Fuel pump assembly with check block

Abstract

The fuel oil pump assembly comprises an oil storage barrel and a fuel oil pump, the fuel oil pump is contained in the oil storage barrel, a first oil outlet and a second oil outlet are formed in the upper end of the fuel oil pump, the first oil outlet is connected with an oil outlet pipe, the second oil outlet is connected with an oil return pipe, and the lower end of the oil return pipe is connected with an injection valve. An injection channel extending up and down is arranged on the inner wall of the oil storage barrel, the lower end of the injection channel is connected with the injection valve, a check block is detachably installed on the side wall of the upper end of the oil storage barrel, and the check block comprises a check block body which extends into the oil storage barrel and is blocked above the injection channel. The stop block can effectively prevent fuel oil from being directly sprayed out of the oil storage barrel, more fuel oil is left in the oil storage barrel, and therefore the rising speed of the liquid level in the oil storage barrel is increased. The stop block main body limits the injection height of the fuel oil and reduces the contact time of the fuel oil and air, so that the generation of bubbles is reduced, and the oil supply stability of the fuel oil pump is favorably stabilized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fuel pump assembly, in particular to a fuel pump assembly with a stop block. BACKGROUND

[0002] In the fuel supply system, the fuel pump assembly as the core component is usually installed in the oil tank, and the structural design plays a vital role in the fuel delivery efficiency and stability.

[0003] The fuel pump assembly generally comprises an oil storage bucket, a fuel pump, a jet pump, a filter screen, a pressure valve, an oil level sensor, a one-way valve and the like, and the fuel pump assembly draws fuel out of the oil tank and continuously delivers the fuel to the engine through the fuel supply pipeline.

[0004] The fuel pump has two oil outlets, one of which delivers oil to the engine, and the other of which is connected to the jet pump. However, when the jet pump sprays fuel into the oil storage bucket, the outlet of the jet channel is located at the upper end of the oil storage bucket, and a part of the fuel is directly sprayed out of the oil storage bucket and falls into the oil tank, which slows down the rising speed of the liquid level in the oil storage bucket and affects the fuel extraction efficiency of the fuel pump. In addition, when the jet pump sprays fuel too high, the fuel will fully contact and mix with air during the falling process, thereby generating a large amount of bubbles, which will interfere with the normal work of the fuel pump and cause the fuel supply pressure to fluctuate and the fuel supply amount to be unstable. SUMMARY

[0005] In view of the defects of the prior art, the purpose of the utility model is to provide a fuel pump assembly with a stop block.

[0006] The technical solution of the utility model is a fuel pump assembly with a stop block, which comprises an oil storage bucket and a fuel pump. The fuel pump is accommodated in the oil storage bucket, and the upper end of the fuel pump is provided with a first oil outlet and a second oil outlet. The first oil outlet is connected with an oil outlet pipe, the second oil outlet is connected with an oil return pipe, the lower end of the oil return pipe is connected with a jet valve, the inner wall of the oil storage bucket is provided with a jet channel extending upward and downward, the lower end of the jet channel is connected with the jet valve, and a stop block is detachably installed on the side wall of the upper end of the oil storage bucket. The stop block comprises a stop block main body which extends into the oil storage bucket and blocks above the jet channel.

[0007] Further, the block further comprises a vertical plate abutting against the inner wall of the oil storage barrel, the block body is vertically arranged at the bottom of the vertical plate, and two buckles are protruded outside the upper end of the vertical plate, and a downward opening groove is formed between the buckle and the outer wall of the vertical plate, and the groove is used for clamping the upper end of the sidewall of the oil storage barrel.

[0008] Further, the lower end of each of the two buckles is provided with a buckle, and the upper end of the outer wall of the oil storage barrel is protruded with two fixing blocks, and the lower end of each of the two fixing blocks is provided with a clamping groove, and the buckle is clamped into the clamping groove.

[0009] Further, the block body is directly above the upper end opening of the injection channel.

[0010] The fuel pump assembly with the block has the beneficial effects that the block body is directly above the injection channel, can effectively block the direct injection of fuel out of the oil storage barrel, makes more fuel stay in the oil storage barrel, thereby accelerating the rising speed of the liquid level in the oil storage barrel, the block body limits the injection height of the fuel, reduces the contact time of the fuel and air, thereby reducing the generation of bubbles, which is helpful for stabilizing the fuel supply of the fuel pump. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the impact of the oil storage barrel and the block of the utility model;

[0013] Figure 3 It is a schematic diagram of the structure of the block of the utility model;

[0014] Figure 4 It is a schematic diagram of the structure of the oil storage barrel of the utility model.

[0015] As shown in the figure: 1 - oil storage barrel, 11 - injection channel, 12 - fixing block, 121 - clamping groove, 2 - fuel pump, 21 - first oil outlet, 22 - second oil outlet, 3 - oil outlet pipe, 4 - oil return pipe, 5 - injection valve, 6 - block, 61 - block body, 62 - vertical plate, 63 - buckle, 631 - buckle, 64 - groove. DETAILED DESCRIPTION

[0016] In order to more directly and completely understand the technical scheme of the utility model, the following non-restrictive feature description is made in combination with the drawings of the utility model:

[0017] For example, Figure 1 — Figure 4As shown in the figure, a fuel pump assembly with a block, comprising a fuel tank 1 and a fuel pump 2, the fuel pump 2 is contained in the fuel tank 1, the upper end of the fuel pump 2 has a first oil outlet 21 and a second oil outlet 22, the first oil outlet 21 is connected with an oil outlet pipe 3, the second oil outlet 22 is connected with a return oil pipe 4, the lower end of the return oil pipe 4 is connected with a spray valve 5, the inner wall of the fuel tank 1 has a spray channel 11 extending upward and downward, the lower end of the spray channel 11 is connected with the spray valve 5, the upper end of the side wall of the fuel tank 1 is detachably installed with a block 6, the block 6 comprises a block main body 61 extending into the fuel tank 1 and blocking above the spray channel 11.

[0018] In order to facilitate the installation of the block 6, the block 6 further comprises a vertical plate 62 abutting against the inner wall of the fuel tank 1, the block main body 61 is vertically arranged at the bottom of the vertical plate 62, the outer side of the upper end of the vertical plate 62 is protrudingly provided with two buckles 63, the buckle 63 and the outer wall of the vertical plate 62 form a downward opening groove 64, and the groove 64 is used for clamping the upper end of the side wall of the fuel tank 1. The lower end of the two buckles 63 is respectively provided with a buckle block 631, the outer wall of the upper end of the fuel tank 1 is protrudingly provided with two fixed blocks 12, the lower end of the two fixed blocks 12 is respectively provided with a clamping groove 121, and the buckle block 631 is clamped into the clamping groove 121. After the buckle 63 is clamped into the clamping groove 121, the block 6 can be stably installed on the fuel tank 1 and is not easy to fall off. The connection mode of the buckle 63 and the clamping groove 121 also facilitates the disassembly and assembly of the block 6.

[0019] As shown in the figure, Figure 2 The block main body 61 blocks the upper end of the spray channel 11. Because the block main body 61 extends into the fuel tank 1, the fuel sprayed from the spray channel 11 is not easy to spray out of the fuel tank 1.

[0020] The block main body 61 blocks the upper end of the spray channel 11. Because the block main body 61 extends into the fuel tank 1, the fuel sprayed from the spray channel 11 is not easy to spray out of the fuel tank 1.

[0021] Of course, the above is only a preferred embodiment of the present application, and is not limited to the patent range of the present application. Any simple modification and equivalent structural change according to the content of the present application specification and drawings should be reasonably included in the patent protection range of the present application.

Claims

1. A fuel pump assembly with a check block, comprising a fuel reservoir and a fuel pump, the fuel pump being housed in the fuel reservoir, characterized in that: The upper end of the fuel pump is provided with a first oil outlet and a second oil outlet, the first oil outlet is connected with an oil outlet pipe, the second oil outlet is connected with an oil return pipe, the lower end of the oil return pipe is connected with a spray valve, the inner wall of the oil storage bucket is provided with a spray channel extending upward and downward, the lower end of the spray channel is connected with the spray valve, the upper end of the side wall of the oil storage bucket is detachably provided with a stop block, the stop block comprises a stop block body extending into the oil storage bucket and stopping above the spray channel.

2. A fuel pump assembly with a check block as defined in claim 1, characterized in that: The stop block further comprises a vertical plate abutting against the inner wall of the oil storage bucket, the stop block body is vertically arranged at the bottom of the vertical plate, the outer side of the upper end of the vertical plate is provided with two buckles, the buckles and the outer wall of the vertical plate form downwardly-opened grooves, and the grooves are used for clamping the upper end of the side wall of the oil storage bucket.

3. A fuel pump assembly with a check block as defined in claim 1, wherein: The lower end of each of the two buckles is provided with a buckle block, the outer wall of the upper end of the oil storage bucket is provided with two fixing blocks, the lower end of each of the two fixing blocks is provided with a clamping groove, and the buckle block is clamped into the clamping groove.

4. A fuel pump assembly with a check block as defined in claim 1, wherein: The stop block body stops directly above the upper opening of the spray channel.

Images