High-precision epoxy resin full-automatic metering and adding device

Abstract

The invention relates to the technical field of road construction, in particular to a high-precision epoxy resin full-automatic metering and adding device which comprises a storage unit, a heating and heat preservation unit, a flow control unit, a metering and pumping unit and an operation monitoring unit. The storage unit is used for storing an epoxy resin main agent and a curing agent and preliminarily heating the epoxy resin main agent and the curing agent to keep stable temperature; the heating and heat preservation unit conducts secondary heating on the epoxy resin and the curing agent; the flow control unit accurately controls the flow of the heated epoxy resin and the curing agent; the metering pumping unit pumps and mixes epoxy resin and a curing agent according to a preset proportion, the operation monitoring unit automatically adjusts and monitors the operation state, the liquid level, the temperature and the flow of each unit through a PLC control system, high precision and high efficiency of the adding process are ensured, and the device can automatically adjust the mixing ratio of epoxy asphalt concrete on the steel bridge floor according to the mixing ratio requirement of epoxy asphalt concrete on the steel bridge floor. Epoxy resin is accurately added, the error of the adding amount is reduced, and the quality stability of the epoxy asphalt concrete is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of road construction, and in particular to a high-precision fully automatic metering and adding device for epoxy resin. Background Art

[0002] Epoxy resin is an important synthetic polymer material, usually synthesized by a complex chemical modification reaction of epoxy resin main agent, curing agent and matrix asphalt. After epoxy resin and asphalt are mixed, a composite system of mutually dispersed phases is formed, chemically reacting with each other and cross-linking is produced to form a uniform, dense and stable three-dimensional network cross-linking structure, thereby enhancing the stability and uniformity of the material microstructure. Epoxy asphalt concrete prepared by epoxy resin has a high bending modulus and good deformation performance, which can provide excellent deformation coordination performance and high composite stiffness for steel bridge decks. Therefore, more and more large-span steel bridge decks choose epoxy asphalt concrete as the pavement layer.

[0003] As an important material for steel bridge deck paving, epoxy asphalt concrete has stronger strength, durability, toughness and deformation resistance than ordinary asphalt concrete, and can better meet the special requirements of steel bridge deck paving. However, the construction of epoxy asphalt concrete is difficult, which has also led to the limitation of domestic construction level. The difficulty of construction mainly comes from its material properties. The ratio and measurement of epoxy resin main agent and curing agent must be accurate. The high viscosity of epoxy resin main agent causes it to hang on the wall, and liquid movement such as viscous flow causes inaccurate measurement. The material storage requirements are high, and the unstable environment can easily cause the material to deteriorate and change. The process of manually weighing and adding epoxy resin main agent and curing agent may also introduce measurement errors, and requires a lot of manual operation, resulting in low efficiency and prone to quality control problems.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] The present invention provides a high-precision fully automatic metering and adding device for epoxy resin, thereby effectively solving the problems pointed out in the background technology.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: A high-precision fully automatic metering and adding device for epoxy resin, comprising: a material storage unit, a heating and heat preservation unit, a flow control unit, a metering pumping unit and an operation monitoring unit which are arranged in sequence; The material storage unit is used to store the epoxy resin main agent and the curing agent, and preliminarily heat the stored epoxy resin main agent and the curing agent to stabilize the storage temperature; The two heating and heat preservation units are used to store the epoxy resin and curing agent after being transported out of the storage unit and removed from the barrel, and to perform secondary heating on the stored epoxy resin main agent or curing agent; The two flow control units are respectively used to accurately control the flow of the epoxy resin and the curing agent in the heating and heat preservation unit; The metering pumping unit is used to accurately pump the epoxy resin and curing agent in the flow control unit, and add and mix them in a predetermined proportion; The operation monitoring unit includes a PLC control system, which automatically adjusts and controls the material storage unit, the heating and insulation unit, the flow control unit and the metering pumping unit, and monitors the operating status, liquid level, temperature and flow parameters of the device in real time.

[0007] Furthermore, the material storage unit includes a heat preservation room, a heating resistance wire and a blower; The heat preservation room is used to store epoxy resin main agent and curing agent. The blower and the heating resistance wire are arranged on one side of the heat preservation room. The heat generated by the heating resistance wire is blown into the heat preservation room in the form of hot air heating by the blower to preliminarily heat the stored epoxy resin main agent and curing agent.

[0008] Furthermore, each of the heating and heat preservation units comprises a glue unloading pool, a glue pump, a glue storage tank and a first pipeline; The glue removal tank is used to receive the epoxy resin main agent or curing agent after being removed from the barrel; The first pipe is used to connect the glue removal pool and the glue storage tank, and the glue pump is arranged on the first pipe, and is used to pump the epoxy resin main agent or curing agent in the glue removal pool into the glue storage tank; A heating coil is provided at the bottom of the glue storage tank, and the heating coil is externally connected to a heat-conducting oil furnace for secondary heating of the epoxy resin main agent or curing agent in the glue storage tank.

[0009] Furthermore, each of the heating and heat preservation units also includes a circulation pipeline; The circulation pipeline is provided with a glue pump, one end of which is connected to the bottom of the glue storage tank, and the other end is connected to the top of the glue storage tank, so as to circulate the epoxy resin main agent or curing agent in the glue storage tank.

[0010] Furthermore, a liquid level float is provided on the glue storage tank to display the liquid level of the epoxy resin main agent or curing agent in the glue storage tank; The thermal oil furnace, the glue pump and the liquid level float are all connected to the PLC control system, and the temperature and liquid level of the epoxy resin main agent or curing agent in the glue storage tank are integratedly controlled by the PLC control system.

[0011] Further, the flow control unit includes a second pipeline and a glue pump, a flow restrictor and a flow meter sequentially arranged on the second pipeline; One end of the second pipeline is connected to the heating and heat preservation unit, and the other end is connected to the metering pumping unit, and is used to transport the epoxy resin main agent or curing agent from the heating and heat preservation unit to the metering pumping unit; The flow limiter is arranged on the glue pump to limit the liquid flow in the second pipeline. The flow meter is used to test the liquid flow in the second pipeline and feed back data to the PLC control system to adjust and accurately control the liquid flow in real time.

[0012] Furthermore, the second pipeline is also provided with a check valve, and the check valve is used to prevent the epoxy resin main agent or the curing agent in the metering pumping unit from flowing back.

[0013] Further, the metering pumping unit includes a metering tank, a stirring tank, a hanging weighing sensor and a first air valve; The two metering tanks are arranged above the stirring tank, and the outlets of the metering tanks are connected to the inlet of the stirring tank, so as to transport the epoxy resin main agent or the curing agent to the stirring tank; The stirring tank is provided with a stirring blade, which is connected to an external stirring motor and is used to stir and mix the epoxy resin main agent and the curing agent; The two hanging weighing sensors are respectively arranged on the two metering tanks, and are used to weigh the epoxy resin main agent or curing agent entering the stirring tank; Multiple first air valves are respectively arranged at the outlets on the two metering tanks. The signals of the first air valve and the suspended weighing sensor are fed back to the PLC control system. When the weight reaches a preset value, the PLC control system sends a stop signal and feeds it back to the first air valve. The first air valve is closed, and the feeding of the epoxy resin main agent or the curing agent stops.

[0014] Furthermore, a third pipeline is provided at the bottom of the stirring tank, and a glue pump is provided on the third pipeline for pumping the mixed epoxy resin main agent and curing agent to a subsequent process.

[0015] Furthermore, the operation monitoring unit also includes a field monitoring system, a control room monitoring system and an operation room operation platform; The monitoring system monitors the material storage unit, the heating and heat preservation unit, the flow control unit and the metering pumping unit in real time, and records the equipment operation and production process in full through the video recording function to ensure the traceability of the production process; The control room monitoring system is used to centrally monitor the operating status of the entire equipment, including real-time display of the working status, liquid level, and temperature parameters of each unit, and timely issue an alarm signal when an abnormality occurs; The operating room operating platform is used for the interaction between operators and equipment and provides a visual operating interface.

[0016] The technical solution of the present invention can achieve the following technical effects: The device can accurately add epoxy resin according to the mix ratio requirements of epoxy asphalt concrete on steel bridge decks. The error of the added amount can be controlled within a very small range, generally within ±0.5%, thus ensuring the quality stability of epoxy asphalt concrete. The automated addition process does not require frequent manual measurement and addition of epoxy resin, greatly reducing construction time and labor costs. Compared with traditional manual addition methods, construction efficiency can be increased several times. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of a high-precision fully automatic metering and adding device for epoxy resin; Figure 2 is a schematic diagram of a storage unit; Figure 3 is a schematic diagram of a heating and heat preservation unit; Figure 4 is a schematic diagram of a flow control unit; Figure 5 A curve diagram for the flow rate controlled by the flow restrictor; Figure 6 is a schematic diagram of a metering pumping unit; Figure 7 Schematic diagram of the operation monitoring unit.

[0019] Figure numerals: 1. material storage unit; 11. heat preservation room; 12. heating resistance wire; 13. blower; 2. heating and heat preservation unit; 21. glue unloading pool; 22. glue pump; 23. glue storage tank; 24. heating coil; 25. liquid level float; 26. first pipeline; 27. circulation pipeline; 3. flow control unit; 31. second pipeline; 32. flow limiter; 33. flow meter; 34. check valve; 4. metering pumping unit; 41. metering tank; 42. stirring tank; 43. stirring blade; 44. stirring motor; 45. hanging weighing sensor; 46; first air valve; 47. second air valve; 48. third pipeline; 5. operation monitoring unit; 51. PLC control system; 52. on-site monitoring system; 53. control room monitoring system; 54. operation platform in the operation room; 01. Epoxy resin main agent; 02. Curing agent. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] like Figures 1 to 7 As shown: A high-precision fully automatic metering and adding device for epoxy resin, comprising: a material storage unit 1, a heating and heat preservation unit 2, a flow control unit 3, a metering pumping unit 4 and an operation monitoring unit 5 which are arranged in sequence; The material storage unit 1 is used to store the epoxy resin main agent 01 and the curing agent 02, and preliminarily heat the stored epoxy resin main agent 01 and the curing agent 02 to stabilize the storage temperature; preliminarily heat the epoxy resin main agent 01 and the curing agent 02 to prepare for the subsequent addition of the epoxy resin main agent 01 and the curing agent 02 to the heating and heat preservation unit 2; The two heating and heat preservation units 2 are used to store the epoxy resin and curing agent 02 after being transported out of the storage unit 1 and removed from the barrel, and to perform secondary heating on the stored epoxy resin main agent 01 or curing agent 02 to reduce its viscosity, so as to ensure that no wall hanging, viscous flow, etc. occur during the adding process; Two flow control units 3 are used to accurately control the flow of epoxy resin and curing agent 02 in the heating and heat preservation unit 2 and reduce the metering error caused by liquid movement; The metering pumping unit 4 is used to accurately pump the epoxy resin and the curing agent 02 in the flow control unit 3, and add and mix them according to a predetermined ratio; The operation monitoring unit 5 includes a PLC control system 51, which automatically adjusts and controls the material storage unit 1, the heating and insulation unit 2, the flow control unit 3 and the metering pumping unit 4, and monitors the operating status, liquid level, temperature, flow rate and other parameters of the device in real time to ensure high precision and high efficiency of the entire adding process.

[0023] The specific process is as follows: first, the barreled epoxy resin main agent 01 and curing agent 02 are stored in a storage unit for batch storage, and the epoxy resin main agent 01 and curing agent 02 are preliminarily heated. On the one hand, a constant temperature and dry storage environment is provided for the epoxy resin and curing agent 02 to prevent them from denaturing; on the other hand, the epoxy resin and curing agent 02 are preliminarily heated to relieve the heating pressure in the storage tank, reduce the liquid viscosity and reduce the waste of the epoxy resin when it is removed from the barrel; then, the heating and insulation unit 2 performs secondary heating and insulation on the epoxy resin and curing agent 02 after removing from the barrel to reach the set temperature, and transports them to the metering pumping unit 4 through two flow control units 3 respectively, performs precise flow control and pumping, and adds and mixes them according to a predetermined proportion; and the PLC control system 51 of the operation monitoring unit 5 automatically adjusts and controls the storage unit 1, the heating and insulation unit 2, the flow control unit 3 and the metering pumping unit 4 to realize the fully automatic addition control of storage, pumping, heating and metering in one.

[0024] The device can accurately add epoxy resin according to the mix ratio requirements of epoxy asphalt concrete on steel bridge decks. The error of the added amount can be controlled within a very small range, generally within ±0.5%, thus ensuring the quality stability of epoxy asphalt concrete. For example, in different batches of paving construction, accurate addition control can keep the performance indicators of epoxy asphalt concrete highly consistent, avoiding road quality problems caused by fluctuations in the amount of epoxy resin added.

[0025] The automated addition process does not require frequent manual measurement and addition of epoxy resin, greatly reducing construction time and labor costs. Compared with traditional manual addition methods, construction efficiency can be increased several times. For example, in large-scale steel bridge deck paving projects, the automatic addition device can work continuously and stably, quickly complete the epoxy resin addition task, and shorten the entire paving construction cycle. It is conducive to improving the overall performance of epoxy asphalt concrete, such as adhesion, strength and durability. For example, after the uniformly mixed epoxy asphalt concrete is paved on the steel bridge deck, its internal structure is more uniform and stable, and can better withstand the influence of vehicle loads and environmental factors.

[0026] Due to precise metering and control, excessive addition of epoxy resin is avoided, reducing material waste. At the same time, the closed storage, transportation and addition system effectively prevents the leakage and volatilization of epoxy resin, reducing pollution to the environment. For example, in the construction of steel bridges in urban areas or near waters with high environmental protection requirements, the application of this device can better meet environmental protection standards and reduce the impact of construction on the surrounding environment.

[0027] In this embodiment, if Figure 2 As shown, the storage unit 1 includes a heat preservation room 11, a heating resistance wire 12 and a blower 13; The insulation room 11 is used to store the epoxy resin main agent 01 and the curing agent 02. The blower 13 and the heating resistor 12 are arranged on one side of the insulation room 11. The heat generated by the heating resistor 12 is blown into the insulation room 11 in the form of hot air heating by the blower 13, and the stored epoxy resin main agent 01 and the curing agent 02 are preliminarily heated. On the one hand, a constant temperature and dry storage environment is provided for the epoxy resin and the curing agent 02 to prevent them from denaturing; on the other hand, the epoxy resin and the curing agent 02 are preliminarily heated to relieve the heating pressure in the storage tank, reduce the liquid viscosity and reduce the waste when the epoxy resin is taken out of the barrel.

[0028] As a preferred embodiment of the above, Figure 3 As shown, each heating and heat preservation unit 2 includes a glue unloading pool 21, a glue pump 22, a glue storage tank 23 and a first pipeline 26; The glue removal tank 21 is used to receive the epoxy resin main agent 01 or curing agent 02 after being removed from the barrel; The first pipe 26 is used to connect the glue removal pool 21 and the glue storage tank 23. The glue pump 22 is arranged on the first pipe 26 and is used to pump the epoxy resin main agent 01 or the curing agent 02 in the glue removal pool 21 into the glue storage tank 23. A heating coil 24 is provided at the bottom of the glue storage tank 23, and the heating coil 24 is externally connected to a heat-conducting oil furnace (not shown) for secondary heating of the epoxy resin main agent 01 or the curing agent 02 in the glue storage tank 23. Specifically, on the one hand, by providing the heating coil 24 and the heat-conducting oil furnace, the epoxy resin main agent 01 or the curing agent 02 in the glue storage tank 23 can be secondary heated to ensure the temperature stability of the material during the addition process. The high viscosity problem of the epoxy resin or the curing agent 02 caused by the low temperature is avoided, the fluidity of the material is improved, and the accuracy of the measurement is ensured; on the other hand, the combination of the heating coil 24 and the glue pump 22, combined with the automatic control system, greatly reduces manual intervention, improves the automation level of the entire device, reduces labor costs, and improves work efficiency.

[0029] Wherein, each heating and heat preservation unit 2 further includes a circulation pipeline 27; A glue pump 22 is provided on the circulation pipe 27. One end of the circulation pipe 27 is connected to the bottom of the glue tank 23, and the other end is connected to the top of the glue tank 23. The circulation pipe 27 is used to circulate the epoxy resin main agent 01 or the curing agent 02 in the glue tank 23, thereby reducing the temperature gradient in the glue tank 23 and ensuring uniform heating and temperature stability of the stored liquid. Specifically, since the heating coil 24 is usually located at the bottom of the glue tank 23, it is easy to form a temperature gradient without circulation, resulting in too high a bottom temperature and a low top temperature. Through the design of the circulation pipe 27, the temperature difference in the glue tank 23 can be effectively reduced, avoiding the adverse effects of the temperature gradient on the viscosity and performance of the epoxy resin, thereby ensuring the stability and uniformity of the material. By setting the circulation pipe 27 and the glue pump 22, the epoxy resin main agent 01 or the curing agent 02 in the glue tank 23 can be effectively circulated, avoiding the problem of uneven temperature caused by the position of the heating coil 24.

[0030] As a preferred embodiment of the above, a liquid level float 25 is provided on the glue storage tank 23 to display the liquid level of the epoxy resin main agent 01 or the curing agent 02 in the glue storage tank 23; The heat transfer oil furnace, the glue pump 22 and the liquid level float 25 are all connected to the PLC control system 51. The temperature and liquid level of the epoxy resin main agent 01 or the curing agent 02 in the glue storage tank 23 are integratedly controlled by the PLC control system 51 to ensure accurate management of the liquid level and temperature. By setting the liquid level float 25 in the glue storage tank 23, the liquid level of the epoxy resin main agent 01 or the curing agent 02 is displayed in real time to ensure accurate acquisition of the liquid level information. The PLC control system 51 performs integrated control of the liquid level and can adjust the addition process in time to prevent metering errors or material waste caused by abnormal liquid levels. The connection between the heat transfer oil furnace and the PLC control system 51 realizes accurate control of the temperature of the epoxy resin main agent 01 or the curing agent 02 in the glue storage tank 23. Stable temperature conditions help maintain the fluidity and reaction performance of the material and improve the stability and reliability of the addition process.

[0031] In this embodiment, if Figure 4 As shown, the flow control unit 3 includes a second pipeline 31 and a glue pump 22, a flow restrictor 32 and a flow meter 33 which are sequentially arranged on the second pipeline 31; One end of the second pipeline 31 is connected to the heating and heat preservation unit 2, and the other end is connected to the metering pumping unit 4, and is used to transport the epoxy resin main agent 01 or the curing agent 02 from the heating and heat preservation unit 2 to the metering pumping unit 4; The flow limiter 32 is arranged on the glue pump 22 to limit the liquid flow in the second pipe 31. The flow meter 33 is used to test the liquid flow in the second pipe 31 and to feed back data to the PLC control system 51 to adjust and precisely control the liquid flow in real time. The normal operation of the flow limiter 32 can gradually reduce the flow to 0 after the metering reaches 50%. Compared with the case without the flow limiter 32, the flow in the pipe is almost 0 after the metering reaches the target value, which reduces the metering error caused by the viscosity of the liquid after the valve is closed. Specifically, Figure 5 As shown, a schematic diagram of the flow control by the flow restrictor 32 in the second pipe 31, assuming that the target amount we need is 10KG, before the flow restrictor 32 is opened, the flow rate is constant, when it reaches 5KG, the flow restrictor 32 opens, and the flow rate decreases in a curve, when the flow of the second pipe 31 is 0, at this time, there is no epoxy resin main agent 01 or curing agent 02 remaining in the second pipe 31, and the epoxy resin main agent 01 or curing agent 02 flowing into the metering pumping unit 4 just reaches the set target amount of 10KG. Compared with the traditional system without the flow restrictor 32, the flow control mechanism of the present invention can significantly reduce the metering error after the valve is closed due to the viscosity of the liquid, improve the metering accuracy, and improve the accuracy of the metering ratio of the epoxy resin main agent 01 and the curing agent 02.

[0032] Through real-time detection by the flow meter 33 and data feedback to the PLC control system 51, the system can automatically adjust according to the actual flow change. When the metering is close to the target value, the flow limiter 32 is opened to gradually reduce the flow, ensuring that the epoxy resin main agent 01 or curing agent 02 that finally flows into the metering pumping unit 4 accurately matches the set target amount, thereby improving the stability and consistency of the addition.

[0033] Among them, the second pipeline 31 is also provided with a check valve 34, which is used to prevent the epoxy resin main agent 01 or the curing agent 02 in the metering pumping unit 4 from flowing back. Specifically, the check valve 34 effectively prevents the epoxy resin main agent 01 or the curing agent 02 from flowing back in the metering pumping unit 4, ensures the unidirectional flow of the liquid, helps to avoid the metering error caused by the reflux of the liquid, and ensures the accurate addition of the epoxy resin and the curing agent 02.

[0034] As a preferred embodiment of the above, Figure 6 As shown, the metering pumping unit 4 includes a metering tank 41, a mixing tank 42, a hanging weighing sensor 45 and a first air valve 46; Two metering tanks 41 are arranged above the stirring tank 42, and the outlets of the metering tanks 41 are connected to the inlet of the stirring tank 42, for conveying the epoxy resin main agent 01 or the curing agent 02 to the stirring tank 42; A stirring paddle 43 is provided in the stirring tank 42, and the stirring paddle 43 is connected to an external stirring motor 44, and is used to stir and mix the epoxy resin main agent 01 and the curing agent 02; Two hanging weighing sensors 45 are respectively arranged on the two metering tanks 41 to weigh the epoxy resin main agent 01 or curing agent 02 entering the mixing tank 42 to ensure accurate measurement; Multiple first air valves 46 are respectively arranged at the outlets of the two metering tanks 41. The signals of the first air valve 46 and the hanging weighing sensor 45 are fed back to the PLC control system 51. When the weight reaches a preset value, the PLC control system 51 sends a stop signal and feeds it back to the first air valve 46. The first air valve 46 is closed, and the feeding of the epoxy resin main agent 01 or the curing agent 02 stops.

[0035] By setting up a hanging weighing sensor 45, the weight of the epoxy resin main agent 01 or the curing agent 02 entering the mixing tank 42 can be accurately monitored to ensure that the epoxy resin main agent 01 and the curing agent 02 added each time reach the set ratio, thereby improving the accuracy of addition and the consistency of the product.

[0036] The PLC control system 51 automatically adjusts according to the signal from the weighing sensor to ensure that when the epoxy resin main agent 01 or the curing agent 02 reaches a predetermined weight, the first air valve 46 automatically closes and stops feeding. This automated control process greatly reduces human operation errors and improves metering accuracy and production efficiency.

[0037] The stirring blade 43 and the stirring motor 44 in the stirring tank 42 work together to ensure that the epoxy resin main agent 01 and the curing agent 02 are fully mixed after addition, avoiding quality fluctuations caused by uneven mixing, and ensuring the uniformity and stability of the mixture. Through the precise metering and control system, not only the production efficiency is improved, but also excessive addition and material waste are avoided. The precise control of the first air valve 46 reduces the unnecessary addition caused by equipment failure or unstable flow, ensuring the precise dosage of each batch of epoxy resin and curing agent 02.

[0038] A second air valve 47 is also provided on the second pipeline 31 , and the second air valve 47 is connected to the PLC control system 51 for controlling the opening and closing of the second air valve 47 , thereby controlling the opening or closing of the second pipeline 31 .

[0039] In this embodiment, a third pipe 48 is provided at the bottom of the mixing tank 42, and a glue pump 22 is provided on the third pipe 48 for pumping the mixed epoxy resin main agent 01 and curing agent 02 to the subsequent process. After the mixing is completed, the uniformly mixed epoxy resin main agent 01 and curing agent 02 can be quickly transported out, which can effectively reduce the residue of epoxy resin main agent 01 and curing agent 02 in the mixing tank 42, reduce material waste, and improve the material utilization rate of the production process.

[0040] As a preferred embodiment of the above, Figure 7As shown, the operation monitoring unit 5 also includes a field monitoring system 52, a control room monitoring system 53 and an operation room operation platform 54; The monitoring system monitors the material storage unit 1, the heating and heat preservation unit 2, the flow control unit 3 and the metering pumping unit 4 in real time. Through the video recording function, the equipment operation and the production process are recorded in full to ensure the traceability of the production process. Specifically, each rubber position in the equipment is equipped with a monitor to track the rubber position and handle problems in a timely manner. The video has a recording function, and a review and summary can be made after each production is completed. The control room monitoring system 53 is used to centrally monitor the operating status of the entire equipment, including real-time display of the working status, liquid level, and temperature parameters of each unit, and timely issue an alarm signal when an abnormality occurs, so that the operator can make remote or on-site adjustments; The operation room operation platform 54 is used for the interaction between the operator and the equipment, and provides a visual operation interface. The operator can adjust the parameters of each unit in real time through the platform, view the production data, and perform manual control and settings through the touch screen or other input devices, so as to ensure the efficient and stable operation of the equipment.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-precision fully automatic metering and adding device for epoxy resin, characterized in that: include: A material storage unit, a heating and heat preservation unit, a flow control unit, a metering pumping unit and an operation monitoring unit are arranged in sequence; The material storage unit is used to store the epoxy resin main agent and the curing agent, and preliminarily heat the stored epoxy resin main agent and the curing agent to stabilize the storage temperature; The two heating and heat preservation units are used to store the epoxy resin and curing agent after being transported out of the storage unit and removed from the barrel, and to perform secondary heating on the stored epoxy resin main agent or curing agent; The two flow control units are respectively used to accurately control the flow of the epoxy resin and the curing agent in the heating and heat preservation unit; The metering pumping unit is used to accurately pump the epoxy resin and curing agent in the flow control unit, and add and mix them in a predetermined proportion; The operation monitoring unit includes a PLC control system, which automatically adjusts and controls the material storage unit, the heating and insulation unit, the flow control unit and the metering pumping unit, and monitors the operating status, liquid level, temperature and flow parameters of the device in real time.

2. The high-precision fully automatic metering and adding device for epoxy resin according to claim 1, characterized in that: The material storage unit includes a heat preservation room, a heating resistance wire and a blower; The heat preservation room is used to store epoxy resin main agent and curing agent. The blower and the heating resistance wire are arranged on one side of the heat preservation room. The heat generated by the heating resistance wire is blown into the heat preservation room in the form of hot air heating by the blower to preliminarily heat the stored epoxy resin main agent and curing agent.

3. The high-precision fully automatic metering and adding device for epoxy resin according to claim 1, characterized in that: Each of the heating and heat preservation units comprises a glue unloading pool, a glue pump, a glue storage tank and a first pipeline; The glue removal tank is used to receive the epoxy resin main agent or curing agent after being removed from the barrel; The first pipe is used to connect the glue removal pool and the glue storage tank, and the glue pump is arranged on the first pipe, and is used to pump the epoxy resin main agent or curing agent in the glue removal pool into the glue storage tank; A heating coil is provided at the bottom of the glue storage tank, and the heating coil is externally connected to a heat-conducting oil furnace for secondary heating of the epoxy resin main agent or curing agent in the glue storage tank.

4. The high-precision fully automatic metering and adding device for epoxy resin according to claim 3, characterized in that: Each of the heating and heat preservation units also includes a circulation pipeline; The circulation pipeline is provided with a glue pump, one end of which is connected to the bottom of the glue storage tank, and the other end is connected to the top of the glue storage tank, so as to circulate the epoxy resin main agent or curing agent in the glue storage tank.

5. The high-precision fully automatic metering and adding device for epoxy resin according to claim 3, characterized in that: The glue storage tank is provided with a liquid level float for displaying the liquid level of the epoxy resin main agent or curing agent in the glue storage tank; The thermal oil furnace, the glue pump and the liquid level float are all connected to the PLC control system, and the temperature and liquid level of the epoxy resin main agent or curing agent in the glue storage tank are integratedly controlled by the PLC control system.

6. The high-precision fully automatic metering and adding device for epoxy resin according to claim 1, characterized in that: The flow control unit comprises a second pipeline and a glue pump, a flow restrictor and a flow meter which are sequentially arranged on the second pipeline; One end of the second pipeline is connected to the heating and heat preservation unit, and the other end is connected to the metering pumping unit, and is used to transport the epoxy resin main agent or curing agent from the heating and heat preservation unit to the metering pumping unit; The flow limiter is arranged on the glue pump to limit the liquid flow in the second pipeline. The flow meter is used to test the liquid flow in the second pipeline and feed back data to the PLC control system to adjust and accurately control the liquid flow in real time.

7. The high-precision fully automatic metering and adding device for epoxy resin according to claim 6, characterized in that: The second pipeline is also provided with a check valve, and the check valve is used to prevent the epoxy resin main agent or curing agent in the metering pumping unit from flowing back.

8. The high-precision fully automatic metering and adding device for epoxy resin according to claim 1, characterized in that: The metering pumping unit includes a metering tank, a stirring tank, a hanging weighing sensor and a first air valve; The two metering tanks are arranged above the stirring tank, and the outlets of the metering tanks are connected to the inlet of the stirring tank, so as to transport the epoxy resin main agent or the curing agent to the stirring tank; The stirring tank is provided with a stirring blade, which is connected to an external stirring motor and is used to stir and mix the epoxy resin main agent and the curing agent; The two hanging weighing sensors are respectively arranged on the two metering tanks, and are used to weigh the epoxy resin main agent or curing agent entering the mixing tank; Multiple first air valves are respectively arranged at the outlets on the two metering tanks. The signals of the first air valve and the suspended weighing sensor are fed back to the PLC control system. When the weight reaches a preset value, the PLC control system sends a stop signal and feeds it back to the first air valve. The first air valve is closed, and the feeding of the epoxy resin main agent or the curing agent stops.

9. The high-precision fully automatic metering and adding device for epoxy resin according to claim 8, characterized in that: A third pipeline is provided at the bottom of the stirring tank, and a glue pump is provided on the third pipeline for pumping the mixed epoxy resin main agent and curing agent to the subsequent process.

10. The high-precision fully automatic metering and adding device for epoxy resin according to claim 1, characterized in that: The operation monitoring unit also includes a field monitoring system, a control room monitoring system and an operation room operation platform; The monitoring system monitors the material storage unit, the heating and heat preservation unit, the flow control unit and the metering pumping unit in real time, and records the equipment operation and production process in full through the video recording function to ensure the traceability of the production process; The control room monitoring system is used to centrally monitor the operating status of the entire equipment, including real-time display of the working status, liquid level, and temperature parameters of each unit, and timely issue an alarm signal when an abnormality occurs; The operating room operating platform is used for the interaction between operators and equipment and provides a visual operating interface.

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