Single line oiler

Abstract

The application provides a single-line oil injector, which comprises an oil injection pipe, a first adjusting rod, a piston rod and an oil inlet branch pipe. An oil outlet cavity is axially formed in the oil injection pipe, and an oil outlet is radially formed in the oil injection pipe. The first adjusting rod is rotatably sleeved at the end of the oil injection pipe. The piston rod is slidably arranged in the oil outlet cavity and is connected with the adjusting rod. The oil inlet branch pipe penetrates through a first blocking part in the oil injection pipe and is matched with the piston rod. The volume of the oil outlet cavity is changed by rotating the adjusting rod to drive the piston rod to axially move, so that the stepless adjustment of the output flow of the lubricating oil is realized.

Description

Technical Field

[0001] This application relates to the field of oilers, and more particularly to a single-line oiler. Background Technology

[0002] Traditional lubricators typically employ a fixed flow rate design, delivering lubricating oil through pre-defined oil passage structures and pressures. However, in practical applications, different equipment or different operating conditions of the same equipment have varying lubricating oil requirements. A fixed flow rate lubrication method cannot meet the need for flexible adjustments, potentially leading to insufficient lubrication or wasted lubricating oil.

[0003] Therefore, there is a need for a single-line oil injector that allows for easy adjustment of the output. Utility Model Content

[0004] In view of this, it is necessary to provide a single-line oiler that is easy to adjust the output to solve the above problems.

[0005] Embodiments of this application provide a single-line oil injector, comprising:

[0006] The oil injection pipe has an oil outlet chamber along its axial direction and an oil outlet along its radial direction.

[0007] The first adjusting rod is rotatably sleeved on one end of the oil injection pipe;

[0008] The piston rod is slidably disposed in the oil outlet chamber, with one end of the piston rod extending out of the oil injection pipe and able to abut against the first adjusting rod, and the other end extending into the oil outlet chamber;

[0009] An oil inlet branch pipe is located at the other end of the oil injection pipe and can abut against the other end of the piston rod;

[0010] The oil injection pipe has a first blocking part located inside the oil outlet chamber. The oil inlet branch pipe passes through the first blocking part. When the first adjusting rod moves axially along the oil injection pipe, the first adjusting rod pushes the piston rod to slide, thereby compressing the oil outlet chamber.

[0011] In at least one embodiment of this application, the oil injection pipe is further provided with an oil inlet pipe and a first oil storage chamber. The first oil storage chamber is located at one end near the first adjusting rod. Along the axial direction, the oil inlet pipe and the oil outlet chamber are spaced apart. One end of the oil inlet pipe is connected to the oil inlet branch pipe, and the other end is connected to the first oil storage chamber.

[0012] The first oil storage chamber is connected to the oil outlet chamber, and one end of the piston rod is placed in the first oil storage chamber, while the other end extends into the oil outlet chamber.

[0013] In at least one embodiment of this application, the single-line oil injector further includes a second adjusting rod, which is rotatably sleeved on the oil injection pipe and located away from one end of the first adjusting rod; the oil inlet branch pipe is sleeved on the second adjusting rod.

[0014] The oil injection pipe also includes a second oil storage chamber, which is connected to both the oil inlet pipe and the oil outlet chamber. One end of the oil inlet branch pipe is located in the second oil storage chamber, and the other end is located in the oil outlet chamber.

[0015] In at least one embodiment of this application, the oil injection pipe further includes a first locking member, a second locking member, and the oil injection pipe body. The first locking member and the second locking member are sequentially sleeved on the oil injection pipe body, and the first adjusting rod is rotatably sleeved on the first locking member.

[0016] In at least one embodiment of this application, the piston rod includes a sliding plug, a first abutting rod disposed at one end of the sliding plug, and a second abutting rod disposed at the other end of the sliding plug. Along the axial direction, the first abutting rod passes through the second locking member, the first locking member, and the first adjusting rod in sequence, and can abut against the first adjusting rod. The sliding plug is disposed opposite to the first blocking part, and the second abutting rod is disposed in the oil outlet chamber and can abut against the oil inlet branch pipe.

[0017] In at least one embodiment of this application, the first adjusting rod has a viewing port opened in the radial direction and a threaded groove in the axial direction, the threaded groove being located at one end near the first locking member and sleeved inside the first locking member, and the viewing port being located at one end away from the first locking member.

[0018] In at least one embodiment of this application, the first blocking part has a first sliding port, one end of the piston rod passes through the first sliding port, and the first blocking part is disposed opposite to the piston rod and surrounds the oil injection pipe to form the first oil storage chamber.

[0019] In at least one embodiment of this application, the second locking member has a second blocking part, the second blocking part has a second sliding port, one end of the oil inlet branch pipe is provided at the second sliding port and extends into the oil outlet chamber, and the second blocking part is arranged opposite to the second adjusting rod and surrounds the oil injection pipe to form the second oil storage chamber.

[0020] In at least one embodiment of this application, the single-line oil injector further includes a spring member, which is sleeved on the second abutment rod and the oil inlet branch pipe, with one end of the spring member disposed on the sliding plug and the other end disposed on the second blocking part.

[0021] In at least one embodiment of this application, the single-line oil injector further includes a connector disposed on the second adjusting rod.

[0022] The single-line lubricator described above is designed to consist of an oil injection pipe, a first adjusting rod, a piston rod, and an inlet branch pipe. The oil injection pipe has an axially oriented oil outlet chamber and a radially oriented oil outlet. The first adjusting rod is rotatably fitted onto the end of the oil injection pipe. The piston rod is slidably disposed within the oil outlet chamber and is linked to the adjusting rod. The inlet branch pipe passes through a first blocking section within the oil injection pipe and engages with the piston rod. By rotating the adjusting rod to drive the piston rod axially, the volume of the oil outlet chamber is changed, thereby achieving stepless adjustment of the lubricating oil output flow rate. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of a single-line oil injector in an embodiment of this application.

[0024] Figure 2 This is a cross-sectional view of a single-line oil injector.

[0025] Figure 3 This is a cross-sectional view of the oil injection pipe, piston rod, and oil inlet branch pipe.

[0026] Figure 4 This is a schematic diagram of the connector and single-line lubricator.

[0027] Explanation of main component symbols

[0028] 100. A single-line oil injector; 10. Oil injection pipe; 10a. Oil outlet chamber; 10b. Oil outlet; 20. First adjusting rod; 30. Piston rod; 40. Oil inlet branch pipe; 11. First blocking part; 12. Oil inlet pipe; 13. First oil storage chamber; 50. Second adjusting rod; 14. Second oil storage chamber; 15. First locking member; 16. Second locking member; 31. Sliding plug; 32. First abutting rod; 33. Second abutting rod; 21. Viewing port; 22. Threaded groove; 11a. First sliding port; 161. Second blocking part; 161a. Second sliding port; 60. Spring member; 70. Connector. Detailed Implementation

[0029] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0030] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0031] Embodiments of this application provide a single-line oil injector.

[0032] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] according to Figures 1-4 This application provides a single-line oil injector 100, including: an oil injection pipe 10, a first adjusting rod 20, a piston rod 30, and an oil inlet branch pipe 40.

[0034] The oil injection pipe 10 has an oil outlet chamber 10a along its axial direction and an oil outlet 10b along its radial direction. A first adjusting rod 20 is rotatably sleeved on one end of the oil injection pipe 10. A piston rod 30 is slidably disposed in the oil outlet chamber 10a, with one end of the piston rod 30 extending out of the oil injection pipe 10 and abutting against the first adjusting rod 20, and the other end extending into the oil outlet chamber 10a. An oil inlet branch pipe 40 is disposed at the other end of the oil injection pipe 10 and abuts against the other end of the piston rod 30. The oil injection pipe 10 has a first blocking part 11 disposed in the oil outlet chamber 10a, and the oil inlet branch pipe 40 passes through the first blocking part 11. When the first adjusting rod 20 moves along the axial direction of the oil injection pipe 10, the first adjusting rod 20 pushes the piston rod 30 to slide, thereby compressing the oil outlet chamber 10a.

[0035] Specifically, the axially oriented oil outlet chamber 10a is used to accommodate the piston rod 30 and store lubricating oil. When the piston rod 30 slides within the oil outlet chamber 10a, it can change the volume of the oil outlet chamber 10a, thereby realizing the delivery and flow regulation of lubricating oil. The radially oriented oil outlet 10b is the channel through which lubricating oil flows out from the lubricator, accurately delivering the lubricating oil to the parts that need lubrication.

[0036] Furthermore, after entering through the inlet branch pipe 40, the lubricating oil flows through the outlet chamber 10a to the outlet port 10b. The first blocking part 11 is used to fix and limit the stroke of the inlet branch pipe 40 and ensure the sealing of the outlet chamber 10a. This ensures that the outlet chamber 10a can be adjusted within a controllable range according to the piston rod 30, allowing the oil to enter the outlet chamber 10a stably, while also supporting the movement guidance of the piston rod 30. At the same time, the first blocking part 11 and other parts of the oil injection pipe 10 together enclose the structure of the outlet chamber 10a, playing a key role in the storage and transportation of lubricating oil.

[0037] Furthermore, the first adjusting rod 20 and the oil injection pipe 10 adopt a threaded structure. Through the threaded engagement of the first adjusting rod 20 and the oil injection pipe 10, an axial displacement of 1-1.5mm is generated for every 360° rotation, thereby realizing the conversion between the rotation and linear motion of the first adjusting rod 20. By rotating the axial distance between the first adjusting rod 20 and the oil injection pipe 10, the position of the piston rod 30 can be changed to achieve linear flow regulation.

[0038] Furthermore, when the piston rod 30 abuts against the first blocking part 11, the volume of the oil outlet chamber 10a is at its maximum, the sliding displacement of the piston rod 30 in the oil outlet chamber 10a is also at its maximum, and the corresponding output is also at its maximum.

[0039] In summary, when it is necessary to adjust the output of lubricating oil, the operator rotates the first adjusting rod 20. During rotation, the first adjusting rod 20 moves axially along the oil injection pipe 10. As the first adjusting rod 20 continues to move, it pushes the piston rod 30 to slide within the oil outlet chamber 10a. Because the piston rod 30 can abut against the oil inlet branch pipe 40 when sliding, the sliding range of the piston rod 30 is limited, allowing it to slide only within the oil outlet chamber 10a. When the piston rod 30 slides branchwise towards the oil inlet pipe 12, the volume of the oil outlet chamber 10a gradually decreases, and the lubricating oil is compressed. At this time, the oil chamber of the oil inlet branch pipe 40 continues to replenish lubricating oil into the outlet chamber, but due to the decrease in the volume of the oil outlet chamber 10a, excess lubricating oil flows out from the oil outlet 10b opened radially along the oil injection pipe 10, thus achieving lubricating oil delivery. By controlling the rotation angle and movement distance of the first adjusting rod 20, the position of the piston rod 30 in the oil outlet chamber 10a can be precisely adjusted, thereby changing the volume of the oil outlet chamber 10a and realizing the adjustment of the output of lubricating oil.

[0040] In one specific embodiment, the oil injection pipe 10 is further provided with an oil inlet pipe 12 and a first oil storage chamber 13. The first oil storage chamber 13 is located at one end near the first adjusting rod 20. Along the axial direction, the oil inlet pipe 12 and the oil outlet chamber 10a are spaced apart. One end of the oil inlet pipe 12 is connected to the oil inlet branch pipe 40, and the other end is connected to the first oil storage chamber 13. The first oil storage chamber 13 communicates with the oil outlet chamber 10a, and one end of the piston rod 30 is placed in the first oil storage chamber 13, and the other end extends into the oil outlet chamber 10a.

[0041] Specifically, the oil passage is spaced apart from the oil outlet chamber 10a along the axial direction, forming an independent oil passage and providing separate oil supply from the oil outlet chamber 10a. The first oil storage chamber 13 serves as a temporary oil storage space, quickly replenishing oil when the piston rod 30 retracts, avoiding delays in oil absorption in the cavity. The first oil storage chamber 13 is connected to the oil outlet chamber 10a, allowing the lubricating oil to flow freely between them. When the piston rod 30 slides within the oil outlet chamber 10a, changing its volume, lubricating oil enters the first oil storage chamber 13 from the oil inlet pipe 12 to propel the piston rod 30 and store the lubricating oil.

[0042] Furthermore, when a portion of the lubricating oil enters from the inlet branch pipe 40, the inlet branch pipe 40 blocks this portion of lubricating oil from entering the outlet chamber 10a, causing this portion of lubricating oil to first pass through the inlet pipe 12 and continue flowing into the first storage chamber 13. As the lubricating oil continues to flow into the first storage chamber 13, the pressure in the first storage chamber 13 increases, pushing the piston rod 30 to slide. Simultaneously, as the piston rod 30 slides towards the inlet straight pipe, the lubricating oil in the outlet chamber 10a flows out from the outlet port 10b. At the same time, when the first adjusting rod 20 rotates, the volume of the outlet chamber 10a decreases, reducing the sliding displacement of the piston rod 30, thereby reducing the output amount of lubricating oil per output.

[0043] In one specific embodiment, the single-line oil injector further includes a second adjusting rod 50, which is rotatably sleeved on the oil injection pipe 10 and located away from the end of the first adjusting rod 20. The oil inlet branch pipe 40 is sleeved on the second adjusting rod 50. The oil injection pipe 10 further includes a second oil storage chamber 14, which is connected to both the oil inlet pipe 12 and the oil outlet chamber 10a. One end of the oil inlet branch pipe 40 is located in the second oil storage chamber 14, and the other end is located in the oil outlet chamber 10a.

[0044] Specifically, the second adjusting rod 50 is threadedly engaged with the oil injection pipe 10 to adjust the spatial clearance of the second oil storage chamber 14 between the second adjusting rod 50 and the oil injection pipe 10, thereby adjusting the position of the oil inlet branch pipe 40 in the second oil storage chamber 14. This changes the path and flow rate of lubricating oil into the oil injection pipe 10. At the same time, the second adjusting rod 50 also provides a certain degree of support and fixation for the oil inlet branch pipe 40, ensuring its stability.

[0045] Furthermore, when the second adjusting rod 50 is rotated and slids closer to the piston rod 30, the second adjusting rod 50 drives the oil inlet branch pipe 40 to block the flow between the second oil storage chamber 14 and the oil outlet chamber 10a, so that the lubricating oil in the oil outlet chamber 10a flows out from the oil outlet 10b.

[0046] When the second adjusting rod 50 is rotated and slid away from the piston rod 30, the second adjusting rod 50 drives the oil inlet branch pipe 40 to connect the second oil storage chamber 14 and the oil outlet chamber 10a, so that the lubricating oil flows from the first oil storage chamber 13 through the oil inlet and outlet pipes 12 and the second oil storage chamber 14, and through the oil inlet branch pipe 40 to the oil outlet chamber 10a.

[0047] In one specific embodiment, the oil injection pipe 10 further includes a first locking member 15, a second locking member 16 and the body of the oil injection pipe 10. The first locking member 15 and the second locking member 16 are sequentially sleeved on the oil injection pipe 10, and the first adjusting rod 20 is rotatably sleeved on the first locking member 15.

[0048] Specifically, the first locking element 15 is a nut, and the second locking element 16 is an internally hollow bolt structure. The second locking element 16 is connected to the oil injection pipe 10 via a threaded connection, and the first locking element 15 is connected through the threaded connection of the second locking element 16. By adjusting the position of the first adjusting rod 20 through its threaded connection with the first locking element 15, the sliding distance of the piston rod 30 within the oil outlet chamber 10a can be adjusted.

[0049] In one specific embodiment, the piston rod 30 includes a sliding plug 31, a first abutting rod 32 disposed at one end of the sliding plug 31, and a second abutting rod 33 disposed at the other end of the sliding plug 31. Along the axial direction, the first abutting rod 32 passes through the second locking member 16, the first locking member 15, and the first adjusting rod 20 in sequence, and can abut against the first adjusting rod 20. The sliding plug 31 is disposed opposite to the first blocking part 11, and the second abutting rod 33 is disposed in the oil outlet chamber 10a and can abut against the oil inlet branch pipe 40.

[0050] Specifically, the sliding plug 31 is the main body of the piston rod 30. It slides within the oil outlet chamber 10a, playing a crucial role in changing the volume of the oil outlet chamber 10a. When the sliding plug 31 moves within the oil outlet chamber 10a, it correspondingly changes the size of the oil outlet chamber 10a, thereby adjusting the output of lubricating oil. One end of the first abutting rod 32 is connected to the sliding plug 31, and it passes through the second locking member 16, the first locking member 15, and the first adjusting rod 20 in sequence, and abuts against the first adjusting rod 20. Its main function is to transmit the axial movement of the first adjusting rod 20 to the sliding plug 31, allowing the sliding plug 31 to slide within the oil outlet chamber 10a. When the first adjusting rod 20 rotates, it generates axial displacement through threaded engagement. The first abutting rod 32 transmits this displacement to the sliding plug 31, pushing the sliding plug 31 to move, thereby limiting the displacement distance of the piston rod 30.

[0051] Furthermore, the second abutment rod 33 is located at the other end of the sliding plug 31, within the oil outlet chamber 10a, and abuts against the oil inlet branch pipe 40. Its function is to limit the sliding range of the sliding plug 31 and to interact with the oil inlet branch pipe 40 when the sliding plug 31 slides. When the sliding plug 31 slides towards the oil inlet branch pipe 40, the second abutment rod 33 pushes the lubricating oil within the oil inlet branch pipe 40, causing it to enter the oil outlet chamber 10a.

[0052] In one specific embodiment, the first adjusting rod 20 has a viewing port 21 opened in the radial direction and a threaded groove 22 opened in the axial direction. The threaded groove 22 is located at one end close to the first locking member 15 and is sleeved inside the first locking member 15. The viewing port 21 is located at one end away from the first locking member 15.

[0053] Specifically, the viewing port 21 provides an observation window for the operator, through which the operator can directly observe the relative positional relationship between the first adjusting rod 20 and the first locking member 15, as well as the rotation of the first adjusting rod 20. When adjusting the lubricating oil output, the operator can accurately determine whether the first adjusting rod 20 has rotated to the required position based on the information observed through the viewing port 21. The threaded groove 22 is located near one end of the first locking member 15 and is fitted inside the first locking member 15. It cooperates with the first locking member 15, and when the first locking member 15 is tightened, the threaded groove 22 can enhance the connection strength and stability between the first adjusting rod 20 and the first locking member 15. At the same time, when it is necessary to disassemble or replace the first adjusting rod 20, the design of the threaded groove 22 also facilitates the separation of the first adjusting rod 20 from the first locking member 15.

[0054] In one specific embodiment, the first blocking part 11 has a first sliding port 11a, one end of the piston rod 30 passes through the first sliding port 11a, and the first blocking part 11 is arranged opposite to the piston rod 30 and surrounds the oil injection pipe 10 to form the first oil storage chamber 13.

[0055] Specifically, the first sliding port 11a provides a sliding channel for one end of the piston rod 30, allowing the piston rod 30 to slide smoothly within the oil outlet chamber 10a. At the same time, it also limits the sliding range of the piston rod 30, preventing it from deviating from its axial direction during sliding and ensuring the stability and accuracy of the piston rod 30's sliding.

[0056] Furthermore, the first blocking part 11, the piston rod 30, and the oil injection pipe 10 together form a first oil storage chamber 13. The first oil storage chamber 13 serves as a temporary oil storage space, allowing for rapid replenishment of lubricating oil when the piston rod 30 retracts. When the piston rod 30 slides away from the oil inlet branch pipe 40, the volume of the oil outlet chamber 10a increases, and the lubricating oil in the first oil storage chamber 13 flows into the oil outlet chamber 10a through channels such as the oil inlet pipe 12.

[0057] In one specific embodiment, the second locking member 16 has a second blocking part 161, the second blocking part 161 has a second sliding port 161a, one end of the oil inlet branch pipe 40 is provided in the second sliding port 161a and extends into the oil outlet chamber 10a, and the second blocking part 161 is arranged opposite to the second adjusting rod 50 and surrounds the oil injection pipe 10 to form the second oil storage chamber 14.

[0058] Specifically, the second blocking part 161 divides the oil outlet chamber 10a into two parts: one part is the main body of the oil outlet chamber 10a, and the other part forms the second oil storage chamber 14 with the second adjusting rod 50. The second sliding port 161a provides an installation channel for one end of the oil inlet branch pipe 40, allowing the oil inlet branch pipe 40 to pass through the second sliding port 161a and extend into the oil outlet chamber 10a.

[0059] In one specific embodiment, the single-line oil injector further includes a spring member 60, which is sleeved on the second abutment rod 33 and the oil inlet branch pipe 40, with one end of the spring member 60 disposed on the sliding plug 31 and the other end disposed on the second blocking part 161.

[0060] Specifically, the spring 60 can apply an elastic force to the sliding plug 31. When the piston rod 30 slides due to an external force (such as the push of the first adjusting rod 20), the spring 60 will generate corresponding extension and contraction deformation according to the position change of the sliding plug 31, thereby generating an elastic force to balance the external force and playing a role in buffering and resetting.

[0061] Furthermore, when lubricating oil enters the first oil storage chamber 13 through the oil inlet pipe 12, the lubricating oil in the first oil storage chamber 13 pushes the piston rod 30 to slide in the oil outlet chamber 10a, causing the lubricating oil in the oil outlet chamber 10a to flow out from the oil outlet 10b. When the piston rod 30 slides to abut against the oil inlet branch pipe 40, the spring member 60 is compressed and generates a certain elastic force, causing the piston rod 30 to slide in the opposite direction, thereby compressing the lubricating oil in the first oil storage chamber 13 and passing it through the oil inlet pipe 12 and the second oil storage chamber 14 into the oil outlet chamber 10a.

[0062] In one specific embodiment, the single-line oil injector further includes a connector 70, which is disposed on the second adjusting rod 50.

[0063] Specifically, connector 70 is used to connect multiple single-line lubricators in series, thereby allowing the output of one or more lubricators to be transferred to another lubricator, increasing the output for large bearings. This enables lubricating oil to flow between multiple lubricators, achieving flow superposition and integration. When lubrication of components such as large bearings is required, the output of a single lubricator may not be sufficient. By connecting multiple lubricators in series, the output of lubricating oil can be effectively increased to meet the lubrication requirements of large components.

[0064] Therefore, the single-line lubricator 100 provided above is designed to consist of an oil injection pipe 10, a first adjusting rod 20, a piston rod 30, and an oil inlet branch pipe 40. The oil injection pipe 10 has an axially formed oil outlet chamber 10a and a radially formed oil outlet port 10b. The first adjusting rod 20 is rotatably fitted onto the end of the oil injection pipe 10. The piston rod 30 is slidably disposed within the oil outlet chamber 10a and is linked with the adjusting rod. The oil inlet branch pipe 40 passes through a first blocking part 11 within the oil injection pipe 10 and cooperates with the piston rod 30. By rotating the adjusting rod to drive the piston rod 30 to move axially, the volume of the oil outlet chamber 10a is changed, thereby achieving stepless adjustment of the lubricating oil output flow rate.

[0065] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. A single-line oil injector, characterized in that, include: The oil injection pipe has an oil outlet chamber along its axial direction and an oil outlet along its radial direction. The first adjusting rod is rotatably sleeved on one end of the oil injection pipe; The piston rod is slidably disposed in the oil outlet chamber, with one end of the piston rod extending out of the oil injection pipe and able to abut against the first adjusting rod, and the other end extending into the oil outlet chamber; An oil inlet branch pipe is located at the other end of the oil injection pipe and can abut against the other end of the piston rod; The oil injection pipe has a first blocking part located inside the oil outlet chamber. The oil inlet branch pipe passes through the first blocking part. When the first adjusting rod moves axially along the oil injection pipe, the first adjusting rod pushes the piston rod to slide, thereby compressing the oil outlet chamber.

2. A single-line oil injector according to claim 1, characterized in that, The oil injection pipe is also provided with an oil inlet pipe and a first oil storage chamber. The first oil storage chamber is located at one end near the first adjusting rod. Along the axial direction, the oil inlet pipe and the oil outlet chamber are spaced apart. One end of the oil inlet pipe is connected to the oil inlet branch pipe, and the other end is connected to the first oil storage chamber. The first oil storage chamber is connected to the oil outlet chamber, and one end of the piston rod is placed in the first oil storage chamber, while the other end extends into the oil outlet chamber.

3. A single-line oil injector according to claim 2, characterized in that, The single-line oil injector also includes a second adjusting rod, which is rotatably sleeved on the oil injection pipe and located away from the end of the first adjusting rod. The oil inlet branch pipe is sleeved on the second adjusting rod. The oil injection pipe also includes a second oil storage chamber, which is connected to both the oil inlet pipe and the oil outlet chamber. One end of the oil inlet branch pipe is located in the second oil storage chamber, and the other end is located in the oil outlet chamber.

4. A single-line oil injector according to claim 3, characterized in that, The oil injection pipe also includes a first locking member, a second locking member, and the oil injection pipe body. The first locking member and the second locking member are sequentially sleeved on the oil injection pipe body, and the first adjusting rod is rotatably sleeved on the first locking member.

5. A single-line oil injector according to claim 4, characterized in that, The piston rod includes a sliding plug, a first abutting rod disposed at one end of the sliding plug, and a second abutting rod disposed at the other end of the sliding plug. Along the axial direction, the first abutting rod passes through the second locking member, the first locking member, and the first adjusting rod in sequence, and can abut against the first adjusting rod. The sliding plug is disposed opposite to the first blocking part, and the second abutting rod is disposed in the oil outlet chamber and can abut against the oil inlet branch pipe.

6. A single-line oil injector according to claim 4, characterized in that, The first adjusting rod has a viewing port opened in the radial direction and a threaded groove in the axial direction. The threaded groove is located at one end near the first locking member and is sleeved inside the first locking member. The viewing port is located at one end away from the first locking member.

7. A single-line oil injector according to claim 2, characterized in that, The first blocking part has a first sliding port, one end of the piston rod passes through the first sliding port, and the first blocking part is arranged opposite to the piston rod and surrounds the oil injection pipe to form the first oil storage chamber.

8. A single-line oil injector according to claim 5, characterized in that, The second locking member has a second blocking part, the second blocking part has a second sliding port, one end of the oil inlet branch pipe is located at the second sliding port and extends into the oil outlet chamber, and the second blocking part is arranged opposite to the second adjusting rod and surrounds the oil injection pipe to form the second oil storage chamber.

9. A single-line oil injector according to claim 8, characterized in that, The single-line oil injector also includes a spring element, which is sleeved on the second abutment rod and the oil inlet branch pipe, with one end of the spring element located on the sliding plug and the other end located on the second blocking part.

10. A single-line oil injector according to claim 3, characterized in that, The single-line oil injector also includes a connector, which is disposed on the second adjusting rod.

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