Anti-caking constant-temperature mixer for cable material production

Abstract

The invention relates to the technical field of cable material production, and particularly discloses an anti-caking constant-temperature mixer for cable material production, which comprises a mixing outer cavity which is a heat preservation jacket of the mixer, a mixing inner cavity is embedded in the mixing outer cavity, and the mixing outer cavity and the mixing inner cavity enclose to form a double-layer cavity structure; a top sealing cover plate covers the top of the outer mixing cavity in a sealing manner, and a driving motor is fixedly mounted on the top sealing cover plate. According to the anti-caking constant-temperature mixer for cable material production, the heating wire is arranged in the heat preservation cavity defined by the outer mixing cavity and the inner mixing cavity, heat loss is reduced through cooperation with the cavity wall heat preservation tinfoil, meanwhile, the heating plate is installed in the cavity of the inner column body, and a global heating pattern of the outer wall and the center is formed; all areas of the inverted-U-shaped cavity of the inner mixing cavity are heated evenly, temperature data are fed back in real time by combining a temperature detector on the top sealing cover plate, the heating power is dynamically adjusted through a controller of the heating wire, and the cavity is made to be constant in temperature and stable.

Description

Technical Field

[0001] This invention relates to the field of cable material production technology, specifically to a constant-temperature mixing machine for producing anti-caking cable materials. Background Technology

[0002] In the production of cable materials, to ensure uniform mixing and avoid clumping caused by moisture and temperature fluctuations, a constant-temperature mixer has become one of the core processing equipment. A typical constant-temperature mixer consists of a mixing chamber, heating components, a mixing mechanism, a temperature control system, and a discharge device. This type of equipment is widely used in the production of cable materials such as polyvinyl chloride (PVC) and polyethylene (PE). Its core design lies in maintaining the temperature within the chamber within a set range through the linkage of a temperature sensor and controller, thereby reducing the risk of clumping due to temperature differences and meeting the material flow requirements of subsequent extrusion, injection molding, and other processing steps. However, existing constant-temperature mixers have some shortcomings in actual use, such as: The heating components are mostly arranged in a single direction, resulting in uneven temperature distribution within the cavity. The temperature is higher near the heating source and lower in areas further away, creating local temperature differences. This leads to the agglomeration and accumulation of materials in the low-temperature areas. Furthermore, the stirring blades are mostly of a single spiral or straight plate structure, which does not adequately cover the materials in the corners and bottom of the cavity, easily creating dead zones. The stagnant materials remain in a static state for a long time, gradually agglomerating and clumping together.

[0003] To address the aforementioned issues, there is an urgent need for innovative design based on the existing constant-temperature mixing machine used in the production of anti-caking cable materials. Summary of the Invention

[0004] The purpose of this invention is to provide a constant-temperature mixing machine for cable material production that prevents caking, in order to solve the problems mentioned in the background art, where the heating components are mostly arranged in a single direction, resulting in uneven temperature distribution within the cavity, with higher temperatures near the heating source and lower temperatures further away, creating local temperature differences. This leads to the accumulation of caking material in low-temperature areas. Furthermore, the mixing blades are mostly of a single spiral or straight plate structure, which does not adequately cover the material in the corners and bottom of the cavity, easily creating dead zones in the mixing process. The stagnant material remains in a static state for a long time, gradually agglomerating and caking.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a constant temperature mixing machine for producing anti-caking cable materials, comprising a mixing outer cavity, which is an insulating outer shell of the mixing machine, wherein a mixing inner cavity is embedded inside the mixing outer cavity, and the two together form a double-layer cavity structure. The top of the mixing outer cavity is sealed with a top sealing cover plate, and a drive motor is fixedly installed on the top sealing cover plate. The power output end of the drive motor extends downward and connects to the connecting shaft frame, and the connecting shaft frame penetrates into the mixing inner cavity. A heating wire is provided between the mixing outer cavity and the mixing inner cavity, and the controller of the heating wire is installed on the outer wall of the mixing outer cavity through a metal bracket. An inner column is integrally fixed at the center of the mixing cavity, and a heating plate is installed inside the cavity of the inner column. The top of the inner column is rotatably connected to the bottom of the connecting shaft frame, and the bottom of the connecting shaft frame is provided with auxiliary material crushing blades, inclined anti-sticking mixing blades and anti-caking stirring shovels in sequence from top to bottom through a metal bracket.

[0006] By adopting the above technical solution, through the structural design of double-layer cavity bidirectional heating and layered combination stirring components, it is possible to achieve constant temperature throughout the entire area and stirring without dead angles.

[0007] Preferably, the gap between the mixing outer cavity and the mixing inner cavity is a heat-insulating cavity, and the inner wall of the heat-insulating cavity is covered with heat-insulating tin foil, and a heating wire is installed inside the heat-insulating cavity.

[0008] By adopting the above technical solution, the insulation cavity is covered with insulation tin foil and has a built-in heating wire, which reduces heat loss, enhances the temperature uniformity of the cavity, and avoids material clumping caused by local temperature differences.

[0009] Preferably, the mixing cavity and the inner column are integrally formed, and the chamber formed by the inner column and the mixing cavity is an inverted U-shaped structure.

[0010] By adopting the above technical solution, the one-piece molding structure improves the rigidity of the cavity, and the inverted U-shaped cavity optimizes the material flow path, reduces dead corners, and helps to improve the stirring and anti-caking effect.

[0011] Preferably, the bottom end of the mixing cavity is provided with discharge pipes at equal intervals around the periphery, and the discharge pipes are provided with discharge valves.

[0012] The above technical solution, with its circumferentially spaced discharge pipes and discharge valves, accelerates material discharge, prevents material from accumulating, compacting, and caking at the discharge port, and improves the smoothness of material discharge.

[0013] Preferably, a nitrogen inlet pipe and a temperature detector are symmetrically installed at the top of the top sealing cover, and the nitrogen inlet pipe is connected to the internal chamber of the mixing cavity.

[0014] The above technical solution uses a nitrogen inlet pipe to create a dry environment and a temperature detector to control the temperature in real time. This dual approach reduces the risk of materials getting damp and clumping due to temperature differences.

[0015] Preferably, the probe end of the temperature detector faces into the cavity of the mixing chamber.

[0016] By adopting the above technical solution, the probe tip faces the chamber to ensure accurate temperature detection, provide reliable data support for constant temperature control, and avoid clumping caused by temperature control deviation.

[0017] Preferably, the auxiliary material crushing blade, the inclined anti-sticking mixing blade, and the anti-caking mixing shovel are all located within the cavity of the mixing chamber.

[0018] With the above technical solution, all stirring components are located inside the chamber, covering the entire area of ​​the chamber, effectively reducing the retention and clumping of materials inside the chamber.

[0019] Preferably, the auxiliary material crushing blade is a serrated blade, and there is a gap between the cutting edge of the auxiliary material crushing blade and the top inner wall of the mixing cavity.

[0020] Using the above technical solution, the serrated blade can break up the clumps of material at the top, and the reasonable gap avoids mechanical wear, thus improving the anti-clumping effect in the top area.

[0021] Preferably, the blade surface of the inclined anti-stick mixing blade is coated with a polytetrafluoroethylene anti-stick coating, and a gap is left between the edge of the inclined anti-stick mixing blade and the side wall of the mixing cavity.

[0022] By adopting the above technical solution, the polytetrafluoroethylene coating reduces material adhesion and prevents material from sticking to the wall and accumulating.

[0023] Preferably, the shovel surface of the anti-caking mixing shovel is in contact with the bottom inner wall of the mixing cavity, and the shovel opening of the anti-caking mixing shovel faces the discharge pipe.

[0024] By adopting the above technical solution, the material is removed by adhering to the bottom structure and pushed towards the discharge pipe to accelerate the flow, avoid caking in the bottom dead corners, and ensure smooth discharge.

[0025] Compared with the prior art, the beneficial effects of the present invention are: the constant temperature mixing machine for producing anti-caking cable materials: 1. A heating wire is installed in the insulation cavity enclosed by the outer and inner mixing cavities. The heat loss is reduced by the insulation foil on the cavity wall. At the same time, a heating plate is installed in the cavity of the inner column, forming a full-area heating pattern of the outer wall and the center. This ensures that all areas of the inverted U-shaped cavity of the mixing cavity are heated evenly. Combined with the temperature detector on the top sealing cover, the temperature data is fed back in real time. The heating power is dynamically adjusted by the controller of the heating wire, so that the cavity temperature is kept constant and stable, effectively preventing the material from agglomerating and accumulating due to the retention of low temperature areas. 2. This mixer adopts a layered combined mixing structure to achieve full-area mixing without dead corners. The auxiliary material crushing blades, inclined anti-sticking mixing blades, and anti-caking mixing shovels are arranged sequentially from top to bottom on the connecting shaft frame. They are adapted to the top, middle and bottom areas of the mixing cavity, respectively. The serrated auxiliary material crushing blades can directly break up the material clumps at the top. The inclined anti-sticking mixing blades are coated with polytetrafluoroethylene to prevent material adhesion. At the same time, they can tumble the material in the middle. The anti-caking mixing shovels fit against the bottom inner wall of the cavity and push the deposited material towards the discharge pipe. In addition, the inverted U-shaped structure formed by the mixing cavity and the inner column optimizes the material flow path, so that the blades can cover the corners and bottom of the cavity when they rotate, eliminating the long-term static retention of materials and completely avoiding agglomeration and clumping. 3. Dry nitrogen is introduced into the chamber through the nitrogen inlet pipe. Combined with the sealing effect of the top sealing cover, a dry environment is created, reducing the possibility of material caking due to moisture. The PTFE coating of the inclined anti-stick mixing blades and the close-fitting pushing structure of the anti-caking stirring spatula reduce the probability of material adhering to the chamber wall and accelerate material flow, avoiding local accumulation and compaction. The integrated molding structure of the mixing inner cavity and the inner column improves the rigidity of the cavity, ensuring the stable operation of each component during the mixing process. The reasonable gap between the blades and the cavity wall ensures the mixing effect and avoids mechanical wear. This mixer reduces the caking rate of cable material through multiple guarantees such as constant temperature control, dead-angle mixing, and anti-stick pushing, while improving the material mixing uniformity and ensuring the material flowability requirements of subsequent processing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall disassembled three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the mixing outer cavity and the mixing inner cavity of the present invention. Figure 4 This is a schematic diagram of the overall internal cross-sectional three-dimensional structure of the present invention; Figure 5 This is a schematic diagram of the overall internal side cross-section of the present invention. Figure 6 This is a top-view three-dimensional structural diagram of the overall internal structure of the present invention; Figure 7 This is a cross-sectional three-dimensional structural diagram of the mixing outer cavity and mixing inner cavity of the present invention; Figure 8 This is a side-sectional three-dimensional structural diagram of the mixing outer cavity and the top sealing cover plate of the present invention. Figure 9 This is a three-dimensional structural diagram showing the auxiliary material crushing blade, the inclined anti-sticking mixing blade, and the anti-caking stirring shovel of the present invention. Figure 10 This is a three-dimensional structural diagram of the auxiliary material crushing blade, the inclined anti-sticking mixing blade, and the anti-caking mixing shovel of the present invention.

[0027] In the diagram: 1. Mixing outer cavity; 2. Mixing inner cavity; 3. Discharge pipe; 4. Discharge valve; 5. Heating wire; 6. Inner column; 7. Heating plate; 8. Top sealing cover; 9. Nitrogen inlet pipe; 10. Temperature detector; 11. Drive motor; 12. Connecting shaft frame; 13. Auxiliary material crushing blade; 14. Inclined anti-sticking mixing blade; 15. Anti-caking mixing shovel. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-10 The present invention provides a technical solution: a constant temperature mixer for producing cable materials with anti-caking properties, comprising an outer mixing cavity 1, an inner mixing cavity 2, a discharge pipe 3, a discharge valve 4, a heating wire 5, an inner column 6, a heating plate 7, a top sealing cover 8, a nitrogen inlet pipe 9, a temperature detector 10, a drive motor 11, a connecting shaft frame 12, auxiliary material crushing blades 13, an inclined anti-sticking mixing blade 14, and an anti-caking stirring shovel 15; Among them, the mixing outer cavity 1 is the heat-insulating outer shell of the mixer, and the mixing inner cavity 2 is embedded inside the mixing outer cavity 1. The two are enclosed to form a double-layer cavity structure. The top of the mixing outer cavity 1 is sealed with a top sealing cover plate 8, and a drive motor 11 is fixedly installed on the top sealing cover plate 8. A nitrogen inlet pipe 9 and a temperature detector 10 are symmetrically installed at the top of the top sealing cover plate 8. The nitrogen inlet pipe 9 is connected to the internal chamber of the mixing inner cavity 2. The detection end of the temperature detector 10 faces the chamber of the mixing inner cavity 2. The power output end of the drive motor 11 extends downward and is connected to the connecting shaft frame 12. The connecting shaft frame 12 penetrates into the mixing inner cavity 2. A heating wire 5 is provided between the mixing outer cavity 1 and the mixing inner cavity 2. The controller of the heating wire 5 is installed on the outer wall of the mixing outer cavity 1 through a metal bracket. Referring to the attached diagrams in the instruction manual Figures 1-6As shown, first fix the mixing outer cavity 1 on the horizontal mounting surface, then precisely embed the mixing inner cavity 2 into the mixing outer cavity 1, the two enclose to form a heat preservation cavity, attach heat preservation tin foil to the inner wall of the heat preservation cavity, and evenly place the heating wire 5 in the heat preservation cavity. At the same time, fix the controller of the heating wire 5 to the outer wall of the mixing outer cavity 1 through the metal bracket to complete the assembly of the temperature control component. Since the mixing inner cavity 2 and the inner column 6 are integrally formed, after installation, the heating plate 7 is installed directly in the inverted U-shaped cavity formed by them. The heating plate 7 is firmly attached to the inner wall of the inner column 6. The inner column 6 is made of metal, which facilitates stable transmission to the inner cavity and keeps the temperature in the mixing inner cavity 2 evenly distributed. The top sealing cover plate 8 is sealed and covered on the top of the mixing outer cavity 1. Nitrogen inlet pipe 9 and temperature detector 10 are symmetrically installed on the top of the top sealing cover plate 8 in sequence, ensuring that nitrogen inlet pipe 9 is connected to the inner cavity of the mixing inner cavity 2 and the probe end of temperature detector 10 faces the cavity. Then, the drive motor 11 is fixedly installed in the preset position of the top sealing cover plate 8. Connect one end of the connecting shaft frame 12 to the power output end of the drive motor 11, and extend the other end through the top sealing cover plate 8 into the mixing cavity 2, and rotate it to the top of the inner column 6. Through the metal bracket, install the auxiliary material crushing blade 13, the inclined anti-sticking mixing blade 14 and the anti-caking mixing shovel 15 sequentially from top to bottom at the bottom of the connecting shaft frame 12. At this time, all three are located in the cavity of the mixing cavity 2. Install the discharge pipe 3 at equidistant positions around the bottom of the mixing cavity 2, and assemble the discharge valve 4 in each discharge pipe 3. Check the tightness and sealing performance of each component connection to complete the overall installation. The gap between the mixing outer cavity 1 and the mixing inner cavity 2 is an insulation cavity, and the inner wall of the insulation cavity is covered with insulation tin foil. A heating wire 5 is installed inside the insulation cavity. The mixing inner cavity 2 and the inner column 6 are integrally formed structures, and the chamber formed by the inner column 6 and the mixing inner cavity 2 is an inverted U-shaped structure. Discharge pipes 3 are equidistantly arranged around the bottom of the mixing inner cavity 2, and discharge valves 4 are installed inside the discharge pipes 3. The inner column 6 is integrally fixed at the center of the mixing inner cavity 2, and a heating plate 7 is installed inside the cavity of the inner column 6. The top of the inner column 6 is rotatably connected to the bottom of the connecting shaft frame 12, and auxiliary material crushing blades 1 are arranged sequentially from top to bottom through a metal bracket at the bottom of the connecting shaft frame 12. 3. The inclined anti-sticking mixing blade 14 and the anti-caking mixing shovel 15, and the auxiliary material crushing blade 13 are all located in the cavity of the mixing inner cavity 2. The auxiliary material crushing blade 13 is a serrated blade, and there is a gap between the cutting edge of the auxiliary material crushing blade 13 and the top inner wall of the mixing inner cavity 2. The blade surface of the inclined anti-sticking mixing blade 14 is coated with a polytetrafluoroethylene anti-sticking coating, and there is a gap between the edge of the inclined anti-sticking mixing blade 14 and the side wall of the mixing inner cavity 2. The shovel surface of the anti-caking mixing shovel 15 is in contact with the bottom inner wall of the mixing inner cavity 2, and the shovel mouth of the anti-caking mixing shovel 15 faces the direction of the discharge pipe 3. Referring to the attached diagrams in the instruction manual Figures 1-6 As shown, the heating wire 5 and the heating plate 7 inside the cavity of the inner column 6 are activated. The heat preservation cavity reduces heat loss through heat preservation foil. The temperature detector 10 detects the temperature of the top, middle and bottom of the mixing inner cavity 2 in real time and feeds the data back to the controller of the heating wire 5 to dynamically adjust the heating power until the cavity temperature stabilizes within the set constant temperature range and enters the standby state. Dry nitrogen is introduced into the inner chamber of the mixing cavity 2 through the nitrogen inlet pipe 9 on the top sealing cover plate 8 to replace the humid air in the chamber and create a dry environment, thereby preventing the cable material from getting damp and clumping. After the cable material raw material is put into the chamber of the mixing cavity 2, the drive motor 11 is started, and its power output end drives the connecting shaft frame 12 to rotate at a constant speed. The serrated auxiliary material crushing blade 13 at the top rotates at high speed to break up the clumps that have formed in the raw material. The inclined anti-stick mixing blade 14 in the middle uses the polytetrafluoroethylene anti-stick coating on the surface of the blade to prevent the material from sticking. At the same time, it stirs the material in the middle of the chamber in all directions. The anti-clumping mixing shovel 15 at the bottom fits against the bottom inner wall of the mixing cavity 2, which facilitates pushing the deposited material towards the discharge pipe 3 for easy discharge and reduces the dead corners of the mixing. During the mixing process, the heating wire 5 and the heating plate 7 work together continuously. The temperature of the heating wire 5 and the heating plate 7 is adjusted by the controller cable. The temperature detector 10 monitors and maintains the constant temperature of the chamber in real time. After the materials are mixed evenly, the discharge valve 4 in the discharge pipe 3 is opened. The anti-caking mixing shovel 15 continuously pushes the materials so that the materials are smoothly discharged through the discharge pipe 3, completing the entire mixing operation. After the operation is completed, the power of each component is turned off and the residual materials in the chamber are cleaned.

[0030] Working principle: When using this anti-caking cable material production constant temperature mixer, first start the heating wire 5 in the heat-insulating cavity enclosed by the mixing outer cavity 1 and the mixing inner cavity 2, and simultaneously turn on the heating plate 7 in the cavity of the inner column 6. The temperature detector 10 on the top sealing cover 8 detects the temperature of the mixing inner cavity 2 in real time. After the temperature stabilizes to the set value, it enters the constant temperature standby state. Dry nitrogen is introduced into the mixing chamber 2 through the nitrogen inlet pipe 9 on the top sealing cover plate 8 to expel moisture from the chamber and prevent the cable material from getting damp and clumping after feeding. The drive motor 11 is started, and its power end drives the connecting shaft frame 12 to rotate. The auxiliary material crushing blade 13 at the top breaks up the material clumps at the top of the chamber. The inclined anti-sticking mixing blade 14 in the middle uses a polytetrafluoroethylene coating to prevent sticking and stirs the material synchronously. The anti-clumping mixing shovel 15 at the bottom fits against the bottom inner wall of the mixing chamber 2, scoops up the deposited material and pushes it towards the discharge pipe 3. During mixing, the heating wire 5 and heating plate 7 work together with the temperature detector 10 to maintain a constant temperature in the chamber. After mixing is completed, the discharge valve 4 in the discharge pipe 3 is opened, and the anti-caking mixing shovel 15 pushes the material out through the discharge pipe 3 to complete the mixing operation.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A constant-temperature mixing machine for producing anti-caking cable materials, comprising: The mixing outer cavity (1) is the heat-insulating outer shell of the mixer. The mixing outer cavity (1) is fitted with the mixing inner cavity (2), and the two together form a double-layer cavity structure. The characteristics are as follows: the top of the mixing outer cavity (1) is sealed with a top sealing cover plate (8), and a drive motor (11) is fixedly installed on the top sealing cover plate (8). The power output end of the drive motor (11) extends downward and connects to the connecting shaft frame (12). The connecting shaft frame (12) penetrates into the mixing inner cavity (2). A heating wire (5) is provided between the mixing outer cavity (1) and the mixing inner cavity (2). The controller of the heating wire (5) is installed on the outer wall of the mixing outer cavity (1) through a metal bracket. The mixing cavity (2) is integrally fixed with an inner column (6) at its center, and a heating plate (7) is installed in the cavity of the inner column (6). The top of the inner column (6) is rotatably connected to the bottom of the connecting shaft frame (12), and the bottom of the connecting shaft frame (12) is provided with an auxiliary material crushing blade (13), an oblique anti-sticking mixing blade (14), and an anti-caking mixing shovel (15) in sequence from top to bottom through a metal bracket.

2. The constant-temperature mixing machine for producing anti-caking cable materials according to claim 1, characterized in that: The gap between the mixing outer cavity (1) and the mixing inner cavity (2) is a heat preservation cavity, and the inner wall of the heat preservation cavity is covered with heat preservation tin foil, and a heating wire (5) is installed in the heat preservation cavity.

3. The constant-temperature mixing machine for producing anti-caking cable materials according to claim 1, characterized in that: The mixing inner cavity (2) and the inner column (6) are integrally formed structures, and the chamber formed by the inner column (6) and the mixing inner cavity (2) is an inverted U-shaped structure.

4. The constant-temperature mixing machine for producing anti-caking cable materials according to claim 1, characterized in that: The mixing cavity (2) is provided with discharge pipes (3) at equal intervals around the bottom, and discharge valves (4) are provided inside the discharge pipes (3).

5. A constant-temperature mixing machine for producing anti-caking cable materials according to claim 1, characterized in that: The top sealing cover (8) is symmetrically equipped with a nitrogen inlet pipe (9) and a temperature detector (10), and the nitrogen inlet pipe (9) is connected to the internal chamber of the mixing cavity (2).

6. A constant-temperature mixing machine for producing anti-caking cable materials according to claim 5, characterized in that: The probe of the temperature detector (10) faces into the cavity of the mixing chamber (2).

7. A constant-temperature mixing machine for producing anti-caking cable materials according to claim 1, characterized in that: The auxiliary material crushing blade (13), the inclined anti-sticking mixing blade (14), and the anti-caking mixing shovel (15) are all located in the cavity of the mixing inner cavity (2).

8. A constant-temperature mixing machine for producing anti-caking cable materials according to claim 1, characterized in that: The auxiliary material crushing blade (13) is a serrated blade, and there is a gap between the cutting edge of the auxiliary material crushing blade (13) and the top inner wall of the mixing cavity (2).

9. A constant-temperature mixing machine for producing anti-caking cable materials according to claim 1, characterized in that: The blade surface of the inclined anti-stick mixing blade (14) is coated with a polytetrafluoroethylene anti-stick coating, and there is a gap between the edge of the inclined anti-stick mixing blade (14) and the side wall of the mixing cavity (2).

10. A constant-temperature mixing machine for producing anti-caking cable materials according to claim 1, characterized in that: The shovel surface of the anti-caking mixing shovel (15) is in contact with the bottom inner wall of the mixing cavity (2), and the shovel opening of the anti-caking mixing shovel (15) faces the discharge pipe (3).

Images