A flow state solidified soil stirring main machine

Abstract

The utility model belongs to solidified soil mixer equipment technical field relates to a kind of fluidized solidified soil mixing main machine, including mixing tank, drive assembly and mixing assembly, the mixing tank is transversely arranged, and the top of mixing tank is equipped with inlet, and the bottom is equipped with discharge port, and the discharge port is equipped with discharge door, and drive assembly includes main motor, speed reducer and gear transmission mechanism, and mixing assembly includes first stirring shaft and second stirring shaft, and first stirring shaft and second stirring shaft are arranged in parallel in the inside of mixing tank and are connected with the output end of gear transmission mechanism respectively;First stirring shaft and second stirring shaft are distributed and fixed multiple stirring blades along the axial direction and the circumference direction, and first stirring shaft and second stirring shaft are provided with semicircular blade corresponding to inlet.The utility model design is reasonable, and pertinence is strong, applicable to fluidized solidified soil production, and double-shaft synchronous rotation cooperates stirring blade to form convection shear, so that curing agent, water and soil material are evenly mixed in short time.

Description

Technical Field

[0001] This utility model belongs to the technical field of solidified soil mixer equipment, specifically relating to a fluidized solidified soil mixer host. Background Technology

[0002] Fluidized solidified soil, also known as liquid solidified soil, is a self-leveling, self-compacting, and pourable engineering material that is formed by mixing engineering waste mud or waste soil with water to form a mud slurry, adding a certain proportion of special mud solidification material, and then mixing it with special machinery. Fluidized solidified soil is a highly fluid and hardenable solid, suitable for roadbed backfilling, pipeline backfilling, foundation pit backfilling and other projects, and can effectively utilize the resources of waste soil.

[0003] Currently, the main mixing equipment for fluidized solidified soil is conventional concrete mixers, such as single-shaft mixers. However, single-shaft mixers have shortcomings when mixing fluidized solidified soil. Because waste soil contains high viscosity components, it is easy to form lumps and adhere to the mixing blades or tank walls during the mixing process, resulting in uneven distribution of the solidifying agent, affecting the uniformity and final strength of the finished material. Moreover, single-shaft mixers have a simple structure and low shear force on fluidized materials, making it difficult to quickly break up soil lumps. The mixing cycle is long and the production efficiency is low. Furthermore, single-shaft mixers are not adaptable to changes in the raw material ratio. When the soil moisture content is high, it is easy to form sticking to the walls and material accumulation. When the moisture content is low, it is easy to generate dust and poor mixing fluidity, affecting the fluidization effect.

[0004] Furthermore, existing mixing equipment suffers from problems such as dead zones at the bottom of the tank, inflexible shaft end sealing, unreliable blades, and an unreasonable overall structural layout, making it difficult to promote the continuous and stable production of fluidized solidified soil. There is an urgent need for a mixing host with a reasonable structure, high mixing efficiency, reliable sealing, and strong specificity to solve the problems of uniformity, efficiency, and adaptability in the mixing process of fluidized solidified soil. Therefore, a fluidized solidified soil mixing host is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a fluidized solidified soil mixing host, which has the characteristics of efficient and uniform mixing, simple and reliable structure, good sealing performance and no mixing dead corners. It solves the problems of uneven mixing caused by the high viscosity of soil, weak shear force and low efficiency of single-axis mixing, complex traditional sealing structure and poor adaptability to raw materials in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a fluidized solidified soil mixing host, including a mixing tank, a drive assembly, and a mixing assembly. The mixing tank is arranged horizontally, with a feed inlet at the top and a discharge outlet at the bottom. The discharge outlet is equipped with a discharge gate. The bottom of the mixing tank is W-shaped. The drive assembly includes a main motor, a reducer, and a gear transmission mechanism. The main motor is located on one side of the mixing tank, the reducer is located behind the main motor, and the gear transmission mechanism is located between the reducer and the mixing tank.

[0007] The stirring assembly includes a first stirring shaft and a second stirring shaft, which are arranged in parallel inside the stirring tank and connected to the output end of the gear transmission mechanism respectively. The first stirring shaft and the second stirring shaft are distributed and fixed with multiple stirring blades along the axial and circumferential directions. The first stirring shaft and the second stirring shaft are provided with semi-circular blades corresponding to the feed inlet. The W-shaped bottom contour of the stirring tank is adapted to the rotational envelope of the first stirring shaft and the second stirring shaft.

[0008] Preferably, the top of the mixing tank is equipped with an embedded access door.

[0009] Preferably, the gear transmission mechanism includes a first driven gear and a second driven gear that mesh with the driving gear on the output shaft of the reducer. The first driven gear is driven to the first stirring shaft, and the second driven gear is driven to the second stirring shaft. The first stirring shaft and the second stirring shaft are connected by a roller chain coupling.

[0010] Preferably, 28 stirring blades and 1 semi-circular blade are fixed on the first stirring shaft and the second stirring shaft, respectively, and the stirring blades are arranged in a spiral at a 60° angle relative to the axes of the first stirring shaft and the second stirring shaft.

[0011] Preferably, both the stirring blades and the semi-circular blades are fixed to the first stirring shaft and the second stirring shaft by threaded connectors, the threaded connectors including anti-loosening nuts.

[0012] Preferably, the first and second stirring shafts are provided with air-tight components at the shaft ends of the side plate of the mixing tank.

[0013] Preferably, the semi-circular blade is a semi-circular steel with a straight cutting edge.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. This utility model is reasonably designed and highly targeted, and is suitable for the production of fluidized solidified soil. The synchronous rotation of the two shafts, combined with the stirring blades, forms convective shear, which makes the solidifying agent, water and soil materials uniformly mixed in a short time.

[0016] 2. This utility model has the characteristics of efficient and uniform mixing, simple and reliable structure, good sealing performance and no dead corners in mixing. It solves the problems of uneven mixing caused by the high viscosity of soil, weak shear force and low efficiency of single-axis mixing, complex traditional sealing structure and poor adaptability to raw materials in the prior art. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a side view of a fluidized solidified soil mixing host according to one embodiment;

[0019] Figure 2 This is a top view of a fluidized solidified soil mixing host according to one embodiment;

[0020] Figure 3 This is a partial structural diagram of a fluidized solidified soil mixing host according to one embodiment;

[0021] In the above figures, 1. mixing tank, 2. feed inlet, 3. discharge outlet, 4. unloading gate, 5. main motor, 6. reducer, 7. gear transmission mechanism, 8. first mixing shaft, 9. second mixing shaft, 10. mixing blade, 11. semi-circular blade, 12. embedded inspection door, 13. anti-loosening nut. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] Example 1, as Figure 1-3As shown, a fluidized solidified soil mixing host includes a mixing tank 1, a drive assembly and a mixing assembly. The mixing tank 1 is arranged horizontally, with a feed inlet 2 at the top and a discharge outlet 3 at the bottom. The discharge outlet 3 is equipped with a discharge gate 4. The bottom of the mixing tank 1 is W-shaped. The drive assembly includes a main motor 5, a reducer 6 and a gear transmission mechanism 7. The main motor 5 is located on one side of the mixing tank 1, the reducer 6 is located behind the main motor 5, and the gear transmission mechanism 7 is located between the reducer 6 and the mixing tank 1.

[0025] The mixing assembly includes a first mixing shaft 8 and a second mixing shaft 9, which are arranged parallel to each other inside the mixing tank 1 and connected to the output end of the gear transmission mechanism 7, respectively. Multiple mixing blades 10 are distributed and fixed along the axial and circumferential directions of the first and second mixing shafts 8 and 9. Semi-circular blades 11 are provided on the first and second mixing shafts 8 and 9 corresponding to the feed inlet 2. The W-shaped bottom profile of the mixing tank 1 is adapted to the rotational envelope of the first and second mixing shafts 8 and 9. The angle between the two inclined surfaces of the W-shaped tank bottom and the horizontal plane is designed to be 150°-160°. The running clearance between the outermost edge of the mixing blades 10 and the tank bottom and sidewalls is controlled at 5-15mm, which achieves both scraping and cleaning of the tank walls and avoids hard friction.

[0026] The mixing tank 1 forms the main structure, and its horizontal orientation lowers the overall center of gravity, ensuring stable operation. The inlet 2 is used to feed raw materials such as soil and curing agents, while the outlet 3 is used to discharge materials. The W-shaped bottom plate profile matches the rotational envelope of the mixing shaft, minimizing dead zones and ensuring effective material mixing. The discharge gate 4 installed at the outlet 3 allows for manual or automatic adjustment of the discharge flow rate to control the production rhythm. Preferably, a manually adjustable discharge valve is installed on the discharge gate 4 to control the discharge flow rate.

[0027] The main motor 5 of the drive assembly provides initial power, which is adjusted to a suitable speed and torque by the reducer 6. The gear transmission mechanism 7 distributes the power to the first stirring shaft 8 and the second stirring shaft 9, realizing a single motor driving two shafts. The gear meshing ensures that the first stirring shaft 8 and the second stirring shaft 9 rotate synchronously in opposite directions. The power transmission is efficient and the synchronization accuracy is high. The dual-shaft counter-rotation can form a strong convection and shear flow field in the tank, achieving efficient and uniform mixing. Multiple stirring blades 10 are distributed and fixed on the first stirring shaft 8 and the second stirring shaft 9. During rotation, they not only push the material axially but also generate strong radial tumbling and shearing, thoroughly breaking up the soil clumps. The semi-circular blades 11 located below the feed inlet 2 act as "pre-crushing blades" to pre-cut the large pieces or sticky soil materials, preventing them from directly accumulating and affecting the subsequent mixing efficiency.

[0028] The specific design of the aforementioned key components will be discussed in detail below:

[0029] The mixing tank 1 is equipped with an embedded inspection door 12 on its top. The embedded inspection doors 12 are evenly distributed on the top of the mixing tank 1, facilitating the inspection, cleaning, and maintenance of the wear condition of the mixing blades 10 and the adhesion condition to the tank wall. The advantage of the "embedded" design is that it is flush with the tank wall and has good sealing performance, which helps to maintain the working environment inside the tank and prevent dust from rising.

[0030] The gear transmission mechanism 7 includes a driving gear and a first driven gear meshing with the driving gear, mounted on the output shaft of the reducer 6. The first driven gear is driven to the first stirring shaft 8, and the second driven gear is driven to the second stirring shaft 9. The first stirring shaft 8 and the second stirring shaft 9 are connected by a roller chain coupling. A single motor combined with a gear set drives the two shafts, resulting in a compact structure and efficient and precise power transmission. The gear meshing ensures that the first stirring shaft 8 and the second stirring shaft 9 rotate synchronously in opposite directions, solving the problems of weak shear force and uneven mixing in single-shaft stirring. The addition of a roller chain coupling serves as a secondary safety measure, compensating for minor installation errors, absorbing impact loads, and ensuring long-term synchronous operation of the two shafts under heavy load and vibration conditions, resulting in smoother and more reliable operation.

[0031] The first stirring shaft 8 and the second stirring shaft 9 are respectively fixed with 28 stirring blades 10 and 1 semi-circular blade 11. The stirring blades 10 are arranged in a spiral at a 60° angle relative to the axes of the first stirring shaft 8 and the second stirring shaft 9. The number of 28 blades is designed to provide sufficient shear band in the axial direction, so that the material is continuously and repeatedly agitated. The 60° spiral arrangement allows the stirring blades 10 to not only cut and scatter the material radially when rotating, but also generate a strong axial pushing force. The material moves from the inlet 2 end to the outlet 3 end, forming a three-dimensional circulation throughout the tank, improving macroscopic mixing efficiency and shortening the stirring cycle.

[0032] Both the stirring blade 10 and the semi-circular blade 11 are fixed to the first stirring shaft 8 and the second stirring shaft 9 by threaded connectors, which include anti-loosening nuts 13. The anti-loosening nuts 13 are preferably Spirax nuts, whose thread deformation locking effectively resists loosening of the nuts due to vibration under alternating impact loads.

[0033] An air-sealing assembly is provided at the shaft ends of the first stirring shaft 8 and the second stirring shaft 9, which pass through the side plate of the mixing tank 1. The air-sealing assembly includes a stationary ring seat fixed to the side plate of the tank body, a rotating ring mounted on the stirring shaft, and an air inlet leading to the annular air groove of the stationary ring seat. After introducing clean compressed air at 0.2-0.5 MPa, an air curtain barrier is formed in the tiny gap of approximately 0.1-0.3 mm between the rotating and stationary rings. The air seal is a non-contact seal, forming an air curtain barrier through the continuously introduced clean, low-pressure air in the gap between the rotating and stationary rings. It features zero wear, long service life, good sealing effect, effectively preventing slurry leakage and the entry of external foreign matter, simplified structure, reduced maintenance complexity and cost, no lubrication pollution, and maintains material cleanliness.

[0034] The semi-circular blade 11 is a semi-circular steel with a straight cutting edge. Located directly below the feed inlet 2, the semi-circular blade 11 provides instantaneous and powerful cutting and initial crushing of the input soil, especially large clumps of soil, thus preventing the clumps of material from directly entering the mixing zone and causing problems such as "clumping" or uneven mixing at the starting point.

[0035] 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.

[0036] 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 fluidized solidified soil mixing unit, comprising a mixing tank, a drive assembly, and a mixing assembly, characterized in that, The mixing tank is arranged horizontally, with a feed inlet at the top and a discharge outlet at the bottom. The discharge outlet is equipped with a discharge gate. The bottom of the mixing tank is W-shaped. The drive assembly includes a main motor, a reducer, and a gear transmission mechanism. The main motor is located on one side of the mixing tank, the reducer is located behind the main motor, and the gear transmission mechanism is located between the reducer and the mixing tank. The stirring assembly includes a first stirring shaft and a second stirring shaft, which are arranged in parallel inside the stirring tank and connected to the output end of the gear transmission mechanism respectively. The first stirring shaft and the second stirring shaft are distributed and fixed with multiple stirring blades along the axial and circumferential directions. The first stirring shaft and the second stirring shaft are provided with semi-circular blades corresponding to the feed inlet. The W-shaped bottom contour of the stirring tank is adapted to the rotational envelope of the first stirring shaft and the second stirring shaft.

2. The fluidized solidified soil mixing host according to claim 1, characterized in that, The mixing tank is equipped with an embedded inspection door on its top.

3. The fluidized solidified soil mixing host according to claim 1, characterized in that, The gear transmission mechanism includes a first driven gear and a second driven gear that mesh with the driving gear on the output shaft of the reducer. The first driven gear is driven to the first stirring shaft, and the second driven gear is driven to the second stirring shaft. The first stirring shaft and the second stirring shaft are connected by a roller chain coupling.

4. The fluidized solidified soil mixing host according to claim 1, characterized in that, The first stirring shaft and the second stirring shaft are respectively fixed with 28 stirring blades and 1 semi-circular blade, and the stirring blades are arranged in a spiral at a 60° angle relative to the axis of the first stirring shaft and the second stirring shaft.

5. A fluidized solidified soil mixing host according to claim 1 or 4, characterized in that, Both the stirring blades and the semi-circular blades are fixed to the first stirring shaft and the second stirring shaft by threaded connectors, which include anti-loosening nuts.

6. The fluidized solidified soil mixing host according to claim 1, characterized in that, An air-tight assembly is provided at the shaft end of the first and second stirring shafts that pass through the side plate of the mixing tank.

7. A fluidized solidified soil mixing host according to claim 1, characterized in that, The semi-circular blade is a semi-circular steel with a straight cutting edge.

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