Hydraulic oil tank for agricultural machinery

Abstract

The utility model provides an agricultural machinery hydraulic oil tank which comprises a tank body, a vertical plate is arranged at the bottom of the tank body, the edge of the vertical plate makes contact with the side wall of the tank body, and the lower portion of the tank body is divided into an oil suction area and an oil return area. An oil return pipe is further arranged in the tank body, the upper end of the oil return pipe is fixed to the upper portion of the tank body and communicated with the outside of the tank body, a horizontal section is arranged in the middle of the oil return pipe, and the lower end of the oil return pipe extends into the oil return area. According to the oil suction tank, the lower portion of the tank body is divided into the oil suction area and the oil return area through the vertical plate, impurities are precipitated in the oil return area, bubbles float to the liquid level in the oil return area to be broken, the bubbles and the impurities entering the oil suction area are greatly reduced, the bubbles and the impurities sucked out by an external hydraulic pump are reduced, and cavitation and abrasion of the hydraulic pump are avoided; the horizontal section in the middle of the oil return pipe buffers return oil, the oil flow speed is reduced, disturbance to impurities at the bottom of an oil return area is reduced, and the cleanliness of the oil entering an oil suction area is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil tanks, in particular to a hydraulic oil tank for agricultural machinery. Background Art

[0002] In agricultural machinery such as tractors, the oil in the hydraulic tank is typically recycled. Suction and return pipes are inserted into the hydraulic tank. During operation, the hydraulic pump draws oil from the tank through the suction pipe and delivers it to consuming units such as the cylinder, motor, and lubrication system. The return oil from each consuming unit converges in the return pipe, which then returns the oil to the tank. During this process, the hydraulic oil is frequently subjected to pressure fluctuations, flow rate fluctuations, and shocks, which can accumulate bubbles and impurities in the oil. These bubbles and impurities are dispersed as the hydraulic oil returns to the tank, making them susceptible to being drawn into the suction pipe. Furthermore, because the oil in the return pipe accelerates due to gravity, the impact of the return oil is significant, which can easily disturb impurities settled at the bottom of the tank and increase the amount of impurities drawn into the suction pipe. The increased intake of bubbles and impurities into the suction pipe exacerbates cavitation and wear in the hydraulic pump. Utility Model Content

[0003] The technical problem to be solved by the utility model is: how to reduce the return oil bubbles and impurities in the hydraulic oil tank sucked out by an external hydraulic pump.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] The utility model provides a hydraulic oil tank for agricultural machinery, comprising a box body, wherein a vertical plate is provided at the bottom of the box body, the edge of the vertical plate is in contact with the side wall of the box body, and the lower part of the box body is divided into an oil suction area and an oil return area; an oil return pipe is also provided in the box body, the upper end of the oil return pipe is fixed to the upper part of the box body and communicated with the outside of the box body, a horizontal section is provided in the middle part of the oil return pipe, and the lower end of the oil return pipe extends into the oil return area.

[0006] The beneficial effects of the utility model are:

[0007] By adopting the utility model, the lower part of the box body is divided into an oil suction area and an oil return area by a vertical plate, so that impurities in the return oil are precipitated in the oil return area, and bubbles float to the liquid surface and burst in the oil return area, thereby greatly reducing the bubbles and impurities entering the oil suction area, reducing the bubbles and impurities sucked out by the external hydraulic pump, and avoiding cavitation and wear of the hydraulic pump; in addition, the return oil is buffered by the horizontal section in the middle of the return oil pipe, which reduces the oil flow rate, reduces the disturbance of impurities at the bottom of the return oil area, improves the cleanliness of the oil entering the oil suction area, promotes the initial convergence of bubbles in the return oil, and promotes the bursting of bubbles.

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

[0009] Furthermore, there is a distance of 150 mm to 200 mm between the lower end of the oil return pipe and the bottom of the oil return area.

[0010] It is convenient to avoid the return oil from impacting the impurities at the bottom of the oil return area and improve the cleanliness of the oil.

[0011] Furthermore, the upper end of the oil return pipe is fixed on the top wall of the box body.

[0012] It is convenient to connect to the external oil return line. At the same time, the return oil has a large turning range when entering the horizontal section, which is convenient for fully reducing the flow rate.

[0013] Furthermore, a horizontal plate is provided above the oil suction area, and one end of the horizontal plate extends to above the oil return area.

[0014] The horizontal plate has the function of absorbing bubbles, which facilitates the convergence of bubbles and accelerates the bursting of bubbles.

[0015] Furthermore, the lower side of the horizontal plate is connected to the vertical plate, the two opposite edges of the vertical plate are sealed to the side wall of the box, and one edge of the vertical plate is provided with a notch; the lower end of the oil return pipe extends downward along the other edge of the vertical plate.

[0016] When the return oil enters the oil return area from the return oil pipe, the bubbles float up, the oil flows horizontally to the notch, and flows into the oil suction area from the notch, which promotes the diversion of bubbles and oil and effectively reduces the bubbles entering the oil suction area.

[0017] Furthermore, two opposite edges of the portion where the horizontal plate contacts the vertical plate are fixed to the side walls of the box.

[0018] The oil return area is relatively closed, preventing the oil from flowing directly from the oil return area to the oil suction area.

[0019] Furthermore, the oil absorption area is also provided with an oil absorption filter element.

[0020] The external oil suction pipe can be connected to the oil suction filter element to facilitate filtering impurities in the oil and improve the cleanliness of the oil sucked out from the oil suction area by the oil suction pipe.

[0021] Furthermore, a bracket is provided at the bottom of the oil suction area, and the oil suction filter is provided on the bracket, with a distance of 40 mm to 60 mm between the lower end of the oil suction filter and the bottom of the oil suction area.

[0022] The oil suction filter is located in the middle of the oil suction area, which ensures the effectiveness of oil suction, reduces the impurities entering the oil suction filter, and extends the service life of the oil suction filter.

[0023] Furthermore, a filling port is provided on the side wall of the upper portion of the box body, and a refueling cap is provided on the filling port.

[0024] It is convenient to add hydraulic oil from the outside, and at the same time, the oil filling cap ensures the sealing of the oil tank.

[0025] Furthermore, it also includes an anti-loosening bend plate, which is L-shaped, one end of the anti-loosening bend plate is detachably connected to one side of the filling port, and the other end of the anti-loosening bend plate extends to the side of the fuel cap away from the filling port.

[0026] The fuel cap is shielded by the anti-loosening bent plate to prevent it from loosening and ensure the sealing of the fuel tank. When adding hydraulic oil, the fuel cap can be opened by removing the anti-loosening bent plate, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the present utility model.

[0028] In the accompanying drawings, the technical features represented by the reference numerals are as follows:

[0029] 1- box body; 2- vertical plate; 3- oil suction area; 4- oil return area; 5- oil return pipe; 6- horizontal section; 7- cross plate; 8- oil suction filter element; 9- bracket; 10- filling port; 11- oil filling cap; 12- anti-loosening bent plate. DETAILED DESCRIPTION

[0030] 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.

[0031] This utility model refers to Figure 1 .

[0032] The utility model provides a hydraulic oil tank for agricultural machinery, comprising a box body 1, a vertical plate 2 being provided at the bottom of the box body 1, the edge of the vertical plate 2 being in contact with the side wall of the box body 1 and dividing the lower part of the box body 1 into an oil suction area 3 and an oil return area 4; an oil return pipe 5 is also provided in the box body 1, the upper end of the oil return pipe 5 is fixed to the upper part of the box body 1 and communicated with the outside of the box body 1, a horizontal section 6 is provided in the middle part of the oil return pipe 5, and the lower end of the oil return pipe 5 extends into the oil return area 4.

[0033] principle:

[0034] During operation, the oil suction pipe can be extended into the oil suction area 3, and an external hydraulic pump can draw oil from the oil suction area 3 through the oil suction pipe. After the oil has operated through the hydraulic unit, the external return oil circuit is connected to the return oil pipe 5, which directs the return oil into the oil return area 4. When the return oil passes through the horizontal section 6, its kinetic energy decreases, allowing bubbles to easily float up and converge, making it easier to separate from the oil. This also reduces the impact force of the oil, preventing it from dislodging impurities at the bottom when it flows into the oil return area 4. After the return oil enters the oil return area 4, bubbles rise to the liquid surface in the oil return area 4 and burst, allowing impurities to settle in the oil return area 4. The oil in the oil return area 4 then enters the oil suction area 3 from the upper side or edge of the vertical plate 2, preventing bubbles from entering the oil suction area 3.

[0035] By adopting the utility model, the lower part of the box body 1 is divided into the oil suction area 3 and the oil return area 4 by the vertical plate 2, so that impurities in the return oil are precipitated in the oil return area 4, and bubbles float to the liquid surface in the oil return area 4 and burst, which greatly reduces the bubbles and impurities entering the oil suction area 3, reduces the bubbles and impurities sucked out by the external hydraulic pump, and avoids cavitation and wear of the hydraulic pump; in addition, the return oil is buffered by the horizontal section 6 in the middle of the return oil pipe 5, which reduces the oil flow rate, reduces the disturbance of impurities at the bottom of the return oil area 4, improves the cleanliness of the oil entering the oil suction area 3, and promotes the initial convergence of bubbles in the return oil, which promotes the bursting of bubbles.

[0036] Furthermore, there is a distance of 150 mm to 200 mm between the lower end of the oil return pipe 5 and the bottom of the oil return area 4 .

[0037] This is convenient for preventing the return oil from impacting impurities at the bottom of the oil return area 4, thereby improving the cleanliness of the oil.

[0038] Furthermore, the upper end of the oil return pipe 5 is fixed on the top wall of the box body 1 .

[0039] It is convenient to connect to the external oil return line. At the same time, the return oil has a large turning range when entering the horizontal section 6, which is convenient for fully reducing the flow rate.

[0040] Furthermore, a transverse plate 7 is provided above the oil suction area 3 , and one end of the transverse plate 7 extends to above the oil return area 4 .

[0041] The transverse plate 7 has the function of absorbing bubbles, thereby promoting the convergence of bubbles and accelerating the bursting of bubbles.

[0042] Furthermore, the lower side of the horizontal plate 7 is connected to the vertical plate 2, the two opposite edges of the vertical plate 2 are sealed with the side walls of the box body 1, and one edge of the vertical plate 2 is provided with a notch; the lower end of the oil return pipe 5 extends downward along the other edge of the vertical plate 2.

[0043] When the return oil enters the oil return area 4 from the return oil pipe 5, the bubbles float up, the oil flows horizontally to the gap, and flows into the oil suction area 3 from the gap, promoting the diversion of bubbles and oil, and effectively reducing the bubbles entering the oil suction area 3.

[0044] Furthermore, two opposite edges of the portion where the horizontal plate 7 contacts the vertical plate 2 are fixed to the side walls of the box body 1 .

[0045] The oil return area 4 is relatively closed, preventing the oil from flowing directly from the oil return area 4 to the oil suction area 3.

[0046] Furthermore, the oil absorption area 3 is also provided with an oil absorption filter element 8.

[0047] The external oil suction pipe can be connected to the oil suction filter 8 to facilitate filtering impurities in the oil and improve the cleanliness of the oil sucked out from the oil suction area 3 by the oil suction pipe.

[0048] Furthermore, a bracket 9 is provided at the bottom of the oil suction area 3 , and the oil suction filter 8 is provided on the bracket 9 , with a distance of 40 mm to 60 mm between the lower end of the oil suction filter 8 and the bottom of the oil suction area 3 .

[0049] The oil suction filter element 8 is located in the middle of the oil suction area 3, which ensures the effectiveness of oil suction, while reducing impurities entering the oil suction filter element 8 and extending the service life of the oil suction filter element 8.

[0050] Furthermore, a filling port 10 is provided on the side wall of the upper portion of the box body 1 , and a fuel cap 11 is provided on the filling port 10 .

[0051] It is convenient to add hydraulic oil from the outside, and at the same time, the oil filling cap 11 ensures the sealing of the oil tank.

[0052] Furthermore, it also includes an anti-loosening bend plate 12, which is L-shaped. One end of the anti-loosening bend plate 12 is detachably connected to one side of the filling port 10, and the other end of the anti-loosening bend plate 12 extends to the side of the fuel cap 11 away from the filling port 10.

[0053] Note: The anti-loosening bent plate 12 and one side of the filling port 10 can be connected by bolts, pins or locks.

[0054] The anti-loosening bent plate 12 shields the fuel cap 11 to prevent the fuel cap 11 from loosening, thereby ensuring the sealing of the fuel tank. When adding hydraulic oil, the anti-loosening bent plate 12 can be removed to open the fuel cap 11, which is easy to operate.

[0055] In the description of the present invention, it should be understood that if there are descriptive terms indicating orientation, direction or positional relationship, such as: "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated in this specification is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of understanding the present invention and simplifying the description, and does not indicate or imply that the referred part, element or whole must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0056] In addition, if there are order description terms, such as "first", "second", etc., their use in this specification is to facilitate understanding or simplify the description. For example, in order to distinguish multiple technical features with the same type or function, but they have to be mentioned separately, this specification may use prefix or suffix order description terms to distinguish them. Therefore, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of such features. In the description of this utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, if terms describing the relative functional relationship of structures are used, such as "install", "connect", "connect", "fix", etc., they should be understood in a broad sense unless otherwise clearly specified and limited. For example, "install", "connect", "connect", etc. can be fixed connections, detachable connections, or integrated; can be mechanical connections or electrical connections; can be direct connections or indirect connections through an intermediate medium, can be internal connections between two elements or interactive relationships between two elements; "fix" can be fixed to form an integral body, or can be detachably fixed through fasteners; can be directly fixed or fixed through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above-mentioned descriptive terms in the present invention can be understood according to the specific circumstances, the context, the coherence of the preceding and following texts, etc.

[0058] In this utility model, if descriptive terms with ancillary or connecting meaning appear, for example, a first feature being "on" or "below" a second feature, these should not be interpreted as limiting unless otherwise expressly specified or limited. For example, "on" or "below" may refer to direct contact between the first and second features, or indirect contact between the first and second features through an intermediary. Those skilled in the art will understand the specific meanings of these descriptive terms in this utility model based on the specific circumstances, context, and coherence of the preceding and following texts.

[0059] Furthermore, when a first feature is “above,” “above,” or “above” a second feature, it 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. When a first feature is “below,” “below,” or “below” a second feature, it 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.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments, examples and features of different embodiments and examples described in this specification, unless there is any contradiction, and these combinations or combinations should all fall within the scope summarized by the present invention.

[0061] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in the field within the scope of information available from public channels and in combination with the technical inspiration given by the application documents are still within the scope of protection of the present application.

Claims

1. A hydraulic oil tank for agricultural machinery, characterized by: The invention comprises a box body (1), wherein a vertical plate (2) is provided at the bottom of the box body (1), the edge of the vertical plate (2) contacts the side wall of the box body (1), and divides the lower part of the box body (1) into an oil suction area (3) and an oil return area (4); an oil return pipe (5) is also provided in the box body (1), the upper end of the oil return pipe (5) is fixed to the upper part of the box body (1) and communicates with the outside of the box body (1), a horizontal section (6) is provided in the middle of the oil return pipe (5), and the lower end of the oil return pipe (5) extends into the oil return area (4).

2. The agricultural machinery hydraulic oil tank according to claim 1, characterized in that: There is a distance of 150 mm to 200 mm between the lower end of the oil return pipe (5) and the bottom of the oil return area (4).

3. The hydraulic oil tank for agricultural machinery according to claim 2, characterized in that: The upper end of the oil return pipe (5) is fixed on the top wall of the box body (1).

4. The agricultural machinery hydraulic oil tank according to claim 1, characterized in that: A transverse plate (7) is further provided above the oil suction area (3), and one end of the transverse plate (7) extends to above the oil return area (4).

5. The hydraulic oil tank for agricultural machinery according to claim 4, characterized in that: The lower side of the horizontal plate (7) is connected to the vertical plate (2), the two opposite edges of the vertical plate (2) are sealed to the side wall of the box body (1), and one edge of the vertical plate (2) is provided with a notch; the lower end of the oil return pipe (5) extends downward along the other edge of the vertical plate (2).

6. The hydraulic oil tank for agricultural machinery according to claim 5, characterized in that: The two opposite edges of the portion where the horizontal plate (7) contacts the vertical plate (2) are fixed on the side wall of the box body (1).

7. The hydraulic oil tank for agricultural machinery according to claim 1, characterized in that: The oil suction area (3) is also provided with an oil suction filter element (8).

8. The hydraulic oil tank for agricultural machinery according to claim 7, characterized in that: A bracket (9) is also provided at the bottom of the oil suction area (3), and the oil suction filter (8) is provided on the bracket (9). A distance of 40 mm to 60 mm is provided between the lower end of the oil suction filter (8) and the bottom of the oil suction area (3).

9. The hydraulic oil tank for agricultural machinery according to claim 1, characterized in that: A filling port (10) is also provided on the side wall of the upper portion of the box body (1), and a refueling cap (11) is provided on the filling port (10).

10. The hydraulic oil tank for agricultural machinery according to claim 9, characterized in that: The invention also includes an anti-loosening bent plate (12), which is L-shaped, one end of which is detachably connected to one side of the filling port (10), and the other end of which extends to the side of the fuel cap (11) away from the filling port (10).

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