Feeding device for weighing compound fertilizer raw materials

Abstract

The invention provides a feeding device for weighing compound fertilizer raw materials, and belongs to the technical field of compound fertilizer conveying, the feeding device comprises a belt weigher and a hopper, the belt weigher comprises a conveying belt, the hopper is provided with a discharging port, the discharging port is formed by surrounding a first side wall and a second side wall in a staggered mode, the belt weigher is further provided with a buffering mechanism and a cleaning assembly, and the buffering mechanism comprises a buffering piece and a driving device; the buffer piece comprises a buffer plate I and a buffer plate II; an arch breaking head is arranged above the buffer plate I; the cleaning assembly comprises a cleaning plate and an elastic piece connected between the cleaning plate and the second buffer plate. Raw materials in the hopper are preliminarily crushed and shunted through the arch breaking head, the raw materials are secondarily crushed and shunted through the first buffer plate and the second buffer plate, the falling track of the raw materials is changed, the impact force of the raw materials on the belt weigher is reduced, and the conditions of material accumulation and raw material caking in the hopper are reduced; and raw materials adhered to the conveying belt are cleaned through the cleaning plate, so that the weighing accuracy of the belt weigher is improved.

Description

Technical Field

[0001] The invention relates to the technical field of compound fertilizer transportation, and in particular to a feeding device for weighing compound fertilizer raw materials. Background Art

[0002] The preparation of compound fertilizer requires the preparation of a variety of raw materials. Conical hoppers are often provided on belt scales. Before batching, the raw materials fall onto the belt scale through the conical hopper. The belt scale weighs and conveys the raw materials, and then mixes and prepares them. When a large amount of materials are put into the conical hopper at one time, it is easy to block the hopper, and the falling materials will impact the belt scale, and may also adhere to the belt, affecting the weighing effect of the belt scale. The instantaneous impact force generated by the falling materials will have a large impact on the belt scale in a short period of time, which may cause the weighing sensor to instantly read an abnormally high weight value. Since the belt scale calculates the flow rate by measuring the weight of the material and the speed of the belt, the instantaneous impact force will make the calculated flow value in a short period of time too large, thereby affecting the calculated flow rate of the belt scale and causing errors in the later mixing ratio. Secondly, the sudden impact force may cause insufficient friction between the conveyor belt and the roller, causing slippage. Slippage will not only damage the conveyor belt and the roller, but may also cause the tension of the conveyor belt to decrease, causing the conveying speed of the conveyor belt to fluctuate and affect the accuracy of the belt scale weighing.

[0003] The patent document with the announcement number CN116513829B discloses a fertilizer feeding device, including a feed hopper and a conveyor belt. A discharge port is arranged below the feed hopper, and a push rod is slidably connected in the discharge port. Two push plates are hinged at one end of the push rod near the conveyor belt. A positioning part located between the two push plates is fixedly connected at the end of the push rod. Limiting parts are fixedly connected on both sides of the push rod, and the push plates are respectively located between the positioning part and the limiting part. The push rod slides in a direction perpendicular to the conveyor belt. When the push rod is lifted, the two push plates approach each other. The positioning part limits the two push plates to fit each other. When the push rod approaches the conveyor belt, the two push plates are opened due to the resistance of the fertilizer. The two push plates are reversed and contact the adjusting bolts on the positioning part. The opened push plates increase the area of ​​the fertilizer pushed by the push rod, and to a certain extent, improve the dredging effect of the fertilizer at the discharge port. However, the push rod and the push plate of the fertilizer feeding device can only clear part of the material in the discharge port. The material in the hopper wall near the discharge port does not contact the push plate, and still generates an instant impact force on the conveyor belt, affecting the accuracy of the belt scale. Therefore, it is necessary to develop a compound fertilizer raw material weighing feeding device to solve the technical problems in the prior art that the raw materials generate a large instant impact force on the conveyor belt when they fall and part of the raw materials adhere to the belt. Summary of the invention

[0004] In view of this, the present invention provides a feeding device for weighing compound fertilizer raw materials, which solves the technical problem that part of the raw materials will adhere to the belt while solving the large instantaneous impact force on the conveyor belt when the raw materials fall.

[0005] In order to solve the above technical problems, the present invention provides a belt scale and a hopper arranged above the belt scale, the belt scale includes a conveyor belt, the hopper has a discharge port, and the discharge port is formed by staggered side walls 1 and 2, the belt scale is also provided with a buffer mechanism and a cleaning assembly, the buffer mechanism includes a buffer member arranged in the discharge port and capable of contacting with the raw material to change the falling trajectory of the raw material, and a driving device for driving the buffer member to move back and forth; The buffer member comprises a buffer plate 1 and a buffer plate 2 respectively hinged on two side walls 1 of the discharge port; the buffer plate 1 and the buffer plate 2 are arranged in parallel, the buffer plate 1 is arranged between the two buffer plates 2, and the upper ends of the two buffer plates 2 are also respectively abutted against the side walls 2, so that the raw materials can only pass between the two buffer plates 2; a broken arch head is arranged above the buffer plate 1, the broken arch head is prism-shaped, and the buffer plate 1 is fixedly connected to one edge of the broken arch head; The cleaning assembly includes a cleaning plate slidably installed under the second buffer plate, and an elastic member connected between the cleaning plate and the second buffer plate; the sliding direction of the cleaning plate is perpendicular to the movement direction of the conveyor belt, and the trajectory of the cleaning plate driven by the second buffer plate is an arc, so that the cleaning plate can clean the raw materials adhering to the conveyor belt and then transport them through the conveyor belt.

[0006] By adopting the above technical scheme, the broken arch head of the present invention performs preliminary crushing and diversion on the raw materials in the hopper, and the buffer plate 1 and the buffer plate 2 perform secondary crushing and diversion on the raw materials, changing the trajectory of the raw materials falling, not only reducing the impact force of the raw materials on the belt scale, but also reducing the accumulation of materials in the hopper and the agglomeration of raw materials. The raw materials adhering to the conveyor belt are cleaned by the cleaning plate, which improves the accuracy of the belt scale weighing. Specifically, after the raw materials enter the hopper, they fall onto the conveyor belt of the belt scale through the discharge port, and are mixed and prepared after being weighed and conveyed by the belt scale. The driving device drives the buffer plate 1 and the buffer plate 2 to move back and forth, so that the raw materials contact the buffer plate 1 and the buffer plate 2, change the trajectory of the raw materials falling, share the pressure on the middle discharge when unloading, and at the same time, through the reciprocating swing, there is a downward pressure on the raw materials, automatically transfer the materials, and reduce the accumulation of materials. The left and right movement of the buffer plate 1 and the buffer plate 2 collides with the partially agglomerated raw materials, reduces the agglomeration of raw materials, and is beneficial to the accuracy of the ingredients. The buffer plate 1 is also provided with a prismatic arch-breaking head, which swings left and right with the buffer plate 1 to preliminarily divert the raw materials, and the prismatic design helps to increase the contact area between the raw materials and the arch-breaking head, improve the crushing effect of blocky raw materials, and reduce the blockage of the hopper. At the same time, the swing of the buffer plate 2 drives the cleaning plate to swing, and the cleaning plate can scrape the raw materials adhering to the conveyor belt. Since the trajectory of the cleaning plate driven by the buffer plate 2 is an arc, the cleaning plate can scrape the adhering raw materials when it is at the lowest point. When the cleaning plate is far away from the lowest point, the scraped raw materials can be transported by the conveyor belt. The setting of the elastic member makes the cleaning plate and the conveyor belt in elastic contact, reducing the damage of the cleaning plate to the conveyor belt.

[0007] Preferably, the driving device includes a driving roller driven to rotate by the roller of the conveyor belt and a crank-connecting rod mechanism connected to the driving roller; the movement direction of the connecting rod of the crank-connecting rod mechanism is horizontal movement, the lower ends of buffer plate one and buffer plate two are hinged on the first connecting member, and a guide member is fixedly connected to the side of the first connecting member away from buffer plate two, and a guide groove is provided at the end of the connecting rod for pushing the guide member to move, and the guide member can slide in the guide groove in a direction perpendicular to the movement direction of the guide groove, so that the movement trajectory of buffer plate two is an arc.

[0008] By adopting the above technical solution, the roller drives the driving roller to rotate, the driving roller drives the crank-connecting rod mechanism to move, the connecting rod drives the guide groove to move horizontally, and the guide groove drives the guide member and the first connecting member to move horizontally. Since the buffer plate 1 and the buffer plate 2 are both hinged on the side wall 1 and the first connecting member of the discharge port, the guide groove drives the guide member to slide upward while pushing the guide member to move horizontally, so that the movement trajectory of the buffer plate 2 and the buffer plate 1 is arc-shaped, which facilitates the raw materials scraped off by the cleaning plate to be transported by the conveyor belt.

[0009] Preferably, a connecting column is fixedly mounted on the end of the connecting rod, a limiting groove for limiting the connecting column is opened at the lower end of the discharge port, and the connecting column is installed in the limiting groove and can slide horizontally in the limiting groove.

[0010] By adopting the above technical solution, the connecting column slides horizontally in the limit groove. On the one hand, the limit groove can make the movement trajectory of the connecting column horizontal, so that the movement of the connecting rod is also horizontal. On the other hand, the limit groove can also limit the stroke of the horizontal movement of the connecting column.

[0011] Preferably, a slide groove is provided at the lower end of the discharge port above the limiting groove, and the slide groove is used to limit the guide member, and the guide member passes through the slide groove and is installed in the guide groove.

[0012] By adopting the above technical solution, since the first connecting member is arranged inside the discharge port and the guide groove is located outside the discharge port, the guide member passes through the slide groove on the discharge port and is installed in the guide groove. At the same time, the slide groove also limits the distance that the guide member moves left and right.

[0013] Preferably, the driving roller is arranged at the end of the conveyor belt on one side of the discharge port, and the driving roller is wrapped with a flexible pad. The driving roller and the drum are squeezed so that part of the raw material adhering to the conveyor belt adheres to the flexible pad. The cleaning assembly also includes a scraper fixedly installed on the outside of the discharge port close to the driving roller, and the scraper can scrape the raw material on the flexible pad.

[0014] By adopting the above technical scheme, the flexible pad wrapped on the driving roller can, on the one hand, reduce the wear of the driving roller on the conveyor belt; on the other hand, part of the raw materials adhering to the conveyor belt will adhere to the flexible pad after being squeezed by the driving roller and the drum, and will be scraped off by the scraper, thereby reducing the raw materials adhering to the conveyor belt and reducing the cleaning amount of the cleaning plate. After two cleanings, the cleaning effect can be effectively improved.

[0015] Preferably, a second connecting piece is provided in the discharge port, the middle parts of buffer plate 1 and buffer plate 2 are hinged on the second connecting piece, and a material stripping plate is also provided between buffer plate 1 and buffer plate 2, the upper end of the material stripping plate is hinged to the second connecting piece, and the lower end of the material stripping plate is hinged to the first connecting piece.

[0016] By adopting the above technical solution, the first connecting member drives the material stripping plate to move, and also drives the buffer plate one and the buffer plate two to move. The second connecting member provides support for the material stripping plate. The material stripping plate contacts the falling raw materials again, changing the falling trajectory, which is beneficial to reduce the impact force of the raw materials on the belt scale and reduce the accumulation of materials in the hopper and the agglomeration of raw materials.

[0017] Preferably, the height of the material-diverting plate is smaller than the heights of the buffer plate 1 and the buffer plate 2, and the material-diverting plate is spaced apart from the buffer plate 1 or the buffer plate 2.

[0018] By adopting the above technical scheme, the breaking arch head crushes and diverts the raw materials in the hopper once, the buffer plate 1 and the buffer plate 2 are located on the material diverting plate to crush and divert the raw materials for the second time, and the buffer plate 1, the buffer plate 2 and the material diverting plate at the same horizontal position and the material diverting plate crush and divert the raw materials for the third time. After three crushing and diversion, not only the amount of raw materials whose trajectory is changed can be increased, but also the falling trajectory of the raw materials can be changed multiple times, which is beneficial to reduce the impact force of the raw materials on the belt scale and reduce the accumulation of materials and agglomeration of raw materials in the hopper.

[0019] Preferably, the belt scale is also provided with a leveling assembly, which includes a third connecting member fixedly connected to the connecting column in the discharge port, and a leveling plate fixedly connected to the third connecting member. A plurality of leveling plates are spaced apart between buffer plate one or buffer plate two and the material stripping plate, and are used to level the raw materials that fall onto the conveyor belt.

[0020] By adopting the above technical solution, the crank-connecting rod mechanism drives the connecting column to move horizontally, the connecting column drives the third connecting piece to move horizontally, and the connecting piece drives the leveling plate to move horizontally, so that the raw materials falling onto the belt scale are leveled, so that the raw materials can be evenly distributed, and the raw materials on the belt scale are evenly transported, and then the raw materials fall evenly onto another conveying mechanism, thereby improving the batching accuracy of the belt scale. The beneficial effects of the above technical solution of the present invention are as follows: 1. The broken arch head of the present invention performs preliminary crushing and diversion on the raw materials in the hopper, and the buffer plate 1 and the buffer plate 2 perform secondary crushing and diversion on the raw materials, changing the trajectory of the raw materials falling, which not only reduces the impact force of the raw materials on the belt scale, but also reduces the accumulation of materials in the hopper and the agglomeration of raw materials. The raw materials adhering to the conveyor belt are cleaned by the cleaning plate, thereby improving the weighing accuracy of the belt scale.

[0021] 2. The flexible pad wrapped on the driving roller can reduce the wear of the driving roller on the conveyor belt on the one hand. On the other hand, the raw materials adhering to the conveyor belt will be partially adhered to the flexible pad after being squeezed by the driving roller and the drum, and will be scraped off by the scraper, which reduces the raw materials adhering to the conveyor belt and reduces the cleaning amount of the cleaning plate. After two cleanings, the cleaning effect can be effectively improved.

[0022] 3. The breaking arch head crushes and diverts the raw materials in the hopper once, the buffer plate 1 and the buffer plate 2 are located on the shifting plate to crush and divert the raw materials for the second time, and the buffer plate 1, the buffer plate 2 and the portion at the same horizontal position of the shifting plate and the shifting plate crush and divert the raw materials for the third time. After three crushing and diversion, not only the amount of raw materials with changed trajectory can be increased, but also the falling trajectory of the raw materials can be changed many times, which is beneficial to reduce the impact force of the raw materials on the belt scale and reduce the accumulation of materials and agglomeration of raw materials in the hopper.

[0023] 4. The crank-connecting rod mechanism drives the connecting column to move horizontally, the connecting column drives the third connecting piece to move horizontally, and the connecting piece drives the leveling plate to move horizontally, leveling the raw materials falling onto the belt scale so that the raw materials can be evenly distributed, and the raw materials on the belt scale can be evenly transported, and then the raw materials can fall evenly onto another conveying mechanism, thereby improving the batching accuracy of the belt scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of a feeding device for weighing compound fertilizer raw materials of the present invention; Figure 2 A perspective view of a hopper of the present invention; Figure 3 for Figure 2 The enlarged view of point A in the middle; Figure 4 It is a structural schematic diagram of the buffer mechanism of the present invention; Figure 5 It is a cross-sectional view of the hopper of the present invention.

[0025] In the figure: 1. frame; 2. belt scale; 21. conveyor belt; 211. roller; 3. hopper; 31. discharge port; 311. side wall one; 312. side wall two; 4. buffer mechanism; 41. buffer member; 411. buffer plate one; 412. buffer plate two; 413. arch breaking head; 414. material removal plate; 415. first connecting member; 416. second connecting member; 42. driving device; 421. driving roller; 422. flexible pad; 423. crank-connecting rod mechanism; 424. connecting rod; 425. connecting column; 426. limit groove; 427. slide groove; 428. guide groove; 429. guide member; 5. cleaning assembly; 51. cleaning plate; 52. elastic member; 53. scraper; 6. leveling assembly; 61. third connecting member; 62. leveling plate; 621. inclined surface. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 5 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0027] Example like Figure 1 As shown, this embodiment provides a feeding device for weighing compound fertilizer raw materials, including a belt scale 2 and a hopper 3 arranged above the belt scale 2. The raw materials fall from the hopper 3 onto the belt scale 2, and are mixed and prepared after being weighed and transported.

[0028] like Figure 1 As shown, the belt scale 2 includes a conveyor belt 21 and a weighing sensor (not shown in the figure), and the conveying direction of the conveyor belt 21 is left and right. The conveyor belt 21 has a roller 211, and the roller 211 is driven to rotate by a driving motor. This is a prior art and will not be described in detail.

[0029] like Figure 1 and Figure 2 As shown, the hopper 3 is arranged on the frame 1 at one end of the belt scale 2, and the lower end of the hopper 3 has a discharge port 31, and the discharge port 31 has two front and rear side walls 1 311 and two left and right side walls 2 312, which are formed by staggered side walls 1 311 and side walls 2 312.

[0030] like Figure 1 The belt scale 2 shown is provided with a buffer mechanism 4 (such as Figure 4 As shown), cleaning component 5 (as Figure 5 as shown) and the leveling assembly 6 (as shown Figure 5 ). The buffer mechanism 4 is used to change the trajectory of the raw material falling to reduce the impact force of the raw material on the belt scale 2, and reduce the accumulation of materials in the hopper 3 and the agglomeration of raw materials. The cleaning component 5 is used to clean the raw material adhering to the conveyor belt 21 to improve the weighing accuracy of the belt scale 2. The leveling component 6 is used to level the raw material falling on the belt scale 2 so that the raw material can be evenly distributed and evenly transported on the belt scale 2 to improve the batching accuracy of the belt scale 2.

[0031] like Figure 4 As shown, the buffer mechanism 4 includes a buffer member 41 and a driving device 42 for driving the buffer member 41 to move.

[0032] like Figure 4 As shown, the buffer member 41 includes a buffer plate 1 411 , a buffer plate 2 412 , a breaker head 413 and a material removing plate 414 .

[0033] like Figure 3 and Figure 4 As shown, the buffer plate 1 411 and the buffer plate 2 412 are arranged in parallel in the left and right directions in the discharge port 31, and the plate surfaces of the buffer plate 1 411 and the buffer plate 2 412 are perpendicular to the left and right directions, and the upper ends of the buffer plate 1 411 and the buffer plate 2 412 are hinged on the two side walls 1 311. The upper end of the buffer plate 2 412 is arc-shaped and abuts against the side wall 2 312, so that the raw material can only pass between the two buffer plates 2 412, so that the raw material can contact the buffer plate 1 411 or the buffer plate 2 412 as much as possible.

[0034] like Figure 4 and Figure 5As shown, a breaking arch head 413 is provided above the buffer plate 411, and the breaking arch head 413 is prism-shaped. The two bottom plates are arranged parallel to each other front and back. The upper end surface of the buffer plate 411 is fixedly connected to an edge of the breaking arch head 413. This design helps to increase the contact area between the raw material and the breaking arch head 413, improve the crushing effect on the block raw material, and reduce the blockage of the hopper 3.

[0035] In this embodiment, Figure 4 and Figure 5 As shown, the number of buffer plates 1 411 is two, and other numbers may also be set. The two buffer plates 1 411 are located between the two buffer plates 2 412. The lower ends of the buffer plates 1 411 and 2 412 are hinged on the first connecting member 415, and the first connecting member 415 is horizontally arranged in the discharge port 31. The length direction of the first connecting member 415 is parallel to the left and right direction. The middle parts of the buffer plates 1 411 and 2 412 are hinged on the second connecting member 416, and the second connecting member 416 is parallel to the first connecting member 415.

[0036] like Figure 4 and Figure 5 As shown, the material-diverting plate 414 is arranged between two buffer plates 1 411 or one buffer plate 1 411 and one buffer plate 2 412, that is, the material-diverting plate 414 and the buffer plate 1 411 or the buffer plate 2 412 are arranged at intervals, and the material-diverting plate 414 is parallel to the buffer plate 1 411. The upper end of the material-diverting plate 414 is hinged on the second connecting member 416, and the lower end of the material-diverting plate 414 is hinged on the first connecting member 415. The distance between the material-diverting plate 414 and the buffer plate 1 411 or the buffer plate 2 412 is equal, and the height of the material-diverting plate 414 is less than the height of the buffer plate 1 411 and the buffer plate 2 412.

[0037] The breaking arch head 413 crushes and diverts the raw materials in the hopper 3 once, the buffer plate 1 411 and the buffer plate 2 412 corresponding to the position of the material diverting plate 414 crush and divert the raw materials for the second time, and the buffer plate 1 411, the buffer plate 2 412 and the position at the same horizontal position of the material diverting plate 414 and the material diverting plate 414 crush and divert the raw materials for the third time. After the three crushing and diversion, not only the amount of raw materials whose trajectory is changed can be increased, but also the falling trajectory of the raw materials can be changed multiple times, which is beneficial to reduce the impact force of the raw materials on the belt scale 2 and reduce the accumulation of materials and agglomeration of raw materials in the hopper 3.

[0038] like Figure 3 As shown, the driving device 42 includes a driving roller 421 and a crank connecting rod mechanism 423 .

[0039] like Figure 1 and Figure 5As shown, the driving roller 421 is arranged above the roller 211 and is tangential to the roller 211. The driving roller 421 is driven to rotate by the roller 211. The axis of the driving roller 421 extends in the front-rear direction. The driving roller 421 is wrapped with a flexible pad 422, which can reduce the wear of the driving roller 421 on the conveyor belt 21 on the one hand, and on the other hand, the raw materials adhered to the conveyor belt 21 will be partially adhered to the flexible pad 422 after being squeezed by the driving roller 421 and the roller 211.

[0040] like Figure 3 and Figure 4 As shown, the crank-connecting rod mechanism 423 includes a crank fixedly connected to the driving roller 421 and a connecting rod 424 rotatably connected to the crank, which is a prior art and will not be described in detail. The connecting rod 424 moves in the left-right direction, and a guide groove 428 is provided upward at the end of the connecting rod 424. A guide member 429 is fixedly installed on the first connecting member 415, and the guide member 429 is installed in the guide groove 428. The guide member 429 is a guide column.

[0041] like Figure 3 and Figure 4 As shown, the lower end of the discharge port 31 is provided with a limit groove 426 and a slide groove 427 which are parallel to each other. The limit groove 426 is located at the lower end of the slide groove 427. A connecting column 425 is fixedly installed on the end of the connecting rod 424 near the discharge port 31. The connecting column 425 is inserted into the limit groove 426. The connecting rod 424 drives the connecting column 425 to slide left and right in the limit groove 426. On the one hand, the limit groove 426 can make the movement trajectory of the connecting column 425 horizontal, so that the movement of the connecting rod 424 is also horizontal. On the other hand, the limit groove 426 can also limit the stroke of the horizontal movement of the connecting column 425. The guide member 429 passes through the slide groove 427 and is installed in the guide groove 428. The guide member 429 is a guide column. At the same time, the slide groove 427 also limits the distance of the guide member 429 moving left and right.

[0042] The connecting rod 424 drives the connecting column 425 and the guide groove 428 to move left and right, and the guide groove 428 drives the guide member 429 to move left and right. Since the buffer plate 1 411, the buffer plate 2 412 and the material stripping plate 414 are all hinged on the side wall 1 311 of the discharge port 31 and the first connecting member 415, the guide groove 428 drives the guide member 429 to slide upward while pushing the guide member 429 to move left and right, so that the movement trajectory of the first connecting member 415 is an arc, thereby making the movement trajectory of the buffer plate 2 412, the buffer plate 1 411 and the material stripping plate 414 an arc.

[0043] The cleaning assembly 5 includes a cleaning plate 51 , an elastic member 52 and a scraper 53 .

[0044] like Figure 4 and Figure 5As shown, the cleaning plate 51 is arranged below the buffer plate 2 412, and a slideway is arranged at the lower part of the buffer plate 2 412. The cleaning plate 51 is slidably connected in the slideway and can slide up and down along the slideway. An elastic member 52 is also connected between the cleaning plate 51 and the buffer plate 2 412, and the elastic member 52 is a spring. The swing of the buffer plate 2 412 drives the cleaning plate 51 to swing, and the cleaning plate 51 can scrape the raw materials adhered to the conveyor belt 21. Since the trajectory of the cleaning plate 51 driven by the buffer plate 2 412 is an arc, the cleaning plate 51 can scrape the adhered raw materials when it is at the lowest point, and when the cleaning plate 51 is far away from the lowest point, the scraped raw materials can be conveyed by the conveyor belt 21.

[0045] like Figure 5 As shown, the scraper 53 is fixedly installed on the outside of the discharge port 31 near the driving roller 421. The cross section of the scraper 53 is fan-shaped, the length direction of the scraper 53 is the front-to-back direction, and the contact part between the scraper 53 and the driving roller 421 is arc-shaped to reduce damage to the flexible pad 422. The conveying direction of the conveyor belt 21 is from left to right, and the rotation direction of the driving roller 421 is counterclockwise. When the raw materials adhered to the driving roller 421 and the roller 211 move upward to contact the scraper 53 after being squeezed, they are scraped off and conveyed through the conveyor belt 21. The raw materials adhered to the conveyor belt 21 are cleaned twice, which can improve the cleaning effect.

[0046] like Figure 4 As shown, the leveling assembly 6 includes a third connecting member 61 and a leveling plate 62 .

[0047] like Figure 4 and Figure 5 As shown, the third connecting member 61 is arranged in the discharge port 31 below the first connecting member 415 and parallel to the first connecting member 415, the third connecting member 61 is fixedly connected to the connecting column 425, the leveling plate 62 is arranged in parallel with the material-diverting plate 414, and the leveling plate 62 is arranged between the buffer plate 1 411 or the buffer plate 2 412 and the material-diverting plate 414. The crank connecting rod mechanism 423 drives the connecting column 425 to move horizontally, the connecting column 425 drives the third connecting member 61 to move horizontally, and the third connecting member 61 drives the leveling plate 62 to move horizontally, so that the raw materials falling on the belt scale 2 can be leveled, so that the raw materials can be evenly distributed, and the raw materials on the belt scale 2 are evenly transported, so that the raw materials fall evenly on another conveying mechanism, thereby improving the batching accuracy of the belt scale 2. The first connecting member 415, the second connecting member 416 and the third connecting member 61 in this embodiment are all connecting rods. The left side of the rightmost leveling plate 62 is designed with two inclined surfaces 621, which are close to the middle part and are used to push the raw materials in the middle to move to both sides, which is beneficial to the uniform distribution of the raw materials.

[0048] The method of using this embodiment is as follows: like Figure 1As shown, after the raw materials enter the hopper 3, they fall onto the conveyor belt 21 of the belt scale 2 through the discharge port 31, and are mixed and formulated after being weighed and conveyed by the belt scale 2. Figure 1 and Figure 3 As shown, the roller 211 of the belt scale 2 drives the driving roller 421 to rotate, and the driving roller 421 drives the crank connecting rod mechanism 423 to move, as shown in FIG. Figure 4 and Figure 5 As shown, the connecting rod 424 drives the connecting column 425 to move left and right in the limit groove 426, and the guide groove 428 on the connecting rod 424 pushes the guide member 429 to move left and right. While the guide member 429 moves left and right, it also moves up and down along the guide groove 428. Since the guide member 429 and the first connecting member 415 are fixedly connected, the movement trajectory of the first connecting member 415 is an arc, and then the movement trajectory of the buffer plate 2 412, the buffer plate 1 411 and the material stripping plate 414 is an arc. The buffer plate 1 411 drives the arch breaking head 413 to move, and the arch breaking head 413 performs the primary crushing and diversion on the raw materials in the hopper 3; the buffer plate 1 411 and the buffer plate 2 412 located on the material-diverting plate 414 perform the secondary crushing and diversion on the raw materials; the buffer plate 1 411, the buffer plate 2 412 and the material-diverting plate 414 at the same horizontal position and the material-diverting plate 414 perform the tertiary crushing and diversion on the raw materials; after the three crushing and diversion, not only the amount of raw materials whose trajectory is changed can be increased, but also the trajectory of the raw materials falling can be changed multiple times, which is beneficial to reduce the impact force of the raw materials on the belt scale 2 and reduce the accumulation of materials and agglomeration of raw materials in the hopper 3.

[0049] like Figure 4 and Figure 5 As shown, the swing of the buffer plate 412 drives the cleaning plate 51 to swing, and the cleaning plate 51 can scrape the raw materials adhered to the conveyor belt 21. Since the trajectory of the cleaning plate 51 driven by the buffer plate 412 is an arc, the cleaning plate 51 can scrape the adhered raw materials when it is at the lowest point. When the cleaning plate 51 is far away from the lowest point, the scraped raw materials can be transported by the conveyor belt 21. The setting of the elastic member 52 makes the cleaning plate 51 and the conveyor belt 21 elastically contact each other, reducing the damage of the cleaning plate 51 to the conveyor belt 21. When the adhered raw materials are squeezed by the driving roller 421 and the roller 211 and move upward to the contact scraper 53, they are scraped off and transported through the conveyor belt 21. The raw materials adhered to the conveyor belt 21 are cleaned twice, which can improve the cleaning effect.

[0050] like Figure 4 and Figure 5 As shown, the connecting column 425 drives the third connecting member 61 to move horizontally, and the third connecting member 61 drives the leveling plate 62 to move horizontally, leveling the raw materials falling onto the belt scale 2, so that the raw materials can be evenly distributed, and the raw materials on the belt scale 2 are evenly transported, and then the raw materials are evenly dropped onto another conveying mechanism, thereby improving the batching accuracy of the belt scale 2.

[0051] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A feeding device for weighing compound fertilizer raw materials, comprising a belt scale and a hopper arranged above the belt scale, the belt scale comprising a conveyor belt, the hopper having a discharge port, the discharge port being formed by staggered side walls 1 and 2, characterized in that: The belt scale is also provided with a buffer mechanism and a cleaning assembly, wherein the buffer mechanism comprises a buffer member arranged in the discharge port and capable of contacting with the raw material to change the falling trajectory of the raw material, and a driving device driving the buffer member to move back and forth; The buffer member comprises a buffer plate 1 and a buffer plate 2 respectively hinged on two side walls 1 of the discharge port; the buffer plate 1 and the buffer plate 2 are arranged in parallel, the buffer plate 1 is arranged between the two buffer plates 2, and the upper ends of the two buffer plates 2 are also respectively abutted against the side walls 2, so that the raw materials can only pass between the two buffer plates 2; a broken arch head is arranged above the buffer plate 1, the broken arch head is prism-shaped, and the buffer plate 1 is fixedly connected to one edge of the broken arch head; The cleaning assembly includes a cleaning plate slidably installed under the second buffer plate, and an elastic member connected between the cleaning plate and the second buffer plate; the sliding direction of the cleaning plate is perpendicular to the movement direction of the conveyor belt, and the trajectory of the cleaning plate driven by the second buffer plate is an arc, so that the cleaning plate can clean the raw materials adhering to the conveyor belt and then transport them through the conveyor belt.

2. The compound fertilizer raw material weighing feeding device according to claim 1 is characterized in that: The driving device includes a driving roller driven to rotate by the roller of the conveyor belt and a crank-connecting rod mechanism connected to the driving roller; the movement direction of the connecting rod of the crank-connecting rod mechanism is horizontal movement, the lower ends of the buffer plate 1 and the buffer plate 2 are hinged on the first connecting member, and a guide member is fixedly connected to the side of the first connecting member away from the buffer plate 2, and the end of the connecting rod is provided with a guide groove that can push the guide member to move, and the guide member can slide in the guide groove in a direction perpendicular to the movement direction of the guide groove, so that the movement trajectory of the buffer plate 2 is an arc.

3. The compound fertilizer raw material weighing feeding device according to claim 2 is characterized in that: A connecting column is fixedly installed at the end of the connecting rod, and a limiting groove for limiting the connecting column is opened at the lower end of the discharge port. The connecting column is installed in the limiting groove and can slide horizontally in the limiting groove.

4. The compound fertilizer raw material weighing feeding device according to claim 3 is characterized in that: The lower end of the discharge port is located above the limiting groove and is provided with a slide groove, the slide groove is used to limit the guide member, and the guide member passes through the slide groove and is installed in the guide groove.

5. The compound fertilizer raw material weighing feeding device according to claim 2, characterized in that: The driving roller is arranged at the end of the conveyor belt on one side of the discharge port, and a flexible pad is wrapped on the driving roller. The driving roller and the drum are squeezed so that part of the raw material adhering to the conveyor belt adheres to the flexible pad. The cleaning component also includes a scraper fixedly installed on the outer side of the discharge port near the driving roller, and the scraper can scrape the raw material on the flexible pad.

6. The compound fertilizer raw material weighing feeding device according to claim 5, characterized in that: A second connecting piece is provided in the discharge port, the middle parts of buffer plate 1 and buffer plate 2 are hinged on the second connecting piece, and a material shifting plate is provided between buffer plate 1 and buffer plate 2, the upper end of the material shifting plate is hinged to the second connecting piece, and the lower end of the material shifting plate is hinged to the first connecting piece.

7. The compound fertilizer raw material weighing feeding device according to claim 6, characterized in that: The height of the material-diverting plate is smaller than the height of the buffer plate 1 and the buffer plate 2, and the material-diverting plate is spaced apart from the buffer plate 1 or the buffer plate 2.

8. The compound fertilizer raw material weighing feeding device according to claim 7, characterized in that: The belt scale is also provided with a leveling assembly, which includes a third connecting piece fixedly connected to the connecting column in the discharge port, and a leveling plate fixedly connected to the third connecting piece. A plurality of leveling plates are arranged at intervals between buffer plate one or buffer plate two and the material stripping plate, and are used to level the raw materials falling onto the conveyor belt.

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