Water adding device for asphalt foaming

Abstract

The invention discloses a water adding device for asphalt foaming, which relates to the technical field of asphalt production, and comprises a box body, a water tank, a liquid conveying component, a first three-way joint, a second three-way joint, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a return pipeline, a pressure release valve and a controller, the liquid conveying part is arranged at the lower part in the box body; a first control component is arranged on the first pipeline, a second control component is arranged on the second pipeline, a third control component is arranged on the third pipeline, and a fourth control component is arranged on the fourth pipeline; one end of the backflow pipeline is connected with the fourth pipeline and located between the fourth control component and the water adding nozzle, the other end of the backflow pipeline is connected with the bottom of the water tank, and a pressure release valve is arranged on the backflow pipeline. The water adding device for asphalt foaming can ensure the safety of pipelines and liquid conveying parts, and reduces the maintenance frequency and cost of equipment.

Description

Technical Field

[0001] The invention relates to the technical field of asphalt production, in particular to a water adding device for asphalt foaming. Background Art

[0002] Factory-mixed cold recycling technology is a new technology that first crushes and granulates the old pavement structure layer through a milling machine, then transports it to the site for centralized stacking, and uses special factory-mixed recycling equipment to forcibly mix stabilizers (foamed asphalt and cement) in dosages designed according to laboratory mix ratios, new materials (crushed stone or stone chips), milling materials, etc., and transports them to the paver by truck for paving and compaction. The recycled materials are used as the new pavement structure layer, thereby improving the strength of the pavement structure.

[0003] Heated asphalt rapidly foams upon contact with water in the asphalt foaming device. Therefore, water must be added to the device during the foaming process. Existing water-adding devices for asphalt foaming suffer from the problem of easily clogged water nozzles. This obstructed outlet of the water flow from the liquid conveying components can cause a sharp increase in pressure within the water-adding device's pipelines, potentially causing pipeline ruptures and damage to the liquid conveying components due to overload, leading to increased maintenance frequency and costs. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a water adding device for asphalt foaming, which can ensure the safety of pipelines and liquid conveying components and reduce the maintenance frequency and cost of the equipment.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a water adding device for asphalt foaming, comprising a box body, a water tank, a liquid conveying component, a first three-way joint, a second three-way joint, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a return pipeline, a pressure relief valve and a controller, wherein the water tank is arranged at the upper part of the box body, and the liquid conveying component is arranged at the lower part of the box body; a first interface of the first three-way joint is connected to the water inlet of the liquid conveying component, one end of the first pipeline is connected to the second interface of the first three-way joint, and the other end of the first pipeline extends to the outside of the box body and is used to be connected to an external water source, a first control component is provided on the first pipeline, two ends of the second pipeline are respectively connected to the third interface of the first three-way joint and the bottom of the water tank, and a second control component is provided on the second pipeline; a first interface of the second three-way joint is connected to the water inlet of the liquid conveying component, one end of the first pipeline is connected to the second interface of the first three-way joint, and the other end of the first pipeline extends to the outside of the box body and is used to be connected to an external water source, a first control component is provided on the first pipeline, and two ends of the second pipeline are respectively connected to the third interface of the first three-way joint and the bottom of the water tank, and a second control component is provided on the second pipeline; The interface is connected to the water outlet of the liquid delivery component, one end of the third pipeline is connected to the second interface of the second three-way joint, the other end of the third pipeline extends to the outside of the box body, and a third control component is provided on the third pipeline, one end of the fourth pipeline is connected to the third interface of the second three-way joint, the other end of the fourth pipeline extends to the outside of the box body and is used to be connected to the water adding nozzle, and a fourth control component is provided on the fourth pipeline; one end of the return pipeline is connected to the fourth pipeline and is located between the fourth control component and the water adding nozzle, the other end of the return pipeline is connected to the bottom of the water tank, the pressure relief valve is provided on the return pipeline, and the liquid delivery component, the first control component, the second control component, the third control component and the fourth control component are all connected to the controller.

[0007] Preferably, it further includes a water flow sensor, which is arranged on the fourth pipeline and located between the connection between the return pipeline and the fourth pipeline and the water adding nozzle, and the water flow sensor is connected to the controller.

[0008] Preferably, a pressure sensor is further included, which is arranged on the fourth pipeline and located between the connection between the return pipeline and the fourth pipeline and the water flow sensor, and the pressure sensor is connected to the controller.

[0009] Preferably, a pressure gauge is further included, and the pressure gauge is provided on the fourth pipeline and located between the connection between the return pipeline and the fourth pipeline and the fourth control component.

[0010] Preferably, it also includes a liquid level sensor and a water supply device, the liquid level sensor is arranged in the water tank and is used to monitor the liquid level in the water tank, the water supply device is used to supply water to the water tank, and the liquid level sensor and the water supply device are both connected to the controller.

[0011] Preferably, a filter is provided on the second pipeline, and the filter is located between the second control component and the water tank.

[0012] Preferably, a support base is further included, which is arranged at the bottom of the box body, and the liquid conveying component is arranged on the support base.

[0013] Preferably, an opening is provided on the front side of the box body, and a door that can be opened and closed is installed at the opening.

[0014] Preferably, a fixing part is provided at each of the four corners of the bottom of the water tank, and a plurality of supporting parts are provided on the upper inner wall of the box body. Each of the fixing parts is located above a supporting part, and each of the fixing parts and one of the supporting parts are connected through a fixing assembly.

[0015] Preferably, it also includes a base, which includes two bottom support components, and the bottom support component includes a bottom plate and a vibration-damping buffer pad arranged on the bottom plate. A fixing hole is provided at both ends of the bottom plate, and the box body is arranged on the upper part of the vibration-damping buffer pads of the two bottom support components.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The water adding device for asphalt foaming of the present invention comprises a housing, a water tank, a liquid conveying component, a first three-way joint, a second three-way joint, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a return pipeline, a pressure relief valve and a controller, wherein one end of the return pipeline is connected to the fourth pipeline and is located between the fourth control component and the water adding nozzle, the other end of the return pipeline is connected to the bottom of the water tank, and a pressure relief valve is provided on the return pipeline. When water is added, the controller controls the second control component and the fourth control component to be opened, the first control component and the third control component to be closed, and controls the liquid conveying component to be opened, thereby pumping water in the water tank through the second pipeline and the fourth pipeline to the water adding nozzle for spraying. When the water adding nozzle is blocked, the water pressure in the pipeline increases. When the water pressure exceeds the preset pressure of the pressure relief valve, the water flows into the water tank through the return pipeline, thereby avoiding the problem of pipeline bursting caused by the sharp increase in pressure in the pipeline and the damage of the liquid conveying component due to overload, thereby ensuring the safety of the pipeline and the liquid conveying component and reducing the maintenance frequency and cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of a water adding device for asphalt foaming provided by the present invention;

[0020] Figure 2 A side view of a water adding device for asphalt foaming provided by the present invention;

[0021] Figure 3 This is a schematic structural diagram of the bottom support assembly in the water adding device for asphalt foaming provided by the present invention.

[0022] Explanation of the accompanying reference numerals: 100, water adding device for asphalt foaming; 1, box body; 2, water tank; 3, liquid delivery pump; 4, motor; 5, support seat; 6, first three-way joint; 7, second three-way joint; 8, first pipeline; 9, second pipeline; 10, third pipeline; 11, fourth pipeline; 12, first control component; 13, second control component; 14, third control component; 15, fourth control component; 16, return pipeline; 17, pressure relief valve; 18, water flow sensor; 19, pressure sensor; 20, pressure gauge; 21, liquid level sensor; 22, connector; 23, controller; 24, fixing component; 25, support component; 26, fixing bolt; 27, nut; 28, bottom plate; 29, vibration damping cushion; 30, fixing hole; 31, through hole; 32, box door. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The purpose of the present invention is to provide a water adding device for asphalt foaming, which can ensure the safety of pipelines and liquid conveying components and reduce the maintenance frequency and cost of the equipment.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1-Figure 3 As shown, this embodiment provides a water adding device 100 for asphalt foaming, including a box body 1, a water tank 2, a liquid conveying component, a first three-way joint 6, a second three-way joint 7, a first pipeline 8, a second pipeline 9, a third pipeline 10, a fourth pipeline 11, a return pipeline 16, a pressure relief valve 17 and a controller 23. The water tank 2 is arranged at the upper part of the box body 1, and the liquid conveying component is arranged at the lower part of the box body 1.

[0027] The first interface of the first three-way joint 6 is connected to the water inlet of the liquid conveying component, one end of the first pipeline 8 is connected to the second interface of the first three-way joint 6, and the other end of the first pipeline 8 extends to the outside of the box body 1 and is used to connect to the external water source. A first control component 12 is provided on the first pipeline 8, and the first control component 12 is arranged on one end of the first pipeline 8 close to the first three-way joint 6. The two ends of the second pipeline 9 are respectively connected to the third interface of the first three-way joint 6 and the bottom of the water tank 2. A second control component 13 is provided on the second pipeline 9, and the second control component 13 is arranged on one end of the second pipeline 9 close to the first three-way joint 6.

[0028] The first interface of the second three-way joint 7 is connected to the water outlet of the liquid conveying component, one end of the third pipeline 10 is connected to the second interface of the second three-way joint 7, and the other end of the third pipeline 10 extends to the outside of the box body 1, and the third pipeline 10 is provided with a third control component 14, and the third control component 14 is arranged on the third pipeline 10 near one end of the second three-way joint 7, one end of the fourth pipeline 11 is connected to the third interface of the second three-way joint 7, and the other end of the fourth pipeline 11 extends to the outside of the box body 1 and is used to be connected to the water adding nozzle, and the fourth pipeline 11 is provided with a fourth control component 15, and the fourth control component 15 is arranged on one end of the fourth pipeline 11 near the second three-way joint 7.

[0029] One end of the return pipe 16 is connected to the fourth pipe 11 and is located between the fourth control component 15 and the water adding nozzle. The other end of the return pipe 16 is connected to the bottom of the water tank 2. A pressure relief valve 17 is provided on the return pipe 16. The liquid conveying component, the first control component 12, the second control component 13, the third control component 14 and the fourth control component 15 are all connected to the controller 23.

[0030] When adding water, the controller 23 controls the second control component 13 and the fourth control component 15 to open, the first control component 12 and the third control component 14 to close, and controls the liquid conveying component to open, thereby pumping the water in the water tank 2 through the second pipe 9 and the fourth pipe 11 to the water adding nozzle for spraying. When the water adding nozzle is blocked, the water pressure in the pipe will increase. When the water pressure exceeds the preset pressure of the pressure relief valve 17, the water flows into the water tank 2 through the return pipe 16, thereby avoiding the problem of pipe bursting caused by the sharp increase in pressure in the pipe and damage to the liquid conveying component due to overload, which can ensure the safety of the pipe and liquid conveying components and reduce the maintenance frequency and cost of the equipment.

[0031] When adding water, it is also possible to use an external water source instead of the water in the water tank 2. Specifically, the controller 23 controls the first control component 12 and the fourth control component 15 to open, the second control component 13 and the third control component 14 to close, and controls the liquid delivery component to open, thereby pumping the external water source through the first pipeline 8 and the fourth pipeline 11 to the water adding nozzle for spraying. Similarly, if the water adding nozzle becomes clogged, the water pressure in the pipeline will increase. When the water pressure exceeds the preset pressure of the pressure relief valve 17, the water flows into the water tank 2 through the return pipeline 16.

[0032] When the entire device is no longer working, the controller 23 controls the second control component 13 and the third control component 14 to open, the first control component 12 and the fourth control component 15 to close, and controls the liquid delivery component to open, so that the water in the water tank 2 is pumped to the outside through the second pipeline 9 and the third pipeline 10, avoiding the water in the water tank 2 from being polluted by long-term non-use, and facilitating the next use of the water tank 2.

[0033] This embodiment also includes a water flow sensor 18, which is disposed on the fourth pipe 11 and located between the connection between the return pipe 16 and the fourth pipe 11 and the water supply nozzle. The water flow sensor 18 is connected to the controller 23. The water flow in the fourth pipe 11 is monitored by the water flow sensor 18.

[0034] This embodiment also includes a pressure sensor 19, which is arranged on the fourth pipeline 11 and is located between the connection between the return pipeline 16 and the fourth pipeline 11 and the water flow sensor 18. The pressure sensor 19 is connected to the controller 23. The pressure in the fourth pipeline 11 is monitored by the pressure sensor 19.

[0035] This embodiment further includes a pressure gauge 20, which is provided on the fourth pipeline 11 and located between the connection between the return pipeline 16 and the fourth pipeline 11 and the fourth control component 15. The pressure gauge 20 allows the pressure in the fourth pipeline 11 to be directly observed.

[0036] This embodiment also includes a liquid level sensor 21 and a water supply device. The liquid level sensor 21 is arranged in the water tank 2 and is used to monitor the liquid level in the water tank 2. The water supply device is used to supply water to the water tank 2. The liquid level sensor 21 and the water supply device are both connected to the controller 23.

[0037] Specifically, the water supply device includes a water supply pipe and a water supply pump. One end of the water supply pipe extends into the box body 1 and is connected to the upper part of the water tank 2, and the other end is connected to the external water source. The water supply pump is arranged on the water supply pipe and is connected to the controller 23.

[0038] When the liquid level sensor 21 detects that the water level in the water tank 2 is lower than the preset minimum value, the controller 23 controls the water supply pump to turn on and pump water into the water tank 2 through the water supply pipe. When the liquid level sensor 21 detects that the water level in the water tank 2 reaches the preset maximum value, the controller 23 controls the water supply pump to turn off.

[0039] Specifically, a filter is provided on the second pipeline 9, and the filter is located between the second control component 13 and the water tank 2. By providing the filter, the water flowing out of the water tank 2 is filtered to avoid excessive impurities affecting the liquid delivery component and the water adding nozzle.

[0040] This embodiment further includes a support base 5 , which is disposed at the bottom of the box body 1 , and a liquid delivery component is disposed on the support base 5 .

[0041] Specifically, an opening is provided on the front side of the box body 1 , and a box door 32 that can be opened and closed is installed at the opening.

[0042] In this embodiment, a fixing part 24 is provided at each of the four corners of the bottom of the water tank 2, and a plurality of supporting parts 25 are provided on the upper inner wall of the box body 1. Each fixing part 24 is located above a supporting part 25, and each fixing part 24 and a supporting part 25 are connected by a fixing assembly.

[0043] Specifically, the fixing assembly includes a fixing bolt 26 and a nut 27 . The fixing bolt 26 passes through the fixing member 24 and the supporting member 25 from top to bottom and is installed with the nut 27 , thereby fixing the fixing member 24 and the supporting member 25 .

[0044] In this embodiment, the fixing member 24 is a channel steel, and the supporting member 25 is an L-shaped angle steel.

[0045] This embodiment also includes a base, which includes two bottom support components. The two bottom support components are respectively arranged on the front and back sides of the bottom of the box body 1.

[0046] like Figure 3 As shown, the bottom support assembly includes a bottom plate 28 and a vibration-damping cushion 29 disposed on the bottom plate. A fixing hole 30 is provided at each end of the bottom plate 28 to facilitate securing the bottom plate 28. The box body 1 is disposed on top of the vibration-damping cushions 29 of the two bottom support assemblies. Specifically, the vibration-damping cushions 29 employ a hexagonal honeycomb structure.

[0047] Specifically, a plurality of through holes 31 are evenly arranged on the bottom of the box body 1 , and each connecting bolt can pass through a through hole 31 and the vibration-damping cushion 29 in sequence and then be installed on the bottom plate 28 , thereby fixing the box body 1 on the bottom plate 28 .

[0048] In this embodiment, a connecting piece 22 is provided at the bottom of the water tank 2 , and a controller 23 is installed on the connecting piece 22 .

[0049] The liquid delivery components in this embodiment include a liquid delivery pump 3, a motor 4, and a frequency converter. The first interface of the first three-way connector 6 is connected to the water inlet of the liquid delivery pump 3, and the first interface of the second three-way connector 7 is connected to the water outlet of the liquid delivery pump 3. The motor 4 is connected to the liquid delivery pump 3, and the power supply is connected to the power input terminal of the motor 4 via the frequency converter. The control terminal of the frequency converter is connected to the signal output terminal of the controller 23. The controller 23 can adjust the speed of the liquid delivery pump 3 through the frequency converter to control the water flow rate and thus the mixing ratio of asphalt and water.

[0050] In this specific embodiment, the first control component 12 is a first solenoid valve, the second control component 13 is a second solenoid valve, the third control component 14 is a third solenoid valve, and the fourth control component 15 is a fourth solenoid valve.

[0051] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A water adding device for asphalt foaming, characterized in that: The invention comprises a box body, a water tank, a liquid conveying component, a first three-way joint, a second three-way joint, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a return pipeline, a pressure relief valve and a controller, wherein the water tank is arranged at the upper part of the box body, and the liquid conveying component is arranged at the lower part of the box body; the first interface of the first three-way joint is connected to the water inlet of the liquid conveying component, one end of the first pipeline is connected to the second interface of the first three-way joint, and the other end of the first pipeline extends to the outside of the box body and is used to be connected to an external water source, a first control component is provided on the first pipeline, and the two ends of the second pipeline are respectively connected to the third interface of the first three-way joint and the bottom of the water tank, and a second control component is provided on the second pipeline; the first interface of the second three-way joint is connected to the liquid conveying component The outlet of the component is connected, one end of the third pipeline is connected to the second interface of the second three-way joint, and the other end of the third pipeline extends to the outside of the box body, and a third control component is provided on the third pipeline. One end of the fourth pipeline is connected to the third interface of the second three-way joint, and the other end of the fourth pipeline extends to the outside of the box body and is used to be connected to the water adding nozzle, and a fourth control component is provided on the fourth pipeline; one end of the return pipeline is connected to the fourth pipeline and is located between the fourth control component and the water adding nozzle, and the other end of the return pipeline is connected to the bottom of the water tank, and the pressure relief valve is provided on the return pipeline, and the liquid delivery component, the first control component, the second control component, the third control component and the fourth control component are all connected to the controller.

2. The water adding device for asphalt foaming according to claim 1, characterized in that: It also includes a water flow sensor, which is arranged on the fourth pipeline and located between the connection between the return pipeline and the fourth pipeline and the water adding nozzle. The water flow sensor is connected to the controller.

3. The water adding device for asphalt foaming according to claim 2, characterized in that: It also includes a pressure sensor, which is arranged on the fourth pipeline and located between the connection between the return pipeline and the fourth pipeline and the water flow sensor. The pressure sensor is connected to the controller.

4. The water adding device for asphalt foaming according to claim 1, characterized in that: It also includes a pressure gauge, which is arranged on the fourth pipeline and located between the connection between the return pipeline and the fourth pipeline and the fourth control component.

5. The water adding device for asphalt foaming according to claim 1, characterized in that: It also includes a liquid level sensor and a water supply device. The liquid level sensor is arranged in the water tank and is used to monitor the liquid level in the water tank. The water supply device is used to supply water to the water tank. The liquid level sensor and the water supply device are both connected to the controller.

6. The water adding device for asphalt foaming according to claim 1, characterized in that: The second pipeline is provided with a filter, and the filter is located between the second control component and the water tank.

7. The water adding device for asphalt foaming according to claim 1, characterized in that: It also includes a support base, which is arranged at the bottom of the box body, and the liquid conveying component is arranged on the support base.

8. The water adding device for asphalt foaming according to claim 1, characterized in that: The front side of the box body is provided with an opening, and a box door that can be opened and closed is installed at the opening.

9. The water adding device for asphalt foaming according to claim 1, characterized in that: A fixing part is provided at each of the four corners of the bottom of the water tank, and a plurality of supporting parts are provided on the upper inner wall of the box body. Each of the fixing parts is located above a supporting part, and each of the fixing parts and one of the supporting parts are connected through a fixing assembly.

10. The water adding device for asphalt foaming according to claim 1, characterized in that: It also includes a base, which includes two bottom support components, and the bottom support component includes a bottom plate and a vibration-damping buffer pad arranged on the bottom plate. A fixing hole is provided at both ends of the bottom plate, and the box body is arranged on the upper part of the vibration-damping buffer pads of the two bottom support components.

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