Water seepage and falling prevention structure of building outer wall and construction method

Abstract

The construction method sequentially comprises the following steps of a) wall surface cleaning, b) first painting and repairing, c) adhesive force stainless steel mesh laying, d) stainless steel mesh fixing, e) ceramic waterproof treatment and f) outer wall coating layer coating. After the wall surface is fully paved with the stainless steel mesh for fixation, a binder ceramic is permeated into the stainless steel mesh to be bonded with the original wall surface and the repairing surface, and the ceramic layer is also well bonded with the putty layer on the outer side, so that the adhesive force between the inner layer and the outer layer is effectively improved, the falling risk is reduced, and the fixing reliability is good; and the specific structure of the stainless steel mesh enables the adhesive force to be stronger than that of other structures made of common materials or metal materials, the outer wall surface is stably attached to the ceramic bonding layer with the stainless steel mesh lining, cracking and water seepage of the outer wall surface are effectively prevented, and the water seepage problem of old buildings is solved.

Description

Technical Field

[0001] The invention relates to the field of building exterior walls, in particular to a building exterior wall anti-seepage and anti-falling structure and a construction method. Background Art

[0002] In order to improve the thermal insulation performance of buildings and achieve energy conservation and emission reduction effects, the country has promoted the application of exterior wall insulation structures in recent years. The exterior wall insulation layer generally uses polystyrene particle insulation mortar, inorganic lightweight aggregate insulation mortar, polystyrene board, glass microbead rock wool board, polyurethane board and other types of heat-resistant and heat-insulating materials. The use of these insulation materials has improved the thermal insulation performance of various buildings and achieved energy conservation and emission reduction effects.

[0003] However, the insulation layer material is sandwiched between the outer wall and the inner wall. Since the insulation layer is mostly made of foamed lightweight materials, the inner walls are made of various brick walls, concrete walls, steel structures and other materials with relatively high hardness. The outer wall is also a putty layer and a paint layer with poor adhesion to the insulation layer material. The adhesion between the three main layers is relatively small. In addition, the thermal expansion coefficients of the inner wall, insulation layer, and outer wall are also quite different. With the thermal expansion and contraction during the season change, a large number of problems such as cracking, falling off, and water seepage have occurred in recent years.

[0004] The cracking, peeling and water seepage of the exterior wall and insulation layer not only affect the overall appearance, but also seriously affect the daily life of the residents and cause serious safety hazards. Traditional restoration removes all the original exterior wall layers to the structural surface, then cleans the wall and repaints it. Since most of the buildings to be repaired are high-rise buildings, it is impossible to set up external scaffolding for closed construction, and only hanging baskets can be used for construction. When removing the original wall paint layer, the following problems exist: a large amount of dust is generated during cutting, shoveling or chiseling, forming on-site dust, which seriously affects the daily life of residents and pollutes the environment. The shoveling and chiseling tools generate a lot of vibration and noise during construction; after the exterior wall and insulation layer are removed, the inner wall is directly exposed to the outside for a long time, causing water seepage in rainy and snowy weather; before the later repainting, the wall needs to be cleaned and watered, which also increases the risk of water seepage, and it is difficult to ensure the timely supply of vertical transportation of materials for large-scale painting, which results in construction joints during construction, thus burying the hidden dangers of wall cracking and hollowing.

[0005] Chinese patent CN214144208U proposes an exterior wall insulation board repair structure, which uses a T-shaped insulation filling column with a first cylinder and a second cylinder, anchor bolts, an adhesive layer, a reinforcement layer, etc. to repair insulation and exterior wall structures. This repair method avoids environmental pollution and resource waste caused by direct removal, but does not solve the problem of low adhesion between the new adhesive layer, interface layer, reinforcement layer and finishing layer and the insulation layer. It only improves the facade problem within 2 to 3 years after repair, but after 2-3 years of use, cracking, falling off, water seepage and other problems will reappear. The problems of cracking, falling off and water seepage are not fundamentally solved, especially the adhesion between the new exterior wall and the original exterior wall, and between the original exterior wall and the insulation layer has not been improved, which can easily cause secondary falling off. In addition, the cracking problem caused by thermal expansion and contraction has not been effectively improved, resulting in water seepage and other problems not being improved.

[0006] Chinese patent CN217974888U discloses a thermal insulation and waterproof structure based on the reconstruction of the exterior wall of an old building, including a wall, a fixing bolt, a leveling layer, a thermal insulation plastic foam board, a board, an adhesive layer, and a decorative board. A leveling layer is arranged on one side of the wall, a thermal insulation plastic foam board is arranged on one side of the leveling layer, a board is arranged on one side of the thermal insulation plastic foam board, the board includes a waterproof layer, a fireproof layer, and a sound insulation cotton layer, an adhesive layer is arranged on one side of the board, a decorative board is arranged on one side of the adhesive layer, the leveling layer, the thermal insulation plastic foam board , the plate is fixedly connected to the wall by fixing bolts. The utility model improves the thermal insulation performance by arranging a thermal insulation plastic foam plate, and has a light texture, convenient raw material source, and low price. By arranging a waterproof layer, it can avoid indoor splashing water penetration and has a good waterproof effect. However, due to the use of thermal insulation plastic foam plates, plates, adhesive layers, decorative plates and other structures, a large number of cutting, hoisting and other operations are required according to site needs, which is not convenient for construction; and the leveling layer, thermal insulation plastic foam plate, and plate are only fixedly connected to the wall by fixing bolts, so the fixing reliability is poor. Summary of the invention

[0007] The purpose of the present invention is to solve the problems in the prior art and to propose a water seepage and anti-falling structure for building exterior walls and a construction method, which can be easy to construct, has good fixing reliability, and can completely improve the problems of wall cracking, falling off and water seepage, and the construction process is environmentally friendly and pollution-free.

[0008] To achieve the above-mentioned purpose, the present invention proposes a water seepage and anti-falling structure for building exterior walls, comprising a coating primer layer, a ceramic waterproof layer and an exterior wall paint layer arranged in sequence from the inside to the outside, wherein a reinforcing net is arranged in the ceramic waterproof layer, and the reinforcing net is fixedly connected to the inner wall through a plurality of fixing parts, and the exterior wall paint layer is fixedly connected to the coating primer layer by bonding through the ceramic waterproof layer; The reinforcing mesh is a stainless steel mesh or is made by winding stainless steel wire on site; Particles are embedded between the ceramic waterproof layer and the exterior wall paint layer; Before applying the primer layer, a wall treatment device is used to clean loose parts and dust on the wall; The construction method of the anti-seepage and anti-falling structure of the building exterior wall comprises the following steps in sequence: a) Wall cleaning: Use the wall treatment device to clean the loose parts and dust on the wall, and then apply primer to the wall to seal the bottom; b) First coat of plastering and repairing: plaster the loose parts to form a repair layer, the thickness of which should be flush with the original wall surface; c) Laying the adhesion stainless steel mesh: Lay the stainless steel mesh on the outside of the wall and leave expansion joints; d) Stainless steel mesh fixing: The stainless steel mesh is fixed by a number of fixings, which are embedded in the inner wall structure layer; e) Ceramic treasure waterproof treatment: Use ceramic treasure adhesive to apply to the wall surface, and ceramic treasure penetrates the stainless steel mesh to bond with the original wall surface and the repair surface, and covers the stainless steel mesh and fixings, and then spray the particles on the ceramic treasure bonding layer. After the ceramic treasure bonding layer is completely dry, cut the expansion joint all the way to the inner wall structure layer, and then fill the expansion joint with weather-resistant glue; f) External wall coating layer: apply anti-cracking putty, hang fiber mesh, apply anti-alkali primer, after the primer is completely dry, apply the external wall middle layer elastic paint, after the middle layer elastic paint is completely dry, spray multi-color real stone paint, after the multi-color real stone paint is completely dry, apply external wall finishing paint; Preferably, the fixing member is an expansion screw, which presses and fixes the stainless steel mesh through a stainless steel gasket. The screw of the expansion screw is a stainless steel screw, and the expansion sleeve of the expansion screw is a high-strength nylon expansion sleeve.

[0009] Preferably, in step a) of cleaning the wall surface, the base layer with severe efflorescence and whitening is repeatedly cleaned with a 5% oxalic acid aqueous solution and then cleaned with clean water.

[0010] Preferably, the sealing primer is sprayed evenly and thinly with an airless spray gun, the construction temperature is above 10°C, and the spraying amount is 0.2~0.3kg / ㎡.

[0011] Preferably, the spraying pressure of the colorful real stone paint is 0.5~1Mpa / cm², the construction temperature is above 10℃, the thickness is 1~2mm, two coats are sprayed, the interval time is two hours, the spray gun is perpendicular to the wall to be sprayed, and the distance is 55~65cm. During the construction of the corners, the spraying cannot be thick at one time, and the thin spraying multi-layer method is adopted, that is, the surface is dry and then re-sprayed, the spray gun distance is 75~85cm, and it cannot be sprayed vertically at the corners, only scattering can be used, that is, spraying two surfaces, and the edge of the upper mist flower is swept into the corners, and the spraying amount is 3~5㎏ / ㎡.

[0012] Preferably, the exterior wall finishing paint is applied by using an airless spray gun to spray a thin layer evenly, the construction temperature is above 10°C, and the spraying amount is 0.2~0.3kg / ㎡.

[0013] Preferably, the wall treatment device comprises a cover body, a motor, a rotating seat, two rotating plates, a plurality of brush mechanisms, a plurality of steel brush mechanisms and a suction mechanism; the cover body is provided with a motor; the driving end of the motor is provided with a rotating seat located in the cover body; an upper and lower rotating plates are provided on the rotating seat; the brush mechanisms are arranged in two rows on the upper rotating plate, and the brush mechanisms in the front row are staggered with the brush mechanisms in the rear row; the steel brush mechanisms are arranged in two rows on the lower rotating plate, and the steel brush mechanisms in the front row are staggered with the steel brush mechanisms in the rear row; the brush mechanisms and the steel brush mechanisms are elastically arranged on corresponding rotating plates respectively; the suction mechanism is connected to the lower end of the cover body; and a handle is provided on the cover body.

[0014] Preferably, the brush mechanism includes a sliding sleeve, a nut, a screw, a plug-in sleeve, a hair bundle and a spring. A nut is provided at the upper end of the sliding sleeve, a screw matching therewith is provided inside the nut, a plug-in sleeve is provided at the lower end of the screw located inside the sliding sleeve, a tightening head matching the plug-in sleeve is provided at the upper end of the hair bundle, the tightening head and the plug-in sleeve are fixedly connected by friction, a retaining ring is provided on the sliding sleeve, and a spring is provided on the sliding sleeve between the retaining ring and the corresponding rotating plate.

[0015] Preferably, the steel brush mechanism has the same structure as the hair brush mechanism, the hair brush mechanism adopts hair bundles; the steel brush mechanism adopts steel wire bundles, and the steel wire bundles are supported by elastic steel wires.

[0016] Preferably, the suction mechanism includes a cylinder, an exhaust fan, an air inlet, an exhaust port and a filter. The filter is provided in the cylinder, an air inlet is provided on the cylinder below the filter, and an exhaust port connected to the exhaust fan is provided on the cylinder above the filter.

[0017] The beneficial effects of the present invention are as follows: the present invention fully covers the wall with a stainless steel mesh and then allows the adhesive ceramic treasure to penetrate through the stainless steel mesh and bond to the primer layer and the repair surface, and the particulate matter is used to improve the connection strength between the ceramic treasure layer and the exterior wall paint layer, and the ceramic treasure layer is also well bonded to the putty layer on its outside, effectively improving the adhesion between the inner and outer layers, reducing the risk of falling off, and facilitating construction. Moreover, the specific structure of the stainless steel mesh makes the adhesion stronger than that of other structures of ordinary materials or metal materials, and the exterior wall surface is firmly attached to the ceramic treasure bonding layer with a stainless steel mesh lining. At the same time, the stainless steel mesh also serves as the lining of the ceramic treasure layer, and also effectively prevents the cracking and water seepage of the exterior wall surface; because the stainless steel mesh can press and fix small-area hollows, there is no need to smash the small-area hollows; the wall dust and loose layer are removed by the wall treatment device, and the removed dust and loose layer are collected, effectively reducing the dust diffusion on site and facilitating construction, avoiding the disadvantages caused by cleaning the wall surface.

[0018] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a wall surface treatment device used in a building exterior wall anti-seepage and anti-falling structure and construction method; Figure 2 It is a structural schematic diagram of the brush mechanism; Figure 3 It is a schematic diagram of the structure of the collection mechanism; Figure 4 It is a schematic diagram of the structure of the winding network.

[0020] In the figure: 1-cover, 2-motor, 3-rotating seat, 4-rotating plate, 5-brush mechanism, 6-steel brush mechanism, 7-suction mechanism, 8-handle, 9-fixing part I, 10-fixing part II, 11-fixing part II, 12-hook II, 13-winding wire, 51-sliding sleeve, 52-nut, 53-screw, 54-plug sleeve, 55-hair bundle, 56-spring, 57-retaining ring, 58 - tightening head, 71- cylinder, 72- exhaust fan, 73- air inlet, 74- exhaust outlet, 75- filter screen, 20- receiving hopper, 21- partition screen, 22- electric cylinder, 23- crushing plate, 24- connecting pipe, 25- storage box, 26- baffle, 27- sliding shaft, 28- pushing plate, 29- connecting seat, 210- tension spring, 211- material guide body, 212- tooth body, 213- discharge pipe. DETAILED DESCRIPTION

[0021] Embodiment 1: A water seepage and fall-off prevention structure for building exterior walls, comprising a coating primer layer, a ceramic waterproof layer and an exterior wall paint layer arranged in sequence from the inside to the outside, wherein a reinforcing net is arranged in the ceramic waterproof layer, and the reinforcing net is fixedly connected to the interior wall through a plurality of fixings, and the exterior wall paint layer is fixedly connected to the coating primer layer by bonding through the ceramic waterproof layer; The reinforcing mesh is a stainless steel mesh or is made by winding stainless steel wire on site; Particles are embedded between the ceramic waterproof layer and the exterior wall paint layer; Before applying the primer layer, a wall treatment device is used to clean loose parts and dust on the wall; The construction method of the anti-seepage and anti-falling structure of the building exterior wall comprises the following steps in sequence: a) Wall cleaning: Use the wall treatment device to clean the loose parts and dust on the wall, and then apply the primer to the wall; for the base layer with severe alkali whitening, wash it repeatedly with 5% oxalic acid aqueous solution, and then wash it with clean water; b) First coat of plastering and repairing: plaster the loose parts to form a repair layer, the thickness of which should be flush with the original wall surface; c) Laying the stainless steel mesh with adhesion: Lay the stainless steel mesh on the outside of the wall and leave expansion joints. The stainless steel mesh should be 304 stainless steel mesh; d) Stainless steel mesh fixing: The stainless steel mesh is fixed by a number of fixings, which are embedded in the inner wall structure layer. The fixings are expansion screws, which press and fix the stainless steel mesh through 304 stainless steel gaskets. The screws of the expansion screws are 304 stainless steel screws, and the expansion sleeves of the expansion screws are high-strength nylon expansion sleeves; e) Ceramic treasure waterproof treatment: Use ceramic treasure adhesive to apply to the wall surface, and ceramic treasure penetrates the stainless steel mesh to bond with the original wall surface and the repair surface, and covers the stainless steel mesh and fixings, and then spray the particles on the ceramic treasure bonding layer. After the ceramic treasure bonding layer is completely dry, cut the expansion joint all the way to the inner wall structure layer, and then fill the expansion joint with weather-resistant glue; f) External wall coating layer: apply anti-cracking putty, hang fiber mesh, apply anti-alkali primer, after the primer is completely dry, apply the external wall middle layer elastic paint, after the middle layer elastic paint is completely dry, spray multi-color real stone paint, after the multi-color real stone paint is completely dry, apply external wall finishing paint; The sealing primer is evenly and thinly sprayed with an airless spray gun, the construction temperature is above 10°C, and the spraying amount is 0.2~0.3kg / ㎡. The spraying pressure of the colorful real stone paint is 0.5~1Mpa / cm², the construction temperature is above 10°C, the thickness is 1~2mm, and two coats are sprayed with an interval of two hours. The spray gun is perpendicular to the wall to be sprayed, and the distance is 55~65cm. During the construction of the Yin-Yang corners, the spraying cannot be thick at one time. The thin spraying multi-layer method is adopted, that is, the surface is dry and then re-sprayed. The spray gun distance is 75~85cm, and it cannot be sprayed vertically at the Yin-Yang corners. Only scattering can be used, that is, spraying two surfaces, and the edge of the upper fog flower is swept into the Yin-Yang corners. The spraying amount is 3~5kg / ㎡. The exterior wall finishing paint is evenly and thinly sprayed with an airless spray gun, the construction temperature is above 10°C, and the spraying amount is 0.2~0.3kg / ㎡.

[0022] The present application adopts a stainless steel mesh that is fixed all over the wall, and then the adhesive ceramic treasure is infiltrated into the stainless steel mesh to bond with the original wall and the repair surface, and the ceramic treasure layer is also well bonded to the putty layer on its outside. Because the surface of the ceramic treasure is a bit rough, its outer layer of putty has good adhesion when scraped on, but there is another layer of crystal on its surface, which plays a waterproof role, effectively improving the adhesion between the inner and outer layers and reducing the risk of falling off. In this way, strong adhesion is formed between the inner and outer layers. Without the need to remove the inner layer, the plaster coating is directly applied, which greatly simplifies the entire process and avoids a series of problems caused by the removal of the existing base layer. At the same time, it also guarantees the functional requirements of the original wall design, has the original thermal insulation function, and does not cause the problem of falling off due to poor adhesion between the inner and outer layers without increasing the overall thickness much.

[0023] The best bite and adhesion effect is formed by combining stainless steel mesh with ceramic treasure. After the stainless steel mesh is adopted in this application, it is necessary to solve how to apply plaster so that the plaster layer and the stainless steel mesh can be bite and adhered to achieve the best integration effect. The commonly used plaster materials (lime, gypsum-based latex, etc.) only have good adhesion to the fiber mesh, but cannot be effectively adhered to stainless steel. After a lot of experiments and effect verification, the inventor selected ceramic treasure, which is usually used for ceramic pasting, cleaning and maintenance, to be used in combination with stainless steel mesh, and achieved the expected technical effect. In the field of construction, ceramic treasure is only used for ceramic pasting, cleaning and maintenance, and has never been attempted with stainless steel mesh. This is a combination use method obtained by the inventor through hard work and is different from any existing technology.

[0024] See also Figure 1 , 2The wall surface treatment device comprises a cover body 1, a motor 2, a rotating seat 3, two rotating plates 4, a plurality of brush mechanisms 5, a plurality of steel brush mechanisms 6 and a suction mechanism 7. The cover body 1 is provided with a motor 2, and the driving end of the motor 2 is provided with a rotating seat 3 located in the cover body 1. The rotating seat 3 is provided with two upper and lower rotating plates 4. The brush mechanisms 5 are arranged in two rows on the upper rotating plate 4, and the front row of brush mechanisms 5 and the rear row of brush mechanisms 5 are staggered. The steel brush mechanisms 6 are arranged in two rows on the lower rotating plate 4, and the front row of steel brush mechanisms 6 and the rear row of steel brush mechanisms 6 are staggered. The brush mechanisms 5 and the steel brush mechanisms 6 are elastically arranged on the corresponding rotating plates 4 respectively. The suction mechanism 7 is connected to the lower end of the cover body 1, and the cover body 1 is provided with a handle 8. The brush mechanism 5 comprises a sliding sleeve 51, a nut 52, a screw 53, a plug sleeve 54, a hair bundle 55 and a spring 56. The upper end of the sliding sleeve 51 is provided with A nut 52 is provided with a screw 53 which cooperates with the nut 52, and a plug-in sleeve 54 is provided at the lower end of the screw 53 in the sliding sleeve 51. A tightening head 58 which cooperates with the plug-in sleeve 54 is provided at the upper end of the hair bundle 55, and the tightening head 58 and the plug-in sleeve 54 are fixedly connected by friction. A retaining ring 57 is provided on the sliding sleeve 51, and a spring 56 is provided on the sliding sleeve 51 between the retaining ring 57 and the corresponding rotating plate 4. The steel brush mechanism 6 has the same structure as the hair brush mechanism 5, except that the hair bundle 55 is replaced with a steel wire bundle, and the steel wire bundle is supported by elastic steel wire. The suction mechanism 7 includes a cylinder 71, an exhaust fan 72, an air inlet 73, an exhaust port 74 and a filter screen 75. A filter screen 75 is provided in the cylinder 71, an air inlet 73 is provided on the cylinder 71 below the filter screen 75, and an exhaust port 74 connected to the exhaust fan 72 is provided on the cylinder 71 above the filter screen 75.

[0025] When the processing device is working, hold the handle 8 to cover the cover body 1 on the wall to be cleaned (it can also be operated by a mechanical arm), the spring 56 pushes the sliding sleeve 51 through the retaining ring 57, the sliding sleeve 51 drives the screw 53 to move through the nut 52, the screw 53 drives the hair bundle 55 to press against the wall through the plug-in sleeve 54, and the steel wire bundle is the same as the hair bundle 55, and is also pressed against the wall by the action of the corresponding spring 56, and then start the motor 2 to drive the rotating seat 3 to rotate, the rotating seat 3 drives the rotating plate 4 to rotate, and the two rotating plates 4 respectively drive the brush mechanism 5 and the steel brush mechanism 6 to rotate, the brush mechanism 5 is used for cleaning dust, and the steel brush mechanism 6 is used for cleaning loose layers. The cleaned fallen materials enter the cylinder 71 through the air inlet 73 under the action of the exhaust fan 72, and when the hair bundle 55 or the steel wire bundle is worn, the length of the hair bundle 55 or the steel wire bundle extending out of the sliding sleeve 51 is adjusted by rotating the screw 53.

[0026] Embodiment 2: The stainless steel mesh is wound on site, see Figure 4The stainless steel mesh includes a fixing part I9, a plurality of fixing parts II10 and a stainless steel wire 13. The fixing parts II10 are distributed around the fixing part I9. The fixing part I9 is ​​provided with hooks I11 arranged at intervals along its periphery. The fixing parts II10 are provided with hooks II12. The stainless steel wire 13 is wound around the hooks I11 and II12 along corresponding paths. Both ends of the stainless steel wire 13 are fixedly connected with the corresponding hooks. The fixing parts all use plastic expansion screws. The screws of the plastic expansion screws are 304 stainless steel. Compared with the use of traditional whole roll finished mesh, it has good adaptability and flexibility, does not need to be cut as needed, and has low cost.

[0027] Embodiment three: The difference between this embodiment and the first embodiment is that when hollowing or cracking of the hollowing occurs within the standard range, the hollowing needs to be smashed and repaired, the hollowing layer smashed is collected and crushed by a collecting mechanism, and the crushed material obtained by the collecting mechanism is used for the hollowing repair process. The hollowing repair process is as follows: 1. A plurality of blind holes distributed at intervals are punched on the wall substrate, an expansion tube is inserted into each blind hole, and then a stainless steel screw is screwed into each expansion tube, and the stainless steel screw is not completely screwed into the expansion tube; 2. The crushed material, water, sand and cement are mixed to obtain a mixed slurry, and the mixed slurry is applied to the wall substrate. A pre-coating layer is formed on the wall, and the pre-coating layer does not cover the nut of the stainless steel screw; then a stainless steel wire is wound around the stainless steel screw along the corresponding path to form a fixed net; third, a mixed slurry is coated on the pre-coating layer to make the repaired mixed slurry layer flush with the original wall surface; a stainless steel screw is screwed into each expansion tube, and a stainless steel wire is wound around the stainless steel screw along the corresponding path to form a fixed net, which effectively reduces the problem of easy detachment between the repair layer and the original wall, and realizes recycling and reuse, reduces costs, and avoids the inconvenience and safety hazards caused by using a hanging basket to transport the removed materials to the ground.

[0028] See also Figure 3The collecting mechanism includes a receiving hopper 20, a partition net 21, an electric cylinder 22, a crushing plate 23, a connecting pipe 24 and a storage box 25. The receiving hopper 20 is provided with a partition net 21, and the rear end of the receiving hopper 20 is provided with an electric cylinder 22. The driving end of the electric cylinder 22 is provided with a crushing plate 23 located at the upper end of the partition net 21. The lower end of the hopper 20 is connected to the storage box 25 through the connecting pipe 24. The upper end of the crushing plate 23 is provided with a baffle 26 penetrating the rear side wall of the receiving hopper 20. A discharge pipe 213 is provided at the bottom of the storage box 25, a sliding shaft 27 is provided on the front side wall of the receiving hopper 20, a push plate 28 is provided at the rear end of the sliding shaft 27, a connecting seat 29 is provided at the front end of the sliding shaft 27, a tension spring 210 is sleeved on the sliding shaft 27 between the connecting seat 29 and the receiving hopper 20, and the two ends of the tension spring 210 are respectively fixedly connected to the connecting seat 29 and the receiving hopper 20, and a guide body 211 with a guiding inclined surface is provided on the inner front side wall of the receiving hopper 20. The lower end plane of the guide body 211 is in contact with the upper end surface of the push plate 28, the upper end height of the crushing plate 23 does not exceed the upper end height of the push plate 28, and the front end of the crushing plate 23 is provided with a plurality of teeth 212 arranged at intervals.

[0029] When the collecting mechanism is working, the receiving hopper 20 is placed below the hollow drum and operated manually or by a mechanical arm. The knocked-down hollow drum falls into the receiving hopper 20, and then the electric cylinder 22 is started to push the crushing plate 23 to move forward. The crushing plate 23 pushes the material in front of it to move forward, and the material is cut off when passing through the material guide body 211. When the push plate 28 is blocked by the front side wall of the receiving hopper 20 and cannot move forward, the crushing plate 23 continues to move forward a certain distance to crush the material between the push plate 28 and the crushing plate 23, and then the electric cylinder 22 is started to pull the crushing plate 23 back to its position, and the push plate 28 pushes the crushed material backward under the action of the spring. The crushed material is easily passed through the partition net 21 under the push of the push plate 28, and falls into the storage box 25 through the partition net 21 and the connecting pipe 24, and is finally discharged through the discharge pipe 213.

[0030] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A water seepage and anti-falling structure for building exterior walls, characterized in that: It includes a coating primer layer, a ceramic waterproof layer and an exterior wall paint layer arranged in sequence from the inside to the outside, wherein a reinforcing net is arranged in the ceramic waterproof layer, and the reinforcing net is fixedly connected to the inner wall through a plurality of fixing parts, and the exterior wall paint layer is fixedly connected to the coating primer layer through the ceramic waterproof layer; The reinforcing mesh is a stainless steel mesh or is made by winding stainless steel wire on site; Particles are embedded between the ceramic waterproof layer and the exterior wall paint layer; Before applying the primer layer, a wall treatment device is used to clean loose parts and dust on the wall; The construction method of the anti-seepage and anti-falling structure of the building exterior wall comprises the following steps in sequence: a) Wall cleaning: Use a wall treatment device to clean the loose parts and dust on the wall, and then apply a sealant primer to the wall. The sealant primer is sprayed evenly and thinly with an airless spray gun. The construction temperature is above 10°C and the spraying amount is 0.2~0.3kg / ㎡; b) First coat of plastering and repairing: plaster the loose parts to form a repair layer, the thickness of which should be flush with the original wall surface; c) Laying the adhesion stainless steel mesh: Lay the stainless steel mesh on the outside of the wall and leave expansion joints; d) Stainless steel mesh fixing: The stainless steel mesh is fixed by a number of fixings, which are embedded in the inner wall structure layer; e) Ceramic treasure waterproof treatment: Use ceramic treasure adhesive to apply to the wall surface, and ceramic treasure penetrates the stainless steel mesh to bond with the original wall surface and the repair surface, and covers the stainless steel mesh and fixings, and then spray the particles on the ceramic treasure bonding layer. After the ceramic treasure bonding layer is completely dry, cut the expansion joint all the way to the inner wall structure layer, and then fill the expansion joint with weather-resistant glue; f) Exterior wall paint layer: apply anti-cracking putty, hang fiber mesh, apply anti-alkali primer, after the primer is dry, apply the middle layer of elastic paint for the exterior wall, after the middle layer of elastic paint is dry, spray colorful real stone paint, after the colorful real stone paint is dry, apply exterior wall finishing paint, the spraying pressure of the colorful real stone paint is 0.5~1Mpa / cm², the construction temperature is above 10℃, the thickness is 1~2mm, spray two coats, the interval time is two hours, the spray gun is perpendicular to the wall to be sprayed, the distance is 55~65cm, for the construction process of the Yin-Yang corner, the spraying cannot be thick at one time, the thin spraying multi-layer method is adopted, that is, the surface is dry and then re-sprayed, the spray gun distance is 75~85cm, and it cannot be sprayed vertically at the Yin-Yang corner, only scattering can be used, that is, spray two sides, and the edge of the upper mist flower is swept into the Yin-Yang corner, the spraying amount is 3~5㎏ / ㎡.

2. A water seepage and anti-falling structure for building exterior walls as claimed in claim 1, characterized in that: The fixing piece is an expansion screw, which presses and fixes the stainless steel mesh through a stainless steel gasket. The screw of the expansion screw is a stainless steel screw, and the expansion sleeve of the expansion screw is a high-strength nylon expansion sleeve.

3. The anti-seepage and anti-falling structure for building exterior walls according to claim 1, characterized in that: Step a) During wall cleaning, for severely alkaline-whitened base layers, wash them repeatedly with a 5% oxalic acid solution and then with clean water.

4. The anti-seepage and anti-falling structure for building exterior walls according to claim 1, characterized in that: The exterior wall finishing paint is applied by using an airless spray gun to spray a thin layer evenly, the construction temperature is above 10°C, and the spraying amount is 0.2~0.3kg / ㎡.

5. The anti-seepage and anti-falling structure for building exterior walls according to claim 1, characterized in that: The wall surface treatment device comprises a cover body (1), a motor (2), a rotating seat (3), two rotating plates (4), a plurality of brush mechanisms (5), a plurality of steel brush mechanisms (6) and a suction mechanism (7). The cover body (1) is provided with a motor (2). The driving end of the motor (2) is provided with a rotating seat (3) located in the cover body (1). The rotating seat (3) is provided with two upper and lower rotating plates (4). The brush mechanisms (5) are arranged in two rows on the upper rotating plate (4). The brush mechanisms (5) in the front row are arranged alternately with the brush mechanisms (5) in the rear row. The steel brush mechanisms (6) are arranged in two rows on the lower rotating plate (4). The steel brush mechanisms (6) in the front row are arranged alternately with the steel brush mechanisms (6) in the rear row. The brush mechanisms (5) and the steel brush mechanisms (6) are elastically arranged on the corresponding rotating plates (4) respectively. The suction mechanism (7) is communicated with the lower end of the cover body (1). The cover body (1) is provided with a handle (8).

6. A water seepage and fall-off prevention structure for building exterior walls as claimed in claim 5, characterized in that: The brush mechanism (5) comprises a sliding sleeve (51), a nut (52), a screw (53), a plug sleeve (54), a hair bundle (55) and a spring (56). The upper end of the sliding sleeve (51) is provided with a nut (52), the nut (52) is provided with a screw (53) matched therewith, the lower end of the screw (53) is provided with a plug sleeve (54) located in the sliding sleeve (51), the upper end of the hair bundle (55) is provided with a tightening head (58) matched with the plug sleeve (54), the tightening head (58) and the plug sleeve (54) are fixedly connected by friction, the sliding sleeve (51) is provided with a retaining ring (57), and the sliding sleeve (51) between the retaining ring (57) and the corresponding rotating plate (4) is provided with a spring (56).

7. The anti-seepage and anti-falling structure for building exterior walls according to claim 5, characterized in that: The steel brush mechanism (6) has the same structure as the hair brush mechanism (5), the hair brush mechanism (5) adopts a hair bundle (55), and the steel brush mechanism (6) adopts a steel wire bundle, and the steel wire bundle is supported by elastic steel wires.

8. The anti-seepage and anti-falling structure for building exterior walls as claimed in claim 5, characterized in that: The suction mechanism (7) comprises a cylinder (71), an exhaust fan (72), an air inlet (73), an air outlet (74) and a filter screen (75); the filter screen (75) is provided inside the cylinder (71); the air inlet (73) is provided on the cylinder (71) below the filter screen (75); and the air outlet (74) connected to the exhaust fan (72) is provided on the cylinder (71) above the filter screen (75).

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