Control method of double-component epoxy resin automatic metering, adding and mixing device

Abstract

The invention discloses a control method of a double-component epoxy resin automatic metering, adding and mixing device in the field of automatic production, and the control method comprises the following steps: a control system calculates the single-disc adding amount of a component A and a component B according to the single-disc production amount and the adding ratio of an asphalt station; according to the single-disc adding amount, the metering cylinder discharges materials into the stirring cylinder; when the reduction amount in the metering cylinder reaches the single-disc adding amount, discharging is stopped; if the materials in the metering cylinder meet the feeding condition, the metering cylinder is started for feeding, otherwise, the metering cylinder is not started; starting a stirrer in the stirring drum, and uniformly stirring; according to a feeding signal of an asphalt station, the stirring drum feeds materials into the stirring pot, and when metering in the stirring drum is zero, feeding is stopped; according to the control method provided by the invention, the materials are accurately discharged into the stirring barrel by monitoring the metering in the metering barrel, and the material quantity in the metering barrel is monitored in real time, so that the discharging quantity and the feeding quantity of the materials in the metering barrel are accurately controlled, continuous automatic production is realized, and the problems of low manual discharging precision and low safety are solved.

Description

Technical Field

[0001] The invention relates to the field of mixing control methods, and in particular to a control method for a two-component epoxy resin automatic metering and adding mixing device. Background Art

[0002] Epoxy resin is a polymer with a high molecular structure and excellent bonding properties and chemical stability. Curing agent is a substance used to initiate the curing reaction of epoxy resin, turning it from liquid to solid. In specific applications, in order to obtain the best bonding effect and curing speed, it is necessary to mix adhesives in different proportions, which requires the addition device to have precise metering function.

[0003] In view of the excellent bonding properties of epoxy resin, epoxy resin is usually added to the asphalt mixture when paving steel bridge decks, road wear layers, and super-heavy traffic roads with high performance requirements, thereby changing the thermoplastic properties of asphalt and making epoxy asphalt have very excellent characteristics in road paving: high strength, high stiffness, good flexibility; excellent fatigue resistance; good interlayer bonding ability; good temperature stability and good corrosion resistance.

[0004] In the existing two-component epoxy resin adding device (two components, i.e., component A epoxy resin, component B curing agent), there is no mature device and control method for the transportation, metering, mixing, etc. of epoxy resin and curing agent, which can cooperate with the continuous and automated production of asphalt mixture. Most of the devices basically rely on manual weighing, and use a handheld mixer to mix and add. This will affect the quality of epoxy asphalt due to inaccurate metering, and secondly, it cannot guarantee the continuity of the mixing process, and thirdly, it takes up labor costs and is prone to production safety problems. Summary of the invention

[0005] The object of the present invention is to provide a control method for a two-component epoxy resin automatic metering and adding mixing device to realize the continuous automatic processing, production and supply of materials in an asphalt station.

[0006] In order to solve the above technical problems, the following technical solutions are adopted:

[0007] The present invention provides a control method for a two-component epoxy resin automatic metering and adding mixing device, comprising the following steps:

[0008] The control system calculates the single-disk addition amount of component A and component B according to the single-disk production volume and addition ratio of the asphalt station;

[0009] According to the amount added per single plate, the discharge butterfly valve is opened, and the metering cylinder discharges the material into the mixing cylinder;

[0010] When the reduced amount in the metering cylinder reaches the added amount of the single plate, the discharge is stopped;

[0011] If the material in the metering cylinder meets the feeding conditions, the metering cylinder will be opened to feed, otherwise it will not be opened;

[0012] Start the agitator in the mixing drum to fully mix component A and component B;

[0013] According to the feeding signal of the asphalt station, the mixing drum feeds the material into the mixing pot of the asphalt station, and when the metering in the mixing drum returns to zero, the feeding is stopped;

[0014] Wherein, the metering cylinder includes a component A metering cylinder and a component B metering cylinder.

[0015] Optionally, according to the formula: M A =M 单 ×P A and M B =M 单 ×P B , the single-disk addition amount of component A is calculated to be M A , the single-disk addition amount of component B is M B ;

[0016] Among them, M 单 Asphalt station single disc production, P A Adding ratio for component A, P B Add proportions for component B.

[0017] Optionally, the feeding conditions of the component A metering cylinder are: 计A ≤M A , the feeding condition of the component B metering cylinder is: M 计B ≤M B ;

[0018] Among them, M 计A is the measurement of component A in the component A measuring cylinder, M 计B It is used for measuring component B in component B measuring cylinder.

[0019] Optionally, during the feeding process of the metering cylinder, the material measurement in the metering cylinder is obtained in real time. When the real-time measurement M of the metering cylinder of component A is 实时A Meet M 实时A ≤M 上限A If the conditions are met, continue to feed, otherwise stop feeding. When the real-time metering M of the metering cylinder of component B 实时B Meet M 实时B ≤M 上限B When the conditions are met, continue feeding, otherwise stop feeding;

[0020] Among them, M 上限A M is the preset upper capacity limit of the measuring cylinder of component A. 上限B It is the preset upper capacity limit of the component B metering cylinder.

[0021] Optionally, the single-dish production capacity of the asphalt station is determined according to the capacity of the mixing pot of the asphalt station, the added ratio is determined according to the material demand of the asphalt station production, and the single-dish production capacity of the asphalt station and the added ratio are input manually.

[0022] Optionally, when the feeding signal is a continuous signal, after the feeding is completed, after receiving the mixing drum discharge butterfly valve closed signal, the metering drum starts the next round of discharge.

[0023] Optionally, the method further includes: a control system detecting the ambient temperature, and when the ambient temperature is lower than a set temperature value, starting the electric heating system to heat the pipes in the mixing device.

[0024] Optionally, the agitator in the mixing drum is turned on when the metering drum discharges materials into the mixing drum, and is turned off when the mixing drum feeds materials into the mixing pot of the asphalt station.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In the control method provided by the present invention, the material is accurately discharged into the mixing drum by monitoring the metering in the metering cylinder. After the discharge is completed, the metering in the metering cylinder is used to determine whether the material is loaded. By real-time monitoring the amount of material in the metering cylinder, the discharge and loading amounts of the internal material are accurately controlled to achieve continuous automated production and avoid the low accuracy and safety issues of manual discharge.

[0027] 2. In the control system provided by the present invention, the agitator is turned on to stir the material when the metering cylinder is discharging the material. After the discharging is completed, the material is fed into the stirring pot according to the feeding information. When feeding, the agitator is turned off to avoid the influence of the agitator on the feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 2 is a schematic diagram of the structure of a mixing device in an embodiment of the present invention;

[0029] Figure 2 is an overall schematic diagram of a control method flow chart in an embodiment of the present invention;

[0030] Figure 3 It is one of the partial schematic diagrams of the flow chart of the control method in the embodiment of the present invention;

[0031] Figure 4 This is the second partial schematic diagram of the flow chart of the control method in the embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Feeding system, 2. Measuring system, 3. Insulation system, 4. Mixing system, 5. Discharging system. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use.

[0035] Example 1

[0036] This embodiment provides a control method for a two-component epoxy resin automatic metering and adding mixing device, comprising the following steps:

[0037] The control system calculates the single-disk addition amount of component A and component B according to the single-disk production volume and addition ratio of the asphalt station;

[0038] According to the single-disk addition amount, the metering cylinder discharges the material into the mixing cylinder; when the reduction amount in the metering cylinder reaches the single-disk addition amount, the discharge is stopped;

[0039] If the material in the metering cylinder meets the feeding conditions, the metering cylinder will be opened to feed, otherwise it will not be opened;

[0040] Start the agitator in the mixing drum to fully mix component A and component B;

[0041] According to the feeding signal of the asphalt station, the mixing drum feeds the material into the mixing pot of the asphalt station, and when the metering in the mixing drum returns to zero, the feeding is stopped;

[0042] like Figure 1 As shown, the control method is applied to a mixing device to realize continuous automated production, wherein the mixing device comprises a feeding system 1, a metering system 2, a heat preservation system 3, a stirring system 4 and a discharging system 5, wherein the feeding system 1 comprises a feeding butterfly valve and a storage tank for storing components; the metering system 2 comprises a component A metering cylinder and a component B metering cylinder; the stirring system 4 comprises a stirring cylinder and a stirrer, and the discharging system 5 comprises a metering cylinder discharging butterfly valve and a stirring cylinder discharging butterfly valve.

[0043] By real-time monitoring of the material in the metering cylinder, the start and stop of feeding and discharging can be controlled. By real-time monitoring of the material in the mixing cylinder, the start and stop of feeding can be controlled, thereby realizing precise and continuous automated production. After one discharge, the material in the metering cylinder is judged whether it meets the feeding conditions to ensure that during the discharge process, the material in the metering cylinder is sufficient for the next discharge.

[0044] Example 2

[0045] This embodiment provides a control method for a two-component epoxy resin automatic metering and adding mixing device based on Embodiment 1, except that:

[0046] It also includes: the control system detects the ambient temperature, and when the ambient temperature is lower than the set temperature value, the electric heating system is started to heat the pipes in the device to ensure the smoothness of loading, unloading and feeding.

[0047] The single-disk production volume and addition ratio of the asphalt station are determined according to the mixing pot capacity of the asphalt station and the asphalt production requirements. The single-disk production volume and addition ratio of the asphalt station are manually input into the system terminal of the mixing device.

[0048] The materials on the metering cylinders of component A and component B are monitored in real time, and the respective metering amounts in the metering cylinders of component A and component B are compared with the single-disc addition amounts of component A and component B; the following takes component A as an example:

[0049] When the amount of component A in the component A metering cylinder is less than the amount added in a single plate, the system detects whether the discharge butterfly valve on the component A metering cylinder is fully closed. After the discharge butterfly valve is fully closed, the component's loading butterfly valve is opened to load material into the component A metering cylinder. When the amount of material in the component A metering cylinder is greater than the upper limit value set for the component A metering cylinder, the component A loading butterfly valve is closed to complete the loading of component A.

[0050] When the metering cylinder discharges materials into the mixing cylinder, determine whether the mixing cylinder discharge butterfly valve is fully closed. After fully closed, open the metering cylinder discharge butterfly valve, turn on the agitator, and mix component A and component B. At the same time, the metering cylinder uses the reduction metering to determine whether the reduction in the material in the component A metering cylinder and the component B metering cylinder reaches the single-disc addition amount of component A and component B. When the material in the component A metering cylinder meets the above conditions, the discharge butterfly valve on the component A metering cylinder can be closed separately, or when the material in the component B metering cylinder meets the above conditions, the discharge butterfly valve on the component B metering cylinder can be closed separately to complete the discharge of component A and component B. After the metering cylinder discharge is completed, reset the mixing cylinder discharge mark, reset the metering cylinder discharge mark, and wait for the asphalt station feeding signal.

[0051] According to the feeding signal of the asphalt station, the system opens the mixing drum discharge butterfly valve and feeds the mixing pot in the asphalt station. When the feeding is turned on, it is necessary to ensure that the discharge butterfly valve is closed and the agitator is turned off. When the metering in the mixing drum returns to zero, close the mixing drum discharge butterfly valve to complete the feeding.

[0052] After the metering cylinder is discharged, the amount of material in the metering cylinder is compared with the corresponding single-disc addition amount. When the material in one or both metering cylinders is less than the single-disc addition amount, the corresponding metering cylinder feeding butterfly valve is opened to feed the material into the metering cylinder. During feeding, the material in the metering cylinder is monitored in real time. When the material reaches the preset upper limit, the feeding is stopped.

[0053] During the feeding process of the metering drum, the mixing drum can stir the incoming material evenly. After stirring evenly, the material is fed into the mixing pot according to the feeding signal of the asphalt station. During the feeding process of the mixing drum, the agitator in the mixing drum is closed to prevent the vortex generated by the agitator during stirring from affecting the discharge of the material.

[0054] The metering cylinder discharges the next round of materials into the mixing cylinder. During the next round of discharge, it is necessary to ensure that the mixing cylinder discharge butterfly valve and the metering cylinder loading butterfly valve are closed.

[0055] like Figure 2 As shown, this embodiment takes the completion of feeding into the stirring pot as an example and includes the following steps:

[0056] The order information obtained from the asphalt station is input into a computer or a touch screen or other input device, and the control system obtains the order information set on the input device. The order information includes the single-plate production volume of the asphalt station (i.e. the production volume of each mixing pot of the asphalt station) M 单 The addition ratios of component A (epoxy resin) and component B (curing agent) are P A , P B .

[0057] According to the following formula, the single-plate addition amount of component A and component B is calculated as M respectively. A 、M B :

[0058] M A =M 单 ×P A M B =M 单 ×P B

[0059] After the mixing device is installed, the two measuring cylinder scales are calibrated so that they can measure the real-time weight M of component A and component B in the measuring cylinder in real time. 实时A 、M 实时B .

[0060] To prevent the metering cylinder from overflowing when loading, the system sets the storage upper limit of component A and component B metering cylinder to M. 上限A 、M 上限B When the mixing device is initially started, the control system detects the closed position signal of the discharge butterfly valves under the two metering cylinders and then starts the delivery pump and the loading butterfly valve to deliver the materials from the storage tanks of component A and component B to their respective metering cylinders. The real-time judgment conditions of the control system are:

[0061] M 实时A ≤M 上限A M 实时B ≤M 上限B

[0062] When the judgment condition is not met, the feeding butterfly valve is immediately closed, and the final weighing real-time value of the metering cylinder is assigned to the material value M of the metering cylinder. 计A 、M 计B :

[0063] M 计A = M 实时A M 计B = M 实时B

[0064] When the two metering cylinders are filled with materials, and the materials in the metering cylinders meet the following conditions:

[0065] M 计A ≥M A M 计B ≥M B

[0066] The production of the mixing plant begins.

[0067] The control system opens the discharge butterfly valves under the two metering cylinders to discharge the material into the mixing cylinder, and at the same time determines whether the following conditions are met:

[0068] M 计A -M 实时A ≤M A M 计B -M 实时B ≤M B

[0069] When the above conditions are not met, close the discharge butterfly valve of the corresponding metering cylinder and stop discharging.

[0070] By using the reduction metering, it is determined whether the amount of material reduction in the metering cylinder has reached the single-disc addition amount of component A and component B. If the judgment condition is not met, the corresponding discharge butterfly valve is immediately closed, and the corresponding discharge completion flag of component A or component B is set. The system assigns the final weighing real-time value to the metering cylinder material value M 计A 、M 计B :

[0071] M 计A = M 实时A M 计B = M 实时B

[0072] After receiving the discharge completion mark of component A or component B, the control system immediately detects the corresponding metering cylinder material value M 计A or M 计B Whether the following judgment conditions are met for the amount of addition for the next batch of production:

[0073] M 计A ≤M A M 计B ≤M B

[0074] When the condition is judged as yes, it means that the material in the metering cylinder is insufficient for the next batch of production. After detecting the closed signal of the discharge butterfly valve below the metering cylinder, the control system immediately opens the corresponding feeding butterfly valve to feed the material into the metering cylinder. The feeding process is the same as above. When the condition is judged as no, it means that there is enough material in the metering cylinder. At this time, you only need to wait for the mixing drum discharge completion mark and the mixing drum discharge butterfly valve closed signal to prepare for the next batch of discharge.

[0075] When the control system opens the discharge butterfly valve below the metering cylinder, the agitator on the mixing cylinder is started to fully mix component A and component B.

[0076] When the control system detects the discharge completion marks of component A and component B at the same time, it means that both component A and component B have been discharged. The control system can reset the discharge completion marks of component A and component B and the discharge completion mark of the mixing drum, and the device will wait for the feeding signal from the asphalt station while mixing.

[0077] When receiving the feeding signal from the asphalt station, the control system opens the discharge butterfly valve under the mixing drum to feed the material into the mixing pot of the asphalt station. When the discharge butterfly valve is opened, the discharge delay starts, and the mixing drum weighing sensor also starts real-time measurement. When the discharge delay time is up and the real-time measurement value of the mixing drum is M 实时筒 When it returns to zero, close the discharge butterfly valve and set the mixing drum discharge completion mark at the same time.

[0078] After waiting for the mixing drum discharge completion mark and the mixing drum discharge butterfly valve closed signal, the metering drum starts the next round of discharge.

[0079] When opening the discharge butterfly valve below the mixing drum, stop the agitator to prevent the vortex generated by the agitator from affecting the discharge.

[0080] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0081] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A control method for a two-component epoxy resin automatic metering and mixing device, characterized in that: The following steps are involved: The control system calculates the single-disk addition amount of component A and component B according to the single-disk production volume and addition ratio of the asphalt station; According to the amount added per single plate, the discharge butterfly valve is opened, and the metering cylinder discharges the material into the mixing cylinder; When the reduced amount in the metering cylinder reaches the added amount of the single plate, the discharge is stopped; If the material in the metering cylinder meets the feeding conditions, the metering cylinder will be opened to feed, otherwise it will not be opened; Start the agitator in the mixing drum to fully mix component A and component B; According to the feeding signal of the asphalt station, the mixing drum feeds the material into the mixing pot of the asphalt station, and when the metering in the mixing drum returns to zero, the feeding is stopped; Wherein, the metering cylinder includes a component A metering cylinder and a component B metering cylinder.

2. The control method of the two-component epoxy resin automatic metering and mixing device according to claim 1, characterized in that: According to the formula: M A =M 单 ×P A and M B =M 单 ×P B , the single-disk addition amount of component A is calculated to be M A The amount of component B added per plate is M B ; Among them, M 单 Asphalt station single disc production, P A Adding ratio for component A, P B Add proportions for component B.

3. The control method of the two-component epoxy resin automatic metering and mixing device according to claim 2, characterized in that: The feeding conditions of the component A metering cylinder are: 计A ≤M A , the feeding condition of the component B metering cylinder is: M 计B ≤M B ; Among them, M 计A is the measurement of component A in the component A measuring cylinder, M 计B It is used for measuring component B in component B measuring cylinder.

4. The control method of the two-component epoxy resin automatic metering and mixing device according to claim 1, characterized in that: During the feeding process of the metering cylinder, the material measurement in the metering cylinder is obtained in real time. 实时A Meet M 实时A ≤M 上限A If the conditions are met, continue to feed, otherwise stop feeding. When the real-time metering M of the metering cylinder of component B 实时B Meet M 实时B ≤M 上限B When the conditions are met, continue feeding, otherwise stop feeding; Among them, M 上限A M is the preset upper capacity limit of the measuring cylinder of component A. 上限B It is the preset upper capacity limit of the component B metering cylinder.

5. The control method of the two-component epoxy resin automatic metering and mixing device according to claim 1, characterized in that: The single-disk production capacity of the asphalt station is determined according to the capacity of the mixing pot of the asphalt station, and the addition ratio is determined according to the material demand of the asphalt station production. The single-disk production capacity of the asphalt station and the addition ratio are input manually.

6. The control method of the two-component epoxy resin automatic metering and mixing device according to claim 1, characterized in that: When the feeding signal is a continuous signal, after the feeding is completed and the mixing drum discharge butterfly valve closes to the full signal, the metering drum starts the next round of discharge.

7. The control method of the two-component epoxy resin automatic metering and mixing device according to claim 1, characterized in that: Also includes: The control system detects the ambient temperature, and when the ambient temperature is lower than a set temperature value, the electric heating system is started to heat the pipes in the mixing device.

8. The control method of the two-component epoxy resin automatic metering and mixing device according to claim 1, characterized in that: The agitator in the mixing drum is turned on when the metering drum discharges materials into the mixing drum, and is turned off when the mixing drum feeds materials into the mixing pot of the asphalt station.

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