Hydraulic oil tank and engineering machine

Abstract

The utility model discloses a hydraulic oil tank and engineering machinery, including the box, the inside of box is equipped with from left to right in proper order and set up the oil return area, the baffle, the oil absorption area, the top edge of baffle is connected with the top wall of box, the bottom edge of baffle with the bottom wall of box has the oil interval, the inside of oil return area is equipped with the vertical arrangement of oil return filter core, the top of oil return filter core is connected with the top wall of oil return area, the outside of oil return filter core is equipped with the coaxial arrangement of oil return filter drum, oil return filter core with between oil return filter drum is equipped with the coaxial arrangement of filter screen, the lateral wall of oil return filter drum is equipped with the hole group of intercommunication, the bottom of oil return filter core is connected with one end of oil return pipeline, the lateral wall of oil return area is equipped with the oil return port, and the other end of oil return pipeline is connected with oil return port, the lateral wall of oil absorption area is equipped with the oil suction port, and the oil suction port is connected with oil suction pipeline. Bubble gathers, and the ability of defoaming is strong.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a hydraulic oil tank and engineering machinery. Background Technology

[0002] According to general design standards, in order to ensure sufficient oil sedimentation and heat dissipation, the volume of hydraulic oil tank is usually designed to be 3-5 times the pump flow rate per minute. For front-end cranes, in order to facilitate layout and meet heat dissipation requirements, the hydraulic system usually adopts the form of a small oil tank plus a radiator. In this way, the volume of the oil tank can generally be 0.5-1 times the pump flow rate per minute, or even as low as 0.3 times.

[0003] The shortcomings of existing technologies are as follows:

[0004] When the hydraulic oil tank volume is reduced, the distance between the hydraulic return and suction areas becomes very close. The oil does not pass tightly through the isolation baffle and return filter from the return port to the suction port, which cannot effectively promote the escape of oil bubbles. Too many air bubbles in the oil will affect the service life of the hydraulic system and will also cause a lot of unnecessary noise, thus affecting the driving experience. Utility Model Content

[0005] The purpose of this utility model is to provide a hydraulic oil tank and engineering machinery to solve the problem in the prior art where the oil suction area and oil return area of ​​the small oil tank in the front crane are too close, which cannot effectively promote the escape of air bubbles.

[0006] To achieve the above objectives, the present invention provides a hydraulic oil tank, including a tank body. The tank body has an oil return zone, a partition, and an oil suction zone arranged sequentially from left to right. The top edge of the partition is connected to the top wall of the tank body, and the bottom edge of the partition has an oil passage gap with the bottom wall of the tank body. The oil return zone has a vertically arranged oil return filter element inside, with its top connected to the top wall of the oil return zone. An oil return filter cylinder is coaxially arranged outside the oil return filter element. A filter screen is coaxially arranged between the oil return filter element and the oil return filter cylinder. The side wall of the oil return filter cylinder has a group of holes communicating with the inside and outside. The bottom of the oil return filter element is connected to one end of a oil return pipeline. The side wall of the oil return zone has an oil return port, and the other end of the oil return pipeline is connected to the oil return port. The side wall of the oil suction zone has an oil suction port, which is connected to the oil suction pipeline.

[0007] Furthermore, the front edge and rear edge of the partition are connected to the front wall and rear wall of the box, respectively.

[0008] Furthermore, the top wall of the oil suction area is provided with an oil filling port, and an air filter is installed in the oil filling port.

[0009] Furthermore, the top of the oil return filter element is detachably connected to the top wall of the oil return zone via a flange pressure plate, and the top of the oil return filter cartridge is provided with a release hole, which is located above the group of holes.

[0010] Furthermore, the top walls of the oil return zone and the oil suction zone are respectively provided with lifting studs, the bottom walls of the oil return zone and the oil suction zone are respectively provided with oil drain ports, and the rear wall of the oil suction zone is provided with a level gauge.

[0011] Furthermore, the left wall and the lower middle position of the front wall of the oil return zone are respectively provided with a first flange opening, and an oil return flange is installed on the first flange opening, and the oil return port is provided on the oil return flange.

[0012] Furthermore, the other end of the return oil pipeline passes through the return oil port and is connected to the return oil flange block, and the return oil pipeline is L-shaped.

[0013] Furthermore, a second flange is provided at the lower middle position of the right wall and the front wall of the oil suction area, and an oil suction flange is installed on the second flange, and the oil suction port is provided on the oil suction flange.

[0014] Furthermore, the oil suction flange on the right wall is provided with two oil suction ports, and the oil suction flange on the front wall is provided with two oil suction ports, and the oil suction pipe passes through the oil suction ports.

[0015] This utility model also provides an engineering machinery, including an engineering machinery body and a hydraulic oil tank as described in any of the above technical solutions, wherein the hydraulic oil tank is disposed on the engineering machinery body.

[0016] In summary, the application of the technical solution of this utility model has the following beneficial effects: The structure design of this utility model is reasonable. (1) By setting up a box, the inside of the box is provided with a return oil area, a partition, and an oil suction area arranged from left to right. The top edge of the partition is connected to the top wall of the box, and the bottom edge of the partition has an oil passage gap with the bottom wall of the box. Thus, when the volume of the hydraulic oil tank is small, although the return oil area and the oil suction area of ​​the hydraulic oil tank are very close, the partition separates the return oil area from the oil suction area. The partition can be used to block the return oil impact foam from entering the oil suction pipe and promote the escape of the bubbles. At the same time, the oil in the return oil area can bypass the partition and enter the oil suction area through the oil passage gap. In this way, the partition extends the flow path of the oil, which is conducive to the accumulation and floating of oil bubbles in the return oil area and has strong defoaming ability. (2) The oil return zone is equipped with a vertically arranged oil return filter element. The top of the oil return filter element is connected to the top wall of the oil return zone. The oil return filter element is equipped with a coaxially arranged oil return filter cylinder. A filter screen is coaxially arranged between the oil return filter element and the oil return filter cylinder. The side wall of the oil return filter cylinder is equipped with a group of holes that connect the inside and outside. The bottom of the oil return filter element is connected to one end of the oil return pipeline. The side wall of the oil return zone is equipped with an oil return port. The other end of the oil return pipeline is connected to the oil return port. The side wall of the oil suction zone is equipped with an oil suction port. The oil suction port is connected to the oil suction pipeline. Thus, the oil can pass through the oil return port, the oil return pipeline, the oil return filter element, the filter screen, and the group of holes in sequence to enter the oil return zone. Then it flows downward and enters the oil suction zone through the oil passage. Then it flows upward and enters the oil suction pipeline through the oil suction port. Since the filter screen and the group of holes can work together to filter the air bubbles in the oil and extend the oil flow path, it is conducive to the accumulation of air bubbles, which rise to the top of the inside of the oil return filter cylinder and finally dissipate into the air. The defoaming ability is strong. Analysis shows that this invention can isolate most of the air bubbles generated by the return oil from the hydraulic oil tank and allow them to escape into the air. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model with a partial cross-section;

[0019] Figure 3 This is a schematic diagram of the oil suction flange and oil suction pipeline of this utility model;

[0020] Explanation of reference numerals in the attached drawings: box body (1), partition plate (2), return oil filter cartridge (3), return oil pipeline (4), suction oil pipeline (5), air filter (6), flange pressure plate (7), lifting stud (8), drain port (9), level gauge (10), return oil flange block (11), return oil flange (12), suction oil flange (13); return oil area (101), suction oil area (102), oil passage interval (103). Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, but this does not constitute a limitation on the scope of protection of the present utility model.

[0022] In this utility model, for clearer description, the following explanation is provided: The observer faces the attached... Figure 1 When observing, the observer's left side is designated as left, the observer's right side as right, the area in front of the observer as front, the area behind the observer as back, the area above the observer as top, and the area below the observer as bottom. It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below" used in this document indicate the orientation or positional relationship based on the accompanying drawings. These are merely for the purpose of clearly describing the present invention and do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0023] See Figures 1 to 3This embodiment provides a hydraulic oil tank, including a tank body 1. The interior of the tank body 1 is provided with a return oil zone 101, a partition 2, and an oil suction zone 102 arranged sequentially from left to right. The top edge of the partition 2 is connected to the top wall of the tank body 1, and the bottom edge of the partition 2 has an oil passage gap 103 with the bottom wall of the tank body 1. The interior of the return oil zone 101 is provided with a vertically arranged return oil filter element. The top of the return oil filter element is connected to the top wall of the return oil zone 101. The exterior of the return oil filter element is provided with a coaxially arranged return oil filter cylinder 3. A filter screen is provided between the return oil filter element and the return oil filter cylinder 3. The side wall of the return oil filter cylinder 3 is provided with a group of holes communicating with the inside and outside. The bottom of the return oil filter element is connected to one end of the return oil pipeline 4. The side wall of the return oil zone 101 is provided with a return oil port. The other end of the return oil pipeline 4 is connected to the return oil port. The side wall of the oil suction zone 102 is provided with an oil suction port, and the oil suction port is connected to the oil suction pipeline 5. Function: (1) By setting up a box, the inside of the box is provided with a return oil area, a baffle, and an oil suction area arranged from left to right. The top edge of the baffle is connected to the top wall of the box, and the bottom edge of the baffle is separated from the bottom wall of the box. Thus, when the volume of the hydraulic oil tank is small, although the return oil area and the oil suction area of ​​the hydraulic oil tank are very close, the baffle separates the return oil area from the oil suction area. The baffle can be used to block the return oil impact foam from entering the suction pipe and promote the escape of the bubbles. At the same time, the oil in the return oil area can bypass the baffle through the oil suction area and enter the oil suction area. In this way, the baffle extends the flow path of the oil, which is conducive to the accumulation and floating of oil bubbles in the return oil area and has a strong defoaming ability. (2) The oil return zone is equipped with a vertically arranged oil return filter element. The top of the oil return filter element is connected to the top wall of the oil return zone. The oil return filter element is equipped with a coaxially arranged oil return filter cylinder. A filter screen is coaxially arranged between the oil return filter element and the oil return filter cylinder. The side wall of the oil return filter cylinder is equipped with a group of holes that connect the inside and outside. The bottom of the oil return filter element is connected to one end of the oil return pipeline. The side wall of the oil return zone is equipped with an oil return port. The other end of the oil return pipeline is connected to the oil return port. The side wall of the oil suction zone is equipped with an oil suction port. The oil suction port is connected to the oil suction pipeline. Thus, the oil can pass through the oil return port, the oil return pipeline, the oil return filter element, the filter screen, and the group of holes in sequence to enter the oil return zone. Then it flows downward and enters the oil suction zone through the oil passage. Then it flows upward and enters the oil suction pipeline through the oil suction port. Since the filter screen and the group of holes can work together to filter the air bubbles in the oil and extend the oil flow path, it is conducive to the accumulation of air bubbles, which rise to the top of the inside of the oil return filter cylinder and finally dissipate into the air. The defoaming ability is strong. Analysis shows that this invention can isolate most of the air bubbles generated by the return oil from the hydraulic oil tank and allow them to escape into the air.

[0024] Specifically, the front and rear edges of the partition 2 are connected to the front and rear walls of the housing 1, respectively. Function: This makes the partition connection more stable and better separates the oil suction area and the oil return area through the partition.

[0025] Specifically, the top wall of the oil suction area 102 is provided with an oil filling port, and an air filter 6 is installed in the oil filling port. Function: By setting a large-diameter oil filling port with an air filter, hydraulic oil can be added to the oil tank through the oil filling port. When the hydraulic level rises, the air in the oil tank can be filtered by the air filter and discharged. When the level drops, external air can be filtered by the air filter and drawn into the oil tank.

[0026] Specifically, the top of the return oil filter element is detachably connected to the top wall of the return oil zone 101 via a flange pressure plate 7. The top of the return oil filter cylinder 3 is provided with a release hole, which is located above the group of holes. Function: The flange pressure plate 7 allows the return oil filter element to be disassembled and installed from the top of the housing; and because a filter screen coaxial with the return oil filter element is installed in the flow field between the return oil filter element and the cylinder, and the return oil port is connected to the inner cavity of the return oil filter element through the return oil pipeline, when bubbles gather and rise to the top inside the return oil filter cylinder, the bubbles can finally escape into the air through the release hole.

[0027] Specifically, the top walls of the return oil zone 101 and the suction oil zone 102 are each equipped with a lifting stud 8, and the bottom walls of the return oil zone 101 and the suction oil zone 102 are each equipped with a drain port 9. A level gauge 10 is installed on the rear wall of the suction oil zone 102. Functions: The lifting stud 8 facilitates the lifting of the hydraulic oil tank, and the drain port 9 facilitates oil draining. It is worth noting that the drain port 9 is blocked when no oil is being drained. The level gauge is used to observe the liquid level in the oil tank.

[0028] Specifically, the left wall and the lower middle position of the front wall of the oil return zone 101 are respectively provided with a first flange port, and an oil return flange 12 is installed on the first flange port. The oil return flange 12 is provided with an oil return port. Function: The oil return port of the oil return zone is located near the bottom wall of the oil tank for better matching with the oil return filter element. By providing first flange ports in two positions, different types and numbers of oil suction ports can be integrated according to different models.

[0029] Specifically, the other end of the return oil pipeline 4 passes through the return oil port and connects to the return oil flange block 11. The return oil pipeline 4 is L-shaped. Function: The return oil flange block 11 facilitates connection to external parts, and the L-shaped return oil pipeline 4 is easier to connect.

[0030] Specifically, a second flange is provided on the lower middle position of the right wall and the front wall of the oil suction zone 102, respectively. An oil suction flange 13 is installed on the second flange, and an oil suction port is provided on the oil suction flange 13. Function: The oil suction port of the oil suction zone 102 is located near the bottom wall of the oil tank for better oil suction. By providing second flanges in two positions, different types and numbers of oil suction ports can be integrated according to different models.

[0031] Specifically, the oil suction flange 13 on the right wall has two oil suction ports, and the oil suction flange 13 on the front wall has two oil suction ports. The oil suction pipe 5 passes through the oil suction ports. Function: Each oil suction flange 13 is provided with two oil suction ports, which better achieves oil suction coordination.

[0032] This utility model also provides an engineering machinery, including a machinery body and a hydraulic oil tank according to any of the above-mentioned technical solutions, wherein the hydraulic oil tank is disposed on the machinery body. Application: The hydraulic oil tank of this utility model can be applied to the hydraulic systems of large mobile machinery such as reach stackers.

[0033] In summary, in this invention, the oil enters the oil tank through the return oil filter element, filter screen, and pore group, extending the oil flow path and facilitating the aggregation and floating of air bubbles, resulting in strong defoaming capabilities. The hydraulic oil tank has a novel structure and reasonable layout, effectively isolating and dispersing most of the air bubbles generated during the hydraulic system's return oil flow into the air. This improves the service life of both hydraulic components and the hydraulic oil tank, significantly reducing user operating costs. Furthermore, the top-mounted disassembly and assembly of the oil tank facilitates maintenance.

[0034] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A hydraulic oil tank comprising a tank body (1), characterised in that: The interior of the housing (1) is provided with an oil return zone (101), a partition (2), and an oil suction zone (102) arranged sequentially from left to right. The top edge of the partition (2) is connected to the top wall of the housing (1), and the bottom edge of the partition (2) has an oil passage gap (103) with the bottom wall of the housing (1). The interior of the oil return zone (101) is provided with a vertically arranged oil return filter element. The top of the oil return filter element is connected to the top wall of the oil return zone (101), and the outer surface of the oil return filter element... The part is provided with a coaxially arranged return oil filter cartridge (3), and a coaxially arranged filter screen is provided between the return oil filter element and the return oil filter cartridge (3). The side wall of the return oil filter cartridge (3) is provided with a group of holes that connect the inside and outside. The bottom of the return oil filter element is connected to one end of the return oil pipeline (4). The side wall of the return oil area (101) is provided with a return oil port. The other end of the return oil pipeline (4) is connected to the return oil port. The side wall of the suction area (102) is provided with a suction port. The suction port is connected to the suction pipeline (5).

2. The hydraulic oil tank according to claim 1, characterized in that: The front and rear edges of the partition (2) are connected to the front and rear walls of the box (1), respectively.

3. The hydraulic oil tank according to claim 1, characterized in that: The top wall of the oil absorption zone (102) is provided with an oil filling port, and an air filter (6) is installed in the oil filling port.

4. A hydraulic oil tank according to claim 1, characterized in that: The top of the return oil filter element is detachably connected to the top wall of the return oil zone (101) via a flange pressure plate (7). The top of the return oil filter cylinder (3) is provided with a release hole, which is located above the group of holes.

5. A hydraulic oil tank according to claim 1, characterized in that: The top walls of the oil return zone (101) and the oil suction zone (102) are respectively provided with lifting studs (8), the bottom walls of the oil return zone (101) and the oil suction zone (102) are respectively provided with oil drain ports (9), and the rear wall of the oil suction zone (102) is provided with a level gauge (10).

6. A hydraulic oil tank according to any one of claims 1 to 5, characterized in that: The left wall and the lower middle position of the front wall of the oil return zone (101) are respectively provided with a first flange port, and an oil return flange (12) is installed on the first flange port. The oil return port is provided on the oil return flange (12).

7. A hydraulic oil tank according to claim 6, characterized in that: The other end of the return oil pipeline (4) passes through the return oil port and is connected to the return oil flange block (11). The return oil pipeline (4) is L-shaped.

8. A hydraulic oil tank according to any one of claims 1 to 5, characterized in that: The right wall and the lower middle position of the front wall of the oil suction area (102) are respectively provided with a second flange port, and an oil suction flange (13) is installed on the second flange port. The oil suction flange (13) is provided with the oil suction port.

9. A hydraulic oil tank according to claim 8, characterized in that: The oil suction flange (13) on the right wall is provided with two oil suction ports, and the oil suction flange (13) on the front wall is provided with two oil suction ports. The oil suction pipe (5) passes through the oil suction ports.

10. An engineering machinery, comprising an engineering machinery body, characterized in that: It also includes the hydraulic oil tank according to any one of claims 1 to 9, wherein the hydraulic oil tank is disposed on the body of the engineering machinery.

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