Detachable wear-resistant diesel engine valve with heterogeneous surfaces

Abstract

The utility model relates to a detachable heterogeneous surface wear-resistant diesel engine valve which comprises a valve rod and a valve head, the valve head is fixedly connected with the valve rod through a locking structure, one end of the valve head is concentrically and fixedly provided with an annular column, one end of the valve rod is concentrically provided with an annular groove, and the annular column is located in the annular groove. A locking structure is arranged between the valve rod and the valve head, a guiding and positioning assembly is arranged between the valve rod and the valve head, the guiding and positioning assembly can enable the locking structure to correspond to each other in the installation and fixation process of the valve head and the valve rod, and a sealing assembly is further arranged between the valve rod and the valve head. In addition, when the valve head is damaged, the valve head and the valve rod can be rapidly separated through the locking structure, the tedious operation that the whole valve head needs to be disassembled is avoided, and the disassembling and replacing efficiency is improved; and the arranged guiding and positioning assembly, the annular column and the annular groove can enable the locking structure to automatically complete positioning.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a detachable, heterogeneous-surface wear-resistant diesel engine valve. Background Art

[0002] Diesel engine valves are crucial components in the engine, controlling the inlet and outlet valves to regulate airflow within the cylinders. The valves' primary function is to introduce air into the engine and expel combustion exhaust gases. In terms of engine structure, valves are categorized as intake and exhaust valves. The intake valve draws air into the engine for combustion with fuel, while the exhaust valve expels combustion exhaust gases and dissipates heat.

[0003] The working principle of the valve mainly relies on the elastic force of the valve spring and the movement of the valve stem to control the opening and closing of the valve. In order to ensure the normal operation of the engine, the valve requires regular maintenance, including cleaning, lubrication, inspection and adjustment of valve clearance, etc.

[0004] The normal operation of the valve is very important to ensure the normal operation of the engine. The valve consists of a valve, a lower valve spring seat, an upper valve spring seat, an inner valve spring, an outer valve spring, a valve oil seal, a valve lock block and other parts. Because the existing valve is formed by the valve head and the valve stem in one piece, when the valve head is damaged, the valve needs to be disassembled as a whole, which will cause the above-mentioned lower valve spring seat, upper valve spring seat, inner valve spring, outer valve spring, valve oil seal, valve lock block and the like to be broken up, making the replacement and installation operation cumbersome and reducing the efficiency of disassembly and replacement. Utility Model Content

[0005] The purpose of the utility model is to provide a detachable, heterogeneous-surface wear-resistant diesel engine valve to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A detachable, heterogeneous, wear-resistant diesel engine valve comprises a valve stem and a valve head, wherein the valve head is fixedly connected to the valve stem via a locking structure, an annular column is fixedly provided concentrically on one end of the valve head, an annular groove is concentrically formed on one end of the valve stem, and the annular column is located inside the annular groove;

[0008] A guide and positioning assembly is provided between the valve stem and the valve head, and the guide and positioning assembly can make the locking structure correspond to each other during the process of installing and fixing the valve head and the valve stem;

[0009] A sealing assembly is further provided between the valve stem and the valve head, and the sealing assembly can ensure the sealing performance when the valve stem and the valve head are fixedly connected.

[0010] As a further solution of the utility model:

[0011] The guide and positioning assembly includes a No. 1 hollow cylinder with one end fixedly connected to the valve head and a No. 2 hollow cylinder with one end fixedly connected to the valve stem;

[0012] The valve head and the first hollow cylinder are concentric and integrally formed, and the valve stem and the second hollow cylinder are concentric and integrally formed.

[0013] As a further solution of the utility model:

[0014] The other end of the No. 1 hollow tube is provided with a No. 1 inclined surface, and the other end of the No. 2 hollow tube is provided with a No. 2 inclined surface, and the No. 1 inclined surface and the No. 2 inclined surface are in contact with each other.

[0015] As a further solution of the utility model:

[0016] A guide groove is provided on the first inclined surface along the length direction of the first hollow cylinder, and a guide column is fixedly provided on the second inclined surface along the length direction of the second hollow cylinder;

[0017] The guide posts are located inside the guide slots and cooperate with each other.

[0018] As a further solution of the utility model:

[0019] The locking structure includes an elastic clamping column fixedly arranged on one end of the valve head close to the valve stem and an annular cavity opened on one end of the valve stem close to the valve head, and the elastic clamping column is located inside the annular cavity.

[0020] As a further solution of the utility model:

[0021] A stop block is fixedly provided inside the annular cavity and is locked with the elastic clamping column;

[0022] A disassembly through-hole is formed on the side wall of the valve stem, the disassembly through-hole is communicated with the annular cavity, and the disassembly through-hole corresponds to the end position of the elastic clamping column;

[0023] A latching protrusion is formed at one end of the elastic clamping column that cooperates with the stop block, and a slope is provided on one side of the latching protrusion, and the slope on the latching protrusion is away from the other end of the elastic clamping column; a slope is also provided on the stop block, and the slope on the stop block faces the valve head; the other side of the latching protrusion is a plane, and the side of the stop block opposite to the slope is also a plane.

[0024] As a further solution of the utility model:

[0025] The sealing assembly includes a sealing ring and a groove formed on one end of the valve stem close to the valve head. The sealing ring is located inside the groove, and one side of the sealing ring is in contact with one end of the valve head.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] Both the valve stem and the valve head are made of alloy steel and are wear-resistant. The locking structure is set up to fix the valve head to the valve stem, and when the valve head is damaged, the locking structure can be used to quickly separate the valve head from the valve stem, avoiding the tedious operation of disassembling the entire valve head and improving the efficiency of disassembly and replacement. During the installation of the valve stem and valve head, the guide positioning assembly, annular column and annular groove are set up to automatically complete the positioning of the locking structure, and the sealing assembly can ensure the sealing of the valve stem and valve head when they are fixedly connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the overall structure.

[0029] Figure 2 It is a cross-sectional view of the valve stem and valve head.

[0030] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0031] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0032] Figure 5 This is a disassembled diagram of hollow tube No. 1 and hollow tube No. 2.

[0033] Figure 6 This is a schematic diagram of the overall structure from another perspective.

[0034] Figure 7 This is a cross-sectional view of the valve stem and valve head from another perspective.

[0035] Figure 8 for Figure 7 Enlarged view of point C in the middle.

[0036] Figure 9 This is a disassembled diagram of the valve stem and sealing ring.

[0037] Figure 10 for Figure 9 Enlarged view of point D in the middle.

[0038] In the figure: 1. Valve stem; 2. Valve head; 3. Annular column; 4. Annular groove; 5. Hollow cylinder No. 1; 501. Inclined surface No. 1; 502. Guide groove; 6. Hollow cylinder No. 2; 601. Inclined surface No. 2; 602. Guide column; 7. Elastic clamping column; 8. Annular cavity; 9. Stop block; 10. Disassembly through hole; 11. Groove; 12. Sealing ring. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiment.

[0041] See also Figures 1 to 10 In an embodiment of the utility model, a detachable, heterogeneous, wear-resistant diesel engine valve comprises a valve stem 1 and a valve head 2. The valve head 2 is fixedly connected to the valve stem 1 via a locking structure. An annular column 3 is fixedly provided concentrically on one end of the valve head 2. An annular groove 4 is concentrically formed on one end of the valve stem 1. The annular column 3 is located inside the annular groove 4.

[0042] A guide and positioning assembly is provided between the valve stem 1 and the valve head 2, and the guide and positioning assembly can make the locking structure correspond to each other during the process of installing and fixing the valve head 2 and the valve stem 1;

[0043] A sealing assembly is further provided between the valve stem 1 and the valve head 2 , and the sealing assembly can ensure the sealing performance when the valve stem 1 and the valve head 2 are fixedly connected.

[0044] In this solution, the valve stem 1 and the valve head 2 are both made of alloy steel and have wear-resistant properties; the locking structure is set up to fix the valve head 2 to the valve stem 1, and when the valve head 2 is damaged, the locking structure can be used to quickly separate the valve head 2 from the valve stem 1, avoiding the tedious operation of disassembling the entire valve head 2 and improving the efficiency of disassembly and replacement; during the installation of the valve stem 1 and the valve head 2, the set guide positioning assembly, annular column 3 and annular groove 4 can enable the locking structure to automatically complete the positioning, and the sealing assembly can ensure the sealing of the valve stem 1 and the valve head 2 when they are fixedly connected.

[0045] As a further solution of the present invention, the guide and positioning assembly includes a No. 1 hollow cylinder 5 having one end fixedly connected to the valve head 2 and a No. 2 hollow cylinder 6 having one end fixedly connected to the valve stem 1;

[0046] The valve head 2 and the first hollow cylinder 5 are concentric and integrally formed, and the valve stem 1 and the second hollow cylinder 6 are concentric and integrally formed;

[0047] The other end of the No. 1 hollow cylinder 5 is provided with a No. 1 inclined surface 501, and the other end of the No. 2 hollow cylinder 6 is provided with a No. 2 inclined surface 601, and the No. 1 inclined surface 501 and the No. 2 inclined surface 601 are in contact with each other;

[0048] A guide groove 502 is provided on the first inclined surface 501 along the length direction of the first hollow cylinder 5, and a guide post 602 is fixedly provided on the second inclined surface 601 along the length direction of the second hollow cylinder 6;

[0049] The guide posts 602 are located inside the guide slots 502 and cooperate with each other.

[0050] In this embodiment, during installation, the annular column 3 is inserted into the annular groove 4 through the valve head 2. Since the valve head 2 and the first hollow cylinder 5 are concentric and integrally formed, and the valve stem 1 and the second hollow cylinder 6 are concentric and integrally formed, the first hollow cylinder 5 will also be close to the second hollow cylinder 6.

[0051] When the No. 1 hollow cylinder 5 and the No. 2 hollow cylinder 6 approach each other, the guide column 602 will contact the No. 1 inclined surface 501, and the No. 1 inclined surface 501 will guide and drive the guide column 602 to slide toward the guide groove 502. Due to the interaction between the annular column 3 and the annular groove 4, the valve head 2 and the valve stem 1 cannot be misaligned and can only rotate relative to each other, so the No. 1 hollow cylinder 5 and the No. 2 hollow cylinder 6 move closer and rotate.

[0052] When the guide post 602 slides to the guide groove 502, the valve head 2 is further pushed so that the guide post 602 is completely inserted into the guide groove 502, and the No. 1 bevel 501 and the No. 2 bevel 601 fit together. During this process, the No. 1 hollow cylinder 5 and the No. 2 hollow cylinder 6 cannot rotate and can only slide closer.

[0053] As a further solution of the present invention, the locking structure includes an elastic clamping column 7 fixedly arranged on the end of the valve head 2 close to the valve stem 1 and an annular cavity 8 opened on the end of the valve stem 1 close to the valve head 2, and the elastic clamping column 7 is located inside the annular cavity 8;

[0054] A stop block 9 is fixedly provided inside the annular cavity 8 and is locked with the elastic clamping column 7;

[0055] A disassembly through-hole 10 is formed on the side wall of the valve stem 1 , the disassembly through-hole 10 is communicated with the annular cavity 8 , and the disassembly through-hole 10 corresponds to the end position of the elastic clamping column 7 ;

[0056] A locking protrusion is formed at one end of the elastic clamping column 7 that cooperates with the stop block 9, and a slope is provided on one side of the locking protrusion, and the slope on the locking protrusion is away from the other end of the elastic clamping column 7; a slope is also provided on the stop block 9, and the slope on the stop block 9 faces the valve head 2; the other side of the locking protrusion is a plane, and the side of the stop block 9 opposite to the slope is also a plane.

[0057] In this embodiment, during installation, when the guide post 602 slides to the guide groove 502, the positions of the elastic clamping post 7 and the stop block 9 correspond to each other. Then, the valve head 2 is pushed further, so that the guide post 602 is fully inserted into the guide groove 502. At this time, the elastic clamping post 7 approaches the stop block 9 and engages with it.

[0058] In the process of the elastic clamping column 7 and the stop block 9 contacting, since the elastic clamping column 7 is elastic, and one end of the elastic clamping column 7 and the stop block 9 cooperate with each other to form a clamping convex, the clamping convex is respectively provided with a straight surface and an inclined surface, and the stop block 9 is also provided with a straight surface and an inclined surface. Figure 4 As shown, the inclined surface of the stop block 9 pushes the inclined surface of the clamping protrusion, so that the clamping protrusion drives the elastic clamping column 7 to bend;

[0059] When the guide post 602 is fully inserted into the guide groove 502, the inclined surface of the stop block 9 will separate from the inclined surface of the locking protrusion, and the straight surface of the stop block 9 will fit into the straight surface of the locking protrusion, that is, the elastic clamping column 7 will return to its original state. At this time, the elastic clamping column 7 and the stop block 9 will form a snap-fit effect, that is, the valve head 2 and the valve stem 1 are fixed to each other;

[0060] During disassembly, since the disassembly through hole 10 corresponds to the end position of the elastic clamping column 7, a tool can be used to penetrate the disassembly through hole 10 and push the clamping protrusion at the end of the elastic clamping column 7, so that the clamping protrusion is separated from the stop block 9, and the elastic clamping column 7 can be moved outward, so that the valve head 2 and the valve stem 1 are separated from each other.

[0061] As a further solution of the present invention, the sealing assembly includes a sealing ring 12 and a groove 11 opened at one end of the valve stem 1 close to the valve head 2. The sealing ring 12 is located inside the groove 11, and one side of the sealing ring 12 is in contact with one end of the valve head 2.

[0062] In this embodiment, since the sealing ring 12 is located inside the groove 11 and one side of the sealing ring 12 fits against one end of the valve head 2, the gap between the valve stem 1 and the valve head 2 is filled, thereby ensuring the sealing when the valve stem 1 and the valve head 2 are fixedly connected; the main function of the groove 11 is to accommodate the sealing ring 12.

[0063] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0064] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A detachable, heterogeneous, wear-resistant diesel engine valve, comprising a valve stem (1) and a valve head (2), characterized in that: The valve head (2) is fixedly connected to the valve stem (1) via a locking structure, an annular column (3) is fixedly provided concentrically on one end of the valve head (2), an annular groove (4) is concentrically formed on one end of the valve stem (1), and the annular column (3) is located inside the annular groove (4); A guide positioning assembly is provided between the valve stem (1) and the valve head (2), and the guide positioning assembly can make the locking structure correspond to each other during the process of installing and fixing the valve head (2) and the valve stem (1); A sealing assembly is also provided between the valve stem (1) and the valve head (2), and the sealing assembly can ensure the sealing performance when the valve stem (1) and the valve head (2) are fixedly connected.

2. A detachable, heterogeneous surface wear-resistant diesel engine valve according to claim 1, characterized in that: The guide positioning assembly comprises a No. 1 hollow cylinder (5) having one end fixedly connected to the valve head (2) and a No. 2 hollow cylinder (6) having one end fixedly connected to the valve stem (1); The valve head (2) and the first hollow cylinder (5) are concentric and integrally formed, and the valve stem (1) and the second hollow cylinder (6) are concentric and integrally formed.

3. A detachable, heterogeneous surface wear-resistant diesel engine valve according to claim 2, characterized in that: The other end of the No. 1 hollow cylinder (5) is provided with a No. 1 inclined surface (501), and the other end of the No. 2 hollow cylinder (6) is provided with a No. 2 inclined surface (601), and the No. 1 inclined surface (501) and the No. 2 inclined surface (601) are fitted to each other.

4. A detachable, heterogeneous surface wear-resistant diesel engine valve according to claim 3, characterized in that: A guide groove (502) is provided on the first inclined surface (501) along the length direction of the first hollow cylinder (5), and a guide column (602) is fixedly provided on the second inclined surface (601) along the length direction of the second hollow cylinder (6); The guide posts (602) are located inside the guide grooves (502) and cooperate with each other.

5. The detachable, heterogeneous surface wear-resistant diesel engine valve according to claim 1, characterized in that: The locking structure comprises an elastic clamping column (7) fixedly arranged at one end of the valve head (2) close to the valve stem (1) and an annular cavity (8) opened at one end of the valve stem (1) close to the valve head (2), wherein the elastic clamping column (7) is located inside the annular cavity (8).

6. A detachable, heterogeneous surface wear-resistant diesel engine valve according to claim 5, characterized in that: A stop block (9) is fixedly provided inside the annular cavity (8) and is engaged with the elastic clamping column (7); A disassembly through hole (10) is provided on the side wall of the valve stem (1), the disassembly through hole (10) is communicated with the annular cavity (8), and the disassembly through hole (10) corresponds to the end position of the elastic clamping column (7); A latching protrusion is formed on one end of the elastic latch column (7) that cooperates with the stop block (9), and a slope is provided on one side of the latching protrusion, and the slope on the latching protrusion is away from the other end of the elastic latch column (7); a slope is also provided on the stop block (9), and the slope on the stop block (9) faces the valve head (2); the other side of the latching protrusion is a plane, and the side of the stop block (9) opposite to the slope is also a plane.

7. The detachable, heterogeneous surface wear-resistant diesel engine valve according to claim 1, characterized in that: The sealing assembly comprises a sealing ring (12) and a groove (11) provided at one end of the valve stem (1) close to the valve head (2); the sealing ring (12) is located inside the groove (11), and one side of the sealing ring (12) is in contact with one end of the valve head (2).

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