Rubber decomposition device and method for manufacturing gloves by recovering butadiene-acrylonitrile rubber waste

Abstract

The invention relates to the technical field of waste rubber recovery, in particular to a rubber decomposition device for manufacturing gloves by recovering butadiene-acrylonitrile rubber waste and a decomposition method thereof.The rubber decomposition device comprises a crushing box body, and multiple sets of extension rings arranged in the length direction of the crushing box body are installed in the crushing box body; the crushing structure is arranged in the crushing box body, and the middle of the crushing structure is of a hollow structure; the circulating assembly is installed in the crushing box body and connected with the crushing structure, the circulating assembly can pump the crushed rubber particles larger than the preset particle size back to the upper portion of the crushing box body, and filter holes are formed in the circulating assembly; and the reverse spraying and blowing assembly is arranged in the crushing box body, and the reverse spraying and blowing assembly can act in a stepping mode and act on the filtering holes so as to eject the rubber particles blocking the filtering holes out, full crushing is achieved, and the uniformity of the crushed rubber particles is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of waste rubber recycling, and particularly to a rubber decomposition device and a decomposition method for recycling waste nitrile rubber into gloves. Background Art

[0002] Waste nitrile rubber has great significance in recycling due to its wide sources, including waste gloves, seals, etc. It can not only achieve resource recycling, reduce environmental pollution, but also create secondary economic value. During the recycling process, a crusher is required, and the vertical crusher, as a common device, is widely used in the recycling of waste nitrile rubber.

[0003] The vertical crusher mainly consists of components such as a machine body, a main shaft, cutting tools, and bearings. After the rubber waste is poured into the machine body, it falls under the action of gravity and interacts with the high-speed rotating cutting tools, thereby realizing the shearing and crushing of the rubber. During the crushing process, the movement trajectory of the rubber will change at different positions where the cutting tools interact with the rubber, and this movement trajectory includes an upward-inclined or downward-inclined movement trajectory. When the rubber shows an upward-inclined movement, it will fall under the action of gravity and interact with the cutting tools again, thus realizing secondary shearing and improving the crushing effect. However, when the rubber shows a downward-inclined movement, it will instead accelerate the falling speed of the rubber, resulting in insufficient shearing and crushing. Even with a circulation device set, it is still difficult to avoid this situation, resulting in a relatively long overall crushing time and affecting the improvement of the recycling efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a rubber decomposition device and a decomposition method for recycling waste nitrile rubber into gloves to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A rubber decomposition device for recycling waste nitrile rubber into gloves, comprising: A crushing box body, in which a plurality of extension rings are installed along its length direction; A crushing structure, arranged in the crushing box body, and the middle part of the crushing structure is of a hollow structure; A circulation component, installed in the crushing box body and connected to the crushing structure, the circulation component can pump back the rubber particles larger than a predetermined particle size after crushing to the upper part of the crushing box body, and filter holes are provided on the circulation component; A reverse blowing component, arranged in the crushing box body, and the reverse nozzle component can perform a step-by-step action and act on the filter holes to eject the rubber particles blocked on the filter holes.

[0006] As a further solution of the present invention: the crushing structure includes a central shaft rotatably installed in the crushing box, the interior of the central shaft is a hollow structure, and a plurality of groups of shearing knives are equidistantly arranged on the central shaft in a circle, and the shearing knives extend to the lower part of the extension ring.

[0007] As a further solution of the present invention: the circulation assembly comprises a conical filter installed in the crushing box, and the filter holes are arranged in a plurality of groups and are evenly distributed on the conical filter in a circumferential manner; The circulation assembly further comprises a pump air pipe connected to the conical filter element and extending to the outside of the crushing box, wherein the upper end of the pump air pipe is sealed and rotatably connected to the lower end of the central shaft; The pump air pipe is located on the upper part of the conical filter element and is provided with a reflux hole.

[0008] As a further solution of the present invention: a guide is further provided on the upper part of the crushing box, a first cone is provided on the upper side of the guide, and a second cone is provided on the lower side; The side edge of the cross section of the second cone member is an arc line concave toward the inside.

[0009] As a further solution of the present invention: the length direction of the filter hole is toward the side wall of the crushing box, and the material sprayed through the filter hole can act on the lower part of the extension ring.

[0010] As a further solution of the present invention: the reverse blowing assembly comprises: A stepping drive assembly, arranged on the crushing box and connected to the pump air pipe; A pump pressure assembly is connected to the driving assembly, and the pump pressure assembly is provided with a plurality of nozzles adapted to the filter holes; A fixed ring is installed in the crushing box, and a plurality of guide grooves connected end to end are arranged on the fixed ring, and a convex shaft rotatably connected to the pump pressure assembly can roll in the guide grooves.

[0011] As a further solution of the present invention: the stepping drive assembly comprises a second motor mounted on the crushing box and a rotating sleeve rotatably mounted on the pump air pipe, the rotating sleeve being connected to the output shaft of the second motor via a belt; The stepping assembly also includes a connecting plate connected to the rotating sleeve, the connecting plate is connected to the pump pressure assembly, and the nozzles are equidistantly arranged on the connecting plate.

[0012] As a further solution of the present invention: the pump pressure assembly includes a hysteresis sleeve connected to the connecting plate, a sealing plug is sealingly and slidably installed in the hysteresis sleeve, a telescopic plate penetrating the hysteresis sleeve is connected to the sealing plug, and the telescopic plate is rotatably connected to the convex shaft; A cylindrical spring is sleeved on the telescopic plate. One end of the cylindrical spring is connected to the sealing plug, and the other end is connected to the side wall of the retention sleeve; Two groups of one-way valves with opposite conduction directions are further arranged on the retention sleeve, and one group of one-way valves is connected to the nozzle through a conduit.

[0013] As a further solution of the present invention: the guiding groove includes an inclined groove and a straight groove provided on the fixed ring, wherein the extension line of the straight groove passes through the center of the conical filter element.

[0014] A decomposition method uses the rubber decomposition device for recycling waste nitrile rubber to make gloves, and includes the following steps: Step 1: Control the crushing structure to act, and pour the block rubber to be crushed onto the guiding member, and the guiding member can guide the block rubber into the crushing box body; Step 2: After the block rubber contacts the crushing structure, it is sheared. At the same time, the block rubber moves in the crushing box body. When the block rubber collides with the extension ring, the extension ring can bounce the block rubber upward; Step 3: The rubber after crushing will fall into the circulating assembly, and the circulating assembly will filter it, and make the rubber particles larger than the predetermined particle size move towards the upper part of the crushing box body for circulating crushing; Step 4: When the stepping drive assembly acts, it can make the pump pressure assembly perform a circular motion. During this process, the pump pressure assembly cooperates with the guiding groove, and can spray high pressure into the filter holes to eject the rubber particles blocked on the filter holes.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The shear knife can crush the block rubber in all directions and at multiple angles. According to the specific position, angle and kinetic energy transfer characteristics of the instantaneous interaction between the block rubber and the shear knife, the movement trajectory and residence time of the block rubber in the crushing box body are skillfully regulated. This makes the block rubber have to go through repeated crushing and grinding. Each collision and cutting moves towards a finer and more uniform particle shape. Finally, the output rubber particles are superior to the traditional crushing process in key quality indicators such as particle size distribution and shape regularity; Under the action of the circulating assembly, after crushing is completed, the rubber particles larger than the predetermined particle size can be pumped back to the top of the crushing box body, and then can fall again under the action of gravity, and when interacting with the shear knife, a re-crushing effect is generated; By means of the provided pump pressure assembly and fixed ring, high-pressure blowing can be carried out when the nozzle coincides with the filter hole, so as to eliminate the rubber particles blocked on the filter hole, improve the filtering effect of the filter hole, and this blowing effect is realized mechanically, enabling better coordination between the movement of the nozzle and the blowing action, and reducing the action delay and action error between the two. Brief Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of an embodiment of a rubber decomposition device for recycling waste nitrile rubber into gloves.

[0017] Figure 2 It is a schematic structural diagram of another angle in an embodiment of a rubber decomposition device for recycling waste nitrile rubber into gloves.

[0018] Figure 3 It is a partial cross-sectional perspective view of an embodiment of a rubber decomposition device for recycling waste nitrile rubber into gloves.

[0019] Figure 4 It is a half-sectional view of an embodiment of a rubber decomposition device for recycling waste nitrile rubber into gloves.

[0020] Figure 5 It is a schematic diagram of the movement direction after the interaction between the rubber and the shear knife in an embodiment of a rubber decomposition device for recycling waste nitrile rubber into gloves.

[0021] Figure 6 It is a schematic structural diagram of a circulation assembly in an embodiment of a rubber decomposition device for recycling waste nitrile rubber into gloves.

[0022] Figure 7 It is a schematic structural diagram of a conical filter element and filter holes in an embodiment of a rubber decomposition device for recycling waste nitrile rubber into gloves.

[0023] Figure 8 It is a schematic structural diagram of a stepper drive assembly, a pump pressure assembly, and a fixed ring in an embodiment of a rubber decomposition device for recycling waste nitrile rubber into gloves.

[0024] Figure 9 It is a schematic structural diagram of a pump pressure assembly in an embodiment of a rubber decomposition device for recycling waste nitrile rubber into gloves.

[0025] Figure 10 It is a schematic structural diagram of a guiding groove in an embodiment of a rubber decomposition device for recycling waste nitrile rubber into gloves.

[0026] In the figure: 1. Crushing box body; 101. Extension ring; 2. First motor; 3. Connecting belt; 4. Central shaft; 5. Shearing knife; 6. Pump air pipe; 601. Return hole; 7. Conical filter element; 701. Filter hole; 8. Guide piece; 801. First conical piece; 802. Second conical piece; 9. Second motor; 10. Rotating sleeve; 11. Connecting plate; 1101. Nozzle; 12. Retaining sleeve; 13. Sealing plug; 14. Telescopic plate; 15. Cylindrical spring; 16. Duct; 17. Convex shaft; 18. Fixed ring; 1801. Inclined groove; 1802. Straight groove. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] In addition, an element in the present invention is referred to as being "fixed to" or "disposed on" another element, which may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manners.

[0029] Please refer to Figures 1 to 10 , in the embodiment of the present invention, a rubber decomposition device for recycling waste butadiene rubber into gloves includes: a crushing box body 1, a crushing structure, a circulating assembly and a reverse blowing assembly.

[0030] A plurality of groups of extension rings 101 arranged along the length direction thereof are installed in the crushing box body 1; The crushing structure is arranged in the crushing box body 1. The middle part of the crushing structure is of a hollow structure. The crushing structure includes a central shaft 4 rotatably installed in the crushing box body 1. The inside of the central shaft 4 is of a hollow structure, and a plurality of groups of shearing knives 5 are arranged at equal circumferential intervals on the central shaft 4. The shearing knives 5 extend to the lower part of the extension ring 101. Among them, a first motor 2 is installed on the crushing box body 1, and the output shaft of the first motor 2 is connected to the central shaft 4 through a connecting belt 3.

[0031] In this embodiment, during the crushing operation, the first motor 2 is operated, and the transmission is transmitted through the connecting belt 3, driving the central shaft 4 and the shearing knife 5 thereon into a high-speed rotation state. When the block rubber is put into the crushing box 1, it will interact with the shearing knife 5 with a high-speed rotating load. With the help of the sharp edge of the shearing knife 5, the large block of rubber is gradually cut and torn until it is granulated, laying a good material foundation for subsequent operations such as fine grinding and chemical treatment of rubber, and significantly improving the fluency and connectivity of the entire rubber processing process.

[0032] A closer look at the instantaneous interaction between the block rubber and the shear blade 5 (see Figure 5 ), it can be found that the block rubber presents three completely different motion states: First, when the center of gravity of the block rubber is located just above the blade of the shear knife 5, the shear knife 5 not only cuts into the rubber at the moment of applying the crushing force, but also gives it kinetic energy of inclined upward movement. The inclination angle is exquisitely designed, so that after the block rubber escapes from the initial action of the shear knife 5, it flies to the inner wall of the extension ring 101 or the crushing box 1, causing a powerful collision. The reaction force generated by the collision, combined with the gravity of the block rubber itself, causes it to fall back to the crushing operation area, so that it can have a second or even multiple close contact and interaction with the shear knife 5 with a high-speed rotating load, thereby greatly increasing the frequency of the block rubber undergoing the crushing process from the root, creating the prerequisite for sufficient crushing.

[0033] Secondly, when the center of gravity of the block rubber is at the lower position of the blade of the shear knife 5, the shear knife 5 gives the block rubber an instantaneous downward movement tendency during the crushing process. This guiding design allows the block rubber to accurately hit the surface of the carefully configured extension ring 101 at the lower part of the shear knife 5. At the moment of impact, according to the principles of physical mechanics, the reverse force gushes out, strongly lifting the block rubber to make it tilt and bounce upward, and then jump into the core operating area of ​​the crushing box 1 again, and re-enter the crushing range of the shear knife 5, which cleverly extends the time for the block rubber to participate in crushing, and further explores and improves the potential and efficiency of the interaction between the shear knife 5 and the block rubber.

[0034] Thirdly, if the center of gravity of the block rubber and the blade of the shear knife 5 are precisely in the same plane, the shear knife 5 can evenly divide the block rubber into two along the plane with its sharp and symmetrical blade layout. This precise binary splitting crushing mode effectively avoids the subsequent processing difficulties caused by the different sizes and shapes of rubber particles, ensures that the output rubber particles are highly consistent in size specifications, and greatly optimizes the uniformity index of rubber crushing. For the production process of pursuing high-quality rubber products, this feature is undoubtedly of key value. At the same time, when the block rubber is divided into two, the two broken parts can move upward or downward respectively along the inclined direction, so that the block rubber at this time can also interact with the shear knife 5 multiple times.

[0035] Based on the above structural layout and working principle, when the crushing device processes block rubber, the shear knife 5 can launch a crushing attack on the block rubber in all directions and at multiple angles. According to the specific position, angle and kinetic energy transfer characteristics of the instantaneous interaction between the block rubber and the shear knife 5, the movement trajectory and residence time of the block rubber in the crushing box 1 are cleverly regulated, which forces the block rubber to undergo repeated crushing and grinding. Each collision and cutting moves towards a finer and more uniform particle form. The rubber particles finally output are superior to traditional crushing processes in key quality indicators such as particle size distribution and morphological regularity, which effectively promotes the vigorous development of the rubber processing industry towards high efficiency and refinement.

[0036] Furthermore, in actual use, the nitrile rubber waste needs to undergo a coarse crushing process first to make it bulky. The subsequent crushing process can make the nitrile rubber waste particle size smaller, which is convenient for subsequent storage and reuse.

[0037] See also Figures 3 to 6 The circulation component is installed in the crushing box 1 and connected to the crushing structure. The circulation component can pump the crushed rubber particles larger than the predetermined particle size back to the upper part of the crushing box 1, and the circulation component is provided with a filter hole 701; The circulation assembly comprises a conical filter element 7 installed in the crushing box 1, and the filter holes 701 are arranged in multiple groups and are evenly distributed on the conical filter element 7 in a circumferential manner; The circulation assembly further comprises a pump air pipe 6 connected to the conical filter element 7 and extending to the outside of the crushing box 1, wherein the upper end of the pump air pipe 6 is sealed and rotatably connected to the lower end of the central shaft 4; The pump air pipe 6 is provided with a reflux hole 601 at the upper portion of the conical filter element 7 .

[0038] After the crushing is completed, the rubber particles can fall onto the conical filter 7. At this time, the rubber particles that meet the predetermined particle size can pass through the conical filter 7 through the filter hole 701, while the rubber particles larger than the predetermined particle size cannot pass through the filter hole 701. In this process, these rubber particles can move toward the middle along the inner side of the conical filter 7 under the action of gravity, enter the pump air pipe 6 through the reflux hole 601, and then pass through the central axis 4 to be blown to the top of the crushing box 1.

[0039] Specifically, the end of the pump air pipe 6 is connected to a pump air device (not shown in the figure), which can transport compressed gas into the pump air pipe 6, and the compressed gas can enter the center shaft 4 through the pump air pipe 6. This arrangement enables rubber particles larger than a predetermined particle size to be pushed into the center shaft 4 by the compressed gas when they enter the pump air pipe 6, so that these rubber particles are re-transported to the upper part of the crushing box 1, thereby realizing cyclic crushing and ensuring the crushing effect.

[0040] Furthermore, when the compressed gas moves in the pump air pipe 6, since the air flow rate inside the reflux hole 601 is much greater than the air flow rate outside it, a certain negative pressure can be generated outside the reflux hole 601. Under the action of this negative pressure, rubber particles larger than a predetermined particle size at the reflux hole 601 can be drawn into the pump air pipe 6, thereby avoiding the accumulation of rubber particles at the reflux hole 601 to a certain extent.

[0041] Based on the above arrangement, after the crushing is completed, the rubber particles larger than the predetermined particle size can be pumped back to the top of the crushing box 1, and then can fall again under the action of gravity, and produce a crushing effect again when interacting with the shear knife 5.

[0042] A guide member 8 is also provided on the upper part of the crushing box 1, and a first cone member 801 is provided on the upper side of the guide member 8, and a second cone member 802 is provided on the lower side; The side edge of the cross section of the second cone member 802 is an arc line that is concave toward the inside.

[0043] Under the action of the first cone 801, when the block rubber is poured into the crushing box 1, it can be evenly dispersed in the crushing box 1, thereby preventing the block rubber from accumulating in a certain space and causing the shear knife 5 to fail to act well on the block rubber.

[0044] Furthermore, since the block rubber is evenly dispersed after entering the crushing box 1, the block rubber interacts with the end of the shearing knife 5 away from the central axis 4. When the block rubber and the shearing knife 5 act upward and have a tendency to tilt, they can have a smaller distance difference with the extension ring 101, so that the block rubber with a tendency to tilt can have a greater degree of collision with the extension ring 101, and then through bouncing, the block rubber can interact with the shearing knife 5 in multiple directions, thereby improving the shearing effect.

[0045] In the case where the first conical member 801 is not provided, the bulk rubber interacts with the end of the shear blade 5 close to the central axis 4. At this time, when the bulk rubber has a tendency to tilt, first, it cannot be guaranteed that it can generate an interaction force with the extension ring 101 and has a tendency to bounce upward. Second, even if the bulk rubber collides with the extension ring 101, the degree of this collision is small, and it cannot well enable the bulk rubber to interact with the corresponding shear blade 5 for the second time.

[0046] When rubber particles larger than a predetermined particle size are ejected from the upper part of the central axis 4, their movement trajectories can be changed under the action of the second conical member 802. Specifically, the rubber particles are switched from a vertical movement trajectory to a slightly inclined upward movement trajectory. At this time, due to the decrease in the movement speed of the compressed gas, the kinetic energy of the rubber particles needs to overcome their own gravity, enabling the rubber particles to perform a parabolic motion and then fall back into the crushing box 1. Compared with the case where the second conical member 802 is not provided, the rubber particles will have a tendency to move vertically upward. In order to prevent the rubber particles from moving outside the crushing box 1, the height of the crushing box 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 close to the central axis 4, weakening the secondary action effect of the rubber particles and the shear blade 5.

[0047] Please refer to Figures 7 to 9 , the length direction of the filter hole 701 faces the side wall of the crushing box 1, and the material ejected through the filter hole 701 can act on the lower part of the extension ring 101; The reverse blowing assembly is arranged in the crushing box 1. The reverse nozzle assembly can perform a stepping action and act on the filter hole 701 to eject the rubber particles blocked on the filter hole 701. The reverse blowing assembly includes: a stepping drive assembly, a pump pressure assembly, and a fixing ring 18.

[0048] The stepping drive assembly is arranged on the crushing box 1 and is connected to the pump air pipe 6. The stepping drive assembly includes a second motor 9 installed on the crushing box 1 and a rotating sleeve 10 rotatably installed on the pump air pipe 6. The rotating sleeve 10 is connected to the output shaft of the second motor 9 through a belt; The stepping assembly further includes a connecting plate 11 connected to the rotating sleeve 10. The connecting plate 11 connects the pump pressure assembly, and the nozzles 1101 are equidistantly arranged on the connecting plate 11.

[0049] In this embodiment, the second motor 9 step - drives the connecting plate 11 to rotate, so that the nozzles 1101 are sequentially communicated with the filter holes 701, and under the cooperation of the pump pressure assembly and the guiding groove, reverse blowing of the rubber particles is realized, enabling the rubber particles blocked in the filter holes 701 to be blown away and improving the filtering effect of the filter holes 701.

[0050] Since the length direction of the filter holes 701 faces the side wall of the crushing box body 1, the compressed gas ejected through the filter holes 701 can act on the inner wall of the crushing box body 1 and is blocked by the lower part of the extension ring 101 when moving along the inner wall of the crushing box body 1, thereby weakening the speed of the compressed gas when it moves to the top of the crushing box body 1, preventing an upward supporting force from being generated on the rubber particles ejected by the central shaft 4, causing the rubber particles to be lifted upward, and ensuring that the circulating rubber particles can move in a parabolic motion and fall back into the crushing box body 1.

[0051] Please refer to Figure 4 、 Figures 8 to 10 The pump pressure assembly is connected to the drive assembly, and multiple groups of nozzles 1101 adapted to the filter holes 701 are arranged on the pump pressure assembly; The pump pressure assembly includes a retention sleeve 12 connected to the connecting plate 11. A sealing plug 13 is hermetically and slidably installed in the retention sleeve 12. A telescopic plate 14 penetrating through the retention sleeve 12 is connected to the sealing plug 13, and the telescopic plate 14 is rotatably connected to the convex shaft 17; 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 retention sleeve 12; Two groups of one-way valves with opposite conduction directions are further arranged on the retention sleeve 12. One group of one-way valves is connected to the nozzle 1101 through a conduit 16; The fixing ring 18 is installed in the crushing box body 1. Multiple groups of guiding grooves connected end to end in sequence are arranged on the fixing ring 18. The convex shaft 17 rotatably connected to the pump pressure assembly can roll in the guiding grooves. The guiding grooves include an inclined groove 1801 and a straight groove 1802 arranged on the fixing ring 18. Among them, the extension line of the straight groove 1802 passes through the center of the conical filter element 7.

[0052] In this embodiment, when the connecting plate 11 makes a step-by-step circular motion, the pump pressure assembly can follow it to make a circular motion. And when the nozzle 1101 is coaxial with the filter hole 701, the connecting plate 11 will stop moving. During this process, the convex shaft 17 can move along the inclined groove 1801, enabling external air to enter the retention sleeve 12 through one group of one-way valves. At the same time, the cylindrical spring 15 is compressed. When the nozzle 1101 is coaxial with the filter hole 701, the convex shaft 17 enters the straight groove 1802. At this time, the cylindrical spring 15 can release elastic potential energy to compress the air in the retention sleeve 12, so that the compressed gas enters the conduit 16 through the other group of one-way valves and is sprayed into the filter hole 701 by the nozzle 1101 to eject the rubber particles blocked in the filter hole 701.

[0053] It should be noted that when the cylindrical spring 15 releases its 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 higher flow rate, and can act on the filter hole 701 with a larger force, preventing the rubber particles from being unable to be ejected due to the excessive force between the rubber particles and the inner wall of the filter hole 701, thereby improving the cleaning effect of the rubber particles blocked in the filter hole 701 and ensuring the filtering effect of the filter hole 701.

[0054] Based on the above arrangement, after the nozzle 1101 moves to a predetermined position, the blowing action on the filter hole 701 can be automatically performed, 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.

[0055] In another embodiment, the above-mentioned pump pressure assembly and the fixing ring 18 can also be equivalently 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; With respect to the above-mentioned another embodiment, in order to ensure the spraying 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 working state, when the nozzle 1101 does not overlap with the filter hole 701, the nozzle 1101 is equivalent to being blocked. At this time, the load on the air pump will be greater, and various seals and lubrication systems will be damaged. Therefore, when using the air pump, it is necessary to combine the position sensor and the control system for coordinated control. The position sensor includes but is not limited to the visual sensor. The visual sensor cooperates with the control system to realize intelligent control. Secondly, the control system and the visual sensor only realize the start and stop control of the air pump when the nozzle 1101 moves to the predetermined position, which is a more conventional control method. Therefore, this embodiment will not elaborate on this.

[0056] As an embodiment of the present invention, a decomposition method is also proposed, using the rubber decomposition device for recycling nitrile rubber waste to make gloves, comprising the following steps: Step 1: Control the action of the crushing structure and pour the block rubber to be crushed onto the guide 8, which can guide the block rubber into the crushing box 1; Step 2: After the block rubber contacts the crushing structure, it is sheared, and at the same time, the block rubber moves in the crushing box 1. When the block rubber collides with the extension ring 101, the extension ring 101 can bounce the block rubber upward; Step 3: The crushed rubber will fall into the circulation component, where it will be filtered and the crushed rubber particles larger than the predetermined particle size will move toward the upper part of the crushing box 1 for cyclic crushing; Step 4: When the stepper drive assembly operates, it can make the pump pressure assembly perform circular motion. During this process, the pump pressure assembly cooperates with the guiding groove, and can spray high pressure into the filter hole 701, ejecting the rubber particles blocking the filter hole 701.

[0057] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0058] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard 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 recycling waste nitrile rubber to make gloves, characterized in that, Comprising: A crushing box body (1), in which a plurality of extension rings (101) arranged along its length direction are installed; A crushing structure, arranged in the crushing box body (1), and the middle part of the crushing structure is of a hollow structure; A circulation assembly, installed in the crushing box body (1) and connected to the crushing structure, the circulation assembly can pump the rubber particles larger than a predetermined particle size after crushing back to the upper part of the crushing box body (1), and filter holes (701) are arranged on the circulation assembly; A reverse blowing assembly, arranged in the crushing box body (1), and the reverse nozzle assembly can perform a stepping action and act on the filter holes (701) to eject the rubber particles blocked on the filter holes (701).

2. The rubber decomposition device for recycling waste nitrile rubber into gloves according to claim 1, wherein, The crushing structure includes a central shaft (4) rotatably installed in the crushing box body (1), the inside of the central shaft (4) is of a hollow structure, and a plurality of shear knives (5) are arranged at equal circumferential intervals on the central shaft (4), and the shear knives (5) extend to the lower part of the extension ring (101).

3. The rubber decomposition device for recycling nitrile rubber waste into gloves according to claim 2, wherein, The circulation assembly includes a conical filter element (7) installed in the crushing box body (1), and a plurality of filter holes (701) are arranged and evenly distributed in a circumferential manner on the conical filter element (7); The circulation assembly further includes a pump air pipe (6) connected to the conical filter element (7) and extending to the outside of the crushing box body (1), and the upper end of the pump air pipe (6) is hermetically and rotatably connected to the lower end of the central shaft (4); The pump air pipe (6) is provided with a return hole (601) at the upper part of the conical filter element (7).

4. A rubber decomposition device for recycling waste nitrile rubber into gloves according to claim 1, characterized in that, A guiding member (8) is further arranged at the upper part of the crushing box body (1), a first conical member (801) is arranged on the upper side of the guiding member (8), and a second conical member (802) is arranged on the lower side; The side of the cross section of the second conical member (802) is an arc recessed towards the inside.

5. A rubber decomposition device for recycling nitrile rubber waste into gloves according to claim 3, characterized in that, The length direction of the filter holes (701) faces the side wall of the crushing box body (1), and the material ejected through the filter holes (701) can act on the lower part of the extension ring (101).

6. A rubber decomposition device for recycling nitrile rubber waste into gloves according to claim 3, characterized in that, The reverse blowing assembly includes: A stepping driving assembly, arranged on the crushing box body (1) and connected to the pump air pipe (6); A pump pressure assembly, connected to the driving assembly, and a plurality of nozzles (1101) adapted to the filter holes (701) are arranged on the pump pressure assembly; A fixing ring (18), installed in the crushing box body (1), and a plurality of guiding grooves connected end to end in sequence are arranged on the fixing ring (18), and a convex shaft (17) rotatably connected to the pump pressure assembly can roll in the guiding grooves.

7. The rubber decomposition device for recycling waste nitrile rubber into gloves according to claim 6, characterized in that, The stepping driving assembly includes a second motor (9) installed on the crushing box body (1) and a rotating sleeve (10) rotatably installed on the pump air pipe (6), and the rotating sleeve (10) is connected to the output shaft of the second motor (9) through a belt; The stepping assembly further includes a connecting plate (11) connected to the rotating sleeve (10), the connecting plate (11) connects the pump pressure assembly, and the nozzles (1101) are arranged at equal intervals on the connecting plate (11).

8. A rubber decomposition device for recycling waste nitrile rubber into gloves according to claim 7, characterized in that, The pump pressure assembly comprises a hysteresis sleeve (12) connected to the connecting plate (11), a sealing plug (13) is sealingly and slidably mounted inside the hysteresis sleeve (12), a telescopic plate (14) penetrating the hysteresis sleeve (12) is connected to the sealing plug (13), and the telescopic plate (14) is rotatably connected to the convex shaft (17); 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); Two groups of one-way valves with opposite conduction directions are also provided on the hysteresis sleeve (12), and one group of the one-way valves is connected to the nozzle (1101) via a conduit (16).

9. The rubber decomposition device for recycling nitrile rubber waste into gloves according to claim 6, characterized in that, The guide groove comprises an inclined groove (1801) and a straight groove (1802) provided on the fixing ring (18), wherein an extension line of the straight groove (1802) passes through the center of the conical filter element (7).

10. A decomposition method, which uses the rubber decomposition device for recycling nitrile rubber waste into gloves as described in any one of claims 1 to 9, is characterized in that, The following steps are involved: Step 1: Control the movement of the crushing structure and pour the block rubber to be crushed onto the guide member (8), wherein the guide member (8) can guide the block rubber into the crushing box (1); Step 2: After the block rubber contacts the crushing structure, it is sheared, and at the same time, the block rubber moves in the crushing box (1). When the block rubber collides with the extension ring (101), the extension ring (101) can bounce the block rubber upwards; Step 3: After the rubber is crushed, it falls into the circulation component, where it is filtered and the crushed rubber particles larger than a predetermined particle size are moved toward the upper part of the crushing box (1) for cyclic crushing; Step 4: When the stepping drive assembly is in motion, the pump assembly can make a circular motion. During this process, the pump assembly cooperates with the guide groove to spray high pressure into the filter hole (701) to push out the rubber particles blocked on the filter hole (701).

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