EGR cooler with filtering effect

Abstract

The utility model discloses an EGR (Exhaust Gas Recirculation) cooler with a filtering effect, which relates to the technical field of EGR coolers and comprises a machine body and a connecting pipe, the interior of the machine body is connected with a moving plate through a moving mechanism, a through hole is formed in the moving plate, the interior of the machine body is connected with a filter plate through sliding connection, a hard water pipe is arranged in the machine body, the interior of the machine body is connected with a push rod, the front end of the push rod is connected with a connecting plate, and the connecting plate is connected with the interior of the machine body through sliding connection. The front end of the connecting plate makes contact with the drying piece, a ventilator is arranged in the machine body, and a filter screen and an activated carbon plate are arranged in the machine body. Waste gas is primarily filtered through the filter screen, cooled through the cooling liquid in the hard water pipe, secondarily filtered through the filter plate and subjected to third-time filtering through the activated carbon plate, and the filtered waste gas is secondarily cooled through the cooling liquid in the hard water pipe, dried through the drying piece and discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of EGR coolers, in particular to an EGR cooler with filtering effect. Background Art

[0002] As an important in-engine purification measure for diesel engines, the exhaust gas recirculation system is mainly composed of EGR valves, EGR coolers and other devices, which helps to reduce the NOx emissions of diesel engines. In large diesel engines, the maximum amount of exhaust gas entering is about 40%. After long-term use, the particulate matter in the EGR system is affected by the cooling effect of the EGR cooler, and a large amount of carbon particles are attached to the EGR cooler fins, which reduces the heat loss of the gas and reduces the cooling capacity of the EGR cooler. Therefore, it is more important for the EGR cooler to have filtering. The existing devices still have some defects, such as;

[0003] For example, the EGR particle filter device with self-sensing signal is disclosed as CN204591532U. When the technology is used, the air intake chamber of the EGR particle filter device is connected to the EGR valve by a pipeline, and the exhaust chamber is directly connected to the EGR cooler. The filter element is installed in the filter chamber, and the air intake chamber and the air filter chamber of the EGR particle filter device are removable, so it is convenient to replace the filter element. The filter element is made of silicon carbide material, which has heat resistance, corrosion resistance, strong adsorption and filtering properties. A back pressure sensor is installed at the air outlet at the upper end of the air intake chamber. When the filtered particles gather to a certain extent and the filter element is blocked, the gas pressure in the air intake chamber increases, and the pressure overcomes the tension of the spring, pushing up the pressure plate at the upper end of the back pressure sensor spring, making a chirping sound as a signal for filter element replacement.

[0004] The above device has some problems. It is troublesome to use, and the stability of the filter element is not good. The exhaust gas is more likely to be blocked during use, the filter element needs to be replaced more frequently, it is cumbersome to use, and the filtering efficiency is low.

[0005] Therefore, we propose an EGR cooler with filtering effect to solve the above problems. Utility Model Content

[0006] The utility model aims to provide an EGR cooler with a filtering effect, so as to solve the problem that the EGR cooler with a filtering effect on the market currently mentioned in the background technology is inconvenient to use and has a poor filtering effect.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an EGR cooler with filtering effect, comprising a body and a connecting pipe;

[0008] The interior of the machine body is connected to the moving plate through a moving mechanism, and a through hole is provided inside the moving plate, the interior of the machine body is connected to the filter plate through a sliding connection, and a hard water pipe is provided inside the machine body, the interior of the machine body is connected to the push rod, and the front end of the push rod is connected to the connecting plate, and the connecting plate is connected to the interior of the machine body through a sliding connection, the front end of the connecting plate is in contact with the drying sheet, a ventilation fan is provided inside the machine body, and a filter screen and an activated carbon plate are provided inside the machine body;

[0009] A fixing block is arranged inside the machine body, and the upper part of the fixing block is connected with a sliding block, and the sliding block is connected with a screw rod through a threaded connection, and the screw rod is connected with the inside of the fixing plate.

[0010] As the preferred technical solution of the utility model, the left and right ends of the screw rod rotate in opposite directions, and sliders are connected above both ends of the screw rod, and fixed blocks are connected below the sliders, and the fixed blocks are respectively engaged with the slots inside the machine body and the connecting tube.

[0011] As a preferred technical solution of the utility model, the moving mechanism includes a stepper motor, and the stepper motor is arranged inside the body, and the front end of the stepper motor is connected to a gear, the gear is meshed with a rack, and the rack is connected to the moving plate.

[0012] As a preferred technical solution of the utility model, through holes are arranged inside the body, and the through holes are arranged in an array with respect to the moving plate and the inside of the body, and the through holes inside the moving plate and the through holes inside the body are staggered.

[0013] As a preferred technical solution of the utility model, the hard water pipe is symmetrically arranged about the inner center of the machine body, and the water inlet and the water outlet on the hard water pipe are connected to the outside, and the water source added to the hard water pipe is coolant.

[0014] As a preferred technical solution of the utility model, the push rods are symmetrically arranged about the center of the machine body, and the front ends of the push rods are connected with connecting plates, and the connecting plates are respectively in contact with the two ends of the drying sheet for fixing.

[0015] As a preferred technical solution of the utility model, a handle is arranged above the filter plate, and the surface of the handle is provided with anti-slip grooves, and the handle is made of plastic.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The device is provided with a filtering and cooling structure. When in use, the stepper motor is started to drive the gear to rotate. Due to the meshing of the gear and the rack, the rack drives the moving plate to move, and the moving plate is separated from the body. Since the through holes inside the body and the moving plate are staggered, the ventilation fan is started to extract the exhaust gas inside the connecting pipe. The exhaust gas is first filtered through the filter screen for preliminary filtration, cooled by the coolant in the hard water pipe, filtered through the filter plate for secondary filtration, and filtered through the activated carbon plate for tertiary filtration. The filtered exhaust gas is cooled by the coolant in the hard water pipe, dried by the drying sheet, and then discharged;

[0018] 2. The device is provided with a convenient use structure. When in use, after the machine body and the connecting pipe are in contact, the fixing plate is taken out, and the handle on one side of the fixing plate is turned, so that the handle drives the screw rod to rotate, and the rotation of the screw rod drives the sliders above the two ends to move at the same time, so that the slider drives the fixing block below to move to the slots on the surface of the machine body and the connecting pipe respectively, and then the fixing block is pressed in to connect the machine body and the connecting pipe. When the drying effect becomes poor after the drying sheet has been used for too long, the starting push rod drives the connecting plate to move in the slide groove inside the machine body, so that the front ends of the connecting plates on both sides and the drying sheet are detached from the fixation, so that the drying sheet can be removed for replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main cross-sectional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the fixed plate structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the side structure of the ventilation fan of the utility model;

[0022] Figure 4 This is a side view structural diagram of a hard water pipe of the utility model;

[0023] Figure 5 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the stepping motor of the utility model.

[0025] In the figure: 1. body; 2. connecting pipe; 3. fixing plate; 4. slider; 5. screw rod; 6. fixing block; 7. filter screen; 8. stepping motor; 9. gear; 10. rack; 11. moving plate; 12. through hole; 13. ventilation fan; 14. hard water pipe; 15. filter plate; 16. activated carbon plate; 17. push rod; 18. connecting plate; 19. drying sheet. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] See also Figure 1-6 The utility model provides a technical solution: an EGR cooler with filtering effect, comprising a body 1 and a connecting pipe 2, the inside of the body 1 is connected to a moving plate 11 through a moving mechanism, the moving mechanism comprises a stepping motor 8, and the stepping motor 8 is arranged inside the body 1, and the front end of the stepping motor 8 is connected to a gear 9, the gear 9 is meshed with a rack 10, and the rack 10 is connected to the moving plate 11, and a through hole 12 is arranged inside the moving plate 11, and the through hole 12 is arranged inside the body 1, and the through hole 12 is arranged in an array with respect to the moving plate 11 and the inside of the body 1, and the through hole 12 inside the moving plate 11 and the through hole 12 inside the body 1 are staggered, the inside of the body 1 is connected to a filter plate 15 through a sliding connection, a handle is arranged above the filter plate 15, and the surface of the handle is arranged There are anti-slip patterns, and the handle is made of plastic. A hard water pipe 14 is arranged inside the body 1. The hard water pipe 14 is symmetrically arranged about the center of the body 1. The water inlet and the water outlet on the hard water pipe 14 are connected to the outside, and the water source added to the hard water pipe 14 is a coolant. The body 1 is connected to a push rod 17. The push rod 17 is symmetrically arranged about the center of the body 1. The front end of the push rod 17 is connected to a connecting plate 18, and the connecting plate 18 is respectively fixed to the two ends of the drying sheet 19, and the front end of the push rod 17 is connected to the connecting plate 18, and the connecting plate 18 is connected to the inside of the body 1 through a sliding connection. The front end of the connecting plate 18 is in contact with the drying sheet 19. A ventilation fan 13 is arranged inside the body 1, and a filter screen 7 and an activated carbon plate 16 are arranged inside the body 1;

[0028] When in use, the stepper motor 8 is started to drive the gear 9 to rotate. Since the gear 9 and the rack 10 are meshed, the rack 10 drives the moving plate 11 to move, so that the moving plate 11 and the inside of the machine body 1 are separated. Since the through holes 12 inside the machine body 1 and the moving plate 11 are staggered, the ventilation fan 13 is started to extract the exhaust gas inside the connecting pipe 2. The exhaust gas is first filtered through the filter screen 7, cooled by the coolant in the hard water pipe 14, filtered again by the filter plate 15, and then filtered by the activated carbon plate 16. After three filtrations, the filtered exhaust gas is cooled by the coolant in the hard water pipe 14 for a second time, and then dried by the drying sheet 19 before being discharged. When the internal filter plate 15 has been used for a long time and the filtering effect has deteriorated, the filter plate 15 is pulled out for cleaning or replacement by holding the handle on the upper part of the machine body 1. When the drying effect of the drying sheet 19 has been used for a long time and the drying effect has deteriorated, the push rod 17 is started to drive the connecting plate 18 to move in the slide groove inside the machine body 1, so that the front ends of the connecting plates 18 on both sides and the drying sheet 19 are detached from the fixing, so that the drying sheet 19 can be removed for replacement;

[0029] A fixing block 6 is provided inside the machine body 1, and the top of the fixing block 6 is connected to the slider 4, and the slider 4 is connected to the screw rod 5 through a threaded connection, the screw rod 5 is connected to the inside of the fixing plate 3, the left and right ends of the screw rod 5 rotate in opposite directions, and the tops of both ends of the screw rod 5 are connected to the slider 4, and the bottom of the slider 4 is connected to the fixing block 6, and the fixing block 6 is respectively engaged with the card slots inside the machine body 1 and the connecting pipe 2;

[0030] First, when using, make the machine body 1 and the connecting tube 2 contact each other, take out the fixing plate 3, turn the handle on one side of the fixing plate 3, so that the handle drives the screw rod 5 to rotate, and the screw rod 5 rotates and drives the sliders 4 above the two ends to move at the same time, so that the slider 4 drives the fixing block 6 below to move to the card grooves on the surface of the machine body 1 and the connecting tube 2 respectively, and then press the fixing block 6 into the machine body 1 and the connecting tube 2, so that the machine body 1 and the connecting tube 2 are connected.

[0031] Working principle: When using the EGR cooler with a filtering effect, first, after the body 1 and the connecting pipe 2 are in contact, the fixing plate 3 is taken out, and the handle on one side of the fixing plate 3 is turned, so that the handle drives the screw rod 5 to rotate, and the screw rod 5 rotates and drives the sliders 4 above the two ends to move, so that the slider 4 drives the fixing block 6 below to move to the slots on the surface of the body 1 and the connecting pipe 2 respectively, and then the fixing block 6 is pressed in, so that the body 1 and the connecting pipe 2 are connected. When in use, start the stepper motor 8 to drive the gear 9 to rotate. Since the gear 9 and the rack 10 are meshed, the rack 10 drives the moving plate 11 to move, so that the moving plate 11 and the inside of the body 1 are separated. Since the through holes 12 inside the body 1 and the moving plate 11 are staggered, the ventilation fan 1 is started at this time. 3. The exhaust gas inside the connecting pipe 2 is extracted. The exhaust gas is first preliminarily filtered through the filter screen 7, cooled by the coolant in the hard water pipe 14, filtered again by the filter plate 15, and filtered tertiary by the activated carbon plate 16. The filtered exhaust gas is cooled by the coolant in the hard water pipe 14, and then dried by the drying sheet 19 and discharged. When the filtering effect of the internal filter plate 15 deteriorates after being used for a long time, the filter plate 15 is pulled out for cleaning or replacement by holding the handle on the upper part of the machine body 1. When the drying effect of the drying sheet 19 deteriorates after being used for a long time, the push rod 17 is started to drive the connecting plate 18 to move in the slide groove inside the machine body 1, so that the front ends of the connecting plates 18 on both sides and the drying sheet 19 are detached from the fixing, so that the drying sheet 19 is removed for replacement.

[0032] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An EGR cooler with filtering effect, comprising a body (1) and a connecting pipe (2); Features: The interior of the machine body (1) is connected to a moving plate (11) via a moving mechanism, and a through hole (12) is provided inside the moving plate (11); the interior of the machine body (1) is connected to a filter plate (15) via a sliding connection, and a hard water pipe (14) is provided inside the machine body (1); the interior of the machine body (1) is connected to a push rod (17), and the front end of the push rod (17) is connected to a connecting plate (18), and the connecting plate (18) is connected to the interior of the machine body (1) via a sliding connection, and the front end of the connecting plate (18) is in contact with a drying sheet (19); a ventilation fan (13) is provided inside the machine body (1), and a filter screen (7) and an activated carbon plate (16) are provided inside the machine body (1); A fixed block (6) is arranged inside the machine body (1), and the upper part of the fixed block (6) is connected to the slider (4), and the slider (4) is connected to the screw rod (5) through a threaded connection, and the screw rod (5) is connected to the inside of the fixed plate (3).

2. The EGR cooler with filtering effect according to claim 1, characterized in that: The left and right ends of the screw rod (5) rotate in opposite directions, and the upper parts of both ends of the screw rod (5) are connected to sliders (4), and the lower parts of the sliders (4) are connected to fixing blocks (6), and the fixing blocks (6) are respectively engaged with the internal slots of the machine body (1) and the connecting pipe (2).

3. The EGR cooler with filtering effect according to claim 1, characterized in that: The moving mechanism comprises a stepping motor (8), and the stepping motor (8) is arranged inside the machine body (1), and the front end of the stepping motor (8) is connected to a gear (9), the gear (9) is meshed with a rack (10), and the rack (10) is connected to a moving plate (11).

4. The EGR cooler with filtering effect according to claim 1, characterized in that: The body (1) is provided with through holes (12) inside, and the through holes (12) are arranged in an array with respect to the movable plate (11) and the inside of the body (1), and the through holes (12) inside the movable plate (11) and the through holes (12) inside the body (1) are arranged in an alternating manner.

5. The EGR cooler with filtering effect according to claim 1, characterized in that: The hard water pipe (14) is symmetrically arranged about the inner center of the machine body (1), and the water inlet and the water outlet on the hard water pipe (14) are both connected to the outside, and the water source added to the hard water pipe (14) is a cooling liquid.

6. The EGR cooler with filtering effect according to claim 1, characterized in that: The push rod (17) is symmetrically arranged with respect to the center of the machine body (1), and the front end of the push rod (17) is connected to a connecting plate (18), and the connecting plate (18) is respectively in contact with two ends of the drying sheet (19) for fixing.

7. The EGR cooler with filtering effect according to claim 1, characterized in that: A handle is provided above the filter plate (15), and the surface of the handle is provided with anti-slip grooves, and the handle is made of plastic.

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