阅读说明：本技术 一种节能加热、均匀分流的全宽度再生剂添加系统 (Full-width regenerant adding system capable of saving energy, heating and uniformly distributing ) 是由 万良钢 段鹏鹏 施伟斌 曹巍巍 于 2021-09-26 设计创作，主要内容包括：本发明公开了一种节能加热、均匀分流的全宽度再生剂添加系统,涉及沥青路面就地热再生技术领域。通过多洒布头均匀分流可实现全宽度喷洒,并且能够在满足大储量的同时,实现小功率加热。所述再生剂添加系统包括存储箱、加热组件、分流组件以及布洒组件；所述加热组件包括加热箱以及加热火排；所述分流组件包括输出泵以及微量分流装置,所述微量分流装置包括进料管、进料仓以及多个分流仓；所述布洒组件包括多个与分流仓一一对应的洒布头。本案中存储箱与加热箱分离,小功率加热器再生剂流动连续加热,PLC温控系统自动启停加热,适应工况要求没有热量浪费；不同流量均可均分为多条输出流量；可实现路面全宽度的多头均匀洒布再生剂。(The invention discloses an energy-saving heating and uniform-diversion full-width regenerant adding system, and relates to the technical field of asphalt pavement hot in-place regeneration. The full-width spraying can be realized by uniformly distributing the water by the multiple spraying heads, and the low-power heating can be realized while the large storage capacity is met. The regenerant addition system comprises a storage tank, a heating assembly, a flow dividing assembly and a distributing assembly; the heating assembly comprises a heating box and a heating fire grate; the flow dividing assembly comprises an output pump and a micro flow dividing device, and the micro flow dividing device comprises a feeding pipe, a feeding bin and a plurality of flow dividing bins; the distributing assembly comprises a plurality of distributing heads which are in one-to-one correspondence with the shunting bins. In the scheme, the storage box is separated from the heating box, the low-power heater is continuously heated by flowing the regenerant, and the PLC temperature control system is automatically started and stopped for heating, so that no heat waste is caused when the PLC temperature control system is adapted to working conditions; different flows can be equally divided into a plurality of output flows; the full-width multi-head uniform spreading of the regenerant on the road surface can be realized.)

1. The full-width regenerant adding system is characterized by comprising a storage tank (2), a heating assembly, a shunting assembly and a distributing assembly, wherein the storage tank is used for storing a regenerant; the heating assembly comprises a heating box (6) and a heating fire grate (7), an inlet of the heating box (6) is communicated with the storage box (2), and the heating fire grate (7) is fixedly connected below the heating box (6);

the flow dividing assembly comprises an output pump (10) and a micro flow dividing device (12), the micro flow dividing device (12) comprises a feeding pipe (121), a feeding bin (122) and a plurality of flow dividing bins (123), an inlet of the output pump (10) is connected with an outlet of the heating box (6), an outlet of the output pump (10) is connected with the feeding bin (122) through the feeding pipe (121), the flow dividing bins (123) are arranged in parallel and are communicated with the feeding bin (122), each flow dividing bin (123) is provided with a pair of flow dividing gears (124) which are meshed with each other, and the flow dividing gears (124) in the flow dividing bins (123) keep synchronous rotation through a linkage shaft;

the distributing assembly comprises a plurality of distributing heads (16) which correspond to the distributing bins (123) one by one, and inlets of the distributing heads (16) are connected with outlets of the distributing bins (123).

2. An energy-efficient heated, uniformly split, full-width regenerant addition system according to claim 1, wherein the heating tank (6) is in communication with the storage tank (2) through a communication conduit, and wherein a one-way valve (5) is provided in the communication conduit.

3. An energy efficient heated, evenly distributed, full width regenerant addition system according to claim 1, wherein the heating assembly further comprises a vent pipe (1), wherein the vent pipe (1) extends through the storage tank (2), and wherein a side orifice of the vent pipe (1) extends between the heating tank (6) and the heating grate (7).

4. The energy-saving heating uniform-flow-dividing full-width regenerant addition system according to claim 1, wherein the heating fire row (7) comprises a burner panel (71), a burner main body (74), a base (75), a main mixing barrel (70) and a secondary mixing barrel (78), the base (75) is fixedly arranged below the heating box (6), the burner main body (74) is fixedly connected to the base (75), the burner panel (71) is fixedly connected to the burner main body (74), and a plurality of main fire rows (72) and a plurality of small fire rows (73) are arranged on the burner panel (71) at intervals;

the main mixing cylinder (70) is fixedly connected to one side of the burner main body (74) and is simultaneously connected with a plurality of main fire rows (72), and a main electromagnetic switch valve (9) is arranged in the main mixing cylinder (70);

the auxiliary mixing cylinder (78) is fixedly connected to one side of the burner main body (74) and is simultaneously connected with a plurality of small fire rows (73), and an auxiliary electromagnetic switch valve (13) is arranged in the auxiliary mixing cylinder (78);

heating fire row (7) still include ignition needle (76) and lift base (77), lift base (77) fixed connection is on base (75), ignition needle (76) are connected on lift base (77) to run through combustor panel (71) and combustor main part (74), drive ignition needle (76) up-and-down motion through lift base (77).

5. The energy-saving heating and uniformly-shunting full-width regenerant addition system according to claim 4, wherein a temperature sensor (8) is further arranged at an outlet of the heating box (6), and the temperature sensor (8), the output pump (10), the main electromagnetic switch valve (9) and the auxiliary electromagnetic switch valve (13) are all connected with a PLC (programmable logic controller) controller (17).

6. The energy-saving heating and uniform flow dividing full-width regenerant addition system according to claim 1, wherein the distribution assembly further comprises equidistant extension structures (14) and direct current motors (15) connected to the distribution heads (16), the distance between the distribution heads (16) is controlled by the equidistant extension structures (14), and the distribution heads (16) are driven by the direct current motors (15) to distribute the regenerant.

Technical Field

The invention relates to the technical field of in-situ thermal regeneration of asphalt pavements, in particular to a core technology for improving the adding uniformity of a regenerant and improving the heat energy utilization rate in-situ thermal regeneration continuous construction operation.

Background

In the in-situ heat regeneration construction of asphalt pavements, the addition of a regenerant for reducing an aged asphalt material is an important technical link, wherein how to ensure effective fusion of the regenerant and the aged asphalt material, the addition amount is uniform, stable and controllable, and the heating mode of the regenerant is a technical difficulty of the construction on the construction quality and the heat energy utilization rate.

The existing heat regeneration construction regenerant addition technology mainly has the following obvious technical problems:

the other method is non-full-width centralized addition, only the exposed asphalt material with a thin surface layer needs to be reduced by the regenerant in the thermal regeneration construction, the regenerant is integrally added after pavement materials are collected and mixed into a material pile in the existing published regenerant addition technology, both aged and non-aged asphalt materials are fused with the regenerant, and the regeneration fusion target is inaccurate.

In addition, another important reason that the prior art is difficult to realize multi-head shunt full-width distribution is that the flow rate of the regenerant required by actual construction is small, and the prior art cannot meet the requirement of flow distribution uniformity among multiple distribution heads.

Secondly, the heating technology has low heat energy utilization rate, the existing published regenerant heating technology adopts a box volume integral heating and heat preservation mode, and the regenerant required by daily construction generally needs several cubic volumes. The integral heating of the large-capacity storage box to the required temperature consumes long time, needs better heat preservation measures and has low heat utilization rate; however, if the volume of the box body is small and the normal-temperature regenerant needs to be added midway, the temperature of the regenerant in the box body can be obviously reduced, and the construction quality can be influenced.

Disclosure of Invention

Aiming at the problems, the invention provides an energy-saving heating and uniformly-shunting full-width regenerant adding system, which can realize full-width spraying by uniformly shunting multiple sprinkling heads and can realize low-power heating while meeting the requirement of large reserves.

The technical scheme of the invention is as follows: the regenerant addition system comprises a storage tank 2, a heating assembly, a flow dividing assembly and a distributing assembly; the heating assembly comprises a heating box 6 and a heating fire grate 7, an inlet of the heating box 6 is communicated with the storage box 2, and the heating fire grate 7 is fixedly connected below the heating box 6;

the flow dividing assembly comprises an output pump 10 and a micro flow dividing device 12, the micro flow dividing device 12 comprises a feeding pipe 121, a feeding bin 122 and a plurality of flow dividing bins 123, an inlet of the output pump 10 is connected with an outlet of the heating box 6, an outlet of the output pump 10 is connected with the feeding bin 122 through the feeding pipe 121, the flow dividing bins 123 are arranged in parallel and are communicated with the feeding bin 122, each flow dividing bin 123 is provided with a pair of flow dividing gears 124 which are meshed with each other, and the flow dividing gears 124 in the flow dividing bins 123 are kept to rotate synchronously through a linkage shaft;

the distributing assembly comprises a plurality of distributing heads 16 which are in one-to-one correspondence with the distributing bins 123, and inlets of the distributing heads 16 are connected with outlets of the distributing bins 123.

The heating tank 6 communicates with the storage tank 2 through a communication duct, and a check valve 5 is provided in the communication duct.

The heating assembly further comprises a ventilating pipe 1, wherein the ventilating pipe 1 penetrates through the storage box 2, and a pipe orifice on one side of the ventilating pipe 1 extends into a position between the heating box 6 and the heating fire grate 7.

The heating fire row 7 comprises a burner panel 71, a burner main body 74, a base 75, a main mixing cylinder 70 and an auxiliary mixing cylinder 78, wherein the base 75 is fixedly arranged below the heating box 6, the burner main body 74 is fixedly connected to the base 75, the burner panel 71 is fixedly connected to the burner main body 74, and a plurality of main fire rows 72 and a plurality of small fire rows 73 are arranged on the burner panel 71 at intervals;

the main mixing cylinder 70 is fixedly connected to one side of the burner main body 74 and is simultaneously connected with a plurality of main fire rows 72, and a main electromagnetic switch valve 9 is arranged in the main mixing cylinder 70;

the auxiliary mixing cylinder 78 is fixedly connected to one side of the burner main body 74 and is simultaneously connected with a plurality of small fire rows 73, and an auxiliary electromagnetic switch valve 13 is arranged in the auxiliary mixing cylinder 78;

the heating fire grate 7 further comprises an ignition needle 76 and a lifting base 77, the lifting base 77 is fixedly connected to the base 75, the ignition needle 76 is connected to the lifting base 77 and penetrates through the burner panel 71 and the burner main body 74, and the ignition needle 76 is driven to move up and down through the lifting base 77.

And a temperature sensor 8 is further arranged at the outlet of the heating box 6, and the temperature sensor 8, the output pump 10, the main electromagnetic switch valve 9 and the auxiliary electromagnetic switch valve 13 are all connected with a PLC (programmable logic controller) 17.

The cloth sprinkling assembly further comprises an equidistance extension structure 14 and a direct current motor 15 connected to each cloth sprinkling head 16, the distance between each cloth sprinkling head 16 is controlled through the equidistance extension structure 14, and the cloth sprinkling of the regenerant is carried out by the cloth sprinkling heads 16 driven by the direct current motor 15.

The invention relates to a novel full-width uniformly-distributed energy-saving temperature-control heating regenerant adding system, which comprises a regenerant storage tank, an energy-saving heating system, an automatic temperature control system, a micro automatic flow dividing device, a bypass valve, a blow-down valve and other elements.

The specific working principle is as follows:

the normal temperature regenerant is stored in a regenerant box, the regenerant freely flows into a heating box body with a separated lower structure through a small-bore communicating pipeline arranged inside, a PLC (programmable logic controller) is used for rapidly heating and raising the temperature according to a target temperature through a temperature controller setting parameter, the regenerant meeting the construction temperature enters the automatic micro-flow distribution device under the driving of a conveying pump with automatic flow control, coaxial wheels are driven to synchronously rotate by utilizing the conveying pressure of a system in a plurality of groups of coaxial wheel cavities, the regenerant is uniformly distributed to the output ports of each coaxial wheel, the multi-head distribution uniformity of the small-flow regenerant is realized, and the uniform distribution function of the regenerant on a full-width road surface under the actual construction condition is realized.

As for the energy-saving heating control system, the regenerant system provided by the invention adopts a large-capacity storage tank, and the regenerant system does not need to be added in the midway to sufficiently meet daily construction requirements. The heater has a structure that the storage box is separated from the heating box and the pipelines between the box bodies are communicated up and down, the heater power is designed according to the limit flow required by unit time construction, and the heater is of a nested double-fire-bank structure. The construction requirements of construction on the flow and the temperature of the regenerant are met in a mode of low power, low flow, rapid heating and continuous output. The starting and stopping of the warmer are automatically controlled by a temperature sensor PLC program, the temperature maintaining stage avoids the problems that a high-power heater is used for integrally heating the storage box in a conventional method, and the required high power of the heater and the requirements of accessory facilities such as a heat preservation device are needed, and meanwhile, a large amount of high-temperature air generated by combustion passes through the inside of the large-capacity storage box body to preheat the regenerant which is about to continuously enter the heating box in the box. The time requirement from normal temperature to the use temperature of the regenerant is met, the power consumption is reduced, and the construction operation efficiency is improved.

Regarding the program-controlled gas heating fire grate, the special heater of the invention aims at the problems that the high-temperature areas of the heating modes such as the common heating stove, the flame burner and the like are concentrated, and the uniform heat transfer is difficult to form on the required heating surface. The heating area of the heater is matched with the shape and the size of a heating surface of the heating box, and the heating speed is high due to uniform heat distribution. The automatic lifting electronic ignition mode is adopted, the problems that the construction working condition time is long, the heat is large, and the service life of the conventional heater ignition element in a long-term high-temperature environment is short are solved, and after the ignition is successful, the control program drives the bottom electric lifting device to lower the ignition element to a low-temperature area. The embedded double-group fire grate is controlled to be on and off by two electromagnetic valves respectively so as to meet the requirements of different working conditions of heating and heat preservation.

Regarding the micro multi-head shunt system, the small-flow multi-head shunt device adopts a plurality of groups of meshing gear shunt devices aiming at the current situation that the flow of the regenerant in the thermal regeneration construction is small, and the conventional multi-head shunt device can not realize uniform shunt from the driving element end by adopting the modes of air pressure assistance, multi-group parallel pump group delivery and the like. The flow of the regenerant needed in unit time enters the inlet of the micro-flow divider driven by a single delivery pump, the rotors of the gear pairs of the flow divider rotate driven by the pressure of a delivery fluid pipeline, and each gear pair outputs the same amount of regenerant at different rotating speeds. Therefore, the output flow of each group is the average value of the total input flow under different working conditions and different rotating speeds, the passive micro-flow splitting principle is realized, and the influence of the total flow change is avoided. Therefore, in the actual construction of adding the regenerant in the thermal regeneration, the disc-type spreading elements with equally-distributed widths are utilized, the full-width construction spreading is realized to the maximum extent, and the regenerant is directly added on the asphalt pavement surface layer material which needs to be regenerated and reduced most, so that the construction uniformity and effectiveness are ensured.

In the scheme, the storage box is separated from the heating box, the low-power heater regenerators flow to continuously heat, and the PLC temperature control system automatically starts and stops heating, so that no heat is wasted when the PLC temperature control system is adapted to working condition requirements; the small flow dividing device does not need active control, and different flows can be equally divided into a plurality of output flows; the extension structure enables each spraying head to be divided into different surface widths, the speed regulating motor controls the size of a spraying circle, and multi-head uniform spraying of the regenerating agent of the full width of a pavement can be achieved.

Drawings

FIG. 1 is a schematic structural diagram of the present application,

figure 2 is a schematic view of the structure of a heating fire grate,

FIG. 3 is a schematic view of the micro-flow dividing device,

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

in the figure, 1 is a vent pipe, 2 is a storage tank, 3 is a regenerant, 4 is a secondary vent pipe, 5 is a check valve, and 6 is a heating tank; 7 is a heating fire row, 71 is a burner panel, 72 is a main fire row, 73 is a small fire row, 74 is a burner body, 75 is a base, 76 is an ignition needle, 77 is a lifting base, 78 is an auxiliary mixing cylinder, and 70 is a main mixing cylinder;

8 is a temperature sensor, 9 is a main electromagnetic switch valve, 10 is an output pump, and 11 is a fuel gas storage tank; 12 is a micro-flow-dividing device, 121 is a feeding pipe, 122 is a feeding bin, 123 is a flow-dividing bin, 124 is a flow-dividing gear, 13 is an auxiliary electromagnetic switch valve, 14 is an equidistant extending structure, 15 is a direct current motor, and 16 is a spreading head.

Detailed Description

In order to clearly explain the technical features of the present patent, the following detailed description of the present patent is provided in conjunction with the accompanying drawings.

As shown in figures 1-4, the regenerant addition system comprises a storage tank 2, a heating assembly, a flow splitting assembly and a distributing assembly; the heating assembly comprises a heating box 6 and a heating fire grate 7, an inlet of the heating box 6 is communicated with the storage box 2, and the heating fire grate 7 is fixedly connected below the heating box 6; so that the regenerant in the heating box is heated by means of the heating fire row. Thus, after the amount of the regenerant in the heating tank reaches a set value, the regenerant can be supplemented into the heating tank through the storage tank, so that low-power heating can be realized while large storage capacity is met.

The flow dividing assembly comprises an output pump 10 and a micro flow dividing device 12, the micro flow dividing device 12 comprises a feeding pipe 121, a feeding bin 122 and a plurality of flow dividing bins 123, an inlet of the output pump 10 is connected with an outlet of the heating box 6, an outlet of the output pump 10 is connected with the feeding bin 122 through the feeding pipe 121, the flow dividing bins 123 are arranged in parallel and are communicated with the feeding bin 122, each flow dividing bin 123 is provided with a pair of flow dividing gears 124 which are meshed with each other, and the flow dividing gears 124 in the flow dividing bins 123 are kept to rotate synchronously through a linkage shaft; specifically, one of the pair of diversion gears 124 can be used as a driving wheel, so that all the driving wheels are kept coaxial, and the linkage shaft penetrates through all the driving wheels and is fixedly connected with all the driving wheels, therefore, because the usage amount of the regeneration agent in the thermal regeneration construction is small, if the distribution uniformity requirement cannot be met by adopting the ordinary pipeline diversion, the diversion gears 124 in all the diversion bins 123 can always keep the same rotating speed under the driving of the liquid pressure because each gear set is assembled on the same shaft, and the uniform diversion of the input flow can be always output, thereby realizing the uniform diversion to the multiple spreading heads.

The distributing assembly comprises a plurality of distributing heads 16 which are in one-to-one correspondence with the distributing bins 123, and inlets of the distributing heads 16 are connected with outlets of the distributing bins 123. The present case can adopt the automatic sprinkling equipment that prior art was commonly used as the subassembly that sprinkles to realize that the full width sprays, for example a chinese utility model patent named "the automatic even sprinkler of additive of bituminous paving hot in place regeneration equipment", application number "201020022978.5" that announces in 2010 10 months 6 days.

The heating tank 6 communicates with the storage tank 2 through a communication duct, and a check valve 5 is provided in the communication duct. Thereby controlling the supply of material from the storage tank 2 into the heating tank.

The heating assembly further comprises a ventilating pipe 1, wherein the ventilating pipe 1 penetrates through the storage box 2, and a pipe orifice on one side of the ventilating pipe 1 extends into a position between the heating box 6 and the heating fire grate 7. During the actual use, can be at the fixed heating chamber that sets up in the bottom of heating cabinet 6, arrange the heating chamber in with the heating fire to keep communicateing with the heating chamber with one side mouth of pipe and the breather pipe 1. In addition, in order to improve the use effect, the number of the snorkels 1 can be increased appropriately, or the auxiliary snorkel 4 can be increased, so that the auxiliary snorkel 4 penetrates through the storage box 2, and a side nozzle of the auxiliary snorkel 4 is communicated with the heating bin. Therefore, high-temperature air generated by heating is bent and communicated to the external space from the inside of the storage box 2 through the stainless steel vent pipe 1 and the auxiliary vent pipe 4, so that the regenerant in the storage box is preheated to a certain degree, and the energy consumption required when the regenerant is subsequently sent to the heating box for heating is reduced.

The heating fire row 7 comprises a burner panel 71, a burner main body 74, a base 75, a main mixing cylinder 70 and an auxiliary mixing cylinder 78, wherein the base 75 is fixedly arranged below the heating box 6, the burner main body 74 is fixedly connected to the base 75, the burner panel 71 is fixedly connected to the burner main body 74, and a plurality of main fire rows 72 and a plurality of small fire rows 73 are arranged on the burner panel 71 at intervals;

the main mixing cylinder 70 is fixedly connected to one side of the burner main body 74 and is simultaneously connected with a plurality of main fire rows 72, and a main electromagnetic switch valve 9 is arranged in the main mixing cylinder 70;

the auxiliary mixing cylinder 78 is fixedly connected to one side of the burner main body 74 and is simultaneously connected with a plurality of small fire rows 73, and an auxiliary electromagnetic switch valve 13 is arranged in the auxiliary mixing cylinder 78;

in actual use, fuel and air can be introduced into the main mixing cylinder 70 and the auxiliary mixing cylinder 78;

the heating fire grate 7 further comprises an ignition needle 76 and a lifting base 77, the lifting base 77 is fixedly connected to the base 75, the ignition needle 76 is connected to the lifting base 77 and penetrates through the burner panel 71 and the burner main body 74, and the ignition needle 76 is driven to move up and down through the lifting base 77. The lifting base 77 may be a linear driving mechanism such as an electric push rod, so as to realize active lifting control of the ignition position and the lowest position.

With reference to fig. 2, the heating fire grate 7 adopts a program-controlled heating fire grate, and adopts liquefied petroleum gas as fuel, and adopts the principle of self-priming mixed combustion. The combustion panel 71 and the burner main body 74 are made of high-temperature-resistant stainless steel materials, and the main fire grate 72 and the small fire grate 73 are arranged in two groups of long and short grooves of the panel; the effective size of the combustion panel is 340mm of rectangle, and the structure thickness is 60 mm; the combustion main body 74 and the base 75 are of a detachable installation structure, so that the installation and maintenance of internal elements are facilitated; the corner of the panel is provided with a mounting hole for automatically lifting an ignition needle 76, and the lower part of the panel is provided with an electric lifting base 77, so that the electric control lifting of the ignition position and the lowest position can be realized. The main fire grate 72 and the small fire grate 73 are respectively connected with the main mixing cylinder 70 and the auxiliary mixing cylinder 78 for air supply, and the electromagnetic switch valves 9 and 13 respectively control the on-off of the two air supply pipelines.

The heating fire grate is mainly technically characterized in that the combustion panel 71 and the burner main body 74 are made of high-temperature-resistant stainless steel materials; the main fire rows and the small fire rows are arranged at intervals, and the area ratio is 1.6: 1; the electronic ignition needle 76 automatically descends to the bottom of the combustion main body 74 after ignition is finished, so that the reliability and the service life of the ignition device are greatly improved; the main fire grate 72 and the small fire grate 73 are respectively controlled by independent solenoid valves so as to meet the requirements of opening and closing of the heating system under different conditions.

And a temperature sensor 8 is further arranged at the outlet of the heating box 6, and the temperature sensor 8, the output pump 10, the main electromagnetic switch valve 9 and the auxiliary electromagnetic switch valve 13 are all connected with a PLC (programmable logic controller) 17.

The heating fire row 7 and the heating box bottom 6 are both square in the same heating surface shape. The heating fire grate is of a gas type and is divided into a main fire grate and a small fire grate which are arranged at intervals and are respectively controlled by electromagnetic valves 9 and 13, and the main fire grate and the small fire grate share a gas storage tank 11; the heated regenerant is driven by an output pump 10 and is sent to a micro-diversion device 12 under the control of a PLC (programmable logic controller) according to the flow required by construction, a liquid temperature sensor 8 is arranged at the outlet of a heating box, the temperature of output fluid is detected and is sent to a PLC (programmable logic controller) 17, and each electromagnetic valve is opened or closed according to a set on-off program.

The control logic is as follows:

the main electromagnetic switch valve 9 and the auxiliary electromagnetic switch valve 13 are opened at the initial heating stage, the main fire grate and the small fire grate of the heater are heated normally, when the temperature sensor 8 detects that the outlet fluid reaches the set temperature, the PLC 17 closes the main fire grate electromagnetic valve 9 to break off the big fire, a heat preservation program is started, and the output pump 10 is started to enter a normal operation state.

After a certain time, when the liquid level in the heating box 6 is reduced, the system opens the one-way valve 5 of the communicating pipeline to supplement the normal-temperature regenerant, and when the average temperature of the regenerant in the heating box is reduced to the set lowest temperature, the PLC 17 opens the main fire exhaust electromagnetic valve 9, so that the heating power is rapidly increased to meet the temperature requirement of continuous output; when the regenerant in the heating box 6 exceeds the highest set temperature or the regenerant output pump 10 needs to be closed due to construction, the system continues to close the small fire discharge electromagnetic valve 13; and restarting the heating program when the temperature is reduced to the set minimum temperature or the construction is restarted. The configuration and control mode can greatly reduce the time for the construction initial heating regenerant to reach the use set temperature, improve the working efficiency and avoid the heating power waste caused by incomplete construction due to heating and heat preservation of the whole storage box.

The cloth sprinkling assembly further comprises an equidistance extension structure 14 and a direct current motor 15 connected to each cloth sprinkling head 16, the distance between each cloth sprinkling head 16 is controlled through the equidistance extension structure 14, and the cloth sprinkling of the regenerant is carried out by the cloth sprinkling heads 16 driven by the direct current motor 15. Under the construction state, the disc-type spreading heads 16 driven by the direct current motor 15 are arranged on the construction pavement through the equidistant extending structures 14, the regenerating agents are distributed on the pavement according to tangent circles by the spreading heads 16 at a preset rotating speed, and then the regenerating agents are uniformly distributed through the movement of the micro-diversion device 12 and the spreading mechanical structure, so that the uniformity and the target accuracy of adding the regenerating agents to the aging surface of the pavement are realized to the maximum degree.

The regenerant system is mainly technically characterized in that a storage box is separated from a heating box, a low-power heater is used for continuously heating the flowing regenerant, a PLC temperature control system is used for automatically starting and stopping heating, and no heat is wasted when the PLC temperature control system is adapted to working condition requirements; the small flow dividing device does not need active control, and different flows can be equally divided into a plurality of output flows; the extension structure enables each spraying head to be divided into different surface widths, the speed regulating motor controls the size of a spraying circle, and multi-head uniform spraying of the regenerating agent on the full width of the pavement is achieved.

While the invention has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.