Oil injection pump oil outlet valve matching part seat sealing test bench

Abstract

The utility model provides a sealing test bench for a matching part seat of an oil injection pump oil outlet valve, which relates to the technical field of matching part seat sealing tests and comprises a test box and further comprises an oil injection pump body fixed inside the test box and used for being connected with an oil liquid source so as to supply oil liquid to the matching part seat. The upper butt joint disc is fixed at the upper part of the test box, and the upper butt joint disc is communicated with the output end of the fuel injection pump body; and a plurality of butt joint seats are arranged. According to the technical scheme, before the test is started, a user correspondingly installs matching part seats to be detected on butt joint seats of different specifications according to the size specifications of the matching part seats to be detected, and for the butt joint seats which are not used temporarily, the sealing caps are screwed to prevent oil leakage, an oil source is connected with the oil injection pump body, and the oil injection pump body serves as a power core, so that the butt joint seats are not used temporarily. Oil liquid is pressurized and then conveyed to an internal oil way, and the pressurized oil liquid is conveyed to the upper butt joint disc through the output end of the oil injection pump body and then shunted to each butt joint seat through the upper butt joint disc.

Description

Technical Field

[0001] This utility model relates to the field of component seat sealing test technology, and in particular to a test bench for sealing of fuel injection pump outlet valve component seat. Background Technology

[0002] The fuel injection pump delivery valve seat sealing test is a key item in the maintenance of diesel engine fuel systems. It is used to test the sealing performance between the delivery valve and the valve seat to ensure the normal operation of the fuel injection system.

[0003] In traditional inspection, only a single mating seat can be connected and sealed at a time, which is inefficient and time-consuming.

[0004] Frequent disassembly and assembly of tooling is required, and the coverage of a single inspection is limited, making it difficult to meet the needs of batch maintenance. Especially when maintaining the fuel system of multi-cylinder engines, the method of inspecting each component individually leads to a longer overall maintenance cycle, which restricts the improvement of maintenance efficiency. There is an urgent need to optimize the inspection tooling or process to achieve simultaneous inspection of multiple mating parts. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies that can only perform connection and sealing tests on a single mating component at a time.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sealing test bench for an injection pump outlet valve assembly seat, comprising a test chamber, and further comprising: an injection pump body, the injection pump body being fixed inside the test chamber, the injection pump body being connected to an oil source to achieve oil supply to the assembly seat; an upper docking plate, the upper docking plate being fixed to the upper part of the test chamber, and the upper docking plate being connected to the output end of the injection pump body; and a docking seat, the docking seat being provided in multiple locations, the multiple docking seats being used to connect the assembly seats of different sizes for sealing purposes, and an external sealing cap being screwed onto the outside of the idle assembly seat.

[0007] In at least some embodiments, a support base is fixedly installed inside the test chamber, and the fuel injection pump body is fixedly installed on the upper part of the support base.

[0008] In at least some embodiments, the upper part of the test chamber is provided with a limiting component, the limiting component including an upper limiting plate, the upper limiting plate being fixed to the upper part of the test chamber by a screw, and a lower limiting plate located below the upper limiting plate being screwed to it.

[0009] In at least some embodiments, a spiral tube is provided between the upper limit plate and the lower limit plate, the spiral tube being used to be screwed to the screw rod, and a clamping cavity is formed between the upper limit plate and the lower limit plate.

[0010] In at least some embodiments, an upper docking plate is inserted into the lower part of the upper docking plate, the upper docking plate and the lower docking plate are located inside the clamping cavity, and a plurality of input seats are fixedly connected to the lower part of the lower docking plate. The input seats are connected to the output end of the fuel injection pump body through a transmission pipe.

[0011] In at least some embodiments, a rotating cavity is formed between the upper and lower mating plates, and a disk is rotatably installed inside the rotating cavity of the upper and lower mating plates. The lower part of the disk has an annular channel that communicates with a plurality of the input seats. The disk also has a through hole. When the disk rotates, the through hole is movably aligned and communicates with a plurality of the mating seats to perform an oil transfer action for the specified mating seats.

[0012] In at least some embodiments, a gear ring is rotatably mounted on the exterior of the upper and lower docking plates, a motor is fixedly mounted on the upper part of the test chamber, a gear is fixedly connected to the output end of the motor, the gear meshes with the gear ring, a magnetic ring is fixedly connected inside the gear ring, the magnetic ring is magnetically connected to the disk, and the disk is driven to rotate by the rotation of the magnetic ring, thereby realizing different oil transfer actions of the docking seats.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] In this invention, before the test begins, the user installs the component to be tested onto mating seats of different sizes according to their dimensions. For mating seats not currently in use, the sealing cap is tightened to prevent oil leakage. The oil source is connected to the fuel injection pump body, which acts as the power core, pressurizing the oil and delivering it to the internal oil circuit. The pressurized oil is then transmitted to the upper mating plate via the output end of the fuel injection pump body, and then distributed from the upper mating plate to each mating seat, allowing the oil to enter all installed component seats simultaneously. During the pressure test, the test bench precisely controls the pressure parameters of the fuel injection pump body to apply the same and standard test pressure to each component seat. The tester can simultaneously observe the pressure changes of multiple component seats and quickly determine the sealing performance of each component seat based on indicators such as the pressure drop rate and the holding time. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a sealing test bench for an injection pump outlet valve assembly seat.

[0016] Figure 2 This utility model provides a three-dimensional structural diagram of the internal structure of the test chamber in a test bench for sealing the fuel injection pump outlet valve assembly seat.

[0017] Figure 3This utility model provides a three-dimensional structural diagram of the explosion of the limiting component in the sealing test bench of the fuel injection pump outlet valve assembly seat;

[0018] Figure 4 This utility model presents a three-dimensional structural diagram of the lower limit plate cross-section in a sealing test bench for an oil injection pump outlet valve assembly seat.

[0019] Legend: 1. Test chamber; 2. Limiting assembly; 3. Upper docking plate; 4. Docking seat; 5. Fuel injection pump body; 6. Support base; 7. Motor; 8. Gear; 9. Gear ring; 10. Magnetic ring; 11. Lower docking plate; 12. Input seat; 13. Magnetic disk; 14. Through hole; 15. Annular channel;

[0020] 201. Upper limit dial; 202. Lower limit dial; 203. Screw tube. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example, according to Figure 1-4 As shown in the figure, the present invention provides a fuel injection pump outlet valve assembly sealing test bench, which solves the problem of low testing efficiency of traditional single assembly seats;

[0024] Specifically, the test chamber 1 includes: an injection pump body 5, which is fixed inside the test chamber 1 and is used to connect to an oil source to achieve oil supply to the mating parts; an upper mating plate 3, which is fixed to the upper part of the test chamber 1 and is connected to the output end of the injection pump body 5; and a mating seat 4, which has multiple mating seats and is used to connect mating parts of different sizes for sealing purposes, with sealing caps screwed onto the outside of the unused mating parts.

[0025] Before the test begins, the user installs the mating parts to be tested on mating seats 4 of different sizes according to their dimensions. For mating seats 4 that are not currently in use, the sealing cap is tightened to prevent oil leakage. The oil source is connected to the injection pump body 5. The injection pump body 5 serves as the power core, pressurizing the oil and delivering it to the internal oil circuit. The pressurized oil is transmitted to the upper mating plate 3 through the output end of the injection pump body 5, and then distributed from the upper mating plate 3 to each mating seat 4, so that the oil can enter all the installed mating parts at the same time.

[0026] During the pressure test, the test bench precisely controls the pressure parameters of the fuel injection pump body 5, applying the same and standard test pressure to each component seat. Test personnel can simultaneously observe the pressure changes of multiple component seats and quickly determine the sealing performance of each component seat based on indicators such as pressure drop rate and holding time. This multi-channel parallel testing method significantly shortens the overall testing time and improves work efficiency compared to traditional single-component sequential testing.

[0027] In addition, the test bench features a variety of docking seats 4, which can be adapted to couple seats of different sizes and specifications. This reduces the frequency of tooling changes due to differences in couple size. After the test is completed, the user only needs to remove the couple seat with the failed seal for repair or replacement, and the remaining couple seats can continue to be tested in a new round. This avoids repeated disassembly and assembly and waiting time, and realizes efficient connection and batch processing of the test process. It fundamentally solves the problems of low efficiency and long time consumption of traditional test methods.

[0028] In this embodiment, a support base 6 is fixedly installed inside the test chamber 1, and the fuel injection pump body 5 is fixedly installed on the upper part of the support base 6. A limiting component 2 is provided on the upper part of the test chamber 1. The limiting component 2 includes an upper limiting plate 201, which is fixed to the upper part of the test chamber 1 by a screw and screwed to a lower limiting plate 202 located below the upper limiting plate 201. A screw tube 203 is also provided between the upper limiting plate 201 and the lower limiting plate 202. The screw tube 203 is used to be screwed to the screw. A clamping cavity is formed between the upper limiting plate 201 and the lower limiting plate 202. An upper connecting plate 3 is inserted into the lower part of the upper connecting plate 3. The upper connecting plate 3 and the lower connecting plate 11 are located inside the clamping cavity. Several input seats 12 are fixedly connected to the lower part of the lower connecting plate 11. The input seats 12 are connected to the output end of the fuel injection pump body 5 through a transmission pipe.

[0029] Through the coordinated design of the support base 6 and the limiting component 2, a stable and easy-to-maintain oil transmission system is constructed.

[0030] The support base 6 serves as the basic structure, firmly fixing the fuel injection pump body 5 inside the test chamber 1 to ensure its stability under high pressure and reduce the impact of vibration on the accuracy of oil delivery.

[0031] In the limiting assembly 2, the upper limiting plate 201 is connected to the upper part of the test chamber 1 through a screw to form a rigid frame. The lower limiting plate 202 is connected to the upper limiting plate 201 through a screw tube 203 to achieve an adjustable screw connection. The clamping cavity between the two provides a precise positioning space for the upper connecting plate 3 and the lower connecting plate 11. This structural design not only facilitates the installation and disassembly of the connecting plates, but also allows for precise control of the positional accuracy of the connecting plates by adjusting the mating depth between the screw tube 203 and the screw, ensuring the sealing of the oil transmission path.

[0032] The fitting design of the upper docking plate 3 and the lower docking plate 11 forms a complete oil channel. The input seat 12 at the bottom of the lower docking plate 11 is connected to the output end of the fuel injection pump body 5 through the transmission pipe. When the fuel injection pump body 5 pressurizes and delivers oil to the transmission pipe, the oil enters the lower docking plate 11 through the input seat 12, and then flows to each docking seat 4 through the upper docking plate 3. This layered oil transmission structure effectively reduces pressure loss and ensures that each docking seat 4 can obtain a stable and sufficient oil supply. At the same time, the existence of the clamping cavity can also protect the docking plates, reduce the interference of external factors, and improve the reliability and service life of the system. In actual work, this structure can quickly complete the replacement and maintenance of the docking plates, adapt to the needs of different testing tasks, and further improve the working efficiency of the test bench.

[0033] In this embodiment, a rotating cavity is formed between the upper docking plate 3 and the lower docking plate 11. A disk 13 is rotatably installed inside the rotating cavity of the upper docking plate 3 and the lower docking plate 11. An annular channel 15 communicating with several input seats 12 is opened at the lower part of the disk 13. The disk 13 also has a through hole 14. When the disk 13 rotates, the through hole 14 is movably aligned and communicates with several docking seats 4 to perform the oil transfer action of the specified docking seat 4. A gear ring 9 is rotatably installed on the outside of the upper docking plate 3 and the lower docking plate 11. A motor 7 is fixedly installed on the upper part of the test chamber 1. A gear 8 is fixedly connected to the output end of the motor 7. The gear 8 is meshed with the gear ring 9. A magnetic ring 10 is fixedly connected inside the gear ring 9. The magnetic ring 10 is magnetically connected to the disk 13. The disk 13 is driven by the rotation of the magnetic ring 10 to perform a self-rotation action, thereby realizing the oil transfer action of different docking seats 4.

[0034] Through the innovative design of magnetic drive and annular channel 15, flexible switching and precise control of oil transmission path are achieved;

[0035] Motor 7 drives gear 8 to rotate. Gear 8 meshes with gear ring 9, causing gear ring 9 and magnetic ring 10 fixedly connected to it to rotate synchronously. The magnetic connection between magnetic ring 10 and disk 13 transmits rotational power to disk 13, causing it to rotate in the rotating cavity. The annular channel 15 at the bottom of disk 13 and input socket 12 are always in a continuous state to ensure that oil can continuously enter the interior of disk 13.

[0036] When the disk 13 rotates, the through holes 14 on it will align with different docking seats 4 as the disk 13 rotates, thereby realizing the transfer of oil to the designated docking seat 4.

[0037] The advantage of this design is that by controlling the rotation angle and direction of the motor 7, the rotation position of the disk 13 can be precisely controlled, thereby selectively delivering oil to a specific docking seat 4.

[0038] For example, when multiple mating seats need to be cyclically tested, the motor 7 can drive the disk 13 to align the through hole 14 with each mating seat 4 in sequence to achieve individual testing; while when multiple mating seats need to be tested simultaneously, the position of the disk 13 can be adjusted so that the through hole 14 is simultaneously connected with multiple mating seats 4.

[0039] The design of the annular channel 15 ensures the pressure uniformity of the oil during transmission, avoiding pressure fluctuations caused by path differences. In addition, the magnetic transmission method eliminates the need for direct contact, reducing mechanical wear and the probability of failure, and improving the stability and service life of the system. This intelligent oil transmission control method not only improves the detection efficiency but also enhances the adaptability and automation of the test bench, meeting the diverse needs of different detection scenarios.

[0040] The working principle of this utility model is as follows: Before the test begins, the user installs the mating seat of the component to be tested on the mating seats of different specifications according to the size and specifications of the mating seat. For the mating seats 4 that are not used temporarily, the sealing cap is tightened to prevent oil leakage. The oil source is connected to the injection pump body 5. The injection pump body 5 serves as the power core, pressurizing the oil and delivering it to the internal oil circuit. The pressurized oil is transmitted to the upper mating plate 3 through the output end of the injection pump body 5, and then distributed from the upper mating plate 3 to each mating seat 4, so that the oil can enter all the installed mating seats at the same time. During the pressure test, the test bench applies the same and standard test pressure to each mating seat by precisely controlling the pressure parameters of the injection pump body 5. The tester can simultaneously observe the pressure changes of multiple mating seats and quickly judge the sealing performance of each mating seat based on indicators such as the pressure drop rate and the holding time.

[0041] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A test bench for sealing the fuel injection pump outlet valve assembly seat, comprising a test chamber (1), characterized in that, Also includes: The oil injection pump body (5) is fixed inside the test chamber (1). The oil injection pump body (5) is used to connect to the oil source, thereby realizing the oil supply action of the mating part seat. The upper docking plate (3) is fixed on the upper part of the test chamber (1) and the upper docking plate (3) is connected to the output end of the fuel injection pump body (5); The docking seat (4) is provided in multiple ways. The multiple docking seats (4) are used to connect the mating seats of different sizes for sealing purposes, and the idle mating seats are screwed with sealing caps.

2. The fuel injection pump outlet valve assembly sealing test bench according to claim 1, characterized in that: The test chamber (1) is fixedly installed with a support base (6), and the fuel injection pump body (5) is fixedly installed on the upper part of the support base (6).

3. The fuel injection pump outlet valve assembly sealing test bench according to claim 1, characterized in that: The test chamber (1) is provided with a limiting component (2) on the upper part. The limiting component (2) includes an upper limit plate (201). The upper limit plate (201) is fixed to the upper part of the test chamber (1) by a screw and is screwed to a lower limit plate (202) located below the upper limit plate (201).

4. The fuel injection pump outlet valve assembly sealing test bench according to claim 3, characterized in that: A screw tube (203) is provided between the upper limit plate (201) and the lower limit plate (202), the screw tube (203) is used to be screwed to the screw rod, and a clamping cavity is formed between the upper limit plate (201) and the lower limit plate (202).

5. The fuel injection pump outlet valve assembly sealing test bench according to claim 4, characterized in that: The upper docking plate (3) is fitted and inserted into the lower part of the upper docking plate (3). The upper docking plate (3) and the lower docking plate (11) are located inside the clamping cavity. The lower part of the lower docking plate (11) is fixedly connected to several input seats (12). The input seats (12) are connected to the output end of the fuel injection pump body (5) through the transmission pipe.

6. The fuel injection pump outlet valve assembly sealing test bench according to claim 5, characterized in that: A rotating cavity is formed between the upper docking plate (3) and the lower docking plate (11). A disk (13) is rotatably installed inside the rotating cavity of the upper docking plate (3) and the lower docking plate (11). An annular channel (15) communicating with several input seats (12) is opened at the lower part of the disk (13). The disk (13) is also provided with a through hole (14). When the disk (13) rotates, the through hole (14) is movably aligned and communicated with several docking seats (4) to perform the oil transfer action of the designated docking seats (4).

7. A test bench for sealing the fuel injection pump outlet valve assembly seat according to claim 6, characterized in that: The upper docking plate (3) and the lower docking plate (11) are rotatably mounted with a gear ring (9) on their exterior. A motor (7) is fixedly mounted on the upper part of the test chamber (1). A gear (8) is fixedly connected to the output end of the motor (7). The gear (8) meshes with the gear ring (9). A magnetic ring (10) is fixedly connected inside the gear ring (9). The magnetic ring (10) is magnetically connected to the disk (13). The disk (13) is driven by the rotation of the magnetic ring (10) to perform a self-rotation action, thereby realizing different oil transfer actions of the docking seat (4).

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