Compressor cylinder body center hole oil injection device
By spraying oil into the bearing holes of the compressor cylinder using an oil spraying device and recovering excess oil, the problems of contaminating the piston holes and shedding brush bristles during the oiling process are solved. This achieves automated and uniform oiling, improving the quality and efficiency of the compressor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MAANSHAN AOTECAR TECH CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-19
AI Technical Summary
In the prior art, the oiling process for the bearing bores of the compressor cylinder block is prone to contaminating the piston bores inside the cylinder, and the brush brushes are prone to shedding lint, which becomes foreign matter and affects the quality of the compressor.
An oil spraying device is adopted, including an oil spraying base, an oil spraying head, an oil return groove, and an oil spraying channel. The oil spraying head sprays the inner wall of the bearing hole, and excess oil is recycled to the oil return groove. The outer oil sleeve rotates to spray oil evenly, and the opening and closing of the oil spraying channel is controlled by a sealing ring and a pressure plate to prevent oil from splashing out.
It achieves uniform spraying of the inner wall of the bearing hole, avoids oil contamination of the piston hole, reduces the risk of brush shedding, improves the automation and precision of the oiling process, and ensures the internal cleanliness of the compressor.
Smart Images
Figure CN224253211U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of compressor manufacturing technology, and in particular relates to an oil injection device for the center hole of a compressor cylinder. Background Technology
[0002] In the compressor manufacturing process, the previous method for applying oil to the cylinder bearing bores involved workers using a brush to apply oil evenly to the bores. However, this process has significant drawbacks: the brushes tend to shed bristles during application, and these bristles can fall into the bores, becoming foreign objects inside the compressor and potentially causing quality problems.
[0003] CN118162299A discloses a surface atomizing oil spraying device for gearbox shaft parts, which requires oil spraying treatment inside the oil spray cover. This is particularly relevant when performing oil spraying operations on cylinder bearing holes. Figure 9 The bearing bore at point A is prone to oil splashing out from the top of the bearing bore, which can easily contaminate the piston bore in the cylinder. Utility Model Content
[0004] The technical problem to be solved by this utility model is: how to ensure that the oiling operation of the bearing bore of the compressor cylinder does not contaminate the piston bore inside the cylinder.
[0005] To solve the above-mentioned technical problems, the inventors of this utility model, through practice and summarization, have derived the technical solution of this utility model, which adopts the following technical solution:
[0006] A compressor cylinder center hole oil injection device includes an oil injection seat, an oil injection head and an oil return groove distributed around the oil injection head, the oil injection head has multiple oil injection ports evenly distributed circumferentially, a conical plug is provided on the top of the oil injection head, the oil injection seat is provided with an oil return channel and an oil inlet channel, the oil return channel is connected to the oil return groove, and the oil inlet channel is connected to the oil injection head.
[0007] In a more preferred embodiment, the fuel injector includes an inner oil seat mounted on the fuel injector base and connected to the fuel inlet channel. An outer oil sleeve is distributed on the outer side of the inner oil seat. The top of the outer oil sleeve and a conical plug are rotatably mounted. A pressure plate is rotatably connected to the bottom of the outer oil sleeve. The outer oil sleeve and the inner oil seat are in sliding fit and the sides are evenly distributed with fuel injection channels.
[0008] In a better embodiment, the oil injection channels on the outer oil sleeve are all horizontally inclined in one direction.
[0009] In a more preferred embodiment, the top of the inner oil seat is a closed structure, and a spring is installed between the conical plug and the top of the inner oil seat.
[0010] The bottom of the conical plug and the bottom of the outer oil sleeve are provided with downwardly extending extensions. The top of the outer oil sleeve is rotatably installed inside the extension of the conical plug, and the top of the pressure plate is rotatably installed inside the extension of the conical plug.
[0011] In a more preferred embodiment, three sets of sealing rings are vertically distributed on the inner wall of the outer oil sleeve, with the two sets of sealing rings located in the middle and upper parts distributed on the upper and lower sides of the oil injection channel on the inner wall of the outer oil sleeve.
[0012] In a more preferred embodiment, a guide post is provided on the pressure plate, and the guide post and the oil injection seat slide together, with a limit body provided at the bottom of the guide post.
[0013] In a more preferred embodiment, the top of the fuel injector is provided with a boss, and the bottom of the pressure plate is equipped with a constraint ring. The constraint ring is slidably fitted on the outside of the boss, and the top surface of the fuel injector located on the outside of the boss is obliquely downward along the direction close to the return oil groove.
[0014] In a more preferred embodiment, the top surface of the pressure plate is provided with capillary drainage grooves.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] 1. In this utility model, an oil injector head is installed on the oil injector seat, and the top of the oil injector head is sealed with a conical plug to prevent oil from splashing out and contaminating the piston hole.
[0017] 2. In this utility model, the oil sprayed by the oil nozzle is sprayed into the bearing hole. Excess oil will drip from the bearing hole and enter the oil return tank for recycling.
[0018] 3. In this utility model, the oil spray head adopts an outer oil sleeve and a pressure plate. The oil is sprayed into the bearing hole through the oil spray channel on the inner oil seat and the outer oil sleeve by the oil pressure. The outer oil sleeve is rotated at the same time as the oil is sprayed, which can achieve uniform oil spraying.
[0019] 4. In this utility model, when the pressure plate is subjected to the weight of the cylinder, it compresses the spring component, causing the outer oil sleeve to move downwards, and the upper and middle sealing rings to move downwards as well. This connects the oil injection channels on the outer oil sleeve and the inner oil seat. The oil pressure passes through the inner oil seat, through the oil injection channel, through the area between the two sets of sealing rings, and then through the oil injection channel on the outer oil sleeve to be sprayed onto the inner wall of the bearing hole. After the oil injection is completed and the cylinder body is removed, the spring component moves the conical plug upwards, and the middle and lower sealing rings move upwards, thereby sealing the upper and lower sides of the oil injection channel on the inner oil seat. This completes the cutting off of the oil injection channels between the outer oil sleeve and the inner oil seat. When the cylinder body is placed back on the pressure plate, the two oil injection channels will be reconnected, and oil injection will be performed again.
[0020] 5. In this utility model, the upward movement of the pressure plate is constrained by the limiting body, thereby ensuring that the area enclosed by the sealing rings in the middle and lower parts is sealed to block the oil injection channel on the inner oil seat.
[0021] 6. In this utility model, after the bearing hole is sprayed with oil, the excess oil drips from the bearing hole onto the pressure plate, then drips through the capillary drainage groove onto the protrusion on the outer side of the oil spray seat, and then enters the recovery tank at an angle, thus completing the recovery of excess oil. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;
[0023] Figure 2 This is a top view of the overall structure of this utility model;
[0024] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;
[0025] Figure 4 This is a cross-sectional view of the fuel injector of this utility model from one perspective.
[0026] Figure 5 This is a cross-sectional view of the fuel injector of this utility model from another perspective.
[0027] Figure 6 This is a diagram showing the distribution of bosses on the fuel injector seat of this utility model;
[0028] Figure 7 This is an inverted view of the fuel injector of this utility model;
[0029] Figure 8 This is a diagram showing the distribution of the fuel injection channel structure of the fuel injector head of this utility model;
[0030] Figure 9 This indicates the oil injection position in the bearing bore.
[0031] In the diagram: 10. Injector seat; 11. Injector head; 12. Oil return groove; 13. Conical plug; 14. Oil return channel; 15. Oil inlet channel; 16. Inner oil seat; 17. Outer oil sleeve; 18. Pressure plate; 19. Injection channel; 110. Spring component; 111. Extension body; 112. Sealing ring; 113. Guide post; 114. Limiting body; 115. Boss; 116. Constraint ring. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0034] Example 1
[0035] like Figure 1 and Figure 2 As shown, a compressor cylinder center hole oil injection device includes an oil injection seat 10, an oil injection head 11 and an oil return groove 12 distributed around the oil injection head 11 are mounted on the oil injection seat 10, the oil injection head 11 has multiple oil injection ports evenly distributed circumferentially, a conical plug 13 is provided on the top of the oil injection head 11, and an oil return channel 14 and an oil inlet channel 15 are provided inside the oil injection seat 10. The oil return channel 14 is connected to the oil return groove 12, and the oil inlet channel 15 is connected to the oil injection head 11.
[0036] The return oil channel 14 is connected to the return oil tank via the return oil pipe, and the inlet oil channel 15 is connected to the oil pump via the inlet oil pipe. The bearing hole of the cylinder is placed above the injector head 11, and the conical plug 13 is sealed on the top of the bearing hole to prevent oil from splashing out from the top of the bearing hole and contaminating the piston hole. The oil is sprayed onto the inner wall of the bearing hole through the injection port of the injector head 11. Excess oil will drip onto the injector seat 10 and enter the return oil groove 12 for recycling.
[0037] Example 2
[0038] In Example 1, as Figures 3 to 7 As shown, the fuel injector 11 includes an inner oil seat 16 installed on the fuel injector seat 10 and connected to the fuel inlet channel 15. An outer oil sleeve 17 is distributed on the outer side of the inner oil seat 16. The top of the outer oil sleeve 17 and the conical plug 13 are rotatably installed. A pressure plate 18 is rotatably connected to the bottom of the outer oil sleeve 17. The outer oil sleeve 17 and the inner oil seat 16 are slidably fitted and fuel injection channels 19 are evenly distributed on the side.
[0039] like Figure 8 As shown, the oil injection channels 19 on the outer oil sleeve 17 are all horizontally inclined in one direction.
[0040] The bearing hole of the cylinder is fitted onto the outside of the injector head 11, and the top of the bearing hole is sealed by the conical plug 13. At the same time, the bottom of the cylinder contacts the pressure plate 18. Oil with a certain pressure is injected through the oil injection channel 19 on the inner oil seat 16 and the oil injection channel 19 on the outer oil sleeve 17 to drive the outer oil sleeve 17 to rotate. While rotating, the inner wall of the bearing hole can be rotated to perform uniform oil injection.
[0041] In both of the above methods, firstly, the cylinder block to be injected is placed on the outside of the injector head 11 on the injector seat 10, ensuring that the bearing hole is accurately aligned with the injector head 11, and the top of the bearing hole is sealed by the tapered plug 13.
[0042] The time relay control module is electrically connected to the oil injection drive mechanism inside the oil injection unit via electrical wiring, enabling precise transmission of control signals. After the equipment is turned on, the time relay control module is powered on and sends commands to the oil injection drive mechanism inside the injector head 11 according to the preset oil injection duration parameters. Upon receiving the signal, the oil injection drive mechanism sprays lubricating oil into the bearing hole. Under the precise control of the time relay control module, the injector head 11 continuously and stably sprays oil until the set time is reached, at which point the oil injection automatically stops. Throughout the process, the front and rear cylinders are sprayed simultaneously, eliminating the need for manual brush application. This avoids the risk of brush bristles causing foreign matter buildup and achieves high efficiency and precision in the oil injection process through automated control, effectively solving the problems associated with traditional oiling processes.
[0043] Example 3
[0044] Unlike the solution in Example 2, this solution does not use a time relay control module, but instead employs a mechanical automatic oil injection system: For example... Figures 2 to 8 As shown, the top of the inner oil seat 16 is a closed structure, and a spring member 110 is installed between the conical plug 13 and the top of the inner oil seat 16.
[0045] The bottom of the conical plug 13 and the bottom of the outer oil sleeve 17 are provided with downwardly extending extensions 111. The top of the outer oil sleeve 17 is rotatably installed inside the extension 111 of the conical plug 13, and the top of the pressure plate 18 is rotatably installed inside the extension 111 of the conical plug 13. The extension 111 can prevent oil from entering the gap.
[0046] Three sets of sealing rings 112 are vertically distributed on the inner wall of the outer oil sleeve 17. The two sets of sealing rings 112 located in the middle and upper parts are distributed on the upper and lower sides of the oil injection channel 19 on the inner wall of the outer oil sleeve 17. The three sets of sealing rings 112 complete the disconnection and connection between the two oil injection channels 19.
[0047] The pressure plate 18 is provided with a guide post 113, which slides with the oil injection seat 10. A limit body 114 is provided at the bottom of the guide post 113.
[0048] The top of the fuel injector 10 is provided with a boss 115, and the bottom of the pressure plate 18 is equipped with a constraint ring 116. The constraint ring 116 is slidably engaged with the outside of the boss 115. The top surface of the fuel injector 10 located outside the boss 115 is obliquely downward along the direction close to the oil return groove 12. Through the inner and outer sliding engagement of the boss 115 and the constraint ring 116, oil is prevented from entering the gap and flowing out of the fuel injector 10.
[0049] The top surface of the pressure plate 18 is provided with a capillary drainage channel, which is used to guide excess oil into the return oil channel 12.
[0050] The cylinder block's weight causes the conical plug 13, pressure plate 18, and outer oil sleeve 17 to descend. Simultaneously, the pressure plate 18 descends relative to the boss 115 via the guide post 113 and contacts the surface of the fuel injector seat 10. The three sets of sealing rings 112 also descend at the same time. The original two sets of sealing rings 112 in the middle and lower part that blocked the fuel injection channel 19 on the inner oil seat 16 are now replaced by two sets of sealing rings 112 in the middle and upper part that surround the outside of the fuel injection channel 19 on the inner oil seat 16, connecting the fuel injection channel 19 on the outer oil sleeve 17 and the fuel injection channel 19 on the inner oil seat 16. Excess oil is guided to the return oil groove 12 through the capillary drainage groove, then returned through the return oil pipe and enters the return oil tank through the filter.
[0051] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.
Claims
1. A compressor cylinder center hole oil injection device, characterized in that, It includes an injector seat (10), on which an injector head (11) and an oil return groove (12) are installed. The injector head (11) has multiple injector ports evenly distributed around it. A conical plug (13) is provided on the top of the injector head (11). An oil return channel (14) and an oil inlet channel (15) are provided inside the injector seat (10). The oil return channel (14) is connected to the oil return groove (12), and the oil inlet channel (15) is connected to the injector head (11).
2. The compressor cylinder center hole oil injection device according to claim 1, characterized in that, The fuel injector (11) includes an inner oil seat (16) installed on the fuel injector seat (10) and connected to the fuel inlet channel (15). An outer oil sleeve (17) is distributed on the outer side of the inner oil seat (16). The top of the outer oil sleeve (17) and the conical plug (13) are rotatably installed. A pressure plate (18) is rotatably connected to the bottom of the outer oil sleeve (17). The outer oil sleeve (17) and the inner oil seat (16) are slidably fitted and fuel injection channels (19) are evenly distributed on the side.
3. The compressor cylinder center hole oil injection device according to claim 2, characterized in that, The oil injection channels (19) on the outer oil sleeve (17) are all horizontally inclined in one direction.
4. The compressor cylinder center hole oil injection device according to claim 2, characterized in that, The top of the inner oil seat (16) is a closed structure, and a spring (110) is installed between the conical plug (13) and the top of the inner oil seat (16). The bottom of the conical plug (13) and the bottom of the outer oil sleeve (17) are provided with a downwardly extending extension body (111). The top of the outer oil sleeve (17) is rotatably installed inside the extension body (111) of the conical plug (13), and the top of the pressure plate (18) is rotatably installed inside the extension body (111) of the conical plug (13).
5. The compressor cylinder center hole oil injection device according to claim 2, characterized in that, The inner wall of the outer oil sleeve (17) has three sets of sealing rings (112) distributed vertically. The two sets of sealing rings (112) located in the middle and upper parts are distributed on the upper and lower sides of the oil injection channel (19) on the inner wall of the outer oil sleeve (17).
6. The compressor cylinder center hole oil injection device according to claim 2, characterized in that, The pressure plate (18) is provided with a guide post (113), and the guide post (113) and the oil injection seat (10) are slidably engaged. A limit body (114) is provided at the bottom of the guide post (113).
7. The compressor cylinder center hole oil injection device according to claim 6, characterized in that, The top of the oil injection seat (10) is provided with a boss (115), and the bottom of the pressure plate (18) is provided with a constraint ring (116). The constraint ring (116) is slidably fitted on the outside of the boss (115). The top surface of the oil injection seat (10) located outside the boss (115) is obliquely downward along the direction close to the return oil groove (12).
8. The compressor cylinder center hole oil injection device according to claim 2, characterized in that, The top surface of the pressure plate (18) is provided with a capillary drainage groove.