A delivery pump assembly for an internal combustion engine

Abstract

The utility model discloses a conveying pump subassembly of internal -combustion engine relates to internal -combustion engine technical field, including base, conveying pump body and pipeline connection subassembly, the upside of base is installed with motor and conveying pump body from right to left in proper order, and the side of conveying pump body is installed with output pipe, the side of output pipe is installed with pipeline connection subassembly, and pipeline connection subassembly includes drain pipe, flexible rubber joint, transition connector, outer butt joint pipe, convex ring, assembly half ring and recess, the side of drain pipe is connected with flexible rubber joint through flange. The conveying pump subassembly of internal -combustion engine, the flexible rubber joint between drain pipe, transition connector is the pipeline with flexible, and its structure setting allows the deformation, and then can allow the pipeline to float freely in a certain range, and can absorb and attenuate vibration to enhance the buffering performance, convenient absorption motor vibration transmission stress, and then make the pipeline fatigue service life extension.

Description

Technical Field

[0001] This utility model relates to the field of internal combustion engine technology, specifically to a delivery pump assembly for an internal combustion engine. Background Technology

[0002] An internal combustion engine is a heat engine that generates heat energy by burning fuel inside the machine and directly converts it into mechanical energy. It is the core power equipment for modern industry and transportation. The delivery pump of an internal combustion engine is a key component specifically designed to deliver fuel from the storage area to the injection device. Its core function is to ensure the efficient operation of the fuel system.

[0003] For example, the utility model application with application number 202320676089.8 discloses a fuel transfer pump. Similar transfer pumps to the above application still have the following shortcomings: during use, although it is convenient to disassemble and assemble the pipeline, it cannot reduce the stress transmitted by the motor vibration, thus limiting the service life of the pipeline. Utility Model Content

[0004] The purpose of this invention is to provide a delivery pump assembly for an internal combustion engine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a delivery pump assembly for an internal combustion engine, comprising a base, a delivery pump body, and a pipe connection assembly. A motor and the delivery pump body are sequentially mounted from right to left on the upper side of the base. An output pipe is mounted on one side of the delivery pump body, and a pipe connection assembly is mounted on one side of the output pipe. The pipe connection assembly includes a drain pipe, a flexible rubber joint, a transition pipe, an outer connecting pipe, a convex ring, an assembly half-ring, and grooves. A flexible rubber joint is connected to one side of the drain pipe via a flange, and a transition pipe is connected to one side of the flexible rubber joint via a flange. An outer connecting pipe is provided on one side of the transition pipe, and two convex rings are fixed to the outer sides of both the transition pipe and the outer connecting pipe. An assembly half-ring is installed on the outer side of the transition pipe and the outer connecting pipe, and four grooves are formed on the inner side of the assembly half-ring.

[0006] Furthermore, an inlet pipe is connected to the upper side of the output pipe, and the inlet pipe is interconnected with the outlet pipe through the output pipe.

[0007] Furthermore, there are two assembly semi-rings, and the grooves inside the assembly semi-rings are fitted into the protruding rings.

[0008] Furthermore, the pipe connection assembly also includes connecting lugs, with connecting lugs integrally fixed on both outer sides of the assembled semi-ring, and threaded holes provided in the middle of the connecting lugs.

[0009] Furthermore, a water-cooling assembly is installed on the outside of the pump body, and the water-cooling assembly includes a cooling frame and a cooling pipe. The cooling pipe is arranged on the inner side of the cooling frame and is spirally wound around the outside of the pump body.

[0010] Furthermore, the water-cooling assembly also includes an inlet pipe and an outlet pipe, with the inlet pipe and outlet pipe respectively connected to both ends of the cooling pipe.

[0011] Furthermore, an output shaft is provided on the side of the motor near the pump body, and a support frame is fixed on the upper side of the base.

[0012] Furthermore, a bearing is provided between the output shaft and the support frame, and the output shaft is rotatably connected to the support frame through the bearing.

[0013] This utility model provides a delivery pump assembly for an internal combustion engine, which has the following beneficial effects:

[0014] This utility model is equipped with a pipe connection assembly. Two assembled half-rings can be set outside the transition pipe and the outer connecting pipe. The connecting lugs on the side of the assembled half-rings can be fastened with bolts, so that the groove of the assembled half-rings can be fitted and connected with the convex rings of the transition pipe and the outer connecting pipe. The setting of multiple convex rings can extend the leakage path to improve the connection sealing performance. Compared with the traditional flange-driven connection, this connection method reduces the number of connection points, making it easier to disassemble and assemble, and convenient to replace different outer connecting pipes.

[0015] This utility model is equipped with a pipe connection assembly. The inlet pipe facilitates the injection of fuel into the internal combustion engine, and the outlet pipe facilitates the pumping out of fuel. The flexible rubber joint between the outlet pipe and the transition pipe is a flexible pipe with a structure that allows deformation, thereby allowing the pipeline to float freely within a certain range. It can also absorb and attenuate vibration to enhance buffering performance, facilitate the absorption of stress transmitted by motor vibration, and thus extend the fatigue service life of the pipeline.

[0016] This utility model is equipped with a water-cooling component. The cooling pipe inside the cooling frame is spirally wound around the outside of the delivery pump body, which can exchange heat and cool the delivery pump body and the fuel inside. The water inlet pipe and water outlet pipe at both ends of the cooling pipe are connected to the external cooling equipment, which can cool the coolant in the cooling pipe and then circulate it back, which facilitates the continuous cooling and temperature reduction of the delivery pump body. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a delivery pump assembly for an internal combustion engine according to the present invention;

[0018] Figure 2 This is a schematic diagram of the exploded semi-ring structure of the delivery pump assembly of an internal combustion engine according to the present invention.

[0019] Figure 3 This is a half-sectional view of the cooling frame structure of the delivery pump assembly of an internal combustion engine according to the present invention.

[0020] In the diagram: 1. Base; 2. Motor; 3. Pump body; 4. Output pipe; 5. Inlet pipe; 6. Pipe connection assembly; 601. Drain pipe; 602. Flexible rubber joint; 603. Transition pipe; 604. External connecting pipe; 605. Convex ring; 606. Assembled half ring; 607. Insert groove; 608. Connecting ear plate; 7. Water cooling assembly; 701. Cooling frame; 702. Cooling pipe; 703. Inlet pipe; 704. Outlet pipe; 8. Output shaft; 9. Support frame; 10. Bearing. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] like Figure 1 and Figure 3 As shown, a delivery pump assembly for an internal combustion engine includes a base 1, a delivery pump body 3, and a pipe connection assembly 6. A motor 2 and the delivery pump body 3 are sequentially mounted from right to left on the upper side of the base 1. An output pipe 4 is mounted on one side of the delivery pump body 3. A water-cooling assembly 7 is mounted on the outside of the delivery pump body 3. The water-cooling assembly 7 includes a cooling frame 701 and a cooling pipe 702. The cooling pipe 702 is arranged inside the cooling frame 701 and spirally wound around the outside of the delivery pump body 3. The water-cooling assembly 7 also includes an inlet pipe 703 and an outlet pipe 704. The two ends of the cooling pipe 702 are respectively connected to the inlet pipe 703 and the outlet pipe 704. An output shaft 8 is located on the side of the motor 2 near the delivery pump body 3. A support frame 9 is also fixed on the upper side of the base 1. A bearing 10 is arranged between the output shaft 8 and the support frame 9. The output shaft 8 is rotatably connected to the support frame 9 via the bearing 10. The upper side of the output pipe 4 is connected to the liquid inlet pipe 5, and the liquid inlet pipe 5 is interconnected with the liquid outlet pipe 601 via the output pipe 4. The liquid inlet pipe 5 facilitates the intake of internal combustion engine fuel, and the liquid outlet pipe 601 facilitates the pumping out of fuel. The motor 2 and the output shaft 8 are the power mechanisms of the delivery pump body 3. The support frame 9 can rotate and support the output shaft 8 via the bearing 10, reducing the possibility of the center offset of the output shaft 8. The cooling pipe 702 inside the cooling frame 701 is spirally wound around the outside of the delivery pump body 3, which can exchange heat and cool the delivery pump body 3 and the fuel therein. The water inlet pipe 703 and the water outlet pipe 704 at both ends of the cooling pipe 702 are connected to the external cooling equipment, which can cool the coolant in the cooling pipe 702 and then circulate it back, which facilitates the continuous cooling of the delivery pump body 3.

[0023] like Figure 1 and Figure 2As shown, a pipe connection assembly 6 is installed on one side of the output pipe 4. The pipe connection assembly 6 includes a drain pipe 601, a flexible rubber joint 602, a transition pipe 603, an outer connecting pipe 604, a convex ring 605, an assembly half-ring 606, and a groove 607. The flexible rubber joint 602 is connected to one side of the drain pipe 601 via a flange, and the transition pipe 603 is connected to one side of the flexible rubber joint 602 via a flange. An outer connecting pipe 604 is provided on one side of the transition pipe 603, and two convex rings 605 are fixed on the outer sides of both the transition pipe 603 and the outer connecting pipe 604. An assembly half-ring 606 is installed on the outside of the transition pipe 603 and the outer connecting pipe 604, and four grooves 607 are opened on the inner side of the assembly half-ring 606. There are two assembly half-rings 606, and the grooves 607 inside the assembly half-ring 606 are fitted with the convex rings 605. The pipe connection assembly 6 also includes a connecting lug 608, and the two outer sides of the assembly half-ring 606 are integrally formed. The connecting lug 608 is fixedly provided, and a threaded hole is provided in the middle of the connecting lug 608. Two assembly half-rings 606 can be set outside the transition pipe 603 and the outer connecting pipe 604. The connecting lugs 608 on the side of the assembly half-rings 606 can be fastened with bolts, so that the groove 607 of the assembly half-rings 606 can be fitted and connected with the convex rings 605 of the transition pipe 603 and the outer connecting pipe 604. The setting of multiple convex rings 605 can extend the leakage path to improve the connection sealing. Compared with the traditional flange drive connection, this connection method reduces the number of connection points, is easier to disassemble and assemble, and facilitates the replacement of different outer connecting pipes 604. The flexible rubber joint 602 between the drain pipe 601 and the transition pipe 603 is a flexible pipe with a structure that allows deformation, thereby allowing the pipeline to float freely within a certain range, and can absorb and attenuate vibration to enhance the buffer performance, which can easily absorb the stress transmitted by the vibration of the motor 2, thereby extending the fatigue service life of the pipeline.

[0024] In summary, as Figures 1-3 As shown, the delivery pump assembly of the internal combustion engine can first draw fuel into the internal combustion engine through the inlet pipe 5, and then pump out the fuel through the outlet pipe 601 of the delivery pump body 3. In use, the flexible rubber joint 602 between the outlet pipe 601 and the transition pipe 603 is a flexible pipe with a structure that allows deformation, thereby allowing the pipeline to float freely within a certain range and absorb and attenuate vibration to enhance buffer performance. It is convenient to absorb the stress transmitted by the vibration of the motor 2, thereby extending the fatigue service life of the pipeline. During use, the cooling pipe 702 inside the cooling frame 701 is spirally wound around the outside of the delivery pump body 3 to exchange heat and cool the delivery pump body 3 and the fuel therein. The water inlet pipe 703 and the water outlet pipe 704 at both ends of the cooling pipe 702 are connected to the external cooling equipment, which can cool the coolant in the cooling pipe 702 and then circulate it back, which is convenient for the continuous cooling of the delivery pump body 3.

[0025] When disassembling and assembling the transition pipe 603 and the outer connecting pipe 604, simply remove the two assembly half-rings 606. Conversely, during installation, place the two assembly half-rings 606 outside the transition pipe 603 and the outer connecting pipe 604. The connecting lugs 608 on the side of the assembly half-rings 606 can be fastened with bolts, so that the groove 607 of the assembly half-rings 606 fits into the convex rings 605 of the transition pipe 603 and the outer connecting pipe 604. The multiple convex rings 605 can extend the leakage path to improve the connection sealing. Compared with the traditional flange-driven connection method, this connection method reduces the number of connection points, making it easier to disassemble and assemble, and convenient to replace different outer connecting pipes 604. This completes the usage process of the delivery pump assembly of the internal combustion engine.

[0026] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A delivery pump assembly for an internal combustion engine, comprising a base (1), a delivery pump body (3), and a pipeline connection assembly (6), characterized in that, The base (1) is equipped with a motor (2) and a pump body (3) from right to left on its upper side. An output pipe (4) is installed on one side of the pump body (3). A pipe connection assembly (6) is installed on one side of the output pipe (4). The pipe connection assembly (6) includes a drain pipe (601), a flexible rubber joint (602), a transition pipe (603), an outer connecting pipe (604), a convex ring (605), an assembly half ring (606), and a groove (607). A flexible rubber joint (602) is connected to one side of the drain pipe (601) via a flange. A transition pipe (603) is connected to one side of the flexible rubber joint (602) via a flange. An outer connecting pipe (604) is provided on one side of the transition pipe (603). Two convex rings (605) are fixed on the outer sides of both the transition pipe (603) and the outer connecting pipe (604). An assembly half-ring (606) is installed on the outside of the external connecting pipe (604), and four grooves (607) are opened on the inner side of the assembly half-ring (606). The pipe connection assembly (6) also includes a connecting ear plate (608). The connecting ear plate (608) is integrally fixed on both sides of the assembly half-ring (606), and a threaded hole is opened in the middle of the connecting ear plate (608). A water cooling assembly (7) is installed on the outside of the pump body (3), and the water cooling assembly (7) includes a cooling frame (701) and a cooling pipe (702). The cooling pipe (702) is provided on the inner side of the cooling frame (701), and the cooling pipe (702) is spirally wound around the outside of the pump body (3). The water cooling assembly (7) also includes an inlet pipe (703) and an outlet pipe (704). The two ends of the cooling pipe (702) are respectively connected to the inlet pipe (703) and the outlet pipe (704).

2. The delivery pump assembly for an internal combustion engine according to claim 1, characterized in that, The upper side of the output pipe (4) is connected to the inlet pipe (5), and the inlet pipe (5) is connected to the drain pipe (601) through the output pipe (4).

3. The delivery pump assembly for an internal combustion engine according to claim 1, characterized in that, Two assembly half-rings (606) are provided, and the groove (607) inside the assembly half-ring (606) is fitted and connected to the convex ring (605).

4. The delivery pump assembly for an internal combustion engine according to claim 1, characterized in that, The motor (2) has an output shaft (8) on the side near the pump body (3), and a support frame (9) is fixed on the upper side of the base (1).

5. The delivery pump assembly for an internal combustion engine according to claim 4, characterized in that, A bearing (10) is provided between the output shaft (8) and the support frame (9), and the output shaft (8) is rotatably connected to the support frame (9) through the bearing (10).

Images