Concrete stirring device for building construction

Abstract

The utility model relates to the technical field of building construction, in particular to a concrete stirring device for building construction. Through the arrangement of the sieve plate assembly, raw material sand is filtered while being added into the feeding pipe, large-particle stones, impurities or foreign matters are intercepted by the sieve plate after the raw material sand passes through the sieve plate, and the large-particle stones, impurities or foreign matters intercepted on the sieve plate slide onto the solid plate through the through holes; the purpose of controlling the sieve plate assembly to rotate and position is achieved through the arrangement of the electric push rod I, the arrangement of the vibration assembly prevents materials from being stacked on the sieve net plate, raw material sand can smoothly pass through the sieve net plate, and the sand screening device is reasonable in structure, convenient to use and high in practicability. The raw material sand can be filtered in the raw material sand adding process, manual raw material sand filtering work is not needed any more, the labor intensity of workers is relieved, waste of raw materials is avoided, and the working efficiency of concrete production is improved.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a concrete mixing device for building construction. Background Technology

[0002] Concrete is one of the main materials in civil engineering. Concrete is generally composed of cementitious materials, aggregates and water. It is a kind of artificial stone material that is uniformly mixed, compacted and shaped, and then cured and hardened.

[0003] Concrete has a wide range of uses in the construction industry, such as building structures, roads, and bridges. Concrete has the characteristics of high strength, good durability, and strong plasticity. In building structures, concrete can provide stable support and ensure the safety of buildings.

[0004] Sand is generally used as fine aggregate in concrete. Sand usually forms the skeleton of concrete together with gravel. Commonly used types of sand in concrete include river sand, manufactured sand, desalinated sea sand, or sand made from treated waste residue and tailings.

[0005] Before sand is added to concrete mixing equipment, it generally needs to be screened to remove large stones, impurities or foreign objects from the sand raw material. The existing sand screening process usually involves setting up a screen next to the raw sand pile, manually throwing the sand onto the screen, and then manually adding the filtered sand into the mixing equipment. This process is labor-intensive, inefficient, and can easily lead to waste of raw materials. Utility Model Content

[0006] The purpose of this invention is to provide a concrete mixing device for construction, which can filter the raw sand during the sand addition process, eliminating the need for manual sand filtration, reducing labor intensity, avoiding waste of raw materials, and improving the efficiency of concrete production.

[0007] To achieve the aforementioned technical effects, this utility model provides a concrete mixing device for construction, comprising a base, a mixing drum, a discharge pipe, an inlet pipe, and an inlet support. The mixing drum is rotatably connected to the base. One end of the mixing drum is fixedly connected to the discharge pipe, and the other end of the mixing drum not connected to the discharge pipe is fixedly connected to the inlet pipe. The inlet support is fixedly connected to the base, and the inlet pipe is fixedly connected to the inlet support. The inlet pipe includes an upper flange, a top inlet pipe, and a bottom inlet pipe. The upper flange is fixedly connected to the top of the top inlet pipe, the top of the bottom inlet pipe is fixedly connected to the bottom of the top inlet pipe, and the bottom of the bottom inlet pipe is fixedly connected to the mixing drum. The top and bottom inlet pipes are inclined relative to each other, with the top inlet pipe inclined to the vertical plane in the height direction. The top feed pipe has a rectangular cross-section. A through hole is provided on the rear side wall of the top feed pipe away from the mixing tank. The through hole is rectangular and is rotatably connected to a screen plate assembly. The screen plate assembly is located in the middle of the through hole along the height direction. The screen plate assembly includes a screen plate and a solid plate. The screen plate is fixedly connected to the front side of the solid plate and extends into the top feed pipe. The solid plate is located outside the top feed pipe. Side shafts are fixedly connected to both the left and right side walls of the top feed pipe. The two side shafts are coaxial and have external threads. Connecting plates III are fixedly connected to both the left and right outer walls of the top feed pipe. The two external threads pass through the two connecting plates III respectively. The connecting plates III have holes for the threads to pass through. Nuts are connected to the external thread connecting plates III.

[0008] Furthermore, an electric push rod I is rotatably connected between the screen plate assembly and the top feed pipe; a connecting plate I is fixedly connected to the bottom surface of the solid plate, and the connecting plate I is located behind the side shaft. There are two connecting plates I, which are parallel to each other. The front end of the piston rod of the electric push rod I is rotatably connected between the two connecting plates I. A rotating shaft I is inserted between the front end of the piston rod of the electric push rod I and the two connecting plates I. The front end of the piston rod of the electric push rod I is rotatably connected to the two connecting plates I through the rotating shaft I. Both connecting plates I have holes for the rotating shaft I to pass through. The front end of the piston rod of the electric push rod I has holes for the rotating shaft I to pass through. The two ends of the rotating shaft I extend out of the two connecting plates respectively. Ⅰ. A retaining ring is connected to both ends of the two connecting plates Ⅰ extending from the rotating shaft Ⅰ. A connecting plate Ⅱ is fixedly connected to the outer wall of the top feed pipe. The connecting plate Ⅱ is located below the through hole. There are two connecting plates Ⅱ, which are parallel to each other. The base of the electric push rod Ⅰ is rotatably connected between the two connecting plates Ⅱ. The rotating shaft Ⅱ is inserted between the base of the electric push rod Ⅰ and the two connecting plates Ⅱ. The electric push rod Ⅰ and the two connecting plates Ⅱ are rotatably connected through the rotating shaft Ⅱ. Both connecting plates Ⅱ have holes for the rotating shaft Ⅱ to pass through. The base of the electric push rod Ⅰ has holes for the rotating shaft Ⅱ to pass through. The two ends of the rotating shaft Ⅱ extend from the two connecting plates Ⅱ respectively. A retaining ring is connected to both ends of the rotating shaft Ⅱ extending from the two connecting plates Ⅱ.

[0009] Furthermore, a vibration assembly is connected to the bottom surface of the screen plate assembly. The vibration assembly includes a bonding plate, a spring, a motor II, a mounting cover, a turntable, and striking blocks. The bonding plate is fixedly connected to the bottom surface of the screen plate and is located at the center of the screen plate along its width direction. The width of the bonding plate is smaller than the width of the screen plate, and the length of the bonding plate is smaller than the length of the screen plate. The mounting cover is fixedly connected to the bottom surface of the screen plate and is located at the end of the screen plate away from the solid plate. The motor II is fixedly connected inside the mounting cover, and the output shaft of the motor II extends out of the mounting cover. The turntable is fixedly connected to the output shaft of the motor II extending out of the mounting cover and is located below the bonding plate. Multiple striking blocks are provided and are fixedly connected to the outer wall of the turntable. The multiple striking blocks are evenly distributed around the axis of the turntable. The upper end of the spring is fixedly connected to the bottom surface of the bonding plate, and the striking blocks are abutted against the spring.

[0010] Furthermore, an upper baffle is slidably connected to the outer wall of the rear side of the top feed pipe. The upper baffle is located behind the through hole above the screen plate assembly and blocks the through hole above the screen plate assembly. Limiting plates are fixedly connected to the left and right outer walls of the top feed pipe. The two limiting plates are parallel and have sliding grooves on their inner walls. Sliding blocks are fixedly connected to the left and right side walls of the upper baffle, and the two sliding blocks are slidably connected in the two sliding grooves respectively.

[0011] Furthermore, an electric push rod II is fixedly connected to the outer wall of the rear side of the top feed pipe. The electric push rod II is located above the upper baffle. The base of the electric push rod II is fixedly connected to the outer wall of the top feed pipe through a bracket. The piston rod end of the electric push rod II is connected to the top of the upper baffle.

[0012] Furthermore, a connecting plate IV is fixedly connected to the top surface of the upper baffle. There are two connecting plates IV, which are parallel to each other. The piston rod end of the electric push rod II is rotatably connected between the two connecting plates IV. A rotating shaft III is inserted between the piston rod end of the electric push rod II and the two connecting plates IV. The piston rod end of the electric push rod II is rotatably connected to the two connecting plates IV through the rotating shaft III. The two ends of the rotating shaft III extend out of the two connecting plates IV respectively, and a retaining ring is connected to both ends of the rotating shaft III extending out of the two connecting plates IV.

[0013] Furthermore, a lower baffle is fixedly connected to the outer wall of the rear side of the top feed pipe. The lower baffle is located behind the through hole below the screen plate assembly. The lower baffle blocks the through hole below the screen plate assembly. The bottom of the lower baffle is fixedly connected to the outer wall of the top feed pipe, and the top of the baffle is abutted against the bottom surface of the solid plate.

[0014] Furthermore, the lower baffle is made of rubber.

[0015] Furthermore, the upper baffle is made of rubber.

[0016] Furthermore, it includes a limit frame, a drive gear ring, a drive gear, and a motor. The limit frame is fixedly connected to the base, and there are two limit frames. The mixing tank is a horizontal cylindrical body, and the mixing tank is rotatably connected to the two limit frames. The drive gear ring is fixedly sleeved on the outer wall of the mixing tank, and the outer wall of the drive gear ring has teeth. The motor is fixedly connected to the base, and the drive gear is fixedly connected to the motor output shaft. The drive gear is rotatably connected to the base through a bracket, and the outer wall of the drive gear has teeth. The drive gear meshes with the drive gear ring, and there are two drive gear rings, both of which are fixedly sleeved on the outer wall of the mixing tank. There are two drive gears, and the two drive gears are rotatably connected to the base through a bracket. The two drive gears are connected through a transmission shaft, and the motor output shaft is fixedly connected to one of the two drive gears.

[0017] The beneficial effects of this utility model are as follows: This utility model achieves simultaneous filtration of raw sand as it is added to the feed pipe through the screen plate assembly. Large particles, impurities, or foreign objects are intercepted by the screen plate after passing through it, thus achieving filtration. The large particles, impurities, or foreign objects intercepted on the screen plate slide down through the through holes onto the solid plate, thereby achieving discharge. The through holes ensure that large particles, impurities, or foreign objects can be discharged, and also compensate for thickness changes at the through holes caused by the rotation of the screen plate assembly. The screen plate assembly is controlled by the electric push rod I. The purpose of rotation and positioning is to prevent material accumulation on the screen plate, allowing raw sand to pass smoothly through it. The upper baffle blocks the through holes above the screen plate assembly, preventing large stones, impurities, or foreign objects from passing through. The lower baffle blocks the through holes below the screen plate assembly, preventing filtered sand from leaking out. This invention has a reasonable structure and is easy to use. It can filter raw sand during the addition process, eliminating the need for manual sand filtration, reducing labor intensity, avoiding waste of raw materials, and improving the efficiency of concrete production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial structural cross-sectional view of the feed pipe of this utility model;

[0020] Figure 3 This utility model Figure 2 AA section view;

[0021] Figure 4 This utility model Figure 2 View from direction B;

[0022] Figure 5 This utility model Figure 2 Local magnification Figure I ;

[0023] Figure 6 This utility model Figure 5 CC section view;

[0024] Figure 7 This is a partial structural diagram of the connecting plate III of this utility model;

[0025] Figure 8 This is a partial structural diagram of the connecting plate I of this utility model;

[0026] Figure 9 This is a partial structural diagram of the connecting plate II of this utility model;

[0027] Figure 10 This is a partial structural diagram of the connecting plate IV of this utility model;

[0028] Figure 11 This is a partial structural diagram of the limiting plate of this utility model;

[0029] Figure 12 This is a schematic diagram of the sieve plate assembly of this utility model after it has been flipped downwards.

[0030] In the diagram: 1. Base; 2. Mixing tank; 3. Limiting frame; 4. Drive gear ring; 5. Drive gear; 6. Motor I; 7. Discharge pipe; 8. Feed pipe; 9. Feed support; 10. Upper flange; 11. Top feed pipe; 1001. Through hole; 12. Bottom feed pipe; 13. Screen plate assembly; 1301. Screen plate; 1302. Solid plate; 1303. Side shaft; 1304. External thread; 14. Adhesive plate 15. Spring; 16. Motor II; 17. Mounting cover; 18. Turntable; 19. Striking block; 20. Connecting plate I; 21. Connecting plate II; 22. Electric push rod I; 23. Rotating shaft I; 24. Rotating shaft II; 25. Connecting plate III; 26. Upper baffle; 27. Electric push rod II; 28. Connecting plate IV; 29. ​​Rotating shaft III; 30. Limiting plate; 3001. Slide groove; 31. Lower baffle; 32. Slider. Detailed Implementation

[0031] like Figures 1-12As shown, this utility model discloses a concrete mixing device for construction, comprising a base 1, a mixing drum 2, a discharge pipe 7, an inlet pipe 8, and an inlet support 9. The mixing drum 2 is rotatably connected to the base 1. One end of the mixing drum 2 is fixedly connected to the discharge pipe 7, and the other end of the mixing drum 2 not connected to the discharge pipe 7 is fixedly connected to the inlet pipe 8. The inlet support 9 is fixedly connected to the base 1, and the inlet pipe 8 is fixedly connected to the inlet support 9. The inlet pipe 8 includes an upper flange 10, a top inlet pipe 11, and a bottom inlet pipe 12. The upper flange 10 is fixedly connected to the top end of the top inlet pipe 11, and the top end of the bottom inlet pipe 12 is fixedly connected to the lower end of the top inlet pipe 11. The lower end of the bottom inlet pipe 12 is fixedly connected to the mixing drum 2. The top inlet pipe 11 and the bottom inlet pipe 12 are inclined relative to each other. The top inlet pipe 11 is inclined to the vertical plane in the height direction. The cross-section of the top inlet pipe 11 is rectangular, and a section is provided on the rear side wall of the top inlet pipe 11 away from the mixing drum 2. There is a through hole 1101, which is a rectangular hole. A screen plate assembly 13 is rotatably connected inside the through hole 1101. The screen plate assembly 13 is located in the middle of the through hole 1101 along the height direction. The screen plate assembly 13 includes a screen plate 1301 and a solid plate 1302. The screen plate 1301 is fixedly connected to the front side of the solid plate 1302. The screen plate 1301 extends into the top feed pipe 11, and the solid plate 1302 is located outside the top feed pipe 11. Side shafts 1303 are fixedly connected to both the left and right side walls of the top feed pipe 11. The two side shafts 1303 are coaxial and both side shafts 1303 are provided with external threads 1304. Connecting plates III 25 are fixedly connected to both the left and right outer walls of the top feed pipe 11. The two external threads 1304 pass through the two connecting plates III 25 respectively. The connecting plates III 25 are provided with holes for the threads to pass through. Nuts are connected to the external threads 1304 after connecting plates III 25.

[0032] This invention achieves simultaneous filtration of raw sand when adding it to the feed pipe 8 via the screen plate assembly 13. The screen plate assembly 13 is positioned perpendicular to the axis of the top feed pipe 11. Raw sand is added from the upper flange 10. After passing through the screen plate 1301, large stones, impurities, or foreign objects are intercepted, thus achieving filtration. The large stones, impurities, or foreign objects intercepted on the screen plate 1301 slide down through the through holes 1101 onto the solid plate 1302, thereby discharging them. If other raw materials that do not require filtration are added to the feed pipe 8, the screen plate assembly 13 is controlled to tilt downwards, thus clearing the passage for the top feed pipe 11.

[0033] The through hole 1101 is designed to ensure that large stones, impurities or foreign objects can be discharged, and to compensate for the thickness change at the through hole 1101 caused by the rotation of the screen plate assembly 13. The height of the through hole 1101 should be set to ensure that the screen plate assembly 13 will not interfere with the inner wall of the through hole 1101 when it is rotated to the uppermost and lowermost positions.

[0034] Considering the rotation and positioning of the screen plate assembly 13, an electric push rod I22 is rotatably connected between the screen plate assembly 13 and the top feed pipe 11. A connecting plate I20 is fixedly connected to the bottom surface of the solid plate 1302. The connecting plate I20 is located behind the side shaft 1303. There are two connecting plates I20, which are parallel to each other. The front end of the piston rod of the electric push rod I22 is rotatably connected between the two connecting plates I20. A rotating shaft I23 is inserted between the front end of the piston rod of the electric push rod I22 and the two connecting plates I20. The front end of the piston rod of the electric push rod I22 is rotatably connected to the two connecting plates I20 through the rotating shaft I23. Both connecting plates I20 are provided with holes for the rotating shaft I23 to pass through. The front end of the piston rod of the electric push rod I22 is provided with holes for the rotating shaft I23 to pass through. The two ends of the rotating shaft I23 extend out respectively. Two connecting plates I20 are provided, and retaining rings are connected to both ends of the rotating shaft I23 extending out of the two connecting plates I20. A connecting plate II21 is fixedly connected to the outer wall of the top feed pipe 11. The connecting plate II21 is located below the through hole 1101. There are two connecting plates II21, which are parallel to each other. The base of the electric push rod I22 is rotatably connected between the two connecting plates II21. A rotating shaft II24 is inserted between the base of the electric push rod I22 and the two connecting plates II21. The electric push rod I22 and the two connecting plates II21 are rotatably connected through the rotating shaft II24. Both connecting plates II21 have holes for the rotating shaft II24 to pass through. The base of the electric push rod I22 has holes for the rotating shaft II24 to pass through. The two ends of the rotating shaft II24 extend out of the two connecting plates II21 respectively, and retaining rings are connected to both ends of the rotating shaft II24 extending out of the two connecting plates II21.

[0035] The purpose of controlling the rotation and positioning of the screen plate assembly 13 is achieved by setting the electric push rod I22. When the electric push rod I22 extends or retracts, the two ends of the electric push rod I22 need to be rotatably connected. This utility model achieves the rotatable connection between the two ends of the electric push rod I22 by setting the connecting plate I20 and the connecting plate II21.

[0036] A vibration assembly is connected to the bottom surface of the sieve plate assembly 13. The vibration assembly includes a bonding plate 14, a spring 15, a motor 16, a mounting cover 17, a turntable 18, and a striking block 19. The bonding plate 14 is fixedly connected to the bottom surface of the sieve plate 1301 and is located at the center of the sieve plate 1301 along its width direction. The width of the bonding plate 14 is smaller than the width of the sieve plate 1301, and the length of the bonding plate 14 is smaller than the length of the sieve plate 1301. The mounting cover 17 is fixedly connected to the bottom surface of the sieve plate 1301. At the end of 1301 away from the solid plate 1302, motor II 16 is fixedly connected inside the mounting cover 17. The output shaft of motor II 16 passes through the mounting cover 17. Turntable 18 is fixedly connected to the output shaft of motor II 16 that passes through the mounting cover 17. Turntable 18 is located below the bonding plate 14. Multiple striking blocks 19 are provided. Multiple striking blocks 19 are fixedly connected to the outer wall of turntable 18. Multiple striking blocks 19 are evenly distributed around the axis of turntable 18. The upper end of spring piece 15 is fixedly connected to the bottom surface of bonding plate 14. The striking block 19 is abutted against spring piece 15.

[0037] The vibration assembly prevents material buildup on the screen plate 1301, allowing raw sand to pass smoothly through it. When in use, motor II 16 is started, and its output shaft drives the turntable 18 to rotate. As the turntable 18 rotates, the striking block 19 strikes the spring sheet 15, generating vibration. This vibration is transmitted to the screen plate 1301 through the bonding plate 14, allowing the raw sand to pass smoothly through. The spring sheet 15 can be made of spring steel, which easily generates vibration. Because the bonding plate 14 obstructs the passage of raw sand, its width should be smaller than the width of the screen plate 1301. It is generally recommended that the width of the bonding plate 14 be one-eighth to one-tenth of the width of the screen plate 1301.

[0038] An upper baffle 26 is slidably connected to the outer wall of the rear side of the top feed pipe 11. The upper baffle 26 is located behind the through hole 1101 above the screen plate assembly 13, and blocks the through hole 1101 above the screen plate assembly 13. Limiting plates 30 are fixedly connected to the left and right outer walls of the top feed pipe 11. The two limiting plates 30 are parallel, and each of the two limiting plates 30 has a sliding groove 3001 on its inner wall. Sliding blocks 32 are fixedly connected to the left and right side walls of the upper baffle 26, and the two sliding blocks 32 are slidably connected in the two sliding grooves 3001 respectively. An electric push rod II 27 is fixedly connected to the outer wall of the rear side of the top feed pipe 11. The electric push rod II 27 is located above the upper baffle 26, and the base of the electric push rod II 27 is fixedly connected to the support. On the outer wall of the top feed pipe 11, the piston rod end of the electric push rod II 27 is connected to the top of the upper baffle 26; a connecting plate IV 28 is fixedly connected to the top surface of the upper baffle 26. There are two connecting plates IV 28, which are parallel to each other. The piston rod end of the electric push rod II 27 is rotatably connected between the two connecting plates IV 28. A rotating shaft III 29 is inserted between the piston rod end of the electric push rod II 27 and the two connecting plates IV 28. The piston rod end of the electric push rod II 27 is rotatably connected to the two connecting plates IV 28 through the rotating shaft III 29. The two ends of the rotating shaft III 29 extend out of the two connecting plates IV 28 respectively, and a retaining ring is connected to both ends of the rotating shaft III 29 extending out of the two connecting plates IV 28; the upper baffle 26 is made of rubber.

[0039] The upper baffle 26 is set to block the through hole 1101 above the screen plate assembly 13, preventing large stones, impurities or foreign objects from passing through the through hole 1101 at will. After the upper baffle 26 slides upward to open the through hole 1101, large stones, impurities or foreign objects can pass through the through hole 1101. Since the top feed pipe 11 is inclined.

[0040] If the upper baffle 26 slides freely, it will not be possible to ensure that the baffle 26 is in contact with the outer wall of the top feed tube 11. To solve this technical problem, this utility model sets up a limiting plate 30, a sliding groove 3001 and a slider 32, thereby realizing the sliding guidance and limiting of the upper baffle 26, so that the baffle 26 slides in contact with the outer wall of the top feed tube 11.

[0041] This utility model achieves automatic sliding of the upper baffle 26 by setting an electric push rod II 27, thereby realizing the automatic closing and opening of the through hole 1101.

[0042] It should be noted that when the front section of the sieve plate assembly 13 rotates downward, the solid plate 1302 may interfere with the upper baffle 26. To avoid this problem, the electric push rod II 27 and the electric push rod I may be linked in the electrical control system, depending on the actual situation.

[0043] A lower baffle 31 is fixedly connected to the outer wall of the rear side of the top feed pipe 11. The lower baffle 31 is located behind the through hole 1101 below the screen plate assembly 13. The lower baffle 31 blocks the through hole 1101 below the screen plate assembly 13. The bottom of the lower baffle 31 is fixedly connected to the outer wall of the top feed pipe 11, and the top of the baffle 31 is abutted against the bottom surface of the solid plate 1302. The material of the lower baffle 31 is rubber.

[0044] This utility model uses the lower baffle 31 to block the through hole 1101 below the sieve plate assembly 13, preventing filtered sand from leaking out of the through hole 1101 below the sieve plate assembly 13. Considering the position change when the sieve plate assembly 13 rotates, the height of the lower baffle 31 needs to have a certain margin so that the top of the lower baffle 31 blocks the bottom surface of the solid plate 1302 when the sieve plate assembly 13 rotates.

[0045] This utility model also includes a limiting frame 3, a drive gear ring 4, a drive gear 5, and a motor 6. The limiting frame 3 is fixedly connected to the base 1, and there are two limiting frames 3. The mixing tank 2 is a horizontal cylindrical body, and the mixing tank 2 is rotatably connected to the two limiting frames 3. The drive gear ring 4 is fixedly sleeved on the outer wall of the mixing tank 2, and the outer wall of the drive gear ring 4 has teeth. The motor 6 is fixedly connected to the base 1, and the drive gear 5 is fixedly connected to the output shaft of the motor 6. The drive gear 5 is rotatably connected to the base 1 through a bracket, and the outer wall of the drive gear 5 has teeth. The drive gear 5 meshes with the drive gear ring 4, and there are two drive gear rings 4, both of which are fixedly sleeved on the outer wall of the mixing tank 2. There are two drive gears 5, and the two drive gears 5 are rotatably connected to the base 1 through a bracket. The two drive gears 5 are connected through a transmission shaft, and the output shaft of the motor 6 is fixedly connected to one of the two drive gears 5.

[0046] The design of the base 1, mixing tank 2, limiting frame 3, drive gear ring 4, drive gear 5, motor 6 and feeding bracket 9 of this utility model is not much different from the prior art, and will not be described in detail here.

Claims

1. A concrete mixing device for construction work, characterized by: The utility model provides a kind of stirring device, including base (1), stirring barrel (2), discharge pipe (7), feed pipe (8) and feed support (9), stirring barrel (2) is rotatably connected in base (1), stirring barrel (2) one end is fixedly connected with discharge pipe (7), and stirring barrel (2) is not connected with the one end of discharge pipe (7) and is fixedly connected with feed pipe (8), feed support (9) is fixedly connected in base (1), feed pipe (8) is fixedly connected in feed support (9), and feed pipe (8) includes upper flange (10), top feed pipe (11) and bottom feed pipe (12), upper flange (10) is fixedly connected in top feed pipe (11) top, bottom feed pipe (12) top is fixedly connected in top feed pipe (11) lower end, bottom feed pipe (12) lower end is fixedly connected in stirring barrel (2), top feed pipe (11) and bottom feed pipe (12) are mutually inclined, top feed pipe (11) is inclined with the vertical plane of height direction, top feed pipe (11) section is rectangle, and top feed pipe (11) rear side wall away from stirring barrel (2) is equipped with through hole (1101), through hole (1101) is rectangular hole, and through hole (1101) is rotatably connected with sieve plate assembly (13), sieve plate assembly (13) is arranged in the middle of through hole (1101) along height direction, sieve plate assembly (13) includes sieve net plate (1301) and solid plate (1302), sieve net plate (1301) is fixedly connected in solid plate (1302) front side, sieve net plate (1301) is inserted in top feed pipe (11) inside, solid plate (1302) is arranged in top feed pipe (11) outside, and top feed pipe (11) left and right two side walls are fixedly connected with side shaft (1303), two side shafts (1303) are coaxial, and two side shafts (1303) are equipped with external thread (1304), the left and right two outer walls of top feed pipe (11) are fixedly connected with connecting plate III (25), two external threads (1304) respectively pass through two connecting plate III (25), connecting plate III (25) is equipped with the hole for thread to pass through, and external thread (1304) connecting plate III (25) is connected with nut.

2. A concrete mixing device for construction work according to claim 1, characterized in that: The screen plate assembly (13) is rotatably connected with the top feeding pipe (11) through an electric push rod I (22); the bottom surface of the solid plate (1302) is fixedly connected with a connecting plate I (20), the connecting plate I (20) is arranged behind the side shaft (1303), the connecting plate I (20) is provided with two, the two connecting plates I (20) are parallel, the front end of the piston rod of the electric push rod I (22) is rotatably connected between the two connecting plates I (20), the front end of the piston rod of the electric push rod I (22) and the two connecting plates I (20) are jointly inserted with a rotating shaft I (23), the front end of the piston rod of the electric push rod I (22) and the two connecting plates I (20) are rotatably connected through the rotating shaft I (23), the two connecting plates I (20) are each provided with a hole through which the rotating shaft I (23) passes, the front end of the piston rod of the electric push rod I (22) is provided with a hole through which the rotating shaft I (23) passes, the two ends of the rotating shaft I (23) respectively extend out of the two connecting plates I (20), and the two ends of the rotating shaft I (23) extending out of the two connecting plates I (20) are each connected with a check ring; the outer wall of the top feeding pipe (11) is fixedly connected with a connecting plate II (21), the connecting plate II (21) is arranged below the through hole (1101), the connecting plate II (21) is provided with two, the two connecting plates II (21) are parallel, the base of the electric push rod I (22) is rotatably connected between the two connecting plates II (21), the base of the electric push rod I (22) and the two connecting plates II (21) are jointly inserted with a rotating shaft II (24), the electric push rod I (22) and the two connecting plates II (21) are rotatably connected through the rotating shaft II (24), the two connecting plates II (21) are each provided with a hole through which the rotating shaft II (24) passes, the base of the electric push rod I (22) is provided with a hole through which the rotating shaft II (24) passes, the two ends of the rotating shaft II (24) respectively extend out of the two connecting plates II (21), and the two ends of the rotating shaft II (24) extending out of the two connecting plates II (21) are each connected with a check ring.

3. A concrete mixing device for construction work according to claim 2, characterized in that: The bottom surface of the screen plate assembly (13) is connected with a vibration assembly, which comprises a matching plate (14), an elastic sheet (15), a motor II (16), a mounting cover (17), a rotating disc (18) and a knocking block (19). The matching plate (14) is fixedly connected to the bottom surface of the screen plate (1301), and is arranged at the center position of the screen plate (1301) along the width direction. The width of the matching plate (14) is smaller than that of the screen plate (1301), and the length of the matching plate (14) is smaller than that of the screen plate (1301). The mounting cover (17) is fixedly connected to the bottom surface of the screen plate (1301), and is fixedly connected to one end of the screen plate (1301) away from the solid plate (1302). The motor II (16) is fixedly connected to the inside of the mounting cover (17), and the output shaft of the motor II (16) penetrates through the mounting cover (17). The rotating disc (18) is fixedly connected to the output shaft of the motor II (16) penetrating through the mounting cover (17), and is arranged below the matching plate (14). The knocking block (19) is provided with a plurality of knocking blocks (19), which are fixedly connected to the outer wall of the rotating disc (18). The plurality of knocking blocks (19) are evenly distributed around the axis of the rotating disc (18). The upper end of the elastic sheet (15) is fixedly connected to the bottom surface of the matching plate (14), and the top of the knocking block (19) abuts against the elastic sheet (15).

4. A concrete mixing device for construction work according to any one of claims 1 to 3, characterized in that: The rear outer wall of the top feeding pipe (11) is slidably connected with an upper baffle (26), which is arranged on the rear side of the through hole (1101) above the screen plate assembly (13). The upper baffle (26) covers the through hole (1101) above the screen plate assembly (13). Limiting plates (30) are fixedly connected to the left and right outer walls of the top feeding pipe (11). The two limiting plates (30) are parallel, and the upper inner walls of the two limiting plates (30) are each provided with a sliding groove (3001). The left and right side walls of the upper baffle (26) are each fixedly connected with a sliding block (32), and the two sliding blocks (32) are respectively slidably connected in the two sliding grooves (3001).

5. A concrete mixing device for use in construction according to claim 4, characterized in that: The rear outer wall of the top feeding pipe (11) is fixedly connected with an electric push rod II (27), which is arranged above the upper baffle (26). The base of the electric push rod II (27) is fixedly connected to the outer wall of the top feeding pipe (11) through a support, and the piston rod end of the electric push rod II (27) is connected to the top of the upper baffle (26).

6. A concrete mixing device for use in construction according to claim 5, characterized in that: The top surface of the upper baffle (26) is fixedly connected with a connecting plate IV (28), which is provided with two connecting plates IV (28) parallel to each other. The piston rod end of the electric push rod II (27) is rotatably connected between the two connecting plates IV (28). The piston rod end of the electric push rod II (27) and the two connecting plates IV (28) are jointly inserted with a rotating shaft III (29). The piston rod end of the electric push rod II (27) and the two connecting plates IV (28) are rotatably connected through the rotating shaft III (29). The two ends of the rotating shaft III (29) extend out of the two connecting plates IV (28), and the two ends of the rotating shaft III (29) extending out of the two connecting plates IV (28) are each connected with a check ring.

7. A concrete mixing plant for building construction according to any one of claims 1, 2, 3, 5 or 6, characterized in that: The top feed pipe (11) rear side outer wall is fixedly connected with a lower baffle (31), the lower baffle (31) is behind the through hole (1101) below the screen plate assembly (13), the lower baffle (31) blocks the through hole (1101) below the screen plate assembly (13), the lower baffle (31) bottom is fixedly connected on the top feed pipe (11) outer wall, and the baffle (31) top abuts on the solid plate (1302) bottom surface.

8. A concrete mixing device for use in construction according to claim 7, characterized in that: The lower baffle (31) is made of rubber.

9. A concrete mixing plant for building construction according to any one of claims 5 or 6, characterised in that: The upper baffle (26) is made of rubber.

10. The concrete mixing device for construction according to claim 1, characterized in that: The device comprises a limiting frame (3), a driving gear ring (4), a driving gear (5) and a motor (6), the limiting frame (3) is fixedly connected to the base (1), the limiting frame (3) is provided with two, the stirring barrel (2) is a horizontal cylindrical barrel, the stirring barrel (2) is rotatably connected to the two limiting frames (3), the driving gear ring (4) is fixedly sleeved on the outer wall of the stirring barrel (2), the outer wall of the driving gear ring (4) is provided with a gear, the motor (6) is fixedly connected to the base (1), the driving gear (5) is fixedly connected to the output shaft of the motor (6), the driving gear (5) is rotatably connected to the base (1) through a support, the outer wall of the driving gear (5) is provided with a gear, the driving gear (5) is engaged with the driving gear ring (4), the driving gear ring (4) is provided with two, the two driving gear rings (4) are fixedly sleeved on the outer wall of the stirring barrel (2), the driving gear (5) is provided with two, the two driving gears (5) are rotatably connected to the base (1) through supports, the two driving gears (5) are connected through a transmission shaft, and the output shaft of the motor (6) is fixedly connected to one of the two driving gears (5).

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