Inner cavity cleaning device of high-pressure oil rail assembly

Abstract

The utility model provides an inner cavity cleaning device of a high-pressure oil rail assembly, and relates to the technical field of high-pressure oil rail assemblies. The cleaning assembly is located on the base, the cleaning assembly is used for containing the high-pressure oil rail assembly, the cleaning assembly is provided with a cleaning channel, the cleaning channel communicates with an inner cavity of the high-pressure oil rail assembly, and the cleaning channel is communicated with a cleaning medium to clean the inner cavity; the first end of the clamping assembly is connected to the base, and the second end of the clamping assembly is movably arranged in the height direction of the base so as to clamp the high-pressure oil rail assembly to be in a clean state. The high-pressure oil rail assembly can be clamped through the clamping assembly, damage to the high-pressure oil rail assembly in the cleaning process is reduced, cleaning circulation of an inner cavity of the high-pressure oil rail assembly is completed under the action of fluid pressure difference by introducing a cleaning medium into the cleaning channel, and therefore the device can further shorten the operation time and reduce the operation intensity.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure oil rail assemblies, in particular to an inner cavity cleaning device of a high-pressure oil rail assembly. Background Art

[0002] The high-pressure fuel rail assembly is a key component of the high-pressure fuel control system, which is used for fuel storage, distribution and injection. In the performance test, strength test, and aging verification of the high-pressure fuel rail assembly, the cleanliness of the inner cavity of the assembly needs to be evaluated and cleaned and reused after the evaluation. Regarding the cleaning operations in the above links in the industry, a manual air gun is generally used to blow the oil inlet and return holes clean or drain them naturally. This method has strong human intervention, high work intensity, and the cleanliness evaluation does not meet the requirements; the operator is very likely to inhale the diffused oily mist during the operation, which is not conducive to occupational health. In the batch production process, there are quality risks such as bumps and falls of exposed parts, which require special personnel to operate, and it is difficult to meet batch production needs. Utility Model Content

[0003] The main purpose of the utility model is to provide an inner cavity cleaning device for a high-pressure fuel rail assembly, so as to solve the problem that the prior art uses a manual air gun for cleaning, resulting in high work intensity and the high-pressure fuel rail assembly is easily damaged.

[0004] In order to achieve the above-mentioned purpose, a device for cleaning the inner cavity of a high-pressure fuel rail assembly is provided. The device for cleaning the inner cavity of a high-pressure fuel rail assembly comprises: a base; a cleaning component, the cleaning component is located on the base, the cleaning component is used to place the high-pressure fuel rail assembly, the cleaning component has a cleaning channel, the cleaning channel is arranged to communicate with the inner cavity of the high-pressure fuel rail assembly, and a cleaning medium is passed through the cleaning channel to clean the inner cavity; a clamping component, the first end of the clamping component is connected to the base, and the second end of the clamping component is movably arranged along the height direction of the base to clamp the high-pressure fuel rail assembly in a cleaning state.

[0005] Furthermore, the cleaning component includes: a first shell, the first shell is arranged on the base, a cleaning channel is arranged in the first shell, the cleaning channel includes multiple first channels and multiple second channels, the first channels are arranged to be connected with the second channels, when the high-pressure oil rail assembly is in a cleaning state, the inner cavity is connected with the multiple first channels, and the cleaning medium used to clean the inner cavity flows in or out through the second channel.

[0006] Furthermore, multiple first channels are arranged on the surface of the first shell, and the multiple first channels are arranged at intervals along the length direction of the first shell. Multiple protruding tubes are arranged on the side of the high-pressure oil rail assembly facing the first shell, and the multiple protruding tubes are arranged in communication with the inner cavity. The multiple first channels include: multiple first inlet channels, and the multiple first inlet channels are used for the protruding tubes to pass through; multiple first outlet channels, and the multiple first outlet channels are used for the protruding tubes to pass through, and each first inlet channel is arranged at intervals from each first outlet channel; wherein, the multiple first inlet channels and the multiple first outlet channels are arranged in communication with the second channel.

[0007] Furthermore, multiple second channels are arranged on the side wall of the first shell, and the multiple second channels include: multiple second inlet channels, each second inlet channel is arranged to communicate with each first inlet channel, and each second inlet channel is used to communicate with a cleaning medium pipeline; multiple second outlet channels, each second outlet channel is arranged to communicate with each first outlet channel, and each second outlet channel is used to communicate with a recovery pipeline.

[0008] Furthermore, a first annular groove is provided on the surface of the first housing along the circumference of each first outlet channel, and a first sealing member is provided in the first annular groove. When the high-pressure oil rail assembly is in a clean state, the first sealing member abuts against the step surface of the protruding tube.

[0009] Furthermore, a second sealing member is provided at the bottom of each first inlet channel, and an inner diameter of the second sealing member is smaller than an inner diameter of the first sealing member.

[0010] Furthermore, a return oil pipe is provided on the side of the high-pressure oil rail assembly facing the first shell, and a pneumatic nozzle is provided in the return oil pipe. The first shell includes: a third channel, the third channel is arranged on the surface of the first shell, the third channel is used for the return oil pipe to pass through, the pneumatic nozzle is used to blow out the residual oil inside the third channel, a second annular groove is provided in the third channel, and a third sealing member is provided in the second annular groove.

[0011] Furthermore, the first shell also includes: a fourth channel, which is arranged on the side of the first shell, the fourth channel is used to communicate with the cleaning medium pipeline, and the fourth channel is arranged to communicate with the third channel; a fifth channel, which is arranged on the side of the first shell, the fifth channel is used to communicate with the recovery pipeline, and the fifth channel is arranged to communicate with the third channel.

[0012] Furthermore, a sixth channel is provided on the high-pressure oil rail assembly, and the sixth channel is arranged to communicate with the inner cavity. The sixth channel is used to communicate with the cleaning medium pipeline. The cleaning component includes: a second shell, the second shell is arranged on the base, the first surface of the second shell is provided with a plurality of first channels, and the first side wall of the second shell is provided with a plurality of first channels. When the high-pressure oil rail assembly is in a cleaning state, the inner cavity is arranged to communicate with the plurality of first channels, and a third annular groove is provided along the outer periphery of the first channel, and the third annular groove is used to install a fourth seal.

[0013] Furthermore, the second side wall of the second shell is also provided with a plurality of second channels, the plurality of second channels are arranged to communicate with the plurality of first channels, and the second channels are used to communicate with the recovery pipeline.

[0014] Furthermore, the clamping assembly includes: a support block, one end of which is connected to the base; and a cylinder assembly, which is movably arranged on the support block along the height direction of the base.

[0015] Furthermore, a groove is provided on one side of the support block, and the groove is arranged along the height direction of the support block. The cylinder assembly includes: a cylinder, which is movably arranged in the groove; a pressure block, which is connected to the gas rod of the cylinder, and the cylinder drives the pressure block to be movably arranged to clamp or release the high-pressure oil rail assembly.

[0016] By applying the technical solution of the utility model, a cleaning component and a clamping component are arranged on a base, and the second end of the clamping component is movably arranged along the height direction of the base, so that a clamping space for clamping the high-pressure oil rail assembly is formed between the cleaning component and the second end of the clamping component, and the clamping component can clamp the high-pressure oil rail assembly, thereby reducing damage to the high-pressure oil rail assembly during the cleaning process. The high-pressure oil rail assembly is arranged on the cleaning component, so that the inner cavity of the high-pressure oil rail assembly is connected to the cleaning channel of the cleaning component, and by introducing a cleaning medium into the cleaning channel, under the action of the fluid pressure difference, the inner cavity of the high-pressure oil rail assembly completes a cleaning cycle, so that the device can further compress the operation time and reduce the operation intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the exploded structure of the first embodiment of the inner cavity cleaning device of the high-pressure fuel rail assembly according to the utility model is shown;

[0019] Figure 2 A cross-sectional structural schematic diagram of a first embodiment of an inner cavity cleaning device of a high-pressure fuel rail assembly according to the utility model is shown;

[0020] Figure 3 Shows Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 4 Shows Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0022] Figure 5A schematic diagram of the exploded structure of the second embodiment of the inner cavity cleaning device of the high-pressure fuel rail assembly according to the utility model is shown;

[0023] Figure 6 A first cross-sectional structural schematic diagram of a second embodiment of the inner cavity cleaning device of a high-pressure fuel rail assembly according to the utility model is shown;

[0024] Figure 7 A second cross-sectional structural schematic diagram of a second embodiment of the inner cavity cleaning device of a high-pressure fuel rail assembly according to the utility model is shown.

[0025] The above drawings include the following reference numerals:

[0026] 1. Base;

[0027] 2. Clean components;

[0028] 21. Clean the passage;

[0029] 211, first channel; 2111, first inlet channel; 2112, first outlet channel;

[0030] 212, second channel; 2121, second inlet channel; 2122, second outlet channel;

[0031] 213, Third Channel;

[0032] 214, Fourth Channel;

[0033] 215, Fifth Channel;

[0034] 22. A first shell;

[0035] 23. Second shell;

[0036] 3. Clamping assembly;

[0037] 31. Support block;

[0038] 32. Cylinder assembly; 321. Cylinder; 322. Press block;

[0039] 4. High-pressure fuel rail assembly;

[0040] 41. Inner cavity;

[0041] 42. Protruding tube;

[0042] 43. Oil return pipe; 431. Pneumatic nozzle;

[0043] 44. Channel 6;

[0044] 51. First sealing member; 52. Second sealing member; 53. Third sealing member. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0048] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0049] It should be noted that the cleaning medium in the present application can be compressed air, oil or other gaseous or liquid working fluids, which are used to clean, rust-proof or perform other surface treatments on the inner surface of the oil rail.

[0050] Combination Figures 1 to 7 As shown, according to a specific embodiment of the utility model, a device for cleaning the inner cavity of a high-pressure oil rail assembly is provided.

[0051] Specifically, Figure 1 , Figure 2As shown, the inner cavity cleaning device of the high-pressure oil rail assembly includes: a base 1; a cleaning component 2, the cleaning component 2 is located on the base 1, the cleaning component 2 is used to place the high-pressure oil rail assembly 4, the cleaning component 2 has a cleaning channel 21, the cleaning channel 21 is arranged to communicate with the inner cavity 41 of the high-pressure oil rail assembly 4, and the cleaning medium passes through the cleaning channel 21 to clean the inner cavity 41; a clamping component 3, the first end of the clamping component 3 is connected to the base 1, and the second end of the clamping component 3 is movably arranged along the height direction of the base 1 to clamp the high-pressure oil rail assembly 4 in a cleaning state.

[0052] In this embodiment, a cleaning component 2 and a clamping component 3 are arranged on the base 1, and the second end of the clamping component 3 is movably arranged along the height direction of the base 1, so that a clamping space for clamping the high-pressure oil rail assembly 4 is formed between the cleaning component 2 and the second end of the clamping component 3, and the clamping component 3 can clamp the high-pressure oil rail assembly 4, thereby reducing the damage to the high-pressure oil rail assembly 4 during the cleaning process. The high-pressure oil rail assembly 4 is arranged on the cleaning component 2, so that the inner cavity 41 of the high-pressure oil rail assembly 4 is connected to the cleaning channel 21 of the cleaning component 2. By introducing a cleaning medium into the cleaning channel 21, under the action of the fluid pressure difference, the inner cavity 41 of the high-pressure oil rail assembly 4 completes the cleaning cycle, so that the device can further compress the operation time and reduce the operation intensity.

[0053] like Figure 3 As shown, the cleaning component 2 includes: a first shell 22, the first shell 22 is arranged on the base 1, a cleaning channel 21 is arranged in the first shell 22, the cleaning channel 21 includes a plurality of first channels 211 and a plurality of second channels 212, the first channels 211 are arranged to be connected with the second channels 212, when the high-pressure oil rail assembly 4 is in a cleaning state, the inner cavity 41 is connected with the plurality of first channels 211, and the cleaning medium for cleaning the inner cavity 41 flows in or out through the second channel 212.

[0054] Specifically, the process of cleaning the high-pressure fuel rail assembly 4 is divided into two steps:

[0055] First step: the cleaning medium flows in through the second channel 212 and then flows into the inner cavity 41 from the first channel 211 , and cleaning is achieved in the process of the cleaning medium flowing through the inner cavity 41 .

[0056] The first step: the cleaning medium drives the impurities in the inner cavity 41 to flow out from the first channel 211 and then out from the second channel 212. The second channel 212 is externally connected to a recovery pipeline to recover the impurities.

[0057] This process uses fluid pressure difference to perform a cleaning cycle inside the high-pressure rail assembly, thereby improving cleaning efficiency.

[0058] like Figure 3As shown, a plurality of first channels 211 are arranged on the surface of the first shell 22, and the plurality of first channels 211 are arranged at intervals along the length direction of the first shell 22. A plurality of protruding tubes 42 are arranged on the side of the high-pressure oil rail assembly 4 facing the first shell 22, and the plurality of protruding tubes 42 are arranged in communication with the inner cavity 41. The plurality of first channels 211 include: a plurality of first inlet channels 2111, and the plurality of first inlet channels 2111 are used for the protruding tubes 42 to pass through; a plurality of first outlet channels 2112, and the plurality of first outlet channels 2112 are used for the protruding tubes 42 to pass through, and each first inlet channel 2111 is arranged at intervals from each first outlet channel 2112; wherein, the plurality of first inlet channels 2111 and the plurality of first outlet channels 2112 are arranged in communication with the second channel 212.

[0059] Specifically, in the first step of cleaning the high-pressure oil rail assembly 4, the cleaning medium flows in from the first inlet channel 2111 and enters the inner cavity 41 for cleaning, and in the second step of cleaning the high-pressure oil rail assembly 4, the cleaning medium drives the impurities in the inner cavity 41 to flow out from the first outlet channel 2112. This arrangement is simple in structure, time-saving and efficient.

[0060] Furthermore, multiple second channels 212 are arranged on the side wall of the first shell 22, and the multiple second channels 212 include: multiple second inlet channels 2121, each second inlet channel 2121 is arranged to be connected to each first inlet channel 2111, and each second inlet channel 2121 is used to be connected to a cleaning medium pipeline; multiple second outlet channels 2122, each second outlet channel 2122 is arranged to be connected to each first outlet channel 2112, and each second outlet channel 2122 is used to be connected to a recovery pipeline.

[0061] Specifically, in the first step of cleaning the high-pressure oil rail assembly 4, the cleaning medium flows in from the second inlet channel 2121, passes through the first inlet channel 2111, and enters the inner cavity 41 for cleaning. In the second step of cleaning the high-pressure oil rail assembly 4, the cleaning medium drives the impurities in the inner cavity 41 to flow out from the first outlet channel 2112, and is recovered into the recovery pipe through the second outlet channel 2122, thus completing the cleaning cycle. This arrangement avoids polluting the environment and preventing damage to the human body.

[0062] In this embodiment, four second inlet channels 2121 and four second outlet channels 2122 are provided to form four circulation flow paths. During the cleaning process, the four second inlet channels 2121 can be connected to the cleaning medium pipeline at the same time, and the four second outlet channels 2122 can be connected to the recovery pipeline at the same time to form four circulation flow paths. Alternatively, some of the second inlet channels 2121 can be connected to the cleaning medium pipeline, or some of the second outlet channels 2122 can be connected to the recovery pipeline to form some circulation flow paths. Cross circulation is also possible.

[0063] In other embodiments, the number of the first channel 211 and the second channel 212 on the first shell 22 may also be two, three, five, etc.

[0064] Furthermore, a first annular groove is provided on the surface of the first housing 22 along the circumference of each first outlet channel 2112, and a first sealing member 51 is provided in the first annular groove. When the high-pressure oil rail assembly 4 is in a clean state, the first sealing member 51 abuts against the step surface of the protruding tube 42. This arrangement enables the first sealing member 51 to achieve a sealing effect and prevent the cleaning medium from leaking when the cleaning medium drives the impurities in the inner cavity 41 to flow out of the first outlet channel 2112. In this embodiment, the first sealing member 51 is a sealing ring. In other embodiments, the form of the first sealing member is not limited thereto.

[0065] Furthermore, a second seal 52 is provided at the bottom of each first inlet channel 2111, and the inner diameter of the second seal 52 is smaller than the inner diameter of the first seal 51. In this way, when the cleaning medium flows from the first inlet channel 2111 into the inner cavity 41, the second seal 52 can achieve a sealing effect to prevent leakage of the cleaning medium.

[0066] like Figure 4 As shown, the high-pressure oil rail assembly 4 is provided with an oil return pipe 43 on the side facing the first housing 22, and a pneumatic nozzle 431 is provided in the oil return pipe 43. The first housing 22 includes: a third channel 213, which is provided on the surface of the first housing 22, and is used for the oil return pipe 43 to pass through, and the pneumatic nozzle 431 is used to blow out the residual oil inside the third channel 213, and a second annular groove is provided in the third channel 213, and a third sealing member 53 is provided in the second annular groove. Further, the first housing 22 also includes: a fourth channel 214, which is provided on the side of the first housing 22, and is used to communicate with the cleaning medium pipeline, and the fourth channel 214 is provided to communicate with the third channel 213; a fifth channel 215, which is provided on the side of the first housing 22, and is used to communicate with the recovery pipeline, and the fifth channel 215 is provided to communicate with the third channel 213.

[0067] Specifically, in this embodiment, the oil return pipe 43 is disposed at one end of the high-pressure oil rail assembly 4, and the oil return pipe 43 is not connected to the inner cavity 41. This arrangement allows the residual oil to be recovered through the third channel 213 and the fifth channel 215.

[0068] like Figure 5 , Figure 6 , Figure 7As shown, in another embodiment of the present application, a sixth channel 44 is provided on the high-pressure oil rail assembly 4, and the sixth channel 44 is arranged to communicate with the inner cavity 41, and the sixth channel 44 is used to communicate with the cleaning medium pipeline. The cleaning component 2 includes: a second shell 23, the second shell 23 is arranged on the base 1, and the first surface of the second shell 23 is provided with a plurality of first channels 211, and the first side wall of the second shell 23 is provided with a plurality of first channels 211. When the high-pressure oil rail assembly 4 is in a cleaning state, the inner cavity 41 is arranged to communicate with the plurality of first channels 211, and a third annular groove is provided along the outer periphery of the first channel 211, and the third annular groove is used to install a fourth sealing member.

[0069] Furthermore, a second side wall of the second shell 23 is further provided with a plurality of second channels 212 , and the plurality of second channels 212 are arranged to communicate with the plurality of first channels 211 , and the second channels 212 are used to communicate with the recovery pipeline.

[0070] Specifically, the step of cleaning the inner cavity 41 of the high-pressure oil rail assembly 4 includes: a cleaning medium enters the inner cavity 41 through the sixth channel 44 on the high-pressure oil rail assembly 4, and the cleaning medium drives the impurities in the inner cavity 41 to flow into the first channel 211 on the second shell 23, and then flows out from the second channel 212 to the recovery pipe, completing the cleaning cycle.

[0071] In this embodiment, second channels 212 are provided on two opposite side walls of the second shell 23. One second channel 212 is connected to a part of the first channel 211, and the other second channel 212 is connected to another part of the first channel 211. This arrangement improves cleaning efficiency.

[0072] like Figure 1 , Figure 2 As shown, the clamping assembly 3 includes: a support block 31, one end of which is connected to the base 1; a cylinder assembly 32, which is movably arranged on the support block 31 along the height direction of the base 1. Specifically, a groove is provided on one side of the support block 31, and the groove is arranged along the height direction of the support block 31. The cylinder assembly 32 includes: a cylinder 321, which is movably arranged in the groove; a pressing block 322, which is connected to the gas rod of the cylinder 321, and the cylinder 321 drives the pressing block 322 to be movably arranged to clamp or release the high-pressure oil rail assembly 4.

[0073] Specifically, the cylinder 321 drives the pressing block 322 to press down the high-pressure oil rail assembly 4, so that the high-pressure oil rail assembly 4 is sealed with the cleaning component 2, and the residual oil in the inner cavity is blown out through the flow channel circulation to achieve the cleaning function. The cylinder 321 drives the pressing block 322 to lift up, which is convenient for replacing the high-pressure oil rail assembly 4. At the same time, this arrangement ensures the structural stability of the high-pressure oil rail assembly 4 in the clean state, and can also be applied to different high-pressure oil rail assemblies, thereby improving the applicability of the device.

[0074] In another embodiment of the present application, taking the performance test of high-pressure oil rail assemblies in batches as an example, the device can be embedded in the test workbench, and compressed air is selected as the external cleaning fluid, and the workbench oil return system is selected as the leaked fluid recovery device. The compressed air intake path, the cylinder intake path and the workbench safety door cylinder are connected in parallel, so that the compressed air on and off of the device and the on and off response of the workbench safety door are consistent, and the safety door cylinder intake safety door is closed when the test is started.

[0075] The cleaning component 2 and the cylinder 321 of the device are simultaneously supplied with external compressed air, and the pressing block 322 presses down the high-pressure oil rail assembly 4 to ensure that the high-pressure oil rail assembly 4 is sealed with the cleaning component 2, and the residual oil in the inner cavity is blown out through the flow channel circulation to achieve the cleaning function; after the test is completed, the cylinder 321 is cut off, the safety door is opened, the compressed air of the device is disconnected, the cleaning component 2 and the cylinder 321 are cut off synchronously, and the pressing block 322 is lifted, which is convenient for replacing the high-pressure oil rail assembly 4. The oil return circuit of the device is connected in parallel with the oil return pipe of the workbench. With the gas on and off, the residual oil is recovered to the workbench oil tank through the oil return pipe and the oil collection channel for filtration and reuse, forming a complete cleaning cycle function. In the actual batch performance test operation, the cycle time of testing a workpiece can cover the cycle time of cleaning the previous tested workpiece, and there is no oil residue after cleaning; at the same time, one dedicated person is reduced, and the process cycle is compressed by more than 2 minutes / piece; no oily aerosol is formed. The use of this device forms a one-post dual-operation mode, effectively combining the inner cavity cleaning operation with the performance testing operation, thereby improving quality, reducing labor input, and improving work efficiency.

[0076] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0077] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present utility model.

[0078] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0079] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cavity cleaning device for a high-pressure fuel rail assembly, characterized in that: include: Base (1); A cleaning component (2), the cleaning component (2) being located on the base (1), the cleaning component (2) being used to place the high-pressure oil rail assembly (4), the cleaning component (2) having a cleaning channel (21), the cleaning channel (21) being arranged in communication with an inner cavity (41) of the high-pressure oil rail assembly (4), and the cleaning channel (21) being passed with a cleaning medium for cleaning the inner cavity (41); A clamping assembly (3), wherein a first end of the clamping assembly (3) is connected to the base (1), and a second end of the clamping assembly (3) is movably arranged along the height direction of the base (1) to clamp the high-pressure oil rail assembly (4) in a clean state.

2. The inner cavity cleaning device of the high-pressure fuel rail assembly according to claim 1, characterized in that: The cleaning component (2) comprises: A first shell (22), wherein the first shell (22) is arranged on the base (1), wherein the cleaning channel (21) is arranged in the first shell (22), wherein the cleaning channel (21) comprises a plurality of first channels (211) and a plurality of second channels (212), wherein the first channels (211) are arranged to be in communication with the second channels (212), and when the high-pressure oil rail assembly (4) is in the cleaning state, the inner cavity (41) is in communication with the plurality of first channels (211), and the cleaning medium for cleaning the inner cavity (41) flows in or out through the second channels (212).

3. The inner cavity cleaning device of the high-pressure fuel rail assembly according to claim 2, characterized in that: A plurality of the first channels (211) are arranged on the surface of the first shell (22), and the plurality of the first channels (211) are arranged at intervals along the length direction of the first shell (22). A plurality of protruding tubes (42) are arranged on a side of the high-pressure oil rail assembly (4) facing the first shell (22), and the plurality of the protruding tubes (42) are arranged in communication with the inner cavity (41). The plurality of the first channels (211) include: a plurality of first inlet channels (2111), wherein the plurality of first inlet channels (2111) are used for the protruding tubes (42) to pass through; a plurality of first outlet channels (2112), wherein the plurality of first outlet channels (2112) are used for the protruding tubes (42) to pass through, and each of the first inlet channels (2111) and each of the first outlet channels (2112) are arranged at intervals; Wherein, a plurality of the first inlet channels (2111), a plurality of the first outlet channels (2112) are arranged to be in communication with the second channel (212).

4. The inner cavity cleaning device of the high-pressure fuel rail assembly according to claim 3, characterized in that: The plurality of second channels (212) are arranged on the side wall of the first shell (22), and the plurality of second channels (212) include: A plurality of second inlet channels (2121), each of the second inlet channels (2121) being arranged in communication with each of the first inlet channels (2111), and each of the second inlet channels (2121) being used to communicate with a cleaning medium pipeline; A plurality of second outlet channels (2122), each of the second outlet channels (2122) being arranged in communication with each of the first outlet channels (2112), and each of the second outlet channels (2122) being used to communicate with a recovery pipeline.

5. The inner cavity cleaning device of the high-pressure fuel rail assembly according to claim 3, characterized in that: A first annular groove is provided on the surface of the first housing (22) along the circumference of each first outlet channel (2112), and a first sealing member (51) is provided in the first annular groove. When the high-pressure oil rail assembly (4) is in the clean state, the first sealing member (51) abuts against the step surface of the protruding tube (42).

6. The inner cavity cleaning device of the high-pressure fuel rail assembly according to claim 5, characterized in that: A second sealing member (52) is provided at the bottom of each of the first inlet channels (2111), and the inner diameter of the second sealing member (52) is smaller than the inner diameter of the first sealing member (51).

7. The inner cavity cleaning device of the high-pressure fuel rail assembly according to claim 3, characterized in that: The high-pressure oil rail assembly (4) is provided with an oil return pipe (43) on a side facing the first housing (22), and a pneumatic nozzle (431) is provided in the oil return pipe (43). The first housing (22) comprises: A third channel (213), wherein the third channel (213) is arranged on the surface of the first shell (22), the third channel (213) is used for the oil return pipe (43) to pass through, the pneumatic nozzle (431) is used for blowing out residual oil inside the third channel (213), a second annular groove is arranged in the third channel (213), and a third sealing member (53) is arranged in the second annular groove.

8. The inner cavity cleaning device of the high-pressure fuel rail assembly according to claim 7, characterized in that: The first housing (22) further comprises: a fourth channel (214), the fourth channel (214) being arranged on a side of the first shell (22), the fourth channel (214) being used to communicate with a cleaning medium pipeline, and the fourth channel (214) being arranged to communicate with the third channel (213); A fifth channel (215), the fifth channel (215) is arranged on the side of the first shell (22), the fifth channel (215) is used to communicate with the recovery pipeline, and the fifth channel (215) is arranged to communicate with the third channel (213).

9. The inner cavity cleaning device of the high-pressure fuel rail assembly according to claim 2, characterized in that: The high-pressure oil rail assembly (4) is provided with a sixth channel (44), the sixth channel (44) is arranged to communicate with the inner cavity (41), and the sixth channel (44) is used to communicate with the cleaning medium pipeline. The cleaning component (2) includes: A second shell (23), wherein the second shell (23) is arranged on the base (1), a first surface of the second shell (23) is provided with a plurality of the first channels (211), and a first side wall of the second shell (23) is provided with a plurality of the first channels (211), when the high-pressure oil rail assembly (4) is in the cleaning state, the inner cavity (41) is arranged to communicate with the plurality of the first channels (211), a third annular groove is provided along the outer periphery of the first channel (211), and the third annular groove is used for mounting a fourth sealing member.

10. The inner cavity cleaning device of the high-pressure fuel rail assembly according to claim 9, characterized in that: The second side wall of the second shell (23) is further provided with a plurality of second channels (212), the plurality of second channels (212) being arranged in communication with the plurality of first channels (211), and the second channels (212) being used to communicate with a recovery pipeline.

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