Concrete preparation raw material mixing method

Abstract

The invention relates to the technical field of concrete preparation, in particular to a concrete preparation raw material mixing method, mixing equipment comprises a support, fixing plates which are symmetrically arranged are fixedly mounted on the support, a stirring barrel is fixedly mounted on the fixing plates, and a feeding tank and a storage tank which are communicated with the stirring barrel are fixedly mounted on the stirring barrel; the driving assembly is arranged on the support, a rotating mechanism connected with the driving assembly and the stirring barrel is arranged on the fixing plate, a plurality of stirring blades which are connected with the rotating mechanism and are circumferentially distributed at equal intervals are arranged in the stirring barrel, and the driving assembly can drive the stirring blades to rotate through the rotating mechanism; the feeding regulation and control mechanism is arranged in the feeding tank and connected with the rotating mechanism, and the feeding regulation and control mechanism can act when the raw materials are added into the feeding tank; and the conduction adjusting mechanism is arranged in the storage tank and is connected with the feeding tank and the feeding regulation and control mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of concrete preparation, in particular to a method for mixing raw materials for concrete preparation. Background Art

[0002] Concrete preparation technology mainly includes the calculation of concrete strength and concrete mixing. It is an important part of concrete engineering. The preparatory work before construction is a very important factor in the success of concrete preparation. Construction preparation includes the preparation of materials, the preparation of machinery and the examination of working conditions.

[0003] In this regard, Chinese patent CN115570681B proposes a method for mixing raw materials for preparing concrete, the method comprising a mixing device, the mixing device comprising a base and a support plate fixed on the base; a mixing mechanism, arranged on the base, the mixing mechanism comprising a mixing assembly and a mixing barrel, a symmetrically arranged feeding hopper is fixed on the side of the mixing barrel away from the base, the mixing assembly can mix the material entering the mixing barrel through the feeding hopper, the mixing barrel is provided with an adjustment assembly, the adjustment assembly drives the mixing mechanism to cooperate with the mixing barrel to clean the inner wall of the mixing barrel; a conveying assembly, arranged on the support plate, the support plate is also provided with a feeding mechanism connected to the conveying assembly, the feeding mechanism comprises a storage box and a feeding assembly, the conveying assembly conveys the material in the storage box to the feeding hopper through the feeding assembly, however, in actual use, when the rate of adding raw materials to the mixing barrel increases, if the original stirring rate is still maintained, the problem of incomplete stirring may occur, resulting in uneven mixing between the raw materials. Summary of the invention

[0004] The object of the present invention is to provide a method for mixing raw materials for preparing concrete, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: The method for mixing raw materials for preparing concrete comprises the following steps: Step 1: Weigh the raw materials required for preparing concrete according to the proportion for subsequent production and use; Step 2: Add the weighed raw materials into the mixing device, and under the action of the mixing device, according to the raw material addition rate, another raw material can be added in proportion to ensure that the ratio of the raw materials is within the required range, and the raw materials are mixed under the action of the mixing device; Step 3: If the raw material addition rate changes, the mixing equipment can adaptively adjust the mixing rate of the raw materials to ensure that the concrete is always prepared at the optimal mixing strength; Step 4: Once mixing is complete, the concrete can be removed from the mixing equipment and introduced into the pre-prepared mold.

[0006] As a further solution of the present invention: the mixing device comprises: A bracket, on which a symmetrically arranged fixing plate is fixedly mounted, on which a mixing barrel is fixedly mounted, and on which a feeding tank and a storage tank connected to the mixing barrel are fixedly mounted; A driving assembly is arranged on the bracket, a rotating mechanism connected to the driving assembly and the mixing barrel is arranged on the fixing plate, a plurality of stirring blades connected to the rotating mechanism and equidistantly distributed on a circumference are arranged in the mixing barrel, and the driving assembly can drive the stirring blades to rotate through the rotating mechanism to mix the raw materials in the mixing barrel; A feeding regulating mechanism, which is arranged in the feeding tank and connected to the rotating mechanism, and the feeding regulating mechanism can be activated when the raw materials are added into the feeding tank to adjust the conduction state of the feeding tank, and adjust the rotation speed of the stirring blade through the rotating mechanism; The conduction adjustment mechanism is arranged in the storage tank and connected to the feeding tank and the feeding adjustment mechanism. The conduction adjustment mechanism can be activated when the feeding adjustment mechanism moves to adjust the conduction state of the storage tank and transport the material in the storage tank to the mixing barrel.

[0007] As a further solution of the present invention: the driving assembly includes a motor fixedly mounted on the bracket, a transmission rod connected to the output shaft of the motor is rotatably mounted on the bracket, a belt is sleeved on the transmission rod, and the belt is connected to the rotating mechanism.

[0008] As a further solution of the present invention: the rotating mechanism includes a rotating rod rotatably mounted on the fixed plate and passing through the mixing barrel, a movable sleeve movably mounted on the rotating rod, a movable cone disk fixedly mounted on the movable sleeve, a sliding assembly connected to the movable cone disk is provided on the fixed plate, the sliding assembly is connected to the belt, the movable sleeve is connected to the feeding regulation mechanism, and the rotating rod is fixedly connected to the mixing blade.

[0009] As a further solution of the present invention: the sliding assembly includes a fixed cone disk fixedly mounted on the rotating rod, the side walls of the fixed cone disk and the movable cone disk are respectively provided with a plurality of grooves equidistantly distributed in a circle, a sliding rod is slidably mounted in the groove, an arc plate is fixed on the sliding rod, and the arc plate is connected to the belt.

[0010] As a further solution of the present invention: the feeding regulation mechanism includes a supporting sleeve fixedly installed in the feeding tank, a supporting rod penetrating the feeding tank is movably installed in the supporting sleeve, a movable plate movably connected to the movable sleeve is fixedly installed on the supporting rod, an elastic supporting assembly connected to the supporting rod and the supporting sleeve is arranged in the feeding tank, and the support rod is connected to the conduction adjustment mechanism.

[0011] As a further solution of the present invention: the elastic support assembly includes a spring sleeved on the support sleeve and the support rod, the support rod is hinged with a connecting rod at one end away from the movable plate, and a rotating plate hinged with the connecting rod is rotatably installed in the feeding tank.

[0012] As a further solution of the present invention: the conduction and regulation mechanism includes a movable rod movably installed in the feeding tank and passing through the storage tank, the end of the movable rod is hinged with a hinged rod, a driven assembly connected to the hinged rod is arranged in the storage tank, and the movable rod is hinged to the support rod.

[0013] As a further solution of the present invention: the driven component includes a conveying pipe movably installed in the storage tank, a plurality of through grooves equidistantly distributed around the circumference are opened on the circumferential outer wall of the conveying pipe, a sealing gasket is fixed to one end of the conveying pipe away from the mixing barrel, and the sealing gasket is hinged to the hinged rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present application can adaptively adjust the addition rate of another concrete according to the addition rate of one of the concrete raw materials in the preparation, and adjust the stirring rate of the raw materials according to the conveying rate of the raw materials. Under the action of the driving component, the stirring blades are driven to rotate by the rotating mechanism to mix the raw materials in the stirring barrel. When the raw materials are added into the feeding tank, the feeding regulating mechanism is moved under the action of the gravity of the raw materials, so that the raw materials enter the stirring barrel through the feeding tank. At the same time, the feeding regulating mechanism will also drive the rotating mechanism to move to adjust the rotation speed of the stirring blades. The feeding regulating mechanism will also drive the conduction regulating mechanism to move, so that the raw materials in the storage tank are added into the stirring barrel, thereby automatically adjusting the feeding amount and the stirring rate according to the amount of raw materials added. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic diagram of a process for preparing raw materials for concrete.

[0016] Figure 2 This is a schematic structural diagram of an embodiment of a method for mixing raw materials for preparing concrete.

[0017] Figure 3 This is a structural schematic diagram from another angle in an embodiment of the method for mixing raw materials for preparing concrete.

[0018] Figure 4 It is a schematic diagram of a half-section structure in an embodiment of a method for mixing raw materials for preparing concrete.

[0019] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at point A in the middle.

[0020] Figure 6 It is a schematic diagram of the structure of the driving assembly and the rotating mechanism in an embodiment of the method for mixing raw materials for preparing concrete.

[0021] Figure 7 This is a schematic diagram of a partial half-section structure in an embodiment of a method for mixing raw materials for preparing concrete.

[0022] Figure 8 It is a schematic diagram of the explosion structure of the feeding control mechanism in the embodiment of the raw material mixing method for preparing concrete.

[0023] Fig. 9 It is a schematic diagram of the explosion structure of the conduction regulating mechanism in the embodiment of the method for mixing raw materials for preparing concrete.

[0024] Fig.10 It is a schematic diagram of the exploded structure of part of the rotating mechanism in the embodiment of the method for mixing raw materials for preparing concrete.

[0025] In the figure: 1. bracket; 2. fixed plate; 3. stirring barrel; 4. feeding tank; 5. storage tank; 6. motor; 7. transmission rod; 8. belt; 9. rotating rod; 10. movable sleeve; 11. movable cone; 12. slot; 13. sliding rod; 14. arc plate; 15. fixed cone; 16. stirring blade; 17. rotating plate; 18. supporting sleeve; 19. supporting rod; 20. spring; 21. connecting rod; 22. movable plate; 23. movable rod; 24. hinged rod; 25. sealing pad; 26. conveying pipe; 27. through groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0028] See also Figure 1 In an embodiment of the present invention, a method for mixing raw materials for preparing concrete comprises the following steps: Step 1: Weigh the raw materials required for preparing concrete according to the proportion for subsequent production and use; Step 2: Add the weighed raw materials into the mixing device, and under the action of the mixing device, according to the raw material addition rate, another raw material can be added in proportion to ensure that the ratio of the raw materials is within the required range, and the raw materials are mixed under the action of the mixing device; Step 3: If the raw material addition rate changes, the mixing equipment can adaptively adjust the mixing rate of the raw materials to ensure that the concrete is always prepared at the optimal mixing strength; Step 4: Once mixing is complete, the concrete can be removed from the mixing equipment and introduced into the pre-prepared mold.

[0029] Please refer to 2~ Fig.10 , the mixing device comprises: A bracket 1, on which a symmetrically arranged fixing plate 2 is fixedly mounted, on which a mixing barrel 3 is fixedly mounted, and on which a feeding tank 4 and a storage tank 5 connected to the mixing barrel 3 are fixedly mounted; The storage tank 5 is used to hold one of the raw materials required for concrete preparation, and the feeding tank 4 is used to transport the other raw material into the mixing barrel 3 .

[0030] See also Figure 2-Figure 4 , Figure 6 , a driving assembly is arranged on the bracket 1, and the driving assembly includes a motor 6 fixedly mounted on the bracket 1, a transmission rod 7 connected to the output shaft of the motor 6 is rotatably mounted on the bracket 1, and a belt 8 is sleeved on the transmission rod 7, and the belt 8 is connected to the rotating mechanism.

[0031] In detail, when the concrete raw materials need to be stirred, the motor 6 works, driving the transmission rod 7 to rotate, thereby driving the belt 8 to move. The belt 8 also controls the movement of the rotating mechanism to mix the raw materials in the mixing barrel 3 through the stirring blades 16.

[0032] See also Figure 2-Figure 6 , Fig.10 The fixed plate 2 is provided with a rotating mechanism connected to the driving assembly and the mixing barrel 3, and the mixing barrel 3 is provided with a plurality of stirring blades 16 connected to the rotating mechanism and equidistantly distributed on the circumference. The driving assembly can drive the stirring blades 16 to rotate through the rotating mechanism to mix the raw materials in the mixing barrel 3. The rotating mechanism includes a rotating rod 9 rotatably mounted on the fixed plate 2 and passing through the mixing barrel 3, a movable sleeve 10 is movably mounted on the rotating rod 9, and a movable cone 11 is fixedly mounted on the movable sleeve 10. The fixed plate 2 A sliding assembly connected to the movable cone disk 11 is provided on it, the sliding assembly is connected to the belt 8, the movable sleeve 10 is connected to the feeding regulation mechanism, the rotating rod 9 is fixedly connected to the stirring blade 16, wherein the sliding assembly includes a fixed cone disk 15 fixedly mounted on the rotating rod 9, and the side walls of the fixed cone disk 15 and the movable cone disk 11 are respectively provided with a plurality of card grooves 12 distributed equidistantly around the circumference, a sliding rod 13 is slidably mounted in the card groove 12, an arc plate 14 is fixed on the sliding rod 13, and the arc plate 14 is connected to the belt 8.

[0033] It should be noted that when the raw materials in the mixing barrel 3 need to be mixed, at this time, under the action of the belt 8, the arc plate 14 moves, and the arc plate 14 also drives the sliding rod 13 to move. Under the action of the sliding rod 13 and the slot 12, the movable cone disk 11 and the fixed cone disk 15 rotate, thereby driving the movable sleeve 10 and the rotating rod 9 to rotate. Under the action of the rotating rod 9, the stirring blades 16 are controlled to mix the materials in the mixing barrel 3.

[0034] Preferably, if the rate at which the raw materials are conveyed to the mixing barrel 3 changes, the stirring rate of the raw materials needs to be changed synchronously to ensure that the raw materials are mixed more evenly. In the initial state, the movable sleeve 10 is located at the end of the stroke in the direction of the fixed cone 15. Under the action of the sliding rod 13 and the card slot 12, the spacing between the arc plates 14 is maximized. Since the belt 8 can be stretched or contracted to a certain extent, under the action of the arc plate 14, the belt 8 is in a stretched state, so that the rotation speed of the fixed cone 15 increases. When the amount of raw material added increases, the feeding regulation will be controlled. The mechanism moves, thereby driving the movable sleeve 10 to move in the direction away from the fixed cone disk 15. The movable sleeve 10 also drives the movable cone disk 11 to move, thereby driving the sliding rod 13 to move through the slot 12, so that the arc plates 14 move in the direction of approaching each other, so that the belt 8 contracts, thereby increasing the rotation speed of the rotating rod 9, so that the stirring intensity of the stirring blade 16 is increased. Similarly, if the addition rate of the raw material decreases, the stirring intensity of the stirring blade 16 needs to be reduced. At this time, the arc plates 14 move in the direction of moving away from each other to reduce the stirring intensity of the stirring blade 16.

[0035] See also Figure 2-Figure 4 , Figure 7 , Figure 8 , a feeding regulating mechanism is arranged in the feeding tank 4 and connected to the rotating mechanism, the feeding regulating mechanism can be activated when the raw material is added into the feeding tank 4 to adjust the conduction state of the feeding tank 4, and adjust the rotation speed of the stirring blade 16 through the rotating mechanism, the feeding regulating mechanism includes a supporting sleeve 18 fixedly installed in the feeding tank 4, a supporting rod 19 penetrating the feeding tank 4 is movably installed in the supporting sleeve 18, a movable plate 22 movably connected to the movable sleeve 10 is fixedly installed on the supporting rod 19, an elastic supporting assembly connected to the supporting rod 19 and the supporting sleeve 18 is arranged in the feeding tank 4, the supporting rod 19 is connected to the conduction regulating mechanism, wherein the elastic supporting assembly includes a spring 20 sleeved on the supporting sleeve 18 and the supporting rod 19, a connecting rod 21 is hinged at one end of the supporting rod 19 away from the movable plate 22, and a rotating plate 17 hinged to the connecting rod 21 is rotatably installed in the feeding tank 4.

[0036] Furthermore, in the initial state, the spring 20 is in a compressed state, so that the support rod 19 is located at the end of the stroke toward the feeding tank 4, and under the action of the connecting rod 21, the rotating plate 17 is in a state parallel to the opening of the feeding tank 4, so that the feeding tank 4 is in a blocked state. When the raw material is added into the feeding tank 4, the raw material will fall on the rotating plate 17. Under the action of the gravity of the raw material, the rotating plate 17 is controlled to rotate a certain angle, thereby driving the connecting rod 21 to move. The connecting rod 21 will also drive the support rod 19 to move along the length direction of the support sleeve 18, thereby driving the movable plate 22 to move. The movable plate 22 will drive the movable sleeve 10 to move in the direction away from the mixing barrel 3, thereby controlling the increase in the spacing between the movable cone disks 11, so that the rotation speed of the rotating rod 9 increases, so as to increase the stirring intensity of the raw materials, thereby achieving the effect of automatically adjusting the stirring intensity of the raw materials according to the conveying rate of the raw materials.

[0037] See also Figure 4 , Figure 7 , Fig. 9, a conduction adjustment mechanism is arranged in the storage tank 5 and is connected to the feeding tank 4 and the feeding regulation mechanism. The conduction adjustment mechanism can be activated when the feeding regulation mechanism moves to adjust the conduction state of the storage tank 5 and transport the material in the storage tank 5 to the mixing barrel 3. The conduction regulation mechanism includes a movable rod 23 movably installed in the feeding tank 4 and passing through the storage tank 5, and the end of the movable rod 23 is hinged with a hinged rod 24. A driven component connected to the hinged rod 24 is arranged in the storage tank 5, and the movable rod 23 is hinged with the support rod 19, wherein the driven component includes a conveying pipe 26 movably installed in the storage tank 5, and a plurality of through grooves 27 equidistantly distributed on the circumference of the conveying pipe 26 are provided on the circumferential outer wall. A sealing gasket 25 is fixed to the end of the conveying pipe 26 away from the mixing barrel 3, and the sealing gasket 25 is hinged to the hinged rod 24.

[0038] Furthermore, the material storage tank 5 contains raw materials for preparing concrete. When concrete needs to be prepared, in the initial state, the spring 20 is in a compressed state, so that the support rod 19 is located at the end of the stroke toward the material storage tank 5, so that the sealing gasket 25 is controlled by the movable rod 23 and the hinge rod 24 to be located at the end of the stroke toward the mixing barrel 3, so that the delivery pipe 26 is provided with a through groove 27 located in contact with the inner wall of the delivery port of the material storage tank 5. Under the action of the sealing gasket 25, the material storage tank 5 is in a blocked state. When materials are added into the feeding tank 4, the rotating plate 17 is rotated under the action of the gravity of the raw materials, thereby driving the support rod 19 to move through the connecting rod 21, and the support rod 19 It will also drive the movable rod 23 to move, thereby driving the sealing gasket 25 to move in the direction away from the mixing barrel 3 through the hinge rod 24. The sealing gasket 25 will also drive the conveying pipe 26 to move, thereby driving the through groove 27 to move. When the through groove 27 moves into the storage tank 5, the material in the storage tank 5 will enter the conveying pipe 26 through the through groove 27, and then be transported to the mixing barrel 3 through the conveying pipe 26. Among them, if the rate of adding raw materials into the feeding tank 4 increases, the rotation angle of the rotating plate 17 increases, thereby increasing the movement stroke of the movable rod 23, so that the size of the through groove 27 entering the storage tank 5 increases, thereby adjusting the conveying rate of the raw materials in the storage tank 5 according to the addition rate of one of the raw materials.

[0039] Those skilled in the art should regard the specification as a whole. The technical solutions in the various embodiments may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A method for mixing raw materials for preparing concrete, characterized in that: The following steps are involved: Step 1: Weigh the raw materials required for preparing concrete according to the proportion for subsequent production and use; Step 2: Add the weighed raw materials into the mixing device, and under the action of the mixing device, according to the raw material addition rate, another raw material can be added in proportion to ensure that the ratio of the raw materials is within the required range, and the raw materials are mixed under the action of the mixing device; Step 3: If the raw material addition rate changes, the mixing equipment can adaptively adjust the mixing rate of the raw materials to ensure that the concrete is always prepared at the optimal mixing strength; Step 4: Once mixing is complete, the concrete can be removed from the mixing equipment and introduced into the pre-prepared mold.

2. The method for mixing raw materials for preparing concrete according to claim 1, characterized in that: The mixing device comprises: A bracket (1), wherein a symmetrically arranged fixing plate (2) is fixedly mounted on the bracket (1), a stirring barrel (3) is fixedly mounted on the fixing plate (2), and a feeding tank (4) and a storage tank (5) connected to the stirring barrel (3) are fixedly mounted on the stirring barrel (3).

3. The method for mixing raw materials for preparing concrete according to claim 2, characterized in that: The mixing device also includes: A driving assembly is arranged on the support (1); a rotating mechanism connected to the driving assembly and the stirring barrel (3) is arranged on the fixing plate (2); a plurality of stirring blades (16) connected to the rotating mechanism and equidistantly distributed around the circumference are arranged in the stirring barrel (3); the driving assembly can drive the stirring blades (16) to rotate through the rotating mechanism, so as to mix the raw materials in the stirring barrel (3); a feeding regulating mechanism, arranged in the feeding tank (4) and connected to the rotating mechanism, the feeding regulating mechanism being capable of operating when raw materials are added into the feeding tank (4) to regulate the conduction state of the feeding tank (4), and regulating the rotation speed of the stirring blade (16) through the rotating mechanism; a conduction regulating mechanism, which is arranged in the material storage tank (5) and is connected to the material feeding tank (4) and the material feeding regulating mechanism, wherein the conduction regulating mechanism is capable of operating when the material feeding regulating mechanism moves, so as to adjust the conduction state of the material storage tank (5) and transport the material in the material storage tank (5) to the mixing barrel (3); The driving assembly comprises a motor (6) fixedly mounted on the bracket (1); a transmission rod (7) connected to an output shaft of the motor (6) is rotatably mounted on the bracket (1); a belt (8) is sleeved on the transmission rod (7); and the belt (8) is connected to the rotating mechanism; The rotating mechanism comprises a rotating rod (9) rotatably mounted on the fixed plate (2) and penetrating the stirring barrel (3); a movable sleeve (10) is movably mounted on the rotating rod (9); a movable cone disk (11) is fixedly mounted on the movable sleeve (10); a sliding component connected to the movable cone disk (11) is provided on the fixed plate (2); the sliding component is connected to the belt (8); the movable sleeve (10) is connected to the feeding regulating mechanism; and the rotating rod (9) is fixedly connected to the stirring blade (16); The sliding assembly comprises a fixed cone disk (15) fixedly mounted on the rotating rod (9), the side walls of the fixed cone disk (15) and the movable cone disk (11) are respectively provided with a plurality of slots (12) equidistantly distributed in a circumference, a sliding rod (13) is slidably mounted in the slot (12), an arc plate (14) is fixed on the sliding rod (13), and the arc plate (14) is connected to the belt (8); The feeding regulating mechanism comprises a supporting sleeve (18) fixedly mounted in the feeding tank (4), a supporting rod (19) movably mounted in the supporting sleeve (18) and penetrating the feeding tank (4), a movable plate (22) movably connected to the movable sleeve (10) being fixedly mounted on the supporting rod (19), an elastic supporting assembly connected to the supporting rod (19) and the supporting sleeve (18) being arranged in the feeding tank (4), and the supporting rod (19) being connected to the conduction regulating mechanism.

4. The method for mixing raw materials for preparing concrete according to claim 3, characterized in that: The elastic support assembly comprises a spring (20) sleeved on the support sleeve (18) and the support rod (19).

5. The method for mixing raw materials for preparing concrete according to claim 4, characterized in that: One end of the support rod (19) away from the movable plate (22) is hingedly connected to a connecting rod (21), and a rotating plate (17) hingedly connected to the connecting rod (21) is rotatably installed in the feeding tank (4).

6. The method for mixing raw materials for preparing concrete according to claim 5, characterized in that: The conduction regulating mechanism comprises a movable rod (23) movably mounted in the feeding tank (4) and penetrating the storage tank (5), and a hinge rod (24) is hingedly connected to the end of the movable rod (23).

7. The method for mixing raw materials for preparing concrete according to claim 6, characterized in that: A driven assembly connected to the hinged rod (24) is provided in the material storage tank (5), and the movable rod (23) is hinged to the support rod (19).

8. The method for mixing raw materials for preparing concrete according to claim 7, characterized in that: The driven component comprises a delivery pipe (26) movably mounted in the material storage tank (5), and a plurality of through grooves (27) equidistantly distributed around the circumference are formed on the circumferential outer wall of the delivery pipe (26).

9. The method for mixing raw materials for preparing concrete according to claim 8, characterized in that: A sealing gasket (25) is fixed to one end of the delivery pipe (26) away from the mixing barrel (3), and the sealing gasket (25) is hingedly connected to the hinge rod (24).

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