A grinding and pulverizing device for the production of ester raw materials

Abstract

This utility model discloses a pulverizing and grinding device for the production of ester raw materials, including a main support unit, a ball mill at the top of the main support unit, a secondary pulverizing device on one side of the main support unit, a material collection unit at the top feed end of the secondary pulverizing device, and the discharge end of the ball mill above the material collection unit, allowing the discharge from the ball mill to enter the material collection unit. Air nozzles and air outlets are provided on both side walls of the secondary pulverizing device, and sealed conveying units are provided at both the top feed end and the bottom discharge end of the secondary pulverizing device. This utility model addresses the problems of localized temperature rise in existing grinding equipment leading to thermal decomposition of ester raw materials and insufficient grinding precision. It employs multi-stage pulverization, coarsely pulverizing followed by ultrafine grinding, reducing the energy consumption of a single device. Furthermore, a low-temperature medium is introduced during the fine grinding process for cryogenic pulverization or low-temperature grinding, inhibiting the thermal degradation of esters, thus meeting the high standards required in the food, pharmaceutical, and other fields.

Description

Technical Field

[0001] This utility model relates to a crushing and grinding equipment for the production of ester raw materials, belonging to the technical field of ester production equipment. Background Technology

[0002] Emulsifiers are substances that enable a mixture of two or more immiscible components to form a stable emulsion. Ester emulsifiers are widely used in daily life, especially in the food and pharmaceutical industries. In the production of ester raw materials, the selection of crushing and grinding equipment directly affects the particle size, purity, and subsequent reaction efficiency of the raw materials.

[0003] The characteristics and challenges of pulverizing ester raw materials lie in the fact that most ester compounds have low melting points, requiring careful handling to avoid localized overheating. Existing conventional pulverizing and grinding equipment is insufficient for the production requirements of ester emulsifier raw materials. For example, existing mechanical impact grinding equipment can experience localized temperature rises of 80-120°C, leading to thermal decomposition of the ester raw materials. Traditional cooling methods (water-cooled jackets) also have low cooling efficiency. Therefore, the grinding of ester emulsifier raw materials requires selecting appropriate equipment based on their physical properties, with a focus on temperature control. Consequently, we propose a pulverizing and grinding equipment for ester raw material production to meet the high standards required in the food and pharmaceutical industries. Utility Model Content

[0004] The purpose of this invention is to provide a pulverizing and grinding device for the production of ester raw materials, which solves the problems of local temperature rise in existing grinding equipment leading to thermal decomposition of ester raw materials and insufficient grinding precision. It adopts multi-stage pulverization, coarse pulverization followed by ultrafine pulverization, reducing the energy consumption of a single device, and introducing low-temperature media such as liquid nitrogen during fine grinding to perform cryogenic pulverization or low-temperature grinding, inhibiting the thermal degradation of esters, in order to meet the high standard requirements of food, pharmaceutical and other fields.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a crushing and grinding equipment for the production of ester raw materials, comprising a main support, a ball mill at the top of the main support for coarse crushing, a secondary crushing equipment on one side of the main support, a material collection section at the top feed end of the secondary crushing equipment, and the discharge end of the ball mill above the material collection section, allowing the discharge of the ball mill to enter the material collection section. Air nozzles and air outlets are provided on both side walls of the secondary crushing equipment. The air nozzles are connected to a cooling medium storage chamber, and the air outlets are connected to a cooling medium collection chamber. Cooling media, such as low-temperature compressed air or liquid nitrogen, can be selected between the cooling medium storage chamber, air nozzles, air outlets, and cooling medium collection chamber according to the requirements of the grinding raw materials. The cooling medium collection chamber and the cooling medium storage chamber can be connected through a circulation system to allow for the recycling of the cooling medium. Sealed conveying sections are provided at both the top feed end and the bottom discharge end of the secondary crushing equipment. These sealed conveying sections can control the material conveying speed and ensure the airtightness of the secondary crushing equipment, preventing excessive leakage of the cooling medium.

[0006] The aforementioned pulverizing and grinding equipment for the production of ester raw materials includes a secondary pulverizing device comprising a shell, an internal screen, and a rotor disc inside the screen. Hammers are distributed along the outer edge of the rotor disc. The top feed end of the secondary pulverizing device extends downwards and connects to the screen. Material enters the screen through the feed inlet. The rotor disc drives the hammers to rotate, generating centrifugal force that propels the material outwards. The material is struck by the hammers, flies towards the screen, collides, and falls back onto the screen. It is repeatedly impacted, squeezed, and rubbed between the screen and the hammers, gradually being pulverized. When the particle size is smaller than the screen aperture diameter, it is discharged from the screen and exits through the discharge end.

[0007] The aforementioned crushing and grinding equipment for the production of ester raw materials has stator teeth evenly distributed on the inner wall of the screen. The inclination direction of the inwardly extending tips of the stator teeth is opposite to the rotation direction of the rotor disc. The stator teeth further increase the impact force and shear force on the material, thereby improving the crushing effect.

[0008] The aforementioned crushing and grinding equipment for the production of ester raw materials has both the air nozzle and the air outlet installed on the housing. The air nozzle is located on one side of the housing and can blow vertically downward airflow into the screen. The air outlet is located on the other side of the housing, so that a circulating airflow is formed inside the screen, which controls the temperature and improves the circulation and flow of the internal materials.

[0009] The aforementioned crushing and grinding equipment for the production of ester raw materials has an air outlet located at the inner end of the housing and equipped with a filter screen to prevent the crushed material from entering the air outlet.

[0010] The aforementioned crushing and grinding equipment for the production of ester raw materials includes a hammer blade comprising a connecting part, one end of which is connected to a rotor disc, and the other end of which extends outward to form a hammer head. The hammer head is trapezoidal in shape, wider on the outside and narrower on the inside, so that the end of the hammer head has a sharp point where it impacts the material, thereby increasing the crushing effect.

[0011] The aforementioned crushing and grinding equipment for the production of ester raw materials uses stainless steel forgings for the rotor disc and connecting parts, and high-chromium cast iron or tungsten carbide for the hammer head, thereby reducing costs and increasing the service life of the hammer head.

[0012] The aforementioned crushing and grinding equipment for producing ester raw materials includes a sealed conveying section comprising a sleeve with arc-shaped grooves on both sides. A cylindrical rotating part is disposed within the inner cavity of the sleeve, positioned between the arc-shaped grooves. The contact surfaces of the rotating part and the sleeve are tightly fitted. A material trough is uniformly formed on the arc-shaped surface of the rotating part. The rotating part is connected to a drive motor, which controls the rotation of the rotating part. Material first enters the upper material trough. As the rotating part rotates, the material trough gradually turns downwards, allowing the material to fall into the discharge trough under its own weight. During material conveying, the sealing of the upper and lower sides of the sealed conveying section is maintained.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] (1) This utility model adopts multi-stage crushing, which combines ball milling and ultra-fine crushing equipment to achieve coarse crushing and ultra-fine refining, thereby reducing the energy consumption of a single equipment.

[0015] (2) The two-stage crushing equipment of this utility model uses high speed and high energy collision to crush materials. It has a simple structure and strong adaptability. At the same time, it cools down by spraying cooling air medium and grinds in a low temperature airflow environment, inhibiting the thermal degradation of esters, retaining the activity of raw materials, and making the particle size more uniform. It is suitable for the production of heat-sensitive esters.

[0016] (3) While maintaining the physicochemical properties of ester raw materials, this utility model achieves a synergistic improvement in pulverization efficiency, safety and economy, providing reliable equipment support for the manufacturing of high-end ester materials. It can break through the traditional technical bottlenecks and achieve efficient, safe and low-cost emulsifier preparation, meeting the high-standard requirements of food, medicine and other fields. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the two-stage pulverizing equipment of this utility model;

[0019] Figure 3This is a schematic diagram of the hammer structure of this utility model;

[0020] Figure 4 yes Figure 2 Enlarged view of a portion of point A in the middle;

[0021] Figure 5 This is a schematic diagram of the sealing and conveying part of this utility model.

[0022] Reference numerals: 1-Main support, 2-Ball mill equipment, 3-Secondary crushing equipment, 4-Material collection section, 5-Air nozzle, 6-Air outlet, 7-Cooling medium storage chamber, 8-Cooling medium collection chamber, 9-Sealed conveying section, 10-Shell, 11-Screen, 12-Rotor disc, 13-Hammer blade, 14-Connecting part, 15-Hammer head, 16-Sleeve, 17-Arc-shaped groove, 18-Rotating part, 19-Material trough, 20-Stator teeth.

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0024] Embodiment 1 of this utility model: A pulverizing and grinding device for the production of ester raw materials, comprising a main support 1, a ball mill 2 disposed at the top of the main support 1 for coarse pulverization, a secondary pulverizing device 3 disposed on one side of the main support 1, a material collection section 4 disposed at the top feed end of the secondary pulverizing device 3, the discharge end of the ball mill 2 being positioned above the material collection section 4 and the discharge of the ball mill 2 being able to enter the material collection section 4, and air nozzles 5 and air outlets 6 disposed on both side walls of the secondary pulverizing device 3, the air nozzles 5 being connected to a cooling medium storage device. The air outlet 6 is connected to the cooling medium collection chamber 8. The cooling medium storage chamber 7, the air nozzle 5, the air outlet 6 and the cooling medium collection chamber 8 can be connected by a cooling medium selected according to the needs of the grinding raw materials, such as low temperature compressed air, liquid nitrogen, etc. The cooling medium collection chamber 8 and the cooling medium storage chamber 7 can be connected by a circulation system to allow the cooling medium to be recycled. The top feed end and the bottom discharge end of the secondary crushing equipment 3 are both equipped with sealed conveying parts 9. The sealed conveying parts 9 can control the material conveying speed and ensure the airtightness of the internal structure of the secondary crushing equipment 3 to prevent a large amount of cooling medium from overflowing.

[0025] Embodiment 2 of this utility model: A pulverizing and grinding device for the production of ester raw materials, comprising a main support 1, a ball mill 2 disposed at the top of the main support 1 for coarse pulverization, a secondary pulverizing device 3 disposed on one side of the main support 1, a material collection section 4 disposed at the top feed end of the secondary pulverizing device 3, the discharge end of the ball mill 2 being positioned above the material collection section 4 and the discharge of the ball mill 2 being able to enter the material collection section 4, and air nozzles 5 and air outlets 6 disposed on both side walls of the secondary pulverizing device 3, the air nozzles 5 being connected to a cooling medium storage device. The air outlet 6 is connected to the cooling medium collection chamber 8. The cooling medium storage chamber 7, the air nozzle 5, the air outlet 6 and the cooling medium collection chamber 8 can be connected by a cooling medium selected according to the needs of the grinding raw materials, such as low temperature compressed air, liquid nitrogen, etc. The cooling medium collection chamber 8 and the cooling medium storage chamber 7 can be connected by a circulation system to allow the cooling medium to be recycled. The top feed end and the bottom discharge end of the secondary crushing equipment 3 are both equipped with sealed conveying parts 9. The sealed conveying parts 9 can control the material conveying speed and ensure the airtightness of the internal structure of the secondary crushing equipment 3 to prevent a large amount of cooling medium from overflowing.

[0026] The secondary crushing device 3 includes a housing 10, inside which a screen 11 is installed. Inside the screen 11, a rotor disc 12 is installed, with hammers 13 distributed along the outer edge of the rotor disc 12. The top feed end of the secondary crushing device 3 extends downwards and connects to the screen 11. Material enters the screen 11 through the feed inlet. The rotor disc 12 drives the hammers 13 to rotate, generating centrifugal force that propels the material outwards. Impacted by the hammers 13, the material flies towards the screen 11, collides, and falls back. It is repeatedly impacted, squeezed, and rubbed between the screen 11 and the hammers 13, gradually being crushed. When the particle size is smaller than the screen aperture diameter of the screen 11, it is discharged from the screen 11 and discharged through the discharge end. Stator teeth 20 are evenly distributed on the inner wall of the screen 11. The inclination direction of the inwardly extending tips of the stator teeth 20 is opposite to the rotation direction of the rotor disk 12. The stator teeth 20 further increase the impact force and shear force on the material, thereby improving the crushing effect. The air nozzle 5 and the air outlet 6 are both provided on the housing 10. The air nozzle 5 is located on one side of the housing 10 and can blow vertically downward airflow into the screen 11. The air outlet 6 is located on the other side of the housing 10, so that a circulating airflow is formed in the screen 11, which controls the temperature and improves the circulation flow of the internal material. The air outlet 6 is provided with a filter screen at the inner end of the housing 10 to prevent the crushed material from entering the air outlet 6.

[0027] Embodiment 3 of this utility model: A pulverizing and grinding device for the production of ester raw materials, comprising a main support 1, a ball mill 2 disposed at the top of the main support 1 for coarse pulverization, a secondary pulverizing device 3 disposed on one side of the main support 1, a material collection section 4 disposed at the top feed end of the secondary pulverizing device 3, the discharge end of the ball mill 2 being positioned above the material collection section 4 and the discharge of the ball mill 2 being able to enter the material collection section 4, and air nozzles 5 and air outlets 6 disposed on both side walls of the secondary pulverizing device 3, the air nozzles 5 being connected to a cooling medium storage device. The air outlet 6 is connected to the cooling medium collection chamber 8. The cooling medium storage chamber 7, the air nozzle 5, the air outlet 6 and the cooling medium collection chamber 8 can be connected by a cooling medium selected according to the needs of the grinding raw materials, such as low temperature compressed air, liquid nitrogen, etc. The cooling medium collection chamber 8 and the cooling medium storage chamber 7 can be connected by a circulation system to allow the cooling medium to be recycled. The top feed end and the bottom discharge end of the secondary crushing equipment 3 are both equipped with sealed conveying parts 9. The sealed conveying parts 9 can control the material conveying speed and ensure the airtightness of the internal structure of the secondary crushing equipment 3 to prevent a large amount of cooling medium from overflowing.

[0028] The secondary crushing device 3 includes a housing 10, inside which a screen 11 is installed. Inside the screen 11, a rotor disc 12 is installed, with hammers 13 distributed along the outer edge of the rotor disc 12. The top feed end of the secondary crushing device 3 extends downwards and connects to the screen 11. Material enters the screen 11 through the feed inlet. The rotor disc 12 drives the hammers 13 to rotate, generating centrifugal force that propels the material outwards. Impacted by the hammers 13, the material flies towards the screen 11, collides, and falls back. It is repeatedly impacted, squeezed, and rubbed between the screen 11 and the hammers 13, gradually being crushed. When the particle size is smaller than the screen aperture diameter of the screen 11, it is discharged from the screen 11 and discharged through the discharge end. Stator teeth 20 are evenly distributed on the inner wall of the screen 11. The inclination direction of the inwardly extending tips of the stator teeth 20 is opposite to the rotation direction of the rotor disk 12. The stator teeth 20 further increase the impact force and shear force on the material, thereby improving the crushing effect. The air nozzle 5 and the air outlet 6 are both provided on the housing 10. The air nozzle 5 is located on one side of the housing 10 and can blow vertically downward airflow into the screen 11. The air outlet 6 is located on the other side of the housing 10, so that a circulating airflow is formed in the screen 11, which controls the temperature and improves the circulation flow of the internal material. The air outlet 6 is provided with a filter screen at the inner end of the housing 10 to prevent the crushed material from entering the air outlet 6.

[0029] The hammer blade 13 includes a connecting part 14, one end of which is connected to the rotor disk 12, and the other end of which extends outward to form a hammer head 15. The hammer head 15 is trapezoidal with a wider outer side and a narrower inner side, so that the end of the hammer head 15 has a sharp point where it impacts the material, thereby increasing the crushing effect. The rotor disk 12 and the connecting part 14 are made of stainless steel forgings, and the hammer head 15 is made of high-chromium cast iron or tungsten carbide material, which reduces costs and increases the service life of the hammer head 15.

[0030] Embodiment 4 of this utility model: A pulverizing and grinding device for the production of ester raw materials, comprising a main support 1, a ball mill 2 disposed at the top of the main support 1 for coarse pulverization, a secondary pulverizing device 3 disposed on one side of the main support 1, a material collection section 4 disposed at the top feed end of the secondary pulverizing device 3, the discharge end of the ball mill 2 being positioned above the material collection section 4 and the discharge of the ball mill 2 being able to enter the material collection section 4, and air nozzles 5 and air outlets 6 disposed on both side walls of the secondary pulverizing device 3, the air nozzles 5 being connected to a cooling medium storage device. The air outlet 6 is connected to the cooling medium collection chamber 8. The cooling medium storage chamber 7, the air nozzle 5, the air outlet 6 and the cooling medium collection chamber 8 can be connected by a cooling medium selected according to the needs of the grinding raw materials, such as low temperature compressed air, liquid nitrogen, etc. The cooling medium collection chamber 8 and the cooling medium storage chamber 7 can be connected by a circulation system to allow the cooling medium to be recycled. The top feed end and the bottom discharge end of the secondary crushing equipment 3 are both equipped with sealed conveying parts 9. The sealed conveying parts 9 can control the material conveying speed and ensure the airtightness of the internal structure of the secondary crushing equipment 3 to prevent a large amount of cooling medium from overflowing.

[0031] The secondary crushing device 3 includes a housing 10, inside which a screen 11 is installed. A rotor disk 12 is installed inside the screen 11, and the rotor disk 12 is connected to an external drive motor. Hammers 13 are distributed along the outer edge of the rotor disk 12. The top feed end of the secondary crushing device 3 extends downwards and connects to the screen 11. Material enters the screen 11 through the feed inlet. As the rotor disk 12 drives the hammers 13 to rotate, centrifugal force is generated, causing the material to move outwards. Impacted by the hammers 13, the material flies towards the screen 11, collides, and falls back onto the screen 11. It is repeatedly impacted, squeezed, and rubbed between the screen 11 and the hammers 13, gradually being crushed. When the particle size is smaller than the diameter of the screen holes in the screen 11, it is discharged from the screen 11 and passes through the outlet. The material is discharged from the end; stator teeth 20 are evenly distributed on the inner wall of the screen 11. The inclination direction of the tip of the stator teeth 20 extending inward is opposite to the rotation direction of the rotor disk 12. The stator teeth 20 further increase the impact force and shear force on the material, improving the crushing effect; the air nozzle 5 and the air outlet 6 are both provided on the housing 10. The air nozzle 5 is located on one side of the housing 10 and can blow vertically downward airflow into the screen 11. The air outlet 6 is located on the other side of the housing 10, so that a circulating airflow is formed in the screen 11, which controls the temperature and improves the circulation flow of the internal material. The air outlet 6 is provided with a filter screen at the inner end of the housing 10 to prevent the crushed material from entering the air outlet 6.

[0032] The hammer blade 13 includes a connecting part 14, one end of which is connected to the rotor disk 12, and the other end of which extends outward to form a hammer head 15. The hammer head 15 is trapezoidal with a wider outer side and a narrower inner side, so that the end of the hammer head 15 has a sharp point where it impacts the material, thereby increasing the crushing effect. The rotor disk 12 and the connecting part 14 are made of stainless steel forgings, and the hammer head 15 is made of high-chromium cast iron or tungsten carbide material, which reduces costs and increases the service life of the hammer head 15.

[0033] The sealed conveying part 9 includes a sleeve 16, with arc-shaped grooves 17 on both the left and right sides. A cylindrical rotating part 18 is provided in the inner cavity of the sleeve 16, and the rotating part 18 is placed between the arc-shaped grooves 17. The contact surfaces of the rotating part 18 and the sleeve 16 are tightly fitted. A material trough 19 is evenly provided on the arc-shaped surface of the rotating part 18. The rotating part 18 is connected to a drive motor. By controlling the drive motor, the rotation of the rotating part 18 can be controlled. The material first enters the upper material trough 19. As the rotating part 18 rotates, the material trough 19 gradually turns downward, allowing the material to fall into the discharge trough 19 by its own gravity. During the material conveying process, the sealing of the upper and lower sides of the sealed conveying part 9 can be maintained.

[0034] The working principle of one embodiment of this utility model is as follows: During use, the ester raw material to be processed is placed in the ball mill 2 for preliminary crushing. The crushing degree is low, and it does not generate a lot of heat or high energy consumption. The raw material after preliminary grinding is conveyed to the material collection section 4. The sealed conveying section 9 at the top feed end of the secondary crushing equipment 3 is started, and the material is gradually fed into the shell 10 of the secondary crushing equipment 3. The raw material enters the screen 11 through the feed inlet. The rotor disk 12 drives the hammers 13 to rotate, generating centrifugal force to move the material outward. It is struck by the hammers 13 and flies towards the screen 11 and stator teeth 20, colliding and falling back between the screen 11 and the hammers 13. The raw material is repeatedly impacted. Impact, compression, shearing, and friction gradually pulverize the material. When the particle size is smaller than the diameter of the screen mesh 11, it is discharged from the screen mesh 11 and discharged through the sealed conveying part 9 at the discharge end until all grinding is completed. At the same time, the cooling medium storage chamber 7 can select the cooling medium according to the needs of the grinding raw material, such as low temperature compressed air, liquid nitrogen, etc. The cooling medium collection chamber 8 and the cooling medium storage chamber 7 can be connected through a circulation system, so that the cooling medium in the cooling medium storage chamber 7, the air nozzle 5, the air outlet 6, and the cooling medium collection chamber 8 can be recycled. The sealed conveying part 9 can control the material conveying speed and ensure the airtightness of the secondary crushing equipment 3 to prevent a large amount of cooling medium from overflowing.

Claims

1. A pulverizing and grinding device for the production of ester raw materials, characterized in that, The device includes a main support unit (1), a ball mill (2) is provided at the top of the main support unit (1), a secondary crushing unit (3) is provided on one side of the main support unit (1), a material collection unit (4) is provided at the top feed end of the secondary crushing unit (3), the discharge end of the ball mill (2) is located above the material collection unit (4) and the discharge of the ball mill (2) can be input into the material collection unit (4), air spray nozzles (5) and air outlets (6) are provided on both side walls of the secondary crushing unit (3), the air spray nozzles (5) are connected to a cooling medium storage chamber (7), the air outlets (6) are connected to a cooling medium collection chamber (8), and a sealed conveying unit (9) is provided at both the top feed end and the bottom discharge end of the secondary crushing unit (3).

2. A pulverizing and grinding apparatus for producing an ester raw material according to claim 1, characterized by The secondary crushing device (3) includes a shell (10), a screen (11) is provided inside the shell (10), a rotor disk (12) is provided inside the screen (11), and hammers (13) are distributed along the outer edge of the rotor disk (12). The top feed end of the secondary crushing device (3) extends downward and is connected to and communicates with the screen (11).

3. A pulverizing and grinding apparatus for producing an ester raw material according to claim 2, characterized by The inner wall of the screen (11) is evenly distributed with stator teeth (20), and the inclination direction of the tip of the stator teeth (20) extending inward is opposite to the rotation direction of the rotor disk (12).

4. A pulverizing and grinding apparatus for producing an ester raw material according to claim 3, characterized by The air nozzle (5) and the air outlet (6) are both located on the housing (10). The air nozzle (5) is located on one side of the housing (10) and can blow vertically downward airflow into the screen (11). The air outlet (6) is located on the other side of the housing (10).

5. A pulverizing and grinding apparatus for producing an ester raw material according to claim 4, characterized by The air outlet (6) is located at the inner end of the housing (10) and is equipped with a filter screen.

6. A pulverizing and grinding device for the production of ester raw materials according to claim 3, characterized in that, The hammer blade (13) includes a connecting part (14), one end of which is connected to the rotor disk (12), and the other end of which extends outward to provide a hammer head (15), which is trapezoidal with a wider outer side and a narrower inner side.

7. A pulverizing and grinding device for producing ester raw materials according to claim 6, characterized in that, The rotor disc (12) and the connecting part (14) are made of stainless steel forgings, and the hammer head (15) is made of high chromium cast iron or tungsten carbide.

8. A pulverizing and grinding device for the production of ester raw materials according to claim 1 or 3, characterized in that, The sealing conveying part (9) includes a sleeve (16), and arc-shaped grooves (17) are provided on the left and right sides of the sleeve (16). The inner cavity of the sleeve (16) is provided with a cylindrical rotating part (18), and the rotating part (18) is placed between the arc-shaped grooves (17). The contact surfaces of the rotating part (18) and the sleeve (16) are tightly fitted. The arc-shaped surface of the rotating part (18) is uniformly provided with a material groove (19).

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