Pouring protection equipment for underwater self-protection concrete
By using a cover frame and expansion joint to reduce water flow velocity during underwater self-protecting concrete pouring, the problems of concrete quality and protective agent concentration were solved, achieving efficient concrete setting and protective agent distribution.
Patent Information
- Application Number
- CN202422636687.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-30
AI Technical Summary
In high-velocity underwater environments, when pouring underwater self-protecting concrete using the tremie pipe method, it is difficult to guarantee the pouring quality of the concrete and the concentration of the protective agent, resulting in problems such as low setting efficiency and low quality.
The equipment includes pouring pipes, protective devices, and expansion joints. Through components such as the cover frame, fixed clamps, movable clamps, and fixed pulleys, the water flow velocity is reduced to ensure that the concrete is not washed away and to maintain an appropriate concentration of protective agent.
It effectively prevents concrete from being washed away, ensures that the amount of concrete remaining meets the plan, improves setting efficiency and quality, and ensures that the concentration of protective agent is appropriate, thereby enhancing the stability and effectiveness of the pouring process.
Smart Images
Figure CN223523121U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of concrete pouring, in particular to a pouring protection device for underwater self-protecting concrete. BACKGROUND
[0002] Underground continuous wall and cast-in-place pile concrete pouring is usually poured by using a guide pipe method, the guide pipe method is simple to operate and widely used, and underwater self-protecting concrete poured by the guide pipe method refers to a certain amount of underwater self-protecting concrete poured into a specified area through a pouring guide pipe to form a stable underwater protection structure, which can be well poured.
[0003] However, when pouring by using the guide pipe method, the guide pipe outlet is a distance away from the construction site, and when the construction is carried out in a high flow rate underwater environment, the pouring process is continuously scoured by the water flow before initial setting, and it is difficult to ensure the pouring quality of the underwater self-protecting concrete. CONTENT OF THE UTILITY MODEL
[0004] To solve or partially solve the problems in the related art, the present application provides a pouring protection device for underwater self-protecting concrete, which can reduce the flow rate of the water flow during pouring, prevent the concrete from being washed away or the remaining amount from being lower than the planned amount, and make the environmental concentration of the underwater protection agent suitable during pouring.
[0005] The present application provides a pouring protection device for underwater self-protecting concrete, which comprises a pouring guide pipe, a protection device, and an extension device.
[0006] The protection device comprises a cover surface and a steel framework, and the steel framework comprises a cover surface framework and an internal support framework; the extension device comprises a fixed clamp, a movable clamp, a guide rail, and an extension control device, and the extension control device comprises a deck control device and a fixed pulley.
[0007] The cover surface framework is fixed below the cover surface, and one end of the cover surface framework is hingedly connected to one end of the movable clamp; a flower pipe is arranged on the cover surface framework, the upper end of the flower pipe is connected to the output port of an underwater protection agent main pipe, and the lower end of the flower pipe can be immersed in water.
[0008] Both ends of the internal support framework are hingedly connected to the middle part of the cover surface framework and one end of the fixed clamp, respectively.
[0009] The fixed clamp is welded to the outer wall of the pouring guide pipe near the outlet and is hingedly connected to the internal support framework, the movable clamp is movably connected to the guide rail, the inner side of the guide rail is welded to the outer wall of the pouring guide pipe, so that the guide rail is vertically fixed to the pouring guide pipe, and the guide rail is located above the fixed clamp.
[0010] The fixed pulley is welded on the outer wall of the pouring conduit, and is located between the fixed clamp and the guide rail.
[0011] In a possible implementation, the deck control device is integrated into the control device of the pouring conduit, and the deck control device can independently control the rope to be loosened or tightened.
[0012] The deck control device is integrated into the control device of the pouring conduit, and the deck control device can independently control the rope to be loosened or tightened.
[0013] In a possible implementation, the flower pipes are uniformly arranged at equal intervals on the surface cover framework.
[0014] In a possible implementation, a positioning device is further arranged at the outlet of the pouring conduit, and the positioning device is used to position the outlet of the pouring conduit to a pouring position.
[0015] In a possible implementation, the difference between the cross-sectional diameter of the surface cover after contraction and the diameter of the pouring conduit is less than or equal to a preset threshold.
[0016] In a possible implementation, the cross section of the surface cover after expansion is the same as the cross section shape of the pouring conduit.
[0017] In a possible implementation, the maximum cross-sectional diameter of the surface cover after expansion is 2-4 times the cross-sectional diameter of the pouring conduit.
[0018] In a possible implementation, the surface cover is a thickened waterproof material.
[0019] In a possible implementation, the outermost edge of the surface cover is wrapped with a soft protective layer.
[0020] In a possible implementation, the soft protective layer is a sponge or a rubber pad.
[0021] The technical scheme provided in the application can include the following beneficial effects:
[0022] The underwater self-protection concrete pouring protection equipment of the application comprises a pouring guide pipe, a protection device and an extension device; the protection device comprises a cover surface and a steel framework, the steel framework comprises a cover surface framework and an internal support framework; the extension device comprises a fixed clamp, a movable clamp, a guide rail and an extension control device, the extension control device comprises a deck control device and a fixed pulley; the cover surface framework is fixed under the cover surface, one end of the cover surface framework is hingedly connected to one end of the movable clamp; a flower pipe is arranged on the cover surface framework, the upper end of the flower pipe is connected to the output port of an underwater protection agent main pipe, and the lower end of the flower pipe can be immersed in water; the two ends of the internal support framework are respectively hingedly connected to the middle part of the cover surface framework and one end of the fixed clamp; the fixed clamp is welded on the outer wall of the pouring guide pipe close to the outlet and is hingedly connected with the internal support framework, the movable clamp is movably connected to the guide rail, the inner side of the guide rail is welded on the outer wall of the pouring guide pipe to vertically fix the guide rail on the pouring guide pipe, and the guide rail is located above the fixed clamp; the fixed pulley is welded on the outer wall of the pouring guide pipe, the fixed pulley is located between the fixed clamp and the guide rail, the deck control device is connected with the fixed pulley through a rope, the flow rate of water in the pouring process can be reduced, the concrete can be prevented from being washed away or the remaining amount can be prevented from being lower than the planned amount, and the environmental concentration of the underwater protection agent in the pouring process can be made suitable.
[0023] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS
[0024] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which like reference characters refer to like parts throughout the several views.
[0025] Figure 1 is a structural schematic view of the underwater self-protection concrete pouring protection equipment shown in the embodiment of the application;
[0026] Figure 2 is another structural schematic view of the underwater self-protection concrete pouring protection equipment shown in the embodiment of the application;
[0027] Figure 3 is another structural schematic view of the underwater self-protection concrete pouring protection equipment shown in the embodiment of the application;
[0028] Figure 4 is a local enlarged schematic view of A of the underwater self-protection concrete pouring protection equipment shown in the embodiment of the application.
[0029] Reference numerals: 100, pouring duct; 210, facing; 221, facing framework; 222, internal support framework; 310, fixed clamp; 320, movable clamp; 330, guide rail; 341, deck control device; 342, fixed pulley. DETAILED DESCRIPTION
[0030] Embodiments of the present application will be described in more detail by referring to the drawings. Although embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.
[0031] It should be understood that although the terms "first", "second", "third", etc. can be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.
[0032] In addition, "a plurality of" in the embodiments of the present application means two or more, and in view of this, "a plurality of" in the embodiments of the present application can also be understood as "at least two". "At least one" can be understood as one or more, for example, as one, two or more. For example, including at least one means including one, two or more, and does not limit which ones are included, for example, including at least one of A, B and C, then the included can be A, B, C, A and B, A and C, B and C, or A and B and C.
[0033] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the present application.
[0034] Unless otherwise defined, the terms "mounting", "connected", "connecting", "fixed", and the like, are to be construed as broad terms, for example, can be fixed connection, can also be detachable connection or integral; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0035] Concrete, refers to the engineering composite material that the cement is glued to the sandstone as a whole, which is widely used in foundation treatment engineering. In the process of new energy engineering construction, especially in the foundation treatment engineering such as wind turbine foundation, tower, pile foundation and so on, generally first mechanical hole and placement of reinforcement cage, and then pouring of concrete. The guide pipe method pouring underwater self-protection concrete refers to pouring a certain amount of underwater self-protection concrete into the specified area through the pouring guide pipe 100 to form a stable underwater protection structure. The guide pipe discharge port is a distance away from the construction site, and it is difficult to ensure the pouring quality of the underwater self-protection concrete when constructing in high flow rate underwater environment.
[0036] The guide pipe method pouring is a commonly used underwater concrete pouring method, especially suitable for the case where the water depth does not exceed a certain range (such as 15-25 m). During the pouring process, the guide pipe is generally 200-250 mm, and 25-30 cm is also used. The lower end of the guide pipe should be placed at a certain distance from the pouring site, generally 300 to 500 millimeters from the bottom surface. The guide pipe should be subjected to water pressure test and joint tensile test before use to ensure the sealing performance of the guide pipe. The pouring process should be continuous, and the pouring speed of the concrete should be controlled to avoid too fast or too slow. Observe the descending of the concrete in the guide pipe and the rising of the water level in the hole to prevent the guide pipe from lifting off the concrete surface or being buried too deep. Measure the depth of the concrete surface every certain time (such as half an hour), calculate the total length of the guide pipe, and ensure that the guide pipe outlet is buried in the concrete 3-5M. With the rising of the concrete, the guide pipe should be lifted and dismantled in time to ensure that the lower end of the guide pipe is always buried in the concrete, but it should not be too deep or too shallow. The depth of the guide pipe inserted into the concrete should be controlled within 2-4m, and should not be greater than 6m, and should not be less than 1m.
[0037] In the current pipe method pouring process on the sea, in order to ensure the safety of ship and machine equipment, the distance between the pipe outlet and the construction site is a certain distance, and when the construction is carried out in the high flow underwater environment, the continuous scouring effect of water flow during the pouring process before initial setting will cause the low setting efficiency and quality of the concrete. In order to improve the setting efficiency of the underwater self-protection concrete during the pouring process, a special underwater protective agent is often used, but due to the fact that the protective agent is mainly dropped outside the pouring pipe, it is affected by water depth, water flow and water quality, and the protective agent concentration at the pouring position cannot be ensured by increasing the protective agent dosage. Therefore, the protective agent concentration cannot be ensured during the pouring process, which also causes the low setting efficiency and quality of the concrete.
[0038] In view of the above problems, the embodiment of the present application provides a pouring protection device for underwater self-protection concrete, which can reduce the flow velocity during the pouring process, prevent the concrete from being washed away or the remaining amount from being lower than the planned amount, and make the environmental concentration of the underwater protective agent suitable during the pouring process.
[0039] The technical scheme of the embodiment of the present application is described in detail below with reference to the drawings.
[0040] Figure 1 Fig. 1 is a structural schematic diagram of the pouring protection device for underwater self-protection concrete shown in the embodiment of the present application.
[0041] Referring to Figures 1-4 The pouring protection device for underwater self-protection concrete comprises a pouring pipe 100, a protection device and an extension device.
[0042] The protection device comprises a cover 210 and a steel framework, and the steel framework comprises a cover framework 221 and an internal support framework 222. The extension device comprises a fixed clamp 310, a movable clamp 320, a guide rail 330 and an extension control device, and the extension control device comprises a deck control device 341 and a fixed pulley 342.
[0043] The cover framework 221 is fixed below the cover 210, and one end of the cover framework 221 is hinged to one end of the movable clamp 320. A flower pipe is arranged on the cover framework 221, the upper end of the flower pipe is connected to the output port of the underwater protective agent main pipe, and the lower end of the flower pipe can be immersed in water.
[0044] The two ends of the internal support framework 222 are respectively hinged to the middle part of the cover framework 221 and one end of the fixed clamp 310.
[0045] The fixed clamp 310 is welded on the outer wall of the pouring pipe 100 close to the outlet and is hinged to the internal support framework 222. The movable clamp 320 is movably connected to the guide rail 330, and the inner side of the guide rail 330 is welded on the outer wall of the pouring pipe 100, so that the guide rail 330 is vertically fixed on the pouring pipe 100, and the guide rail 330 is located above the fixed clamp 310.
[0046] The fixed pulley 342 is welded on the outer wall of the pouring guide pipe 100, and is located between the fixed clamp 310 and the guide rail 330. The deck control device 341 is connected with the fixed pulley 342 through a rope.
[0047] In the embodiment, the steel skeleton is a structural frame made of steel material, has the characteristics of high strength, light weight, corrosion resistance, good plasticity, etc., and can be usually used for supporting and stabilizing buildings or other structures. The steel skeleton can well support the entire protection device, avoid the decomposition of the protection device during use, and especially can well stabilize the protection device during the pouring of concrete at sea. The steel skeleton includes a cover skeleton 221 and an internal support skeleton 222. The cover skeleton 221 can be used for supporting the cover 210, and the cover 210 can be arranged below the cover skeleton 221, so that the cover 210 is more stable during pouring. The internal support skeleton 222 can be connected to the fixed clamp 310. The internal support skeleton 222 can be arranged in multiple numbers, and can connect the cover 210 and the fixed clamp 310, so as to avoid the relative movement of the fixed clamp 310 and the cover 210 during pouring, and affect the efficiency and quality of pouring.
[0048] Specifically, the telescopic device includes the fixed clamp 310 and the movable clamp 320. The fixed clamp 310 can be arranged at the lower part of the pouring guide pipe 100, and can be fixed on the pouring guide pipe 100. During pouring, the fixed clamp 310 can be used for supporting the unfolding and stabilization of the cover 210. The movable clamp 320 can be arranged at the upper end or the middle part of the pouring guide pipe 100, and can move up and down on the pouring guide pipe 100. The movable clamp 320 can also be used for supporting the cover 210. During pouring, the movable clamp 320 can change the unfolding range of the cover 210 by moving up and down on the pouring guide pipe 100, so as to change the different unfolding ranges of the cover 210 according to different actual needs, and ensure the stability of the pouring process.
[0049] The underwater self-protection concrete pouring equipment of the application comprises a pouring guide pipe 100, a protection device, and an extension device. The protection device comprises a cover 210 and a steel framework, and the steel framework comprises a cover framework 221 and an internal support framework 222. The extension device comprises a fixed clamp 310, a movable clamp 320, a guide rail 330, and an extension control device. The extension control device comprises a deck control device 341 and a fixed pulley 342. The cover framework 221 is fixed on the cover 210, and one end of the cover framework 221 is hinged to one end of the movable clamp 320. A flower pipe is arranged on the cover framework 221, the upper end of the flower pipe is connected to the output port of an underwater protection agent main pipe, and the lower end of the flower pipe can be immersed in water. The two ends of the internal support framework 222 are respectively hinged to the middle part of the cover framework 221 and one end of the fixed clamp 310. The fixed clamp 310 is welded on the outer wall of the pouring guide pipe 100 near the outlet and is hinged to the internal support framework 222. The movable clamp 320 is movably connected to the guide rail 330. The inner side of the guide rail 330 is welded on the outer wall of the pouring guide pipe 100, so that the guide rail 330 is vertically fixed on the pouring guide pipe 100, and the guide rail 330 is located above the fixed clamp 310. The fixed pulley 342 is welded on the outer wall of the pouring guide pipe 100, and is located between the fixed clamp 310 and the guide rail 330. The deck control device 341 is connected to the fixed pulley 342 through a rope, can reduce the flow rate of water flow in the pouring process, prevent the concrete from being washed away or the remaining amount from being lower than the planned amount, and can make the environmental concentration of the underwater protection agent suitable in the pouring process.
[0050] In a possible implementation, the deck control device 341 is integrated into the control device of the pouring guide pipe 100, and the deck control device 341 can independently control the rope to be loosened or tightened, so as to better reduce the flow rate of water flow in the protection device.
[0051] In a possible implementation, the flower pipes are uniformly arranged at equal intervals on the cover framework 221, and the diameters of the flower pipes can be the same. In the conduit pouring method, the flower pipe (also known as a steel flower pipe or an advanced small guide pipe) is a special tool mainly used for pre-supporting and grouting reinforcement in the tunnel engineering excavation construction process. The flower pipe is generally made of seamless steel pipe, and the diameter is usually 38-50 mm, and the length is determined according to the design requirements. The front end of the flower pipe is processed into a conical shape to facilitate the insertion into the hole, and a steel hoop is welded at the tail end to enhance the strength. The pipe body is provided with a grout overflow hole to enable the grout to smoothly enter the surrounding rock cracks or loose stratum during grouting. The number of flower pipes can be 4, 5, etc., which is not limited herein. In the pouring process, the flower pipe can be connected to the underwater protection agent main pipe, the underwater protection agent is pumped through the main pipe, the concentration of the underwater protection agent delivered can be controlled, and the environmental concentration of the underwater protection agent is ensured to be suitable in the underwater self-protection concrete pouring process.
[0052] In a possible implementation, a positioning device is further arranged at the outlet of the pouring pipe 100, and is used to position the outlet of the pouring pipe 100 to the pouring position, so that the lowering depth of the pouring pipe 100 can be better controlled.
[0053] In a possible implementation, the difference between the cross-sectional diameter of the cover 210 after contraction and the diameter of the pouring pipe 100 is less than or equal to a preset threshold, so that the underwater protective agent environment concentration in the underwater self-protecting concrete pouring process can be better ensured.
[0054] In a possible implementation, the cross section of the cover 210 after expansion is the same as the cross section of the pouring pipe 100, for example, both can be circular or elliptical.
[0055] In a possible implementation, the maximum cross-sectional diameter of the cover 210 after expansion is 2-4 times the cross-sectional diameter of the pouring pipe 100.
[0056] In a possible implementation, the cover 210 is a thickened waterproof material.
[0057] Specifically, the cover 210 can be a thickened waterproof cloth, for example, a thickened waterproof cloth made of polyvinyl chloride or a thickened waterproof cloth made of polyethylene, and the thickness of the waterproof cloth can be set according to actual needs, which is not limited here. The thickening can better prevent the underwater protective agent from leaking, and the use of polyethylene or polyvinyl chloride can prolong the service life of the cover 210.
[0058] In a possible implementation, the outermost edge of the cover 210 is wrapped with a soft protective layer, which can prevent the protective device from damaging the equipment by touching the bottom.
[0059] In a possible implementation, the soft protective layer is a sponge or a rubber pad.
[0060] Working principle: through the positioning device and the deck control device 341, the outlet of the pouring pipe 100 is positioned above the pouring position; before pouring the concrete, the elastic control device loosens the rope, so that the movable clamp 320 moves downward to the end of the guide rail 330, and the steel framework, the fixed clamp 310 and the hinge device support the cover 210 to expand; in the expanded state of the cover 210, the pouring position is poured through the pouring pipe 100, the underwater protective agent can be transported through the flower pipe, when the pouring is completed, the main pipe pump of the underwater protective agent is closed, and the elastic control device tightens the rope, so that the steel framework, the fixed clamp 310 and the hinge device contract the cover 210, and the movable clamp 320 returns to the top of the guide rail 330.
[0061] In summary, by reducing the flow rate of water in the protection device, the concrete can be prevented from being washed away or remaining below the planned amount, and secondly, by protecting the steel framework of the protection device, the underwater protection agent environment concentration during the underwater self-protection concrete pouring process can be ensured to be appropriate.
[0062] The underwater self-protection concrete pouring device of the present application comprises a pouring guide pipe 100, a protection device, and an extension device. The protection device comprises a cover 210 and a steel framework, and the steel framework comprises a cover framework 221 and an internal support framework 222. The extension device comprises a fixed clamp 310, a movable clamp 320, a guide rail 330, and an extension control device. The extension control device comprises a deck control device 341 and a fixed pulley 342. The cover framework 221 is fixed below the cover 210, and one end of the cover framework 221 is hingedly connected to one end of the movable clamp 320. A flower pipe is arranged on the cover framework 221, the upper end of the flower pipe is connected to the output port of the underwater protection agent main pipe, and the lower end of the flower pipe can be immersed in water. The two ends of the internal support framework 222 are respectively hingedly connected to the middle part of the cover framework 221 and one end of the fixed clamp 310. The fixed clamp 310 is welded on the outer wall of the pouring guide pipe 100 near the outlet and is hingedly connected to the internal support framework 222. The movable clamp 320 is movably connected to the guide rail 330. The inner side of the guide rail 330 is welded on the outer wall of the pouring guide pipe 100, so that the guide rail 330 is vertically fixed on the pouring guide pipe 100, and the guide rail 330 is located above the fixed clamp 310. The fixed pulley 342 is welded on the outer wall of the pouring guide pipe 100, and is located between the fixed clamp 310 and the guide rail 330. The deck control device 341 is connected to the fixed pulley 342 through a rope, so as to reduce the flow rate of water during pouring, prevent the concrete from being washed away or remaining below the planned amount, and make the underwater protection agent environment concentration appropriate during pouring.
[0063] The solutions of the present application have been described in detail above with reference to the accompanying drawings. In the above-described embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments. It should also be known by those skilled in the art that the actions and modules involved in the specification are not necessarily required by the present application. In addition, it can be understood that the steps in the method embodiments of the present application can be adjusted, combined and reduced in sequence according to actual needs, and the modules in the device embodiments of the present application can be combined, divided and reduced according to actual needs.
[0064] Having described various embodiments of the application, it is to be understood that the above description is meant not to limit and not to encompass all of the possible embodiments. Many modifications and variations of this application can be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. It is intended that the scope of the application be defined by the scope of the patent and by the claims as allowed by the patent office, which can include adaptations based on the description, equivalents, and / or substitutions of elements individually or collectively to the entire disclosure.
Claims
1. A pouring protection device for underwater self-defending concrete, characterized in that, The utility model relates to a pouring guide pipe, a protection device and a telescopic device. The protection device comprises a cover and a steel framework, and the steel framework comprises a cover framework and an internal support framework. The telescopic device comprises a fixed clamp, a movable clamp, a guide rail and a telescopic control device, and the telescopic control device comprises a deck control device and a fixed pulley. The cover framework is fixed under the cover, and one end of the cover framework is hingedly connected to one end of the movable clamp. The other ends of the internal support framework are hingedly connected to the middle part of the cover framework and one end of the fixed clamp respectively. The fixed clamp is welded to the outer wall of the pouring guide pipe near the outlet and is hingedly connected to the internal support framework. The movable clamp is movably connected to the guide rail, and the inner side of the guide rail is welded to the outer wall of the pouring guide pipe to vertically fix the guide rail on the pouring guide pipe. The fixed pulley is welded to the outer wall of the pouring guide pipe and is located between the fixed clamp and the guide rail.
2. The apparatus of claim 1, wherein, The deck control device is connected to the fixed pulley through a rope.
3. The apparatus of claim 1, wherein, The deck control device is integrated into the control device of the pouring guide pipe, and the deck control device can independently control the rope to be loosened or tightened.
4. The apparatus of claim 1, wherein, The flower pipes are uniformly and equally spaced on the cover framework.
5. The apparatus of claim 1, wherein, A positioning device is arranged at the outlet of the pouring guide pipe to position the outlet of the pouring guide pipe to a pouring position.
6. The apparatus of claim 5, wherein, The difference between the cross-sectional diameter of the cover after contraction and the diameter of the pouring guide pipe is less than or equal to a preset threshold.
7. The apparatus of claim 6, wherein, The cross section of the cover after expansion is the same as the cross-sectional shape of the pouring guide pipe.
8. The apparatus of any one of claims 1 to 7, wherein, The maximum cross-sectional diameter of the cover after expansion is 2-4 times the cross-sectional diameter of the pouring guide pipe.
9. The apparatus of claim 8, wherein, The cover is made of thickened waterproof material.
10. The apparatus of claim 9, wherein, The outermost edge of the cover is wrapped with a soft protective layer. The soft protective layer is sponge or rubber pad.