CN216974991U - Automobile particle catcher trapping amount detection and purification device - Google Patents

Abstract

The utility model discloses a device for detecting and purifying the trapping amount of an automobile particle trap, which comprises a particle trap body, wherein the inlet end of the particle trap body is fixedly connected with one end of an air inlet pipe, the other end of the air inlet pipe is fixedly connected with an engine, the bottom of the air inlet pipe is communicated with one end of an exhaust pipe, and the other end of the exhaust pipe is fixedly connected with an exhaust fan. This device is through setting up devices such as temperature sensor, pressure sensor, exhaust tube, air exhauster, recoil pipe, air compressor machine, supersonic generator, cleaner case, water tank, heating device and sewage case, makes this internal adnexed carbonaceous granule of particulate trap can be got rid of completely through multiple purification measure, and it is single to have solved traditional device simultaneously, the problem of false retrieval appears easily. In addition, the flat U-shaped design of the exhaust pipe enables the tail gas speed to slow down the contact time with the filter element to be longer, and the purification effect is better.

Description

A device for detecting and purifying the collected amount of an automobile particulate trap

technical field

The utility model relates to a vehicle tail gas emission detection and purification device, in particular to a vehicle particle trapping amount detection and purification device.

Background technique

At present, particle traps are generally used for the treatment of carbon-containing particles in the exhaust gas. The ash material in the particulate trap refers to the incombustible substances in the exhaust particles, which accumulate in the filter with the cycle of the regeneration process. The blockage of the particle filter in the body pores is the main factor limiting the service life of the particle filter. The accumulated ash material in the particle filter will block the filter body pores. In addition, the accumulated ash will be filtered. A dense ash layer is formed on the wall and end of the inlet port of the body, which deteriorates the working performance of the particulate trap and the engine, such as increasing the pressure loss of the particulate trap, reducing the power and economy of the engine, etc., and the existing particulate trap Captured amount detection device and purification method The detection method of the detection device is single, which is prone to false detection, and the carbon-containing particles attached inside the particle trap are difficult to remove, and the purification effect is not obvious.

SUMMARY OF THE INVENTION

The purpose of this utility model is to overcome the deficiencies of the prior art, and to provide a device for detecting and purifying the collected amount of an automobile particulate trap, which has a high detection accuracy and can efficiently remove the carbon-containing particles attached to the inside of the particulate trap. obvious.

To achieve the above object, the utility model provides the following technical solutions:

The utility model relates to a device for detecting and purifying the collection amount of an automobile particulate trap, comprising a particulate trap body, and an air inlet of the particulate trap body is fixedly connected to one end of an intake pipe through an intake valve. The other end of the intake pipe is fixedly connected with the exhaust pipe of the engine, and the bottom of the exhaust port of the particulate trap body is fixedly connected to one end of the exhaust pipe through an exhaust valve, on the inner wall of the intake pipe close to the particulate trap body A first temperature sensor and a first pressure sensor are respectively provided, the bottom of the intake pipe is communicated with one end of the exhaust pipe through an exhaust valve, and the other end of the exhaust pipe is fixedly connected with the inlet of the exhaust fan fixed at the bottom of the intake pipe through a bracket, A first filter element is installed in the air extraction pipe, a second temperature sensor and a second pressure sensor are respectively provided on the inner wall of the air outlet pipe on the side close to the exhaust valve, and the air outlet pipe is sequentially arranged from left to right. The second filter element, the third filter element and the fourth filter element;

The top of one side of the exhaust port of the particle trap body is fixedly connected with one end of the recoil pipe, and the other end of the recoil pipe is connected to the recoil valve, the heating box and the air compressor in sequence; A plurality of nozzles and spray heads are installed on the inner wall of the exhaust port end of the device body along the ring, and each nozzle is connected to the booster pump set in the water tank through a water pipe installed with a nozzle valve; each spray head is installed with a The cleaning agent water pipe of the spray valve is connected with the cleaning water pump arranged in the cleaning agent tank, and the ultrasonic generator is communicated with the side wall of the exhaust port side of the particle trap body through the ultrasonic pipe installed with the ultrasonic valve. The air compressor, ultrasonic generator, cleaning agent tank and water tank are all fixed at the bottom of the car;

There is a groove under the particle trap body, the groove is fixedly connected with the sewage tank through the sewage tank water pipe provided with the sewage tank valve, the sewage tank is fixed on the bottom of the car, and all the places close to the particle trap body side are connected. A carbon particle detector is arranged on the inner wall of the water pipe of the sewage tank, and an alarm is installed in the car;

The signal output ends of the first temperature sensor, the first pressure sensor, the second temperature sensor and the second pressure sensor are all connected with the signal input end of the ECU control unit through control lines, and the signal output ends of the ECU control unit are respectively connected with the exhaust fan. The signal input end of the air compressor, the signal input end of the air compressor, the signal input end of the heating plate, the signal input end of the ultrasonic generator, the signal input end of the cleaning water pump, the signal input end of the spray valve, the signal input end of the ultrasonic valve, The signal input end of the recoil valve, the signal input end of the nozzle valve, the signal input end of the booster pump, the signal input end of the suction valve, the signal input end of the exhaust valve, the signal input end of the sewage tank valve, the intake valve The signal input end of the alarm and the signal input end of the alarm are connected through the control line.

The beneficial effects of the present utility model are as follows:

(1) In the present invention, by setting the first temperature sensor, the first pressure sensor, the second temperature sensor and the second pressure sensor, the double detection measures enable the carbon-containing particles attached to the particle trap body to be accurately detected, To avoid missed detection, the temperature and pressure of the air inlet and air outlet are detected by the first temperature sensor, the first pressure sensor, the second temperature sensor and the second pressure sensor, and the value is transmitted to the ECU control unit and displayed on the display screen After coming out, the ECU control unit compares the temperature difference data and pressure difference data with the specified thresholds. If any set of values of the temperature difference data and pressure difference data exceeds the standard, the ECU control unit controls the in-vehicle alarm to remind the driver to prepare to stop for particle capture. The purification of the collector body, the driver can also choose to continue driving according to their own needs.

(2) The utility model makes the carbon-containing particles adhered in the particle trap body through multiple purification measures by arranging an air extraction pipe, an exhaust fan, a recoil pipe, an air compressor, an ultrasonic generator, a cleaning agent tank, a water tank and a sewage tank. The particles can be completely removed. When purifying, the carbon-containing particles attached to the inner wall of the filter channel are cavitated and peeled off and dissolved in the cleaning agent through the cooperation of ultrasonic waves and cleaning agents, and then the operation of the exhaust fan and air compressor is controlled. , After the air compressor compresses the external air, the high-pressure air flows through the backflushing pipe to the inner hole of the particle trap body, backflushing the particle trap body, blowing the carbon-containing particles to the intake pipe, and drying the particle trap at the same time. At this time, the mixed air is drawn by the exhaust fan into the exhaust pipe from the intake pipe, and then discharged after being filtered by the first filter element, which can efficiently remove the carbon-containing particles attached to the particle trap.

(3) The utility model is provided with the second filter element, the third filter element, the fourth filter element and the flat U-shaped air outlet pipe, so that the exhaust gas flowing out from the particle trap body can be further purified, and the flat U-shaped design makes the exhaust gas velocity slow down The contact time with the filter element is longer, and the purification effect is better.

Description of drawings

1 is a front cross-sectional view of the overall structure of a vehicle particle trap collection amount detection and purification device of the present invention;

Fig. 2 is an enlarged view of the structure at place A in Fig. 1 of the utility model;

Fig. 3 is the operational principle block diagram of the device shown in Fig. 1;

FIG. 4 is a flowchart of an operation method of the apparatus shown in FIG. 1 .

The reference symbols in the figure are: 1. Particulate trap body; 2. Intake pipe; 3. Engine; 4. First temperature sensor; 5. First pressure sensor; 6. Exhaust pipe; 7. First filter element; 8 , exhaust fan; 9, bracket; 10, air outlet; 11, second temperature sensor; 12, second pressure sensor; 13, second filter element; 14, third filter element; 15, fourth filter element; 16, recoil pipe ; 17, air compressor; 18, heating box; 19, heating plate; 20, ultrasonic generator; 21, cleaning agent tank; 22, ultrasonic tube; 23, cleaning agent water pipe; 24, cleaning water pump; 25, spray head; 26, spray valve; 27, ultrasonic valve; 28, recoil valve; 29, nozzle valve; 30, booster pump; 31, water pipe; 32, water tank; 33, nozzle; 34, suction valve; 35, exhaust valve ; 36, sewage tank water pipe; 37, sewage tank valve; 38, sewage tank; 39, carbon particle detector; 40, intake valve; 41, ECU control unit; 42, alarm.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

According to the structure of the exhaust gas passing through, the existing automobile parts are: engine 3-intake pipe 2 (connected with the exhaust pipe of the engine)-intake valve 40-particulate trap body 1-exhaust valve 35-outlet pipe 10, The utility model is an improvement to the existing automobile structure.

As shown in the accompanying drawings, the utility model provides a technical scheme:

A device for detecting and purifying the collection amount of an automobile particulate trap, comprising a particulate trap body 1, and an air inlet of the particulate trap body 1 is fixedly connected to one end of an intake pipe 2 through an intake valve 40. The other end of the intake pipe 2 is fixedly connected with the exhaust pipe of the engine 3, and a first temperature sensor 4 and a first pressure sensor 5 are respectively provided on the inner wall of the intake pipe 2 close to the particle trap body 1. The bottom is communicated with one end of the suction pipe 6 through the suction valve 34, the other end of the suction pipe 6 is fixedly connected with the inlet of the suction fan 8 fixed at the bottom of the intake pipe 2 through the bracket 9, and the first filter element is installed in the suction pipe 6. 7. The first filter element 7 can be fixed in the exhaust pipe 6 through a flange, and the bottom of the exhaust port end of the particle trap body 1 is fixedly connected to one end of the exhaust pipe 10 through an exhaust valve 35. A second temperature sensor 11 and a second pressure sensor 12 are respectively provided on the inner wall of the outlet pipe 10 on the side of the valve 35, and the second filter element 13 and the third filter element 14 are sequentially arranged in the outlet pipe 10 from left to right. and the fourth filter element 15.

Preferably, the air outlet pipe 10 is set in a flat U shape, the second filter element 13, the third filter element 14 and the fourth filter element 15 can be fixed in the air outlet pipe 10 through flanges, and the third filter element 14 is arranged in the U-shape. At the concave position of the air outlet pipe 10, the second filter element 13, the third filter element 14, the fourth filter element 15 and the flat U-shaped air outlet pipe 10 are arranged, so that the exhaust gas flowing out from the particle trap body 1 can be further purified. The flat U-shaped design makes the exhaust gas velocity slow down and the contact time with the filter element is longer, and the purification effect is better.

The top of the exhaust port side of the particle trap body 1 is fixedly connected to one end of the recoil pipe 16 , and the other end of the recoil pipe 16 is connected to the recoil valve 28 , the heating box 18 and the air compressor 17 in sequence. As an embodiment of the present invention, the heating box 18 is provided with a plurality of heating sheets 19 at equal intervals.

A plurality of nozzles 33 and spray heads 25 are annularly installed on the inner wall of the exhaust port end of the particle trap body 1, and each nozzle 33 is connected to the water tank 32 through a water pipe 31 installed with a nozzle valve 29. Each spray head 25 is connected with the cleaning water pump 24 provided in the cleaning agent tank 21 through the cleaning agent water pipe 23 installed with the spray valve 26, and the ultrasonic generator 20 is connected with the particle trap body 1. The side walls on one side of the exhaust port communicate with each other through an ultrasonic tube 22 on which an ultrasonic valve 27 is installed. The air compressor 17, the ultrasonic generator 20, the cleaning agent tank 21 and the water tank 32 are all fixed at the bottom of the vehicle.

A groove is opened under the particle trap body 1, and the groove is fixedly connected to the sewage tank 38 through the sewage tank water pipe 36 provided with the sewage tank valve 37. A carbon particle detector 39 is installed on the inner wall of the sewage tank water pipe 36 on the side of the main body 1, and an alarm 42 is installed in the car.

The signal output ends of the first temperature sensor 4 , the first pressure sensor 5 , the second temperature sensor 11 and the second pressure sensor 12 are all connected with the signal input end of the ECU control unit 41 through control lines. The signal output end is respectively connected with the signal input end of the exhaust fan 8, the signal input end of the air compressor 17, the signal input end of the heating plate 19, the signal input end of the ultrasonic generator 20, the signal input end of the cleaning water pump 24, and the spray valve 26. The signal input end of the ultrasonic valve 27, the signal input end of the recoil valve 28, the signal input end of the nozzle valve 29, the signal input end of the booster pump 30, the signal input end of the suction valve 34, the exhaust gas The signal input end of the valve 35, the signal input end of the sewage tank valve 37, the signal input end of the intake valve 40, and the signal input end of the alarm 42 are connected through control wires.

The parts not involved in the device are the same as the prior art or can be implemented by using the prior art.

The control process of this device is as follows:

Step 1. After the regeneration and purification of the particulate trap body 1 is completed, the first temperature sensor 4, the first pressure sensor 5, the second temperature sensor 11 and the second pressure sensor 12 are used to monitor the air inlet and outlet of the particulate trap in real time. The ECU control unit 41 subtracts the temperature value output by the second temperature sensor from the temperature value output by the first temperature sensor to obtain the temperature change value ΔT and outputs the second pressure sensor output The pressure value output by the first pressure sensor is subtracted from the pressure value output by the first pressure sensor to obtain the pressure change value △P, and then it is judged whether the temperature change value △T and the pressure change value △P exceed the specified temperature difference threshold T _max and pressure difference threshold P _max , if △ Any set of values in T and ΔP exceeds the specified temperature difference threshold T _max or pressure difference threshold P _max , then the ECU control unit 41 controls the alarm 42 in the car to issue an alarm to remind the driver to prepare to stop and carry out the particle trap body 1 The driver can also choose to continue driving;

Step 2: During purification, the driver stops the vehicle, and the ECU control unit 41 starts the purification process control. The process is as follows: the ECU control unit 41 pushes the backflush valve 28, the water tank valve 29, the suction valve 34, the exhaust valve 35, and the sewage tank valve 37. The intake valve 40 outputs a close control signal, then outputs an open signal to the spray valve 26, and outputs a start signal to the cleaning water pump 24. The cleaning water pump 24 extracts the cleaning agent in the cleaning agent tank 21 and sprays it into the particle trap through the spray head 25. In the main body 1, the ultrasonic valve 27 is controlled to open, and the ultrasonic generator 20 is activated. Under the action of the ultrasonic wave, the cleaning agent has cavitation, and continuously impacts the carbon-containing particles attached to the inner wall of the particle trap main body 1, making it It is peeled off and dissolved in the cleaning agent, and this process lasts for more than 35 minutes;

Step 3: Control the ultrasonic generator 20 and the cleaning water pump 24 to stop working through the ECU control unit 41, close the spray valve 26 and the ultrasonic valve 27, then control the sewage tank valve 37 and the nozzle valve 29 to open, start the booster water pump 30, and the booster pump 30. The clean water in the water tank 32 is extracted through the nozzle 33 to throttle and increase the speed to wash the particle trap body 1, so that the cleaning agent containing the exfoliated carbon-containing particles is cleaned. The carbon-containing particle detector located on the inner wall of the sewage tank water pipe 36 39 Monitor the amount of carbon-containing particles M contained in the sewage in real time, when the amount of carbon-containing particles is lower than the pre-set value M _lim , close the booster pump 30 and the nozzle valve 29, and leave the sewage for a period of time to make the sewage run out and then close the sewage Tank valve 37.

Step 4. Open the recoil valve 28, the exhaust valve 34 and the intake valve 40 through the ECU control unit 41, and then drive the exhaust fan 8, the air compressor 17 and the heating box 18 to work. After the air compressor 17 compresses the external air, After the heating box 18 is heated up, the high-pressure hot air flows through the backflush pipe 16 to backflush the particle trap body 1 , blowing the uncleaned and residual carbon-containing particles to the intake pipe 2 and blowing the interior of the particle trap body 1 . Drying, at this time, the mixed air is drawn by the exhaust fan 8 into the exhaust pipe 6 from the intake pipe 2, and then discharged after being filtered by the first filter element 7;

Step 5. After 10 minutes of blowing and exhausting, turn off the exhaust fan 8, the air compressor 17 and the heating box 18 through the ECU control unit 41, and then close the recoil valve 28 on the recoil pipe 16 and the pump on the exhaust pipe 6. The air valve 34 opens the exhaust valve 35 on the air outlet pipe 10, the vehicle starts, and the first temperature sensor 4, the first pressure sensor 5, the second temperature sensor 11 and the second pressure sensor 12 detect the difference between the air inlet and the air outlet. When the temperature and pressure change, the ECU control unit 41 subtracts the temperature value output by the second temperature sensor from the temperature value output by the first temperature sensor to obtain the temperature change value ΔT1 and subtracts the pressure value output by the second pressure sensor from the first pressure sensor. The pressure value obtained is the pressure change value ΔP1, and the temperature change value ΔT1 and the pressure change value ΔP1 do not exceed the specified temperature difference threshold T _max and pressure difference threshold P _max , then the purification is completed, otherwise step 2-step 5 is repeated.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, apparatus, article, or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such process, apparatus, article or equipment.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (3)

1. A device for detecting and purifying the collected amount of an automobile particulate trap, characterized in that: it comprises a particulate trap body (1), and the air inlet of the particulate trap body passes through an intake valve (40) and an intake pipe. One end of (2) is fixedly connected, the other end of the intake pipe is fixedly connected with the exhaust pipe of the engine (3), and the bottom of the exhaust port end of the particle trap body is connected to the exhaust pipe (35) through the exhaust valve (35). 10) is fixedly connected at one end, and a first temperature sensor (4) and a first pressure sensor (5) are respectively provided on the inner wall of the intake pipe close to the particle trap body, and the bottom of the intake pipe passes through the suction valve (34) It is communicated with one end of the exhaust pipe (6), the other end of the exhaust pipe is fixedly connected with the inlet of the exhaust fan (8) fixed at the bottom of the intake pipe through the bracket (9), and a first filter element (7) is installed in the exhaust pipe , a second temperature sensor (11) and a second pressure sensor (12) are respectively arranged on the inner wall of the outlet pipe (10) on the side close to the exhaust valve (35), in the outlet pipe from left to right A second filter element (13), a third filter element (14) and a fourth filter element (15) are arranged in sequence; The top of one side of the exhaust port of the particle trap body is fixedly connected to one end of the recoil pipe (16), and the other end of the recoil pipe is sequentially connected to the recoil valve (28), the heating box (18) and the air pressure A machine (17); a plurality of nozzles (33) and a spray head (25) are annularly installed on the inner wall of the exhaust port end of the particle trap body, and each nozzle is provided with a nozzle valve (29) The water pipe (31) is connected with the booster water pump (30) arranged in the water tank (32); each spray head (25) is connected to the cleaning agent water pipe (23) provided with the spray valve (26) through the cleaning agent water pipe (23) installed in the cleaning agent The cleaning water pump (24) in the box (21) is connected, and an ultrasonic pipe (22) provided with an ultrasonic valve (27) is passed between the ultrasonic generator (20) and the side wall of the exhaust port side of the particle trap body. connected, the air compressor, ultrasonic generator, cleaning agent tank and water tank are all fixed on the bottom of the car; A groove is formed under the particle trap body, and the groove is fixedly connected to the sewage tank (38) through the sewage tank water pipe provided with the sewage tank valve. A carbon particle detector (39) is arranged on the inner wall of the sewage tank water pipe (36) on the side, and an alarm (42) is installed in the car; The signal output ends of the first temperature sensor, the first pressure sensor, the second temperature sensor and the second pressure sensor are all connected with the signal input end of the ECU control unit through control lines, and the signal output ends of the ECU control unit are respectively connected with the exhaust fan. The signal input end of the air compressor, the signal input end of the air compressor, the signal input end of the heating plate, the signal input end of the ultrasonic generator, the signal input end of the cleaning water pump, the signal input end of the spray valve, the signal input end of the ultrasonic valve, The signal input end of the recoil valve, the signal input end of the nozzle valve, the signal input end of the booster pump, the signal input end of the suction valve, the signal input end of the exhaust valve, the signal input end of the sewage tank valve, the intake valve The signal input end of the alarm and the signal input end of the alarm are connected through the control line. 2 . The device for detecting and purifying the collection amount of an automobile particle trap according to claim 1 , wherein the air outlet pipe is arranged in a flat U shape, and the second filter element, the third filter element and the fourth filter element are arranged in a flat U shape. 3 . The filter element is fixed in the air outlet pipe through the flange, and the third filter element is arranged at the position of the concave cavity of the U-shaped air outlet pipe. 3 . The device for detecting and purifying the collected amount of an automobile particulate trap according to claim 1 or 2 , wherein a plurality of heating sheets are arranged at equal intervals in the heating box. 4 .

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