Discharging device

Abstract

The utility model provides a blanking device. The discharging device comprises a storage bin, the storage bin is provided with a feeding port and two discharging pipes, an inlet of each discharging pipe is communicated with the interior of the storage bin, and an outlet of each discharging pipe is arranged in an openable and closable mode. The driving mechanism is arranged in the storage bin; the two material conveying mechanisms are arranged corresponding to the two discharging pipes correspondingly, and the two material conveying mechanisms are configured to be used for conveying materials in the material storage bin to the two discharging pipes correspondingly; wherein the material conveying mechanism comprises rotating shafts and spiral blades connected to the peripheries of the rotating shafts, the spiral blades are located in the material storage bin, the driving mechanism is used for driving the two rotating shafts to rotate relative to the material storage bin, and the screw pitches of the two spiral blades are different. According to the technical scheme, the problem that the blanking precision of materials is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of material conveying, and particularly relates to a blanking device. Background Technique

[0002] A blanking device is a device used in industrial production to control the release of materials from a storage container according to a predetermined quantity or speed, and is widely used in the field of metering machinery. When the materials conveyed by the blanking device are powder materials or granular materials, many factors will cause the weight per unit volume of the materials to change. For example, there are unfilled spaces between the particles of granular materials, and there are also unfilled spaces between the particles of powder materials. Such spaces change with the position and state of the materials, and due to the different particle sizes of powder materials and granular materials (the particle size of granular materials is larger than that of powder materials), the unfilled spaces between the particles of granular materials and the unfilled spaces between the particles of powder materials are usually different. In this way, it is difficult for the blanking device to accurately release the materials according to the set weight, resulting in a low blanking accuracy of the materials.

[0003] In the prior art, a weight sensor is added to the blanking device to monitor and control the blanking process in order to solve the problem of low accuracy caused by the blanking of materials with different particle sizes by the same blanking device. However, there is a certain degree of uncontrollability in the final stage of material blanking, and the data feedback and closed-loop control of the weight sensor are difficult to effectively improve the blanking accuracy of the materials. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a blanking device to solve the problem of low blanking accuracy of materials in the prior art.

[0005] To achieve the above purpose, the utility model provides a blanking device, which includes a storage bin, an inlet and two discharge pipes are arranged on the storage bin, the inlets of the discharge pipes are communicated with the inside of the storage bin, and the outlets of the discharge pipes are arranged in an openable and closable manner; a driving mechanism is arranged on the storage bin; two conveying mechanisms are respectively arranged corresponding to the two discharge pipes, and both of the two conveying mechanisms are configured to convey the materials in the storage bin to the two discharge pipes respectively; wherein, the conveying mechanism includes a rotating shaft and a spiral blade connected to the outer circumference of the rotating shaft, each spiral blade is located in the storage bin, the driving mechanism is used to drive the two rotating shafts to rotate relative to the storage bin, and the pitches of the two spiral blades are different.

[0006] Further, the discharge pipe is a cylindrical structure with one end open and one end closed, the open end of the discharge pipe is communicated with the inside of the storage bin, and an outlet is arranged on the circumferential side wall of the discharge pipe; a sealing sleeve is arranged on the outer circumference of each discharge pipe, a discharge port is arranged on the circumferential side wall of the sealing sleeve, and the sealing sleeve is rotatably arranged relative to the corresponding discharge pipe so that the discharge port can coincide or be misaligned with the corresponding outlet.

[0007] Further, the blanking device further includes two first driving wheels and a first power input member. The two first driving wheels are respectively connected to the outer circumferences of the two closed sleeves. The two first driving wheels are in transmission connection and rotate synchronously. A first power input member is provided on any one of the two first driving wheels. Along the circumferential direction of the closed sleeve, the two discharge ports are respectively located on different sides of the two closed sleeves, and the two outlets are respectively located on the same side of the two discharge pipes; or, the two discharge ports are respectively located on the same side of the two closed sleeves, and the two outlets are respectively located on different sides of the two discharge pipes.

[0008] Further, a limiting groove is provided on the outer circumferential wall of the discharge pipe. The blanking device further includes an annular limiting member rotatably provided relative to the discharge pipe. The inner end of the annular limiting member is in limiting cooperation with the limiting groove, and the outer end of the annular limiting member is connected to the closed sleeve.

[0009] Further, the blanking device further includes: a driving part, arranged in the storage bin; two stirring mechanisms, located between the feed inlet and the two conveying mechanisms. The driving part is used to drive the two stirring mechanisms to stir the materials between the feed inlet and the two conveying mechanisms.

[0010] Further, the stirring mechanism includes: a support shaft rotatably arranged relative to the storage bin; a plurality of stirring blades. Along the circumferential direction of the support shaft, the plurality of stirring blades are sequentially connected to the outer circumference of the support shaft.

[0011] Further, the first end of each support shaft is rotatably connected to the storage bin, and the second end of each support shaft is rotatably connected to the storage bin and extends out of the storage bin; the driving part is installed on the outer wall of the storage bin. The driving part includes: two second driving wheels respectively connected to the outer circumferences of the second ends of the two support shafts. The two second driving wheels are in transmission connection; a second power input member is provided on the second end of at least one of the two support shafts.

[0012] Further, the blanking device further includes a guiding member located between the feed inlet and the two feeding mechanisms. The guiding member has two guiding surfaces connected to each other and arranged at an angle. Along the direction from the feed inlet to the feeding mechanism, the distance between the two guiding surfaces gradually increases.

[0013] Further, the guiding member is a prism. The prism extends along the axis of the rotating shaft, and the cross-section of the prism is a triangle.

[0014] Further, each rotating shaft passes through the storage bin and is rotatably connected to the storage bin; the driving mechanism is installed on the outer wall of the storage bin. The driving mechanism includes: two third driving wheels connected to the outer circumferences of the two rotating shafts. The two third driving wheels are in transmission connection and rotate synchronously; a third power input member is provided on any one of the two rotating shafts.

[0015] Applying the technical solution of the present utility model, by providing two rotatable rotating shafts with different pitches of the spiral blades on the two rotating shafts, and the outlets of the two discharge pipes being openable and closable. Since the pitches of the two spiral blades are different, when the two rotating shafts rotate by the same angle, the volumes of the materials conveyed by the two spiral blades will also be different. Among them, the spiral blade with a larger pitch can convey a larger volume of materials, while the spiral blade with a smaller pitch can convey a smaller volume of materials. When it is necessary to feed the material (i.e., powder or granular material), the outlet of the discharge pipe corresponding to the spiral blade with a larger pitch among the two spiral blades can be opened, so that the material can be conveyed to the outlet of the discharge pipe through the spiral blade with a larger pitch. In this way, large-volume feeding and rapid feeding of the material can be realized. When the feeding operation of the material (i.e., powder or granular material) is about to be completed, the outlet of the discharge pipe corresponding to the spiral blade with a smaller pitch among the two spiral blades is opened, and the outlet of the discharge pipe corresponding to the spiral blade with a larger pitch among the two spiral blades is closed. In this way, small-volume feeding and precise feeding of the material can be realized. In this way, compared with the prior art in which a spiral blade with a fixed pitch is selected to feed the material and a weight sensor is used to monitor the uncontrollable feeding process, the feeding device of the present utility model can select conveying blades with different pitches to feed the material at different feeding stages, so as to achieve the purpose of rapid feeding and precise feeding. In this way, the feeding accuracy of the material can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0017] Figure 1 shows a schematic structural view of an embodiment of the feeding device of the present utility model;

[0018] Figure 2 shows Figure 1 the front view of the feeding device of

[0019] Figure 3 shows Figure 2 a partial view of the feeding device of after cutting off at C-C (where both side outlets are in the closed state);

[0020] Figure 4 shows Figure 3 the structural view of the feeding device of after removing the storage bin (where both side outlets are in the closed state);

[0021] Figure 5 shows Figure 2Another partial view of the blanking device after cutting at C-C (where the left outlet is in the closed state and the right outlet is in the open state);

[0022] Figure 6 shows Figure 5 Schematic structural diagram of the blanking device after removing the storage bin (where the left outlet is in the closed state and the right outlet is in the open state);

[0023] Figure 7 shows Figure 2 Another partial view of the blanking device after cutting at C-C (where the left outlet is in the open state and the right outlet is in the closed state);

[0024] Figure 8 shows Figure 7 Schematic structural diagram of the blanking device after removing the storage bin (where the left outlet is in the open state and the right outlet is in the closed state);

[0025] Figure 9 shows Figure 2 Another partial view of the blanking device after cutting at C-C;

[0026] Figure 10 shows Figure 2 Another partial view of the blanking device after cutting at C-C (where the left outlet is in the open state and the right outlet is in the closed state);

[0027] Figure 11 shows Figure 3 Schematic structural diagram of the blanking device after removing the storage bin;

[0028] Figure 12 shows Figure 1 Schematic internal structure diagram of the blanking device from one perspective;

[0029] Figure 13 shows Figure 1 Schematic internal structure diagram of the blanking device from another perspective.

[0030] Among them, the above-mentioned drawings include the following reference numerals:

[0031] 1. Storage bin; 2. Feed inlet; 3. Discharge pipe; 4. Spiral blade; 5. Discharge outlet; 6. First transmission wheel; 7. First power input member; 8. Enclosure sleeve; 9. Stirring mechanism; 10. Driving part; 11. Stirring blade; 12. Support shaft; 13. Second transmission wheel; 14. Second power input member; 15. Flow guiding member; 16. Third transmission wheel; 17. Third power input member; 18. Driving mechanism; 19. Rotating shaft; 20. Outlet; 21. Flow guiding surface; 22. Ring-shaped limiting member. Specific embodiments

[0032] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0033] It should be noted that in the embodiments of the present utility model, the materials output by the blanking device can be granular materials or powder materials. Among them, the particle size of the granular materials is larger than that of the powder materials, and the unfilled space between the particles of the granular materials is larger than the unfilled space between the particles of the powder materials. In this way, for the same volume of granular materials and powder materials, the mass of the granular materials is less than the mass of the powder materials.

[0034] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 10 、 Figure 11 and Figure 12 shown, the embodiments of the present utility model provide a blanking device. The blanking device includes a storage bin 1, an inlet 2 and two discharge pipes 3 are provided on the storage bin 1. The inlets of the discharge pipes 3 communicate with the inside of the storage bin 1, and the outlets 20 of the discharge pipes 3 are provided in an openable and closable manner; a driving mechanism 18 is provided on the storage bin 1; two feeding mechanisms are respectively arranged corresponding to the two discharge pipes 3, and both feeding mechanisms are configured to respectively convey the materials in the storage bin 1 to the two discharge pipes 3; wherein, the feeding mechanism includes a rotating shaft 19 and a spiral blade 4 connected to the outer periphery of the rotating shaft 19. Each spiral blade 4 is located in the storage bin 1, and the driving mechanism 18 is used to drive the two rotating shafts 19 to rotate relative to the storage bin 1, and the pitches of the two spiral blades 4 are different.

[0035] In the above technical solution, by providing two rotatable rotating shafts 19, the pitches of the spiral blades 4 on the two rotating shafts 19 are different, and the outlets 20 of the two discharge pipes 3 are provided to be openable and closable. Since the pitches of the two spiral blades 4 are different, when the two rotating shafts 19 rotate by the same angle, the volumes of the materials conveyed by the two spiral blades 4 will also be different. Among them, the spiral blade 4 with a larger pitch can convey a larger volume of material, while the spiral blade 4 with a smaller pitch can convey a smaller volume of material; when it is necessary to discharge the material (i.e., powder or granular material), the outlet 20 of the discharge pipe 3 corresponding to the spiral blade 4 with a larger pitch among the two spiral blades 4 can be opened, so that the material can be conveyed to the outlet 20 of the discharge pipe 3 through the spiral blade 4 with a large pitch. In this way, large-volume discharging and rapid discharging of the material can be achieved; when the discharging operation of the material (i.e., powder or granular material) is about to be completed, the outlet 20 of the discharge pipe 3 corresponding to the spiral blade 4 with a smaller pitch among the two spiral blades 4 is opened, and the outlet 20 of the discharge pipe 3 corresponding to the spiral blade 4 with a larger pitch among the two spiral blades 4 is closed. In this way, small-volume discharging and precise discharging of the material can be achieved; in this way, compared with the prior art in which a spiral blade 4 with a fixed pitch is selected to discharge the material and a weight sensor is used to monitor the uncontrollable discharging process, the discharging device of the present utility model can select spiral blades 4 with different pitches to discharge the material at different discharging stages, so as to achieve the purpose of rapid discharging and precise discharging. In this way, the discharging accuracy of the material can be improved.

[0036] Specifically, in the embodiment of the present utility model, the material enters the storage bin 1 from the feed inlet 2. Under the action of gravity, the material falls onto the two feeding mechanisms. The driving mechanism 18 is used to drive the rotating shaft 19 to rotate. In this way, the spiral blade 4 can be driven to rotate, so that the spiral blade 4 drives the material to move along the axis direction of the rotating shaft 19, and thus the material can be conveyed to the discharge pipe 3.

[0037] It should be noted that in the embodiment of the present utility model, the powder usually refers to very fine particles in a powder form, and its particle size range can be from the micron level to dozens of microns; the granular material refers to an aggregate of larger particles, and the particle size is usually in the range of several hundred microns to several millimeters.

[0038] It should be noted that in the embodiment of the present utility model, the pitch refers to the axial distance between two adjacent helical lines in the spiral blade 4.

[0039] Preferably, in the embodiment of the present utility model, the feed inlet 2 is located above the two feeding mechanisms. In this way, the material can fall into the two feeding mechanisms through the feed inlet 2.

[0040] Preferably, in the embodiment of the present utility model, the driving mechanism 18 can drive the two rotating shafts 19 to rotate synchronously relative to the storage bin 1. In this way, on the one hand, no matter which one of the two discharge pipes 3 is opened, the material can be directly injected, and the phenomenon that the discharge pipe 3 does not discharge material in a certain period can be avoided; on the other hand, compared with setting two third power input members 17 to drive the two rotating shafts 19 to rotate respectively, by using one third power input member 17 to drive the two rotating shafts 19 to rotate synchronously, one third power input member 17 can be set less, thereby reducing the cost.

[0041] Specifically, in the embodiment of the present utility model, mounting holes and through holes are provided on the wall of the storage bin 1. The mounting holes and the through holes are respectively located on opposite sides of the storage bin 1. One end of the rotating shaft 19 is fixed in the mounting hole through a bearing. The inner ring of the bearing is rotationally connected to the rotating shaft 19, and the outer ring of the bearing is connected to the inner wall of the mounting hole. The other end of the rotating shaft 19 passes through the through hole and extends into the discharge pipe 3. In this way, the material in the storage bin 1 can be conveyed to the through hole by the spiral blade and discharged into the discharge pipe 3 from the through hole.

[0042] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 、 Figure 8 、 Figure 10 and Figure 12 As shown in

[0043] In the above technical solution, by rotating the closing sleeve 8, the discharge port 5 on the closing sleeve 8 and the outlet 20 of the discharge pipe 3 can be misaligned or coincided. When the discharge port 5 on the closing sleeve 8 rotates to be misaligned with the outlet 20 of the discharge pipe 3, the outlet 20 of the discharge pipe 3 is in a closed state, and the material is stored in the discharge pipe 3; when the discharge port 5 on the closing sleeve 8 rotates to coincide with the outlet 20 of the discharge pipe 3, the outlet 20 of the discharge pipe 3 is in an open state, and the material is conveyed to the outlet 20 of the discharge pipe 3 through the open end of the discharge pipe 3, and the material is discharged from the discharge port 5 to the blanking device.

[0044] Specifically, in the embodiment of the present utility model, the discharge port 5 and the outlet 20 of the discharge pipe 3 are equal in size and are both set as rectangles. In this way, the discharge port 5 can be adapted to the discharge pipe 3 to facilitate the discharge of the material from the discharge port 5.

[0045] like Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 and Figure 13 As shown, in the embodiment of the utility model, the unloading device also includes two first transmission wheels 6 and a first power input member 7. The two first transmission wheels 6 are respectively connected to the outer periphery of the two closed sleeves 8. The two first transmission wheels 6 are transmission connected and rotate synchronously. Any one of the two first transmission wheels 6 is provided with a first power input member 7. Along the circumference of the closed sleeve 8, the two discharge ports 5 are respectively located on different sides of the two closed sleeves 8, and the two outlets 20 are respectively located on the same side of the two discharge pipes 3.

[0046] In the above technical scheme, the first power input member 7 can be used to drive the two first transmission wheels 6 to rotate simultaneously, so that the two closing sleeves 8 can be driven to rotate simultaneously. Since the two discharge ports 5 are respectively located on different sides of the two closing sleeves 8, and the two outlets 20 are respectively located on the same side of the two discharge pipes 3, when one discharge port 5 coincides with the outlet 20 of the discharge pipe 3, the material is discharged from the discharge port 5. At this time, the other discharge port 5 is staggered with the outlet 20 of the discharge pipe 3 to close the discharge pipe 3. In this way, the two discharge pipes 3 can be interlocked, that is, one discharge pipe 3 is discharging material, and the other discharge pipe 3 is in a closed state, thereby preventing the occurrence of accidental material dropping.

[0047] It should be noted that, in the embodiment of the utility model, the two discharge ports 5 are respectively located on different sides of the two closed sleeves 8, which means that one discharge port 5 is located on the first side of the corresponding closed sleeve 8, and the other discharge port 5 is located on the second side of the corresponding closed sleeve 8. For example, when the two closed sleeves 8 are in a stationary state, the discharge port 5 of one of the closed sleeves 8 is located at the top position of the closed sleeve 8, and the discharge port 5 of the other closed sleeve 8 is located at a position other than the top, wherein the top refers to the uppermost surface of the closed sleeve 8.

[0048] It should be noted that, in the embodiment of the utility model, the two outlets 20 are respectively located on the same side of the two discharge pipes 3, which means that one outlet 20 is located on the first side of the corresponding discharge pipe 3, and the other outlet 20 is also located on the first side of the corresponding discharge pipe 3. For example, one of the outlets 20 is located at the bottom position of the discharge pipe 3, and the other outlet 20 is also located at the bottom position of the discharge pipe 3.

[0049] Preferably, in the embodiment of the present invention, the two outlets 20 are both located at the lower sides of the two discharge pipes 3 .

[0050] In one embodiment, the two discharge outlets 5 are respectively located on the same side of the two closed sleeves 8, and the two outlets 20 are respectively located on different sides of the two discharge pipes 3. It is also possible to achieve the discharge of one of the two discharge pipes 3 and the closing of the other discharge pipe 3 among the two discharge pipes 3.

[0051] Specifically, in the embodiment of the present invention, the first power input member 7 is arranged on the side of the closed sleeve 8 away from the storage bin 1. The first power input member 7 includes a connection disk connected to the closed sleeve 8 and two handles connected to the connection disk. By manually rotating the handles, the connection disk can be rotated, so that the closed sleeve 8 can be rotated.

[0052] In one embodiment, the first power input member 7 can also adopt a motor, and the output end of the motor is connected to the closed sleeve 8.

[0053] Specifically, in the embodiment of the present invention, the first transmission wheel 6 is a gear, and the two gears are meshed. In this way, when one first transmission wheel 6 rotates, the other first transmission wheel 6 meshes with it to drive the other first transmission wheel 6 to rotate.

[0054] Specifically, in the embodiment of the present invention, the two gears are of equal size, that is, parameters such as the number of teeth, modulus, diameter, and center distance of the two gears are equal.

[0055] In one embodiment, the two first transmission wheels 6 are belt wheels, and a transmission belt is sleeved on the two first transmission wheels 6, and the transmission between the two first transmission wheels 6 is realized through the transmission belt.

[0056] In one embodiment, the two first transmission wheels 6 can adopt sprockets, and the transmission between the two sprockets is realized through a transmission chain.

[0057] Such as Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 13 As shown in

[0058] In the above technical solution, when the closed sleeve 8 rotates, the closed sleeve 8 is likely to move on the discharge pipe 3, thereby generating a certain displacement. By providing the annular limiting member 22 on the limiting groove and connecting the annular limiting member 22 to the closed sleeve 8, in this way, it is possible to prevent the closed sleeve 8 from moving along the axis direction of the discharge pipe 3 on the discharge pipe 3 to avoid the closed sleeve 8 coming off the discharge pipe 3.

[0059] As Figure 1 , Figure 2 , Figure 8 , Figure 11 and Figure 12 shown, in an embodiment of the present utility model, the blanking device further includes: a driving part 10, disposed in the storage bin 1; two stirring mechanisms 9, located between the feeding port 2 and the two conveying mechanisms, and the driving part 10 is used to drive the two stirring mechanisms 9 to stir the materials between the feeding port 2 and the two conveying mechanisms.

[0060] In the above technical solution, the driving part 10 can drive the two stirring mechanisms 9 to rotate, so that the materials can be fully mixed, thereby avoiding the problem of poor blanking accuracy caused by material caking.

[0061] Preferably, in an embodiment of the present utility model, the two stirring mechanisms 9 are respectively arranged corresponding to the two material conveying mechanisms.

[0062] As Figure 1 , Figure 2 , Figure 4 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 shown, in an embodiment of the present utility model, the stirring mechanism 9 includes: a support shaft 12, rotatably arranged relative to the storage bin 1; a plurality of stirring blades 11, along the circumferential direction of the support shaft 12, and the plurality of stirring blades 11 are sequentially connected to the outer periphery of the support shaft 12.

[0063] In the above technical solution, when the support shaft 12 rotates, it can drive the plurality of stirring blades 11 to rotate, so that the materials can come into contact with the plurality of stirring blades 11, so as to achieve the effect of stirring the materials, thereby making the materials more evenly distributed in the storage bin 1.

[0064] Specifically, in an embodiment of the present utility model, in one stirring mechanism 9, the number of stirring blades 11 is 2.

[0065] As Figure 1 , Figure 2 , Figure 4 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13As shown, in the embodiment of the utility model, the first end of each support shaft 12 is rotatably connected to the storage bin 1, and the second end of each support shaft 12 is rotatably connected to the storage bin 1 and extends out of the storage bin 1; the driving unit 10 is installed on the outer wall of the storage bin 1, and the driving unit 10 includes: two second transmission wheels 13, which are respectively connected to the outer periphery of the second ends of the two support shafts 12, and the two second transmission wheels 13 are transmission-connected; a second power input member 14, and a second power input member 14 is provided on the second end of any one of the two support shafts 12.

[0066] In the above technical solution, by starting the second power input member 14, the support shaft 12 can be rotated, so that the second transmission wheel 13 can be driven to rotate, thereby driving another second transmission wheel 13 to rotate, so that another support shaft 12 can be rotated.

[0067] In one embodiment, a second power input member 14 is disposed on the second ends of the two support shafts 12 .

[0068] Specifically, in the embodiment of the present invention, the first end and the second end of the support shaft 12 are fixed to the wall of the storage bin 1 through two bearings respectively, so as to realize the rotation connection between the support shaft 12 and the storage bin 1.

[0069] Preferably, in the embodiment of the utility model, the two second transmission wheels 13 are belt pulleys, and a transmission belt is sleeved on the two second transmission wheels 13 , so that transmission between the two second transmission wheels 13 is achieved through the transmission belt.

[0070] Specifically, in an embodiment of the utility model, the second power input member 14 is arranged on a side away from the storage bin 1, and the second power input member 14 includes a turntable and two handles. One end of the turntable is a closed structure and is fixedly connected to the two handles, and the other end of the turntable is connected to the outer periphery of the second end of the support shaft 12. In this way, the turntable can be rotated by manually turning the handle, thereby causing the support shaft 12 to rotate.

[0071] In one embodiment, the second power input member 14 may also be a motor, and the motor is connected to the support shaft 12 .

[0072] In one embodiment, the two second transmission wheels 13 may be sprocket wheels, and the transmission between the two sprocket wheels is achieved through a transmission chain.

[0073] like Figure 1 , Figure 4 , Figure 8 , Figure 11 and Figure 13As shown in the figure, in the embodiment of the present utility model, the blanking device further includes a diversion member 15. The diversion member 15 is located between the feed inlet 2 and the two material conveying mechanisms. The diversion member 15 has two diversion surfaces 21 that are connected and arranged at an angle. Along the direction from the feed inlet 2 to the material conveying mechanisms, the distance between the two diversion surfaces 21 gradually increases.

[0074] In the above technical solution, the materials fall onto the two material conveying mechanisms through the two diversion surfaces 21 on the diversion member 15 respectively. In this way, the probability of the materials falling between the two material conveying mechanisms can be reduced, so as to facilitate the conveying of the materials.

[0075] Specifically, in the embodiment of the present utility model, the diversion member 15 is arranged above the middle position between the two material conveying mechanisms.

[0076] As Figure 6 and Figure 11 shown, in the embodiment of the present utility model, the diversion member 15 is a prism. The prism extends along the axis of the rotating shaft 19, and the cross-section of the prism is triangular.

[0077] Through the above setting, the materials are conveyed onto the two material conveying mechanisms through the outer surfaces on both sides of the prism.

[0078] It should be noted that in the embodiment of the present utility model, the cross-section of the prism is perpendicular to the axis of the rotating shaft 19.

[0079] In one embodiment, the cross-section of the diversion member 15 can also be set as a rhombus.

[0080] As Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 11 and Figure 12 shown, in the embodiment of the present utility model, each rotating shaft 19 passes through the storage bin 1 and is rotatably connected to the storage bin 1; the driving mechanism 18 is installed on the outer wall of the storage bin 1. The driving mechanism 18 includes: two third transmission wheels 16, which are connected to the outer periphery of the two rotating shafts 19. The two third transmission wheels 16 are in transmission connection and rotate synchronously; a third power input member 17, and the third power input member 17 is provided on any one of the two rotating shafts 19.

[0081] In the above technical solution, the third power input member 17 can be used to drive one of the two rotating shafts 19 to rotate, so as to drive the third transmission wheel 16 on the rotating shaft 19 to rotate. In this way, the other rotating shaft 19 can be driven to rotate synchronously through the other third transmission wheel 16, so that the number of the third power input members 17 can be reduced to lower the production cost.

[0082] Specifically, in the embodiment of the present invention, the two third transmission wheels 16 are belt wheels, and a transmission belt is sleeved on the two third transmission wheels 16 , so that transmission between the two third transmission wheels 16 is achieved through the transmission belt.

[0083] Specifically, in an embodiment of the utility model, the third power input member 17 is arranged on a side away from the storage bin 1, and the third power input member 17 includes a turntable and two handles. One end of the turntable is a closed structure and is fixedly connected to the two handles, and the other end of the turntable is connected to the outer periphery of the second end of the rotating shaft 19. In this way, the turntable can be rotated by manually turning the handle, so that the support shaft 12 can be rotated.

[0084] In one embodiment, the third power input member 17 may also be a motor, and the motor is connected to the rotating shaft 19 .

[0085] In one embodiment, the two third transmission wheels 16 may be sprocket wheels, and the transmission between the two sprocket wheels is achieved through a transmission chain.

[0086] In one embodiment, the two third transmission wheels 16 may also be two meshing gears.

[0087] Specifically, Figure 1 As shown, in the embodiment of the utility model, the silo wall in the middle position of the storage silo 1 is inclined toward the position of the feed port 2, so that the weight of the material transported from above the feed port 2 can be shared, avoiding the powder at the bottom of the storage silo 1 from being pressed too tightly and affecting the discharge.

[0088] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: By providing two rotatable rotating shafts, the pitches of the spiral blades on the two rotating shafts are different, and the outlets of the two discharge pipes are provided to be openable and closable. Since the pitches of the two spiral blades are different, when the two rotating shafts rotate by the same angle, the volumes of the materials conveyed by the two spiral blades will also be different. Among them, the spiral blade with a larger pitch can convey a larger volume of materials, while the spiral blade with a smaller pitch can convey a smaller volume of materials; when it is necessary to discharge the material (i.e., powder or granular material), the outlet of the discharge pipe corresponding to the spiral blade with a larger pitch among the two spiral blades can be opened, so that the material can be conveyed to the outlet of the discharge pipe through the spiral blade with a larger pitch. In this way, large-volume discharging and rapid discharging of the material can be achieved; when the discharging operation of the material (i.e., powder or granular material) is about to be completed, the outlet of the discharge pipe corresponding to the spiral blade with a smaller pitch among the two spiral blades is opened, and the outlet of the discharge pipe corresponding to the spiral blade with a larger pitch among the two spiral blades is closed. In this way, small-volume discharging and precise discharging of the material can be achieved; thus, compared with the prior art in which a spiral blade with a fixed pitch is selected to discharge the material and a weight sensor is used to monitor the uncontrollable discharging process, the discharging device of the present utility model can select conveying blades with different pitches to discharge the material at different discharging stages, so as to achieve the purpose of rapid discharging and precise discharging. In this way, the discharging accuracy of the material can be improved.

[0089] The foregoing is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A blanking device, characterized in that, Comprising: A storage bin (1), on which a feed inlet (2) and two discharge pipes (3) are provided. The inlets of the discharge pipes (3) communicate with the interior of the storage bin (1), and the outlets (20) of the discharge pipes (3) are provided in an openable and closable manner. A driving mechanism (18), arranged on the storage bin (1). Two material conveying mechanisms, respectively corresponding to the two discharge pipes (3). Both of the two material conveying mechanisms are configured to convey the materials in the storage bin (1) to the two discharge pipes (3) respectively. Among them, the material conveying mechanism includes a rotating shaft (19) and a spiral blade (4) connected to the outer periphery of the rotating shaft (19). Each spiral blade (4) is located in the storage bin (1), and the driving mechanism (18) is used to drive the two rotating shafts (19) to rotate relative to the storage bin (1). The pitches of the two spiral blades (4) are different.

2. The blanking device according to claim 1, characterized in that, The discharge pipe (3) is a cylindrical structure with one end open and one end closed. The open end of the discharge pipe (3) communicates with the interior of the storage bin (1), and the outlet (20) is provided on the circumferential side wall of the discharge pipe (3). A closed sleeve (8) is provided on the outer periphery of each discharge pipe (3). A discharge port (5) is provided on the circumferential side wall of the closed sleeve (8). The closed sleeve (8) is rotatably arranged relative to the corresponding discharge pipe (3) so that the discharge port (5) can coincide with or be misaligned with the corresponding outlet (20).

3. The blanking device according to claim 2, characterized in that, The blanking device further includes two first transmission wheels (6) and a first power input member (7). The two first transmission wheels (6) are respectively connected to the outer peripheries of the two closed sleeves (8). The two first transmission wheels (6) are in transmission connection and rotate synchronously. The first power input member (7) is provided on any one of the two first transmission wheels (6). Along the circumference of the closed sleeve (8), the two discharge ports (5) are respectively located on different sides of the two closed sleeves (8), and the two outlets (20) are respectively located on the same side of the two discharge pipes (3); or, the two discharge ports (5) are respectively located on the same side of the two closed sleeves (8), and the two outlets (20) are respectively located on different sides of the two discharge pipes (3).

4. The blanking device according to claim 2, wherein A limiting groove is provided on the outer wall of the circumferential direction of the discharge pipe (3). The blanking device further includes an annular limiting member (22) rotatably arranged relative to the discharge pipe (3). The inner end of the annular limiting member (22) is in limiting cooperation with the limiting groove, and the outer end of the annular limiting member (22) is connected to the closed sleeve (8).

5. The blanking device according to any one of claims 1 to 4, characterized in that, The blanking device further includes: A driving part (10), arranged on the storage bin (1). Two stirring mechanisms (9), located between the feed inlet (2) and the two conveying mechanisms. The driving part (10) is used to drive the two stirring mechanisms (9) to stir the materials between the feed inlet (2) and the two conveying mechanisms.

6. The blanking device according to claim 5, characterized in that, The stirring mechanism (9) includes: A support shaft (12), rotatably arranged relative to the storage bin (1). A plurality of stirring blades (11) are sequentially connected to the outer periphery of the support shaft (12) along the circumferential direction of the support shaft (12).

7. The blanking device according to claim 6, characterized in that The first end of each support shaft (12) is rotatably connected to the storage bin (1), and the second end of each support shaft (12) is rotatably connected to the storage bin (1) and extends out of the storage bin (1); The driving part (10) is installed on the outer wall of the storage bin (1), and the driving part (10) includes: Two second transmission wheels (13) are respectively connected to the outer periphery of the second ends of the two support shafts (12), and the two second transmission wheels (13) are in transmission connection; A second power input member (14) is provided on the second end of at least one of the two support shafts (12).

8. The blanking device according to any one of claims 1 to 4, characterized in that, The blanking device further includes a diversion member (15), the diversion member (15) is located between the feed port (2) and the two conveying mechanisms, and the diversion member (15) has two diversion surfaces (21) that are connected and arranged at an angle, and along the direction from the feed port (2) to the conveying mechanism, the distance between the two diversion surfaces (21) gradually increases.

9. The blanking device according to claim 8, characterized in that, The diversion member (15) is a prism, the prism extends along the axis of the rotating shaft (19), and the cross-section of the prism is triangular.

10. The blanking device according to claim 9, wherein, Each rotating shaft (19) passes through the storage bin (1) and is rotatably connected to the storage bin (1); The driving mechanism (18) is installed on the outer wall of the storage bin (1), and the driving mechanism (18) includes: Two third transmission wheels (16) are connected to the outer periphery of the two rotating shafts (19), and the two third transmission wheels (16) are in transmission connection and rotate synchronously; A third power input member (17) is provided on any one of the two rotating shafts (19).

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