A device and method for detecting steel fiber content in UHPC mixture

Abstract

The invention relates to the field of material science and engineering technology, in particular to a device and method for detecting steel fiber content in a UHPC mixture, comprising a frame; a centrifugal part, comprising a box body and an inner liner, a first driving device is installed on the frame, and an output end of the first driving device is transmission-connected with the inner liner; a stripping part, comprising a support pipe, a dilution sleeve and a collecting bag, a water inlet pipe is installed at an inlet end of the dilution pipe, the dilution sleeve has a water outlet, and the collecting bag is arranged between the opening of the inner liner and the dilution pipe; a top plate is rotatably installed on the top surface of the box body, a feed pipe is obliquely installed on the top plate, a second driving device is fixedly installed on the box body, a push rod is fixedly installed at the output end of the second driving device, and the push rod is rotationally connected with the feed pipe. The invention utilizes centrifugal force to separate steel fibers from matrix materials in the UHPC mixture, and realizes efficient separation and collection of steel fibers from matrix materials by combining centrifugal separation and hydraulic dilution, which not only improves the accuracy and efficiency of detection, but also greatly reduces the complexity of operation and safety hazards.

Description

Technical Field

[0001] The invention relates to the field of material science and engineering technology, and in particular to a device and method for detecting steel fiber content in a UHPC mixture. Background Art

[0002] UHPC is a special type of concrete with extremely high strength, durability and corrosion resistance. This concrete is usually composed of cement, fine aggregates, mineral additives (such as silica fume), high-performance plasticizers and reinforcing fibers (mainly steel fibers). The application of steel fibers in UHPC greatly improves the tensile properties and toughness of the material, helps control the development of cracks, and enhances its ability to withstand impact. Therefore, ensuring the uniform distribution and appropriate content of steel fibers in the concrete mixture is crucial to achieving the best performance of UHPC. If the fiber distribution is uneven or the content is inappropriate, it may lead to performance degradation and affect the overall safety and reliability of the structure.

[0003] The current method for determining the content of steel fiber includes the steps of volume determination, multiple washings, adsorption of steel fiber, secondary washing, drying and weighing. The test involves a high degree of manual participation and has poor operability. The steps are cumbersome and inefficient. Summary of the invention

[0004] In view of the above problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the technical problems to be solved by the present invention are that the manual participation is heavy and the operability is poor, the steel fiber content detection efficiency is low, the accuracy is not high, and it cannot adapt to the continuous production environment.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a device for detecting the content of steel fibers in a UHPC mixture, comprising:

[0007] frame;

[0008] The centrifugal part comprises a box body and an inner liner, wherein the box body is fixedly mounted on the frame and is provided with a feed pipe, and a first driving device is fixedly mounted on the frame, wherein an output end of the first driving device is transmission-connected with the inner liner to enable the inner liner to rotate in the box body;

[0009] The stripping part includes a support tube, a dilution sleeve and a collecting bag. The inlet end of the dilution tube is provided with a water inlet pipe for connecting to an external water source. The dilution sleeve has a water outlet hole. A piston pad is fixedly installed on the inner wall of the dilution sleeve and can reciprocate along the axial direction of the support tube. The collecting bag is arranged between the inner liner opening and the dilution tube.

[0010] Among them, a top plate is rotatably installed on the top surface of the box body, the feed pipe is obliquely installed on the top plate, a second driving device is fixedly installed on the box body, a push rod is fixedly installed on the output end of the second driving device, the push rod is rotatably connected to the feed pipe, and the push rod and the output end of the second driving device form an angle of 50°<α<65°.

[0011] As a preferred solution of the device for detecting steel fiber content in a mixture of the present invention, a hollow ball is rotatably installed in the top plate, and the feed pipe passes through the hollow ball and is fixedly installed with a surrounding plate.

[0012] As a preferred solution of the device for detecting steel fiber content in a mixture of the present invention, a retaining ring is fixedly installed in the support tube, a metal plate is fixedly installed on the open end of the dilution sleeve close to the support tube, a vertical shaft is fixedly installed in the dilution sleeve, a stopper is fixedly installed on the vertical shaft, and the retaining ring abuts against the inclined surface of the stopper;

[0013] Wherein, a magnetic component for fixing the metal plate is fixedly mounted on the inner container.

[0014] As a preferred solution of the device for detecting steel fiber content in the mixture of the present invention, a connecting ring is rotatably installed on the outer edge surface of the metal plate, a supporting arm is rotatably connected between the connecting ring and the inner liner, and the collecting bag is sewn on the supporting arm.

[0015] As a preferred solution of the steel fiber content detection device in the mixture of the present invention, wherein: an electromagnetic plate is fixedly installed on the support tube, a guide rod is fixedly installed on the electromagnetic plate, a feed hole is correspondingly opened on the metal plate, and the guide rod is slidably installed in the feed hole;

[0016] Wherein, an elastic member is movably mounted on the guide rod, and two ends of the elastic member are respectively in contact with the metal plate and the electromagnetic plate.

[0017] As a preferred solution of the device for detecting steel fiber content in a mixture of the present invention, a track groove is provided on the outer wall of the support tube, a sliding pin is fixedly installed on the inner wall of the dilution sleeve, and the sliding pin is slidably installed in the track groove.

[0018] As a preferred solution of the device for detecting steel fiber content in a mixture of the present invention, the inner wall of the support tube has a protrusion, the protrusion is located above the retaining ring, an elastic sheet is installed on the vertical axis, and the elastic sheet abuts against the protrusion.

[0019] As a preferred solution of the device for detecting steel fiber content in a mixture of the present invention, a heat pipe is fixedly installed in the box, and the heat pipe is externally connected to a heat source for drying the mixture.

[0020] As a preferred solution of the device for detecting steel fiber content in the mixture of the present invention, wherein: a branch pipe is fixedly connected between the water inlet pipe and the heat pipe, a ball seat is fixedly installed in the branch pipe, a first channel is provided in the ball seat, a ball valve is rotatably installed in the ball seat, a second channel is provided in the ball valve, a balance rod is rotatably installed in the vertical axis, and the balance rod is fixedly connected to the ball valve.

[0021] A method for detecting steel fiber content in a UHPC mixture comprises the following steps:

[0022] S1: Take representative quantitative samples from the UHPC mixture according to the construction specifications;

[0023] S2: Place the sampled UHPC mixture into a suitable container and prepare for the separation and cleaning process;

[0024] S3: Use physical methods to separate the steel fibers from the UHPC mixture. The separation process may need to be performed multiple times, and the separated steel fibers are cleaned to ensure complete separation;

[0025] S4: Dry the cleaned steel fiber thoroughly;

[0026] S5: Weigh the total weight of the dried steel fiber and record the data.

[0027] The beneficial effects of the present invention are as follows: the UHPC mixture flows into the inner tank through the feed pipe and is evenly thrown on the cloth bag under the drive of the first motor, the water source enters the lifting and dilution sleeve through the support pipe and is sprayed out from the water outlet, the water source contacts the UHPC mixture and dilutes the UHPC mixture to wash away the internal colloid without multiple washing, and then the inner tank rotates in the box body, and the steel fiber and the matrix material in the UHPC mixture are separated by centrifugal force, and the efficient separation and collection of the steel fiber and the matrix material are achieved by combining centrifugal separation and hydraulic dilution, which not only improves the accuracy and efficiency of detection, but also greatly reduces the complexity of operation and safety hazards, and provides strong technical support for the quality control of UHPC materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0029] Figure 1A schematic diagram of the overall structure of a device for detecting steel fiber content in a UHPC mixture according to an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the internal structure of a box of a device for detecting steel fiber content in a UHPC mixture according to an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of the installation structure of a support tube and a dilution sleeve of a device for detecting steel fiber content in a UHPC mixture according to an embodiment of the present invention;

[0032] Figure 4 A schematic diagram of the inner tank structure for detecting the steel fiber content in a UHPC mixture according to an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of the internal structure of a support tube for detecting the steel fiber content in a UHPC mixture according to an embodiment of the present invention;

[0034] Figure 6 A schematic diagram of the ball seat and ball valve structure for detecting the steel fiber content in a UHPC mixture according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0038] Furthermore, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0039] Combine the following Figure 1-Figure 6The invention describes a device and method for detecting the steel fiber content in a UHPC mixture.

[0040] Reference Figure 1 and Figure 2 and Figure 3 This embodiment provides a device for detecting steel fiber content in a UHPC mixture, including a frame 100 , a centrifugal part 200 and a stripping part 300 .

[0041] The centrifugal part 200 includes a box body 201 and an inner liner 202. The box body 201 is fixedly mounted on the frame 100 and has a feed pipe 201a for introducing the UHPC mixture to be tested. A first driving device 203 is fixedly mounted on the frame 100. The output end of the first driving device 203 is transmission-connected to the inner liner 202. Optionally, pulleys are installed on the output end of the first driving device 203 and the inner liner 202. The two pulleys are connected by a belt for transmitting power, so that the inner liner 202 rotates in the box body 201, and the steel fibers in the UHPC mixture are separated from the matrix material by centrifugal force.

[0042] The stripping part 300 includes a support tube 301, a dilution sleeve 302 and a collecting bag 303. The inlet end of the dilution sleeve 302 is equipped with a water inlet pipe 309 for connecting to an external water source to dilute the separated matrix material for subsequent processing. The dilution sleeve 302 has a water outlet hole 302a, and the water outlet holes 302a are arranged along the circumference of the dilution sleeve 302. Optionally, a piston pad 302b is fixedly installed on the inner wall of the dilution sleeve 302 and can reciprocate along the axial direction of the support tube 301, so that the space between the dilution sleeve 302 and the support tube 301 is relatively sealed to ensure that the internal pressure can lift the dilution sleeve 302. The collecting bag 303 is arranged between the opening of the inner liner 202 and the dilution sleeve 302, and is used to collect the separated steel fibers and filter out excess water and fine particles to ensure the purity of the steel fibers.

[0043] Specifically, a top plate 201b is rotatably mounted on the top surface of the box body 201, and a feed pipe 201a is obliquely mounted on the top plate 201b, which is conducive to the smooth introduction of the UHPC mixture. A second driving device 204 is fixedly mounted on the box body 201, and a push rod 207 is fixedly mounted on the output end of the second driving device 204. The push rod 207 is rotatably connected to the feed pipe 201a, and an angle α is formed between the push rod 207 and the output end of the second driving device 204, 50°<α<65°, preferably, α is 60°, so that the UHPC mixture can be evenly thrown onto the collection bag 303 during rotation.

[0044] In the present embodiment, a device for detecting the content of steel fibers in a UHPC mixture is provided. The UHPC mixture flows into the inner tank 202 through the feed pipe 201a and is evenly thrown onto the collecting bag 303 under the drive of the first driving device 203. The water source enters the lifting and dilution sleeve 302 through the support pipe 301 and is sprayed out from the water outlet 302a. The water source contacts the UHPC mixture and dilutes the UHPC mixture to wash away the internal colloid. Then, the inner tank 302 rotates in the box 201 and uses centrifugal force to separate the steel fibers from the matrix material in the UHPC mixture. By combining centrifugal separation and hydraulic dilution, efficient separation and collection of the steel fibers and the matrix material are achieved, which not only improves the accuracy and efficiency of the detection, but also greatly reduces the complexity of the operation and the potential safety hazards, and provides strong technical support for the quality control of UHPC materials.

[0045] Each structure is described in detail below with reference to the accompanying drawings.

[0046] In order to further optimize the performance of the steel fiber content detection device in UHPC mixture, especially to improve the stability and accuracy of the feeding process, refer to Figure 1 and Figure 2 A hollow ball 206 is rotatably mounted in the top plate 201b, and the feed pipe 201a passes through the hollow ball 206 and is fixedly mounted with a shroud 206a. The design of the hollow ball 206 can effectively prevent external air or impurities from entering the inner liner 202 during the feeding process, especially when the feed pipe 201a is rotating or tilted, so as to keep the inner liner 202 clean and sealed, which is very important for maintaining the accuracy of the test results and reduces the material splashing or clogging caused by direct exposure of the feed port. Since the hollow ball 206 can be mounted on the top plate 201b, the material splashing or clogging caused by the direct exposure of the feed port can be reduced. 1b, even when the feed pipe 201a changes direction or position, it can maintain a good material introduction effect, improve the adaptability and operational convenience of the equipment, avoid the disordered diffusion of the mixed material under high-speed rotation, and improve the separation efficiency. The feed pipe 201a passes through the hollow ball 206 and is connected with the enclosure 206a to form an efficient material transmission channel. Even under high-speed rotation conditions, it can ensure the smooth introduction of the mixture, avoid uneven feeding due to pressure changes, optimize the feeding process, and improve the controllability and efficiency of the detection process.

[0047] Reference Figure 2 and Figure 3 and Figure 4 A retaining ring 301a is fixedly installed in the support tube 301, a metal plate 304 is fixedly installed on the open end of the dilution sleeve 302 close to the support tube 301, a vertical shaft 302c is fixedly installed in the dilution sleeve 302, a stopper 302d is fixedly installed on the vertical shaft 302c, and the retaining ring 301a and the stopper 302d are against each other on the inclined surface;

[0048] Specifically, a magnetic member 305 for fixing the metal plate 304 is fixedly mounted on the inner liner 202 to ensure the stability of the dilution sleeve 302 during the centrifugation process.

[0049] Optionally, the magnetic member is a magnet or the like.

[0050] Through the above-mentioned structure, water enters the support tube 301 and pushes the block 302d, and the block 302d drives the dilution sleeve 302 to slide on the support tube 301 through the vertical shaft 302c. Through this synergistic effect, after the water enters the support tube 301, it can not only effectively push the dilution sleeve 302 to slide, increase the contact area between the water and the mixture, and improve the dilution effect, but also shorten the distance from the opening of the inner liner 202 by moving the metal plate 304 upward, so that the collection bag 303 fits the inner liner 202 wall better, and improves the collection efficiency of steel fibers. In addition, the distance between the dilution sleeve 302 and the enclosure 206a is reduced, which helps to flush the inner wall of the enclosure 206a, reduce the adhesion of the mixture, and further optimize the smoothness and accuracy of the detection process.

[0051] Furthermore, a connecting ring 304a is rotatably installed on the outer edge surface of the metal plate 304, which increases the flexibility of the metal plate 304. A support arm 308 is rotatably connected between the connecting ring 304a and the inner liner 202, and the collecting bag 303 is sewn on the support arm 308. As the dilution sleeve 302 moves upward, the support arm 308 rotates accordingly, so that the collecting bag 303 fits more closely on the wall of the inner liner 202, thereby improving the collection efficiency of the steel fiber.

[0052] In order to further optimize the linkage mechanism between the support tube 301 and the metal plate 304 of the steel fiber content detection device in the UHPC mixture, refer to Figure 3 An electromagnetic plate 306 is fixedly mounted on the support tube 301 for adsorbing steel fibers to separate the steel fibers from other media in the mixture. A guide rod 307 is fixedly mounted on the electromagnetic plate 306. A discharge hole 304b is correspondingly opened on the metal plate 304, and the guide rod 307 is slidably mounted in the discharge hole 304b.

[0053] Specifically, an elastic member 307a is movably mounted on the guide rod 307, and the two ends of the elastic member 307a are respectively in contact with the metal plate 304 and the electromagnetic plate 306, playing a role of buffering and resetting. When the metal plate 304 is moved upward by an external force (such as water flow), the elastic member 307a is stretched to absorb part of the impact force and protect the device from damage; when the external force disappears, the elastic member 307a returns to its original state and pushes the metal plate 304 back to the initial position to ensure the stability and repeatability of the system.

[0054] Through the arrangement of the above structure, the cooperation between the guide rod 307 and the discharge hole 304b provides guidance for the vertical movement of the metal plate 304, ensuring that it moves up and down stably along the predetermined path to avoid deviation, thereby achieving accurate dilution of the UHPC mixture and efficient collection of steel fibers. The collected steel fibers are adsorbed on the electromagnetic plate 306 to separate the steel fibers from other media in the mixture. The buffering effect of the elastic member 307a can also ensure the stability and safety of the entire system during operation, thereby improving the accuracy and reliability of detection.

[0055] In order to enhance the accuracy and reliability of the detection device for steel fiber content in UHPC mixture, especially for the guidance and positioning of the dilution sleeve 302, refer to Figure 3 and Figure 5 A track groove 301c is provided on the outer wall of the support tube 301, and a sliding pin 302e is fixedly installed on the inner wall of the dilution sleeve 302. The sliding pin 302e is slidably installed in the track groove 301c, providing a clear movement track for the sliding pin 302e, ensuring that the dilution sleeve 302 slides smoothly along the preset path, avoiding deviation or shaking under the action of water pressure or other external forces, and improving the stability and accuracy of the entire device.

[0056] Furthermore, the inner wall of the support tube 301 has a protrusion 301b, which is located above the retaining ring 301a and serves as a physical barrier to limit the moving speed of the dilution sleeve 302 to prevent excessive expansion or damage caused by excessive water pressure. An elastic sheet 302c-1 is installed on the vertical shaft 302c, and the elastic sheet 302c-1 abuts against the protrusion 301b. Through its elasticity and rigidity, it not only ensures good contact between the dilution sleeve 302 and the support tube 301, but also provides a certain elastic buffer when the dilution sleeve 302 is pushed by water pressure, prevents hard collision, protects the structural integrity of the device and prolongs its service life.

[0057] Through the arrangement of the above-mentioned structure, not only the precise control of the movement trajectory of the dilution sleeve 302 is achieved, ensuring the uniformity and thoroughness of the water dilution process, but also the potential damage caused by water pressure changes is effectively avoided through the limiting mechanism of the elastic sheet 302c-1 and the protrusion 301b, thereby improving the controllability and safety of the entire detection process. At the same time, the vibration generated by the abutment between the elastic sheet 302c-1 and the protrusion 301b acts on the collection bag 303, accelerating the separation of the filtered steel fibers and other substances.

[0058] Reference Figure 2 and Figure 6A heat pipe 400 is fixedly installed in the box 201, and the heat pipe 400 is connected to a heat source. Optionally, the heat source is hot air, which is used to dry the residual moisture of the mixture after centrifugal separation and dilution treatment, accelerate the drying process of the steel fiber, and facilitate subsequent weighing and content calculation. The threaded structure increases the contact area between the heat pipe and the mixture, and improves the heat exchange efficiency.

[0059] Furthermore, a branch pipe 401 is fixedly connected between the water inlet pipe 309 and the heat pipe 400, a ball seat 402 is fixedly installed in the branch pipe 401, a first channel 402a is provided in the ball seat 402, a ball valve 403 is rotatably installed in the ball seat 402, a second channel 403a is provided in the ball valve 403, a balance rod 302c-2 is rotatably installed in the vertical axis 302c, and the balance rod 302c-2 is fixedly connected to the ball valve 403.

[0060] Through the arrangement of the above structure, after the separation is completed, the hot air dries the impurities inside the collecting bag 303. Due to the high temperature acting on the magnetic part 305, the magnetic part 305 temporarily loses its magnetism and releases the adsorption on the metal plate 304. The dilution sleeve 302 is reset under the pulling force of the elastic part 307a and drives the collecting bag 303 to pull, thereby pulling down the impurities adhering to the collecting bag 303. Through the rotation of the balance rod 302c-2, the switch of the ball valve 403 can be remotely controlled to realize dynamic adjustment of the hot air, and through synchronization with the movement of the dilution sleeve 302, the coordination of the hot air supply and the dilution process is ensured. In the process of diluting or cleaning the steel fiber with the hot air, the generation of bubbles can increase the agitation of the liquid, help to more effectively separate the steel fiber and the matrix material, and improve the accuracy of the detection. The accuracy and efficiency of the detection are improved.

[0061] A method for detecting steel fiber content in a UHPC mixture comprises the following steps:

[0062] S1: Take representative quantitative samples from the UHPC mixture according to the construction specifications;

[0063] S2: The sample flows into the inner tank 202 through the feed pipe 201a and the UHPC mixture is evenly thrown onto the collection bag 303 under the drive of the first drive device 203;

[0064] S3: The water source enters the lifting and dilution sleeve 302 through the support pipe 301 and is sprayed out from the water outlet 302a. The water source contacts the UHPC mixture and dilutes the UHPC mixture to wash away the internal colloid. Then, the inner tank 302 rotates in the box 201 to separate the steel fibers and the matrix material in the UHPC mixture by centrifugal force.

[0065] S4: By rotating the balance bar 302c-2, the switch of the ball valve 403 can be remotely controlled to achieve dynamic adjustment of the hot air, and by synchronizing with the movement of the dilution sleeve 302, the coordination of the hot air supply and the dilution process is ensured. In the process of diluting or cleaning the steel fiber with hot air, the generation of bubbles can increase the agitation of the liquid, help to more effectively separate the steel fiber and the matrix material, and improve the accuracy and efficiency of the detection;

[0066] S5: After separation, hot air dries the impurities inside the collection bag 303. Due to the high temperature acting on the magnetic member 305, the magnetic member 305 temporarily loses its magnetism and releases the adsorption on the metal plate 304. The dilution sleeve 302 is reset under the pulling force of the elastic member 307a and drives the collection bag 303 to be pulled, pulling off the impurities adhering to the collection bag 303. At the same time, the vibration generated by the contact between the elastic sheet 302c-1 and the protrusion 301b acts on the collection bag 303, accelerating the separation of the filtered steel fibers and other substances.

[0067] S6: The steel fiber is adsorbed by the electromagnetic plate 306 and can be separated from other media in the mixture.

[0068] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0069] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0070] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A device for detecting steel fiber content in UHPC mixture, characterized in that: include: frame; The centrifugal part comprises a box body and an inner liner, wherein the box body is mounted on the frame and connected to a feed pipe, a first driving device is fixedly mounted on the frame, and an output end of the first driving device is transmission-connected to the inner liner to make the inner liner rotate in the box body; The stripping part includes a support tube, a dilution sleeve and a collection bag, wherein the inlet end of the dilution sleeve is provided with a water inlet pipe, the dilution sleeve has a water outlet and can reciprocate along the axial direction of the support tube, and the collection bag is arranged between the opening of the inner liner and the dilution sleeve; A top plate is rotatably mounted on the top surface of the box body, the feed pipe is obliquely mounted on the top plate, a second drive device is fixedly mounted on the box body, a push rod is fixedly mounted on the output end of the second drive device, the push rod is rotatably connected to the feed pipe, and the push rod and the output end of the second drive device form an angle α, 50°<α<65°; A hollow ball is rotatably installed in the top plate, and the feed pipe passes through the hollow ball and is fixedly installed with a surrounding plate; A retaining ring is fixedly installed in the support tube, a metal plate is fixedly installed on the open end of the dilution sleeve close to the support tube, a vertical shaft is fixedly installed in the dilution sleeve, a stopper is fixedly installed on the vertical shaft, and the retaining ring abuts against the inclined surface of the stopper; Wherein, a magnetic member for fixing the metal plate is fixedly mounted on the inner liner; An electromagnetic plate is fixedly mounted on the support tube, a guide rod is fixedly mounted on the electromagnetic plate, a material discharge hole is correspondingly opened on the metal plate, and the guide rod is slidably mounted in the material discharge hole; Wherein, an elastic member is movably mounted on the guide rod, and two ends of the elastic member are respectively in contact with the metal plate and the electromagnetic plate; A track groove is provided on the outer wall of the support tube, a sliding pin is fixedly installed on the inner wall of the dilution sleeve, and the sliding pin is slidably installed in the track groove; The inner wall of the support tube has a protrusion, and the protrusion is located above the retaining ring. An elastic sheet is installed on the vertical shaft, and the elastic sheet abuts against the protrusion.

2. The device for detecting steel fiber content in UHPC mixture according to claim 1, characterized in that: A connecting ring is rotatably mounted on the outer edge surface of the metal plate, a supporting arm is rotatably connected between the connecting ring and the inner container, and the collecting bag is arranged on the supporting arm.

3. The device for detecting steel fiber content in UHPC mixture according to claim 2, characterized in that: A heat pipe is fixedly installed in the box, and the heat pipe is externally connected to a heat source for drying the mixture.

4. The device for detecting steel fiber content in UHPC mixture according to claim 3, characterized in that: A branch pipe is fixedly connected between the water inlet pipe and the heat pipe, a ball seat is fixedly installed in the branch pipe, a first channel is provided in the ball seat and a ball valve is rotatably installed in the ball seat, a second channel is provided in the ball valve, a balance rod is rotatably installed in the vertical shaft, and the balance rod is fixedly connected to the ball valve.

5. A method for detecting steel fiber content in a UHPC mixture, comprising a device for detecting steel fiber content in a UHPC mixture as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: S1: Take quantitative samples from UHPC mixture; S2: placing the sampled UHPC mixture into a container, ready for separation and cleaning process; S3: Separate the steel fibers from the UHPC mixture. The separation process needs to be performed multiple times, and the separated steel fibers are cleaned to ensure complete separation. S4: Dry the cleaned steel fiber thoroughly; S5: Weigh the total weight of the dried steel fiber and record the data.

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