Patent Application
20240217079
The present invention relates to a pneumatic extraction device, and more particularly to a pneumatic extraction device that can be held easily, can reduce operating time, and can improve safety.
A conventional diesel engine comprises multiple fuel injectors to provide oil and gas, so that the conventional diesel engine can provide power output after combustion operation. However, the fuel injectors are prone to accumulation or blockage due to impurities or oil collision after a long time use, and this will affect the atomization effect of oil and gas. At this time, the fuel injectors are needed to be taken out from the conventional diesel engine for cleaning or replacement. Since the fuel injectors are tightly fitted on a cylinder of the conventional diesel engine, and the fuel injectors cannot be easily removed manually. With reference to
When the conventional pneumatic extraction device 50 is in use, the vibrator 51 is securely connected to one of the fuel injectors, and the switch 53 is open to enable the compressed air to flow into the vibrator 51 via the air delivery pipe 52. Then the corresponding fuel injector can be gradually removed from the cylinder after the vibration of the vibrator 51. Although the corresponding fuel injector can be removed from the cylinder by the conventional pneumatic extraction device 50, the user will not hold the vibrator 51 during the vibrating process of the conventional pneumatic extraction device 50 to avoid being affected by the vibration of the vibrator 50 since the corresponding fuel injector is only connected to the bottom of the vibrator 51. Therefore, the user needs to observe the movement of the corresponding fuel injector relative to the cylinder during use to avoid safety concerns caused by the corresponding fuel injector flying outward together with the vibrator 51 when the corresponding fuel injector is separated from the cylinder. Generally, when the corresponding fuel injector is about to separate away from the cylinder, the switch 53 is closed to stop the vibrator 51 from vibrating, and then the vibrator 51 is separated from the corresponding fuel injector. After the vibrator 51 is separated from the corresponding fuel injector, the corresponding fuel injector is manually pulled out from the cylinder, so as to avoid the random flying of the corresponding fuel injector along with the vibrator 51.
Although the conventional pneumatic extraction device 50 can be used to pull the fuel injectors from the cylinder, the user needs to remove the fuel injector from the cylinder by two-stage operation, and this is relatively inconvenient and time-consuming. Furthermore, the user needs to pay attention to the movement of the fuel injector during the operation, and industrial safety hazard will still occur when the user does not pay attention. Therefore, the conventional pneumatic extraction device 50 really has to be improved.
To overcome the shortcomings, the present invention tends to provide a pneumatic extraction device, to mitigate or obviate the aforementioned problems.
The main objective of the present invention is to provide a pneumatic extraction device that can be held easily, can reduce operating time, and can improve safety.
The pneumatic extraction device in accordance with the present invention has a holding group, an air intake group, and a vibration group. The holding group has a handle and an outer shell. The handle has at least one connecting arm formed on and protruded from an external surface of the handle. The outer shell is connected to the at least one connecting arm opposite to the handle such that the outer shell and the handle are spaced apart from each other. The air intake group is connected to the holding group and has a connecting sleeve connected to the handle. The vibration group is connected to the holding group and the air intake group and has a main shaft and a vibrating cylinder. The main shaft is connected to the connecting sleeve and has a fixing head. The vibrating cylinder is slidably mounted on the main shaft, is mounted in the outer shell, and has an outer external surface non-contacted with an internal surface of the outer shell.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
With reference to
The holding group 10 has a handle 11 and an outer shell 12. The handle 11 has an air inlet 111, a mounting recess 112, an air outlet 113, and at least one connecting arm 114. The air inlet 111 is longitudinally formed in the handle 11 from a top of the handle 11. The mounting recess 112 is transversally formed in a middle portion of the handle 11 and communicates with the air inlet 111. The air outlet 113 is formed in a bottom of the handle 11 and communicates with the mounting recess 112. The at least one connecting arm 114 is transversally formed on and protrudes from an external surface of the handle 11 adjacent to the bottom of the handle 11. The outer shell 12 is connected to an end of the at least one connecting arm 114 opposite to the handle 11 such that the outer shell 12 and the handle 11 are spaced apart from each other. Preferably, the handle 11, the at least one connecting arm 114, and the outer shell 12 are formed as a single piece. The outer shell 12 is a hollow casing and has a mounting chamber 121, an upper opening 122, and a lower opening 123. The mounting chamber 121 is formed in the outer shell 12. The upper opening 122 and the lower opening 123 are respectively formed on a top and a bottom of the outer shell 12 and both communicate with the mounting chamber 121.
The air intake group 20 is connected to the holding group 10 and has a valve base 21, a trigger 22, a connecting head 23, and a connecting sleeve 24. The valve base 21 is mounted in the mounting recess 112 of the handle 11 to enable the air inlet 11 to selectively communicate with the air outlet 113. The trigger 22 is pressingly connected to the valve base 21 on the external surface of the handle 11. The air inlet 111 communicates with the air outlet 113 via the mounting recess 112 when the trigger 22 is pressed by a user. Preferably, the trigger 22 is disposed on the external surface of the handle 11 that faces to the outer shell 12 and is disposed above the at least one connecting arm 114. In addition, the valve base 21 and the trigger 22 are conventional and the features and the structures of the valve base 21 and the trigger 22 are not to be described in detail. The connecting head 23 is connected to the bottom of the handle 11 and communicates with the air outlet 113. The connecting sleeve 24 is connected to the connecting head 23 and has a vent pipe 241 and two mounting rings 242, 243. The two mounting rings 242, 243 are respectively disposed on two ends of the vent pipe 241, and one of the two mounting rings 242, 243 is mounted around the connecting head 23 and communicates with the connecting head 23. Preferably, the two mounting rings 242, 243 are respectively a first mounting ring 242 and a second mounting ring 243. The first mounting ring 242 is mounted around the connecting head 23.
With reference to
The vibrating cylinder 32 is slidably mounted on the main shaft 31, is mounted in the mounting chamber 12 of the outer shell 12 and has an outer external surface non-contacted with an internal surface of the outer shell 12 such that the vibrating cylinder 32 is spaced apart from the outer shell 12. When the vibrating cylinder 32 is moved relative to the main shaft 31, the vibrating cylinder 32 will not rub against the outer shell 12. The vibrating cylinder 32 has an outer jacket 34 and a ventilating seat 35. The outer jacket 34 is slidably mounted around the main shaft 31 and has a bottom mount 341, a top cover 342, and an air chamber 343. The bottom mount 341 is disposed on a bottom of the outer jacket 34, is slidably mounted around the main shaft 31, and is disposed above the second mounting ring 243. The top cover 342 is disposed on a top of the outer jacket 34. The air chamber 343 is formed in the outer jacket 34 between the bottom mount 341 and the top cover 342. The ventilating seat 35 is mounted securely on the top end of the main shaft 31 and is disposed in the air chamber 343 between the bottom mount 341 and the top cover 342. The ventilating seat 35 allows the compressed air in the air passage 311 of the main shaft 31 to flow between the ventilating seat 35 and the top cover 342 and between the ventilating seat 35 and the bottom mount 341, so that the outer jacket 34 can move relative to the main shaft 31 and the ventilating seat 35 in the mounting chamber 121 of the outer shell 12, thereby providing a vibrating force for the main shaft 31.
Furthermore, with reference to
With reference to
By means of the washer 354 of each toggle lever 353 shielding the corresponding lower through hole 351 or the corresponding upper through hole 352, the outer jacket 34 is repeatedly slid up and down relative to the main shaft 31, and the outer jacket 34 moved relatively to the main shaft 31 can provide a vibration force to the main shaft 31 in the process of sliding up and down, and the vibration force is transmitted to the fuel injector through the fixing head 33, so that the fuel injector can be gradually moved relative to the cylinder of the diesel engine until the fuel injector is separated from the cylinder, and the user can release the trigger 22 to complete the removal of the fuel injector.
According to the above mentioned features and structural relationships of the pneumatic extraction device of the present invention, the user only needs to connect the main shaft 31 with the fuel injector, holds the handle 11 and presses the trigger 22, and the vibration force of the vibration group 30 can be used to separate the fuel injector from the cylinder, and this is convenient in use and easy to operate. In addition, the moving direction of the vibration group 30 can be maintained by holding the handle 11 during use, and this can avoid the situation of the fuel injector separated from the cylinder and flying outwardly, effectively improving the safety of use. Furthermore, when the fuel injector is separated from the cylinder, the injector can be stabilized through the handle 11, the at least one connecting arm 114, and the outer shell 12. Therefore, the pneumatic extraction device of the present invention can directly pull out the fuel injector without manual operation, which effectively reduces the time required for pulling out the fuel injector.
Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
