A cement mixing device

Abstract

This utility model discloses a cement mixing device, including a mixing drum, a mixing shaft mounted inside the mixing drum via bearings, a drive assembly mounted on the mixing drum in conjunction with the mixing shaft, an adjustment cavity inside the mixing shaft, an adjustment shaft inside the adjustment cavity, mixing blades rotatably mounted on the side wall of the mixing shaft via bearings, the inner ends of the mixing blades extending into the adjustment cavity and having a rotation adjustment structure between them and the adjustment shaft, a mounting base at the top of the mixing shaft, the top of the adjustment shaft rotatably mounted on the mounting base via bearings and connected to an adjustment motor, a mixing rod between two adjacent sets of mixing blades, a first helical blade on the mixing rod, and a second helical blade arranged in the opposite direction on the outer side of the first helical blade. This utility model allows for flexible adjustment of the mixing angle of the mixing blades, and the use of a composite mixing structure improves cement mixing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cement mixing technology, and more specifically, to a cement mixing device. Background Technology

[0002] Cement is a powdery hydraulic binder, mainly made from limestone, clay, and other raw materials that are calcined at high temperatures and then ground. Its main component is calcium silicate, which hardens upon contact with water through a hydration reaction. It is characterized by high strength and good durability, making it one of the most important basic materials in construction engineering. Based on composition, it can be classified into silicate cement, slag cement, etc.; based on strength grade, it is classified into 32.5, 42.5, etc. During use, the water-cement ratio must be strictly controlled, and proper curing is essential to prevent cracking. Modern cement production is developing towards low-carbon and intelligent methods.

[0003] When cement is used, it needs to be mixed evenly with clean aggregates such as water and sand, as well as additives such as water-reducing agents and retarders. This process requires mixing with a mixing device.

[0004] However, most existing cement mixing devices use mixing blades to mix cement, water, sand, and gravel. The mixing blades are fixed in place and cannot be flexibly adjusted in terms of mixing angle as needed, which affects the flexibility of use.

[0005] In addition, existing cement mixing devices have simple and uniform mixing blades, resulting in poor mixing effect and efficiency. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the problems existing in the prior art, this utility model provides a cement mixing device to solve the technical problems mentioned in the background art, such as the simple structure of the mixing blades of the cement mixing device, the inconvenience of adjusting the mixing angle, and the poor flexibility of use.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A cement mixing device includes a mixing drum, a mixing shaft mounted inside the mixing drum via bearings, a drive assembly mounted on the mixing drum in conjunction with the mixing shaft, an adjustment cavity inside the mixing shaft, an adjustment shaft inside the adjustment cavity, mixing blades rotatably mounted on the side wall of the mixing shaft via bearings, the inner ends of the mixing blades extending into the adjustment cavity and having a rotation adjustment structure between them and the adjustment shaft, a mounting base at the top of the mixing shaft, the top of the adjustment shaft rotatably mounted on the mounting base via bearings and connected to an adjustment motor, wherein the power supply of the adjustment motor can be achieved using a conductive slip ring without affecting its wiring connection when rotating with the mixing shaft, a mixing rod is provided between two adjacent sets of mixing blades, a first helical blade is provided on the mixing rod, and a second helical blade is provided in the opposite direction to the outer side of the first helical blade.

[0011] The present invention is further configured such that a feed pipe is provided at the top of the mixing drum and a discharge pipe is provided at the bottom. A valve is provided on the discharge pipe. The feed pipe allows the cement to be fed into the mixing drum during cement mixing, and the discharge pipe allows the mixed cement to be discharged from the mixing drum and transported to the discharge pipe for cement discharge. The valve is used to control the opening and closing of the discharge pipe.

[0012] The present invention is further configured such that a discharge pipe is provided at the bottom end of the feeding pipe, and a spiral discharge shaft is provided inside the discharge pipe through a bearing. A discharge motor is provided on the outside of the discharge pipe in conjunction with the spiral discharge shaft. When the discharge motor is started, the spiral discharge shaft can be rotated through the discharge motor. The spiral discharge shaft can make the uniformly mixed cement discharged evenly, and at the same time, improve the controllability of the discharge.

[0013] The present invention is further configured such that the driving component includes a driving motor, which is disposed at the top of the mixing tank and is provided with a synchronous belt transmission structure between it and the mixing shaft. When the driving motor is started, the rotation of the mixing shaft can be controlled by the cooperation of the driving motor and the synchronous belt transmission structure, thereby realizing the rotation drive of the mixing blades, the mixing rod, the first spiral blade and the second spiral blade.

[0014] The present invention is further configured such that the rotation adjustment structure includes a first helical gear and a second helical gear, the first helical gear is disposed on the stirring shaft, and the second helical gear is disposed at one end of the stirring blade extending into the adjustment cavity, and the first helical gear and the second helical gear mesh with each other.

[0015] The present invention is further provided that the feed pipe is provided with a sealing cap, which can realize the feeding seal on the feed pipe, thereby improving the sealing of the inside of the mixing tank when the cement is being mixed.

[0016] The present invention is further configured such that a liquid inlet pipe is provided at the top of the mixing tank, and a sealing cap is provided on the liquid inlet pipe. The liquid inlet pipe enables the liquid to be introduced into the mixed solvent such as water-reducing agent and retarder. The sealing cap is used for sealing and protection of the liquid inlet pipe. The liquid inlet pipe can be installed on the liquid inlet pipe by means of snap-fit ​​or thread.

[0017] The present invention is further provided with a protective door at the tail end of the discharge pipe, thereby achieving sealing protection of the tail end of the discharge pipe.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the present invention provides a cement mixing device with the following advantages:

[0020] 1. This utility model is provided with a stirring shaft and stirring blades. Between the stirring shaft and stirring blades, there are mutually cooperating adjustment chambers, adjustment shafts, first helical gears, second helical gears, mounting bases, and adjustment motors. Thus, while the stirring shaft drives the stirring blades to rotate, realizing the mixing of cement in the mixing tank, the adjustment shaft can be controlled to rotate by the adjustment motor. In turn, the adjustment shaft drives the first helical gear to rotate. The meshing structure between the first and second helical gears controls the rotation of the stirring blades, so that the stirring angle of the stirring blades during rotation can be adjusted to meet the mixing needs of different consistency.

[0021] 2. This utility model has a stirring rod between two adjacent sets of stirring blades. The stirring rod is equipped with a first spiral blade, and a second spiral blade is arranged in the opposite direction on the outside of the first spiral blade. When the stirring shaft rotates, it can synchronously drive the stirring rod, the first spiral blade, and the second spiral blade to rotate, thereby forming a composite stirring structure between the first spiral blade, the second spiral blade, the stirring rod, and the stirring blades, which improves the fullness of the cement mixing process.

[0022] 3. This utility model has a discharge pipe connected to the bottom end of the feeding pipe, and a spiral discharge shaft and a discharge motor that cooperate with each other on the discharge pipe. When cement needs to be discharged, the valve on the feeding pipe can be opened and the discharge motor can be started. The discharge motor drives the spiral discharge shaft to rotate, thereby discharging the cement that has been mixed and stirred evenly into the discharge pipe in a uniform and controllable manner. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a cement mixing device according to the present invention;

[0024] Figure 2 This is a cross-sectional view of the overall internal structure of this utility model;

[0025] Figure 3This is a cross-sectional schematic diagram of a partial connection structure between the inside of the stirring shaft and the stirring blades in this utility model;

[0026] Figure 4 This is a schematic diagram of the fit structure between the stirring shaft, stirring blades, first spiral blade and second spiral blade in this utility model;

[0027] Figure 5 This is a cross-sectional view of the internal structure of the discharge pipe in this utility model.

[0028] In the diagram: 1. Mixing tank; 2. Mixing shaft; 3. Adjustment chamber; 4. Adjustment shaft; 5. Mixing blades; 6. Mounting base; 7. Adjustment motor; 8. Mixing rod; 9. First spiral blade; 10. Second spiral blade; 11. Feed pipe; 12. Discharge pipe; 13. Valve; 14. Discharge pipe; 15. Spiral discharge shaft; 16. Discharge motor; 17. Drive motor; 18. Synchronous belt drive structure; 19. First helical gear; 20. Second helical gear; 21. Sealing cover; 22. Liquid inlet pipe; 23. Sealing cap; 24. Protective door. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0032] Please see Figures 1-5A cement mixing device includes a mixing tank 1, a mixing shaft 2 mounted inside the mixing tank 1 via bearings, a drive assembly mounted on the mixing tank 1 in conjunction with the mixing shaft 2, an adjustment cavity 3 inside the mixing shaft 2, an adjustment shaft 4 mounted inside the adjustment cavity 3, mixing blades 5 rotatably mounted on the side wall of the mixing shaft 2 via bearings, the inner end of the mixing blades 5 extending into the adjustment cavity 3 and having a rotation adjustment structure between them and the adjustment shaft 4, a mounting base 6 at the top of the mixing shaft 2, the top of the adjustment shaft 4 rotatably mounted on the mounting base 6 via bearings and connected to an adjustment motor 7, wherein the power supply of the adjustment motor 7 can be achieved by a conductive slip ring, without affecting its wiring connection when rotating with the mixing shaft 2, a mixing rod 8 is provided between two adjacent sets of mixing blades 5, a first spiral blade 9 is provided on the mixing rod 8, and a second spiral blade 10 is provided in the opposite direction to the outer side of the first spiral blade 9.

[0033] Please see Figures 1-5 As one embodiment of the mixing tank 1: the top of the mixing tank 1 is provided with a feed pipe 11 and the bottom is provided with a discharge pipe 12. A valve 13 is provided on the discharge pipe 12. The feed pipe 11 can be used to feed the cement into the mixing tank 1 during cement mixing. The discharge pipe 12 can be used to discharge the mixed cement from the mixing tank and transport it to the discharge pipe 14 to achieve cement discharge. The valve 13 is used to control the opening and closing of the discharge pipe 12.

[0034] Please see Figures 1-5 As one implementation of the feeding pipe 12: a discharge pipe 14 is provided at the bottom end of the feeding pipe 12, and a spiral discharge shaft 15 is provided inside the discharge pipe 14 through a bearing. A discharge motor 16 is provided on the outside of the discharge pipe 14 in conjunction with the spiral discharge shaft 15. When the discharge motor 16 is started, the spiral discharge shaft 15 can be rotated through the discharge motor 16. The spiral discharge shaft 15 can make the uniformly mixed cement evenly discharged, and at the same time, improve the controllability of the discharge.

[0035] Please see Figures 1-5 As one implementation of the drive assembly: the drive assembly includes a drive motor 17, which is located at the top of the mixing tank 1 and is connected to the mixing shaft 2 by a synchronous belt drive structure 18. When the drive motor 17 is started, the rotation of the mixing shaft 2 can be controlled by the cooperation of the drive motor 17 and the synchronous belt drive structure 18, thereby realizing the rotation drive of the mixing blade 5, the mixing rod 8, the first spiral blade 9 and the second spiral blade 10.

[0036] Please see Figures 1-5As one embodiment of the rotation adjustment structure: the rotation adjustment structure includes a first helical gear 19 and a second helical gear 20. The first helical gear 19 is disposed on the stirring shaft 2, and the second helical gear 20 is disposed at one end of the stirring blade 5 extending into the adjustment cavity 3, and the first helical gear 19 and the second helical gear 20 mesh with each other.

[0037] Please see Figures 1-5 As one implementation of the feed pipe 11: a sealing cover 21 is provided on the feed pipe 11. The feed pipe 11 can be sealed by the sealing cover 21, thereby improving the sealing of the inside of the mixing tank 1 when the cement is being mixed.

[0038] Please see Figures 1-5 As one embodiment of the mixing tank 1: the top of the mixing tank 1 is provided with a liquid inlet pipe 22, and a sealing cap 23 is provided on the liquid inlet pipe 22. The liquid inlet pipe 22 enables the liquid to enter the mixed solvent such as water reducing agent and retarder. The sealing cap 23 is used for sealing and protecting the liquid inlet pipe 22. The liquid inlet pipe 22 can be installed on the liquid inlet pipe 22 by means of snap-fit ​​or thread.

[0039] Please see Figures 1-5 As one implementation of the discharge pipe 14: a protective door 24 is provided at the tail end of the discharge pipe 14, and the tail end of the discharge pipe 14 is sealed and protected by the protective door 24.

[0040] In summary:

[0041] This utility model is provided with a stirring shaft 2 and stirring blades 5. Between the stirring shaft 2 and the stirring blades 5, there are mutually cooperating adjustment chambers 3, adjustment shafts 4, first helical gears 19, second helical gears 20, mounting bases 6, and adjustment motors 7. Thus, while the stirring shaft 2 drives the stirring blades 5 to rotate, and the cement in the mixing tank 1 is stirred, the adjustment shaft 4 can be controlled to rotate by the adjustment motor 7. In turn, the adjustment shaft 4 drives the first helical gears 19 to rotate. The meshing structure between the first helical gears 19 and the second helical gears 20 controls the rotation of the stirring blades 5, so that the stirring angle of the stirring blades 5 can be adjusted during rotation, thereby adapting to the mixing requirements of different consistency.

[0042] This utility model provides a stirring rod 8 between two adjacent sets of stirring blades 5. A first spiral blade 9 is provided on the stirring rod 8, and a second spiral blade 10 is provided on the outer side of the first spiral blade 9 in the opposite direction. When the stirring shaft 2 rotates, it can synchronously drive the stirring rod 8, the first spiral blade 9 and the second spiral blade 10 to rotate, thereby forming a composite stirring structure between the first spiral blade 9, the second spiral blade 10, the stirring rod 8 and the stirring blades 5, which improves the fullness of the cement mixing process.

[0043] This utility model has a discharge pipe 14 connected to the bottom end of the feeding pipe 12, and a spiral discharge shaft 15 and a discharge motor 16 that cooperate with each other on the discharge pipe 14. When cement needs to be discharged, the valve 13 on the feeding pipe 12 can be opened and the discharge motor 16 can be started. The discharge motor 16 drives the spiral discharge shaft 15 to rotate, thereby discharging the cement that has been transported from the feeding pipe 12 to the discharge pipe 14 after being mixed and stirred evenly in a uniform and controllable manner.

[0044] In all the solutions mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

[0045] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here.

[0046] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies, and this utility model will not elaborate on them.

[0047] Of all the solutions mentioned above, those involving the connection between solar panels and batteries can be equipped with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and circuit connections are all existing, well-known, and mature technologies, and their specific circuit structures will not be elaborated here.

Claims

1. A cement mixing device, comprising a mixing drum (1), wherein a mixing shaft (2) is disposed inside the mixing drum (1) via a bearing, and a driving assembly is disposed on the mixing drum (1) in conjunction with the mixing shaft (2), characterized in that: The stirring shaft (2) has an adjustment cavity (3) inside, and an adjustment shaft (4) is provided inside the adjustment cavity (3). Stirring blades (5) are rotatably provided on the side wall of the stirring shaft (2) via bearings. The inner end of the stirring blades (5) extends into the adjustment cavity (3) and is provided with a rotation adjustment structure between it and the adjustment shaft (4). The top end of the stirring shaft (2) is provided with a mounting base (6). The top end of the adjustment shaft (4) is rotatably mounted on the mounting base (6) via bearings and is connected to an adjustment motor (7). A stirring rod (8) is provided between two adjacent sets of stirring blades (5). A first spiral blade (9) is provided on the stirring rod (8), and a second spiral blade (10) is provided in the opposite direction on the outer side of the first spiral blade (9). The top end of the stirring tank (1) is provided with a feed pipe (11), and the bottom end is provided with a discharge pipe (12). The discharge pipe (12) is equipped with a valve (13); the bottom end of the discharge pipe (12) is equipped with a discharge pipe (14), and a spiral discharge shaft (15) is provided in the discharge pipe (14) through a bearing. A discharge motor (16) is provided on the outside of the discharge pipe (14) in conjunction with the spiral discharge shaft (15); the drive assembly includes a drive motor (17), which is located at the top of the mixing tank (1) and is connected to the mixing shaft (2) by a synchronous belt drive structure (18); the rotation adjustment structure includes a first helical gear (19) and a second helical gear (20). The first helical gear (19) is located on the mixing shaft (2), and the second helical gear (20) is located at one end of the mixing blade (5) extending into the adjustment cavity (3). The first helical gear (19) and the second helical gear (20) mesh with each other.

2. The cement mixing device according to claim 1, characterized in that: A sealing cap (21) is provided on the feed pipe (11).

3. A cement mixing device according to claim 1, characterized in that: The top of the mixing tank (1) is provided with a liquid inlet pipe (22), and a sealing cap (23) is provided on the liquid inlet pipe (22).

4. A cement mixing device according to claim 1, characterized in that: The tail end of the discharge pipe (14) is provided with a protective door (24).

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