Temperature-controlled lime-mixed clay roadbed rapid mixing device

Abstract

This utility model discloses a temperature-controlled rapid mixing device for lime-blended clay roadbed, relating to the field of lime-blended clay mixing technology. The device includes a base frame and a mixing chamber mounted on the base frame. The mixing chamber has a cylindrical structure, with a mixing assembly inside and a temperature control assembly outside. A preheating inlet is located at the upper end of the mixing chamber, and a discharge port is located at the lower end. The inlet of the preheating inlet is sealed with a sealing cap. By installing a temperature control assembly on the outside of the mixing chamber, this utility model can continuously and stably regulate the temperature of the materials inside the mixing chamber, preventing material clumping or incomplete reaction in low-temperature environments, and significantly improving the mixing efficiency and uniformity of lime-blended clay in negative temperature environments.

Description

Technical Field

[0001] This utility model relates to the field of ash-mixed clay mixing technology, and in particular to a temperature-controlled ash-mixed clay roadbed rapid mixing device. Background Technology

[0002] In road engineering, lime-blended clay is widely used in subgrade filling construction. By adding an appropriate amount of lime, the physical and mechanical properties of clay can be effectively improved, enhancing its bearing capacity and stability. However, when lime-blended clay is mixed and constructed in low-temperature environments, especially sub-zero temperatures, the high water content and easy freezing of the clay inhibit the ion exchange reaction between lime and clay, making it difficult for the material to achieve the expected stabilization effect and seriously affecting the quality of the subgrade.

[0003] Most commonly used mixing equipment is designed for ambient temperatures and lacks temperature control features for low-temperature conditions. Traditional mixing devices typically feed cold materials directly into the mixing chamber, which not only prolongs the material's heating time but also easily causes problems such as material agglomeration and uneven mixing, affecting mixing efficiency and product quality. Furthermore, the lack of a preheating structure at the feed inlet makes it difficult to perform preliminary heating of the raw materials, further exacerbating the adverse effects of low temperatures on the mixing process.

[0004] To address these issues, some equipment has begun to incorporate heating devices, but most of these are limited to localized heating outside the mixing chamber, lacking a systematic temperature control design and exhibiting low heating efficiency. Furthermore, existing equipment is prone to material adhesion and blockage during the feeding process, affecting continuous feeding and reducing overall operational efficiency. Utility Model Content

[0005] This utility model provides a temperature-controlled rapid mixing device for ash-mixed clay roadbed, including a base frame and a mixing chamber mounted on the base frame. The mixing chamber has a cylindrical structure, with a mixing component inside and a temperature control component wrapped around it. The upper end of the mixing chamber is provided with a feeding preheating box, and the lower end is provided with a discharge port. The feeding port of the feeding preheating box is sealed with a sealing cover.

[0006] Preferably, the temperature control component includes a thermally conductive metal shell, a heating wire winding strip, and a heat insulation layer. The heating wire winding strip is connected to a power source via a controller and can uniformly heat the interior of the mixing chamber according to a set temperature.

[0007] Preferably, the mixing chamber is equipped with multiple temperature sensors, and the control cabinet is fixed to one side of the base frame. The control cabinet integrates a controller. The temperature sensors collect material temperature information in real time and transmit the signal to the controller. The controller automatically adjusts the heating power of the heating wire winding strip through the temperature control execution module to achieve dynamic constant temperature control during the mixing process.

[0008] Preferably, the outside of the feeding preheating box is wrapped with an insulation sleeve, a heating tube is embedded in the insulation sleeve, and a temperature sensor is installed on the upper wall inside the feeding preheating box.

[0009] Preferably, the feeding preheating box has two feeding ports, and a sealing plate is slidably provided at the bottom of each feeding port. Side rails are provided on both sides of the feeding preheating box, and the two sides of the sealing plate slide within the two sets of side rails respectively.

[0010] Preferably, a vertical rail is fixedly installed on the upper side of the side rail, and a connecting rod slides inside the vertical rail. The lower end of the connecting rod is connected to two sets of scrapers, and the two sets of scrapers are respectively located in the two sets of feed inlets of the feed preheating box.

[0011] Preferably, both sets of side rails are rotatably equipped with bidirectional lead screws, the two sets of bidirectional lead screws are connected by a transmission component, the two sets of bidirectional lead screws are threadedly connected to the two sets of sealing plates respectively, and the transmission component is driven by a motor.

[0012] Preferably, a reciprocating lead screw is rotatably installed inside the vertical rail, and the reciprocating lead screw is threadedly connected to the connecting rod.

[0013] Preferably, the lower end of the reciprocating lead screw is connected to a bevel gear one, and the middle part of a set of bidirectional lead screws is connected to a bevel gear two, with bevel gear one and bevel gear two meshing.

[0014] Preferably, the mixing assembly includes a main shaft and helical propulsion blades. The main shaft passes through the mixing chamber and is connected to a drive motor, and the helical propulsion blades are used to propel the material forward.

[0015] This utility model provides a temperature-controlled rapid mixing device for lime-mixed clay subgrade, which, compared with the prior art, offers the following advantages:

[0016] 1. This utility model, by installing a temperature control component on the outside of the mixing chamber, enables continuous and stable temperature regulation of the materials inside the mixing chamber, preventing material clumping or incomplete reaction under low-temperature conditions, and significantly improving the mixing efficiency and uniformity of ash-mixed clay under negative temperature conditions. Simultaneously, a preheating box is added at the feed inlet, and an insulation sleeve and heating pipe are installed on the outside of the preheating box, achieving preheating treatment of the materials before they enter the mixing chamber, effectively increasing the initial temperature of the materials, reducing the heating time required during mixing, and further accelerating heat transfer efficiency.

[0017] 2. This utility model seals the bottom of the feeding preheating box with a sealing plate, allowing the material to temporarily remain inside the preheating box before entering the mixing chamber. This prolongs the material's residence time in the heating zone, resulting in more thorough initial heating and improved overall temperature uniformity. Simultaneously, the drive mechanism engages bevel gear one and bevel gear two, synchronously driving the bidirectional and reciprocating lead screws to rotate. On one hand, the bidirectional lead screw moves the sealing plate to both sides, opening the discharge channel and allowing the heated material to smoothly enter the mixing chamber. On the other hand, the reciprocating lead screw drives the connecting plate to move the scraper downwards along the inner wall of the feeding preheating box, scraping away material adhering to the inner wall, preventing material accumulation and clumping, ensuring smooth discharge, and improving heat transfer efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of the mixing chamber structure according to an embodiment of the present utility model;

[0021] Figure 3 This is a cross-sectional view of the temperature control component structure according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the feeding preheating box and other components according to an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the installation of the temperature sensor II according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the scraper and other structures in an embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of the heating tube installation according to an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the sealing plate and other structures in an embodiment of the present utility model.

[0027] Figure label:

[0028] 1. Base frame; 2. Control cabinet; 3. Mixing chamber; 4. Temperature sensor one; 5. Mixing assembly; 6. Discharge port; 7. Temperature control assembly; 71. Thermally conductive metal shell; 72. Heating wire winding tape; 73. Thermal insulation layer; 8. Feed preheating box; 9. Sealing cover; 10. Side rail; 11. Bidirectional lead screw; 12. Transmission component; 13. Vertical rail; 14. Reciprocating lead screw; 15. Bevel gear one; 16. Bevel gear two; 17. Sealing plate; 18. Connecting rod; 19. Scraper; 20. Insulation sleeve; 21. Heating tube; 22. Temperature sensor two. Detailed Implementation

[0029] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] Please refer to Figures 1-8 This utility model provides a temperature-controlled rapid mixing device for ash-mixed clay roadbed, including a base frame 1 and a mixing chamber 3 set on the base frame 1. The mixing chamber 3 has a cylindrical structure and is used to contain and mix ash-mixed clay materials.

[0031] A mixing assembly 5 is provided inside the mixing chamber 3. The mixing assembly 5 includes a main shaft that runs through the mixing chamber 3. The main shaft is driven to rotate by a drive motor installed at one end of the mixing chamber 3. Spiral propulsion blades are fixedly installed on the main shaft to push the material forward along the length of the mixing chamber 3 during the mixing process, so as to realize the continuous mixing and conveying of the material.

[0032] To meet the construction requirements in low-temperature environments, the mixing chamber 3 is externally encased in a temperature control component 7. The temperature control component 7 consists of a heat-conducting metal shell 71, a heating wire winding strip 72 wrapped around the outer wall of the heat-conducting shell, and a heat insulation layer 73 covering the heating wire. The heating wire winding strip 72 is electrically connected to a power source via a controller, and can uniformly heat the interior of the mixing chamber 3 according to the set temperature to ensure that the material is within a suitable reaction temperature range.

[0033] Furthermore, multiple temperature sensors 4 are installed inside the mixing chamber 3 to collect the temperature information of the material during the mixing process in real time. The temperature data is transmitted via signal lines to the control cabinet 2, which is fixedly installed on one side of the base frame 1. The control cabinet 2 integrates a controller and a temperature control execution module. The controller receives feedback signals from the temperature sensors 4 and automatically adjusts the working power of the heating wire winding strip 72 through the temperature control execution module, thereby realizing dynamic constant temperature control during the mixing process.

[0034] A feeding preheating box 8 is fixedly connected to the upper end of the mixing chamber 3, which is used to perform preliminary heating treatment on the material before it enters the mixing chamber 3. A discharge port 6 is provided at the lower end of the mixing chamber 3. To prevent heat loss, the inlet of the feeding preheating box 8 is sealed by a removable sealing cover 9.

[0035] To further improve the preheating effect, the outside of the feeding preheating box 8 is wrapped with an insulation sleeve 20, and a heating tube 21 is embedded in the insulation sleeve 20 to heat the material inside the feeding preheating box 8, so as to ensure that it has a high initial temperature before entering the mixing chamber 3, thereby shortening the overall heating time and improving the heat transfer efficiency.

[0036] Temperature sensor 22 is installed on the top wall of the feeding preheating box 8 to monitor the temperature changes of the material inside the feeding preheating box 8 in real time. In addition, temperature sensor 4 is installed inside the mixing chamber 3 to work in conjunction with temperature sensor 22. Both are covered with protective shells to effectively protect them without affecting their normal temperature measurement function.

[0037] The feeding preheating box 8 has two symmetrically arranged feed ports, and a sealing plate 17 is slidably installed at the bottom of each feed port to control the feeding and discharging of materials. Side rails 10 are fixedly installed on both sides of the feeding preheating box 8, and the two sets of sealing plates 17 are slidably installed in the corresponding side rails 10 to achieve stable opening and closing movement of the sealing plates 17.

[0038] A vertical rail 13 is fixedly connected to the upper part of each set of side rails 10. A connecting rod 18 is slidably installed inside the vertical rail 13. A scraper 19 is connected to the lower end of the connecting rod 18. The two sets of scrapers 19 are located in the two feed inlets respectively, and are used to remove the material adhering to the inner wall of the feed preheating box 8 to prevent caking and blockage.

[0039] Furthermore, two sets of bidirectional lead screws 11 are rotatably installed within the two sets of side rails 10, and the two sets of bidirectional lead screws 11 are synchronously driven by a transmission component 12. The transmission component 12 includes two synchronous pulleys and a synchronous belt fitted between the synchronous pulleys, wherein at least one synchronous pulley is driven to rotate by a drive motor, thereby realizing the synchronous rotation of the two sets of bidirectional lead screws 11. Each set of bidirectional lead screws 11 is threadedly connected to a corresponding set of sealing plates 17, driving the sealing plates 17 to reciprocate along the side rail 10, thereby opening and closing the feed inlet.

[0040] A reciprocating lead screw 14 is rotatably installed inside the vertical rail 13. The reciprocating lead screw 14 is threadedly connected to the connecting rod 18 and is used to drive the scraper 19 to move up and down. The lower end of the reciprocating lead screw 14 is connected to a bevel gear 15. A bevel gear 16 is fixedly connected to the middle of a set of bidirectional lead screws 11. The bevel gear 15 and the bevel gear 16 mesh with each other to form a linkage transmission structure.

[0041] When the drive motor starts, it drives the bidirectional lead screw 11 to rotate through the transmission component 12, which in turn drives the sealing plate 17 to move outward and open the feed port. At the same time, the meshing transmission of bevel gear 15 and bevel gear 2 16 causes the reciprocating lead screw 14 to rotate synchronously, driving the connecting rod 18 and scraper 19 to move downward and clean the residual material on the inner wall of the feed preheating box 8.

[0042] In summary, the working principle of the temperature-controlled rapid mixing device for ash-mixed clay roadbed according to this utility model embodiment is as follows: the material in the mixing chamber 3 is heated by the temperature control component 7, the temperature sensor 4 works with the controller to achieve dynamic constant temperature, the heating tube 21 outside the feeding preheating box 8 preheats the material, the temperature sensor 22 monitors the temperature, the drive motor drives the bidirectional lead screw 11 to rotate, drives the sealing plate 17 to open the feed port, and at the same time, the scraper 19 moves down to clean the material through the meshing transmission of bevel gear 15 and bevel gear 16, realizing the linkage control of material preheating, automatic feeding and inner wall cleaning.

[0043] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A temperature-controlled rapid mixing device for lime-blended clay subgrade, characterized in that: Includes a base frame (1) and a mixing chamber (3) mounted on the base frame (1). The mixing chamber (3) has a cylindrical structure, with a mixing component (5) inside and a temperature control component (7) wrapped around it. The mixing chamber (3) has a feeding preheating box (8) at the upper end and a discharge port (6) at the lower end. The feeding port of the feeding preheating box (8) is sealed by a sealing cover (9).

2. The temperature-controlled lime-soil clay subgrade rapid mixing device according to claim 1, characterized in that: The temperature control component (7) includes a thermally conductive metal shell (71), a heating wire winding strip (72), and a heat insulation layer (73). The heating wire winding strip (72) is connected to the power supply through the controller and can uniformly heat the inside of the mixing chamber (3) according to the set temperature.

3. The temperature-controlled lime-soil clay subgrade rapid mixing device according to claim 2, characterized in that: Multiple temperature sensors (4) are installed in the mixing chamber (3). The control cabinet (2) is fixed on one side of the base frame (1). The control cabinet (2) integrates a controller. The temperature sensors (4) collect material temperature information in real time and transmit the signal to the controller. The controller automatically adjusts the heating power of the heating wire winding strip (72) through the temperature control execution module to achieve dynamic constant temperature control during the mixing process.

4. The temperature-controlled lime-soil clay subgrade rapid mixing device according to claim 3, characterized in that: The feed preheating box (8) is wrapped with an insulation sleeve (20) on the outside, and a heating tube (21) is embedded in the insulation sleeve (20). A temperature sensor (22) is installed on the upper wall inside the feed preheating box (8).

5. The temperature-controlled lime-soil clay subgrade rapid mixing device according to claim 4, characterized in that: The feeding preheating box (8) has two feeding ports, and a sealing plate (17) is slidably installed at the bottom of each feeding port. Side rails (10) are installed on both sides of the feeding preheating box (8), and the two sides of the sealing plate (17) slide in the two sets of side rails (10) respectively.

6. The temperature-controlled lime-soil clay subgrade rapid mixing device according to claim 5, characterized in that: A vertical rail (13) is fixedly installed on the upper side of the side rail (10). A connecting rod (18) slides inside the vertical rail (13). The lower end of the connecting rod (18) is connected to two sets of scrapers (19). The two sets of scrapers (19) are located in the two feed inlets of the feed preheating box (8).

7. The temperature-controlled rapid mixing device for lime-blended clay subgrade according to claim 6, characterized in that: Both sets of side rails (10) are rotatably equipped with bidirectional lead screws (11). The two sets of bidirectional lead screws (11) are connected by a transmission component (12). The two sets of bidirectional lead screws (11) are threadedly connected to the two sets of sealing plates (17) respectively. The transmission component (12) is driven by a motor.

8. The temperature-controlled rapid mixing device for lime-blended clay subgrade according to claim 7, characterized in that: A reciprocating screw (14) is rotatably installed inside the vertical rail (13), and the reciprocating screw (14) is threadedly connected to the connecting rod (18).

9. The temperature-controlled rapid mixing device for lime-blended clay subgrade according to claim 8, characterized in that: The lower end of the reciprocating lead screw (14) is connected to a bevel gear one (15), and the middle part of a set of bidirectional lead screws (11) is connected to a bevel gear two (16), and the bevel gear one (15) and the bevel gear two (16) mesh.

10. The temperature-controlled rapid mixing device for lime-blended clay subgrade according to claim 1, characterized in that: The stirring assembly (5) includes a main shaft and a spiral propulsion blade. The main shaft passes through the stirring chamber (3) and is connected to the drive motor. The spiral propulsion blade is used to propel the material forward.

Images