Low-abrasion anti-blocking external circulation vertical roller mill

Abstract

The utility model relates to the technical field of vertical roller mills, and provides a low-abrasion anti-blocking external circulation vertical roller mill which comprises a barrel, two flow guide pipes, a bottom box, a millstone, a grinding roller, a supporting rod, a filter screen, a cleaning brush, a cleaning mechanism and a grinding mechanism, the barrel is provided with a feeding port and a discharging port, the two flow guide pipes are arranged on the barrel, and the bottom box is arranged on the bottom box. The cylinder body is fixedly connected to the bottom box, the grinding disc is rotatably arranged in the cylinder body, the two grinding rollers are rotatably arranged in the cylinder body, the multiple supporting rods are arranged in the cylinder body, the multiple filtering nets are arranged between every two adjacent supporting rods, the cleaning brushes are arranged in the cylinder body, and the cleaning brushes are arranged in the cylinder body. By means of the technical scheme, the problems that in the prior art, due to the fact that materials adhere to the filter screen for a long time, the filter screen is prone to being blocked, and then the material discharging efficiency is prone to being affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical roller mills, in particular to a low-wear and anti-blocking external circulation vertical roller mill. Background Art

[0002] Vertical roller mills have been widely used in various fields of powder production and can produce cement raw materials, cement clinker, limestone powder, coal powder, slag, lead-zinc tailings powder and iron ore in an energy-saving and efficient manner.

[0003] The principle of the existing vertical roller mill is as follows: the motor drives the grinding disc to rotate through the reducer, and the material falls from the feed port to the center of the grinding disc through the air lock feeder, and the hot air enters the mill from the air inlet. As the grinding disc rotates, the material moves to the edge of the grinding disc under the action of centrifugal force, and is crushed by the grinding roller when passing through the annular groove on the grinding disc. After crushing, the material is carried by the high-speed airflow of the wind ring at the edge of the grinding disc, and the large particles fall directly on the grinding disc for re-grinding. When the material in the airflow passes through the upper separator, under the action of the rotating rotor, the coarse powder falls from the cone bucket to the grinding disc for re-grinding, and the qualified fine powder is discharged from the mill with the airflow and collected by the dust collecting device, which is the product. The material containing moisture is dried in the process of contact with the hot air flow. By adjusting the hot air temperature, it can meet the requirements of materials with different humidity and achieve the required product moisture. Because the material with moisture in the material is crushed, when passing through the filter, more fine materials are easy to adhere to the filter. If it adheres to the filter for a long time, it is easy to cause clogging of the filter, which is easy to affect the efficiency of material discharge. Utility Model Content

[0004] The utility model provides a low-wear and anti-clogging external circulation vertical roller mill, which solves the problem in the related art that materials adhere to the filter screen for a long time, easily clogging the filter screen and thus easily affecting the efficiency of material discharging.

[0005] The technical solution of the utility model is as follows: a low-wear and anti-blocking external circulation vertical roller mill, comprising: a cylinder, a guide pipe, a bottom box, a grinding disc, a grinding roller, a support rod, a filter screen, a cleaning brush, a cleaning mechanism and a grinding mechanism;

[0006] The cylinder is provided with a feed inlet and a discharge outlet;

[0007] There are two flow guide pipes, and both of them are arranged on the cylinder;

[0008] The cylinder is fixedly connected to the bottom box;

[0009] The grinding disc is rotatably arranged in the cylinder;

[0010] There are two grinding rollers, and both grinding rollers are rotatably arranged in the cylinder;

[0011] There are multiple support rods, and the multiple support rods are all arranged in the cylinder;

[0012] There are multiple filter screens, and the multiple filter screens are respectively arranged between every two adjacent support rods;

[0013] The cleaning brush is arranged in the cylinder;

[0014] The cleaning mechanism is arranged in the cylinder body and is used for cleaning the filter screen;

[0015] The grinding mechanism is arranged in the cylinder and is used for grinding the material.

[0016] Preferably, the cleaning mechanism comprises: a rotating plate, a lifting ring, a lifting rod and a driving assembly;

[0017] The rotating plate is rotatably arranged in the cylinder, and the top ends of the plurality of support rods are slidably arranged on the rotating plate;

[0018] The lifting ring is arranged in the cylinder, the bottom ends of the plurality of support rods are rotatably arranged on the lifting ring, and the cleaning brush is arranged on the lifting ring;

[0019] The lifting rod is arranged in the cylinder, and the lifting ring is rotatably arranged on the lifting rod;

[0020] The driving assembly is arranged on the cylinder body and is used for driving the lifting rod to move.

[0021] Further, the driving assembly includes: a rotating gear, a driving gear, a fixing frame, a first motor and a first electric cylinder;

[0022] The rotating gear is arranged on the lifting rod;

[0023] The driving gear is rotatably arranged on the cylinder, and the driving gear is meshed with the rotating gear;

[0024] The fixing frame is fixedly connected to the cylinder;

[0025] The first motor is arranged on a fixing frame, and an output end of the first motor passes through the fixing frame and is fixedly connected to a driving gear;

[0026] The first electric cylinder is arranged on a fixing frame, and an output end of the first electric cylinder passes through the fixing frame and is rotatably connected to the lifting rod.

[0027] Furthermore, the grinding mechanism includes: a push plate, a rotating seat, a second electric cylinder and a rotating assembly;

[0028] There are two push plates, both of which are rotatably mounted on the cylinder, and the two grinding rollers are rotatably mounted on the two push plates respectively;

[0029] There are two rotating seats, and both rotating seats are arranged on the bottom box;

[0030] There are two second electric cylinders, which are respectively arranged on two rotating seats, and the output ends of the two second electric cylinders are respectively rotatably connected to the two push plates;

[0031] The rotating assembly is arranged in the bottom box and is used for driving the grinding disc to rotate.

[0032] As a further solution of the present application, the rotating assembly includes: a rotating gear, a power gear and a second motor;

[0033] The rotating gear is fixedly connected to the grinding disc;

[0034] The power gear is meshed with the rotating gear;

[0035] The second motor is arranged in the bottom box, and the output end of the second motor is fixedly connected to the power gear.

[0036] As a further solution of the present application, a plurality of sliders are slidably arranged on the rotating plate, and the top ends of the plurality of support rods are rotatably arranged on the plurality of sliders respectively.

[0037] The working principle and beneficial effects of the utility model are:

[0038] 1. In the utility model, the cooperation between the cleaning mechanism and the support rod facilitates the rapid and comprehensive cleaning of the filter screen, thereby reducing the clogging of the filter screen.

[0039] 2. In the utility model, the grinding mechanism is arranged to facilitate rapid and stable grinding of materials, thereby improving the grinding efficiency of materials.

[0040] 3. In the utility model, the coordination among the cylinder, the guide tube, the bottom box, the grinding disc, the grinding roller, the support rod, the filter, the cleaning brush, the cleaning mechanism and the grinding mechanism facilitates the rapid cleaning of the filter, effectively prevents the filter from being blocked, and improves the material grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0042] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0043] Figure 2 It is a schematic diagram of the structure of the utility model in cross section;

[0044] Figure 3 This is a schematic diagram of the structure of the cleaning mechanism of the utility model;

[0045] Figure 4 It is a structural schematic diagram of the rotating assembly of the utility model.

[0046] In the figure: 1. Cylinder; 2. Guide pipe; 3. Bottom box; 4. Grinding disc; 5. Grinding roller; 6. Support rod; 7. Filter screen; 8. Cleaning brush; 9. Rotating plate; 10. Lifting ring; 11. Lifting rod; 12. Rotating gear; 13. Driving gear; 14. Fixed frame; 15. First motor; 16. First electric cylinder; 17. Push plate; 18. Rotating seat; 19. Second electric cylinder; 20. Rotating gear; 21. Power gear; 22. Second motor; 23. Sliding block. DETAILED DESCRIPTION

[0047] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] like Figure 1~Figure 4 As shown, this embodiment proposes a low-wear and anti-blocking external circulation vertical roller mill, including: a cylinder 1, a guide pipe 2, a bottom box 3, a grinding disc 4, a grinding roller 5, a support rod 6, a filter screen 7, a cleaning brush 8, a cleaning mechanism and a grinding mechanism, a plurality of sliders 23 are slidably arranged on a rotating plate 9, the top ends of the plurality of support rods 6 are rotatably arranged on the plurality of sliders 23, a feed inlet and a discharge port are opened on the cylinder 1, two guide pipes 2 are provided, the two guide pipes 2 are both arranged on the cylinder 1, the cylinder 1 is fixedly connected to the bottom box 3, the grinding disc 4 is rotatably arranged in the cylinder 1, and the grinding roller 5 is provided with two, and the two grinding rollers 5 are rotatably arranged in the cylinder 1, a plurality of support rods 6 are provided, and the plurality of support rods 6 are arranged in the cylinder 1, a plurality of filter screens 7 are provided, and the plurality of filter screens 7 are respectively arranged between each two adjacent support rods 6, and a cleaning brush 8 is arranged in the cylinder 1. Through the cooperation among the cylinder 1, the guide tube 2, the bottom box 3, the grinding disc 4, the grinding roller 5, the support rod 6, the filter screen 7, the cleaning brush 8, the cleaning mechanism and the grinding mechanism, it is convenient to quickly clean the filter screen 7, effectively prevent the filter screen 7 from being blocked, and improve the material grinding effect.

[0049] Wherein, a cleaning mechanism is arranged in the cylinder 1, and is used for cleaning the filter screen 7. The cleaning mechanism comprises: a rotating plate 9, a lifting ring 10, a lifting rod 11 and a driving assembly. The rotating plate 9 is rotatably arranged in the cylinder 1, and the top ends of the plurality of support rods 6 are all slidably arranged on the rotating plate 9. The lifting ring 10 is arranged in the cylinder 1, and the bottom ends of the plurality of support rods 6 are all rotatably arranged on the lifting ring 10. The cleaning brush 8 is arranged on the lifting ring 10, and the lifting rod 11 is arranged in the cylinder 1. The lifting ring 10 is rotatably arranged on the lifting rod 11. The driving assembly is arranged on the cylinder 1, and is used to drive the lifting rod 11 to move. The driving assembly comprises: a rotating gear 12, a driving gear 13, a fixing frame 14, a first motor 15 and a first electric cylinder 16. The rotating gear 12 is arranged on the lifting rod 11, and the driving gear 13 is rotatably arranged on the cylinder 1, and the driving gear 13 is meshed with the rotating gear 12. The fixing frame 14 is fixedly connected to the cylinder body 1, the first motor 15 is arranged on the fixing frame 14, the output end of the first motor 15 passes through the fixing frame 14 and is fixedly connected to the driving gear 13, the first electric cylinder 16 is arranged on the fixing frame 14, the output end of the first electric cylinder 16 passes through the fixing frame 14 and is rotatably connected to the lifting rod 11. Specifically, the lifting rod 11 is driven to rise by the first electric cylinder 16 arranged on the fixing frame 14, and the lifting ring 10 and the cleaning brush 8 are driven to rise when the lifting rod 11 rises. When the lifting ring 10 rises, multiple support rods 6 are lifted. At this time, the top ends of the multiple support rods 6 expand outward, and the cleaning brush 8 contacts the filter screen 7, and the driving gear 13 and the rotating gear 12 are driven to rotate by the first motor 15 arranged on the fixing frame 14, thereby driving the lifting rod 11 and the cleaning brush 8 to rotate, and then the impurities on the filter screen 7 are cleaned.

[0050] Among them, the grinding mechanism is arranged in the cylinder 1, which is used to grind the material. The grinding mechanism includes: a push plate 17, a rotating seat 18, a second electric cylinder 19 and a rotating assembly. There are two push plates 17, and the two push plates 17 are rotatably arranged on the cylinder 1. The two grinding rollers 5 are rotatably arranged on the two push plates 17 respectively. There are two rotating seats 18, and the two rotating seats 18 are arranged on the bottom box 3. There are two second electric cylinders 19, and the two second electric cylinders 19 are respectively arranged on the two rotating seats 18. The output ends of the two second electric cylinders 19 are respectively rotatably connected with the two push plates 17. The rotating assembly is arranged in the bottom box 3, which is used to drive the grinding disc 4 to rotate. The rotating assembly includes: a rotating gear 20 , a power gear 21 and a second motor 22, the rotating gear 20 is fixedly connected to the grinding disc 4, the power gear 21 is meshed with the rotating gear 20, the second motor 22 is arranged in the bottom box 3, and the output end of the second motor 22 is fixedly connected to the power gear 21. Specifically, the power gear 21 and the rotating gear 20 are driven to rotate by the second motor 22 arranged in the bottom box 3, thereby driving the grinding disc 4 to rotate, and when the grinding disc 4 rotates, the grinding roller 5 is driven to rotate with the grinding disc 4, so as to grind and crush the material on the grinding disc 4. When grinding the material, the push plate 17 is driven to move by the second electric cylinder 19 arranged on the rotating seat 18, so as to adjust the grinding force of the grinding roller 5.

[0051] In this embodiment, when it is necessary to grind the material, the material is poured onto the grinding disc 4 through the feed port, and then the second motor 22 arranged in the bottom box 3 drives the power gear 21 and the rotating gear 20 to rotate, thereby driving the grinding disc 4 to rotate. When the grinding disc 4 rotates, the grinding roller 5 is driven to rotate along with the grinding disc 4, so as to grind and crush the material on the grinding disc 4. When the material is ground, the push plate 17 is driven to move by the second electric cylinder 19 arranged on the rotating seat 18, so as to adjust the grinding force of the grinding roller 5, and the filter screen 7 is released. When blockage occurs, the first electric cylinder 16 arranged on the fixed frame 14 drives the lifting rod 11 to rise, and when the lifting rod 11 rises, it drives the lifting ring 10 and the cleaning brush 8 to rise. When the lifting ring 10 rises, it lifts up the multiple support rods 6. At this time, the top ends of the multiple support rods 6 expand outward, and the cleaning brush 8 contacts the filter screen 7. The first motor 15 arranged on the fixed frame 14 drives the driving gear 13 and the rotating gear 12 to rotate, thereby driving the lifting rod 11 and the cleaning brush 8 to rotate, and then cleaning the impurities on the filter screen 7.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-wear and anti-blocking external circulation vertical roller mill, characterized in that: include: A cylinder (1), wherein the cylinder (1) is provided with a feed inlet and a discharge outlet; A flow guide pipe (2), wherein two flow guide pipes (2) are provided, and both of the two flow guide pipes (2) are arranged on the cylinder (1); A bottom box (3), the cylinder (1) being fixedly connected to the bottom box (3); a grinding disc (4), the grinding disc (4) being rotatably disposed in the cylinder (1); A grinding roller (5), wherein two grinding rollers (5) are provided, and both grinding rollers (5) are rotatably arranged in the cylinder (1); A support rod (6), wherein a plurality of the support rods (6) are provided, and the plurality of the support rods (6) are all arranged in the cylinder (1); A filter screen (7), wherein a plurality of the filter screens (7) are provided, and the plurality of filter screens (7) are respectively arranged between each two adjacent support rods (6); A cleaning brush (8), the cleaning brush (8) being arranged inside the barrel (1); a cleaning mechanism, the cleaning mechanism being arranged in the cylinder (1) and being used for cleaning the filter screen (7); A grinding mechanism, wherein the grinding mechanism is arranged in the cylinder (1) and is used for grinding materials.

2. The low-wear and anti-blocking external circulation vertical roller mill according to claim 1 is characterized in that: The cleaning mechanism comprises: A rotating plate (9), the rotating plate (9) being rotatably disposed in the cylinder (1), and the top ends of the plurality of support rods (6) being slidably disposed on the rotating plate (9); A lifting ring (10), wherein the lifting ring (10) is arranged in the cylinder (1), the bottom ends of the plurality of support rods (6) are rotatably arranged on the lifting ring (10), and the cleaning brush (8) is arranged on the lifting ring (10); A lifting rod (11), the lifting rod (11) being arranged in the cylinder (1), and the lifting ring (10) being rotatably arranged on the lifting rod (11); A driving assembly, wherein the driving assembly is arranged on the cylinder (1) and is used to drive the lifting rod (11) to move.

3. The low-wear and anti-blocking external circulation vertical roller mill according to claim 2 is characterized in that: The drive assembly comprises: A rotating gear (12), wherein the rotating gear (12) is arranged on the lifting rod (11); a driving gear (13), the driving gear (13) being rotatably disposed on the cylinder (1), the driving gear (13) being meshed with the rotating gear (12); A fixing frame (14), the fixing frame (14) being fixedly connected to the cylinder (1); a first motor (15), the first motor (15) being arranged on the fixing frame (14), the output end of the first motor (15) passing through the fixing frame (14) and being fixedly connected to the driving gear (13); A first electric cylinder (16), wherein the first electric cylinder (16) is arranged on the fixing frame (14), and an output end of the first electric cylinder (16) passes through the fixing frame (14) and is rotatably connected to the lifting rod (11).

4. The low-wear and anti-blocking external circulation vertical roller mill according to claim 3 is characterized in that: The grinding mechanism comprises: A push plate (17), wherein two push plates (17) are provided, and both of the two push plates (17) are rotatably disposed on the cylinder (1), and the two grinding rollers (5) are rotatably disposed on the two push plates (17), respectively; A rotating seat (18), wherein two rotating seats (18) are provided, and both rotating seats (18) are arranged on the bottom box (3); A second electric cylinder (19), wherein two second electric cylinders (19) are provided, and the two second electric cylinders (19) are respectively arranged on the two rotating seats (18), and the output ends of the two second electric cylinders (19) are respectively rotatably connected to the two push plates (17); A rotating assembly, the rotating assembly being arranged in the bottom box (3) and being used for driving the grinding disc (4) to rotate.

5. The low-wear and anti-blocking external circulation vertical roller mill according to claim 4, characterized in that: The rotating assembly comprises: A rotating gear (20), the rotating gear (20) being fixedly connected to the grinding disc (4); A power gear (21), the power gear (21) meshing with the rotating gear (20); A second motor (22), wherein the second motor (22) is disposed in the bottom box (3), and an output end of the second motor (22) is fixedly connected to the power gear (21).

6. The low-wear and anti-blocking external circulation vertical roller mill according to claim 5, characterized in that: A plurality of sliders (23) are slidably disposed on the rotating plate (9), and the top ends of the plurality of support rods (6) are rotatably disposed on the plurality of sliders (23).

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