CN217108264U

CN217108264U - Fuel pump with high-sealing one-way valve

Info

Publication number: CN217108264U
Application number: CN202220729487.7U
Authority: CN
Inventors: 谯登江; 谯丹
Original assignee: Wenzhou Tianqi Auto Parts Co ltd
Current assignee: Wenzhou Tianqi Auto Parts Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-08-02
Anticipated expiration: 2032-03-31

Abstract

The utility model discloses a take high sealed check valve fuel pump, which comprises a housin, be equipped with outlet pipe on the casing, be provided with the check valve structure in outlet pipe, the check valve structure is including setting up the valve port in outlet pipe and the case that is used for blockking up this valve port, the valve frame has been erect in outlet pipe, be equipped with the guiding hole on the valve frame, one side of case is equipped with the valve rod of mobile interlude in the guiding hole, the opposite side of case is the plug, plug head perisporium is conical surface, be equipped with the open inclined plane of slope on the port of valve port, the perisporium butt of this conical surface is on this inclined plane, outlet pipe is equipped with vice valve port on the position adjacent with the inclined plane, be equipped with annular shutoff ring on the interior bottom perisporium of plug, when the plug is on the valve port, the shutoff ring blocks up on the port of vice valve port. Thus, the production difficulty is small, and the structure is more reliable and stable.

Description

Fuel pump with high-sealing one-way valve

Technical Field

The utility model relates to a fuel pump field, concretely relates to take high sealed check valve fuel pump.

Background

Traditional fuel pump is provided with the check valve structure in the export pipeline, this check valve structure is including establishing the valve port in the export pipeline, and can block up the case of valve port, and the stopper head tip that the case is spherical face, block up the valve port on the valve port and through spherical face butt, the spherical face structure of this case requires than higher to the smooth finish of spare part in actual production process, lead to the production degree of difficulty great, and be difficult for perceiving, lead to the qualification rate not high, it is relatively poor to have some products because the smooth finish of spherical face is not up to standard after the assembly, influence the performance of product.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims to provide a production degree of difficulty is little and reliable structure takes high sealed check valve fuel pump.

In order to achieve the above purpose, the utility model provides a following technical scheme: a fuel pump with a high-sealing one-way valve comprises a shell, an outlet pipeline is arranged on the shell, a one-way valve structure is arranged in the outlet pipeline, the one-way valve structure comprises a valve port arranged in the outlet pipeline and a valve core used for blocking the valve port, a valve frame is erected in the outlet pipeline, a guide hole is arranged on the valve frame, a valve rod movably inserted in the guide hole is arranged on one side of the valve core, the other side of the valve core is provided with a blocking head, the peripheral wall of the blocking head is a conical surface, an inclined surface which is inclined and opened is arranged at the port of the valve port, the peripheral wall of the conical surface is abutted against the inclined surface, the outlet pipeline is provided with an auxiliary valve port at the position adjacent to the inclined surface, and an annular blocking ring is arranged on the circumferential wall of the inner bottom of the blocking head, and when the blocking head is blocked on the valve port, the blocking ring blocks the port of the auxiliary valve port.

The section of the plugging ring is in a circular arc shape or a circular shape.

The valve core is made of fluororubber.

The utility model discloses a this kind of structure, it is lower to the requirement of spare part smooth finish to have after toper and the fluororubber material to be the end cap setting on the case, and secondary shutoff effect can be realized with the shutoff ring to vice valve port simultaneously, and it is good to reach sealed respond like this, and fluororubber is because the introduction of fluorine atom, gives rubber excellent heat resistance, oxidation resistance, oil resistance, corrosion resistance and resistant atmospheric ageing resistance moreover, can effectively improve the life of case for the structure is more reliable stable.

The invention is further described with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a block diagram of an embodiment of the present invention;

fig. 2 is an enlarged view of a in fig. 1.

Detailed Description

The present invention is described in detail below with reference to the following examples, which are only used for further illustration of the present invention, and should not be construed as limiting the scope of the present invention.

As shown in fig. 1-2, the present embodiment discloses a fuel pump with a high-sealing check valve, which comprises a housing 1, an outlet pipe 2 is arranged on the housing 1, a check valve structure is arranged in the outlet pipe 2, the check valve structure comprises a valve port 3 arranged in the outlet pipe 2 and a valve core 5 for blocking the valve port 3, a valve frame 6 is arranged in the outlet pipe 2, a guide hole 61 is arranged on the valve frame 6, a valve rod 51 movably inserted in the guide hole 61 is arranged on one side of the valve core 5, a blocking head 52 is arranged on the other side of the valve core 5, the peripheral wall of the blocking head 52 is a conical surface, an inclined surface 31 which is opened obliquely is arranged on the port of the valve port 3, the inclined surface 31 can provide a larger matching area when being matched with the blocking head 52, the peripheral wall of the conical surface of the blocking head 52 abuts against the inclined surface 31 or the front and rear end parts of the inclined surface 31, a secondary valve port 4 is arranged on the outlet pipe 2 adjacent to the inclined surface 31, an annular blocking ring 53 is arranged on the inner bottom peripheral wall of the blocking head 52, when the blocking head 52 blocks the valve port 3, the blocking ring 53 blocks the port of the auxiliary valve port 4, the valve core 5 is made of fluororubber, the valve core 5 is arranged on the valve frame 6, and the valve frame 6 is inserted into the outlet pipeline.

As shown in fig. 2, the cross section of the blocking ring 53 is arc-shaped, and the arc-shaped blocking ring has a larger blocking surface, so that when the blocking ring encounters backflow liquid, the valve core can quickly obtain backflow force to push the valve core to the auxiliary valve port and the valve port, and a blocking state is achieved, and the cross section of the blocking ring can also be circular. The design enables the plugging ring 53 to have good contractibility, and the structure is more reliable and stable when being matched with the auxiliary valve port 4, and the sealing effect is good.

By adopting the technical scheme, the plug on the valve core 5 is conical, the fluororubber material has lower requirements on the smoothness of parts, the secondary valve port 4 and the plugging ring 53 can realize the secondary plugging effect, and the double-plugging structure can achieve the good sealing effect, so that backflow is effectively prevented, and due to the introduction of fluorine atoms, the fluororubber endows the rubber with excellent heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance, the service life of the valve core 5 can be effectively prolonged, the structure is more reliable and stable, and the production difficulty is reduced.

Claims

1. The utility model provides a take high sealed check valve fuel pump, includes the casing, the casing on be equipped with the outlet pipeline in be provided with the check valve structure, the check valve structure including setting up the valve port in the outlet pipeline and be used for blockking up the case of this valve port, its characterized in that: the valve comprises an outlet pipeline, a valve body, a valve rod, a valve plug, a valve rod, an auxiliary valve port, an annular plugging ring and a valve plug, wherein the valve body is erected in the outlet pipeline, a guide hole is formed in the valve body, the valve rod movably inserted in the guide hole is arranged on one side of the valve plug, a plugging head is arranged on the other side of the valve plug, the peripheral wall of the plugging head is a conical surface, an inclined surface which is inclined and opened is arranged at the port of the valve port, the peripheral wall of the conical surface is abutted against the inclined surface, the outlet pipeline is provided with the auxiliary valve port at a position adjacent to the inclined surface, the inner bottom peripheral wall of the plugging head is provided with the annular plugging ring, when the plugging head is plugged on the valve port, the plugging ring is plugged on the port of the auxiliary valve port, and the valve plug is made of fluororubber.

2. The fuel pump with high seal check valve of claim 1, wherein: the section of the plugging ring is in a circular arc shape or a circular shape.