Powdered feed conveying device

Abstract

The present invention belongs to the field of powdered feed conveying devices, specifically a powdered feed conveying device, comprising a closed box, a feeding end is arranged on the closed box, a conveying mechanism is arranged in the closed box, a discharge cover is arranged at the bottom of the closed box, the conveying mechanism comprises two sets of transmission shafts, the transmission shafts are rotatably installed in the closed box, and a conveyor belt is surrounded by the two sets of transmission shafts. A plurality of scrapers are arranged on the outer ring of the conveyor belt. Since the whole process of feed conveying is in the closed box, it is prevented that the lifted feed crumbs are scattered into the surrounding environment. Secondly, in the process of feed conveying, the end of the scraper slides against the inner wall of the closed box. The scraper not only scrapes off the feed crumbs attached to the inner wall of the closed box, but also isolates the inside of the closed box, so that air cannot circulate in the closed box. On the one hand, it can suppress the feed crumbs in the closed box from being lifted up, and on the other hand, it prevents the lifted feed crumbs in the box in the previous set of processes from entering the closed box.

Description

Technical Field

[0001] The invention belongs to the field of powdered feed conveying devices, in particular to a powdered feed conveying device. Background Art

[0002] The work of feed processors includes receiving, cleaning, storing, crushing, batching, mixing, conditioning, expanding, granulating, extruding, drying, crushing, screening, liquid adding and spraying, packaging, ventilation and dust removal, pneumatic conveying and other links of raw materials. The feed needs to be transported through conveying devices of different structures after passing through each link of processing, so as to ensure that the feed processing technology can be carried out continuously.

[0003] The patent with publication number CN218595373U discloses a powder feed drying conveyor, including a box body, a conveyor belt, a bracket, a funnel, an inner barrel, and two groups of heating plates. The upper end surface of the box body is fixedly connected to a motor, the inner barrel is fixedly installed on the inner wall of the box body, and the two groups of heating plates are respectively arranged on the left and right sides of the outer curved surface of the inner barrel. The end of the output shaft of the motor is fixedly connected to a rotating shaft, and the lower end of the rotating shaft is rotatably connected to a disc, and the lower end surface of the disc is fixedly connected to a fixing rod, and the rear side of the upper end surface of the fixing rod is fixedly connected to the lower end surface of the box body, and the outer curved surface of the rotating shaft is fixedly connected to a stirring blade. The powder feed is dispersed by the heating plate, rotating disk, stirring blade and other structures, and dried by the heating plate, so that the device can dry the powder feed more comprehensively, solve the problem of insufficient drying of the powder feed, and improve the practicality of the device.

[0004] In the above scheme, the feed is fed into the space between the turntable and the disc through the discharge port, and the feed between the turntable and the disc is fed into the conveyor belt through the rotation of the turntable. Since the feed is mixed with debris, and the debris after drying is light in weight and small in size, the dried feed is directly conveyed by the conveyor belt. The debris in the feed is easily affected by the flow of external air, causing dust. The dust not only causes waste of feed, but also affects the air quality and easily causes respiratory diseases in workers. For this reason, the present invention provides a powdered feed conveying device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a powder feed conveying device described in the present invention comprises a closed box, a feeding end is arranged on the closed box, a conveying mechanism is arranged in the closed box, a discharge cover is arranged at the bottom of the closed box, the conveying mechanism comprises two sets of transmission shafts, the transmission shafts are rotatably installed in the closed box, a conveyor belt is wound around the two sets of transmission shafts, a plurality of scrapers are arranged on the outer ring of the conveyor belt, and the scrapers and the conveyor belt are integrally formed;

[0007] Since the entire process of feed transportation is carried out in a closed box, the raised feed crumbs are prevented from floating into the surrounding environment. Secondly, during the feed transportation process, the end of the scraper slides along the inner wall of the closed box. The scraper not only scrapes off the feed crumbs attached to the inner wall of the closed box, but also isolates the inside of the closed box to prevent air from circulating in the closed box. On the one hand, it can inhibit the feed crumbs in the closed box from being raised, and on the other hand, it prevents the raised feed crumbs in the box in the previous set of processes from entering the closed box.

[0008] Preferably, a cleaning mechanism for cleaning the conveyor belt is provided in the discharge cover, and the cleaning mechanism includes a fixed column, the fixed column is fixedly installed in the discharge cover, a brush body movably sleeved on the fixed column, a reciprocating screw rotatably installed in one end of the fixed column, a movable plate, the movable plate is sleeved on the reciprocating screw, two groups of guide columns fixedly connected at both ends of the movable plate, and two groups of through holes are symmetrically opened on one side of the discharge cover, and the guide columns are movably inserted into the through holes;

[0009] During the continuous back-and-forth movement of the guide post and the brush body, the guide post will slide along the through hole, and the brush body will slide along the fixed post. The setting of the through hole and the fixed post guides the movement of the brush body.

[0010] Preferably, the brush body comprises a roller brush, which is movably sleeved on a fixed column, a feed sleeve fixedly connected to one end of the roller brush, a movable sleeve, the feed sleeve rotatably sleeved on the movable sleeve, and the movable sleeve rotatably sleeved on the fixed column, a first toothed disc rotatably sleeved on the movable sleeve, one end of the guide column is fixedly connected to the first toothed disc, a ratchet is arranged in the movable sleeve, four groups of pawls are clamped on the ratchet, the four groups of pawls are distributed in the feed sleeve at equal angles, and the pawls are hinged to the feed sleeve, two groups of cams are arranged on the inner ring of the movable sleeve, two groups of spiral grooves are arranged on the fixed column, the cams are located in the spiral grooves, the cams are driven along the spiral grooves to rotate the movable sleeve, and a plurality of groups of levers for cleaning the roller brush are arranged in the discharge cover;

[0011] The roller brush moves back and forth horizontally once under the conveyor belt, and the roller brush will rotate a certain angle, so that the position of the roller brush used to clean the conveyor belt and the scraper can be replaced, and the feed crumbs on the roller brush can be cleaned through the lever, thereby ensuring the good effect of the brush body in cleaning the feed crumbs.

[0012] Preferably, the cleaning mechanism further comprises a second toothed disc, the second toothed disc engages with the first toothed disc, a spring is arranged on one side of the second toothed disc, the second toothed disc is sleeved on the feed sleeve, and four groups of guide blocks are arranged on the inner ring of the second toothed disc, four groups of guide grooves are arranged on the outer ring of the feed sleeve, the guide blocks are slidably connected to the guide blocks, a limiting groove for placing the spring is arranged at one end of the roller brush, and the spring is located between the limiting groove and the second toothed disc;

[0013] The first toothed disc is engaged with the second toothed disc again, and the engaging force between the first toothed disc and the second toothed disc ensures that the roller brush rotates at the same angle each time, so that the outer ring of the roller brush contacts the conveyor belt and the scraper more evenly.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. Since the entire process of feed transportation is carried out in a closed box, the raised feed crumbs are prevented from being scattered into the surrounding environment. Secondly, during the feed transportation process, the end of the scraper slides along the inner wall of the closed box. The scraper not only scrapes off the feed crumbs attached to the inner wall of the closed box, but also isolates the inside of the closed box, so that air cannot circulate in the closed box. On the one hand, it can inhibit the feed crumbs in the closed box from being raised, and on the other hand, it prevents the raised feed crumbs in the box in the previous set of processes from entering the closed box.

[0016] 2. During the feed conveying process, the transmission conveyor belt and scraper will produce friction with the brush body, and the reciprocating screw is driven by the motor to rotate. As the reciprocating screw rotates, the movable plate together with the guide column and the brush body will move back and forth laterally under the conveyor belt, thereby increasing a lateral back-and-forth friction between the conveyor belt and the scraper, increasing the cleaning force on the conveyor belt and the scraper, and cleaning the feed crumbs attached to the conveyor belt and the scraper, ensuring that the scraper has a good cleaning effect on the inner wall of the closed box. Secondly, during the continuous back-and-forth movement of the guide column and the brush body, the guide column will slide along the through hole, and the brush body will slide along the fixed column. The setting of the through hole and the fixed column guides the movement of the brush body.

[0017] 3. When the movable plate, together with the guide column and the brush body, moves back and forth horizontally under the conveyor belt, the guide column drives the first toothed disc, and the first toothed disc drives the movable sleeve, together with the feed sleeve and the roller brush, to move back and forth along the fixed column, and the feed crumbs on the conveyor belt and the scraper are cleaned up by the roller brush. During the movement, the cam in the movable sleeve will slide along the spiral groove, and under the guidance of the spiral groove, the movable sleeve together with the internal ratchet will rotate. Since the teeth of the ratchet wheel abut against the pawl, the pawl drives the feed sleeve together with the roller brush to rotate, so that the contact surface of the roller brush with the conveyor belt and the scraper is replaced, until the cam moves back along the spiral groove. When moving back, the teeth of the ratchet wheel cannot abut against the pawl, so that the roller brush cannot rotate back. At the same time, during the rotation of the roller brush, several groups of levers in the discharge cover will push away the clustered fiber filaments on the roller brush, so that the feed crumbs can be separated from the roller brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the structure of the present invention.

[0020] Figure 2 It is a schematic cross-sectional view of the structure of the present invention.

[0021] Figure 3 It is a cross-sectional schematic diagram of the closed box, conveyor belt, discharge cover and cleaning mechanism assembly of the present invention.

[0022] Figure 4 It is a schematic diagram of the combination of the fixed column, the brush body, the movable plate and the guide column of the present invention.

[0023] Figure 5 The figure is a schematic diagram of the cross-section of the brush body and the fixing column assembly of the present invention.

[0024] Figure 6 It is a schematic diagram of the feed sleeve, movable sleeve and second gear disc assembly of the present invention.

[0025] Figure 7 It is a cross-sectional schematic diagram of the feed sleeve and the movable sleeve combination of the present invention.

[0026] Figure 8 It is a schematic diagram of a cross-sectional feed sleeve, a cross-sectional movable sleeve, and a fixed column assembly of the present invention.

[0027] In the figure: 1. closed box; 2. feed end; 3. conveying mechanism; 4. discharge cover; 401. through hole; 402. lever; 5. cleaning mechanism; 301. transmission shaft; 302. conveyor belt; 3021. scraper; 501. fixed column; 5011. spiral groove; 502. brush body; 503. reciprocating screw; 504. movable plate; 505. guide column; 5021. roller brush; 211. limit groove; 5022. feed sleeve; 221. guide groove; 5023. movable sleeve; 231. ratchet; 232. pawl; 233. cam; 5024. first toothed disc; 5025. second toothed disc; 251. guide block; 5026. spring. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Embodiment 1

[0029] like Figure 1 and Figure 2 As shown, a powdered feed conveying device described in an embodiment of the present invention includes a closed box 1, a feed end 2 is arranged on the closed box 1, a conveying mechanism 3 is arranged in the closed box 1, a discharge cover 4 is arranged at the bottom of the closed box 1, the conveying mechanism 3 includes two groups of transmission shafts 301, the transmission shafts 301 are rotatably installed in the closed box 1, and a conveyor belt 302 is wound around the two groups of transmission shafts 301. A plurality of scrapers 3021 are arranged on the outer ring of the conveyor belt 302, and the scrapers 3021 are integrally formed with the conveyor belt 302.

[0030] Specifically, attached Figure 2 The direction indicated by the middle arrow is the conveying direction of the conveyor belt 302. The scraper 3021 and the conveyor belt 302 are both made of rubber. The feed end 2 is connected to the box body of a powder feed drying conveyor with publication number CN218595373U by bolts. Before the feed in the box body enters the closed box body 1, a group of transmission shafts 301 are driven to rotate by a group of motors. As the transmission shaft 301 rotates, several groups of scrapers 3021 will make circular motions around the two groups of transmission shafts 301 along with the conveyor belt 302, and the ends of the scrapers 3021 slide against the inner wall of the closed box body 1. Therefore, after the feed in the box body enters the closed box body 1, the feed directly falls onto the conveyor belt 302, and the conveyor belt 302 and the scraper The cooperation of 3021 transfers the feed to the discharge hood 4, and the feed flows along the inner cavity of the discharge hood 4 to the device of the next set of processes. Compared with the prior art, since the entire process of feed transportation is in the closed box 1, the raised feed crumbs are prevented from floating into the surrounding environment. Secondly, in the process of feed transportation, the end of the scraper 3021 slides along the inner wall of the closed box 1. The scraper 3021 not only scrapes off the feed crumbs attached to the inner wall of the closed box 1, but also isolates the inside of the closed box 1, so that air cannot circulate in the closed box 1. On the one hand, it can suppress the feed crumbs in the closed box 1 from being raised, and on the other hand, it prevents the raised feed crumbs in the box in the previous set of processes from entering the closed box 1.

[0031] like Figure 3 As shown, a cleaning mechanism 5 for cleaning the conveyor belt 302 is provided in the discharge hood 4, and the cleaning mechanism 5 includes a fixed column 501, the fixed column 501 is fixedly installed in the discharge hood 4, a movable sleeve 5023 is mounted on the fixed column 501, a reciprocating screw 503 rotatably installed in one end of the fixed column 501, a movable plate 504, the movable plate 504 is sleeved on the reciprocating screw 503, two groups of guide columns 505 fixedly connected at both ends of the movable plate 504, and two groups of through holes 401 are symmetrically opened on one side of the discharge hood 4, and the guide columns 505 are movably inserted into the through holes 401.

[0032] Specifically, after the scraper 3021 scrapes off the feed crumbs attached to the inner wall of the closed box 1, the scraped feed crumbs will be transferred to the discharge cover 4 along with the scraper 3021. However, a small amount of feed crumbs attached to the scraper 3021 cannot fall into the discharge cover 4. As the scraper 3021 accumulates feed crumbs, it will affect the effect of the scraper 3021 in cleaning the inner wall of the closed box 1. Therefore, during the feed conveying process, the transmission conveyor belt 302 and the scraper 3021 will generate friction with the brush body 502, and the reciprocating screw 503 is driven by the motor to rotate. As the reciprocating screw 503 rotates, the movable plate 504 together with the guide column 505 and the brush body 502 It will move back and forth laterally under the conveyor belt 302, thereby increasing a horizontal back and forth friction force between the conveyor belt 302 and the scraper 3021, increasing the cleaning force on the conveyor belt 302 and the scraper 3021, and cleaning the feed crumbs attached to the conveyor belt 302 and the scraper 3021, ensuring that the scraper 3021 has a good cleaning effect on the inner wall of the closed box 1. Secondly, during the continuous back and forth movement of the guide column 505 and the brush body 502, the guide column 505 will slide along the through hole 401, and the brush body 502 will slide along the fixed column 501. The setting of the through hole 401 and the fixed column 501 guides the movement of the brush body 502. Embodiment 2

[0033] like Figures 4 to 8 As shown, in contrast to Example 1, another embodiment of the present invention is as follows: the brush body 502 includes a roller brush 5021, a movable sleeve 5023 of the roller brush 5021 is mounted on a fixed column 501, a feed sleeve 5022 fixedly connected to one end of the roller brush 5021, a movable sleeve 5023, the feed sleeve 5022 is rotatably sleeved on the movable sleeve 5023, and the movable sleeve 5023 is rotatably sleeved on the fixed column 501, a first toothed disc 5024 rotatably sleeved on the movable sleeve 5023, one end of the guide column 505 is fixedly connected to the first toothed disc 5024, and the movable sleeve 5023 is rotatably sleeved on the fixed column 501. A ratchet 231 is arranged in the sleeve 5023, and four groups of pawls 232 are clamped on the ratchet 231. The four groups of pawls 232 are distributed at equal angles in the feed sleeve 5022, and the pawls 232 are hinged to the feed sleeve 5022. Two groups of cams 233 are arranged on the inner ring of the movable sleeve 5023, and two groups of spiral grooves 5011 are arranged on the fixed column 501. The cam 233 is located in the spiral groove 5011, and the cam 233 is driven along the spiral groove 5011 to make the movable sleeve 5023 rotate. Several groups of levers 402 for cleaning the roller brush 5021 are arranged in the discharge cover 4.

[0034] Specifically, the end of the lever 402 is made of a magnet, and the end of the lever 402 has a certain adsorption force on the pawl 232. In the process of the brush body 502 cleaning the feed crumbs on the conveyor belt 302 and the scraper 3021, the feed crumbs will fall into the fiber filaments of the brush body 502. As the feed crumbs accumulated on the brush body 502 increase, the effect of the brush body 502 cleaning the feed crumbs on the conveyor belt 302 and the scraper 3021 will become worse and worse. Therefore, the movable plate 504 together with the guide column 505 and the brush body 502 are During the horizontal back and forth movement below the conveyor belt 302, the guide column 505 drives the first toothed disc 5024, and the first toothed disc 5024 drives the movable sleeve 5023 together with the feed sleeve 5022 and the roller brush 5021 to move back and forth along the fixed column 501, and the feed scraps on the conveyor belt 302 and the scraper 3021 are cleaned by the roller brush 5021. During the movement, the convex shaft 233 in the movable sleeve 5023 will slide along the spiral groove 5011, and under the guidance of the spiral groove 5011, the movable sleeve 5023 together with the internal spurs will be moved back and forth. The wheel 231 rotates, and the teeth of the ratchet wheel 231 abut against the pawl 232, so that the pawl 232 drives the feed sleeve 5022 and the roller brush 5021 to rotate together, so that the contact surface of the roller brush 5021, the conveyor belt 302, and the scraper 3021 is replaced, until the convex shaft 233 moves back along the spiral groove 5011. When moving back, the teeth of the ratchet wheel 231 cannot abut against the pawl 232, so that the roller brush 5021 cannot rotate back. At the same time, during the rotation of the roller brush 5021, the material discharge cover 4 A plurality of groups of levers 402 will push away the fiber filaments clustered on the roller brush 5021 so that the feed crumbs can be separated from the roller brush 5021. Therefore, the roller brush 5021 moves back and forth horizontally once under the conveyor belt 302, and the roller brush 5021 will rotate a certain angle, so that the position of the roller brush 5021 used for cleaning the conveyor belt 302 and the scraper 3021 is replaced, and the feed crumbs on the roller brush 5021 are cleaned by the levers 402, thereby ensuring a good effect of the brush body 502 in cleaning the feed crumbs.

[0035] Furthermore, the cleaning mechanism 5 also includes a second toothed disc 5025, which engages with the first toothed disc 5024, and a spring 5026 is arranged on one side of the second toothed disc 5025. The second toothed disc 5025 is sleeved on the feed sleeve 5022, and four groups of guide blocks 251 are arranged on the inner ring of the second toothed disc 5025, and four groups of guide grooves 221 are opened on the outer ring of the feed sleeve 5022. The guide blocks 251 are slidably connected to the guide blocks 251, and a limiting groove 211 for placing the spring 5026 is opened at one end of the roller brush 5021, and the spring 5026 is located between the limiting groove 211 and the second toothed disc 5025.

[0036] Specifically, when the above-mentioned roller brush 5021 rotates, the feed sleeve 5022 rotates the second toothed disc 5025 together through the cooperation of the guide block 251 and the guide groove 221. Since the first toothed disc 5024 cannot rotate, during the rotation of the second toothed disc 5025, the teeth on the second toothed disc 5025 are squeezed by the teeth on the first toothed disc 5024, so that the second toothed disc 5025 moves toward the roller brush 5021. At the same time, the second toothed disc 5025 drives the guide block 251 to slide along the guide groove 221, and the second toothed disc 5025 compresses the spring 5026 until the first toothed disc 5024 and the second toothed disc 5025 are engaged again under the action of the rebound force of the spring 5026. The engaging force of the first toothed disc 5024 and the second toothed disc 5025 ensures that the roller brush 5021 rotates by the same angle each time, so that the outer ring of the roller brush 5021 contacts the conveyor belt 302 and the scraper 3021 more evenly.

[0037] Working principle: before the feed in the box enters the sealed box 1, a group of motors drives a group of transmission shafts 301 to rotate. As the transmission shafts 301 rotate, several groups of scrapers 3021 will make circular motions around the two groups of transmission shafts 301 along with the conveyor belts 302, and the ends of the scrapers 3021 slide along the inner wall of the sealed box 1. Therefore, after the feed in the box enters the sealed box 1, the feed directly falls on the conveyor belt 302, and the conveyor belt 302 and the scrapers 3021 cooperate to convey the feed to the discharge cover 4, and the feed flows along the inner cavity of the discharge cover 4 to the device of the next process. In the process of feeding, the conveyor belt 302 and the scraper 3021 will generate friction with the brush body 502, and the reciprocating screw 503 will be driven by the motor to rotate. As the reciprocating screw 503 rotates, the movable plate 504 together with the guide column 505 and the brush body 502 will move back and forth laterally under the conveyor belt 302, thereby increasing a lateral back and forth friction force on the conveyor belt 302 and the scraper 3021, thereby increasing the cleaning force on the conveyor belt 302 and the scraper 3021, and achieving the goal of cleaning the feed crumbs attached to the conveyor belt 302 and the scraper 3021;

[0038] During the horizontal back and forth movement of the movable plate 504, the guide post 505 and the brush body 502 below the conveyor belt 302, the guide post 505 drives the first toothed disc 5024, and the first toothed disc 5024 drives the movable sleeve 5023, the feed sleeve 5022 and the roller brush 5021 to move back and forth along the fixed post 501, and the feed scraps on the conveyor belt 302 and the scraper 3021 are cleaned by the roller brush 5021. During the movement, the convex shaft 233 in the movable sleeve 5023 slides along the spiral groove 5011, and under the guidance of the spiral groove 5011, the movable sleeve 5023 rotates together with the internal ratchet 231. The teeth of the ratchet 231 abut against the pawl 232, so that the pawl 232 drives the feed sleeve 5022 to rotate together with the roller brush 5021, so that the contact surface of the roller brush 5021 with the conveyor belt 302 and the scraper 3021 is replaced, until the convex shaft 233 moves back along the spiral groove 5011. When moving back, the teeth of the ratchet 231 cannot abut against the pawl 232, so that the roller brush 5021 cannot rotate back. At the same time, during the rotation of the roller brush 5021, the plurality of groups of levers 402 in the discharge cover 4 will push away the fiber filaments clustered on the roller brush 5021, so that the feed scraps can be separated from the roller brush 5021.

[0039] When the roller brush 5021 rotates, the feed sleeve 5022 rotates the second toothed disc 5025 together through the cooperation of the guide block 251 and the guide groove 221. Since the first toothed disc 5024 cannot rotate, during the rotation of the second toothed disc 5025, the teeth on the second toothed disc 5025 are squeezed by the teeth on the first toothed disc 5024, causing the second toothed disc 5025 to move toward the roller brush 5021. At the same time, the second toothed disc 5025 drives the guide block 251 to slide along the guide groove 221, and the second toothed disc 5025 compresses the spring 5026 until the first toothed disc 5024 and the second toothed disc 5025 are engaged again under the action of the rebound force of the spring 5026. The engagement force between the first toothed disc 5024 and the second toothed disc 5025 ensures that the roller brush 5021 rotates by the same angle each time.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A powdered feed conveying device, comprising a closed box (1), characterized in that: The sealed box (1) is provided with a feeding end (2), a conveying mechanism (3) is provided inside the sealed box (1), and a discharge cover (4) is provided at the bottom of the sealed box (1); The transmission mechanism (3) comprises: Two sets of transmission shafts (301), wherein the transmission shafts (301) are rotatably mounted in the sealed box (1); A conveyor belt (302) wound around the two sets of transmission shafts (301); A plurality of groups of scrapers (3021) are provided on the outer ring of the conveyor belt (302), and the scrapers (3021) and the conveyor belt (302) are integrally formed; A cleaning mechanism (5) for cleaning the conveyor belt (302) is arranged in the discharge cover (4), and the cleaning mechanism (5) comprises: A fixed column (501), wherein the fixed column (501) is fixedly installed in the discharge cover (4); A brush body (502) movably mounted on the fixed column (501); A reciprocating screw (503) rotatably mounted in one end of the fixed column (501); A movable plate (504), wherein the movable plate (504) is sleeved on the reciprocating screw (503); Two groups of guide pillars (505) fixedly connected at both ends of the movable plate (504); Two groups of through holes (401) are symmetrically opened on one side of the discharge cover (4), and the guide pillars (505) are movably plugged into the through holes (401); During the feed conveying process, the transmission conveyor belt (302) and the scraper (3021) will generate friction with the brush body (502), and the reciprocating screw (503) will be driven to rotate by the motor. As the reciprocating screw (503) rotates, the movable plate (504) together with the guide column (505) and the brush body (502) will move back and forth laterally under the conveyor belt (302), thereby increasing a lateral back and forth friction force on the conveyor belt (302) and the scraper (3021), thereby increasing the cleaning force on the conveyor belt (302) and the scraper (3021), thereby achieving the goal of cleaning the feed crumbs attached to the conveyor belt (302) and the scraper (3021), and ensuring that the scraper (3021) has a good cleaning effect on the inner wall of the closed box (1); The brush body (502) comprises: A roller brush (5021), wherein the roller brush (5021) is movably mounted on the fixed column (501); A feeding sleeve (5022) fixedly connected to one end of the roller brush (5021); A movable sleeve (5023), the feed sleeve (5022) is rotatably sleeved on the movable sleeve (5023), and the movable sleeve (5023) is rotatably sleeved on the fixed column (501); The first toothed disc (5024) sleeved on the movable sleeve (5023) is rotated, and one end of the guide column (505) is fixedly connected to the first toothed disc (5024); A ratchet (231) is arranged inside the movable sleeve (5023); Four groups of ratchet pawls (232) are clamped on the ratchet wheel (231), the four groups of ratchet pawls (232) are distributed at equal angles in the feed sleeve (5022), and the ratchet pawls (232) are hinged to the feed sleeve (5022); Two groups of convex shafts (233) are arranged on the inner ring of the movable sleeve (5023), two groups of spiral grooves (5011) are arranged on the fixed column (501), and the convex shafts (233) are located in the spiral grooves (5011); The convex shaft (233) is driven along the spiral groove (5011) to rotate the movable sleeve (5023); a plurality of groups of levers (402) for cleaning the roller brush (5021) are arranged in the discharge cover (4); The cleaning mechanism (5) further comprises: A second toothed disc (5025), the second toothed disc (5025) engaging with the first toothed disc (5024); A spring (5026) is arranged on one side of the second toothed disc (5025).

2. A powdered feed conveying device according to claim 1, characterized in that: The second toothed disc (5025) is sleeved on the feed sleeve (5022), and four groups of guide blocks (251) are arranged on the inner ring of the second toothed disc (5025), and four groups of guide grooves (221) are opened on the outer ring of the feed sleeve (5022), and the guide blocks (251) are slidably connected to the guide grooves (221).

3. A powdered feed conveying device according to claim 2, characterized in that: A limiting groove (211) for accommodating a spring (5026) is provided at one end of the roller brush (5021); the spring (5026) is located between the limiting groove (211) and the second toothed disc (5025).

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