CN115519674A - Cement mortar repair system and repair method for building construction - Google Patents

Abstract

The invention discloses a cement mortar repair system and a repair method for building construction, belonging to the field of building construction. A cement mortar repair system for building construction, including a cart, and also includes: a mixing tank with a discharge pipe at the lower end, which is fixedly installed on the upper end of the cart, wherein the upper port of the mixing tank is detachably installed There is a cover plate, and there is a stirring mechanism in the mixing tank; the conical discharge nozzle is fixedly connected to the end of the discharge pipe through a hose, wherein a valve is fixedly installed on the discharge nozzle, and the cover The upper end of the plate is provided with an automatic pressurizing component, which is connected with the stirring mechanism; the invention can prevent the cement mortar from solidifying, and can automatically complete the filling and smoothing of the cement mortar, which is more convenient and labor-saving to use.

Description

Cement mortar repair system and repair method for building construction

technical field

The invention relates to the technical field of building construction, in particular to a cement mortar repair system and a repair method for building construction.

Background technique

Building construction refers to the production activities in the implementation stage of engineering construction. It is the construction process of various buildings. It can also be said to be the process of turning various lines on the design drawings into real objects at designated locations. The place where the construction work is called "construction site" or "construction site" is also called construction site.

After the construction site is completed, there will be some cracks in the cement mortar, so the cracks need to be repaired, usually manually using mortar to fill or decorate them, and when the construction area is large, the workers need to hold the mortar and The repair tools are searched everywhere, the workers are physically exhausted, and the mortar is also prone to solidification during the process, making repairs extremely inconvenient.

Contents of the invention

The purpose of the present invention is to solve the inconvenient problem of manually using cement mortar to repair building cracks in the prior art, and propose a cement mortar repair system and repair method for building construction.

In order to achieve the above object, the present invention adopts the following technical solutions:

A cement mortar repair system for building construction, including a cart, and also includes: a mixing tank with a discharge pipe at the lower end, which is fixedly installed on the upper end of the cart, wherein the upper port of the mixing tank is detachably installed There is a cover plate, and there is a stirring mechanism in the mixing tank; the conical discharge nozzle is fixedly connected to the end of the discharge pipe through a hose, wherein a valve is fixedly installed on the discharge nozzle, and the cover An automatic pressurizing component is provided on the upper end of the plate, and the automatic pressurizing component is connected with the stirring mechanism.

In order to prevent the cement mortar from solidifying, preferably, the mixing mechanism includes a first motor fixedly installed on the upper end of the cover plate, wherein the output shaft of the first motor is connected to a motor that extends into the mixing tank through a lifting mechanism. A rotating shaft, and a stirring rod fixedly connected with the rotating shaft is arranged in the stirring tank.

In order to improve the effect of the stirring rod stirring cement mortar, preferably, the lifting mechanism includes a sleeve fixedly connected to the output shaft of the first motor, and the upper end of the rotating shaft is longitudinally slidably connected in the sleeve, wherein the cover The upper end of the plate is rotatably connected with a reciprocating lead screw, and the reciprocating lead screw and the casing are connected through two meshing gears. superior.

In order to automatically pressurize the mixing tank, preferably, the automatic pressurization mechanism includes a piston fixedly connected to the outer wall of the upper end of the rotating shaft, and the outer wall of the piston is pressed against the casing, wherein the upper end of the rotating shaft is provided with Extending to the pressurized pipe in the stirring tank, the outer wall of the sleeve is provided with a suction pipe communicating with it, a check valve is fixedly installed in the pressurized pipe and the suction pipe, and the outer wall of the upper end of the stirring tank is fixed An overflow pipe communicating with it is connected, and an overflow valve is installed in the overflow pipe.

In order to automatically complete the smoothing of cement mortar, preferably, the outer wall of the discharge nozzle is fixedly connected with a strip-shaped side plate, and a handle is fixedly installed on the side plate, and both ends of the side plate are passed through the first rotation. The rod is rotatably equipped with rollers; wherein, the side plate is rotatably connected with a rotating roller through the second rotating rod, and the outer wall of the side plate is fixedly installed with a second motor, and the output shaft of the second motor is connected to the second rotating rod Fixed connection.

In order to remove dust in building cracks, preferably, a brush roller is rotatably connected to the side plate through a third rotating rod, and the third rotating rod is connected to the second rotating rod through a chain transmission.

In order to prevent dust from floating everywhere, preferably, the outer wall of the brush roller is covered with a suction hood, and the suction port of the suction hood faces the same direction as the discharge port of the discharge nozzle, wherein the sleeve The outer wall is covered with a gas collecting hood, the gas collecting hood is fixedly connected to the first motor, the end of the suction pipe is located in the gas collecting hood, the outer wall of the gas collecting hood is fixedly connected with a filter pipe communicating with it, the A filter element is detachably installed in the filter pipe, and the filter pipe communicates with the suction hood through a connecting pipe.

In order to prevent the cement mortar in the hose from solidifying, preferably, the outer wall of the hose is fixedly sleeved with an outer tube, and the inner wall of the outer tube is fixedly connected with a plurality of evenly distributed rubber balls, wherein the plurality of The rubber balls are connected through a communication pipe, and the communication pipe is fixedly connected to the end of the overflow pipe through the delivery pipe. The outer wall of the outer tube is fixedly connected with a thin tube communicating with the communication pipe. half of the overflow pipe.

In order to make the air pressure in the stirring tank more stable, further, an air storage tank is fixedly installed on the top of the cover plate, and the lower end of the air storage tank is fixedly connected with an inflatable tube extending to the lower end of the cover plate, and the gas storage tank in the inflatable tube A solenoid valve is fixedly installed.

A cement mortar repair method for building construction, the operation steps are as follows:

Step 1: Pour the cement mortar into the mixing tank, cover the cover and start the first motor at the same time;

Step 2: The first motor will drive the stirring rod to stir the cement mortar in the mixing tank;

Step 3: Move the whole device to the position to be repaired by a cart, push the rollers on the side panel against the outer wall of the building and push the side panel to move along the crack;

Step 4: At the same time, open the valve and the second motor, and the roller will automatically smooth the cement mortar;

Step 5: At the same time, the third rotating rod will drive the brush roller to rotate, and the brush roller will sweep out the dust in the crack.

Compared with the prior art, the present invention provides a cement mortar repair system for building construction, which has the following beneficial effects:

1. The cement mortar repair system for building construction uses the first motor to drive the rotating shaft to rotate, and the rotating shaft will drive the stirring rod to stir the cement mortar in the mixing tank, so as to keep the cement mortar uniform and prevent the cement mortar from solidifying. more convenient;

2. The cement mortar repair system for building construction drives the roller to rotate through the second motor, and the roller will automatically smooth the cement mortar, thereby automatically completing the filling and smoothing of the cement mortar, which is more convenient and labor-saving to use. On the other hand , the second rotating rod will drive the third rotating rod and the brush roller to rotate through the chain drive, and the brush roller will sweep out the dust in the crack, thereby improving the quality of crack repair;

3. The cement mortar repair system used in building construction will discharge air into multiple rubber balls through the overflow pipe during exhausting, and the rubber balls will expand, thereby squeezing the hose, and then leaving the remaining air in the hose. When the overflow pipe is exhausted next time, the rubber ball will squeeze the outer wall of the hose again, so that the cement mortar in the hose is squeezed intermittently, thereby preventing the cement mortar in the hose from appearing. solidification;

4. The cement mortar repair system for building construction will drive the piston to slide up and down in the casing through the rotating shaft. When the piston slides upwards, the air at the top of the casing will be compressed, so that it will be pressed into the mixing tank through the pressure tube. Therefore, the mixing tank is automatically pressurized indirectly, which is more convenient and labor-saving to use.

Description of drawings

Fig. 1 is the axonometric structural representation of a cement mortar repair system for building construction proposed by the present invention;

Fig. 2 is the cut-away structure schematic diagram of a kind of building construction cement mortar repairing system that the present invention proposes;

Fig. 3 is the local axonometric structure schematic diagram of a kind of building construction cement mortar repairing system that the present invention proposes;

Fig. 4 is the local structure schematic diagram in Fig. 2 of a kind of building construction cement mortar repairing system that the present invention proposes;

Fig. 5 is an enlarged view of part A in Fig. 2 of a cement mortar repair system for building construction proposed by the present invention;

Fig. 6 is an enlarged view of part B in Fig. 2 of a cement mortar repair system for building construction proposed by the present invention.

In the figure: 1. cart; 2. mixing tank; 3. cover plate; 4. discharge pipe; 5. hose; 6. discharge nozzle; 7. valve; 8. first motor; 9. shaft; 10 1. Stirring rod; 11. Sleeve; 12. Reciprocating screw; 13. Gear; 14. Reciprocating slide; 15. Piston; 16. Pressure pipe; 17. Suction pipe; 18. Side plate; 19. Roller; 20 , the first rotating rod; 21, the second rotating rod; 22, the rotating roller; 23, the third rotating rod; 24, the brush roller; 25, the handle; 26, the chain drive; 27, the overflow pipe; 28, the overflow Valve; 29, outer pipe; 30, connecting pipe; 31, rubber ball; 32, thin tube; 33, conveying pipe; 34, suction hood; 35, connecting pipe; 36, gas collecting hood; 37, inflatable pipe; 38 , filter tube; 39, gas storage tank; 40, second motor.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.

Example 1:

With reference to Fig. 1-Fig. 6, a kind of cement mortar repairing system for building construction, comprises cart 1, also comprises: the mixing tank 2 that is provided with discharge pipe 4 at the lower end, is fixedly installed on the upper end of cart 1, wherein, mixing tank A cover plate 3 is detachably installed on the upper port of 2, and a stirring mechanism is provided in the stirring tank 2; the conical discharge nozzle 6 is fixedly connected to the end of the discharge pipe 4 through a hose 5, wherein the discharge nozzle 6 is The valve 7 is fixedly installed, and the upper end of the cover plate 3 is provided with an automatic pressurization component, which is connected with the stirring mechanism;

When in use, the whole device can be easily moved through the trolley 1, thereby reducing the burden on the workers. Pour the cement mortar into the mixing tank 2 and cover the cover plate 3, and the cement mortar can be stirred by the stirring mechanism, thereby Keep the cement mortar uniform and prevent the cement mortar from solidifying. It is more convenient to use, and the automatic pressurization mechanism can automatically pressurize the mixing tank 2. When the crack needs to be repaired, open the valve 7 and the discharge nozzle 6 can be used. The cement mortar is sprayed on the crack, which is more convenient and labor-saving to use.

Example 2:

Referring to Fig. 1, Fig. 2 and Fig. 5, it is basically the same as that of Example 1, and furthermore, a specific implementation of the stirring mechanism is disclosed.

The stirring mechanism includes a first motor 8 fixedly installed on the upper end of the cover plate 3, wherein the output shaft of the first motor 8 is connected with a rotating shaft 9 extending into the stirring tank 2 through a lifting mechanism, and the stirring tank 2 is provided with a rotating shaft 9 Fixedly connected stirring rod 10.

Start the first motor 8, the first motor 8 will drive the rotating shaft 9 to rotate through the casing 11, and the rotating shaft 9 will drive the stirring rod 10 to stir the cement mortar in the mixing tank 2, so as to keep the cement mortar uniform and prevent the cement mortar from It solidifies and is more convenient to use.

Furthermore, the lifting mechanism includes a casing 11 fixedly connected to the output shaft of the first motor 8, and the upper end of the rotating shaft 9 is longitudinally slidably connected in the casing 11, wherein the upper end of the cover plate 3 is rotatably connected with a reciprocating screw 12 , the reciprocating lead screw 12 and the casing 11 are connected by two meshing gears 13, the outer wall of the reciprocating lead screw 12 is threadedly connected with a reciprocating slide plate 14, and the rotating shaft 9 is rotatably connected to the reciprocating slide plate 14;

When the casing 11 rotates, the casing 11 will drive the reciprocating screw 12 to rotate through the two meshing gears 13, the reciprocating screw 12 will drive the reciprocating slide plate 14 to reciprocate and slide up and down, and the reciprocating slide plate 14 will drive the rotating shaft 9 to rotate. The mixing tank 2 and the casing 11 reciprocate and slide up and down, so that the rotating shaft 9 can drive the stirring rod 10 to stir in a circle while performing up and down reciprocating stirring, so as to improve the mixing effect of the cement mortar in the mixing tank 2 .

Example 3:

Referring to Fig. 1, Fig. 2 and Fig. 5, it is basically the same as Embodiment 2, and furthermore, a specific implementation of the automatic pressurizing mechanism is disclosed.

The automatic pressurization mechanism includes a piston 15 fixedly connected to the outer wall of the upper end of the rotating shaft 9, and the outer wall of the piston 15 is pressed against the inside of the casing 11, wherein the upper end of the rotating shaft 9 is provided with a pressurizing tube 16 extending into the stirring tank 2, and the casing The outer wall of 11 is provided with the suction pipe 17 that communicates with it, and the pressure pipe 16 and the suction pipe 17 are all fixedly installed with check valves, and the upper end outer wall of the stirring tank 2 is fixedly connected with an overflow pipe 27 that communicates with it, and the overflow An overflow valve 28 is installed in the pipe 27;

When the rotating shaft 9 reciprocates up and down, the rotating shaft 9 will drive the piston 15 to reciprocate and slide up and down in the sleeve 11. When the piston 15 slides upward, the air at the top of the sleeve 11 will be compressed, so that it will be pressed by the pressure tube 16 to Stirring tank 2, thereby indirectly pressurizing the stirring tank 2, when the piston 15 slides down, the casing 11 will suck in the outside air through the suction pipe 17, when the pressure in the stirring tank 2 is too high, the overflow Duct 27 will discharge excess air in the mixing tank 2 .

Furthermore, the outer wall of the hose 5 is fixedly sleeved with an outer tube 29 , and the inner wall of the outer tube 29 is fixedly connected with a plurality of uniformly distributed rubber balls 31 , wherein the plurality of rubber balls 31 are connected through a communication tube 30 , the connecting pipe 30 is fixedly connected with the end of the overflow pipe 27 by the delivery pipe 33, and the outer wall of the outer pipe 29 is fixedly connected with a thin pipe 32 communicated with the connecting pipe 30, and the diameter of the thin pipe 32 is half of the overflow pipe 27, so that When the thin tube 32 is exhausted, the air in the connecting tube 30 will not be exhausted instantaneously;

When the discharge nozzle 6 is not in use, that is, when the building cracks are not repaired, the air pressure in the mixing tank 2 will increase, and the overflow pipe 27 will cause indirect exhaust due to the intermittent pressurization of the mixing tank 2. When the overflow pipe 27 is exhausted, the overflow pipe 27 will discharge the air into the connecting pipe 30 through the delivery pipe 33, and then deliver it to a plurality of rubber balls 31, and the rubber balls 31 will expand, thereby squeezing the hose 5 , and then the remaining cement mortar in the flexible pipe 5 will be squeezed. Since the diameter of the thin tube 32 is half of the overflow pipe 27, the thin tube 32 will slowly discharge the gas in the connecting pipe 30 and the rubber ball 31. When the next time When the overflow pipe 27 exhausts, the rubber ball 31 will squeeze the outer wall of the hose 5 again, so that the cement mortar in the hose 5 is squeezed intermittently, thereby preventing the cement mortar in the hose 5 from solidifying.

Furthermore, an air storage tank 39 is fixedly installed on the top of the cover plate 3, and the lower end of the air storage tank 39 is fixedly connected with an inflatable tube 37 extending to the lower end of the cover plate 3, and a solenoid valve is fixedly installed in the inflatable tube 37, and the gas storage tank 39 can store the excess gas in the mixing tank 2. When in use, open the electromagnetic valve in the gas charging pipe 37, so that the gas storage tank 39 can fill the mixing tank 2 with gas more evenly.

Example 4:

With reference to Fig. 1-Fig. 4, it is basically the same as embodiment 3, furthermore, a specific implementation of automatically repairing building cracks is specifically added.

The outer wall of the discharge nozzle 6 is fixedly connected with a strip side plate 18, a handle 25 is fixedly installed on the side plate 18, and a roller 19 is installed on both ends of the side plate 18 through the rotation of the first rotating rod 20; The second rotating rod 21 is rotatably connected with the rotating roller 22, the outer wall of the side plate 18 is fixedly equipped with the second motor 40, and the output shaft of the second motor 40 is fixedly connected with the second rotating rod 21;

When repairing building cracks, push the roller 19 on the side plate 18 against the outer wall of the building, then push the side plate 18 to make the discharge nozzle 6 move along the crack, and at the same time open the valve 7 and the second motor 40 to stir the tank The cement mortar in 2 will be discharged from the discharge nozzle 6 under the action of air pressure, and sprayed onto the cracks that need to be repaired. At the same time, the second motor 40 will drive the rotating roller 22 to rotate through the second rotating rod 21, and the rotating roller 22 will It will automatically smooth the cement mortar, thereby automatically completing the filling and smoothing of the cement mortar, which is more convenient and labor-saving to use.

Furthermore, the side plate 18 is connected with a brush roller 24 through the third rotating rod 23, and the third rotating rod 23 is connected with the second rotating rod 21 through a chain drive 26, and the second rotating rod 21 rotates At this time, the second rotating rod 21 will drive the third rotating rod 23 to rotate through the chain transmission 26, and the third rotating rod 23 will drive the brush roller 24 to rotate, and the brush roller 24 will sweep out the dust in the crack, and then improve the crack repair process. the quality of.

Example 5:

Referring to Fig. 1-Fig. 6, it is basically the same as embodiment 4, furthermore, the specific embodiment of dust removal is specifically added.

The outer wall cover of the brush roller 24 is provided with a suction cover 34, and the suction port of the suction cover 34 faces the same direction as the discharge port of the discharge nozzle 6. Wherein, the outer wall cover of the sleeve pipe 11 is provided with a gas collection cover 36, which collects The air cover 36 is fixedly connected to the first motor 8, the end of the suction pipe 17 is located in the air collecting cover 36, the outer wall of the air collecting cover 36 is fixedly connected with a filter tube 38 communicating with it, and a filter element is detachably installed in the filter tube 38 , the filter element can use a filter bag and a filter screen to mainly filter dust, and the filter pipe 38 is communicated with the suction hood 34 through the connecting pipe 35;

When the suction pipe 17 sucks air, the air collecting hood 36 will inhale the suction hood 34 through the filter pipe 38 and the connecting pipe 35, and the suction hood 34 will suck the dust cleaned by the brush roller 24 to the filter pipe 38 Inside, prevent dust from floating everywhere and pollute the air, and the filter bag in the filter pipe 38 can filter the dust.

A cement mortar repair method for building construction, the operation steps are as follows:

Step 1: Pour the cement mortar into the mixing tank 2, cover the cover plate 3 and start the first motor 8 at the same time;

Step 2: The first motor 8 will drive the stirring rod 10 to stir the cement mortar in the stirring tank 2;

Step 3: Move the whole device to the position to be repaired by the trolley 1, push the roller 19 on the side plate 18 against the outer wall of the building and push the side plate 18 to move along the crack;

Step 4: At the same time, open the valve 7 and the second motor 40, and the roller 22 will automatically smooth the cement mortar;

Step 5: At the same time, the third rotating rod 23 will drive the brush roller 24 to rotate, and the brush roller 24 will sweep out the dust in the crack.

The cement mortar repair system for building construction, when in use, the entire device can be easily moved through the cart 1, thereby reducing the burden on the workers, pour the cement mortar into the mixing tank 2, cover the cover plate 3 and Start the first motor 8, the first motor 8 will drive the rotating shaft 9 to rotate through the casing 11, and the rotating shaft 9 will drive the stirring rod 10 to stir the cement mortar in the mixing tank 2, so as to keep the cement mortar uniform and prevent the cement mortar from When the casing 11 rotates, the casing 11 will drive the reciprocating screw 12 to rotate through the two meshing gears 13, and the reciprocating screw 12 will drive the reciprocating slide 14 to reciprocate up and down, and the reciprocating slide 14 It will drive the rotating shaft 9 to reciprocate and slide up and down in the mixing tank 2 and the sleeve 11, so that the rotating shaft 9 can drive the stirring rod 10 to stir in circles while reciprocating up and down, so that the mixing effect of the cement mortar in the mixing tank 2 can be improved. ;

When the rotating shaft 9 reciprocates up and down, the rotating shaft 9 will drive the piston 15 to reciprocate and slide up and down in the casing 11. When the piston 15 slides upward, the air at the top of the casing 11 will be compressed, thereby pressurizing through the pressure tube 16. into the mixing tank 2, thereby indirectly pressurizing the mixing tank 2, when the piston 15 slides down, the sleeve 11 will suck in the outside air through the suction pipe 17, when the pressure in the mixing tank 2 is too high, the overflow The flow pipe 27 will discharge excess air in the mixing tank 2. When repairing building cracks, the roller 19 on the side plate 18 will be pressed against the outer wall of the building, and then the side plate 18 will be pushed to make the discharge nozzle 6 move along the crack. At the same time, the valve 7 and the second motor 40 are opened, and the cement mortar in the mixing tank 2 will be discharged from the discharge nozzle 6 under the action of air pressure, and sprayed onto the crack to be repaired. At the same time, the second motor 40 will pass through the first The second rotating rod 21 drives the rotating roller 22 to rotate, and the rotating roller 22 will automatically smooth the cement mortar, thereby automatically completing the filling and smoothing of the cement mortar, which is more convenient and labor-saving to use. When the second rotating rod 21 rotates, the second rotating The rod 21 will drive the third rotating rod 23 to rotate through the chain transmission 26, and the third rotating rod 23 will drive the brush roller 24 to rotate, and the brush roller 24 will sweep out the dust in the crack, thereby improving the quality of crack repair.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Equivalent replacement or change of the invention concept should be covered within the protection scope of the present invention.

Claims (10)

1. A cement mortar repair system for building construction, comprising cart (1), is characterized in that, also includes: The lower end is provided with the mixing tank (2) of the discharge pipe (4), which is fixedly installed on the upper end of the trolley (1), Wherein, a cover plate (3) is detachably installed on the upper port of the stirring tank (2), and a stirring mechanism is arranged in the stirring tank (2); The tapered discharge nozzle (6) is fixedly connected to the end of the discharge pipe (4) through a hose (5), Wherein, a valve (7) is fixedly installed on the discharge nozzle (6), and an automatic pressurization assembly is provided on the upper end of the cover plate (3), and the automatic pressurization assembly is connected with a stirring mechanism. 2. A kind of building construction cement mortar repairing system according to claim 1, is characterized in that, described stirring mechanism comprises: The first motor (8) fixedly installed on the upper end of the cover plate (3), Wherein, the output shaft of the first motor (8) is connected with a rotating shaft (9) extending into the stirring tank (2) through a lifting mechanism, and the stirring tank (2) is provided with a shaft fixedly connected with the rotating shaft (9). the stirring rod (10). 3. A kind of building construction cement mortar repairing system according to claim 2, is characterized in that, described lifting mechanism comprises: A sleeve (11) fixedly connected to the output shaft of the first motor (8), the upper end of the rotating shaft (9) is longitudinally slidably connected in the sleeve (11), Wherein, the upper end of the cover plate (3) is rotatably connected with a reciprocating lead screw (12), and the reciprocating lead screw (12) and the sleeve (11) are connected by two meshing gears (13). A reciprocating slide plate (14) is screwed on the outer wall of the reciprocating lead screw (12), and the rotating shaft (9) is rotatably connected to the reciprocating slide plate (14). 4. A kind of building construction cement mortar repairing system according to claim 3, is characterized in that, described automatic pressurization mechanism comprises: A piston (15) fixedly connected to the outer wall of the upper end of the rotating shaft (9), the outer wall of the piston (15) is pressed against the inside of the casing (11), Wherein, the upper end of the rotating shaft (9) is provided with a pressurized pipe (16) extending into the stirring tank (2), and the outer wall of the sleeve pipe (11) is provided with an air suction pipe (17) communicating with it, so A one-way valve is fixedly installed in the pressurizing pipe (16) and the suction pipe (17), and the outer wall of the upper end of the mixing tank (2) is fixedly connected with an overflow pipe (27) communicating with it. An overflow valve (28) is installed in the pipe (27). 5. A kind of cement mortar repairing system for building construction according to claim 4, is characterized in that, the outer wall of described discharge nozzle (6) is fixedly connected with strip side plate (18), and described side plate (18 ) is fixedly installed with a handle (25), and the two ends of the side plate (18) are rotated and installed with rollers (19) through the first rotating rod (20); Wherein, the side plate (18) is rotatably connected with a rotating roller (22) through the second rotating rod (21), the outer wall of the side plate (18) is fixedly installed with a second motor (40), and the second The output shaft of the motor (40) is fixedly connected with the second rotating rod (21). 6. A kind of building construction cement mortar repairing system according to claim 5, is characterized in that, the brush roller (24) that is connected with rotation by the 3rd rotating rod (23) on the described side plate (18), The third rotating rod (23) is connected with the second rotating rod (21) through a chain transmission (26). 7. A kind of building construction cement mortar repairing system according to claim 6, is characterized in that, the outer wall cover of described brush roller (24) is provided with suction hood (34), and described suction hood (34) ) and the discharge port of the discharge nozzle (6) face the same direction, Wherein, the outer wall of the sleeve (11) is covered with a gas collection cover (36), the gas collection cover (36) is fixedly connected to the first motor (8), and the end of the suction pipe (17) Located in the gas collection hood (36), the outer wall of the gas collection hood (36) is fixedly connected with a filter pipe (38) communicating with it, and a filter element is detachably installed in the filter pipe (38), and the filter pipe (38) It communicates with the suction hood (34) through the connecting pipe (35). 8. A kind of cement mortar repairing system for building construction according to claim 4, is characterized in that, the outer wall fixed sleeve of described flexible pipe (5) is provided with outer pipe (29), and the outer pipe (29) The inner wall is fixedly connected with a plurality of evenly distributed rubber balls (31), Wherein, a plurality of said rubber balls (31) are connected through a connecting pipe (30), and said connecting pipe (30) is fixedly connected with the end of an overflow pipe (27) through a conveying pipe (33), and said outer The outer wall of the pipe (29) is fixedly connected with a thin tube (32) communicated with the communication pipe (30), and the diameter of the thin tube (32) is half of the overflow pipe (27). 9. A kind of building construction cement mortar repairing system according to claim 4, is characterized in that, the top of described cover plate (3) is fixedly installed with gas storage tank (39), and described gas storage tank (39) The lower end is fixedly connected with an inflation tube (37) extending to the lower end of the cover plate (3), and a solenoid valve is fixedly installed in the inflation tube (37). 10. A cement mortar repair method for building construction, adopting a kind of cement mortar repair system for building construction according to any one of claims 1-9, characterized in that, the operation steps are as follows: Step 1: Pour the cement mortar into the mixing tank (2), cover the cover plate (3) and start the first motor (8); Step 2: The first motor (8) will drive the stirring rod (10) to stir the cement mortar in the stirring tank (2); Step 3: Move the entire device to the position to be repaired by the cart (1), push the rollers (19) on the side plate (18) against the outer wall of the building and push the side plate (18) to move along the crack; Step 4: Open the valve (7) and the second motor (40) at the same time, and the roller (22) will automatically smooth the cement mortar; Step 5: At the same time, the third rotating rod (23) will drive the brush roller (24) to rotate, and the brush roller (24) will sweep out the dust in the crack.

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