A grinding mill for producing a terminating agent

Abstract

This utility model provides a grinding mill for producing terminators, belonging to the field of terminator production equipment. It includes a grinding chamber and a main shaft. The grinding chamber is internally divided into an expansion chamber, a homogenizing chamber, and a contraction chamber along the material flow direction, with these three chambers integrally formed. The main shaft passes through the grinding chamber, and its portion within the grinding chamber is circumferentially equipped with a dispersion disc, a spiral guide plate, and a classifying plate. The dispersion disc is located in the contraction chamber, the spiral guide plate in the homogenizing chamber, and the classifying plate in the contraction chamber. The outer wall of the grinding chamber has an annular cooling channel and a cooling interface, with the cooling interface communicating with the annular cooling channel. By sequentially arranging the expansion chamber, homogenizing chamber, and contraction chamber within the grinding chamber, and coordinating the operation of the dispersion disc, spiral guide plate, and classifying plate, the residence time of the material within the grinding chamber is increased, enhancing the contact area between the grinding media and the material, improving grinding uniformity and efficiency, and ultimately improving product quality.

Description

Technical Field

[0001] This utility model relates to the field of equipment for producing terminators, specifically to a grinding mill for producing terminators. Background Technology

[0002] As a key auxiliary agent in the polymerization process, the fineness of the terminator directly determines the termination efficiency, product purity, and the performance of subsequent products. Therefore, high-precision grinding is essential in the production process of terminators.

[0003] Currently, the grinding of terminators mostly adopts traditional horizontal grinding mills. The working principle is that the material and the grinding media in the cylinder are stirred together by a high-speed rotating dispersion disc, which causes the material and the grinding media to generate stronger collision, friction and shearing effects, thereby accelerating the grinding of fine particles and dispersing aggregates.

[0004] However, in practical applications, most grinding mills use a cylindrical straight cavity structure for the grinding chamber. This results in uneven distribution of material residence time, and the smooth inner wall of the straight cavity makes it easy for the material to flow in a straight line along the axis, forming a "short-circuit flow" phenomenon. Some material is discharged before it is fully ground, resulting in large fluctuations in the fineness of the material and affecting the quality of the final product. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a grinding machine for producing a terminator, so as to at least partially solve the problems mentioned in the background art.

[0006] The technical solution adopted by this utility model is as follows: A grinding mill for producing a terminator, comprising: The grinding chamber is divided into an expansion chamber, a homogenization chamber, and a contraction chamber along the material flow direction, and the three chambers are integrally formed. The main shaft passes through the grinding chamber, and the portion of the main shaft located in the grinding chamber is provided with a dispersion disc, a spiral guide plate and a grading plate in sequence along the circumference. The dispersion disc is located in the shrinkage chamber, the spiral guide plate is located in the homogenization chamber and the grading plate is located in the shrinkage chamber. The outer wall of the grinding chamber is provided with an annular cooling channel and a cooling interface, and the cooling interface is connected to the annular cooling channel.

[0007] Furthermore, the length of the expansion cavity is 1 / 4 of the total length of the grinding chamber, the inner wall of the expansion cavity has a funnel-shaped structure with a rounded transition, and the outer edge of the dispersion disk slides in conjunction with the inner wall of the expansion cavity; The expansion chamber has a sand inlet and a feed inlet at its inlet, with the feed inlet located above the sand inlet.

[0008] Furthermore, the homogenizing cavity is cylindrical, with its inlet end connected to the outlet end of the expansion cavity. The length of the homogenizing cavity is 1 / 2 of the length of the grinding chamber. The spiral guide plate extends spirally along the axial direction of the homogenizing cavity, and its surface is provided with guide grooves. The spiral guide plate is slidably connected to the inner wall of the homogeneous cavity.

[0009] Furthermore, the length of the shrinkage cavity is 1 / 4 of the total length of the grinding chamber, the inner wall of the shrinkage cavity has a tapered structure with a gradually narrowing shape, and the outer edge of the grading plate is in clearance fit with the inner wall of the shrinkage cavity. The end of the shrinkage chamber is provided with a discharge port.

[0010] Furthermore, it also includes a control cabinet, a drive motor, and a frame. The control cabinet is located on one side of the frame, and the drive motor is fixed on the frame, with its output end connected to the main shaft drive. The bottom of the grinding chamber is provided with a support base, which is fixedly connected to the outer wall of the grinding chamber and slidably connected to the frame.

[0011] Furthermore, a sludge collection tank is provided at the lower part of the grinding chamber, and the sludge collection tank is connected to the frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By sequentially setting an expansion chamber, a homogenization chamber, and a contraction chamber in the grinding chamber, and coordinating the operation of a dispersion disc, a spiral guide plate, and a classifying plate, the residence time of materials in the grinding chamber is increased, the contact area between the grinding media and the materials is enhanced, the grinding uniformity and efficiency are improved, and the product quality is improved. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a grinding mill used for producing a terminator according to an embodiment of the present invention; Figure 2 This is a front view schematic diagram of a grinding mill used for producing a terminator according to an embodiment of the present invention; Figure 3 This is a top view schematic diagram of a grinding mill used for producing a terminator according to an embodiment of the present invention; Figure 4 for Figure 3 Schematic diagram of the AA section along the middle.

[0014] In the picture: 1. Control cabinet; 2. Drive motor; 3. Connecting seat; 4. Cooling interface; 5. Support seat; 6. Expansion chamber; 7. Homogenization chamber; 8. Contraction chamber; 9. Frame; 10. Sand inlet; 11. Feed inlet; 12. Discharge outlet; 13. Grading plate; 14. Spiral guide plate; 15. Dispersion disc; 16. Main shaft; 17. Sludge collection tank.

[0015] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] like Figures 1-4 As shown, in some embodiments, such as Figures 1-4 As shown, in some embodiments, a grinding mill for producing a terminator includes a grinding chamber and a spindle 16, the spindle 16 being disposed through the interior of the grinding chamber.

[0019] The grinding chamber is equipped with an expansion chamber 6, a homogenization chamber 7, and a contraction chamber 8 in sequence along the material flow direction. These three chambers are designed as a single piece. During the grinding process, the material will pass through the expansion chamber 6 for initial dispersion, the homogenization chamber 7 for efficient grinding, and the contraction chamber 8 for rectification, thereby ensuring that the material is fully ground.

[0020] In addition, the portion of the main shaft 16 located inside the grinding chamber is provided with a dispersion disc 15, a spiral guide plate 14, and a grading plate 13 in sequence along the circumference.

[0021] The dispersing disc 15 is set inside the shrinkage chamber 8. When the material enters the shrinkage chamber 8, its main function is to fully disperse the material so that the material is more evenly distributed in the grinding chamber.

[0022] The spiral guide plate 14 is installed in the homogenization chamber 7. When the material flows through the homogenization chamber 7, it guides the material to flow along a specific spiral path. During the continuous rotation of the main shaft 16, it increases the contact time and shear frequency between the grinding media and the material.

[0023] The grading plate 13 is set in the shrinkage chamber 8. Its function is to guide the material that meets the particle size requirements to be discharged smoothly, while intercepting the material with excessively large particle size and the grinding media, so that they are fully ground and the output material has a uniform particle size distribution that meets the process requirements.

[0024] By sequentially setting an expansion chamber 6, a homogenization chamber 7, and a contraction chamber 8 in the grinding chamber, and coordinating the operation of a dispersion disc 15, a spiral guide plate 14, and a classifying plate 13, the residence time of materials in the grinding chamber is increased, the contact area between the grinding media and the materials is enhanced, the grinding uniformity and efficiency are improved, and the product quality is improved.

[0025] Finally, an annular cooling channel and cooling interface 4 are installed on the outer wall of the grinding chamber. The annular cooling channel surrounds the outer wall of the grinding chamber, effectively removing the heat generated during the grinding process and preventing the grinding chamber from overheating, which could affect the grinding effect and the service life of the equipment. Cooling interface 4 is connected to the annular cooling channel, through which coolant can be introduced into the annular cooling channel to continuously cool the grinding chamber, ensuring that the grinding machine operates in a stable temperature environment and guaranteeing product quality. Furthermore, in some embodiments, the expansion cavity 6 is located at the front of the grinding chamber, with a length of 1 / 4 of the total length of the grinding chamber. Its inner wall is flared in a rounded arc shape. This design allows the material to diffuse smoothly when entering the grinding chamber, reducing flow resistance and preventing local accumulation. Its end smoothly connects with the homogenization cavity 7, ensuring a uniform transition of material flow rate.

[0026] Meanwhile, the outer edge of the dispersion disk 15 is fitted with the inner wall of the expansion cavity 6 with a clearance, and it rotates synchronously with the main shaft 16, which can avoid jamming.

[0027] In addition, the expansion chamber 6 has a sand inlet 10 and a feed inlet 11 at its inlet end, with the feed inlet 11 located above the sand inlet 10. The sand inlet 10 is used to add grinding media, and the feed inlet 11 is used to input the material to be ground.

[0028] Furthermore, in some embodiments, the homogenizing cavity 7 is located in the middle of the grinding chamber, serving as the grinding area. Its structure is cylindrical, and its inlet end is connected to the outlet end of the expansion cavity 6. Its main function is to reduce the material flow rate.

[0029] The length of the homogenizing chamber 7 is set to half the length of the grinding chamber to ensure sufficient contact between the material and the grinding media for efficient grinding. To achieve this, a spiral guide plate 14 is installed inside the homogenizing chamber 7. This guide plate extends spirally along the axial direction of the homogenizing chamber 7 and has guide grooves on its surface. The design of the guide grooves further optimizes the flow path of the material, enhances the mixing effect between the grinding media and the material, and makes the shearing action more uniform.

[0030] After the material enters the homogenization chamber 7 from the expansion chamber 6, it spirals forward along the axial direction under the guidance of the spiral guide plate 14, thereby extending the residence time in the grinding zone and making the shearing and collision between the material and the grinding media more thorough, further improving the grinding efficiency and uniformity.

[0031] Specifically, the spiral guide plate 14 is slidably connected to the inner wall of the homogenization chamber 7 to ensure that it can rotate synchronously with the rotation of the main shaft 16, continuously push the material forward, and enhance the grinding effect. Furthermore, in some embodiments, the contraction chamber 8 serves as the discharge end, located at the end of the grinding chamber, and its function is to guide the material to be discharged smoothly. The length of the contraction chamber 8 is 1 / 4 of the total length of the grinding chamber, and its inner wall is a tapered shape, through which the ground material is discharged in an orderly manner via the grading plate 13.

[0032] In addition, a discharge port 12 is provided at the end of the shrinkage chamber 8. The discharge port 12 is used to discharge materials that meet the particle size requirements, while materials that do not meet the requirements are intercepted by the grading plate 13 and continue to be ground.

[0033] Specifically, the outer edge of the grading plate 13 slides against the inner wall of the shrinkage chamber 8 and maintains a dynamic seal, ensuring that the grading plate 13 can rotate smoothly and synchronously with the main shaft 16 while ensuring that the output material particle size can meet the set requirements.

[0034] Furthermore, in some embodiments, the grinder also includes a control cabinet 1, a drive motor 2, and a frame 9. Specifically, the control cabinet 1 is installed on one side of the frame 9. The control cabinet 1 is used to control the overall operating parameters of the grinder, including motor speed, feed rate, and discharge rate, as well as to monitor the material temperature and pressure in real time to ensure that the grinding process is carried out within a safe range.

[0035] It should be noted that the temperature inside the grinding chamber is monitored by temperature sensors. Specifically, temperature sensors can be installed at the connection between the expansion chamber 6 and the homogenization chamber 7, and at the connection between the homogenization chamber 7 and the contraction chamber 8, to monitor the temperature changes of the material in real time during the grinding process and prevent changes in material properties due to overheating caused by friction. Pressure sensors are then used to detect pressure. Specifically, pressure sensors are arranged near the feed inlet 11 and the discharge outlet 12 to monitor the pressure changes inside the grinding chamber in real time, ensuring that the system operates stably within a safe pressure range. When the pressure or temperature exceeds a preset threshold, the control cabinet 1 will immediately issue an alarm.

[0036] The drive motor 2 is fixed on the frame 9, and its output end is connected to the main shaft 16 to provide power to the main shaft 16, driving the dispersing disc 15, the spiral guide plate 14 and the classifying plate 13 to rotate synchronously, so as to realize the efficient shearing and classification of materials.

[0037] A support base 5 is provided at the bottom of the grinding chamber. The support base 5 is welded and fixed to the outer wall of the grinding chamber, providing stable support for the grinding chamber. At the same time, the support base 5 is slidably connected to the frame 9, which allows for flexible adjustment of the position of the grinding chamber and facilitates its installation. The discharge end of the grinding chamber is fixedly connected to the connecting seat 3 of the frame 9 through a flange to ensure the stability of the grinding chamber position. Furthermore, in some embodiments, a sludge collection tank 17 is provided at the bottom of the grinding chamber. The sludge collection tank 17 is placed in the groove of the frame 9 to facilitate the recovery of materials scattered during maintenance.

[0038] The specific operation process of this utility model is as follows: Preliminary preparation: Add grinding media into the grinding chamber through the sand filling port, and set the equipment operating parameters through control cabinet 1. Material grinding: Open the flow regulating valve on the feed pipe to transport the material through the feed port 11 to the expansion chamber 6 of the grinding chamber; after entering the expansion chamber 6, the material is initially dispersed under the rotational shearing action of the dispersion disc 15; then the material enters the homogenization chamber 7 and flows along the spiral trajectory under the guidance of the spiral guide plate 14, forcibly extending the flow path and fully shearing and colliding with the grinding media to achieve fine grinding; the ground material enters the contraction chamber 8 and is filtered by the grading plate 13, so that the material that meets the requirements is discharged from the discharge port 12.

[0039] While feeding, the drive motor 2 and the cooling pump are started. The drive motor 2 drives the main shaft 16 to rotate via the belt, which in turn drives the dispersing disc 15, the spiral guide plate 14 and the classifying plate 13 to rotate synchronously. The cooling pump drives the coolant to circulate in the annular cooling channel to cool the grinding chamber and ensure that the temperature inside the grinding chamber remains stable. Discharge and monitoring: The material is discharged through discharge port 12 and collected into the finished product storage tank; During the grinding process, control cabinet 1 collects monitoring data from temperature and pressure sensors in real time. When the temperature inside the grinding chamber exceeds the preset value, the flow rate of the cooling pump is increased to enhance cooling efficiency until the temperature drops to the preset value. When the pressure inside the grinding chamber exceeds the preset value, the feed flow rate is reduced, and a fault warning is issued to remind the operator to check for grinding media agglomeration or material blockage. Sewage discharge and maintenance: Grinding media debris and residual materials generated during the grinding process enter the sludge collection tank 17 through the sewage discharge port at the bottom of the grinding chamber.

[0040] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present 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 present invention.

Claims

1. A grinding mill for producing a terminator, characterized in that, include: The grinding chamber is divided into an expansion chamber (6), a homogenization chamber (7) and a contraction chamber (8) in sequence along the material flow direction. The three chambers are integrally formed. The main shaft (16) passes through the grinding chamber. The portion of the main shaft (16) located in the grinding chamber is provided with a dispersion disk (15), a spiral guide plate (14) and a grading plate (13) in sequence along the circumference. The dispersion disk (15) is located in the shrinkage chamber (8), the spiral guide plate (14) is located in the homogenization chamber (7), and the grading plate (13) is located in the shrinkage chamber (8). The outer wall of the grinding chamber is provided with an annular cooling channel and a cooling interface (4), and the cooling interface (4) is connected to the annular cooling channel.

2. The grinder for a terminator production according to claim 1, wherein The length of the expansion cavity (6) is 1 / 4 of the total length of the grinding chamber. The inner wall of the expansion cavity (6) has a funnel-shaped structure with a rounded transition. The outer edge of the dispersion disk (15) is in clearance fit with the inner wall of the expansion cavity (6). The expansion cavity (6) has a sand filling port (10) and a feed port (11) at its inlet end, with the feed port (11) located above the sand filling port (10).

3. The grinder for a terminator production according to claim 2, wherein The homogenizing cavity (7) is cylindrical, and its inlet end is connected to the outlet end of the expansion cavity (6). The length of the homogenizing cavity (7) is 1 / 2 of the length of the grinding chamber. The spiral guide plate (14) extends spirally along the axial direction of the homogenizing cavity (7), and its surface is provided with guide grooves. The spiral guide plate (14) is slidably connected to the inner wall of the homogeneous cavity (7).

4. The grinder for a terminator production according to claim 3, wherein The length of the shrinkage cavity (8) is 1 / 4 of the total length of the grinding chamber. The inner wall of the shrinkage cavity (8) has a tapered structure with a gradually narrowing shape. The outer edge of the grading plate (13) slides in conjunction with the inner wall of the shrinkage cavity (8). The end of the contraction chamber (8) is provided with a discharge port (12).

5. The grinder for a terminator production according to claim 1, wherein It also includes a control cabinet (1), a drive motor (2) and a frame (9). The control cabinet (1) is located on one side of the frame (9), and the drive motor (2) is fixed on the frame (9). Its output end is connected to the main shaft (16) for transmission. The bottom of the grinding chamber is provided with a support base (5), which is fixedly connected to the outer wall of the grinding chamber and slidably connected to the frame (9).

6. The grinder for a terminator production according to claim 5, wherein The grinding chamber is provided with a sludge collection tank (17) at its lower part, and the sludge collection tank (17) is connected to the frame (9).

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