Return oil collecting device for diesel engine test

Abstract

The invention relates to the technical field of return oil collection, in particular to a return oil collection device for a diesel engine test. Comprising an engine, a filter and an oil return pipeline connecting the filter and the engine, and further comprises a collecting unit connected into the oil return pipeline, the collecting unit comprises an oil conveying pipe in butt joint with the oil return pipeline, an oil collecting shell arranged on one side of the oil conveying pipe and a negative pressure pump arranged on one side of the oil collecting shell, and the oil conveying pipe is connected into the oil return pipeline; on the basis of the prior art, the structure of the collecting device is improved, and the collecting unit is additionally arranged to collect oil, so that when the filter needs to be replaced, the oil return pipeline can be replaced conveniently, and the oil return pipeline can be replaced conveniently. Diesel oil in an oil return pipeline can be rapidly collected, and the filter replacement efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of return oil collection, in particular to a return oil collection device for diesel engine testing. Background Art

[0002] With the development of engine technology, more and more processes are being applied to engines. In bridge and tunnel projects, due to the harsh working environment, the engine needs to be tested to discover problems with the engine's performance and adaptability to the field environment. For the test equipment used in the past, the diesel in the engine is extracted through the return oil pipeline and processed by the filter to improve the quality of the diesel. However, with the use of the filter, the filter element inside the filter will become blocked, which requires the filter to be replaced. However, the filter is mostly connected by bolts, which is inconvenient during installation and removal. When the filter is removed, the diesel remaining in the filter and the pipeline will flow out from the interface, which will not only pollute the surrounding environment, but also cause waste. Summary of the invention

[0003] The purpose of the present invention is to provide an oil return collection device for diesel engine testing, so as to solve the problem in the prior art that the filter replacement is complicated due to the residual diesel discharge in the oil pipeline during the engine test.

[0004] To achieve the above-mentioned purpose, the present invention provides a return oil collection device for diesel engine testing, comprising an engine, a filter, and an oil return pipeline connecting the filter and the engine, and also comprising a collection unit connected to the oil return pipeline, the collection unit comprising an oil pipeline connected to the oil return pipeline, an oil collecting shell arranged on one side of the oil pipeline, and a negative pressure pump arranged on one side of the oil collecting shell, the oil pipeline is connected to the return oil pipeline, the oil collecting shell is connected to the oil return pipeline through the oil pipeline, and a valve body is also provided at the connection between the oil collecting shell and the oil pipeline, and the negative pressure pump is connected to the upper part of the oil collecting shell through an external pipeline.

[0005] When conducting a performance test of a diesel engine, the engine is used to connect the filter, so as to achieve a clearer understanding of the engine's performance and avoid the operation being affected by diesel quality problems. Since it belongs to the prior art, it has been clearly recorded in the prior art CN 114199580 A. The technical solution of the present application is to add the collection unit in the return oil pipeline on the basis of the prior art, connect the oil delivery pipe with the return oil pipeline, and set the oil collecting shell under the oil delivery pipe. When the filter needs to be replaced, the negative pressure pump can be directly started after the engine is turned off. After negative pressure is generated in the oil collecting shell, the diesel in the return oil pipeline can enter the oil collecting shell relatively quickly under the action of negative pressure and gravity, thereby avoiding diesel leakage and pollution of the surrounding environment during the process of replacing the filter.

[0006] Among them, a accommodating chamber for storing diesel is provided in the oil collecting shell, and the accommodating chamber is an inverted conical column structure that is wide at the top and narrow at the bottom, and the accommodating chamber is also provided with a negative pressure interface connected to the negative pressure pump and an oil inlet interface connected to the oil pipe, and the negative pressure interface and the oil inlet interface are arranged opposite to each other in the upper part of the accommodating chamber.

[0007] The accommodating chamber is an inverted conical column structure that is wide at the top and narrow at the bottom. After the oil enters the accommodating chamber through the oil inlet interface, it can gather at the bottom of the accommodating chamber under the action of gravity, and the negative pressure interface is used to connect with the negative pressure pump to form a negative pressure in the accommodating chamber to attract diesel into the accommodating chamber, so as to improve the efficiency of diesel entering the accommodating chamber.

[0008] Among them, the oil collecting shell is also provided with an oil unloading valve, which is arranged at the bottom of the accommodating cavity. The oil unloading valve includes an oil cylinder docked with the accommodating cavity and a closed shell sleeved on the outside of the oil cylinder. An oil outlet is provided at the bottom of the oil cylinder, and the closed shell is rotatably connected to the oil cylinder.

[0009] The oil unloading valve is arranged at the bottom of the oil collecting shell. After the oil collecting shell completes the diesel collection work in the oil return pipeline, the oil unloading valve is used to discharge the collected diesel to the outside. The oil cylinder is connected to the accommodating chamber, and the closed shell is used to seal the oil cylinder. After the diesel in the oil return pipeline is collected, the negative pressure pump is closed and the closed shell is rotated so that the oil outlet can discharge the diesel to the outside through the closed shell.

[0010] Among them, the closed outer shell includes a rotating sleeve rotatably connected to the oil cylinder and an outer shell body with a through hole at the bottom. The rotating sleeve is arranged on the upper inner side of the outer shell body. The outer shell body is rotatably connected to the oil cylinder through the rotating sleeve. The through hole is arranged on one side of the bottom of the outer shell body, so as to rotate the closed outer shell to align the through hole with the oil outlet.

[0011] The rotating sleeve is arranged on the upper side of the outer shell, and the outer shell realizes relative rotation with the oil cylinder through the rotating sleeve, so that the oil outlet can be aligned with the through hole, and the diesel in the oil cylinder can be discharged to the outside through the through hole.

[0012] A sealing gasket is provided on the inner wall of the through hole, and the sealing gasket extends along the inner wall of the through hole to form a step slightly higher than the bottom of the outer shell above the bottom of the outer shell, and the step is used to limit the overflow direction of the oil when the through hole is aligned with the oil outlet.

[0013] The sealing gasket is arranged on the inner side wall of the through hole. The sealing gasket is arranged so that when the through hole is aligned with the oil outlet, the sealing gasket can form a channel for oil discharge in the gap between the outer shell and the oil cylinder.

[0014] Wherein, the collection unit is also provided with an oil collecting tank, and the oil collecting tank is arranged at the lower side of the oil unloading valve.

[0015] The oil collecting tank is arranged at the lower side of the oil unloading valve, that is, the oil collecting tank is used to connect with the oil discharged from the through hole.

[0016] The invention provides an oil return collection device for diesel engine testing. On the basis of the prior art, the structure of the collection device is improved, and a collection unit is added to collect oil, so that when the filter needs to be replaced, the diesel in the oil return pipeline can be quickly collected, effectively improving the efficiency of filter replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The present invention is a schematic structural diagram of a return oil collection device for diesel engine testing.

[0019] Figure 2The present invention is a schematic structural diagram of a collection unit of a return oil collection device for diesel engine testing.

[0020] Figure 3 The present invention is a schematic cross-sectional structural diagram of a collection unit of a return oil collection device for diesel engine testing provided by the present invention.

[0021] Figure 4 The present invention is a schematic diagram of a partially enlarged cross-sectional structure of a collection unit of a return oil collection device for diesel engine testing provided by the present invention.

[0022] Figure 5 The present invention is a schematic cross-sectional structural diagram of an outer shell of a collection unit of an oil return collection device for diesel engine testing provided by the present invention.

[0023] 101-engine, 102-filter, 103-oil return line, 104-oil delivery pipe, 105-oil collecting housing, 106-negative pressure pump, 107-valve body, 108-accommodating chamber, 109-negative pressure interface, 110-oil inlet interface, 111-oil unloading valve, 112-oil cylinder, 113-enclosed housing, 114-oil outlet, 115-rotating sleeve, 116-outer housing, 117-through hole, 118-sealing gasket, 119-step, 120-oil collecting tank. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0026] See also Figures 1 to 5 ,

[0027] Figure 1 It is a structural schematic diagram of a return oil collection device for diesel engine testing provided by the present invention. Figure 2It is a structural schematic diagram of a collection unit of a return oil collection device for diesel engine testing provided by the present invention. Figure 3 It is a cross-sectional structural schematic diagram of a collection unit of a return oil collection device for diesel engine testing provided by the present invention. Figure 4 It is a cross-sectional partial enlarged structural schematic diagram of a collection unit of a return oil collection device for diesel engine testing provided by the present invention. Figure 5 The present invention is a schematic cross-sectional structural diagram of an outer shell of a collection unit of an oil return collection device for diesel engine testing provided by the present invention.

[0028] The present invention provides an oil return collection device for diesel engine testing, comprising an engine 101, a filter 102, and an oil return pipeline 103 connecting the filter 102 and the engine 101, and also comprising a collection unit connected to the oil return pipeline 103, the collection unit comprising an oil pipeline 104 connected to the oil return pipeline 103, an oil collecting shell 105 arranged on one side of the oil pipeline 104, and a negative pressure pump 106 arranged on one side of the oil collecting shell 105, the oil pipeline 104 is connected to the oil return pipeline 103, the oil collecting shell 105 is connected to the oil return pipeline 103 through the oil pipeline 104, and a valve body 107 is further provided at the connection between the oil collecting shell 105 and the oil pipeline 104, and the negative pressure pump 106 is connected to the upper part of the oil collecting shell 105 through an external pipeline.

[0029] When conducting a performance test of the diesel engine 101, the engine 101 is used to connect the filter 102, so as to achieve a clearer understanding of the performance of the engine 101 and avoid the operation being affected by the quality problem of the diesel. Since it belongs to the prior art, it has been clearly recorded in the prior art CN 114199580A. The technical solution of the present application is based on the prior art, and the collection unit is added to the return oil pipeline 103, and the oil delivery pipe 104 is used to connect the return oil pipeline 103, and the oil collecting shell 105 is arranged below the oil delivery pipe 104. When the filter 102 needs to be replaced, the negative pressure pump 106 can be directly started after the engine 101 is turned off. After the negative pressure is generated in the oil collecting shell 105, the diesel in the return oil pipeline 103 can enter the oil collecting shell 105 more quickly under the action of the negative pressure and gravity, thereby avoiding the problem of diesel leakage and pollution of the surrounding environment during the process of replacing the filter 102.

[0030] Among them, the oil collecting shell 105 is provided with a accommodating chamber 108 for storing diesel, and the accommodating chamber 108 is an inverted conical column structure that is wide at the top and narrow at the bottom, and the accommodating chamber 108 is also provided with a negative pressure interface 109 connected to the negative pressure pump 106 and an oil inlet interface 110 connected to the oil pipeline 104, and the negative pressure interface 109 and the oil inlet interface 110 are arranged opposite to each other in the upper part of the accommodating chamber 108.

[0031] The accommodating chamber 108 is an inverted conical column structure that is wide at the top and narrow at the bottom. After the oil enters the accommodating chamber 108 through the oil inlet interface 110, it can gather to the bottom of the accommodating chamber 108 under the action of gravity. The negative pressure interface 109 is used to connect with the negative pressure pump 106 to form a negative pressure in the accommodating chamber 108 to attract diesel into the accommodating chamber 108, so as to improve the efficiency of diesel entering the accommodating chamber 108.

[0032] Among them, the oil collecting shell 105 is also provided with an oil unloading valve 111, and the oil unloading valve 111 is arranged at the bottom of the accommodating chamber 108. The oil unloading valve 111 includes an oil cylinder 112 docked with the accommodating chamber 108 and a closed shell 113 sleeved on the outside of the oil cylinder 112. The bottom of the oil cylinder 112 is provided with an oil outlet 114, and the closed shell 113 is rotatably connected to the oil cylinder 112.

[0033] The oil unloading valve 111 is arranged at the bottom of the oil collecting shell 105. After the oil collecting shell 105 completes the diesel collection work in the oil return pipeline 103, the oil unloading valve 111 is used to discharge the collected diesel to the outside. The oil cylinder 112 is connected to the accommodating chamber 108, and the closed shell 113 is used to seal the oil cylinder 112. After the diesel in the oil return pipeline 103 is collected, the negative pressure pump 106 is closed and the closed shell 113 is rotated so that the oil outlet 114 can discharge the diesel to the outside through the closed shell 113.

[0034] Among them, the closed shell 113 includes a rotating sleeve 115 rotatably connected to the cylinder 112 and an outer shell body 116 with a through hole 117 at the bottom. The rotating sleeve 115 is arranged on the upper inner side of the outer shell body 116. The outer shell body 116 is rotatably connected to the cylinder 112 through the rotating sleeve 115. The through hole 117 is arranged on one side of the bottom of the outer shell body 116, so as to rotate the closed shell 113 so that the through hole 117 is aligned with the oil outlet 114.

[0035] The rotating sleeve 115 is arranged on the upper side of the outer shell 116, and the outer shell 116 realizes relative rotation with the oil cylinder 112 through the rotating sleeve 115, so that the oil outlet 114 can be aligned with the through hole 117, so that the diesel in the oil cylinder 112 can be discharged to the outside through the through hole 117.

[0036] Among them, a sealing gasket 118 is provided on the inner wall of the through hole 117, and the sealing gasket 118 extends along the inner wall of the through hole 117 to form a step 119 slightly higher than the bottom of the outer shell 116 above the bottom of the outer shell 116, and the step 119 is used to limit the overflow direction of the oil when the through hole 117 is aligned with the oil outlet 114.

[0037] The sealing gasket 118 is disposed on the inner wall of the through hole 117 . The sealing gasket 118 is disposed so that when the through hole 117 is aligned with the oil outlet 114 , the sealing gasket 118 can form a channel for oil discharge in the gap between the outer shell 116 and the oil cylinder 112 .

[0038] The collecting unit is further provided with an oil collecting tank 120 , and the oil collecting tank 120 is arranged at the lower side of the oil unloading valve 111 .

[0039] The oil collecting tank 120 is disposed at the lower side of the oil unloading valve 111 , that is, the oil collecting tank 120 is used to connect with the oil discharged from the through hole 117 .

[0040] The oil return collection device for diesel engine testing of the present invention improves the structure of the collection device on the basis of the prior art, and adds the collection unit to collect the oil, so that when the filter 102 needs to be replaced, the diesel in the oil return pipeline 103 can be quickly collected, effectively improving the efficiency of replacing the filter 102.

[0041] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A return oil collection device for diesel engine testing, comprising an engine, a filter and a return oil pipeline connecting the filter and the engine, characterized in that: It also includes a collecting unit connected to the oil return pipeline, the collecting unit includes an oil pipeline connected to the oil return pipeline, an oil collecting shell arranged on one side of the oil pipeline, and a negative pressure pump arranged on one side of the oil collecting shell, the oil pipeline is connected to the oil return pipeline through the oil pipeline, and a valve body is also provided at the connection between the oil collecting shell and the oil pipeline, and the negative pressure pump is connected to the upper part of the oil collecting shell through an external pipeline.

2. The oil return collection device for diesel engine testing according to claim 1, characterized in that: A accommodating chamber for storing diesel is provided in the oil collecting shell, and the accommodating chamber is an inverted conical column structure that is wide at the top and narrow at the bottom. The accommodating chamber is also provided with a negative pressure interface connected to the negative pressure pump and an oil inlet interface connected to the oil pipe. The negative pressure interface and the oil inlet interface are arranged opposite to each other at the upper part of the accommodating chamber.

3. The oil return collection device for diesel engine testing according to claim 2, characterized in that: The oil collecting shell is also provided with an oil unloading valve, which is arranged at the bottom of the accommodating cavity. The oil unloading valve includes an oil cylinder docked with the accommodating cavity and a closed shell sleeved on the outside of the oil cylinder. An oil outlet is provided at the bottom of the oil cylinder, and the closed shell is rotatably connected to the oil cylinder.

4. The oil return collection device for diesel engine testing according to claim 3, characterized in that: The closed outer shell includes a rotating sleeve rotatably connected to the oil cylinder and an outer shell body with a through hole at the bottom. The rotating sleeve is arranged on the upper inner side of the outer shell body. The outer shell body is rotatably connected to the oil cylinder through the rotating sleeve. The through hole is arranged on one side of the bottom of the outer shell body for rotating the closed outer shell to align the through hole with the oil outlet.

5. The return oil collection device for diesel engine testing according to claim 4, characterized in that: A sealing gasket is provided on the inner wall of the through hole, and the sealing gasket extends along the inner wall of the through hole to form a step slightly higher than the bottom of the outer shell above the bottom of the outer shell, and the step is used to limit the overflow direction of the oil when the through hole is aligned with the oil outlet.

6. The return oil collection device for diesel engine testing according to claim 5, characterized in that: The collecting unit is further provided with an oil collecting tank, and the oil collecting tank is arranged at the lower side of the oil unloading valve.

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