Dustproof driving and guiding device of DPF pneumatic purging and cleaning equipment

Abstract

The utility model provides a dustproof driving and guiding device of DPF pneumatic blowing and cleaning equipment. The dustproof driving and guiding device comprises a box body, a protective cover, a driving mechanism, an air knife clamping mechanism and an air knife. The box body is connected with the protective cover, the driving mechanism is installed inside the box body and the protective cover, the air knife clamping mechanism is connected with the driving mechanism and located outside the protective cover, the air knife is detachably installed on the air knife clamping mechanism, and the driving mechanism drives the air knife on the air knife clamping mechanism to move. The position of the air knife on the air knife clamping mechanism can be adjusted, the air knife is connected with an external air pipe, the driving mechanism drives the air knife on the air knife clamping mechanism to move linearly, external air provides air for the air knife to purge dust particles on the PDF, the driving mechanism is wrapped by the box body and the protective cover, the dust particles on the PDF are prevented from entering the box body and the protective cover, and the PDF is prevented from being damaged. Therefore, the driving mechanism is isolated from dust particles dispersed after blowing, excessive dust particles are prevented from being deposited on the driving mechanism, and smooth movement of the driving mechanism is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of engine parts cleaning, in particular to a dust-proof driving guide device for DPF pneumatic blowing and cleaning equipment. Background Art

[0002] With the growth of global e-commerce, logistics and transportation, serving as a bridge connecting producers and consumers, are experiencing rapid development. Road and sea transportation, as the primary modes of transportation, are experiencing even greater growth, with diesel-fueled trucks and ships being the primary means of transport. The diesel particulate filter (DPF), a device installed in the exhaust system of a diesel engine to capture and reduce particulate emissions, requires regular cleaning and regeneration to comply with increasingly stringent environmental regulations. Pneumatic purging is one of the primary methods for this.

[0003] Pneumatic purging of the DPF involves placing the DPF in a relatively enclosed purge chamber. High-pressure air is used to blow carbon ash particles from each DPF pore in the reverse direction along the pore channels, thereby cleaning and regenerating the DPF. The purge chamber is then filled with the carbon ash particles, which are gradually discharged through the exhaust system.

[0004] The DPF can be positioned in two ways: stationary or rotating. When the DPF is stationary, the air knife moves in two directions to purge and clean every micropore in the DPF. When the DPF is rotating, the air knife only needs to move back and forth in a straight line in one direction, coordinating with the rotation of the DPF, to purge and clean every micropore in the DPF.

[0005] In both DPF placement methods, the air knife needs to move in a straight line in a space filled with carbon ash particles, and it is necessary to install dust-proof devices on its drive and guide devices.

[0006] In one existing example, the DPF rotates around its axis while the air knife moves linearly in one direction. The air knife is driven by a linear module powered by a stepper motor, guided by a polished rod and linear bearings. The polished rod's ends are fixed to the walls of the device's purge chamber, and the linear bearings slide on the polished rod, which is then enclosed in a housing. Because the housings for the linear module and the polished rod need to provide a path for the moving parts to move, they lack a good seal. Dust particles that permeate the purge chamber can enter the drive and guide spaces through these gaps and accumulate on the surfaces of the relatively moving parts. Over time, this can cause motion stagnation and difficulty, affecting motion accuracy. In more serious cases, this can lead to difficulty in movement or damage and failure of the moving parts. Furthermore, because the purge chamber is typically constructed of sheet metal, precise mounting of the polished rod at both ends is difficult, making installation and commissioning challenging. The air knife is adjusted vertically using an electric actuator. While this allows for electric adjustment, it is costly, complex to control, and unreliable. The air knife can collide with the DPF, causing irreversible damage and rendering it useless.

[0007] In the second existing example, the DPF is stationary, while the air knife rotates and moves linearly on a flat surface. Rotation is achieved via an explosion-proof stepper motor and gear transmission, with bearings used to position the rotating shaft, while linear movement is achieved via the stepper motor's linear module. The seals at the junction of the rotation and linear movement are not completely sealed, allowing dust particles to enter through the gaps and accumulate on the surfaces of the moving parts, causing movement blockage and difficulty. This structure is also complex and costly, while reliability is low. The air knife cannot be adjusted vertically, requiring the replacement of air knife tubes of different lengths to accommodate DPF cleaning at different heights, which is complex and costly.

[0008] In view of this, it is necessary to provide a new type of dust-proof driving guide device for DPF pneumatic purging cleaning equipment to overcome the above-mentioned defects. Utility Model Content

[0009] The purpose of the utility model is to provide a dust-proof driving guide device for DPF pneumatic purging cleaning equipment, wherein the position of the air knife on the air knife clamping mechanism is adjustable and connected to an external air pipe, the driving mechanism drives the air knife on the air knife clamping mechanism to move linearly, and the external gas provides gas to the air knife to purge the dust particles on the PDF, and the driving mechanism is wrapped by a box body and a protective cover to prevent the dust particles on the PDF from entering the box body and the protective cover, thereby isolating the driving mechanism from the dust particles dispersed after purging, which is beneficial to avoiding excessive dust particles from being deposited on the driving mechanism and ensuring smooth movement of the driving mechanism.

[0010] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is implemented as follows: a dust-proof drive guide device of a DPF pneumatic blowing and cleaning equipment, comprising: a box body, a protective cover, a driving mechanism, an air knife clamping mechanism and an air knife; the box body is connected to the protective cover, the driving mechanism is installed inside the box body and the protective cover, the air knife clamping mechanism is connected to the driving mechanism and is located outside the protective cover, the air knife is detachably installed on the air knife clamping mechanism, and the driving mechanism drives the air knife on the air knife clamping mechanism to move.

[0011] Preferably, the driving mechanism includes a screw and a motor, the motor is installed in the box, the screw is inserted and connected to the motor and extends into the shield, one end of the screw is connected to a movable plate, and the air knife clamping mechanism is connected to the movable plate.

[0012] Preferably, the driving mechanism further comprises a guide rod, the guide rod is movably inserted into the box body and the shield, and the guide rod is connected to the air knife clamping mechanism.

[0013] Preferably, the driving mechanism further includes a shaft sleeve, the shaft sleeve is installed in the box body, and the guide rod passes through the shaft sleeve.

[0014] Preferably, the driving mechanism further includes a detection piece, the detection piece is connected to the guide rod and the screw rod, and the detection piece extends in a direction close to the bottom of the box.

[0015] Preferably, a front photoelectric sensor and a rear photoelectric sensor are provided at the bottom of the box. The front photoelectric sensor is located in the box and close to the shield, and the rear photoelectric sensor is located in the box and away from the shield.

[0016] Preferably, a wire-passing opening is provided in the box body near the rear photoelectric sensor.

[0017] Compared with the existing technology, the beneficial effects are: the position of the air knife on the air knife clamping mechanism is adjustable and connected to the external air pipe, the driving mechanism drives the air knife on the air knife clamping mechanism to move linearly, and the external gas provides gas to the air knife to blow away the dust particles on the PDF. The driving mechanism is wrapped by the box and the shield to prevent the dust particles on the PDF from entering the box and the shield, thereby isolating the driving mechanism from the dust particles dispersed after the blowing, which is beneficial to avoid excessive dust particles from being deposited on the driving mechanism and to ensure smooth movement of the driving mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A perspective view of the dust-proof drive guide device of the DPF pneumatic purging and cleaning equipment provided by the present invention.

[0020] Figure 2 for Figure 1 The structure diagram of the dust-proof drive guide device of the DPF pneumatic blowing and cleaning equipment is shown.

[0021] Figure numerals: 1. Box body; 2. Protective cover; 3. Driving mechanism; 31. Screw rod; 32. Motor; 33. Guide rod; 34. Bushing; 35. Detection piece; 36. Moving plate; 4. Air knife clamping mechanism; 5. Air knife; 6. Front photoelectric sensor; 7. Rear photoelectric sensor; 8. Wire passing port; 9. Plum blossom bolt. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and beneficial technical effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are only for the purpose of explaining the present invention and are not intended to limit the present invention.

[0023] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature identified as "first," "second," or "third" may explicitly or implicitly include one or more of such features. Furthermore, "plurality" and "several" refer to two or more, unless otherwise specifically defined.

[0024] See also Figures 1 to 2The utility model provides a dust-proof driving guide device for DPF pneumatic purging cleaning equipment, which is used to linearly drive the air knife 5 to move, including: a box body 1, a shield 2, a driving mechanism 3, an air knife clamping mechanism 4 and an air knife 5; one end of the box body 1 is connected to one end of the shield 2, the driving mechanism 3 is installed inside the box body 1 and the shield 2, the air knife clamping mechanism 4 is connected to the driving mechanism 3 and is located outside the shield 2, the air knife 5 is detachably mounted on the air knife clamping mechanism 4, the position of the air knife 5 on the air knife clamping mechanism 4 is adjustable and connected to an external air pipe, the driving mechanism 3 drives the air knife 5 on the air knife clamping mechanism 4 to move linearly, and the external gas provides gas to the air knife 5 to purge dust particles on the PDF.

[0025] In a preferred embodiment, the drive mechanism 3 includes a screw 31 and a motor 32. The motor 32 is installed in the housing 1. The screw 31 is connected to the motor 32 and extends into the shield 2. One end of the screw 31 is connected to a movable plate 36. The air knife clamping mechanism 4 is connected to the movable plate 36. The motor 32 drives the screw 31 to rotate, and the screw 31 converts the rotational motion into linear motion, thereby driving the air knife 5 on the air knife clamping mechanism 4 to move horizontally.

[0026] In a preferred embodiment, the driving mechanism 3 also includes a guide rod 33, which is movably inserted into the box body 1 and the shield 2, and one end of the guide rod 33 is connected to the air knife clamping mechanism 4. The motor 32 drives the screw rod 31 to rotate, and the screw rod 31 converts the rotational motion into linear motion. The guide rod 33 moves linearly therewith, thereby driving the air knife 5 on the air knife clamping mechanism 4 to move in the horizontal direction.

[0027] In a preferred embodiment, the driving mechanism 3 further includes a shaft sleeve 34 , which is installed in the box body 1 , and the guide rod 33 passes through the shaft sleeve 34 , so that the friction force of the guide rod 33 during movement is reduced by the shaft sleeve 34 .

[0028] In a preferred embodiment, the driving mechanism 3 also includes a detection piece 35, which is connected to the other end of the guide rod 33 and the other end of the screw rod 31, and the detection piece 35 extends toward the bottom of the box body 1. The screw rod 31 converts the rotational motion into linear motion, and the guide rod 33 moves linearly accordingly, thereby driving the detection piece 35 to move in the horizontal direction.

[0029] In a preferred embodiment, a front photoelectric sensor 6 and a rear photoelectric sensor 7 are provided at the bottom of the housing 1. The front photoelectric sensor 6 is located within the housing 1 and close to the protective cover 2, while the rear photoelectric sensor 7 is located within the housing 1 and away from the protective cover 2. The screw rod 31 converts rotational motion into linear motion, and the guide rod 33 moves linearly therewith, thereby driving the detection piece 35 to move horizontally above the front photoelectric sensor 6 and the rear photoelectric sensor 7. The position of the detection piece 35 can be detected by the front photoelectric sensor 6 and the rear photoelectric sensor 7 to determine the movement range of the screw rod 31.

[0030] In a preferred embodiment, a wire passage 8 is provided in the box 1 near the rear photoelectric sensor 7 to facilitate the layout of the circuits in the box 1 .

[0031] The air knife 5 is vertically inserted into the air knife clamping mechanism 4. When adjusting up and down, loosen the plum blossom bolt 9, and the air knife 5 can move up and down on the air knife clamping mechanism 4. When it is in the appropriate position, tighten the plum blossom bolt 11 to fix the air knife. The operation is simple.

[0032] The driving mechanism 3 is wrapped by the box body 1 and the protective cover 2 to prevent dust particles on the PDF from entering the box body 1 and the protective cover 2, thereby isolating the driving mechanism 3 from the dust particles dispersed after blowing, which is beneficial to avoid excessive dust particles from being deposited on the driving mechanism 3 and ensuring smooth movement of the driving mechanism 3.

[0033] The present invention is not limited to what is described in the specification and implementation modes, and therefore additional advantages and modifications can be easily realized by those skilled in the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details, representative devices, and illustrated examples shown and described herein.

Claims

1. A dust-proof drive guide device for a DPF pneumatic purging cleaning device, characterized in that: include: A box body (1), a protective cover (2), a driving mechanism (3), an air knife clamping mechanism (4), and an air knife (5); the box body (1) is connected to the protective cover (2), the driving mechanism (3) is installed inside the box body (1) and the protective cover (2), the air knife clamping mechanism (4) is connected to the driving mechanism (3) and is located outside the protective cover (2), the air knife (5) is detachably installed on the air knife clamping mechanism (4), and the driving mechanism (3) drives the air knife (5) on the air knife clamping mechanism (4) to move.

2. The dust-proof driving guide device of the DPF pneumatic purging cleaning equipment according to claim 1, characterized in that: The driving mechanism (3) comprises a screw rod (31) and a motor (32), wherein the motor (32) is installed in the box (1), the screw rod (31) is connected to the motor (32) and extends into the shield (2), one end of the screw rod (31) is connected to a movable plate (36), and the air knife clamping mechanism (4) is connected to the movable plate (36).

3. The dust-proof driving guide device of the DPF pneumatic purging cleaning equipment according to claim 2, characterized in that: The driving mechanism (3) further comprises a guide rod (33), the guide rod (33) being movably inserted into the box body (1) and the shield (2), and the guide rod (33) being connected to the air knife clamping mechanism (4).

4. The dust-proof driving guide device of the DPF pneumatic purging cleaning equipment according to claim 3, characterized in that: The driving mechanism (3) further comprises a shaft sleeve (34), the shaft sleeve (34) being installed in the box body (1), and the guide rod (33) passing through the shaft sleeve (34).

5. The dust-proof driving guide device of the DPF pneumatic purging cleaning equipment according to claim 4, characterized in that: The driving mechanism (3) further comprises a detection piece (35), the detection piece (35) being connected to the guide rod (33) and the screw rod (31), and the detection piece (35) extending in a direction close to the bottom of the box body (1).

6. The dust-proof driving guide device of the DPF pneumatic purging cleaning equipment according to claim 1, characterized in that: A front photoelectric sensor (6) and a rear photoelectric sensor (7) are provided at the bottom of the box (1); the front photoelectric sensor (6) is located in the box (1) and is distributed close to the protective cover (2); and the rear photoelectric sensor (7) is located in the box (1) and is distributed away from the protective cover (2).

7. The dust-proof driving guide device of the DPF pneumatic purging cleaning equipment according to claim 6, characterized in that: The box body (1) is provided with a wire-passing opening (8) at a position close to the rear photoelectric sensor (7).

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