A preparation process of anti-aging rubber for conveyor belts

Abstract

The present invention discloses a preparation process of anti-aging rubber for conveyor belts, belonging to the technical field of rubber preparation. A preparation process of anti-aging rubber for conveyor belts includes: S1, drying; S2, shelling; S3, pressing; S4, leaching; S5, desolventizing. Among them, the shelling machine includes a machine case, and a shell-breaking mechanism and a winnowing mechanism are respectively arranged above and below the machine case. The shell-breaking mechanism includes an electric push rod, a lower pressing plate frame and a conveying assembly. This process avoids the phenomenon that substances such as rubber, resin, and gum in the rubber seed cake in the pre-pressing and leaching process are extracted and block the sieve plate, reduces the residual oil in the meal, improves the oil yield of rubber seeds, and gradually increases the knocking force on the rubber seeds, avoiding excessive downward pressure, which may cause damage to the rubber seed kernels, and the liquid flowing out adheres the rubber seed shells to the rubber seed kernels, resulting in the rubber seed kernels finally obtained containing rubber seed shells.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of rubber preparation, and specifically provides a preparation process for anti-aging rubber used for conveyor belts. Background Art

[0002] A conveyor belt is a rubber, fiber, and metal composite product or a plastic and fabric composite product that plays a role in carrying and transporting materials in a belt conveyor. In the preparation of conveyor belts, rubber is an essential part. The production process of rubber includes processes such as plasticization, mixing, calendering, extrusion, molding, and vulcanization. The processing process of rubber mainly solves the contradiction between plasticity and elasticity. Through various processing means, the elastic raw rubber is turned into plasticized rubber with plasticity, and then various compounding agents are added to make semi-finished products, and then the semi-finished products with plasticity are vulcanized into rubber products with high elasticity and good physical and mechanical properties.

[0003] In order to improve the service life and use effect of conveyor belts, it is imperative to improve the production quality of rubber. Therefore, softeners will surely be added in rubber preparation. Softeners play a filling role between rubber molecules, increasing the intermolecular distance, weakening the interaction between macromolecules, manifested as a decrease in the intermolecular force of rubber molecules, an increase in the mobility of chain segments, a decrease in the glass transition temperature, a decrease in viscosity, etc., improving the plasticity and ductility of rubber, and improving the processing performance, such as the processes of calendering and extrusion are smoother, which helps to improve production efficiency, reduce production costs, and at the same time is conducive to improving the tensile strength and wear resistance, making the rubber have anti-aging properties.

[0004] Rubber seeds are the kernels of rubber trees in the Euphorbiaceae family. Rubber seed oil extracted from rubber seeds can be used to prepare rubber softeners. Rubber seed oil has good compatibility and affinity with rubber, can reduce the power consumption during mixing, and promote the uniform dispersion of auxiliary materials; for the rubber compound added with rubber seed oil, the process properties such as the elongation at break and resilience of its vulcanized rubber are improved; an appropriate amount of rubber seed oil can soften the rubber compound, so that the surface of the extruded semi-finished product is smooth, the extrusion expansion is small, and the extrusion speed is fast. However, when rubber seed oil is extracted now, since rubber seed shells are mixed in the rubber seed kernels when the rubber seeds are shelled, the finally extracted rubber seed oil is not pure, resulting in a decrease in the quality of the rubber when preparing rubber, and the rubber cannot obtain good anti-aging properties. Summary of the Invention

[0005] The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single. Specifically, the present invention mainly provides a preparation process for anti-aging rubber used for conveyor belts to solve the technical problems raised in the above background art.

[0006] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0007] A preparation process of anti-aging rubber for conveyor belts, comprising:

[0008] S1. Drying: Drying rubber seeds so that their moisture content reaches 5% - 15%;

[0009] S2. Shelling: Screening the dried rubber seeds by multiple sieves according to size, and then sequentially feeding the screened rubber seeds into a shelling machine to obtain rubber seed kernels and rubber seed husks;

[0010] S3. Pressing: Heating the rubber seed kernels to 30°C - 120°C and then feeding them into a press to obtain crude oil and rubber seed cakes. After collecting the crude oil, it is refined to obtain rubber seed oil;

[0011] S4. Leaching: Expanding the rubber seed cakes at 80°C - 180°C to obtain expanded cakes, and then leaching the expanded cakes to obtain a mixed oil;

[0012] S5. Desolventizing: After the mixed oil is evaporated and desolventized under vacuum conditions, rubber seed oil is obtained.

[0013] A shelling machine applicable to the preparation process of the anti-aging rubber for conveyor belts described above, comprising a machine case. A shell-breaking mechanism and a winnowing mechanism are respectively arranged above and below the machine case. The shell-breaking mechanism includes an electric component, a lower pressing plate frame and a conveying component;

[0014] Wherein, a top plate is installed at the lower end of the electric component. A number of first hydraulic rods are connected between the top plate and the lower pressing plate frame. A cavity is arranged inside the lower pressing plate frame. A control pressing plate installed in a sliding manner and a struck plate installed fixedly are arranged inside the cavity. The control pressing plate and the struck plate are slidably connected. A number of extrusion springs are connected between the struck plate and the control pressing plate. A photoelectric sensor is arranged at the bottom of the cavity. A second hydraulic rod is connected between the top plate and the struck plate. All the first hydraulic rods are communicated with the second hydraulic rod through hoses, and an initial electromagnetic valve is arranged on the hose;

[0015] A drive box is installed on the control pressing plate. A double-shaft motor, a driving gear and a half gear meshing with each other are arranged inside the drive box. The half gear is installed at the output end of the double-shaft motor. A rotating block is rotatably installed outside the drive box. The driving gear and the half gear are axially connected. A third hydraulic rod is installed on one side of the rotating block, and a striking ball is installed at the other end of the third hydraulic rod;

[0016] A follower box is installed on the upper end of the top plate through a bracket, and a first cavity and a second cavity are provided at the lower end inside the follower box, and the first cavity and the second cavity are both filled with oil. The first cavity and the second cavity are both connected to a final solenoid valve, and the other end of the final solenoid valve connected to the first cavity is connected to a plurality of first oil rods through a hose, and another of the final solenoid valves is connected to a second oil rod through a hose.

[0017] Preferably, the chassis has a built-in central control, and the electric component consists of an electric guide rail and an electric push rod installed on the electric guide rail.

[0018] Preferably, a limit block for limiting the rotation block is provided on the side wall of the driving box, and a contraction spring is built into the third oil rod.

[0019] Preferably, pistons are sliding inside the first cavity and the second cavity, wherein a counterweight is installed on the upper end of the piston sliding inside the first cavity, a rack is installed on the counterweight, the rack is meshed with a follower gear rotatably installed inside the follower box, and the other piston is provided with a first threaded sleeve screw that is threadedly connected to each other, and the follower gear is connected through a threaded sleeve transmission of a bevel gear and the first threaded sleeve screw that meshes with each other.

[0020] Preferably, a third cavity is arranged above the second cavity, and a top plug and a bottom plug are respectively slidably arranged at the upper and lower ends inside the third cavity, the bottom plug is connected to one of the pistons through a connecting rod, the space between the top plug and the bottom plug is filled with oil, the top plug is provided with a second screw sleeve screw which is threadedly connected to each other, a rotating disk is arranged inside the follower box, the rotating disk is transmission connected to the output end of the dual-axis motor through a sprocket chain, and the rotating disk is transmission connected to the screw sleeve of the second screw sleeve screw through mutually meshing gears and mutually meshing bevel gears.

[0021] Preferably, the conveying assembly is composed of a motor, a conveyor belt and a conveyor frame, a fixed plate is arranged inside the conveyor belt, and a laser sensor facing the fixed plate is arranged on the inner wall of the chassis.

[0022] Preferably, a feed port and a discharge port are respectively provided at both ends of the conveying component, a guide plate and a smoothing roller are provided at the feed port, and a discharge inclined plate is provided at the discharge port.

[0023] Preferably, the air selection mechanism includes a fan and a filter.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) This process avoids the phenomenon that rubber, resin, gum and other substances in the rubber seed cake are extracted and clog the screen plate in the pre-pressing and leaching process, reduces the residual oil in the cake and improves the oil yield of rubber seeds.

[0026] (2) When the present process is used to shell rubber seeds, if the outer shell of the rubber seeds is relatively hard and the knocking force cannot break the rubber seed shell, the knocking force is gradually increased until it is sufficient to crush the outer shell of the rubber seeds. The gradual increase in the knocking force avoids excessive downward pressure, which may damage the rubber seed kernels. The liquid flowing out may adhere the rubber seed shells to the rubber seed kernels, resulting in rubber seed kernels containing rubber seed shells in the final product. This makes the extracted rubber seed oil impure, and when preparing rubber, the quality of the rubber decreases and the rubber cannot obtain good anti-aging performance. At the same time, after knocking and crushing, the lower platen frame can move downward, and the piston drives the bottom plug to move downward, increasing the space between the top plug and the bottom plug. The oil in the third oil rod returns to the third cavity, and the third oil rod is restored, ensuring that the knocking force on the next rubber seed also gradually increases from small to large.

[0027] (3) When the present process is used to shell rubber seeds, the electric guide rail in the electric component is started, and the electric guide rail drives the lower platen frame to move back and forth. Since the rubber seeds are squeezed by the lower platen frame, the rubber seeds also roll continuously. At the same time, the double-shaft motor makes the half gear rotate. The half gear first drives the driving gear to rotate, causing the rotating block to drive the third oil rod to rotate. Then the half gear and the driving gear separate, and the third oil rod falls back. The striking ball hits the struck plate, continuously applying a high-frequency knock on the rubber seeds. By circumferentially knocking the outer shell of the rubber seeds, the crushing of the rubber seed shell is achieved, and the shelling is more comprehensive, ensuring effective shelling.

[0028] (4) When the present process is used to shell rubber seeds, the relatively thick rubber seed shells between the lower platen frame and the fixed plate break, and the lower platen frame has no contact. Under the push of the compression spring, the lower platen frame comes into contact with the rubber seeds of the next smaller thickness level. Since the first oil rod elongates as the lower platen frame moves downward, the internal space of the first oil rod becomes larger, and the oil in the first cavity enters the first oil rod. The counterweight drives the rack to move downward, and the downward movement of the rack causes the follower gear to rotate. The follower gear drives the sleeve of the first screw rod to rotate, and the screw of the first screw rod pushes the piston in the second cavity downward, causing the oil in the second cavity to enter the second oil rod, making the second oil rod also elongate accordingly. Thus, the degree of contraction of the compression spring remains unchanged, ensuring that each rubber seed is always under a relatively small downward pressure, avoiding excessive downward pressure, which may damage the rubber seed kernels. The liquid flowing out may adhere the rubber seed shells to the rubber seed kernels, resulting in rubber seed kernels containing rubber seed shells in the final product. This makes the extracted rubber seed oil impure, and when preparing rubber, the quality of the rubber decreases and the rubber cannot obtain good anti-aging performance.

[0029] The present invention will be explained in detail below in combination with the accompanying drawings and specific embodiments. Description of the Drawings

[0030] Figure 1 Schematic diagram of the internal structure of the chassis of the present invention;

[0031] Figure 2 Schematic diagram of the partial structure of the shell-breaking mechanism of the present invention;

[0032] Figure 3 Schematic diagram of the connection of the first hydraulic rod, the second hydraulic rod and the third hydraulic rod of the present invention;

[0033] Figure 4 Schematic diagram of the internal structure of the follower box of the present invention;

[0034] Figure 5 Schematic diagram of the internal structure of the drive box of the present invention.

[0035] In the figure:

[0036] 1. Chassis;

[0037] 10. Electric component; 101. Top plate; 102. First hydraulic rod; 103. Second hydraulic rod; 104. Initial solenoid valve;

[0038] 20. Lower pressure plate frame; 201. Control pressure plate; 202. Impact receiving plate; 203. Extrusion spring; 204. Photoelectric sensor;

[0039] 30. Drive box; 301. Biaxial motor; 302. Drive gear; 303. Half gear; 304. Rotating block; 305. Third hydraulic rod; 306. Impact ball; 307. Limit block;

[0040] 40. Conveyor component; 401. Fixed plate; 402. Guide plate; 403. Smoothing roller; 404. Feeding inclined plate.

[0041] 50. Follower box; 501. First cavity; 502. Second cavity; 503. Third cavity; 504. Counterweight; 505. Rack; 506. Follower gear; 507. First screw sleeve and screw; 508. Top plug; 509. Bottom plug; 510. Second screw sleeve and screw; 511. Rotating disk; 512. Final solenoid valve; 513. Piston;

[0042] 2. Central control. Detailed implementation manners

[0043] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, providing these embodiments is to make the disclosed content of the present invention more thorough and comprehensive.

[0044] It should be noted that when an element is referred to as "fixed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can 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 in this article are only for the purpose of illustration.

[0045] Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention in this article are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more of the related listed items.

[0046] A preparation process for anti-aging rubber for conveyor belts, comprising:

[0047] S1. Drying: Drying rubber seeds so that their moisture content reaches 5% - 15%;

[0048] S2. Shelling: Screening the dried rubber seeds by multiple sieves according to size, and then sequentially feeding the screened rubber seeds into a shelling machine to obtain rubber seed kernels and rubber seed shells;

[0049] S3. Pressing: Heating the rubber seed kernels to 30°C - 120°C and then feeding them into a press to obtain crude oil and rubber seed cakes. After collecting the crude oil, it is refined to obtain rubber seed oil;

[0050] S4. Extraction: Expanding the rubber seed cakes at 80°C - 180°C to obtain expanded cakes, and then extracting the expanded cakes to obtain a mixed oil;

[0051] S5. Desolventizing: After the mixed oil is evaporated and desolventized under vacuum conditions, rubber seed oil is obtained.

[0052] Please refer to the appendix Figure 1 , A shelling machine applicable to the above-mentioned preparation process for anti-aging rubber for conveyor belts, comprising a machine case 1, and a central control 2 is built inside the machine case 1. By setting the central control 2, it is convenient to control the electrical components inside the shelling machine. The control circuit of the central control 2 can be realized by simple programming by those skilled in the art and belongs to the common knowledge in the art. Only its use is described without modification, so the control method and circuit connection will not be described in detail.

[0053] Please refer to the appendix Figure 1, a casing 1 is respectively provided with a shell-breaking mechanism and a winnowing mechanism above and below. The shell-breaking mechanism includes an electric component 10, a lower pressing plate frame 20, and a conveying component 40. The winnowing mechanism includes a blower and a filter screen. Separating rubber kernels and rubber seed husks by wind power is an existing mature technology, so it will not be elaborated here. The conveying component 40 is composed of a motor, a conveyor belt, and a conveying frame. Conveying materials by the conveyor belt is an existing mature technology, so it will not be elaborated here. A fixing plate 401 is arranged inside the conveyor belt. The fixing plate 401 is used to support the conveyor belt to prevent the conveyor belt from being unable to provide strong and effective support for rubber seeds when the lower pressing plate frame 20 presses down, resulting in the failure of rubber seed shelling. Feed inlets and discharge outlets are respectively arranged at both ends of the conveying component 40. A guiding plate 402 and a smoothing roller 403 are arranged at the feed inlet, and a discharge inclined plate 404 is arranged at the discharge outlet. The smoothing roller 403 can ensure that there is no stacking of rubber seeds between the fixing plate 401 and the lower pressing plate frame 20.

[0054] Please refer specifically to the attached Figure 1 - Figure 3 , the electric component 10 is composed of an electric guide rail and an electric push rod installed on the electric guide rail. A top plate 101 is installed at the lower end of the electric component 10. A plurality of first hydraulic rods 102 are connected between the top plate 101 and the lower pressing plate frame 20. A cavity is arranged inside the lower pressing plate frame 20. A control pressing plate 201 slidably installed and a struck plate 202 fixedly installed are arranged inside the cavity. The control pressing plate 201 and the struck plate 202 are slidably connected. A plurality of compression springs 203 are connected between the struck plate 202 and the control pressing plate 201. A photoelectric sensor 204 is arranged at the bottom of the cavity. A second hydraulic rod 103 is connected between the top plate 101 and the struck plate 202. All the plurality of first hydraulic rods 102 are communicated with the second hydraulic rod 103 through hoses, and a primary solenoid valve 104 is arranged on the hose;

[0055] Initially, the primary solenoid valve 104 is in an open state. The electric push rod in the electric component 10 is started, so that the lower pressing plate frame 20 continuously moves downward until the lower pressing plate frame 20 presses on the rubber seeds. The lower pressing plate frame 20 receives a reaction force, causing the first hydraulic rod 102 to contract. The oil liquid inside the first hydraulic rod 102 is squeezed into the second hydraulic rod 103, causing the second hydraulic rod 103 to elongate. Since the lower pressing plate frame 20 cannot move, the control pressing plate 201 will move downward, squeezing the compression spring 203. When the photoelectric sensor 204 detects that the control pressing plate 201 has moved downward to a certain position, the electric push rod in the electric component 10 stops moving downward, and at the same time the primary solenoid valve 104 is closed; so that the pressure received by the rubber seeds continuously increases and stops when it reaches a relatively small degree.

[0056] Please refer specifically to the attached Figure 1 - Figure 5, a drive box 30 is installed on the control pressing plate 201. A dual-shaft motor 301, a driving gear 302 and a half gear 303 that mesh with each other are arranged inside the drive box 30. The half gear 303 is installed at the output end of the dual-shaft motor 301. A rotating block 304 is rotatably installed outside the drive box 30. The rotating block 304 and the driving gear 302 are axially connected. A third hydraulic rod 305 is installed on one side of the rotating block 304. The other end of the third hydraulic rod 305 is installed with a striking ball 306; a limiting block 307 for limiting the rotating block 304 is arranged on the side wall of the drive box 30, and a compression spring is built in the third hydraulic rod 305.

[0057] The limiting block 307 can prevent the third hydraulic rod 305 from rotating too much, resulting in the third hydraulic rod 305 being unable to contact the struck plate 202; since a compression spring is built in the third hydraulic rod 305, the third hydraulic rod 305 is in a contracted state in the initial state. After the rubber seed shelling is completed, the compression spring can re-squeeze the oil inside the third hydraulic rod 305 into the third cavity 503. The dual-shaft motor 301 is started, causing the half gear 303 to rotate. The half gear 303 first drives the driving gear 302 to rotate, causing the rotating block 304 to drive the third hydraulic rod 305 to rotate. Then the half gear 303 and the driving gear 302 are separated, and the third hydraulic rod 305 falls back. The striking ball 306 strikes the struck plate 202, continuously applying high-frequency knocking to the rubber seeds. As the third hydraulic rod 305 extends, the height of each rise of the striking ball 306 also increases, and the falling impact force also becomes larger, realizing an increase in the knocking force on the rubber seeds.

[0058] Please refer specifically to the attached Figure 1 - Figure 5A follower box 50 is installed on the upper end of the top plate 101 through a bracket, and a first cavity 501 and a second cavity 502 are provided at the lower end inside the follower box 50, and the first cavity 501 and the second cavity 502 are both filled with oil, and the first cavity 501 and the second cavity 502 are both connected to a final solenoid valve 512, and the other end of the final solenoid valve 512 connected to the first cavity 501 is connected to a plurality of first oil rods 102 through a hose, and another of the final solenoid valves 512 is connected to a second oil rod 103 through a hose. A piston 513 is slidably mounted inside the first cavity 501 and the second cavity 502, wherein a counterweight 504 is mounted on the upper end of the piston 513 slidably mounted inside the first cavity 501, a rack 505 is mounted on the counterweight 504, the rack 505 is meshed with a follower gear 506 rotatably mounted inside the follower box 50, and a first threaded sleeve screw 507 threadedly connected to each other is provided on the other piston 513, and the follower gear 506 is connected to the first threaded sleeve screw 507 through a threaded sleeve transmission of a bevel gear meshing with each other. A third cavity 503 is arranged above the second cavity 502, and a top plug 508 and a bottom plug 509 are respectively slidably arranged at the upper and lower ends inside the third cavity 503, and the bottom plug 509 is connected to one of the pistons 513 through a connecting rod, and the space between the top plug 508 and the bottom plug 509 is filled with oil, and the top plug 508 is provided with a second threaded sleeve screw 510 that is threadedly connected to each other, and a rotating disk 511 is arranged inside the follower box 50, and the rotating disk 511 is transmission-connected to the output end of the dual-axis motor 301 through a sprocket chain, and the rotating disk 511 is transmission-connected to the thread sleeve of the second threaded sleeve screw 510 through mutually meshing gears and mutually meshing bevel gears, and a laser sensor facing the fixed plate 401 is provided on the inner wall of the chassis 1.

[0059] When the electric push rod in the electric component 10 stops moving downward and the initial solenoid valve 104 closes, the final solenoid valve 512 changes from the closed state to the open state. With the knocking on the rubber seeds, the rubber seed shell with the largest thickness breaks. The lower pressing plate frame 20 has no contact. Under the push of the compression spring 203, the lower pressing plate frame 20 contacts the rubber seeds with a smaller thickness again. Since the first hydraulic rod 102 elongates as the lower pressing plate frame 20 moves downward, the internal space of the first hydraulic rod 102 becomes larger, and the hydraulic oil inside the first cavity 501 will enter the first hydraulic rod 102. The counterweight 504 drives the rack 505 to move downward. The downward movement of the rack 505 causes the follower gear 506 to rotate. The follower gear 506 drives the sleeve of the first screw sleeve rod 507 to rotate, and the screw of the first screw sleeve rod 507 pushes the piston 513 inside the second cavity 502 to move downward, so that the hydraulic oil inside the second cavity 502 enters the second hydraulic rod 103, causing the second hydraulic rod 103 to elongate accordingly. As a result, the contraction degree of the compression spring 203 does not change, ensuring that each rubber seed is always under a relatively small downward pressure, avoiding excessive downward pressure that may damage the rubber seed kernel. The liquid flowing out adheres the rubber seed shell to the rubber seed kernel, resulting in the rubber seed kernel obtained finally containing the rubber seed shell, making the extracted rubber seed oil impure, reducing the quality of the rubber during rubber preparation, and the rubber unable to obtain good anti-aging performance. When the shell of the rubber seed is hard, the knocking force cannot break the rubber seed shell. As time goes by, the dual-axis motor 301 drives the rotating disk 511 to rotate through the sprocket chain. The rotating disk 511 drives the sleeve of the second screw sleeve rod 510 to rotate through the meshing gears and the meshing bevel gears, so that the screw of the second screw sleeve rod 510 pushes the top plug 508 to move downward. Since the shell of the rubber seed is not crushed and the lower pressing plate frame 20 does not move, the hydraulic oil in the first cavity 501 and the second cavity 502 does not change, and the bottom plug 509 does not move with the piston 513. As the top plug 508 moves downward continuously, the hydraulic oil inside the third cavity 503 is squeezed into the third hydraulic rod 305, causing the third hydraulic rod 305 to elongate, increasing the knocking force until the knocking force is sufficient to crush the rubber seed shell. The knocking force gradually increases, avoiding excessive downward pressure that may damage the rubber seed kernel. The liquid flowing out adheres the rubber seed shell to the rubber seed kernel, resulting in the rubber seed kernel obtained finally containing the rubber seed shell, making the extracted rubber seed oil impure, reducing the quality of the rubber during rubber preparation, and the rubber unable to obtain good anti-aging performance. At the same time, after knocking and crushing, the lower pressing plate frame 20 can move downward. The piston 513 drives the bottom plug 509 to move downward, increasing the space between the top plug 508 and the bottom plug 509. The hydraulic oil inside the third hydraulic rod 305 returns to the third cavity 503 again, and the third hydraulic rod 305 is restored, ensuring that the knocking force received by the next rubber seed also gradually increases from small to large.

[0060] Specific operation steps:

[0061] Pour the rubber seeds of the same batch onto the material guide plate 402. The rubber seeds continuously fall onto the conveying assembly 40. Then start the conveying assembly 40. The conveying assembly 40 drives the rubber seeds to move and is leveled by the leveling roller 403, so that the rubber seeds are laid flat between the fixing plate 401 and the lower pressing plate frame 20. Then stop the conveying assembly 40;

[0062] The electric push rod in the electric assembly 10 starts, so that the lower pressing plate frame 20 continuously moves downward until the lower pressing plate frame 20 presses on the rubber seeds. The lower pressing plate frame 20 receives a reaction force, causing the first hydraulic rod 102 to contract. The hydraulic oil inside the first hydraulic rod 102 is squeezed into the second hydraulic rod 103, causing the second hydraulic rod 103 to extend. Since the lower pressing plate frame 20 cannot move, the control pressing plate 201 will move downward, squeezing the compression spring 203. When the photoelectric sensor 204 detects that the control pressing plate 201 has moved downward to a certain position, the electric push rod in the electric assembly 10 stops moving downward. At the same time, the initial solenoid valve 104 closes, so that the pressure on the rubber seeds continuously increases and stops when it reaches a relatively small level;

[0063] When the initial solenoid valve 104 closes, the final solenoid valve 512 changes from the closed state to the open state. The double-shaft motor 301 starts, and the electric guide rail in the electric assembly 10 starts. The electric guide rail drives the lower pressing plate frame 20 to move back and forth. Since the rubber seeds are squeezed by the lower pressing plate frame 20, the rubber seeds also continuously roll. At the same time, the double-shaft motor 301 causes the half gear 303 to rotate. The half gear 303 first drives the driving gear 302 to rotate, so that the rotating block 304 drives the third hydraulic rod 305 to rotate. Then the half gear 303 and the driving gear 302 separate, and the third hydraulic rod 305 drops, and the striking ball 306 strikes the struck plate 202, continuously applying high-frequency knocking to the rubber seeds. By knocking around the outer shell of the rubber seeds, the crushing of the rubber seed shell is realized;

[0064] The thick rubber seed husks break, and the lower pressing plate frame 20 has no contact. Under the push of the extrusion spring 203, the lower pressing plate frame 20 comes into contact with the rubber seeds of the next smaller thickness level again. Since the first hydraulic rod 102 elongates as the lower pressing plate frame 20 moves downward, the internal space of the first hydraulic rod 102 becomes larger, and the hydraulic fluid inside the first cavity 501 will enter the first hydraulic rod 102. The counterweight 504 drives the rack 505 to move downward. The downward movement of the rack 505 causes the follower gear 506 to rotate. The follower gear 506 drives the sleeve of the first screw sleeve rod 507 to rotate, and the screw of the first screw sleeve rod 507 pushes the piston 513 inside the second cavity 502 to move downward, causing the hydraulic fluid inside the second cavity 502 to enter the second hydraulic rod 103, making the second hydraulic rod 103 also elongate accordingly. As a result, the degree of contraction of the extrusion spring 203 remains unchanged, ensuring that each rubber seed is always under a relatively small downward pressure, avoiding excessive downward pressure that may damage the rubber seed kernels. The outflowing liquid adheres the rubber seed husks to the rubber seed kernels, resulting in the final rubber seed kernels containing rubber seed husks, making the extracted rubber seed oil impure, reducing the quality of the rubber during rubber preparation, and the rubber not being able to obtain good anti-aging performance;

[0065] If the outer husk of the rubber seeds is hard, the knocking force cannot break the rubber seed husks. As time goes by, the dual-axis motor 301 drives the rotating disk 511 to rotate through the sprocket chain. The rotating disk 511 drives the sleeve of the second screw sleeve rod 510 to rotate through the meshing gears and the meshing bevel gears, causing the screw of the second screw sleeve rod 510 to push the top plug 508 downward. Since the outer husk of the rubber seeds is not crushed and the lower pressing plate frame 20 does not move, the hydraulic fluid in the first cavity 501 and the second cavity 502 does not change, and the bottom plug 509 does not move with the piston 513. As the top plug 508 moves downward continuously, the hydraulic fluid inside the third cavity 503 is squeezed into the third hydraulic rod 305, making the third hydraulic rod 305 elongate, increasing the knocking force until the knocking force is sufficient to crush the outer husk of the rubber seeds. The knocking force gradually increases, avoiding excessive downward pressure that may damage the rubber seed kernels. The outflowing liquid adheres the rubber seed husks to the rubber seed kernels, resulting in the final rubber seed kernels containing rubber seed husks, making the extracted rubber seed oil impure, reducing the quality of the rubber during rubber preparation, and the rubber not being able to obtain good anti-aging performance; At the same time, after knocking and crushing, the lower pressing plate frame 20 can move downward, and the piston 513 drives the bottom plug 509 to move downward, making the space between the top plug 508 and the bottom plug 509 larger. The hydraulic fluid inside the third hydraulic rod 305 returns to the third cavity 503 again, and the third hydraulic rod 305 is restored, ensuring that the knocking force received by the next rubber seed also starts from small and gradually increases;

[0066] When the laser sensor detects that the distance between the lower pressing plate frame 20 and the fixed plate 401 reaches a certain extent, the electric push rod in the electric component 10 is activated, causing the lower pressing plate frame 20 to move upward. At the same time, the conveying component 40 is activated, and the conveying component 40 drives the rubber kernels and rubber seed husks to move and fall into the air separation mechanism, where the rubber kernels and rubber seed husks are separated by the fan and the filter screen.

[0067] The above has described the present invention exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A preparation process of anti-aging rubber for conveyor belts, characterized in that, Including: S1. Drying: Dry the rubber seeds so that their moisture content reaches 5% - 15%; S2. Shelling: Size-screen the dried rubber seeds through multiple sieves, and then sequentially feed the screened rubber seeds into a shelling machine to obtain rubber seed kernels and rubber seed husks; S3. Pressing: Heat the rubber seed kernels to 30°C - 120°C and then feed them into a press to obtain crude oil and rubber seed cakes. The crude oil is collected and refined to obtain rubber seed oil; S4. Extraction: Expand the rubber seed cakes at 80°C - 180°C to obtain expanded cakes, and then extract the expanded cakes to obtain mixed oil; S5. Desolventizing: After the mixed oil is evaporated and desolventized under vacuum conditions, rubber seed oil is obtained; The shelling machine includes a machine case (1), characterized in that: a shell-breaking mechanism and a winnowing mechanism are respectively arranged above and below the machine case (1), and the shell-breaking mechanism includes an electric component (10), a lower pressing plate frame (20), and a conveying component (40); Among them, a top plate (101) is installed at the lower end of the electric component (10), and a number of first hydraulic rods (102) are connected between the top plate (101) and the lower pressing plate frame (20). A cavity is arranged inside the lower pressing plate frame (20), and a control pressing plate (201) installed in a sliding manner and a struck plate (202) installed fixedly are arranged inside the cavity. The control pressing plate (201) and the struck plate (202) are slidably connected, and a number of extrusion springs (203) are connected between the struck plate (202) and the control pressing plate (201). A photoelectric sensor (204) is arranged at the bottom of the cavity, and a second hydraulic rod (103) is connected between the top plate (101) and the struck plate (202). All the first hydraulic rods (102) are communicated with the second hydraulic rod (103) through hoses, and a primary solenoid valve (104) is arranged on the hose; A driving box (30) is installed on the control pressing plate (201). A double-shaft motor (301), a driving gear (302) and a half gear (303) that mesh with each other are arranged inside the driving box (30). The half gear (303) is installed at the output end of the double-shaft motor (301). A rotating block (304) is rotatably installed outside the driving box (30). The driving gear (302) and the half gear (303) are axially connected. A third hydraulic rod (305) is installed on one side of the rotating block (304), and a striking ball (306) is installed at the other end of the third hydraulic rod (305); A follower box (50) is installed at the upper end of the top plate (101) through a bracket. A first cavity (501) and a second cavity (502) are arranged at the lower end inside the follower box (50), and both the first cavity (501) and the second cavity (502) are filled with oil. Final solenoid valves (512) are connected to both the first cavity (501) and the second cavity (502). The other end of the final solenoid valve (512) communicated with the first cavity (501) is communicated with a number of first hydraulic rods (102) through a hose, and the other final solenoid valve (512) is communicated with the second hydraulic rod (103) through a hose.

2. The preparation process of an anti-aging rubber for a conveyor belt according to claim 1, characterized in that: The chassis (1) has a built-in central control (2), and the electric component (10) is composed of an electric guide rail and an electric push rod installed on the electric guide rail.

3. The preparation process of an anti-aging rubber for a conveyor belt according to claim 2, characterized in that: A limiting block (307) for limiting the position of the rotating block (304) is arranged on the side wall of the driving box (30), and a contraction spring is built into the third oil rod (305).

4. A preparation process of anti-aging rubber for a conveyor belt according to claim 3, characterized in that: A piston (513) is slidably mounted inside the first cavity (501) and the second cavity (502), wherein a counterweight (504) is mounted on the upper end of the piston (513) slidably mounted inside the first cavity (501), wherein a rack (505) is mounted on the counterweight (504), wherein the rack (505) meshes with a follower gear (506) rotatably mounted inside the follower box (50), and a first screw sleeve screw (507) threadably connected to each other is disposed on the other piston (513), wherein the follower gear (506) is connected to the first screw sleeve screw (507) through a screw sleeve transmission of a bevel gear meshing with each other.

5. A preparation process of anti-aging rubber for a conveyor belt according to claim 4, characterized in that: A third cavity (503) is arranged above the second cavity (502), and a top plug (508) and a bottom plug (509) are slidably arranged at the upper and lower ends of the third cavity (503), respectively; the bottom plug (509) is connected to one of the pistons (513) via a connecting rod; oil is filled between the top plug (508) and the bottom plug (509); the top plug (508) is provided with a second screw sleeve screw (510) which is threadedly connected to each other; a rotating disk (511) is arranged inside the follower case (50), and the rotating disk (511) is transmission-connected to the output end of the dual-axis motor (301) via a sprocket chain; the rotating disk (511) is transmission-connected to the screw sleeve of the second screw sleeve screw (510) via mutually meshing gears and mutually meshing bevel gears.

6. The preparation process of an anti-aging rubber for a conveyor belt according to claim 5, characterized in that: The conveying assembly (40) is composed of a motor, a conveying belt and a conveying frame; a fixing plate (401) is arranged inside the conveying belt; and a laser sensor facing the fixing plate (401) is arranged on the inner side wall of the chassis (1).

7. A preparation process of anti-aging rubber for a conveyor belt according to claim 6, characterized in that: The conveying assembly (40) is provided with a feed inlet and a feed outlet at both ends, respectively; a guide plate (402) and a smoothing roller (403) are provided at the feed inlet, and a feed outlet inclined plate (404) is provided at the feed outlet.

8. A preparation process of anti-aging rubber for conveyor belts according to claim 7, characterized in that: The wind selection mechanism comprises a fan and a filter.

Images