CN210509405U - Gas and oil cut-off device for diesel engine - Google Patents

Abstract

The utility model discloses a diesel engine cuts off gas, fuel cut-off device, including first casing, the top of first casing is provided with along the fore-and-aft direction with the communicating second casing of first casing inner chamber, the inner chamber of first casing be provided with along the fore-and-aft direction with the communicating circular pipe in first casing front and back both sides, the inner chamber of first casing and the outer wall left side that is located the circular pipe rotate through the bearing and be connected with first gear, the output screw connection of first motor has the second gear with first gear engaged with, the right side of first gear and the outside that is located the circular pipe are provided with spiral fluted disc along circumference, the inner chamber of first casing and the outer wall right side that is located the circular pipe are provided with the closing mechanism. This diesel engine gas cut-off, fuel cut-off device can cut off diesel engine oil circuit or gas circuit fast, forces the diesel engine safety to park to easy operation reduces staff's operation item under emergency, and then avoids taking place danger, and the practicality is strong.

Description

Gas and oil cut-off device for diesel engine

Technical Field

The utility model relates to a diesel engine technical field specifically is a diesel engine gas cut-off, fuel cut-off device.

Background

The diesel engine is an engine which burns diesel to obtain energy and release the energy, and has the advantages of large power and good economic performance, the working process of the diesel engine has many places same as that of a gasoline engine, and each working cycle also goes through four strokes of air inlet, compression, work application and air exhaust. However, because the fuel used in diesel engine is diesel oil, its viscosity is greater than that of gasoline, it is not easy to evaporate, and its self-ignition temperature is lower than that of gasoline, so that the formation and ignition mode of combustible mixed gas are different from that of gasoline engine, and its difference lies in that the mixed gas in the cylinder of diesel engine is compression-ignited rather than ignited, and when the diesel engine is working, it is air which is fed into the cylinder, and when the air in the cylinder is compressed to end point, its temperature can be up to 500 plus 700 deg.C, and its pressure can be up to 40-50 atmospheric pressures. When the piston is close to the top dead center, the high-pressure pump on the engine sprays diesel oil into the cylinder at high pressure, the diesel oil forms fine oil particles which are mixed with high-pressure high-temperature air, the diesel oil mixed gas is combusted by itself and expands violently to generate explosive force to push the piston to do work downwards, the temperature at this moment can reach 1900-, or decompress the diesel engine, block up the admission line, and then force the diesel engine to shut down, this kind of shut down mode is comparatively complicated, and the operation is comparatively troublesome, and under emergency, the staff has no time to carry out multinomial operation, and then takes place danger easily, need design a diesel engine gas cut-off, fuel cut-off device to above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a diesel engine cuts off gas, fuel cut-off device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a diesel engine cuts off gas, fuel cut-off device, includes first casing, the top of first casing is provided with along the fore-and-aft direction with the communicating second casing of first casing inner chamber, the inner chamber of first casing be provided with along the fore-and-aft direction with the communicating circular pipe in first casing front and back both sides, both ends all are provided with sealed the pad around the circular pipe, the inner chamber of first casing just is located the outer wall left side of circular pipe and rotates through the bearing and is connected with first gear, the inner ring of bearing and the outer wall interference fit of circular pipe, and the outer loop of bearing and the inner wall fixed connection of first gear, there is first motor on the inner chamber left side of second casing through the support mounting, the output bolted connection of first motor has the second gear with first gear engaged with, the right side of first gear just is located the outside of circular pipe and is provided with the spiral fluted disc along circumference, the inner chamber of first casing just is located the right side of spiral fluted disc and is provided with the guide at The inner sides of the inner cavities of the three guide rails are respectively provided with a first sliding block in an inserted mode, the left side of the first sliding block is provided with a second sliding block in an inserted mode with the right side of the spiral fluted disc, the corresponding positions of the inner cavity of the circular tube and the second sliding block are provided with a first annular groove communicated with the inner cavity of the first shell, the inner sides of the third second sliding block are respectively provided with a first fan-shaped block, the inner sides of the three first fan-shaped blocks extend into the inner cavity of the circular tube through the first annular groove and are closed, and the inner cavity of the first shell and the outer wall of the circular tube are provided with a sealing mechanism.

Preferably, the closing mechanism comprises a third gear, a regular hexagon chute, a third slide block, a second fan-shaped block, a second annular groove, a circular plate, a chute, a cylindrical block, a second motor and a fourth gear;

the inner cavity of the first shell and the right side of the outer wall of the circular tube are rotatably connected with a third gear through a bearing, the inner ring of the bearing is in interference fit with the outer wall of the circular tube, the outer ring of the bearing is fixedly connected with the inner wall of the third gear, the right side of the third gear and the outer side of the circular tube are circumferentially provided with a regular hexagon chute, the left side of the inner cavity of the second shell is provided with a second motor through a bracket, the output end of the second motor is in screw connection with a fourth gear meshed with the third gear, the six sides of the inner cavity of the regular hexagon chute are respectively spliced with a third sliding block, the right sides of the six third sliding blocks are respectively provided with a second sector block, the corresponding positions of the inner cavity of the circular tube and the second sector block are provided with a second annular groove communicated with the inner cavity of the first shell, and the inner sides of the six second sector blocks are respectively extended into the inner cavity of the circular tube through, six the right side of second fan-shaped piece all is provided with the cylinder piece, the outer wall right-hand member of circular pipe and the right side that is located the second fan-shaped piece are provided with the circular slab, the left side of circular slab and six corresponding position departments of cylinder piece all seted up with the communicating spout in circular slab right side, the outer wall right side of cylinder piece is pegged graft with the inner chamber inboard of spout.

Preferably, the right end of the spiral fluted disc is provided with spiral teeth extending from outside to inside, and spiral grooves matched and spliced with the spiral teeth at the right end of the spiral fluted disc are formed in the left sides of the three second sliding blocks.

Preferably, the inner cavity of the guide rail is in a dovetail groove shape, and the first sliding block is inserted into the inner cavity of the guide rail in a matched mode.

Preferably, three of said first segments may close as a circular plate, and the diameter of the circular plate is greater than the inner diameter of the circular tube.

Preferably, the inner sides of six of said second segments are closable into circular pieces, and the diameter of the circular pieces is the same as the inner diameter of the circular tube.

Preferably, the sliding groove is obliquely arranged from inside to outside on the left side of the circular plate.

Compared with the prior art, the beneficial effects of the utility model are that: the gas and oil cut-off device of the diesel engine drives the fourth gear to rotate through the second motor, so that the third gear stops after rotating for 60 degrees under the action of the rotating force of the fourth gear, the six third sliding blocks slide in the inner cavity of the regular hexagon chute, the cylindrical block slides in and out of the inner cavity of the chute, the six second fan-shaped blocks rotate outwards in the inner cavity of the second annular groove under the matching of the third sliding blocks and the cylindrical block at corresponding positions, the right side of the inner cavity of the circular pipe can be opened or closed, the second gear is driven to rotate through the first motor, the first gear drives the spiral fluted disc to rotate under the action of the rotating force of the second gear, the three second sliding blocks drive the first fan-shaped blocks to move outwards or inwards under the action of the rotating force of the spiral fluted disc, the left side of the circular pipe is opened or closed, when the oil circuit and the air pipe need to be closed, the conveying quantity of fuel oil or air into a diesel engine cylinder is weakened in advance, the rotating speed of the diesel engine is reduced, so that an oil path or an air path of the diesel engine can be cut off quickly, the diesel engine is forced to stop safely, the operation is simple, the operation items of workers in emergency are reduced, the danger is avoided, and the practicability is high.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a front sectional view of the present invention;

FIG. 4 is an enlarged view of the point A of the present invention;

fig. 5 is an enlarged view of the position B of the present invention.

In the figure: 1. the gear transmission mechanism comprises a first shell, a second shell, a third shell, a fourth shell, a fifth shell, a sixth shell, a seventh shell, a sixth.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a diesel engine gas and oil cut-off device comprises a first shell 1, wherein the top end of the first shell 1 is provided with a second shell 2 communicated with the inner cavity of the first shell 1 along the front-back direction, the inner cavity of the first shell 1 is provided with circular tubes 3 communicated with the front side and the back side of the first shell 1 along the front-back direction, workers install the device in a gas inlet or oil inlet pipeline of a diesel engine to ensure that the left side and the right side of each circular tube 3 are respectively in threaded connection with a gas inlet pipe and an oil pipe to ensure that external air or fuel enters the pipeline in a cylinder of the diesel engine from the circular tubes 3, the front end and the back end of each circular tube 3 are respectively provided with a sealing gasket 4, each sealing gasket 4 can protect the joint and prevent gas or oil circuit leakage at the joint, the left side of the outer wall of the circular tube 3 in the inner cavity of the first shell 1 is rotatably connected with a first gear 5, the outer ring of the bearing is fixedly connected with the inner wall of the first gear 5, the left side of the inner cavity of the second shell 2 is provided with a first motor 6 through a support, the output end of the first motor 6 is in screwed connection with a second gear 7 meshed with the first gear 5, the first motor 6 drives the second gear 7 to rotate, so that the first gear 5 rotates under the action of the rotating force of the second gear 7, and the first gear 5 drives the spiral fluted disc 8 to rotate, the right side of the first gear 5 and the outer side of the circular tube 3 are circumferentially provided with the spiral fluted disc 8, the inner cavity of the first shell 1 and the right side of the spiral fluted disc 8 are circumferentially and clockwise provided with guide rails 9 at intervals of 120 degrees, the inner sides of the inner cavities of the three guide rails 9 are respectively inserted with a first sliding block 10, the left side of the first sliding block 10 is provided with a second sliding block 11 inserted with the right side of the spiral fluted disc 8, the corresponding position of the inner cavity of the circular tube 3 and the second sliding block 11 is provided with, three second slider drives first sector to inboard or outside removal under the effect of spiral fluted disc rotation force, and then removes to open or seal circular pipe inner chamber left side, the inboard of three second slider 11 all is provided with first sector 13, and the inboard of three first sector 13 extends into the inner chamber of circular pipe 3 and is closed by first ring channel 12, the width of three first sector 13 and 12 inner chamber width looks adaptations of first ring channel to prevent that the fuel from entering into the inner chamber of second casing 2, the inner chamber of first casing 1 and the outer wall right side that is located circular pipe 3 are provided with closing mechanism.

Preferably, the closing mechanism further comprises a third gear 14, a regular hexagon chute 15, a third slide block 16, a second sector block 17, a second annular groove 18, a circular plate 19, a chute 20, a cylindrical block 21, a second motor 22 and a fourth gear 23;

a third gear 14 is rotatably connected to the right side of the outer wall of the circular tube 3 in the inner cavity of the first housing 1 through a bearing, the inner ring of the bearing is in interference fit with the outer wall of the circular tube 3, the outer ring of the bearing is fixedly connected with the inner wall of the third gear 14, a regular hexagonal sliding slot 15 is circumferentially formed in the right side of the third gear 14 and outside the circular tube 3, a second motor 22 is mounted on the left side of the inner cavity of the second housing 2 through a bracket, a fourth gear 23 meshed with the third gear 14 is screwed to the output end of the second motor 22, the second motor 22 drives the fourth gear 23 to rotate, so that the third gear 14 stops rotating 60 degrees in the counter-clockwise direction under the action of the rotating force of the fourth gear 23, third sliding blocks 16 are inserted in six sides of the inner cavity of the regular hexagonal sliding slot 15, second sector blocks 17 are respectively arranged on the right sides of the six third sliding blocks 16, a second annular groove 18 communicated with the inner cavity of the first housing 1 is formed in the corresponding position of the inner cavity of the, the inner sides of the six second fan-shaped blocks 17 extend into the inner cavity of the circular pipe 3 through the second annular groove 18 and are closed, the width of the six second fan-shaped blocks 17 is matched with the width of the inner cavity of the second annular groove 18 so as to prevent fuel oil from entering the inner cavity of the second shell 2, the right sides of the six second fan-shaped blocks 17 are provided with cylindrical blocks 21, the regular hexagonal sliding chute 15 can drive the third sliding block 16 to reciprocate at six vertexes of the inner cavity of the regular hexagonal sliding chute 15 and six sides of the regular hexagonal sliding chute 15, the cylindrical blocks 21 slide inside and outside the inner cavity of the sliding chute 20 under the limiting action of the sliding chute 20, and further under the matching of the third sliding block 16 and the cylindrical blocks 21 at corresponding positions, the six second fan-shaped blocks 17 rotate outwards in the inner cavity of the second annular groove 18 so as to open or close the inner cavity of the circular pipe 3, a circular plate 19 is arranged at the right end of the outer wall of the circular pipe, the left side of the circular plate 19 and the positions corresponding to the six cylindrical blocks 21 are all provided with sliding chutes 20 communicated with the right side of the circular plate 19, and the right side of the outer wall of each cylindrical block 21 is inserted into the inner side of the inner cavity of each sliding chute 20.

As a preferred scheme, further, the right end of the spiral fluted disc 8 is provided with spiral teeth extending from outside to inside, the left sides of the three second sliding blocks 11 are all provided with spiral grooves adapted to the spiral teeth at the right end of the spiral fluted disc 8, and the three second sliding blocks 11 can drive the first fan-shaped block 13 to move outwards or inwards under the action of the rotating force of the spiral fluted disc 8.

Preferably, the inner cavity of the guide rail 9 is in a dovetail groove shape, and the first sliding block 10 is inserted into the inner cavity of the guide rail 9, so that the first sliding block 10 limits the second sliding block 11.

Preferably, the three first segments 13 are closed to form a circular plate having a diameter larger than the inner diameter of the circular tube 3, so that the three first segments 13 move inward or outward to open or close the left side of the inner cavity of the circular tube 3.

Preferably, the inner sides of the six second segments 17 are closed to form a circular block, and the diameter of the circular block is the same as the inner diameter of the circular tube 3, so that the six second segments 17 can be rotated outwards or inwards in the inner cavity of the second annular groove 18, and the right side of the inner cavity of the circular tube 3 can be opened or closed.

Preferably, the sliding groove 20 is disposed on the left side of the circular plate 19 in an inclined manner from inside to outside, so that the sliding groove 20 limits the position of the cylindrical block 21 and the cylindrical block 21 slides in the inner cavity of the sliding groove 20 in an inclined manner from inside to outside.

The following electric devices have the following types and functions:

first motor 6 and second motor 22: model 86BYG25OA, controlled by an external operating system, the first motor 6 can drive the second gear 7 to rotate, and the second motor 22 can drive the fourth gear 23 to rotate.

All the electrical components in the present application are connected with the power supply adapted to the electrical components through the wires, and an appropriate controller should be selected according to actual conditions to meet the control requirements, specific connection and control sequence.

When the device is installed, a worker installs the device in an air inlet or oil inlet pipeline of a diesel engine, the left side and the right side of a circular pipe 3 are respectively in threaded connection with an air inlet pipe and an oil pipe, a sealing mechanism is positioned at the innermost side of an oil path or an air path, external air or fuel enters the pipeline in a cylinder of the diesel engine from the circular pipe 3, the worker sequentially controls a second motor 22 and a first motor 6 to start when air or oil enters, the second motor 22 drives a fourth gear 23 to rotate clockwise, the third gear 14 is driven to rotate 60 degrees anticlockwise under the action of the rotating force of the fourth gear 23 to stop because the inner cavity of the third gear 14 is of a regular hexagon structure, six third sliding blocks 16 are respectively positioned at six sides of the inner cavity of a regular hexagon sliding chute 15, the regular hexagon sliding chute 15 drives the third sliding blocks 16 to respectively slide to six vertexes of the inner cavity of the regular hexagon sliding chute 15, because the chute 20 is obliquely arranged from inside to outside on the left side of the circular plate 19, the cylindrical block 21 slides outwards in the inner cavity of the chute 20 under the limiting action of the chute 20, and then under the matching of the third slider 16 and the cylindrical block 21 on the corresponding position, the six second fan-shaped blocks 17 rotate outwards in the inner cavity of the second annular groove 18, so as to remove the sealing on the right side of the inner cavity of the circular tube 3, the first motor 6 drives the second gear 7 to rotate clockwise, the first gear 5 rotates anticlockwise under the rotating force of the second gear 7 due to the meshing of the second gear 7 and the first gear 5, and the first gear 5 drives the spiral fluted disc 8 to rotate anticlockwise, because the right end of the spiral fluted disc 8 is provided with spiral teeth extending from outside to inside, and the left sides of the three second sliders 11 are all provided with spiral grooves which are in fit and plug-connection with the spiral teeth on the right end of the spiral fluted disc 8, under the limiting action of the first sliding block 10, the three second sliding blocks 11 drive the first fan-shaped blocks 13 to move outwards under the action of the rotating force of the spiral fluted disc 8, so as to remove the sealing on the left side of the inner cavity of the circular pipe 3, when an oil path and an air pipe need to be sealed, a worker controls a worker to firstly drive the first motor 6 to drive the second gear 7 to rotate anticlockwise, so that the three second sliding blocks 11 drive the first fan-shaped blocks 13 to move inwards on the left side of the inner cavity of the circular pipe 3, so that the left side of the circular pipe 3 can be sealed in advance, the conveying amount of fuel oil or air into a diesel engine cylinder is weakened in advance, the rotating speed of a diesel engine is reduced, the second motor 22 is controlled to be started, the second motor 22 drives the fourth gear 23 to rotate anticlockwise, the six second fan-shaped blocks 17 all rotate in the inner cavity of the second annular groove 18, so that the right side of the circular pipe 3 is sealed, make the staff operate other devices in proper order again and shut down to can cut off diesel engine oil circuit or gas circuit fast, force the diesel engine safety and stop, and easy operation reduces staff's operation item under emergency, and then avoids taking place danger, and the practicality is strong.

In the description of the present invention, it is to be understood that the terms "top end", "bottom end", "one end", "front side", "rear side", "other end", "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated; also, unless expressly stated or limited otherwise, the terms "mounted," "screwed," "plugged," "interference fit," "disposed," and the like are to be construed broadly, e.g., as a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a diesel engine gas cut-off, fuel cut-off device, includes first casing (1), its characterized in that: the top of the first shell (1) is provided with a second shell (2) communicated with the inner cavity of the first shell (1) along the front-back direction, the inner cavity of the first shell (1) is provided with circular tubes (3) communicated with the front side and the rear side of the first shell (1) along the front-back direction, the front end and the rear end of each circular tube (3) are respectively provided with a sealing gasket (4), the inner cavity of the first shell (1) is positioned on the left side of the outer wall of each circular tube (3) and is rotatably connected with a first gear (5) through a bearing, the inner ring of each bearing is in interference fit with the outer wall of each circular tube (3), the outer ring of each bearing is fixedly connected with the inner wall of each first gear (5), the left side of the inner cavity of the second shell (2) is provided with a first motor (6) through a support, the output end of each first motor (6) is in screwed connection with a second gear, a spiral fluted disc (8) is arranged on the right side of the first gear (5) and on the outer side of the circular tube (3) along the circumferential direction, guide rails (9) are arranged on the right side of the spiral fluted disc (8) along the circumferential direction and clockwise at intervals of 120 degrees, first sliding blocks (10) are inserted into the inner sides of the inner cavities of the three guide rails (9), second sliding blocks (11) inserted into the right side of the spiral fluted disc (8) are arranged on the left side of the first sliding blocks (10), first annular grooves (12) communicated with the inner cavity of the first shell (1) are formed in the positions, corresponding to the inner cavity of the circular tube (3) and the second sliding blocks (11), of the three second sliding blocks (11) are provided with first fan-shaped blocks (13), and the inner sides of the three first fan-shaped blocks (13) extend into the inner cavity of the circular tube (3) from the first annular grooves (12) and are closed, and a sealing mechanism is arranged in the inner cavity of the first shell (1) and on the right side of the outer wall of the circular tube (3).

2. The diesel engine gas and oil cut-off device according to claim 1, characterized in that: the sealing mechanism comprises a third gear (14), a regular hexagon chute (15), a third slide block (16), a second fan-shaped block (17), a second annular groove (18), a circular plate (19), a chute (20), a cylindrical block (21), a second motor (22) and a fourth gear (23);

the inner chamber of first casing (1) just is located the outer wall right side of circular pipe (3) and rotates through the bearing and is connected with third gear (14), the inner ring of bearing and the outer wall interference fit of circular pipe (3), and the outer loop of bearing and the inner wall fixed connection of third gear (14), regular hexagon spout (15) have been seted up along circumference in the outside that the right side of third gear (14) just is located circular pipe (3), there is second motor (22) on the inner chamber left side of second casing (2) through the support mounting, the output screw connection of second motor (22) has fourth gear (23) with third gear (14) engaged with, the inner chamber six sides of regular hexagon spout (15) all are pegged graft and are had third slider (16), six the right side of third slider (16) all is provided with second sector piece (17), the inner chamber of circular pipe (3) and the corresponding position department of second sector piece (17) have been seted up with first casing (1) inner chamber Communicating second ring channel (18), six the inboard of second fan-shaped piece (17) is extended into the inner chamber and the closure of circular pipe (3) by second ring channel (18), and is six the right side of second fan-shaped piece (17) all is provided with cylinder piece (21), the outer wall right-hand member of circular pipe (3) and the right side that is located second fan-shaped piece (17) are provided with circular slab (19), the left side of circular slab (19) and six corresponding position departments of cylinder piece (21) all seted up with communicating spout (20) in circular slab (19) right side, the outer wall right side of cylinder piece (21) is pegged graft with the inner chamber inboard of spout (20).

3. The diesel engine gas and oil cut-off device according to claim 1, characterized in that: the right-hand member of spiral fluted disc (8) is provided with the spiral tooth that extends from outer to interior, and the helicla flute of pegging graft with spiral fluted disc (8) right-hand member spiral tooth looks adaptation is all seted up in the left side of three second slider (11).

4. The diesel engine gas and oil cut-off device according to claim 1, characterized in that: the inner cavity of the guide rail (9) is in a dovetail groove shape, and the first sliding block (10) is connected with the inner cavity of the guide rail (9) in an adaptive inserting mode.

5. The diesel engine gas and oil cut-off device according to claim 1, characterized in that: the three first segments (13) can be closed to form a circular plate, and the diameter of the circular plate is larger than the inner diameter of the circular pipe (3).

6. The diesel engine gas and oil cut-off device according to claim 2, characterized in that: the inner sides of the six second segments (17) can be closed into circular blocks, and the diameter of the circular blocks is the same as the inner diameter of the circular pipe (3).

7. The diesel engine gas and oil cut-off device according to claim 2, characterized in that: the sliding groove (20) is obliquely arranged from inside to outside on the left side of the circular plate (19).

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