Vacuum negative pressure quantitative oil injection device for oil chamber of submersible pump

Abstract

The application discloses a kind of vacuum negative pressure quantitative oil injection devices of submersible pump oil cavity, it is related to the technical field of oil injection device, including at least one vacuum negative pressure quantitative oil injection mechanism, vacuum negative pressure quantitative oil injection mechanism includes controller, rack, the mounting seat being set on rack, the carrier plate being slidably connected on rack and the drive assembly being connected on rack, drive assembly is used to drive carrier plate to the direction of being close to or away from mounting seat sliding, carrier plate is connected with oil injection piece, oil injection piece is connected with sealing element and liquid level sensor, oil injection piece is provided with oil inlet channel, oil return channel and vacuum extraction channel, oil injection piece is connected with the oil inlet assembly corresponding to oil inlet channel, the oil return assembly corresponding to oil return channel and the vacuum extraction assembly corresponding to vacuum extraction channel, and liquid level sensor, oil inlet assembly, oil return assembly and vacuum extraction assembly are electrically connected with controller.The application automatic machine oil, improve the efficiency of filling submersible pump.

Description

Technical Field

[0001] This application relates to the technical field of oil injection devices, and in particular to a vacuum negative pressure quantitative oil injection device for the oil chamber of a submersible pump. Background Technology

[0002] One step in the production of submersible pumps is to fill them with oil. This oil provides protection for the pump. The oil filling is done manually, with the operator checking if the oil level is full before proceeding to the next step. If the oil chamber is not completely filled, air will be trapped inside. Moisture from this air, if left in the oil for an extended period, will negatively impact its quality.

[0003] When adding oil, the staff directly aligns the oil pipe with the oil inlet of the submersible pump and adds oil. After adding a certain amount of oil, they stop adding oil and judge whether the oil is full based on their experience before proceeding to the next step, such as adding more oil or moving on to the next production process.

[0004] Although this oiling method is quite flexible and can lubricate different models of submersible pumps without the need for additional equipment, the amount of oil injected is not easy to control precisely due to manual operation. If the amount of oil injected is insufficient, multiple oil replenishments are required, and if the amount of oil injected is excessive, oil will overflow from the submersible pump. This method needs to be improved. Summary of the Invention

[0005] The purpose of this application is to provide a vacuum negative pressure metering oil injection device for the oil chamber of a submersible pump, in order to improve the efficiency of filling the submersible pump.

[0006] This application provides a vacuum negative pressure quantitative oil injection device for a submersible pump oil chamber, which adopts the following technical solution: It includes at least one vacuum negative pressure quantitative oil injection mechanism. The vacuum negative pressure quantitative oil injection mechanism includes a controller, a frame, a mounting base disposed on the frame, a carrier plate slidably connected to the frame, and a drive assembly connected to the frame. The drive assembly is used to drive the carrier plate to slide towards or away from the mounting base. The carrier plate is connected to an oil injection component, which is connected to a sealing component and a liquid level sensor. The oil injection component is provided with an oil inlet channel, an oil return channel, and a vacuum channel. The oil injection component is connected to an oil inlet assembly corresponding to the oil inlet channel, an oil return assembly corresponding to the oil return channel, and a vacuum assembly corresponding to the vacuum channel. The liquid level sensor, the oil inlet assembly, the oil return assembly, and the vacuum assembly are all electrically connected to the controller.

[0007] By adopting the above technical solution, after the submersible pump is installed on the mounting base, the drive assembly drives the carrier plate to slide towards the submersible pump until the seal is pressed against the submersible pump. At this time, part of the oil injection component and the liquid level sensor extend into the oil chamber of the submersible pump, and the oil inlet channel, oil return channel and vacuum channel are all connected to the oil chamber. The seal seals the gap between the submersible pump and the oil injection component, so that the oil chamber is in a sealed state. The controller activates the vacuum pump assembly, which, in conjunction with the vacuum channel, removes air from the oil chamber, reducing its air content. The controller then deactivates the vacuum pump assembly. Next, the controller activates the oil inlet assembly, which, in conjunction with the oil inlet channel, fills the oil chamber with oil until it reaches the level sensor. At this point, the controller activates the return oil assembly. Even if air is not completely removed from the oil chamber, due to density differences, it tends to rise to the top of the submersible pump. The return oil assembly and channel remove this air, along with some oil, reducing the air content and its impact on the oil. Simultaneously, the oil inlet assembly and channel continue to supply oil, maintaining the pressure within the submersible pump. After a period of time, the controller deactivates both the return and inlet assemblies, ensuring the submersible pump is filled with oil as much as possible. After standing for a period of time, the air mixed in the engine oil will gradually rise and eventually gather on top of the oil. The controller controls the oil inlet component and the oil return component to open. Through the cooperation of the oil inlet component and the oil inlet channel, as well as the cooperation of the oil return component and the oil return channel, while evacuating air, oil continues to be injected into the submersible pump. The controller controls the oil return component and the oil inlet component to close, so that the submersible pump is filled with engine oil, automatically filling the submersible pump and improving the efficiency of filling the submersible pump.

[0008] Optionally, the oil injection component includes a connecting plate connected to the carrier plate and a connecting pipe connected to the connecting plate. The oil inlet channel, the oil return channel, and the vacuum channel are all disposed on the connecting plate and pass through the connecting pipe. The height of the oil inlet of the oil return channel is higher than the height of the oil outlet of the oil inlet channel. The sealing element and the liquid level sensor are both connected to the connecting pipe.

[0009] By adopting the above technical solution, after the submersible pump is placed on the mounting base, the drive assembly drives the carrier plate to slide towards the submersible pump. The end of the connecting pipe away from the connecting plate extends into the submersible pump. Since the height of the oil inlet of the return oil channel is higher than the height of the oil outlet of the oil inlet channel, it is possible to both introduce oil into the submersible pump and remove air from the submersible pump.

[0010] Optionally, the connecting pipe is connected to a connecting block, the connecting block is slidably connected to a slider, the connecting pipe passes through the slider, the connecting block and the slider are connected by an elastic element, the sealing element includes a sealing plug and a sealing ring connected to the sealing plug, both the sealing plug and the sealing ring are connected to the connecting block, and the connecting pipe passes through the sealing plug and slides in cooperation with the sealing plug.

[0011] By adopting the above technical solution, when the moving component drives the carrier plate to slide towards the submersible pump, one end of the sealing plug and connecting pipe is inserted into the submersible pump, and the sealing ring abuts against the upper surface of the submersible pump, thereby achieving a seal on the submersible pump. The elastic element undergoes elastic deformation under pressure and maintains a tendency to elastically return to its original position. The elastic element causes the slider, sealing plug, and sealing ring to have a force that moves away from the connecting block, thereby improving the sealing effect of the sealing ring on the submersible pump.

[0012] Optionally, the connecting block is connected to at least two guide posts, and the slider is provided with guide grooves corresponding to the guide posts one by one, and the guide posts and guide grooves slide in cooperation.

[0013] By adopting the above technical solution, when the slider slides, the sliding cooperation between the guide post and the guide groove plays a guiding and limiting role in the sliding of the slider, thereby improving the stability of the movement of the slider, sealing ring and sealing plug, that is, improving the sealing effect of the sealing ring and sealing plug on the submersible pump.

[0014] Optionally, the mounting base is provided with a mounting groove for cooperating with a submersible pump. The mounting base is slidably connected to two first clamping plates. The mounting base is connected to a linkage component for driving the two first clamping plates to slide towards or away from each other.

[0015] By adopting the above technical solution, the submersible pump is placed in the mounting groove, and the outer surface of the submersible pump is in contact with the inner wall of the mounting groove to position the submersible pump. The linkage component drives the two first clamping plates to slide towards each other until the first clamping plates abut against the submersible pump, so that the two first clamping plates clamp the submersible pump and improve the stability of the submersible pump installed on the mounting base.

[0016] Optionally, the mounting base is provided with a first slide rail, and the two first clamping plates slide in cooperation with the first slide rail. The linkage component includes a rotating rod rotatably connected to the mounting base, a first driving member connected to the mounting base, and a connecting rod rotatably connected to each of the first clamping plates. The first driving member is used to drive the rotating rod to rotate, and the ends of the two connecting rods away from the first clamping plates are respectively rotatably connected to the two ends of the rotating rod. The first driving member is electrically connected to the controller.

[0017] By adopting the above technical solution, the first driving member drives the rotating rod to rotate around the axis of the first driving member. That is, the two connecting rods move with the rotation of the rotating rod. During the movement, the two connecting rods drive the two first clamping plates to slide towards or away from each other, thereby clamping or releasing the submersible pump. The sliding cooperation between the first clamping plate and the first slide rail guides and limits the sliding of the first clamping plate, thereby improving the stability of the sliding of the first clamping plate.

[0018] Optionally, it also includes a transmission component. There are two vacuum negative pressure quantitative oil injection mechanisms and several mounting seats. The mounting seats slide with the frame. The transmission component is used to move the mounting seat on one of the vacuum negative pressure quantitative oil injection mechanisms to the other vacuum negative pressure quantitative oil injection mechanism.

[0019] By adopting the above technical solution, after the first vacuum negative pressure metering oil filling mechanism fills the submersible pump with oil, the transmission component moves the submersible pump to stand between the two vacuum negative pressure metering oil filling mechanisms. The first vacuum negative pressure metering oil filling mechanism continues to fill the new submersible pump with oil. Subsequently, the transmission component moves the submersible pump that has been placed to stand to the second vacuum negative pressure metering oil filling mechanism, and moves the submersible pump located at the first vacuum negative pressure metering oil filling mechanism to stand between the two vacuum negative pressure metering oil filling mechanisms, thereby improving the overall oil filling efficiency of the submersible pump.

[0020] Optionally, the drive assembly includes a vertical plate slidably connected to the frame, a drive structure connected to the frame, and a second drive member connected to the vertical plate. The carrier plate is slidably engaged with the vertical plate. The second drive member is used to drive the carrier plate to slide towards or away from the mounting base. The drive structure is used to drive the vertical plate to slide towards or away from the mounting base. Both the drive structure and the second drive member are electrically connected to the controller. The vertical plate is connected to a clamping structure.

[0021] By adopting the above technical solution, when the submersible pump moves to the vacuum negative pressure metering oil filling mechanism, the drive structure drives the vertical plate to slide towards the mounting base, so that the clamping structure corresponds to the upper end of the submersible pump, making it easier for the clamping structure to clamp the submersible pump and improving the stability of the submersible pump mounted on the mounting base. When the submersible pump is filled with oil, the drive structure drives the vertical plate to slide away from the mounting base, so that the clamping structure separates from the submersible pump, preventing the clamping structure from affecting the movement of the submersible pump.

[0022] Optionally, the clamping structure includes two second clamping plates slidably connected to the vertical plate and a third driving member connected to the vertical plate. The third driving member is used to drive the two second clamping plates to slide in a direction that moves closer to or further away from each other. The third driving member is electrically connected to the controller.

[0023] By adopting the above technical solution, the third driving component drives the two second clamping plates to slide towards each other or away from each other, thereby clamping or releasing the submersible pump.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. After standing for a period of time, the air mixed in the oil will gradually rise and eventually gather on top of the oil. The controller controls the oil inlet component and the oil return component to open. Through the cooperation of the oil inlet component and the oil inlet channel, as well as the cooperation of the oil return component and the oil return channel, while evacuating air, oil continues to be injected into the submersible pump. The controller controls the oil return component and the oil inlet component to close, so that the submersible pump is filled with oil, automatically filling the submersible pump and improving the efficiency of filling the submersible pump.

[0025] 2. It can improve both the efficiency and the effect of filling the submersible pump. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0027] Figure 2 This is one of the structural schematic diagrams of an embodiment of this application, showing a lifting cylinder.

[0028] Figure 3 yes Figure 2 An enlarged view of region A.

[0029] Figure 4 This is a schematic diagram of the overall structure of the mounting base.

[0030] Figure 5 This is a second partial structural schematic diagram of an embodiment of this application, showing the driving component.

[0031] Figure 6 yes Figure 5 A magnified view of region B.

[0032] Figure 7 This is a schematic diagram of the overall structure of the oiling component.

[0033] Figure 8 yes Figure 7 A sectional view.

[0034] Figure 9 yes Figure 8 A magnified view of region C.

[0035] Explanation of reference numerals in the attached drawings: 1. Transmission component; 11. Drive chain; 2. Vacuum negative pressure quantitative oil injection mechanism; 21. Frame; 22. Carrier plate; 23. Drive component; 231. Vertical plate; 232. Drive structure; 2321. Lead screw; 2322. Rotary motor; 233. Second drive component; 24. Lifting plate; 25. Lifting cylinder; 26. Stopper; 27. Clamping structure; 271. Second clamping plate; 272. Third drive component; 3. Mounting base; 31. 32. Mounting slot; 32. First clamping plate; 321. Clamping slot; 33. Tension spring; 34. Linkage assembly; 341. Rotating rod; 342. Connecting rod; 4. Oil injection component; 41. Connecting plate; 411. Oil inlet channel; 412. Oil return channel; 413. Vacuum channel; 42. Connecting pipe; 43. Connecting block; 431. Guide post; 44. Slider; 45. Elastic component; 46. Sealing component; 461. Sealing plug; 462. Sealing ring; 5. Liquid level sensor. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 This application will be described in further detail.

[0037] This application discloses a vacuum negative pressure quantitative oil injection device for the oil chamber of a submersible pump.

[0038] like Figure 1 As shown, the device includes a transmission assembly 1 and at least two vacuum negative pressure metering oil injection mechanisms 2. Taking this embodiment as an example, there are two vacuum negative pressure metering oil injection mechanisms 2, which are spaced apart. The transmission assembly 1 is prior art and is the same as the transmission mechanism in publication number CN117340515B. The transmission assembly 1 includes two opposing transmission chains 11, which are driven to rotate by a motor, a transmission shaft, and transmission gears. Several mounting seats 3 are placed above the transmission chains 11. The rotation of the two transmission chains 11 causes the mounting seats 3 to move sequentially onto the two vacuum negative pressure metering oil injection mechanisms 2.

[0039] Combination Figure 1 , Figure 2 and Figure 3As shown, the vacuum negative pressure quantitative oil injection mechanism 2 includes a controller (not shown in the attached figure), a frame 21, a carrier plate 22 slidably connected to the frame 21, and a drive assembly 23 connected to the frame 21. A lifting plate 24 is slidably connected to the frame 21. When the lifting plate 24 is not raised, it is located below the transmission chain 11. A lifting cylinder 25 is fixedly connected to the frame 21. The signal output terminal of the controller is connected to the signal input terminal of the lifting cylinder 25. The side of the lifting plate 24 closest to the lifting cylinder 25 is fixedly connected to the output terminal of the lifting cylinder 25. Through the cooperation of the lifting plate 24 and the lifting cylinder 25, the mounting seat 3 on the transmission chain 11 can be lifted, thus separating the mounting seat 3 from the transmission chain 11. The frame 21 is connected to a stopper 26, which is existing technology and has the same structure as the stopper 26 in publication number CN220744519U. The stopper 26 is located on one side of the lifting plate 24. The stopper 26 blocks the mounting base 3, so that the mounting base 3 is accurately located at the upper end of the lifting plate 24.

[0040] like Figure 4 As shown, the upper surface of the mounting base 3 has a mounting groove 31. The submersible pump is installed in the mounting groove 31, which cooperates with the submersible pump to position it during installation. The mounting base 3 has two first clamping plates 32 that slide relative to each other. A clamping groove 321 is formed on one side of each first clamping plate 32 facing each other, and a buffer plate is fixedly connected to the inner wall of the clamping groove 321. The mounting base 3 is fixedly connected to a first slide rail, and the first clamping plates 32 slide in cooperation with the first slide rail. The two first clamping plates 32 are connected by a tension spring 33, with both ends of the tension spring 33 fixedly connected to the two first clamping plates 32 respectively. The mounting base 3 is connected to a linkage component 34, which can drive the two first clamping plates 32 to slide towards or away from each other. The linkage component 34 includes a rotating rod 341 rotatably connected to the mounting base 3, a first driving member (not shown in the figure) fixedly connected to the mounting base 3, and a connecting rod 342 rotatably connected to each of the first clamping plates 32. The first driving member is a motor, and the signal output terminal of the controller is connected to the signal input terminal of the first driving member. The side of the rotating rod 341 near the first driving member is fixedly connected to the output terminal of the first driving member. The ends of the two connecting rods 342 away from the first clamping plates 32 are rotatably connected to the two ends of the rotating rod 341, respectively.

[0041] Combination Figure 5 and Figure 6As shown, the drive assembly 23 includes a vertical plate 231 slidably connected to the frame 21, a drive structure 232 connected to the frame 21, and a second drive member 233 fixedly connected to the vertical plate 231. A second slide rail is fixedly connected to the frame 21, and the vertical plate 231 slides in conjunction with the second slide rail. The drive structure 232 includes a lead screw 2321 rotatably connected to the frame 21 and a rotary motor 2322 fixedly connected to the frame 21. The signal output terminal of the controller is connected to the signal input terminal of the rotary motor 2322. The end of the lead screw 2321 near the rotary motor 2322 is fixedly connected to the output terminal of the rotary motor 2322. The vertical plate 231 is threadedly connected to the lead screw 2321. The carrier plate 22 slides in conjunction with the vertical plate 231. The second drive member 233 is a cylinder. The signal output terminal of the controller is connected to the signal input terminal of the second drive member 233, and the side of the carrier plate 22 near the second drive member 233 is fixedly connected to the output terminal of the second drive member 233. The vertical plate 231 is connected to a clamping structure 27, which is located between the carrier plate 22 and the mounting base 3. The clamping structure 27 includes two second clamping plates 271 that are slidably connected to the vertical plate 231 and a third driving member 272 that is fixedly connected to the vertical plate 231. The third driving member 272 is a double-rod double-axis cylinder. The signal output terminal of the controller is connected to the signal input terminal of the third driving member 272. The two second clamping plates 271 are fixedly connected to the two output terminals of the third driving member 272 respectively.

[0042] Combination Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the carrier plate 22 is connected to an oil injection component 4. The oil injection component 4 includes a connecting plate 41 fixedly connected to the carrier plate 22 and a connecting pipe 42 fixedly connected to the connecting plate 41. A liquid level sensor 5 is fixedly connected to the end of the connecting pipe 42 away from the connecting plate 41. The liquid level sensor 5 is electrically connected to the controller. The connecting plate 41 has an oil inlet channel 411, an oil return channel 412, and a vacuum channel 413. The oil inlet channel 411, the oil return channel 412, and the vacuum channel 413 all pass through the connecting pipe 42. The oil return channel 412 and the vacuum channel 413 are connected. The oil inlet of the oil return channel 412 and the air inlet of the vacuum channel 413 are the same. The oil outlet of the oil inlet channel 411 and the oil inlet of the oil return channel 412 are both higher than the liquid level sensor 5. The oil outlet of the oil inlet channel 411 is located between the oil inlet of the oil return channel 412 and the liquid level sensor 5. The connecting plate 41 is connected to an oil inlet assembly (not shown in the attached figure) corresponding to the oil inlet channel 411, an oil return assembly (not shown in the attached figure) corresponding to the oil return channel 412, and a vacuum assembly (not shown in the attached figure) corresponding to the vacuum channel 413. The oil inlet assembly includes an oil inlet pipe fixedly connected to the connecting plate 41, an oil inlet pump fixedly connected to the oil inlet pipe, and a first control valve fixedly connected to the oil inlet pipe. One end of the oil inlet pipe is fixedly connected to the oil tank, and the oil inlet pipe communicates with the oil inlet channel 411. The oil return assembly includes an oil return pipe fixedly connected to the connecting plate 41, an oil return pump fixedly connected to the oil return pipe, and a second control valve fixedly connected to the oil return pipe. One end of the oil return pipe is fixedly connected to the oil tank, and the other end of the oil return pipe communicates with the oil return channel 412. The vacuum assembly includes a vacuum tube fixedly connected to the connecting plate 41, a vacuum pump fixedly connected to the vacuum tube, and a third control valve fixedly connected to the vacuum tube. The vacuum tube communicates with the vacuum channel 413. The oil inlet pump, the first control valve, the oil return pump, the second control valve, the vacuum pump, and the third control valve are all electrically connected to the controller.

[0043] Combination Figure 7 , Figure 8 and Figure 9 As shown, an oil connecting block 43 is fixedly connected to the outer surface of the connecting pipe 42. A slider 44 is slidably connected to the lower surface of the connecting block 43. The connecting pipe 42 passes through the slider 44. The connecting block 43 and the slider 44 are connected by an elastic element 45, which is a spring. Both ends of the elastic element 45 are fixedly connected to the connecting block 43 and the slider 44, respectively. At least two guide posts 431 are fixedly connected to the connecting block 43. Taking this embodiment as an example, there are four guide posts 431, which are located at the four corners of the connecting block 43. The slider 44 has guide grooves that correspond one-to-one with the guide posts 431, and the guide posts 431 slide in cooperation with the guide grooves. A sealing element 46 is connected to the slider 44. The sealing element 46 includes a sealing plug 461 and a sealing ring 462 fixedly connected to the outer circumferential surface of the sealing plug 461. The connecting pipe 42 passes through the sealing plug 461 and slides in cooperation with the sealing plug 461.

[0044] The implementation principle of the vacuum negative pressure quantitative oil injection device for the oil chamber of a submersible pump according to the embodiments of this application is as follows: Step A, Install the submersible pump: Install the submersible pump in the mounting slot 31. The inner wall of the mounting slot 31 plays a preliminary positioning role for the submersible pump. Step B, Initial fixation of the submersible pump: The controller controls the first drive component to open, the first drive component drives the rotating rod 341 to rotate, the rotating rod 341 drives the two first clamping plates 32 to slide towards each other through the two connecting rods 342, so that the two first clamping plates 32 clamp the lower end of the submersible pump; Step C, move the mounting base 3 and fix the submersible pump again: The mounting base 3 with the submersible pump is placed on the transmission chain 11. The transmission component 1 drives the mounting base 3 to move to the first vacuum negative pressure metering oil injection mechanism 2. The drive structure 232 on the vacuum negative pressure metering oil injection mechanism 2 drives the vertical plate 231 to slide towards the mounting base 3 until the submersible pump is located between the two second clamping plates 271. The controller controls the third drive component 272 to open. The third drive component 272 drives the two second clamping plates 271 to slide towards each other. The two second clamping plates 271 clamp the submersible pump. Step D, sealing: The second driving member 233 drives the carrier plate 22 to slide towards the submersible pump. The sealing plug 461 and one end of the connecting pipe 42 are inserted into the submersible pump. The elastic member 45 is compressed and undergoes elastic deformation and maintains the tendency of elastic reset. The sealing ring 462 abuts against the top of the submersible pump, and the sealing plug 461 abuts against the inner wall of the submersible pump, thereby achieving the sealing of the submersible pump. Step E, Vacuuming: The controller controls the vacuuming component to open. Through the cooperation of the vacuuming component and the vacuuming channel 413, the air in the oil chamber is removed, thereby reducing the air in the oil chamber. The controller then controls the vacuuming component to close. Step F, oil filling: The controller controls the oil inlet assembly to open, and oil is injected into the oil chamber through the cooperation of the oil inlet channel 411 and the oil inlet assembly until the oil in the oil chamber reaches the level sensor 5. Then, the controller controls the oil return assembly to open, and the air and some oil at the top of the submersible pump are drawn away through the cooperation of the oil return assembly and the oil return channel 412, thereby reducing the air in the submersible pump and reducing the impact of air on the oil. At the same time, oil continues to be injected through the cooperation of the oil inlet assembly and the oil inlet channel 411 to maintain the air pressure in the submersible pump and fill the submersible pump. Step G, move and stand still: The second drive unit 233 drives the carrier plate 22 to slide away from the submersible pump, so that the sealing plug 461 and the connecting pipe 42 are disengaged from the submersible pump. The controller controls the third drive unit 272 to open. The third drive unit 272 drives the two second clamping plates 271 to slide away from each other. The two second clamping plates 271 release the submersible pump. The drive structure 232 drives the vertical plate 231 to slide away from the mounting base 3 until the submersible pump is misaligned with the two second clamping plates 271. The transmission component 1 drives the mounting base 3 filled with the submersible pump to move between the two vacuum negative pressure metering oil injection mechanisms 2. After standing still for a period of time, the air mixed in the oil will gradually rise and eventually gather on top of the oil. Step H, continue oil injection: The transmission component 1 moves the submersible pump, after it has settled, to another vacuum negative pressure metering oil injection mechanism 2. The drive structure 232 on the vacuum negative pressure metering oil injection mechanism 2 drives the vertical plate 231 to slide towards the mounting base 3 until the submersible pump is located between the two second clamping plates 271. The controller controls the third drive component 272 to open. The third drive component 272 drives the two second clamping plates 271 to slide towards each other, clamping the submersible pump. The second drive component 233 drives the carrier plate 22 towards the submersible pump. The sliding mechanism inserts one end of the sealing plug 461 and the connecting pipe 42 into the submersible pump. The elastic element 45 is compressed and undergoes elastic deformation while maintaining a tendency to elastically return to its original position. The sealing ring 462 abuts against the top of the submersible pump, and the sealing plug 461 abuts against the inner wall of the submersible pump, thereby achieving a seal on the submersible pump. The controller controls the opening of the oil inlet assembly and the oil return assembly. Through the cooperation of the oil inlet assembly and the oil inlet channel 411, and the cooperation of the oil return assembly and the oil return channel 412, oil continues to be injected into the submersible pump while air is being pumped out. The controller controls the closing of the oil return assembly and the oil inlet assembly, so that the submersible pump is filled with oil.

[0045] Two vacuum negative pressure quantitative oil filling mechanisms 2 simultaneously fill different submersible pumps with oil, and the submersible pump between the two vacuum negative pressure quantitative oil filling mechanisms 2 is stationary. These three submersible pumps are in different oil filling steps, which improves the overall oil filling efficiency of the submersible pumps.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vacuum negative pressure metering oil injection device for the oil chamber of a submersible pump, characterized in that: The device includes at least one vacuum negative pressure metering oil injection mechanism (2), which includes a controller, a frame (21), a mounting base (3) disposed on the frame (21), a carrier plate (22) slidably connected to the frame (21), and a drive assembly (23) connected to the frame (21). The drive assembly (23) is used to drive the carrier plate (22) to slide towards or away from the mounting base (3). The carrier plate (22) is connected to an oil injection component (4). The oil injection component (4) is connected to a sealing element (46) and a liquid level sensor (5). The oil injection component (4) is provided with an oil inlet channel (411), an oil return channel (412) and a vacuum channel (413). The oil injection component (4) is connected to an oil inlet assembly corresponding to the oil inlet channel (411), an oil return assembly corresponding to the oil return channel (412) and a vacuum assembly corresponding to the vacuum channel (413). The liquid level sensor (5), the oil inlet assembly, the oil return assembly and the vacuum assembly are all electrically connected to the controller.

2. The vacuum negative pressure metering oil injection device for the submersible pump oil chamber according to claim 1, characterized in that: The oil injection component (4) includes a connecting plate (41) connected to the carrier plate (22) and a connecting pipe (42) connected to the connecting plate (41). The oil inlet channel (411), the oil return channel (412) and the vacuum channel (413) are all arranged on the connecting plate (41) and pass through the connecting pipe (42). The height of the oil inlet of the oil return channel (412) is higher than the height of the oil outlet of the oil inlet channel (411). The sealing element (46) and the liquid level sensor (5) are both connected to the connecting pipe (42).

3. The vacuum negative pressure metering oil injection device for the submersible pump oil chamber according to claim 2, characterized in that: The connecting tube (42) is connected to a connecting block (43), the connecting block (43) is slidably connected to a slider (44), the connecting tube (42) passes through the slider (44), the connecting block (43) and the slider (44) are connected by an elastic element (45), the sealing element (46) includes a sealing plug (461) and a sealing ring (462) connected to the sealing plug (461), the sealing plug (461) and the sealing ring (462) are both connected to the connecting block (43), the connecting tube (42) passes through the sealing plug (461) and slides with the sealing plug (461).

4. The vacuum negative pressure metering oil injection device for the submersible pump oil chamber according to claim 3, characterized in that: The connecting block (43) is connected to at least two guide posts (431), and the slider (44) is provided with guide grooves corresponding to the guide posts (431) one by one. The guide posts (431) slide and cooperate with the guide grooves.

5. The vacuum negative pressure metering oil injection device for the submersible pump oil chamber according to claim 1, characterized in that: The mounting base (3) is provided with a mounting groove (31) for cooperating with a submersible pump. The mounting base (3) is slidably connected to two first clamping plates (32). The mounting base (3) is connected to a linkage component (34) for driving the two first clamping plates (32) to slide towards each other or away from each other.

6. The vacuum negative pressure metering oil injection device for the oil chamber of a submersible pump according to claim 5, characterized in that: The mounting base (3) is provided with a first slide rail, and the two first clamping plates (32) slide and cooperate with the first slide rail. The linkage component (34) includes a rotating rod (341) rotatably connected to the mounting base (3), a first driving member connected to the mounting base (3), and a connecting rod (342) rotatably connected to each of the first clamping plates (32). The first driving member is used to drive the rotating rod (341) to rotate. The ends of the two connecting rods (342) away from the first clamping plate (32) are respectively rotatably connected to the two ends of the rotating rod (341). The first driving member is electrically connected to the controller.

7. The vacuum negative pressure metering oil injection device for the submersible pump oil chamber according to claim 1, characterized in that: It also includes a transmission component (1), there are two vacuum negative pressure quantitative oil injection mechanisms (2), there are several mounting seats (3), the mounting seats (3) are slidably engaged with the frame (21), and the transmission component (1) is used to drive the mounting seat (3) on one of the vacuum negative pressure quantitative oil injection mechanisms (2) to move to the other vacuum negative pressure quantitative oil injection mechanism (2).

8. The vacuum negative pressure metering oil injection device for the submersible pump oil chamber according to claim 7, characterized in that: The drive assembly (23) includes a vertical plate (231) slidably connected to the frame (21), a drive structure (232) connected to the frame (21), and a second drive member (233) connected to the vertical plate (231). The carrier plate (22) is slidably engaged with the vertical plate (231). The second drive member (233) is used to drive the carrier plate (22) to slide towards or away from the mounting base (3). The drive structure (232) is used to drive the vertical plate (231) to slide towards or away from the mounting base (3). The drive structure (232) and the second drive member (233) are both electrically connected to the controller. The vertical plate (231) is connected to a clamping structure (27).

9. The vacuum negative pressure metering oil injection device for the oil chamber of a submersible pump according to claim 8, characterized in that: The clamping structure (27) includes two second clamping plates (271) slidably connected to the vertical plate (231) and a third driving member (272) connected to the vertical plate (231). The third driving member (272) is used to drive the two second clamping plates (271) to slide in a direction that moves closer to or further away from each other. The third driving member (272) is electrically connected to the controller.

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