Automatic metering, adding and mixing device for bi-component epoxy resin

Abstract

The invention discloses an automatic metering, adding and mixing device for bi-component epoxy resin in the field of automatic mixing, and aims to solve the problem of low automation degree of a mixing device in the prior art. The metering system comprises a metering cylinder and an electronic module, the stirring system comprises a stirring cylinder, a stirrer, a discharging system and a control system, and the control system is used for controlling starting and stopping of the discharging system, the feeding system and the stirring system; the device is provided with the feeding system, the metering system, the discharging system, the stirring system and the control system, the automation degree is high, automatic continuous production can be achieved after the proportion of components is input into a computer of the control system, the metering precision is high, manual cooperation of feeding and metering is not needed on site, automatic production is achieved, and the production efficiency is improved. The conveying pump of the feeding system has a self-circulation function and does not need to be started and stopped frequently.

Description

Technical Field

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

[0002] Asphalt pavement is widely used, but asphalt is a temperature-sensitive material. It has poor stability at high temperatures and is prone to rutting; it becomes brittle and prone to cracking at low temperatures, all of which will affect the performance of asphalt pavement. Adding epoxy resin to asphalt mixture can fundamentally change the thermoplastic properties of asphalt, increase the strength and stability of asphalt mixture, and make it an ideal road construction material for steel bridge deck paving, road wear layer, and super-heavy traffic roads.

[0003] During the epoxy resin addition process, on the one hand, in order to maintain the stability of the epoxy resin during storage and avoid the curing reaction during storage; on the other hand, in order to conveniently prepare adhesives of different proportions with the best bonding performance and appropriate curing speed according to specific application requirements, epoxy resin additives are generally divided into component A and component B, where component A is epoxy resin and component B is curing agent. When necessary, the components AB are measured in proportion, stirred and mixed, and added to the asphalt mixture to obtain the best adhesive effect.

[0004] Adding epoxy resin to asphalt mixture can be divided into cold mixing and hot mixing. In cold mixing, epoxy resin and graded aggregate are mixed evenly at room temperature, and the road can be opened to traffic after 2-4 hours of curing after paving, and the road paving cost is low. In hot mixing, epoxy resin and graded aggregate are mixed evenly at a certain temperature, which has better performance than the product, but this kind of epoxy asphalt mixture has very strict control of temperature and time during use, and the curing cycle after paving is long. In actual production, the mixing method can be selected according to customer needs.

[0005] Chinese patent application number 202021516064.4 discloses a two-component epoxy resin automatic adding and mixing device, which includes an input system, a liquid storage tank, a hand-held vibrating stirrer and an output funnel. The device has a low degree of automation, no automatic feed metering, automatic stirring, automatic discharge, etc., and cannot meet the current requirements for continuous and automatic addition of epoxy resin in asphalt mixtures, and is not very practical.

[0006] The Chinese patent application number 202122791078.8 discloses a two-component epoxy resin automatic adding and mixing device. The device can make the mixing rod rotate in the mixing barrel while also moving up and down in a circular motion, so that the epoxy resin in the barrel is fully mixed. The device only designs the mixing rod, and is not an overall automatic adding device for epoxy resin, and has a low degree of automation.

[0007] In summary, the automatic adding and mixing device for two-component epoxy resin in the prior art has a low degree of automation. Summary of the invention

[0008] The purpose of the present invention is to provide a two-component epoxy resin automatic metering and adding mixing device to realize automatic continuous production with high metering accuracy, and realize automatic production without manual coordination of feeding and metering on site.

[0009] In order to solve the above technical problems, the following technical solutions are adopted: The present invention provides a two-component epoxy resin automatic metering addition mixing device, comprising: A feeding system, comprising a delivery pump, wherein the input end of the delivery pump is connected to the component storage tank, and the output end of the delivery pump is connected to the metering system; The metering system comprises a metering cylinder and an electronic module for obtaining the total weight of the metering cylinder and the liquid therein, wherein one end of the metering cylinder is connected to the delivery pump and the other end is connected to a stirring system for stirring; The stirring system comprises a stirring drum and a stirrer, wherein the stirrer is arranged in the stirring drum, and the top end of the stirring drum is connected to the metering drum; A discharge system, used for conveying the material in the metering drum to the mixing drum, and for conveying the mixed material in the mixing drum to the mixing pot of the asphalt station; A control system, including a PLC and a computer for inputting instructions, wherein the PLC is connected to the feeding system, the metering system, the stirring system and the discharging system; and is used to control the start and stop of the discharging system, the feeding system and the stirring system, wherein the PLC is further connected to the computer; Wherein, the delivery pump has a self-circulation function.

[0010] Optionally, the delivery pump includes a component A delivery pump and a component B delivery pump, the input end of the component A delivery pump is connected to the component A storage tank, and the output end is connected to the component A metering cylinder, and the input end of the component B delivery pump is connected to the component B storage tank, and the output end is connected to the component B metering cylinder.

[0011] Optionally, a component A delivery butterfly valve is provided at one end of the component A delivery pump connected to the component A metering cylinder, and a component B delivery butterfly valve is provided at one end of the component B delivery pump connected to the component B metering cylinder. The component A delivery butterfly valve and the component B delivery butterfly valve are connected to the PLC.

[0012] Optionally, the bottom of the component A metering cylinder is connected to the top of the mixing cylinder through a first pipeline, and the bottom of the component B metering cylinder is connected to the top of the mixing cylinder through a second pipeline, and a component A discharge butterfly valve is provided on the first pipeline, and a component B discharge butterfly valve is provided on the second pipeline; The component A discharge butterfly valve and the component B discharge butterfly valve both have a closed position detection function, and the component A discharge butterfly valve and the component B discharge butterfly valve are connected to the PLC.

[0013] Optionally, the component A discharge butterfly valve and the component B discharge butterfly valve are provided with metering cylinder discharge ports, and the metering cylinder discharge ports are used to discharge the remaining materials in the component A metering cylinder or the component B metering cylinder after the production is completed.

[0014] Optionally, the electronic module includes a first pressure type weighing sensor, three of which are installed on the measuring cylinder, and the three are evenly arranged in a circle on the same horizontal plane of the measuring cylinder. The first pressure type weighing sensor is connected to the PLC, and the PLC reads the total weight of the measuring cylinder and the liquid therein.

[0015] Optionally, the electronic module further comprises an electronic display screen and a visual liquid level gauge for observing the liquid level in the measuring cylinder, the electronic display screen and the visual liquid level gauge are mounted on the outer wall of the measuring cylinder, and the total weight is displayed in real time on the electronic display screen; A second pressure-type weighing sensor and another electronic display screen are provided on the wall of the mixing drum. The second pressure-type weighing sensor is connected to the PLC of the control system. The PLC reads the total weight of the mixing drum and the liquid therein, and displays it on the electronic display screen in real time.

[0016] Optionally, the discharge system includes a feed pipe connecting the mixing drum and the mixing pot, a discharge butterfly valve and a manual butterfly valve, the discharge butterfly valve is arranged on one end of the feed pipe close to the mixing drum, and the manual butterfly valve is arranged on one end of the feed pipe close to the mixing pot.

[0017] Optionally, the connecting pipe between the metering drum and the stirring drum and the connecting pipe between the stirring drum and the stirring pot are both wrapped with electric heating belts, and the heating temperature of the electric heating belts is controlled by a temperature control box.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with a feeding system, a metering system, a discharging system, a stirring system and a control system, with a high degree of automation. Automatic continuous production can be realized after the proportion of the components is input into the computer of the control system, and the metering accuracy is high. There is no need for manual coordination of feeding and metering on site, and automatic production is realized. The conveying pump of the feeding system has a self-circulation function, and there is no need for frequent start and stop.

[0019] 2. The present invention provides electric heating belts between the connecting pipes of each system to heat and insulate the internal materials to adapt to changes in scenes and environments. The present invention can meet different production needs through the combination of complete sets of devices according to customer needs; in addition, the production process of this device is in a fully sealed state to reduce waste and pollution and ensure the safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 3. It is a three-view diagram of a two-component epoxy resin automatic metering and adding mixing device according to an embodiment of the present invention; Figure 2 It is a planar structural diagram of the combined use of multiple two-component epoxy resin automatic metering and adding mixing devices in an embodiment of the present invention.

[0021] Description of reference numerals: 1. Storage tank for component A; 2. Storage tank for component B; 3. Delivery pump for component A; 4. Delivery pump for component B; 5. Delivery butterfly valve for component A; 6. Delivery butterfly valve for component B; 7. Measuring cylinder for component B; 8. Measuring cylinder for component A; 9. Discharging butterfly valve for component B; 10. Discharging butterfly valve for component A; 11. Agitator; 12. Mixing drum; 13. First pressure type weighing sensor; 14. Second pressure type weighing sensor; 15. Discharging port of metering drum; 16. Electronic display screen; 17. Discharging butterfly valve for mixing drum; 18. Escalator; 19. Hot mix adding device; 20. Cold mix adding device. DETAILED DESCRIPTION

[0022] 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. Example 1

[0023] The present embodiment provides a two-component epoxy resin automatic metering addition and mixing device, including a feeding system, a metering system, a stirring system, a discharging system and a control system; the feeding system includes a conveying pump, the metering system includes a metering cylinder and an electronic module, the stirring system includes a stirring cylinder 12 and an agitator 11, and the discharging system is used to transport the material in the metering cylinder to the stirring cylinder 12, and is also used to transport the stirred material in the stirring cylinder 12 to the stirring pot of the asphalt station for use.

[0024] The input end of the delivery pump is connected to the component storage tank, and the output end is connected to the metering cylinder. The material in the component storage tank is delivered to the metering cylinder through the output pump. The total weight of the liquid in the metering cylinder and its internal liquid is obtained through the electronic module in the metering cylinder. When the weight of the liquid in the metering cylinder reaches the preset value, the material in the component storage tank stops being output. One end of the metering cylinder is connected to the delivery pump, and the other end is connected to the mixing cylinder 12 through the discharge system. According to the preset single ratio, the material in the metering cylinder is delivered to the mixing cylinder 12 through the discharge system for stirring. One end of the mixing cylinder 12 is connected to the metering cylinder, and the other end is connected to the stirring pot through the discharge system. The material is stirred evenly in the mixing cylinder 12 by the stirrer 11, and the material after stirring is evenly transported to the stirring pot through the discharge system for use. When the material in the metering cylinder is less than the preset single matching amount, the discharge system is closed, and the feeding system feeds the material into the metering cylinder, and this cycle is repeated. The feeding, stirring and discharging processes are all carried out in a closed space to ensure the stability of the reaction between the materials.

[0025] The control system is connected with the feeding system, the metering system, the stirring system and the discharging system, and the control system controls the start and stop of the feeding system, the discharging system and the stirring system.

[0026] The control system includes a PLC and a computer. The delivery pump, the pressure weighing sensor, the discharge butterfly valve, the agitator 11 and the like in the above system are all connected to the PLC, and the PLC is further connected to the computer.

[0027] The delivery pump has a self-circulation function. During intermittent delivery, there is no need to frequently switch the delivery pump on and off.

[0028] The present invention is provided with a metering system, which can automatically meter and add materials into the mixing drum 12 for stirring. By connecting with the control system, the control system controls the start and stop of the feeding system, and the metering system observes the material amount to achieve accurate feeding. According to the preset single matching amount, the material in the metering drum is transported to the stirring system for stirring. The material is transported completely in a closed state, which increases the stability of the reaction between the materials. Example 2

[0029] like Figure 1 , Figure 2 As shown, this embodiment provides a two-component epoxy resin automatic metering and mixing device, which is different from the embodiment in that: The delivery pump includes a component A delivery pump 3 and a component B delivery pump 4, the component storage tank includes a component A storage tank 1 and a component B storage tank 2, and the metering cylinder includes a component A metering cylinder 8 and a component B metering cylinder 7. The input end of the component A delivery pump 3 is connected to the component A storage tank 1, and the output end is connected to the component A metering cylinder 8. The input end of the component B delivery pump 4 is connected to the component B storage tank 2, and the output end is connected to the component B metering cylinder 7.

[0030] The component A storage tank 1 contains material A, and the component B storage tank 2 contains material B. In this embodiment, material A and material B are epoxy resin and curing agent, and material A and material B may also be other substances.

[0031] The component A delivery butterfly valve 5 is provided at one end of the component A delivery pump 3 connected to the component A metering cylinder 8, and the component B delivery butterfly valve 6 is provided at one end of the component B delivery pump 4 connected to the component B metering cylinder 7. The component A delivery butterfly valve 5 and the component B delivery butterfly valve 6 are connected to the PLC. By controlling the switch of the component A delivery butterfly valve 5 and the component B delivery butterfly valve 6, the delivery of the epoxy resin and the curing agent is controlled.

[0032] The discharge system includes a first pipeline between the component A metering cylinder 8 and the mixing drum 12, a component A discharge butterfly valve 10, a second pipeline between the component B metering cylinder 7 and the mixing drum 12, a component B discharge butterfly valve 9, a feed pipe connecting the mixing drum 12 and the mixing pot, a discharge butterfly valve on the feed pipe and a manual butterfly valve. The discharge butterfly valve is arranged on one end of the feed pipe close to the mixing drum 12, and the manual butterfly valve is arranged on one end of the feed pipe close to the mixing pot. The discharge butterfly valve is connected to the control system and controls its switch. The manual butterfly valve can be used when the device is overhauled.

[0033] The bottom of the component A metering cylinder 8 is connected to the top of the mixing drum 12 through a first pipeline, and the bottom of the component B metering cylinder 7 is connected to the top of the mixing drum 12 through a second pipeline. A component A discharge butterfly valve 10 is provided on the first pipeline, and a component B discharge butterfly valve 9 is provided on the second pipeline. The component A discharge butterfly valve 10 and the component B discharge butterfly valve 9 are connected to the control system and their switches are controlled.

[0034] The component A discharge butterfly valve 10 and the component B discharge butterfly valve 9 are both provided with a metering cylinder discharge port 15, which is connected to a waste container. After the production is completed, the metering cylinder discharge port 15 is opened to discharge the remaining materials in the component A metering cylinder 8 and the component B metering cylinder 7.

[0035] An electronic module for obtaining the actual amount of material inside is provided on both the component A metering cylinder 8 and the component B metering cylinder 7. The electronic module includes three first pressure type weighing sensors 13, an electronic display screen 16 and a visual liquid level gauge. The three first pressure type weighing sensors 13 are evenly arranged in a circle on the same horizontal plane of the metering cylinder. The first pressure type weighing sensors 13 are connected to the control system. The weight signal collected by the first pressure type weighing sensors 13 is connected to the PLC of the control system. The PLC can read the total weight of the metering cylinder and the material inside it, and display it in real time on the corresponding display electronic screen 16.

[0036] A second pressure-type weighing sensor 14 and an electronic display screen 16 are installed on the wall of the mixing drum 12. The weight signal collected by the second pressure-type weighing sensor 14 is connected to the control system PLC, which can read the total weight of the mixing drum 12 and the liquid inside, and display it in real time on the corresponding electronic display screen 16. When conveying the stirred material to the mixing pot, the PLC can judge whether the material in the mixing drum 12 has been discharged according to the total weight read, thereby starting and stopping the mixing drum discharge butterfly valve 17 on the conveying pipe.

[0037] An insulation system is also provided, specifically: electric heating belts are wrapped around the first pipeline, the second pipeline and the material conveying pipeline. The heating temperature of the electric heating belts is controlled by a temperature control box. It can adapt to different locations and seasons, insulate the materials in the pipeline, and increase the stability of the reaction between the materials.

[0038] In some embodiments, in actual production, in order to ensure that component A and component B are fully mixed without delaying the production of the asphalt station, two sets of the above devices can be equipped at the same time to work alternately. Similarly, according to customer needs, when the asphalt station has both cold mix and hot mix epoxy resin addition functions, four sets of the above devices can be equipped (different models of epoxy resin and curing agent are used in cold mix and hot mix addition) to meet different production needs.

[0039] When in use, the operator inputs the ratio of epoxy resin and curing agent on the computer, and the PLC calculates the preset single ratio of epoxy resin and curing agent according to the single disk production of the asphalt station. When the PLC controls the discharge butterfly valve 10 of component A and the discharge butterfly valve 9 of component B to discharge into the mixing drum 12, when the reduced metering value in the metering drum 8 of component A reaches the preset single ratio of component A and the reduced metering value in the metering drum 7 of component B reaches the preset single ratio of component B, the PLC controls the discharge butterfly valve 10 of component A and the discharge butterfly valve 9 of component B to close to achieve accurate metering.

[0040] The component A discharge butterfly valve 10 and the component B discharge butterfly valve 9 both have a closed position detection function. When the remaining amount of material in the component A metering cylinder 8 or the component B metering cylinder 7 is less than the preset single proportion, the control system will control the component A conveying butterfly valve 5 or the component B conveying butterfly valve 6 to open after detecting the closed position signal of the component A discharge butterfly valve 10 or the component B discharge butterfly valve 9, and feed the material into the corresponding metering cylinder. When the weight in the corresponding metering cylinder reaches the preset value, the corresponding conveying butterfly valve is closed and the feeding is stopped. During this feeding process, the real-time feeding situation can also be observed through the visual liquid level gauge installed on the metering cylinder to prevent overflow caused by incorrect setting of the upper limit.

[0041] After the PLC receives the feeding signal from the asphalt station, it controls the mixing drum discharge butterfly valve 17 to open and transport the mixed material into the mixing pot. After the second pressure weighing sensor 14 on the mixing drum 12 displays that the weight of the internal liquid is zero, the mixing drum discharge butterfly valve 17 is closed, and the mixing drum discharge butterfly valve 17 outputs a closed position signal. After the PLC receives the closed position signal output by the mixing drum discharge butterfly valve 17, it controls the metering drum component A discharge butterfly valve 10 and component B discharge butterfly valve 9 to discharge the material into the mixing drum 12, preparing for the feeding of the next pot of asphalt mixture.

[0042] When the material stirred in the mixing drum 12 is conveyed to the mixing pot, the weight signal collected by the second pressure weighing sensor 14 is connected to the control system PLC. The PLC can judge whether the material in the mixing drum 12 has been discharged according to the weight, thereby controlling the start and stop of the discharge butterfly valve on the material conveying pipe below the mixing drum 12.

[0043] 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 two-component epoxy resin automatic metering and mixing device, characterized in that: include: A feeding system, comprising a delivery pump, wherein the input end of the delivery pump is connected to the component storage tank, and the output end of the delivery pump is connected to the metering system; The metering system comprises a metering cylinder and an electronic module for obtaining the total weight of the metering cylinder and the liquid therein, wherein one end of the metering cylinder is connected to the delivery pump and the other end is connected to a stirring system for stirring; The stirring system comprises a stirring drum and a stirrer, wherein the stirrer is arranged in the stirring drum, and the top end of the stirring drum is connected to the metering drum; A discharge system, used for conveying the material in the metering drum to the mixing drum, and for conveying the mixed material in the mixing drum to the mixing pot of the asphalt station; A control system, including a PLC and a computer for inputting instructions, wherein the PLC is connected to the feeding system, the metering system, the stirring system and the discharging system; and is used to control the start and stop of the discharging system, the feeding system and the stirring system, wherein the PLC is further connected to the computer; Wherein, the delivery pump has a self-circulation function.

2. The two-component epoxy resin automatic metering and mixing device according to claim 1, characterized in that: The delivery pump comprises a component A delivery pump and a component B delivery pump, wherein the input end of the component A delivery pump is connected to the component A storage tank, and the output end is connected to the component A metering cylinder; the input end of the component B delivery pump is connected to the component B storage tank, and the output end is connected to the component B metering cylinder.

3. The two-component epoxy resin automatic metering and mixing device according to claim 2, characterized in that: The component A delivery butterfly valve is provided at one end of the component A delivery pump connected to the component A metering cylinder, and the component B delivery butterfly valve is provided at one end of the component B delivery pump connected to the component B metering cylinder. The component A delivery butterfly valve and the component B delivery butterfly valve are connected to the PLC.

4. The two-component epoxy resin automatic metering and mixing device according to claim 2, characterized in that: The bottom of the component A metering cylinder is connected to the top of the mixing cylinder through a first pipeline, and the bottom of the component B metering cylinder is connected to the top of the mixing cylinder through a second pipeline. The first pipeline is provided with a component A discharge butterfly valve, and the second pipeline is provided with a component B discharge butterfly valve; The component A discharge butterfly valve and the component B discharge butterfly valve both have a closed position detection function, and the component A discharge butterfly valve and the component B discharge butterfly valve are connected to the PLC.

5. The two-component epoxy resin automatic metering and mixing device according to claim 4, characterized in that: The component A discharge butterfly valve and the component B discharge butterfly valve are provided with metering cylinder discharge ports, and the metering cylinder discharge ports are used to discharge the remaining materials in the component A metering cylinder or the component B metering cylinder after the production is completed.

6. The two-component epoxy resin automatic metering and mixing device according to claim 1, characterized in that: The electronic module includes a first pressure type weighing sensor. Three of the first pressure type weighing sensors are installed on the measuring cylinder. The three first pressure type weighing sensors are evenly arranged in a circle on the same horizontal plane of the measuring cylinder. The first pressure type weighing sensors are connected to the PLC, and the PLC reads the total weight of the measuring cylinder and the liquid therein.

7. The two-component epoxy resin automatic metering and mixing device according to claim 6, characterized in that: The electronic module further comprises an electronic display screen and a visual liquid level gauge for observing the liquid level in the measuring cylinder, the electronic display screen and the visual liquid level gauge are mounted on the outer wall of the measuring cylinder, and the total weight is displayed in real time on the electronic display screen; A second pressure-type weighing sensor and another electronic display screen are provided on the wall of the mixing drum. The second pressure-type weighing sensor is connected to the PLC of the control system. The PLC reads the total weight of the mixing drum and the liquid therein, and displays it on the electronic display screen in real time.

8. The two-component epoxy resin automatic metering and mixing device according to claim 1, characterized in that: The discharging system includes a feeding pipe connecting the mixing drum and the mixing pot, a discharging butterfly valve and a manual butterfly valve. The discharging butterfly valve is arranged on one end of the feeding pipe close to the mixing drum, and the manual butterfly valve is arranged on one end of the feeding pipe close to the mixing pot.

9. The two-component epoxy resin automatic metering and mixing device according to claim 1, characterized in that: The connecting pipe between the metering drum and the mixing drum and the connecting pipe between the mixing drum and the mixing pot are both wrapped with electric heating belts, and the heating temperature of the electric heating belts is controlled by a temperature control box.

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