Energy-saving pulverizer for polyethylene powder full-cooling production chain

Abstract

The invention relates to the technical field of flour mills, and discloses an energy-saving flour mill for a polyethylene powder full-cooling production chain, which comprises a mounting frame, a mounting box mounted on the side part of the mounting frame, a feeding hole formed in the end part of the mounting frame, a flour milling box arranged in the mounting frame, a driving assembly arranged in the mounting box, and a flour milling assembly arranged in the flour milling box, the driving assembly is used in cooperation with the grinding assembly, and through the arrangement of the driving assembly, the driving assembly is matched with the grinding assembly. A first servo motor is started, the first servo motor drives a rotating shaft and a rotating roller on the outer side of the rotating shaft to rotate, a guide groove in the side portion of the rotating roller is clamped in a sliding mode to drive a guide button and a sliding rod at the bottom of the guide button to do reciprocating motion, and therefore a movable grinding disc and a grinding block on the side portion of the grinding disc are pushed to do reciprocating grinding through reciprocating motion of the sliding rod. The reciprocating motion ensures that the material is stressed more uniformly in the grinding process, and local excessive wear or non-uniform grinding caused by single-direction grinding is avoided.

Description

Technical Field

[0001] This invention relates to the field of grinding mill technology, specifically to an energy-saving grinding mill for a fully cooled polyethylene powder production chain. Background Technology

[0002] A polyethylene powder mill is a device specifically designed to grind polyethylene (PE) granules or lumps into fine powder. Polyethylene is a common plastic widely used in packaging, building materials, electronics, and other fields. In many applications, polyethylene exists in powder form, particularly in plasticizers, coatings, composite materials, and 3D printing. The polyethylene granules or lumps are prepared in a specific ratio. The polyethylene material is then pulverized through mechanical grinding, impact, shearing, or other methods. Grinding mills typically use metal blades, grinding discs, and other auxiliary components to aid in the grinding process. During grinding, the heat generated by friction can affect the powder quality; many modern grinding mills are equipped with cooling systems to reduce powder temperature and maintain its performance. The ground polyethylene powder is then sorted by sieving or air classifying and collected in designated containers.

[0003] Currently, existing grinding mills typically use blades to grind polyethylene powder. This blade grinding process generates high-intensity friction and impact, leading to rapid wear of grinding components such as blades and grinding discs. Frequent replacement of worn blades and grinding discs not only increases maintenance costs but can also lead to decreased production efficiency. Therefore, this method does not meet current requirements. To address this, we propose an energy-saving grinding mill for the fully cooled polyethylene powder production chain. Summary of the Invention

[0004] This invention provides an energy-saving grinding mill for a fully cooled polyethylene powder production chain. It avoids the excessive wear or uneven grinding caused by unidirectional grinding, and solves the problem mentioned in the background art where existing grinding mills typically use blades for polyethylene powder grinding. Blade grinding generates high-intensity friction and impact, leading to rapid wear of grinding components such as blades and grinding discs. Frequent replacement of worn blades and grinding discs not only increases maintenance costs but may also reduce production efficiency.

[0005] The present invention provides the following technical solution: an energy-saving grinding mill for a fully cooled polyethylene powder production chain, comprising a mounting frame, a mounting box mounted on the side of the mounting frame, a feed inlet mounted on the end of the mounting frame, a grinding box disposed inside the mounting frame, a drive assembly disposed inside the mounting box, and a grinding assembly disposed inside the grinding box, wherein the drive assembly and the grinding assembly are used in conjunction.

[0006] As an optional solution for an energy-saving grinding mill for a fully cooled polyethylene powder production chain according to the present invention, wherein: a first servo motor is installed on the side of the mounting box, the output shaft of the first servo motor passes through the side of the mounting box, a mounting cavity is opened inside the mounting box, a base is installed inside the mounting cavity, a support frame is connected to the end of the base, and the drive assembly is located on the side of the support frame.

[0007] As an optional solution for an energy-saving grinding mill for a fully cooled polyethylene powder production chain according to the present invention, the drive assembly includes a rotating shaft and a rotating roller. Two support frames are provided, with the rotating shaft inserted between the two support frames. The rotating roller is sleeved on the outside of the rotating shaft, and a rotating disk is sleeved on the outside of the rotating shaft. The output shaft of the first servo motor is keyed to the center of the rotating disk.

[0008] As an optional solution for an energy-saving grinding mill used in a fully cooled polyethylene powder production chain according to the present invention, wherein: a guide groove is provided on the side of the rotating roller, a guide button is slidably engaged inside the guide groove, a first engaging ring is connected to the end of the base, a second engaging ring is connected to the bottom of the guide button, a support rod is connected between the first engaging ring and the second engaging ring, and a sliding rod is also connected between the first engaging ring and the second engaging ring.

[0009] As an optional solution for an energy-saving grinding mill used in a fully cooled polyethylene powder production chain according to the present invention, wherein: a connecting hole is provided on the side of the support frame, the sliding rod passes through the interior of the connecting hole, the sliding rod also passes through the interior of the grinding box, and the sliding rod extends into the interior of the grinding box.

[0010] As an optional solution for an energy-saving grinding mill for a fully cooled polyethylene powder production chain according to the present invention, the grinding assembly includes a first grinding disc and a second grinding disc. A first locking block is connected to the side of the first grinding disc, and a second locking block is connected to the side of the second grinding disc. A first locking groove and a second locking groove are provided on the inner wall of the grinding box. The first locking block is slidably engaged in the inside of the first locking groove, and the second locking block is slidably engaged in the inside of the second locking groove.

[0011] As an optional solution for an energy-saving grinding mill for a fully cooled polyethylene powder production chain according to the present invention, wherein: the rotating shaft also passes through the interior of the grinding box, and the rotating shaft extends inside the grinding box, the rotating shaft passes through the middle of the first grinding disc and the second grinding disc, and the rotating shaft is fixedly connected to the middle of the first grinding disc and the second grinding disc.

[0012] As an optional solution for an energy-saving grinding mill used in a fully cooled polyethylene powder production chain according to the present invention, wherein: a movable grinding disc is slidably sleeved on the outer side of the rotating shaft, and a sliding rod is connected to the side of the movable grinding disc.

[0013] As an optional solution for an energy-saving grinding mill used in a fully cooled polyethylene powder production chain according to the present invention, wherein: the first grinding disc, the second grinding disc, and the movable grinding disc are connected to the sides of a plurality of grinding blocks, and the plurality of grinding blocks are connected to the sides of a plurality of grinding balls.

[0014] As an optional solution for an energy-saving grinding mill used in a fully cooled polyethylene powder production chain according to the present invention, the grinding box has a discharge port at the bottom, an installation cylinder is connected to the bottom of the discharge port, a filter plate is connected inside the installation cylinder, a threaded section is provided at the bottom of the installation cylinder, a threaded cap is threadedly connected to the bottom of the installation cylinder, a cooling box is connected to the end of the grinding box, a second servo motor is connected to the side of the cooling box, a cooling fan is connected inside the cooling box, and the second servo motor is keyed to the cooling fan.

[0015] The present invention has the following beneficial effects:

[0016] 1. This energy-saving grinding mill for a fully cooled polyethylene powder production chain utilizes a drive assembly that works in conjunction with the grinding assembly. The drive assembly activates a first servo motor, which drives a rotating shaft and an outer rotating roller. The guide groove on the side of the rotating roller engages with a guide button, and the sliding rod at the bottom of the guide button reciprocates. This reciprocating motion drives a moving grinding disc and the grinding blocks on its side to grind the material. This reciprocating motion ensures more uniform force distribution during grinding, avoiding localized excessive wear or uneven grinding caused by unidirectional grinding. This helps improve product uniformity and consistency, solving the problem of existing grinding mills that typically use blade grinding for polyethylene powder. Blade grinding generates high-intensity friction and impact, leading to rapid wear of blades and grinding discs. Frequent replacement of worn blades and grinding discs not only increases maintenance costs but can also reduce production efficiency.

[0017] 2. This energy-saving grinding mill for the fully cooled polyethylene powder production chain utilizes grinding balls. These grinding balls, located on the sides of the grinding blocks, grind the powder during reciprocating motion, providing an additional grinding mechanism. During their movement, the grinding balls collide with the grinding material at high speeds, and the energy generated by these collisions allows the powder particles to be refined more quickly. Compared to traditional grinding blocks, the spherical grinding media can make more uniform contact with the material, effectively improving grinding efficiency.

[0018] 3. This energy-saving grinding mill for the fully cooled polyethylene powder production chain utilizes a first and second grinding disc. The first grinding disc works in conjunction with a rotating shaft, which, while rotating, drives both the first and second grinding discs to rotate. Simultaneously, the moving grinding discs reciprocate, with the side grinding stones engaging with the grinding stones on the sides of both discs to grind the powder. The rotating shaft drives the two grinding discs to rotate, increasing the complexity of the grinding process. The reciprocating motion of the moving grinding discs further enhances the uniformity of the grinding process, ensuring that each powder particle is thoroughly ground. This avoids the problems of excessive localized wear or uneven grinding caused by unidirectional grinding, resulting in a better overall solution. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0021] Figure 3 This is a schematic diagram of the rotating roller structure of the present invention.

[0022] Figure 4 For the present invention Figure 2 A magnified structural diagram at point A.

[0023] Figure 5 This is a schematic diagram of the first grinding disc structure of the present invention.

[0024] Figure 6 This is a schematic diagram of the grinding block structure of the present invention.

[0025] Figure 7 This is a partial structural diagram of the grinding component of the present invention.

[0026] In the diagram: 110, mounting bracket; 111, mounting box; 112, feed inlet; 113, grinding box; 114, first servo motor; 115, mounting cavity; 120, base; 121, support frame; 130, drive assembly; 131, rotating shaft; 132, rotating roller; 133, rotating disk; 134, guide groove; 135, guide button; 140, first engaging ring; 141, second engaging ring; 142, support rod; 143, sliding rod; 14 4. Connecting hole; 151. First locking block; 152. Second locking block; 153. First locking slot; 154. Second locking slot; 160. Grinding assembly; 161. First grinding disc; 162. Second grinding disc; 163. Moving grinding disc; 164. Grinding block; 165. Grinding ball; 170. Discharge port; 171. Mounting cylinder; 172. Filter plate; 173. Threaded cover; 174. Cooling box; 175. Second servo motor; 180. Cooling fan. Detailed Implementation

[0027] 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.

[0028] Example 1 aims to address the problem that existing grinding mills typically use blades to grind polyethylene powder. This blade grinding process generates high-intensity friction and impact, leading to rapid wear of grinding components such as blades and grinding discs. Frequent replacement of worn blades and grinding discs not only increases maintenance costs but may also reduce production efficiency. Please refer to [link to relevant documentation]. Figure 1-6 An energy-saving grinding mill for a fully cooled polyethylene powder production chain includes a mounting frame 110, a mounting box 111 mounted on the side of the mounting frame 110, a feed inlet 112 mounted on the end of the mounting frame 110, a grinding box 113 disposed inside the mounting frame 110, a drive assembly 130 disposed inside the mounting box 111, and a grinding assembly 160 disposed inside the grinding box 113. The drive assembly 130 and the grinding assembly 160 are used in conjunction.

[0029] A first servo motor 114 is mounted on the side of the mounting box 111. The output shaft of the first servo motor 114 passes through the side of the mounting box 111. A mounting cavity 115 is opened inside the mounting box 111. A base 120 is installed inside the mounting cavity 115. A support frame 121 is connected to the end of the base 120. A drive assembly 130 is located on the side of the support frame 121. The drive assembly 130 includes a rotating shaft 131 and a rotating roller 132. There are two support frames 121. The rotating shaft 131 passes between the two support frames 121. The rotating roller 132 is sleeved on the outside of the rotating shaft 131. A rotating disk 133 is sleeved on the outside of the rotating shaft 131. The output shaft of the first servo motor 114 is keyed to the center of the rotating disk 133. The design of the two support frames 121 provides a stable mechanical support, ensuring that the rotating shaft 131 can not only effectively bear the load of the rotating roller 132, but also maintain good balance under high-speed rotation. The base 120 is connected to the mounting cavity 115, providing the foundation for the entire system and enhancing the overall stability and shock resistance of the device. The high-precision control of the first servo motor 114 allows for fine adjustment of the speed of the rotating roller 132, thereby adapting to the grinding requirements of different materials and improving the uniformity and efficiency of grinding.

[0030] A guide groove 134 is provided on the side of the rotating roller 132. A guide button 135 is slidably engaged inside the guide groove 134. A first engaging ring 140 is connected to the end of the base 120. A second engaging ring 141 is connected to the bottom of the guide button 135. A support rod 142 is connected between the first engaging ring 140 and the second engaging ring 141. A sliding rod 143 is also connected between the first engaging ring 140 and the second engaging ring 141. A connecting hole 144 is provided on the side of the support frame 121. The sliding rod 143 passes through the connecting hole 144 and also passes through the interior of the grinding box 113. The sliding rod 143 extends into the interior of the grinding box 113. Through the connecting hole 144 on the side of the support frame 121 and the connection with the interior of the grinding box 113, the entire system forms a stable mechanical structure. This design enhances the mechanical stability and shock resistance of the equipment, ensuring that the mechanical structure remains stable during high-speed grinding and will not shift or be damaged due to vibration. The insertion of the rotating shaft 131 further enhances the support of the moving grinding disc 163.

[0031] In this embodiment: Drive component 130, in conjunction with grinding component 160, activates first servo motor 114. First servo motor 114 drives rotating shaft 131 and rotating roller 132 on the outer side of rotating shaft 131. Guide groove 134 on the side of rotating roller 132 slides and engages, driving guide button 135 and sliding rod 143 at the bottom of guide button 135 to reciprocate. This drives moving grinding disc 163 and grinding blocks 164 on the side of grinding disc to reciprocate, through the reciprocating motion of sliding rod 143. This reciprocating motion ensures more uniform force on the material during grinding, avoiding localized excessive wear or uneven grinding caused by grinding in one direction. This helps improve the uniformity and consistency of the product, solving the problem that existing grinding mills generally use blade grinding for polyethylene powder. Blade grinding generates high-intensity friction and impact, leading to rapid wear of grinding components such as blades and grinding discs. Frequent replacement of worn blades and grinding discs not only increases maintenance costs but may also lead to decreased production efficiency.

[0032] Example 2 aims to address the problem of insufficient grinding. This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figure 1-6The first grinding disc 161, the second grinding disc 162, and the movable grinding disc 163 are connected to the sides of several grinding blocks 164, and several grinding balls 165 are connected to the sides of the grinding blocks 164. A discharge port 170 is provided at the bottom of the grinding chamber 113, and an installation cylinder 171 is connected to the bottom of the discharge port 170. A filter plate 172 is connected inside the installation cylinder 171. A threaded section is provided at the bottom of the installation cylinder 171, and a threaded cap 173 is threadedly connected to the bottom of the installation cylinder 171. A cooling chamber 174 is connected to the end of the grinding chamber 113. A second servo motor 175 is connected to the side of the cooling chamber 174, and a cooling fan 180 is connected inside the cooling chamber 174. The second servo motor 175 and the cooling fan 180 are keyed together. The grinding chamber 113 and the cooling chamber 174 are in communication, and the cooling fan 180 cools the powder.

[0033] The grinding blocks 164 and grinding balls 165 are designed to be of varying sizes. Larger grinding blocks and balls can provide a larger contact area and stronger pressure, enhancing the crushing effect on hard materials. Smaller grinding blocks and balls can better handle the further grinding of fine particles, ensuring optimal results for both coarse and fine grinding.

[0034] In this embodiment, the grinding balls 165, located on the side of the grinding block 164, grind the powder while reciprocating. The use of the grinding balls 165 provides an additional grinding mechanism. During movement, the grinding balls 165 collide with the grinding material at a high speed, and the energy generated by this collision allows the powder particles to be refined more quickly. Compared to a traditional grinding block 164, the spherical grinding body can contact the material more evenly, effectively improving grinding efficiency.

[0035] Example 3 aims to address the issue of inconsistent grinding methods. This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figure 1-6 The grinding assembly 160 includes a first grinding disc 161 and a second grinding disc 162. A first locking block 151 is connected to the side of the first grinding disc 161, and a second locking block 152 is connected to the side of the second grinding disc 162. A first locking groove 153 and a second locking groove 154 are provided on the inner wall of the grinding box 113. The first locking block 151 is slidably engaged in the inside of the first locking groove 153, and the second locking block 152 is slidably engaged in the inside of the second locking groove 154. The rotating shaft 131 also passes through the inside of the grinding box 113 and extends inside the grinding box 113. The rotating shaft 131 passes through the middle of the first grinding disc 161 and the second grinding disc 162, and the rotating shaft 131 is fixedly connected to the middle of the first grinding disc 161 and the second grinding disc 162.

[0036] This configuration ensures the stability and reliability of the grinding discs. Through the precise cooperation of the second locking block 152, the second locking slot 154, the first locking block 151, and the first locking slot 153, the first grinding disc 161 and the second grinding disc 162 can remain stable during rotation, avoiding shaking or displacement, thereby improving grinding efficiency and powder quality.

[0037] In this embodiment, the arrangement of a first grinding disc 161 and a second grinding disc 162, with the first grinding disc 161 cooperating with a rotating shaft 131, causes the first and second grinding discs 161 and 162 to rotate simultaneously as the rotating shaft 131 rotates. At the same time, a movable grinding disc 163 reciprocates, with the side grinding stones cooperating with the grinding stones on the sides of the first and second grinding discs 161 and 162 to grind the powder. The rotating shaft 131 drives the two grinding discs to rotate, increasing the complexity of the grinding process. The reciprocating motion of the movable grinding disc 163 further enhances the uniformity of the grinding process, ensuring that each powder particle is fully ground, avoiding the problem of excessive local wear or uneven grinding caused by grinding in one direction, thus improving the overall solution.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply 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.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An energy-saving grinding mill for a fully cooled polyethylene powder production chain, comprising a mounting frame (110), characterized in that: The mounting frame (110) has a mounting box (111) installed on its side, and a feed inlet (112) installed at the end of the mounting frame (110). A grinding box (113) is provided inside the mounting frame (110), a drive assembly (130) is provided inside the mounting box (111), and a grinding assembly (160) is provided inside the grinding box (113). The drive assembly (130) and the grinding assembly (160) are used together.

2. The energy-saving grinding mill for a fully cooled polyethylene powder production chain according to claim 1, characterized in that: A first servo motor (114) is installed on the side of the mounting box (111). The output shaft of the first servo motor (114) passes through the side of the mounting box (111). A mounting cavity (115) is opened inside the mounting box (111). A base (120) is installed inside the mounting cavity (115). A support frame (121) is connected to the end of the base (120). The drive assembly (130) is located on the side of the support frame (121).

3. The energy-saving grinding mill for a fully cooled polyethylene powder production chain according to claim 2, characterized in that: The drive assembly (130) includes a rotating shaft (131) and a rotating roller (132). Two support frames (121) are provided. The rotating shaft (131) is inserted between the two support frames (121). The rotating roller (132) is sleeved on the outside of the rotating shaft (131). A rotating disk (133) is sleeved on the outside of the rotating shaft (131). The output shaft of the first servo motor (114) is keyed to the center of the rotating disk (133).

4. The energy-saving grinding mill for a fully cooled polyethylene powder production chain according to claim 3, characterized in that: The rotating roller (132) has a guide groove (134) on its side. A guide button (135) is slidably engaged inside the guide groove (134). A first engaging ring (140) is connected to the end of the base (120). A second engaging ring (141) is connected to the bottom of the guide button (135). A support rod (142) is connected between the first engaging ring (140) and the second engaging ring (141). A sliding rod (143) is also connected between the first engaging ring (140) and the second engaging ring (141).

5. The energy-saving grinding mill for a fully cooled polyethylene powder production chain according to claim 4, characterized in that: The support frame (121) has a connecting hole (144) on its side. The sliding rod (143) passes through the interior of the connecting hole (144) and also passes through the interior of the grinding box (113). The sliding rod (143) extends into the interior of the grinding box (113).

6. The energy-saving grinding mill for a fully cooled polyethylene powder production chain according to claim 3, characterized in that: The grinding assembly (160) includes a first grinding disc (161) and a second grinding disc (162). A first locking block (151) is connected to the side of the first grinding disc (161), and a second locking block (152) is connected to the side of the second grinding disc (162). A first locking groove (153) and a second locking groove (154) are provided on the inner wall of the grinding box (113). The first locking block (151) is slidably engaged in the inside of the first locking groove (153), and the second locking block (152) is slidably engaged in the inside of the second locking groove (154).

7. An energy-saving grinding mill for a fully cooled polyethylene powder production chain according to claim 6, characterized in that: The rotating shaft (131) also passes through the interior of the grinding box (113), and the rotating shaft (131) extends inside the grinding box (113). The rotating shaft (131) passes through the middle of the first grinding disc (161) and the second grinding disc (162), and the rotating shaft (131) is fixedly connected to the middle of the first grinding disc (161) and the second grinding disc (162).

8. An energy-saving grinding mill for a fully cooled polyethylene powder production chain according to claim 7, characterized in that: A movable grinding disc (163) is slidably sleeved on the outside of the rotating shaft (131), and the sliding rod (143) is connected to the side of the movable grinding disc (163).

9. An energy-saving grinding mill for a fully cooled polyethylene powder production chain according to claim 4, characterized in that: The first grinding disc (161), the second grinding disc (162) and the movable grinding disc (163) are connected to a plurality of grinding blocks (164) on their sides, and the plurality of grinding blocks (164) are connected to a plurality of grinding balls (165) on their sides.

10. An energy-saving grinding mill for a fully cooled polyethylene powder production chain according to claim 1, characterized in that: The grinding chamber (113) has a discharge port (170) at the bottom, and an installation cylinder (171) is connected to the bottom of the discharge port (170). A filter plate (172) is connected inside the installation cylinder (171). A threaded section is provided at the bottom of the installation cylinder (171). A threaded cap (173) is threadedly connected to the bottom of the installation cylinder (171). A cooling box (174) is connected to the end of the grinding chamber (113). A second servo motor (175) is connected to the side of the cooling box (174). A cooling fan (180) is connected inside the cooling box (174). The second servo motor (175) is keyed to the cooling fan (180).

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