Oil unloading device with low failure rate

Abstract

The utility model discloses an oil unloading device with low failure rate, which comprises a coarse filter tank, an oil unloading pump and an oil unloading truck, and the coarse filter tank is arranged between the oil unloading truck and the oil unloading pump. According to the utility model, the double filter cavities and the detachable filter frame are arranged, so that the quick switching and off-line cleaning of the filter cavities are realized under the condition of no shutdown, the industrial pain point of oil path interruption caused by blockage of a single-cavity filter structure is solved, and the maintenance process of the filter unit is simplified through modular design; manual intervention frequency and high-temperature oil product contact risk are remarkably reduced, the impurity interception capacity is remarkably increased and oil flow impact is dispersed by optimizing the axial height of the columnar filter screen and the collaborative layout of the planar filter screen, and the problem of local rapid blockage of a traditional planar filter screen is avoided while high filtering precision is maintained; the impact of oil pressure fluctuation on the oil unloading pump is effectively relieved, the stable operation period of equipment is prolonged, and meanwhile the mechanical failure risk caused by frequent blockage is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of oil unloading devices, and in particular to an oil unloading device with a low failure rate. Background Technology

[0002] During daily operation, the oil unloading platform's unloading device may experience problems such as overheating of the unloading pump motor, oil seal leakage, abnormal vibration and noise from the unloading pump, and failure to produce oil. This causes the oil level in the unloading pool to rise instead of fall as the unloading time is delayed, increasing the failure rate of the unloading pump, significantly reducing the safety of unloading, endangering personnel safety, slowing down the unloading progress, and increasing heating gas and maintenance costs. Systemic fault tracing analysis revealed that traditional filter screens, due to their planar single-layer structure, are easily clogged by asphalt impurities in the oil, causing a decrease in oil flow. This forces the unloading pump to be under overload for a long time, which in turn induces a chain reaction such as mechanical seal failure and abnormal bearing wear.

[0003] To overcome this technical bottleneck, it is urgent to build a high-efficiency filtration system with anti-clogging characteristics. By optimizing the structural design and maintenance mode of the filter components, the smoothness of the oil circuit can be dynamically maintained, thereby ensuring that the unloading pump operates continuously and stably under rated conditions, fundamentally reducing the frequency of unplanned shutdowns, and simultaneously achieving multiple goals such as safety risk prevention and control, energy cost reduction and equipment life extension. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an oil unloading device with a low failure rate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a low-failure-rate oil unloading device, comprising a coarse filter box, an oil unloading pump, and an oil unloading truck. The coarse filter box is disposed between the oil unloading truck and the oil unloading pump. An oil outlet pipe is fixedly connected to the lower wall of the coarse filter box. An upper cover is slidably connected to the coarse filter box. A lifting structure for driving the upper cover to rise and fall is provided between the upper cover and the coarse filter box. An oil inlet pipe is fixedly connected to the upper wall of the upper cover. An upper housing is fixedly connected to the lower wall of the upper housing. An insertion end is fixedly connected to the lower wall of the upper housing. A filter box is slidably connected to the inner wall of the coarse filter box. The filter box is slidably connected to the inner wall of the coarse filter box through a sliding structure. The left-right length of the filter box is two-thirds of the left-right length of the inner cavity of the coarse filter box. The interior of the filter box is divided into two filter chambers by a partition. A filter frame is detachably installed in each filter chamber. The insertion end is slidably connected to the filter frame of any filter chamber through a sealing structure. Each set of filter chambers is provided with a filter structure for filtering impurities in the oil.

[0006] As a further description of the above technical solution:

[0007] The lifting structure includes two sets of connecting plates, which are fixedly connected to the front and rear ends of the upper cover, respectively. Two sets of guide columns are fixedly connected to the lower walls of the two sets of connecting plates. Two sets of sliding seats are fixedly connected to the front and rear side walls of the coarse filter box. The ends of the four sets of guide columns away from the connecting plates are slidably connected to the inner side wall of a set of sliding seats. A set of cylinders is fixedly connected to the front and rear side walls of the coarse filter box. The extension shaft ends of the two sets of cylinders are fixedly connected to the lower wall of a set of connecting plates, respectively.

[0008] As a further description of the above technical solution:

[0009] The sliding structure includes two sets of slide rails and multiple sets of sliders. The two sets of slide rails are fixedly connected to the inner front wall and inner rear wall of the coarse filter box, respectively. The length direction of the two sets of slide rails is parallel to the left and right direction of the inner cavity of the coarse filter box. The multiple sets of sliders are fixedly connected to the front wall and rear wall of the filter box, respectively. The filter box is slidably connected to the slide rails through the sliders.

[0010] As a further description of the above technical solution:

[0011] The filtration structure includes a planar filter and a columnar filter. Openings are provided on the lower wall of the filtration chamber and the lower inner wall of the filter frame. The planar filter is fixedly connected to the lower inner wall of the filter frame and completely covers the openings. The columnar filter is located on the upper wall of the planar filter and is positioned at the center of the planar filter's top projection. The axis of the columnar filter is perpendicular to the upper wall of the planar filter, and the axial height of the columnar filter is 60%-70% of the height of the coarse filter chamber.

[0012] As a further description of the above technical solution:

[0013] The filter frame is provided with handle holes on both the front and rear side walls and near the top wall for easy lifting.

[0014] As a further description of the above technical solution:

[0015] The front wall of the oil inlet pipe is equipped with a valve for controlling the opening and closing of the oil inlet pipe.

[0016] As a further description of the above technical solution:

[0017] The bottom of the coarse filter box is fixedly connected to multiple sets of support feet.

[0018] This utility model has the following beneficial effects:

[0019] 1. Compared with existing technologies, this low-failure-rate oil unloading device, by setting up dual filter chambers and detachable filter frames, can achieve rapid switching and offline cleaning of filter chambers without stopping the machine. It not only solves the industry pain point of oil circuit interruption caused by blockage in single-chamber filter structures, but also simplifies the maintenance process of filter units through modular design, significantly reducing the frequency of manual intervention and the risk of contact with high-temperature oil products, thus fundamentally ensuring the continuity and operational safety of oil unloading operations.

[0020] 2. Compared with existing technologies, this low-failure-rate unloading device significantly increases the impurity retention capacity and disperses oil flow impact by optimizing the axial height of the columnar filter screen and the coordinated layout of the planar filter screen. While maintaining high filtration accuracy, it avoids the problem of local rapid clogging of traditional planar filters, effectively alleviates the impact of oil pressure fluctuations on the unloading pump, extends the stable operation cycle of the equipment, and reduces the risk of mechanical failure caused by frequent clogging. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an oil unloading device with a low failure rate proposed in this utility model.

[0022] Figure 2 This is a top view schematic diagram of the internal structure of the filter box of an oil unloading device with a low failure rate proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the upper cover, upper housing, and insertion end connection structure of an oil unloading device with a low failure rate proposed in this utility model.

[0024] Legend:

[0025] 1. Base; 2. Coarse filter box; 3. Oil outlet pipe; 4. Top cover; 5. Oil inlet pipe; 6. Valve; 7. Slide rail; 8. Filter box; 9. Filter frame; 10. Handle hole; 11. Flat filter screen; 12. Columnar filter screen; 13. Connecting plate; 14. Sliding seat; 15. Guide column; 16. Cylinder; 17. Slider; 18. Upper box body; 19. Insertion end. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1 to 3The present invention provides an oil unloading device with a low failure rate: including a coarse filter box 2, an oil unloading pump and an oil unloading truck. The coarse filter box 2 is set between the oil unloading truck and the oil unloading pump. An oil outlet pipe 3 is fixedly connected to the lower wall of the coarse filter box 2. An upper cover 4 is slidably connected to the coarse filter box 2. An oil inlet pipe 5 is fixedly connected to the upper wall of the upper cover 4. A valve 6 for controlling the opening and closing of the oil inlet pipe 5 is provided on the front wall of the oil inlet pipe 5. Multiple sets of support feet 1 are fixedly connected to the bottom of the coarse filter box 2.

[0028] To achieve precise lifting control of the upper cover 4 and the coarse filter box 2 to adapt to different working conditions, a lifting structure for driving the upper cover 4 to lift is provided between the upper cover 4 and the coarse filter box 2. The lifting structure includes two sets of connecting plates 13, which are fixedly connected to the front and rear ends of the upper cover 4 respectively. Two sets of guide columns 15 are fixedly connected to the lower walls of the two sets of connecting plates 13. Two sets of sliding seats 14 are fixedly connected to the front and rear side walls of the coarse filter box 2. The ends of the four sets of guide columns 15 away from the connecting plates 13 are slidably connected to the inner side wall of a set of sliding seats 14 respectively. A set of cylinders 16 is fixedly connected to the front and rear side walls of the coarse filter box 2. The ends of the extension shafts of the two sets of cylinders 16 are fixedly connected to the lower wall of a set of connecting plates 13 respectively.

[0029] When the cylinder 16 drives the connecting plate 13 to rise and fall, the guide post 15 slides vertically along the inner wall of the sliding seat 14 to ensure that the sealing surfaces of the upper cover 4 and the coarse filter box 2 are always parallel and aligned, thereby improving the insertion accuracy of the subsequent insertion end 19 and the filter chamber.

[0030] To enable the filter box 8 to slide laterally within the coarse filter box 2 to switch filter chambers, an upper box body 18 is fixedly connected to the lower wall of the upper cover 4, and an insertion end 19 is fixedly connected to the lower wall of the upper box body 18. The filter box 8 is slidably connected to the inner wall of the coarse filter box 2. The filter box 8 and the inner wall of the coarse filter box 2 are slidably connected through a sliding structure. The sliding structure includes two sets of slide rails 7 and multiple sets of sliders 17. The two sets of slide rails 7 are fixedly connected to the front and rear inner walls of the coarse filter box 2, respectively. The length direction of the two sets of slide rails 7 is parallel to the left and right direction of the inner cavity of the coarse filter box 2. The multiple sets of sliders 17 are fixedly connected to the front and rear walls of the filter box 8, respectively. The filter box 8 is slidably connected to the slide rails 7 through the sliders 17.

[0031] When it is necessary to switch the filter chamber, the filter box 8 moves laterally along the slide rail 7 to the corresponding position of the spare filter chamber, and the insertion end 19 is slidably connected to the filter frame 9 of the new filter chamber through the sealing structure to ensure that the oil always flows through the effective filtration path, avoids the interruption of the oil circuit due to the switching of the filter chamber, and thus maintains the continuity of the unloading operation.

[0032] To optimize the impurity retention capacity of the filter structure and balance the throughput and anti-clogging performance, the length of the filter box 8 in the left-right direction is two-thirds of the length of the inner cavity of the coarse filter box 2. The filter box 8 is divided into two filter chambers by a partition. A filter frame 9 is detachably installed in each filter chamber. The insertion end 19 is slidably connected to the filter frame 9 of any filter chamber through a sealing structure. Each filter chamber is equipped with a filter structure for filtering impurities in the oil. The filter structure includes a flat filter screen 11 and a columnar filter screen 12. Openings are provided on the lower wall of the filter chamber and the lower inner wall of the filter frame 9. The flat filter screen 11 is fixedly connected to the lower inner wall of the filter frame 9 and completely covers the opening. The columnar filter screen 12 is set on the upper wall of the flat filter screen 11 and is located at the center of the top projection of the flat filter screen 11. The axis of the columnar filter screen 12 is perpendicular to the upper wall of the flat filter screen 11. The axial height of the columnar filter screen 12 is 65% of the height of the inner cavity of the coarse filter box 2.

[0033] When the oil enters the filter chamber through the insertion end 19, the columnar filter screen 12 increases the contact area between the oil flow and the filter screen by extending its axial height, so that impurities are deposited in a gradient on the surface of the columnar filter screen 12 and the impact force of the oil flow is dispersed. The flat filter screen 11 intercepts the residual impurities that are not intercepted by the columnar filter screen 12. The synergistic effect of the two-stage filtration significantly extends the filter screen clogging cycle, while avoiding the problem of sudden drop in throughput caused by local overload of the flat filter screen 11.

[0034] In order to simplify the maintenance of the filter frame 9 and reduce the risk of contact with high-temperature oil, the front and rear side walls of the filter frame 9 and the position near the upper wall are provided with handle holes 10 for easy lifting of the filter frame 9.

[0035] When the filter frame 9 needs to be cleaned offline, the operator can directly hoist the filter frame 9 to the cleaning area through the handle hole 10 without disassembling the filter box 8 or contacting the high-temperature oil in the coarse filter box 2, which shortens the maintenance time and reduces operational safety hazards.

[0036] Working principle: When cylinder 16 drives connecting plate 13 to rise and fall, guide post 15 slides vertically along the inner wall of sliding seat 14, ensuring that the sealing surfaces of upper cover 4 and coarse filter box 2 remain parallel and aligned, improving the insertion accuracy of subsequent insertion end 19 and filter chamber; when it is necessary to switch filter chambers, filter box 8 moves laterally along slide rail 7 to the corresponding position of standby filter chamber, and insertion end 19 slides to connect with filter frame 9 of new filter chamber through sealing structure, ensuring that oil always flows through effective filtration path, avoiding oil circuit interruption due to filter chamber switching, thereby maintaining the continuity of oil unloading operation; when oil enters filter chamber through insertion end 19... During operation, the columnar filter screen 12 increases the contact area between the oil flow and the filter screen by extending its axial height, causing impurities to be deposited in a gradient on the surface of the columnar filter screen 12 and dispersing the impact force of the oil flow. The flat filter screen 11 intercepts the residual impurities that are not intercepted by the columnar filter screen 12. The synergistic effect of the two-stage filtration significantly extends the filter screen clogging cycle, while avoiding the problem of sudden drop in throughput caused by local overload of the flat filter screen 11. When the filter frame 9 needs to be cleaned offline, the operator can directly hoist the filter frame 9 to the cleaning area through the handle hole 10 without disassembling the filter box 8 or contacting the high-temperature oil in the coarse filter box 2, which shortens the maintenance time and reduces operational safety hazards.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-failure-rate oil unloading device, characterized in that: The system includes a coarse filter box (2), an oil unloading pump, and an oil unloading truck. The coarse filter box (2) is located between the oil unloading truck and the oil unloading pump. An oil outlet pipe (3) is fixedly connected to the lower wall of the coarse filter box (2). An upper cover (4) is slidably connected to the coarse filter box (2). A lifting structure for driving the upper cover (4) to rise and fall is provided between the upper cover (4) and the coarse filter box (2). An oil inlet pipe (5) is fixedly connected to the upper wall of the upper cover (4). An upper housing (18) is fixedly connected to the lower wall of the upper cover (4). An insertion end (19) is fixedly connected to the lower wall of the upper housing (18). A filter box (8) is slidably connected to the inner wall of the filter box (2). The filter box (8) is slidably connected to the inner wall of the coarse filter box (2) through a sliding structure. The length of the filter box (8) in the left and right direction is two-thirds of the length of the inner cavity of the coarse filter box (2). The filter box (8) is divided into two filter chambers by a partition. A filter frame (9) is detachably installed in each filter chamber. The insertion end (19) is slidably connected to the filter frame (9) of any filter chamber through a sealing structure. Each set of filter chambers is provided with a filter structure for filtering impurities in the oil.

2. The low-failure-rate oil unloading device according to claim 1, characterized in that: The lifting structure includes two sets of connecting plates (13), which are fixedly connected to the front and rear ends of the upper cover (4). Two sets of guide columns (15) are fixedly connected to the lower walls of the two sets of connecting plates (13). Two sets of sliding seats (14) are fixedly connected to the front and rear side walls of the coarse filter box (2). The ends of the four sets of guide columns (15) away from the connecting plates (13) are slidably connected to the inner side wall of a set of sliding seats (14). A set of cylinders (16) are fixedly connected to the front and rear side walls of the coarse filter box (2). The ends of the extension shafts of the two sets of cylinders (16) are fixedly connected to the lower walls of a set of connecting plates (13).

3. The low-failure-rate oil unloading device according to claim 1, characterized in that: The sliding structure includes two sets of slide rails (7) and multiple sets of sliders (17). The two sets of slide rails (7) are fixedly connected to the inner front wall and inner rear wall of the coarse filter box (2), respectively. The length direction of the two sets of slide rails (7) is parallel to the left and right direction of the inner cavity of the coarse filter box (2). The multiple sets of sliders (17) are fixedly connected to the front wall and rear wall of the filter box (8), respectively. The filter box (8) is slidably connected to the slide rails (7) through the sliders (17).

4. The low-failure-rate oil unloading device according to claim 1, characterized in that: The filter structure includes a planar filter (11) and a columnar filter (12). The lower wall of the filter chamber and the lower inner wall of the filter frame (9) are provided with openings. The planar filter (11) is fixedly connected to the lower inner wall of the filter frame (9) and completely covers the openings. The columnar filter (12) is set on the upper wall of the planar filter (11) and is located at the center of the planar filter (11) in a top view. The axis of the columnar filter (12) is perpendicular to the upper wall of the planar filter (11). The axial height of the columnar filter (12) is 60%-70% of the height of the inner cavity of the coarse filter box (2).

5. The oil unloading device with low failure rate according to claim 1, characterized in that: The filter frame (9) has handle holes (10) on both the front and rear side walls and near the top wall for easy lifting.

6. The oil unloading device with low failure rate according to claim 1, characterized in that: The front wall of the oil inlet pipe (5) is provided with a valve (6) for controlling the opening and closing of the oil inlet pipe (5).

7. The oil unloading device with low failure rate according to claim 1, characterized in that: The bottom of the coarse filter box (2) is fixedly connected with multiple sets of support feet (1).

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