A low-energy consumption conveyor belt

Abstract

The present application discloses a low-energy consumption conveyor belt, belonging to the technical field of conveyor belts, and solves the problems of large rolling friction and reduced elasticity after heat generation in the prior art. In the present application, the cover rubber layer is extruded and formed from low-energy consumption rubber; when the low-energy consumption rubber is manufactured, an ionic liquid and carbon black are stirred and mixed to form a liquid-phase filler slurry; and the liquid-phase filler slurry and ethylene propylene diene monomer rubber are subjected to continuous liquid-phase mixing, and auxiliary materials are added after mixing and vulcanized to obtain a low-energy consumption rubber material. The low-energy consumption conveyor belt of the present invention reduces mechanical loss during operation of the lower cover rubber of the conveyor belt through formula adjustment, thereby playing a role in reducing energy consumption.

Description

Technical Field

[0001] The present invention relates to a low - energy - consumption conveyor belt, belonging to the technical field of conveyor belts. Background Art

[0002] The conveyor belt is used for belt conveyors and is widely used in agriculture, industrial and mining enterprises, and the transportation industry to convey various solid lumps, powder - like materials or finished items. The conveyor belt can transport continuously, efficiently, and at a large inclination angle. The conveyor belt is safe to operate, easy to use, easy to maintain, has low freight costs, can shorten the transportation distance, reduce the project cost, and save manpower and material resources.

[0003] During the operation of the conveyor belt, the driving roller provides the driving force for the operation of the conveyor belt, so that the conveyor belt drives the material to be conveyed. During the operation of the conveyor belt, if its conveying distance is too long, several idlers need to be arranged to support the conveyor belt. The idlers are generally set as driven rollers and only play the role of supporting the conveyor belt. The non - working surface of the conveyor belt is in rolling friction contact with the idlers. The energy consumption of the conveyor belt, in addition to the kinetic energy consumption for material conveying, is mainly the rolling friction energy consumption generated by the friction between the non - working surface of the conveyor belt and the idlers. Due to the continuous operation of the conveyor belt and the pressure brought by the conveyed material, the rolling friction force between the conveyor belt and the idlers is relatively large. And due to the continuous working characteristics of the conveyor belt, when a large friction force is generated between the conveyor belt and the idlers, the conveyor belt will generate a heating phenomenon, which reduces the elasticity and increases the viscosity of the non - working surface of the conveyor belt, further increasing the energy consumption caused by the rolling friction between the conveyor belt and the idlers. Summary of the Invention

[0004] The present invention provides a low - energy - consumption conveyor belt, which reduces the mechanical loss during operation through formula adjustment, playing a role in reducing energy consumption.

[0005] The technical solution adopted by the present invention is a low - energy - consumption conveyor belt, which includes an upper working surface layer and a lower non - working surface layer. The surface of the lower non - working surface layer in contact with the driving roller has a lower cover rubber layer; the upper working surface layer, the lower non - working surface layer, and the lower cover rubber layer are laminated in sequence; its characteristics are: the lower cover rubber layer is extruded and formed from low - energy - consumption rubber; the low - energy - consumption rubber is prepared through the following steps:

[0006] a) Stir and mix the ionic liquid and carbon black to form a liquid - phase filler slurry;

[0007] b) Continuously add ethylene - propylene - diene monomer (EPDM) rubber latex and the liquid - phase filler slurry formed in step a) into the rotating mixer at the same time. After stirring for a certain time, a first rubber mixture is obtained;

[0008] c) Feed the first rubber mixture into an extruder for extrusion and dehydration operation;

[0009] d) Feed the materials completed in step c) into a dryer for drying, and after completion, obtain a low - energy - consumption rubber masterbatch;

[0010] e) Add the low - energy - consumption rubber masterbatch and auxiliary material one into an open mill or an internal mixer for mixing to obtain a mixed rubber;

[0011] f) Add auxiliary material two to the mixed rubber, stir and mix, and then carry out vulcanization; after the vulcanization is completed, obtain a low - energy - consumption rubber material.

[0012] Optimally, for the above - mentioned low - energy - consumption conveyor belt, auxiliary material one includes an alkoxysilane coupling agent and an antioxidant; the auxiliary material two includes paraffin oil, stearic acid, tackifying resin, microcrystalline wax B - 10, dispersant, vulcanizing agent, TAIC.

[0013] Optimally, for the above - mentioned low - energy - consumption conveyor belt, among the upper working surface layer, the lower non - working surface layer, and the lower cover rubber layer, at least the lower cover rubber layer is extruded and formed from the low - energy - consumption rubber.

[0014] Optimally, for the above - mentioned low - energy - consumption conveyor belt, the weight part of carbon black is 10% to 20% of the weight part of the ionic liquid; the ionic liquid is prepared by mixing 2,6 - dihydroxyisonicotinic acid and an aqueous solution of tetrabutylammonium hydroxide, wherein the weight ratio of 2,6 - dihydroxyisonicotinic acid to tetrabutylammonium hydroxide is 1:3; the concentration of the aqueous solution of tetrabutylammonium hydroxide is 40%.

[0015] Optimally, for the above - mentioned low - energy - consumption conveyor belt, in step a), the stirring speed of the ionic liquid and carbon black is 60 - 120 r / min, and the stirring time is 1 to 3 hours; in step b), the stirring speed of the ethylene - propylene - diene monomer (EPDM) rubber latex and the liquid - phase filler slurry during stirring and mixing is 500 - 1500 r / min, and the stirring time is less than or equal to 10 seconds.

[0016] Optimally, for the above - mentioned low - energy - consumption conveyor belt, in step d), the drying temperature is less than or equal to 140 degrees Celsius; after step d) is completed, the water content in the low - energy - consumption rubber masterbatch is less than or equal to 1%.

[0017] Optimally, for the above - mentioned low - energy - consumption conveyor belt, the weight of the carbon black used is 45% of the weight of the ethylene - propylene - diene monomer (EPDM) rubber used; the weight of the paraffin oil used is 5% of the weight of the ethylene - propylene - diene monomer (EPDM) rubber used; the weight of the stearic acid used is 2.02% of the weight of the ethylene - propylene - diene monomer (EPDM) rubber used; the weight of the tackifying resin used is 4% of the weight of the ethylene - propylene - diene monomer (EPDM) rubber used; the weight of the microcrystalline wax B - 10 used is 1.52% of the weight of the ethylene - propylene - diene monomer (EPDM) rubber used; the weight of the dispersant used is 1.52% of the weight of the ethylene - propylene - diene monomer (EPDM) rubber used; the weight of the vulcanizing agent used is 4.5% of the weight of the ethylene - propylene - diene monomer (EPDM) rubber used; the weight of the TAIC used is 1.5% of the weight of the ethylene - propylene - diene monomer (EPDM) rubber used.

[0018] Optimized, for the above low - energy - consumption conveyor belt, the dosage of alkoxysilane coupling agent is 0.9% by weight of the dosage of ethylene - propylene - diene monomer rubber, and the dosage of antioxidant is 1.5% by weight of the dosage of ethylene - propylene - diene monomer rubber.

[0019] The advantages of this application are as follows:

[0020] In the technical solution of this application, after mixing the ionic liquid with the filler and then carrying out continuous liquid - phase mixing with ethylene - propylene - diene monomer rubber, the mixing and contact between the ionic liquid and carbon black are more uniform and sufficient. When the ionic liquid catalyzes the surface silylation of carbon black, it can play a better catalytic effect. Thus, the physical properties of the low - energy - consumption rubber compound are improved, its dynamic heat generation is low, the rolling resistance and dynamic heat generation are reduced, so that the low - energy - consumption rubber compound has low viscosity and high elasticity during operation, and the rolling friction force is reduced.

[0021] And through continuous liquid - phase mixing of the liquid - phase filler slurry and ethylene - propylene - diene monomer rubber, rapid mixing, solidification, and drying can better maintain the interaction among ethylene - propylene - diene monomer rubber, ionic liquid, and filler, more effectively avoid the degradation of ethylene - propylene - diene monomer rubber, and then maintain the physical properties of the low - energy - consumption rubber compound, ensure good elasticity, and further reduce the rolling friction force. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of this application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further elaborates the technical features of the present invention in combination with the drawings and specific embodiments.

[0024] As shown in the figure, the present invention is a low - energy - consumption conveyor belt, which includes an upper working surface layer 1 and a lower non - working surface layer 2. A lower cover rubber layer 3 is provided on the surface of the lower non - working surface layer 2 that is in contact with the driving roller; the upper working surface layer 1, the lower non - working surface layer 2, and the lower cover rubber layer 3 are laminated in sequence. Among them, at least the material of the lower cover rubber layer 3 is low - energy - consumption rubber, and the upper working surface layer 1 and the lower non - working surface layer 2 can also use low - energy - consumption rubber material, and the specific selection can be made according to the requirements of the materials conveyed by the conveyor belt.

[0025] In this embodiment, the low - energy - consumption rubber is prepared through the following steps:

[0026] a) After stirring and mixing the ionic liquid and carbon black, a liquid - phase filler slurry is formed; among them, the ionic liquid is prepared by mixing 2,6 - dihydroxyisonicotinic acid and an aqueous solution of tetrabutylammonium hydroxide. The weight ratio of 2,6 - dihydroxyisonicotinic acid to tetrabutylammonium hydroxide is 1:3; the concentration of the aqueous solution of tetrabutylammonium hydroxide is 40%; the weight part of carbon black is 10% of the weight part of the ionic liquid. The stirring speed of the ionic liquid and carbon black is 60 r / min, and the stirring time is 1 hour.

[0027] b) Continuously and simultaneously add ethylene propylene diene monomer (EPDM) emulsion and the liquid-phase filler slurry formed in step a) into a rotating mixer. After stirring for a certain time, obtain rubber mixture one. Among them, the dosage weight of carbon black is 45% of the dosage weight of EPDM; the stirring speed of the EPDM emulsion and the liquid-phase filler slurry during stirring and mixing is 500 r / min, and the stirring time is 8 seconds.

[0028] c) Feed rubber mixture one into an extruder for extrusion and dehydration operation;

[0029] d) Feed the material completed in step c) into a dryer for drying. The drying temperature is 100 degrees Celsius. After completion, obtain a low-energy consumption rubber masterbatch, and the water content in the low-energy consumption rubber masterbatch is 0.97%;

[0030] e) Add the low-energy consumption rubber masterbatch and auxiliary material one into an open mill or an internal mixer for mixing to obtain a mixed rubber; Auxiliary material one includes an alkoxysilane coupling agent and an antioxidant;

[0031] f) Add auxiliary material two into the mixed rubber and stir and mix, then carry out vulcanization; After vulcanization is completed, obtain a low-energy consumption rubber material. Among them, auxiliary material two includes paraffin oil, stearic acid, tackifying resin, microcrystalline wax B-10, dispersant, vulcanizing agent, TAIC.

[0032] In this embodiment, the dosages of all ingredients are as follows:

[0033] The dosage weight of paraffin oil is 5% of the dosage weight of EPDM; the dosage weight of stearic acid is 2.02% of the dosage weight of EPDM; the dosage weight of tackifying resin is 4% of the dosage weight of EPDM; the dosage weight of microcrystalline wax B-10 is 1.52% of the dosage weight of EPDM; the dosage weight of dispersant is 1.52% of the dosage weight of EPDM; the dosage weight of vulcanizing agent is 4.5% of the dosage weight of EPDM; the dosage weight of TAIC is 1.5% of the dosage weight of EPDM; the dosage weight of alkoxysilane coupling agent is 0.9% of the dosage weight of EPDM, and the dosage weight of antioxidant is 1.5% of the dosage weight of EPDM.

[0034] Example 2

[0035] The difference between this example and Example 1 is that:

[0036] The low-energy consumption rubber is produced through the following steps:

[0037] a) Stir and mix ionic liquid and carbon black to form a liquid-phase filler slurry; the weight fraction of carbon black is 20% of the weight fraction of ionic liquid. The stirring speed of the ionic liquid and carbon black is 120 r / min, and the stirring time is 3 hours.

[0038] b) Continuously and simultaneously add ethylene propylene diene monomer (EPDM) latex and the liquid-phase filler slurry formed in step a) into a rotating blender. After stirring for a certain period of time, obtain Rubber Mixture 1, where the dosage weight of carbon black is 45% of the dosage weight of EPDM; the stirring speed during the stirring and mixing of EPDM latex and the liquid-phase filler slurry is 1500 r / min, and the stirring time is 9 seconds.

[0039] c) Feed Rubber Mixture 1 into an extruder for extrusion and dehydration operation.

[0040] d) Feed the material completed in step c) into a dryer for drying at a drying temperature of 140 °C. After completion, obtain a low-energy consumption rubber masterbatch, and the water content in the low-energy consumption rubber masterbatch is less than or equal to 0.76%.

[0041] e) Add the low-energy consumption rubber masterbatch and Auxiliary Material 1 into an open mill or an internal mixer for mixing to obtain a mixed rubber; Auxiliary Material 1 includes an alkoxysilane coupling agent and an antioxidant.

[0042] f) Add Auxiliary Material 2 into the mixed rubber and stir and mix it, then carry out vulcanization; after the vulcanization is completed, obtain a low-energy consumption rubber material. Among them, Auxiliary Material 2 includes paraffin oil, stearic acid, tackifying resin, microcrystalline wax B-10, dispersant, vulcanizing agent, TAIC.

[0043] Example 3

[0044] The difference between this example and Example 1 is as follows:

[0045] The low-energy consumption rubber is prepared through the following steps:

[0046] a) Stir and mix an ionic liquid and carbon black to form a liquid-phase filler slurry; the weight part of carbon black is 17% of the weight part of the ionic liquid. The stirring speed of the ionic liquid and carbon black is 100 r / min, and the stirring time is 2 hours.

[0047] b) Continuously and simultaneously add EPDM latex and the liquid-phase filler slurry formed in step a) into a rotating blender. After stirring for a certain period of time, obtain Rubber Mixture 1, where the dosage weight of carbon black is 45% of the dosage weight of EPDM; the stirring speed during the stirring and mixing of EPDM latex and the liquid-phase filler slurry is 1000 r / min, and the stirring time is 10 seconds.

[0048] c) Feed Rubber Mixture 1 into an extruder for extrusion and dehydration operation.

[0049] d) Feed the material completed in step c) into a dryer for drying at a drying temperature of 120 °C. After completion, obtain a low-energy consumption rubber masterbatch, and the water content in the low-energy consumption rubber masterbatch is less than or equal to 0.83%.

[0050] e) Add the low-energy rubber masterbatch and auxiliary material 1 into an open mill or an internal mixer for mixing to obtain a mixed rubber.

[0051] f) Add auxiliary material 2 into the mixed rubber, stir and mix, and then carry out vulcanization; after the vulcanization is completed, a low-energy rubber material is obtained.

[0052] Next, compare the low-energy rubber material obtained by the technical solution of Example 3 with the rubber material of Comparative Example 1. The rubber material of Comparative Example 1 was prepared by a conventional method, and the preparation process is as follows:

[0053] A method for preparing a high-performance tread rubber by in-situ catalytic silanization reaction of a filler with an ionic liquid includes the following steps:

[0054] Mix 2,6-dihydroxyisonicotinic acid and tetrabutylammonium hydroxide in a weight ratio of 1:3 to obtain an ionic liquid;

[0055] Add ethylene propylene diene monomer rubber, carbon black, alkoxysilane coupling agent, and ionic liquid into an open mill or an internal mixer in sequence for mixing to obtain a mixed rubber;

[0056] Add auxiliary material 2 and an antioxidant into the mixed rubber at room temperature and then carry out vulcanization to obtain a rubber material.

[0057] Conduct an experimental comparison between the low-energy rubber material obtained by the technical solution of Example 3 and the comparative rubber material obtained by the technical solution of Comparative Example 1. In terms of tensile strength, the low-energy rubber material is 21.7, and the comparative rubber material is 20.9; in terms of the rolling resistance coefficient N / kN at 60 °C, the low-energy rubber material is 72, and the comparative rubber material is 57. At a conveying speed of 2.5 m / s, the temperature rise of the low-energy rubber material is 42 °C, and the temperature rise of the comparative rubber material is 49 °C.

[0058] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions, or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A low-energy consumption conveyor belt, comprising an upper working surface layer (1) and a lower non-working surface layer (2), and a lower cover rubber layer (3) is provided on the surface of the lower non-working surface layer (2) that is in contact with the driving roller; the upper working surface layer (1), the lower non-working surface layer (2), and the lower cover rubber layer (3) are sequentially laminated; characterized in that: The lower cover rubber layer (3) is formed by extruding low-energy consumption rubber; the low-energy consumption rubber is prepared through the following steps: a) Stir and mix the ionic liquid and carbon black to form a liquid-phase filler slurry; b) Continuously and simultaneously add ethylene propylene diene monomer (EPDM) rubber latex and the liquid-phase filler slurry formed in step a) into a rotating mixer. After stirring for a certain time, obtain the first rubber mixture; c) Feed the first rubber mixture into an extruder for extrusion and dehydration operation; d) Feed the material completed in step c) into a dryer for drying to obtain a low-energy consumption rubber masterbatch after completion; e) Add the low-energy consumption rubber masterbatch and auxiliary material 1 into an open mill or internal mixer for mixing to obtain a mixed rubber; f) Add auxiliary material 2 into the mixed rubber and stir and mix, then carry out vulcanization; after vulcanization is completed, obtain the low-energy consumption rubber material; The weight parts of the carbon black are 10% to 20% of the weight parts of the ionic liquid; the ionic liquid is prepared by mixing 2,6-dihydroxyisonicotinic acid and an aqueous solution of tetrabutylammonium hydroxide. Among them, the weight ratio of 2,6-dihydroxyisonicotinic acid to tetrabutylammonium hydroxide is 1:3; the concentration of the aqueous solution of tetrabutylammonium hydroxide is 40%; The auxiliary material 1 includes an alkoxysilane coupling agent and an antioxidant; the auxiliary material 2 includes paraffin oil, stearic acid, tackifying resin, microcrystalline wax B-10, dispersant, vulcanizing agent, TAIC.

2. The low-energy consumption conveyor belt according to claim 1, wherein: Among the three layers of the upper working surface layer (1), the lower non-working surface layer (2), and the lower cover rubber layer (3), at least the lower cover rubber layer (3) is formed by extruding low-energy consumption rubber.

3. The low-energy consumption conveyor belt according to claim 1, wherein: In step a), the stirring speed of the ionic liquid and carbon black is 60 - 120 r / min, and the stirring time is 1 to 3 hours; in step b), the stirring speed of the EPDM rubber latex and the liquid-phase filler slurry during stirring and mixing is 500 - 1500 r / min, and the stirring time is less than or equal to 10 seconds.

4. The low-energy consumption conveyor belt according to claim 1, wherein: In step d), the drying temperature is less than or equal to 140 °C; after step d) is completed, the water content in the low-energy consumption rubber masterbatch is less than or equal to 1%.

5. The low-energy consumption conveyor belt according to claim 1, characterized in that: The dosage weight of the carbon black is 45% of the dosage weight of the EPDM rubber; the dosage weight of the paraffin oil is 5% of the dosage weight of the EPDM rubber; the dosage weight of the stearic acid is 2.02% of the dosage weight of the EPDM rubber; the dosage weight of the tackifying resin is 4% of the dosage weight of the EPDM rubber; the dosage weight of the microcrystalline wax B-10 is 1.52% of the dosage weight of the EPDM rubber; the dosage weight of the dispersant is 1.52% of the dosage weight of the EPDM rubber; the dosage weight of the vulcanizing agent is 4.5% of the dosage weight of the EPDM rubber; the dosage weight of the TAIC is 1.5% of the dosage weight of the EPDM rubber.

6. The low-energy consumption conveyor belt according to claim 1, wherein: The dosage weight of the alkoxysilane coupling agent is 0.9% of the dosage weight of the EPDM rubber, and the dosage weight of the antioxidant is 1.5% of the dosage weight of the EPDM rubber.

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