A mortar mixing apparatus
By combining a partitioned mixing chamber with a water spraying mechanism, the problem of uniform wetting of dry and wet materials in the initial stage of mixing is solved, realizing a high-efficiency, low-dust mortar mixing process, and ensuring the uniformity of the finished mortar and production efficiency.
Patent Information
- Application Number
- CN202521856876.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-29
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-29
AI Technical Summary
Existing mortar mixing equipment has a large density difference between dry and wet materials in the initial stage of mixing, and water cannot penetrate evenly, causing some cement to clump together, affecting mixing efficiency, and generating dust during the process of adding water to dry materials.
The design employs a partitioned mixing chamber. The material is initially moistened by spraying water in the premixing chamber, and then stirred in the main mixing chamber. Combined with annular water spray and twisted mixing blades, this ensures uniform humidification of the material and reduces dust.
It improves mortar mixing efficiency, reduces material clumping and dust, and ensures the uniformity of finished mortar quality and production efficiency.
Smart Images
Figure CN224675210U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mortar mixing technology, and in particular to a mortar mixing device. Background Technology
[0002] Mortar mixers are key equipment used on construction sites to mix cement, sand, water and other additives to prepare mortar. Currently, horizontal or vertical shaft single-compartment mixers are widely used in the market. These types of equipment usually only have one mixing chamber and a set of mixing blades driven by a single rotation speed (32). During operation, all dry and wet materials are put into the chamber at one time for mixing. However, at the beginning of the mixing process, when the machine is started, the dry cement and sand have large differences in density and fluidity. When water is added, the water flow cannot quickly and evenly penetrate to all material particles. Some cement that comes into contact with water will immediately solidify into hard lumps, affecting the mixing efficiency of the subsequent mortar. In addition, during the process of adding water to dry materials and at the beginning of the mixing process, a large amount of cement powder will be scattered and generate dust.
[0003] Based on the above situation, it is necessary to design a mortar mixing device to solve the above problems. Utility Model Content
[0004] This utility model provides a mortar mixing device to solve the problems existing in the prior art.
[0005] The technical problem solved by this utility model is achieved by the following technical solution:
[0006] A mortar mixing device includes a housing, a mixing mechanism, and a water spraying mechanism. The housing has an openable gate that divides the housing into an upper premixing chamber and a lower main mixing chamber. The mixing mechanism includes a drive motor mounted on the housing and a main shaft connected to the output end of the drive motor via a coupling and extending from the premixing chamber to the main mixing chamber. Both the portion of the main shaft located in the premixing chamber and the portion located in the main mixing chamber are equipped with mixing blades. The water spraying mechanism includes an annular water pipe located in the premixing chamber and a water injection pipe with its output end located in the main mixing chamber. The annular water pipe is equipped with several downward-sloping nozzles facing its center.
[0007] Preferably, the upper end of the box is connected to multiple feeding bins, and the main shaft located in the premixing chamber is connected to a baffle plate that fits against the top wall of the box, and the baffle plate is provided with a material leakage groove.
[0008] Preferably, the inner wall of the box is provided with a material distribution plate that slopes downward toward its center line, and the material distribution plate has a material discharge mesh that corresponds one-to-one with the material discharge bin.
[0009] Preferably, the water spraying mechanism further includes a water supply pipe connected to the annular water pipe and the water injection pipe, and the water supply pipe is equipped with a water pump.
[0010] Preferably, a scraper ring is provided on the inner circumferential wall of the premixing chamber, and the scraper ring is in contact with the upper surface of the gate plate.
[0011] Preferably, the stirring blades located in the main mixing chamber are twisted blades.
[0012] The beneficial effects of this utility model are: the water spraying mechanism first sprays water to wet the material entering the premixing chamber, so that the material enters the main mixing chamber in a loose and moist state, which makes the subsequent stirring in the main mixing chamber more efficient. In addition, the powdery material entering the premixing chamber is humidified, which reduces the generation of dust. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the isometric structure provided by this utility model;
[0015] Figure 2 A cross-sectional structural schematic diagram provided for this utility model;
[0016] Figure 3 This is a schematic diagram of the stirring blades in this utility model;
[0017] Figure 4 This is a three-dimensional structural diagram of the material distribution plate in this utility model.
[0018] In the diagram, 1. Box body; 11. Premixing chamber; 12. Main mixing chamber; 2. Gate plate; 3. Drive motor; 31. Main shaft; 32. Stirring blades; 4. Annular water pipe; 41. Water injection pipe; 42. Nozzle; 5. Feeding bin; 6. Baffle plate; 61. Leakage trough; 7. Distributing plate; 71. Feeding mesh; 8. Water supply pipe; 81. Water pump; 9. Scraper ring. Detailed Implementation
[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.
[0020] Reference Figures 1-4As shown, a mortar mixing device includes a housing 1. Inside the housing 1, there are two gates 2 slidably connected to the interior of the housing 1 via a telescopic mechanism. When the telescopic mechanism drives the two gates 2 to move relative to each other, the housing 1 can be divided into a premixing chamber 11 located above and a main mixing chamber 12 located below. The mixing mechanism includes a drive motor 3 mounted on the housing 1 and a main shaft 31 connected to the output end of the drive motor 3 via a coupling, extending from the premixing chamber 11 to the main mixing chamber 12. Both the premixing chamber 11 and the main shaft 31 located in the main mixing chamber 12 are equipped with stirring blades 32. Each of the two gates 2 has a rotating ring at one end that can wrap around the outer wall of the main shaft 31, unaffected by the rotation of the main shaft 31 driven by the drive motor 3. The water spraying mechanism includes an annular water pipe 4 located in the premixing chamber 11 and a water injection pipe 41 with its output end located in the main mixing chamber 12. The annular water pipe 4 is equipped with several nozzles 42 facing its center. When dry material first enters the premixing chamber 11, water is sprayed through the nozzles 42 to pre-wet the dry material. On the one hand… This allows for preliminary and uniform wetting of the surface of dry material particles, effectively preventing them from instantly clumping upon contact with water after entering the main mixing chamber 12. On the other hand, it can adsorb and settle diffused dust, reducing dust generation. The drive motor 3 starts, rotating the main shaft 31, and the stirring blades 32 fixed to it rotate synchronously. The stirring blades 32 within the premixing chamber 11 perform low-speed, wide-range agitation and mixing of the pre-wetted loose material, further homogenizing its moisture content. Then, the telescopic mechanism activates, driving the two gates 2 to move in opposite directions, causing the premixing chamber 11 to... After the material is moistened, it falls into the main mixing chamber 12 below. Then, the telescopic mechanism drives the gate 2 to reset and re-close the premixing chamber 11. The remaining water required is injected into the main mixing chamber 12 through the water injection pipe 41. The main shaft 31 drives the stirring blades 32 in the main mixing chamber 12 to shear and stir the material at medium and high speed. Since the material has been pre-moistened in the premixing chamber 11, no hard lumps are generated during the main mixing stage, and the stirring resistance is significantly reduced, resulting in a finished mortar with uniform quality. After mixing is completed, the discharge valve at the bottom is opened to discharge the material.
[0021] Furthermore, when the main mixing chamber 12 is in the main mixing chamber, materials can be added to the premixing chamber 11 to humidify the subsequent materials and wait for them to be used in the next mixing operation, thereby improving efficiency. When spraying water in the premixing chamber 11, the nozzle 42 is set to be tilted downwards to prevent materials from falling onto the nozzle 42 and causing blockage.
[0022] Reference Figure 3As shown, furthermore, the housing 1 is also provided with multiple feeding bins 5 for holding different materials, for injecting materials such as cement and sand into the housing 1. A baffle plate 6 that fits against the inner top wall of the housing 1 is connected to the main shaft 31 located in the premixing chamber 11. A material leakage groove 61 is opened on the baffle plate 6. When the baffle plate 6 rotates with the main shaft 31 and the material leakage groove 61 coincides or partially coincides with the output end of the feeding bin 5, the material in the feeding bin 5 falls into the housing 1. When the two are completely misaligned, the feeding stops. This cycle is repeated to achieve intermittent dropping of multiple materials, avoiding the material from falling into the premixing chamber 11 all at once, which would cause uneven mixing. In addition, the feeding ratio can be set according to the input ratio of different materials. A valve is set on the output pipe of the feeding bin 5. When the feeding ratio is reached, the valve is closed to stop the feeding.
[0023] The inner wall of the housing 1 is provided with a material distribution plate 7 that slopes downward toward its center line. The material distribution plate 7 has a discharge mesh hole 71 that corresponds one-to-one with the discharge bin 5. The material falling from the discharge bin 5 falls onto the material distribution plate and is then dispersed by the discharge mesh hole 71. All the material falls from the material distribution plate 7 in a dispersed, waterfall-like manner, forming a "material curtain" with a wider coverage and more uniform thickness in the premixing chamber 11. When the nozzle 42 sprays water, it can come into full contact with the material.
[0024] Reference Figure 1 As shown, the water spraying mechanism further includes a water supply pipe 8 connected to the annular water pipe 4 and the water injection pipe 41. The water supply pipe 8 can be connected to an external water supply pipe or water source. A water pump 81 is also provided on the water supply pipe 8 to pump water into the tank 1. A valve can be provided at the position of the water supply pipe 8 corresponding to the annular water pipe 4 or the water injection pipe 41 to open or close the annular water pipe 4 or the water injection pipe 41 separately when the water volume in the premixing chamber 11 or the main mixing chamber 12 reaches saturation.
[0025] Reference Figure 2 As shown, the premixing chamber 11 is further provided with a scraper ring 9 on its circumferential inner wall, and the scraper ring 9 is in contact with the upper end face of the gate plate 2. When the gate plate 2 is opened, the scraper ring 9 can scrape off the material on the gate plate 2 and drop it into the main mixing chamber 12, thereby reducing the adhesion of the material on the gate plate 2.
[0026] Reference Figure 3As shown, the stirring blades 32 located in the main mixing chamber 12 are twisted blades, and their shape can be one of spiral ribbon, fan blade, or frame type. They will generate a strong thrust on the material along the stirring axis, forcing the material to form a strong up-and-down convection circulation. The material at the bottom is pushed to the surface by the blades, while the material on the surface is pressed back to the bottom to reduce the occurrence of mixing dead zones. The stirring blades 32 in the premixing chamber 11 are not required to perform stirring and mixing.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A mortar mixing device, characterized in that, include, The housing (1) has an openable gate (2) inside, which divides the housing (1) into a premixing chamber (11) located above and a main mixing chamber (12) located below. The stirring mechanism includes a drive motor (3) mounted on the housing (1) and a main shaft (31) connected to the output end of the drive motor (3) via a coupling and extending from the premixing chamber (11) to the main mixing chamber (12). Both the portion of the main shaft (31) located in the premixing chamber (11) and the portion located in the main mixing chamber (12) are provided with stirring blades (32). The water spraying mechanism includes an annular water pipe (4) located in the premixing chamber (11) and a water injection pipe (41) with its output end located in the main mixing chamber (12). The annular water pipe (4) is provided with a plurality of downward-sloping nozzles (42) facing its center.
2. The mortar mixing equipment according to claim 1, characterized in that, The upper end of the box (1) is connected to multiple feeding bins (5), and the main shaft (31) located in the premixing chamber (11) is connected to a baffle plate (6) that fits against the inner top wall of the box (1). The baffle plate (6) is provided with a material leakage groove (61).
3. The mortar mixing equipment according to claim 2, characterized in that, The inner wall of the box (1) is provided with a material distribution plate (7) that slopes downward toward its center line. The material distribution plate (7) has a material discharge mesh (71) that corresponds one-to-one with the material discharge bin (5).
4. The mortar mixing equipment according to claim 1, characterized in that, The water spraying mechanism also includes a water supply pipe (8) connected to the annular water pipe (4) and the water injection pipe (41), and a water pump (81) is provided on the water supply pipe (8).
5. A mortar mixing device according to claim 1, characterized in that, The premixing chamber (11) has a scraper ring (9) on its inner circumference, and the scraper ring (9) is in contact with the upper surface of the gate (2).
6. The mortar mixing equipment according to claim 1, characterized in that, The stirring blade (32) located in the main mixing chamber (12) is a twisted blade.