An automatic refueling device for vacuum pumps

Abstract

This utility model discloses an automatic oil filling device for vacuum pumps, belonging to the field of vacuum pump oil filling technology. It includes a housing, inside which an oil pump, a flow switch, a first solenoid valve, a second solenoid valve, and a filter are fixedly installed. An oil outlet is fixedly inserted through the front end of the housing, and the oil outlet, the first solenoid valve, the flow switch, and the oil pump outlet are connected via a pipeline system. An oil inlet is fixedly inserted through the rear end of the housing, and the oil inlet, the second solenoid valve, the filter, and the oil pump inlet are connected via an oil delivery pipe. It features adjustable oil filling volume and speed, increasing the versatility of the automatic oil filling device for vacuum pumps, providing stable oil filling volume, and significantly reducing oil filling process costs.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump refueling technology, specifically to an automatic vacuum pump refueling device. Background Technology

[0002] Currently, in the production and maintenance of vacuum pumps, lubricating oil filling is primarily done manually. This traditional manual method has the following problems: First, it is difficult to accurately control the amount of oil added manually, easily resulting in overfilling or underfilling; second, manual filling is slow and easily spills lubricating oil onto the ground, causing slippery surfaces and wasting costs. Therefore, with continuous technological advancements, automatic lubrication devices are now available for filling.

[0003] For example, an automatic oil filling device for a vacuum pump, disclosed in patent CN210920911U, is described. This utility model incorporates an oil cup, a float, a slide bar, a connecting plate, a contact block, a lower limit switch, an upper limit switch, and a solenoid check valve. When the oil level in the oil cup is too low, the float descends with the oil level and causes the contact block to engage with the lower limit switch, thereby controlling and opening the solenoid check valve. When the oil level in the oil cup rises, the contact block engages with the upper limit switch, thereby controlling and closing the solenoid check valve. This device enables automatic oil replenishment, has a simple structure, low manufacturing cost, and can significantly reduce the number of times workers need to refill the pump, thus improving its performance.

[0004] However, while existing automatic vacuum pump refueling devices can automatically refuel vacuum pumps, the refueling amount and speed cannot be precisely controlled, leading to waste. Therefore, this invention provides an automatic vacuum pump refueling device that can refuel efficiently and accurately. Utility Model Content

[0005] Therefore, this utility model provides an automatic oiling device for vacuum pumps to solve the problem that the existing vacuum pump oiling process is inefficient and easily leads to waste.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An automatic refueling device for a vacuum pump includes a housing. Inside the housing, an oil pump, a flow switch, a first solenoid valve, a second solenoid valve, and a filter are fixedly installed. An oil outlet is fixedly inserted through the front end of the housing. The oil outlet, the first solenoid valve, the flow switch, and the oil outlet of the oil pump are connected through a pipeline system. An oil inlet is fixedly inserted through the rear end of the housing. The oil inlet, the second solenoid valve, the filter, and the oil inlet of the oil pump are connected through an oil delivery pipe.

[0007] Furthermore, a panel control system is fixedly provided at the front end of the housing, and the oil pump, flow switch, first solenoid valve and second solenoid valve are all connected to the output end of the panel control system.

[0008] Furthermore, the outer casing includes a base, with side plates hinged to both sides of the top of the base, a rear plate hinged to the rear side of the top of the base, and a cover plate hinged to the top of the rear plate. The cover plate is locked to the base by a lock.

[0009] Furthermore, vertical plates are fixedly provided on the inner wall of the rear plate and the inner walls of the two side plates, and each vertical plate is fixed to the base by a first bolt.

[0010] Furthermore, two arc-shaped inserts are fixedly provided on both sides of the bottom of the cover plate, and arc-shaped slots that match the arc-shaped inserts are opened on the top of the two side plates. By using the arc-shaped inserts and arc-shaped slots to cooperate, the combination stability between the cover plate and the side plates can be improved.

[0011] Furthermore, the front end of the base and the rear end of the rear plate are detachably connected to collection boxes. The top of each collection box is provided with a protective cover. The front end of the base and the rear end of the rear plate are provided with sliding grooves. A slider is slidably installed inside each of the two sliding grooves. The slider is fixed to the protective cover. The height of the protective cover can be easily adjusted by using the slider and the sliding groove.

[0012] Furthermore, the top of each slider is threaded with a second bolt, and the inner wall of each of the two slides is provided with threaded holes that are compatible with the second bolts. The sliders are fixed by the second bolts to prevent the protective cover from affecting the connection and use of the oil inlet and outlet nozzles.

[0013] Furthermore, each of the four corners of the base is fixed with a universal wheel equipped with a brake, and the top of the cover plate and the outer walls of the two side plates are fixed with handles. The universal wheels make it easier for workers to move the outer shell, thereby improving the flexibility of the outer shell.

[0014] This utility model has the following advantages: This invention achieves automatic refueling of a vacuum pump through a refueling pipeline consisting of an oil delivery pipe, an oil injection pump, and a pipeline system. It uses a flow switch to precisely control the lubricating oil flow and is equipped with a filter to remove impurities from the oil, effectively preventing the oil injection pump and vacuum pump from becoming clogged, thus ensuring stable operation of the refueling process. At the same time, the oil injection volume and oil injection speed are adjustable, increasing the versatility of the automatic vacuum pump refueling device. The oil injection volume is stable, greatly saving the cost of the oil injection process.

[0015] The outer shell consists of a base, two side plates, a rear plate, and a cover plate. After loosening several first bolts, the cover plate, rear plate, and side plates can be opened, exposing the parts on the base, which greatly facilitates inspection and maintenance. In addition, when the refueling device is not in use, the protective cover and collection box can effectively protect the oil inlet and outlet from damage and contamination, ensuring their subsequent refueling function. At the same time, when changing the oil drum, the collection box can catch the lubricating oil dripping from the inside of the oil inlet, which not only prevents the lubricating oil from contaminating the ground, but also realizes resource recycling and avoids waste. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of the overall structure of Example 1; Figure 2 This is a schematic diagram of the internal structure of the outer shell in Embodiment 1; Figure 3 This is a partial structural diagram of Example 2; Figure 4 This is a rear view of the overall structure of Embodiment 1; Figure 5 This is a system diagram.

[0019] In the diagram: 1. Outer shell; 101. Base; 102. Side plate; 103. Rear plate; 104. Cover plate; 2. Oil pump; 3. Flow switch; 4. First solenoid valve; 5. Second solenoid valve; 6. Filter; 7. Oil outlet; 8. Piping system; 9. Oil inlet; 10. Oil delivery pipe; 11. Panel control system; 12. Vertical plate; 13. First bolt; 14. Arc-shaped insert; 15. Arc-shaped slot; 16. Collection box; 17. Protective cover; 18. Slide groove; 19. Slider; 20. Second bolt; 21. Threaded hole; 22. Caster wheel; 23. Handle. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Example 1

[0022] Refer to the instruction manual Figures 1-5 This utility model provides an automatic refueling device for a vacuum pump, including a housing 1. The housing 1 is made of 304 stainless steel plate, which has high strength, high corrosion resistance, and long service life. Inside the housing 1, an oil pump 2, a flow switch 3, a first solenoid valve 4, a second solenoid valve 5, and a filter 6 are fixedly installed. An oil outlet 7 is fixedly inserted through the front end of the housing 1. The oil outlet 7, the first solenoid valve 4, the flow switch 3, and the oil outlet of the oil pump 2 are connected through a pipeline system 8. An oil inlet 9 is fixedly inserted through the rear end of the housing 1. The oil inlet 9, the second solenoid valve 5, the filter 6, and the oil inlet of the oil pump 2 are connected through an oil delivery pipe 10.

[0023] Among them, the oil pump 2 is a mechanical device used to forcibly transport lubricating oil or other fluid media. Its core function is to transport the medium from the oil storage chamber to equipment components that require lubrication, cooling, or pressure supply. The flow switch 3 is an automatic control element that triggers action based on changes in fluid flow rate. Its core function is to monitor the flow status of fluids (liquid, gas, steam, etc.) in pipelines or systems in real time. The first solenoid valve 4 and the second solenoid valve 5 are electromagnetically controlled industrial devices and are basic automation components used to control fluids. The solenoid valve has a sealed chamber with a piston in the middle and electromagnets on both sides. When the coil of the electromagnet is energized, it generates electromagnetic force, attracting the valve body to move and opening or closing different oil discharge holes. Since the oil inlet is always open, hydraulic oil enters different oil discharge pipes, pushing the piston of the oil cylinder, which in turn drives the piston rod and mechanical device to move. The mechanical movement is controlled by controlling the current flow. Filter 6 is a device used to filter impurities in lubricating oil to ensure its cleanliness and protect the normal operation of equipment. Lubricating oil filters primarily intercept impurities through the microporous structure of the filter element or screen. When lubricating oil passes through the filter element or screen under pressure, impurities are blocked, while clean lubricating oil passes through and flows out. Some filters also have a bypass valve. When the filter element becomes clogged, increasing resistance and decreasing flow rate, the bypass valve opens, allowing oil to flow around the filter element to ensure oil supply. Since these are existing technologies, they will not be elaborated upon further here.

[0024] The front end of the outer casing 1 is fixedly equipped with a panel control system 11. The oil pump 2, flow switch 3, first solenoid valve 4 and second solenoid valve 5 are all connected to the output end of the panel control system 11. The panel control system 11 is equipped with a start button, a pause button, a resume button, a flow button and an emergency stop button.

[0025] In actual operation, the operator first places the oil drum behind the outer casing 1 and the vacuum pump to be refilled in front of the outer casing 1. Then, the oil drum is connected to the oil inlet 9 and the vacuum pump is connected to the oil outlet 7. The start button on the control panel is pressed, and the oil pump 2 starts working, drawing lubricating oil from the oil drum. The lubricating oil is delivered to the oil outlet 7 via the oil supply pipe 10, the oil pump 2, and the pipeline system 8, and finally injected into the vacuum pump, completing the automatic refilling. During the refilling process, the filter 6 on the oil supply pipe 10 can filter the lubricating oil, effectively preventing fine particles in the oil from clogging the oil pump 2 and the vacuum pump. At the same time, the operator can adjust the flow switch 3 using the flow key on the panel to precisely control the amount of oil added each time. Moreover, when the lubricating oil in the oil drum is used up, simply press the pause button to stop the oil pump 2, replace it with a new oil drum, and then press the resume button to continue refilling.

[0026] Example 2

[0027] Unlike Example 1, as Figure 3 As shown, a four-way valve can be fixedly installed at the oil inlet of the oil pump 2, and two oil inlets 9 and two oil outlets 7 can be set. One oil inlet 9 is connected to the oil supply pipe 10 in Embodiment 1, and the other oil inlet 9 is connected to the four-way valve through a solenoid valve as an oil inlet pipeline. One oil outlet 7 is connected to the pipeline system 8 in Embodiment 1, and the other oil outlet 7 is connected to the four-way valve through a solenoid valve as an oil outlet pipeline. A filter 6 can also be added to the oil inlet pipeline and the oil outlet pipeline for filtration, thereby increasing the oil intake of the oil pump 2 and connecting multiple oil tanks for refueling.

[0028] Example 3

[0029] Refer to the instruction manual Figure 1 , Figure 2 and Figure 4 The outer casing 1 includes a base 101, with side plates 102 hinged to both sides of the top of the base 101, a rear plate 103 hinged to the rear side of the top of the base 101, and a cover plate 104 hinged to the top of the rear plate 103. The cover plate 104 is locked to the base 101 by a lock. Vertical plates 12 are fixedly provided on the inner wall of the rear plate 103 and the inner walls of the two side plates 102. Each vertical plate 12 is fixed to the base 101 by a first bolt 13.

[0030] Collection boxes 16 are detachably connected to the front end of the base 101 and the rear end of the rear plate 103. Each collection box 16 has a protective cover 17 on its top. Each base 101 has a sliding groove 18 on its front end and the rear end of the rear plate 103. Each sliding groove 18 has a slider 19 sliding inside it. The slider 19 is fixed to the protective cover 17. Each slider 19 has a second bolt 20 threadedly connected to its top. Each sliding groove 18 has a threaded hole 21 that matches the second bolt 20 on its inner wall.

[0031] The outer casing 1 consists of a base 101, two side plates 102, a rear plate 103, and a cover plate 104. Operators can first open the cover plate 104, then loosen the first bolts 13 on the inner walls of the rear plate 103 and the side plates 102, and then open the side plates 102 and the rear plate 103 to expose the parts on the base 101, facilitating quick maintenance. After use, operators can loosen the second bolt 20 on the slider 19, allowing the protective cover 17 to fall onto the collection box 16, and then tighten the second bolt 20. The protective cover 17, in conjunction with the collection box 16, protects the inlet nozzle 9 and outlet nozzle 7, preventing damage and contamination that could affect subsequent refueling. Furthermore, when replacing the oil drum, operators can separate the oil drum from the inlet nozzle 9, and the collection box 16 can collect any dripping lubricating oil, preventing it from falling onto the ground and causing contamination, and also recovering the lubricating oil to avoid waste.

[0032] Furthermore, two arc-shaped inserts 14 are fixedly provided on both sides of the bottom of the cover plate 104, and arc-shaped slots 15 adapted to the arc-shaped inserts 14 are provided on the top of both side plates 102. By using the arc-shaped inserts 14 and the arc-shaped slots 15 to cooperate, the combination stability between the cover plate 104 and the side plates 102 can be improved.

[0033] The base 101 is fixed with universal wheels 22 with brakes at all four corners of the bottom, and handles 23 are fixed to the top of the cover plate 104 and the outer walls of the two side plates 102. The universal wheels 22 make it easy for staff to push the outer shell 1 to move, thereby improving the flexibility of the outer shell 1.

[0034] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An automatic oiling device for a vacuum pump, comprising a housing (1), characterized in that, The housing (1) is equipped with an oil pump (2), a flow switch (3), a first solenoid valve (4), a second solenoid valve (5), and a filter (6). An oil outlet (7) is fixedly inserted through the front end of the outer shell (1). The oil outlet (7), the first solenoid valve (4), the flow switch (3) and the oil outlet of the oil pump (2) are connected through a pipeline system (8). The rear end of the outer shell (1) is fixedly connected to an oil inlet (9), and the oil inlet (9), the second solenoid valve (5), the filter (6) and the oil inlet of the oil pump (2) are connected by an oil delivery pipe (10).

2. The automatic oiling device for a vacuum pump as described in claim 1, characterized in that, The front end of the housing (1) is fixedly provided with a panel control system (11), and the oil pump (2), flow switch (3), first solenoid valve (4) and second solenoid valve (5) are all connected to the output end of the panel control system (11).

3. The automatic oiling device for a vacuum pump as described in claim 1, characterized in that, The outer casing (1) includes a base (101), with side plates (102) hinged to both sides of the top of the base (101), a rear plate (103) hinged to the rear side of the top of the base (101), and a cover plate (104) hinged to the top of the rear plate (103). The cover plate (104) is locked to the base (101) by a lock.

4. The automatic oiling device for a vacuum pump as described in claim 3, characterized in that, The inner wall of the rear plate (103) and the inner walls of the two side plates (102) are all fixed with vertical plates (12), and each vertical plate (12) is fixed to the base (101) by a first bolt (13).

5. The automatic oiling device for a vacuum pump as described in claim 3, characterized in that, The cover plate (104) has two arc-shaped inserts (14) fixed on both sides of its bottom, and the top of the two side plates (102) has arc-shaped slots (15) that are compatible with the arc-shaped inserts (14).

6. The automatic oiling device for a vacuum pump as described in claim 3, characterized in that, The front end of the base (101) and the rear end of the back plate (103) are detachably connected to collection boxes (16). The top of the two collection boxes (16) is provided with protective covers (17). The front end of the base (101) and the rear end of the back plate (103) are provided with sliding grooves (18). The sliding sliders (19) are slidably provided inside the two sliding grooves (18). The sliders (19) are fixed to the protective covers (17).

7. The automatic oiling device for a vacuum pump as described in claim 6, characterized in that, The top of each slider (19) is threaded with a second bolt (20), and the inner wall of each of the two grooves (18) is provided with a threaded hole (21) that matches the second bolt (20).

8. The automatic oiling device for a vacuum pump as described in claim 3, characterized in that, The base (101) is fixed with universal wheels (22) with brakes at the four corners of the bottom, and handles (23) are fixed on the top of the cover plate (104) and the outer walls of the two side plates (102).

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