hole 10 is provided on the side wall of the mixing tank 2, and the observation hole 10 is fitted with a glass window 11, such as... Figure 3 , Figure 4 and Figure 7 As shown.

[0034] like Figure 5 and Figure 6As shown, the discharge assembly 8 is located near the support assembly 1. The discharge assembly 8 includes a discharge port 801 opened on the side wall of the mixing tank 2. The discharge port 801 is fitted with a movable door 803, which is movably connected to the side wall of the mixing tank 2. The surface of the movable door 803 is provided with a through hole 802. The mixing tank 2 is connected to a cylindrical first discharge tank 804 through the through hole 802. A rotating groove 805 is opened at the port of the first discharge tank 804 away from the mixing tank 2. The rotating groove 805 is rotatably connected to one end of a conical second discharge tank 806. The axis of the first discharge tank 804 is at an angle of 45° to 60° with the vertical direction of the mixing tank 2. A cap 8013 is fitted at the port of the second discharge tank 806 away from the first discharge tank 804. A first rotating tooth is sleeved on the side wall of the first discharge tank 804. A second rotating gear 808 is sleeved on the side wall of the first discharge barrel 806, and a discharge motor 809 is connected to the movable door 803 near the surface of the first discharge barrel 804. The discharge motor 809 is located next to the first discharge barrel 804, and a rotating rod 8010 is connected to the output end of the discharge motor 809. A third rotating gear 8011 and a fourth rotating gear 8012 are sequentially sleeved on the rotating rod 8010 away from the discharge motor 809. The first rotating gear 807 meshes with the third rotating gear 8011, and the second rotating gear 808 meshes with the fourth rotating gear 8012. The gear spacing of the third rotating gear 8011 and the fourth rotating gear 8012 is different. Several stirring blades 8014 are provided on the inner walls of both the first discharge barrel 804 and the second discharge barrel 806.

[0035] Support assembly 1 includes a base plate 101, the surface of which is connected to the support frame 4. Casters 102 are provided on both sides of the base plate 101 away from the support frame 4. An extension plate 103 is connected to the side wall of the base plate 101. A positioning bolt 104 is threaded through the surface of the extension plate 103. One end of the positioning bolt 104 is connected to a support foot 105, and the other end is connected to a knob 106. Figure 7 As shown; the mixing tank 2 and the support frame 4 are fixed together by bolts.

[0036] like Figure 2As shown, the stirring assembly 7 includes two spiral blades 701 sleeved on the rotating shaft 6 in a vortex shape. The rotation angle of the spiral blades 701 is 40°~50°. The two spiral blades 701 are respectively positioned close to both ends of the rotating shaft 6 inside the stirring tank 2. The diameters of the two spiral blades 701 gradually decrease in the direction away from the inner wall of the stirring tank 2. A hollow stirring shaft 702 is sleeved on the rotating shaft 6 between the two spiral blades 701. The side wall of the stirring shaft 702 is connected to a scraper 703 via two connecting rods 705. 05 is connected to the scraper 703 at the port away from the stirring shaft 702. The side wall of the stirring shaft 702 is connected to the turning plate 704. The scraper 703 and the turning plate 704 are equally spaced. Both connecting rods 705 are connected to wedge blades 706. The wedge blades 706 are located in the space enclosed by the scraper 703, the connecting rods 705 and the stirring shaft 702. The wedge blades 706 are equally spaced. The rotating shaft 6 located outside the mixing tank 2 is fitted with a shaft seat 707 near the outer wall of the mixing tank 2. The shaft seat 707 is fixed to the support frame 4.

[0037] The water inlet assembly 12 is located near the feed assembly 3. The water inlet assembly 12 includes a water inlet pipe 13, which is Y-shaped. Two ports of the water inlet pipe 13 are connected to the side wall of the mixing tank 2, and a water inlet valve 14 is located at the other port of the water inlet pipe 13. Figure 4 As shown.

[0038] like Figure 7 As shown, the control component 9 includes a control box 901, a chip 902 is provided inside the control box 901, a switch group 903 and a display 904 are provided on the surface of the control box 901, the chip 902 is connected to the switch group 903 and the display 904 through signal lines, and the chip 902 is electrically connected to the drive motor 5, the feed motor 303, the water inlet valve 14 and the discharge motor 809.

[0039] Another technical solution adopted in this invention is a fiber-reinforced concrete mixing method, which uses a fiber-reinforced concrete mixing device, and the specific operation steps are as follows:

[0040] Step 1: Place cement and sand for preparing fiber concrete in the feed hopper 309, put the fiber into the fiber feed hopper 308, turn on the drive motor 5, the feed motor 303 and the feed valve 3010, and mix the fiber, cement and sand in the mixing tank 2 for no more than 0.5 minutes.

[0041] Step 2: Add the mixture into the mixing tank 2 through the water inlet pipe 13 and stir for 2.4~2.6 minutes;

[0042] Step 3: Open the cap 8013, turn on the discharge motor 809, and collect the fiber concrete obtained after mixing.

[0043] The mixing and stirring rate in step 1 is 20~50 r / min, and the mixing and stirring rate in step 2 is 20~50 r / min. The mixture is a solution obtained by mixing water and additives.

[0044] Among them, admixtures mainly include water-reducing agents and air-entraining agents, and corrosion inhibitors, quick-setting agents or retarders can be added according to actual needs to increase the performance of concrete.

[0045] Each drive shaft 302 is equipped with a guide plate 307, which rotates under the action of the feeding motor 303 to ensure that the raw materials placed in the mixing tank 2 enter the mixing tank 2 smoothly and do not clump in the fiber feeding tank 308. The first synchronous pulley 304 and the second synchronous pulley 306 rotate together and are connected to the synchronous belt 305. One end of one of the drive shafts 302 is connected to the feeding motor 303, but under the drive of the synchronous belt 305, the two parallel drive shafts 302 will rotate synchronously. The raw materials can be weighed and placed into the feeding hopper 309 for easy addition into the fiber feeding tank 308. The glass window 11 allows real-time observation of the mixing situation in the mixing tank 2. The discharge port 801 and the movable door 803 work together to allow the mixing tank 2 to be cleaned by opening the movable door 803 when cleaning is required.

[0046] The first rotating gear 807 meshes with the third rotating gear 8011, and the second rotating gear 808 meshes with the fourth rotating gear 8012. The discharge motor 809 rotates, driving the third rotating gear 8011 and the fourth rotating gear 8012 to rotate. The inner walls of the first discharge barrel 804 and the second discharge barrel 806 are both equipped with stirring blades 8014. When the stirring blades 8014 are fish-scale shaped and at an angle of 45° to 60° to the inner walls of the first discharge barrel 804 and the second discharge barrel 806, the discharge effect is better. During discharge, the mixed fiber concrete can be stirred again, which achieves uniform discharge and prevents the fiber concrete from sticking to the inner wall of the discharge barrel. The gear intervals of the third rotating gear 8011 and the fourth rotating gear 8012 are different, which can realize the rotation speed of the first discharge barrel 804 and the second discharge barrel 806.

[0047] The casters 102 facilitate the movement of the mixing device; the knob 106 adjusts the height of the outer plate 103 to accommodate base plates 101 of different heights; the support feet 105 provide support for the base plate 101, ensuring the stability of the mixing device during mixing; there are two spiral blades 701 with opposite directions of rotation. This arrangement ensures that the raw materials gather in the middle of the mixing tank 2 during mixing. The spiral blades 701 are spiral-shaped and rotate in the direction of the vortex; the rotation angle of the spiral blades 701 is 40°~50°, with 45° being optimal. The two spiral blades 701 are arranged in opposite directions of rotation, and their rotation diameter gradually decreases in the direction away from the inner wall of the mixing tank 2, ensuring that the raw materials and fibers are concentrated in the middle of the mixing tank 2 during the mixing process. The tilting plate 704 and the wedge blades 706 play a stirring role, making the mixing more uniform. The scraper 703 scrapes the raw materials attached to the inner wall of the mixing tank 2 and continues to stir. The tilting plate 704 is set to stir the raw materials gathered in the middle, enhancing the stirring effect. The wedge blades 706 are set to stir the raw materials scraped down by the scraper 703. The setting of the shaft seat 707 ensures the stability of the rotating shaft 6 during rotation.

[0048] A 2-5mm gap exists between the scraper 703 and the inner wall of the mixing tank 2. This prevents direct contact between the scraper 703 and the inner wall of the mixing tank 2 during mixing and also prevents materials from getting stuck in the gap, ensuring easy cleaning. In step 1 of the fiber-reinforced concrete mixing method, the mixing speed can vary. In the initial stage, the mixing speed is relatively low to ensure uniform mixing of materials; in subsequent stages, the speed is increased to ensure more thorough mixing. Many types of fibers are added to fiber-reinforced concrete, including glass fiber, polyvinyl alcohol fiber, and polypropylene fiber. The mixing speed can be adjusted according to different material requirements and observation through the glass window 11 to ensure uniform distribution of fibers and aggregates, avoiding stratification or fiber breakage due to improper mixing speed. The second discharge tank 806 and the first discharge tank 804 have an angle of 45° to 60° with the vertical direction of the mixing tank 2. A 50° angle provides the best discharge effect, ensuring smooth discharge after mixing. There are at least two support rods 3011, and the support rods 3011 are arranged opposite each other to ensure that the force supporting the feed hopper 309 is uniform. The flange 3012 is used to connect to the external fiber pneumatic conveying equipment.

[0049] Example 1

[0050] A fiber-reinforced concrete mixing device includes a mixing tank 2. A feeding assembly 3, a water inlet assembly 12, and a discharge assembly 8 are respectively connected to the side wall of the mixing tank 2. A rectangular support assembly 1 is provided next to the side wall of the mixing tank 2, opposite to the position of the feeding assembly 3. Two support frames 4 are vertically connected to the support assembly 1 near the surface of the mixing tank 2. The mixing tank 2 is located between the two support frames 4. A drive motor 5 is installed on the surface of one of the support frames 4. The output end of the drive motor 5 is connected to a rotating shaft 6. The rotating shaft 6 passes through the port of the mixing tank 2 and is rotatably connected to the other support frame 4. A mixing assembly 7 is installed on the side wall of the rotating shaft 6 located inside the mixing tank 2. A control assembly 9 is installed on the surface of the support frame 4. The control assembly 9 is electrically connected to the feeding assembly 3, the drive motor 5, the water inlet assembly 12, and the discharge assembly 8.

[0051] Example 2

[0052] A fiber-reinforced concrete mixing device includes a mixing tank 2. A feeding assembly 3, a water inlet assembly 12, and a discharge assembly 8 are respectively connected to the side wall of the mixing tank 2. A rectangular support assembly 1 is provided next to the side wall of the mixing tank 2, opposite to the position of the feeding assembly 3. Two support frames 4 are vertically connected to the support assembly 1 near the surface of the mixing tank 2. The mixing tank 2 is located between the two support frames 4. A drive motor 5 is installed on the surface of one of the support frames 4. The output end of the drive motor 5 is connected to a rotating shaft 6. The rotating shaft 6 passes through the port of the mixing tank 2 and is rotatably connected to the other support frame 4. A mixing assembly 7 is installed on the side wall of the rotating shaft 6 located inside the mixing tank 2. A control assembly 9 is installed on the surface of the support frame 4. The control assembly 9 is electrically connected to the feeding assembly 3, the drive motor 5, the water inlet assembly 12, and the discharge assembly 8.

[0053] The feeding assembly 3 includes a hollow fiber feeding top box 301 connected to the mixing tank 2. Two parallel drive shafts 302 are installed inside the fiber feeding top box 301. One end of one drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is connected to the output end of a feeding motor 303, which is connected to the side wall of the mixing tank 2. The other end of the drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is fitted with a first synchronous pulley 304. One end of the other drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is fitted with a synchronous belt 305. The other drive shaft 302... The end is rotatably connected to the inner wall of the fiber feeding top box 301. The synchronous belt 305 and the first synchronous pulley 304 are located on the same side of the fiber feeding top box 301. The synchronous belt 305 and the first synchronous pulley 304 are connected by transmission through the second synchronous pulley 306. The two transmission shafts 302 located inside the fiber feeding top box 301 are connected to the side walls with guide plates 307. The fiber feeding top box 301 is connected to the side wall with a fiber feeding barrel 308. The fiber feeding barrel 308 is connected to a flange 3012 at the port away from the fiber feeding top box 301. The fiber feeding barrel 308 and the mixing tank 2 are symmetrically arranged about the fiber feeding top box 301.

[0054] Example 3

[0055] A fiber-reinforced concrete mixing device includes a mixing tank 2. A feeding assembly 3, a water inlet assembly 12, and a discharge assembly 8 are respectively connected to the side wall of the mixing tank 2. A rectangular support assembly 1 is provided next to the side wall of the mixing tank 2, opposite to the position of the feeding assembly 3. Two support frames 4 are vertically connected to the support assembly 1 near the surface of the mixing tank 2. The mixing tank 2 is located between the two support frames 4. A drive motor 5 is installed on the surface of one of the support frames 4. The output end of the drive motor 5 is connected to a rotating shaft 6. The rotating shaft 6 passes through the port of the mixing tank 2 and is rotatably connected to the other support frame 4. A mixing assembly 7 is installed on the side wall of the rotating shaft 6 located inside the mixing tank 2. A control assembly 9 is installed on the surface of the support frame 4. The control assembly 9 is electrically connected to the feeding assembly 3, the drive motor 5, the water inlet assembly 12, and the discharge assembly 8.

[0056] The feeding assembly 3 includes a hollow fiber feeding top box 301 connected to the mixing tank 2. Two parallel drive shafts 302 are installed inside the fiber feeding top box 301. One end of one drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is connected to the output end of a feeding motor 303, which is connected to the side wall of the mixing tank 2. The other end of the drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is fitted with a first synchronous pulley 304. One end of the other drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is fitted with a synchronous belt 305. The other drive shaft 302... The end is rotatably connected to the inner wall of the fiber feeding top box 301. The synchronous belt 305 and the first synchronous pulley 304 are located on the same side of the fiber feeding top box 301. The synchronous belt 305 and the first synchronous pulley 304 are connected by transmission through the second synchronous pulley 306. The two transmission shafts 302 located inside the fiber feeding top box 301 are connected to the side walls with guide plates 307. The fiber feeding top box 301 is connected to the side wall with a fiber feeding barrel 308. The fiber feeding barrel 308 is connected to a flange 3012 at the port away from the fiber feeding top box 301. The fiber feeding barrel 308 and the mixing tank 2 are symmetrically arranged about the fiber feeding top box 301.

[0057] A feeding hopper 309 is connected to the side wall of the mixing tank 2 near the feeding component 3. The feeding hopper 309 is V-shaped. A feeding valve 3010 is provided at the connection between the feeding hopper 309 and the mixing tank 2. A support rod 3011 is connected between the bottom of the feeding hopper 309 and the support component 1. An observation hole 10 is provided on the side wall of the mixing tank 2. The observation hole 10 is fitted with a glass window 11.

[0058] Example 4

[0059] A fiber-reinforced concrete mixing device includes a mixing tank 2. A feeding assembly 3, a water inlet assembly 12, and a discharge assembly 8 are respectively connected to the side wall of the mixing tank 2. A rectangular support assembly 1 is provided next to the side wall of the mixing tank 2, opposite to the position of the feeding assembly 3. Two support frames 4 are vertically connected to the support assembly 1 near the surface of the mixing tank 2. The mixing tank 2 is located between the two support frames 4. A drive motor 5 is installed on the surface of one of the support frames 4. The output end of the drive motor 5 is connected to a rotating shaft 6. The rotating shaft 6 passes through the port of the mixing tank 2 and is rotatably connected to the other support frame 4. A mixing assembly 7 is installed on the side wall of the rotating shaft 6 located inside the mixing tank 2. A control assembly 9 is installed on the surface of the support frame 4. The control assembly 9 is electrically connected to the feeding assembly 3, the drive motor 5, the water inlet assembly 12, and the discharge assembly 8.

[0060] The feeding assembly 3 includes a hollow fiber feeding top box 301 connected to the mixing tank 2. Two parallel drive shafts 302 are installed inside the fiber feeding top box 301. One end of one drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is connected to the output end of a feeding motor 303, which is connected to the side wall of the mixing tank 2. The other end of the drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is fitted with a first synchronous pulley 304. One end of the other drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is fitted with a synchronous belt 305. The other drive shaft 302... The end is rotatably connected to the inner wall of the fiber feeding top box 301. The synchronous belt 305 and the first synchronous pulley 304 are located on the same side of the fiber feeding top box 301. The synchronous belt 305 and the first synchronous pulley 304 are connected by transmission through the second synchronous pulley 306. The two transmission shafts 302 located inside the fiber feeding top box 301 are connected to the side walls with guide plates 307. The fiber feeding top box 301 is connected to the side wall with a fiber feeding barrel 308. The fiber feeding barrel 308 is connected to a flange 3012 at the port away from the fiber feeding top box 301. The fiber feeding barrel 308 and the mixing tank 2 are symmetrically arranged about the fiber feeding top box 301.

[0061] A feeding hopper 309 is connected to the side wall of the mixing tank 2 near the feeding component 3. The feeding hopper 309 is V-shaped. A feeding valve 3010 is provided at the connection between the feeding hopper 309 and the mixing tank 2. A support rod 3011 is connected between the bottom of the feeding hopper 309 and the support component 1. An observation hole 10 is provided on the side wall of the mixing tank 2. The observation hole 10 is fitted with a glass window 11.

[0062] The discharge assembly 8 is located near the support assembly 1. The discharge assembly 8 includes a discharge port 801 formed on the side wall of the mixing tank 2. The discharge port 801 is fitted with a movable door 803, which is movably connected to the side wall of the mixing tank 2. The movable door 803 has a through hole 802 on its surface. The mixing tank 2 is connected to a cylindrical first discharge tank 804 through the through hole 802. A rotating groove 805 is formed at the port of the first discharge tank 804 away from the mixing tank 2. The rotating groove 805 is rotatably connected to one end of a conical second discharge tank 806. The axis of the first discharge tank 804 is at a 45° angle to the vertical direction of the mixing tank 2. A cap 8013 is fitted at the port of the second discharge tank 806 away from the first discharge tank 804. A first rotating gear 807 is sleeved on the side wall of the first discharge tank 804. A second rotating gear 808 is sleeved on the side wall of the second discharge hopper 806. A discharge motor 809 is connected to the movable door 803 near the surface of the first discharge hopper 804. The discharge motor 809 is located next to the first discharge hopper 804. A rotating rod 8010 is connected to the output end of the discharge motor 809. A third rotating gear 8011 and a fourth rotating gear 8012 are sequentially sleeved on the rotating rod 8010 away from the discharge motor 809. The first rotating gear 807 meshes with the third rotating gear 8011, and the second rotating gear 808 meshes with the fourth rotating gear 8012. The gear spacing of the third rotating gear 8011 and the fourth rotating gear 8012 is different. Several stirring blades 8014 are provided on the inner walls of both the first discharge hopper 804 and the second discharge hopper 806.

[0063] The stirring assembly 7 includes two spiral blades 701 sleeved on a rotating shaft 6, each spiral blade 701 rotating at a 40° angle. The two spiral blades 701 are positioned near the two ends of the rotating shaft 6 inside the stirring tank 2. The diameters of the two spiral blades 701 gradually decrease away from the inner wall of the stirring tank 2. A hollow stirring shaft 702 is sleeved on the rotating shaft 6 between the two spiral blades 701. Scrapers 703 are connected to the side wall of the stirring shaft 702 via two connecting rods 705. The stirring shaft 702 is connected to the scraper 703 at its end. The stirring shaft 702 is connected to the side wall of the material turning plate 704. The scraper 703 and the material turning plate 704 are equally spaced. Both connecting rods 705 are connected to wedge blades 706. The wedge blades 706 are located in the space enclosed by the scraper 703, the connecting rods 705 and the stirring shaft 702. The wedge blades 706 are equally spaced. The rotating shaft 6 located outside the mixing tank 2 is fitted with a shaft seat 707 near the outer wall of the mixing tank 2. The shaft seat 707 is fixed to the support frame 4.

[0064] The method for mixing fiber-reinforced concrete, using a fiber-reinforced concrete mixing device, involves the following specific operating steps:

[0065] Step 1: Place cement and sand for preparing fiber concrete in the feed hopper 309, put the fiber into the fiber feed bucket 308, turn on the drive motor 5, the feed motor 303 and the feed valve 3010, and mix the fiber, cement and sand in the mixing bucket 2 for no more than 0.25 minutes.

[0066] Step 2: Add the mixture into the mixing tank 2 through the water inlet pipe 13 and stir for 2.4~2.6 minutes;

[0067] Step 3: Open the cap 8013, turn on the discharge motor 809, and collect the fiber concrete obtained after mixing.

[0068] The mixing speed in step 1 is 20 r / min, and the mixing speed in step 2 is 50 r / min. The mixture is a solution of water and additives, which are a mixture of water-reducing agent and air-entraining agent.

[0069] Example 5

[0070] A fiber-reinforced concrete mixing device includes a mixing tank 2. A feeding assembly 3, a water inlet assembly 12, and a discharge assembly 8 are respectively connected to the side wall of the mixing tank 2. A rectangular support assembly 1 is provided next to the side wall of the mixing tank 2, opposite to the position of the feeding assembly 3. Two support frames 4 are vertically connected to the support assembly 1 near the surface of the mixing tank 2. The mixing tank 2 is located between the two support frames 4. A drive motor 5 is installed on the surface of one of the support frames 4. The output end of the drive motor 5 is connected to a rotating shaft 6. The rotating shaft 6 passes through the port of the mixing tank 2 and is rotatably connected to the other support frame 4. A mixing assembly 7 is installed on the side wall of the rotating shaft 6 located inside the mixing tank 2. A control assembly 9 is installed on the surface of the support frame 4. The control assembly 9 is electrically connected to the feeding assembly 3, the drive motor 5, the water inlet assembly 12, and the discharge assembly 8.

[0071] The feeding assembly 3 includes a hollow fiber feeding top box 301 connected to the mixing tank 2. Two parallel drive shafts 302 are installed inside the fiber feeding top box 301. One end of one drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is connected to the output end of a feeding motor 303, which is connected to the side wall of the mixing tank 2. The other end of the drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is fitted with a first synchronous pulley 304. One end of the other drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is fitted with a synchronous belt 305. The other drive shaft 302... The end is rotatably connected to the inner wall of the fiber feeding top box 301. The synchronous belt 305 and the first synchronous pulley 304 are located on the same side of the fiber feeding top box 301. The synchronous belt 305 and the first synchronous pulley 304 are connected by transmission through the second synchronous pulley 306. The two transmission shafts 302 located inside the fiber feeding top box 301 are connected to the side walls with guide plates 307. The fiber feeding top box 301 is connected to the side wall with a fiber feeding barrel 308. The fiber feeding barrel 308 is connected to a flange 3012 at the port away from the fiber feeding top box 301. The fiber feeding barrel 308 and the mixing tank 2 are symmetrically arranged about the fiber feeding top box 301.

[0072] A feeding hopper 309 is connected to the side wall of the mixing tank 2 near the feeding component 3. The feeding hopper 309 is V-shaped. A feeding valve 3010 is provided at the connection between the feeding hopper 309 and the mixing tank 2. A support rod 3011 is connected between the bottom of the feeding hopper 309 and the support component 1. An observation hole 10 is provided on the side wall of the mixing tank 2. The observation hole 10 is fitted with a glass window 11.

[0073] The discharge assembly 8 is located near the support assembly 1. The discharge assembly 8 includes a discharge port 801 formed on the side wall of the mixing tank 2. The discharge port 801 is fitted with a movable door 803, which is movably connected to the side wall of the mixing tank 2. The movable door 803 has a through hole 802 on its surface. The mixing tank 2 is connected to a cylindrical first discharge tank 804 through the through hole 802. A rotating groove 805 is formed at the end of the first discharge tank 804 away from the end of the mixing tank 2. The rotating groove 805 is rotatably connected to one end of a conical second discharge tank 806. The axis of the first discharge tank 804 is at a 50° angle to the vertical direction of the mixing tank 2. A cap 8013 is fitted at the end of the second discharge tank 806 away from the end of the first discharge tank 804. A first rotating gear 807 is sleeved on the side wall of the first discharge tank 804. A second rotating gear 808 is sleeved on the side wall of the second discharge hopper 806. A discharge motor 809 is connected to the movable door 803 near the surface of the first discharge hopper 804. The discharge motor 809 is located next to the first discharge hopper 804. A rotating rod 8010 is connected to the output end of the discharge motor 809. A third rotating gear 8011 and a fourth rotating gear 8012 are sequentially sleeved on the rotating rod 8010 away from the discharge motor 809. The first rotating gear 807 meshes with the third rotating gear 8011, and the second rotating gear 808 meshes with the fourth rotating gear 8012. The gear spacing of the third rotating gear 8011 and the fourth rotating gear 8012 is different. Several stirring blades 8014 are provided on the inner walls of both the first discharge hopper 804 and the second discharge hopper 806.

[0074] The stirring assembly 7 includes two spiral blades 701 sleeved on a rotating shaft 6, each spiral blade 701 rotating at an angle of 50°. The two spiral blades 701 are positioned near the two ends of the rotating shaft 6 inside the stirring tank 2. The diameters of the two spiral blades 701 gradually decrease away from the inner wall of the stirring tank 2. A hollow stirring shaft 702 is sleeved on the rotating shaft 6 between the two spiral blades 701. Scrapers 703 are connected to the side wall of the stirring shaft 702 via two connecting rods 705. The stirring shaft 702 is connected to the scraper 703 at its end. The stirring shaft 702 is connected to the side wall of the material turning plate 704. The scraper 703 and the material turning plate 704 are equally spaced. Both connecting rods 705 are connected to wedge blades 706. The wedge blades 706 are located in the space enclosed by the scraper 703, the connecting rods 705 and the stirring shaft 702. The wedge blades 706 are equally spaced. The rotating shaft 6 located outside the mixing tank 2 is fitted with a shaft seat 707 near the outer wall of the mixing tank 2. The shaft seat 707 is fixed to the support frame 4.

[0075] The method for mixing fiber-reinforced concrete, using a fiber-reinforced concrete mixing device, involves the following specific operating steps:

[0076] Step 1: Place cement and sand for preparing fiber concrete in the feed hopper 309, put the fiber into the fiber feed hopper 308, turn on the drive motor 5, the feed motor 303 and the feed valve 3010, and mix the fiber, cement and sand in the mixing tank 2 for 5 minutes.

[0077] Step 2: Add the mixture into the mixing tank 2 through the water inlet pipe 13 and stir for 2.4~2.6 minutes;

[0078] Step 3: Open the cap 8013, turn on the discharge motor 809, and collect the fiber concrete obtained after mixing.

[0079] The mixing speed in step 1 is 50 r / min, and the mixing speed in step 2 is 20 r / min. The mixture is a solution of water and additives. The additives are a mixture of water-reducing agent, air-entraining agent, preservative and quick-setting agent.

[0080] Example 6

[0081] A fiber-reinforced concrete mixing device includes a mixing tank 2. A feeding assembly 3, a water inlet assembly 12, and a discharge assembly 8 are respectively connected to the side wall of the mixing tank 2. A rectangular support assembly 1 is provided next to the side wall of the mixing tank 2, opposite to the position of the feeding assembly 3. Two support frames 4 are vertically connected to the support assembly 1 near the surface of the mixing tank 2. The mixing tank 2 is located between the two support frames 4. A drive motor 5 is installed on the surface of one of the support frames 4. The output end of the drive motor 5 is connected to a rotating shaft 6. The rotating shaft 6 passes through the port of the mixing tank 2 and is rotatably connected to the other support frame 4. A mixing assembly 7 is installed on the side wall of the rotating shaft 6 located inside the mixing tank 2. A control assembly 9 is installed on the surface of the support frame 4. The control assembly 9 is electrically connected to the feeding assembly 3, the drive motor 5, the water inlet assembly 12, and the discharge assembly 8.

[0082] The feeding assembly 3 includes a hollow fiber feeding top box 301 connected to the mixing tank 2. Two parallel drive shafts 302 are installed inside the fiber feeding top box 301. One end of one drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is connected to the output end of a feeding motor 303, which is connected to the side wall of the mixing tank 2. The other end of the drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is fitted with a first synchronous pulley 304. One end of the other drive shaft 302 passes through the side wall of the fiber feeding top box 301 and is fitted with a synchronous belt 305. The other drive shaft 302... The end is rotatably connected to the inner wall of the fiber feeding top box 301. The synchronous belt 305 and the first synchronous pulley 304 are located on the same side of the fiber feeding top box 301. The synchronous belt 305 and the first synchronous pulley 304 are connected by transmission through the second synchronous pulley 306. The two transmission shafts 302 located inside the fiber feeding top box 301 are connected to the side walls with guide plates 307. The fiber feeding top box 301 is connected to the side wall with a fiber feeding barrel 308. The fiber feeding barrel 308 is connected to a flange 3012 at the port away from the fiber feeding top box 301. The fiber feeding barrel 308 and the mixing tank 2 are symmetrically arranged about the fiber feeding top box 301.

[0083] A feeding hopper 309 is connected to the side wall of the mixing tank 2 near the feeding component 3. The feeding hopper 309 is V-shaped. A feeding valve 3010 is provided at the connection between the feeding hopper 309 and the mixing tank 2. A support rod 3011 is connected between the bottom of the feeding hopper 309 and the support component 1. An observation hole 10 is provided on the side wall of the mixing tank 2. The observation hole 10 is fitted with a glass window 11.

[0084] The discharge assembly 8 is located near the support assembly 1. The discharge assembly 8 includes a discharge port 801 formed on the side wall of the mixing tank 2. The discharge port 801 is fitted with a movable door 803, which is movably connected to the side wall of the mixing tank 2. The movable door 803 has a through hole 802 on its surface. The mixing tank 2 is connected to a cylindrical first discharge tank 804 through the through hole 802. A rotating groove 805 is formed at the port of the first discharge tank 804 away from the mixing tank 2. The rotating groove 805 is rotatably connected to one end of a conical second discharge tank 806. The axis of the first discharge tank 804 is at a 60° angle to the vertical direction of the mixing tank 2. A cap 8013 is fitted at the port of the second discharge tank 806 away from the first discharge tank 804. A first rotating gear 807 is sleeved on the side wall of the first discharge tank 804. A second rotating gear 808 is sleeved on the side wall of the second discharge hopper 806. A discharge motor 809 is connected to the movable door 803 near the surface of the first discharge hopper 804. The discharge motor 809 is located next to the first discharge hopper 804. A rotating rod 8010 is connected to the output end of the discharge motor 809. A third rotating gear 8011 and a fourth rotating gear 8012 are sequentially sleeved on the rotating rod 8010 away from the discharge motor 809. The first rotating gear 807 meshes with the third rotating gear 8011, and the second rotating gear 808 meshes with the fourth rotating gear 8012. The gear spacing of the third rotating gear 8011 and the fourth rotating gear 8012 is different. Several stirring blades 8014 are provided on the inner walls of both the first discharge hopper 804 and the second discharge hopper 806.

[0085] The stirring assembly 7 includes two spiral blades 701 sleeved on a rotating shaft 6 in a vortex shape. The rotation angle of the spiral blades 701 is 45°. The two spiral blades 701 are respectively positioned close to both ends of the rotating shaft 6 inside the stirring tank 2. The diameters of the two spiral blades 701 gradually decrease away from the inner wall of the stirring tank 2. A hollow stirring shaft 702 is sleeved on the rotating shaft 6 between the two spiral blades 701. The side wall of the stirring shaft 702 is connected to a scraper 703 via two connecting rods 705. The stirring shaft 702 is connected to the scraper 703 at its end. The stirring shaft 702 is connected to the side wall of the material turning plate 704. The scraper 703 and the material turning plate 704 are equally spaced. Both connecting rods 705 are connected to wedge blades 706. The wedge blades 706 are located in the space enclosed by the scraper 703, the connecting rods 705 and the stirring shaft 702. The wedge blades 706 are equally spaced. The rotating shaft 6 located outside the mixing tank 2 is fitted with a shaft seat 707 near the outer wall of the mixing tank 2. The shaft seat 707 is fixed to the support frame 4.

[0086] The method for mixing fiber-reinforced concrete, using a fiber-reinforced concrete mixing device, involves the following specific operating steps:

[0087] Step 1: Place cement and sand for preparing fiber concrete in the feed hopper 309, put the fiber into the fiber feed hopper 308, turn on the drive motor 5, the feed motor 303 and the feed valve 3010, and mix the fiber, cement and sand in the mixing tank 2 for 0.3 min.

[0088] Step 2: Add the mixture into the mixing tank 2 through the water inlet pipe 13 and stir for 2.4~2.6 minutes;

[0089] Step 3: Open the cap 8013, turn on the discharge motor 809, and collect the fiber concrete obtained after mixing.

[0090] The mixing speed in step 1 is 20 r / min, and the mixing speed in step 2 is 40 r / min. The mixture is a solution obtained by mixing water and additives. The additives are a mixture of water-reducing agent, air-entraining agent, and preservative.

Claims

1. A fiber-reinforced concrete mixing device, characterized in that, The mixing tank (2) includes a feeding assembly (3), a water inlet assembly (12), and a discharge assembly (8) connected to the side wall of the mixing tank (2). A rectangular support assembly (1) is provided next to the side wall of the mixing tank (2) opposite to the position of the feeding assembly (3). Two support frames (4) are vertically connected to the support assembly (1) near the surface of the mixing tank (2). The mixing tank (2) is located between the two support frames (4). A drive motor (5) is installed on the surface of one of the support frames (4). A rotating shaft (6) is connected to the output end of the drive motor (5). The rotating shaft (6) passes through the port of the mixing tank (2) and is rotatably connected to the other support frame (4). A mixing assembly (7) is installed on the side wall of the rotating shaft (6) inside the mixing tank (2). A control assembly (9) is installed on the surface of the support frame (4). The control assembly (9) is electrically connected to the feeding assembly (3), the drive motor (5), the water inlet assembly (12), and the discharge assembly (8). The discharge assembly (8) is located close to the support assembly (1). The discharge assembly (8) includes a discharge port (801) opened on the side wall of the mixing tank (2). The discharge port (801) is fitted with a movable door (803). The movable door (803) is movably connected to the side wall of the mixing tank (2). The surface of the movable door (803) is provided with a through hole (802). The mixing tank (2) is connected to a first discharge tank (804) in the shape of a cylinder through the through hole (802). A discharge hopper (804) has a rotating groove (805) at its port away from the mixing tank (2). The rotating groove (805) is rotatably connected to one end of a cone-shaped second discharge hopper (806). The axis of the first discharge hopper (804) is at an angle of 45° to 60° to the vertical direction of the mixing tank (2). A cap (8013) is fitted at the port of the second discharge hopper (806) away from the first discharge hopper (804). A first rotating... A gear (807) is provided, and a second rotating gear (808) is sleeved on the side wall of the second discharge hopper (806). A discharge motor (809) is connected to the movable door (803) near the surface of the first discharge hopper (804). The discharge motor (809) is located next to the first discharge hopper (804). A rotating rod (8010) is connected to the output end of the discharge motor (809). A third rotating gear (8011) and a fourth rotating gear (8012) are sequentially sleeved on the rotating rod (8010) away from the discharge motor (809). The first rotating gear (807) meshes with the third rotating gear (8011), and the second rotating gear (808) meshes with the fourth rotating gear (8012). The gear spacing of the third rotating gear (8011) and the fourth rotating gear (8012) is different. Several stirring blades (8014) are provided on the inner walls of both the first discharge hopper (804) and the second discharge hopper (806). The support assembly (1) includes a base plate (101), the surface of which is connected to the support frame (4). The base plate (101) is provided with casters (102) on both sides away from the support frame (4). An extension plate (103) is connected to the side wall of the base plate (101). A positioning bolt (104) is threaded through the surface of the extension plate (103). A support foot (105) is connected to one end of the positioning bolt (104), and a knob (106) is connected to the other end of the positioning bolt (104). The mixing tank (2) and the support frame (4) are fixed together by bolts. The stirring assembly (7) includes two spiral blades (701) sleeved on a rotating shaft (6) in a vortex shape. The rotation angle of the spiral blades (701) is 40°~50°. The two spiral blades (701) are respectively set close to the two ends of the rotating shaft (6) inside the stirring tank (2). The diameter of the two spiral blades (701) gradually decreases away from the inner wall of the stirring tank (2). A hollow stirring shaft (702) is sleeved on the rotating shaft (6) between the two spiral blades (701). The side wall of the stirring shaft (702) is connected to a scraper (703) through two connecting rods (705). The two connecting rods (705) are far away from the inner wall of the stirring tank (2). The stirring shaft (702) is connected to the scraper (703) at its port. The stirring shaft (702) is connected to the side wall of the material turning plate (704). The scraper (703) and the material turning plate (704) are set at equal intervals. Both connecting rods (705) are connected to wedge blades (706). The wedge blades (706) are located in the space enclosed by the scraper (703), the connecting rods (705) and the stirring shaft (702). The wedge blades (706) are set at equal intervals. A shaft seat (707) is fitted on the rotating shaft (6) located outside the stirring tank (2) near the outer wall of the stirring tank (2). The shaft seat (707) is fixed to the support frame (4).

2. The fiber-reinforced concrete mixing device according to claim 1, characterized in that, The feeding assembly (3) includes a hollow fiber feeding top box (301) communicating with the mixing tank (2). Two parallel drive shafts (302) are installed inside the fiber feeding top box (301). One end of one drive shaft (302) passes through the side wall of the fiber feeding top box (301) and is connected to the output end of a feeding motor (303). The feeding motor (303) is connected to the side wall of the mixing tank (2). The other end of the drive shaft (302) passes through the side wall of the fiber feeding top box (301) and is fitted with a first synchronous pulley (304). One end of the other drive shaft (302) passes through the side wall of the fiber feeding top box (301) and is fitted with a synchronous belt (305). The other drive shaft (302) has a... The end is rotatably connected to the inner wall of the fiber feeding top box (301). The synchronous belt (305) and the first synchronous pulley (304) are located on the same side of the fiber feeding top box (301). The synchronous belt (305) and the first synchronous pulley (304) are connected by a second synchronous pulley (306). The two drive shafts (302) inside the fiber feeding top box (301) are connected to the side walls with guide plates (307). The fiber feeding top box (301) is connected to the side wall with a fiber feeding bucket (308). The fiber feeding bucket (308) is connected to a flange (3012) at the port away from the fiber feeding top box (301). The fiber feeding bucket (308) and the mixing tank (2) are symmetrically arranged about the fiber feeding top box (301).

3. The fiber-reinforced concrete mixing device according to claim 2, characterized in that, The mixing tank (2) has a feeding hopper (309) connected to the feeding assembly (3) on its side wall. The feeding hopper (309) is V-shaped. A feeding valve (3010) is provided at the connection between the feeding hopper (309) and the mixing tank (2). A support rod (3011) is connected between the bottom of the feeding hopper (309) and the support assembly (1). An observation hole (10) is provided on the side wall of the mixing tank (2). The observation hole (10) is fitted with a glass window (11).

4. The fiber-reinforced concrete mixing device according to claim 3, characterized in that, The water inlet assembly (12) is located near the feed assembly (3). The water inlet assembly (12) includes a water inlet pipe (13), which is Y-shaped. Two of the water inlet pipe (13) are connected to the side wall of the mixing tank (2), and a water inlet valve (14) is provided at the other end of the water inlet pipe (13).

5. The fiber-reinforced concrete mixing device according to claim 4, characterized in that, The control component (9) includes a control box (901), a chip (902) is provided inside the control box (901), a switch group (903) and a display (904) are provided on the surface of the control box (901), the chip (902) is connected to the switch group (903) and the display (904) respectively through signal lines, and the chip (902) is electrically connected to the drive motor (5), the feed motor (303), the water inlet valve (14) and the discharge motor (809) respectively.

6. A method for mixing fiber-reinforced concrete, characterized in that, The specific operating steps for using the fiber-reinforced concrete mixing device according to claim 5 are as follows: Step 1: Place cement and sand for preparing fiber concrete in the feed hopper (309), put the fiber into the fiber feed bucket (308), turn on the drive motor (5), feed motor (303) and feed valve (3010), and mix the fiber, cement and sand in the mixing bucket (2) for no more than 0.5 min; Step 2: Open the water inlet valve (14) and add the mixture into the mixing tank (2) through the water inlet pipe (13) and stir for 2.4~2.6 minutes; Step 3: Open the cap (8013), turn on the discharge motor (809), and collect the fiber concrete obtained after mixing. The mixing and stirring rate in step 1 is 20~50 r / min, and the mixing and stirring rate in step 2 is 20~50 r / min. The mixture is a solution obtained by mixing water and additives.

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