Ultrahigh ductility concrete manufacturing device capable of uniformly dispersing fibers without flying

Abstract

The invention discloses an ultra-high ductility concrete manufacturing device capable of uniformly dispersing fibers without flying, which comprises a powerful air blower and a concrete mixer, a communication air duct is arranged between the powerful air blower and the concrete mixer, and a feeding assembly for feeding fiber clusters before dispersion is arranged in the communication air duct. A stirring structure for stirring the fiber clusters before dispersion and a screening structure for screening are also arranged in the communicating air duct; and the tail end of the communicating air duct is used for feeding the dispersed fibers into a concrete stirring machine. According to the invention, strong gas is adopted to blow the fibers, through multi-layer stirring and screening, the problem of high-efficiency and uniform dispersion of the fibers is solved, and a method that the dispersed fibers are directly blown into a cement matrix which is being stirred by adopting a fan-shaped flat opening is adopted, so that the problems of fiber flying and wall hanging in the mixing process of the ultrahigh-ductility concrete are effectively solved. The method effectively solves the two problems in the manufacturing process of the ultrahigh ductility concrete in the current industry, and has higher engineering popularization and application values.

Description

Technical Field

[0001] The present invention belongs to the technical field of ultra-high ductility concrete, and in particular relates to a device for producing ultra-high ductility concrete with evenly dispersed and non-flying fibers. Background Art

[0002] Currently, composite materials in many fields use chopped fibers as reinforcement, such as ultra-high ductility concrete. However, after manufacturing, the chopped fibers often clump and bundle, which seriously reduces the uniformity and mechanical properties of ultra-high ductility concrete. Furthermore, during the mixing process of ultra-high ductility concrete, the chopped fibers tend to fly and stick to the wall, reducing the fiber content in the ultra-high ductility concrete and making it difficult to clean the mixer. These problems of chopped fibers clumping, bundling, and flying in ultra-high ductility concrete remain technical challenges that have yet to be overcome, both domestically and internationally.

[0003] Chinese Patent No. 201110206746.4 discloses a pneumatic stirring and dispersing device for clustered fibers, which provides a pneumatic stirring and dispersing device for clustered fibers, wherein the inner cone bucket is provided with uniformly distributed ascending dispersed airflow nozzles and multiple groups of electrostatic nozzles, the inner cone bucket is provided with a jet port, the jet port is connected to a jet airflow inlet and a conveying pipeline, and the outer cone bucket is provided with a floating airflow inlet; a pneumatic dispersing and mixing chamber connected to the outer cone bucket, the pneumatic dispersing and mixing chamber is provided with multiple groups of clockwise lateral stirring and splitting airflow nozzles and counterclockwise lateral stirring and splitting airflow nozzles, the clockwise lateral stirring and splitting airflow nozzles and the counterclockwise lateral stirring and splitting airflow nozzles are connected to an air source, or a pneumatic splitting and mixing chamber is provided with a pneumatic splitting and mixing chamber. A stirring airflow outer cylinder is provided around the pneumatic dispersion mixing chamber, a gap is formed between the pneumatic dispersion mixing chamber and the stirring airflow outer cylinder, the stirring airflow outer cylinder is provided with a lateral stirring and splitting airflow inlet, the clockwise lateral stirring and splitting airflow nozzle and the counterclockwise lateral stirring and splitting airflow nozzle communicate with the inner cavity of the pneumatic dispersion mixing chamber and the gap between the pneumatic dispersion mixing chamber and the stirring airflow outer cylinder, the clockwise lateral stirring and splitting airflow nozzle and the counterclockwise lateral stirring and splitting airflow nozzle are respectively located in different planes, a conveying channel is connected to the pneumatic dispersion mixing chamber, the other end of the channel is connected to a sedimentation mixing chamber, and the bottom of the sedimentation mixing chamber is a net-forming sedimentation bucket. This patent mainly uses two relative clockwise and counterclockwise airflows in the pneumatic dispersion mixing chamber to disperse the fibers. It is only effective for fibers with poor adhesion. However, for fibers with high adhesion that are clumped or bundled, it is difficult to achieve effective dispersion by relying solely on the pneumatic dispersion method of this patent.

[0004] Chinese Patent 202210262125.6 discloses a PVA fiber dispersion processing method for preparing ECC concrete, which includes the following steps: S10. Spraying and cleaning the PVA fiber material to be processed; S20. Drying the cleaned PVA fiber material; S30. Sequentially impregnating and rolling the PVA fiber material; S40. Drying the surface-treated PVA fiber material; S50. Setting a fiber screen and a first fan, so that the PVA fiber material after the post-drying operation will move toward the fiber screen under the action of the first fan, and be separated and pass through the mesh of the fiber screen; S60. Collecting; temporarily storing and collecting the dispersed PVA fibers. The patent's fiber dispersion method is as follows: a first fan 62 is used to blow the fibers toward a screen 63, and a guide agitator wheel 64 is used to effectively ensure that the PVA fiber material 1 on the first workbench 61 is concentrated toward the center of the first workbench 61, thereby being better positioned within the wind force range of the first fan 62 to facilitate the dispersion of the PVA fiber material 1. This patent only uses the first fan 62 to blow the fibers toward the screen 63, while the guide agitator wheel 64 primarily serves to guide the fibers toward the screen 6. This method has low fiber dispersion efficiency and makes it difficult to achieve the goal of efficiently dispersing clumped and bundled fibers. Summary of the Invention

[0005] The present invention is proposed to solve the problems existing in the prior art, and its purpose is to provide a device for producing ultra-high ductility concrete with evenly dispersed fibers and no flying fibers.

[0006] The technical solution of the present invention is: a device for producing ultra-high ductility concrete with uniformly dispersed fibers and no flying, comprising a powerful blower and a concrete mixer, wherein a connecting air duct is provided between the powerful blower and the concrete mixer, wherein a feeding component for feeding pre-dispersed fiber clusters is provided in the connecting air duct, and a stirring structure for stirring the pre-dispersed fiber clusters and a screening structure for screening are also provided in the connecting air duct, and the end of the connecting air duct feeds the dispersed fibers into the concrete mixer.

[0007] Furthermore, the feeding component includes a single-flange tee pipe, which is connected to the connecting air duct, and the third interface of the single-flange tee pipe is used to feed the pre-dispersed fiber clusters.

[0008] Furthermore, a core area non-hole circular steel plate is provided at the third interface, and the core area non-hole circular steel plate realizes the opening and closing of the third interface.

[0009] Furthermore, the screening structure includes a single flange straight pipe, which is connected to the connecting air duct. A core area large-hole distribution circular steel plate is set on the outlet side of the single flange straight pipe, and the core area large-hole distribution circular steel plate is used for coarse screening.

[0010] Furthermore, the screening structure includes a double-flange straight pipe, which is connected to the connecting air duct. A core area small hole distribution circular steel plate is set on the outlet side of the double-flange straight pipe, and the core area small hole distribution circular steel plate is used for fine screening.

[0011] Furthermore, the double-flange straight pipe is communicated with the double-flange tee pipe, and the third interface of the double-flange tee pipe is communicated with the fan-shaped flat port through a hose.

[0012] Furthermore, the fan-shaped flat mouth is a conical expansion mouth that increases the delivery of dispersed fibers, and the fan-shaped flat mouth is placed in a concrete mixer.

[0013] Furthermore, the stirring structure is arranged in the single-flange straight pipe or the double-flange straight pipe, and the stirring structure stirs the fiber clusters before dispersion.

[0014] Furthermore, the stirring structure is a single-drive linkage stirring structure.

[0015] Furthermore, the single-flange straight pipe, double-flange straight pipe, and double-flange three-way pipe are connected from bottom to top.

[0016] The beneficial effects of the present invention are as follows: The present invention solves the problem of efficient and uniform fiber dispersion by using powerful gas to blow the fibers through multi-level stirring and screening. It adopts a fan-shaped flat mouth to blow the dispersed fibers directly into the cement matrix being stirred, effectively solving the problem of fiber flying and hanging on the wall during the mixing process of ultra-high ductility concrete.

[0017] The present invention effectively solves two major problems in the production process of ultra-high ductility concrete in the current industry and has high engineering promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic structural diagram of a circular steel plate without holes in the core area of ​​the present invention; Figure 3 This is a schematic structural diagram of a circular steel plate with large holes distributed in the core area of ​​the present invention; Figure 4 This is a schematic structural diagram of a circular steel plate with small holes distributed in the core area of ​​the present invention; Figure 5 This is a schematic structural diagram of a circular steel plate with a single hole in the core area of ​​the present invention; in: 1. Powerful blower 2. Round pipe diameter adapter 3 corrugated hose 4 single flange tee pipe 5 core area round steel plate without holes 6 bolts 7Single flange straight pipe8Double flange straight pipe 9Double flange tee pipe 10Core area large hole distribution round steel plate 11 Core area circular steel plate with small holes 12 Core area circular steel plate with single hole 13 steel shaft 14 small mixing impeller 15 Large stirring impeller 16 Coupling 17 Turning point 18 Hose 19 fan-shaped flat mouth 20 support frame 21 Fiber cluster before dispersion 22 Fiber after dispersion 23 Concrete mixer 501 first bolt hole 1001 First center circular hole 1002 Large diameter circular hole 1003 Second bolt hole 1101 Second center circular hole 1102 Small diameter circular hole 1103 Third bolt hole 1201 third center circle hole 1202 fourth bolt hole DETAILED DESCRIPTION

[0019] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and embodiments: like Figures 1 to 5 As shown, a device for producing ultra-high ductility concrete with uniformly dispersed fibers and no flying is provided, comprising a powerful blower 1 and a concrete mixer 23. A connecting air duct is provided between the powerful blower 1 and the concrete mixer 23. The connecting air duct is provided with a feeding component for feeding pre-dispersed fiber clusters 21. The connecting air duct is also provided with a stirring structure for stirring the pre-dispersed fiber clusters 21 and a screening structure for screening. The end of the connecting air duct feeds the dispersed fibers 22 into the concrete mixer 23.

[0020] The feeding component includes a single-flange tee pipe 4 , which is connected to the connecting air duct. The third interface of the single-flange tee pipe 4 is used to feed the pre-dispersed fiber cluster 21 .

[0021] A core area non-porous circular steel plate 5 is provided at the third interface, and the core area non-porous circular steel plate 5 realizes the opening and closing of the third interface.

[0022] The screening structure includes a single flange straight pipe 7, which is connected to the connecting air duct. A core area large-pore distribution circular steel plate 10 is set on the outlet side of the single flange straight pipe 7, and the core area large-pore distribution circular steel plate 10 performs coarse screening.

[0023] The screening structure includes a double-flange straight pipe 8, which is connected to the connecting air duct. A core area small hole distribution circular steel plate 11 is set on the outlet side of the double-flange straight pipe 8, and the core area small hole distribution circular steel plate 11 performs fine screening.

[0024] The double-flange straight pipe 8 is connected to the double-flange tee pipe 9 , and the third interface of the double-flange tee pipe 9 is connected to the fan-shaped flat port 19 through a hose 18 .

[0025] The fan-shaped flat opening 19 is a conical expansion opening for increasing the size of the dispersed fibers 22 and for feeding out. The fan-shaped flat opening 19 is placed in a concrete mixer 23 .

[0026] The stirring structure is provided in the single-flange straight pipe 7 and the double-flange straight pipe 8 , and the stirring structure stirs the fiber clusters 21 before dispersion.

[0027] The stirring structure is single-drive linkage stirring.

[0028] The single-flange straight pipe 7, the double-flange straight pipe 8, and the double-flange tee pipe 9 are connected from bottom to top.

[0029] Specifically, the air outlet of the powerful blower 1 is connected to one end of the corrugated hose 3, and there is a diameter difference between the powerful blower 1 and the corrugated hose 3, and a round tube diameter conversion head 2 is provided between the two.

[0030] Specifically, the other end of the corrugated hose 3 is connected to the single flange tee pipe 4, the second interface of the single flange tee pipe 4 is connected to another corrugated hose 3, and the air outlet of the other corrugated hose 3 is connected to the lower end of the vertically placed single flange straight pipe 7.

[0031] Specifically, such as Figure 2 As shown, a first bolt hole 501 is formed in the core area non-hole circular steel plate 5, and a bolt 6 passes through the above-mentioned first bolt hole 501 and a flange hole in the single flange tee pipe 4 and is fixed. The core area non-hole circular steel plate 5 can rotate around the bolt 6, thereby opening and closing the third interface of the single flange tee pipe 4, and the pre-dispersed fiber cluster 21 is placed through the third interface.

[0032] Specifically, the flange of the single-flange straight pipe 7 is at the upper end, and is connected to the double-flange straight pipe 8 through the above-mentioned flange. The upper end of the double-flange straight pipe 8 is connected to the double-flange tee pipe 9, and the upper end of the double-flange tee pipe 9 is provided with a core area single-hole circular steel plate 12.

[0033] Specifically, the third interface of the double-flange tee pipe 9 is located at the side wall and is connected to the hose 18 through the round pipe diameter conversion head 2.

[0034] Specifically, a support frame 20 is provided at the upper flange of the single-flange straight pipe 7 and the lower flange of the double-flange straight pipe 8. The support frame 20 supports and fixes the single-flange straight pipe 7, the double-flange straight pipe 8 and the double-flange tee pipe 9 connected as one, so that the three are in a vertical state.

[0035] Specifically, the single-flange straight pipe 7 , the double-flange straight pipe 8 , and the double-flange tee pipe 9 are coaxial.

[0036] Specifically, such as Figure 3 As shown, the core area large-hole distribution circular steel plate 10 is arranged between the single-flange straight pipe 7 and the double-flange straight pipe 8, and the core area large-hole distribution circular steel plate 10 performs coarse screening. A second bolt hole 1003 is formed in the core area large-hole distribution circular steel plate 10, and the second bolt hole 1003 is aligned with the flange holes in the single-flange straight pipe 7 and the double-flange straight pipe 8.

[0037] A first central circular hole 1001 is formed in the middle of the core area large hole distribution circular steel plate 10. The first central circular hole 1001 is used for the passage of the steel shaft 13 in the stirring structure. A large diameter circular hole 1002 is also formed in the middle of the core area large hole distribution circular steel plate 10. The fiber clusters 21 are coarsely screened through the large diameter circular holes 1002 before dispersion.

[0038] Specifically, such as Figure 4 As shown, the core area small hole distribution circular steel plate 11 is arranged between the double flange straight pipe 8 and the double flange tee pipe 9, and the core area small hole distribution circular steel plate 11 is finely screened. The core area small hole is distributed in the double flange straight pipe 8 and the double flange tee pipe 9 to form a third bolt hole 1103, and the third bolt hole 1103 is aligned with the flange hole.

[0039] Specifically, a second center circular hole 1101 is formed in the middle of the core area small hole distribution circular steel plate 11, and the second center circular hole 1101 is also used for the passage of the steel shaft 13 in the stirring structure. A small diameter circular hole 1102 is also formed in the middle of the core area small hole distribution circular steel plate 11, and the small diameter circular hole 1102 is used for fine screening.

[0040] More specifically, the diameter of the small-diameter circular hole 1102 is smaller than that of the large-diameter circular hole 1002 .

[0041] Specifically, such as Figure 5As shown, a core area single hole circular steel plate 12 is provided at the upper end of the double flange tee 9. A fourth bolt hole 1202 is formed in the core area single hole circular steel plate 12. The fourth bolt hole 1202 is aligned with the flange of the double flange tee 9 to fix the two. A third central circular hole 1201 is formed in the middle of the core area single hole circular steel plate 12. The third central circular hole 1201 is used to pass the steel shaft 13 in the stirring structure.

[0042] Specifically, the stirring structure includes a steel shaft 13 , which vertically passes through the core area single-hole circular steel plate 12 , the core area small-hole distribution circular steel plate 11 , and the core area large-hole distribution circular steel plate 10 . The steel shaft 13 is driven by a rotary machine 17 .

[0043] Specifically, the steel shaft 13 is a whole structure, and the coupling 16 is used to fix the vertical position of the steel shaft 13 .

[0044] Specifically, a small stirring impeller 14 and a large stirring impeller 15 are provided on the steel shaft 13 in the single flange straight pipe 7. The large stirring impeller 15 is close to the core area large-hole distribution circular steel plate 10, and the small stirring impeller 14 is close to the air inlet of the single flange straight pipe 7.

[0045] Specifically, a small stirring impeller 14 and a large stirring impeller 15 are provided on the steel shaft 13 in the double-flange straight pipe 8. The large stirring impeller 15 is close to the core area small hole distribution circular steel plate 11, and the small stirring impeller 14 is located in the middle of the double-flange straight pipe 8. Example

[0046] A device for producing ultra-high ductility concrete in which fibers are evenly dispersed and do not fly, comprising a powerful blowing device 1 that can provide strong wind force, thereby effectively and comprehensively blowing the pre-dispersed fiber cluster 21 forward; a circular tube diameter conversion head 2 realizes the sealed connection of circular tubes of large and small diameters; a corrugated hose 3 is made of transparent material, which can effectively observe the movement of the fibers; a single-flange tee 4 is made of transparent material, and a connecting flange is provided on the upper part; the outer diameter of the core area non-hole circular steel plate 5 is the same as the upper flange of the single-flange tee 4, and a first bolt hole 501 is provided around it for connection with the upper flange of the single-flange tee 4; a bolt 6 is used for connecting the core area non-hole circular steel plate 5 with the single-flange tee 4, and only one bolt 6 is used for connection. Rotating the core area non-hole circular steel plate 5 can realize the switching of the upper tube of the single-flange tee 4, thereby realizing the input of the pre-dispersed fiber cluster 21 into the single-flange tee 4.

[0047] The single flange straight pipe 7 is made of transparent material and is provided with a connecting flange on the upper part; the double flange straight pipe 8 is made of transparent material and is provided with connecting flanges on the upper and lower parts; the double flange tee pipe 9 is made of transparent material and is provided with connecting flanges on the upper and lower parts, and is provided with a single hole closing plate inside, and the central single hole is used for the steel shaft (13) to pass through and prevent the fiber from moving upward.

[0048] The core area large hole distribution circular steel plate 10 is provided with a first central circular hole 1001 for the steel shaft 13 to pass through. In addition, the steel plate area is distributed with larger diameter circular holes 1002, which are used for coarse screening of fiber dispersion. Second bolt holes 1003 are provided around the periphery for connecting the upper flange of the single flange straight pipe 7 and the lower flange of the double flange straight pipe 8.

[0049] The core area small hole distribution circular steel plate 11 is provided with a second central circular hole 1101 for the steel shaft 13 to pass through. In addition, smaller diameter circular holes 1102 are distributed in the steel plate area for fine screening of fiber dispersion. A third bolt hole 1103 is provided around it for connecting the upper flange of the double flange straight pipe 8 and the lower flange of the double flange tee pipe 9.

[0050] A third center circular hole 1201 is provided in the core area single-hole circular steel plate 12 for the steel shaft 13 to pass through, and a fourth bolt hole 1202 is provided around it for connection with the flange on the double-flange tee 9; the steel shaft 13 can pass through the third center circular hole 1201 of the core area single-hole circular steel plate 12, the center circular hole of the single-hole closing plate of the double-flange tee 9, the second center circular hole 1101 of the core area small-hole distribution circular steel plate 11, and the first center circular hole 1001 of the core area large-hole distribution circular steel plate 10, and can be connected to the turntable 17, the small stirring impeller 14, the large stirring impeller 15 and the coupling 16.

[0051] The small stirring impeller 14 is a three-leaf type, with a central hole for the steel shaft 13 to pass through, and a relatively small outer diameter, and is used for the initial dispersion of the fibers.

[0052] The large stirring impeller 15 is a three-blade type, with a central hole for the steel shaft 13 to pass through, and a relatively large outer diameter, for redispersing the fibers.

[0053] The coupling 16 is provided with a central hole for the steel shaft 13 to pass through, and has a bolt fastening function, so that reliable fastening with the steel shaft 13 can be achieved.

[0054] The turning device 17 has a rotation speed gear adjustment function, can realize high, medium and low speed rotation, and can be reliably connected to the steel shaft 13.

[0055] The hose 18 is made of transparent material and can be bent at any angle. The lower end is connected to the fan-shaped flat mouth 19. When the fan-shaped flat mouth 19 embedded in the cement matrix is ​​subjected to the stirring force of the concrete mixer 23, it can be released through appropriate deformation of the hose 18, thereby protecting the fan-shaped flat mouth 19 from being damaged by the stirring force of the concrete mixer 23.

[0056] The fan-shaped flat mouth 19 is made of hard material to achieve the transition from a round tube to a flat fan shape, and is embedded in the cement matrix being stirred. The dispersed fibers 22 can be directly and evenly sprayed into the cement matrix being stirred in the concrete mixer 23.

[0057] The support frame 20 is used to reliably support the device; the fiber cluster 21 before dispersion is a short-cut fiber cluster containing various states, including dispersed fibers, clumped fibers, and bundled fibers. The core area non-porous round steel plate 5 is in an open state and is placed in the single flange tee pipe 4.

[0058] The dispersed fibers 22 are fibers dispersed by the device.

[0059] The concrete mixer 23 is used to mix the cement matrix of the ultra-high ductility concrete.

[0060] The working process of the present invention is as follows: Connect all the above components except the fiber cluster 21 before dispersion and the fiber cluster 22 after dispersion.

[0061] The turntable 17 is started to make the small stirring impeller 14 and the large stirring impeller 15 move at a suitable rotation speed.

[0062] The concrete mixer 23 is started to start mixing the cement matrix of the ultra-high ductility concrete.

[0063] Start the powerful blowing equipment 1, so that the single flange tee pipe 4 is in a negative wind pressure state; the rotating core area non-porous circular steel plate 5 is in an open state, and relying on the negative wind pressure in the single flange tee pipe 4, the pre-dispersed fiber cluster 21 is put into the single flange tee pipe 4, and then the rotating core area non-porous circular steel plate 5 is closed; driven by the strong wind force of the powerful blowing equipment 1, the pre-dispersed fiber cluster 21 passes through the corrugated hose 3 and comes into the single flange straight pipe 7.

[0064] Before dispersion, the fiber cluster 21 is first dispersed by the small stirring impeller 14 rotating in the single flange straight pipe 7, and then dispersed again by the large stirring impeller 15 in the single flange straight pipe 7, and then passes through the coarse screen of the large-hole distribution circular steel plate 10 in the core area; the fibers after coarse screening enter the double flange straight pipe 8.

[0065] Similarly, the fibers are first dispersed by the small stirring impeller 14 rotating in the double-flange straight pipe 8, and then dispersed again by the large stirring impeller 15 in the double-flange straight pipe 8, and then pass through the fine screen of the core area small hole distribution circular steel plate 11; the fibers after the fine screen pass through the circular tube diameter conversion head 2 and the hose 18 to the fan-shaped flat mouth 19.

[0066] The fan-shaped flat opening 19 is embedded in the cement matrix being stirred, and the dispersed fibers 22 can be directly and evenly sprayed into the cement matrix being stirred in the concrete mixer 23, thereby achieving the purpose of uniform fiber dispersion and non-flying during the mixing process of ultra-high ductility concrete.

[0067] The present invention solves the problem of efficient and uniform fiber dispersion by using powerful gas to blow the fibers through multi-level stirring and screening. It adopts a fan-shaped flat mouth to blow the dispersed fibers directly into the cement matrix being stirred, effectively solving the problem of fiber flying and hanging on the wall during the mixing process of ultra-high ductility concrete.

[0068] The present invention effectively solves two major problems in the production process of ultra-high ductility concrete in the current industry and has high engineering promotion and application value.

Claims

1. A device for producing ultra-high ductility concrete with uniformly dispersed and non-flying fibers, comprising a powerful blower (1) and a concrete mixer (23), characterized in that: A connecting air duct is provided between the powerful blower (1) and the concrete mixer (23), wherein a feeding assembly for feeding the pre-dispersed fiber clusters (21) is provided in the connecting air duct, and a stirring structure for stirring the pre-dispersed fiber clusters (21) and a screening structure for screening are also provided in the connecting air duct, and the end of the connecting air duct feeds the dispersed fibers (22) into the concrete mixer (23).

2. The device for producing ultra-high ductility concrete with uniformly dispersed and non-flying fibers according to claim 1, characterized in that: The feeding component comprises a single-flange tee pipe (4), the single-flange tee pipe (4) being connected to the connecting air duct, and the third interface of the single-flange tee pipe (4) is used to feed the pre-dispersed fiber cluster (21).

3. The device for producing ultra-high ductility concrete with uniformly dispersed and non-flying fibers according to claim 2, characterized in that: A core area non-porous circular steel plate (5) is provided at the third interface, and the core area non-porous circular steel plate (5) enables the opening and closing of the third interface.

4. The device for producing ultra-high ductility concrete with uniformly dispersed and non-flying fibers according to claim 1, characterized in that: The screening structure comprises a single flange straight pipe (7), the single flange straight pipe (7) is connected to the connecting air duct, and a core area large hole distribution circular steel plate (10) is provided on the outlet side of the single flange straight pipe (7), and the core area large hole distribution circular steel plate (10) performs coarse screening.

5. The device for producing ultra-high ductility concrete with uniformly dispersed and non-flying fibers according to claim 4, characterized in that: The screening structure comprises a double-flange straight pipe (8), the double-flange straight pipe (8) being connected to the connecting air duct, and a core area small hole distribution circular steel plate (11) being provided on the outlet side of the double-flange straight pipe (8), and the core area small hole distribution circular steel plate (11) performing fine screening.

6. The device for producing ultra-high ductility concrete with uniformly dispersed and non-flying fibers according to claim 5, characterized in that: The double-flange straight pipe (8) is in communication with the double-flange tee pipe (9), and the third interface of the double-flange tee pipe (9) is in communication with the fan-shaped flat port (19) via a hose (18).

7. The device for producing ultra-high ductility concrete with uniformly dispersed and non-flying fibers according to claim 6, characterized in that: The fan-shaped flat opening (19) is a conical expansion opening for increasing the amount of dispersed fibers (22) to be delivered, and the fan-shaped flat opening (19) is placed in a concrete mixer (23).

8. The device for producing ultra-high ductility concrete with uniformly dispersed and non-flying fibers according to claim 5, characterized in that: The stirring structure is arranged in the single-flange straight pipe (7) and the double-flange straight pipe (8), and the stirring structure stirs the fiber cluster (21) before dispersion.

9. The device for producing ultra-high ductility concrete with uniformly dispersed and non-flying fibers according to claim 1, characterized in that: The stirring structure is single-drive linkage stirring.

10. The device for producing ultra-high ductility concrete with uniformly dispersed and non-flying fibers according to claim 6, characterized in that: The single-flange straight pipe (7), the double-flange straight pipe (8), and the double-flange three-way pipe (9) are connected from bottom to top.

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