Safe ignition device of fuel injection pump

Abstract

The utility model provides a fuel injection pump safety ignition device, the fuel injection pump comprises a nozzle connecting pipe, a connecting cavity, an electromagnetic valve and a pump seat, the nozzle connecting pipe is connected above the pump seat through the connecting cavity, the electromagnetic valve is arranged on one side of the connecting cavity, the pump seat is further provided with a liquid inlet pipeline and a liquid outlet pipeline, and the liquid inlet pipeline is communicated with the liquid outlet pipeline. A connecting block is arranged at the position, close to the top, of one side of the connecting cavity in an outward protruding mode, an oil spraying pipe is arranged in the connecting cavity, the bottom of the oil spraying pipe is connected with a pump base, the top of the oil spraying pipe is connected with a nozzle connecting pipe, and the bottom of the oil spraying pipe is connected with the pump base. The liquid outlet pipeline is communicated with the liquid inlet pipeline through the oil tank, oil introduced into the oil injection pipe upwards enters the nozzle connecting pipe, the connecting block is used for being connected with a high-pressure ignition electrode in an inserted mode and used for igniting oil sprayed out of the nozzle connecting pipe, and a fireproof plate is arranged on one side of the top of the connecting block, so that the oil injection pump body cannot be burnt out during ignition.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear pump technical field, more specifically, relate to a kind of safety ignition device of fuel injection pump. BACKGROUND

[0002] Gear pump is the rotary pump that liquid is transported or is pressurized by the volume change and movement formed between pump cylinder and meshing gear. Two gears, pump body and front and back cover form two closed spaces, when gear rotates, the volume of the space on the side where gear disengages changes from small to large, vacuum is formed, liquid is sucked in, the volume of the space on the side where gear engages changes from large to small, and liquid is extruded into pipeline.

[0003] The oil sprayed by the existing fuel injection pump needs to be ignited, but lacks safety, and the fuel injection pump body is easily burned out. UTILITY MODEL CONTENTS

[0004] Therefore, in order to solve the above problems, the utility model provides a kind of safety ignition device of fuel injection pump, by setting up high-pressure ignition electrode and fireproof plate, fireproof plate covers lower pump body, and the fuel injection pump body is not easy to burn out when igniting the fuel injection pump.

[0005] A kind of safety ignition device of fuel injection pump, fuel injection pump includes nozzle connecting pipe 1, connecting cavity 2, electromagnetic valve 3, pump seat 4, the pump seat 4 is connected nozzle connecting pipe 1 by connecting cavity 2 above, the electromagnetic valve 3 is arranged in one side of connecting cavity 2, the pump seat 4 is also equipped with liquid inlet pipeline 5 and liquid outlet pipeline 6, it is characterized by: connecting block 7 is outwardly protruding and is arranged at the side near top of connecting cavity 2, oil injection pipe 21 is arranged in connecting cavity 2, the bottom of oil injection pipe 21 is connected with pump seat 4, the top of oil injection pipe 21 is connected with nozzle connecting pipe 1, the bottom of oil injection pipe 21 is connected with pump seat 4, after oil liquid enters pump seat 4 from liquid inlet pipeline 5, part is passed into oil injection pipe 21 upwards, another part is passed into liquid outlet pipeline 6 downwards, liquid outlet pipeline 6 is communicated with liquid inlet pipeline 5 by oil tank, oil liquid passed into oil injection pipe 21 is entered nozzle connecting pipe 1 upwards, connecting block 7 is used for inserting high-pressure ignition electrode 8, for igniting the oil sprayed by nozzle connecting pipe 1, fireproof plate 9 is arranged at the side of the top of connecting block 7, so that the fuel injection pump body is not burned out when igniting.

[0006] Further, first through hole 91 is arranged in the middle of fireproof plate 9, and recess 26 is arranged on the outer circle of connecting cavity 2, so that fireproof plate 9 is sleeved on the top of connecting cavity 2 through first through hole 91, and fireproof plate 9 is fixed through recess 26.

[0007] Further, the inner circle of first through hole 91 is clamped with the outer wall of recess 26.

[0008] Further, the covering area of fireproof plate 9 is greater than the outer circle of the whole of connecting cavity 2 and connecting block 7.

[0009] Further, the high-voltage ignition electrode 8 is provided with two, one for one.

[0010] Further, the two high-voltage ignition electrodes 8 are symmetrically arranged.

[0011] Further, the fireproof plate 9 is further provided with two second through holes 92 for avoiding the bottom of the high-voltage ignition electrode 8.

[0012] Further, the electrode end of the high-voltage ignition electrode 8 is obliquely arranged, and the electrode end of the high-voltage ignition electrode 8 is directed towards the nozzle connecting pipe 1.

[0013] The utility model discloses a safe ignition device of fuel injection pump, and the utility model discloses a kind of fuel injection pump, including nozzle connecting pipe 1, connecting cavity 2, solenoid valve 3, pump base 4, the pump base 4 top is connected nozzle connecting pipe 1 by connecting cavity 2, the solenoid valve 3 is arranged in one side of connecting cavity 2, the pump base 4 is further provided with liquid inlet pipeline 5 and liquid outlet pipeline 6, connecting block 7 is outwardly protruding and is provided with in the side of connecting cavity 2 close to top, connecting block 7 is used for inserting high-voltage ignition electrode 8, for igniting the oil that nozzle connecting pipe 1 sprays, the top side of connecting block 7 is equipped with fireproof plate 9, so that it will not burn the fuel injection pump body when igniting. DRAWINGS

[0014] Figure 1 It is the overall structural drawing of the safe ignition device of fuel injection pump of the utility model.

[0015] Figure 2 It is the partial sectional view of the safe ignition device of fuel injection pump of the utility model.

[0016] Figure 3 It is the pump base structure diagram of the safe ignition device of fuel injection pump of the utility model.

[0017] MAIN ELEMENT SYMBOL EXPLANATION

[0018] Nozzle connecting pipe 1, connecting cavity 2, oil injection pipe 21, recess 26, solenoid valve 3, pump base 4, liquid inlet pipeline 5, liquid outlet pipeline 6, connecting block 7, high-voltage ignition electrode 8, fireproof plate 9, first through hole 91, second through hole 92.

[0019] The following specific embodiments will be further explained in conjunction with the above drawings. Detailed Implementation Example 1

[0020] A safety ignition device for a fuel injection pump, the fuel injection pump including a nozzle connecting pipe 1, a connecting cavity 2, a solenoid valve 3, and a pump base 4, wherein the nozzle connecting pipe 1 is connected to the top of the pump base 4 through the connecting cavity 2, the solenoid valve 3 is disposed on one side of the connecting cavity 2, and the pump base 4 is also provided with an inlet pipe 5 and an outlet pipe 6, characterized in that: a connecting block 7 protrudes outward from the top side of the connecting cavity 2, a fuel injection pipe 21 is disposed inside the connecting cavity 2, the bottom of the fuel injection pipe 21 is connected to the pump base 4, and the top of the fuel injection pipe 21 is connected to... The nozzle connecting pipe 1 and the bottom of the fuel injection pipe 21 are connected to the pump base 4. After the oil enters the pump base 4 from the inlet pipe 5, part of it flows upward into the fuel injection pipe 21 and the other part flows downward into the outlet pipe 6. The outlet pipe 6 is connected to the inlet pipe 5 through the oil tank. The oil flowing into the fuel injection pipe 21 flows upward into the nozzle connecting pipe 1. The connecting block 7 is used to insert the high-voltage ignition electrode 8 to ignite the oil sprayed from the nozzle connecting pipe 1. A fireproof plate 9 is provided on one side of the top of the connecting block 7 so that the fuel injection pump body will not be burned during ignition.

[0021] The fireproof board 9 has a first through hole 91 in the middle and a groove 26 on the outer circle of the connecting cavity 2. The fireproof board 9 is sleeved on the top of the connecting cavity 2 through the first through hole 91 and the fireproof board 9 is fixed through the groove 26.

[0022] The inner circle of the first through hole 91 engages with the outer wall of the groove 26.

[0023] The coverage area of ​​the fireproof board 9 is larger than the outer circle of the connecting cavity 2 and the connecting block 7 as a whole.

[0024] Two high-voltage ignition electrodes 8 are provided, one for backup and one for use.

[0025] The two high-voltage ignition electrodes 8 are symmetrically arranged.

[0026] The fireproof plate 9 is also provided with two second through holes 92 for the bottom of the high-voltage ignition electrode 8 to be positioned.

[0027] The electrodes of the high-voltage ignition electrode 8 are inclined, and all electrodes of the high-voltage ignition electrode 8 face the nozzle connecting pipe 1.

[0028] The utility model discloses a safe ignition device of fuel injection pump, and the fuel injection pump comprises a nozzle connecting pipe 1, a connecting cavity 2, an electromagnetic valve 3 and a pump base 4, the pump base 4 is connected with the nozzle connecting pipe 1 through the connecting cavity 2, the electromagnetic valve 3 is arranged on one side of the connecting cavity 2, the pump base 4 is also provided with an inlet pipeline 5 and an outlet pipeline 6, a connecting block 7 is outwardly protrudingly arranged on one side of the connecting cavity 2 close to the top, an oil injection pipe 21 is arranged in the connecting cavity 2, the bottom of the oil injection pipe 21 is connected with the pump base 4, the top of the oil injection pipe 21 is connected with the nozzle connecting pipe 1, the bottom of the oil injection pipe 21 is connected with the pump base 4, after oil enters the pump base 4 from the inlet pipeline 5, part of the oil is upwardly introduced into the oil injection pipe 21, and the other part of the oil is downwardly introduced into the outlet pipeline 6, the outlet pipeline 6 is communicated with the inlet pipeline 5 through an oil tank, the oil introduced into the oil injection pipe 21 is upwardly introduced into the nozzle connecting pipe 1, the connecting block 7 is used for inserting a high-voltage ignition electrode 8, and the high-voltage ignition electrode 8 is used for igniting the oil sprayed from the nozzle connecting pipe 1, and a fireproof plate 9 is arranged on one side of the top of the connecting block 7, so that the fuel injection pump body is not burnt when igniting.

[0029] The above-mentioned embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it can not be understood as the limitation of the utility model patent scope. It should be pointed out that for ordinary skilled person in the art, without departing from the concept of the utility model, a plurality of deformation and improvement can be made, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be the appended claims.

Claims

1. A safety ignition device for fuel injection pump, the fuel injection pump comprising a nozzle connecting pipe (1), a connecting chamber (2), a solenoid valve (3), a pump base (4), the pump base (4) being connected to the nozzle connecting pipe (1) through the connecting chamber (2), the solenoid valve (3) being arranged on one side of the connecting chamber (2), the pump base (4) further being provided with an inlet pipe (5) and an outlet pipe (6), characterized in that: The connecting cavity (2) is outwardly convex at one side near the top and is provided with a connecting block (7), the connecting cavity (2) is provided with an oil injection pipe (21), the top of the oil injection pipe (21) is connected with a nozzle connecting pipe (1), the bottom of the oil injection pipe (21) is connected with a pump base (4), after oil liquid enters the pump base (4) from an inlet pipe (5), a part of the oil liquid is upwardly introduced into the oil injection pipe (21), and the other part of the oil liquid is downwardly introduced into an outlet pipe (6), the outlet pipe (6) is communicated with the inlet pipe (5) through an oil tank, the oil liquid introduced into the oil injection pipe (21) is upwardly introduced into the nozzle connecting pipe (1), the connecting block (7) is used for inserting a high-voltage ignition electrode (8) and is used for igniting oil sprayed from the nozzle connecting pipe (1), one side of the top of the connecting block (7) is provided with a fireproof plate (9), so that the fireproof plate (9) is not burnt when ignition. ​ 2. The safety injection device for an oil injection pump according to claim 1, wherein: The middle part of the fireproof plate (9) is provided with a first through hole (91), the outer circle of the connecting cavity (2) is provided with a groove (26), the fireproof plate (9) is sleeved on the top of the connecting cavity (2) through the first through hole (91), and the fireproof plate (9) is fixed through the groove (26).

3. A safety injection device for a fuel injection pump according to claim 2, characterized in that: The inner circle of the first through hole (91) is clamped with the outer wall of the groove (26).

4. The safety injection device of an oil injection pump according to claim 1, wherein: The covering area of the fireproof plate (9) is greater than the outer circle of the whole of the connecting cavity (2) and the connecting block (7).

5. The safety injection device for an oil injection pump according to claim 1, wherein: The high-voltage ignition electrode (8) is provided with two, one is used and the other is reserved.

6. The safety injection device for an oil jet pump according to claim 1, wherein: The two high-voltage ignition electrodes (8) are symmetrically arranged.

7. The safety injection device for an oil injection pump according to claim 1, wherein: The fireproof plate (9) is further provided with two second through holes (92) for avoiding the bottom of the high-voltage ignition electrode (8).

8. The safety injection device of an oil injection pump according to claim 1, wherein: The electrode end of the high-voltage ignition electrode (8) is obliquely arranged, and the electrode end of the high-voltage ignition electrode (8) faces the nozzle connecting pipe (1).

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