A single-shaft horizontal paddle-type mixing device for dry-mixed mortar

Abstract

The utility model belongs to dry -mixed mortar mixing technical field relates to a single -shaft horizontal paddle type stirring device for dry -mixed mortar, including stirring shaft, the stirring shaft is single -shaft including axle body and arm seat, and stirring shaft is connected with stirring jar body through the shaft end sealing, be connected with forward stirring arm, reverse stirring arm, side scraping arm A and side scraping arm B on the arm seat, forward stirring arm and reverse stirring arm spiral distribution in the stirring shaft outer wall, side scraping arm A and side scraping arm B are installed in stirring shaft both ends respectively, and the angle between side scraping arm A and side scraping arm B is 180 DEG. The utility model realizes three -dimensional strong convection mixing, solves the industry problem such as high energy consumption, poor uniformity, tank wall sticking material of double -shaft machine, and the mixing uniformity is significantly enhanced, and the energy consumption is reduced, has the advantages such as anti -clogging, mixing uniform, promotes mixing efficiency, is applicable to dry -mixed mortar industrialization production.

Description

Technical Field

[0001] This utility model belongs to the field of dry mortar mixing technology, specifically relating to a single-shaft horizontal paddle mixer for dry mortar. Background Technology

[0002] Dry-mixed mortar is a granular or powdered material made by mixing aggregates (such as quartz sand), inorganic cementitious materials (such as cement), and additives in a specific ratio. Its production process requires extremely high mixing uniformity, but existing technologies have several problems. First, traditional single-shaft mixing devices mix materials using only a single-direction rotating mixing arm, resulting in poor dispersion of materials of different particle sizes and a tendency for stratification. Second, powdered materials are prone to absorbing moisture and clumping, and conventional mixing arms lack sufficient shear force to effectively break up these clumps. Furthermore, the mixed material tends to accumulate in the discharge pipe, and an improperly designed spiral discharge structure can lead to poor discharge.

[0003] To address the aforementioned problems, existing technologies such as the CN219356126U patent, while promoting material discharge through spiral blades, have not solved the issues of low mixing efficiency and agglomeration. Therefore, there is an urgent need for an improved stirring shaft and stirring arm structure to optimize the mixing process. Utility Model Content

[0004] The purpose of this invention is to provide a single-shaft horizontal paddle mixer for dry-mixed mortar, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a single-shaft horizontal paddle mixer for dry-mixed mortar, including a mixing shaft. The mixing shaft is a single shaft including a shaft body and an arm seat. The mixing shaft is connected to the mixing tank through a shaft end seal. The arm seat is connected to a forward mixing arm, a reverse mixing arm, a side scraper arm A, and a side scraper arm B. The forward mixing arm and the reverse mixing arm are spirally distributed on the outer wall of the mixing shaft. The side scraper arm A and the side scraper arm B are respectively installed at both ends of the mixing shaft, and the angle between the side scraper arm A and the side scraper arm B is 180°.

[0006] Preferably, it includes 5 forward stirring arms, 5 reverse stirring arms, 1 side scraper arm A and 1 side scraper arm B.

[0007] Preferably, the one forward stirring arm and the one reverse stirring arm are arranged symmetrically at a center of 180° in the middle of the stirring shaft, and the remaining forward stirring arms and reverse stirring arms are arranged in pairs in the same direction, spirally distributed at a 60° angle to both ends of the stirring shaft, with the forward stirring arms pointing towards the side scraper arm B and the reverse stirring arms pointing towards the side scraper arm A.

[0008] Preferably, the forward stirring arm includes a forward stirring arm body, and the forward stirring arm body is connected to a forward stirring blade, which is a paddle type; the reverse stirring arm includes a reverse stirring arm body, and the reverse stirring arm body is connected to a reverse stirring blade, which is a paddle type.

[0009] Preferably, the side scraper arm A includes a side arm A and a side scraper blade A, and the side scraper arm B includes a side arm B and a side scraper blade B.

[0010] Preferably, the two ends of the stirring shaft are sealed to the stirring tank by a shaft end device, a bearing seat is provided behind the shaft end device, the non-driving end of the shaft end device is connected by an end cover, and the driving end is provided with a key connected to a motor.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. This utility model realizes three-dimensional strong convection mixing, solves industry problems such as high energy consumption, poor uniformity, and material sticking to the tank wall of the twin-shaft machine, significantly enhances the mixing uniformity, reduces energy consumption, and has the advantages of anti-clogging, uniform mixing, and improved mixing efficiency. It is suitable for the industrial production of dry-mixed mortar.

[0013] 2. Compared with the traditional dual-axis design, the single-axis lightweight structure of this utility model reduces the moment of inertia. Combined with the golden angle layout, it reduces fluid resistance and significantly saves energy. The reinforced welding process of the shaft and arm seat improves fatigue resistance. The 60° symmetrical arrangement ensures dynamic balance, making the equipment vibration value far below the industry standard. The maintenance cycle is extended and the failure rate is greatly reduced. At the same time, the mixing efficiency is improved and the production cycle is shortened. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural diagram of a single-shaft horizontal paddle mixer for dry-mixed mortar, according to one embodiment.

[0016] Figure 2 This is a side view of a single-shaft horizontal paddle mixer for dry-mixed mortar according to one embodiment.

[0017] In the above figures, 1 is the stirring shaft, 2 is the forward stirring arm, 3 is the reverse stirring arm, 4 is the side scraper arm A, 5 is the side scraper arm B, 6 is the bearing seat, and 7 is the shaft end device. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1, such as Figure 1-2 As shown, a single-shaft horizontal paddle mixer for dry-mixed mortar includes a mixing shaft 1. The mixing shaft 1 is a single shaft comprising a shaft body and an arm seat. The mixing shaft 1 is connected to the mixing tank via a shaft end seal. The mixing shaft 1 serves as a power transmission device, bearing and transmitting motor torque. The shaft end seal achieves a dynamic seal with the mixing tank. Compared to the traditional dual-shaft structure, it significantly reduces rotational inertia, reduces start-stop energy consumption, and the shaft body and arm seat are made of high-strength welded materials, improving fatigue resistance and extending service life.

[0021] The stirring shaft 1 is sealed to the mixing tank at both ends by shaft end devices 7. A bearing seat 6 is provided behind the shaft end device 7. The non-drive end of the shaft end device 7 is connected by an end cover, and the drive end is equipped with a keyed motor. The shaft end seal prevents leakage of fine powder materials and ensures the airtightness of the equipment. The bearing seat 6 supports the stable operation of the stirring shaft 1 and bears axial and radial loads. The keyed motor efficiently transmits drive torque.

[0022] The arm base is connected to a forward stirring arm 2, a reverse stirring arm 3, a side scraper arm A4, and a side scraper arm B5. The forward stirring arm 2 and the reverse stirring arm 3 are spirally distributed on the outer wall of the stirring shaft 1. The side scraper arm A4 and the side scraper arm B5 are respectively installed at both ends of the stirring shaft 1, and the angle between the side scraper arm A4 and the side scraper arm B5 is 180°.

[0023] The specific design of the aforementioned key components will be discussed in detail below:

[0024] It includes 5 forward stirring arms 2, 5 reverse stirring arms 3, 1 side scraper arm A4, and 1 side scraper arm B5. The 1 forward stirring arm 2 and 1 reverse stirring arm 3 are arranged symmetrically at a 180° center in the middle of the stirring shaft 1. The remaining forward stirring arms 2 and reverse stirring arms 3 are arranged in pairs in the same direction, spirally distributed towards both ends of the stirring shaft 1 at a 60° included angle. The forward stirring arms 2 are towards the side scraper arm B5, and the reverse stirring arms 3 are towards the side scraper arm A4.

[0025] The forward stirring arm 2 includes a forward stirring arm body, and the forward stirring arm body is connected to forward stirring blades. The forward stirring blades are paddle-type. The reverse stirring arm 3 includes a reverse stirring arm body, and the reverse stirring arm body is connected to reverse stirring blades. The reverse stirring blades are paddle-type. The paddle-type blades apply strong shear force to the material to crush agglomerated particles.

[0026] The forward stirring arm 2 pushes the material axially towards the side scraper arm B5, while the reverse stirring arm 3 pushes the material in the opposite direction towards the side scraper arm A4, creating material convection. Three-dimensional efficient mixing is achieved through the synergistic effect of the forward and reverse stirring arms 2 and 3. The forward stirring arm 2 radially diffuses the material to the tank wall, while the reverse stirring arm 3 creates axial backflow. The two converge and collide in the central area of ​​the stirring shaft 1. The five stirring arms are arranged in a 60° staggered pattern, forming a multi-directional turbulent flow field with a 180° symmetrical center, eliminating mixing dead zones, significantly improving material dispersion, and ensuring uniform bonding of fine powder and aggregate. Simultaneously, the sharp-angled structure of the reverse blades generates strong shear against agglomerated materials, and the central convection zone performs secondary crushing, effectively solving the problems of stratification and agglomeration in dry-mixed mortar, thereby comprehensively improving mixing uniformity and agglomeration breaking capacity.

[0027] The side scraper arm A4 includes a side arm A and a side scraper blade A, and the side scraper arm B5 includes a side arm B and a side scraper blade B. Side scraper arms A4 and B5 are symmetrically distributed at 180° at both ends of the stirring shaft 1. The drive-end side scraper arm B5 removes newly adhering material from the high-speed rotating zone, while the distal side scraper arm A4 cleans the settled material layer, achieving zero residue on the tank wall. During the discharge stage, the 35° inclined blades of the reverse stirring arm 3 reverse to form a spiral-like conveying structure, directionally pushing the material to the outlet; the side scraper arms A4 and B5 synchronously reverse to guide the material flow, avoiding accumulation in the discharge pipe. This dual mechanism prevents formula deviation from the source and completely eliminates the risk of discharge blockage, thereby eradicating material adhesion to the tank wall and ensuring smooth discharge.

[0028] Compared to traditional dual-axis designs, the single-axis lightweight structure reduces rotational inertia, and the optimal angle layout minimizes fluid resistance, resulting in significant energy savings. The reinforced welding process between the shaft and the arm enhances fatigue resistance, while the 60° symmetrical arrangement ensures dynamic balance, keeping equipment vibration levels far below industry standards. Maintenance cycles are extended, and the failure rate is significantly reduced, while improved mixing efficiency shortens production cycles. This device, with its high reliability and low energy consumption, meets the demands of continuous industrial production of dry-mixed mortar.

[0029] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A single-shaft horizontal paddle mixer for dry-mixed mortar, comprising a mixing shaft, wherein the mixing shaft is a single shaft including a shaft body and an arm seat, and the mixing shaft is connected to a mixing tank via a shaft end seal, characterized in that, The arm base is connected to a forward stirring arm, a reverse stirring arm, a side scraper arm A, and a side scraper arm B. The forward stirring arm and the reverse stirring arm are spirally distributed on the outer wall of the stirring shaft. The side scraper arm A and the side scraper arm B are respectively installed at both ends of the stirring shaft, and the angle between the side scraper arm A and the side scraper arm B is 180°.

2. The single-shaft horizontal paddle mixer for dry-mixed mortar according to claim 1, characterized in that, It includes 5 forward stirring arms, 5 reverse stirring arms, 1 side scraper arm A and 1 side scraper arm B.

3. A single-shaft horizontal paddle mixer for dry-mixed mortar according to claim 2, characterized in that, The one forward stirring arm and one reverse stirring arm are arranged symmetrically at a center of 180° in the middle of the stirring shaft. The remaining forward stirring arms and reverse stirring arms are arranged in pairs in the same direction, spirally distributed at a 60° angle to both ends of the stirring shaft. The forward stirring arms are directed toward the side scraper arm B, and the reverse stirring arms are directed toward the side scraper arm A.

4. A single-shaft horizontal paddle mixer for dry-mixed mortar according to claim 1, characterized in that, The forward stirring arm includes a forward stirring arm body, and the forward stirring arm body is connected to a forward stirring blade, which is a paddle type. The reverse stirring arm includes a reverse stirring arm body, and the reverse stirring arm body is connected to a reverse stirring blade, which is a paddle type.

5. A single-shaft horizontal paddle mixer for dry-mixed mortar according to claim 1, characterized in that, The side scraper arm A includes a side arm A and a side scraper blade A, and the side scraper arm B includes a side arm B and a side scraper blade B.

6. A single-shaft horizontal paddle mixer for dry-mixed mortar according to claim 1, characterized in that, The two ends of the stirring shaft are sealed to the stirring tank by shaft end devices. A bearing seat is provided behind the shaft end device. The non-driving end of the shaft end device is connected by an end cover, and the driving end is provided with a key connected to the motor.

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