Fuel oil suction pipe structure and fuel oil tank assembly

Abstract

The utility model relates to a fuel oil suction pipe structure and a fuel tank component, which comprise a connecting seat and a connecting filter component, one end of the connecting seat is embedded on an external fuel tank and is provided with an oil suction port communicated with an inner cavity of the external fuel tank, and the connecting filter component is assembled at the oil suction port and is positioned in the external fuel tank. The filter is used for filtering large-particle impurities in fuel oil. When an engine runs, fuel oil passes through the connecting filter assembly, large sundries and particles in the external fuel tank are filtered out under the filtering action of the connecting filter assembly, even if particles exist in the fuel oil entering the engine, too large oil absorption resistance cannot be caused due to the fact that the particles are small, and before the fuel oil enters a fuel oil system of the engine, the fuel oil cannot be absorbed by the fuel oil. And secondary fine filtration is carried out through a filter of the engine, so that the performance of the engine is not reduced due to overlarge oil absorption resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel oil suction and filtering, in particular to a fuel oil suction pipe structure and a fuel tank component. Background Art

[0002] For non-road agricultural machinery products, the fuel system's oil suction pipe directly absorbs oil from the fuel tank, and the fuel system is usually filtered by the engine's own fuel filter. With the upgrade of emissions, medium and large power engines use an electronically controlled common rail fuel system, and an exhaust pollutant after-treatment system is added, which places more stringent requirements on the cleanliness of the fuel system.

[0003] Agricultural machinery products have complex operating conditions and harsh working environments. Most agricultural machinery products rarely go to gas stations to refuel. In this case, dust or debris may enter the fuel tank during the refueling process. On the other hand, the cleanliness of the inside of the fuel tank is not thoroughly cleaned during the production process, especially plastic fuel tanks may contain plastic debris.

[0004] In both of the above situations, when the conventional oil suction structure is used to suck the fuel inside the fuel tank, the large particles of debris inside can only be filtered by the engine's own filter, which may cause the accumulation of debris in the fuel suction line or at the joints, resulting in large oil suction resistance and affecting engine performance. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a fuel suction pipe structure and a fuel tank assembly which can perform preliminary filtering on the fuel inside the fuel tank mechanism to reduce the load of the engine and improve its performance.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a fuel suction pipe structure, including a connecting seat and a connecting filter assembly, one end of the connecting seat is embedded in an external fuel tank, and is provided with an oil suction port connected to the inner cavity of the external fuel tank, the connecting filter assembly is assembled at the oil suction port and is located in the external fuel tank, and is used to filter large particles of impurities inside the fuel.

[0007] The beneficial effect of the utility model is that when the engine is running, the fuel passes through the connecting filter assembly, and large debris and particulate matter in the external fuel tank are filtered out under the filtering action of the connecting filter assembly, so that even if particulate matter exists in the fuel entering the engine, the fuel will not cause excessive oil absorption resistance due to its small size. Before entering the fuel system of the engine, the fuel is finely filtered for a second time through the engine's own filter, thereby ensuring that the performance of the engine will not be reduced due to excessive oil absorption resistance.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the connecting filter assembly includes an oil suction pipe, a first frame and a first filter screen. The connecting seat is assembled on the upper end of the external fuel tank. The oil suction pipe is vertically arranged at one end inside the external fuel tank, and its upper end is connected and communicated with the oil suction port. The first frame is a vertically arranged cylindrical hollow frame, and its upper end is mounted on the lower end of the oil suction pipe. The first filter screen is covered on the outer surface and the lower end of the first frame.

[0010] The above technical solution can be achieved by arranging an oil suction pipe at the oil suction port of the fuel tank and arranging a first filter at the end of the oil suction pipe, so that the fuel inside the fuel tank can be filtered of large particles and impurities.

[0011] Furthermore, the first frame includes a plurality of vertically arranged first frame bars and a plurality of first circular rings, the plurality of first circular rings are vertically concentrically arranged and spaced apart, the plurality of first frame bars are circumferentially distributed along the first circular rings, and are connected and fixed to the plurality of first circular rings.

[0012] The above technical solution can ensure the structural strength of the device and achieve the purpose of filtering large particles of debris by arranging a combination of the first frame bar and the first ring and arranging the first filter net on the composed first frame.

[0013] Furthermore, the number of the first frame bars and the number of the first circular rings are both 2-6, and the number of the first frame bars is equal to the number of the first circular rings.

[0014] The above technical solution can improve the structural strength of the first frame and prevent it from being deformed after being subjected to the pressure of impurities for a long time by providing a plurality of first frame bars and first rings and combining the two to form a first frame.

[0015] Furthermore, the first frame and the first filter screen are both made of stainless steel.

[0016] The above technical solution can further improve the structural strength of the device and prevent it from rusting by adopting the first frame and the first filter screen made of stainless steel.

[0017] Furthermore, the connecting filter assembly includes a second frame and a second filter screen, the connecting seat is mounted on the lower end side wall of the external fuel tank, the second frame is a cylindrical hollow frame and is horizontally arranged, one end of the second frame is mounted at the oil suction port, and the second filter screen is covered on the outside and the other end of the second frame.

[0018] The above technical solution can select the position of the fuel tank's oil suction port according to the actual working conditions and the requirements of the overall machine layout space, adaptively change the positions of the second frame and the second filter, as well as the connection relationship between the two and the oil suction pipe coupling seat. Since the oil suction port is arranged at the lower end of the fuel tank, there is no need to use an oil suction pipe, and the fuel located at the lower part of the fuel tank can be directly sucked.

[0019] Furthermore, the second frame includes a plurality of horizontally arranged second frame bars and a plurality of second circular rings, wherein the plurality of second circular rings are horizontally concentrically arranged and assembled on the second frame bars at intervals, and the plurality of second frame bars are distributed circumferentially along the second circular rings, wherein the second circular ring closest to the oil suction port is sleeved on the outside of the oil suction pipe and is connected and fixed thereto.

[0020] The above technical solution can ensure the structural strength of the device while enabling it to filter large particles of debris by providing a second cylindrical frame and arranging the second filter screen outside the second frame.

[0021] Furthermore, the number of the second frame bars and the second circular rings are both 2-6, and the number of the second frame bars is equal to the number of the second circular rings.

[0022] The above technical solution improves the structural strength of the second frame while ensuring that it can filter out large particles of debris by providing a second frame consisting of a second frame bar and a second ring and sleeves the second filter screen on the second frame.

[0023] Furthermore, the second frame and the second filter screen are both made of stainless steel.

[0024] The above technical solution adopts the second frame and the second filter screen of stainless steel components, so that they can play a rust-proof role while improving the overall structural strength.

[0025] The second purpose of the utility model is to provide a fuel tank structure capable of filtering large particles of debris.

[0026] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a fuel tank assembly includes a fuel suction pipe structure.

[0027] The above technical solution sets the fuel suction pipe inside the fuel tank so that the fuel is initially filtered before reaching the engine. After filtering out large particles of debris, the fuel is then filtered through the filter inside the engine, which can reduce the engine's oil suction resistance and improve engine performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure when the connecting seat is arranged on the upper part of the external fuel tank in the embodiment of the utility model;

[0029] Figure 2 This is a schematic diagram of the three-dimensional structure of the first frame in the embodiment of the utility model;

[0030] Figure 3 This is a schematic diagram of the structure when the connecting seat is arranged at the lower part of the external fuel tank in the embodiment of the utility model;

[0031] Figure 4 It is a schematic diagram of the fuel tank structure when the oil suction pipe assembly is arranged at the upper end of the fuel tank in the embodiment of the utility model;

[0032] Figure 5 It is a schematic diagram of the fuel tank structure when the oil suction pipe assembly is arranged at the lower end of the fuel tank in the embodiment of the utility model.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Fuel suction pipe structure; 2. Fuel tank; 3. Fuel pipe assembly; 4. Engine; 101. Connecting seat; 102. Fuel suction pipe; 103. First frame; 104. First filter; 105. Second frame; 106. Second filter. DETAILED DESCRIPTION

[0035] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0036] Example

[0037] like Figure 1-5 As shown, a fuel suction pipe structure includes a connecting seat 101 and a connecting filter assembly. One end of the connecting seat 101 is embedded in an external fuel tank and is provided with an oil suction port connected to the inner cavity of the external fuel tank. The connecting filter assembly is assembled at the oil suction port and is located in the external fuel tank for filtering large particles of impurities inside the fuel.

[0038] The working principle is: when the engine is running, the fuel passes through the connecting filter component, and the large debris and particulate matter inside the external fuel tank are filtered out under the filtering action of the connecting filter component, so that the fuel entering the engine even if there are particulate matter inside, because the particulate matter is small, it will not cause excessive oil absorption resistance. Before entering the engine's fuel system, it is subjected to secondary fine washing and filtration through the engine's own filter, thereby ensuring that the engine's performance will not be reduced due to excessive oil absorption resistance.

[0039] The above technical solution can achieve the purpose of reducing the engine load by setting a connection filter component and setting it at the fuel suction port of the fuel tank, so that preliminary filtering is performed in advance when the fuel is sucked into the engine.

[0040] Preferably, the connecting filter assembly includes an oil suction pipe 102, a first frame 103 and a first filter 104. The connecting seat 101 is assembled on the upper end of the external fuel tank. The oil suction pipe 102 is vertically arranged at one end inside the external fuel tank, and its upper end is connected to and communicated with the oil suction port. The first frame 103 is a vertically arranged cylindrical hollow frame, and its upper end is mounted on the lower end of the oil suction pipe 102. The first filter 104 is covered on the outer surface and the lower end of the first frame 103.

[0041] The working principle is as follows: when the connecting seat 101 is set at the upper end of the fuel tank, when the fuel is sucked, the fuel passes through the first filter 104, and the large particles of debris inside the fuel will be blocked outside the first filter 104. At the same time, the filtered fuel passes through the first frame 103 to reach the oil suction pipe 102, and finally is sucked out to the external engine through the oil suction pipe 102.

[0042] The above technical solution can be achieved by arranging an oil suction pipe 102 at the oil suction port of the fuel tank and arranging a first filter 104 at the end of the oil suction pipe 102, so that the fuel inside the fuel tank can be filtered of large particles and impurities.

[0043] Preferably, the first frame 103 includes a plurality of vertically arranged first frame bars and a plurality of first circular rings, the plurality of first circular rings are vertically concentrically arranged and spaced apart, the plurality of first frame bars are circumferentially distributed along the first circular rings, and are connected and fixed to the plurality of first circular rings.

[0044] The working principle is: by setting a plurality of concentrically arranged first rings and connecting and tightening the first rings using a plurality of first frame conditions, the structure of the entire first frame 103 is more stable, and during long-term filtration, the first frame 103 will not be deformed due to excessive oil suction pressure.

[0045] The above technical solution can ensure the structural strength of the device and filter out large particles of debris by arranging a combination of the first frame bar and the first ring and arranging the first filter 104 on the composed first frame 103.

[0046] Preferably, the number of the first frame strips and the number of the first circular rings are both 4, and the number of the first frame strips and the number of the first circular rings are 4, which corresponds to 4.

[0047] The two first circular rings are respectively arranged at two ends of the first frame strip, and the other two first circular rings are distributed on the first frame strip at intervals and arranged along the length direction thereof.

[0048] The working principle is: by setting multiple first frame bars and multiple first circular rings, and setting two of the circular rings at the two ends of the first frame bar respectively, and the remaining two first circular rings are set above the first frame bar at intervals along the length direction of the first frame bar, which plays the role of tightening the entire first frame and making the structure of the entire first frame more stable.

[0049] The above technical solution can improve the structural strength of the first frame and prevent it from being deformed after being subjected to the pressure of impurities for a long time by providing a plurality of first frame bars and first rings and combining the two to form a first frame.

[0050] Preferably, the first frame 103 and the first filter screen 104 are both made of stainless steel.

[0051] The working principle is: by providing the first frame 103 and the first filter screen 104 made of stainless steel, the structural strength of both is improved.

[0052] The above technical solution can further improve the structural strength of the device and prevent it from rusting by using the first frame 103 and the first filter screen 104 made of stainless steel.

[0053] Preferably, the connection filter assembly includes a second frame 105 and a second filter 106, the connecting seat 101 is mounted on the lower end side wall of the external fuel tank, the second frame 105 is a cylindrical hollow frame and is horizontally arranged, one end of the second frame 105 is mounted at the oil suction port, and the second filter 106 is covered on the outside of the second frame 105 and the other end.

[0054] The working principle is as follows: when the connecting seat 101 is set at the lower end of the fuel tank, when the fuel is sucked, the fuel passes through the second filter 106, and the large particles of debris inside the fuel will be blocked outside the second filter 106. At the same time, the filtered fuel passes through the second filter 106 directly to the oil suction port, and finally is sucked out to the external engine through the oil suction port.

[0055] The above technical solution can select the position of the fuel tank suction port according to the actual working conditions and the requirements of the overall machine layout space, and adaptively change the positions of the second frame 105 and the second filter 106, as well as the connection relationship between the two and the suction pipe coupling seat 101. Since the suction port is arranged at the lower end of the fuel tank, there is no need to use a suction pipe, and the fuel located at the lower part of the fuel tank can be directly sucked.

[0056] Preferably, the second frame 105 includes a plurality of horizontally arranged second frame bars and a plurality of second circular rings, the plurality of second circular rings are horizontally arranged concentrically and assembled on the second frame bars at intervals, the plurality of second frame bars are distributed circumferentially along the second circular rings, and the second circular ring closest to the oil suction port is sleeved on the outside of the oil suction pipe 102 and fixedly connected thereto.

[0057] The working principle is: when the connecting seat 101 is set at the lower end of the fuel tank, the second frame 105 is directly connected to the connecting seat 101. Since it is set at the bottom, there is no need to use an oil suction pipe, which reduces the cost. At the same time, the second frame 105 composed of the second frame bar and the second ring is used to improve the structural strength of the second frame.

[0058] The above technical solution can ensure the structural strength of the device while enabling it to filter large particles of debris by providing a second cylindrical frame and arranging the second filter screen outside the second frame.

[0059] Preferably, the number of the second frame bars and the number of the second circular rings are both 4, and the number of the second frame bars is set to 4 corresponding to the number of the second circular rings.

[0060] The working principle is: by setting a plurality of second frame bars and second rings and combining the two, the overall structural strength of the second frame is improved, and at the same time, the purpose of filtering large particles of debris can be achieved.

[0061] The above technical solution improves the structural strength of the second frame while ensuring that it can filter out large particles of debris by providing a second frame consisting of a second frame bar and a second ring and sleeves the second filter screen on the second frame.

[0062] Preferably, the second frame 105 and the second filter screen 106 are both made of stainless steel.

[0063] The working principle is: the second frame 105 and the second filter screen 106 are also made of stainless steel components, which further improves the structural strength of the entire second frame and enables it to filter large particles of debris.

[0064] The above technical solution adopts the second frame 105 and the second filter screen 106 made of stainless steel, so that they can play a role of rust prevention and improve the overall structural strength.

[0065] Preferably, a fuel tank assembly comprises a fuel suction pipe structure 1.

[0066] The fuel tank assembly further includes a fuel tank body 2, a fuel pipe assembly 3 and an engine 4. The fuel tank body 2 is provided with an oil suction port, and a fuel suction pipe structure 1 is provided at the oil suction location, one end of which is connected to the fuel pipe assembly 3, and the other end extends to the inside of the fuel tank body 2. The other end of the fuel pipe assembly 3 is connected to the engine 4, so that the fuel can then be filtered from the inside of the fuel tank body 2 through the fuel suction pipe structure 1, reach the fuel pipe assembly 3 and be transported, and finally reach the fuel system of the engine 4.

[0067] The working principle is: a fuel suction pipe structure with filtering function is assembled on the fuel tank assembly, and the fuel inside the fuel tank body 2 is filtered and finally sent into the fuel system of the engine, thereby avoiding the accumulation of large particles of debris in the filter of the engine, reducing the oil suction resistance of the engine, and improving the performance of the engine.

[0068] The above technical solution sets the fuel suction pipe inside the fuel tank 2 so that the fuel undergoes preliminary filtration before reaching the engine. After filtering out large particles of debris, the fuel is then filtered through the filter inside the engine, which can reduce the engine's oil suction resistance and improve the engine's performance.

[0069] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0070] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0071] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0074] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A fuel suction pipe structure, characterized in that: It comprises a connecting seat (101) and a connecting filter assembly. One end of the connecting seat (101) is embedded in an external fuel tank and is provided with an oil suction port connected to the inner cavity of the external fuel tank. The connecting filter assembly is assembled at the oil suction port and is located in the external fuel tank for filtering large particles of impurities in the fuel.

2. A fuel suction pipe structure according to claim 1, characterized in that: The connecting filter assembly comprises an oil suction pipe (102), a first frame (103) and a first filter (104); the connecting seat (101) is mounted on the upper end of the external fuel tank; the oil suction pipe (102) is vertically arranged at one end inside the external fuel tank, and its upper end is connected to and communicates with the oil suction port; the first frame (103) is a vertically arranged cylindrical hollow frame, and its upper end is mounted on the lower end of the oil suction pipe (102); the first filter (104) is covered on the outer surface and the lower end of the first frame (103).

3. A fuel suction pipe structure according to claim 2, characterized in that: The first frame (103) comprises a plurality of vertically arranged first frame bars and a plurality of first circular rings, wherein the plurality of first circular rings are vertically concentrically arranged and spaced apart, and the plurality of first frame bars are circumferentially distributed along the first circular rings and are connected and fixed to the plurality of first circular rings.

4. A fuel suction pipe structure according to claim 3, characterized in that: The number of the first frame strips and the number of the first circular rings are both 2-6, and the number of the first frame strips is equal to the number of the first circular rings.

5. A fuel suction pipe structure according to claim 2, characterized in that: The first frame (103) and the first filter screen (104) are both made of stainless steel.

6. A fuel suction pipe structure according to claim 1, characterized in that: The connection filter assembly comprises a second frame (105) and a second filter screen (106); the connection seat (101) is mounted on the lower side wall of the external fuel tank; the second frame (105) is a cylindrical hollow frame and is horizontally arranged; one end of the second frame (105) is mounted at the oil suction port; the second filter screen (106) is covered on the outside and the other end of the second frame (105).

7. A fuel suction pipe structure according to claim 6, characterized in that: The second frame (105) comprises a plurality of horizontally arranged second frame bars and a plurality of second circular rings, wherein the plurality of second circular rings are horizontally arranged concentrically and assembled on the second frame bars at intervals, and the plurality of second frame bars are distributed along the circumference of the second circular rings, wherein the second circular ring closest to the oil suction port is sleeved on the outside of the oil suction pipe (102) and is connected and fixed thereto.

8. A fuel suction pipe structure according to claim 7, characterized in that: The number of the second frame bars and the number of the second rings are both 2-6, and the number of the second frame bars is equal to the number of the second rings.

9. A fuel suction pipe structure according to claim 6, characterized in that: The second frame (105) and the second filter screen (106) are both made of stainless steel.

10. A fuel tank assembly, characterized in that: It comprises a fuel suction pipe structure (1) as claimed in any one of claims 1 to 9.

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