Feeding device suitable for chemical raw materials wrapped in material bag

Abstract

A feeding device suitable for chemical raw materials wrapped in a material bag comprises a feeding hopper, a large-hole screen, a discharging pipe, a bag breaking part, a longitudinal carrying mechanism, a transverse carrying mechanism and a stirring mechanism, a stirring cavity is formed in the feeding hopper, an opening is formed in the upper portion of the feeding hopper and covers the large-hole screen, a discharging opening is formed in the bottom wall of the feeding hopper, and the discharging pipe is fixedly arranged on the bottom wall of the feeding hopper; the bag breaking part is arranged on the upper side face of the large-hole screen, the longitudinal carrying mechanism and the transverse carrying mechanism are fixedly arranged on one side wall of the feeding hopper and the outer side face of the other opposite side wall of the feeding hopper respectively, the stirring mechanism is arranged in the stirring cavity, and the longitudinal carrying mechanism can vertically carry material bags to one side of the upper portion of the feeding hopper. The transverse carrying mechanism can move the material bag from one side to the other side in the horizontal direction, and the bag breaking part can scratch the bottom of the material bag moving in the horizontal direction, so that chemical raw materials in the material bag enter the stirring cavity through the large-hole screen and are stirred by the stirring mechanism. Therefore, manual material bag carrying and bag breaking operation can be omitted, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to a feeding device for chemical raw materials, in particular to a feeding device suitable for chemical raw materials coated in material bags. Background Art

[0002] Chemical product manufacturing often uses a dosing device, typically installed at the feed inlet of production equipment, to feed chemical raw materials into the equipment. In actual chemical production, powdered or granular chemical raw materials are typically enclosed in bags, often made of plastic woven tape or kraft paper bags. Some corrosive or perishable chemicals are enclosed in sealed bags made of corrosion-resistant materials. Manual dosing of these bags is often performed, with operators manually carrying the bags or using a transport cart (such as a handcart) to the dosing device. The operator then removes the bag's seal or simply cuts the bag open, allowing the chemical inside to be fed into the production equipment via the dosing device. However, manual dosing is labor-intensive and difficult to meet the large-scale chemical raw material supply requirements of automated production. Furthermore, powdered or corrosive chemicals pose a high risk of injury to operators. Therefore, how to provide a device for automatically feeding chemical raw materials coated in material bags has become one of the technical problems to be solved urgently in this field. Utility Model Content

[0003] The technical problem to be solved by this technical solution is how to provide a feeding device that can automatically feed chemical raw materials wrapped in material bags, so as to avoid health damage to operators during feeding and reduce manual operation costs.

[0004] To solve the above technical problems, the present technical solution provides a feeding device applicable to chemical raw materials wrapped in a material package, which is used for handling, bag-breaking and stirring the powdery or granular chemical raw materials in the material package. The feeding device includes: a feeding hopper, a large-hole sieve mesh, a bag-breaking part, a discharge pipe, a longitudinal handling mechanism, a transverse handling mechanism and a stirring mechanism. Among them, the inside of the feeding hopper has a stirring cavity. The upper part of the feeding hopper forms an opening communicating with the stirring cavity and fixedly covers the large-hole sieve mesh. The bag-breaking part is fixedly arranged on the upper side of the large-hole sieve mesh. The bottom wall of the feeding hopper is provided with a discharge port communicating with the stirring cavity. The discharge pipe is fixedly installed on the outer side of the bottom wall and communicates with the discharge port. The longitudinal handling mechanism is fixedly arranged on the outer side of one side wall of the feeding hopper. The transverse handling mechanism is fixedly arranged on the outer side of the other side wall of the feeding hopper opposite to the longitudinal handling mechanism. The stirring mechanism is arranged in the stirring cavity. The longitudinal handling mechanism vertically transports the material package to the side of the upper part of the feeding hopper, and then the transverse handling mechanism horizontally moves the material package from this side to the other side of the upper part of the feeding hopper. The bag-breaking part cuts the bottom of the horizontally moving material package, so that the chemical raw materials in the material package enter the stirring cavity through the large-hole sieve mesh and are stirred by the stirring mechanism. Accordingly, after applying this feeding device, it is not necessary for the operator to carry the material package above the feeding hopper, nor is it necessary for the operator to perform the operations of removing the sealing line or cutting the material package. The feeding device can complete the operations of handling, bag-breaking and feeding of the material package. The large-hole sieve mesh can block the emptied material package on it and clean it to the outside of the feeding device by the transverse handling mechanism. The stirring mechanism can break up the agglomerated chemical raw materials to facilitate the implementation of subsequent process operations. Thus, it can avoid the health damage of the operator during the feeding process, greatly reduce the labor operation cost, and can realize the continuous feeding operation of a large quantity of chemical raw materials.

[0005] As another implementation of this technical solution, the longitudinal handling mechanism mainly consists of a U-shaped frame body, a driving shaft, two longitudinal lead screws, a lifting motor, two driving blocks and a lifting plate. The U-shaped frame body is composed of a horizontally arranged bottom plate and two vertically arranged vertical plates. One long side of the bottom plate is fixedly combined with the lower part of the outer side of this side wall of the feeding hopper. The lower ends of the two vertical plates are respectively fixedly combined with the two ends of the bottom plate, and one long side of the two vertical plates is respectively fixedly combined with both sides of the outer side of this side wall of the feeding hopper. Installation grooves communicating with each other are respectively formed on the upper side of the bottom plate and the opposite sides of the two vertical plates. The two ends of the driving shaft are horizontally and circumferentially rotatably arranged in the installation groove of the bottom plate through bearings. The two ends of the two longitudinal lead screws are vertically and circumferentially rotatably arranged in the installation grooves of the two vertical plates respectively. And bevel gears are fixedly sleeved on the two ends of the driving shaft and the lower ends of the two longitudinal lead screws. Moreover, the bevel gears at the two ends of the driving shaft are respectively meshed and driven with the bevel gears at the lower ends of the two longitudinal lead screws. The lifting motor is installed at the lower part of one of the vertical plates, and the driving end of the lifting motor is connected to one end of the adjacent driving shaft. The two driving blocks are respectively fixedly combined with both sides of the lifting plate. And through holes are vertically formed in the driving blocks, and ball screw nut pairs are fixedly installed in the through holes. The two driving blocks are movably embedded in the installation grooves of the two vertical plates, and the ball screw nut pairs of the two driving blocks are respectively screwed on the two longitudinal lead screws, so that the lifting motor drives the driving shaft to drive the lifting plate to move up and down in the U-shaped frame body. Accordingly, the operator can place the material package on the upper side of the lower-positioned lifting plate through a handling device such as a forklift or a handcart. After that, the lifting plate can be lifted to the side beside the upper part of the feeding hopper by the driving of the lifting motor, thus saving the operator the operation of lifting the material package.

[0006] As another implementation of this technical solution, the horizontal handling mechanism mainly consists of an L-shaped support plate, a horizontal plate, a horizontal lead screw, a push block, a push plate, and a pushing motor. The L-shaped support plate is fixedly attached to the outer side of the other side wall of the feeding hopper at the end of its horizontal section. The horizontal plate is horizontally arranged above the large-hole sieve mesh, and one end of the horizontal plate is fixedly attached to the upper end of the vertical section of the L-shaped support plate. The other end of the horizontal plate is located above the longitudinal handling mechanism. A mounting groove is provided along the axial direction on the lower side of the horizontal plate. The two ends of the horizontal lead screw are horizontally and circumferentially rotatably arranged in the mounting groove of the horizontal plate through bearings. The push block is horizontally provided with a through hole and a ball screw nut pair is fixedly installed in the through hole. The push block is horizontally movably embedded in the mounting groove of the horizontal plate, and the ball screw nut pair of the push block is screwed on the horizontal lead screw. The push plate is arranged with its plate surface vertically, and the upper center of the push plate is fixedly attached to the lower part of the push block. The pushing motor is installed on the upper part of the vertical section of the L-shaped support plate, and the driving end of the pushing motor is connected to one end of the adjacent horizontal lead screw. The horizontal lead screw is driven by the pushing motor to drive the push plate to horizontally move above the large-hole sieve mesh. Accordingly, the push plate can, under the drive of the pushing motor, move the bale lifted by the longitudinal handling mechanism from one side of the upper part of the feeding hopper to the other side of the upper part of the feeding hopper through the upper side surface of the large-hole sieve mesh, and complete the bale-breaking and chemical raw material feeding operations during the horizontal movement of the bale, thereby saving the relevant operations of the operator.

[0007] As another implementation of this technical solution, the bale-breaking part consists of several strip-shaped blades, and the several strip-shaped blades are all parallel to the direction from one side wall to the other side wall of the feeding hopper and are evenly fixedly arranged on the upper side surface of the large-hole sieve mesh. Accordingly, the bale moving horizontally on the upper side surface of the large-hole sieve mesh is cut.

[0008] As another implementation of this technical solution, the lower side edge of the push plate is close to the upper side surface of the large-hole sieve mesh, and several notches are provided on the lower side edge corresponding to the several strip-shaped blades. Accordingly, the push plate can push the sheet-shaped bale after bale-breaking and feeding to the outside of the feeding hopper.

[0009] As another implementation of this technical solution, the stirring mechanism mainly consists of several stirring rollers, a transmission shaft and a stirring motor. The two ends of the several stirring rollers are horizontally and evenly arranged in the stirring cavity through bearings. And at the ends of the several stirring rollers on the same side, bevel gears are fixedly arranged. The two ends of the transmission shaft are horizontally arranged in the stirring cavity through bearings and perpendicular to the stirring rollers, and are adjacent to the ends of the several stirring rollers on the same side. Several bevel gears are evenly fixedly sleeved on the transmission shaft to correspondingly mesh with the bevel gears of the several stirring rollers. The stirring motor is installed on one side wall of the feeding hopper, and the driving end of the stirring motor is connected to the end of the adjacent transmission shaft. The transmission shaft is driven by the stirring motor to drive the several stirring rollers to rotate circumferentially. Accordingly, the several stirring rollers can stir and crush the caked chemical raw materials put into the stirring cavity.

[0010] As another implementation of this technical solution, the stirring roller consists of a roller body, two mounting parts protruding from both ends of the roller body and several stirring rods. The two mounting parts are respectively penetrated with bearings and fixedly installed on two opposite side walls in the stirring cavity. And one of the mounting parts is fixedly sleeved with a bevel gear. The several stirring rods are divided into several groups, and each group contains multiple stirring rods. The multiple stirring rods in each group are radially and evenly fixedly arranged on the circumferential side wall of the roller body. And several groups of stirring rods are evenly fixedly arranged on the side wall of the roller body along the axial direction of the roller body. And the stirring rods of the several stirring rollers are staggered with each other. Accordingly, the caked chemical raw materials can be stirred evenly and intensively.

[0011] As another implementation of this technical solution, the bevel gears on the transmission shaft are arranged with the same direction of the gear slopes, or the gear slopes of any two adjacent bevel gears face opposite directions. Accordingly, the several stirring rollers can rotate in the same direction, or any two adjacent stirring rollers rotate towards each other.

[0012] As another implementation of this technical solution, the bottom wall gradually slopes downward from its periphery to the central position and is in a funnel shape. The discharge port is opened at the central position of the bottom wall. Accordingly, it is beneficial for the stirred chemical raw materials to gather at the bottom of the stirring cavity and enter the subsequent process equipment through the discharge port.

[0013] As another implementation of this technical solution, several support legs are evenly fixedly arranged on the outer side of the lower part of the feeding hopper. Accordingly, the feeding device can be arranged at the feeding port of the subsequent process equipment through the several support legs. Description of the Drawings

[0014] Figure 1 It is a schematic external view of the feeding device for chemical raw materials suitable for being coated in a sachet of the present utility model;

[0015] Figure 2 It is an exploded view of the main components of the present utility model;

[0016] Figure 3 This is a partial schematic view of the stirring mechanism in the present utility model.

[0017] Explanation of symbols in the attached drawings:

[0018] 1 Feeding hopper; 11 Stirring chamber; 12 Discharge pipe; 2 Large-hole screen; 3 Bag-breaking part; 31 Strip-shaped blade; 4 Longitudinal conveying mechanism; 411 Bottom plate; 412 Vertical plate; 4121 Installation groove; 42 Driving shaft; 421 Bevel gear; 43 Longitudinal lead screw; 431 Bevel gear; 44 Driving block; 45 Lifting plate; 5 Transverse conveying mechanism; 51 L-shaped support plate; 52 Horizontal plate; 53 Transverse lead screw; 54 Pushing block; 55 Pushing plate; 551 Notch; 6 Stirring mechanism; 61 Stirring roller; 611 Bevel gear; 612 Roller body; 613 Installation part; 614 Stirring rod; 62 Transmission shaft; 621 Bevel gear; 7 Support leg. Detailed implementation manners

[0019] The detailed description and technical content of the present utility model are described below in conjunction with the drawings. However, the attached drawings are only for reference and illustration, and are not used to limit the present utility model.

[0020] In the context of this specification, any two or more embodiments of the present utility model can be arbitrarily combined, and the technical solutions formed thereby belong to a part of the original public content of this specification, and at the same time fall within the protection scope of the present utility model.

[0021] Such as Figure 1 、 2As shown in FIGS. 0 and 3, they are schematic diagrams of the specific implementation of the feeding device for chemical raw materials suitable for being wrapped in a material package of the present utility model. The feeding device for chemical raw materials suitable for being wrapped in a material package of the present utility model (hereinafter referred to as the feeding device) is used for handling, unpacking and stirring the powdery or granular chemical raw materials in the material package. The feeding device includes a feeding hopper 1, a large-hole screen 2, an unpacking part 3, a discharge pipe 12, a longitudinal conveying mechanism 4, a transverse conveying mechanism 5 and a stirring mechanism 6. Among them, the inside of the feeding hopper 1 has a stirring cavity 11. The upper part of the feeding hopper 1 forms an opening (not shown in the figure) communicating with the stirring cavity 11 and fixedly covers the large-hole screen 2. The unpacking part 3 is fixedly arranged on the upper side surface of the large-hole screen 2. The bottom wall of the feeding hopper 1 is provided with a discharge port (not shown in the figure) communicating with the stirring cavity 11. The discharge pipe 12 is fixedly installed on the outer side of the bottom wall and communicates with the discharge port. The longitudinal conveying mechanism 4 is fixedly arranged on the outer side surface of one side wall of the feeding hopper 1, and the transverse conveying mechanism 5 is fixedly arranged on the outer side surface of the other side wall of the feeding hopper 1 opposite to the longitudinal conveying mechanism 4. The stirring mechanism 6 is arranged in the stirring cavity 11. By operating the longitudinal conveying mechanism 4, the material package can be vertically conveyed to the side of the upper part of the feeding hopper 1, and then the transverse conveying mechanism 5 moves the material package horizontally from this side to the other side of the upper part of the feeding hopper 1. The unpacking part 3 can cut the bottom of the horizontally moving material package, so that the chemical raw materials in the material package enter the stirring cavity 11 through the large-hole screen 2 and are stirred by the stirring mechanism 6.

[0022] Specifically, the longitudinal conveying mechanism 4 in the present utility model mainly consists of a U-shaped frame body, a driving shaft 42, two longitudinal lead screws 43, a lifting motor (not shown in the figure), two driving blocks 44 and a lifting plate 45. The U-shaped frame body is composed of a bottom plate 411 arranged horizontally and two vertical plates 412 arranged vertically. One long side of the bottom plate 411 is fixedly combined with the lower part of the outer side surface of this side wall of the feeding hopper 1. The lower ends of the two vertical plates 412 are respectively fixedly combined with the two ends of the bottom plate 411, and one long side of the two vertical plates 412 is respectively fixedly combined with both sides of the outer side surface of this side wall of the feeding hopper 1. Installation grooves communicating with each other are respectively formed on the upper side of the bottom plate 411 and the opposite sides of the two vertical plates 412. The two ends of the driving shaft 42 are horizontally and circumferentially rotatably arranged in the installation groove (not shown in the figure) of the bottom plate 411 through bearings (not shown in the figure). The two ends of the two longitudinal lead screws 43 are vertically and circumferentially rotatably arranged in the installation grooves 4121 of the two vertical plates 412 through bearings (not shown in the figure). And bevel gears 421 and 431 are fixedly sleeved on the two ends of the driving shaft 42 and the lower ends of the two longitudinal lead screws 43 respectively. Moreover, the bevel gears 421 at the two ends of the driving shaft 42 are respectively meshed and driven with the bevel gears 431 at the lower ends of the two longitudinal lead screws 43. The lifting motor is installed at the lower part of one of the vertical plates 412, and the driving end of the lifting motor is connected to one end of the adjacent driving shaft 42. The two driving blocks 44 are respectively fixedly combined with both sides of the lifting plate 45, and through holes (not shown in the figure) are vertically formed in the driving blocks 44, and ball screw nut pairs are fixedly installed in the through holes. The two driving blocks 44 are movably embedded in the installation grooves 4121 of the two vertical plates 412 in the up and down direction, and the ball screw nut pairs of the two driving blocks 44 are respectively screwed on the two longitudinal lead screws 43, so that the lifting motor drives the driving shaft 42 to drive the lifting plate 45 to move up and down in the U-shaped frame body. Accordingly, an operator can place a bale on the upper side of the lower-positioned lifting plate 45 through a handling device such as a forklift or a handcart, and then the lifting plate 45 can be lifted to the side of the upper part of the feeding hopper 1 by the driving of the lifting motor, so as to save the operation of the operator for lifting the bale.

[0023] The horizontal conveying mechanism 5 in the present invention is mainly composed of an L-shaped support plate 51, a horizontal plate 52, a horizontal screw rod 53, a push block 54, a push plate 55 and a push motor (not shown in the figure), wherein the L-shaped support plate 51 is fixedly combined with the end of its horizontal section (not shown in the figure) to the outer side surface of the other side wall of the feeding hopper 1, the horizontal plate 52 is horizontally arranged above the large-pore screen 2, and one end of the horizontal plate 52 is fixedly combined with the upper end of the vertical section of the L-shaped support plate 51, and the other end of the horizontal plate 52 is located above the longitudinal conveying mechanism 4, and a mounting groove (not shown in the figure) is opened on the lower side of the horizontal plate 52 along its axial direction. The two ends of the horizontal screw rod 53 are horizontally and circumferentially rotatable in the mounting groove of the horizontal plate 52 through bearings (not shown in the figure), and the push block 54 is horizontally opened with a through hole (not shown in the figure) and is fixedly installed in the through hole. The ball nut pair and the push block 54 can be horizontally moved and embedded in the mounting groove of the horizontal plate 52, and the ball nut pair of the push block 54 is screwed on the horizontal screw rod 53. The push plate 55 is arranged with its plate surface in the vertical direction, and the upper center of the push plate 55 is fixedly combined with the lower part of the push block 54. The push motor is installed on the upper part of the vertical section of the L-shaped support plate 51 and the driving end of the push motor is connected to one end of the adjacent horizontal screw rod 53. The horizontal screw rod 53 is driven by the push motor to drive the push plate 55 to move horizontally above the large-hole screen 2. In this way, the push plate 55 can be driven by the push motor to move the material bag lifted by the longitudinal conveying mechanism 4 from one side of the upper part of the feeding hopper 1 through the upper side of the large-hole screen 2 to the other side of the upper part of the feeding hopper 1, and the bag breaking and chemical raw material feeding operations are completed during the horizontal movement of the material bag, thereby eliminating the need for related operations by the operator.

[0024] Furthermore, the bag breaking unit 3 of the present invention is composed of a plurality of strip-shaped blades 31, which are uniformly fixed and arranged on the upper side of the large-pore screen 2 in a direction parallel to the direction from one side wall to the other side wall of the feeding hopper 1, so as to cut the material bags moving horizontally on the upper side of the large-pore screen 2. In addition, the lower side edge of the push plate 55 is close to the upper side of the large-pore screen 2 and is provided with a plurality of notches 551 corresponding to the plurality of strip-shaped blades 31. This allows the push plate 55 to push the thin-sheet material bags that have been broken and fed to the outside of the feeding hopper 1.

[0025] The stirring mechanism 6 in the present invention is mainly composed of several stirring rollers 61, a transmission shaft 62 and a stirring motor (not shown in the figure), wherein both ends of the several stirring rollers 61 are horizontally and evenly arranged in the stirring chamber 11 through bearings (not shown in the figure), combined with Figure 3As shown, at the ends of the several stirring rollers 61 on the same side, bevel gears 611 are fixedly arranged. Both ends of the transmission shaft 62 are horizontally arranged in the stirring chamber 11 through bearings (not shown in the figure) and are perpendicular to the stirring rollers 61, and are adjacent to the ends of the several stirring rollers 61 on the same side. Several bevel gears 621 are evenly and fixedly sleeved on the transmission shaft 62 to correspondingly mesh with the bevel gears 611 of the several stirring rollers 61. The stirring motor is installed on one side wall of the feeding hopper 1, and the driving end of the stirring motor is connected to the end of the adjacent transmission shaft 62. The transmission shaft 62 is driven by the stirring motor to drive the several stirring rollers 61 to rotate circumferentially, so that the several stirring rollers 61 can stir and crush the agglomerated chemical raw materials put into the stirring chamber 11.

[0026] Furthermore, the stirring roller 61 can be composed of a roller body 612, two mounting parts 613 protruding from both ends of the roller body 612, and several stirring rods 614. The two mounting parts 613 are respectively provided with bearings and fixedly installed on two opposite side walls in the stirring chamber 11. One of the mounting parts 613 is fixedly sleeved with a bevel gear 611. The several stirring rods 614 are divided into several groups, and each group includes multiple stirring rods 614. The multiple stirring rods 614 in each group are radially and evenly fixedly arranged on the circumferential side wall of the roller body 612, and the several groups of stirring rods 614 are evenly fixedly arranged on the side wall of the roller body 612 along the axial direction of the roller body 612. And the stirring rods 614 of each group of the several stirring rollers 61 are arranged in a staggered manner with each other, so as to uniformly and intensively stir the agglomerated chemical raw materials. In addition, the bevel gears 621 on the transmission shaft 62 can be arranged with the gear slopes in the same direction (as Figure 3 shown), or the gear slopes of any two adjacent bevel gears 621 can be arranged in opposite directions (not shown in the figure), so that the several stirring rollers 61 can rotate in the same direction, or any two adjacent stirring rollers 61 can rotate towards each other.

[0027] In addition, the bottom wall of the feeding hopper 1 in the present utility model can be gradually inclined downward from its periphery to the central position to form a funnel shape, and the discharge port is opened at the central position of the bottom wall, that is, the lowest position, so as to facilitate the stirred chemical raw materials to gather at the bottom of the stirring chamber 11 and enter the subsequent process equipment through the discharge port. Several support legs 7 can be evenly and fixedly arranged on the outer side of the lower part of the feeding hopper 1, so as to arrange the feeding device at the feeding port of the subsequent process equipment through the several support legs 7.

[0028] In summary, after the feeding device of the present utility model is applied, there is no need for an operator to carry the material package above the feeding hopper, nor is there a need for the operator to remove the sealing line or cut the material package. Instead, the feeding device can complete the operations of carrying, bag-breaking, and feeding the material package. The large-hole sieve can block the emptied material package thereon and clean it to the outside of the feeding device by the transverse conveying mechanism. The stirring mechanism can break up the agglomerated chemical raw materials to facilitate the implementation of subsequent process operations. Thereby, it can avoid health damage to the operator during the feeding process, significantly reduce the labor operation cost, and enable continuous feeding operations for a large quantity of chemical raw materials.

[0029] The above is only a preferred embodiment of the present utility model and is not intended to limit the patent scope of the present utility model. Equivalent changes made by other applications of the patent concept of the present utility model shall fall within the patent protection scope of the present utility model.

Claims

1. A feeding device for chemical raw materials suitable for being wrapped in a material package, used for handling, breaking the package, and stirring the powdery or granular chemical raw materials in the material package, characterized in that, The feeding device includes: a feeding hopper, a large-hole screen, a bag-breaking part, a discharge pipe, a longitudinal conveying mechanism, a transverse conveying mechanism and a stirring mechanism. The inside of the feeding hopper has a stirring chamber. The upper part of the feeding hopper forms an opening communicating with the stirring chamber and fixedly covers the large-hole screen. The bag-breaking part is fixedly arranged on the upper side surface of the large-hole screen. The bottom wall of the feeding hopper is provided with a discharge port communicating with the stirring chamber. The discharge pipe is fixedly installed on the outer side of the bottom wall and communicates with the discharge port. The longitudinal conveying mechanism is fixedly arranged on the outer side surface of one side wall of the feeding hopper. The transverse conveying mechanism is fixedly arranged on the outer side surface of the other side wall of the feeding hopper opposite to the longitudinal conveying mechanism. The stirring mechanism is arranged in the stirring chamber. The longitudinal conveying mechanism vertically conveys the material bag to a side beside the upper part of the feeding hopper. The transverse conveying mechanism horizontally moves the material bag from the side to the other side beside the upper part of the feeding hopper. The bag-breaking part cuts the bottom of the horizontally moving material bag, so that the chemical raw material in the material bag enters the stirring chamber through the large-hole screen and is stirred by the stirring mechanism.

2. The feeding device according to claim 1, wherein The longitudinal conveying mechanism is mainly composed of a U-shaped frame body, a driving shaft, two longitudinal lead screws, a lifting motor, two driving blocks and a lifting plate. The U-shaped frame body is composed of a horizontally arranged bottom plate and two vertically arranged vertical plates. One long side of the bottom plate is fixedly combined with the lower part of the outer side surface of the side wall. The lower ends of the two vertical plates are respectively fixedly combined with the two ends of the bottom plate, and one long side of the two vertical plates is respectively fixedly combined with the two sides of the outer side surface of the side wall. Installation grooves communicating with each other are respectively opened on the upper side of the bottom plate and the opposite sides of the two vertical plates. The two ends of the driving shaft are horizontally and circumferentially rotatably arranged in the installation groove of the bottom plate through bearings. The two ends of the two longitudinal lead screws are vertically and circumferentially rotatably arranged in the installation grooves of the two vertical plates through bearings, and bevel gears are fixedly installed at the two ends of the driving shaft and the lower ends of the two longitudinal lead screws. Moreover, the bevel gears at the two ends of the driving shaft are respectively meshed and driven with the bevel gears at the lower ends of the two longitudinal lead screws. The lifting motor is installed at the lower part of one of the vertical plates, and the driving end of the lifting motor is connected with one end of the adjacent driving shaft. The two driving blocks are respectively fixedly combined with the two sides of the lifting plate, and through holes are vertically opened in the driving blocks and ball screw nut pairs are fixedly installed in the through holes. The two driving blocks are movably embedded in the installation grooves of the two vertical plates, and the ball screw nut pairs of the two driving blocks are respectively screwed on the two longitudinal lead screws, so that the lifting motor drives the driving shaft to drive the lifting plate to move up and down.

3. The feeding device according to claim 1, wherein, The horizontal conveying mechanism mainly consists of an L-shaped support plate, a horizontal plate, a horizontal lead screw, a pushing block, a pushing plate and a pushing motor. The L-shaped support plate is fixedly connected to the outer side surface of the other side wall at the end of its horizontal section. The horizontal plate is horizontally arranged above the large-hole sieve mesh, and one end of the horizontal plate is fixedly connected to the upper end of the vertical section of the L-shaped support plate. The other end of the horizontal plate is located above the longitudinal conveying mechanism. A mounting groove is formed along the axial direction on the lower side of the horizontal plate. The two ends of the horizontal lead screw are horizontally and circumferentially rotatably arranged in the mounting groove of the horizontal plate through bearings. The pushing block is horizontally provided with a through hole and a ball screw pair is fixedly installed in the through hole. The pushing block is horizontally movably embedded in the mounting groove of the horizontal plate, and the ball screw pair of the pushing block is screwed on the horizontal lead screw. The pushing plate is arranged with its plate surface vertically, and the upper center of the pushing plate is fixedly connected to the lower part of the pushing block. The pushing motor is installed on the upper part of the vertical section of the L-shaped support plate, and the driving end of the pushing motor is connected to one end of the adjacent horizontal lead screw. The horizontal lead screw is driven by the pushing motor to drive the pushing plate to horizontally move above the large-hole sieve mesh.

4. The feeding device according to claim 3, wherein, The bag-breaking part consists of several strip-shaped blades, and the several strip-shaped blades are all parallel to the direction from one side wall to the other side wall and are evenly fixedly arranged on the upper side surface of the large-hole sieve mesh.

5. The feeding device according to claim 4, wherein, The lower side edge of the pushing plate is close to the upper side surface of the large-hole sieve mesh, and several notches are formed on the lower side edge corresponding to the several strip-shaped blades.

6. The feeding device according to claim 1, wherein, The stirring mechanism mainly consists of several stirring rollers, a transmission shaft and a stirring motor. The two ends of the several stirring rollers are horizontally and evenly arranged in the stirring cavity through bearings, and bevel gears are fixedly arranged at the ends of the several stirring rollers on the same side. The two ends of the transmission shaft are horizontally and perpendicular to the stirring rollers and are arranged in the stirring cavity near the ends of the several stirring rollers on the same side through bearings. Several bevel gears are fixedly sleeved on the transmission shaft to correspondingly mesh with the bevel gears of the several stirring rollers. The stirring motor is installed on one side wall of the feeding hopper, and the driving end of the stirring motor is connected to the end of the adjacent transmission shaft. The transmission shaft is driven by the stirring motor to drive the several stirring rollers to rotate circumferentially.

7. The feeding device according to claim 6, characterized in that, The stirring roller consists of a roller body, two mounting parts protruding from both ends of the roller body and several stirring rods. The two mounting parts are respectively provided with bearings and fixedly installed on two opposite side walls in the stirring cavity, and one of the mounting parts is fixedly sleeved with a bevel gear. The several stirring rods are divided into several groups, and each group contains multiple stirring rods. The multiple stirring rods in each group are radially and evenly fixedly arranged on the circumferential side wall of the roller body, and the several groups of stirring rods are evenly fixedly arranged on the side wall of the roller body along the axial direction of the roller body. And the stirring rods of the several stirring rollers in each group are arranged staggered with each other.

8. The feeding device according to claim 6, characterized in that, Several bevel gears on the transmission shaft are arranged with the gear inclined surfaces in the same direction or the gear inclined surfaces of any two adjacent bevel gears face in opposite directions.

9. The feeding device according to claim 1, characterized in that The bottom wall gradually slopes downward from its periphery towards its central position to form a funnel shape, and the discharge port is opened at the central position of the bottom wall.

10. The feeding device according to claim 1, characterized in that, Several support legs are evenly and fixedly arranged on the outer side of the lower part of the charging hopper.

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