Self-flow oil supplementing system for titanium sponge vacuum pump

Abstract

The invention discloses a self-flow oil supplementing system, particularly discloses a self-flow oil supplementing system for a titanium sponge vacuum pump, and belongs to the technical field of design and manufacturing of metallurgical production equipment repair and maintenance process equipment. The self-flow oil supplementing system for the titanium sponge vacuum pump can greatly reduce manual participation and remarkably improve the oil supplementing efficiency. The self-flow oil supplementing system comprises a plurality of vacuum pumps arranged in a pump plant, the self-flow oil supplementing system further comprises a high-position oil storage device, an oil supplementing conveying mechanism and an oil discharging recycling assembly, the oil inlet end of the oil supplementing conveying mechanism is connected with the high-position oil storage device, the oil outlet end of the oil supplementing conveying mechanism is connected with the vacuum pumps, and the oil discharging recycling assembly is connected with the vacuum pumps. Oil discharged by each vacuum pump is recycled through an oil discharge recycling assembly arranged on the foundation on the outer side of the corresponding vacuum pump.

Description

Technical Field

[0001] The invention relates to a self-flowing oil replenishing system, in particular to a self-flowing oil replenishing system for a sponge titanium vacuum pump, and belongs to the technical field of design and manufacturing of repair and maintenance process equipment for metallurgical production equipment. Background Art

[0002] The existing vacuum pump refueling and oil draining methods are as follows: the oil replenishing (changing) tools are hand-cranked oil pumps and trolleys. According to the production capacity of 7.5 furnaces / day, the weekly oil replenishment is (7.5×90÷2+7.5×25)×7=3675 liters. Three people are required to perform the oil replenishment operation in each shift. Three shifts a day means nine workers, which consumes a lot of manpower and has high labor intensity. The oil is drained by collecting it in a small bucket and then putting it into a large oil barrel and pushing it to the designated location, which is time-consuming and labor-intensive. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a gravity oil replenishment system for a titanium sponge vacuum pump which can greatly reduce manual participation and significantly improve the oil replenishment efficiency.

[0004] The technical solution adopted to solve the above technical problems is: a gravity oil replenishment system for a sponge titanium vacuum pump, including multiple vacuum pumps arranged in a pump plant, the gravity oil replenishment system also includes a high-level oil storage device, an oil replenishment conveying mechanism and an oil discharge recovery component, the oil inlet end of the oil replenishment conveying mechanism is connected to the high-level oil storage device, and the oil outlet end of the oil replenishment conveying mechanism is respectively connected to each vacuum pump, and the oil discharged from each vacuum pump is recovered through an oil discharge recovery component arranged on the foundation outside the corresponding vacuum pump.

[0005] Furthermore, the oil recovery component includes an oil collection ditch, an oil collection pit and an oil recovery pump. An oil collection ditch connected to the oil collection pit is arranged on the foundation of the oil discharge port of each vacuum pump. The oil collection pit is arranged at a specified position in the pump plant, and the oil collected in the oil collection pit is pumped out of the oil collection pit by the oil recovery pump.

[0006] The preferred embodiment of the above scheme is that the oil collection ditch is composed of channel steel arranged on the foundation of the oil outlet of each vacuum pump, and the oil recovery assembly also includes an oil storage barrel, and the oil output end of the oil recovery pump is connected to the oil storage barrel.

[0007] Furthermore, the high-level oil storage device includes an oil storage tank and a load-bearing support structure. The oil storage tank is arranged at a specified position of the pump plant through the load-bearing support structure, and the oil inlet end of the oil replenishment and delivery mechanism is connected to the oil storage tank.

[0008] A preferred embodiment of the above scheme is that a manhole, a vent pipe, an oil filling port and a radar level gauge are provided on the top of the oil storage tank, a C-type connecting tube level gauge is provided at one end of the oil storage tank, an oil outlet, a sewage outlet and a tank saddle are provided at the bottom of the oil storage tank, the oil storage tank is arranged on the load-bearing support structure through the tank saddle, the manhole is detachably closed by a manhole cover, the oil inlet end of the oil replenishment and delivery mechanism is connected to the oil outlet, the sewage outlet is opened or closed by a sewage shut-off valve, and the oil filling port is connected to the external oil filling pipe through a flange.

[0009] Furthermore, the load-bearing support structure includes a load-bearing truss, an extended platform, a rain shelter, a guardrail and a ladder. The oil storage tank is arranged at a specified position on the top of the load-bearing truss through a tank saddle. Extended platforms are arranged on the left and right sides of the load-bearing truss, respectively. Rain shelters are provided on the top of the load-bearing truss and the extended platform, respectively. Guardrails are arranged around the platform formed by the load-bearing truss and the extended platform, and the ladder is connected to the guardrail platform on the right.

[0010] The preferred embodiment of the above scheme is that the oil replenishment and delivery mechanism includes a delivery pipeline network, a control valve group and an oil replenishment hose. The oil input end of the delivery pipeline network is connected to the oil outlet at the bottom of the oil storage tank. The number of oil replenishment hoses is equivalent to the number of vacuum pumps. Each oil replenishment hose corresponds to each vacuum pump and is connected to each vacuum pump in cooperation with the corresponding control valve group.

[0011] Furthermore, the transmission pipeline network includes an oil main pipe, an oil branch pipe and an oil distribution pipe. The oil main pipe is arranged in a pump plant above the vacuum pump along the installation direction of the vacuum pump. The oil branch pipes located in the same horizontal plane are connected to the oil main pipe in sequence along the length direction of the oil main pipe. The oil distribution pipes whose number is equal to the number of vacuum pumps are connected to the corresponding oil branch pipes in the vertical direction. The control valve group includes a plurality of stop valves whose number is equal to the number of oil distribution pipes. A stop valve is arranged at the end of each oil distribution pipe, and the oil replenishment hoses are connected to the corresponding oil distribution pipes through each stop valve one by one.

[0012] The preferred embodiment of the above scheme is that the vertical height of the interconnected oil delivery main pipe and the oil delivery branch pipe from the vacuum pump is not less than 1.5m, and a control valve is also provided on the input end of the oil delivery main pipe.

[0013] Furthermore, a pump-side cofferdam is respectively arranged on the foundation near the oil discharge port of each vacuum pump, and the input end of the oil discharge collection ditch formed by the channel steel is connected to the pump-side cofferdam.

[0014] The beneficial effects of the present invention are as follows: the technical solution provided by the present application is based on multiple vacuum pumps arranged in a pump plant, and the gravity oil replenishment system of the present application is formed by adding a high-level oil storage device, an oil replenishment conveying mechanism and an oil discharge recovery component, and the oil inlet end of the oil replenishment conveying mechanism is connected to the high-level oil storage device, and the oil outlet end of the oil replenishment conveying mechanism is respectively connected to each vacuum pump, and then the oil discharged by each vacuum pump is recovered by the oil discharge recovery component arranged on the foundation outside the corresponding vacuum pump. In this way, the problem that the prior art requires manual use of a hand-cranked oil pump and a trolley to replenish oil one by one, and the discharged oil cannot be recovered, is solved. By adopting the above-mentioned technical solution of the present application, since the entire process is automatically carried out through the oil replenishment conveying mechanism and the oil discharge recovery component, not only the degree of manual participation is greatly reduced, but also the oil replenishment efficiency can be significantly improved, the effect of oil replenishment is guaranteed, and the quality of oil recovery is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the oil replenishment and delivery mechanism involved in the gravity oil replenishment system for the titanium sponge vacuum pump of the present invention;

[0016] Figure 2 It is a schematic diagram of the planar layout of the oil drain recovery components involved in the gravity oil replenishment system for the titanium sponge vacuum pump of the present invention;

[0017] Figure 3 It is a three-view diagram of a high-level oil storage device involved in the gravity oil replenishment system for a titanium sponge vacuum pump of the present invention;

[0018] Figure 4 Two views of the oil storage tank involved in the gravity oil replenishment system for the titanium sponge vacuum pump of the present invention.

[0019] Marked in the figure are: vacuum pump 1, oil drainage collection ditch 2, oil collection pit 3, oil recovery pump 4, oil storage barrel 5, oil storage tank 6, manhole 7, ventilation pipe 8, oil filling port 9, radar level gauge 10, C-type connecting tube level gauge 11, oil outlet 12, sewage outlet 13, tank saddle 14, manhole cover 15, sewage stop valve 16, load-bearing truss 17, extension platform 18, rain shelter 19, guardrail 20, ladder 21, oil delivery main pipe 22, oil delivery branch pipe 23, oil delivery distribution pipe 24, stop valve 25, control valve 26, pump side cofferdam 27. DETAILED DESCRIPTION

[0020] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4The present invention provides a self-flowing oil replenishment system for a sponge titanium vacuum pump that can greatly reduce manual participation and significantly improve the efficiency of oil replenishment. The self-flowing oil replenishment system includes a plurality of vacuum pumps 1 arranged in a pump plant, and the self-flowing oil replenishment system also includes a high-level oil storage device, an oil replenishment conveying mechanism, and an oil discharge recovery component. The oil inlet end of the oil replenishment conveying mechanism is connected to the high-level oil storage device, and the oil outlet end of the oil replenishment conveying mechanism is respectively connected to each vacuum pump 1. The oil discharged from each vacuum pump 1 is recovered by an oil discharge recovery component arranged on the outer foundation of the corresponding vacuum pump. The technical solution provided in the present application is based on a plurality of vacuum pumps arranged in a pump plant. The self-flowing oil replenishment system of the present application is formed by adding a high-level oil storage device, an oil replenishment conveying mechanism, and an oil discharge recovery component, and the oil inlet end of the oil replenishment conveying mechanism is connected to the high-level oil storage device, and the oil outlet end of the oil replenishment conveying mechanism is respectively connected to each vacuum pump, and then the oil discharged from each vacuum pump is recovered by an oil discharge recovery component arranged on the outer foundation of the corresponding vacuum pump. In this way, the problem that the prior art requires manual use of a hand-cranked oil pump and a trolley to replenish oil one by one and is unable to recover the discharged oil is solved. By adopting the above-mentioned technical solution of the present application, since the entire process is automatically carried out through the oil replenishment conveying mechanism and the oil discharge recovery component, not only the degree of manual participation is greatly reduced, but also the oil replenishment efficiency can be significantly improved, the oil replenishment effect can be guaranteed, and the quality of oil recovery can be improved.

[0021] Combined with the arrangement of vacuum pumps at the production site, in order to simplify the recovery structure and adapt to the arrangement of vacuum pumps, the oil recovery assembly of the present application includes an oil collection ditch 2, an oil collection pit 3 and an oil recovery pump 4. An oil collection ditch 2 connected to the oil collection pit 3 is arranged on the foundation of each vacuum pump oil discharge port. The oil collection pit 3 is arranged at a specified position in the pump plant, and the oil collected in the oil collection pit 3 is pumped out of the oil collection pit 3 by the oil recovery pump 4. The preferred mode is that the oil collection ditch 2 is composed of channel steel arranged on the foundation of each vacuum pump oil discharge port, and the oil recovery assembly also includes an oil storage barrel 5, and the oil output end of the oil recovery pump 4 is connected to the oil storage barrel 5. A pump side cofferdam 27 is also arranged on the foundation near each vacuum pump oil discharge port, and the input end of the oil collection ditch 2 composed of channel steel is connected to the pump side cofferdam 27.

[0022] Accordingly, as the key component improved in the present application, in order to maximize the autonomy of oil replenishment, it is possible to adapt to the distribution environment of the vacuum pumps arranged at intervals in the factory building, and at the same time, to simplify its structure to the maximum extent. The high-level oil storage device of the present application includes an oil storage tank 6 and a load-bearing support structure. The oil storage tank 6 is arranged at a specified position in the pump factory building through the load-bearing support structure, and the oil inlet end of the oil replenishment delivery mechanism is connected to the oil storage tank 6. The oil replenishment delivery mechanism of the present application includes a delivery pipeline network, a control valve group and an oil replenishment hose. The oil input end of the delivery pipeline network is connected to the oil outlet 12 at the bottom of the oil storage tank. The number of oil replenishment hoses is equivalent to the number of vacuum pumps. Each oil replenishment hose corresponds to each vacuum pump 1 and is connected with the corresponding control valve group.

[0023] More specifically, a manhole 7, a vent pipe 8, an oil filling port 9 and a radar level gauge 10 are provided on the top of the oil storage tank 6 of the present application, a C-type connecting tube level gauge 11 is provided at one end of the oil storage tank 6, an oil outlet 12, a sewage outlet 13 and a tank saddle 14 are provided at the bottom of the oil storage tank 6, the oil storage tank 6 is arranged on the load-bearing support structure through the tank saddle 14, the manhole 7 is detachably closed by a manhole cover 15, the oil inlet end of the oil replenishment and delivery mechanism is connected to the oil outlet 12, the sewage outlet 13 is opened or closed by a sewage shut-off valve 16, and the oil filling port 9 is connected to the external oil filling pipe through a flange. The load-bearing support structure of the present application includes a load-bearing truss 17, an extension platform 18, a rain shelter 19, a guardrail 20 and a ladder 21. The oil storage tank 6 is arranged at a specified position on the top of the load-bearing truss through a tank saddle 14. The extension platform 18 is arranged on the left and right sides of the load-bearing truss 17 respectively. A rain shelter 19 is provided on the top of the load-bearing truss 17 and the extension platform 18 respectively. Guardrails 20 are arranged around the platform formed by the load-bearing truss 17 and the extension platform 18 respectively. The ladder 21 is connected to the protection platform 18 on the right. The transmission pipeline network includes an oil main pipe 22, an oil branch pipe 23 and an oil distribution pipe 24. The oil main pipe 22 is arranged in the pump plant above the vacuum pump along the installation direction of the vacuum pump 1. Each oil branch pipe 23 located in the same horizontal plane is sequentially connected to the oil main pipe 22 along the length direction of the oil main pipe. Each oil distribution pipe 24, the number of which is equivalent to the number of vacuum pumps 1, is connected to the corresponding oil branch pipe 23 in the vertical direction. The control valve group includes a plurality of stop valves 25, the number of which is equivalent to the number of oil distribution pipes 24. A stop valve 25 is arranged at the end of each oil distribution pipe 24. Each oil supply hose is connected to the corresponding oil distribution pipe 24 through each stop valve 25. The preferred mode is that the vertical height of the interconnected oil main pipe 22 and the oil branch pipe 23 from the vacuum pump is not less than 1.5m, and a control valve 26 is also arranged at the input end of the oil main pipe 22.

[0024] The technical solution of the present application is further described below through specific embodiments:

[0025] Embodiment 1

[0026] The purpose of the present application is to provide a vacuum pump gravity oil discharge and oiling method and device which can significantly reduce the number of people involved in vacuum pump oiling and oiling operations and greatly shorten the vacuum pump oiling and oiling time.

[0027] The composition of the automatic refueling system: The high-level oil storage tank is the key item in the system. The size of the oil storage tank is 4000mm long, 1500mm in diameter, and has a load weight of 7t.

[0028] In order to use gravity to realize the automatic flow of oil, the oil tank is installed on a platform with a height of 5 meters. The materials use 22# I-beam as the main beam, 10# channel steel as the platform beam, and 50 angles as the reinforcement ribs. For the convenience of maintenance, a platform is set up around the oil tank, and a δ4mm patterned plate is laid on the platform; in order to enable operators to go up to the maintenance platform, a staircase is set on one side of the oil tank load-bearing platform.

[0029] In order to support the oil tank, a new steel structure load-bearing platform and load-bearing columns need to be built. Due to the high installation height and heavy overall weight of the oil tank, the overall structure is top-heavy and has a certain tendency to tilt. Therefore, the platform foundation has high requirements for load-bearing capacity and anti-settlement. The platform foundation needs to be cast as an integral reinforced concrete box foundation, and the structural strength of the load-bearing columns and load-bearing beams needs to be strengthened.

[0030] The foundation is cast in a box-type reinforced concrete, with dimensions of 4000mm long × 3000mm wide × 500mm thick. Φ16 steel bars are used with a spacing of 200mm to weave a box-type frame, and the new frame is welded with the original steel cage to form a whole. The steel plate embedded parts with dimensions of 400×400mm and thickness of 16mm are made, and the steel bar grabs are Φ16mm. After holes are opened on the embedded steel plate, the steel bars are firmly welded to the embedded steel plate through the holes. The grabs cannot be directly welded to the back of the steel plate embedded parts. The concrete uses C30 concrete.

[0031] Use seamless steel pipes Φ273×10mm to make 4 load-bearing columns. Welding reinforcement triangles are required between the columns, load-bearing beams and embedded foundation steel plates. The triangles are 12mm thick and 300×300mm in size. Cross-straight reinforcement frames are welded between the columns. The diagonal frame uses double-layer 70 angle steel or 10# channel steel. The middle pads at appropriate positions of the double-layer diagonal frame strengthen the structural strength.

[0032] The load-bearing frame beam on the column is made of 220×110×8mm (22#) I-beams, and the lower load-bearing beam of the tank saddle is made of two 22# I-beams welded side by side to form a box beam. At the junction of the two ends of the box beam, the two I-beam webs of the box beam must be inserted into the beam flange and the beam web to form a welding fillet weld. After welding is completed, the right-angle triangle reinforcement plate is welded.

[0033] Using the already manufactured load-bearing beams and columns as the foundation, make the platform frames and support columns at both ends of the load-bearing beams. Lay the 6mm patterned plate platform panel, use 70×5mm angle steel to make stairs and safety railings, the stairs must be made of 16# channel steel, and the safety railing is 1200mm high. After the platform is completed, use 22# I-beams to connect the platform to the right factory frame beam in four places.

[0034] In order to ensure uniform force and facilitate manufacturing, the oil storage tank is cylindrical and has steps at both ends.

[0035] In order to facilitate the filling of the oil storage, a refueling pipe is set at the fixed end of the oil storage pipe. For the convenience of disassembly, a DN50 short-circuit with a flange is set on the top of the tank. The DN50 pipe is connected to the oil pump installed on the ground. When in use, the hose at one end of the oil pump is inserted into the oil barrel, and the lubricating oil can be pumped into the oil storage tank using the oil pump.

[0036] In order to facilitate remote detection of the oil level in the tank, a radar level gauge is installed on the top of the tank. In order to facilitate on-site workers to check the oil level in the tank, a C-type interconnecting tube oil level gauge is installed at one end of the tank. The upper end of the C-type interconnecting tube oil level gauge is connected to the upper end of the tank, and the lower end is connected to the bottom of the tank. They are connected by a DN80 pipe. For easy disassembly, a short circuit is installed at the upper end of the DN80 pipe. To control the flow of hydraulic oil, a DN80 valve is installed on the lower end of the pipe.

[0037] In order to facilitate the daily cleaning of the oil storage tank, a DN500 manhole is set on the top of the oil storage tank.

[0038] In order to discharge the expansion gas in the oil storage tank during high temperature season, a DN50 vent pipe is installed on the top of the oil storage tank. For the convenience of disassembly, a DN50 short-circuit with flange is installed on the top of the tank body. A flange is welded at one end of the connecting pipe and connected to the short-circuit on the tank body.

[0039] The oil filling pipe short circuit, manhole, radar level gauge short circuit and ventilation pipe short circuit are arranged longitudinally in the center of the top of the tank.

[0040] In order to let the lubricating oil in the oil storage tank flow out, a DN80 lubricating oil outlet pipe is set at the center of the bottom of the oil storage tank. For easy disassembly, a DN50 short-circuit with flange is set at the bottom of the tank body; a flange is welded at one end of the connecting pipe and connected to the short-circuit on the tank body.

[0041] In order to regularly discharge the dirty oil at the bottom of the oil tank, a DN50 dirty oil discharge pipe is installed at the bottom of the oil tank. For easy disassembly, a DN50 short-circuit with flange is installed at the bottom of the tank; a flange is welded at one end of the connecting pipe and connected to the short-circuit on the tank.

[0042] In order to place the oil storage tank, two sets of saddle seats are set at the bottom of the oil storage tank. The saddle seats are made of δ16mm stainless steel plates; the saddle seats are welded on the main beam of the load-bearing platform. The position of the saddle seats is at the horizontal 1 / 3 position of the load-bearing platform.

[0043] In order to allow the oil to flow to the vacuum pump by gravity, a DN80 stainless steel pipe is selected for the main pipe according to the number of vacuum pumps. To control the amount of oil, a DN80 valve is installed 2 meters away from the outlet of the oil storage tank. The main pipeline is arranged in the same direction along the vacuum pump layout, and is 1.5 meters to 2 meters high according to the vacuum pump height. A DN32 stainless steel pipe is arranged vertically on the upper end of each vacuum pump, and a DN32 valve is installed 200-300mm away from the refueling port of the vacuum pump. A hose is installed on the valve outlet. When the vacuum pump needs to be refueled, the hose is inserted into the refueling port of the vacuum pump. The vacuum pump can be refueled by opening the valve. After adding the required amount of oil, the refueling can be stopped by closing the valve.

[0044] Oil drainage method and device: The composition of the gravity waste oil drainage system: pump side cofferdam, oil flow trough, oil accumulation pit, oil pump, rubber oil pipe;

[0045] A cofferdam is set up around the pump with steel plates on the foundation, and the inside of the cofferdam is treated for seepage prevention. 12# channel steel is used as the oil drain trough, which consists of a branch trough and a main trough. The branch troughs are connected to the steel plate cofferdam openings next to the pump, and multiple groups of branch troughs are connected to a main trough. One end of the main trough is blocked, and the other end is connected to the oil accumulation pit.

[0046] An oil storage tank is set at a suitable location. The oil storage tank is a rectangular pit dug on the ground, and then the inner wall of the pit is smoothed with cement. Then a rectangular groove is made of δ10 stainless steel plate and placed in the rectangular pit as a container to prevent oil leakage. A cover plate is provided on the top of the oil storage pit, and a hole is opened on the cover plate according to the size of the oil extraction pipe to place the oil extraction pipe.

[0047] An oil pump is set at a suitable location, with the inlet pipe of the oil pump connected to the oil pit and the other end connected to the waste oil barrel placement area.

[0048] Use of gravity oil drainage system: When a pump needs to discharge waste oil, open the vacuum pump oil drain valve, the waste oil will flow from the pump to the cofferdam next to the pump, then from the cofferdam to the branch oil drain trough, then to the main oil drain trough, and finally flow into the oil accumulation pit through the main oil drain trough.

[0049] When the oil pit accumulates to a certain level, an oil pump is used to pump the waste oil in the oil pit into the waste oil barrel for transportation and treatment.

[0050] The use of gravity oiling system and gravity waste oil drainage system effectively reduces the intensity of maintenance and production workers and greatly saves maintenance costs.

Claims

1. A gravity oil replenishment system for a titanium sponge vacuum pump, comprising a plurality of vacuum pumps (1) arranged in a pump plant, characterized in that: The gravity oil replenishment system further comprises a high-position oil storage device, an oil replenishment conveying mechanism and an oil discharge recovery component. The oil inlet end of the oil replenishment conveying mechanism is connected to the high-position oil storage device, and the oil outlet end of the oil replenishment conveying mechanism is respectively connected to each vacuum pump (1). The oil discharged by each vacuum pump (1) is recovered by an oil discharge recovery component arranged on the foundation outside the corresponding vacuum pump.

2. The gravity oil replenishment system for a titanium sponge vacuum pump according to claim 1, characterized in that: The oil recovery assembly comprises an oil collection ditch (2), an oil collection pit (3) and an oil recovery pump (4). An oil collection ditch (2) connected to the oil collection pit (3) is arranged on the foundation of each vacuum pump oil discharge port. The oil collection pit (3) is arranged at a specified position in a pump plant. The oil collected in the oil collection pit (3) is pumped out of the oil collection pit (3) by the oil recovery pump (4).

3. The gravity oil replenishment system for a titanium sponge vacuum pump according to claim 2 is characterized in that: The oil discharge collection ditch (2) is composed of channel steel arranged on the foundation of the oil discharge port of each vacuum pump. The oil discharge recovery component also includes an oil storage barrel (5). The oil output end of the oil recovery pump (4) is connected to the oil storage barrel (5).

4. The gravity oil replenishment system for a titanium sponge vacuum pump according to claim 1, 2 or 3, characterized in that: The high-position oil storage device comprises an oil storage tank (6) and a load-bearing support structure. The oil storage tank (6) is arranged at a specified position of a pump plant through the load-bearing support structure, and the oil inlet end of the oil replenishment and delivery mechanism is connected to the oil storage tank (6).

5. The gravity oil replenishment system for a titanium sponge vacuum pump according to claim 4 is characterized in that: A manhole (7), a vent pipe (8), an oil filling port (9) and a radar level gauge (10) are arranged on the top of the oil storage tank (6); a C-type connecting tube type level gauge (11) is arranged at one end of the oil storage tank (6); an oil outlet (12), a sewage outlet (13) and a tank body saddle (14) are arranged at the bottom of the oil storage tank (6); the oil storage tank (6) is arranged on a load-bearing support structure through the tank body saddle (14); the manhole (7) is detachably closed by a manhole cover (15); the oil inlet end of the oil replenishment and delivery mechanism is connected to the oil outlet (12); the sewage outlet (13) is opened or closed by a sewage discharge stop valve (16); and the oil filling port (9) is connected to an external oil filling pipe through a flange.

6. The gravity oil replenishment system for a titanium sponge vacuum pump according to claim 5, characterized in that: The load-bearing support structure comprises a load-bearing truss (17), an extension platform (18), a rain shelter (19), a guardrail (20) and a ladder (21); the oil storage tank (6) is arranged at a specified position on the top of the load-bearing truss through a tank body saddle (14); the extension platform (18) is arranged on the left and right sides of the load-bearing truss (17); the rain shelter (19) is arranged on the top of the load-bearing truss (17) and the extension platform (18); the guardrail (20) is arranged around the platform formed by the load-bearing truss (17) and the extension platform (18); and the ladder (21) is connected to the right side of the protection platform (18).

7. The self-flowing oil replenishing system for a titanium sponge vacuum pump according to claim 6 is characterized in that: The oil replenishment delivery mechanism comprises a delivery pipeline network, a control valve group and an oil replenishment hose. The oil input end of the delivery pipeline network is connected to the oil outlet (12) at the bottom of the oil storage tank. The number of the oil replenishment hoses is equal to the number of the vacuum pumps. Each oil replenishment hose is connected to each vacuum pump (1) in a one-to-one correspondence with each vacuum pump (1) in cooperation with the corresponding control valve group.

8. The gravity oil replenishment system for a titanium sponge vacuum pump according to claim 7, characterized in that: The transmission pipeline network comprises an oil main pipe (22), an oil branch pipe (23) and an oil distribution pipe (24). The oil main pipe (22) is arranged in a pump plant above the vacuum pump along the installation direction of the vacuum pump (1). The oil branch pipes (23) located in the same horizontal plane are sequentially connected to the oil main pipe (22) along the length direction of the oil main pipe. The oil distribution pipes (24) whose number is equal to the number of vacuum pumps (1) are connected to the corresponding oil branch pipes (23) in the vertical direction. The control valve group comprises a plurality of stop valves (25) whose number is equal to the number of the oil distribution pipes (24). A stop valve (25) is arranged at the end of each oil distribution pipe (24). The oil supply hoses are connected to the corresponding oil distribution pipes (24) through the stop valves (25) one by one.

9. The gravity oil replenishment system for a titanium sponge vacuum pump according to claim 8, characterized in that: The interconnected oil delivery main pipe (22) and oil delivery branch pipe (23) are at a vertical height of not less than 1.5 m from the vacuum pump, and a control valve (26) is also provided at the input end of the oil delivery main pipe (22).

10. The gravity oil replenishment system for a titanium sponge vacuum pump according to claim 3, characterized in that: A pump-side cofferdam (27) is also arranged on the foundation near the oil discharge port of each vacuum pump, and the input end of the oil discharge collection ditch (2) made of channel steel is connected to the pump-side cofferdam (27).

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