A fully automatic intelligent two-component road polyurethane metering device

Abstract

The present invention relates to a fully automatic intelligent two-component road polyurethane metering device, which belongs to the technical field of metering devices, and includes: a feed pump A, a shell and tube heat exchanger, a stirring tank, a discharge pump, a metering pump, a feed pump B, a stirrer and a dryer, wherein the discharge ports and feed ports of the feed pump A, the shell and tube heat exchanger, the stirring tank, the discharge pump and the metering pump are sequentially connected in series through a feed pipe; the discharge port of the feed pump B is connected to the feed port of the stirring tank through a feed pipe. The present invention combines the material properties and production process standards of the two-component road polyurethane, and uses the feed pump A and the feed pump B to synthesize a two-component road polyurethane with a certain mixing ratio; then uses a shell and tube heater for heating, which can effectively avoid condensation and blockage of the mixed two-component road polyurethane and improve the fluidity of the two-component road polyurethane; finally, the two-component road polyurethane is quantitatively output by a metering pump, thereby improving the accuracy of the quantitative output of the metering device.

Description

Technical Field

[0001] The invention relates to the technical field of metering devices, and in particular to a fully automatic intelligent two-component road polyurethane metering device. Background Art

[0002] At present, the high-performance green and environmentally friendly material - road polyurethane mixture has entered the stage of promotion and application. However, there is no special metering device for the use and metering of road polyurethane adhesives, and it can only rely on traditional quantitative metering devices. For example, the patent number is: CN115112215A, and the name is: an invention patent for a metering device. The above-mentioned metering device can be used to quantitatively output road polyurethane mixture.

[0003] However, since it is not a special equipment, there are many disadvantages in using it: 1. The metering accuracy of the resin or asphalt metering device is low, the error is large, the metering speed is slow, and the cost performance is low; 2. During the weighing process, due to the high viscosity of road polyurethane, pipeline blockage, pump suffocation and motor burning are prone to occur; 3. There is no constant temperature heat exchange system, which makes it unable to guarantee production tasks normally when the ambient temperature is below 5°C; 4. According to the material characteristics of road polyurethane, the road polyurethane delivery pipeline must be cleaned after each production stoppage. The cleaning process is cumbersome and time-consuming, and a huge waste of manpower and machinery is caused during the cleaning process. The cost of use is high and there is no value in promoting its use.

[0004] Therefore, how to combine the material properties and production process standards of road polyurethane to design a metering device suitable for two-component road polyurethane materials is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0005] The invention provides a fully automatic intelligent two-component road polyurethane metering device, which solves the technical problems of the existing two-component road polyurethane metering device being difficult to clean, easy to be blocked in the pipeline, and easy to suffocate the pump and burn the motor.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: a fully automatic intelligent two-component road polyurethane metering device, comprising: a feed pump A, a shell and tube heat exchanger, a stirring tank, a discharge pump, a metering pump, a feed pump B, a stirrer and a dryer,

[0007] The feed pump A, the shell and tube heat exchanger, the stirring tank, the discharge pump and the discharge port and the feed port of the metering pump are connected in series in sequence through a feed pipe; the discharge port of the feed pump B is connected to the feed port of the stirring tank through a feed pipe; the stirrer is fixed on the stirring tank; and the gas outlet of the dryer is connected to the stirring tank.

[0008] The beneficial effects of the present invention are as follows: combining the material properties and production process standards of the two-component road polyurethane, firstly, using feed pump A and feed pump B to quantitatively deliver component A polyurethane and component B polyurethane into a stirring tank respectively, to synthesize a two-component road polyurethane with a certain mixing ratio; then using a shell and tube heater to heat the component A polyurethane, which can effectively avoid condensation and blockage of the component A polyurethane and the mixed two-component road polyurethane, adapt to various ambient temperatures, and improve the fluidity of the two-component road polyurethane; finally, using a metering pump to quantitatively output the two-component road polyurethane, improve the accuracy of the quantitative output of the metering device, effectively make up for the missing part of accurate metering in the production process of the road polyurethane mixture, and perfectly match various intermittent mixing equipment.

[0009] Based on the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, it also includes a three-way valve A, a three-way valve B, a three-way valve C and a three-way valve D, wherein the three-way valve A is connected to the feed pipe between the discharge port of the feed pump A and the feed port of the tubular heat exchanger; the three-way valve B is connected to the feed pipe between the discharge port of the feed pump B and the feed port of the stirring tank; the three-way valve C is connected to the feed pipe between the discharge port of the stirring tank and the feed port of the discharge pump; the three-way valve D is connected to the feed pipe between the discharge port of the discharge pump and the feed port of the metering pump.

[0011] The above further beneficial effects are: three-way valve A is used to connect between feed pump A and shell and tube heat exchanger, three-way valve B is used to connect between feed pump B discharge port and mixing tank feed port, three-way valve C is used to connect between mixing tank discharge port and discharge pump feed port, three-way valve D is used to connect between discharge pump discharge port and metering pump feed port, and three-way valve A, three-way valve B, three-way valve C and three-way valve D can be used to respectively guide out A component polyurethane, B component polyurethane or two-component polyurethane from the feed pipe, thereby avoiding damage to certain parts in the device and wasting excessive materials.

[0012] Furthermore, it also includes a pipeline heating component, the feed pump A, the three-way valve A, the shell and tube heat exchanger, the stirring tank, the three-way valve C, the discharge pump and the three-way valve D are all double-layer structures and the inner layers are all polyurethane circulation layers for group A. The outer layers of the feed pump A, the three-way valve A, the shell and tube heat exchanger, the stirring tank, the three-way valve C, the discharge pump and the three-way valve D form a closed circulation channel with the pipeline heating component, and heating steam flows in the circulation channel.

[0013] The above further beneficial effect is: by designing the feed pump A, three-way valve A, shell and tube heat exchanger, stirring tank, three-way valve C, discharge pump and three-way valve D as a double-layer structure, and forming a circulation channel for steam to circulate between the outer layer of the feed pump A, three-way valve A, shell and tube heat exchanger, stirring tank, three-way valve C, discharge pump and three-way valve D and the pipeline heating component, on the one hand, the A component polyurethane and the two-component polyurethane can be heated in real time to avoid condensation and blockage of the A component polyurethane or the two-component polyurethane; on the other hand, the steam heat loss can be effectively reduced, and the energy consumption of the device can be reduced.

[0014] Furthermore, it also includes a breathing valve. The top of the mixing tank is provided with a vent hole, and the breathing valve is fixed at the vent hole on the top of the mixing tank.

[0015] A further beneficial effect of the above method is that by fixing the breathing valve at the vent hole on the top of the mixing tank, excessive gas pressure in the mixing tank can be avoided, thereby preventing dangerous accidents.

[0016] Furthermore, the first outlet of the three-way valve D is connected to the feed port of the metering pump and the second outlet of the three-way valve D is connected to the feed port of the stirring tank.

[0017] The above-mentioned further beneficial effect is: by connecting the second discharge port of the three-way valve D with the feed port of the stirring tank, the two-component road polyurethane can circulate between the stirring tank, the three-way valve C, the discharge pump and the three-way valve D after mixing, effectively avoiding solidification and clogging of the two-component road polyurethane.

[0018] Furthermore, it also includes a temperature transmission device, which is fixed on the stirring tank and has a temperature sensing probe extending into the stirring tank.

[0019] Furthermore, it also includes an air compressor, and the air outlet of the air compressor is communicated with the stirring tank.

[0020] Furthermore, the feed pump A, the feed pump B and the metering pump are all weighing metering pumps or flow metering pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of a fully automatic intelligent two-component road polyurethane metering device of the present invention;

[0022] Figure 2 It is a top view structural schematic diagram of a fully automatic intelligent two-component road polyurethane metering device of the present invention;

[0023] Figure 3 The present invention is a schematic diagram of the process of a fully automatic intelligent two-component road polyurethane metering device.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Feed pump A, 2. Shell and tube heat exchanger, 3. Mixing tank, 4. Discharge pump, 5. Metering pump, 6. Feed pump B, 7. Dryer, 8. Air compressor. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0027] like Figure 1 As shown, a fully automatic intelligent two-component polyurethane metering device for road use includes: a feed pump A1, a shell and tube heat exchanger 2, a stirring tank 3, a discharge pump 4, a metering pump 5, a feed pump B6, an agitator and a dryer 7. The discharge ports and feed ports of the feed pump A1, the shell and tube heat exchanger 2, the stirring tank 3, the discharge pump 4 and the metering pump 5 are connected in series in sequence through a feed pipe; the discharge port of the feed pump B6 is connected to the feed port of the stirring tank 3 through a feed pipe; the agitator is fixed on the stirring tank 3; and the gas outlet of the dryer 7 is connected to the stirring tank 3.

[0028] In some specific embodiments, it may also include a three-way valve A, a three-way valve B, a three-way valve C and a three-way valve D. The three-way valve A is connected to the feed pipe between the discharge port of the feed pump A1 and the feed port of the tubular heat exchanger; the three-way valve B is connected to the feed pipe between the discharge port of the feed pump B6 and the feed port of the stirring tank 3; the three-way valve C is connected to the feed pipe between the discharge port of the stirring tank 3 and the feed port of the discharge pump 4; the three-way valve D is connected to the feed pipe between the discharge port of the discharge pump 4 and the feed port of the metering pump 5.

[0029] In some specific embodiments, a pipeline heating component can also be included, wherein the feed pump A1, three-way valve A, shell and tube heat exchanger 2, stirring tank 3, three-way valve C, discharge pump 4 and three-way valve D are all double-layer structures and the inner layers are polyurethane circulation layers for group A. The outer layers of the feed pump A1, three-way valve A, shell and tube heat exchanger 2, stirring tank 3, three-way valve C, discharge pump 4 and three-way valve D form a closed circulation channel with the pipeline heating component, and heating steam flows in the circulation channel.

[0030] In some specific embodiments, the first outlet of the three-way valve D is connected to the feed port of the metering pump 5 and the second outlet of the three-way valve D is connected to the feed port of the stirring tank 3 .

[0031] In some specific embodiments, a breathing valve may also be included. A vent hole is provided on the top of the stirring tank 3 , and the breathing valve is fixed at the vent hole on the top of the stirring tank 3 .

[0032] In some specific embodiments, a temperature transmission device may be further included. The temperature transmission device is fixed on the stirring tank 3 and a temperature sensing probe thereof extends into the stirring tank 3 .

[0033] In some specific embodiments, an air compressor 8 may also be included, and an air outlet of the air compressor 8 is communicated with the stirring tank 3 .

[0034] In some specific embodiments, the feed pump A1, the feed pump B6 and the metering pump 5 can all be weighing metering pumps or flow metering pumps.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic intelligent two-component road polyurethane metering device, characterized in that: The invention comprises: a feed pump A (1), a shell and tube heat exchanger (2), a mixing tank (3), a discharge pump (4), a metering pump (5), a feed pump B (6), a stirrer and a dryer (7), The feed pump A (1), the shell and tube heat exchanger (2), the stirring tank (3), the discharge pump (4) and the metering pump (5) are connected in series with the feed port through a feed pipe; the discharge port of the feed pump B (6) is connected to the feed port of the stirring tank (3) through a feed pipe; the stirrer is fixed on the stirring tank (3); and the gas outlet of the dryer (7) is connected to the stirring tank (3); It also includes a three-way valve A, a three-way valve B, a three-way valve C and a three-way valve D, wherein the three-way valve A is connected to the feed pipe between the discharge port of the feed pump A (1) and the feed port of the shell and tube heat exchanger; the three-way valve B is connected to the feed pipe between the discharge port of the feed pump B (6) and the feed port of the stirring tank (3); the three-way valve C is connected to the feed pipe between the discharge port of the stirring tank (3) and the feed port of the discharge pump (4); and the three-way valve D is connected to the feed pipe between the discharge port of the discharge pump (4) and the feed port of the metering pump (5); It also includes a pipeline heating component, wherein the feed pump A (1), the three-way valve A, the shell and tube heat exchanger (2), the stirring tank (3), the three-way valve C, the discharge pump (4) and the three-way valve D are all double-layer structures, and the inner layer thereof is a polyurethane circulation layer for group A, and the outer layers of the feed pump A (1), the three-way valve A, the shell and tube heat exchanger (2), the stirring tank (3), the three-way valve C, the discharge pump (4) and the three-way valve D form a closed circulation channel with the pipeline heating component, and heating steam flows in the circulation channel; The first outlet of the three-way valve D is connected to the feed port of the metering pump (5), and the second outlet of the three-way valve D is connected to the feed port of the stirring tank (3).

2. A fully automatic intelligent two-component road polyurethane metering device according to claim 1, characterized in that: It also comprises a breathing valve, a vent hole is provided on the top of the stirring tank (3), and the breathing valve is fixed at the vent hole on the top of the stirring tank (3).

3. A fully automatic intelligent two-component road polyurethane metering device according to claim 1, characterized in that: It also comprises a temperature transmission device, which is fixed on the stirring tank (3) and has a temperature sensing probe extending into the stirring tank (3).

4. A fully automatic intelligent two-component road polyurethane metering device according to claim 1, characterized in that: It also includes an air compressor (8), the air outlet of the air compressor (8) being in communication with the stirring tank (3).

5. A fully automatic intelligent two-component road polyurethane metering device according to claim 1, characterized in that: The feed pump A (1), the feed pump B (6) and the metering pump (5) are all weighing metering pumps or flow metering pumps.

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