Magnesium phosphate cement surface finishing tool
By designing a finishing tool that combines a defoaming roller and a finishing roller, the problem of separating the release of air bubbles and the finishing process during the setting of magnesium phosphate cement was solved, achieving high construction efficiency and quality assurance.
Patent Information
- Application Number
- CN202422922933.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In existing technologies, magnesium phosphate cement requires different tools for releasing air bubbles during the setting process and for surface finishing, resulting in low construction efficiency and increased labor costs.
A dough-forming tool combining a defoaming roller and a dough-forming roller has been designed, which integrates them into one unit through a retractable push rod, enabling simultaneous bubble release and dough-forming.
It improves construction efficiency, saves manpower, ensures the setting and hardening quality of magnesium phosphate cement, shortens construction time, and avoids surface unevenness and cracks.
Smart Images
Figure CN223813922U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of magnesium phosphate cement setting and surface finishing treatment, and particularly relates to a magnesium phosphate cement surface finishing tool. BACKGROUND
[0002] Magnesium phosphate cement (MPC) is composed of phosphate, magnesium oxide and additives in a certain proportion, and is a new type of cementing material based on acid-base neutralization reaction and hardened by chemical action. This kind of cementing material has the characteristics of fast hardening, early strength, high bonding strength, small volume deformation, good wear resistance and wide environmental adaptability, and has broad application prospects in the fields of engineering rapid repair, rapid reinforcement and remediation, outburst prevention technology, harmful substance solidification and national defense engineering construction. During the hardening process of magnesium phosphate cement, gas is released. The gas release will form bubbles in the cement slurry. With the increase of the amount of phosphate, the amount of bubble release will also increase. If these bubbles are not discharged in time, they will remain in the cement slurry. The existence of bubbles will significantly reduce the overall density of concrete, thereby directly affecting the stability and durability of the structure. At present, a defoaming roller is used to release the bubbles on the surface of the cement, but after the bubbles are released, the surface of the cement will become uneven, and the cement will also produce a certain shrinkage force during setting, which will cause cracks on the surface. Therefore, after the bubbles are released, a scraper or a spatula is used for surface finishing treatment to avoid unevenness and cracks on the surface of the cement. Since the initial setting and final setting times of magnesium phosphate cement are very short, the bubble release and surface finishing treatment are carried out in two steps using different tools, which is low in efficiency and cannot ensure that the bubble release and surface finishing treatment are completed before the magnesium phosphate cement is completely set, thereby affecting the subsequent setting and hardening quality of the magnesium phosphate cement. Moreover, the bubble release and surface finishing treatment are carried out in two steps, which requires at least two people to cooperate, thereby increasing the labor cost. SUMMARY
[0003] The utility model aims at providing a magnesium phosphate cement surface finishing tool to solve the problem that the existing method releases bubbles and carries out surface finishing treatment in two steps using different tools, which affects the construction efficiency and increases the labor cost.
[0004] In order to solve the above problems, the technical scheme provided is as follows:
[0005] A magnesium phosphate cement surface finishing tool comprises a defoaming roller and a surface finishing light rod, the defoaming roller and the surface finishing light rod are arranged at intervals, two connecting rods are fixedly connected between the two ends of the rotating shaft of the defoaming roller and the surface finishing light rod, a cross bar is fixedly connected in the middle of the two connecting rods, an upward extending top rod is fixedly connected in the center of the cross bar, and a telescopic push rod is hinged to the top end of the top rod.
[0006] The basic principle of the above technical solution is that when the magnesium phosphate cement is setting, the device is placed on the cement, the telescopic push rod is adjusted to the appropriate length, the telescopic push rod is pushed to make the defoaming roller and the surface collecting light roll on the cement, the defoaming roller rolls to release the bubbles in the cement, and the surface collecting light roll rolls to collect the surface of the cement.
[0007] The beneficial effects of the above technical solution are that compared with the existing magnesium phosphate cement setting process which releases bubbles and collects surface by using different tools for two-step processing, the defoaming roller and the surface collecting light roll are combined into one body, only one person needs to operate the telescopic push rod to make the defoaming roller and the surface collecting light roll roll, which saves manpower, and at the same time, the defoaming roller rolls over the position to release bubbles first, and then the surface collecting light roll can roll over to collect the surface, which shortens the construction time, improves the construction efficiency, and ensures the setting and hardening quality of the magnesium phosphate cement.
[0008] Further, the telescopic push rod is inclined. The inclined telescopic push rod is more convenient to push, and since the telescopic push rod is hinged to the top end of the top rod, the inclination angle can be adjusted at will.
[0009] Further, the end of the telescopic push rod is fixedly connected with a push handle, and the push handle is sleeved with a non-slip rubber sleeve. Pushing the telescopic push rod through the push handle can save effort, and the non-slip rubber sleeve can prevent the worker's hand from slipping off the push handle during work, affecting continuous work.
[0010] Further, the telescopic push rod comprises a primary rod and a secondary cylinder, one end of the primary rod is hinged to the top end of the top rod, the other end of the primary rod is sleeved in the secondary cylinder, a plurality of evenly arranged accommodation grooves are arranged on the primary rod, a clamping block is fixedly connected in each accommodation groove through a spring, the secondary cylinder is provided with a clamping hole near the end of the primary rod, and the clamping block can be popped out and clamped in the clamping hole when the primary rod slides in the secondary cylinder. When the primary rod and the secondary cylinder are combined to the appropriate length for work, the clamping block on the primary rod can be popped out and clamped in the clamping hole of the secondary cylinder, so that the length of the combination of the primary rod and the secondary cylinder is fixed. When the length of the telescopic push rod needs to be adjusted, the clamping block is pressed back into the accommodation groove and the primary rod is pulled to slide in the secondary cylinder, and the length of the combination of the primary rod and the secondary cylinder can be adjusted by repeating the above operation.
[0011] Further, the push handle is threadedly connected with the end of the secondary cylinder away from the primary rod. The threadedly connected push handle can be easily detached.
[0012] Further, the defoaming roller and the surface collecting light roll have the same diameter and are at the same horizontal height. When the defoaming roller and the surface collecting light roll work at the same time, they can maintain the same efficiency and avoid the position where bubbles are released without surface collecting treatment. Attached Figure Description
[0013] Figure 1 This is a front view structural diagram of the finishing tool;
[0014] Figure 2 This is a top view of the finishing tool.
[0015] Figure 3 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle;
[0016] The reference numerals in the accompanying drawings of the instruction manual include: 1. Defoaming roller; 2. Finishing roller; 3. Rotating shaft; 4. Connecting rod; 5. Horizontal bar; 6. Top rod; 7. Telescopic push rod; 7. First-stage rod; 71. Second-stage cylinder; 72. Placement groove; 73. Spring; 74. Locking block; 75. Locking hole; 76. Push handle; 8. Anti-slip rubber sleeve; 9. Detailed Implementation
[0017] The following detailed description illustrates the specific implementation method:
[0018] The basic implementation examples are as follows: Figures 1-3 As shown:
[0019] A tool for finishing magnesium phosphate cement surfaces, such as Figure 1 As shown, it includes a defoaming roller 1 and a finishing roller 2. The defoaming roller 1 and the finishing roller 2 have the same diameter and are at the same horizontal height. The defoaming roller 1 and the finishing roller 2 are arranged at a interval of 0.5 meters. Figure 2 As shown, two connecting rods 4 are fixedly connected between the two ends of the rotating shaft 3 of the defoaming roller 1 and the finishing roller 2. A crossbar 5 is fixedly connected between the two connecting rods 4, and the crossbar 5 is perpendicular to the two connecting rods 4. A top rod 6 extending upward is fixedly connected to the center of the crossbar 5. A telescopic push rod 7 is hinged to the top of the top rod 6 and is inclined. The telescopic push rod 7 includes a primary rod 71 and a secondary cylinder 72. One end of the primary rod 71 is hinged to the top of the top rod 6, and the other end of the primary rod 71 is sleeved in the secondary cylinder 72. Figure 3 As shown, the first-stage rod 71 has five evenly arranged mounting slots 73. Each mounting slot 73 is fixedly connected to a locking block 75 by a spring 74. The second-stage cylinder 72 has a locking hole 76 near the end of the first-stage rod 71. When the first-stage rod 71 slides in the second-stage cylinder 72, when the locking block 75 passes through the locking hole 76, the locking block 75 can be ejected from the mounting slot 73 under the action of the spring 74 and locked in the locking hole 76, so that the length of the telescopic push rod 7 of the combination of the first-stage rod 71 and the second-stage cylinder 72 is fixed. The end of the second-stage cylinder 72 away from the first-stage rod 71 is threadedly connected to a push handle 8, and the push handle 8 is covered with an anti-slip rubber sleeve 9.
[0020] The specific implementation process is as follows:
[0021] When the magnesium phosphate cement is setting, the device is placed on the cement, the clamping block 75 at the clamping hole 76 is pressed back into the accommodation groove 73 and the first level rod 71 is pulled to make the second level cylinder 72 slide away, so that the telescopic push rod 7 can be adjusted to the appropriate length, then the clamping block 75 of the appropriate length can be popped out of the accommodation groove 73 under the action of the spring 74 and clamped in the clamping hole 76, so that the length of the telescopic push rod 7 combined by the first level rod 71 and the second level cylinder 72 is fixed. The telescopic push rod 7 is pushed to make the defoaming roller 1 and the surface collecting light stick 2 roll on the cement, the defoaming roller 1 releases the bubbles in the cement where it rolls first, and the subsequent surface collecting light stick 2 rolls to collect the surface of the cement setting surface, compared with using a scraper, a spatula and other tools to collect the surface, the surface collecting light stick 2 continuously rolls on the magnesium phosphate cement surface layer, so that the surface layer color is uniform, avoiding the phenomenon of "floating black" (floating black is a phenomenon that a black additive floats up). The device combines the defoaming roller 1 and the surface collecting light stick 2 into one, only one person needs to operate the telescopic push rod 7 to make the defoaming roller 1 and the surface collecting light stick 2 roll, saving manpower, and the defoaming roller 1 and the surface collecting light stick 2 roll on the cement, the defoaming roller 1 releases the bubbles in the cement where it rolls first, then the surface collecting light stick 2 can roll to collect the surface, shortening the construction time, improving the construction efficiency and ensuring the setting and hardening quality of the magnesium phosphate cement.
[0022] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.
Claims
1. A finishing tool for magnesium phosphate cement, comprising a defoaming roller and a finishing roller, characterized in that: The defoaming roller and the finishing roller are arranged alternately. Two connecting rods are fixedly connected between the two ends of the rotating shaft of the defoaming roller and the finishing roller, respectively. A crossbar is fixedly connected between the two connecting rods. A top rod extending upward is fixedly connected to the center of the crossbar. A telescopic push rod is hinged to the top of the top rod. The telescopic push rod includes a primary rod and a secondary cylinder. One end of the primary rod is hinged to the top of the top rod, and the other end of the primary rod is sleeved in the secondary cylinder. The primary rod has several evenly arranged placement grooves. A locking block is fixedly connected to the placement groove by a spring. The secondary cylinder has a locking hole near the end of the primary rod. When the primary rod slides in the secondary cylinder, the locking block can pop out and lock into the locking hole.
2. The magnesium phosphate cement finishing tool according to claim 1, characterized in that: The retractable push rod is tilted.
3. The magnesium phosphate cement finishing tool according to claim 2, characterized in that: The end of the retractable push rod is fixedly connected to a push handle, and the push handle is covered with an anti-slip rubber sleeve.
4. A magnesium phosphate cement finishing tool according to claim 3, characterized in that: The push handle is threadedly connected to the end of the secondary cylinder furthest from the primary rod.
5. A magnesium phosphate cement finishing tool according to claim 4, characterized in that: The defoaming roller and the finishing roller have the same diameter and are at the same horizontal height.