Automatic concrete proportioning device and method for building construction

Abstract

The invention provides a building construction concrete automatic proportioning device and method.The building construction concrete automatic proportioning device comprises a mixing barrel, the outer surface, close to the bottom, of the mixing barrel is fixedly connected with two symmetrical supporting legs, the bottom of the mixing barrel is fixedly communicated with a discharging pipe, a valve is installed on the discharging pipe, the top of the mixing barrel is sleeved with a barrel cover, and the top of the mixing barrel is fixedly connected with the supporting legs; a plurality of feeding mechanisms are installed on the outer surface of the barrel cover, each feeding mechanism comprises a feeding cylinder and a supporting seat, and the supporting seats are fixedly connected to the outer surface of the barrel cover. According to the technical scheme, by arranging the feeding mechanisms, when concrete is mixed, all raw materials can be poured into the feeding cylinders firstly, then the weight of the raw materials needing to be fed is set, and the raw materials can be fed into the feeding cylinders; and then after the raw materials with the specified weight are fed, feeding can be automatically stopped, so that the continuity in the concrete mixing process can be effectively improved, and the processing efficiency of the concrete is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction equipment, and in particular relates to an automatic concrete proportioning device and method for building construction. Background Art

[0002] Construction refers to the production activities during the implementation phase of engineering construction. It is the construction process of various types of buildings. It can also be understood as the process of turning various lines on the design drawings into physical objects at designated locations. Concrete is needed in the construction process.

[0003] Ordinary concrete is an artificial stone made by mixing cement as the main cementing material, with water, sand, gravel, and chemical admixtures and mineral admixtures when necessary, in appropriate proportions, and through uniform mixing, compaction, molding, and curing and hardening.

[0004] When mixing concrete, it is necessary to select the raw material ratio of concrete according to the strength of concrete required by the current project, and the ratio needs to be adjusted according to the specific moisture content of sand and gravel. At present, during the construction process, various raw materials are often weighed first, and then poured into a mixing barrel for stirring. The whole process has poor continuity and requires too much manual participation, which will greatly affect the processing efficiency of concrete. Pouring the raw materials into the mixing barrel all at once will easily lead to uneven mixing of the raw materials, which will affect the processing quality of concrete. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an automatic concrete proportioning device for construction to solve the above-mentioned problems of poor continuity in the concrete processing process and uneven mixing between raw materials.

[0006] In order to realize the above-mentioned technical features, the object of the present invention is realized as follows: an automatic concrete proportioning device for construction, comprising a mixing barrel, the outer surface of the mixing barrel near the bottom is fixedly connected to two symmetrical supporting legs, the bottom of the mixing barrel is fixedly connected to a discharge pipe, a valve is installed on the discharge pipe, the top of the mixing barrel is sleeved with a barrel cover, the outer surface of the barrel cover is installed with a plurality of feeding mechanisms, the feeding mechanism comprises a feeding barrel and a support seat, the support seat is fixedly connected to the outer surface of the barrel cover, the upper surface of the support seat is fixedly connected to a U-shaped seat, the inside of the U-shaped seat is rotatably connected to a rotating roller, the outer surface of the rotating roller is fixedly connected to a first placement plate and a second placement plate, and the first placement plate and the second placement plate are arranged opposite to each other, a supporting assembly for supporting the first placement plate is arranged below the first placement plate, a weighing assembly is installed on the upper surface of the first placement plate, a counterweight assembly is installed on the upper surface of the second placement plate, and the feeding barrel and the weighing assembly are connected by a connecting assembly.

[0007] Preferably, the bottom of the feeding barrel is fixedly connected to a material guide pipe, and the end of the material guide pipe away from the feeding barrel passes through the first placement plate and extends to the outside of the first placement plate, an electromagnetic valve is installed on the material guide pipe, and a feeding hole compatible with the material guide pipe is provided on the top of the barrel cover, and sensors are installed on the sides of the second placement plate and the support seat close to each other, and the sensor is electrically connected to the electromagnetic valve, and a stirring mechanism is provided on the barrel cover, and the stirring mechanism includes a motor installed on the top of the barrel cover, the output end of the motor is fixedly connected to a rotating shaft, and the end of the rotating shaft away from the motor passes through the barrel cover and extends into the interior of the mixing barrel, the outer surface of the rotating shaft is fixedly connected to a circular baffle, the upper surface of the circular baffle is in contact with the inner top wall of the barrel cover, and the interior of the circular baffle is provided with an arc-shaped feeding trough compatible with the feeding hole.

[0008] Preferably, a first flange is fixedly connected to the outer surface of the barrel cover near the bottom, a second flange is fixedly connected to the outer surface of the mixing barrel near the top, and the second flange is connected to the first flange by screws.

[0009] Preferably, the feeding cylinder is a transparent plastic cylinder with scales on the outer surface.

[0010] Preferably, a supporting ball is fixedly embedded on the bottom of the second placement plate.

[0011] Preferably, the support assembly includes a support plate fixedly connected to the upper surface of the support seat, the support plate and the U-shaped seat are connected via a connecting block, and the connecting block is fixedly connected to the upper surface of the support seat.

[0012] Preferably, the connection assembly comprises a plurality of support columns fixedly connected to the bottom of the feeding barrel, and one end of each of the support columns away from the feeding barrel is fixedly connected to a third flange.

[0013] Preferably, the weighing assembly includes a plurality of weighing seats installed on the upper surface of the first placement plate, and the weighing seats correspond one-to-one to the third flange and are fixed by screws. A display screen is installed on the upper surface of the first placement plate, and the display screen is electrically connected to the weighing seats.

[0014] Preferably, the counterweight assembly comprises a round rod fixedly connected to the upper surface of the second placement plate, and a counterweight block is sleeved on the outer surface of the round rod.

[0015] Preferably, the stirring assembly also includes a support ring fixedly connected to the inside of the barrel cover, and the upper surface of the support ring is in contact with the bottom surface of the circular baffle. The bottom surface of the circular baffle is fixedly connected to a rotating ring, and the rotating ring is rotatably connected to the inside of the support ring.

[0016] Preferably, the outer surface of the rotating shaft located in the inner part of the mixing barrel is fixedly connected with the second stirring blade and the first stirring blade, and the first stirring blade is located above the second stirring blade.

[0017] An automatic concrete proportioning method for building construction, the proportioning method is implemented by using the automatic concrete proportioning device for building construction, and comprises the following steps: When mixing concrete, various raw materials are added to the inside of each feeding barrel respectively, and the weight of the raw materials is weighed by the weighing component at this time; then the weight of the counterweight block is increased or decreased accordingly according to the amount of raw materials that need to be put in, and then the motor is started, and the motor drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the first stirring blade, the second stirring blade, the circular baffle and the arc-shaped feeding trough to rotate; When the arc-shaped feeding trough rotates to the bottom of the feeding hole, the raw materials in the feeding cylinder fall into the mixing barrel through the guide pipe, the feeding hole and the arc-shaped feeding trough in sequence, and when the arc-shaped feeding trough moves away from the bottom of the feeding hole, the circular baffle can block the feeding hole to prevent further feeding, and the first stirring blade and the second stirring blade rotate to stir the raw materials in the mixing barrel; After the specified weight of raw materials is added, the weight of the counterweight block will be greater than the weight of the raw materials, so that the counterweight block will press the second placement plate to rotate downward. The downward rotation of the second placement plate can drive the first placement plate to rotate upward. The downward rotation of the second placement plate will cause the sensor position to shift and no light will be received, so that the solenoid valve can be controlled to close and the feeding is stopped. After the mixing of the raw materials is completed, the valve is opened, and the mixed concrete inside the mixing barrel can be discharged through the discharge pipe.

[0018] The present invention has the following beneficial effects: 1. The present invention provides a feeding mechanism. When mixing concrete, all the raw materials can be poured into the feeding barrel first, and then the weight of the raw materials to be fed can be set. After the specified weight of the raw materials is fed, the feeding can be automatically stopped, thereby effectively improving the continuity of the concrete mixing process and improving the processing efficiency of the concrete. By providing a stirring mechanism, when mixing concrete, various raw materials can be evenly added to the mixing barrel in multiple times, and materials can be added while stirring, so that the raw materials can be mixed more evenly and the processing quality of the concrete can be improved.

[0019] 2. The present invention reinforces the mixing barrel and the second flange through a plurality of first reinforcement blocks to improve the connection stability between the mixing barrel and the second flange.

[0020] 3. The present invention can weigh the raw materials in the feeding cylinder through the weighing component, and then prepare them according to a fixed ratio, and can automatically control 4. The present invention uses a through-beam sensor. When the through-beam sensor is located in the same straight line, it can receive light normally and control the solenoid valve to open. When the through-beam sensor is offset, it cannot receive light and control the solenoid valve to close. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a top view of the present invention.

[0024] Figure 3 For the present invention Figure 3 AA section view.

[0025] Figure 4 It is a schematic diagram of the connection between the rotating shaft and the circular baffle of the present invention.

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the barrel cover and the feeding mechanism of the present invention during the feeding process.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the barrel cover and the feeding mechanism of the present invention after the feeding is completed.

[0028] Figure 7 It is a three-dimensional structural schematic diagram of the feeding mechanism of the present invention.

[0029] In the figure: 1. mixing barrel; 2. supporting legs; 3. discharge pipe; 4. barrel cover; 5. first flange; 6. second flange; 7. support seat; 8. U-shaped seat; 9. rotating roller; 10. first placement plate; 11. second placement plate; 12. material guide pipe; 13. supporting column; 14. third flange; 15. weighing seat; 16. display screen; 17. round rod; 18. counterweight; 19. supporting ball; 20. through-beam sensor; 21. connecting block; 22. supporting plate; 23. feeding barrel; 24. motor; 25. rotating shaft; 26. first stirring blade; 27. second stirring blade; 28. circular baffle; 29. ​​arc-shaped feeding trough; 30. supporting ring; 31. rotating ring; 32. feeding hole. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0031] Embodiment 1: An automatic concrete proportioning device for building construction, such as Figure 1As shown, it includes a mixing barrel 1, and the outer surface of the mixing barrel 1 near the bottom is fixedly connected to two symmetrical supporting legs 2. The bottom of the mixing barrel 1 is fixedly connected to a discharge pipe 3, and a valve is installed on the discharge pipe 3. After the valve is opened, the concrete mixed inside the mixing barrel 1 can be discharged through the discharge pipe 3.

[0032] Further, such as Figure 1 As shown, a barrel cover 4 is provided on the top of the mixing barrel 1, and a first flange 5 is fixedly connected to the outer surface of the barrel cover 4 near the bottom, and a second flange 6 is fixedly connected to the outer surface of the mixing barrel 1 near the top, and the second flange 6 is connected to the first flange 5 by screws, and the mixing barrel 1 and the second flange 6 are reinforced by multiple first reinforcement blocks to improve the connection stability between the mixing barrel 1 and the second flange 6.

[0033] Further, such as Figure 1-6 As shown, the outer surface of the barrel cover 4 is equipped with multiple feeding mechanisms, which include a feeding cylinder 23 and a support seat 7. The support seat 7 is fixedly connected to the outer surface of the barrel cover 4. The upper surface of the support seat 7 is fixedly connected to a U-shaped seat 8. The interior of the U-shaped seat 8 is rotatably connected to a rotating roller 9. The outer surface of the rotating roller 9 is fixedly connected to a first placement plate 10 and a second placement plate 11. The first placement plate 10 and the second placement plate 11 are arranged opposite to each other, and a support component for supporting the first placement plate 10 is arranged below the first placement plate 10. A weighing assembly is installed on the upper surface of the first placement plate 10, a counterweight assembly is installed on the upper surface of the second placement plate 11, the feeding cylinder 23 and the weighing assembly are connected by a connecting assembly, the bottom of the feeding cylinder 23 is fixedly connected with a guide pipe 12, and the end of the guide pipe 12 away from the feeding cylinder 23 passes through the first placement plate 10 and extends to the outside of the first placement plate 10, a solenoid valve is installed on the guide pipe 12, and a feeding hole 32 adapted to the guide pipe 12 is opened on the top of the barrel cover 4, and the second placement plate 11 A sensor 20 is installed on the side close to the support seat 7, and the sensor 20 is electrically connected to the solenoid valve. Multiple feeding mechanisms are distributed in a circular array on the barrel cover 4. The weighing assembly can weigh the raw materials inside the feeding barrel 23. When the weight of the raw materials inside the feeding barrel 23 is greater than the weight of the counterweight assembly, it will press the first placement plate 10 to rotate downward, and the downward rotation of the first placement plate 10 can drive the second placement plate 11 to rotate upward. Conversely, when the weight on the counterweight assembly is greater than the weight of the raw materials inside the feeding barrel 23, it will press the second placement plate 11 to rotate downward, and the downward rotation of the second placement plate 11 can drive the first placement plate 10 to rotate upward. Due to the existence of the support assembly, when the first placement plate 10 rotates downward to be parallel to the barrel cover 4, it cannot continue to rotate downward. The sensor 20 is a through-beam sensor. When the through-beam sensor is located on the same straight line, it can receive light normally, so the solenoid valve can be controlled to open. When the position of the through-beam sensor is offset, it cannot receive light, so the solenoid valve can be controlled to close.

[0034] Further, such as Figure 7 As shown, the feeding cylinder 23 is a transparent plastic cylinder with scales on the outer surface, so that the raw materials inside the feeding cylinder 23 can be observed intuitively.

[0035] Further, such as Figure 7 As shown, a supporting ball 19 is fixedly embedded at the bottom of the second placement plate 11 . After the second placement plate 11 is rotated downward to the maximum extent, the supporting ball 19 contacts the upper surface of the supporting seat 7 .

[0036] Further, such as Figure 7 As shown, the support assembly includes a support plate 22 fixedly connected to the upper surface of the support seat 7, the support plate 22 and the U-shaped seat 8 are connected by a connecting block 21, and the connecting block 21 is fixedly connected to the upper surface of the support seat 7. When the weight of the raw material is greater than the weight of the counterweight assembly, the bottom surface of the first placement plate 10 contacts the upper surface of the support plate 22. At this time, when the first placement plate 10 is flush with the barrel cover 4, the connecting block 21 can improve the connection stability between the support plate 22 and the support seat 7. The support leg 2 and the support seat 7 are reinforced by multiple second reinforcement blocks to improve the connection stability between the support leg 2 and the support seat 7.

[0037] Further, such as Figure 1 and Figure 7 As shown, the connection assembly includes a plurality of support columns 13 fixedly connected to the bottom of the feeding barrel 23, and each support column 13 is fixedly connected to a third flange 14 at one end away from the feeding barrel 23. By setting the connection assembly, the feeding barrel 23 can be placed on the weighing assembly more stably.

[0038] Further, such as Figure 5 and Figure 6 As shown, the weighing assembly includes a plurality of weighing seats 15 installed on the upper surface of the first placement plate 10, and the weighing seats 15 correspond one-to-one to the third flange 14 and are fixed by screws. A display screen 16 is installed on the upper surface of the first placement plate 10, and the display screen 16 is electrically connected to the weighing seat 15. The weighing seat 15 can weigh the feeding barrel 23 and the raw materials therein, and transmit the obtained data to the display screen 16, and then the display screen 16 can display the weight.

[0039] Further, such as Figure 5-7As shown, the counterweight assembly includes a round rod 17 fixedly connected to the upper surface of the second placement plate 11, and the outer surface of the round rod 17 is sleeved with a counterweight block 18. The weight of the counterweight block 18 can be increased or decreased accordingly according to the amount of raw materials that need to be input. For example, when the weight of the raw materials inside the feeding barrel 23 is 200 kg, and the weight of the raw materials that need to be input is 100-120 kg, the weight of the counterweight block 18 can be set to 100 kg. After the specified weight of raw materials is input, the weight of the counterweight block 18 will be greater than the weight of the raw materials, and the counterweight block 18 will press the second placement plate 11 to rotate downward. The downward rotation of the second placement plate 11 can drive the first placement plate 10 to rotate upward, and the downward rotation of the second placement plate 11 will cause the position of the sensor 20 to shift and receive no light, thereby controlling the solenoid valve to close and stop feeding.

[0040] Further, such as Figure 2-4 As shown, a stirring mechanism is provided on the barrel cover 4, and the stirring mechanism includes a motor 24 installed on the top of the barrel cover 4, and the output end of the motor 24 is fixedly connected to a rotating shaft 25, and the end of the rotating shaft 25 away from the motor 24 passes through the barrel cover 4 and extends into the interior of the mixing barrel 1, and the outer surface of the rotating shaft 25 is fixedly connected to a circular baffle 28, and the upper surface of the circular baffle 28 is in contact with the inner top wall of the barrel cover 4, and the inside of the circular baffle 28 is provided with an arc-shaped feeding trough 29 adapted to the feeding hole 32. When the first placement plate 10 is parallel to the barrel cover 4, and the guide pipe 12 is aligned with the feeding hole 32, the arc-shaped feeding trough 29 is controlled to rotate. When it reaches the bottom of the feeding hole 32, the raw materials inside the feeding barrel 23 can fall into the interior of the mixing barrel 1 through the guide pipe 12, the feeding hole 32 and the arc-shaped feeding trough 29 in turn. When the arc-shaped feeding trough 29 moves away from under the feeding hole 32, the circular baffle 28 can block the feeding hole 32 to prevent it from continuing to discharge materials. It can be seen that only when the arc-shaped feeding trough 29 moves to the bottom of a certain feeding hole 32, that feeding hole 32 can be discharged, thereby achieving the goal of evenly adding various types of raw materials into the interior of the mixing barrel 1 in multiple times, thereby making the raw materials more evenly mixed and improving the processing quality of concrete.

[0041] Further, such as Figure 3 As shown, the stirring assembly also includes a support ring 30 fixedly connected to the inside of the barrel cover 4, and the upper surface of the support ring 30 is in contact with the bottom surface of the circular baffle 28, and the bottom surface of the circular baffle 28 is fixedly connected with a rotating ring 31, and the rotating ring 31 is rotatably connected to the inside of the support ring 30. The inside of the support ring 30 is provided with a track groove adapted to the rotating ring 31. Through the cooperation between the support ring 30 and the rotating ring 31, the circular baffle 28 can be supported without affecting the rotation of the circular baffle 28, thereby improving the stability of the circular baffle 28 during use.

[0042] Further, such as Figure 3 and Figure 4 As shown, the outer surface of the rotating shaft 25 located in the inner part of the mixing barrel 1 is fixedly connected with the second stirring blade 27 and the first stirring blade 26, and the first stirring blade 26 is located above the second stirring blade 27. The motor 24 is started, and the motor 24 can drive the rotating shaft 25 to rotate. The rotation of the rotating shaft 25 can drive the first stirring blade 26, the second stirring blade 27 and the circular baffle 28 to rotate. The first stirring blade 26 and the second stirring blade 27 can rotate to stir the raw materials inside the mixing barrel 1. The rotation of the circular baffle 28 can evenly add all kinds of raw materials into the interior of the mixing barrel 1, thereby realizing stirring and adding materials, and then the raw materials can be mixed more evenly.

[0043] Embodiment 2: An automatic concrete proportioning method for building construction, the proportioning method is implemented by using the automatic concrete proportioning device for building construction, and comprises the following steps: When mixing concrete, various raw materials are added to the inside of each feeding barrel 23, and the weight of the raw materials is weighed by the weighing assembly; then the weight of the counterweight block 18 is increased or decreased accordingly according to the amount of raw materials that need to be put in, and then the motor 24 is started, and the motor 24 drives the rotating shaft 25 to rotate, and the rotation of the rotating shaft 25 drives the first stirring blade 26, the second stirring blade 27, the circular baffle 28 and the arc-shaped feeding trough 29 to rotate; When the arc-shaped feeding trough 29 rotates to the bottom of the feeding hole 32, the raw materials in the feeding cylinder 23 fall into the mixing barrel 1 through the guide pipe 12, the feeding hole 32 and the arc-shaped feeding trough 29 in sequence, and when the arc-shaped feeding trough 29 moves away from the bottom of the feeding hole 32, the circular baffle 28 can block the feeding hole 32 to prevent further feeding, and the first stirring blade 26 and the second stirring blade 27 rotate to stir the raw materials in the mixing barrel 1; After the specified weight of raw materials is added, the weight of the counterweight 18 will be greater than the weight of the raw materials, so that the counterweight 18 will press the second placement plate 11 to rotate downward. The downward rotation of the second placement plate 11 can drive the first placement plate 10 to rotate upward. The downward rotation of the second placement plate 11 will cause the position of the sensor 20 to shift and fail to receive light, thereby controlling the solenoid valve to close and stop feeding. After the mixing of the raw materials is completed, the valve is opened, and then the concrete mixed inside the mixing barrel 1 can be discharged through the discharge pipe 3.

Claims

1. An automatic concrete proportioning device for construction, characterized in that: The mixing barrel (1) comprises two symmetrical supporting legs (2) fixedly connected to the outer surface of the mixing barrel (1) near the bottom, a discharge pipe (3) fixedly connected to the bottom of the mixing barrel (1), a valve installed on the discharge pipe (3), a barrel cover (4) sleeved on the top of the mixing barrel (1), a plurality of feeding mechanisms installed on the outer surface of the barrel cover (4), the feeding mechanism comprising a feeding cylinder (23) and a supporting seat (7), the supporting seat (7) fixedly connected to the outer surface of the barrel cover (4), and a U-shaped seat (8) fixedly connected to the upper surface of the supporting seat (7) The U-shaped seat (8) is rotatably connected to a rotating roller (9) inside, and the outer surface of the rotating roller (9) is fixedly connected to a first placement plate (10) and a second placement plate (11), and the first placement plate (10) and the second placement plate (11) are arranged opposite to each other, and a support assembly for supporting the first placement plate (10) is arranged below the first placement plate (10), a weighing assembly is installed on the upper surface of the first placement plate (10), and a counterweight assembly is installed on the upper surface of the second placement plate (11), and the feeding barrel (23) and the weighing assembly are connected via a connecting assembly.

2. The automatic concrete proportioning device for construction according to claim 1, characterized in that: The bottom of the feeding barrel (23) is fixedly connected to a material guide pipe (12), and one end of the material guide pipe (12) away from the feeding barrel (23) passes through the first placement plate (10) and extends to the outside of the first placement plate (10). A solenoid valve is installed on the material guide pipe (12). The top of the barrel cover (4) is provided with a feeding hole (32) adapted to the material guide pipe (12). The second placement plate (11) and the support seat (7) are both installed with a sensor (20) on a side close to each other, and the sensor (20) is electrically connected to the solenoid valve. The barrel cover (4) is provided with a The stirring mechanism comprises a motor (24) mounted on the top of a barrel cover (4), the output end of the motor (24) being fixedly connected to a rotating shaft (25), and the end of the rotating shaft (25) away from the motor (24) passes through the barrel cover (4) and extends into the interior of the mixing barrel (1), the outer surface of the rotating shaft (25) being fixedly connected to a circular baffle (28), the upper surface of the circular baffle (28) being in contact with the inner top wall of the barrel cover (4), and the interior of the circular baffle (28) being provided with an arc-shaped feeding trough (29) adapted to the feeding hole (32).

3. The automatic concrete proportioning device for construction according to claim 2, characterized in that: A first flange (5) is fixedly connected to a position near the bottom of the outer surface of the barrel cover (4), and a second flange (6) is fixedly connected to a position near the top of the outer surface of the mixing barrel (1), and the second flange (6) is connected to the first flange (5) via screws.

4. The automatic concrete proportioning device for construction according to claim 2, characterized in that: The feeding cylinder (23) is a transparent plastic cylinder with scales on the outer surface.

5. The automatic concrete proportioning device for construction according to claim 2, characterized in that: A supporting ball (19) is fixedly embedded on the bottom of the second placement plate (11).

6. The automatic concrete proportioning device for construction according to claim 2, characterized in that: The support assembly comprises a support plate (22) fixedly connected to the upper surface of the support seat (7); the support plate (22) and the U-shaped seat (8) are connected via a connecting block (21), and the connecting block (21) is fixedly connected to the upper surface of the support seat (7).

7. The automatic concrete proportioning device for construction according to claim 2, characterized in that: The connection assembly comprises a plurality of support columns (13) fixedly connected to the bottom of the feeding barrel (23), and one end of each of the support columns (13) away from the feeding barrel (23) is fixedly connected to a third flange (14).

8. The automatic concrete proportioning device for construction according to claim 7, characterized in that: The weighing assembly comprises a plurality of weighing seats (15) mounted on the upper surface of a first placement plate (10), wherein the weighing seats (15) correspond one to one with the third flange (14) and are fixed by screws, and a display screen (16) is mounted on the upper surface of the first placement plate (10), and the display screen (16) and the weighing seats (15) are electrically connected.

9. The automatic concrete proportioning device for construction according to claim 2, characterized in that: The counterweight assembly comprises a round rod (17) fixedly connected to the upper surface of the second placement plate (11), and a counterweight block (18) is sleeved on the outer surface of the round rod (17).

10. The automatic concrete proportioning device for construction according to claim 2, characterized in that: The stirring assembly further comprises a support ring (30) fixedly connected to the inside of the barrel cover (4), and the upper surface of the support ring (30) is in contact with the bottom surface of the circular baffle (28), and the bottom surface of the circular baffle (28) is fixedly connected to a rotating ring (31), and the rotating ring (31) is rotatably connected to the inside of the support ring (30).

11. The automatic concrete proportioning device for construction according to claim 2, characterized in that: The outer surface of the rotating shaft (25) located inside the mixing barrel (1) is fixedly connected to a second stirring blade (27) and a first stirring blade (26), and the first stirring blade (26) is located above the second stirring blade (27).

12. An automatic concrete proportioning method for building construction, characterized in that: The proportioning method is implemented by using the automatic proportioning device for concrete used in construction as claimed in any one of claims 1 to 11, and comprises the following steps: When mixing concrete, various raw materials are added to the interior of each feeding barrel (23), and the weight of the raw materials is weighed by a weighing assembly; then the weight of the counterweight block (18) is increased or decreased accordingly according to the amount of raw materials that need to be added, and then the motor (24) is started, and the motor (24) drives the rotating shaft (25) to rotate, and the rotation of the rotating shaft (25) drives the first stirring blade (26), the second stirring blade (27), the circular baffle (28) and the arc-shaped feeding trough (29) to rotate; When the arc-shaped feeding trough (29) rotates to the bottom of the feeding hole (32), the raw materials in the feeding cylinder (23) sequentially pass through the material guide pipe (12), the feeding hole (32) and the arc-shaped feeding trough (29) and fall into the mixing barrel (1); when the arc-shaped feeding trough (29) moves away from the bottom of the feeding hole (32), the circular baffle (28) blocks the feeding hole (32) to prevent further feeding, and the first stirring blade (26) and the second stirring blade (27) rotate to stir the raw materials in the mixing barrel (1); After a specified weight of raw materials is added, the weight of the counterweight (18) will be greater than the weight of the raw materials, so that the counterweight (18) will press the second placement plate (11) to rotate downward. The downward rotation of the second placement plate (11) can drive the first placement plate (10) to rotate upward. The downward rotation of the second placement plate (11) will cause the position of the sensor (20) to shift and fail to receive light, thereby controlling the solenoid valve to close and stop feeding. After the mixing of the raw materials is completed, the valve is opened, and the concrete mixed inside the mixing barrel (1) can be discharged through the discharge pipe (3).

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