Concrete grouting device for building construction

Abstract

The embodiment of the invention relates to the technical field of concrete grouting devices, and one embodiment of the invention provides a concrete grouting device for building construction, which comprises a grouting cylinder used for communicating with an outlet of a sky pump or a ground pump, and the grouting cylinder is provided with a grouting channel; the stirring part is rotationally arranged in the grouting channel, the upper portion of the stirring part is provided with a conical part, the conical part is provided with a spiral material plate, the spiral material plate is used for enabling the stirring part to be driven by concrete to rotate after the concrete flows through, and a plurality of stirring rods are further arranged in the middle of the stirring part; the shredding part is arranged at the lower part of the stirring part, follows the stirring part and is used for shredding the concrete through a steel wire so as to defoam the concrete. By means of the technical scheme, the technical problem that in the prior art, the concrete defoaming effect is poor during building construction grouting is solved. Through the dual effects of stirring of the stirring piece and shredding of the shredding piece, bubbles generated in the concrete pumping process can be effectively eliminated, and the compactness of the concrete is improved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of concrete grouting device technology, and more specifically, to a concrete grouting device for building construction. Background Technology

[0002] In building construction, concrete, as a core structural material, directly determines the quality of the project and the durability of the structure through its density and strength. With the development of large-scale and efficient construction, pumping equipment such as overhead pumps and ground pumps have become the mainstream equipment for concrete pouring due to their advantages of long conveying distance and high pouring efficiency, and are widely used in large-scale projects such as high-rise buildings, bridges, and tunnels.

[0003] However, the problem of air bubbles cannot be effectively solved during the transportation of concrete using either overhead or ground pumps, thus affecting the quality of the concrete. During the mixing, pipeline transportation, and pressure grouting stages, air bubbles may be present in the concrete due to factors such as aggregate air content, admixture reactions, air entrainment during mechanical mixing, and pressure changes within the pipeline. These air bubbles are pumped along with the concrete to the pouring site. If they are not eliminated in time, they will cause voids to form inside the hardened concrete and honeycomb-like pitting to appear on the surface. This not only reduces the effective load-bearing area of ​​the concrete cross-section, causing a decrease in compressive strength, but also accelerates the surface carbonation process, reduces the effectiveness of the steel reinforcement protective layer, and significantly weakens the structure's corrosion resistance and durability.

[0004] Aluminum formwork casting is a construction process in which customized aluminum alloy formwork is assembled into component cavities, concrete is poured, and after vibration, curing, and demolding, a concrete structure is formed. It has the characteristics of high precision, multiple reuses, and good surface flatness after demolding, and is a commonly used construction method in industrialized buildings.

[0005] The impact of air bubbles in concrete pouring using aluminum formwork is far greater than that of traditional wooden formwork. Due to the smooth surface and good airtightness of aluminum formwork, air bubbles are more likely to be trapped and difficult to expel, resulting in significant hazards: internal air bubbles reduce the effective load-bearing section of the concrete, lowering structural strength, and can also become channels for corrosive media to penetrate, weakening durability; surface air bubbles form pits and depressions, undermining the advantage of aluminum formwork pouring without plastering, requiring additional repairs and increasing construction costs; at the same time, rework due to defects will delay the construction period, and repair operations may also damage the aluminum formwork, reducing its reusability and efficiency, which is a key issue restricting the construction quality of this process.

[0006] Aluminum formwork cast walls and floors have the advantages of smooth surface, airtightness, and no need for secondary plastering. However, aluminum formwork has higher requirements for air bubbles in concrete. If the concrete contains air bubbles, it is difficult to remove them after casting, which can easily form pits and pinholes on the concrete surface, thus destroying the high precision advantage of aluminum formwork casting.

[0007] Current defoaming methods mostly involve adding chemical defoamers during the mixing stage or mechanical vibration after pouring. However, chemical defoamers are difficult to deal with newly generated air bubbles during pumping; mechanical vibration has blind spots and is ineffective at eliminating air bubbles in hidden areas formed during pumping grouting, failing to solve the potential problem of air bubbles in pumped concrete. Therefore, there is an urgent need to develop a concrete defoaming grouting device suitable for both overhead and ground pumping scenarios, which can simultaneously complete defoaming treatment during the grouting process to ensure the quality of concrete pouring. This has become a pressing need in the construction industry. Summary of the Invention

[0008] To overcome the above-mentioned defects, the embodiments of this disclosure provide a concrete grouting device for building construction, which solves the technical problem of poor defoaming effect of concrete during grouting in building construction in the prior art.

[0009] According to one aspect, at least one embodiment of this disclosure provides a concrete grouting device for building construction, comprising: Grouting cylinder, which is used to connect to the outlet of overhead pump or ground pump, and has grouting channel; A mixing component is rotatably disposed within the grouting channel. The upper part of the mixing component has a conical portion, and the conical portion has a spiral material plate. The spiral material plate is used to cause the mixing component to rotate due to the concrete flow. The middle part of the mixing component also has several mixing rods. A wire cutter is disposed below and follows the mixing component, and is used to cut the concrete with steel wire, thereby defoaming the concrete.

[0010] For example, at least one embodiment of this disclosure provides a concrete grouting device for building construction, wherein the wire cutting component includes: An extension rod, which is connected to the bottom of the stirring element; An annular component is disposed at the lower end of the extension rod and slides against the inner wall of the grouting cylinder. A steel wire component, one end of which is connected to the extension rod and the other end of which is connected to the ring component. There are several steel wire components, and several steel wire components are arranged in a group along the circumference of the extension rod, and several groups of steel wire components are arranged along the length of the extension rod.

[0011] For example, at least one embodiment of this disclosure provides a concrete grouting device for building construction, wherein several steel wires in each group are arranged in a conical shape, and the taper of the cone formed by the several groups of steel wires decreases sequentially from top to bottom.

[0012] For example, at least one embodiment of this disclosure provides a concrete grouting device for building construction, wherein the annular component includes: A first annular body, the inner wall of the first annular body having a connecting portion, the connecting portion being connected to the extension rod; The second annular body is rotatably disposed within the first annular body, and there are several of them arranged sequentially along the axial direction of the first annular body. One end of each group of several steel wires is located in the circumferential direction of the extension rod, and the other end is connected to the same second annular body.

[0013] For example, at least one embodiment of this disclosure provides a concrete grouting device for building construction. The first annular body has an arc-shaped guide groove, and the second annular body has a guide portion. The guide portion is slidably disposed in the arc-shaped guide groove. The device also includes a first elastic element and a second elastic element. The first elastic element and the second elastic element are disposed in the arc-shaped guide groove and are respectively located on both sides of the guide portion, for providing a force for the second annular body to rotate and center.

[0014] For example, a concrete grouting device for building construction provided in at least one embodiment of this disclosure further includes: A sliding connector, which is annular and slidably disposed on the extension rod along the length direction of the extension rod, comprises several sliding connectors, with one end of several steel wires in each group connected to the same sliding connector. The connector also includes a third elastic element, which acts on the sliding connector to provide a force for the sliding connector to move upward and tighten the steel wires.

[0015] For example, at least one embodiment of this disclosure provides a concrete grouting device for building construction, wherein the third elastic element is sleeved on the extension rod, and adjacent sliding connectors are acted upon by the two ends of the third elastic element.

[0016] For example, at least one embodiment of this disclosure provides a concrete grouting device for building construction, wherein the grouting channel has a variable diameter section, the mixing element is located within the variable diameter section, and the cross-sectional area of ​​the variable diameter section gradually increases and then gradually decreases from top to bottom.

[0017] For example, at least one embodiment of this disclosure provides a concrete grouting device for building construction, which further includes an annular outer cylinder, the lower end of which extends into the annular outer cylinder, and an exhaust channel is formed between the inner wall of the annular outer cylinder and the outer wall of the grouting cylinder, the upper end of which communicates with the outside.

[0018] For example, at least one embodiment of this disclosure provides a concrete grouting device for building construction, wherein the annular outer cylinder is fixedly connected to the grouting cylinder, the channel wall of the variable diameter section has a plurality of venting communication holes, the venting communication holes are connected to the venting channel, and the lower end of the venting communication holes is inclined toward the variable diameter section.

[0019] The working principle and beneficial effects of the embodiments disclosed herein are as follows: As the mixing unit rotates, the wire cutter rotates synchronously. During rotation, the wire cutter cuts and breaks up air bubbles in the concrete, further eliminating them. When the pumping equipment starts, the concrete begins to flow into the grouting channel. The concrete impacts the spiral feed plate, causing the mixing unit to rotate, and the mixing rod further agitates the concrete. During mixing, air bubbles inside the concrete are disturbed by the mixing rod 220, causing some bubbles to rise and burst, achieving initial defoaming.

[0020] As the concrete continues to flow downwards within the grouting channel, the rotating wire cutter cuts through the concrete. The wire cutter breaks up air bubbles in the concrete, further eliminating them and increasing the concrete's density.

[0021] In this disclosure, the dual action of mixing by the mixing component and cutting by the cutting component can effectively eliminate air bubbles generated during concrete pumping, improve the density of concrete, reduce the occurrence of internal voids and surface honeycomb pitting in hardened concrete, thereby improving the compressive strength of concrete.

[0022] The design of the circumferential arrangement and length distribution of the wire cut pieces can effectively eliminate air bubbles in hidden areas formed by pump grouting, making up for the shortcomings of mechanical vibration and improving the corrosion resistance and durability of concrete structures. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a concrete grouting device for building construction in one embodiment of the present disclosure; Figure 2 for Figure 1 A top view of the concrete grouting device for building construction in the embodiment; Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure in cross-section AA in the embodiment; Figure 4 for Figure 2 A schematic diagram of the BB cross-sectional structure in the embodiment; Figure 5 for Figure 1A side view of the concrete grouting device for building construction in the embodiment; Figure 6 for Figure 5 A schematic diagram of the CC cross-sectional structure in the embodiment; In the figure: grouting cylinder 100, grouting channel 110, variable diameter section 111, exhaust connection hole 112, mixing component 200, conical part 210, spiral material plate 211, mixing rod 220, wire cutter 300, extension rod 310, ring component 320, first ring body 321, connecting part 322, arc-shaped guide groove 324, second ring body 323, guide part 325, steel wire component 330, first elastic component 340, second elastic component 350, sliding connection component 360, third elastic component 370, annular outer cylinder 400, exhaust channel 410. Detailed Implementation The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0025] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0027] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] like Figures 1-6 As shown, a concrete grouting device for building construction is illustrated in one embodiment of this disclosure. It includes a grouting cylinder 100, a mixing component 200, and a wire cutter 300. The grouting cylinder 100 is connected to the outlet of a boom pump or a ground pump. The grouting cylinder 100 has a grouting channel 110. The mixing component 200 is rotatably disposed within the grouting channel 110. The upper part of the mixing component 200 has a conical portion 210, and the conical portion 210 has a spiral material plate 211. The spiral material plate 211 is used to cause the mixing component 200 to rotate due to the concrete flow. The middle part of the mixing component 200 also has several mixing rods 220. The wire cutter 300 is disposed at the lower part of the mixing component 200 and follows the mixing component 200. It is used to cut the concrete with steel wire, thereby defoaming the concrete.

[0031] The wire cutting component 300 includes an extension rod 310, an annular component 320, and a steel wire component 330. The extension rod 310 is connected to the bottom of the mixing component 200, and the annular component 320 is disposed at the lower end of the extension rod 310 and slides against the inner wall of the grouting cylinder 100. The steel wire component 330 has one end connected to the extension rod 310 and the other end connected to the ring component 320. There are several steel wire components 330. Several steel wire components 330 are arranged in a group along the circumference of the extension rod 310, and several groups of steel wire components 330 are arranged along the length of the extension rod 310.

[0032] For example, the grouting cylinder 100 is cylindrical in shape, providing stability and durability under concrete pressure. One end of the grouting cylinder 100 is designed with a connection interface adapted to the outlet of a boom pump or ground pump. This interface can be a flange connection, threaded connection, or quick-connect plug-in connection, ensuring a tight connection with the pumping equipment and preventing concrete leakage. The grouting channel 110 is located inside the grouting cylinder 100, and its diameter is designed according to the actual concrete flow rate and pumping pressure during construction, generally slightly larger than the inner diameter of the pumping pipe to ensure smooth concrete flow. The inner wall of the grouting cylinder 100 is smoothed to reduce resistance to concrete flow.

[0033] The grouting cylinder 100, as a component connecting the overhead or ground pump to the pouring location, plays a role in guiding the flow of concrete. It not only provides installation space for the mixing component 200 and the wire cutter 300, but also ensures that the concrete, after being mixed and defoamed by wire cutting, can be stably and accurately delivered to the designated pouring location. It is the basic support structure of the entire defoaming grouting device.

[0034] The main body of the mixing component 200 is a shaft-like structure, with a conical part 210 located at the top. This conical part has evenly distributed spiral plates 211 on its surface. The pitch and height of the spiral plates 211 are designed according to the characteristics and flow rate of the concrete; generally, the pitch is relatively large to ensure that the mixing component 200 can be effectively rotated as the concrete flows through. The mixing rods 220 are located in the middle of the mixing component 200 and are evenly distributed radially. The mixing rods 220 must ensure effective mixing without excessively hindering the flow of concrete. The surface of the mixing rods 220 can be designed with protrusions or grooves to enhance the agitation effect on the concrete during mixing.

[0035] When concrete flows through the grouting channel 110, the spiral feed plate 211, under the impact of the concrete, drives the mixing component 200 to rotate around its own axis. The rotation of the mixing component 200 causes the mixing rod 220 to agitate the concrete, breaking the surface tension of air bubbles inside the concrete, causing the bubbles to rise and burst, thus achieving initial defoaming of the concrete. The agitating action of the mixing rod 220 also makes the concrete composition more uniform, further improving the quality of the concrete.

[0036] The shredder 300 has an extension rod 310, one end of which is firmly connected to the bottom of the agitator 200 to ensure that it can rotate synchronously with the agitator 200.

[0037] The annular component 320 has a circular structure and can slide against the inner wall of the grouting cylinder 100, serving to support and position the wire component 330, while preventing concrete from leaking from the gap between the wire component 300 and the inner wall of the grouting cylinder 100.

[0038] The steel wire component 330 is typically made of high-strength, corrosion-resistant steel wire, such as stainless steel wire. One end of the wire is fixed to the extension rod 310, and the other end is connected to the ring component 320. Several steel wire components 330 are arranged in a group along the circumference of the extension rod 310, and the groups are evenly distributed along the length of the extension rod 310. The number of steel wire components 330 in each group is adjusted according to the actual defoaming effect and concrete flow rate.

[0039] As the mixing unit 200 rotates, the wire cutter 300 rotates synchronously. During rotation, the wire cutter 330 cuts the concrete, breaking up air bubbles and further eliminating them. Because the wire cutters 330 are arranged circumferentially and distributed along the length of the extension rod 310, they can cut and de-bubble concrete at different locations, effectively solving the blind spot problem of mechanical vibration and improving the density of the concrete.

[0040] Before construction, the grouting cylinder 100 is tightly connected to the outlet of the overhead or ground pump via its connection interface. Ensure that the mixing component 200 and the wire cutter 300 are securely installed and can rotate freely.

[0041] When the pumping equipment starts, concrete begins to flow into the grouting channel 110. The concrete impacts the spiral feed plate 211, causing the mixing component 200 to rotate, and the mixing rod 220 then mixes the concrete. During the mixing process, the air bubbles inside the concrete are disturbed by the mixing rod 220, and some air bubbles rise and burst, achieving initial defoaming.

[0042] As the concrete continues to flow downwards within the grouting channel 110, the rotating wire cutter 300 cuts the concrete. The wire cutter 330 cuts and breaks up air bubbles in the concrete, further eliminating air bubbles and increasing the density of the concrete.

[0043] After being mixed and defoamed by slicing, the concrete is transported to the pouring site through the outlet of the grouting cylinder 100 to complete the concrete grouting work.

[0044] The combined action of the mixing component 200 and the cutting component 300 effectively eliminates air bubbles generated during concrete pumping, improves concrete density, reduces internal voids and surface honeycomb pitting in hardened concrete, thereby increasing the compressive strength of concrete.

[0045] The design of the 300mm wire cutter, with its circumferential arrangement and length distribution, can effectively eliminate air bubbles in hidden areas formed by pump grouting, making up for the shortcomings of mechanical vibration and improving the corrosion resistance and durability of concrete structures.

[0046] This device is directly connected to the outlet of the overhead or ground pump, and completes the defoaming treatment simultaneously during the grouting process. No additional construction steps are required, making it suitable for the high-efficiency operation requirements of concrete pumping in building construction and ensuring the quality of concrete pouring.

[0047] In some examples, several wires 330 in each group are arranged in a conical shape around their circumference, and the taper of the cone formed by the several groups of wires 330 decreases from top to bottom. The annular component 320 includes a first annular body 321 and a second annular body 323. The inner wall of the first annular body 321 has a connecting part 322, which is connected to the extension rod 310. The second annular body 323 is rotatably disposed inside the first annular body 321, and several of them are arranged sequentially along the axial direction of the first annular body 321. One end of each group of several wires 330 is located in the circumference of the extension rod 310, and the other end is connected to the same second annular body 323.

[0048] The concrete defoaming grouting device in this embodiment is more suitable for concrete pouring with aluminum formwork. The aluminum formwork has an extremely smooth surface, small joint gaps, and high precision of the concrete surface after pouring. The walls and floors do not need to be plastered again after pouring. However, because of its smooth surface and good sealing, if the concrete contains air bubbles, it is difficult for the air bubbles to be discharged after pouring. They are easy to form on the concrete surface, thus destroying the high precision advantage of aluminum formwork pouring. However, by using the concrete defoaming grouting device in this embodiment, the walls and floors poured with aluminum formwork achieve a very good smoothness without pitting or pinholes.

[0049] In some examples, the first annular body 321 has an arc-shaped guide groove 324, and the second annular body 323 has a guide portion 325. The guide portion 325 is slidably disposed in the arc-shaped guide groove 324. It also includes a first elastic member 340 and a second elastic member 350. The first elastic member 340 and the second elastic member 350 are disposed in the arc-shaped guide groove 324 and are located on both sides of the guide portion 325, respectively, to provide a force for the second annular body 323 to rotate in the center.

[0050] For example, several steel wires 330 in each group are arranged in a conical shape in the circumferential direction, causing the steel wires 330 to diverge outward from the extension rod 310 at a certain angle. Several groups of steel wires 330 are distributed along the length of the extension rod 310, and the taper of the conical shape decreases progressively from top to bottom. For example, the taper of the uppermost group of steel wires 330 is larger, and the taper gradually decreases with each subsequent group downwards. This design allows the steel wires 330 to create different degrees of shearing effect on the concrete at different heights, adapting to the flow characteristics and air bubble distribution of the concrete at different locations within the grouting cylinder 100.

[0051] During the concrete flow process, steel wires 330 at different heights and with different tapers cut the concrete. The upper steel wires 330 with a larger taper can perform initial cutting of the concrete at a more inclined angle, breaking up larger air bubbles. As the concrete flows downwards, the lower steel wires 330 with a gradually decreasing taper further perform fine cutting of the concrete, breaking up the remaining smaller air bubbles, thereby eliminating air bubbles in the concrete more comprehensively and efficiently, and improving the density of the concrete.

[0052] The first annular body 321 has an annular main structure with a connecting part 322 on its inner wall. The connecting part 322 is firmly connected to the lower end of the extension rod 310, ensuring that the first annular body 321 can rotate synchronously with the extension rod 310. The outer wall of the first annular body 321 slides against the inner wall of the grouting cylinder 100, and its outer diameter is adapted to the size of the inner wall of the grouting cylinder 100, ensuring good sealing and smooth sliding. The first annular body 321 is also provided with an arc-shaped guide groove 324, which is distributed along the circumference and has a certain curvature and depth.

[0053] Multiple second annular bodies 323 are arranged sequentially inside the first annular body 321 along its axial direction. Each second annular body 323 has a guide portion 325 on its outer surface, which is adapted to fit an arc-shaped guide groove 324 and can slide within the groove. The inner wall of the second annular body 323 is used to connect one end of each group of steel wires 330, so that when the other end of each group of steel wires 330 is fixed circumferentially to the extension rod 310, circumferential fixation is achieved through the second annular body 323.

[0054] The connection between the first annular body 321 and the extension rod 310 ensures that the entire annular component 320 rotates synchronously with the mixing component 200, thereby driving the wire component 330 to perform wire cutting. Multiple second annular bodies 323 are arranged axially, providing circumferential support and positioning for the wire components 330 at different heights, ensuring the stability of the wire components 330 during rotation. Simultaneously, the second annular bodies 323 can rotate within the first annular body 321, allowing the wire component 330 to adapt to the flow of concrete during wire cutting, improving the wire cutting effect.

[0055] The first elastic element 340 and the second elastic element 350 are typically springs. They are disposed within the arc-shaped guide groove 324, located on opposite sides of the guide portion 325. One end of the elastic element is fixed to the groove wall of the arc-shaped guide groove 324, and the other end contacts the guide portion 325. The spring constant or the elastic modulus of the rubber is selected according to actual needs to provide a suitable elastic force.

[0056] The first elastic element 340 and the second elastic element 350 provide a rotational centering force for the second annular body 323. When the concrete flow exerts a lateral force on the wire member 330, the second annular body 323 will rotate at a certain angle within the arc-shaped guide groove 324. At this time, the elastic element will generate a reverse elastic force, causing the second annular body 323 to return to its centered position. This ensures that the wire member 330 maintains a relatively stable position during rotation, avoiding excessive displacement of the wire member 330 due to the uneven force of the concrete flow, which would affect the wire cutting effect and the stability of the equipment.

[0057] Concrete flows in from the top of the grouting cylinder 100, first contacting the conical part 210 on the upper part of the mixing component 200. The spiral plate 211 drives the mixing component 200 to rotate, and the mixing rod 220 performs preliminary mixing and defoaming of the concrete. Subsequently, the concrete flows to the position of the wire cutter 300, where the steel wire 330 with a larger taper performs preliminary wire cutting of the concrete, breaking up larger air bubbles.

[0058] As the concrete flows downward within the grouting cylinder 100, different sets of steel wire members 330 further slicing the concrete with a gradually decreasing taper. During the slicing process, if the concrete flow generates a lateral force on the steel wire member 330, the second annular body 323 will rotate within the arc-shaped guide groove 324. The guide part 325 squeezes the elastic member on one side, while the elastic member on the other side provides a reverse elastic force, keeping the second annular body 323 in a relatively centered position. This ensures that the steel wire member 330 stably slices the concrete, continuously breaking up air bubbles and improving the concrete density.

[0059] After being mixed and defoamed by cutting, the concrete flows out from the bottom of the grouting cylinder 100 and is transported to the pouring site to complete the grouting work.

[0060] The conical arrangement of the 330 steel wires and the variation of different taper groups make the wire cutting process more consistent with the flow and air bubble distribution of concrete in the grouting cylinder, which can more comprehensively and efficiently eliminate air bubbles of different sizes, and further improve the density and quality of concrete.

[0061] The rotational connection structure between the first annular body 321 and the second annular body 323 in the annular component 320, as well as the central force provided by the elastic component, enable the wire component 330 to adapt to the uneven force of concrete flow, maintain a stable wire cutting position, and improve the stability and reliability of the wire cutting effect.

[0062] Through the synergistic effect of the above-mentioned improved structures, the problem of air bubbles in concrete is effectively solved, the internal pores and surface defects of hardened concrete are reduced, and the compressive strength, corrosion resistance and durability of concrete structures are improved, thereby optimizing the quality of building construction.

[0063] In some examples, a sliding connector 360 is also included. The sliding connector 360 is annular and slidably disposed on the extension rod 310 along its length. There are several sliding connectors 360, with one end of several steel wires 330 in each group connected to the same sliding connector 360. A third elastic element 370 is also included. The third elastic element 370 acts on the sliding connector 360, providing a force that allows the sliding connector 360 to move upward and tighten the steel wires 330. The third elastic element 370 is sleeved on the extension rod 310, and adjacent sliding connectors 360 are acted upon by the two ends of the third elastic element 370.

[0064] For example, the sliding connector 360 is annular, and its inner diameter matches the outer diameter of the extension rod 310, allowing it to slide smoothly along the length of the extension rod 310. Multiple connection points are provided on the outer circumferential surface of the sliding connector 360 for connecting to one end of each group of wire components 330. This ensures a secure connection between the wire components 330 and the sliding connector 360. Multiple sliding connectors 360 are distributed along the length of the extension rod 310, corresponding to different groups of wire components 330.

[0065] The sliding connector 360 provides an adjustable connection point for the wire member 330. During concrete conveying, it can slide on the extension rod 310 according to actual conditions, thereby adjusting the tension and angle of the wire member 330 to better adapt to the flow characteristics and air bubble distribution of the concrete, enhancing the wire-cutting effect. Simultaneously, by changing the position of the sliding connector 360 on the extension rod 310, differentiated wire-cutting treatment can be performed on concrete at different heights, further improving the comprehensiveness and specificity of defoaming.

[0066] The third elastic element 370 can be a spring, with an inner diameter slightly larger than the outer diameter of the extension rod 310, so that it can be fitted onto the extension rod 310. The length and elastic coefficient of the spring are designed according to actual needs to ensure that it can provide a suitable upward support force for the sliding connector 360. A third elastic element 370 is provided between two adjacent sliding connectors 360, with both ends of the spring contacting the two adjacent sliding connectors 360 respectively.

[0067] The third elastic element 370 applies an upward force to the sliding connector 360, ensuring that the wire component 330 maintains a certain tension. When the concrete flow exerts downward pressure or other external forces on the wire component 330, the sliding connector 360 can automatically move upward under the action of the third elastic element 370, maintaining the tension of the wire component 330 and ensuring the stability of the wire cutting effect. This automatic adjustment mechanism effectively adapts to pressure changes and flow conditions of concrete at different locations within the grouting cylinder, further improving the reliability and adaptability of the defoaming device.

[0068] During operation, concrete flows in from the top of the grouting cylinder 100. The spiral plate 211 of the mixing component 200 drives the mixing component 200 to rotate under the impact of the concrete, and the mixing rod 220 performs preliminary mixing and defoaming of the concrete. Subsequently, the concrete enters the action area of ​​the wire cutter 300.

[0069] Different groups of steel wire members 330, connected by their respective sliding connectors 360, begin to cut the concrete. During the cutting process, when the concrete flow exerts downward pressure or other external forces on the steel wire members 330, the sliding connectors 360, under pressure, overcome the elastic force of the third elastic member 370 and move downwards. Once the external force decreases, the third elastic member 370 immediately takes effect, pushing the sliding connector 360 upwards, tightening the steel wire members 330, and restoring them to a suitable tension state, continuously and effectively cutting the concrete and breaking up air bubbles. Simultaneously, because the taper of each group of steel wire members 330 decreases sequentially from top to bottom, steel wire members 330 at different heights can perform differentiated cutting based on the characteristics of the concrete at different locations, comprehensively eliminating air bubbles.

[0070] After being mixed and defoamed by cutting, the concrete flows out from the bottom of the grouting cylinder 100 and is transported to the pouring site to complete the grouting work.

[0071] The cooperation between the sliding connector 360 and the third elastic element 370 enables the wire element 330 to automatically adjust its tension and angle according to the actual flow and stress of the concrete, better adapting to the characteristics of the concrete at different positions in the grouting cylinder, significantly enhancing the adaptability of the wire cutting effect, and further improving the defoaming efficiency.

[0072] By adjusting the sliding connector 360 on the extension rod 310 and varying the taper of different sets of steel wire parts 330, comprehensive defoaming of concrete at different heights and under different flow conditions is achieved, effectively solving the problem of air bubbles of different sizes and distributions in concrete and improving the density and quality of concrete.

[0073] The third elastic element 370 automatically maintains the tension of the wire element 330, reducing the risk of damage caused by the loosening or excessive force of the wire element 330, improving the reliability of the entire wire cutting structure, extending the service life of the equipment, and reducing maintenance costs.

[0074] In some examples, the grouting channel 110 has a variable diameter section 111, and the agitator 200 is located within the variable diameter section 111. The cross-sectional area of ​​the variable diameter section 111 gradually increases and then gradually decreases from top to bottom. It also includes an annular outer cylinder 400, with the lower end of the grouting cylinder 100 extending into the annular outer cylinder 400. An exhaust channel 410 is formed between the inner wall of the annular outer cylinder 400 and the outer wall of the grouting cylinder 100, and the upper end of the exhaust channel 410 communicates with the outside. The annular outer cylinder 400 is fixedly connected to the grouting cylinder 100. The channel wall of the variable diameter section 111 has several exhaust communication holes 112, which communicate with the exhaust channel 410. The lower ends of the exhaust communication holes 112 are inclined towards the variable diameter section 111.

[0075] For example, the variable diameter section 111 is located inside the grouting channel 110, and the mixing component 200 is installed in this section. The cross-sectional area of ​​the variable diameter section 111 gradually increases from top to bottom and then gradually decreases, ensuring a smooth transition of the inner wall to reduce resistance to concrete flow. The dimensions of the variable diameter section 111 are designed based on the concrete flow rate, flow velocity, and the dimensions of the mixing component 200 during actual construction. For example, the inclination angle and length of the initial increasing section must ensure that the concrete can spread smoothly, while the parameters of the subsequent decreasing section must ensure that the concrete can re-converge and flow out smoothly.

[0076] The change in cross-sectional area of ​​the variable-diameter section 111 alters the flow velocity and pressure distribution of concrete within the grouting channel 110. As the concrete enters the gradually increasing upper region of the variable-diameter section 111, the flow velocity decreases and the pressure drops, which facilitates the rising of air bubbles. Conversely, in the gradually decreasing lower region, the concrete flow velocity increases and the pressure rises, further compressing the air bubbles and making them easier to break up. Simultaneously, the mixing component 200 rotates within the variable-diameter section 111, utilizing the velocity and pressure changes caused by the diameter change to enhance the mixing and air bubble breaking effects on the concrete.

[0077] The annular outer cylinder 400 is cylindrical, with an inner diameter larger than the outer diameter of the grouting cylinder 100, allowing the lower end of the grouting cylinder 100 to extend into the annular outer cylinder 400. The annular outer cylinder 400 is fixedly connected to the grouting cylinder 100. An exhaust channel 410 is formed between the inner wall of the annular outer cylinder 400 and the outer wall of the grouting cylinder 100. The upper opening of the exhaust channel 410 communicates with the outside atmosphere, ensuring that gas can be discharged smoothly.

[0078] The venting channel 410 provides a path for air bubbles that rise to the surface in the concrete to escape. During the mixing and defoaming process of the concrete, some air bubbles will rise to the vicinity of the inner wall of the grouting cylinder 100. The venting channel 410 can guide these air bubbles to escape upwards, preventing them from accumulating in the grouting cylinder 100 and further improving the defoaming effect of the concrete.

[0079] Vent holes 112 are distributed on the channel wall of the variable diameter section 111, and their number is set according to the length and diameter of the variable diameter section 111 to ensure that air bubbles within the variable diameter section 111 can be effectively guided to the vent channel 410. The lower end of the vent holes 112 is inclined towards the interior of the variable diameter section 111. This inclined design helps air bubbles to enter the vent holes 112 more easily during their ascent, without being flushed back by the flow of concrete, and also prevents concrete and its internal liquid from flowing out of the vent holes 112. The diameter and inclination angle of the vent holes 112 must ensure that air bubbles can pass through smoothly while preventing concrete leakage.

[0080] The exhaust connection hole 112 establishes a connection between the variable diameter section 111 and the exhaust channel 410, allowing air bubbles that rise in the variable diameter section 111 due to changes in flow velocity and pressure to enter the exhaust channel 410 and be discharged to the outside in a timely manner through the exhaust connection hole 112, thereby further improving the density of the concrete and ensuring its quality.

[0081] Concrete flows into the upper part of the grouting cylinder 100, first entering the variable diameter section 111. In the area where the cross-sectional area of ​​the upper part of the variable diameter section 111 gradually increases, the concrete flow velocity decreases, the pressure decreases, and air bubbles begin to rise. At the same time, the spiral plate 211 of the mixing component 200 drives the mixing component 200 to rotate under the impact of the concrete, and the mixing rod 220 mixes the concrete, further promoting the rise of air bubbles.

[0082] The rising air bubbles enter the exhaust channel 410 through the exhaust connection hole 112 and are discharged upwards to the outside. The concrete continues to flow downwards, and after being mixed by the mixing rod 220 in the middle of the mixing component 200, it reaches the position of the wire cutter 300. The wire 330 of the wire cutter 300 cuts the concrete, further breaking up the air bubbles. During the wire cutting process, the sliding connector 360 and the third elastic component 370 work together to automatically adjust the tension of the wire 330 according to the flow of the concrete.

[0083] After being mixed, cut, and degassed, the concrete continues to flow downwards in the area where the cross-sectional area gradually decreases at the bottom of the variable diameter section 111, flowing out from the bottom of the grouting cylinder 100 and being transported to the pouring location to complete the grouting work.

[0084] The variable diameter section 111 promotes the rise and breakup of air bubbles by changing the flow rate and pressure of the concrete. Combined with the exhaust connection hole 112 and the exhaust channel 410, it forms a highly efficient air bubble discharge system, which significantly improves the defoaming effect of the concrete and further reduces the voids and surface defects inside the hardened concrete.

[0085] By more effectively eliminating air bubbles, the density of concrete is improved, thereby enhancing its compressive strength, corrosion resistance, and durability, and optimizing the quality of building construction.

[0086] The fixed connection between the annular outer cylinder 400 and the grouting cylinder 100, as well as the design of the venting structure, enhance the stability and reliability of the device, while ensuring the smooth discharge of air bubbles and improving the working efficiency of the entire defoaming grouting device.

[0087] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A concrete grouting device for building construction, characterized in that, include: Grouting cylinder (100), the grouting cylinder (100) is used to communicate with the outlet of the overhead pump or the ground pump, the grouting cylinder (100) has a grouting channel (110). A mixing component (200) is rotatably disposed within the grouting channel (110). The upper part of the mixing component (200) has a conical part (210), and the conical part (210) has a spiral material plate (211). The spiral material plate (211) is used to make the mixing component (200) rotate by the concrete after the concrete flows through. The middle part of the mixing component (200) also has several mixing rods (220). A wire cutter (300) is disposed below and follows the mixing element (200) and is used to cut concrete with steel wire to defoam the concrete.

2. A concrete grouting device for building construction according to claim 1, characterized in that, The filament (300) includes: An extension rod (310) is connected to the bottom of the stirring element (200); An annular component (320) is disposed at the lower end of the extension rod (310) and slides against the inner wall of the grouting cylinder (100); A steel wire component (330) is provided, one end of which is connected to the extension rod (310) and the other end of which is connected to the ring component (320). There are several steel wire components (330), and several steel wire components (330) are arranged in a group along the circumference of the extension rod (310). Several groups of steel wire components (330) are arranged along the length direction of the extension rod (310).

3. A concrete grouting device for building construction according to claim 2, characterized in that, The steel wires (330) in each group are arranged in a conical shape, and the taper of the cone formed by the steel wires (330) decreases from top to bottom.

4. A concrete grouting device for building construction according to claim 3, characterized in that, The annular component (320) includes: A first annular body (321) has a connecting part (322) on its inner wall, and the connecting part (322) is connected to the extension rod (310); The second annular body (323) is rotatably disposed inside the first annular body (321), and consists of several arranged sequentially along the axial direction of the first annular body (321). One end of each group of several steel wire pieces (330) is located in the circumferential direction of the extension rod (310), and the other end is connected to the same second annular body (323).

5. A concrete grouting device for building construction according to claim 4, characterized in that, The first annular body (321) has an arc-shaped guide groove (324), and the second annular body (323) has a guide portion (325). The guide portion (325) is slidably disposed in the arc-shaped guide groove (324), and also includes a first elastic element (340) and a second elastic element (350). The first elastic element (340) and the second elastic element (350) are disposed in the arc-shaped guide groove (324) and are respectively located on both sides of the guide portion (325) to provide a force for the second annular body (323) to rotate in the center.

6. A concrete grouting device for building construction according to claim 4, characterized in that, Also includes: A sliding connector (360) is annular and is slidably disposed on the extension rod (310) along the length direction of the extension rod (310). There are several sliding connectors (360), and one end of several steel wires (330) in each group is connected to the same sliding connector (360). It also includes a third elastic element (370), which acts on the sliding connector (360) to provide a force for the sliding connector (360) to move upward and support the steel wires (330).

7. A concrete grouting device for building construction according to claim 6, characterized in that, The third elastic element (370) is sleeved on the extension rod (310), and the two adjacent sliding connectors (360) are acted upon by the two ends of the third elastic element (370).

8. A concrete grouting device for building construction according to claim 4, characterized in that, The grouting channel (110) has a variable diameter section (111), and the agitator (200) is located in the variable diameter section (111). The cross-sectional area of ​​the variable diameter section (111) gradually increases and then gradually decreases from top to bottom.

9. A concrete grouting device for building construction according to claim 8, characterized in that, It also includes an annular outer cylinder (400), the lower end of the grouting cylinder (100) extends into the annular outer cylinder (400), and an exhaust channel (410) is formed between the inner wall of the annular outer cylinder (400) and the outer wall of the grouting cylinder (100), and the upper end of the exhaust channel (410) is connected to the outside.

10. A concrete grouting device for building construction according to claim 9, characterized in that, The annular outer cylinder (400) is fixedly connected to the grouting cylinder (100). The channel wall of the variable diameter section (111) has a plurality of exhaust communication holes (112). The exhaust communication holes (112) are connected to the exhaust channel (410). The lower end of the exhaust communication hole (112) is inclined toward the variable diameter section (111).

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