Preparation method of concrete for constructional engineering

Abstract

The invention discloses a preparation method of concrete for constructional engineering, and belongs to the technical field of concrete preparation. A preparation method of concrete for constructional engineering comprises a stirring tank provided with a supporting plate, the supporting plate is rotationally connected with a rotating rod, the rotating rod is provided with a stirring part, the concrete stirring device further comprises two vertical plates fixedly connected to the two sides of a top opening of the stirring tank respectively, and the vertical plates are connected with dust suction hoods through elastic pieces; by starting the dust collector, raised powder can be recollected and discharged into the stirring tank in the feeding process, and meanwhile, water sprayed by the spray heads of the water shell can wrap the powder discharged into the stirring tank and fall into the inner bottom of the stirring tank, so that the dust falling effect is achieved; according to the preparation method, the surrounding environment is prevented from being polluted by raised powder, the waste of the preparation raw materials can be reduced, the matching accuracy of various raw materials is further improved, and the preparation quality of the concrete is favorably improved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete preparation, and in particular to a method for preparing concrete for construction engineering. Background Art

[0002] Concrete usually refers to artificial stone produced by mixing cement as the main cementitious material, which is often used in construction projects, with water, sand, gravel, and if necessary, chemical admixtures and mineral admixtures, and in accordance with scientific proportions, through a process of uniform mixing, dense molding, and curing and hardening.

[0003] In the existing concrete preparation process, mixing equipment is needed to mix the concrete raw materials. However, when raw materials such as cement, sand, stone, mineral admixtures, and admixtures are added to the mixing tank, a large amount of dust and powder are easily generated. These raised powders will not only pollute the surrounding environment, but also cause a waste of some of the prepared raw materials, thereby reducing the accuracy of the ratio between various raw materials, thereby affecting the preparation quality of concrete. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the powder raised during the preparation and loading of existing concrete not only pollutes the surrounding environment, but also affects the accuracy of the ratio between various raw materials, thereby affecting the quality of concrete preparation, and to propose a method for preparing concrete for construction engineering.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A method for preparing concrete for construction engineering comprises a mixing tank with a support plate installed, a rotating rod is rotatably connected to the support plate, a mixing part is arranged on the rotating rod, and further comprises: two vertical plates, which are respectively fixedly connected to two sides of the top opening of the mixing tank, wherein the vertical plates are connected to a dust hood through elastic members, a conveying part for generating negative pressure in the dust hood is arranged on the mixing tank, a jacking part is arranged on the rotating rod, and when the rotating rod rotates, the jacking part causes the dust hood to swing up and down; a water shell with a plurality of nozzles connected on the surface is fixedly connected in the mixing tank, wherein a discharge pipe is fixedly installed on the water shell, a discharge end of the discharge pipe is perpendicular to the water spraying end of the nozzle, and when negative pressure is generated in the dust hood, the conveying part causes positive pressure to be generated in the discharge pipe.

[0006] In order to mix and stir the concrete raw materials, preferably, the stirring part includes: a motor, which is fixedly connected to the support plate through a mounting shell, wherein the output end of the motor and the top end of the rotating rod are fixedly connected to a pulley connected by a belt; a pipe sleeve, which is longitudinally slidably connected to the rotating rod, wherein a reciprocating member for driving the pipe sleeve to reciprocate and rise and fall is provided on the support plate; a plurality of stirring rods, which are rotatably mounted on both sides of the surface of the pipe sleeve, wherein a driving member is provided on the pipe sleeve, and when the pipe sleeve moves up and down, the driving member causes the stirring rod to rotate forward and reverse.

[0007] In order to improve the mixing effect of concrete raw materials, the reciprocating member further includes a moving ring rotatably connected to the pipe sleeve, a reciprocating screw is rotatably connected to the support plate, the end of the reciprocating screw and the surface of the rotating rod are fixedly connected with mutually meshing gears A, and the moving ring is threadedly connected to the reciprocating screw.

[0008] In order to mix the concrete raw materials more evenly and fully, the driving member further includes two rack plates longitudinally slidably connected to the pipe sleeve, the end of the stirring rod is fixedly connected to a gear B, the gear B and the rack plate are meshed with each other, the top of the rack plate is fixedly connected to an extrusion ring, a roller is rotatably installed on the extrusion ring, and an elastic seat is arranged in the pipe sleeve.

[0009] In order to elastically support the rack plate, further, the elastic seat includes a support ring longitudinally slidably connected in the pipe sleeve, a compression spring is fixedly installed between the bottom of the support ring and the inner bottom of the pipe sleeve, and the rack plate is fixedly connected to the support ring.

[0010] In order to elastically support the dust hood, preferably, the elastic member includes a straight rod rotatably connected to the vertical plate, a torsion spring is fixedly installed between the straight rod and the vertical plate, and the dust hood is fixedly connected to the straight rod.

[0011] In order to discharge the raised powder back into the mixing tank, preferably, the conveying part includes a vacuum cleaner fixedly mounted on the mixing tank, the vacuum end of the vacuum cleaner is connected to the dust hood through a vacuum pipe, and the dust discharge end of the vacuum cleaner is connected to the top of the discharge pipe through the dust discharge pipe.

[0012] In order to increase the dust suction range of the dust hood, preferably, the pushing part includes a driving rod rotatably connected to the vertical plate, and the end of the driving rod away from the vertical plate and the surface of the rotating rod are fixedly connected with mutually meshing bevel gears, wherein an elastic cam is fixedly connected to the driving rod, and when the elastic cam rotates, the elastic cam will intermittently slide over the surface of the dust hood.

[0013] In order to vibrate the concrete during preparation, further, both sides of the inner wall of the mixing tank are fixedly connected with vibration guide plates, both sides of the support plate are longitudinally slidably connected with connecting rods, and the connecting rods are provided with tension springs, and the two ends of the tension springs are respectively fixedly connected to the connecting rods and the support plates, wherein the bottom end of the connecting rod passes through the vibration guide plate and is fixedly connected with a striker plate, and the striker plate is tightly attached to the bottom surface of the vibration guide plate through the elasticity of the tension spring, and when the elastic cam rotates, the elastic cam will intermittently slide over the top of the connecting rod.

[0014] In order to continuously discharge water into the water shell, preferably, a water tank is installed on one side of the mixing tank, and a water pump is fixedly installed on the water tank. The water pumping end of the water pump is connected to a water pumping pipe extending to the bottom of the water tank, and the water discharge end of the water pump is connected to the water shell through a water supply pipe.

[0015] Compared with the prior art, the present invention provides a method for preparing concrete for construction engineering, which has the following beneficial effects: 1. The method for preparing concrete for construction engineering can collect the raised powder during the feeding process and discharge it into the mixing tank by starting the vacuum cleaner. At the same time, the water sprayed by the nozzle of the water shell can also wrap the powder discharged into the mixing tank and drop it into the inner bottom of the mixing tank to achieve the effect of dust reduction, thereby avoiding the surrounding environment from being polluted by the raised powder, ensuring that the workers have a good working environment, and by collecting the raised powder and discharging it into the mixing tank, the waste of prepared raw materials can be reduced, thereby improving the accuracy of the ratio between various raw materials, and helping to improve the preparation quality of concrete.

[0016] 2. The method for preparing concrete for construction engineering can start the motor and drive the rotating rod and the pipe sleeve to rotate, thereby driving the stirring rod to mix and stir various added raw materials. When the rotating rod rotates, the pipe sleeve and the stirring rod can also be driven to reciprocate up and down, so that the concrete raw materials can be turned over in the mixing tank to reduce the stratification or precipitation of the concrete raw materials, thereby improving the stirring effect of the concrete raw materials.

[0017] 3. The concrete preparation method for construction engineering can drive the stirring rod to continuously rotate forward and reverse by reciprocating the pipe sleeve up and down, so as to stir the concrete raw materials more comprehensively and make the concrete raw materials more evenly and fully stirred, thereby further improving the preparation quality of the concrete.

[0018] 4. The method for preparing concrete for construction engineering can drive the elastic cam to rotate and drive the dust hood to swing up and down through the rotation of the rotating rod, which can expand the dust collection range of the dust hood, thereby improving the collection effect of raised powder. In addition, through the continuous rotation of the elastic cam, the impact plate can be driven to impact the bottom surface of the vibration guide plate, so that the vibration guide plate vibrates, and the vibration is transmitted to the mixing tank through the vibration guide plate, which can vibrate the mixed concrete raw materials, help break the bubbles and incompletely mixed lumps in the concrete, and make various concrete raw materials more evenly mixed, thereby further improving the preparation quality of concrete.

[0019] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The present invention solves the problem that the powder raised during the preparation and loading of existing concrete not only pollutes the surrounding environment, but also affects the accuracy of the ratio between various raw materials, thereby affecting the quality of concrete preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the axonometric structure from a first perspective of a method for preparing concrete for construction engineering proposed by the present invention; Figure 2 A schematic diagram of the axonometric structure from a second perspective of a method for preparing concrete for construction engineering proposed by the present invention; Figure 3 This is a schematic diagram of the cutaway axonometric structure of a mixing tank in a method for preparing concrete for construction engineering proposed by the present invention; Figure 4 A partial axonometric structural diagram of a method for preparing concrete for construction engineering proposed by the present invention Figure 1 ; Figure 5 A partial cross-sectional structure diagram of a method for preparing concrete for construction engineering proposed by the present invention Figure 1 ; Figure 6 This is a schematic diagram of the elastic member structure of a method for preparing concrete for construction engineering proposed by the present invention; Figure 7 A partial axonometric structural diagram of a method for preparing concrete for construction engineering proposed by the present invention Figure 2 ; Figure 8 A partial cross-sectional structure diagram of a method for preparing concrete for construction engineering proposed by the present invention Figure 2 ; Fig. 9 A partial axonometric structural diagram of a method for preparing concrete for construction engineering proposed by the present invention Figure 3 .

[0021] In the figure: 1. mixing tank; 2. support plate; 3. rotating rod; 4. motor; 41. pulley; 42. pipe sleeve; 5. moving circle; 51. reciprocating screw rod; 52. gear A; 6. stirring rod; 61. rack plate; 62. gear B; 63. extrusion ring; 64. roller; 65. support ring; 66. compression spring; 7. vertical plate; 71. straight rod; 72. torsion spring; 8. dust hood; 81. vacuum cleaner; 82. dust suction pipe; 83. dust discharge pipe; 9. water shell; 91. water tank; 92. water pump; 93. water pipe; 94. water suction pipe; 10. discharge pipe; 11. driving rod; 12. bevel gear; 13. elastic cam; 14. vibration guide plate; 15. connecting rod; 16. tension spring; 17. impact plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0024] Reference Figure 1-Figure 9 The embodiment of the present invention provides a method for preparing concrete for construction engineering, comprising a mixing tank 1 equipped with a support plate 2, a rotating rod 3 rotatably connected to the support plate 2, a mixing part arranged on the rotating rod 3, and further comprising: two vertical plates 7, respectively fixedly connected to the two sides of the top opening of the mixing tank 1, wherein a dust hood 8 is connected to the vertical plate 7 through an elastic member, a conveying part for generating negative pressure in the dust hood 8 is arranged on the mixing tank 1, a jacking part is arranged on the rotating rod 3, and when the rotating rod 3 rotates, the jacking part causes the dust hood 8 to swing up and down; a water shell 9 with a plurality of nozzles connected to the surface is fixedly connected in the mixing tank 1, wherein a discharge pipe 10 is fixedly installed on the water shell 9, and a discharge end of the discharge pipe 10 is perpendicular to the water spraying end of the nozzle, and when negative pressure is generated in the dust hood 8, the conveying part causes positive pressure to be generated in the discharge pipe 10.

[0025] Specifically, during use, through the setting of the conveying part, the powder raised during the feeding process can be collected again and discharged into the mixing tank 1, and the water sprayed by the nozzle of the water shell 9 can also wrap the powder discharged into the mixing tank 1 and drop it into the inner bottom of the mixing tank 1, so as to achieve the effect of dust reduction, avoid the surrounding environment from being polluted by the raised powder, ensure that the workers have a good working environment, and by collecting the raised powder and discharging it into the mixing tank 1, the waste of prepared raw materials can be reduced, thereby improving the accuracy of the ratio between various raw materials, which is helpful to improve the preparation quality of concrete, and through the setting of the stirring part, the various raw materials added to the mixing tank 1 can be fully mixed and stirred, further improving the preparation quality of concrete raw materials.

[0026] The stirring part includes: a motor 4, which is fixedly connected to the support plate 2 through a mounting shell, wherein the output end of the motor 4 and the top end of the rotating rod 3 are fixedly connected with a pulley 41 connected by a belt; a pipe sleeve 42, which is longitudinally slidably connected to the rotating rod 3, wherein a reciprocating member for driving the pipe sleeve 42 to reciprocate and rise and fall is provided on the support plate 2; a plurality of stirring rods 6, which are rotatably mounted on both sides of the surface of the pipe sleeve 42, wherein a driving member is provided on the pipe sleeve 42, and when the pipe sleeve 42 moves up and down, the driving member causes the stirring rod 6 to rotate forward and reverse.

[0027] Specifically, when in use, by starting the motor 4, the output end of the motor 4 drives the pulley 41 and the rotating rod 3 to rotate, and drives the pipe sleeve 42 and the stirring rod 6 to rotate in the stirring tank 1, so as to mix and stir various added raw materials.

[0028] The reciprocating member includes a moving ring 5 rotatably connected to the pipe sleeve 42, a reciprocating screw 51 rotatably connected to the support plate 2, the end of the reciprocating screw 51 and the surface of the rotating rod 3 are fixedly connected with mutually meshing gears A52, and the moving ring 5 is threadedly connected to the reciprocating screw 51.

[0029] Specifically, when the rotating rod 3 rotates, it also drives the gear A52 and the reciprocating screw 51 to rotate. Under the action of the thread, the moving circle 5 drives the pipe sleeve 42 and the stirring rod 6 to reciprocate up and down, which can make the concrete raw materials in the mixing tank 1 be turned over to reduce the stratification or sedimentation of the concrete raw materials, thereby improving the stirring effect of the concrete raw materials.

[0030] The driving member includes two rack plates 61 longitudinally slidably connected to the pipe sleeve 42, the end of the stirring rod 6 is fixedly connected to a gear B62, the gear B62 and the rack plate 61 are meshed with each other, the top of the rack plate 61 is fixedly connected to an extrusion ring 63, a roller 64 is rotatably mounted on the extrusion ring 63, and an elastic seat is arranged in the pipe sleeve 42.

[0031] Specifically, when the pipe sleeve 42 moves upward, it also drives the extrusion ring 63 and the roller 64 to move together, so that the roller 64 contacts the bottom surface of the support plate 2, and at the same time squeezes the extrusion ring 63, so that the rack plate 61 shrinks and moves into the pipe sleeve 42, and at the same time squeezes the elastic seat. The contraction movement of the rack plate 61 can drive the gear B62 and the stirring rod 6 to rotate. When the pipe sleeve 42 moves downward, the elastic seat makes the rack plate 61 move upward and reset, and drives the stirring rod 6 to rotate in the opposite direction. The reciprocating lifting and lowering of the pipe sleeve 42 can drive the stirring rod 6 to continuously rotate forward and reverse, so that the concrete raw materials can be stirred more comprehensively, and the concrete raw materials can be stirred more evenly and fully, thereby improving the preparation quality of the concrete.

[0032] The elastic seat includes a support ring 65 longitudinally slidably connected in the pipe sleeve 42 , a compression spring 66 is fixedly installed between the bottom of the support ring 65 and the inner bottom of the pipe sleeve 42 , and the rack plate 61 is fixedly connected to the support ring 65 .

[0033] Specifically, when the rack plate 61 contracts and moves into the pipe sleeve 42 , the support ring 65 and the compression spring 66 are compressed. When the pipe sleeve 42 moves downward, the elastic force of the compression spring 66 can move the rack plate 61 upward and reset.

[0034] The elastic member includes a straight rod 71 rotatably connected to the vertical plate 7 , a torsion spring 72 is fixedly installed between the straight rod 71 and the vertical plate 7 , and the dust cover 8 is fixedly connected to the straight rod 71 .

[0035] Specifically, when in use, the straight rod 71 and the torsion spring 72 are provided to elastically support the dust hood 8 .

[0036] The conveying part includes a vacuum cleaner 81 fixedly mounted on the mixing tank 1 , the vacuum end of the vacuum cleaner 81 is connected to the dust hood 8 through a vacuum pipe 82 , and the dust discharge end of the vacuum cleaner 81 is connected to the top of the discharge pipe 10 through a dust discharge pipe 83 .

[0037] Specifically, when in use, by starting the vacuum cleaner 81, a continuous negative pressure is generated in the dust hood 8, so that the raised powder can be sucked into the dust hood 8 during the loading process, and discharged into the discharge pipe 10 through the vacuum pipe 82 and the dust discharge pipe 83, and discharged into the mixing tank 1 through the discharge pipe 10, and water is sprayed out through multiple nozzles on the water shell 9, which can play a role in dust reduction, so that the powder falls into the inner bottom of the mixing tank 1, avoiding the surrounding environment from being polluted by the raised powder, and also reducing the waste of prepared raw materials.

[0038] The pushing part includes a driving rod 11 rotatably connected to the vertical plate 7, and one end of the driving rod 11 away from the vertical plate 7 and the surface of the rotating rod 3 are fixedly connected with mutually meshing bevel gears 12, wherein an elastic cam 13 is fixedly connected to the driving rod 11, and when the elastic cam 13 rotates, the elastic cam 13 will intermittently slide over the surface of the dust hood 8.

[0039] Specifically, when the rotating rod 3 rotates, it also drives the bevel gear 12, the driving rod 11 and the elastic cam 13 to rotate. Through the continuous rotation of the elastic cam 13, the dust hood 8 can be driven to swing up and down, which can expand the dust collection range of the dust hood 8, thereby improving the collection effect of the raised powder.

[0040] Vibration guide plates 14 are fixedly connected to both sides of the inner wall of the mixing tank 1, and connecting rods 15 are longitudinally slidably connected to both sides of the support plate 2. A tension spring 16 is sleeved on the connecting rod 15, and both ends of the tension spring 16 are fixedly connected to the connecting rod 15 and the support plate 2 respectively, wherein the bottom end of the connecting rod 15 passes through the vibration guide plate 14 and is fixedly connected to a striker plate 17, and the striker plate 17 is tightly attached to the bottom surface of the vibration guide plate 14 through the elasticity of the tension spring 16, and when the elastic cam 13 rotates, the elastic cam 13 will intermittently slide over the top of the connecting rod 15.

[0041] Specifically, when the elastic cam 13 rotates, the connecting rod 15 is squeezed by the top angle of the elastic cam 13, so that the connecting rod 15 drives the impact plate 17 to move downward and stretch the tension spring 16. When the top angle of the elastic cam 13 is separated from the surface of the connecting rod 15, the elastic force of the tension spring 16 causes the connecting rod 15 to quickly reset upward and drive the impact plate 17 to impact the bottom surface of the vibration guide plate 14, so that the vibration guide plate 14 vibrates, and the vibration is transmitted to the mixing tank 1 through the vibration guide plate 14, which can vibrate the mixed concrete raw materials, help break the bubbles and incompletely mixed lumps in the concrete, and make various concrete raw materials more evenly mixed, thereby further improving the preparation quality of the concrete.

[0042] A water tank 91 is installed on one side of the mixing tank 1, and a water pump 92 is fixedly installed on the water tank 91. The water pumping end of the water pump 92 is connected to a water pumping pipe 94 extending to the bottom of the water tank 91, and the discharge end of the water pump 92 is connected to the water shell 9 through a water pipe 93.

[0043] Specifically, when in use, by starting the water pump 92 , the water in the water tank 91 can be discharged into the water shell 9 through the water suction pipe 94 and the water delivery pipe 93 .

[0044] Working principle: During the use of the concrete preparation method for construction engineering, firstly, cement, sand, stone, mineral admixtures, admixtures and other concrete raw materials are added into the mixing tank 1. Meanwhile, during the feeding process, the water pump 92, the motor 4 and the vacuum cleaner 81 can be started. The water in the water tank 91 can be continuously discharged into the water shell 9 through the water pump 92, and sprayed out through the multiple nozzles of the water shell 9, so as to add water into the mixing tank 1. At the same time, the inner wall of the mixing tank 1 and the stirring rod 6 can be washed, so that the sprayed water can take away the raw materials attached to the inner wall of the mixing tank 1 and the stirring rod 6. Furthermore, by starting the vacuum cleaner 81, a continuous negative pressure can be generated in the dust hood 8, so that the raised powder can be sucked into the dust hood 8 during the feeding process, and discharged into the discharge pipe 10 through the vacuum pipe 82 and the dust discharge pipe 83, and then discharged into the mixing tank 1 through the discharge pipe 10. At the same time, the water sprayed by the nozzle of the water shell 9 can also wrap the discharged powder and drop it into the inner bottom of the mixing tank 1 to achieve the effect of dust reduction, thereby avoiding the surrounding environment from being polluted by the raised powder, ensuring that the workers have a good working environment, and by collecting the raised powder and discharging it into the mixing tank 1, the waste of prepared raw materials can be reduced, thereby improving the accuracy of the ratio between various raw materials, which is conducive to improving the preparation quality of concrete; Furthermore, by starting the motor 4, the output end of the motor 4 drives the pulley 41 and the rotating rod 3 to rotate, and drives the pipe sleeve 42 and the stirring rod 6 to rotate in the stirring tank 1, so that various raw materials added can be mixed and stirred; When the rotating rod 3 rotates, it also drives the gear A52 and the reciprocating screw 51 to rotate. Under the action of the thread, the moving ring 5 drives the pipe sleeve 42 and the stirring rod 6 to reciprocate up and down, which can make the concrete raw materials in the mixing tank 1 be turned over to reduce the stratification or precipitation of the concrete raw materials, thereby improving the mixing effect of the concrete raw materials; At the same time, when the pipe sleeve 42 moves upward, it also drives the extrusion ring 63 and the roller 64 to move together, so that the roller 64 contacts the bottom surface of the support plate 2, and at the same time squeezes the extrusion ring 63, so that the rack plate 61 shrinks and moves into the pipe sleeve 42, and at the same time compresses the support ring 65 and the compression spring 66. The shrinkage movement of the rack plate 61 can drive the gear B62 and the stirring rod 6 to rotate. When the pipe sleeve 42 moves downward, the elastic force of the compression spring 66 causes the rack plate 61 to move upward and reset, and drives the stirring rod 6 to rotate in the opposite direction. The reciprocating lifting and lowering of the pipe sleeve 42 can drive the stirring rod 6 to continuously rotate forward and reverse, so that the concrete raw materials can be more comprehensively stirred, and the concrete raw materials can be stirred more evenly and fully, thereby further improving the preparation quality of the concrete. In addition, during the feeding process, when the rotating rod 3 rotates, it also drives the bevel gear 12, the driving rod 11 and the elastic cam 13 to rotate. Through the continuous rotation of the elastic cam 13, the dust hood 8 can be driven to swing up and down, which can expand the dust collection range of the dust hood 8, thereby improving the collection effect of the raised powder. In the preparation process, when the raw materials of the concrete are added, the vacuum cleaner 81 and the water pump 92 can be turned off.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for preparing concrete for construction engineering, comprising a mixing tank (1) equipped with a support plate (2), characterized in that: The support plate (2) is rotatably connected to a rotating rod (3), and the rotating rod (3) is provided with a stirring portion, and further comprises: Two vertical plates (7) are respectively fixedly connected to the two sides of the top opening of the mixing tank (1). The vertical plate (7) is connected to a dust hood (8) via an elastic member, the mixing tank (1) is provided with a conveying portion for generating negative pressure in the dust hood (8), and the rotating rod (3) is provided with a pushing portion, and when the rotating rod (3) rotates, the pushing portion causes the dust hood (8) to swing up and down; A water shell (9) having a plurality of nozzles connected to its surface is fixedly connected to the mixing tank (1). A discharge pipe (10) is fixedly mounted on the water shell (9), and a discharge end of the discharge pipe (10) is perpendicular to a water spray end of the nozzle. When negative pressure is generated in the dust hood (8), the conveying part will cause positive pressure to be generated in the discharge pipe (10).

2. A method for preparing concrete for construction engineering according to claim 1, characterized in that: The stirring part comprises: The motor (4) is fixedly connected to the support plate (2) via a mounting shell. Wherein, the output end of the motor (4) and the top end of the rotating rod (3) are both fixedly connected to a pulley (41) connected via a belt; The sleeve (42) is longitudinally slidably connected to the rotating rod (3). Wherein, a reciprocating member for driving the pipe sleeve (42) to reciprocate and rise and fall is provided on the support plate (2); A plurality of stirring rods (6) are rotatably mounted on both sides of the surface of the tube sleeve (42). Wherein, a driving member is provided on the pipe sleeve (42), and when the pipe sleeve (42) moves up and down, the driving member causes the stirring rod (6) to rotate forward and reverse.

3. A method for preparing concrete for construction engineering according to claim 2, characterized in that: The reciprocating member comprises a moving ring (5) rotatably connected to a pipe sleeve (42); a reciprocating screw rod (51) is rotatably connected to the support plate (2); an end of the reciprocating screw rod (51) and a surface of a rotating rod (3) are fixedly connected to mutually meshing gears A (52); and the moving ring (5) is threadedly connected to the reciprocating screw rod (51).

4. A method for preparing concrete for construction engineering according to claim 2, characterized in that: The driving member comprises two rack plates (61) longitudinally slidably connected to the pipe sleeve (42); a gear B (62) is fixedly connected to the end of the stirring rod (6); the gear B (62) and the rack plate (61) are meshed with each other; an extrusion ring (63) is fixedly connected to the top end of the rack plate (61); a roller (64) is rotatably mounted on the extrusion ring (63); and an elastic seat is arranged in the pipe sleeve (42).

5. A method for preparing concrete for construction engineering according to claim 4, characterized in that: The elastic seat comprises a support ring (65) longitudinally slidably connected in the pipe sleeve (42), a compression spring (66) is fixedly installed between the bottom of the support ring (65) and the inner bottom of the pipe sleeve (42), and the rack plate (61) is fixedly connected to the support ring (65).

6. A method for preparing concrete for construction engineering according to claim 1, characterized in that: The elastic member comprises a straight rod (71) rotatably connected to the vertical plate (7), a torsion spring (72) is fixedly installed between the straight rod (71) and the vertical plate (7), and the dust cover (8) is fixedly connected to the straight rod (71).

7. A method for preparing concrete for construction engineering according to claim 1, characterized in that: The conveying section comprises a dust collector (81) fixedly mounted on the mixing tank (1); a dust suction end of the dust collector (81) is connected to a dust hood (8) via a dust suction pipe (82); and a dust discharge end of the dust collector (81) is connected to a top end of a discharge pipe (10) via a dust discharge pipe (83).

8. A method for preparing concrete for construction engineering according to claim 1, characterized in that: The push-up portion comprises a driving rod (11) rotatably connected to the vertical plate (7), and an end of the driving rod (11) away from the vertical plate (7) and a surface of the rotating rod (3) are both fixedly connected with mutually meshing bevel gears (12). Wherein, an elastic cam (13) is fixedly connected to the driving rod (11), and when the elastic cam (13) rotates, the elastic cam (13) will intermittently slide across the surface of the dust cover (8).

9. A method for preparing concrete for construction engineering according to claim 8, characterized in that: Vibration guide plates (14) are fixedly connected to both sides of the inner wall of the mixing tank (1), and connecting rods (15) are longitudinally slidably connected to both sides of the support plate (2). A tension spring (16) is sleeved on the connecting rod (15), and both ends of the tension spring (16) are fixedly connected to the connecting rod (15) and the support plate (2), respectively. The bottom end of the connecting rod (15) passes through the vibration guide plate (14) and is fixedly connected to a striker plate (17); the striker plate (17) is tightly attached to the bottom surface of the vibration guide plate (14) by the elasticity of a tension spring (16); when the elastic cam (13) rotates, the elastic cam (13) intermittently slides over the top end of the connecting rod (15).

10. A method for preparing concrete for construction engineering according to claim 1, characterized in that: A water tank (91) is installed on one side of the mixing tank (1), and a water pump (92) is fixedly installed on the water tank (91); a water pump end of the water pump (92) is connected to a water pump pipe (94) extending to the bottom of the water tank (91), and a water discharge end of the water pump (92) is connected to the water shell (9) via a water delivery pipe (93).

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