Quicklime and clay mixing device for mixing road subgrade

Abstract

The utility model relates to the field of building material preparation, and discloses a quick lime and clay mixing device for road roadbed mixing, which comprises a motor, a pre-mixing cylinder, a mixing cylinder and a transportation device, the whole device divides the mixing of clay and quick lime into a pre-mixing process and a mixing process, the pre-mixing process is carried out in the pre-mixing cylinder, and the transportation device is arranged in the mixing cylinder. The stirring process is carried out in the stirring cylinder, so that the device can stir clay and quick lime more uniformly, the two stirring processes can be carried out at the same time, the space utilization rate is increased, the stirring efficiency is improved, and the effects that the clay and the quick lime are mixed uniformly and the stirring efficiency is high are achieved.

Description

Technical Field

[0001] This utility model relates to the field of building material preparation technology, and in particular to a quicklime and clay mixing device for roadbed mixing. Background Technology

[0002] In roadbed construction, the uniformity of the mixing of quicklime and clay directly affects the strength and stability of the roadbed. Traditional mixing devices suffer from problems such as uneven mixing, low efficiency, and serious dust pollution, making it difficult to meet the requirements of high-quality roadbed construction.

[0003] The invention patent with publication number CN 113211636 A discloses a mixing and discharging device for roadbed construction. By setting up corresponding mechanisms on a single-shaft mixer, it is convenient to clean the inside of the mixing drum of the single-shaft mixer, avoiding the situation where materials adhere to the inner wall of the mixing drum. This reduces the problems of proportioning errors and quality increases in the mixing process. However, this device only solves the problem from the perspective of cleaning. In actual mixing, there are still problems of uneven mixing and low efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a quicklime and clay mixing device for roadbed mixing, which has the effect of uniform mixing of clay and quicklime and high efficiency.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a quicklime and clay mixing device for roadbed mixing, comprising a motor, a mixing drum and a conveying device, wherein a plurality of pre-mixing support columns are provided above the mixing drum, and a pre-mixing drum is provided at the top of the pre-mixing support columns, and a material discharge channel that can communicate with the mixing drum and the pre-mixing drum is provided inside the pre-mixing support columns, the motor is located at the top of the pre-mixing drum, and a stirring shaft is provided at the output end of the motor in a vertically downward direction, the stirring shaft moving through the pre-mixing drum and the mixing drum in sequence, and a stirring component for stirring the pre-mixing drum and the mixing drum is provided on the stirring shaft, a feeding hopper is provided above the pre-mixing drum, a mixing support column is provided below the mixing drum, and a material discharge pipe is provided below the mixing drum, the material discharge pipe being located directly above the conveying device.

[0006] By adopting the above technical solution, a pre-mixing drum is added to the conventional mixing device, which divides the mixing of clay and quicklime into two stages: pre-mixing and mixing. The clay and quicklime are initially mixed in the pre-mixing drum, and the clay and quicklime are more thoroughly mixed in the mixing drum, so that the clay and quicklime are mixed more evenly.

[0007] The pre-mixing and mixing steps can be carried out simultaneously. While the clay and quicklime are initially mixed in the pre-mixing drum, they can be further mixed more thoroughly in the mixing drum at the same time. This maximizes the space utilization of the pre-mixing drum and the mixing drum and improves the overall mixing efficiency.

[0008] The pre-mixing and mixing processes share a single integrated mixing shaft, requiring only one power source to mix the two drums separately, saving energy and space.

[0009] The premixing support column not only provides structural support to the premixing drum, but also serves as a material discharge channel inside the premixing support column, allowing the clay-quicklime mixture inside the drum to enter and be transported.

[0010] A further feature of this invention is that an electric gate is provided at one end of the material feeding channel near the premixing drum, and an electric gate is provided at the top of the material feeding conveying pipe.

[0011] By adopting the above technical solution, the switch of electric gate one controls the opening and closing of the feeding channel, and the switch of electric gate two controls the opening and closing of the internal channel of the feeding conveying pipe, making the entire feeding process controllable.

[0012] A further feature of this invention is that the number of premixed support columns is four, and the four premixed support columns are evenly distributed at the bottom of the premixing drum.

[0013] By adopting the above technical solution, four premixed support columns are evenly distributed at the bottom of the premixing drum. This arrangement is more stable, making the support of the premixed support columns on the premixing drum more solid, and also making the overall structure of this utility model more stable. In addition, this structure also divides the feeding channel into four parts. Even if one part of the feeding channel fails, the other channels can still feed normally without affecting the use of the entire equipment, reducing equipment downtime and improving work efficiency.

[0014] A further feature of this invention is that the stirring blades include a first stirring blade located inside the premixing drum. The blades of the first stirring blade are trapezoidal, and the blades are wide and arranged on the stirring shaft with a large spacing.

[0015] By adopting the above technical solution, the larger blades of the mixing blades in the premixing drum allow for more thorough contact between the blades on the mixing shaft and the clay and quicklime in the premixing drum. At the same time, the larger blades with greater spacing can drive the densely distributed clay and quicklime mixture in the premixing drum to rotate and mix it.

[0016] Meanwhile, the clay-quicklime mixture inside the premixing drum is more dense, requiring it to withstand greater reaction forces as the blades rotate it. The wider blades, with their higher strength, can withstand these forces, thus extending the equipment's service life.

[0017] A further feature of this invention is that the stirring blades also include a second stirring blade located inside the mixing drum. The second stirring blade is spiral-shaped and the blades are arranged narrowly and closely on the stirring shaft.

[0018] By adopting the above technical solution, the narrow and densely packed blades of the mixing blades in the mixing drum increase the contact frequency and contact area between the blades and the clay-quicklime mixture, thereby enhancing the mixing effect on the clay-quicklime mixture and ensuring that the quicklime and clay can be mixed more thoroughly, achieving the following technical effects:

[0019] The narrow blades improve mixing uniformity, allowing them to penetrate deep into the material for thorough mixing and preventing dead zones. The dense blade distribution ensures frequent disturbance of the material during mixing, allowing quicklime and clay in different areas to fully contact and mix, effectively improving mixing uniformity and enhancing the stability and strength of the roadbed material.

[0020] The mixing efficiency is enhanced. The narrow and dense blades increase the force on the materials during mixing, making the movement of the materials in the mixing drum more intense. Compared with wide and sparse blades, it can complete the mixing of materials in a shorter time, reducing the overall mixing time, improving work efficiency, and meeting the progress requirements of engineering construction.

[0021] The densely distributed blades promote material circulation, creating complex flow paths within the mixing drum and guiding continuous material circulation. This circulation helps to further disperse the initially mixed materials evenly, making the entire mixing process more efficient and ensuring greater uniformity of the mixture.

[0022] A further feature of this invention is that the feed hopper includes a feed hopper one and a feed hopper two.

[0023] By adopting the above technical solution and setting up separate feed hoppers, direct contact between the two materials before feeding can be avoided, preventing premature reaction and ensuring that the materials enter the mixing stage in their original state. In addition, clay and quicklime enter the premixing drum from different feed hoppers, and as they fall, they rotate with the mixing blades, which also allows for more thorough mixing of the two materials. Furthermore, if one feed hopper is damaged, both materials can enter the premixing drum from the other feed hopper, reducing equipment downtime and improving work efficiency.

[0024] A further feature of this invention is that the transport device includes a frame and a conveyor belt mounted on the frame. A protective cover is provided on the frame and is located above the conveyor belt. The protective cover is made of transparent material.

[0025] By adopting the above technical solution, a transparent protective cover is installed on the conveyor belt. On the one hand, it prevents dust from flying out and polluting the environment, making it more environmentally friendly. On the other hand, it allows the state of the clay-lime mixture to be observed from the outside while it is being conveyed, reducing the difficulty of inspection work.

[0026] The beneficial effects of this utility model are:

[0027] 1. The clay and quicklime are mixed more thoroughly and evenly. A pre-mixing drum has been added to the conventional mixing device, which divides the mixing of clay and quicklime into two stages: pre-mixing and mixing. The clay and quicklime are initially mixed in the pre-mixing drum, while the clay and quicklime are mixed more thoroughly in the mixing drum, resulting in a more uniform mixture.

[0028] 2. Improve mixing efficiency: The pre-mixing and mixing steps can be carried out simultaneously. While the clay and quicklime are initially mixed in the pre-mixing drum, they can be further and more thoroughly mixed in the mixing drum at the same time. This maximizes the space utilization of the pre-mixing drum and the mixing drum, thereby improving the overall mixing efficiency.

[0029] 3. The premix support column serves two purposes: it not only supports the premix drum, but also allows the clay-lime mixture inside the premix drum to enter the mixing drum through the material discharge channel, thus also serving a transportation function.

[0030] 4. The mixing blades are rationally designed to ensure a more uniform mixing of quicklime and clay. The shape and arrangement of the two mixing blades are determined according to the environment of the mixing drum in which they are located: the first mixing blade is wider and stronger, has a longer service life, and can better drive the densely distributed clay-quicklime mixture in the premixing drum to rotate and mix it; the second mixing blade is narrower and denser, so that at the same speed and time, the blades have more contact with the mixture. By increasing the contact frequency and contact area between the blades and the clay-quicklime mixture, the mixing effect on the clay-quicklime mixture is strengthened, and the mixing efficiency is improved.

[0031] 5. Multiple feeding hoppers and feeding channels are provided. If one feeding hopper or feeding channel fails, the other feeding hoppers and feeding channels can still be used normally, reducing equipment downtime and improving work efficiency.

[0032] 6. There will be no dust pollution problem, which also reduces the difficulty of inspection. A transparent protective cover is installed on the conveyor belt to prevent dust from flying out and polluting the environment, making it more environmentally friendly. On the other hand, the state of the clay-lime mixture can be observed from the outside while it is being conveyed, which makes it easier to check the working effect of the entire device. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This is a structural diagram of the transportation device of this utility model;

[0036] Figure 3 This is a schematic diagram of the stirring shaft structure of this utility model;

[0037] Figure 4 This is a schematic diagram of the premixing drum structure of this utility model;

[0038] In the diagram, 1. Stirring shaft; 11. Stirring blade one; 12. Stirring blade two; 2. Mixing drum; 21. Electric gate two; 22. Mixing support column; 3. Premixing drum; 31. Electric gate one; 32. Premixing support column; 4. Feeding conveyor pipe; 5. Feed hopper one; 6. Feed hopper two; 7. Motor; 8. Conveyor belt; 81. Protective cover. Detailed Implementation

[0039] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0040] The specific structure of this utility model:

[0041] A quicklime and clay mixing device for roadbed mixing includes a motor 7, a mixing drum 2, and a conveying device. The conveying device includes a frame and a conveyor belt 8 mounted on the frame. A protective cover 81 is provided on the frame and is located above the conveyor belt 8. The protective cover 81 is made of transparent material.

[0042] A premixing drum 3 is connected above the mixing drum 2 by a premixing support column 32. The premixing support column 32 has a hollow structure and a material discharge channel inside. An electric gate 31 is provided at the point where the material discharge channel passes through the premixing drum 3. There are four premixing support columns 32, which are evenly distributed at the bottom of the premixing drum 3.

[0043] The motor 7 is located above the premixing drum 3. The motor 7 is fixedly connected to the stirring shaft 1. The stirring shaft 1 is integrally formed and passes through the premixing drum 3 and the mixing drum 2. The premixing drum 3 is provided with stirring blade 11. The blades of stirring blade 11 are trapezoidal and are arranged on the stirring shaft 1 with wide blades and large spacing. The mixing drum 2 is provided with stirring blade 12. The stirring blade 12 is spiral and is arranged on the stirring shaft 1 with narrow blades and close spacing.

[0044] The premixing drum 3 is equipped with a first feeding hopper 5 and a second feeding hopper 6 above it. A mixing support column 22 is fixedly connected below the mixing drum 2. A discharge conveying pipe 4 is provided below the mixing drum 2. An electric gate 21 is provided above the discharge conveying pipe 4. A conveyor belt 8 is located below the discharge conveying pipe 4.

[0045] During work:

[0046] Start motor 7, and pour the weighed clay and quicklime into premixing drum 3 through feed hopper 5 and feed hopper 6 respectively. The motor drives the stirring shaft, which in turn drives the stirring blades 11 to rotate, thereby rotating the clay and quicklime and premixing them. Premixing begins as the two materials fall into premixing drum 3, and timing begins from there. After the preset time has elapsed in premixing drum 3, the electric gate 31 corresponding to the four feeding channels opens, and the premixed clay and quicklime mixture falls from premixing drum 3 into mixing channel 2. When all the materials in premixing drum 3 have fallen into mixing drum 2, the electric gate 31 closes.

[0047] After the clay and quicklime mixture enters the mixing drum 2, it is further stirred. The stirring blades 12 are spiral-shaped, narrow and dense. The motor drives the stirring shaft, which in turn drives the stirring blades 12 to rotate, making the mixing of clay and quicklime more thorough and uniform. After stirring in the mixing drum 2 for a preset time, the corresponding electric gate 21 opens. The uniformly mixed clay and quicklime fall from the feeding pipe 4 through the protective cover 81 onto the conveyor belt 8. The conveyor belt 8 transports the uniformly mixed clay and quicklime to the designated position. During this process, no dust is exposed to the air, thus preventing environmental pollution.

[0048] This utility model has been described through several embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this utility model.

Claims

1. A quicklime and clay mixing device for roadbed mixing, comprising a motor (7), a mixing drum (2), and a conveying device, characterized in that: Several premixing support columns (32) are provided above the mixing drum (2). A premixing drum (3) is provided at the top of the premixing support column (32). A feeding channel that can communicate with the mixing drum (2) and the premixing drum (3) is provided inside the premixing support column (32). The motor (7) is located at the top of the premixing drum (3). A stirring shaft (1) is provided at the output end of the motor (7) in a vertically downward direction. The stirring shaft (1) moves through the premixing drum (3) and the mixing drum (2) in sequence. A stirring component for stirring the premixing drum (3) and the mixing drum (2) is provided on the stirring shaft (1). A feeding hopper is provided above the premixing drum (3). A mixing support column (22) is provided below the mixing drum (2). A feeding conveying pipe (4) is provided below the mixing drum (2). The feeding conveying pipe (4) is located directly above the transport device.

2. The quicklime and clay mixing device for roadbed mixing according to claim 1, characterized in that: An electric gate (31) is provided at one end of the feeding channel near the premixing drum (3), and an electric gate (21) is provided at the top of the feeding conveying pipe (4).

3. The quicklime and clay mixing device for roadbed mixing according to claim 2, characterized in that: The number of the premixed support columns (32) is four, and the four premixed support columns (32) are evenly distributed at the bottom end of the premixing cylinder (3).

4. The quicklime and clay mixing device for roadbed mixing according to claim 3, characterized in that: The mixing component includes a mixing blade (11) located inside the premixing drum (3), and the mixing blade (11) is trapezoidal.

5. A quicklime and clay mixing device for roadbed mixing according to claim 4, characterized in that: The stirring component also includes a second stirring blade (12) located inside the mixing drum (2). The second stirring blade (12) is spiral-shaped, and the number of the second stirring blade (12) is greater than the number of the first stirring blade (11).

6. The quicklime and clay mixing device for roadbed mixing according to claim 1, characterized in that: The feed hopper includes feed hopper one (5) and feed hopper two (6).

7. The quicklime and clay mixing device for roadbed mixing according to claim 1, characterized in that: The transport device includes a frame and a conveyor belt (8) mounted on the frame.

8. A quicklime and clay mixing device for roadbed mixing according to claim 7, characterized in that: The frame is provided with a protective cover (81), which is located above the conveyor belt (8).

9. A quicklime and clay mixing device for roadbed mixing according to claim 8, characterized in that: The protective cover (81) is made of transparent material.

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