Sand blasting mechanism for shell of engine tail gas recirculation cooler

Abstract

The invention provides an engine tail gas recirculation cooler shell sand blasting mechanism, and relates to the field of sand blasting mechanisms, the engine tail gas recirculation cooler shell sand blasting mechanism is used for carrying out sand blasting treatment on the inner surface of a cooler shell, and comprises a treatment bin, a left cavity is formed in the left side of the treatment bin, and a right cavity is formed in the right side of the treatment bin; a hinge seat is arranged in the treatment bin, the right end of the hinge seat is connected with a positioning seat, and the right side of the positioning seat is connected with a cross rod which is horizontally arranged and internally hollow. The left end of the cross rod penetrates through the positioning seat and is in pivot joint with the positioning seat, a rod body of the cross rod is in sliding fit with a sliding seat, and the sliding seat is hollow. According to the sand blasting mechanism for the engine tail gas recirculation cooler shell, the positioning base is arranged in the treatment bin, the cross rod is connected to the center of the positioning base, the sliding base is in sliding fit with the cross rod, and the whole cross rod extends into the shell, so that a nozzle can face all areas of the inner wall of the shell in the sand blasting process, and the situation that dead corners exist in sand blasting grinding is avoided; and the sand blasting coverage and flexibility are improved.

Description

Technical Field

[0001] The invention relates to the technical field of sandblasting mechanisms, in particular to a sandblasting mechanism for a shell of an engine exhaust gas recirculation cooler. Background Art

[0002] Some heavy trucks use natural gas as the main engine fuel. In order to reduce emissions and improve energy efficiency, a recirculation cooler is installed at the engine exhaust end. The recirculation cooler shell is formed by metallic casting.

[0003] After the cooler shell of the recycling cooler is manufactured and formed, there are many burrs on the inner surface. In order to remove the burrs, a sandblasting machine is needed to sandblast the inside of the cooler shell. However, after the treatment, a large amount of sand remains adsorbed on the inner surface, and this part of the sand cannot be simply poured out. It needs to be cleaned manually with a brush, which is not fast enough. Secondly, the cooler shell is affected by its own length and shape. The existing sandblasting gun is not easy to extend into the cooler shell, resulting in some places that the gun nozzle cannot reach, resulting in dead angles during the sandblasting process, resulting in poor sandblasting effect on the inner surface. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the present invention provides a sandblasting mechanism for an engine exhaust gas recirculation cooler housing, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a sandblasting mechanism for an engine exhaust gas recirculation cooler shell, which performs sandblasting on the inner surface of the cooler shell, including a processing chamber, a left chamber is provided on the left side of the processing chamber, a right chamber is provided on the right side of the processing chamber, a hinged seat is provided in the processing chamber, a positioning seat is connected to the right end of the hinged seat, a cross bar is connected to the right side of the positioning seat, and the cross bar is horizontally arranged and hollow inside.

[0008] The left end of the cross bar passes through the positioning seat and is pivotally connected to the positioning seat. The cross bar body is slidably matched with a sliding seat. The interior of the sliding seat is hollow. Connecting ports are symmetrically opened on the upper and lower sides of the sliding seat. The connecting ports are connected to nozzles. The left end of the cross bar is connected to a sand suction pipe. The sand suction pipe passes through the hinged seat and extends into the left chamber. The sliding seat is connected to a hose. A docking nozzle is connected to the end of the hose away from the sliding seat. The docking nozzle can be docked and connected with the right end of the cross bar.

[0009] The left chamber stores sand for grinding, the right chamber is provided with an exhaust module, the working end of the exhaust module is connected with a collecting pipe, the collecting pipe extends into the processing chamber and is equipped with a connecting nozzle, which can be connected with the connecting nozzle.

[0010] The positioning seat is connected to the clamping assembly. When the clamping assembly fixes the cooler shell, the cross bar passes through the cooler shell horizontally.

[0011] The utility model also comprises a brush handle, wherein a through passage is provided at the center of the brush handle, brushes are arranged around one end of the brush handle, and the other end of the brush handle is used for docking and installation with the connecting port.

[0012] Preferably, the inner wall of the connecting nozzle end is provided with an internal thread, the outer wall of the docking nozzle end is provided with an external thread, a magnetic ring is embedded in the docking nozzle, a through groove is provided in the connecting nozzle along the length direction, an iron ball is provided in the connecting nozzle, the iron ball slides in the through groove, and the iron ball can block the connecting nozzle when the connecting nozzle is not in use.

[0013] Preferably, extension sections are symmetrically arranged on the upper and lower sides of the iron ball, the extension sections are vertical, the extension sections are slidably matched with the through groove, there is a flange at the connecting nozzle port, an elastic rod is connected between the extension section and the flange, the cross-section of the inner wall of the connecting nozzle is conical, the inner diameter of the left end of the connecting nozzle is larger than that of the right end, and when the iron ball moves to the rightmost end, the right end of the connecting nozzle is blocked by the iron ball.

[0014] Preferably, the clamping assembly consists of a slide, a spring, a base plate, and a screw. The base plate is distributed in a ring around the positioning seat. The slide, spring, base plate and screw correspond to each other one by one. One end of the slide slides with the positioning seat. The spring is placed between the slide and the base plate. A screw sleeve is connected to the left side of the positioning seat. The screw thread passes through the base plate and is threadedly connected to the screw sleeve.

[0015] Preferably, it also includes a gear ring and a gear. The gear ring is located on the right side of the positioning seat and is connected to the cross bar. The gears are distributed around the gear ring. A motor is connected to the left side of the positioning seat. The motor drive shaft passes through the positioning seat and is connected to the gear. A slide rail is provided on the right side of the positioning seat, and one end of the slide slides in sliding cooperation with the slide rail.

[0016] Preferably, the slide is connected to a driving wheel, which is slidably matched with the slide groove, and two support rods are symmetrically connected to the top of the slide, and the ends of the support rods are connected to vibration blocks driven by a motor, and the hose is located between the two vibration blocks.

[0017] Preferably, the vibration block is elliptical and can touch the hose when the vibration block rotates.

[0018] Preferably, an electric push rod is connected between the articulated seat and the positioning seat, and the articulated seat is hinged between the left chamber and the processing chamber.

[0019] Preferably, a transparent shell cover is connected to the back of the processing chamber.

[0020] (III) Beneficial effects

[0021] The present invention provides a sandblasting mechanism for an engine exhaust gas recirculation cooler housing. It has the following beneficial effects:

[0022] 1. The sandblasting mechanism of the engine exhaust gas recirculation cooler shell has a positioning seat in the processing chamber, a cross bar is connected to the center of the positioning seat, and a sliding seat is slidably matched on the cross bar. Since the cross bar is fully extended into the shell, the nozzle can be directed to various areas of the inner wall of the shell during the sandblasting process, avoiding dead corners in sandblasting and improving the sandblasting coverage and flexibility.

[0023] 2. The sandblasting mechanism of the engine exhaust gas recirculation cooler shell plays the purpose of switching modes through the cooperation of the connecting seat and the docking nozzle, and converts the sandblasting mode into the cleaning mode. The crossbar drives the slide seat to rotate, and the slide seat drives the brush handle to move back and forth along the crossbar. The brush on the brush handle is used to clean the inner wall of the cooler shell, and the swept sand is absorbed by the air extraction method to prevent the swept sand from attaching to the inner wall of the cooler shell for the second time, making cleaning more convenient and quick.

[0024] 3. The engine exhaust gas recirculation cooler shell sandblasting mechanism has an articulated seat in the processing chamber, the articulated seat is connected to a positioning seat, the positioning seat is connected to a clamping assembly, the clamping assembly is used to fix the cooler shell, and the articulated seat drives the positioning seat to tilt up and down during the sandblasting process, so as to pour out the sand and avoid excessive sand remaining in the cooler shell, which is convenient for the subsequent cleaning of the inner wall of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional diagram of the structure of the present invention;

[0026] Figure 2 It is a cross-sectional view of the structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the positioning seat structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the positioning seat structure of the present invention from another angle;

[0029] Figure 5 For the present invention Figure 3 A magnified view of the structure at center;

[0030] Figure 6 It is a schematic diagram of the slide structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the connector structure of the present invention;

[0032] Figure 8 This is a cross-sectional view of the connector structure of the present invention.

[0033] In the figure: 1 processing chamber, 11 transparent shell cover, 12 left chamber, 13 right chamber, 131 collecting pipe, 2 hinge seat, 21 electric push rod, 3 positioning seat, 31 slide rail, 32 slide plate, 33 spring, 34 film, 35 screw, 36 gear ring, 37 gear, 38 motor, 39 screw sleeve, 310 sand suction pipe, 4 cross bar, 41 slide groove, 5 slide seat, 51 nozzle, 52 hose, 53 brush handle, 54 support rod, 55 vibration block, 6 docking nozzle, 61 magnetic ring, 7 connecting nozzle, 71 through groove, 72 flange, 8 iron ball, 81 extension section, 82 elastic rod. DETAILED DESCRIPTION

[0034] The embodiment of the present invention provides a sandblasting mechanism for the housing of an engine exhaust gas recirculation cooler, such as Figure 1-8 As shown, the inner surface of the cooler shell is sandblasted, including a processing chamber 1, a left chamber 12 is welded on the left side of the processing chamber 1, and a right chamber 13 is welded on the right side of the processing chamber 1. A motor-driven hinge seat 2 is pivotally connected in the processing chamber 1, and the hinge seat 2 is driven by the motor to deflect up and down. A positioning seat 3 is fixedly installed at the right end of the hinge seat 2, and a crossbar 4 is connected to the right side of the positioning seat 3. The crossbar 4 is arranged horizontally and is hollow inside.

[0035] The left end of the crossbar 4 passes through the positioning seat 3 and is pivotally connected to the positioning seat 3. The crossbar 4 is slidably matched with a slide seat 5. The slide seat 5 is hollow inside. The slide seat 5 has connection ports symmetrically opened on the upper and lower sides. The connection ports are fixedly installed with nozzles 51. The left end of the crossbar 4 is connected to a sand suction pipe 310, which passes through the hinge seat 2 and extends into the left chamber 12. The slide seat 5 is connected to a hose 52. The end of the hose 52 away from the slide seat 5 is fixedly installed with a docking nozzle 6, which can be connected to the right end of the crossbar 4.

[0036] A delivery pump is fixedly installed between the sand suction pipe 310 and the cross bar 4, and the delivery pump is used to deliver sand into the cross bar 4. Since this is a conventional technical means, it will not be described in detail.

[0037] The left chamber 12 contains sand for grinding, and the right chamber 13 contains an exhaust module. A collecting pipe 131 is fixedly installed at the working end of the exhaust module. The collecting pipe 131 extends into the processing chamber 1 and is fixedly installed with a connecting nozzle 7. The docking nozzle 6 can be connected to the connecting nozzle 7. The above-mentioned exhaust module is a conventional technical means.

[0038] The positioning seat 3 is connected to the clamping assembly. When the clamping assembly fixes the cooler shell, the cross bar 4 passes through the cooler shell horizontally.

[0039] Working principle: the clamping assembly fixes the cooler housing, the crossbar 4 is extended into the cooler housing, the butt nozzle 6 is connected to the right end of the crossbar 4, and then the delivery pump starts to work, sending sand into the crossbar 4, into the slide 5 through the hose 52, and finally sprayed out from the nozzle 51. The slide 5 moves back and forth along the crossbar 4, and the crossbar 4 rotates repeatedly, and the sprayed sand is polished with the inner wall of the cooler housing.

[0040] The brush handle 53 is also included. A through passage is opened at the center of the brush handle 53. Brushes are installed around one end of the brush handle 53. The other end of the brush handle 53 is used for docking and installation with the connecting port.

[0041] After polishing, first remove the cooler shell, remove the nozzle 51, and install the brush handle 53 on the slide 5. The clamping assembly fixes the cooler shell again, and the brush is now in contact with the inner wall of the cooler shell. Connect the docking nozzle 6 and the connecting nozzle 7. The exhaust module starts to work, the slide 5 moves back and forth along the cross bar 4, and the cross bar 4 rotates repeatedly. The brush sweeps away the sand adsorbed on the inner wall of the cooler shell, and the exhaust module absorbs the swept sand. Avoid the sand from adhering to the inner wall of the cooler shell for the second time.

[0042] An inner wall at the end of the connecting nozzle 7 is provided with an internal thread, and an outer wall at the end of the docking nozzle 6 is provided with an external thread, so that the connecting nozzle 7 and the docking nozzle 6 are installed together by means of threaded connection.

[0043] A magnetic ring 61 is embedded in the docking nozzle 6, a through groove 71 is opened along the length direction of the connecting nozzle 7, an iron ball 8 is arranged in the connecting nozzle 7, the iron ball 8 slides in the through groove 71, and the iron ball 8 can block the connecting nozzle 7 when the connecting nozzle 7 is not in use.

[0044] Extension sections 81 are symmetrically arranged on the upper and lower sides of the iron ball 8 , and the iron ball 8 and the extension sections 81 are integrally formed.

[0045] The extension section 81 is vertical, and the extension section 81 is slidably matched with the through groove 71. There is a flange 72 at the end of the connecting nozzle 7. An elastic rod 82 is fixedly installed between the extension section 81 and the flange 72. The cross-section of the inner wall of the connecting nozzle 7 is conical, and the inner diameter of the left end of the connecting nozzle 7 is larger than that of the right end. When the iron ball 8 moves to the rightmost end, the right end of the connecting nozzle 7 is blocked by the iron ball 8.

[0046] Combined with Figure 8 It can be seen that when the connection nozzle 7 is not in use, the elastic force of the elastic rod 82 pushes the iron ball 8 to the rightmost side to block the connection nozzle 7. When the connection nozzle 7 and the docking nozzle 6 are installed together, the magnetic ring 61 magnetically attracts the iron ball 8 to move to the left side, thereby making the connection nozzle 7 and the collection pipe 131 unobstructed.

[0047] The clamping assembly consists of a slide 32, a spring 33, a bottom plate 34, and a screw 35. The bottom plate 34 is distributed in a ring around the positioning seat 3. The slide 32, the spring 33, the bottom plate 34 and the screw 35 correspond to each other one by one. One end of the slide 32 slides with the positioning seat 3. The spring 33 is fixedly installed between the slide 32 and the bottom plate 34. A screw sleeve 39 is welded on the left side of the positioning seat 3. The screw 35 threads through the bottom plate 34 and is threadedly connected to the screw sleeve 39.

[0048] Due to the elasticity of the spring 33 , the sliding sheet 32 ​​is always in contact with the outer surface of the cooler housing, thereby playing a clamping role.

[0049] It also includes a gear ring 36 and a gear 37. The gear ring 36 is located on the right side of the positioning seat 3. The gear ring 36 is welded to the rod body of the cross bar 4. The gears 37 are distributed around the gear ring 36 and mesh with the gear ring 36. A motor 38 is fixedly installed on the left side of the positioning seat 3. The transmission shaft of the motor 38 passes through the positioning seat 3 and is welded to the gear 37. A slide rail 31 is provided on the right side of the positioning seat 3. One end of the slide 32 is slidably matched with the slide rail 31. The motor 38 drives the gear 37 to rotate, and the gear 37 drives the gear ring 36 to rotate, so that the cross bar 4 can rotate repeatedly.

[0050] The slide 5 is fixedly mounted with a driving wheel, which is slidably matched with the slide slot 41, and the slide 5 can be moved along the cross bar 4 through the driving wheel. Two support rods 54 are symmetrically welded on the top of the slide 5, and a motor-driven vibration block 55 is fixedly mounted on the end of the support rod 54, and the hose 52 is located between the two vibration blocks 55.

[0051] The vibration block 55 is elliptical, and when the vibration block 55 rotates, it can touch the hose 52. The distance between the two vibration blocks 55 is as small as possible, and the end of the vibration block 55 collides with the hose 52, causing the hose 52 to vibrate slightly, thereby preventing sand from adhering to the inner wall of the hose 52 for a long time, causing the inner diameter of the hose 52 to gradually decrease, and preventing the hose 52 from being blocked.

[0052] An electric push rod 21 is fixedly installed between the articulated seat 2 and the positioning seat 3 , and the articulated seat 2 is hinged between the left chamber 12 and the processing chamber 1 .

[0053] A transparent shell cover 11 is hinged on the back of the processing chamber 1 .

[0054] In summary, the engine exhaust gas recirculation cooler shell sandblasting mechanism has a positioning seat 3 set up in the processing chamber 1, a cross bar 4 is connected to the center of the positioning seat 3, and a slide seat 5 is slidably matched on the cross bar 4. Since the cross bar 4 is completely extended into the shell, the nozzle 51 can be directed to various areas of the inner wall of the shell during the sandblasting process, avoiding dead corners in sandblasting and improving the sandblasting coverage and flexibility.

[0055] In addition, the connection seat 7 and the docking nozzle 6 cooperate to switch the mode, and the sandblasting mode is converted into the cleaning mode. The crossbar 4 drives the slide 5 to rotate, and the slide 5 drives the brush handle 54 to move back and forth along the crossbar 4. The brush on the brush handle 54 is used to clean the inner wall of the cooler shell, and the swept sand is absorbed by the air extraction method to prevent the swept sand from being attached to the inner wall of the cooler shell for a second time, making cleaning more convenient and quick.

[0056] In addition, a hinge seat 2 is provided in the processing chamber 1, the hinge seat 2 is connected to a positioning seat 3, the positioning seat 3 is connected to a clamping assembly, and the clamping assembly is used to fix the cooler shell. During the sandblasting process, the hinge seat 2 drives the positioning seat 3 to tilt up and down, so as to pour out the sand particles and avoid excessive sand particles remaining in the cooler shell, so as to facilitate the subsequent cleaning of the inner wall of the shell.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sandblasting mechanism for an engine exhaust gas recirculation cooler housing, which performs sandblasting on the inner surface of the cooler housing, characterized in that: The processing chamber (1) comprises a left chamber (12) on the left side of the processing chamber (1), a right chamber (13) on the right side of the processing chamber (1), a hinge seat (2) provided inside the processing chamber (1), a positioning seat (3) connected to the right end of the hinge seat (2), a cross bar (4) connected to the right side of the positioning seat (3), and the cross bar (4) is arranged horizontally and is hollow inside; The left end of the cross bar (4) passes through the positioning seat (3) and is pivotally connected to the positioning seat (3). The cross bar (4) is slidably matched with a sliding seat (5). The sliding seat (5) is hollow inside. The sliding seat (5) is symmetrically provided with connecting ports on the upper and lower sides. The connecting ports are connected to nozzles (51). The left end of the cross bar (4) is connected to a sand suction pipe (310). The sand suction pipe (310) passes through the hinge seat (2) and extends into the left chamber (12). The sliding seat (5) is connected to a hose (52). The end of the hose (52) away from the sliding seat (5) is connected to a docking nozzle (6). The docking nozzle (6) can be docked and connected with the right end of the cross bar (4). The left chamber (12) contains sand grains for grinding, and the right chamber (13) is provided with an exhaust module, the working end of the exhaust module is connected to a collecting pipe (131), the collecting pipe (131) extends into the processing chamber (1) and is provided with a connecting nozzle (7), and the docking nozzle (6) can be docked and communicated with the connecting nozzle (7); The positioning seat (3) is connected to the clamping assembly, and when the clamping assembly fixes the cooler shell, the cross bar (4) passes through the cooler shell laterally; The brush handle (53) is also provided with a through passage at the center thereof, a brush is installed around one end of the brush handle (53), and the other end of the brush handle (53) is used for docking with the connection port.

2. The engine exhaust gas recirculation cooler housing sandblasting mechanism according to claim 1, characterized in that: The inner wall of the end of the connecting nozzle (7) is provided with an internal thread, the outer wall of the end of the docking nozzle (6) is provided with an external thread, a magnetic ring (61) is embedded in the docking nozzle (6), a through groove (71) is provided in the connecting nozzle (7) along the length direction, an iron ball (8) is provided in the connecting nozzle (7), the iron ball (8) and the through groove (71) are slidably matched, and the iron ball (8) can block the connecting nozzle (7) when the connecting nozzle (7) is not in use.

3. The sandblasting mechanism for the engine exhaust gas recirculation cooler housing according to claim 2, characterized in that: The iron ball (8) is symmetrically arranged with extension sections (81) on the upper and lower sides, the extension sections (81) are vertical, the extension sections (81) are slidably matched with the through groove (71), a flange (72) is provided at the end of the connecting nozzle (7), an elastic rod (82) is connected between the extension section (81) and the flange (72), the inner wall cross section of the connecting nozzle (7) is conical, the inner diameter of the left end of the connecting nozzle (7) is larger than the inner diameter of the right end, and when the iron ball (8) moves to the rightmost end, the right end of the connecting nozzle (7) is blocked by the iron ball (8).

4. The sandblasting mechanism for the housing of an engine exhaust gas recirculation cooler according to claim 3, characterized in that: The clamping assembly is composed of a slide (32), a spring (33), a bottom plate (34), and a screw (35). The bottom plate (34) is annularly distributed around the positioning seat (3). The slide (32), the spring (33), the bottom plate (34) and the screw (35) correspond to each other one by one. One end of the slide (32) is slidably matched with the positioning seat (3). The spring (33) is arranged between the slide (32) and the bottom plate (34). A screw sleeve (39) is connected to the left side of the positioning seat (3). The screw (35) is threadedly penetrated through the bottom plate (34) and is threadedly connected to the screw sleeve (39).

5. The engine exhaust gas recirculation cooler housing sandblasting mechanism according to claim 4, characterized in that: The invention also comprises a gear ring (36) and a gear (37). The gear ring (36) is located on the right side of the positioning seat (3). The gear ring (36) is connected to the rod body of the cross bar (4). The gears (37) are distributed around the gear ring (36). A motor (38) is connected to the left side of the positioning seat (3). The transmission shaft of the motor (38) passes through the positioning seat (3) and is connected to the gear (37). A slide rail (31) is provided on the right side of the positioning seat (3). One end of the slide plate (32) is slidably matched with the slide rail (31).

6. The sandblasting mechanism for the engine exhaust gas recirculation cooler housing according to claim 5, characterized in that: The slide seat (5) is connected to a driving wheel, which is slidably matched with the slide groove (41); two support rods (54) are symmetrically connected to the top of the slide seat (5); the ends of the support rods (54) are connected to a vibration block (55) driven by a motor; and the hose (52) is located between the two vibration blocks (55).

7. The engine exhaust gas recirculation cooler housing sandblasting mechanism according to claim 6, characterized in that: The vibration block (55) is elliptical in shape, and can contact the hose (52) when the vibration block (55) rotates.

8. The sandblasting mechanism for the engine exhaust gas recirculation cooler housing according to claim 7, characterized in that: An electric push rod (21) is connected between the articulated seat (2) and the positioning seat (3), and the articulated seat (2) is hinged between the left chamber (12) and the processing chamber (1).

9. The engine exhaust gas recirculation cooler housing sandblasting mechanism according to claim 8, characterized in that: The back side of the processing chamber (1) is connected to a transparent shell cover (11).

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