Steel cord core high temperature resistant conveyor belt and preparation method thereof

Abstract

The present application relates to rubber composite and heavy conveying equipment manufacturing technology field, and disclose a kind of steel cord core high temperature resistant conveyor belt and preparation method thereof, and the formula of raw material as follows by weight:EPDM 20-33 parts of ethylene-propylene rubber, butyl rubber 10-20 parts, chlorosulfonated polyethylene 5-7 parts, special adhesive butadiene rubber 3-6 parts, magnesium oxide 5-7 parts, high temperature resistant antioxidant 12-15 parts, peroxide vulcanizing agent 15-18 parts, silane coupling agent 10-12 parts, high reinforcing white carbon black 8-13 parts, heat-resistant flame-retardant filler 8-10 parts.Setting distribution mechanism, relying on telescopic arm and conveyor belt cooperate fixed point blank, raw material placement position is uniform controllable, avoid a variety of raw materials instantaneous mixed clump, improve filler agglomeration problem from the source.Gum material internal material dispersion consistency is greatly improved, shorten the length of time of mother rubber after rubber constant temperature curing, reduce the difference of rubber quality caused by feeding disorder, guarantee the subsequent made conveyor belt covering rubber heat-resistant, bonding performance stable and uniform.

Description

Technical Field

[0001] This invention relates to the field of rubber composite materials and heavy-duty conveying equipment manufacturing technology, specifically to a high-temperature resistant steel wire rope core conveyor belt and its preparation method. Background Technology

[0002] High-temperature resistant steel cord conveyor belts are special conveying equipment made of galvanized high-strength steel cord as the longitudinal load-bearing skeleton, high-temperature resistant special rubber as the core rubber, and composite vulcanized with upper and lower cover rubber and edge rubber. Based on ordinary steel cord conveyor belts, the rubber formula is optimized and it is specially used for conveying high-temperature materials such as high-temperature clinker, steel slag, coke, sinter, and high-temperature ore. According to national standards, the heat resistance grades are divided into four temperature resistance levels: T1 (≤100℃), T2 (≤125℃), T3 (≤150℃), and T4 (≤175℃). The short-term peak temperature can withstand an instantaneous high temperature of about 200℃.

[0003] Patent application CN202310999750.3 discloses a heat-resistant and tear-resistant steel wire rope mesh conveyor belt and its manufacturing method. The steel wire rope mesh conveyor belt comprises, from top to bottom, an upper cover layer, a rigid layer, a core rubber layer, a heat-resistant layer, and a lower cover layer; the upper cover layer, core rubber layer, and lower cover layer are all made of heat-resistant polyester; the rigid layer is made of stainless steel, and the heat-resistant layer is made of EP fabric; the core rubber layer contains embedded steel wire rope mesh; the manufacturing steps include fabricating the steel wire rope mesh, fabricating the conveyor belt, peeling and shearing, grinding and cleaning, jointing, and vulcanizing the bonded joint.

[0004] However, this patent also has the following shortcomings: traditional internal mixers use a batch feeding method for all kinds of raw materials at once. Powdered fillers are prone to agglomeration when they come into contact with oil. It is difficult to achieve uniform dispersion of fillers by relying solely on the shearing of the internal mixer rotor. Furthermore, the inner wall of the internal mixer cylinder is prone to the adhesion of scorched rubber residue, solidified lumps, and wall-mounted powder. Before each change of rubber production, it is necessary to stop the machine, disassemble it, and manually clean the cavity. Residual old rubber will also mix into the interior of the newly mixed rubber, forming hard impurity particles. At the same time, the high-reinforcing silica and heat-resistant flame-retardant fillers used in large quantities in the formula are prone to agglomeration during storage and transportation. It is difficult to completely break up large lumps by relying solely on the shearing ability of the internal mixer rotor itself. In response to this situation, a high-temperature resistant conveyor belt with steel wire rope core and its preparation method are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a high-temperature resistant conveyor belt with a steel wire rope core and a method for preparing the same, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a formula for a high-temperature resistant conveyor belt with steel wire rope core, wherein the raw materials are formulated by weight as follows: 20-33 parts of EPDM raw rubber, 10-20 parts of butyl rubber, 5-7 parts of chlorosulfonated polyethylene, 3-6 parts of styrene-butadiene rubber for bonding, 5-7 parts of magnesium oxide, 12-15 parts of high-temperature resistant antioxidant, 15-18 parts of peroxide vulcanizing agent, 10-12 parts of silane coupling agent, 8-13 parts of high-reinforcing silica, and 8-10 parts of heat-resistant and flame-retardant filler.

[0007] A method for preparing a high-temperature resistant conveyor belt with a steel wire rope core includes the following steps: S1: For rubber raw materials such as EPDM, butyl rubber, chlorosulfonated polyethylene, and styrene-butadiene rubber for adhesives, check the Mooney viscosity and heat resistance index.

[0008] S2: The physical and chemical properties of the rubber raw materials magnesium oxide, high-temperature antioxidants, peroxide vulcanizing agents, silane coupling agents, high-reinforcing silica, and heat-resistant and flame-retardant fillers are sampled and tested according to their formulations.

[0009] S3: Select hot-dip galvanized high-carbon steel wire rope as raw material. Randomly inspect the tensile strength of single wires, the thickness of the galvanized layer, and the elongation. Remove rusted, kinked, or peeling steel wire ropes.

[0010] S4: Conduct incoming inspection of auxiliary materials such as release film, heat-resistant adhesive, edge reinforcing strips, and repair adhesive.

[0011] S5: Add EPDM raw rubber, heat-resistant reinforcing filler, antioxidant, softening oil, and adhesive additive to the internal mixer in sequence, without adding vulcanizing agent.

[0012] According to the above technical solution, a pad is fixedly connected to the bottom of the internal mixer, a guide tank is fixedly connected to the top of the internal mixer, a discharge valve is fixedly connected to the inner wall of the internal mixer, and a distribution mechanism is provided at the top of the inner wall of the internal mixer. The distribution mechanism includes: The mixing chamber is fixedly connected to the top of the inner wall of the mixing machine. A distribution ring is fixedly connected to the bottom of the mixing chamber. A transfer arm is fixedly connected to the surface of the mixing chamber. A feeding component is provided at the end of the transfer arm away from the mixing chamber. By activating the intelligent transfer pump inside the distribution ring, raw materials such as raw rubber are automatically transported through the mixing chamber into the storage chambers inside multiple transfer arms. The feeding assembly includes: The mounting box is fixedly connected to one end of the transmission arm. Transmission rings are fixedly connected to both sides of the mounting box. A conveyor belt is fixedly connected to the surface of the transmission rings. The telescopic arm drives the clamping seat to extend and retract outward into the interior of the internal mixer.

[0013] According to the above technical solution, the feeding assembly further includes a telescopic arm, one end of which is fixedly connected to the inner wall of the mounting box, and a clamping seat is fixedly connected to the end of the telescopic arm away from the mounting box. The end of the conveyor belt away from the transmission ring is fixedly connected to both sides of the clamping seat. A pushing pad is rotatably connected to the inner wall of the clamping seat, and a discharge pad is fixedly connected to the inner wall of the pushing pad. An installation plate is fixedly connected to the bottom of the inner wall of the internal mixer, and a pushing mechanism is provided on the top of the installation plate. The mounting box controller will drive the pushing pad on the inner wall of the clamping seat to rotate.

[0014] According to the above technical solution, the pushing mechanism includes a pushing arm, one end of which is rotatably connected to the top of the mounting plate via a rotating shaft. The top of the pushing arm is provided with a mounting mechanism. The end of the pushing arm away from the mounting plate is fixedly connected to a connecting frame. The top of the connecting frame is fixedly connected to a rotating shaft. An arc-shaped plate is fixedly connected to the surface of the rotating shaft. A cleaning tube is fixedly connected to the inner wall of the arc-shaped plate. A pull bolt is inserted into the inner wall of the cleaning tube. A scraping component is provided at the groove of the surface of the arc-shaped plate. The pushing arm drives the connecting frame to perform circular motion inside the internal mixer.

[0015] According to the above technical solution, the scraping assembly includes a distribution seat, which is fixedly connected to the surface slot of the arc plate. A lower pressure seat is rotatably connected to the inner wall of the distribution seat via a rotating shaft. A scraping plate is fixedly connected to the top of the lower pressure seat. A limit tube is fixedly connected to the inner wall of the scraping plate. An adsorption plate is fixedly connected to the bottom of the inner wall of the lower pressure seat. A guide ring is fixedly connected to the surface of the lower pressure seat. The lower pressure seat on the inner wall of the distribution seat can be rotated outward by the internal controller of the arc plate.

[0016] According to the above technical solution, the installation mechanism includes a control panel, which is rotatably connected to the top of the push arm. A movable arm is fixedly connected to the surface of the control panel, and a pressure rod is rotatably connected to the end of the movable arm away from the control panel. A chopping component is provided on the inner wall of the pressure rod. By activating the internal switch of the control panel, the telescopic membranes on the inner walls of the pressure rods on both sides of the control panel can slide and extend vertically.

[0017] According to the above technical solution, the chopping assembly includes a telescopic membrane, which is fixedly connected to the bottom of the inner wall of the pressure rod. A pusher is fixedly connected to the top of the telescopic membrane, and a compression strip is fixedly connected to one side of the pusher. A crushing seat is fixedly connected to the inner wall of the compression strip, and a pressure-bearing cavity is fixedly connected to the inner wall of the crushing seat. The end of the compression strip away from the pusher is fixedly connected to the inner wall of the pressure rod, and a support frame is fixedly connected to the bottom of the compression strip. The end of the support frame away from the compression strip is fixedly connected to the inner wall of the pressure rod, and a pressure regulating ring is fixedly connected to the top of the compression strip. The pusher is slidably connected to both sides of the inner wall of the pressure rod. When the telescopic membrane slides and expands towards the bottom inside the pressure rod, the pusher at its top will squeeze and push the top of the compression strip.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the establishment of a distribution mechanism, achieves automatic batch feeding of raw materials in a timed and categorized manner. First, the main raw rubber premix is ​​added, followed by reinforcing fillers and various additives in stages. Relying on the telescopic arm and conveyor belt for precise point feeding, the raw material feeding position is uniform and controllable, avoiding instantaneous mixing and clumping of multiple raw materials, thus improving the filler agglomeration problem from the source. The internal material dispersion consistency of the rubber compound is significantly improved, shortening the constant-temperature curing time of the rubber compound after masterbatch, reducing quality differences in the rubber compound caused by disordered feeding, and ensuring stable and uniform heat resistance and adhesion performance of the subsequently produced conveyor belt cover rubber.

[0019] 2. By setting up a pushing mechanism, after the cleaning process of the inner wall of the internal mixer is completed, the arc plate can be removed from the surface of the rotating shaft. By pulling out the pull bolt at the top of the arc plate, the internal cavity of the cleaning tube is exposed. The internal cavity of the cleaning tube is connected to the internal storage cavity of the arc plate, so that the old rubber and clumped filler inside the arc plate can be cleaned, thereby realizing online cleaning of the internal mixer and avoiding the blockage of the cleaning mechanism by residual old rubber and clumped filler.

[0020] 3. This invention, through the installation mechanism, controls the pressure rod to rotate at multiple angles, and the telescopic membrane links the compression bar to drive the crushing seat to reciprocate and squeeze, pre-crushing large lumps of filler in the mixing chamber. The support frame limits the compression bar to prevent deformation under pressure, ensuring continuous and stable crushing operation. After the lumps of filler are crushed in advance, the subsequent rotor mixing shear pressure decreases, and the filler can more easily and evenly penetrate into the rubber matrix, improving the overall dispersion quality of the rubber compound. This effectively improves the heat resistance and wear resistance balance of the rubber compound and reduces the cracking and detachment of the conveyor belt surface caused by poor filler dispersion.

[0021] 4. This invention, by setting up a scraping component, can slightly adsorb old rubber and agglomerated filler through the adsorption plate on the inner wall of the lower pressure seat. After cleaning the old rubber and agglomerated filler on the inner wall of the internal mixer, the controller drives the lower pressure seat to rotate inward into the interior of the arc plate. By setting up this component, no residual material is mixed when switching production of different rubber formulations, and impurity particles are prevented from mixing into the rubber, which reduces raw material waste and avoids local heat resistance failure of the finished rubber. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the internal mixer of the present invention; Figure 3 This is a perspective view of the dispensing mechanism of the present invention; Figure 4 This is a perspective view of the feeding component of the present invention; Figure 5 This is a perspective view of the actuating mechanism of the present invention; Figure 6 This is a cross-sectional view of the scraping component of the present invention; Figure 7 This is a cross-sectional view of the installation mechanism of the present invention; Figure 8 This is a perspective view of the shredding component of the present invention.

[0023] In the diagram: 1. Pad; 2. Internal mixer; 3. Discharge valve; 4. Feed tank; 5. Mounting plate; 6. Distribution mechanism; 601. Mixing chamber; 602. Distribution ring; 603. Transfer arm; 604. Feeding assembly; 6041. Mounting box; 6042. Transfer ring; 6043. Telescopic arm; 6044. Clamping seat; 6045. Pushing pad; 6046. Discharge pad; 6047. Conveyor belt; 7. Pushing mechanism; 701. Pushing arm; 702. Connecting frame; 703. Rotating shaft; 704. Arc plate; 705. 706. Pull bolt; 707. Cleaning pipe; 707. Scraper assembly; 7071. Distributor seat; 7072. Lower pressure seat; 7073. Limiting pipe; 7074. Scraper plate; 7075. Guide ring; 7076. Adsorption plate; 8. Installation mechanism; 801. Control panel; 802. Movable arm; 803. Pressure rod; 804. Shredding assembly; 8041. Telescopic membrane; 8042. Pushing frame; 8043. Compression bar; 8044. Pressure regulating ring; 8045. Crushing seat; 8046. Support frame; 8047. Pressure chamber. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] Example 1: See Figures 1-4 The present invention provides a technical solution: a formula for a high-temperature resistant conveyor belt with steel wire rope core, wherein the raw materials are formulated by weight as follows: 20-33 parts of EPDM raw rubber, 10-20 parts of butyl rubber, 5-7 parts of chlorosulfonated polyethylene, 3-6 parts of styrene-butadiene rubber for bonding, 5-7 parts of magnesium oxide, 12-15 parts of high-temperature resistant antioxidant, 15-18 parts of peroxide vulcanizing agent, 10-12 parts of silane coupling agent, 8-13 parts of high-reinforcing silica, and 8-10 parts of heat-resistant and flame-retardant filler.

[0028] A method for preparing a high-temperature resistant conveyor belt with a steel wire rope core includes the following steps: S1: For rubber raw materials such as EPDM, butyl rubber, chlorosulfonated polyethylene, and styrene-butadiene rubber for adhesives, check the Mooney viscosity and heat resistance index.

[0029] S2: The physical and chemical properties of the rubber raw materials magnesium oxide, high-temperature antioxidants, peroxide vulcanizing agents, silane coupling agents, high-reinforcing silica, and heat-resistant and flame-retardant fillers are sampled and tested according to their formulations.

[0030] S3: Select hot-dip galvanized high-carbon steel wire rope as raw material. Randomly inspect the tensile strength of single wires, the thickness of the galvanized layer, and the elongation. Remove rusted, kinked, or peeling steel wire ropes.

[0031] S4: Conduct incoming inspection of auxiliary materials such as release film, heat-resistant adhesive, edge reinforcing strips, and repair adhesive.

[0032] S5: Add EPDM raw rubber, heat-resistant reinforcing filler, antioxidant, softening oil, and adhesive additive sequentially into the internal mixer 2, without adding vulcanizing agent.

[0033] A pad 1 is fixedly connected to the bottom of the internal mixer 2, a guide tank 4 is fixedly connected to the top of the internal mixer 2, a discharge valve 3 is fixedly connected to the inner wall of the internal mixer 2, and a distribution mechanism 6 is set on the top of the inner wall of the internal mixer 2. The production process of the steel wire rope core high temperature resistant conveyor belt 6047 is divided into 7 core processes: raw material acceptance upon arrival → two-stage mixing of high temperature resistant rubber compound → steel wire rope pretreatment → cold bonding and molding of strip blank → high temperature and high pressure vulcanization → finished product post-processing and trimming → performance testing and warehousing. First, raw rubber and other rubber raw materials are put into the inside of the guide tank 4. Then, by starting the intelligent transfer pump inside the distribution ring 602, the raw rubber and other raw materials are automatically transported through the mixing chamber 601 into the storage chamber inside multiple transfer arms 603. At this time, the controller switch inside the mounting box 6041 is activated, which drives the telescopic arm 6043 installed on the inner wall to slide and extend outward.

[0034] The distribution mechanism 6 includes a mixing chamber 601, which is fixedly connected to the top of the inner wall of the mixing machine 2. A distribution ring 602 is fixedly connected to the bottom of the mixing chamber 601. A transmission arm 603 is fixedly connected to the surface of the mixing chamber 601. A feeding component 604 is provided at the end of the transmission arm 603 away from the mixing chamber 601. The telescopic arm 6043 drives the clamping seat 6044 to extend and retract outward into the interior of the mixing machine 2. The controller of the mounting box 6041 drives the pushing pad 6045 on the inner wall of the clamping seat 6044 to rotate. At this time, the raw materials such as raw rubber inside the transmission arm 603 are transported into the interior of the conveyor belt 6047 through the transmission ring 6042 by the intelligent transmission pump. The conveyor belts 6047 on both sides of the mounting box 6041 will transport the raw materials such as raw rubber into the interior of the pushing pad 6045.

[0035] The feeding assembly 604 includes a mounting box 6041, which is fixedly connected to one end of the transmission arm 603. Transmission rings 6042 are fixedly connected to both sides of the mounting box 6041. A conveyor belt 6047 is fixedly connected to the surface of the transmission rings 6042. During the rotation of the pushing pad 6045 inside the internal mixer 2, the raw rubber and other raw materials can be discharged outward into the internal mixer 2 by pushing the inner wall of the pad 6045 to discharge the discharge groove on the surface of the pad 6046. After the raw rubber and other raw materials are temperature controlled and stirred by the internal mixer 2, the rubber raw materials such as silica and oil are sequentially fed into the feed tank 4. Finally, the rubber raw materials are fed into the internal mixer 2 in batches according to the process of the previous step.

[0036] The feeding assembly 604 also includes a telescopic arm 6043. One end of the telescopic arm 6043 is fixedly connected to the inner wall of the mounting box 6041. A clamping seat 6044 is fixedly connected to the end of the telescopic arm 6043 away from the mounting box 6041. The end of the conveyor belt 6047 away from the transmission ring 6042 is fixedly connected to both sides of the clamping seat 6044. A pushing pad 6045 is rotatably connected to the inner wall of the clamping seat 6044. A discharge pad 6046 is fixedly connected to the inner wall of the pushing pad 6045. An installation plate 5 is fixedly connected to the bottom of the inner wall of the internal mixer 2. A pushing mechanism 7 is provided on the top of the installation plate 5. This invention relies on the distribution mechanism 6 to realize the automatic batch feeding of raw materials in a time-sharing and classified manner. First, the main raw rubber premix is ​​fed, and then the reinforcing filler and various additives are added in batches. Relying on the telescopic arm 6043 and the conveyor belt 6047 to deliver materials at fixed points, the raw material feeding position is uniform and controllable, avoiding the instantaneous mixing and agglomeration of multiple raw materials, and improving the filler agglomeration problem from the source. The uniformity of material dispersion within the rubber compound is significantly improved, shortening the constant-temperature curing time after masterbatch mixing. This reduces quality variations caused by disordered feeding, ensuring stable and consistent heat resistance and bonding performance of the 6047 cover rubber for subsequent conveyor belts. Traditional internal mixing uses a method of feeding all raw materials at once. The simultaneous feeding of raw rubber, fumed silica, and heat-resistant additives can easily lead to powder agglomeration and clumping, resulting in poor material mixing uniformity. The rubber compound needs to be left to stand for a long time to mature. Therefore, a feeding component 604 is required.

[0037] Example 2: Based on Example 1, please refer to the following... Figures 5-6 The present invention provides a technical solution: the pushing mechanism 7 includes a pushing arm 701, one end of the pushing arm 701 is rotatably connected to the top of the mounting plate 5 through a rotating shaft, the top of the pushing arm 701 is provided with a mounting mechanism 8, and the end of the pushing arm 701 away from the mounting plate 5 is fixedly connected to a connecting frame 702. First, the internal control machine of the mounting plate 5 is started to drive the top pushing arm 701 to rotate. The pushing arm 701 drives the connecting frame 702 to perform circular motion inside the internal mixer 2. At this time, the arc plate 704 at the top of the connecting frame 702 will come into contact with the inner wall of the internal mixer 2. The scraping component 707 inside the arc plate 704 can clean the old rubber and clumped filler that are easily retained on the inner wall of the internal mixer 2.

[0038] A rotating shaft 703 is fixedly connected to the top of the connecting frame 702. An arc-shaped plate 704 is fixedly connected to the surface of the rotating shaft 703. A cleaning tube 706 is fixedly connected to the inner wall of the arc-shaped plate 704. A pull bolt 705 is inserted into the inner wall of the cleaning tube 706. A scraping component 707 is provided at the groove of the surface of the arc-shaped plate 704. The old rubber and clumped filler that are cleaned out will be sent into the internal storage cavity of the arc-shaped plate 704. After the cleaning process of the inner wall of the internal mixer 2 is completed, the arc-shaped plate 704 can be removed from the surface of the rotating shaft 703. By pulling out the pull bolt 705 at the top of the arc-shaped plate 704, the internal cavity of the cleaning tube 706 is exposed. The internal cavity of the cleaning tube 706 is connected to the internal storage cavity of the arc-shaped plate 704, so that the old rubber and clumped filler inside the arc-shaped plate 704 can be cleaned, thereby realizing the online cleaning of the internal mixer and avoiding the blockage of the cleaning mechanism by residual old rubber and clumped filler.

[0039] The scraping assembly 707 includes a distribution seat 7071, which is fixedly connected to the surface slot of the arc plate 704. The inner wall of the distribution seat 7071 is rotatably connected to a lower pressure seat 7072 via a rotating shaft. A scraper plate 7074 is fixedly connected to the top of the lower pressure seat 7072. When the arc plate 704 rotates circumferentially on the inner wall of the internal mixer 2, the lower pressure seat 7072 on the inner wall of the distribution seat 7071 can be driven to rotate outward by the internal controller of the arc plate 704. When the lower pressure seat 7072 rotates outward to the inner wall of the internal mixer 2, the scraper plate 7074 at one end of the lower pressure seat 7072 will come into contact with the inner wall of the internal mixer 2. The scraper plate 7074 can scrape the old rubber and agglomerated filler on the inner wall of the internal mixer 2. The scraped old rubber and agglomerated filler will slide into the inner wall of the lower pressure seat 7072 through the guide ring 7075.

[0040] In conventional internal mixers, scorched rubber residue, powder, and solidified lumps easily adhere to the corners and walls of the inner cavity. The residual rubber cannot be automatically cleaned, and manual disassembly and cleaning of the machine are required before changing the rubber, resulting in low production efficiency. Therefore, it is necessary to install a scraping component 707.

[0041] A limit tube 7073 is fixedly connected to the inner wall of the scraper plate 7074, and an adsorption plate 7076 is fixedly connected to the bottom of the inner wall of the lower pressure seat 7072. A guide ring 7075 is fixedly connected to the surface of the lower pressure seat 7072. The adsorption plate 7076 on the inner wall of the lower pressure seat 7072 can slightly adsorb old rubber and agglomerated filler. After cleaning the old rubber and agglomerated filler on the inner wall of the internal mixer 2, the controller drives the lower pressure seat 7072 to rotate inward into the interior of the arc plate 704. This achieves no residual material mixing when switching production of different rubber formulations, and prevents impurity particles from mixing into the rubber, which reduces raw material waste and avoids local heat resistance failure of the finished rubber.

[0042] Example 3: Based on Example 2, please refer to the following... Figures 7-8The present invention provides a technical solution: the installation mechanism 8 includes a control disk 801, which is rotatably connected to the top of the push arm 701. A movable arm 802 is fixedly connected to the surface of the control disk 801. A pressure rod 803 is rotatably connected to the end of the movable arm 802 away from the control disk 801. A chopping component 804 is provided on the inner wall of the pressure rod 803. By activating the internal switch of the control disk 801, the telescopic membrane 8041 on the inner wall of the pressure rod 803 on both sides of the control disk 801 can slide and extend up and down. When the telescopic membrane 8041 slides and extends to the bottom inside the pressure rod 803, the push frame 8042 at its top will squeeze and push the top of the compression bar 8043. This will cause one end of the compression bar 8043 to squeeze the crushing seat 8045, causing the crushing seat 8045 to contract inward.

[0043] The chopping assembly 804 includes a telescopic membrane 8041, which is fixedly connected to the bottom of the inner wall of the pressure rod 803. A pusher frame 8042 is fixedly connected to the top of the telescopic membrane 8041. A compression strip 8043 is fixedly connected to one side of the pusher frame 8042. A crushing seat 8045 is fixedly connected to the inner wall of the compression strip 8043. A pressure chamber 8047 is fixedly connected to the inner wall of the crushing seat 8045. The end of the compression strip 8043 away from the pusher frame 8042 is connected to the pressure rod 803. The inner wall is fixedly connected. During the shrinkage of the crushing seat 8045, the crushing ring on the inner wall of the crushing seat 8045 will squeeze the pressure chamber 8047. The rubber raw material is shredded by the squeeze between the crushing ring and the pressure chamber 8047. By setting this mechanism, the control panel 801 drives the pressure rod 803 to rotate at multiple angles, and the telescopic membrane 8041 is linked with the compression bar 8043 to drive the crushing seat 8045 to reciprocate and squeeze, so as to pre-shred and break up the large lumps of filler in the mixing chamber 601.

[0044] High-reinforcement silica and inorganic heat-resistant fillers are prone to compression and agglomeration during storage and transportation. Conventional internal mixing rotors have limited shearing capacity, making it difficult to fully disperse large filler pieces. The filler is unevenly dispersed in the rubber, directly resulting in the inability to achieve both heat resistance and wear resistance in the conveyor belt rubber compound. The filler can only be slowly diffused through long-term curing, hence the need to install a shredding component 804.

[0045] A support frame 8046 is fixedly connected to the bottom of the compression bar 8043. The end of the support frame 8046 away from the compression bar 8043 is fixedly connected to the inner wall of the pressure rod 803. A pressure regulating ring 8044 is fixedly connected to the top of the compression bar 8043. The push frame 8042 is slidably connected to both sides of the inner wall of the pressure rod 803. The support frame 8046 limits the compression bar 8043 to prevent deformation under pressure, ensuring continuous and stable crushing operation. After the agglomerated filler is crushed in advance, the subsequent rotor mixing shear pressure decreases, and the filler is more easily and evenly penetrated into the rubber matrix, improving the overall dispersion quality of the rubber compound, effectively improving the heat resistance and wear resistance balance of the rubber compound, and reducing the cracking and detachment of the rubber surface of the conveyor belt 6047 during use due to poor filler dispersion.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A formulation for a high-temperature resistant conveyor belt with a steel wire rope core, characterized in that, The raw materials are formulated by weight as follows: 20-33 parts EPDM raw rubber, 10-20 parts butyl rubber, 5-7 parts chlorosulfonated polyethylene, 3-6 parts styrene-butadiene rubber for bonding, 5-7 parts magnesium oxide, 12-15 parts high-temperature anti-aging agent, 15-18 parts peroxide vulcanizing agent, 10-12 parts silane coupling agent, 8-13 parts high-reinforcing silica, and 8-10 parts heat-resistant and flame-retardant filler.

2. The method for preparing a high-temperature resistant conveyor belt with a steel wire rope core according to claim 1, characterized in that, Includes the following steps: S1: For rubber raw materials such as EPDM, butyl rubber, chlorosulfonated polyethylene, and styrene-butadiene rubber for adhesives, check the Mooney viscosity and heat resistance index; S2: The physical and chemical properties of magnesium oxide, high-temperature antioxidant, peroxide vulcanizing agent, silane coupling agent, high-reinforcing silica, and heat-resistant and flame-retardant filler in rubber raw materials are sampled and tested according to the formula. S3: Select hot-dip galvanized high-carbon steel wire rope as raw material. Randomly inspect the tensile strength of single wire, the thickness of galvanized layer, and the elongation. Remove rusted, kinked, or peeling steel wire ropes. S4: Conduct incoming inspection of auxiliary materials such as release film, heat-resistant adhesive, edge reinforcing strips, and repair adhesive. S5: EPDM raw rubber, heat-resistant reinforcing filler, antioxidant, softening oil and adhesive additive are added sequentially into the internal mixer (2), without adding vulcanizing agent.

3. The method for preparing a high-temperature resistant conveyor belt with a steel wire rope core according to claim 2, characterized in that: The bottom of the internal mixer (2) is fixedly connected to a pad (1), the top of the internal mixer (2) is fixedly connected to a guide tank (4), the inner wall of the internal mixer (2) is fixedly connected to a discharge valve (3), and the top of the inner wall of the internal mixer (2) is provided with a distribution mechanism (6). The distribution mechanism (6) includes: A mixing chamber (601) is fixedly connected to the top of the inner wall of the mixing machine (2). A distribution ring (602) is fixedly connected to the bottom of the mixing chamber (601). A transmission arm (603) is fixedly connected to the surface of the mixing chamber (601). A feeding component (604) is provided at the end of the transmission arm (603) away from the mixing chamber (601). The feeding assembly (604) includes: Mounting box (6041), which is fixedly connected to one end of the transmission arm (603), and transmission rings (6042) are fixedly connected to both sides of the mounting box (6041). A conveyor belt (6047) is fixedly connected to the surface of the transmission ring (6042), and the conveyor belt (6047) is used to discharge rubber raw materials to the outside.

4. The method for preparing a high-temperature resistant conveyor belt with a steel wire rope core according to claim 3, characterized in that: The feeding assembly (604) also includes a telescopic arm (6043), one end of which is fixedly connected to the inner wall of the mounting box (6041). The end of the telescopic arm (6043) away from the mounting box (6041) is fixedly connected to a clamping seat (6044). The end of the conveyor belt (6047) away from the transmission ring (6042) is fixedly connected to both sides of the clamping seat (6044). The inner wall of the clamping seat (6044) is rotatably connected to a pushing pad (6045). The inner wall of the pushing pad (6045) is fixedly connected to a discharge pad (6046). The bottom of the inner wall of the internal mixer (2) is fixedly connected to an installation plate (5). The top of the installation plate (5) is provided with a pushing mechanism (7). The pushing pad (6045) is used to push the rubber raw material.

5. The method for preparing a high-temperature resistant conveyor belt with a steel wire rope core according to claim 4, characterized in that: The pushing mechanism (7) includes a pushing arm (701), one end of which is rotatably connected to the top of the mounting plate (5) via a rotating shaft. The top of the pushing arm (701) is provided with a mounting mechanism (8). The end of the pushing arm (701) away from the mounting plate (5) is fixedly connected to a connecting frame (702). The top of the connecting frame (702) is fixedly connected to a rotating shaft (703). An arc plate (704) is fixedly connected to the surface of the rotating shaft (703). A cleaning tube (706) is fixedly connected to the inner wall of the arc plate (704). A pull bolt (705) is inserted into the inner wall of the cleaning tube (706). A scraping component (707) is provided at the groove on the surface of the arc plate (704). The arc plate (704) is used to contact the inner wall of the internal mixer (2).

6. The method for preparing a high-temperature resistant conveyor belt with a steel wire rope core according to claim 5, characterized in that: The scraping assembly (707) includes a distribution seat (7071), which is fixedly connected to the surface slot of the arc plate (704). The inner wall of the distribution seat (7071) is rotatably connected to a lower pressure seat (7072) via a rotating shaft. The top of the lower pressure seat (7072) is fixedly connected to a scraping plate (7074). The inner wall of the scraping plate (7074) is fixedly connected to a limit tube (7073). The bottom of the inner wall of the lower pressure seat (7072) is fixedly connected to an adsorption plate (7076). The surface of the lower pressure seat (7072) is fixedly connected to a guide ring (7075). The scraping plate (7074) is used to scrape the inner wall of the internal mixer (2).

7. The method for preparing a high-temperature resistant conveyor belt with a steel wire rope core according to claim 5, characterized in that: The installation mechanism (8) includes a control panel (801), which is rotatably connected to the top of the push arm (701). A movable arm (802) is fixedly connected to the surface of the control panel (801). A pressure rod (803) is rotatably connected to one end of the movable arm (802) away from the control panel (801). A shredding assembly (804) is provided on the inner wall of the pressure rod (803). The control panel (801) is used to drive the pressure rod (803) to rotate.

8. The method for preparing a high-temperature resistant conveyor belt with a steel wire rope core according to claim 7, characterized in that: The chopping assembly (804) includes a telescopic membrane (8041) fixedly connected to the bottom of the inner wall of a pressure rod (803). A pusher frame (8042) is fixedly connected to the top of the telescopic membrane (8041). A compression strip (8043) is fixedly connected to one side of the pusher frame (8042). A crushing seat (8045) is fixedly connected to the inner wall of the compression strip (8043). A pressure chamber (8047) is fixedly connected to the inner wall of the crushing seat (8045). The compression strip (8043) is located away from the pusher frame (8042). One end of the compression bar (8043) is fixedly connected to the inner wall of the pressure rod (803). A support frame (8046) is fixedly connected to the bottom of the compression bar (8043). The end of the support frame (8046) away from the compression bar (8043) is fixedly connected to the inner wall of the pressure rod (803). A pressure regulating ring (8044) is fixedly connected to the top of the compression bar (8043). The push frame (8042) is slidably connected to both sides of the inner wall of the pressure rod (803). The telescopic membrane (8041) is used to drive the push frame (8042) to slide up and down on the inner wall of the pressure rod (803).

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