Safe feeding device

Abstract

The present invention provides a safe feeding device, which includes a silo, a bag-breaking mechanism, a metering mechanism, a conveying mechanism and a control mechanism. The top of the silo is provided with an opening, and the bottom of the silo is provided with a discharge port; the bag-breaking mechanism is arranged at the top of the silo and includes a sliding baffle and a bag-breaking component. The baffle can be arranged above the bag-breaking component due to sliding, and the baffle can be arranged below the bag-breaking component due to sliding. The metering mechanism is connected to the silo, and the control mechanism is respectively connected to the metering mechanism and the conveying mechanism. The control mechanism can receive the signal of the metering mechanism and control the opening or closing of the conveying mechanism. By setting the sliding baffle and the bag-breaking component, the baffle can be arranged above the bag-breaking component due to sliding, so as to shield the bag-breaking component and reduce the occurrence of accidents. When the bag-breaking is completed, the baffle slides upward, so as to complete the shielding of the bag-breaking component and at the same time remove the packaging bag from the bag-breaking component, reducing the labor intensity of the staff.

Description

Technical Field

[0001] The present invention belongs to the technical field of feeding devices, and more specifically, relates to a safe feeding device. Background Art

[0002] During the centrifugal casting process of ductile iron pipes, in-line inoculants need to be added. The in-line inoculants are added manually by carrying the bagged inoculants to the in-line inoculation device, and then using a sharp object to cut the bag and pour it into the in-line inoculation device. Occasionally during the production process, the operator fails to add the inoculant to the in-line inoculation device in time, resulting in no in-line inoculation during the casting process and causing the pipes to be defective.

[0003] In order to improve production efficiency and the yield of cast pipes, inoculant adding devices are often used. Generally, a bag breaker is provided at the top of the hopper of the existing inoculant dispensing and adding device. The ton bag of inoculant is placed on the bag breaker, and the ton bag is cut by gravity. However, the tip of the bag breaker of the existing inoculant dispensing and adding device is always exposed. On the one hand, it is easy to cause dangerous accidents when the staff accidentally falls. On the other hand, after the inoculant in the ton bag is completely discharged, the bag breaker is still inserted into the ton bag, which is not convenient to remove and increases the labor of the staff. Summary of the Invention

[0004] The purpose of the present invention is to provide a safe feeding device to solve the problems that the bag breaker on the existing inoculant adding device is prone to cause dangerous accidents and the ton bag is not easy to remove after the inoculant is completely discharged.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a safe feeding device, including a hopper, a bag breaking mechanism, a metering mechanism, a conveying mechanism and a control mechanism. Among them, the top of the hopper is provided with an opening, and the bottom of the hopper is provided with a discharge port; the bag breaking mechanism is arranged on the top of the hopper and includes a sliding baffle and a bag breaking component. The baffle can be slid to be located above the bag breaking component to shield the bag breaking component, or the baffle can be slid to be located below the bag breaking component to facilitate the bag breaking mechanism to break the bag; the metering mechanism is connected to the hopper to weigh the materials in the hopper; the conveying mechanism has a feeding port and a material discharging port. The feeding port is connected to the discharge port, and the conveying mechanism can convey the materials entering from the feeding port to the material discharging port and discharge them; the control mechanism is respectively connected to the metering mechanism and the conveying mechanism. The control mechanism can receive the signal of the metering mechanism and control the conveying mechanism to be turned on or off.

[0006] In a possible implementation, the bag-breaking assembly includes a bag-breaking cone and a plurality of bag-breaking knives arranged around the bag-breaking cone, with the tip of the bag-breaking cone located above the bag-breaking knives; the blocking member includes a retaining ring, a sleeve, and a plurality of baffles. The plurality of baffles are arranged around the sleeve. The other end of each baffle is connected to the retaining ring relative to the end connected to the sleeve. A strip-shaped hole is formed in each baffle, and the baffles and the bag-breaking knives are in one-to-one correspondence. The bag-breaking cone is inserted into the sleeve. In the initial state, the bag-breaking cone is received in the sleeve, and each bag-breaking knife is located below the corresponding baffle; when the blocking member slides down, the bag-breaking cone extends out of the sleeve, and each bag-breaking knife passes through the corresponding strip-shaped hole and extends above the baffle.

[0007] In a possible implementation, the bag-breaking cone includes a cone head and an insertion rod. The diameter of the insertion rod is smaller than the inner diameter of the sleeve. A first tooth is provided on the insertion rod along the axial direction, and a second tooth is provided in the sleeve along the axial direction. A rotatable transmission gear is arranged between the insertion rod and the sleeve. One side of the transmission gear meshes with the first tooth, and the other side of the transmission gear meshes with the second tooth.

[0008] In a possible implementation, the bag-breaking mechanism further includes a transmission cylinder. The outer diameter of the transmission cylinder is the same as the inner diameter of the sleeve, and the inner diameter of the transmission cylinder is the same as the diameter of the insertion rod. The transmission cylinder is inserted into the sleeve, and the insertion rod is inserted into the transmission cylinder. An installation groove is provided at the top end of the transmission cylinder, and a rotatable pivot rod is arranged in the installation groove. The transmission gear is arranged on the pivot rod.

[0009] In a possible implementation, a fixing rod is provided at the bottom end of the transmission cylinder, and a fixing plate is arranged at the bottom end of the fixing rod. The fixing plate is fixedly arranged; a first guiding groove and a first avoiding groove are provided on the side wall of the inner hole of the transmission cylinder, and a first guiding plate is provided on the side wall of the insertion rod. The first guiding plate is inserted into the first guiding groove, and the first tooth is arranged in the first avoiding groove; a second guiding plate and a second avoiding groove are provided on the outer wall of the transmission cylinder, and a second guiding groove is provided on the inner wall of the sleeve. The second tooth is arranged in the second avoiding groove, and the second guiding plate is inserted into the second guiding groove.

[0010] In a possible implementation, a first resetting member is provided at the bottom of the sleeve. The bottom end of the first resetting member is connected to the fixing plate. Under the action of an external force, the sleeve slides down, and the first resetting member stores energy; when the external force is removed, the first resetting member releases energy and drives the sleeve to slide up and reset. An installation rod is provided at the bottom of the bag-breaking knife, and the bottom end of the installation rod is fixed to the fixing plate.

[0011] In a possible implementation, the bag-breaking mechanism further includes a fixed cylinder and a filter screen. The fixed cylinder is provided at the top of the silo. The filter screen is rotatably provided on the fixed cylinder. The filter screen is annular. The ring of the filter screen is arranged with respect to the fixed plate. The filter screen can rotate relative to the fixed plate, and the fixed plate is connected to the fixed cylinder.

[0012] In a possible implementation, a material guiding member is provided on the fixed plate. The material guiding member is cylindrical, and a material guiding cone is provided at the top of the material guiding member. The outer diameter of the material guiding member is the same as the diameter of the fixed plate. A plurality of first through holes and a plurality of second through holes are formed in the material guiding cone. The first through holes correspond to the fixed rods one by one, and the second through holes correspond to the first resetting members one by one. The fixed rods are inserted into the corresponding first through holes, and the first resetting members are inserted into the corresponding second through holes.

[0013] In a possible implementation, a first crushing plate is provided on the fixed cylinder. The bottom surface of the first crushing plate, the inner side wall of the fixed cylinder, the side wall of the material guiding member, and the top surface of the filter screen enclose a crushing chamber. The crushing chamber has a feed inlet and a crushed material outlet. Along the rotation direction of the filter screen, the height of the crushing chamber gradually decreases from the feed inlet to the crushed material outlet; a second crushing plate is provided on the filter screen. A connecting block is provided at a position near the bottom end of the second crushing plate. A second resetting member is provided between the connecting block and the fixed cylinder. When the second resetting member is in a natural state, the top end of the second crushing plate is provided above the filter screen, and the top end of the second crushing plate is lower than the height of the feed inlet.

[0014] In a possible implementation, the conveying mechanism includes a screw feeder, which is connected to a feeding pipe. A vibration motor is provided on the feeding pipe of the screw feeder; the safety feeding device further includes an alarm mechanism, and the alarm mechanism is connected to the control mechanism. The control mechanism can receive the signal of the metering mechanism and control the alarm mechanism to give an alarm.

[0015] The beneficial effects of the safety feeding device provided by the present invention are as follows: Compared with the prior art, by providing a sliding baffle and a bag-breaking assembly, the baffle can be slid to be located above the bag-breaking assembly, so as to shield the bag-breaking assembly. When a staff member accidentally falls, they will not be stabbed or scratched by the bag-breaking assembly, reducing the occurrence of accidents. The baffle can be slid to be located below the bag-breaking assembly to facilitate the bag-breaking mechanism to break the bag. When the bag-breaking is completed, the baffle slides up, so as to complete the shielding of the bag-breaking assembly and at the same time remove the packaging bag from the bag-breaking assembly, reducing the labor intensity of the staff; at the same time, by providing a metering mechanism, the materials in the silo can be weighed to facilitate controlling the feeding amount of the safety feeding device. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Structural schematic diagram of the safety feeding device provided by the embodiment of the present invention;

[0018] Figure 2 Structural schematic diagram of the bag-breaking mechanism in the natural state provided by the embodiment of the present invention;

[0019] Figure 3 Structural schematic diagram of the bag-breaking mechanism when breaking the bag provided by the embodiment of the present invention;

[0020] Figure 4 Structural schematic diagram of the bag-breaking cone provided by the embodiment of the present invention;

[0021] Figure 5 For Figure 4 Enlarged view of part A;

[0022] Figure 6 Structural schematic diagram of the sleeve provided by the embodiment of the present invention;

[0023] Figure 7 Structural schematic diagram of the transmission cylinder provided by the embodiment of the present invention;

[0024] Figure 8 Top view structural schematic diagram of the transmission cylinder provided by the embodiment of the present invention;

[0025] Figure 9 Structural schematic diagram of the fixed cylinder provided by the embodiment of the present invention.

[0026] Among them, the reference numerals in the figures are as follows:

[0027] 1, silo; 2, bag-breaking mechanism; 3, metering mechanism; 4, conveying mechanism; 5, control mechanism; 6, feeding pipe; 7, alarm device; 8, vibration motor;

[0028] 201. Bag-breaking cone; 2011. Cone head; 2012. Insertion rod; 2013. First tooth; 2014. First guide plate; 202. Sleeve; 203. Retaining ring; 204. Baffle; 205. Strip-shaped hole; 206. Bag-breaking knife; 207. Mounting rod; 208. Fixed rod; 209. First reset member; 210. First crushing plate; 211. Filter screen; 212. Fixed cylinder; 213. Second crushing plate; 214. Connecting block; 215. Second reset key; 216. Connecting rod; 217. Second tooth; 218. Second guide groove; 219. Transmission cylinder; 220. Second avoidance groove; 221. Second guide plate; 224. Mounting groove; 225. Transmission gear; 226. First guide groove; 227. First avoidance groove; 228. Pivoting rod; 229. Feeding member; 230. Feeding cone; 231. First through hole; 232. Second through hole. Detailed implementation manners

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] It should be further noted that the drawings and embodiments of the present invention mainly describe and illustrate the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems, etc. may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above specific forms and settings in a well-known manner.

[0031] When an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] The orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, and "several" means one or more, unless otherwise specifically defined.

[0034] The safety feeding device provided by the present invention will now be described.

[0035] Please refer to Figure 1 , Figure 2 and Figure 3 , and the safety feeding device includes a silo 1, a bag-breaking mechanism 2, a metering mechanism 3, a conveying mechanism 4, and a control mechanism 5. Among them, the top of the silo 1 is open, and the bottom of the silo 1 is provided with a discharge port; the bag-breaking mechanism 2 is arranged at the top of the silo 1 and includes a sliding baffle and a bag-breaking assembly. The baffle can be arranged above the bag-breaking assembly by sliding, so as to block the bag-breaking assembly. Or the baffle can be arranged below the bag-breaking assembly by sliding to facilitate the bag-breaking mechanism 2 to break the bag; the metering mechanism 3 is connected to the silo 1 for weighing the materials in the silo 1; the conveying mechanism 4 has a feeding port and a material conveying port, the feeding port is connected to the discharge port, and the conveying mechanism can convey the materials entering from the feeding port to the material conveying port and discharge them; the control mechanism 5 is respectively connected to the metering mechanism 3 and the conveying mechanism 4, and the control mechanism 5 can receive the signal of the metering mechanism 3 and control the opening or closing of the conveying mechanism 4.

[0036] The beneficial effects of the safety feeding device provided in this embodiment are as follows: Compared with the prior art, the safety feeding device provided in this embodiment, by providing a sliding baffle and a bag-breaking assembly, the baffle can be arranged above the bag-breaking assembly by sliding, so as to block the bag-breaking assembly. When a staff member accidentally falls, they will not be stabbed or scratched by the bag-breaking assembly, reducing the occurrence of accidents. The baffle can be arranged below the bag-breaking assembly by sliding to facilitate the bag-breaking mechanism 2 to break the bag. When the bag-breaking is completed, the baffle slides up, thus completing the blocking of the bag-breaking assembly and at the same time removing the packaging bag from the bag-breaking assembly, reducing the labor intensity of the staff; at the same time, by providing the metering mechanism 3, the materials in the silo 1 can be weighed to facilitate controlling the feeding amount of the safety feeding device.

[0037] Such as Figure 2 or Figure 3As shown, the bag-breaking assembly includes a bag-breaking cone 201 and a plurality of bag-breaking knives 206 arranged around the bag-breaking cone 201. The tip of the bag-breaking cone 201 is located above the bag-breaking knives 206; the stopper includes a retaining ring 203, a sleeve 202, and a plurality of baffles 204. The plurality of baffles 204 are arranged around the sleeve 202. The other end of the baffle 204 is connected to the retaining ring 203 relative to the end connected to the sleeve 202. A strip-shaped hole 205 is formed in the baffle 204. The baffles 204 and the bag-breaking knives 206 are in one-to-one correspondence. The bag-breaking cone 201 is inserted into the sleeve 202. In the initial state, the bag-breaking cone 201 is received in the sleeve 202, and each bag-breaking knife 206 is located below the corresponding baffle 204; when the stopper slides down, the bag-breaking cone 201 extends out of the sleeve 202, and each bag-breaking knife 206 passes through the corresponding strip-shaped hole 205 and extends above the baffle 204.

[0038] As Figure 4 , Figure 5 and Figure 6 shown, the bag-breaking cone 201 includes a cone head 2011 and an insertion rod 2012. The diameter of the insertion rod 2012 is smaller than the inner diameter of the sleeve 202. A first tooth 2013 is provided along the axial direction on the insertion rod 2012, and a second tooth 217 is provided along the axial direction in the sleeve 202. A rotatable transmission gear 225 is arranged between the insertion rod 2012 and the sleeve 202. One side of the transmission gear 225 meshes with the first tooth 2013, and the other side of the transmission gear 225 meshes with the second tooth 217. When the ton bag filled with materials is placed on the retaining ring 203, the sleeve 202 will be pressed down due to the gravity of the materials, that is, driving the bag-breaking cone 201 to rise, preventing the existence of the material retaining ring and the sleeve 202 from bearing part of the gravity and reducing the force acting on the bag-breaking cone 201, thus reducing the bag-breaking ability of the bag-breaking cone 201.

[0039] As Figure 7 and Figure 8 shown, the bag-breaking mechanism 2 further includes a transmission cylinder 219. The outer diameter of the transmission cylinder 219 is the same as the inner diameter of the sleeve 202, and the inner diameter of the transmission cylinder 219 is the same as the diameter of the insertion rod 2012. The transmission cylinder 219 is inserted into the sleeve 202, and the insertion rod 2012 is inserted into the transmission cylinder 219. An installation groove 224 is provided at the top of the transmission cylinder 219, and a rotatable pivot rod 228 is arranged in the installation groove 224. The transmission gear 225 is arranged on the pivot rod 228. The arrangement of the transmission cylinder 219 can facilitate the support of the transmission gear 225.

[0040] In addition, a fixing rod 208 is provided at the bottom end of the transmission cylinder 219. A fixing plate is provided at the bottom end of the fixing rod 208, and the fixing plate is fixedly arranged, so that the transmission cylinder 219 is fixedly arranged. A first guiding groove 226 and a first avoiding groove 227 are provided on the side wall of the inner hole of the transmission cylinder 219. A first guiding plate 2014 is provided on the side wall of the inserting rod 2012, and the first guiding plate 2014 is inserted into the first guiding groove 226. A first tooth 2013 is arranged in the first avoiding groove 227, which is convenient for the up and down movement of the bag-breaking cone 201. A second guiding plate 221 and a second avoiding groove 220 are provided on the outer wall of the transmission cylinder 219. A second guiding groove 218 is provided on the inner wall of the sleeve 202. A second tooth 217 is arranged in the second avoiding groove 220, and the second guiding plate 221 is inserted into the second guiding groove 218, which is convenient for the up and down movement of the sleeve 202.

[0041] A first reset member 209 is provided at the bottom of the sleeve 202. The bottom end of the first reset member 209 is connected to the fixing plate. Under the action of an external force, the sleeve 202 slides downwards, and the first reset member 209 stores energy. When the external force is removed, the first reset member 209 releases energy and drives the sleeve 202 to slide upwards and reset. An installation rod 207 is provided at the bottom of the bag-breaking knife 206, and the bottom end of the installation rod 207 is fixed to the fixing plate. The first reset member 209 can be selected as a spring or other applicable components such as an air spring. In addition, the setting of the first reset member 209 is convenient for the reset of the sleeve 202. When the sleeve 202 resets, it will drive the ton bag containing the material to rise, disengaging from the insertion on the bag-breaking cone 201, which is convenient for the removal of the ton bag.

[0042] As Figure 1 and Figure 9 shown, the bag-breaking mechanism 2 further includes a fixing cylinder and a filter screen 211. The fixing cylinder is arranged at the top of the silo 1, and the filter screen 211 is rotatably arranged on the fixing cylinder. The filter screen 211 is annular, and the filter screen 211 is arranged around the fixing plate. The filter screen 211 can rotate relative to the fixing plate, and the fixing plate is connected to the fixing cylinder. The setting of the filter screen 211 can filter out the coagulated blocks in the material.

[0043] A guiding member 229 is provided on the fixing plate. The guiding member 229 is cylindrical. The guiding member 229 is fixed to the fixing cylinder 212 through a connecting rod 216. A guiding cone 230 is provided at the top of the guiding member 229. The outer diameter of the guiding member 229 is the same as the diameter of the fixing plate. A plurality of first through holes 231 and a plurality of second through holes 232 are formed in the guiding cone 230. The first through holes 231 correspond to the fixing rods 208 one by one, and the second through holes 232 correspond to the first reset members 209 one by one. The fixing rods 208 are inserted into the corresponding first through holes 231, and the first reset members 209 are inserted into the corresponding second through holes 232. The setting of the guiding member 229 can prevent the material from falling on the fixing plate and being unable to be filtered.

[0044] As a preferred solution, a first crushing plate 210 is provided on the fixed cylinder 212. The bottom surface of the first crushing plate 210, the inner side wall of the fixed cylinder 212, the side wall of the material guiding member 229 and the top surface of the filter net 211 enclose a crushing chamber. The crushing chamber has a feed inlet and a crushed material outlet. Along the rotation direction of the filter net 211, the height of the crushing chamber gradually decreases from the feed inlet to the crushed material outlet; a second crushing plate is provided on the filter net 211. A connecting block 214 is provided at a position near the bottom end of the second crushing plate 213. A second reset member 215 is provided between the connecting block 214 and the fixed cylinder. When the second reset member 215 is in a natural state, the top end of the second crushing plate 213 is provided above the filter net 211, and the top end of the second crushing plate 213 is lower than the height of the feed inlet. In addition, a driving motor is provided at the bottom of the fixed cylinder 212, and the driving motor can drive the filter net 211 to rotate. When the filter net 211 rotates, the second crushing plate will rotate with the filter net 211, thereby pushing the agglomerates of the material filtered out by the filter net 211 into the crushing chamber and then coming out from the crushing opening. Since the height of the crushed material outlet is small, under the extrusion of the second crushing plate, the agglomerates of the material will be broken into usable materials.

[0045] Finally, the conveying mechanism includes a screw feeder, which is connected to a feeding pipe 6. A vibration motor 8 is provided on the feeding pipe 6; the safety feeding device further includes an alarm mechanism 7, and the alarm mechanism 7 is connected to the control mechanism 5. The control mechanism 5 can receive the signal of the metering mechanism 3 and control the alarm mechanism 7 to give an alarm.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety feeding device, characterized in that, Comprising: A silo (1) with an open top, and a discharge port is provided at the bottom of the silo (1); A bag-breaking mechanism (2) is provided at the top of the silo (1), including a sliding baffle and a bag-breaking assembly. The baffle can be slid to be located above the bag-breaking assembly to shield the bag-breaking assembly, or the baffle can be slid to be located below the bag-breaking assembly to facilitate bag-breaking by the bag-breaking mechanism (2); A metering mechanism (3) is connected to the silo (1) for weighing the materials in the silo (1); A conveying mechanism (4) has a feeding port and a material discharging port. The feeding port is connected to the discharge port, and the conveying mechanism can convey the materials entering from the feeding port to the material discharging port and discharge them; A control mechanism (5) is respectively connected to the metering mechanism (3) and the conveying mechanism (4). The control mechanism (5) can receive the signal from the metering mechanism (3) and control the opening or closing of the conveying mechanism (4); The bag-breaking assembly includes a bag-breaking cone (201) and a plurality of bag-breaking knives (206) arranged around the bag-breaking cone (201). The tip of the bag-breaking cone (201) is located above the bag-breaking knives (206); the baffle includes a retaining ring (203), a sleeve (202) and a plurality of baffle plates (204). The plurality of baffle plates (204) are arranged around the sleeve (202). The other end of the baffle plate (204) is connected to the retaining ring (203) relative to the end connected to the sleeve (202). A strip-shaped hole (205) is formed in the baffle plate (204). The baffle plate (204) and the bag-breaking knife (206) are in one-to-one correspondence. The bag-breaking cone (201) is inserted into the sleeve (202). In the initial state, the bag-breaking cone (201) is received in the sleeve (202), and each bag-breaking knife (206) is located below the corresponding baffle plate (204); when the baffle slides down, the bag-breaking cone (201) extends out of the sleeve (202), and each bag-breaking knife (206) passes through the corresponding strip-shaped hole (205) and extends above the baffle plate (204); The bag-breaking cone (201) includes a cone head (2011) and an insertion rod (2012). The diameter of the insertion rod (2012) is smaller than the inner diameter of the sleeve (202). A first tooth (2013) is axially provided on the insertion rod (2012). A second tooth (217) is axially provided in the sleeve (202). A rotatable transmission gear (225) is arranged between the insertion rod (2012) and the sleeve (202). One side of the transmission gear (225) meshes with the first tooth (2013), and the other side of the transmission gear (225) meshes with the second tooth (217); The bag-breaking mechanism (2) further includes a transmission cylinder (219). The outer diameter of the transmission cylinder (219) is the same as the inner diameter of the sleeve (202), and the inner diameter of the transmission cylinder (219) is the same as the diameter of the insertion rod (2012). The transmission cylinder (219) is inserted into the sleeve (202), and the insertion rod (2012) is inserted into the transmission cylinder (219). An installation groove (224) is provided at the top of the transmission cylinder (219), and a rotatable pivot rod (228) is arranged in the installation groove (224). The transmission gear (225) is arranged on the pivot rod (228). A fixed rod (208) is provided at the bottom of the transmission cylinder (219), and a fixed plate is arranged at the bottom of the fixed rod (208), and the fixed plate is fixedly arranged. First guiding grooves (226) and first avoiding grooves (227) are provided on the side wall of the inner hole of the transmission cylinder (219). A first guiding plate (2014) is arranged on the side wall of the insertion rod (2012), and the first guiding plate (2014) is inserted into the first guiding grooves (226). The first tooth (2013) is arranged in the first avoiding groove (227). Second guiding plates (221) and second avoiding grooves (220) are provided on the outer wall of the transmission cylinder (219). Second guiding grooves (218) are provided on the inner wall of the sleeve (202). The second tooth (217) is arranged in the second avoiding groove (220), and the second guiding plate (221) is inserted into the second guiding grooves (218). A first reset member (209) is provided at the bottom of the sleeve (202), and the bottom end of the first reset member (209) is connected to the fixed plate. Under the action of an external force, the sleeve (202) slides downwards, and the first reset member (209) stores energy. When the external force is removed, the first reset member (209) releases energy and drives the sleeve (202) to slide upwards and reset. An installation rod (207) is provided at the bottom of the bag-breaking knife (206), and the bottom end of the installation rod (207) is fixed to the fixed plate.

2. The safety feeding device according to claim 1, characterized in that: The bag-breaking mechanism (2) further includes a fixed cylinder (212) and a filter screen (211). The fixed cylinder (212) is arranged at the top of the material bin (1), and the filter screen (211) is rotatably arranged on the fixed cylinder (212). The filter screen (211) is annular, and the filter screen (211) is arranged around the fixed plate. The filter screen can rotate relative to the fixed plate, and the fixed plate is connected to the fixed cylinder.

3. The safety feeding device according to claim 2, characterized in that: A material guiding member (229) is provided on the fixed plate. The material guiding member (229) is cylindrical, and a material guiding cone (230) is provided at the top of the material guiding member (229). The outer diameter of the material guiding member (229) is the same as the diameter of the fixed plate. A plurality of first through holes (231) and a plurality of second through holes (232) are formed in the material guiding cone (230). The first through holes (231) correspond to the fixing rods (208) one by one, and the second through holes (232) correspond to the first reset members (209) one by one. The fixing rods (208) are inserted into the corresponding first through holes (231), and the first reset members (209) are inserted into the corresponding second through holes (232).

4. The safety feeding device according to claim 3, characterized in that: A first crushing plate (210) is provided on the fixed cylinder (212). The bottom surface of the first crushing plate (210), the inner side wall of the fixed cylinder (212), the side wall of the material guiding member (229), and the top surface of the filter screen (211) enclose a crushing chamber. The crushing chamber has a feed inlet and a crushed material outlet. Along the rotation direction of the filter screen (211), the height of the crushing chamber gradually decreases from the feed inlet to the crushed material outlet; a second crushing plate is provided on the filter screen (211). A connecting block (214) is provided at a position near the bottom end of the second crushing plate (213). A second reset member (215) is provided between the connecting block (214) and the fixed cylinder. When the second reset member (215) is in a natural state, the top end of the second crushing plate (213) is provided above the filter screen (211), and the top end of the second crushing plate (213) is lower than the height of the feed inlet.

5. The safety feeding device according to claim 1, characterized in that: The conveying mechanism includes a screw feeder, and a feeding pipe (6) is connected to the screw feeder. A vibration motor (8) is provided on the feeding pipe (6); the safety feeding device further includes an alarm mechanism (7). The alarm mechanism (7) is connected to the control mechanism (5). The control mechanism (5) can receive the signal of the metering mechanism (3) and control the alarm mechanism (7) to give an alarm.

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