Impurity discharging feeder for pulverizer

Abstract

The utility model relates to the technical field of feeders, in particular to an impurity-removing feeder for a pulverizer, which comprises a box body and a feeding roller, a feeding port is arranged at the upper end of the box body, a material outlet and an impurity-removing outlet are arranged at the lower end of the box body, a fixed striker plate is obliquely arranged in the box body, and a blanking channel is formed between the fixed striker plate and the front side wall of the box body. The feeding roller is close to the fixed material blocking plate and installed in the discharging channel, a first material receiving plate is arranged on the front side wall of the box body in a downward inclined mode and arranged below the feeding roller, a second material receiving plate is arranged below the fixed material blocking plate, an iron removing mechanism is arranged on the back side of the second material receiving plate, and a third material receiving plate is arranged at the top of the impurity discharging outlet in an inclined mode and arranged on the back side of the third material receiving plate. The material receiving plate I, the material receiving plate II and the material receiving plate III are arranged in an S shape; and a scraper conveyor is arranged at the bottom of the impurity discharge outlet. According to the utility model, climbing operation of operators can be avoided, the labor intensity and potential safety hazards of the workers are reduced, non-stop conveying can be realized through the scraper conveyor, and continuous production is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of feeders, in particular to a debris removal feeder for a pulverizer. Background Art

[0002] At present, when feed raw materials are crushed, some impurities such as iron blocks and stones are often mixed in. When these impurities enter the grinder with the raw materials, the raw materials will not be completely crushed, the hammer will be severely worn or even broken, and more seriously, the grinder screen will be damaged. Therefore, it is necessary to remove impurities before the raw materials enter the grinder for crushing.

[0003] like Figure 1 As shown, the existing crusher feeder is provided with an iron removal device and a stone removal device. After the material enters the feeder from the feed port, it falls on the iron removal device through the impeller, wherein the iron filings are adsorbed on the stainless steel plate of the iron removal device by the suction force of the high magnet. When a large amount of iron filings are accumulated, the iron removal device is opened by the cylinder drive. After the stainless steel plate is disengaged from the magnet, the iron filings adsorbed on the stainless steel plate lose the magnetic force and fall outside the feeder. They are cleaned regularly by manual labor, and then the cylinder is returned to the position to continue to complete the next iron removal work; non-metallic materials and impurities continue to flow forward along the stainless steel plate until they fall from the stainless steel plate and perform inertial free fall motion. Under the action of the opposite wind force, the heavy stone is less affected by the wind force, and continues to perform inertial free fall motion, and falls into the spiral feeder from the lower impurity outlet, and is discharged into the impurity box through the cloth bag under the outlet of the spiral feeder, and is regularly cleaned by full-time personnel; and because the feed has a lighter specific gravity and is greatly affected by the wind force, it is blown to the feed outlet by the wind and discharged into the crusher.

[0004] The above-mentioned iron removal device has the following problems: (1) Although it can remove a large amount of iron filings, a small amount of iron filings will be adsorbed on the inclined plate above the iron filing outlet under the iron removal device during the process of being discharged from the feeder. When the cylinder returns to the position, it is strongly magnetically adsorbed to the iron removal device, affecting the seal between the iron removal device and the feeder, causing leakage; (2) When the spiral feeder is discharging stones, large stones are easy to get stuck on the main spiral shaft, causing the spiral shaft to be unable to rotate, resulting in the motor overloading and burning. The spiral feeder needs to be disassembled for maintenance, and the maintenance cost is relatively high; (3) Since iron filings and stones need to be cleaned regularly, the labor cost is relatively high. In addition, the installation position of the feeder is relatively high, and impurities such as iron filings and stones are not convenient to collect, which poses a safety hazard. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a debris feeder for a crusher, so as to discharge the iron slag and stones in the material from the debris outlet at the same time, eliminate the safety hazard of operators climbing up, and can also transport the debris in the forward and reverse directions to avoid the technical effect of motor overload and burning.

[0006] To achieve this technical purpose, the utility model adopts the following scheme:

[0007] A debris removal feeder for a pulverizer comprises a box body and a feeding roller, wherein a feeding port is arranged at the upper end of the box body, a material outlet and a debris removal outlet are arranged at the lower end, a fixed material baffle plate is arranged obliquely inside the box body, a material drop channel is formed between the fixed material baffle plate and the front side wall of the box body, the feeding roller is installed in the material drop channel close to the fixed material baffle plate, a material receiving plate 1 is arranged obliquely downwardly on the front side wall of the box body, the material receiving plate 1 is placed below the feeding roller, a material receiving plate 2 is arranged below the fixed material baffle plate, an iron removal mechanism is arranged on the back side of the material receiving plate 2, a material receiving plate 3 is arranged obliquely on the top of the debris removal outlet, the material receiving plate 1, the material receiving plate 2 and the material receiving plate 3 are arranged in an S shape; a scraper conveyor is arranged at the bottom of the debris removal outlet.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] The utility model is provided with a receiving plate one, a receiving plate two and a receiving plate three inside. The material falls from the feeding roller onto the receiving plate one, and falls onto the receiving plate two along the receiving plate one. The iron slag is adsorbed on the receiving plate two by the iron removing mechanism. The material and the material mixed therein fall along the receiving plate two. The material falling on the receiving plate three is blown back into the material outlet due to its small specific gravity. When the iron removing mechanism is separated from the receiving plate two, the iron slag falls along the receiving plate two to the receiving plate three, and is discharged from the impurity discharge outlet to the scraper conveyor with the stones. The iron removal and stone removal in the device are all discharged from one discharge port, so that the operating workers are prevented from working at heights, and the labor intensity and safety hazards of the operating workers are reduced. The forward and reverse rotation of the scraper conveyor motor is controlled to achieve non-stop transportation, thereby ensuring continuous production. It can also effectively prevent foreign objects from getting stuck on the scraper, protect the motor, and reduce maintenance costs.

[0010] Further, the preferred embodiment of the present invention is:

[0011] The receiving plate 1 is connected to the front side wall of the box body through the fixing plate 1. The receiving plate 1 is provided with an adjusting hole 1, and the fixing plate is provided with a fixing hole. The receiving plate 1 and the fixing plate 1 are locked by a bolt 1 penetrating the adjusting hole 1 and the fixing hole 1.

[0012] The iron removal mechanism includes a magnet and a driving cylinder. The driving cylinder is arranged outside the box. A connecting plate is hinged on the telescopic rod of the driving cylinder. The two ends of the rotating shaft are respectively rotatably connected to the left and right side walls of the box. One end of the rotating shaft extends to the outside of the box and is fixedly connected to the connecting plate. The rotating shaft is fixedly connected to the magnet inside the box.

[0013] A fixing hole three is provided on the receiving plate three, a sliding hole is provided on the bottom of the box body corresponding to the installation position of the receiving plate three, a fixing plate three is arranged on the outside of the box body, and a strip-shaped adjustment hole three is provided on the fixing plate three. After the bolt three passes through the fixing hole three and the sliding hole, the upper end of the bolt three is limited by the nut, and the lower end of the bolt three is connected to the fixing plate three by the adjusting bolt.

[0014] A partition plate is arranged above the impurity discharge outlet, an upper air passage is formed between the partition plate and the second material receiving plate, and a lower air passage is formed between the partition plate and the second material receiving plate.

[0015] The partition plate includes a fixed plate 2 and an adjustment plate. The fixed plate 2 is fixedly connected to the rear side wall of the box body. The fixed plate 2 is provided with a fixed hole 2, and the adjustment plate is provided with an adjustment hole 2. The fixed plate 2 and the adjustment plate are connected by two bolts placed in the fixed hole 2 and the adjustment hole 2.

[0016] Both ends of the scraper conveyor are respectively provided with unloading ports.

[0017] Air inlets are respectively arranged on the front and rear side walls of the box body, and each air inlet is respectively installed with a cover plate with an air inlet hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the prior art structure;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model;

[0020] Figure 3 It is an internal cross-sectional view of the utility model;

[0021] Figure 4 This is the installation diagram of the iron removal mechanism;

[0022] Figure 5 for Figure 3 A magnified view of part A;

[0023] The markings in the figure are: box body 1; feed inlet 101; material outlet 102; impurity discharge outlet 103; iron removal mechanism 2; magnet 201; drive cylinder 202; rotating shaft 203; connecting plate 204; scraper conveyor 3; feed inlet 301; drive motor 302; driving shaft 303; sprocket 304; chain 305; scraper 306; material trough 307; feeding roller 4; movable baffle plate 5; movable sealing plate 6; receiving plate 17; adjusting hole 1 701; bolt 1 702; fixing plate 1 8; receiving plate 2 9; receiving plate 3 10; partition plate 11; adjusting hole 2 1101; fixed baffle plate 12; guide plate 13; sliding hole 1301; fixing plate 3 14; adjusting hole 3 1401; bolt 3 15; fixing plate 2 16; bolt 2 17; adjusting bolt 18; fixing ring 19. DETAILED DESCRIPTION

[0024] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific implementation methods, but the present invention is not limited thereto.

[0025] like Figures 2 to 5 As shown, a debris removal feeder for a pulverizer is composed of a box body 1 and a feeding roller 4. A feed port 101 is provided at the upper end of the box body 1, and a material outlet 102 and a debris removal outlet 103 are provided at the lower end; the box body 1 is composed of a front side wall, a rear side wall, a left side wall and a right side wall. Since the feeder 4 is in a negative pressure state as a whole, a plurality of air inlets are respectively opened on the front side wall and the rear side wall, and a cover plate with an air inlet hole is respectively installed on each air inlet.

[0026] A fixed baffle plate 12 is obliquely arranged between the left and right side walls of the box body 1, and a material dropping channel is formed between the fixed baffle plate 12 and the front side wall. The feeding roller 4 is installed in the material dropping channel close to the fixed baffle plate 12, and an arc groove adapted to the feeding roller 4 is arranged at the lower part of the fixed baffle plate 12. The feeding roller 4 is placed in the arc groove to ensure that the feeding roller 4 rotates while preventing the material from falling between the feeding roller 4 and the arc groove.

[0027] A movable baffle plate 5 and a movable sealing plate 6 (this structure is the prior art) are installed on the upper left of the feeding roller 4. The combination of the movable baffle plate 5 and the movable sealing plate 6 prevents the material from falling without passing through the feeding roller 4.

[0028] A receiving plate 7 is obliquely arranged below the feeding roller 4, and the receiving plate 7 is placed between the left and right side walls of the box body 1. The material falls on the receiving plate 7 as the feeding roller 4 rotates. An L-shaped fixing plate 8 is obliquely installed downward on the front side wall of the box body 1, and the upper end of the fixing plate 8 is fixed to the front side wall of the box body 1. A long strip-shaped adjustment hole 701 is provided on the receiving plate 9, and a fixing hole 1 (here, the fixing hole 1 is a round hole) is provided on the fixing plate 1. The receiving plate 9 and the fixing plate 8 are locked by bolts 702 that penetrate the adjustment hole 701 and the fixing hole 1. The length of the receiving plate 7 extending out of the fixing plate 8 can be adjusted by loosening the nut on the bolt 702.

[0029] A receiving plate 209 is obliquely arranged below the fixed baffle plate 12, and the receiving plate 209 is placed between the left and right side walls of the box body 1. An iron removal mechanism 2 is arranged on the back side of the receiving plate 209. The iron removal mechanism 2 is composed of a magnet 201 and a driving cylinder 202. Specifically, a rotating shaft 203 is passed through the left and right side walls of the box body 1. The lower end of the magnet 201 is fixedly connected to the rotating shaft 203, and the two ends of the rotating shaft 203 are rotatably connected to the left and right side walls respectively; one end of the rotating shaft 203 extends to the box body 1. The outside of the body 1 is fixedly connected to the arc-shaped connecting plate 204, and the other end of the connecting plate 204 is connected to the telescopic rod of the driving cylinder 202. The cylinder body of the driving cylinder 202 is installed on the outside of the box body 1; the driving cylinder 202 drives the telescopic rod to extend, and the telescopic rod drives the rotating shaft 203 to rotate through the connecting plate 204. The magnet 201 flips with the rotating shaft 203 and separates from the receiving plate 29. At this time, the iron slag adsorbed on the receiving plate 29 is no longer affected by the magnetic attraction force and falls along the receiving plate 29.

[0030] A guide plate 13 is obliquely arranged at the bottom of the box body 1 corresponding to the top of the impurity discharge outlet, and a receiving plate 3 10 is arranged on the upper surface of the guide plate 13. Specifically, a long strip sliding hole 1301 is opened on the guide plate 13, and a fixing hole 3 (the fixing hole 3 here is also a circular hole) is opened on the receiving plate 3 10. A fixing plate 3 14 is vertically welded to the bottom of the guide plate 13, and an adjusting hole 3 1401 is also opened on the fixing plate 3 14. The receiving plate 3 10 is placed on the guide plate 13. After adjusting the length of the upper end of the receiving plate 3 10 extending out of the guide plate 13, the receiving plate 3 10 and the guide plate 13 are locked by bolts 3 15, wherein the upper end of the bolt 3 15 penetrates the guide plate 13 and the receiving plate 3 10, and is locked by a nut above the receiving plate 3 10; a fixing ring is arranged at the lower end of the bolt 3 15, and one end of the adjusting bolt 18 penetrates the fixing ring and the adjusting hole 3 1401 and is locked by a nut.

[0031] In this embodiment, receiving plate 1 7 , receiving plate 2 9 and receiving plate 3 10 are arranged in an S shape, and the material falls from receiving plate 1 7 to receiving plate 2 9 , the iron slag is adsorbed on receiving plate 2 9 , the material and stones after iron removal fall along receiving plate 2 9 , the stones fall on receiving plate 3 10 , and the material after iron and stone removal is discharged from material outlet 102 .

[0032] In this embodiment, the ends of the receiving plates 1 7 and 3 10 are slightly bent upward, and the receiving end of the receiving plate 3 10 is placed on the left side of the receiving plate 2 9 to ensure that the stones and iron slag of the receiving plate 2 9 can fall onto the receiving plate 3 10.

[0033] A scraper conveyor 3 is installed at the bottom of the impurity discharge outlet 103 . The scraper conveyor 3 is powered by a driving motor. Both ends of the scraper driver 3 are respectively provided with discharge ports 301 .

[0034] After the iron slag, stones, etc. at the impurity discharge outlet 103 fall on the scraper conveyor 3, they are discharged from the discharge port 301 on one side of the scraper conveyor 3. When foreign objects such as stones get stuck on the scraper, the drive motor is controlled to rotate in the reverse direction to achieve reverse impurity discharge of the scraper conveyor 301, eliminating the motor overload phenomenon caused by the scraper getting stuck, and effectively protecting the motor.

[0035] In this embodiment, a partition plate 11 is provided above the impurity discharge outlet 103, and the partition plate 11 is connected to the inner wall of the box body 1 through a second fixing plate 16. A 16 is provided on the partition plate 11, and a second fixing hole (the second fixing hole is also a circular hole) is provided on the second fixing plate 16. The partition plate 11 is connected to the second fixing plate 16 through a bolt 17 placed in the second adjusting hole 1101 and the second fixing hole.

[0036] The partition plate 11 is placed between the left and right side walls of the box body 1. The partition plate 11 divides the air inlet channel on the back side of the fixed baffle plate 12 into two parts, an upper air passage is formed between the partition plate 11 and the receiving plate 2 9, which is used to blow the material in the falling material on the receiving plate 2 9 into the material outlet 102, and a lower air passage is formed between the partition plate 11 and the receiving plate 3 10, which is used to blow the material mixed in the stones back to the material outlet 102.

[0037] When the device is feeding, the material enters from the feed port 101 on the top of the box body 1, and the feeding roller 4 rotates counterclockwise to make the material fall on the receiving plate 1 7. The material flows along the receiving plate 1 7 and passes through the receiving plate 2 9, where the iron impurities are adsorbed on the receiving plate 2 9 under the magnetic force of the high magnet. The driving cylinder 202 is opened at fixed intervals, and after the magnet 201 is separated from the receiving plate 2 9, the iron impurities adsorbed on the receiving plate 2 9 fall freely onto the receiving plate 3 10; the rest of the material continues to roll downward and passes through the receiving plate 3 10. Under the action of the wind channel, since the feed has a lighter specific gravity and is greatly affected by the wind, its original movement trajectory is changed. Most of the feed is blown into the material outlet 102 and enters the crusher for crushing, while the heavier stones are less affected by the wind and continue to do inertial free fall motion, falling along the receiving plate three 10, and falling into the scraper conveyor 3 through the discharge outlet 103 together with the iron impurities, while a small part of the material that falls on the receiving plate three 10 with the stones is blown back to the material outlet 103 under the action of the lower wind channel.

[0038] The scraper conveyor 3 is composed of a trough 307, a driving motor 302, a driving shaft 303, a sprocket 304 and a chain 305. The bottom ends of the trough 307 are respectively provided with a discharge port 301. A sprocket 304 is rotatably installed at each end of the trough 307 of the scraper conveyor. The two sprockets 304 are connected by a chain 305, one of which is fixed to the driving shaft 303. The input end of the driving shaft 303 is connected to the driving motor 302. The driving motor 302 drives the driving shaft 303 to rotate, and the scraper 306 installed on the chain 305 moves through the movement of the sprocket 304 and the chain 305. The lower end of the scraper 306 of the lower layer scrapes the impurities to the discharge port 301 for discharge. When foreign matter gets stuck on the scraper, the driving motor 302 will alarm for current overload, and the current will be reversed through the PLC controller to achieve reverse impurity removal of the scraper conveyor 3, avoid overload and burning of the driving motor 302, extend the service life of the driving motor 302, and reduce maintenance costs.

[0039] This feeder can discharge iron impurities and stones from one discharge port. Workers can remove impurities at once without having to climb up, avoiding the need to remove two types of impurities separately, reducing labor intensity, and eliminating the potential safety hazards caused by climbing. The scraper conveyor with two unique discharge port structures can discharge impurities, and the PLC controller can be used to control the forward and reverse rotation of the motor to achieve the scraper conveyor's changing direction when encountering strong resistance, thereby reducing the failure rate of the drive motor being overloaded and burned, and reducing maintenance costs. It can convey impurities without stopping the machine, ensuring that normal production needs are met and improving production efficiency.

[0040] Finally, it should be noted that the above-listed examples are only preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and modifications fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A debris removal feeder for a pulverizer, comprising a box body and a feeding roller, wherein the upper end of the box body is provided with a feeding port, the lower end is provided with a material outlet and a debris removal outlet, a fixed baffle plate is provided obliquely inside the box body, a material drop channel is formed between the fixed baffle plate and the front side wall of the box body, and the feeding roller is installed in the material drop channel close to the fixed baffle plate, characterized in that: A receiving plate 1 is arranged on the front side wall of the box body at an angle downward, and the receiving plate 1 is placed below the feeding roller. A receiving plate 2 is arranged below the fixed baffle plate, and an iron removal mechanism is arranged on the back side of the receiving plate 2. A receiving plate 3 is arranged at an angle on the top of the debris discharge outlet, and the receiving plate 1, the receiving plate 2 and the receiving plate 3 are arranged in an S shape; a scraper conveyor is arranged at the bottom of the debris discharge outlet.

2. The impurity removal feeder for a pulverizer according to claim 1, characterized in that: The receiving plate 1 is connected to the front side wall of the box body through the fixing plate 1. The receiving plate 1 is provided with an adjusting hole 1, and the fixing plate is provided with a fixing hole. The receiving plate 1 and the fixing plate 1 are locked by a bolt 1 penetrating the adjusting hole 1 and the fixing hole 1.

3. The impurity removal feeder for a pulverizer according to claim 1, characterized in that: The iron removal mechanism includes a magnet and a driving cylinder. The driving cylinder is arranged outside the box. A connecting plate is hinged on the telescopic rod of the driving cylinder. The two ends of the rotating shaft are respectively rotatably connected to the left and right side walls of the box. One end of the rotating shaft extends to the outside of the box and is fixedly connected to the connecting plate. The rotating shaft is fixedly connected to the magnet inside the box.

4. The impurity removal feeder for a pulverizer according to claim 1, characterized in that: A fixing hole three is provided on the receiving plate three, a sliding hole is provided on the bottom of the box body corresponding to the installation position of the receiving plate three, a fixing plate three is arranged on the outside of the box body, and a strip-shaped adjustment hole three is provided on the fixing plate three. After the bolt three passes through the fixing hole three and the sliding hole, the upper end of the bolt three is limited by the nut, and the lower end of the bolt three is connected to the fixing plate three by the adjusting bolt.

5. The impurity removal feeder for a pulverizer according to claim 1, characterized in that: A partition plate is arranged above the impurity discharge outlet, an upper air passage is formed between the partition plate and the second material receiving plate, and a lower air passage is formed between the partition plate and the second material receiving plate.

6. The impurity removal feeder for a pulverizer according to claim 5, characterized in that: The partition plate includes a fixed plate 2 and an adjustment plate. The fixed plate 2 is fixedly connected to the rear side wall of the box body. The fixed plate 2 is provided with a fixed hole 2, and the adjustment plate is provided with an adjustment hole 2. The fixed plate 2 and the adjustment plate are connected by two bolts placed in the fixed hole 2 and the adjustment hole 2.

7. The impurity removal feeder for a pulverizer according to claim 1, characterized in that: Both ends of the scraper conveyor are respectively provided with unloading ports.

8. The impurity removal feeder for a pulverizer according to any one of claims 1 to 7, characterized in that: Air inlets are respectively arranged on the front and rear side walls of the box body, and each air inlet is respectively installed with a cover plate with an air inlet hole.

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