Drying device for dry ball mill

Abstract

The utility model provides a drying device for a dry-method ball mill, which relates to the field of ball mills and comprises a hopper provided with a feeding mechanism for feeding materials into a ball milling tank; the feeding mechanism comprises a feeding pipeline, the first end of the feeding pipeline is communicated with the hopper, and a feeding auger is arranged in the feeding pipeline; the drying mechanism comprises a drying pipeline, the first end of the drying pipeline communicates with the second end of the feeding pipeline, the second end of the drying pipeline communicates with the hopper, a drying auger is arranged in the drying pipeline, and a heating unit is arranged outside the drying pipeline. By arranging the hopper, the feeding mechanism and the drying mechanism, the powder is circularly heated, the water content in the powder meets the preset requirement, circulation among the feeding mechanism, the drying mechanism and the hopper is utilized, the occupied space is greatly saved, the powder is continuously turned over in the drying process, and the powder can be fully dried.

Description

Technical Field

[0001] The utility model relates to the field of ball mills, in particular to a drying device for a dry ball mill. Background Art

[0002] A ball mill is a commonly used grinding machine. During secondary grinding of powders, the water content in the powder must be below a certain percentage to prevent adhesion between the powder and the grinding media (usually steel balls) during the milling process, which could affect the particle size distribution of the powder.

[0003] Before entering the ball mill, the powder is usually dried using a separate drying equipment. Currently, the main drying equipment for powders includes fluidized bed dryers, box dryers, and tunnel dryers. Among them, the box dryer has a simple structure and low cost and is widely used. However, the box dryer dries unevenly and takes a long time to dry. Although the tunnel dryer makes up for the uneven drying problem of the box dryer to a certain extent, the tunnel dryer occupies a large area and takes a long time to dry.

[0004] Based on various problems of existing drying equipment, this application proposes a drying device for a dry ball mill to solve the problems of existing drying equipment occupying a large space and having poor drying effect. Utility Model Content

[0005] The utility model provides a drying device for a dry ball mill, which aims to solve the problems of large space occupation and poor drying effect of existing drying equipment.

[0006] In order to achieve the above-mentioned object, an embodiment of the present utility model provides a drying device for a dry ball mill, comprising:

[0007] A hopper is provided with a feeding mechanism for feeding materials into the ball mill;

[0008] The feeding mechanism comprises a feeding pipe, a first end of the feeding pipe is connected to the hopper, and a feeding auger is provided in the feeding pipe;

[0009] The drying mechanism includes a drying pipe, a first end of the drying pipe is connected to the second end of the feed pipe, the second end of the drying pipe is connected to the hopper, a drying auger is provided in the drying pipe, and a heating unit is provided outside the drying pipe.

[0010] Preferably, the drying device for the dry ball mill further comprises a frame, the hopper is arranged below the frame, and the hopper is located on one side of the frame;

[0011] There are multiple drying pipes, and some of the drying pipes are arranged horizontally along the vertical direction of the frame. The first end of the drying pipe located at the top is connected to the feed pipe, the second end of the drying pipe located at the bottom is connected to the hopper, and the remaining drying pipes are connected in sequence from head to tail through transition pipes.

[0012] Preferably, the drying device for the dry ball mill further comprises a guide pipe, the guide pipe is communicated with the second end of the feed pipe, the feed pipe is arranged along the radial direction of the guide pipe, the guide pipe is also communicated with the uppermost drying pipe, and a guide auger is provided in the guide pipe;

[0013] The drying device for the dry ball mill further includes an overflow pipe, a first end of which is communicated with the guide pipe, and a second end of which is communicated with the hopper.

[0014] Preferably, the guide pipe is arranged above the frame, and the guide pipe and the hopper are located on both sides of the frame respectively.

[0015] Preferably, the heating unit is a heating belt, and the heating belt is wound around the drying pipe.

[0016] Preferably, a base frame is provided at the bottom end of the frame, the base frame is tilted, and the hopper is located on the lower side of the base frame.

[0017] Preferably, the drying device for the dry ball mill further comprises a driving mechanism, the driving mechanism being arranged on the frame, the driving mechanism comprising a driving source, the output end of the driving source being connected to a dual-output reducer, the first output end of the dual-output reducer being provided with a first transmission assembly, the first output end of the dual-output reducer driving the feeding auger to rotate through the first transmission assembly; the second output end of the dual-output reducer being provided with a second transmission assembly, the second output end of the dual-output reducer driving the drying auger to rotate through the second transmission assembly;

[0018] The guide auger is also provided with a third transmission assembly, and the third transmission assembly is in transmission connection with the second transmission assembly.

[0019] Preferably, the first transmission assembly includes a first bevel gear, a second bevel gear, a first universal joint, and a first worm gear unit. The first bevel gear is arranged at the first output end of the dual-output reducer, the second bevel gear is engaged with the first bevel gear for transmission, the worm of the first worm gear unit and the rotating shaft of the second bevel gear are transmitted through the first universal joint, and the worm gear of the first worm gear unit is arranged on the rotating shaft of the feed auger.

[0020] Preferably, a transmission box is provided on the side of the frame, the driving source and the dual-output reducer are provided on the transmission box, the second end of the dual-output reducer is passed through the top wall of the transmission box, the second transmission assembly includes a second universal joint and a second worm gear unit, one end of the second universal joint is fixedly connected to the second output end of the dual-output reducer, and the other end is fixedly connected to the worm of the second worm gear unit, the worm of the second worm gear unit is rotatably provided on the bottom wall of the transmission box, and the worm wheel of the second worm gear unit is provided on the rotating shaft of any one of the drying auger;

[0021] Any two adjacent drying augers are driven by sprockets.

[0022] Preferably, the third transmission assembly includes a third bevel gear, a fourth bevel gear, and a transition transmission shaft. The third bevel gear is arranged on the rotating shaft of the drying auger. The fourth bevel gear is meshed with the third bevel gear for transmission. A sprocket transmission is performed between the rotating shaft of the fourth bevel gear and the transition transmission shaft. The transition transmission shaft is connected to the rotating shaft of the guide auger for transmission.

[0023] The above solution of the utility model has the following beneficial effects:

[0024] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments.

[0025] In the present application, the powder is circulated and heated by setting a hopper, a feeding mechanism and a drying mechanism so that the water content in the powder reaches the preset requirements. The present application utilizes circulation between the feeding mechanism, the drying mechanism and the hopper, which greatly saves the occupied space, and the powder is constantly turned over during the drying process, which can fully dry the powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a first perspective view of the present invention;

[0027] Figure 2 It is a schematic diagram of the locations of the feed pipe, drying pipe and overflow pipe;

[0028] Figure 3 This is the second viewing angle of this application (part of the transmission case is hidden);

[0029] Figure 4 yes Figure 3 Enlarged view of part A;

[0030] Figure 5 This is a third-view diagram of the present application (part of the transmission case is hidden);

[0031] Figure 6 yes Figure 5 Magnified view of part B.

[0032] [Description of Reference Numerals]

[0033] 100-hopper,

[0034] 200-feeding mechanism, 210-feeding pipe, 220-transition pipe,

[0035] 300-drying mechanism, 310-drying pipe, 320-heating unit,

[0036] 400-rack, 410-base,

[0037] 510-Guide pipeline,

[0038] 610- Overflow pipe,

[0039] 700-driving mechanism, 710-driving source, 720-dual output reducer, 730-first transmission assembly, 731-first bevel gear, 732-second bevel gear, 733-first universal joint, 734-first worm gear unit,

[0040] 740-second transmission assembly, 741-second universal joint, 742-second worm gear unit,

[0041] 750-third transmission assembly, 751-third bevel gear, 752-fourth bevel gear, 753-transition transmission shaft, 800-transmission box. DETAILED DESCRIPTION

[0042] In order to make the technical problems to be solved, technical solutions and advantages of the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0043] like Figure 1-6 As shown, an embodiment of the present invention provides a drying device for a dry ball mill, comprising a hopper 100, a feeding mechanism 200, and a drying mechanism 300, wherein the hopper 100 is used to store powder. The feeding mechanism 200 comprises a feeding pipe 210, the first end of which is connected to the hopper 100, and a feeding auger is provided in the feeding pipe 210. The auger has a spiral blade and a rotating shaft passing through the blade, and bearings are provided at both ends of the rotating shaft, and the outer ring of the bearing is fixedly connected to the feeding pipe. The drying mechanism 300 comprises a drying pipe 310, the first end of which is connected to the second end of the feeding pipe 210, and the second end of the drying pipe 310 is connected to the hopper 100, a drying auger is provided in the drying pipe 310, and a heating unit 320 is provided outside the drying pipe 310. The hopper 100 is also connected to a feeding mechanism.

[0044] In this application, powder is added to hopper 100. Under the action of the feed auger, the powder flows along feed pipe 210 into drying pipe 310. After being heated by heating unit 320, it returns to hopper 100 to complete a cycle. After a preset number of cycles or time, the feed auger is turned off, and a feeding mechanism feeds the dried powder in hopper 100 into the ball mill. The feeding mechanism uses existing technology. The number of cycles and time are determined by the moisture content of the powder and the grinding requirements.

[0045] In the present application, a circulation system is formed by using a hopper 100, a feeding mechanism 200 and a drying mechanism 300, so that the powder is continuously circulated in the circulation system. On the one hand, it saves space and avoids a large floor area. On the other hand, the powder is constantly turned during the circulation, which can speed up the drying speed and improve the uniformity of the drying.

[0046] Furthermore, the drying device for the dry ball mill further includes a frame 400 , and the hopper 100 is disposed below the frame 400 , and the hopper 100 is located on one side of the frame 400 . In some embodiments of the present application, a plurality of drying ducts 310 are provided, and the plurality of drying ducts 310 are arranged along the vertical direction of the rack 400, and the axial arrangement of the plurality of drying ducts 310 is transversely arranged. The first end of the drying duct 310 located at the top is connected to the feed duct 210, and the second end of the drying duct 310 located at the bottom is connected to the hopper 100. A transition duct 220 is provided on the drying duct 310 located between the top and bottom drying ducts 310, and the transition duct 220 is provided at the end of the upper layer of drying duct 310, and the starting end of the lower layer of drying duct 310 is located at the lower end of the transition duct 220, so that an S-shaped transport path is formed between the plurality of drying ducts 310 and the transition duct 220. A heating unit 320 is provided on each drying duct 310. On the S-shaped movement path, the heating unit 320 can fully heat and dry the powder, thereby improving the drying efficiency.

[0047] The drying device for the dry ball mill further includes a guide duct 510 having a first end and a second end. The first end of the guide duct 510 communicates with the second section of the feed duct 210, and the feed duct 210 is perpendicular to the axial direction of the feed duct 210. The guide duct 510 also communicates with the uppermost drying duct 310 via the transition duct 220. A guide auger is disposed within the guide duct 510.

[0048] The drying device for the dry ball mill includes an overflow pipe 610. The first end of the overflow pipe 610 is connected to the second end of the guide pipe 510, and the second end of the overflow pipe 610 is connected to the hopper 100. In the present application, the overflow pipe 610 is used to relieve the pressure of the drying pipe 310. When the drying pipe 310 is overloaded, the powder enters the overflow pipe 610 from the guide pipe 510 to prevent the drying pipe 310 from being blocked.

[0049] In this application, the guide pipe 510 is arranged above the frame 400, and the hopper 100 and the guide pipe 510 are respectively located on both sides of the frame 400, ensuring that the feeding pipe 210 is in an inclined posture, which can effectively prevent the feeding auger from slipping when transporting the powder.

[0050] Preferably, the heating unit 320 is a heating belt, which is wound around the outer surface of the drying duct 310 .

[0051] A base frame 410 is provided at the bottom end of the frame 400 . The base frame 410 is tilted, and the hopper 100 is located at the lower end of the base frame 410 . The powder is gathered in the hopper 100 under the action of its own gravity, which helps the feeding auger to transport the powder.

[0052] In order to drive the feeding auger, the drying auger and the guiding auger, the drying device for the dry ball mill further comprises a driving mechanism 700 and a transmission box 800. Figure 3-6 ,exist Figure 3-6 In the figure, one side of the transmission box 800 is hidden to facilitate the display of the internal structure of the transmission box 800. The transmission box 800 is arranged at the top of the frame 400 and close to the side of the guide pipe 510. A driving source 710 is arranged on the transmission box 800. The driving source 710 provides power. In this application, the driving source 710 is a motor. The output end of the driving source 710 is connected to the dual-output reducer 720. The dual-output reducer 720 has an input end and two output ends, the two output ends are respectively a first output end and a second output end, wherein the first output end is provided with a first transmission assembly 730, the first transmission assembly 730 is connected to the feeding auger, and the dual-output reducer 720 drives the feeding auger to rotate through the first transmission assembly 730, and the second output end is provided with a second transmission assembly 740, the second transmission assembly 740 is connected to the drying auger, and the dual-output reducer 720 drives the drying auger to rotate through the second transmission assembly 740.

[0053] A third transmission assembly 750 is further provided on the guide auger. The third transmission assembly 750 is in transmission connection with the second transmission assembly 740 . Driven by the second transmission assembly 740 and the third transmission assembly 750 , the guide auger rotates.

[0054] In the present application, the first transmission assembly 730 includes a first bevel gear 731, a second bevel gear 732, a first universal joint 733, and a first worm gear unit 734, wherein the first bevel gear 731 is disposed at the first output end of the dual-output reducer 720, the second bevel gear 732 is meshed with the first bevel gear 731 for transmission, the rotating shaft of the second bevel gear 732 is fixedly connected to the first universal joint 733, the other end of the first universal joint 733 is fixedly connected to the worm of the first worm gear unit 734, and the worm gear of the first worm gear unit 734 is disposed on the rotating shaft of the feed auger. The first universal joint 733 is introduced into the first transmission assembly 730. The first universal joint 733 eliminates the need for the rotating shaft of the second bevel gear 732 and the worm of the first worm gear unit 734 to be on the same straight line during transmission, thereby enabling the drive mechanism 700 of the present application to be adjusted according to the position of the transmission box 800 and the position of the feed auger, thereby reducing the overall volume of the device.

[0055] Preferably, the axis intersection angle between the first bevel gear 731 and the second bevel gear 732 is a right angle.

[0056] Furthermore, the second end of the aforementioned dual-output reducer 720 is mounted on the top wall of the transmission case 800. A second transmission assembly 740 is disposed within the transmission case 800. The second transmission assembly 740 includes a second universal joint 741 and a second worm gear unit 742. One end of the second universal joint 741 is fixedly connected to the second end of the dual-output reducer 720, and the other end of the second universal joint 741 is fixedly connected to the worm of the second worm gear unit 742. The other end of the worm of the second worm gear unit 742 is rotatably mounted on the bottom wall of the transmission case 800. The worm wheel of the second worm gear unit 742 is mounted on the rotating shaft of either drying auger. When the second end of the dual-output reducer 720 outputs power, the worm wheel of the second worm gear unit 742 is driven by the second universal joint 741 and the worm gear of the second worm gear unit 742, thereby driving the drying auger.

[0057] A transmission gear and a transmission chain are arranged between the two drying augers in the vertical direction, and the transmission chain meshes with the transmission gear to realize sprocket transmission.

[0058] Preferably, in the present application, the worm gear of the second worm gear unit 742 is arranged on the rotating shaft of the uppermost drying auger.

[0059] The aforementioned third transmission assembly 750 includes a third bevel gear 751, a fourth bevel gear 752, and a transition drive shaft 753. The third bevel gear 751 is mounted on the shaft of the drying auger, and the fourth bevel gear 752 meshes with the third bevel gear 751 for transmission. A transmission gear is mounted on the shaft of the fourth bevel gear 752. The transition drive shaft 753 is mounted on the transmission case 800, and another transmission gear is mounted on the transition drive shaft 753. A transmission chain is mounted between the two transmission gears. An output pulley is also mounted on the transition drive shaft 753, and a driven pulley is also mounted on the shaft of the guide auger. A transmission belt is mounted between the output pulley and the driven pulley, and the transmission belt is used to connect the output pulley and the driven pulley, thereby enabling the transition drive shaft 753 to drive the guide auger to rotate.

[0060] Preferably, the third bevel gear 751 is provided on the drying auger where the second worm gear is located, and the axis intersection angle between the third bevel gear 751 and the fourth bevel gear 752 is a right angle.

[0061] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A drying device for a dry ball mill, characterized in that: include: A hopper (100) is provided with a feeding mechanism for feeding materials into the ball mill; The feeding mechanism (200) comprises a feeding pipe (210), a first end of the feeding pipe (210) being in communication with the hopper (100), and a feeding auger being provided in the feeding pipe (210); The drying mechanism (300) comprises a drying pipe (310), wherein a first end of the drying pipe (310) is in communication with a second end of the feed pipe (210), a second end of the drying pipe (310) is in communication with the hopper (100), a drying auger is provided in the drying pipe (310), and a heating unit (320) is provided outside the drying pipe (310); The machine frame (400) is provided, and the hopper (100) is arranged below the machine frame (400).

2. The drying device for a dry ball mill according to claim 1, characterized in that: The hopper (100) is located on one side of the frame (400); A plurality of drying pipes (310) are provided, and several of the drying pipes (310) are arranged transversely along the vertical direction of the frame (400). The first end of the drying pipe (310) located at the top is connected to the feed pipe (210), the second end of the drying pipe (310) located at the bottom is connected to the hopper (100), and the remaining drying pipes (310) are connected in sequence from end to end through the transition pipe (220).

3. The drying device for a dry ball mill according to claim 2, characterized in that: The drying device for a dry ball mill further comprises a guide pipe (510), wherein the guide pipe (510) is in communication with the second end of the feed pipe (210), the feed pipe (210) is arranged along the radial direction of the guide pipe (510), and the guide pipe (510) is also in communication with the uppermost drying pipe (310), and a guide auger is arranged in the guide pipe (510); The drying device for a dry ball mill further comprises an overflow pipe (610), wherein a first end of the overflow pipe (610) is in communication with the guide pipe (510), and a second end of the overflow pipe (610) is in communication with the hopper (100).

4. The drying device for a dry ball mill according to claim 3, characterized in that: The guide pipe (510) is arranged above the frame (400), and is located on both sides of the frame (400) with the hopper (100).

5. The drying device for a dry ball mill according to claim 1, characterized in that: The heating unit (320) is a heating belt, and the heating belt is wound around the drying pipe (310).

6. The drying device for a dry ball mill according to claim 2, characterized in that: A bottom frame (410) is provided at the bottom end of the frame (400), the bottom frame (410) is tilted, and the hopper (100) is located on a lower side of the bottom frame (410).

7. The drying device for a dry ball mill according to claim 3, characterized in that: The drying device for the dry ball mill further comprises a driving mechanism (700), the driving mechanism (700) being arranged on the frame (400), the driving mechanism (700) comprising a driving source (710), the output end of the driving source (710) being connected to a dual-output reducer (720), the first output end of the dual-output reducer (720) being provided with a first transmission assembly (730), the first output end of the dual-output reducer (720) driving the feeding auger to rotate via the first transmission assembly (730); the second output end of the dual-output reducer (720) being provided with a second transmission assembly (740), the second output end of the dual-output reducer (720) driving the drying auger to rotate via the second transmission assembly (740); A third transmission assembly (750) is also provided on the guide auger, and the third transmission assembly (750) is in transmission connection with the second transmission assembly (740).

8. The drying device for a dry ball mill according to claim 7, characterized in that: The first transmission assembly (730) includes a first bevel gear (731), a second bevel gear (732), a first universal joint (733), and a first worm gear unit (734). The first bevel gear (731) is arranged at the first output end of the dual-output reducer (720). The second bevel gear (732) is meshed with the first bevel gear (731) for transmission. The worm of the first worm gear unit (734) and the rotating shaft of the second bevel gear (732) are transmitted through the first universal joint (733). The worm of the first worm gear unit (734) is arranged on the rotating shaft of the feed auger.

9. The drying device for a dry ball mill according to claim 8, characterized in that: A transmission box (800) is provided on the side of the frame (400), the driving source (710) and the dual-output reducer (720) are provided on the transmission box (800), the second end of the dual-output reducer (720) is provided through the top wall of the transmission box (800), the second transmission assembly (740) comprises a second universal joint (741) and a second worm gear unit (742), one end of the second universal joint (741) is fixedly connected to the second output end of the dual-output reducer (720), and the other end is fixedly connected to the worm of the second worm gear unit (742), the worm of the second worm gear unit (742) is rotatably provided on the bottom wall of the transmission box (800), and the worm of the second worm gear unit (742) is provided on the rotating shaft of any one of the drying auger; Any two adjacent drying augers are driven by sprockets.

10. The drying device for a dry ball mill according to claim 9, characterized in that: The third transmission assembly (750) includes a third bevel gear (751), a fourth bevel gear (752), and a transition transmission shaft (753); the third bevel gear (751) is arranged on the rotating shaft of the drying auger; the fourth bevel gear (752) and the third bevel gear (751) are meshed and transmitted; a sprocket transmission is performed between the rotating shaft of the fourth bevel gear (752) and the transition transmission shaft (753); and the transition transmission shaft (753) is connected to the rotating shaft of the guide auger in a transmission manner.

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