A detachable plastering squeegee for building exterior walls
By designing guide plates and collection boxes on the exterior wall plastering scraper, the problem of material flowing and falling off the scraper is solved, enabling the collection and reuse of materials and improving construction efficiency and plastering quality.
Patent Information
- Application Number
- CN202521298125.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-30
- Estimated Expiration
- 2035-06-24
AI Technical Summary
When using traditional exterior wall plastering squeegees, excess material on the squeegee tends to flow and fall, polluting the ground and being difficult to collect and reuse effectively.
A detachable plastering scraper for building exterior walls was designed, equipped with a guide plate and a raw material collection box. The guide plate guides excess raw material into the collection box, and the raw material is reused through a pusher component and a corner plastering component.
It effectively prevents raw materials from falling and contaminating the ground, while also enabling the collection and reuse of raw materials, thus improving construction efficiency and plastering quality.
Smart Images

Figure CN224431923U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastering scraper technology, and in particular to a detachable plastering scraper for building exterior walls. Background Technology
[0002] Exterior wall plastering is an important process in building decoration and renovation projects. It refers to applying a mortar mixture made of cementitious materials (such as cement and lime), aggregates (such as sand and stone chips), water, and additives in a certain proportion to the surface of the building's exterior walls. This forms a protective, decorative, and functional covering layer. Exterior wall plastering is one of the core processes in building exterior wall decoration and renovation. By applying a mortar layer to the wall surface, it achieves multiple values such as protection, decoration, and functional enhancement. It plays an irreplaceable role in the safety, durability, and user experience of the building. A high-quality plaster layer can extend the service life of the exterior wall finish and reduce the frequency of repairs due to cracking and peeling. A smooth plaster layer can reduce the accumulation of dust and water caused by unevenness on the exterior wall surface and reduce indoor noise reflection (for example, a rough textured surface can absorb some sound waves). An insulating plaster layer can reduce indoor temperature fluctuations and improve living comfort. Traditional exterior wall plastering scrapers often encounter the problem of excessive material on the scraper when plastering walls, causing the material to flow to the sides of the scraper and eventually fall off the scraper, contaminating the ground, which is inconvenient to use. Summary of the Invention
[0003] To overcome the technical defects of the existing technology, this utility model provides a detachable building exterior wall plastering scraper, which can guide excess material on the scraper into the material collection box.
[0004] The technical solution adopted by this utility model is as follows: it includes a first scraper, with guide plates fixedly installed at both ends of the first scraper, and a raw material collection box movably installed on the back of the first scraper. The raw material collection box can guide excess raw material on the scraper into the raw material collection box through the guide plates. The raw material collection box is movably installed on the back of the first scraper through an installation mechanism. A pusher component and a handle are slidably installed on one side of the raw material collection box. A corner plastering component is fixedly installed on one side of the raw material collection box near the handle. The corner plastering component can perform plastering operations on the corners.
[0005] Preferably, in order to enable the pushing assembly to push the raw material onto the surface of the first scraper, a square groove is fixedly provided on one side surface of the first scraper.
[0006] Preferably, in order to push the pusher plate, the pusher assembly includes a stretching head, a push rod is fixedly connected to one side of the stretching head, a pusher plate is fixedly connected to one end of the push rod, and limit plates are fixedly installed on both sides of the pusher plate.
[0007] Preferably, in order to push the raw material in the raw material collection box back onto the surface of the first scraper, the push rod is slidably installed inside the raw material collection box, and one end of the push rod that is fixedly connected to the stretching head passes through the inner wall of one side of the raw material collection box. The push plate is movably installed in the square groove, and the two limiting plates are in contact with the inner wall of one side of the raw material collection box.
[0008] Preferably, in order to rotate the rotating rod, the corner plastering assembly includes a rotating seat, on which the rotating rod is rotatably mounted. The rotating rod is rotatably mounted on the rotating seat via a damping shaft, and one end of the rotating rod is fixedly connected to a second scraper.
[0009] Preferably, in order to perform plastering operations on the corners of the walls, the rotating rod is fixedly installed on one side surface of the raw material collection box, and the rotating rod extends to the outside of the raw material collection box.
[0010] Preferably, in order to guide excess raw materials into the raw material collection box, the lower end of the raw material collection box is fixedly provided with an opening, and the inclined ends of the two guide plates correspond to the lower opening of the raw material collection box.
[0011] Preferably, in order to allow the raw material collection box to be freely disassembled, the mounting mechanism includes, but is not limited to, bolts and pins.
[0012] The beneficial effects of this utility model are as follows: This utility model uses a guide plate on the first scraper to guide excess material on the first scraper into the material collection box, preventing excess material from falling to the ground and polluting it. When enough material accumulates in the material collection box, the stretching head is pulled, and the pusher plate, under the action of the push rod, squeezes the material in the material collection box. Under pressure, the material moves to the surface of the pusher plate. Then, the stretching head is pushed again, and the material in the material collection box returns to the surface of the first scraper under the action of the pusher plate. This utility model can not only collect excess material on the scraper and prevent it from falling to the ground and polluting it, but also push the collected material back to the surface of the first scraper, realizing the reuse of the material. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the material pushing component structure of this utility model;
[0015] Figure 3 This is a schematic diagram of the internal structure of the raw material collection box of this utility model;
[0016] Figure 4 This is a schematic diagram of the wall corner plastering component of this utility model;
[0017] Figure 5 This is a schematic diagram of the first scraper structure of this utility model.
[0018] Explanation of reference numerals in the attached drawings: 1. First scraper; 2. Guide plate; 3. Raw material collection box; 4. Pushing assembly; 401. Stretching head; 402. Push rod; 403. Pushing plate; 404. Limiting plate; 5. Handle; 6. Corner plastering assembly; 601. Rotating seat; 602. Rotating rod; 603. Second scraper; 604. Damping shaft; 7. Installation mechanism; 8. Square groove. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings:
[0020] like Figures 1-5 As shown, this embodiment provides a detachable exterior wall plastering scraper, including a first scraper 1. Guide plates 2 are fixedly installed at both ends of the first scraper 1. A material collection box 3 is movably installed on the back of the first scraper 1. The material collection box 3 is movably installed on the back of the first scraper 1 via an installation mechanism 7. A pusher assembly 4 and a handle 5 are slidably installed on one side of the material collection box 3. A corner plastering assembly 6 is fixedly installed on one side of the material collection box 3 near the handle 5. The guide plates 2 can guide excess mortar and prevent it from flowing randomly. The material collection box 3 is flexibly installed on the back of the first scraper 1 via the installation mechanism 7 and can collect the mortar guided by the guide plates 2. When enough material accumulates in the material collection box 3, the pusher assembly 4 can be pushed to push the material back onto the surface of the first scraper 1. When encountering a corner, the corner plastering assembly 6 is used for targeted plastering to ensure the corner plastering effect.
[0021] As a technical optimization solution of this utility model, specifically as follows: Figure 2 and Figure 3As shown, a square groove 8 is fixedly opened on one side surface of the first scraper 1. The pushing assembly 4 includes a stretching head 401, a push rod 402 is fixedly connected to one side of the stretching head 401, a pushing plate 403 is fixedly connected to one end of the push rod 402, and limiting plates 404 are fixedly installed on both sides of the pushing plate 403. The push rod 402 is slidably installed inside the raw material collection box 3, and the end of the push rod 402 that is fixedly connected to the stretching head 401 penetrates through one side inner wall of the raw material collection box 3. The pushing plate 403 is movably installed in the square groove 8, and the two limiting plates 404 are in contact with one side inner wall of the raw material collection box 3. During the plastering process, excess raw material will be guided along the first scraper 1. The material flows into the raw material collection box 3. When the material in the collection box accumulates to a certain level, the stretching head 401 is pulled. Since the push rod 402 is slidably installed inside the raw material collection box 3, and one end passes through the inner wall of one side of the collection box and is connected to the stretching head 401, pushing the stretching head 401 will cause the push rod 402 to slide inside the collection box. Under the action of the push rod 402, the push plate 403 squeezes the material in the raw material collection box 3. Under the action of pressure, the material moves to the surface of the push plate 403. At this time, the stretching head 401 is pushed again, and the material in the raw material collection box 3 returns to the surface of the first scraper 1 under the action of the push plate 403, realizing the reuse of the material in the raw material collection box 3.
[0022] As a technical optimization solution of this utility model, specifically as follows: Figure 4 As shown, the corner plastering assembly 6 includes a rotating base 601, on which a rotating rod 602 is rotatably mounted. The rotating rod 602 is rotatably mounted on the rotating base 601 via a damping shaft 604. One end of the rotating rod 602 is fixedly connected to a second scraper 603. The rotating rod 602 is fixedly mounted on one side surface of the material collection box 3, extending to the outside of the material collection box 3. When plastering the corner of an exterior wall, due to the right angle or other special shapes of the corner, ordinary scrapers are difficult to apply. During the plastering operation, the corner plastering component 6 can be used. Its rotating rod 602 is rotatably mounted on the rotating seat 601 through the damping shaft 604, and the other end is fixed to the side of the material collection box 3 and extends to the outside. The operator can manually rotate the rotating rod 602 to adjust the second scraper 603 to a suitable angle so as to tightly adhere to the corner. With the help of the second scraper 603, the corner plastering can be completed efficiently, ensuring the quality of plastering. The damping shaft 604 can keep the second scraper 603 stably at the adjusted angle.
[0023] As a technical optimization solution of this utility model, specifically as follows: Figure 1As shown, the lower end of the raw material collection box 3 is fixedly provided with an opening, and the inclined ends of the two guide plates 2 correspond to the lower opening of the raw material collection box 3. The installation mechanism 7 includes, but is not limited to, bolts and pins. During plastering operations, excess mortar is guided by the guide plates 2. Because their inclined ends correspond to the lower opening of the raw material collection box 3, the mortar can fall accurately into the raw material collection box 3. The raw material collection box 3 can be flexibly disassembled and assembled through the installation mechanism 7 such as bolts or pins, which is convenient for subsequent cleaning or replacement.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.
Claims
1. A detachable building exterior wall plastering trowel, comprising a first trowel (1), characterized in that: The first scraper (1) is fixedly installed with guide plates (2) at both ends. The back of the first scraper (1) is movably installed with a raw material collection box (3). The raw material collection box (3) is movably installed on the back of the first scraper (1) through an installation mechanism (7). A pusher assembly (4) and a handle (5) are slidably installed on one side of the raw material collection box (3). A corner plastering assembly (6) is fixedly installed on one side of the raw material collection box (3) near the handle (5).
2. The detachable trowel blade for architectural exterior finishing according to claim 1, wherein: A square groove (8) is fixedly opened on one side surface of the first scraper (1).
3. A demountable building exterior wall trowel blade according to claim 2, wherein: The pusher assembly (4) includes a stretching head (401), a push rod (402) is fixedly connected to one side of the stretching head (401), a pusher plate (403) is fixedly connected to one end of the push rod (402), and limit plates (404) are fixedly installed on both sides of the pusher plate (403).
4. The demountable trowel for architectural exterior walls according to claim 3, wherein: The push rod (402) is slidably installed inside the raw material collection box (3), and one end of the push rod (402) is fixedly connected to the stretching head (401) and penetrates through the inner wall of one side of the raw material collection box (3). The push plate (403) is movably installed in the square groove (8), and the two limiting plates (404) are in contact with the inner wall of one side of the raw material collection box (3).
5. The detachable trowel blade for architectural exterior finishing according to claim 1, wherein: The corner plastering assembly (6) includes a rotating seat (601), on which a rotating rod (602) is rotatably mounted. The rotating rod (602) is rotatably mounted on the rotating seat (601) via a damping shaft (604), and a second scraper (603) is fixedly connected to one end of the rotating rod (602).
6. The demountable trowel for architectural exterior walls according to claim 5, wherein: The rotating rod (602) is fixedly installed on one side surface of the raw material collection box (3), and the rotating rod (602) extends to the outside of the raw material collection box (3).
7. The demountable architectural exterior wall trowel blade of claim 1, wherein: The lower end of the raw material collection box (3) is fixedly provided with an opening, and the inclined ends of the two guide plates (2) correspond to the lower opening of the raw material collection box (3).
8. The demountable architectural exterior wall trowel blade of claim 1, wherein: The installation mechanism (7) includes, but is not limited to, bolts and pins.