A disc-type vertical mill air-locking feeding device with material level control function

Abstract

The present invention relates to a disc-type vertical mill air-locking feeding device with a material level control function, which relates to the field of cement processing equipment, including a material conveyor belt, a material level bin, a vertical mill, and a receiving hopper arranged at the upper end of the material level bin, and also includes: a disc-type feeder connected to the outlet of the material level bin, the outlet of the disc-type feeder is connected to a discharge chute connected to the feed port of the vertical mill; the disc-type feeder includes a material disc, and the feeding amount is set by adjusting the rotation speed of the material disc while realizing the material level control of the material level bin; the material disc is driven to rotate so that the material is discharged from the material level bin, and then transported by the disc-type feeder to form a material column, and the formation of the material column seals the air from the receiving hopper and the outside of the device, thereby realizing the air-locking function. The present invention has smooth feeding and good air-locking effect, and also realizes the material level control of the material level bin, and the use and control are more flexible.

Description

Technical Field

[0001] The invention belongs to the field of cement processing equipment, and in particular relates to a disc-type vertical mill air-locking feeding device with a material level control function. Background Art

[0002] With the industrial upgrading and refined management requirements of the cement industry in recent years, the feeding device used in cement plants for raw materials entering the vertical mill basically adopts a grid wheel to lock the wind, that is, a rotary feeder is used for feeding;

[0003] However, there are some disadvantages when using the grid wheel air locking device. First, the blades and the cylinder are often in a state of wear, and after being worn out, a large amount of air leakage is caused. Second, due to the stickiness of the raw materials, blockage often occurs. In order to deal with the blockage of sticky materials, some people directly remove the grid wheel air locking device and connect it directly to the vertical mill with a pipe. However, this operation will cause the air leakage to worsen. The leaked air will directly increase the load of the circulation fan and the tail exhaust fan of the vertical mill system, increase energy consumption, and add more costs to the cement plant. In addition, for production lines with sticky materials, a large amount of raw materials will be stuck in the sectors of the grid wheel air locking device. After running for a period of time, it is necessary to stop the machine and use a pickaxe to knock it off. The labor intensity is high and it will affect the normal operation of the vertical mill. In this regard, we propose a disc-type vertical mill air locking feeding device with material level control function. Summary of the invention

[0004] The purpose of the present invention is to provide a disc-type vertical mill air-locking feeding device with a material level control function in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A disc-type vertical mill air-locking feeding device with a material level control function comprises a material conveyor belt, a material level bin, a vertical mill and a receiving hopper arranged at the upper end of the material level bin, and also comprises:

[0007] A disc feeder connected to the outlet of the material bin, wherein the outlet of the disc feeder is connected to a discharge chute connected to the feed inlet of the vertical mill;

[0008] The disc feeder includes a feed disc, and the feed amount is set by adjusting the rotation speed of the feed disc and the material level of the material bin is controlled at the same time;

[0009] The material disc is driven to rotate so that the material is discharged from the material bin and then transported by the disc feeder to form a material column. The formation of the material column seals the air from the receiving hopper and the outside of the device, thereby realizing the air locking function.

[0010] As a further optimization solution of the present invention, the disc feeder also includes a shell and a drive assembly, the feed disc is arranged in the shell, and the drive assembly is connected to the feed disc to drive the feed disc to rotate.

[0011] As a further optimization scheme of the present invention, the shell comprises an upper shell and a lower shell, the upper end of the upper shell is provided with a feed port, and a three-layer cylinder is connected to one side of the upper shell, a material baffle ring with an opening welded therein is provided inside the upper shell, the opening of the material baffle ring faces the three-layer cylinder and an inclined material baffle plate is welded at the opening of the material baffle ring, a scraper plate for cleaning leaked material is provided at the lower end of the material tray, the lower end of the three-layer cylinder is connected to the second-layer cylinder, and an inspection port is provided on the outer side of the three-layer cylinder,

[0012] The lower end of the second-layer cylinder is connected to the first-layer cylinder, and a discharge port is welded on the first-layer cylinder.

[0013] As a further optimization scheme of the present invention, the driving assembly includes a supporting frame arranged on the lower shell, a driving reducer arranged on the supporting frame, a driving gear arranged on the output shaft of the driving reducer, and a slewing bearing connected to the material tray, and the slewing bearing is meshingly connected to the driving gear.

[0014] As a further optimization solution of the present invention, a supporting device for supporting and a weighing device for controlling the material level of the material level bin between a set maximum value and a set minimum value are provided on the outside of the material level bin.

[0015] As a further optimization scheme of the present invention, a three-way valve is provided between the receiving hopper and the material level bin, and a connecting pipe connected to the remaining interface of the three-way valve is connected to the discharge chute.

[0016] As a further optimization scheme of the present invention, the vertical mill air-locking feeding device also includes a hot air pipe, which includes a first branch pipe connected to one side of the material level bin, a second branch pipe connected to the other side of the material level bin and connected to the disc feeder, and a third branch pipe connected to the other side of the disc feeder. The hot air enters the material level bin and the disc feeder through the hot air pipe to achieve the drying effect on the material.

[0017] As a further optimization solution of the present invention, the vertical mill air-locking feeding device also includes a main control machine, and the weighing device and the driving reducer are respectively connected to the universal I / O port of the main control machine.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention is provided with a disc feeder, which drives the disc of the disc feeder to rotate so that the material is discharged from the material bin, and then transported by the disc feeder to form a material column. The formation of the material column seals the air from the receiving hopper and the outside of the device, thereby realizing the wind locking function.

[0020] 2. The present invention is provided with a weighing device to weigh the material bin, and at the same time, the feeding amount is set by adjusting the rotation speed of the material tray to realize material level control of the material bin, which is flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0022] Figure 2 The present invention provides Figure 1 Left view of;

[0023] Figure 3 A schematic diagram of the structure of the disc feeder provided by the present invention;

[0024] Figure 4 A schematic diagram of the material and hot air flow provided by the present invention;

[0025] In the figure: 1. Incoming material conveyor; 2. Receiving hopper; 3. Three-way valve; 4. Support device; 5. Weighing device; 6. Material level bin; 7. Disc feeder; 71. Upper shell; 72. Material retaining ring; 73. Feeding port; 74. Material retaining plate; 75. Material tray; 76. Three-layer cylinder; 77. Inspection port; 78. Lower shell; 79. Support frame; 710. Driving reducer; 711. Driving gear; 712. Slewing bearing; 713. Scraper plate; 714. One-layer cylinder; 715. Discharging port; 716. Two-layer cylinder; 8. Hot air pipe; 9. Connecting pipe; 10. Discharging chute; 11. Vertical mill; 12. Main control machine. DETAILED DESCRIPTION

[0026] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0027] Example 1

[0028] like Figure 1-2As shown, a disc-type vertical mill air-locking feeding device with material level control function comprises an incoming material belt conveyor 1, a material level bin 6, a vertical mill 11 and a receiving hopper 2 arranged at the upper end of the material level bin 6, and further comprises: a disc feeder 7 connected to the outlet of the material level bin 6, wherein the outlet of the disc feeder 7 is connected to a discharge chute 10 connected to the feeding end of the vertical mill 11; the disc feeder 7 comprises a material tray 75, and the disc feeder 7 further comprises a housing and a driving assembly, wherein the material tray 75 is arranged in the housing, and the driving assembly is connected to the material tray 75 for driving the material tray 75 to rotate. Specifically, the bulk material is fed by the incoming material belt conveyor 1 The material enters the material bin 6 through the receiving hopper 2 for temporary storage. The material bin 6 is connected to the disc feeder 7. The material in the material bin 6 falls on the material tray 75 of the disc feeder 7. The driving component drives the material tray 75 to rotate and transports the material to the discharge chute 10. The material is transported through the discharge chute 10 and enters the vertical mill 11. The feeding amount is set by adjusting the rotation speed of the material tray 75 and the material level of the material bin 6 is controlled at the same time. In addition, the material tray 75 is driven to rotate to discharge the material from the material bin 6, and then transported through the disc feeder 7 to form a material column. The formation of the material column seals the air from the receiving hopper 2 and the outside of the device, thereby realizing the wind locking function.

[0029] Example 2

[0030] On the basis of Example 1, Figure 3 As shown, the shell includes an upper shell 71 and a lower shell 78, the upper end of the upper shell 71 is provided with a feed port 73, and one side of the upper shell 71 is connected to a three-layer cylinder 76, the upper shell 71 is provided with a material retaining ring 72 with an opening welded therein, the material retaining ring 72 prevents the material from being scraped and worn by the three-layer cylinder 76, the opening of the material retaining ring 72 faces the three-layer cylinder 76, and an inclined material retaining plate 74 is welded at the opening of the material retaining ring 72 to guide the material in an orderly manner, the lower end of the material tray 75 is provided with a scraper plate 713 for cleaning the leaked material, and the lower end of the three-layer cylinder 76 is connected to the second-layer cylinder 71 6, and an inspection port 77 is provided on the outer side of the three-layer cylinder 76, the lower end of the two-layer cylinder 716 is connected to the one-layer cylinder 714, and the discharge port 715 is welded on the one-layer cylinder 714. The material enters the inner cavity of the disc feeder 7 from the feed port 73 and falls on the disc feeder disc 75. The rotation of the disc feeder 75 is driven and supported by the driving reducer 710, the driving gear 711, and the slewing bearing 712. Under the action of the baffle plate 74, the material is guided in an orderly manner, changes its flow and falls downward, is discharged from the discharge port 714, and enters the vertical mill 11 through the discharge chute 10.

[0031] The driving assembly includes a supporting frame 79 arranged on the lower shell 78, a driving reducer 710 arranged on the supporting frame 79, a driving gear 711 arranged on the output shaft of the driving reducer 710, and a slewing bearing 712 connected to the material tray 75. The slewing bearing 712 is meshedly connected with the driving gear 711. The driving reducer 710 drives the driving gear 711 of its output shaft to rotate, thereby driving the slewing bearing 712 to mesh and transmit, thereby causing the material tray 75 connected to the slewing bearing 712 to rotate accordingly. The rotation speed of the material tray 75 is controlled by the rotation speed of the driving reducer 710.

[0032] Example 3

[0033] On the basis of Example 2, Figure 4 As shown, a supporting device 4 for supporting and a weighing device 5 for controlling the material level of the material level bin 6 between a set maximum value and a set minimum value are provided on the outside of the material level bin 6, and the vertical mill air-locking feeding device also includes a main control machine 12, and the weighing device 5 and the driving reducer 710 are respectively connected to the general I / O port of the main control machine 12.

[0034] The specific method of controlling the material level of the material bin 6 is as follows: as the material accumulates in the material bin 6, the weight of the material bin 6 changes. If it is not adjusted, the material in the material bin 6 will exceed the maximum material level of the material bin 6. In this embodiment, the material bin 6 is weighed by the weighing device 5, and the weighing device 5 transmits the load feedback signal of the material bin 6 to the main control machine 12. The main control machine 12 sets the maximum weight value and the minimum weight value of the material bin 6 in advance. If the weight of the material bin 6 is higher than the set maximum weight value, the main control machine 12 2 sends the feeder motor control signal to the drive component to control the speed of the drive reducer 710 to increase, so that the feed amount of the feeder increases, and the material level of the material level bin 6 decreases accordingly. At the same time, the weighing device 5 continues to weigh the material level bin 6. When the weight of the material level bin 6 is lower than the set minimum weight value, the main control machine 12 sends the feeder motor control signal to the drive component to control the speed of the drive reducer 710 to decrease, so that the feed amount of the feeder is reduced. The material level control of the material level bin 6 is realized according to the above control method.

[0035] Example 4

[0036] On the basis of Example 3, Figure 1-2 As shown, a three-way valve 3 is provided between the receiving hopper 2 and the material level bin 6, and the remaining interface of the three-way valve 3 is connected to a connecting pipe 9, and the connecting pipe 9 is connected to a discharge chute 10. Specifically, when the equipment fails or is under maintenance, the three-way valve 3 is controlled to be connected to the connecting pipe 9, so that the material entering the receiving hopper 2 is directly fed to the vertical mill 11 through the connecting pipe 9, and the grinding system continues to work.

[0037] In addition, the vertical mill air-locking feeding device also includes a hot air pipe 8, which includes a first branch pipe connected from one side of the material level bin 6, a second branch pipe connected from the other side of the material level bin 6 and connected to the disc feeder 7, and a third branch pipe connected from the other side of the disc feeder 7. The hot air enters the material level bin 6 and the disc feeder 7 through the hot air pipe 8 to achieve the drying effect on the material.

[0038] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A disc-type vertical mill air-locking feeding device with material level control function, comprising a material conveyor belt (1), a material level bin (6), a vertical mill (11), and a receiving hopper (2) arranged at the upper end of the material level bin (6), characterized in that: Also includes: A disc feeder (7) connected to the outlet of the material bin (6), wherein the outlet of the disc feeder (7) is connected to a discharge chute (10) connected to the feed end of the vertical mill (11); The disc feeder (7) comprises a material disc (75), and the feeding amount is set by adjusting the rotation speed of the material disc (75) and the material level of the material bin (6) is controlled at the same time; The disc feeder (7) also includes a shell and a drive assembly, wherein the shell includes an upper shell (71) and a lower shell (78), wherein a feed port (73) is provided at the upper end of the upper shell (71), and a three-layer cylinder (76) is connected to one side of the upper shell (71), wherein a material retaining ring (72) with an opening welded therein is provided inside the upper shell (71), wherein the opening of the material retaining ring (72) faces the three-layer cylinder (76), and an inclined material retaining plate (74) is welded at the opening of the material retaining ring (72), wherein the lower end of the three-layer cylinder (76) is connected to the second-layer cylinder (716), and an inspection port (77) is provided on the outer side of the three-layer cylinder (76), wherein the lower end of the second-layer cylinder (716) is connected to the first-layer cylinder (714), and a material discharge port (715) is welded on the first-layer cylinder (714); The material disc (75) is driven to rotate so that the material is discharged from the material bin (6), and then transported by the disc feeder (7) to form a material column. The formation of the material column seals the air from the receiving hopper (2) and the outside of the device, thereby realizing the air locking function; The vertical mill air-locking feeding device also includes a hot air pipe (8), which includes a first branch pipe connected to one side of the material level bin (6), a second branch pipe connected to the other side of the material level bin (6) and connected to the disc feeder (7), and a third branch pipe connected to the other side of the disc feeder (7), one end of the second branch pipe extends into a cavity formed by the inner wall of the three-layer cylinder (76) and the outer wall of the material retaining ring (72), and hot air enters the material level bin (6) and the disc feeder (7) through the hot air pipe (8), thereby drying the material.

2. According to claim 1, a disc-type vertical mill air-locking feeding device with material level control function is characterized in that: The material tray (75) is arranged in the housing, and the driving assembly is connected to the material tray (75) for driving the material tray (75) to rotate.

3. According to claim 2, a disc-type vertical mill air-locking feeding device with material level control function is characterized in that: A scraper plate (713) for cleaning leaked material is provided at the lower end of the material tray (75).

4. According to the disc type vertical mill air-locking feeding device with material level control function as claimed in claim 1, it is characterized by: The driving assembly comprises a supporting frame (79) arranged on the lower shell (78), a driving reducer (710) arranged on the supporting frame (79), a driving gear (711) arranged on the output shaft of the driving reducer (710), and a slewing bearing (712) connected to the material tray (75), wherein the slewing bearing (712) is meshingly connected to the driving gear (711).

5. According to the disc type vertical mill air-locking feeding device with material level control function as claimed in claim 1, it is characterized by: The outer side of the material level bin (6) is provided with a supporting device (4) for supporting and a weighing device (5) for controlling the material level of the material level bin (6) between a set maximum value and a set minimum value.

6. According to claim 1, a disc-type vertical mill air-locking feeding device with material level control function is characterized in that: A three-way valve (3) is provided between the receiving hopper (2) and the material level bin (6), and the remaining interface of the three-way valve (3) is connected to a connecting pipe (9), and the connecting pipe (9) is connected to a discharge chute (10).

7. According to claim 5, a disc-type vertical mill air-locking feeding device with material level control function is characterized in that: The vertical mill air-locking feeding device also includes a main control machine (12), and the weighing device (5) and the driving reducer (710) are respectively connected to the universal I / O port of the main control machine (12).

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