A grinding device with variable frequency control feeding

Abstract

This utility model relates to a grinding device with variable frequency control feeding, including a chassis, a feeding assembly, and an abrasive assembly. A variable frequency motor is mounted on the chassis and connected to the feeding roller. The variable frequency motor is electrically connected to a PLC controller. By using a variable frequency motor controlled by the PLC controller to drive the feeding roller, the rotation speed of the feeding roller is dynamically adjusted according to the amount of abrasive entering, thereby matching the processing capacity of the subsequent grinding assembly, optimizing grinding efficiency, reducing unit energy consumption, and also reducing abnormal wear of the equipment caused by material impact or idling, extending the service life of the device and ensuring smooth production operation.

Description

Technical Field

[0001] This utility model relates to the field of grinding mill technology, and in particular to a grinding device with variable frequency control feeding. Background Technology

[0002] In existing grinding equipment, the feeding control usually uses a fixed-speed motor to drive the feeding roller, which is difficult to adjust according to the amount of material fed. This results in the feeding speed not matching the processing capacity of the subsequent grinding components. Overfeeding causes blockage of the grinding channel, while underfeeding causes the equipment to run idle, affecting the stability of product quality and accelerating the wear and tear of the equipment.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses a frequency conversion controlled feeding grinding device to solve the problems of mismatch between feeding speed and the processing capacity of subsequent grinding components, excessive feeding causing blockage of grinding channels, or insufficient feeding causing equipment to run idle, affecting product quality stability and accelerating device wear.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A grinding device with variable frequency controlled feeding, characterized in that it comprises:

[0007] The machine casing has a cavity inside, a feed inlet is opened at the top of the machine casing, and a discharge outlet is opened at the bottom of the machine casing; a PLC controller is installed on the machine casing.

[0008] A feeding assembly is located above the cavity. The feeding assembly includes a feeding roller, a guide member, and a variable frequency motor. The feeding roller is rotatably disposed in the cavity. One end of the guide member extends toward the feed inlet, and the other end extends toward the feeding roller. The abrasive is conveyed along the plane of the guide member to the roller surface of the feeding roller. The variable frequency motor is disposed on the chassis and connected to the feeding roller. The variable frequency motor is electrically connected to a PLC controller.

[0009] An abrasive assembly is located below the feeding assembly. The abrasive assembly includes an active abrasive roller and a passive abrasive roller. The two rollers are distributed opposite to each other and rotatably disposed in the cavity. A grinding channel is formed between the two rollers, and the grinding channel receives the abrasive conveyed by the feeding roller.

[0010] A further technical solution is that the upper end of the chassis is provided with a feeding bin, the inside of which is connected to the cavity, and the feeding port is opened at the upper end of the feeding bin.

[0011] A further technical solution is that the feeding hopper is equipped with three proximity switches, which are arranged at intervals along the height direction of the feeding hopper, and the three proximity switches are electrically connected to the PLC controller.

[0012] A further technical solution is that the abrasive assembly further includes a main drive motor and a first transmission belt. The main drive motor is located at the lower end of the housing, and the first transmission belt is sleeved between the output end of the main drive motor and one end of the active abrasive roller.

[0013] A further technical solution is that the abrasive assembly further includes a second transmission belt, a transmission wheel, a transmission gear, and an auxiliary wheel. The transmission wheel is located at the end of the active abrasive roller away from the first transmission belt. The transmission gear is located at the end of the passive abrasive roller away from the first transmission belt. The auxiliary wheel is rotatably mounted on the housing at the end away from the first transmission belt, and the auxiliary wheel is located on the outside of the transmission gear away from the transmission wheel. The second transmission belt is sleeved between the transmission wheel and the auxiliary wheel. The outer surface of the second transmission belt is provided with teeth that mesh with the transmission gear. When the transmission wheel drives the auxiliary wheel to rotate, the teeth of the second transmission belt drive the transmission gear to rotate.

[0014] A further technical solution is that the chassis is provided with a clutch mechanism, which includes a first clutch, a second clutch, a clutch rocker arm and a cylinder. The cylinder is located at the lower end of the abrasive assembly. One end of the clutch rocker arm is connected to the piston rod end of the cylinder. The first clutch is located at the end of the active abrasive roller, the second clutch is located at the end of the passive abrasive roller, and the other end of the clutch rocker arm is connected to the second clutch.

[0015] A further technical solution is that the cylinder is electrically connected to the PLC controller.

[0016] A further technical solution is that the chassis includes two cavities and a partition, the partition separating the interior of the chassis into two cavities, and each of the two cavities is provided with a feeding assembly and an abrasive assembly.

[0017] The beneficial effects of this utility model embodiment are as follows:

[0018] (i) A grinding device with variable frequency control feeding includes a chassis, a feeding assembly and a grinding assembly. The variable frequency motor is mounted on the chassis and connected to the feeding roller. The variable frequency motor is electrically connected to a PLC controller. By using the variable frequency motor controlled by the PLC controller to drive the feeding roller, the rotation speed of the feeding roller is dynamically adjusted according to the amount of abrasive entering, thereby matching the processing capacity of the subsequent grinding assembly, optimizing the grinding efficiency, reducing unit energy consumption, and also reducing abnormal wear of the equipment caused by material impact or idling, extending the service life of the device and ensuring smooth production operation.

[0019] (ii) Furthermore, the feed hopper is equipped with three proximity switches, which are arranged at intervals along the height direction of the feed hopper. The three proximity switches are electrically connected to the PLC controller. The three proximity switches, which are arranged at intervals along the height direction of the feed hopper, monitor the material level in real time. When the material accumulates and approaches the switches at different heights, a corresponding material level signal is generated and transmitted to the PLC controller. The PLC dynamically adjusts the speed of the variable frequency motor according to preset logic, such as high-level acceleration, low-level deceleration, and mid-level holding, thereby controlling the feeding speed of the feeding roller, realizing the functions of preventing material blockage and preventing dry running of the grinding device, and ultimately ensuring that the feeding speed matches the grinding capacity.

[0020] (III) Furthermore, the chassis is equipped with a clutch mechanism, which includes a first clutch, a second clutch, a clutch rocker arm, and a cylinder. The cylinder is located at the lower end of the abrasive assembly. One end of the clutch rocker arm is connected to the piston rod end of the cylinder. The first clutch is located at the end of the active abrasive roller, and the second clutch is located at the end of the passive abrasive roller. The other end of the clutch rocker arm is connected to the second clutch. The cylinder is electrically connected to a PLC controller. The clutch mechanism is controlled by the PLC to operate the cylinder, which pushes the clutch rocker arm through the piston rod, thereby acting on the second clutch connected to the passive abrasive roller. When the cylinder extends or retracts, it causes the passive abrasive roller to move closer to or further away from the active abrasive roller, thereby dynamically adjusting the gap pressure between the two abrasive rollers to adapt to the changing grinding pressure requirements of different abrasive characteristics or wear conditions, ensuring stable grinding results and protecting the equipment. Attached Figure Description

[0021] Figure 1 This is a front view of the internal structure of a grinding device with variable frequency control feeding according to the present invention.

[0022] Figure 2 This is a side view of a grinding device with variable frequency control feeding according to the present invention.

[0023] Figure 3 This is a top view of a grinding device with variable frequency control feeding according to the present invention.

[0024] In the picture:

[0025] 100. Chassis; 101. Cavity; 102. Partition; 103. Feed inlet; 104. Feed bin; 105. Discharge outlet; 200. Feeding assembly; 210. Feeding roller; 220. Guide component; 230. Variable frequency motor; 300. Abrasive assembly; 310. Active abrasive roller; 320. Passive abrasive roller; 330. Main drive motor; 340. First transmission belt; 360. Transmission wheel; 370. Transmission gear; 380. Auxiliary wheel; 400. Proximity switch; 500. Clutch mechanism; 510. First clutch; 520. Second clutch; 530. Clutch rocker arm; 540. Cylinder; 600. PLC controller. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0027] First embodiment:

[0028] A grinding device with variable frequency control feeding includes a housing 100, a feeding assembly 200 and a grinding assembly 300.

[0029] like Figures 1-3 As shown, the chassis 100 has a cavity 101. Further, the chassis 100 includes two cavities 101 and a partition 102. The partition 102 separates the interior of the chassis 100 into two cavities 101. Each of the two cavities 101 is equipped with a feeding assembly 200 and an abrasive assembly 300. Specifically, the input ends of the feeding assembly and the abrasive assembly in the two cavities 101 are arranged in opposite directions. A feed inlet 103 is provided at the upper end of the chassis 100, and a discharge outlet 105 is provided at the bottom end. A PLC controller 600 is provided on the chassis 100. For example, a feed chamber 104 is provided at the upper end of the chassis 100, and the feed chamber 104 is internally connected to the cavity 101. The feed inlet 103 is located at the upper end of the feed chamber 104.

[0030] like Figures 1-3 As shown, the feeding assembly 200 is located above the cavity 101. The feeding assembly 200 includes a feeding roller 210, a guide member 220, and a variable frequency motor 230. The feeding roller 210 is rotatably disposed in the cavity 101. One end of the guide member 220 extends toward the feed inlet 103, and the other end extends toward the feeding roller 210. The abrasive is conveyed along the plane of the guide member 220 to the roller surface of the feeding roller 210. The variable frequency motor 230 is disposed on the chassis 100 and connected to the feeding roller 210. The variable frequency motor 230 is electrically connected to the PLC controller 600.

[0031] like Figures 1-3As shown, the abrasive assembly 300 is located below the feeding assembly 200. The abrasive assembly 300 includes an active abrasive roller 310 and a passive abrasive roller 320. The two rollers are rotatably disposed opposite each other within the cavity 101, forming grinding channels between them. The grinding channels receive abrasive material conveyed by the feeding roller 210. For example, the abrasive assembly 300 also includes a main drive motor 330 and a first transmission belt 340. The main drive motor 330 is located at the lower end of the housing 100, and the first transmission belt 340 is sleeved between the output end of the main drive motor 330 and one end of the active abrasive roller 310. Furthermore, the abrasive assembly 300 also includes a second transmission belt 350, a transmission wheel 360, a transmission gear 370, and an auxiliary wheel 380. The transmission wheel 360 is located at the other end of the active abrasive roller 310 away from the first transmission belt 340. The transmission gear 370 is located at the end of the passive abrasive roller 320 away from the first transmission belt 340. The auxiliary wheel 380 is rotatably mounted on the housing 100 at the end away from the first transmission belt 340, and the auxiliary wheel 380 is located on the outside of the transmission gear 370 away from the transmission wheel 360. The second transmission belt 350 is sleeved between the transmission wheel 360 and the auxiliary wheel 380. The outer surface of the second transmission belt 350 is provided with teeth that mesh with the transmission gear 370. When the transmission wheel 360 drives the auxiliary wheel 380 to rotate, the teeth of the second transmission belt 350 drive the transmission gear 370 to rotate.

[0032] like Figures 1-3 As shown, the feed hopper 104 is further equipped with three proximity switches 400, which are arranged at intervals along the height direction of the feed hopper 104. The three proximity switches 400 are electrically connected to the PLC controller 600. The three proximity switches 400, which are arranged at intervals along the height direction of the feed hopper 104, monitor the material level in real time. When the material accumulates and approaches the switches at different heights, a corresponding material level signal is generated and transmitted to the PLC controller 600. According to preset logic, such as high-level acceleration, low-level deceleration, and mid-level holding, the speed of the variable frequency motor 230 is dynamically adjusted, thereby controlling the feeding speed of the feeding roller 210. This realizes the functions of preventing material blockage and preventing dry running of the grinding device, and ultimately ensures that the feeding speed matches the grinding capacity.

[0033] like Figures 1-3As shown, the chassis 100 is further provided with a clutch mechanism 500, which includes a first clutch 510, a second clutch 520, a clutch rocker arm 530, and a cylinder 540. The cylinder 540 is located at the lower end of the abrasive assembly 300. One end of the clutch rocker arm 530 is connected to the piston rod end of the cylinder 540. The first clutch 510 is located at the end of the driving abrasive roller 310, and the second clutch 520 is located at the end of the driven abrasive roller 320. The other end of the clutch rocker arm 530 is connected to the second clutch 520. The cylinder 540 is electrically connected to the PLC controller 600. The clutch mechanism 500 is controlled by the PLC controller 600 to operate the cylinder 540, which pushes the clutch rocker arm 530 through the piston rod, thereby acting on the second clutch 520 connected to the passive abrasive roller 320. When the cylinder 540 extends or retracts, it drives the passive abrasive roller 320 to move closer to or further away from the active abrasive roller 310, thereby dynamically adjusting the gap pressure between the two abrasive rollers to adapt to the changing grinding pressure requirements of different abrasive characteristics or wear conditions, ensuring stable grinding effect and protecting the equipment.

[0034] In operation, this embodiment is as follows:

[0035] The abrasive first enters the feed hopper 104. When the abrasive accumulates to the height of the three proximity switches 400 spaced along the height direction within the feed hopper 104, the proximity switches 400 transmit the material level signal to the PLC controller 600 in real time. Based on a preset program and the current material level (e.g., high-level trigger acceleration, low-level trigger deceleration, and mid-level speed maintenance), the PLC controller dynamically adjusts the output speed of the variable frequency motor 230, thereby controlling the rotation speed of the feed roller 210. The material is evenly conveyed to the surface of the feed roller 210 via the guide 220, and then conveyed downwards by the feed roller 210 to the grinding channel of the abrasive assembly 300 at a rate adapted to the grinding requirements. The main drive motor 330 is then started. The active abrasive roller 310 is driven to rotate via the first transmission belt 340. The transmission wheel 360 at the end of the active abrasive roller 310 drives the auxiliary wheel 380 to rotate via the second transmission belt 350. This causes the teeth on the surface of the second transmission belt 350 to mesh with the transmission gear 370 of the passive abrasive roller 320, thereby synchronously driving the passive abrasive roller 320 to rotate in the opposite direction, thus achieving grinding of the material. During the grinding process, the PLC controller 600 controls the cylinder 540 to push the clutch rocker arm 530, and adjusts the gap pressure between the passive abrasive roller 320 and the active abrasive roller 310 through the second clutch 520 to adapt to the material characteristics for grinding. The ground powder is discharged from the discharge port 105.

[0036] In this embodiment, by using a variable frequency motor 230 controlled by a PLC controller 600 to drive the feeding roller 210, the rotation speed of the feeding roller 210 is dynamically adjusted according to the amount of abrasive entering, thereby matching the processing capacity of the subsequent grinding components, optimizing grinding efficiency, reducing unit energy consumption, and also reducing abnormal wear of equipment caused by material impact or idling, extending the service life of the device and ensuring smooth production operation.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A variable frequency controlled feed milling device, characterized by, include: The machine casing (100) has a cavity (101) inside. The upper end of the machine casing (100) is provided with a feed inlet (103), and the bottom end of the machine casing (100) is provided with a discharge outlet (105). The machine casing (100) is equipped with a PLC controller. A feeding assembly (200) is located above the cavity (101). The feeding assembly (200) includes a feeding roller (210), a guide (220), and a variable frequency motor (230). The feeding roller (210) is rotatably disposed in the cavity (101). One end of the guide (220) extends toward the feed inlet (103), and the other end extends toward the feeding roller (210). The abrasive is conveyed along the plane of the guide (220) to the roller surface of the feeding roller (210). The variable frequency motor (230) is disposed on the chassis (100) and connected to the feeding roller (210). The variable frequency motor (230) is electrically connected to the PLC controller (600). The abrasive assembly (300) is located below the feeding assembly (200). The abrasive assembly (300) includes an active abrasive roller (310) and a passive abrasive roller (320). The two rollers are distributed opposite to each other and rotatably disposed in the cavity (101). A grinding channel is formed between the two rollers, and the grinding channel receives the abrasive conveyed by the feeding roller (210).

2. The variable frequency controlled feed milling device of claim 1, wherein: The upper end of the chassis (100) is provided with a feeding bin (104), the inside of the feeding bin (104) is connected to the cavity (101), and the feeding port (103) is opened at the upper end of the feeding bin (104).

3. The variable frequency controlled feed milling device of claim 2, wherein: The feed hopper (104) is provided with three proximity switches (400), which are arranged at intervals along the height direction of the feed hopper (104) and are electrically connected to the PLC controller (600).

4. The grinding device with variable frequency controlled feeding according to claim 1, characterized in that: The abrasive assembly (300) also includes a main drive motor (330) and a first transmission belt (340). The main drive motor (330) is located at the lower end of the housing (100), and the first transmission belt (340) is sleeved between the output end of the main drive motor (330) and one end of the active abrasive roller (310).

5. The grinding device with variable frequency controlled feeding according to claim 4, characterized in that: The abrasive assembly (300) further includes a second drive belt (350), a drive pulley (360), a drive gear (370), and an auxiliary pulley (380). The drive pulley (360) is located at the other end of the active abrasive roller (310) away from the first drive belt (340). The drive gear (370) is located at the other end of the passive abrasive roller (320) away from the first drive belt (340). The auxiliary pulley (380) is rotatably mounted on the housing (100) away from the first drive belt (350). 40) one end, and the auxiliary wheel (380) is located on the outside of the transmission gear (370) away from the transmission wheel (360), the second transmission belt (350) is sleeved between the transmission wheel (360) and the auxiliary wheel (380), the outer surface of the second transmission belt (350) is provided with teeth that mesh with the transmission gear (370), when the transmission wheel (360) drives the auxiliary wheel (380) to rotate, the teeth of the second transmission belt (350) drive the transmission gear (370) to rotate.

6. The grinding device with variable frequency controlled feeding according to claim 1, characterized in that: The chassis (100) is provided with a clutch mechanism (500), which includes a first clutch (510), a second clutch (520), a clutch rocker arm (530) and a cylinder (540). The cylinder (540) is located at the lower end of the abrasive assembly (300). One end of the clutch rocker arm (530) is connected to the piston rod end of the cylinder (540). The first clutch (510) is located at the end of the active abrasive roller (310), and the second clutch (520) is located at the end of the passive abrasive roller (320). The other end of the clutch rocker arm (530) is connected to the second clutch (520).

7. The grinding device with variable frequency controlled feeding according to claim 6, characterized in that: The cylinder (540) is electrically connected to the PLC controller (600).

8. The grinding device with variable frequency controlled feeding according to claim 1, characterized in that: The chassis (100) includes two cavities (101) and a partition (102). The partition (102) separates the interior of the chassis (100) into two cavities (101). Each of the two cavities (101) is provided with a feeding assembly (200) and an abrasive assembly (300).

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