A rubber decomposition device and method for recycling nitrile rubber waste to make gloves

Abstract

This invention relates to the field of waste rubber recycling technology, specifically to a rubber decomposition device and method for recycling nitrile rubber waste to make gloves. The device includes: a crushing chamber with multiple sets of extending rings arranged along its length; a crushing structure disposed within the crushing chamber, the central part of which is hollow; a circulation assembly installed within the crushing chamber and connected to the crushing structure, the circulation assembly capable of pumping crushed rubber particles larger than a predetermined particle size back to the upper part of the crushing chamber, and the circulation assembly having filter holes; and a reverse jet assembly disposed within the crushing chamber, the reverse nozzle assembly capable of stepping and acting on the filter holes to push out rubber particles clogging the filter holes, achieving thorough crushing and ensuring the uniformity of the crushed rubber particles.

Description

Technical Field

[0001] This invention relates to the field of waste rubber recycling technology, specifically to a rubber decomposition device and method for recycling nitrile rubber waste to make gloves. Background Technology

[0002] Nitrile rubber waste has a wide range of sources, including used gloves and seals, making its recycling significant. It not only achieves resource recycling and reduces environmental pollution but also creates secondary economic value. The recycling process requires the use of crushers, with vertical shaft impact crushers being a common and widely used method for recycling nitrile rubber waste.

[0003] A vertical shaft impact crusher mainly consists of a body, main shaft, cutters, and bearings. Rubber waste is dumped into the machine and falls under gravity, interacting with the high-speed rotating cutters to shear and crush the rubber. During the crushing process, the different positions of the cutters and rubber interact alter the rubber's trajectory, resulting in either an upward or downward tilt. When the rubber moves upward, it falls under gravity and interacts with the cutters again, achieving secondary shearing and improving the crushing effect. However, when the rubber moves downward, its falling speed accelerates, preventing it from being fully sheared and crushed. Even with a circulation device, this situation is difficult to avoid, resulting in a longer overall crushing time and impacting recycling efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a rubber decomposition device and method for recycling nitrile rubber waste to make gloves, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A rubber decomposition device for recycling nitrile rubber waste to make gloves includes:

[0007] A crushing chamber, wherein multiple sets of extending rings are installed inside the crushing chamber along its length;

[0008] A crushing structure is provided inside the crushing chamber, and the middle part of the crushing structure is hollow.

[0009] A circulation component is installed inside the crushing chamber and connected to the crushing structure. The circulation component can pump rubber particles larger than a predetermined particle size back to the upper part of the crushing chamber after crushing, and the circulation component is provided with filter holes.

[0010] A reverse jet assembly is disposed within the crushing chamber. The reverse nozzle assembly is capable of stepping and acting on the filter holes to push out the rubber particles clogging the filter holes.

[0011] As a further aspect of the present invention: the crushing structure includes a central shaft rotatably mounted inside the crushing chamber, the interior of the central shaft is a hollow structure, and multiple sets of shearing blades are equidistantly arranged on the central shaft in a circular pattern, the shearing blades extending to the lower part of the extension ring.

[0012] As a further embodiment of the present invention: the circulation component includes a conical filter element installed in the crushing chamber, and the filter holes are provided in multiple sets and are evenly distributed circumferentially on the conical filter element;

[0013] The circulation assembly also includes a pumping pipe connected to the conical filter and extending to the outside of the crushing chamber, the upper end of the pumping pipe being rotatably and sealingly connected to the lower end of the central shaft;

[0014] The air pump pipe is located at the top of the conical filter element and has a reflux hole.

[0015] As a further embodiment of the present invention: the upper part of the crushing box is also provided with a guide, the upper side of the guide is provided with a first conical part, and the lower side is provided with a second conical part;

[0016] The side of the cross-section of the second conical piece is an arc that is concave inward.

[0017] As a further embodiment of the present invention: the length direction of the filter hole is toward the side wall of the crushing chamber, and the material sprayed through the filter hole can act on the lower part of the extension ring.

[0018] As a further embodiment of the present invention: the reverse jetting assembly includes:

[0019] A stepper drive assembly is mounted on the crushing chamber and connected to the air pump pipe;

[0020] A pump pressure assembly is connected to the drive assembly, and the pump pressure assembly is provided with multiple sets of nozzles adapted to the filter orifice;

[0021] A fixing ring is installed inside the crushing chamber. The fixing ring is provided with multiple sets of guide grooves connected end to end. A convex shaft that is rotatably connected to the pump pressure assembly can roll within the guide grooves.

[0022] As a further embodiment of the present invention: the stepper drive assembly includes a second motor mounted on the crushing chamber and a rotating sleeve rotatably mounted on the air pump pipe, the rotating sleeve being connected to the output shaft of the second motor via a belt;

[0023] The stepping assembly also includes a connecting plate connected to the rotating sleeve, the connecting plate being connected to the pump assembly, and the nozzles being equidistantly arranged on the connecting plate.

[0024] As a further embodiment of the present invention: the pump pressure assembly includes a hysteresis sleeve connected to the connecting plate, a sealing plug is slidably installed inside the hysteresis sleeve, a telescopic plate is connected to the sealing plug and passes through the hysteresis sleeve, and the telescopic plate is rotatably connected to the cam shaft.

[0025] A cylindrical spring is fitted onto the telescopic plate, with one end of the cylindrical spring connected to the sealing plug and the other end connected to the side wall of the hysteresis sleeve.

[0026] The hysteresis sleeve is also equipped with two sets of one-way valves with opposite conduction directions, one of which is connected to the nozzle through a conduit.

[0027] As a further embodiment of the present invention: the guide groove includes an inclined groove and a straight groove disposed on the fixing ring, wherein the extension line of the straight groove passes through the center of the conical filter element.

[0028] A decomposition method, using the aforementioned nitrile rubber waste recycling and glove manufacturing rubber decomposition device, includes the following steps:

[0029] Step 1: Control the crushing structure to move and pour the block rubber to be crushed onto the guide, which can guide the block rubber into the crushing chamber;

[0030] Step 2: After the block rubber comes into contact with the crushing structure, it is sheared. At the same time, the block rubber moves in the crushing chamber. When the block rubber collides with the extension ring, the extension ring can bounce the block rubber upward.

[0031] Step 3: The crushed rubber will fall into the circulation component, where it will be filtered and the rubber particles larger than the predetermined particle size will move towards the top of the crushing chamber for cyclic crushing.

[0032] Step 4: When the stepper drive component is activated, it enables the pump component to perform a circular motion. During this process, the pump component cooperates with the guide groove to spray high pressure into the filter holes, pushing out the rubber particles that are blocking the filter holes.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] The shear blade can crush block rubber from all directions and multiple angles. Based on the specific position, angle and kinetic energy transfer characteristics of the instantaneous interaction between the block rubber and the shear blade, the movement trajectory and residence time of the block rubber in the crushing chamber are cleverly controlled. This makes the block rubber have to undergo repeated crushing and grinding. Each collision and cut moves towards a finer and more uniform particle shape. The final output rubber particles are superior to traditional crushing processes in key quality indicators such as particle size distribution and morphological regularity.

[0035] Under the action of the circulation component, after the crushing is completed, rubber particles larger than the predetermined particle size can be pumped back to the top of the crushing chamber, and then fall again under the action of gravity, and when they interact with the shear blade, they will be crushed again.

[0036] By using the pump pressure assembly and fixing ring, high-pressure blowing can be performed when the nozzle coincides with the filter hole to eliminate rubber particles clogging the filter hole, thereby improving the filtration effect of the filter hole. Moreover, this blowing effect is achieved mechanically, which makes the movement of the nozzle and the blowing action more coordinated, reducing the action delay and action error between the two. Attached Figure Description

[0037] Figure 1 A schematic diagram of one embodiment of a rubber decomposition device for recycling nitrile rubber waste to make gloves.

[0038] Figure 2 This is a schematic diagram of the structure of a rubber decomposition device for recycling nitrile rubber waste to make gloves, taken from another angle in one embodiment.

[0039] Figure 3 A partial cross-sectional perspective view of one embodiment of a rubber decomposition device for recycling nitrile rubber waste to make gloves.

[0040] Figure 4 A half-sectional view of one embodiment of a rubber decomposition device for recycling nitrile rubber waste to make gloves.

[0041] Figure 5 A schematic diagram illustrating the movement direction of the rubber after its interaction with the shearing blade in one embodiment of a rubber decomposition device for recycling nitrile rubber waste into gloves.

[0042] Figure 6 A schematic diagram of the structure of the recycling component in one embodiment of a rubber decomposition device for recycling nitrile rubber waste to make gloves.

[0043] Figure 7 A schematic diagram of the structure of the conical filter element and filter holes in one embodiment of a rubber decomposition device for recycling nitrile rubber waste to make gloves.

[0044] Figure 8A schematic diagram of the structure of the stepper drive assembly, pump assembly, and fixing ring in one embodiment of a rubber decomposition device for recycling nitrile rubber waste to make gloves.

[0045] Figure 9 A schematic diagram of the pump assembly in one embodiment of a rubber decomposition device for recycling nitrile rubber waste to make gloves.

[0046] Figure 10 A schematic diagram of the guide groove structure in one embodiment of a rubber decomposition device for recycling nitrile rubber waste to make gloves.

[0047] In the diagram: 1. Crushing chamber; 101. Extension ring; 2. First motor; 3. Connecting belt; 4. Central shaft; 5. Shearing blade; 6. Pump pipe; 601. Return hole; 7. Conical filter element; 701. Filter hole; 8. Guide element; 801. First conical element; 802. Second conical element; 9. Second motor; 10. Rotating sleeve; 11. Connecting plate; 1101. Nozzle; 12. Hysteresis sleeve; 13. Sealing plug; 14. Telescopic plate; 15. Cylindrical spring; 16. Guide tube; 17. Convex shaft; 18. Fixing ring; 1801. Inclined groove; 1802. Straight groove. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0050] Please see Figures 1-10 In this embodiment of the invention, a rubber decomposition device for recycling nitrile rubber waste to make gloves includes: a crushing box 1, a crushing structure, a circulation component, and a reverse blowing component.

[0051] Multiple sets of extension rings 101 arranged along their length direction are installed inside the crushing chamber 1;

[0052] The crushing structure is disposed inside the crushing chamber 1. The middle part of the crushing structure is hollow. The crushing structure includes a central shaft 4 rotatably installed inside the crushing chamber 1. The interior of the central shaft 4 is hollow, and multiple sets of shearing blades 5 are equidistantly arranged on the central shaft 4. The shearing blades 5 extend to the lower part of the extension ring 101. A first motor 2 is installed on the crushing chamber 1, and the output shaft of the first motor 2 is connected to the central shaft 4 through a connecting belt 3.

[0053] In this embodiment, during the crushing operation, the first motor 2 operates and is driven by the connecting belt 3 to drive the central shaft 4 and the shearing blade 5 on it to enter a high-speed rotation state. When the block rubber is put into the crushing box 1, it interacts with the shearing blade 5 under high-speed rotation load. With the help of the sharp edge of the shearing blade 5, the large pieces of rubber are gradually cut and torn until they are granulated, laying a good material foundation for subsequent operations such as fine grinding and chemical treatment of rubber, and significantly improving the smoothness and continuity of the entire rubber processing process.

[0054] A deeper investigation into the instantaneous interaction between the block rubber and the shear blade 5 (see reference) Figure 5 It can be observed that the block rubber exhibits three distinct motion patterns:

[0055] Firstly, when the center of gravity of the block rubber is located exactly in the upper region of the shear blade 5, the shear blade 5 not only cuts into the rubber at the moment of applying the crushing force, but also gives it upward kinetic energy. This ingenious tilt angle design allows the block rubber to fly towards the extension ring 101 or the inner wall of the crushing box 1 after leaving the initial action of the shear blade 5, resulting in a powerful collision. The reaction force generated by the collision, combined with the weight of the block rubber itself, causes it to fall back into the crushing operation area, allowing it to have secondary or even multiple close contacts and interactions with the high-speed rotating load shear blade 5. This significantly increases the frequency of the block rubber undergoing the crushing process from the source, creating the prerequisite for thorough crushing.

[0056] Secondly, when the center of gravity of the block rubber is located at the lower part of the blade of the shear blade 5, the shear blade 5 gives the block rubber an instantaneous tendency to tilt downwards during the crushing process. This guiding design allows the block rubber to accurately impact the surface of the carefully configured extension ring 101 at the lower part of the shear blade 5. At the moment of impact, according to the principles of physics and mechanics, the reverse force bursts out, strongly lifting the block rubber so that it tilts upwards and bounces back into the core working area of ​​the crushing chamber 1, and re-enters the crushing range of the shear blade 5. This cleverly extends the time that the block rubber participates in the crushing process, further exploring and enhancing the potential and efficiency of the interaction between the shear blade 5 and the block rubber.

[0057] Thirdly, if the center of gravity of the block rubber is precisely on the same plane as the blade of the shearing blade 5, the shearing blade 5, with its sharp and symmetrical blade layout, can evenly divide the block rubber into two along this plane. This precise two-part splitting crushing mode effectively avoids the subsequent processing problems caused by the different sizes and shapes of rubber particles, ensuring that the output rubber particles are highly consistent in size and specifications, greatly optimizing the uniformity index of rubber crushing. For the production process that pursues high-quality rubber products, this feature is undoubtedly of key value. At the same time, when the block rubber is split into two, the two parts after crushing can move upward or downward along the inclined direction, so that the block rubber can also interact with the shearing blade 5 multiple times.

[0058] Based on the above structural layout and working principle, when processing block rubber, the shear blade 5 can launch a crushing attack on the block rubber from all directions and multiple angles. According to the specific position, angle and kinetic energy transfer characteristics of the instantaneous interaction between the block rubber and the shear blade 5, the movement trajectory and residence time of the block rubber in the crushing chamber 1 are cleverly controlled. This forces the block rubber to undergo repeated crushing and grinding. Each collision and cut moves towards a finer and more uniform particle shape. The final output rubber particles are superior to traditional crushing processes in key quality indicators such as particle size distribution and morphological regularity, which strongly promotes the vigorous development of the rubber processing industry towards high efficiency and precision.

[0059] Furthermore, in practical use, nitrile rubber waste needs to undergo a coarse crushing process to break it into blocks. Subsequent crushing treatment can further reduce the particle size of the nitrile rubber waste, making it easier to store and reuse.

[0060] Please see Figures 3-6 The circulation component is installed inside the crushing chamber 1 and connected to the crushing structure. The circulation component can pump rubber particles larger than the predetermined particle size back to the upper part of the crushing chamber 1 after crushing. The circulation component is provided with filter holes 701.

[0061] The circulation assembly includes a conical filter element 7 installed inside the crushing chamber 1, and the filter holes 701 are provided in multiple sets and are evenly distributed circumferentially on the conical filter element 7;

[0062] The circulation assembly also includes a pumping pipe 6 connected to the conical filter element 7 and extending to the outside of the crushing chamber 1, wherein the upper end of the pumping pipe 6 is rotatably and sealed to the lower end of the central shaft 4.

[0063] The air pump pipe 6 is located on the upper part of the conical filter element 7 and is provided with a return hole 601.

[0064] After crushing, the rubber particles fall onto the conical filter element 7. At this time, rubber particles that meet the predetermined particle size can pass through the filter hole 701, while rubber particles larger than the predetermined particle size cannot pass through the filter hole 701. During this process, these rubber particles can move towards the center along the inner side of the conical filter element 7 under the action of gravity, and enter the pump pipe 6 through the return hole 601 and then be blown to the top of the crushing chamber 1 through the central shaft 4.

[0065] Specifically, the end of the air pump pipe 6 is connected to an air pumping device (not shown in the figure). The air pumping device can deliver compressed gas into the air pump pipe 6. The compressed gas can enter the interior of the central shaft 4 through the air pump pipe 6. This arrangement allows rubber particles larger than a predetermined particle size to be pushed into the central shaft 4 by the compressed gas when they enter the air pump pipe 6. This allows the rubber particles to be transported back to the upper part of the crushing chamber 1, thereby achieving cyclic crushing and ensuring the crushing effect.

[0066] Furthermore, when the compressed gas moves within the pump pipe 6, the air velocity inside the return hole 601 is much greater than the air velocity outside it, which generates a certain negative pressure outside the return hole 601. Under the action of this negative pressure, rubber particles larger than the predetermined particle size at the return hole 601 can be drawn into the pump pipe 6, thus avoiding the accumulation of rubber particles at the return hole 601 to a certain extent.

[0067] Based on the above settings, after crushing, rubber particles larger than the predetermined particle size can be pumped back to the top of the crushing chamber 1, and then fall again under the action of gravity, and when they interact with the shear blade 5, they will be crushed again.

[0068] The upper part of the crushing box 1 is also provided with a guide 8, and the upper side of the guide 8 is provided with a first conical part 801 and the lower side is provided with a second conical part 802.

[0069] The side of the cross-section of the second conical member 802 is an arc that is concave inward.

[0070] Under the action of the first conical member 801, when the block rubber is poured into the crushing box 1, it can be evenly dispersed into the crushing box 1, thereby avoiding the block rubber from accumulating in a certain space and causing the shearing blade 5 to not work well on the block rubber.

[0071] Furthermore, since the block rubber is evenly dispersed when it enters the crushing chamber 1, it interacts with the end of the shear blade 5 away from the central axis 4. As a result, when the block rubber interacts with the shear blade 5 upward and tends to tilt, it can have a smaller distance difference with the extension ring 101. This allows the block rubber, which tends to tilt, to have a greater impact with the extension ring 101. In turn, the bouncing action allows the block rubber to interact with the shear blade 5 in multiple directions, improving the shearing effect.

[0072] Without the first conical component 801, the block rubber interacts with the end of the shear blade 5 near the central axis 4. In this case, when the block rubber tends to tilt, it cannot be guaranteed that it can generate an interaction force with the extension ring 101, and it tends to bounce upward. Secondly, even if the block rubber collides with the extension ring 101, the degree of collision is small and cannot effectively enable the block rubber to interact with the corresponding shear blade 5 a second time.

[0073] When rubber particles larger than the predetermined particle size are ejected from the upper part of the central shaft 4, their motion trajectory can be changed under the action of the second cone 802. Specifically, the rubber particles are switched from a vertical motion trajectory to a slightly inclined upward motion trajectory. At this time, due to the decrease in the speed of the compressed gas, the kinetic energy of the rubber particles needs to overcome their own gravity, so that the rubber particles can perform parabolic motion and fall back into the crushing chamber 1. Compared with the absence of the second cone 802, the rubber particles will have a vertical upward motion tendency. In order to prevent the rubber particles from moving to the outside of the crushing chamber 1, the height of the crushing chamber 1 needs to be increased. At the same time, when the vertically upward rubber particles fall back, they will interact with the end of the shear blade 5 near the central shaft 4, thus weakening the secondary interaction effect between the rubber particles and the shear blade 5.

[0074] Please see Figures 7-9 The length direction of the filter hole 701 is towards the side wall of the crushing box 1, and the material sprayed through the filter hole 701 can act on the lower part of the extension ring 101.

[0075] The reverse jet assembly is disposed inside the crushing chamber 1. The reverse nozzle assembly is capable of stepping and acting on the filter hole 701 to push out the rubber particles blocked on the filter hole 701. The reverse jet assembly includes: a stepping drive assembly, a pump pressure assembly, and a fixing ring 18.

[0076] The stepper drive assembly is mounted on the crushing chamber 1 and connected to the air pump pipe 6. The stepper drive assembly includes a second motor 9 mounted on the crushing chamber 1 and a rotating sleeve 10 rotatably mounted on the air pump pipe 6. The rotating sleeve 10 is connected to the output shaft of the second motor 9 via a belt.

[0077] The stepping assembly also includes a connecting plate 11 connected to the rotating sleeve 10. The connecting plate 11 is connected to the pump pressure assembly, and the nozzles 1101 are equidistantly arranged on the connecting plate 11.

[0078] In this embodiment, the second motor 9 drives the connecting plate 11 to rotate, so that the nozzle 1101 sequentially connects with the filter hole 701. With the cooperation of the pump pressure assembly and the guide groove, the rubber particles are sprayed in reverse, which can blow away the rubber particles blocked in the filter hole 701 and improve the filtration effect of the filter hole 701.

[0079] Since the length direction of the filter hole 701 is oriented towards the side wall of the crushing chamber 1, the compressed gas ejected through the filter hole 701 can act on the inner wall of the crushing chamber 1. When it moves along the inner wall of the crushing chamber 1, it is blocked by the lower part of the extension ring 101, thereby reducing the speed of the compressed gas when it moves to the top of the crushing chamber 1. This prevents the upward support force from the rubber particles ejected from the central shaft 4 from being pushed upward, ensuring that the circulating rubber particles can make parabolic motion and fall back into the crushing chamber 1.

[0080] Please see Figure 4 , Figures 8-10 The pump pressure assembly is connected to the drive assembly, and the pump pressure assembly is provided with a plurality of nozzles 1101 adapted to the filter orifice 701;

[0081] The pump pressure assembly includes a hysteresis sleeve 12 connected to the connecting plate 11. A sealing plug 13 is slidably installed inside the hysteresis sleeve 12. A telescopic plate 14 that penetrates the hysteresis sleeve 12 is connected to the sealing plug 13. The telescopic plate 14 is rotatably connected to the convex shaft 17.

[0082] A cylindrical spring 15 is sleeved on the telescopic plate 14. One end of the cylindrical spring 15 is connected to the sealing plug 13, and the other end is connected to the side wall of the hysteresis sleeve 12.

[0083] The hysteresis sleeve 12 is also provided with two sets of one-way valves with opposite conduction directions, one of which is connected to the nozzle 1101 through the conduit 16.

[0084] The fixing ring 18 is installed inside the crushing chamber 1. The fixing ring 18 is provided with multiple sets of guide grooves connected end to end. The convex shaft 17, which is rotatably connected to the pump pressure assembly, can roll in the guide groove. The guide groove includes an inclined groove 1801 and a straight groove 1802 provided on the fixing ring 18. The extension line of the straight groove 1802 passes through the center of the conical filter element 7.

[0085] In this embodiment, when the connecting plate 11 makes a stepping circular motion, the pump assembly can follow it in a circular motion. When the nozzle 1101 is coaxial with the filter hole 701, the connecting plate 11 will stop moving. During this process, the cam shaft 17 can move along the inclined groove 1801, allowing external air to enter the hysteresis sleeve 12 through one of the one-way valves. At the same time, the column spring 15 is compressed. When the nozzle 1101 is coaxial with the filter hole 701, the cam shaft 17 enters the straight groove 1802. At this time, the column spring 15 can release elastic potential energy to compress the air in the hysteresis sleeve 12, so that the compressed gas enters the conduit 16 through another one-way valve and is sprayed into the filter hole 701 by the nozzle 1101 to push out the rubber particles blocking the filter hole 701.

[0086] It should be noted that, in the action of the cylindrical spring 15 releasing elastic potential energy, it can quickly compress the air in the hysteresis sleeve 12, so that the air can be blown toward the filter hole 701 at a large flow rate, and can act on the filter hole 701 with a large force, preventing the force between the rubber particles and the inner wall of the filter hole 701 from being too large and unable to be pushed out, thereby improving the removal effect of the rubber particles clogging the filter hole 701 and ensuring the filtration effect of the filter hole 701.

[0087] Based on the above settings, after the nozzle 1101 moves to the predetermined position, it can automatically perform the blowing action on the filter hole 701, so that the movement of the nozzle 1101 and the blowing action have better coordination and reduce the action delay and action error between the two.

[0088] In another embodiment, the pump assembly and retaining ring 18 described above can also be replaced by an air pump, so that when the nozzle 1101 coincides with the filter hole 701, the air pump generates a high-pressure airflow toward the nozzle 1101 to push out the rubber particles blocked in the filter hole 701.

[0089] In the other embodiment described above, to ensure the blowing effect, the distance between the nozzle 1101 and the lower side wall of the conical filter element 7 is small. If the air pump is always in operation, when the nozzle 1101 does not overlap with the filter hole 701, the nozzle 1101 is essentially blocked. This will increase the load on the air pump and damage the seals and lubrication system. Therefore, when using the air pump, it is necessary to combine it with a position sensor and a control system for coordinated control. The position sensor includes, but is not limited to, a vision sensor. The vision sensor and the control system work together to achieve intelligent control. Furthermore, the control system and the vision sensor only control the start and stop of the air pump when the nozzle 1101 moves to a predetermined position. This is a relatively conventional control method, so this embodiment will not elaborate further.

[0090] As an embodiment of the present invention, a decomposition method is also proposed, using the aforementioned nitrile rubber waste recycling and glove manufacturing rubber decomposition device, comprising the following steps:

[0091] Step 1: Control the crushing structure to move and pour the block rubber to be crushed onto the guide 8. The guide 8 can guide the block rubber into the crushing chamber 1.

[0092] Step 2: After the block rubber comes into contact with the crushing structure, it is sheared. At the same time, the block rubber moves in the crushing chamber 1. When the block rubber collides with the extension ring 101, the extension ring 101 can bounce the block rubber upward.

[0093] Step 3: The crushed rubber will fall into the circulation component, where it will be filtered and the rubber particles larger than the predetermined particle size will move towards the upper part of the crushing chamber 1 for cyclic crushing.

[0094] Step 4: When the stepper drive component is activated, it enables the pump component to perform a circular motion. During this process, the pump component cooperates with the guide groove and can spray high pressure into the filter hole 701 to push out the rubber particles that are blocked on the filter hole 701.

[0095] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0096] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rubber decomposition device for recovering gloves from nitrile glove waste, characterized by, The application relates to a rubber breaking device. The device comprises a breaking box (1) in which a plurality of extension rings (101) are arranged along the length direction of the breaking box (1); a breaking structure is arranged in the breaking box (1), the middle part of the breaking structure is in a hollow structure; the breaking structure comprises a central shaft (4) which is rotatably arranged in the breaking box (1), the inside of the central shaft (4) is in a hollow structure, a plurality of shearing knives (5) are arranged on the central shaft (4) in a circle and equidistantly, the shearing knives (5) extend to the lower part of the extension rings (101); when the gravity center of the block-shaped rubber is located in the upper part of the shearing knives (5), the shearing knives (5) exert a breaking force to cut the rubber, the block-shaped rubber is broken into large and small pieces, and the broken large block-shaped rubber is given an inclined upward motion kinetic energy, so that the large block-shaped rubber flies to the upper extension ring (101) or the inner wall of the breaking box (1) after leaving the shearing knives (5), and then falls to the breaking operation interval again to be acted on by the shearing knives (5) again; when the gravity center of the block-shaped rubber is located in the lower part of the shearing knives (5), the shearing knives (5) give the broken large block-shaped rubber an inclined downward motion kinetic energy, so that the large block-shaped rubber impacts the surface of the lower extension ring (101), the lower extension ring (101) gives a reaction force to lift the large block-shaped rubber to bounce upward and re-enter the breaking range of the shearing knives (5); when the gravity center of the block-shaped rubber is accurately located in the same plane as the shearing knives (5), the symmetrical blade edges of the shearing knives (5) uniformly divide the block-shaped rubber into two parts, and the two broken parts move upward or downward along the inclined direction and interact with the shearing knives (5) for multiple times. A circulating assembly is arranged in the breaking box (1) and connected with the breaking structure, the circulating assembly can pump the rubber particles larger than the predetermined particle size to the upper part of the breaking box (1), and filter holes (701) are arranged on the circulating assembly. A reverse blowing assembly is arranged in the breaking box (1), the reverse blowing assembly can step and act on the filter holes (701) to push out the rubber particles blocked in the filter holes (701). A guide (8) is arranged on the upper part of the breaking box (1), the upper side of the guide (8) is provided with a first conical part (801), and the lower side of the guide (8) is provided with a second conical part (802). The side of the cross section of the second conical part (802) is an arc line which is recessed towards the inside. The circulating assembly comprises a conical filter (7) arranged in the breaking box (1), and the filter holes (701) are arranged in multiple groups and uniformly distributed on the conical filter (7) in a circle.

2. The rubber decomposition device for recycling nitrile rubber waste to make gloves according to claim 1, characterized in that, The circulating assembly further comprises a pump air pipe (6) connected with the conical filter (7) and extending to the outside of the breaking box (1), and the upper end of the pump air pipe (6) is sealingly and rotatably connected with the lower end of the central shaft (4). The pump air pipe (6) is provided with a backflow hole (601) on the upper part of the conical filter (7). ​ 3. The device according to claim 2, wherein the device is a glove rubber decomposing device for recovering butyronitrile rubber waste. The length direction of the filter hole (701) is towards the side wall of the crushing box (1), and the material sprayed through the filter hole (701) can act on the lower part of the extension ring (101).

4. The device according to claim 2, wherein the device is used for decomposing the rubber of the nitrile glove waste. The reverse blowing assembly comprises: The step-by-step driving assembly is arranged on the crushing box (1) and connected with the pump pipe (6); The pump assembly is connected with the driving assembly, and a plurality of nozzles (1101) matched with the filter hole (701) are arranged on the pump assembly; The fixed ring (18) is installed in the crushing box (1), and a plurality of guide grooves connected in sequence are arranged on the fixed ring (18), and the convex shaft (17) rotatably connected with the pump assembly can roll in the guide groove.

5. The rubber decomposition device for recycling nitrile rubber waste to make gloves according to claim 4, characterized in that, The step-by-step driving assembly comprises a second motor (9) installed on the crushing box (1) and a rotating sleeve (10) rotatably installed on the pump pipe (6), and the rotating sleeve (10) is connected with the output shaft of the second motor (9) through a belt; The step-by-step driving assembly further comprises a connecting plate (11) connected with the rotating sleeve (10), and the connecting plate (11) is connected with the pump assembly, and the nozzles (1101) are equidistantly arranged on the connecting plate (11).

6. The device according to claim 5, wherein the device is used for decomposing the rubber of the nitrile glove waste. 5 The pump assembly comprises a lagging sleeve (12) connected with the connecting plate (11), a sealing plug (13) is sealingly and slidably installed in the lagging sleeve (12), the sealing plug (13) is connected with an expansion plate (14) penetrating through the lagging sleeve (12), and the expansion plate (14) is rotatably connected with the convex shaft (17); A cylindrical spring (15) is sleeved on the expansion plate (14), one end of the cylindrical spring (15) is connected with the sealing plug (13), and the other end is connected with the side wall of the lagging sleeve (12); Two groups of one-way valves with opposite directions are further arranged on the lagging sleeve (12), and one group of the one-way valves is connected with the nozzles (1101) through a conduit (16).

7. The device according to claim 4, wherein the device is used for decomposing the rubber of the nitrile glove waste. The guide groove comprises an inclined groove (1801) and a straight groove (1802) arranged on the fixed ring (18), and the extension line of the straight groove (1802) passes through the center of the conical filter (7).

8. A decomposition method using the rubber decomposition apparatus for recovering gloves from nitrile glove waste according to any one of claims 1 to 7, characterized by, The method comprises the following steps: Step one: control the action of the crushing structure, and pour the blocky rubber to be crushed onto the guide (8), and the guide (8) can guide the blocky rubber into the crushing box (1); Step two: after the blocky rubber contacts the crushing structure, it is sheared, and at the same time, the blocky rubber moves in the crushing box (1), and when the blocky rubber collides with the extension ring (101), the extension ring (101) can pop up the blocky rubber upward; Step three: the crushed rubber falls into the circulating assembly, is filtered by the circulating assembly, and the rubber particles larger than the predetermined particle size after crushing move towards the upper part of the crushing box (1) to be crushed again; Step four: when the step-by-step driving assembly acts, the pump assembly can make a circular motion, and in this process, the pump assembly cooperates with the guide groove, and can spray high pressure into the filter hole (701) to push out the rubber particles blocked in the filter hole (701).

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