Cylinder block with DLC wear-resistant coating
By applying DLC wear-resistant coating and guide port structure to the cylinder block, the wear problem of the cylinder block under harsh conditions is solved, the wear resistance and reliability of the parts are improved, and the wear rate and processing cost are reduced.
Patent Information
- Application Number
- CN202520296034.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing cylinder blocks are prone to wear and jamming under harsh operating conditions, leading to compressor failure. Existing surface treatment processes cannot effectively improve wear resistance.
By employing a DLC wear-resistant coating combined with structures such as flow guides and sliding plates, lubrication of friction parts is achieved, and a nanoscale DLC film is formed on the surface of the part through vapor deposition.
It effectively reduces the wear of parts, improves wear resistance and reliability, lowers the wear rate of parts, avoids jamming, and saves processing costs.
Smart Images
Figure CN223634861U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of cylinder, especially a cylinder seat with DLC wear -resistant coating. BACKGROUND
[0002] The compressor parts, such as cylinder seat, crankshaft, connecting rod, piston, all adopt the conventional surface treatment process such as phosphating or blackening, nitriding, and thus the surface wear resistance of the parts is low, the existing cylinder seat, crankshaft, connecting rod, piston and other moving pair parts all adopt the conventional surface treatment process such as phosphating or blackening, nitriding, steam, and the material is single, for example, the cylinder seat is gray cast iron, the piston is powder metallurgy, and the crankshaft is gray cast iron or nodular cast iron.
[0003] The processing technology of the parts takes the crankshaft as an example: the crankshaft has double support and single support two structure modes currently, the processing route of the double support structure crankshaft is: blank forging-rough machining-quenching-rough grinding-fine grinding-phosphating-polishing. The quenching treatment mode is used to improve the surface hardness of the crankshaft, ensure the wear resistance, strength and other performances of the crankshaft, and improve the reliability of the compressor, but the cost of the steel material and the quenching treatment crankshaft is high, and the processing route of the single support crankshaft structure is: sand casting-rough machining-rough grinding-fine grinding-phosphating-polishing.
[0004] The cylinder seat has the following defects: after using the conventional surface treatment process such as phosphating or blackening, nitriding, steam, the wear resistance of the cylinder seat cannot be guaranteed, especially on the commercial compressor, because of the harsh use conditions, the high environmental temperature, the large system pressure, the parts are very prone to damage, and thus the compressor failure such as jamming occurs, and therefore the cylinder seat with DLC wear -resistant coating is provided to solve the above problems. UTILITY MODEL CONTENTS
[0005] In order to make up for the above shortcomings, the utility model provides a cylinder seat with DLC wear -resistant coating, which aims at improving the problems in the prior art that the parts are very prone to damage due to the harsh use conditions, the high environmental temperature and the large system pressure, and thus the compressor failure such as jamming occurs.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a cylinder seat with DLC wear -resistant coating, including cylinder seat main part, piston mouth, piston rod, the cylinder seat main part is provided with adjusting structure, adjusting structure includes oil tank, the oil tank is fixedly connected on the right side outer wall of cylinder seat main part, the top inner wall of cylinder seat main part is equipped with the guide port, the rear side inner wall of guide port is connected with the sliding plate of sliding, the right side outer wall of sliding plate is fixedly connected with compression spring, the right side inner wall of guide port is equipped with the oil guide hole, the right side inner wall of piston mouth is equipped with the liquid outlet, the left side outer wall of sliding plate is equipped with the bevel, adjusting structure includes auxiliary structure.
[0007] As a further description of the above technical solution: the auxiliary structure comprises a DLC wear-resistant coating, which is connected to the side outer wall of the piston rod.
[0008] As a further description of the above technical solution: the top inner wall of the oil tank is clamped with a refueling cover, and the side outer wall of the refueling cover is fixedly connected with a frosted pad.
[0009] As a further description of the above technical solution: the top outer wall of the flow guide hole is clamped with a top cover, and the end of the compression spring away from the sliding plate is fixedly connected to the right inner wall of the flow guide hole.
[0010] As a further description of the above technical solution: the sliding plate is slidingly connected to the rear inner wall of the liquid outlet, and the inclined surface is slidingly connected to the side outer wall of the piston rod.
[0011] As a further description of the above technical solution: the oil guide hole is in communication with the flow guide hole, and the liquid outlet is in communication with the flow guide hole.
[0012] As a further description of the above technical solution: the DLC wear-resistant coating is connected to the side outer wall of the cylinder seat body and the piston rod, respectively.
[0013] As a further description of the above technical solution: the piston port is provided in the top inner wall of the cylinder seat body, the bottom outer wall of the cylinder seat body is fixedly connected with a fixed foot, and the piston rod is slidingly connected to the top inner wall of the piston port.
[0014] The utility model has the following beneficial effects:
[0015] 1、The utility model discloses a flow guide hole, a sliding plate and other structures are arranged, the place where the cylinder and other components are rubbed is lubricated, the problem that the cylinder and components are seriously worn due to the large friction caused by the dryness of the friction surface during long-term transportation and friction of the cylinder and other components is solved.
[0016] 2、The utility model discloses a DLC wear-resistant coating, which has high hardness, good lubricating performance and low friction coefficient, and is verified by a large number of long-term reliability tests. The coating part has no obvious wear marks, and the size of the part after reliability test does not change obviously compared with before the test, which can solve the problem of abnormal wear and seizure of the moving pair parts of the compressor under long-term harsh working conditions. DRAWINGS
[0017] Figure 1 The utility model discloses a whole main view schematic diagram of a cylinder seat with a DLC wear-resistant coating is provided.
[0018] Figure 2The utility model provides a kind of overall side view schematic diagram of cylinder seat with DLC wear-resistant coating is proposed;
[0019] Figure 3 The utility model provides a kind of adjusting structure schematic diagram of cylinder seat with DLC wear-resistant coating is proposed;
[0020] Figure 4 The utility model provides a kind of auxiliary structure schematic diagram of cylinder seat with DLC wear-resistant coating is proposed.
[0021] Legend:
[0022] 1, cylinder seat main body;2, fixed foot;3, piston port;4, piston rod;5, adjusting structure;51, oil tank;52, oil cover;53, flow guide port;54, top cover;55, sliding plate;56, compression spring;57, oil guide hole;58, liquid outlet;59, bevel surface;6, auxiliary structure;61, DLC wear-resistant coating. Specific embodiments
[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0024] Reference Figures 1-3 The utility model provides an embodiment: a kind of cylinder seat with DLC wear-resistant coating, including cylinder seat main body 1, piston port 3, piston rod 4, cylinder seat main body 1 is provided with adjusting structure 5, is adjusting structure 5 including oil tank 51, oil tank 51 is fixedly connected in the right side outer wall of cylinder seat main body 1, by being provided with oil tank 51, it is convenient for personnel to fill cold oil, the top inner wall of cylinder seat main body 1 is opened with flow guide port 53, the rear inner wall of flow guide port 53 is slidably connected with sliding plate 55, the right side outer wall of sliding plate 55 is fixedly connected with compression spring 56, by being provided with compression spring 56, sliding plate 55 generates certain thrust, the right side inner wall of flow guide port 53 is opened with oil guide hole 57, the right side inner wall of piston port 3 is opened with liquid outlet 58, the left side outer wall of sliding plate 55 is opened with bevel surface 59, adjusting structure 5 includes auxiliary structure 6.
[0025] Reference Figures 2-4The top inner wall of the oil tank 51 is clamped with a refueling cover 52, the side outer wall of the refueling cover 52 is fixedly connected with a frosted pad, the top outer wall of the flow guide port 53 is clamped with a top cover 54, one end of the compression spring 56 away from the sliding plate 55 is fixedly connected to the right side inner wall of the flow guide port 53, the sliding plate 55 is slidingly connected to the rear side inner wall of the liquid outlet 58, the sliding plate 55 is extruded and shrunk after the liquid outlet 58 is set, so that the cold oil flows out of the liquid outlet 58, the bevel surface 59 is slidingly connected to the side outer wall of the piston rod 4, the bevel surface 59 is set to extrude the sliding plate 55 to move to the inside of the flow guide port 53 when the piston rod 4 is contacted, the oil guide hole 57 is in communication with the flow guide port 53, the liquid outlet 58 is in communication with the flow guide port 53, the piston port 3 is arranged in the top inner wall of the cylinder block body 1, the bottom outer wall of the cylinder block body 1 is fixedly connected with the fixed foot 2, and the piston rod 4 is slidingly connected to the top inner wall of the piston port 3.
[0026] With reference to Figures 3-4 The auxiliary structure 6 comprises a DLC wear-resistant coating 61, the DLC wear-resistant coating 61 is connected to the side outer wall of the piston rod 4, the material thickness of the DLC wear-resistant coating 61 is 0.001-0.003 mm, the DLC wear-resistant coating is added on the surface of the pair of moving parts, no subsequent process is needed after the coating, the precision of the part can be ensured, the wear-resistant performance can be effectively improved, the coating area can be freely selected, the whole coating is not needed, the cost is greatly saved, the DLC wear-resistant coating 61 is connected to the side outer wall of the cylinder block body 1 and the piston rod 4.
[0027] Working principle: when the piston rod 4 moves down, it contacts the inclined surface 59, which is extruded to drive the sliding plate 55 to move, and the sliding plate 55 moves away from the liquid outlet 58, and then the cold oil flows from the liquid outlet 58 to the outside of the piston port 3, lubricating the surface of the piston rod 4 and the piston port 3, increasing the smoothness of the contact between the piston rod 4 and the piston port 3, and reducing the wear between the piston rod 4 and the piston port 3. When the piston stops running during the piston process, the piston rod 4 is lifted to make the compression spring 56 push the sliding plate 55 to move, and the sliding plate 55 moves to close the liquid outlet 58, reducing oil leakage. At the same time, by placing the parts in a vacuum device, by heating carbon-containing gas to evaporate into a gaseous state, and then conveying it to the surface of the base material of the parts in a certain way, a DLC thin film is formed. This process is called vapor deposition, which has the advantages of being able to prepare nanoscale thin films with excellent performance and being able to uniformly coat complex-shaped substrates. Before depositing the DLC thin film, the substrate usually needs to be surface cleaned and pretreated. By applying a high-energy carbon ion beam, the oxide and other impurities on the surface of the substrate can be removed, and the adhesion between the coating and the substrate can be improved. In addition, due to the special properties of DLC coating, in order to solve the problem of easy stress and crack on the surface during application, a surface modification method is usually used to adjust the internal stress of the coating and reduce the occurrence of surface cracks by controlling the deposition process parameters such as temperature, gas flow and deposition rate.
[0028] Finally, it should be pointed out that the above-mentioned is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A cylinder block with DLC wear resistant coating comprising a cylinder block body (1), a piston port (3), a piston rod (4), characterized in that: The cylinder seat body (1) is provided with an adjusting structure (5), which is an adjusting structure (5) comprising an oil tank (51), the oil tank (51) is fixedly connected to the right side outer wall of the cylinder seat body (1), the top inner wall of the cylinder seat body (1) is provided with a flow guide port (53), the rear inner wall of the flow guide port (53) is slidably connected with a sliding plate (55), the right side outer wall of the sliding plate (55) is fixedly connected with a compression spring (56), the right side inner wall of the flow guide port (53) is provided with an oil guide hole (57), the right side inner wall of the piston port (3) is provided with a liquid outlet (58), the left side outer wall of the sliding plate (55) is provided with an inclined surface (59), and the adjusting structure (5) comprises an auxiliary structure (6).
2. A cylinder liner having a DLC wear resistant coating according to claim 1, characterized in that: The auxiliary structure (6) comprises a DLC wear-resistant coating (61), which is connected to the side outer wall of the piston rod (4).
3. A cylinder liner having a DLC wear resistant coating according to claim 1, characterized in that: The top inner wall of the oil tank (51) is clamped with a refueling cover (52), and the side outer wall of the refueling cover (52) is fixedly connected with a frosted pad.
4. A cylinder liner having a DLC wear resistant coating according to claim 1, characterized in that: The top outer wall of the flow guide port (53) is clamped with a top cover (54), and the end of the compression spring (56) away from the sliding plate (55) is fixedly connected to the right side inner wall of the flow guide port (53).
5. A cylinder liner having a DLC wear resistant coating according to claim 1, characterized in that: The sliding plate (55) is slidably connected to the rear inner wall of the liquid outlet (58), and the inclined surface (59) is slidably connected to the side outer wall of the piston rod (4).
6. A cylinder liner having a DLC wear resistant coating according to claim 1, characterized in that: The oil guide hole (57) is communicated with the flow guide port (53), and the liquid outlet (58) is communicated with the flow guide port (53).
7. A cylinder liner having a DLC wear resistant coating according to claim 2, characterized in that: The DLC wear-resistant coating (61) is respectively connected to the side outer wall of the cylinder seat body (1) and the piston rod (4).
8. A cylinder liner having a DLC wear resistant coating according to claim 1, characterized in that: The piston port (3) is provided in the top inner wall of the cylinder seat body (1), the bottom outer wall of the cylinder seat body (1) is fixedly connected with a fixed foot (2), and the piston rod (4) is slidably connected to the top inner wall of the piston port (3).