CN216422440U

CN216422440U - Fuel oil system drainage valve extracting tool

Info

Publication number: CN216422440U
Application number: CN202123109873.0U
Authority: CN
Inventors: 张斌
Original assignee: Hna Gulfstream Beijing Technical Service Co ltd
Current assignee: Hna Gulfstream Beijing Technical Service Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-05-03
Anticipated expiration: 2031-12-10

Abstract

The utility model provides a fuel oil system drainage valve extracting tool relating to aircraft repair tools field, it includes a dismantlement head, the one end of dismantling the head is provided with and is used for inserting the locating part of establishing in the emergent recess of dismantling of drainage valve, the locating part deviates from the other end of dismantling the head is connected with and is used for will revolving the extracting tool who dismantles the head and keep away from the extension piece of drainage valve. This application not only the operation is more convenient, has also improved ann and has torn efficiency open greatly, has avoided the staff to dismantle the heavy work of drainage valve door from the oil tank is inside.

Description

Fuel oil system drainage valve extracting tool

Technical Field

The application relates to the field of aircraft maintenance tools, in particular to a fuel system drainage valve dismounting tool.

Background

In the flying process of an airplane, the fuel oil can often separate out water in the fuel oil along with the reduction of the temperature of the external environment, and the separated water can be in a free state due to the relatively large viscosity of the aviation fuel oil; in addition, moisture in the atmosphere condenses as water droplets on the tank wall and mixes with the oil, and therefore, a drain valve for draining the moisture in the oil becomes an important part of the aircraft.

A drainage valve before improvement, as shown in fig. 1, includes a valve body 1, the outer peripheral face of the valve body 1 is provided with an external thread for threaded connection at an oil tank mounting port, the end portion of the valve body 1 located in an oil tank is provided with an operation portion 11 for wrench screwing, the end face of the valve body 1 located outside the oil tank is provided with a limiting disc 12, a valve nozzle 13 is arranged on the end face of the limiting disc 12, and a plurality of emergency disassembly grooves 14 are uniformly distributed around the valve nozzle 13.

After the oil tank is assembled in the airplane, the surplus left around the drainage valve cannot provide a corresponding disassembling tool for screwing, so that when a worker overhauls or replaces the drainage valve, the fuel oil of the airplane needs to be emptied, the disassembled fuel oil is close to the cover plate, and the disassembled fuel oil enters the oil tank to disassemble the drainage valve.

Aiming at the related technologies, the inventor thinks that the defects of high working difficulty and long working time are existed when the drainage valve is disassembled.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a fuel oil system drainage valve extracting tool, its advantage has reduced the dismantlement degree of difficulty of drainage valve.

The application provides a fuel system drainage valve extracting tool adopts following technical scheme:

the utility model provides a fuel system drainage valve extracting tool, includes a dismantlement head, the one end of dismantling the head is provided with and is used for inserting the locating part of establishing in the emergent recess of dismantling of drainage valve, the locating part deviates from the other end of dismantling the head is connected with and is used for will revolving the extracting tool who twists the dismantlement head and keep away from the extension piece of drainage valve.

Through adopting above-mentioned technical scheme, when the staff is dismantling the drainage valve, can insert into the emergent recess of dismantling of water inlet and outlet valve with dismantling overhead locating part, the drainage valve is kept away from to the extension portion this moment, provides abundant operating space for the staff, and the staff of being convenient for revolves the extension piece soon to dismantle the drainage valve from the oil tank in, not only the operation is more convenient, has also improved ann and has torn efficiency open greatly, has avoided the staff to follow the inside heavy work of dismantling the drainage valve of oil tank.

Preferably, the removal head is removably connected to the extension member.

By adopting the technical scheme, if the extension piece is damaged, the extension piece can be conveniently and independently replaced, and the extension pieces with different lengths can be adopted by workers according to the specific use environment of the disassembly head, so that the practicability is improved; and the disassembly head and the extension piece are arranged in a split manner, so that the disassembly operation is convenient for split transportation.

Preferably, the end face, deviating from the limiting part, of the dismounting head is provided with a jack, the end of the extension piece is inserted into the jack and can drive the dismounting head to rotate, and one end of the extension piece is provided with an inserting column matched with the jack.

Through adopting above-mentioned technical scheme, inserting the mutual grafting cooperation of post and jack, also alleviateed the weight of dismantling the head on the one hand, portable, on the other hand has also improved the efficiency is torn open in the ann of dismantling the head and inserting the post.

Preferably, the end part of the extension piece, which is far away from the plug column, is provided with a clamping part which is convenient for a tool to clamp.

Through adopting above-mentioned technical scheme, press from both sides the setting of establishing the portion and be convenient for centre gripping such as spanner and carry out pressing from both sides and establish and drive the extension piece and rotate to the extension piece, improved the convenience of the use of extension.

Preferably, the end of the clamping part is provided with a matching hole for assembling with a disassembling tool.

Through adopting above-mentioned technical scheme, the staff of being convenient for carries out ann each other through ratchet spanner and extension and tears open through the setting of mating holes to it rotates to drive the extension, thereby has improved the multifunctionality that the extension used.

Preferably, the cross-sectional dimension of the insertion hole is the same as the cross-sectional dimension of the fitting hole.

Through adopting above-mentioned technical scheme, whether the staff can decide to use the extension piece according to service environment, can directly operate ratchet wrench on dismantling overhead, also can install ratchet wrench and extension piece each other to extracting tool's practicality has been improved.

Preferably, the disassembling head is provided with lightening holes communicated with the jacks.

Through adopting above-mentioned technical scheme, the lightening hole has reduced the holistic weight of dismantlement head on the one hand, and on the other hand has also reduced and has dismantled the accumulation of in-process sweeps on extracting tool, is convenient for clear up.

Preferably, an end surface of the stopper is provided in a spherical shape.

Through adopting above-mentioned technical scheme, when emergent dismantlement recess when docking each other on locating part and the drainage valve, the sphere of locating part tip has played the guide effect to improve the fault-tolerant space of butt joint, improved butt joint efficiency.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the disassembly efficiency of the drainage valve is improved; the working personnel can disassemble the drainage valve from the outside of the oil tank through a disassembling tool, so that the complex operation that oil is discharged and enters the inside of the oil tank is greatly reduced;

2. the practicability of the disassembling tool is improved; the staff can be according to dismantling the specific service environment of head, change the service length of extension piece to satisfy the user demand of different environment.

Drawings

FIG. 1 is a schematic view showing a structure of a drain trap;

FIG. 2 is a schematic view showing the overall structure of the removal tool according to the present embodiment;

FIG. 3 is a schematic view showing the overall structure of the detaching head;

FIG. 4 is a schematic view showing the connection structure of the detachment head to the extension member;

FIG. 5 is a schematic view showing the overall construction of the extension;

fig. 6 is a schematic structural view showing a lightening hole of the dismounting head.

Description of reference numerals: 1. a valve body; 11. an operation unit; 12. a limiting disc; 13. a valve nozzle; 14. the groove is disassembled in an emergency; 2. disassembling the head; 21. a limiting member; 22. a jack; 23. lightening holes; 3. an extension member; 31. inserting a column; 4. a clamping section; 41. a mating hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

A fuel system drainage valve dismounting tool is applied to a drainage valve as shown in figure 1, the drainage valve comprises a cylindrical valve body 1, and the outer peripheral surface of the valve body 1 is provided with external threads for being in threaded connection with an installation hole of an oil tank; an operating part 11 for wrench screwing is fixedly connected on the end surface of the valve body 1 positioned in the oil tank; the other end face of the valve body 1 is fixedly connected with a limiting disc 12 with the diameter larger than that of the valve body 1, so that the installation depth of the valve body 1 on an oil tank is limited; a valve nozzle 13 communicated with the valve body 1 for draining water is arranged on the end face of the limiting disc 12 departing from the

valve body

1, and 4 emergency disassembly grooves 14 are uniformly formed in the periphery of the limiting disc 12, which is positioned around the valve nozzle 13, in a circumferential mode.

The utility model provides a dismantlement work to aircraft fuel system drainage valve, as shown in figure 2, includes that one dismantles head 2, dismantles head 2 and is cylindricly, and the one end of dismantling head 2 is provided with and is used for dismantling the locating part 21 that recess 14 mutually supported with every emergency of valve body 1, and the other end of dismantling head 2 is provided with the extension piece 3 of the instrument operation of being convenient for.

As shown in fig. 3, the limiting members 21 are in a column shape, and the number of the limiting members 21 corresponds to the number of the emergency disassembly grooves 14 on the valve body 1 one by one, in this embodiment, 4 limiting members 21 are taken as an example, the axial direction of the limiting members 21 is parallel to the axial direction of the disassembly head 2, and one end of the limiting members 21 is fixedly connected to one end surface of the disassembly head 2. When the end of the dismounting head 2 provided with the limiting part 21 is butted with the drainage valve, the position of the limiting part 21 corresponds to the position of the emergency dismounting groove 14 on the drainage valve one by one and is inserted into the corresponding emergency dismounting groove 14. The staff only needs to drive the rotation of dismantling head 2 through the instrument and can realize driving the rotation of valve body 1 to dismantle the drainage valve.

As shown in fig. 3, in order to reduce the difficulty in abutting the limiting member 21 with the emergency detachment groove 14, the end surface of each limiting member 21 away from the detachment head 2 is set to be spherical, so that when the limiting member 21 and the drainage valve are abutted against each other, the arc surface at the end of the limiting member 21 can play a good role in guiding the limiting member 21, thereby improving the insertion efficiency of the limiting member 21 and the drainage valve.

As shown in fig. 4, the extension member 3 and the detaching head 2 are inserted into each other, and an insertion hole 22 with a polygonal cross section is formed in an end surface of the detaching head 2 away from the limiting member 21 along an axial direction of the detaching head 2, in this embodiment, the cross section of the insertion hole 22 is rectangular. The extension piece 3 is a cylinder with a circular section, and one end of the extension piece is fixedly connected with a plug-in post 31 with the same size as the plug-in hole 22, so that when the extension piece 3 is connected with the dismounting head 2, only the plug-in post 31 of the extension piece 3 is inserted into the plug-in hole 22 of the dismounting head 2, on one hand, under the friction force of the plug-in post 31 and the plug-in hole 22, the dismounting head 2 and the extension piece 3 are not easy to be separated; on the other hand, the rotation of extension 3 also can drive the rotation of dismantling head 2 to the realization is to dismantling the transmission of head 2.

As shown in fig. 5, in order to facilitate clamping and retaining the extension piece 3 by a tool, a clamping portion 4 with a polygonal cross section is fixedly connected to the other end surface of the extension piece 3 away from the insert column 31, and in this embodiment, the clamping portion 4 is a cylinder with a rectangular cross section. If the staff adopts spanner instrument to press from both sides when establishing extension piece 3, the spanner can press from both sides simultaneously and establish on the one side of carrying on the back of the body that presss from both sides establishment portion 4 to improved the area of contact who presss from both sides establishment portion 4 and spanner, makeed extension piece 3 atress more stable, be difficult for causing breaking away from of spanner and extension piece 3.

As shown in fig. 5, the end surface of the clamping portion 4 away from the extension member 3 is further provided with a fitting hole 41 for mutual mounting and dismounting, and the section of the fitting hole 41 is rectangular, so as to facilitate mutual assembly with the end of the existing tool, such as a ratchet wrench. The extension piece 3 is driven to rotate by the ratchet wrench, and the water discharging valve is driven to rotate by the dismounting head 2. In addition, in order to improve the adaptability of the disassembling head 2 to different environments, the matching hole 41 on the extension piece 3 is the same as the insertion hole 22 on the disassembling head 2 in size, so that a worker can assemble the ratchet wrench and the extension piece 3 with each other and also can assemble the ratchet wrench and the disassembling head 2 with each other directly, and the disassembling head can be selected according to different using environments. Moreover, because the extension piece 3 is detachably connected with the disassembling head 2, on one hand, a worker can mutually disassemble the disassembling head 2 and the extension piece 3 during transportation, thereby reducing the size of the whole disassembling tool, being convenient for transportation, and having more pertinence in replacement if parts are damaged; on the other hand, the staff can be according to the service environment of difference, the length of adjustment extension piece 3 to save the space of operation, make extracting tool use more nimble.

As shown in fig. 6, the end face of the disassembling head 2 provided with the limiting member 21 is further provided with a lightening hole 23 communicated with the insertion hole 22, so that on one hand, in the use process of the disassembling tool, scraps in some operation processes are not easy to accumulate in a gap on the disassembling head 2, and are convenient to clean; on the other hand is guaranteeing to dismantle under the prerequisite of head 2 intensity, has also significantly reduced the weight of dismantling head 2 for it is more convenient to dismantle head 2 and carry.

The principle is implemented to a fuel system drainage valve extracting tool in this application embodiment: the staff will choose suitable extension piece 3 according to service environment at first to insert the post 31 of inserting of extension piece 3 tip and establish in the jack 22 of dismantling head 2, then will dismantle in the emergent dismantlement recess 14 on the upper limit piece 21 of head 2 inserts the water inlet and drainage valve, then staff's accessible spanner or ratchet spanner fix the other end at extension piece 3, thereby realize the rotation to extension piece 3, and drive and dismantle head 2 and rotate.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a fuel system drainage valve extracting tool which characterized in that: the emergency water drainage valve dismounting device is characterized by comprising a dismounting head (2), wherein a limiting part (21) used for being inserted into a water drainage valve emergency dismounting groove (14) is arranged at one end of the dismounting head (2), the limiting part (21) deviates from the other end of the dismounting head (2) and is connected with an extension part (3) used for enabling a dismounting tool for screwing the dismounting head (2) to be far away from the water drainage valve.

2. The fuel system drain valve removal tool of claim 1, wherein: the disassembling head (2) is detachably connected with the extension piece (3).

3. The fuel system drain valve removal tool of claim 2, wherein: dismantle and offer on the head (2) the terminal surface that deviates from locating part (21) and be used for extension piece (3) tip to insert and establish and can drive and dismantle jack (22) rotatory of head (2), the one end of extension piece (3) is provided with and is used for inserting post (31) with jack (22) mutually supporting.

4. A fuel system drain valve removal tool as claimed in claim 3, wherein: the end part of the extension piece (3) departing from the inserting column (31) is provided with a clamping part (4) convenient for clamping the tool.

5. The fuel system drain valve remover of claim 4, wherein: the end part of the clamping part (4) is provided with a matching hole (41) used for being assembled with a disassembling tool.

6. A fuel system drain valve removal tool as claimed in claim 3, wherein: the cross-sectional dimension of the insertion hole (22) is the same as the cross-sectional dimension of the fitting hole (41).

7. A fuel system drain valve removal tool as claimed in claim 3, wherein: the disassembling head (2) is provided with lightening holes (23) which are mutually communicated with the insertion holes (22).

8. The fuel system drain valve removal tool of claim 1, wherein: the end surface of the limiting piece (21) is spherical.