Proportioning and weighing equipment for cement mortar

Abstract

The utility model discloses proportioning and weighing equipment for cement mortar, and relates to the field of cement quantitative proportioning equipment, the proportioning and weighing equipment for the cement mortar comprises a mixing barrel, a bearing edge is fixed on the outer wall of the opening of the mixing barrel, and an outer sleeve is sleeved on the outer side of the mixing barrel in a sliding manner; according to the proportioning and weighing equipment for the cement mortar, the problem that the service life of a weighing structure is shortened due to the fact that small and medium-sized cement premixing and quantitative proportioning equipment directly bears a mixing bin structure through the weighing structure in the prior art is solved, and the cement mortar can be directly stirred and mixed in a mixing barrel after being quantitatively proportioned by the proportioning and weighing equipment for the cement mortar; in the stirring and mixing process, the weighing scale does not bear the weight as well, and it is guaranteed that the weighing scale does not work in other links except the quantitative proportioning link.

Description

Technical Field

[0001] This utility model relates to the field of cement quantitative proportioning equipment, and in particular to a proportioning and weighing device for cement mortar. Background Technology

[0002] Before premixing cement mortar, it needs to be quantitatively proportioned with sand and cement. Traditional techniques rely on manual estimation, but this method is inaccurate. Although existing commercial concrete mixing plants typically use large-scale automated proportioning equipment, many small-scale construction projects, especially rural construction projects, still rely on traditional manual estimation. To address the inaccuracy of manual estimation, a small-scale premixed quantitative proportioning device has emerged on the market. This device has multiple storage silos, with cement, sand, and water placed in each silo. A mixing silo is suspended below these silos, and weight sensors connect the mixing silos to the storage silos. Raw materials are sequentially added to the mixing silo, and the weight sensors display the amount of material, thus achieving quantitative proportioning. However, this structural arrangement means that even when not in use, the multiple weight sensors continuously bear the weight of the storage silos, accelerating their aging and damage, and reducing their lifespan. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a cement mortar proportioning and weighing device that solves the problem that the weight sensor of the existing small premix quantitative proportioning device continuously bears the weight of the mixing chamber, resulting in a reduced lifespan of the weight sensor.

[0004] To address the problems in the existing technology, the technical solution of this utility model is as follows:

[0005] A cement mortar proportioning and weighing device includes a mixing cylinder, a load-bearing edge fixed to the outer wall of the open end of the mixing cylinder, an outer sleeve slidably sleeved on the outside of the mixing cylinder, the load-bearing edge being located directly above the top surface of the outer sleeve, an opening being formed on the side wall of the lower section of the outer sleeve, and the discharge pipe of the mixing cylinder being located inside the opening.

[0006] A liftable weighing scale is installed on the bottom surface of the inner wall of the outer sleeve. The weighing scale moves up and down inside the outer sleeve via a lifting component.

[0007] Preferably, a plurality of sliders are fixed at equal angular intervals on the outer wall of the mixing cylinder, and a slide rail is fixed on the inner wall of the outer sleeve corresponding to the position of the sliders. The sliders are slidably connected to the outer wall of the slide rail, thereby realizing the slidable connection between the outer sleeve and the mixing cylinder. The lower end of both the mixing cylinder and the lower end of the outer sleeve are tapered.

[0008] Preferably, the discharge pipe of the mixing cylinder is arranged at an angle, and the discharge pipe of the mixing cylinder extends through the opening to the outside of the outer sleeve. The outer sleeve includes a plurality of support legs fixed at equal angular intervals on the lower outer wall, and a support disc is fixed at the bottom of the support legs.

[0009] Preferably, the bottom surface of the weighing scale is fixed with four sliding rods in a circular array, and the lower section of each sliding rod is provided with a sliding sleeve, the bottom surface of which is fixed to the bottom surface of the inner wall of the outer sleeve.

[0010] The lifting assembly includes a bidirectional screw that is rotatably connected to the middle of the lower end of the outer sleeve via a bearing. The bidirectional screw is arranged laterally and passes between four sliding rods. One end of the bidirectional screw extends to the outside of the outer sleeve and is fixed with a handwheel.

[0011] The two ends of the bidirectional screw are symmetrically threaded to two moving blocks. The moving blocks are located inside the outer sleeve, and the bottom surface of the moving blocks slides in contact with the bottom surface of the inner wall of the outer sleeve. The top surface of the moving blocks is hinged with a flip plate. The two flip plates are arranged in a figure-eight shape, and the upper ends of the two flip plates are hinged to the bottom surface of the weighing scale.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] This invention involves sliding a mixing cylinder inside an outer sleeve, with a liftable weighing scale positioned between the bottom surface of the inner wall of the outer sleeve and the bottom surface of the mixing cylinder. When not weighing, the outer sleeve directly bears the weight of the mixing cylinder, significantly reducing the workload of the weighing scale and greatly extending its service life. Furthermore, after the raw materials are quantitatively added to the mixing cylinder, the weighing scale can be lowered and separated from the mixing cylinder, allowing the outer sleeve to again bear the weight of the mixing cylinder and raw materials. Subsequently, mixing can be performed directly within the mixing cylinder without transferring the proportioned raw materials to a mixing device, reducing operational steps. During the mixing process, the weighing scale also does not bear the weight. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the positional relationship between the discharge pipe and the opening of this utility model;

[0016] Figure 3 This is a schematic diagram of the discharge pipe structure of this utility model;

[0017] Figure 4 This is a schematic diagram showing the positional relationship between the weighing scale and the outer sleeve of this utility model;

[0018] Figure 5This is a schematic diagram showing the positional relationship between the bidirectional screw and the moving block of this utility model;

[0019] Reference numerals in the attached diagram: 1. Mixing cylinder; 101. Discharge pipe; 2. Load-bearing edge; 3. Outer sleeve; 4. Slider; 5. Slide rail; 6. Support foot; 7. Support disc; 8. Opening; 9. Weighing scale; 10. Slide rod; 11. Slide sleeve; 12. Bidirectional screw; 13. Handwheel; 14. Moving block; 15. Tilting plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1 to 5 This embodiment provides a cement mortar proportioning and weighing device, including a mixing cylinder 1. A load-bearing edge 2 is fixed to the outer wall of the open end of the mixing cylinder 1. An outer sleeve 3 is slidably fitted on the outer side of the mixing cylinder 1. Several sliders 4 are fixed at equal angular intervals on the outer wall of the mixing cylinder 1. A slide rail 5 is fixed to the inner wall of the outer sleeve 3 at the position corresponding to the sliders 4. The sliders 4 are slidably connected to the outer wall of the slide rail 5. The sliding connection between the mixing cylinder 1 and the outer sleeve 3 is realized through the slide rail 5 and sliders 4, so that the mixing cylinder 1 can slide up and down inside the outer sleeve 3. The outer sleeve 3 includes several support feet 6 fixed at equal angular intervals on its lower outer wall. A support disc 7 is fixed to the bottom of the support feet 6. The outer sleeve 3 is supported by the support feet 6 and the support disc 7.

[0022] In this embodiment, the load-bearing edge 2 is located directly above the top surface of the outer sleeve 3. The lower ends of the mixing cylinder 1 and the outer sleeve 3 are both tapered. An opening 8 is formed on the side wall of the lower section of the outer sleeve 3. The discharge pipe 101 of the mixing cylinder 1 is located inside the opening 8. The discharge pipe 101 of the mixing cylinder 1 is arranged at an inclination and extends through the opening 8 to the outside of the outer sleeve 3. When the mixing cylinder 1 slides up and down, the discharge pipe 101 of the mixing cylinder 1 can move up and down within the opening 8. Under normal conditions, under the action of gravity, the load-bearing edge 2 remains on the top surface of the outer sleeve 3. After multiple raw materials of mortar are sequentially added into the mixing cylinder 1, they are stirred in the mixing cylinder 1. After stirring, they are discharged through the discharge pipe 101 below the mixing cylinder 1. The tapered shape facilitates the material discharge, and the downwardly inclined discharge pipe 101 also facilitates the discharge.

[0023] In this embodiment, a liftable weighing scale 9 is provided on the bottom surface of the inner wall of the outer sleeve 3. Four sliding rods 10 are fixed in a circular array on the bottom surface of the weighing scale 9. A sliding sleeve 11 is slidably sleeved on the outer side of the lower section of the sliding rod 10. The bottom surface of the sliding sleeve 11 is fixed to the bottom surface of the inner wall of the outer sleeve 3. The sliding connection between the weighing scale 9 and the inner wall of the outer sleeve 3 is realized through the sliding sleeve 11 and the sliding rod 10, so that the weighing scale 9 can slide up and down inside the outer sleeve 3. A bidirectional screw 12 is rotatably connected to the middle of the lower end of the outer sleeve 3 through a bearing. The bidirectional screw 12 is arranged laterally and passes through the four sliding rods 10. One end of the bidirectional screw 12 extends to the outer side of the outer sleeve 3 and is fixed with a handwheel 13.

[0024] In this embodiment, two movable blocks 14 are symmetrically threaded at both ends of the bidirectional screw 12. The movable blocks 14 are located inside the outer sleeve 3, and the bottom surface of the movable blocks 14 slides in contact with the bottom surface of the inner wall of the outer sleeve 3. A flip plate 15 is hinged to the top surface of the movable blocks 14. The two flip plates 15 are arranged in a figure-eight shape, and the upper ends of the two flip plates 15 are hinged to the bottom surface of the weighing scale 9.

[0025] In this embodiment, before the raw materials of cement mortar are sequentially added to the mixing cylinder 1, the handwheel 13 is first turned to rotate the bidirectional screw 12, causing the two moving blocks 14 to move closer to each other and push the flip plate 15 to flip. This pushes the weighing scale 9 to rise, so that the weighing scale 9 presses against the bottom of the mixing cylinder 1 and lifts the mixing cylinder 1. The weighing scale 9 fully bears the weight of the mixing cylinder 1. Finally, the raw materials are sequentially added to the inside of the mixing cylinder 1. After each raw material is added, the change in the value fed back by the weighing scale 9 is observed. This achieves the effect of quantitative proportioning. After the proportioning is completed, the handwheel 13 is turned in the opposite direction to lower the weighing scale 9 and separate it from the mixing cylinder 1. The load-bearing edge 2 is then placed on the top surface of the outer sleeve 3 again. The raw materials are then stirred in the mixing cylinder 1. After the stirring is completed, the discharge pipe 101 is opened to discharge the mixed raw materials.

[0026] In summary, this utility model solves the problem that the existing small-scale cement premix quantitative proportioning equipment directly bears the weight of the mixing silo structure, which leads to a reduction in the service life of the weighing structure. Moreover, after quantitative proportioning, this utility model can directly stir and mix in the mixing cylinder 1. During the stirring and mixing process, the weighing scale 9 does not bear any weight, ensuring that the weighing scale 9 does not work in any other stage except for the quantitative proportioning stage.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cement mortar proportioning and weighing device, comprising a mixing drum, characterized in that, The outer wall of the opening of the mixing cylinder is fixed with a load-bearing edge, and an outer sleeve is slidably fitted on the outside of the mixing cylinder. The load-bearing edge is located directly above the top surface of the outer sleeve. An opening is formed on the side wall of the lower section of the outer sleeve, and the discharge pipe of the mixing cylinder is located inside the opening. A liftable weighing scale is installed on the bottom surface of the inner wall of the outer sleeve. The weighing scale moves up and down inside the outer sleeve via a lifting component.

2. The cement mortar proportioning and weighing device according to claim 1, characterized in that, Several sliders are fixed at equal angular intervals on the outer wall of the mixing cylinder, and a slide rail is fixed on the inner wall of the outer sleeve corresponding to the position of the sliders. The sliders are slidably connected to the outer wall of the slide rail.

3. The cement mortar proportioning and weighing device according to claim 2, characterized in that, The lower end of the mixing cylinder and the lower end of the outer sleeve are both tapered.

4. The cement mortar proportioning and weighing device according to claim 3, characterized in that, The discharge pipe of the mixing cylinder is arranged at an angle, and the discharge pipe of the mixing cylinder extends through the opening to the outside of the outer sleeve.

5. The cement mortar proportioning and weighing device according to claim 1, characterized in that, The outer sleeve includes several support legs fixed at equal angular intervals on its lower outer wall, and a support disc is fixed to the bottom of the support legs.

6. The cement mortar proportioning and weighing device according to claim 2, characterized in that, The weighing scale has four sliding rods fixed in a circular array on its bottom surface. The lower section of each sliding rod is fitted with a sliding sleeve, and the bottom surface of the sliding sleeve is fixed to the bottom surface of the inner wall of the outer sleeve.

7. The cement mortar proportioning and weighing device according to claim 6, characterized in that, The lifting assembly includes a bidirectional screw that is rotatably connected to the middle of the lower end of the outer sleeve via a bearing. The bidirectional screw is arranged laterally and passes between four sliding rods. One end of the bidirectional screw extends to the outside of the outer sleeve and is fixed with a handwheel. The two ends of the bidirectional screw are symmetrically threaded to two moving blocks. The moving blocks are located inside the outer sleeve, and the bottom surface of the moving blocks slides in contact with the bottom surface of the inner wall of the outer sleeve. The top surface of the moving blocks is hinged with a flip plate. The two flip plates are arranged in a figure-eight shape, and the upper ends of the two flip plates are hinged to the bottom surface of the weighing scale.

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