WO2022052555A1

WO2022052555A1 - Particulate filter cleaning apparatus and particulate filter cleaning device

Info

Publication number: WO2022052555A1
Application number: PCT/CN2021/101023
Authority: WO
Inventors: 陈立峰; 刘伟军; 项昶斌; 张规; 齐明武; 娄立武; 卢晨日
Original assignee: 浙江银轮智能装备有限公司
Priority date: 2020-09-08
Filing date: 2021-06-18
Publication date: 2022-03-17
Also published as: CN113187586A; CN111963279A; CN215213648U

Abstract

A particulate filter cleaning apparatus, comprising: a cleaning cavity (1-26) for placing a particulate filter; a heating unit (1-24) for heating an air flow; an air flow driving unit (1-21) for providing a flowing driving force for the air flow; an air flow input unit (1-25) for inputting, into the cleaning cavity, a high-temperature air flow formed after same is heated by the heating unit; an air flow output unit (1-28) for outputting the high-temperature air flow from the cleaning cavity; and an air flow refluxing unit (1-23) for performing refluxing on the high-temperature air flow from the air flow output unit, such that the high-temperature air flow flows circularly. By means of the apparatus, particulates deposited in a particulate filter are cleaned by using a circular high-temperature air flow, and the high-temperature air flow directly transfers heat to the particulates in the particulate filter, such that the heat transfer efficiency is high, the cleaning time is shortened, the cleaning energy consumption is reduced, and cleaning is more thorough. Further disclosed is a particulate filter cleaning device.

Description

Particle filter cleaning device and particle filter cleaning equipment

technical field

The invention relates to the field of particle filter cleaning, in particular to a particle filter cleaning device and particle filter cleaning equipment.

Background technique

The exhaust system of a diesel vehicle includes an exhaust pipe and a diesel particulate filter (Diesel Particulate Filter, DPF) arranged in the exhaust pipe. When the exhaust gas in the exhaust pipe passes through the DPF, the particulate matter and oil in the exhaust gas are removed by the DPF. filter element adsorption filtration. However, with the increase of the working time of the diesel vehicle exhaust system, the particulate matter and oil pollution inside the DPF filter element also accumulate, resulting in an increase in the exhaust back pressure of the vehicle, an increase in the fuel consumption of the vehicle and a decrease in the power of the vehicle. In addition, when the DPF filter element is seriously blocked, the exhaust gas cannot be discharged.

The conventional solution to the above problems is to regularly remove the DPF from the diesel vehicle exhaust system and clean it (cleaning) to restore it to its normal working level.

Among them, there are many ways to clean DPF, and heating regeneration cleaning is usually used. The principle of heating regeneration cleaning is to burn and oxidize the particles adsorbed inside the DPF through high temperature heating, so as to achieve the purpose of cleaning. Heating regeneration cleaning is usually achieved by a DPF heating furnace, which uses natural heat conduction for heating, and relies on resistance wires coiled in the furnace cavity to heat the air and transfer heat to the DPF through thermal radiation. However, due to the poor thermal conductivity of DPF materials, on the one hand, it usually takes 2 hours to 3 hours to heat the internal temperature of DPF to the cleaning temperature of about 600 °C, which is too low in heating efficiency and high in energy consumption; on the other hand, DPF materials The interior is prone to uneven heating, resulting in poor cleaning results. That is, the existing DPF heating furnace has high time cost, high energy consumption cost and poor cleaning effect for DPF cleaning.

SUMMARY OF THE INVENTION

The present invention is made to solve the above problems, and aims to provide a particle filter cleaning device and a particle filter cleaning device.

The present invention provides a particle filter cleaning device, which is used for cleaning the particles deposited in the particle filter by high-temperature air flow, and has the characteristics of including: a cleaning chamber for placing the particle filter; a heating unit, It is used to heat the air flow; the air flow driving unit is used to provide the driving force for the air flow; the air flow input unit is used to input the high temperature air flow formed by the heating unit to the cleaning chamber; the air flow output unit, The high-temperature air flow in the cleaning chamber is output; and the air flow return unit is used to return the high-temperature air flow from the air flow output unit to make the high-temperature air flow circulate.

The particulate filter cleaning device provided by the present invention may also have the following features: wherein the air flow driving unit is arranged between the air flow output unit and the air flow return unit, and the heating unit is arranged between the air flow return unit and the air flow return unit. between input cells.

The particulate filter cleaning device provided by the present invention may also have such a feature, further comprising: an air intake unit for introducing external air into the cleaning chamber, and having an air intake unit for controlling the inflow of the external air. an air valve; and an air discharge unit for discharging the high temperature air flow, having an air discharge valve for controlling the discharge of the high temperature air flow.

In the particulate filter cleaning device provided by the present invention, it may also have the feature that the air flow return unit has a return valve for controlling the return flow of the high-temperature air flow.

In the particulate filter cleaning device provided by the present invention, it may also have the following characteristics: wherein the pipeline of the high-temperature air flow input unit is communicated with the lower side of the cleaning chamber, and the pipeline of the high-temperature air flow output unit is connected to the cleaning chamber. The upper side is communicated, and the heating unit is arranged below the cleaning chamber.

In the particle filter cleaning device provided by the present invention, it may also have the following feature: wherein, the bottom of the cleaning chamber is provided with a support part matched with the particle filter, and the support part is connected with the high temperature air flow input unit Pass.

In the particle filter cleaning device provided by the present invention, it may also have the following feature: wherein, the supporting part includes a supporting member, the supporting member is cylindrical and is in the shape of a truncated cone with a large upper and a small lower. The bottom is communicated with the high temperature air flow input unit.

The particle filter cleaning device provided by the present invention may also have the following feature: wherein the cleaning chamber includes a heat preservation chamber and a heat preservation door installed on the heat preservation chamber, and the heat preservation chamber and the heat preservation door both include a metal layer and a heat preservation door. The heat preservation layer disposed outside the metal layer is provided with a plurality of through holes, and the pipes of the air flow driving unit, the air flow return unit, the high temperature air flow input unit and the high temperature air flow output unit are all heat preservation pipes.

The particle filter cleaning device provided by the present invention may also have the following features: wherein, the temperature of the high-temperature air flow is 550°C to 700°C, and the cleaning time is 5min-30min.

The present invention provides a particle filter cleaning device, which has the characteristics of comprising: a cabinet; a particle filter cleaning device, which is installed on the cabinet and used for cleaning the particles deposited in the particle filter; and a control device , which is used to control the operation of the particulate filter cleaning device, wherein the particulate filter cleaning device is the above-mentioned particulate filter cleaning device.

The particulate filter cleaning device in the present invention can clean particulate filters, such as Diesel Particulate Filter (DPF for short), Gasoline Particulate Filter (GPF for short) and the like. In addition, the particulate filter cleaning equipment can also clean other parts in the exhaust system of fuel vehicles that require regular cleaning of particulate matter, such as oxidation catalytic converters (Diesel Oxidation Catalyst, referred to as DOC), exhaust gas recirculation system (Exhaust Gas Recirculation system). -circulation, referred to as EGR), selective catalytic reduction system (Selective Catalytic Reduction, referred to as SCR) and other parts involved in cleaning; and, only need to place these parts to be cleaned in the cleaning chamber of the equipment , to ensure that the high-temperature air flow can pass through these parts, and the cleaning can be achieved. In addition, when cleaning parts other than the particle filter, in order to achieve a better cleaning effect, you can choose to replace the support part in the particle filter cleaning equipment suitable for cleaning the particle filter to be suitable for the parts. Matching supporting parts.

The role and effect of the invention

The particulate filter cleaning device according to the present invention includes a cleaning chamber, a heating unit, an air flow driving unit, an air flow input unit, an air flow output unit, and an air flow return unit, wherein the cleaning chamber can accommodate the particulate filter The heating unit can heat the air flow, the air flow driving unit can provide the driving force for the air flow, the air flow input unit can input the high temperature air flow formed by the heating unit to the cleaning chamber, and the air flow output unit The high-temperature air flow in the cleaning chamber can be output, and the air flow return unit can return the high-temperature air flow from the air flow output unit to make the high-temperature air flow circulate, so as to use the circulating high-temperature air flow to place the cleaning chamber. The high-temperature air flow directly transfers heat to the particles in the particle filter, and the heat transfer efficiency is high, which can not only shorten the cleaning time, reduce cleaning energy consumption, but also clean more thoroughly.

According to the particulate filter cleaning equipment involved in the present invention, because it includes the particulate filter cleaning device and the control device, the control device can control the operation of the particulate filter cleaning device, so the device can not only automatically realize the one-time cleaning The particle oil in the particle filter is cleaned, and it also has the effect of fast, efficient, energy-saving, and thorough cleaning.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the particle filter cleaning equipment in the first embodiment of the present invention;

2 is a schematic structural diagram of a particle filter cleaning device in Embodiment 1 of the present invention;

Fig. 3 is the partial structural schematic diagram of the particle filter cleaning device in the first embodiment of the present invention;

FIG. 4 is a schematic three-dimensional structure diagram of a heating unit in Embodiment 1 of the present invention;

5 is a schematic view of the end surface structure of the heating unit in the first embodiment;

Fig. 6 is the structural representation of the support part in the first embodiment;

7 is a schematic diagram of the state in which the support portion supports the DPF through the support bar in the first embodiment;

8 is a schematic structural diagram of an air intake unit in Embodiment 1;

Fig. 9 is the structural schematic diagram of the linkage valve part in the first embodiment;

10 is a schematic diagram of the working principle of the air flow circulating in the particle filter cleaning device in the first embodiment; FIG. 11 is a schematic diagram of the working principle of the particle filter cleaning device in the first embodiment for rapid cooling;

12 is a schematic structural diagram of a particulate filter cleaning device in Embodiment 2 of the present invention; and

FIG. 13 is a schematic diagram of the working principle of the particle filter cleaning device in the second embodiment of the present invention.

detailed description

In order to make the technical means, creative features, goals and effects realized by the present invention easy to understand, the following embodiments describe the particle filter cleaning device and the particle filter cleaning equipment of the present invention in detail with reference to the accompanying drawings.

Embodiment 1 provides a particle filter cleaning device and a particle filter cleaning method.

FIG. 1 is a schematic three-dimensional structure diagram of a particle filter cleaning device in Embodiment 1 of the present invention.

As shown in FIG. 1 , the particle filter cleaning device 1-100 in this embodiment includes a cabinet 1-10, a particle filter cleaning device 1-20, and a control device 1-90.

The cabinet 1-10 is a stainless steel cuboid cabinet, and four supporting feet 1-11 are respectively fixed on the four corners of the bottom surface, so that the cabinet 1-10 has a certain distance from the ground, which is convenient for heat dissipation. Both the bottom surface and the top surface of the cabinet body 1-10 have a plurality of through holes 1-12 for air circulation and heat dissipation. The control device 1-90 is installed on the cabinet body 1-10, and is used for controlling the operation of the particle filter cleaning device 1-20.

FIG. 2 is a schematic structural diagram of a particle filter cleaning device in Embodiment 1 of the present invention.

As shown in Fig. 2, the particle filter cleaning device 1-20 is used to clean the particles deposited in the particle filter by high-temperature air flow, and is installed in the cabinet 1-10, including an air flow driving unit 1-21, a heat dissipation unit unit 1-22, air flow return unit 1-23, heating unit 1-24, air flow input unit 1-25, cleaning chamber 1-26, support part 1-27, air flow output unit 1-28, inlet Air unit 1-29 and exhaust unit 1-30.

The air flow drive unit 1-21 has a drive motor 1-211, a blower 1-212, and a drive duct 1-213.

The driving motor 1-211 is installed on the top of the cabinet 1-10, and part of the driving motor 1-211 is exposed on the top surface of the cabinet 1-10, so as to facilitate heat dissipation. The blower 1-212 is connected to the output end of the driving motor 1-211, and has an air inlet 1-2121 and an air outlet 1-2122. The blower 1-212 can take in air from the air inlet 1-2121 under the driving of the driving motor 1-61, and discharge air from the air outlet 1-2122 after generating an air flow. The driving duct 1-213 communicates with the air outlet 1-2122 of the blower 1-212, and the air flow is generated from the blower 1-212 and then enters the driving duct 1-213.

FIG. 3 is a partial structural schematic diagram of the particle filter cleaning device in the first embodiment of the present invention.

As shown in FIG. 2 and FIG. 3 , the heat dissipation unit 1-22 is installed on the top of the cabinet 1-10, and is disposed corresponding to the air flow driving unit 1-21 for cooling the driving motor 1-211. The heat dissipation unit 1-22 may be, for example, a fan driven by a motor, and the air outlet 1-221 thereof is disposed toward the driving motor 1-61, so as to cool the driving motor 1-12 by blowing air.

As shown in FIG. 2, the air flow return unit 1-23 has a return pipe 1-231 and a return valve 1-232. The return pipe 1-231 is communicated with the drive pipe 1-213, and the air flow enters the return pipe 1-231 through the drive pipe 1-213. The return valve 1-232 is arranged on the return pipe 1-231, and is used to control whether the return pipe 1-231 is connected.

FIG. 4 is a schematic three-dimensional structure diagram of a heating unit in Embodiment 1 of the present invention.

As shown in FIG. 4 , the heating unit 1-24 is communicated with the air flow return unit 1-23, and can heat the air flow conveyed by the air flow return unit 1-23 to form a high temperature air flow. The temperature of the high-temperature air flow is 550°C to 700°C, preferably 600°C. The heating unit 1-24 includes a tubular casing 1-241, a ceramic cylinder 1-242, and a plurality of heating wires 1-243.

FIG. 5 is a schematic view of the end surface structure of the heating unit in the first embodiment.

As shown in Figures 4 and 5, the tubular casing 1-241 is a high temperature resistant stainless steel casing with a length of 70cm and an inner diameter of 21cm. One end of the tubular casing 1-241 is connected to the air flow return unit 1-23, and this end is also provided with a wiring stake 1-2411. The terminal 1-2411 penetrates through the tubular casing 1-241 and is connected to an external power source for supplying power to the heating wire 1-243. The other end of the tubular casing 1-241 is connected to the air flow input unit 1-25. The outer surface of the tubular casing 1-241 is covered with a thermal insulation layer (not shown in the figure), which can keep the thermal insulation of the tubular casing 1-241.

The ceramic cylinder 1-242 is installed in the tubular casing 1-241, and the length is 3 cm-10 cm shorter than the length of the tubular casing 1-241. A gap of 0.5cm is formed between the ceramic cylinder 1-242 and the tubular shell 1-241, and the gap is filled with thermal insulation material, which can not only play a role in thermal insulation, but also play a certain buffering role to prevent the ceramic cylinder 1-242 collided with tubular casing.

The ceramic cylinder 1-242 includes a plurality of ceramic cylinder portions that are bolted together adjacent one another in sequence. The ceramic cylinder 1-242 has a plurality of through cavities 1-2421, and the extending direction of the through cavities 1-2421 is consistent with the length direction of the insulating cylinder 18. A plurality of through cavities 1-2421 are distributed in two layers along the circumferential direction of the ceramic cylinder 1-242 as an inner layer and an outer layer. In this embodiment, the number of through-cavities 1-2421 is 18, and nine through-cavities 1-2421 are provided in the inner layer and the outer layer respectively.

The plurality of heating wires 1-243 are respectively installed in the corresponding through-cavity 1-2421, so as to heat the air flowing through the through-cavity 1-2421 to form a high-temperature air flow. In this embodiment, the number of heating wires 1-243 is nine. Each heating wire is a helical cylindrical shape and distributed in a U-shape in two through-cavities 1-2421 distributed in pairs, one of the paired two through-cavities 1-2421 is located on the first floor, and the other is located on the first floor. another layer. The total power of multiple heating wires 1-243 is 27KW.

The air flow input unit 1-25 is a pipe, which is communicated with the heating unit 1-24, and is used for delivering the high temperature air flow generated by the heating unit 1-24 to the cleaning chamber 1-10. A temperature sensor is also arranged in the pipeline of the air flow input unit 1-25 to indicate the internal temperature of the DPF.

As shown in FIG. 2 , the cleaning chamber 1-26 is a rectangular box, and the cleaning chamber 10 is located above the heating unit 1-24. The cleaning chamber 1-26 includes a heat preservation chamber 1-261 and a heat preservation door 1-262 rotatably mounted on the heat preservation chamber 1-261. In this embodiment, the heat preservation door 1-262 is connected to the heat preservation cavity 1-261 through a pivot.

Both the heat preservation cavity 1-261 and the heat preservation door 1-262 include a metal layer and a heat preservation layer disposed outside the metal layer, and a plurality of through holes 1-263 are disposed on the metal layer. The thermal insulation door 1-261 also has a protective shell (not shown in the figure) and a door handle 1-264. The protective shell is arranged outside the thermal insulation layer of the thermal insulation door 1-262 to provide protection for the thermal insulation layer. The door handle 1-264 is provided on the protective shell for opening or closing the thermal insulation door 1-262. The bottom of the heat preservation cavity 1-261 is communicated with the pipeline of the air flow input unit 1-25.

FIG. 6 is a schematic structural diagram of the supporting portion in the first embodiment.

As shown in FIG. 6 , the support portion 1-27 is disposed at the bottom of the thermal insulation cavity 1-261, and includes a support member 1-271, a plurality of support bars 1-272 and a grill member 1-273.

The supporting member 1-271 is cylindrical and is in the shape of a truncated cone with a large upper part and a small lower part. The bottom of the support member 1-271 is communicated with the duct of the air flow input unit 1-25. The diameter of the top opening of the holder 1-271 is 35 cm, and the diameter of the bottom opening is 12 cm. The support member 1-271 is horizontally arranged on the heat preservation cavity 1-261.

The number of support bars 1-272 is 6. Each support bar 1-272 is in the shape of a bar with the same thickness and 5mm. The extension direction of the support bar 1-272 is consistent with the busbar direction of the support piece 1-271, and the support bar 1-272 opens from the top opening of the support piece 1-271 along the support piece 1-271 of the support piece 1-271 bottom opening.

7 is a schematic diagram of the state in which the supporting portion supports the DPF through the support bar in the first embodiment.

As shown in FIG. 7 , when cleaning the DPF, the DPF is placed vertically on the support bar 1-272, so that one end face of the DPF is in contact with all the support bars 1-272 at the same time, so that the support bar 1-272 is 272 holds steady. Different models of DPF have different diameters of the end faces and can be placed at different heights of the support bar 1-272.

The grid part 1-273 is horizontally arranged on the bottom opening of the supporting part 1-271, and is used to place the DPF of special type (the model is very small, and the diameter of its end face is smaller than the diameter of the bottom opening of the supporting part 1-271) .

When cleaning the DPF, the DPF is placed in the cleaning chamber 10 and placed on the supporting part 1-27, and the high-temperature air introduced from the air flow input unit 1-25 flows through the grille 1-273. , most of them flow through the interior of the DPF from bottom to top (enter from the end face of the bottom of the DPF, and then flow through the interior of the DPF along the length direction of the DPF, and flow out from the end face of the top of the DPF), thereby affecting the particles deposited in the DPF. Cleaning is performed, and a small portion flows from the outside of the DPF through the gap between the support bars 1-272.

The air flow output unit 1-28 is a pipe, which is communicated with the cleaning chamber 1-26 and the air flow driving unit 1-21, respectively. And the pipes of the air flow output unit 1-28 are specifically connected to the top of the cleaning chamber 10 and the air inlet 1-2121 of the blower 1-212.

FIG. 8 is a schematic structural diagram of the air intake unit in the first embodiment.

As shown in FIGS. 2 and 8 , the intake unit 1-29 includes an intake pipe 1-291 and an intake valve 1-292. The intake duct 1-291 communicates with the duct of the air flow input unit 1-25 for introducing outside air. The intake end of the intake duct 1-291 is located outside the cabinet 1-10. The outside air can enter the cleaning chamber 10 through the air inlet duct 1-291 and the duct of the air flow input unit 1-25 in sequence. The intake valve 1-292 is arranged on the intake pipe 1-291, and is an electronically controlled valve, which is used to control whether the intake pipe 1-291 is connected or disconnected under the control of the control device 1-90, so as to control the external air. access control.

The exhaust unit 1-30 includes an exhaust pipe 1-301 and an exhaust valve 1-302. The exhaust duct 1-301 communicates with the driving duct 1-213, and is used to discharge the high temperature air flow in the driving duct 1-213. The exhaust end of the exhaust duct 1-301 is located outside the cabinet 1-10. The exhaust valve 1-302 is arranged on the exhaust duct 1-301, and is used to control whether the exhaust duct 1-301 is connected or disconnected, so as to control the discharge of the high-temperature air flow.

In this embodiment, the driving pipe 1-213 is communicated with the exhaust pipe 1-301 and the return pipe 1-231 respectively through the three-way connecting pipe 1-b. The exhaust valve 1-302 and the return valve 1-232 are linked valves, and when the control device 1-90 controls one of the two valves to open, the other valve is simultaneously closed. For the specific linkage relationship, see linkage valve section 1-31.

FIG. 9 is a schematic structural diagram of the linkage valve part in the first embodiment.

As shown in FIGS. 3 and 9 , the interlocking valve portion 1-31 includes an exhaust valve 1-302, a return valve 1-232, a linkage 1-311, and a switching motor 1-312.

The exhaust valve 1-302 includes a first transmission shaft 1-3021 and a first valve plate 1-3022. The first transmission shaft 1-3021 passes through the exhaust duct 1-301. The first valve plate 1-3022 is disposed in the exhaust duct 1-301 and connected with the first transmission shaft 1-3021.

The return valve 1-232 includes a second transmission shaft 1-2321 and a second valve plate 1-2322. The second transmission shaft 1-2321 passes through the return pipe 1-231. The second valve plate 1-2322 is disposed in the return pipe 1-231 and connected with the second transmission shaft 1-2321.

The linkage 1-311 is respectively connected to the first transmission shaft 1-3021 and the second transmission shaft 1-2321 for realizing linkage. The output shaft of the switching motor 1-312 is connected with the first transmission shaft 1-3021 or the second transmission shaft 1-2321. In this embodiment, the output shaft of the switching motor 1-312 is connected to the first transmission shaft 1-3021, and is used to drive the first transmission shaft 1-3021 to rotate under the control of the control device 1-90, so that the first valve plate 1-3021 is rotated. The opening or closing of 3022 also causes the second valve plate 1-2322 to be closed or opened synchronously.

In the present embodiment, the driving pipe 1-213, the return pipe 1-231, the pipes of the high temperature air flow input unit 1-25 and the pipes of the high temperature air flow output unit 1-28 are all heat preservation pipes.

FIG. 10 is a schematic diagram of the working principle of the circulating air flow of the particle filter cleaning device in the first embodiment; FIG. 11 is a schematic diagram of the working principle of the particle filter cleaning device in the first embodiment for rapid cooling.

As shown in FIGS. 10 and 11 , this embodiment also provides a particle filter cleaning method, which uses the particle filter cleaning equipment 1-100 to clean the DPF, including the following steps:

In step SA1, the DPF is placed in the cleaning chamber 1-26 and placed on the support portion 1-27.

In step SA2, the control device 1-90 closes the intake valve 1-292 and the exhaust valve 1-302, and at this time the return valve 1-232 is opened simultaneously.

In step SA3, the control device 1-90 activates the air flow driving unit 1-21 and the heating unit 1-24, so that the air flows between the air flow driving unit 1-21, the air flow return unit 1-23, the heating unit 1-24, the air flow The input unit 1-25, the cleaning chamber 1-26, and the air flow output unit 1-28 circulate and flow (as shown by the arrow in Figure 10), and form a high-temperature air flow during the flow, when the temperature sensor When the measured temperature of the high-temperature air flow reaches the cleaning temperature of 600°C, the control device 1-90 keeps the high-temperature air flow at the cleaning temperature by controlling the heating unit 1-24, the intake valve 1-292 and the air flow driving unit 1-21 20min to complete the cleaning of DPF.

In step SA4, after the DPF cleaning is completed, the heating units 1-24 are turned off, and the temperature is naturally lowered to 500°C.

In step SA5, the control device 1-90 fully opens the intake valve 1-292 and the exhaust valve 1-302. At this time, the return valve 1-232 is opened synchronously. At this time, the external air flows through the intake unit 1-29 and the air flow in sequence. The output unit 1-28, the cleaning chamber 1-26, the air flow output unit 1-28, and the exhaust unit 1-30 (as indicated by the arrows in FIG. 11 ) thereby rapidly cool the DPF to room temperature.

Step SA6, the air flow driving unit 1-21.

Step SA7, take out the DPF.

The above is the detailed process of cleaning the first DPF when the particle filter cleaning equipment 1-100 cleans multiple DPFs one by one. About 15min, the total time of the entire DPF cleaning process is about 1h; the detailed process of cleaning the subsequent DPF is similar to the first DPF, the difference is: when the subsequent DPF is cleaned, the air flow is heated to a high temperature air flow of 600°C The time required is shortened to about 10 minutes, because when the previous DPF processing is completed, the air flow return unit 1-23 and the heating unit 1-24 of the particulate filter cleaning equipment 1-100 retain waste heat.

The function and effect of the first embodiment

The particulate filter cleaning device 1-20 according to the first embodiment includes a cleaning chamber 1-26, a heating unit 1-24, an air flow driving unit 1-21, an air flow input unit 1-25, and an air flow output Units 1-28 and air flow return unit 1-23, where the cleaning chamber 1-26 can place the DPF, the heating unit 1-24 can heat the air flow, and the air flow driving unit 1-21 can provide flow to the air flow The air flow input unit 1-25 can input the high temperature air flow formed by the heating unit 1-24 to the cleaning chamber 1-26, and the air flow output unit 1-28 can input the air flow into the cleaning chamber 1-26. The high-temperature air flow is output, and the air flow return unit 1-23 can return the high-temperature air flow from the air flow output unit 1-28 to make the high-temperature air flow circulate, so as to use the circulating high-temperature air flow to clean the chamber. The particles deposited in the DPF placed in 1-26 are cleaned, and the high-temperature air flow directly transfers heat to the particles in the DPF. The heat transfer efficiency is high, which can not only shorten the cleaning time, reduce cleaning energy consumption, but also clean more thoroughly.

Further, since the heating unit 1-24 in the first embodiment is arranged between the air flow return unit 1-23 and the air flow input unit 1-25, the arrangement makes the heating unit 1-24 relatively farther from the cleaning chamber 1-26. In this way, the heat provided by the heating unit 1-24 can be better provided to the cleaning chamber 1-26. In addition, since the air flow driving unit 1-21 is disposed between the air flow output unit 1-28 and the air flow return unit 1-23, the air flow driving unit 1-21 is far away from the heating unit 1-24 and is at a high temperature The position with the lowest temperature in the air flow circulation avoids the adverse effect of high temperature on the operation of its driving motor 1-211, and ensures that the air flow driving unit 1-21 can work normally.

Further, because the device in the first embodiment further includes an air intake unit 1-29 and an exhaust unit 1-30, the air intake unit 1-29 can introduce external air into the cleaning chamber 1-26, and the exhaust unit 1- 30 can discharge the high temperature air flow, and the intake unit 1-29 has an intake valve 1-292, and the exhaust unit 1-30 has an exhaust valve 1-302, when the intake valve 1-292 and the exhaust valve 1 When both -302 are closed, the air flow can circulate in the device (as shown in Figure 10), thereby achieving high-temperature cleaning of the DPF; when both the intake valve 1-292 and the exhaust valve 1-302 are opened, the external Air can enter from the intake unit 1-29, flow through the cleaning chamber 1-26, and be discharged from the exhaust unit 1-30, so as to achieve rapid cooling of the cleaned DPF.

Further, because the air flow return unit 1-23 in the first embodiment has a return valve 1-232, the return valve 1-232 can control the return flow of the high-temperature air flow. Therefore, when the cleaned DPF needs to be rapidly cooled At this time, both the intake valve 1-292 and the exhaust valve 1-302 can be opened and the return valve 1-232 can be closed. At this time, the outside air can not flow through the air return unit 1-23 and the heating unit 1-24, so that These two units can retain the residual heat when the DPF is rapidly cooled, so that the heating time of the device can be shortened when the next DPF is cleaned and processed, thereby improving the processing efficiency.

Further, because the pipes of the high-temperature air flow input unit 1-25 in the first embodiment are communicated with the lower side of the cleaning chamber 1-26, the pipes of the high-temperature air flow output unit 1-28 are connected to the cleaning chamber 1-26. The upper side 1-26 is connected, so as to ensure that the air flow in the cleaning chamber 1-26 flows from bottom to top, so that the DPF can be placed vertically in the cleaning chamber 1-26 The air flow smoothly circulates inside the DPF, which not only helps to achieve high temperature cleaning of the DPF, but also helps to achieve rapid cooling of the DPF and improve processing efficiency. Further, because the heating unit 1-24 is disposed below the cleaning chamber 1-26, it can be ensured that the heat provided by the heating unit 1-24 can be better provided to the cleaning chamber 1-26.

Further, the heating unit 1-24 in the first embodiment includes a tubular casing 1-241, a ceramic cylinder 1-242, and a heating wire 1-243, and the ceramic cylinder 1-242 has a plurality of through cavities 1-2421, The plurality of heating wires 1-243 are respectively arranged in the plurality of through-cavities 1-2421, so that the air flow passing through the through-cavities 1-2421 can be heated by the heating wires 1-243, and the air flows pass through different through-cavities respectively. 1-2421 is in full contact with the heating wire 1-243, so that the air flow passing through the heating unit 1-24 can heat up quickly, with high heating efficiency and less energy loss.

Further, the bottom of the cleaning chamber 1-26 in the first embodiment is provided with a supporting portion 1-27, the supporting portion 1-27 is communicated with the high-temperature air flow input unit and cooperates with the DPF, which can better Support the DPF and ensure that the air flow passes through the inside of the DPF.

Further, because the supporting portion 1-27 in the first embodiment includes a supporting member 1-271, the supporting member 1-271 is cylindrical and is in the shape of a truncated cone with a large upper and a small lower. The bottom is connected with the high temperature air flow input unit, so the support 1-271 is used to support different types of DPF, and has good applicability.

Further, the cleaning chamber 1-26 in the first embodiment includes a heat preservation chamber 1-261 and a heat preservation door 1-262 installed on the heat preservation chamber 1-261, the heat preservation chamber 1-261 and the heat preservation door 1-262 They all include a metal layer and an insulating layer arranged outside the metal layer. The metal layer is provided with a plurality of through holes. The arrangement of the through holes can avoid the occurrence of deformation of the metal layer due to repeated cold and heat changes, thereby ensuring that the device can To stabilize the operation for a long time; the setting of the insulation layer can avoid unnecessary dissipation of heat and reduce energy consumption.

Further, the driving pipeline 1-213, the return pipeline 1-231, the pipeline of the high-temperature air flow input unit 1-25 and the pipeline of the high-temperature air flow output unit 1-28 in the first embodiment are all thermal insulation pipelines, which can prevent heat from being trapped in the air. Unnecessary dissipation in these pipes reduces energy consumption.

Further, the temperature of the high-temperature air flow in the first embodiment is 550 ℃ ~ 700 ℃, and the cleaning time is 5min-30min. Such conditions can meet the needs of DPF cleaning, and can quickly and efficiently complete cleaning with very good cleaning effects. Work.

In addition, according to the particulate filter cleaning device 1-100 involved in the first embodiment, since the particulate filter cleaning device 1-20 and the control device 1-90 are included, the control device 1-90 can clean the particulate filter cleaning device 1- 20 operation, so the equipment can not only automatically clean the particle oil in the DPF at one time, but also has the effect of fast, efficient, energy-saving, and thorough cleaning.

Embodiment 2 provides a particle filter cleaning device and a particle filter cleaning method.

FIG. 12 is a schematic three-dimensional structure diagram of the particle filter cleaning device in the second embodiment of the present invention; FIG. 13 is a schematic diagram of the working principle of the particle filter cleaning device in the second embodiment of the present invention.

As shown in Fig. 12 and Fig. 13, the particle filter cleaning equipment in this embodiment, which can also be called DPF pipeline type hot air circulation heating device, includes a cabinet 2-14, a particle filter cleaning device and an electric control box 2- 15. The particulate filter cleaning device includes a cleaning chamber, a holder, an air intake unit, an air flow input unit, an air flow output unit, an air flow driving unit, three-way pipes 2-12, an exhaust unit, an air flow return unit, and a heating unit. Wherein, the air flow driving unit includes a circulation fan 2-4 and a drainage fan 2-8.

The cleaning chamber is the heating bin 2-5, which is arranged in the middle of the cabinet 2-14. The inside of the heating chamber 2-5 is provided with a support portion for placing the loading DPF, that is, the loading tool 2-7. The air intake unit and the air flow input unit are connected to form an air intake pipe 2-3. The air inlet end at the bottom of the heating chamber 2-5 is connected to the air outlet end of the air inlet pipe 2-3. An intake valve 2-2 and a circulating fan 2-4 are arranged on the intake pipe 2-3. The intake end of the intake pipe 2-3 extends out of the cabinet 2-14.

The air flow output unit is the air outlet pipe 2-13. The air outlet end at the top of the heating chamber 2-5 is connected to the air inlet end of the air outlet pipe 2-13. A drainage fan 2-8 and a flow meter 2-9 are arranged on the air outlet pipe 2-13. The air outlet end of the air outlet pipe 2-13 is connected to the air inlet end of the three-way pipe 2-12.

An outlet end of the three-way pipe 2-12 is connected to an exhaust unit, and the exhaust unit is an exhaust pipe 2-10. The other air outlet end of the three-way pipe 2-12 is connected to the air inlet end of the air flow return unit, and the air flow return unit is the air circulation pipe 2-1. Wherein, an exhaust valve 2-11 is provided at the outlet end of the exhaust pipe 2-10, and the exhaust end of the exhaust pipe 2-10 extends out of the cabinet 2-14.

A heating unit is arranged inside the air circulation pipe 2-1, and the heating unit is an air heating device 2-6. The air outlet end of the air circulation pipe 2-1 is connected to the middle of the air inlet pipe 2-3.

The electric control box 2-15 is arranged inside the cabinet 2-14.

In an optional embodiment, the processing technology for processing DPF using the above-mentioned particle filter cleaning equipment includes the following procedures:

SB1: Mount DPF on loading tool 2-7.

SB2: Start the circulating fan 2-4; the heating device 2-6 heats the air in the air circulation pipe 2-1, and the air circulates.

SB3: Control the opening and closing degrees of the intake valve 2-2 and the exhaust valve 2-11 to ensure that an appropriate amount of oxygen enters the air circulation pipe 2-1 to participate in the combustion and oxidation reaction; at the same time, the exhaust pipe 2-10 discharges part of the waste gas.

SB4: After the DPF is processed, it is cooled.

SB5: In the cooling stage, the heating device 2-6 is turned off to cool down naturally; then, the intake valve 2-2 and the exhaust valve 2-11 are fully opened, and cold air is introduced to cool the DPF by air.

SB6: After the DPF is cooled to the preset temperature, turn off the circulating fans 2-4.

SB7: Completely close intake valve 2-2 and exhaust valve 2-11.

SB8: Take out the DPF and complete the machining process.

In an optional embodiment, a plurality of universal wheels may also be provided at the bottom of the cabinets 2-14 to facilitate the overall movement of the equipment.

The function and effect of the second embodiment

In the second embodiment, in order to improve the heating speed, according to the ventilation of the loading tool 2-7, the heating device 2-6 is designed to force the hot air into the DPF, and the hot air circulates in the closed pipe, which improves the heating performance. efficiency, reducing energy consumption.

In the second embodiment, it mainly consists of an air inlet pipe 2-3, an air circulation pipe 2-1, an air outlet pipe 2-13, an air heating device 2-6, a circulating fan 2-4, an exhaust pipe 2-10 and a loading tool 2- 7 structure, so that hot air (and cold air) can quickly pass through the inside of the DPF, which greatly improves the heating speed (and cooling speed) of the DPF, improves the processing efficiency of the DPF, and ensures the processing instructions of the DPF.

In the second embodiment, the high-temperature air passes through the pores of the DPF by utilizing the air permeability of the DPF itself, which effectively transfers the heat to the DPF and greatly improves the heating rate; the pipeline-type internal circulation design effectively dissipates heat. It is transmitted to the DPF, which reduces the loss of heat dissipation and saves energy. It can not only be used to heat the DPF, but also air-cooled the DPF after the heating is completed. One machine is multi-purpose.

The above embodiments are preferred cases of the present invention, and are not intended to limit the protection scope of the present invention.

In the first embodiment, the exhaust valve 1-302 and the return valve 1-232 are linked valves. In actual use, the exhaust valve 1-302 and the return valve 1-232 can also be set to be individually controlled by the device 1- 90 controlled electronically controlled valve.

In the first embodiment, the air flow driving unit 1-21 is arranged between the air flow return unit 1-23 and the air flow input unit 1-25. In actual use, the air flow driving unit 1-21 can also be arranged in other The position, for example, is set between the two pipelines of the air flow return unit 1-23 (it can be the position in the second embodiment), or it can be set at other positions other than the air flow return unit 1-23, as long as the air flow can be guaranteed. The flow driving unit 1-21 can normally provide the power to flow the air flow.

Claims

A particle filter cleaning device for cleaning particles deposited in a particle filter by a high-temperature air flow, characterized in that it includes:

a cleaning chamber for placing the particulate filter;

a heating unit for heating the air flow;

an air flow driving unit for providing a flow driving force to the air flow;

an air flow input unit for inputting the high-temperature air flow formed after the heating unit is heated into the cleaning chamber;

an air flow output unit for outputting the high temperature air flow in the cleaning chamber; and

The air flow return unit returns the high temperature air flow from the air flow output unit to make the high temperature air flow circulate.
The particle filter cleaning device according to claim 1, wherein:

Wherein, the air flow driving unit is arranged between the air flow output unit and the air flow return unit,

The heating unit is provided between the air flow return unit and the air flow input unit.
The particulate filter cleaning device according to claim 2, further comprising:

an intake unit for introducing outside air to the cleaning chamber, having an intake valve for controlling the introduction of the outside air; and

An exhaust unit for discharging the high-temperature air flow has an exhaust valve for controlling the discharge of the high-temperature air flow.
The particulate filter cleaning device according to claim 3, wherein:

Wherein, the air flow return unit has a return valve for controlling the return of the high temperature air flow.
The particle filter cleaning device according to claim 2, wherein:

Wherein, the pipeline of the high temperature air flow input unit is communicated with the lower side of the cleaning chamber,

The pipe of the high temperature air flow output unit is communicated with the upper side of the cleaning chamber,

The heating unit is disposed below the cleaning chamber.
The particle filter cleaning device according to claim 1, wherein:

Wherein, the bottom of the cleaning chamber is provided with a support part matched with the particle filter, and the support part is communicated with the high temperature air flow input unit.
The particle filter cleaning device according to claim 6, wherein:

Wherein, the support part includes a support member, the support member is cylindrical and in the shape of a truncated cone with a big upper and a small lower, and the bottom of the supporting member is communicated with the high temperature air flow input unit.
The particle filter cleaning device according to claim 1, wherein:

Wherein, the cleaning chamber includes a thermal insulation cavity and a thermal insulation door installed on the thermal insulation cavity,

Both the thermal insulation cavity and the thermal insulation door include a metal layer and a thermal insulation layer disposed outside the metal layer, and the metal layer is provided with a plurality of through holes,

The pipes of the air flow driving unit, the air flow return unit, the high temperature air flow input unit, and the high temperature air flow output unit are all thermal insulation pipes.
The particle filter cleaning device according to claim 1, wherein:

Wherein, the temperature of the high-temperature air flow is 550°C to 700°C, and the cleaning time is 5min-30min.
A particle filter cleaning device, characterized in that it includes:

cabinet;

A particle filter cleaning device, mounted on the cabinet, for cleaning particles deposited in the particle filter; and

a control device for controlling the operation of the particulate filter cleaning device,

Wherein, the particulate filter cleaning device is the particulate filter cleaning device according to any one of claims 1-9.