Communication valve for main oil duct of engine and engine comprising communication valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a communication valve for an engine main oil duct, which comprises a valve body, a filter channel and an oil pressure control channel are prefabricated in the valve body, and a damping piece is mounted in the filter channel; the oil pressure control channel comprises a first straight cylinder section, a second straight cylinder section, a conical section and a connecting section which are connected in sequence; a first spring and a valve core are mounted in the first straight cylinder section, a second spring is mounted in the second straight cylinder section, and a plug core is mounted at the conical section; the first spring, the valve element, the second spring and the plug core are sequentially connected. Pressure is primarily controlled through the damping piece, then the pressure is accurately controlled through the spring assembly in the oil pressure control channel, and the pressure control system can be more stable through the two pressure control devices. Through the two pressure control structure devices, the pressure can be more stable, and the service life of the communication valve is longer.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a connecting valve for a main oil passage of an engine and an engine comprising the connecting valve. Background Art

[0002] The engine main oil channel pressure limiting valve is a component that prevents the oil pressure in the engine main oil channel from exceeding a preset value, and has a very important impact on the stable operation of the engine. The existing valve structure is simple, that is, a valve core is simply installed between the oil inlet and the oil outlet, and a spring is sleeved on the valve core. When the pressure in the engine main oil channel reaches the preset opening pressure of the pressure limiting valve, the valve core slides toward the oil outlet, and the oil inlet and the oil outlet are connected to leak oil. When the oil inlet pressure is unstable, the stability of the oil supply system cannot be well controlled. Utility Model Content

[0003] The utility model aims to provide a connecting valve for a main oil passage of an engine and an engine comprising the same, which solves the problem that the existing valve cannot ensure the stability of the oil supply system.

[0004] The utility model is realized by the following technical solutions:

[0005] A connecting valve for a main oil channel of an engine comprises a valve body, a filter channel and an oil pressure control channel are prefabricated in the valve body, and a damping member is installed in the filter channel;

[0006] The oil pressure control channel comprises a first straight section, a second straight section, a tapered section and a connecting section which are connected in sequence;

[0007] A first spring and a valve core are installed in the first straight section, a second spring is installed in the second straight section, and a plugging core is installed at the conical section;

[0008] The first spring, the valve core, the second spring and the plugging core are connected in sequence.

[0009] Furthermore, an oil inlet channel and an oil outlet channel are prefabricated in the valve body;

[0010] The first straight cylinder section is communicated with the oil outlet channel, and the connecting section is communicated with the oil inlet channel.

[0011] Furthermore, the oil inlet channel and the oil outlet channel are vertically connected to the oil pressure control channel.

[0012] Furthermore, the filter channel is connected to the oil inlet channel through a pipeline.

[0013] Furthermore, the diameter of the first straight tube section is larger than that of the second straight tube section, and the necked end of the tapered section is connected to the connecting section.

[0014] Furthermore, the plugging core is a cone.

[0015] Furthermore, a blocking piece is installed at the port of the first straight cylinder section, and the first spring is in contact with and connected to the blocking piece.

[0016] Furthermore, the plugging core comprises a cylindrical body and a conical body connected together, a rubber pad is arranged outside the cylindrical body, and a gasket is arranged at the connection between the cylindrical body and the second spring.

[0017] The utility model also discloses an engine, comprising the connecting valve for the main oil channel of the engine.

[0018] Compared with the prior art, the utility model has the following beneficial technical effects:

[0019] The utility model discloses a connecting valve for the main oil passage of an engine, comprising an oil pressure control passage, the oil pressure control passage comprising a first straight section, a second straight section, a tapered section and a connecting section connected in sequence, a first spring and a valve core are installed in the first straight section, a second spring is installed in the second straight section, a plugging core is installed at the tapered section, and the first spring, the valve core, the second spring and the plugging core are connected in sequence. When the plugging core is subjected to a certain pressure of oil, the second spring is compressed, the plugging core moves, a gap is formed between the plugging core and the inner wall of the tapered section, and the oil flows into the second straight section through the gap, and then continues to compress the first spring, the valve core moves, and the oil flows into the first straight section through the gap, and then flows out from the oil outlet; when the combined force of the oil pressure at the oil outlet and the spring elastic force is greater than the oil pressure at the oil inlet, the gap between the valve core and the valve body is closed to prevent the oil in the oil outlet area from reversely entering the oil inlet area and causing damage to the oil inlet area. The connecting valve uses two sets of pressure control structures to ensure that the pressure of the entire system can operate stably. The damping element is used to initially control the pressure, and the spring assembly in the oil pressure control channel is used to accurately control the pressure. The two sets of pressure control structures can make the pressure more stable and extend the life of the connecting valve.

[0020] Furthermore, the plug is a cone-shaped body, and the cone-shaped design allows automatic alignment, thereby providing a better sealing effect.

[0021] The utility model also discloses an engine comprising the main oil channel connecting valve, which also has the advantages of the connecting valve and can increase the service life of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a structural schematic diagram of a connecting valve for a main oil channel of an engine.

[0023] Among them, 1. plugging part; 2. first rubber pad; 3. valve core; 4. second rubber pad; 5. second spring; 6. first spring; 7. plugging core; 8. gasket; 9. damping bolt; 10. valve body; 11. oil inlet; 12. oil outlet; 13. oil inlet channel; 14. oil outlet channel; 15. oil pressure control channel. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the following is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model, that is, the embodiments described are only part of the embodiments of the utility model, not all of the embodiments.

[0025] The components described and shown in the drawings and embodiments of the present invention can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the claimed invention, but merely represents a selected embodiment of the present invention. Based on the drawings and embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0026] It should be noted that the terms "comprises", "includes" or any other variants are intended to cover non-exclusive inclusion, so that a process, element, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to the process, element, method, article or device. In addition, the term "vertical" is based on the orientation and positional relationship of the device or component shown in the drawings, and is only for the purpose of better describing the utility model, rather than requiring the device, component or device shown to have this specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0027] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0028] like Figure 1 As shown, the utility model discloses a connecting valve for a main oil channel of an engine, comprising a valve body 10, in which an oil inlet channel 13, an oil outlet channel 14, an oil pressure control channel 15 and a filter channel are prefabricated.

[0029] The oil pressure control channel 15 includes a first straight cylinder section, a second straight cylinder section, a tapered section and a connecting section which are connected in sequence. The diameter of the first straight cylinder section is larger than that of the second straight cylinder section, and the conical section is connected to the connecting section. The first straight cylinder section is connected to the oil outlet channel 14, and the connecting section is connected to the oil inlet channel 13. A plugging core 7 is installed at the tapered section, a first spring 6 and a valve core 3 are installed in the first straight cylinder section, and a second spring 5 is installed in the second straight cylinder section. The first spring 6, the valve core 3, the second spring 5 and the plugging core 7 are connected in sequence.

[0030] A blocking member 1 is installed at the end of the first straight tube section, and a first spring 6 is in contact with and connected to the blocking member 1. A first rubber pad 2 is provided at the location where the blocking member 1 is installed.

[0031] A damping bolt 9 is installed in the filter channel. The oil enters the valve body 10 through the oil inlet 11, passes through the filter channel, is filtered by the damping bolt 9, and then enters the oil inlet channel 13 through the pipeline.

[0032] Preferably, the plugging core 7 is a cone-shaped body, which is matched with the cone section; the cone-shaped design can be automatically aligned to better play a sealing role.

[0033] More preferably, the plugging core 7 comprises a cylindrical body and a conical body connected together, a second rubber pad 4 is provided outside the cylindrical body, and a gasket 8 is provided at the connection between the cylindrical body and the second spring 5 .

[0034] The various interface parts of the valve body 10 are designed with threads to connect the various oil circuits together.

[0035] The pressure for opening the valve core 3 is controlled by a spring. When the plugging core 7 is subjected to a certain pressure, the second spring 5 is compressed, the plugging core 7 moves to the left, and a gap is formed between the plugging core 7 and the inner wall of the tapered section. The oil flows into the second straight cylinder section through the gap, and then the first spring 6 continues to be compressed, the valve core 3 moves to the left, and the oil flows into the first straight cylinder section through the gap, and then passes through the oil outlet channel 14 and flows out from the oil outlet 12; when the oil pressure at the oil outlet 12 and the combined force of the two spring elastic forces are greater than the oil pressure at the oil inlet 11, the gap between the valve core 3 and the valve body 10 is closed to prevent the oil in the oil outlet area from reversely entering the oil inlet area and causing damage to the oil inlet area.

[0036] Depend on Figure 1 It can be seen that the connecting valve adopts the valve core 3 and the plug core 7 for double sealing, and the opening and closing forces are controlled by two springs.

[0037] Specifically, the oil inlet passage 13 and the oil outlet passage 14 are vertically connected to the oil pressure control passage 15 .

[0038] The connecting valve ensures that the pressure of the entire system can operate stably through two sets of pressure control structure functions. Specifically, the pressure is initially controlled by the damping member, and the pressure is accurately controlled by the spring assembly in the oil pressure control channel 15. The two sets of pressure control structures can make the pressure more stable and the service life of the connecting valve longer.

[0039] The utility model also provides an engine, which comprises the engine main oil channel connecting valve. The engine with the valve should also have beneficial effects.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A connecting valve for an engine main oil passage, characterized in that: It comprises a valve body (10), in which a filter channel and an oil pressure control channel (15) are prefabricated, and a damping element is installed in the filter channel; The oil pressure control channel (15) comprises a first straight section, a second straight section, a tapered section and a connecting section which are connected in sequence; A first spring (6) and a valve core (3) are installed in the first straight section, a second spring (5) is installed in the second straight section, and a plug core (7) is installed at the tapered section; The first spring (6), the valve core (3), the second spring (5) and the plug core (7) are connected in sequence.

2. A connecting valve for an engine main oil passage according to claim 1, characterized in that: An oil inlet passage (13) and an oil outlet passage (14) are also prefabricated in the valve body (10); The first straight cylindrical section is in communication with the oil outlet passage (14), and the connecting section is in communication with the oil inlet passage (13).

3. A connecting valve for an engine main oil passage according to claim 2, characterized in that: The oil inlet channel (13) and the oil outlet channel (14) are vertically connected to the oil pressure control channel (15).

4. A connecting valve for a main oil passage of an engine according to claim 2, characterized in that: The filter channel is connected to the oil inlet channel (13) through a pipeline.

5. The connecting valve for the main oil passage of an engine according to claim 1, characterized in that: The diameter of the first straight tube section is larger than that of the second straight tube section, and the necking end of the tapered section is connected to the connecting section.

6. A connecting valve for a main oil passage of an engine according to claim 1, characterized in that: The plugging core (7) is a cone-shaped body.

7. The connecting valve for the main oil passage of an engine according to claim 1, characterized in that: A blocking piece (1) is installed at the end of the first straight tube section, and a first spring (6) is in contact with and connected to the blocking piece (1).

8. The connecting valve for the main oil passage of an engine according to claim 1, characterized in that: The plugging core (7) comprises a cylindrical body and a conical body connected together, a rubber pad is arranged outside the cylindrical body, and a gasket (8) is arranged at the connection between the cylindrical body and the second spring (5).

9. An engine, characterized in that: The invention comprises a connecting valve for a main oil passage of an engine as claimed in any one of claims 1 to 8.

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