Kitchen waste foreign matter picking-out device and method

Abstract

The invention provides a kitchen waste foreign matter picking-out device and method. The kitchen waste foreign matter picking-out device comprises a transmission system and a working system. The transmission system is mainly used for transmitting force generated by the motor to the working system in three different modes, so that the working system generates three different working modes of grabbing, rotating and rotary grabbing. And the working system is mainly used for grabbing foreign matters in the kitchen waste through three different working modes. The transmission system has the beneficial effects that the transmission system can enable force generated by a single motor to generate two motions of rotation and grabbing by changing the position of the sliding block, and then the cost is saved. According to the working system, by means of cooperation of the flexible cable and the magnetic material, the foreign matter is difficult to leak out when the working system grabs the foreign matter, and then the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the field of restaurant and kitchen waste equipment, and in particular relates to a restaurant and kitchen waste foreign matter picking device and method. Background Art

[0002] With the improvement of science and technology and people's living standards, more and more kitchen waste is generated. Therefore, in order to be more environmentally friendly, it is necessary to classify kitchen waste. Garbage classification is an important step in kitchen waste recycling. There will be foreign objects such as plastic bottles, cans, plastic bags, bones, etc. in kitchen waste. Picking out these foreign objects from kitchen waste has become an important step in garbage classification. If manual classification is used, since kitchen waste will emit unpleasant air and toxic and harmful gases that threaten people's health, using mechanical claws to classify them will keep humans out of danger. However, there are two major problems with mechanical claw garbage classification: 1 When the mechanical claw picks up foreign objects, most of the foreign objects are irregular, and foreign objects are easy to fall off from the mechanical claw, resulting in a decrease in efficiency. 2 There may be a large number of plastic belts in the kitchen waste, which are difficult for the mechanical claw to pick up and easy to entangle the mechanical claw. If you want to remove plastic products such as plastic belts, you need to go to the site manually to operate, which reduces work efficiency and puts the staff in a polluted environment. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a device and method for picking out foreign matter from kitchen waste.

[0004] According to a device and method for picking out foreign matter from kitchen waste provided by the present invention, the main technical scheme adopted is: including a multi-position transmission mechanism, a flexible net mechanism, and a folding arm mechanical claw mechanism; the multi-position transmission mechanism is located in the middle of the device, which is connected to the folding arm mechanical claw mechanism, and the folding arm mechanical claw mechanism is connected to the flexible net mechanism.

[0005] The technical solution adopted by the present invention also includes the following components and their auxiliary solutions: The multi-position transmission mechanism comprises: a transmission shaft I, a transmission shaft II, a sliding block, a planetary gear train, and a boss.

[0006] The planetary gear system includes a sun gear, multiple planetary gears, a planetary carrier, and a ring gear. The sun gear is located in the middle of the planetary gear system, with planetary gears on the outside and ring gears on the outside of the planetary gears. The sun gear is hollow in the middle and meshes with the planetary gears on the outside. Multiple sun gear internal spline grooves are arranged on the inside of the sun gear. The planetary gears are fixed on the planetary carrier, and the ring gear is fixed on the motor through four steel shafts. The sun gear, planetary gears, ring gears and transmission shaft are coaxial; transmission shaft I is a hollow shaft with internal spline grooves on the inside and external splines on the outside. Transmission shaft I is connected to the power output shaft of the motor through the internal spline grooves and is coaxial with the power output shaft of the motor; the diameter of the external spline of transmission shaft I is smaller than the diameter of the hollow hole of the sun gear, and transmission shaft I is coaxial with the sun gear and passes through the sun gear; the outer side of the upper half of the transmission shaft II is provided with splines and the lower half is provided with threads and is coaxial with the transmission shaft I and maintains a meshing clutch distance at the bottom of the transmission shaft I.

[0007] The boss includes an internal threaded hole of the boss, a slide rail, and a groove. The boss is an isosceles trapezoidal rotation body, whose upper and lower bottom surfaces are perpendicular to the transmission shaft II. There is a threaded hole in the middle of the boss that vertically passes through the upper and lower bottom surfaces and is concentric with the upper and lower bottom surfaces and coaxial with the transmission shaft II. The diameter of the boss threaded hole is based on the thread of the transmission shaft II and the threaded hole of the boss to achieve a threaded connection. The transmission shaft II passes through the middle of the boss threaded hole. The side of the boss forms a certain angle with the upper and lower bottom surfaces. A slide rail is also provided on the side. The angle between the slide rail and the transmission shaft II is equal to the angle between the side of the boss and the transmission shaft. A groove is provided in the middle of the slide rail.

[0008] The folding arm mechanical claw mechanism comprises a plurality of folding arms and a mechanical claw bracket.

[0009] The shape of the mechanical claw bracket is cylindrical, and there are three evenly distributed grooves on its outer circumference. Each groove has an axis, which is perpendicular to the transmission shaft and connected to the left and right ends of the groove. The mechanical claw bracket is coaxial with the transmission shaft II; a hole is provided in the middle of the mechanical claw bracket, and the hole is coaxial with the transmission shaft II. The inner side of the hole is provided with an inner spline groove of the mechanical claw bracket, and the diameter of the hole is larger than the outer spline diameter of the transmission shaft II, and the transmission shaft II passes through the hole; the upper side of the mechanical claw bracket is connected to the planetary frame; the folding arm includes a connecting hole, arm section I, arm section II, arm section III, arm section IV, and a sliding pin. There is a connecting hole at the top of the arm section I so that The axis on the mechanical claw bracket just passes through the connecting hole. There is an inner bend between arm section I and arm section II, and the inner bend angle between them is a fixed value of a certain angle. There is a sliding pin perpendicular to the folding arm at the connection between arm section I and arm section II. The diameter of the sliding pin is equal to the width of the slide rail groove and passes through the groove. There is an outer bend between arm section II and folding arm III, and the outer bend angle between them is a fixed value of a certain angle. There is an inner bend between arm section III and arm section IV, and the inner bend angle between them is a fixed value of a certain angle. There is a threaded groove with a specific rotation direction on the outer side of arm section IV. When the folding arm mechanical claw is closed, the ends of the three folding arms can be closed.

[0010] The flexible net mechanism is composed of multiple flexible ropes of different lengths and magnetic materials. The material of the flexible rope is a material with good flexibility. One end of the flexible rope is connected to the arm section III of the folding arm and the other end is connected to the magnetic material, and multiple flexible ropes are equidistantly distributed. The length of the flexible rope becomes shorter and shorter from top to bottom. When the folding arm mechanical claw is closed, the magnetic materials on the flexible rope can just attract each other and be connected as a whole. The length ratio of each flexible rope is equal to the distance ratio between the connection between the flexible rope and the arm section III and the extension line of the axis of the transmission shaft when the mechanical claw is closed.

[0011] The slider is a hollow cylinder, coaxial with transmission shaft I and transmission shaft II, and an internal spline groove is provided inside the slider and an external spline is provided outside the slider. The internal spline groove is meshed with the external splines of transmission shaft I and transmission shaft II so that it can move up and down along the transmission shaft, and the external spline enables it to mesh with the internal spline groove of the sun gear and the internal spline groove of the mechanical claw bracket; the engagement and clutch distance simultaneously ensures the following three conditions: the slider can simultaneously ensure engagement with the internal key groove of the sun gear and transmission shaft II, the slider can simultaneously ensure engagement with the transmission shaft I and the internal key groove of the mechanical claw bracket, and the slider does not mesh with the internal key groove of the mechanical claw bracket and the internal spline groove of the sun gear when ensuring simultaneous engagement with transmission shafts I and II.

[0012] A method for picking out foreign matter from kitchen waste, comprising the following working methods: 1) When the device is used to pick up hard foreign objects, the slider is pushed to the middle position so that it does not contact the spline groove in the sun gear and the spline groove in the mechanical claw and only meshes with the rotating shaft I and the transmission shaft II. When picking up foreign objects, the folding arm is closed, and the flexible rope in the middle of the folding arm is connected as a whole. The foreign objects in the middle of the folding arm are not easy to fall out under the obstruction of the flexible rope. When the foreign objects need to be released, the folding arm is opened, and the connected flexible ropes are separated, and the foreign objects in the middle can fall out, so that the folding arm mechanical claw can grasp and release hard foreign objects by opening and closing without rotating; 2) When the function of the device is to pick up foreign objects that are easy to be entangled, the slider is slid into the spline groove in the mechanical claw bracket, and the transmission shaft II and the mechanical claw bracket obtain the same rotation speed as the transmission shaft I. When the foreign object needs to be entangled, the folding arm mechanical claw rotates in a specific direction under the premise that the claw tip is closed, and the mechanical claw thread at the end will roll up the plastic products in the kitchen waste and wrap them around the folding arm. When the foreign object needs to fall off, the folding arm rotates in the opposite direction and the foreign object will fall off, so that the outer side of the arm section IV has a threaded groove with a specific rotation direction to entangle or release the foreign object; 3) When the function of the device is to pick up easily dispersed foreign matter, the slider is pushed to the spline groove in the sun gear, and the slider is kept engaged with the transmission shaft I and the transmission shaft II. The flexible rope in the middle of the folding arm is connected as a whole. During the rotation process, the folding arm can gather easily dispersed foreign matter. The foreign matter in the middle of the folding arm is not easy to fall out due to the obstruction of the flexible rope, so that the folding arm mechanical claw rotates in a specific direction and opens and closes, thereby realizing the picking of easily dispersed garbage.

[0013] The beneficial effects produced by the present invention are: 1. The transmission system described in the technical solution of the present invention can change the position of the slider to realize the two movements of rotation and grasping with the force generated by a single motor. Pushing the slider into the spline groove in the sun gear can make the mechanical claw generate a rotational grasping movement, and can pick out plastic products such as plastic bags and plastic films; pushing the slider between the transmission shaft I and the transmission shaft II can make the mechanical claw generate a grasping movement to pick out foreign objects such as cans and bones in kitchen waste; pushing the slider into the spline groove in the mechanical claw bracket can make the mechanical claw generate a rotational movement, and grab foreign objects and plastic products at the same time, so that a single motor can achieve three movement modes.

[0014] 2. The working system described in the technical solution of the present invention utilizes the combination of flexible ropes and magnetic materials to make it difficult for foreign objects to leak out when the working system grabs foreign objects; when the mechanical claw is closed, the magnetic materials attract each other, and the originally disconnected flexible rope becomes a whole, so that the foreign object in the middle of the mechanical claw is wrapped by the flexible rope and is difficult to leak out. Since the magnetic material in the middle of the flexible rope will separate when the mechanical claw is opened, the mechanical claw can have a larger opening range, and since the flexible rope can be separated, the kitchen waste hanging on the flexible rope during the grabbing process is also easier to fall off.

[0015] 3. In the technical solution of the present invention, the thread at the end of the mechanical claw can roll up the plastic film-like foreign objects in the kitchen waste when the device rotates forward, and then when the device moves to above the foreign object collection device, the device is rotated in the reverse direction to fall off the film-like foreign objects, thereby achieving the separation of the foreign objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the device of the present invention.

[0017] Figure 2 is a schematic diagram of a switching module of the device of the present invention, Figure 2 (a) is a cross-sectional view of the module. Figure 2 (b) is the front view of the module.

[0018] Figure 3 It is a schematic diagram of the boss of the device of the present invention.

[0019] Figure 4 It is a schematic diagram of the folding arm of the device of the present invention. DETAILED DESCRIPTION

[0020] See also Figure 1 Figure 2According to an embodiment of a device and method for picking out foreign matter from kitchen waste provided by the present invention, the device and method include a multi-position transmission mechanism, a flexible net mechanism, and a folding arm mechanical claw mechanism; the multi-position transmission mechanism includes a motor, a transmission shaft I 03, a transmission shaft II 04, a slider 05, a planetary gear train 02, and a boss 07; the flexible net mechanism includes multiple flexible ropes 08 and multiple magnetic materials 09; the folding arm mechanical claw mechanism includes multiple folding arms 06 and a mechanical claw bracket 004.

[0021] Combine the following Figure 2 Figure 3 Figure 4 , the specific structure of the device and method of the present invention is further described.

[0022] The planetary gear system includes a sun gear 002, multiple planetary gears, a planetary carrier, and a gear ring. The sun gear 002 is located in the middle of the planetary gear system 02, with planetary gears on the outside and gear rings on the outside of the planetary gears. The sun gear 002 is hollow in the middle and meshes with the planetary gears on the outside. The sun gear 002 is provided with multiple sun gear internal spline grooves 001 on the inside. The planetary gears are fixed on the planetary carrier, and the gear rings are fixed on the motor 01 through four steel shafts. The sun gear 002, the planetary gears, the gear rings are coaxial with the transmission shaft. The transmission shaft I03 is a hollow shaft with internal spline grooves on the inside and external splines on the outside. The transmission shaft I is connected to the power output shaft of the motor through the internal spline groove and is coaxial with the power output shaft of the motor; the external spline diameter of the transmission shaft I is smaller than the diameter of the hollow hole of the sun gear, and the transmission shaft I03 is coaxial with the sun gear 002 and passes through the sun gear 002; the transmission shaft II04 has splines on the outside of the upper half and threads on the lower half, and is coaxial with the transmission shaft I03 and maintains a meshing clutch distance with the bottom of the transmission shaft I03.

[0023] The boss 07 includes a boss internal threaded hole 011, a slide rail 012, and a groove 013. The boss 07 is an isosceles trapezoidal body of revolution, whose upper and lower bottom surfaces are perpendicular to the transmission shaft II 04. There is a threaded hole 011 in the middle of the boss 07 that passes through the upper and lower bottom surfaces vertically and is concentric with the upper and lower bottom surfaces and coaxial with the transmission shaft II 04. The diameter of the boss threaded hole 011 is based on the thread of the transmission shaft II 04 and the threaded hole of the boss 07 can achieve threaded connection. The transmission shaft II 04 passes through the middle of the boss threaded hole 011. The side of the boss 07 forms a certain angle with the upper and lower bottom surfaces. The side is also provided with a slide rail 012. The angle between the slide rail 012 and the transmission shaft II 04 is equal to the angle between the side of the boss and the transmission shaft. A groove 013 is provided in the middle of the slide rail 012. The mechanical claw bracket 004 is cylindrical in shape, and has three evenly distributed grooves on its outer circumference. Each groove has an axis, which is perpendicular to the transmission shaft and connected to the left and right ends of the groove. The mechanical claw bracket 004 is coaxial with the transmission shaft II04; a hole is provided in the middle of the mechanical claw bracket 004, and the hole is coaxial with the transmission shaft II04. The inner side of the hole is provided with a mechanical claw bracket inner spline groove 003, and the hole diameter is larger than the outer spline diameter of the transmission shaft II04, and the transmission shaft II04 passes through the hole; the mechanical claw bracket 004 is connected to the planetary frame on the top; the folding arm 06 includes a connecting hole 020, an arm section I 021, an arm section II 022, an arm section III 023, an arm section IV 024, a sliding pin 025, and a connecting hole 003 is provided at the top of the arm section I 021 20 makes the axis on the mechanical claw bracket just pass through the connecting hole 020, the arm section Ⅰ 021 and the arm section Ⅱ 022 are inwardly bent, and the inward bending angle between them is a fixed value of a certain angle, and there is a sliding pin 025 perpendicular to the folding arm at the connection between the arm section Ⅰ 021 and the arm section Ⅱ 022, and the diameter of the sliding pin 025 is equal to the width of the slide rail groove 013 and passes through the groove 013, the arm section Ⅱ 022 and the folding arm Ⅲ 023 are outwardly bent, and the outward bending angle between them is a fixed value of a certain angle, the arm section Ⅲ 023 and the arm section Ⅳ 024 are inwardly bent, and the inward bending angle between them is a fixed value of a certain angle, and the outer side surface of the arm section Ⅳ 024 has a threaded groove with a specific rotation direction, and when the folding arm mechanical claw is closed, the ends of the three folding arms can be closed.

[0024] The flexible net mechanism is composed of multiple flexible ropes 08 and magnetic materials 09 of different lengths. The material of the flexible rope 08 is a material with good flexibility. One end of the flexible rope is connected to the arm section III 023 of the folding arm and the other end is connected to the magnetic material 09, and multiple flexible ropes 08 are equidistantly distributed; the length of the flexible rope 08 becomes shorter and shorter from top to bottom. When the folding arm mechanical claw is closed, the magnetic materials 09 on the flexible rope 08 can just attract each other and be connected as a whole. The length ratio of each flexible rope 08 is equal to the distance ratio between the connection between the flexible rope 08 and the arm section III 023 and the extension line of the axis of the transmission shaft when the mechanical claw is closed.

[0025] The slider 05 is a hollow cylinder, coaxial with the transmission shaft Ⅰ03 and the transmission shaft Ⅱ04. The slider 05 is provided with an internal spline groove inside and an external spline outside. The internal spline groove inside meshes with the external splines of the transmission shaft Ⅰ03 and the transmission shaft Ⅱ04 so that it can move up and down along the transmission shaft, and the external spline outside enables it to mesh with the internal spline groove 001 of the sun gear and the internal spline groove 003 of the mechanical claw bracket. The meshing and clutching distance simultaneously guarantees the following three conditions: the slider 05 can simultaneously ensure meshing with the internal key groove 001 of the sun gear and the transmission shaft Ⅱ04, the slider 05 can simultaneously ensure meshing with the transmission shaft Ⅰ03 and the internal key groove 003 of the mechanical claw bracket, and the slider does not mesh with the internal spline groove 003 of the mechanical claw bracket and the internal spline groove 001 of the sun gear when ensuring simultaneous meshing with the transmission shaft Ⅰ03 and the transmission shaft Ⅱ04.

[0026] A method for picking out foreign matter from kitchen waste, comprising the following working methods: 1) When the device is used to pick up hard foreign objects, the slider 05 is pushed to the middle position so that it does not contact the spline groove 001 in the sun gear and the spline groove 003 in the mechanical claw, but only meshes with the rotating shaft Ⅰ03 and the transmission shaft Ⅱ04. When picking up foreign objects, the folding arm 06 is closed, and the flexible rope 08 in the middle of the folding arm 04 is connected as a whole. The foreign objects in the middle of the folding arm 06 are not easy to fall out under the obstruction of the flexible rope 08. When the foreign objects need to be released, the folding arm 06 is opened, and the connected flexible ropes 08 are separated, and the foreign objects in the middle can fall out, so that the folding arm mechanical claw can grasp and release hard foreign objects by opening and closing without rotating; 2) When the function of the device is to pick up foreign objects that are easy to be entangled, the slider 05 is slid into the spline groove 003 in the mechanical claw bracket, and the transmission shaft Ⅱ04 and the mechanical claw bracket 004 obtain the same rotation speed as the transmission shaft Ⅰ03. When it is necessary to entangle foreign objects, the folding arm mechanical claw rotates in a specific direction under the premise that the claw tip is closed, and the mechanical claw thread at the end will roll up the plastic products in the kitchen waste and wrap them around the folding arm 06. When the foreign objects need to fall off, the folding arm 06 is rotated in the opposite direction, and the foreign objects will fall off, so that the outer side of the arm section Ⅳ024 has a threaded groove with a specific rotation direction to entangle or release the foreign objects; 3) When the function of the device is to pick up easily dispersed foreign matter, the slider 05 is pushed to the spline groove 001 in the sun gear, and the slider 05 is kept engaged with the transmission shaft Ⅰ03 and the transmission shaft Ⅱ04. The flexible rope 08 in the middle of the folding arm 06 is connected as a whole. During the rotation process, the folding arm 06 can gather the easily dispersed foreign matter. The foreign matter in the middle of the folding arm 06 is not easy to fall out due to the obstruction of the flexible rope 08, so that the folding arm mechanical claw rotates in a specific direction and opens and closes, thereby realizing the picking up of easily dispersed garbage.

[0027] When the device is running, the motor 01 drives the transmission shaft Ⅰ03 to rotate.

[0028] See also Figure 1 and Figure 2 If the folding arm 06 switch needs to be changed to close, push the slider 05 to the middle position so that it does not contact the spline groove 001 in the sun gear and the spline groove 003 in the mechanical claw; it only meshes with the rotating shaft Ⅰ03 and the transmission shaft Ⅱ04; at this time, the transmission shaft Ⅰ03 drives the rotating shaft Ⅱ04 to rotate. At this time, since the planetary gear train 02 is not connected to the transmission shaft Ⅰ03, and the mechanical claw bracket 004 is not connected to the transmission shaft Ⅱ, the folding arm 06 cannot rotate, and the boss 07 connected to the mechanical claw cannot rotate. There will be relative movement between the boss 07 and the transmission shaft Ⅱ04, and the boss 07 will move up and down along the thread on the transmission shaft Ⅱ04. The slide rail 012 on the boss 07 will move up and down with the boss 07, and the sliding pin 025 will move along the groove 013, thereby opening or closing the folding arm 06.

[0029] The purpose of this process is: when there are hard foreign objects such as bones in the kitchen waste, the device can be lowered into the kitchen waste and the folding arm 06 can be closed. During the process, the magnetic materials 09 at one end of the flexible rope 08 are attracted to each other and connected together, and the flexible rope 08 in the middle of the folding arm 06 is connected as a whole, and then the device rises. The foreign objects in the middle of the folding arm 06 are not easy to fall out due to the obstruction of the flexible rope 08; when the device moves to the top of the foreign object recovery device, the motor 01 provides reverse power, the folding arm 06 opens, the magnets 09 at the end of the flexible rope 08 separate, and the connected flexible ropes 08 separate, so that the foreign objects in the middle can fall out.

[0030] See also Figure 1 and Figure 2 If the folding arm 06 needs to rotate, use the slider 05 to slide into the spline groove 003 in the mechanical claw bracket. At this time, the transmission shaft Ⅰ03, the transmission shaft Ⅱ04 and the mechanical claw bracket 004 are a whole. The transmission shaft Ⅱ04 and the mechanical claw bracket 004 obtain the same rotation speed as the transmission seat Ⅰ03. The mechanical claw bracket 004 drives the folding arm 06 to rotate at the same speed. Therefore, the rotation speed of the folding arm 06 and the transmission shaft 04 is the same, and the boss 07 located between them will also maintain the same rotation speed. Therefore, the boss 07 and the transmission shaft Ⅱ04 do not have relative motion, and the boss 07 will not move up and down along the thread. The device simply rotates.

[0031] The purpose of this process is: when there are plastic products such as plastic bags and plastic films in the kitchen waste, the folding arm 06 can be rotated and lowered in a closed state. During the rotation, the mechanical claw thread at the end will roll up the plastic products in the kitchen waste and wrap them around the folding arm 06. At this time, the device can be moved above the equipment responsible for collecting foreign matter and the folding arm 06 can be rotated in the opposite direction to remove the foreign matter wrapped thereon, thereby achieving the separation of foreign matter from the kitchen waste.

[0032] See also Figure 1 and Figure 2If the switch of the folding arm 06 needs to be closed and rotated at the same time, push the slider 05 to the spline groove 001 in the sun gear, and keep the slider 05 meshed with the transmission shaft Ⅰ03 and the transmission shaft Ⅱ04. At this time, the transmission shaft Ⅰ03 drives the sun gear 002 and the transmission shaft Ⅱ04 to rotate, and the sun gear 002 drives the planetary gear to rotate. However, due to the regulation of the speed by the planetary gear system 02, the speed of the planetary gear will be lower than that of the sun gear 002, and the planetary gear continues to drive the planetary frame, the mechanical claw bracket 004, and the folding arm 06 in a corresponding manner. The boss 07 rotates at the same speed. At this time, the speed of the folding arm 06 is equal to the planetary gear but lower than the sun gear 002 and the transmission shaft Ⅱ04. Since the boss 07 is connected to the folding arm 06, its speed will be slightly slower than the transmission shaft Ⅱ04 and equal to the folding arm 06. At this time, the boss 07 and the transmission shaft Ⅱ04 move relative to each other, the boss 07 rises or falls along the thread, the slide rail 012 on the boss 07 will move up and down with the boss 07, and the sliding pin 025 will move along the groove 013 of the slide rail, thereby driving the folding arm 06 to open or close.

[0033] The purpose of this process is: when there are easily dispersed foreign objects in the kitchen waste, the folding arm 06 can be closed during the rotation process, and the magnetic materials 09 at one end of the flexible rope 08 are attracted to each other and connected together, and the flexible rope 08 in the middle of the folding arm 06 is connected as a whole. During the rotation process, the folding arm 06 can gather the easily dispersed foreign objects, and then the device rises. The foreign objects in the middle of the mechanical claw are not easy to fall out due to the obstruction of the flexible rope 08. When the device moves to the top of the foreign object recovery device, the motor 01 provides reverse power, the folding arm 06 opens, the magnetic material 09 at one end of the flexible rope 08 separates, and the flexible ropes 08 connected together separate, and the foreign objects in the middle can fall out.

Claims

1. A device for picking out foreign matter from kitchen waste, characterized in that: include: Multi-position transmission mechanism, flexible net mechanism, folding arm mechanical claw mechanism; the multi-position transmission mechanism is located in the middle of the device, and is connected with the folding arm mechanical claw mechanism, and the folding arm mechanical claw mechanism is connected with the flexible net mechanism.

2. A device for picking out foreign matter from kitchen waste according to claim 1, characterized in that: The multi-position transmission mechanism comprises: a transmission shaft I, a transmission shaft II, a sliding block, a planetary gear train, and a boss.

3. A device for picking out foreign matter from kitchen waste according to claim 2, characterized in that: The planetary gear system includes a sun gear, multiple planetary gears, a planetary carrier, and a ring gear. The sun gear, planetary gears, and ring gear are coaxial with the transmission shaft. The sun gear is located in the middle of the planetary gear system, with planetary gears on the outside, and the ring gear on the outside of the planetary gears. The sun gear is hollow in the middle and meshes with the planetary gears on the outside. Multiple sun gear internal spline grooves are provided on the inside. The planetary gears are fixed on the planetary carrier, and the ring gear is fixed on the motor through four steel shafts; the transmission shaft I is a hollow shaft with internal spline grooves and external splines. The transmission shaft I is connected to the power output shaft of the motor through the internal spline groove and passes through the sun gear; the upper half of the transmission shaft II has splines on the outside and threads on the lower half, and is coaxial with the transmission shaft I and maintains a meshing and clutching distance with the bottom of the transmission shaft I.

4. The device for picking out foreign matter from kitchen waste according to claim 2, characterized in that: The boss includes an internal threaded hole of the boss, a slide rail, and a groove. The boss is an isosceles trapezoidal body of revolution. There is a threaded hole in the middle of the boss that vertically passes through the upper bottom surface and the lower bottom surface and is coaxial with the transmission shaft II. The diameter of the boss threaded hole is based on the thread of the transmission shaft II and the threaded hole of the boss to achieve a threaded connection. The side surface of the boss forms a certain angle with the upper and lower bottom surfaces and is provided with a slide rail. The angle between the slide rail and the transmission shaft II is equal to the angle between the side surface of the boss and the transmission shaft. A groove is provided in the middle of the slide rail.

5. The device for picking out foreign matter from kitchen waste according to claim 1, characterized in that: The folding arm mechanical claw mechanism comprises a plurality of folding arms and a mechanical claw bracket.

6. The device for picking out foreign matter from kitchen waste according to claim 5, characterized in that: The mechanical claw bracket is in the shape of a circular ring and is coaxial with the transmission shaft II. Its outer circumference has three evenly distributed grooves, and each groove has a shaft connected to the folding arm; a spline groove is provided inside the mechanical claw bracket on the inner side of the center hole, and the hole diameter ensures that the transmission shaft II can pass through the hole, and the mechanical claw bracket is connected to the planetary frame on top; the folding arm includes a connecting hole, arm section I, arm section II, arm section III, arm section IV, and a sliding pin. There is a connecting hole at the top of arm section I so that the shaft on the mechanical claw bracket just passes through the connecting hole. There is an inner bend between arm section I and arm section II, and there is a sliding pin perpendicular to the folding arm at the connection. The diameter of the sliding pin is equal to the width of the slide rail groove and passes through the groove. There is an outer bend between arm section II and folding arm III, and an inner bend between arm section III and arm section IV. There is a threaded groove with a specific rotation direction on the outer side of arm section IV. When the folding arm mechanical claw is closed, the ends of the three folding arms can be closed.

7. The device for picking out foreign matter from kitchen waste according to claim 2, characterized in that: The slider is hollow cylindrical and is provided with an inner spline groove and an outer spline. The inner spline groove meshes with the outer splines of the transmission shaft I and the transmission shaft II, and the outer spline meshes with the inner spline groove of the sun gear and the inner spline groove of the mechanical claw bracket.

8. The device for picking out foreign matter from kitchen waste according to claim 1, characterized in that: The flexible net mechanism is composed of multiple flexible ropes of different lengths and magnetic materials. One end of the flexible rope is connected to the arm section III of the folding arm, and the other end is connected to the magnetic material and multiple flexible ropes are equidistantly distributed. The length of the flexible rope is such that when the folding arm mechanical claw is closed, the magnetic materials on the flexible rope can just attract each other and be connected as a whole.

9. The device for picking out foreign matter from kitchen waste according to claim 3, characterized in that: The engagement and clutch distance simultaneously ensures the following three conditions: the slider can simultaneously ensure engagement with the keyway drawn inside the sun gear and the transmission shaft II, the slider can simultaneously ensure engagement with the transmission shaft I and the keyway drawn inside the mechanical claw bracket, and the slider does not engage with the keyway drawn inside the mechanical claw bracket and the spline groove inside the sun gear while ensuring simultaneous engagement with the transmission shaft I and the transmission shaft II.

10. A method for picking out foreign matter from kitchen waste, characterized in that: Contains the following working methods: 1) When the device is used to pick up hard foreign objects, the slider is pushed to the middle position so that it does not contact the spline groove in the sun gear and the spline groove in the mechanical claw and only meshes with the rotating shaft I and the transmission shaft II. When picking up foreign objects, the folding arm is closed, and the flexible rope in the middle of the folding arm is connected as a whole. The foreign objects in the middle of the folding arm are not easy to fall out under the obstruction of the flexible rope. When the foreign objects need to be released, the folding arm is opened, and the connected flexible ropes are separated, and the foreign objects in the middle can fall out, so that the folding arm mechanical claw can grasp and release hard foreign objects by opening and closing without rotating; 2) When the function of the device is to pick up foreign objects that are easy to be entangled, the slider is slid into the spline groove in the mechanical claw bracket, and the transmission shaft II and the mechanical claw bracket obtain the same rotation speed as the transmission shaft I. When the foreign object needs to be entangled, the folding arm mechanical claw rotates in a specific direction under the premise that the claw tip is closed, and the mechanical claw thread at the end will roll up the plastic products in the kitchen waste and wrap them around the folding arm. When the foreign object needs to fall off, the folding arm rotates in the opposite direction and the foreign object will fall off, so that the outer side of the arm section IV has a threaded groove with a specific rotation direction to entangle or release the foreign object; 3) When the function of the device is to pick up easily dispersed foreign matter, the slider is pushed to the spline groove in the sun gear, and the slider is kept engaged with the transmission shaft I and the transmission shaft II. The flexible rope in the middle of the folding arm is connected as a whole. During the rotation process, the folding arm can gather easily dispersed foreign matter. The foreign matter in the middle of the folding arm is not easy to fall out due to the obstruction of the flexible rope, so that the folding arm mechanical claw rotates in a specific direction and opens and closes, thereby realizing the picking of easily dispersed garbage.

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