Oil rail pressure sealing structure and control valve

Abstract

The utility model discloses an oil rail pressure sealing structure and a control valve, and relates to the technical field of valve bodies, and the oil rail pressure sealing structure is characterized by comprising a static iron core, a movable iron core, a flange body, an outer cover, an ejector rod and a valve seat, the valve seat is used for being matched with the ejector rod to control the pressure of an oil rail. A sealing ring is arranged on the outer side of the lower end of the static iron core, the ejector rod is coaxially inserted into the static iron core, a top groove and a coil groove located in the lower side of the top groove are formed in the upper end of the static iron core, a coil is arranged in the coil groove, and the flange body and the movable iron core are located in the top groove. The top end of the ejector rod is fixedly connected with the movable iron core; the bottom of the flange body is provided with a linear moving cavity matched with the movable iron core. The top end of the ejector rod is sleeved with a spring, wherein the upper end of the spring abuts against the bottom side of the flange body, and the lower end of the spring abuts against the upper side of the movable iron core. And a sealing ring is arranged between the flange body and the groove wall of the top groove. According to the utility model, the purposes of stable matching and effective sealing pressure control are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bodies, and more specifically to an oil rail pressure sealing structure and a control valve. Background Art

[0002] The oil rail pressure control valve mainly plays the role of pressure regulation and constant pressure in the oil rail system. It uses the principle of control oil and spring balance during operation, and the working state is directly affected by the control pressure, thus forming a state that constantly changes according to the pressure.

[0003] However, although the existing oil rail pressure control valve adopts the electromagnetic coil mechanism to realize the control opening and closing strategy of the flow channel, the linkage effect, matching stability and sealing performance between the components are difficult to be effectively guaranteed, which affects the service life and pressure control accuracy of the oil rail pressure control valve and needs to be improved. Summary of the invention

[0004] In view of this, the first purpose of the present application is to provide a fuel rail pressure sealing structure to achieve the purpose of stable coordination and effective sealing and pressure control. The specific scheme is as follows:

[0005] A oil rail pressure sealing structure, comprising a static iron core, a moving iron core, a flange body, an outer cover, a push rod and a valve seat; the valve seat is used to cooperate with the push rod to control the oil rail pressure; a sealing ring is arranged on the outer side of the lower end of the static iron core, the push rod is coaxially inserted in the static iron core, the upper end of the static iron core is provided with a top groove and a coil groove located at the lower side of the top groove, a coil is arranged in the coil groove, the flange body and the moving iron core are located in the top groove, and the top end of the push rod is connected and fixed to the moving iron core; a linear moving cavity matching the moving iron core is arranged at the bottom of the flange body, and the top end of the push rod is sleeved with a spring whose upper end abuts against the bottom side of the flange body and whose lower end abuts against the upper side of the moving iron core; a sealing ring is arranged between the flange body and the groove wall of the top groove.

[0006] Preferably, the outer cover comprises a plastic coating which is detachably connected and fixed to the top end of the static iron core.

[0007] Preferably: an outer ring body is provided on the outer circumference of the moving iron core, and at least two limit plug-in holes with equal arc distribution are provided on the inner side of the outer ring body, and a limit column is inserted into the limit plug-in hole, and the top end of the limit column is connected and fixed to the plastic bag.

[0008] Preferably, a frame is provided in the coil slot, the coil is sleeved on the frame, and the bottom of the limiting column is inserted and fixed in the frame.

[0009] Preferably: the flange body is provided with a plurality of limit plug-in through holes respectively matching the corresponding limit plug-in holes, the bottom of the static iron core is provided with a bottom connection part, and a gasket and the valve seat are inserted in the bottom connection part.

[0010] Preferably: the sealing ring between the flange body and the groove wall of the top groove is a flange sealing ring, and a matching abutment groove matching the spring is provided on the lower side of the flange body; the sealing ring on the outer side of the lower end of the static iron core includes a lower sealing ring and an upper sealing ring.

[0011] The second object of the present application is to provide an oil rail pressure control valve, comprising the oil rail pressure sealing structure as described above, wherein a connecting cavity and a channel radially penetrating the stationary iron core and communicating with the connecting cavity are provided at the bottom of the static iron core; a conical groove is provided on the upper side of the valve seat, a steel ball is provided in the conical groove, the steel ball matches the push rod up and down, a valve mouth is provided at the bottom of the valve seat, and a filter mesh cover is sleeved on the bottom of the valve mouth.

[0012] Through the above scheme, it can be known that the present application provides an oil rail pressure sealing structure and control valve, which cooperates with the static iron core, the moving iron core, the flange body, the outer cover, the top rod and the valve seat, so that the coil in the linear slot drives the moving iron core to move linearly, and the elastic restoring force formed by the spring being squeezed drives the moving iron core to reset, so that the forces of the two are balanced to effectively control the operation of the moving iron core, and sealing rings are provided between the corresponding flange body and the groove wall of the top groove and on the outer side of the lower end of the static iron core, so as to ensure the overall sealing performance during the coordinated operation of each component. The oil rail pressure control valve has the purpose of achieving stable coordination and effective sealing and pressure control. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of this embodiment.

[0014] Explanation of the accompanying drawings: 1. static iron core; 11. top groove; 12. coil groove; 13. bottom connection; 14. connecting cavity; 141. channel; 15. lower sealing ring; 16. upper sealing ring; 2. moving iron core; 21. outer ring body; 22. limit plug-in hole; 3. flange body; 31. flange sealing ring; 32. matching abutment groove; 33. linear moving cavity; 34. limit plug-in through hole; 35. spring; 4. plastic coating; 5. push rod; 6. valve seat; 61. conical groove; 62. steel ball; 63. valve nozzle; 64. gasket; 7. filter screen; 8. coil; 9. skeleton; 91. limit column. DETAILED DESCRIPTION

[0015] In order to make the technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0016] like Figure 1 As shown, an oil rail pressure sealing structure includes a static iron core 1, a moving iron core 2, a flange body 3, an outer cover, a push rod 5 and a valve seat 6. The valve seat 6 is used to cooperate with the push rod 5 to control the oil rail pressure. The push rod 5 is coaxially inserted into the static iron core 1, and a top groove 11 and a coil 8 groove 12 located at the lower side of the top groove 11 are provided at the upper end of the static iron core 1. The coil 8 is provided in the coil 8 groove 12. The flange body 3 and the moving iron core 2 are located in the top groove 11, and the top end of the push rod 5 is connected and fixed to the moving iron core 2. A linear moving cavity 33 matching the moving iron core 2 is provided at the bottom of the flange body 3, and a spring 35 whose upper end abuts against the bottom side of the flange body 3 and whose lower end abuts against the upper side of the moving iron core 2 is sleeved on the top end of the push rod 5. In order to improve the sealing effect, a sealing ring is arranged on the outer side of the lower end of the static iron core 1 to play an effective sealing role during connection, and a sealing ring is arranged between the flange body 3 and the groove wall of the top groove 11, thereby effectively improving the matching stability and sealing ability between the components.

[0017] like Figure 1 As shown, the outer cover includes a plastic coating 4 that is detachably connected and fixed to the top of the static iron core 1. An outer ring body 21 is provided on one side of the outer circumference of the moving iron core 2, and at least two limit plug-in holes 22 with equal arc distribution are provided on the inner side of the outer ring body 21. Among them, a limit column 91 is inserted into the limit plug-in hole 22, and the top of the limit column 91 is connected and fixed to the plastic coating 4. At the same time, a skeleton 9 is provided in the groove 12 of the coil 8. The coil 8 is sleeved on the skeleton 9 to form a stable matching connection structure, and the bottom of the limit column 91 is inserted and fixed in the skeleton 9, so as to further improve the matching stability between the skeleton 9 and the static iron core 1.

[0018] It should be mentioned that the flange body 3 is provided with a plurality of limit plug-in through holes 34 respectively matching the corresponding limit plug-in holes 22. A bottom connection portion 13 is provided at the bottom of the static iron core 1, and a gasket 64 and a valve seat 6 are inserted in the bottom connection portion 13. The valve seat 6 is used to connect the external oil rail pipeline to facilitate the effective control of the oil rail pressure. In order to effectively improve the control effect and improve the matching stability and sealing performance between the components, the sealing ring between the flange body 3 and the groove wall of the top groove 11 is a flange sealing ring 31, and a matching abutment groove 32 matching the spring 35 is provided on the lower side of the flange body 3. At the same time, the sealing ring located on the outer side of the lower end of the static iron core 1 includes a lower sealing ring 15 and an upper sealing ring 16.

[0019] An oil rail pressure control valve includes the oil rail pressure sealing structure as described above. A connecting cavity 14 and a channel 141 that radially penetrates the static iron core 1 and is connected to the connecting cavity 14 are provided at the bottom of the static iron core 1. At the same time, a conical groove 61 is provided on the upper side of the valve seat 6. A steel ball 62 is provided in the conical groove 61, and the steel ball 62 matches the top rod 5 up and down and abuts against each other, so that the top rod 5 pushes the steel ball 62 to block the conical groove 61. A valve mouth 63 is provided at the bottom of the valve seat 6, and a filter screen cover 7 is sleeved on the bottom of the valve mouth 63 to achieve an effective filtering effect through the filter screen cover 7.

[0020] In summary, the present application provides an oil rail pressure sealing structure and a control valve. The oil rail pressure sealing structure drives the moving iron core 2 to move linearly through the coordination of the static iron core 1, the moving iron core 2, the flange body 3, the outer cover, the top rod 5 and the valve seat 6. The coil 8 in the linear slot drives the moving iron core 2 to move linearly, and the elastic restoring force formed by the squeezing of the spring 35 drives the moving iron core 2 to reset, so that the forces of the two are balanced to effectively control the operation of the moving iron core 2, and sealing rings are provided between the corresponding flange body 3 and the groove wall of the top groove 11 and on the outer side of the lower end of the static iron core 1, so as to ensure the overall sealing performance during the coordinated operation of each component. The oil rail pressure control valve has the purpose of achieving stable coordination and effective sealing and pressure control.

[0021] The "first", "second", "third", "fourth", etc. (if any) referred to in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods or devices.

[0022] It should be noted that the descriptions involving "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0023] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A fuel rail pressure sealing structure, characterized in that: The invention comprises a static iron core (1), a dynamic iron core (2), a flange body (3), an outer cover, a push rod (5) and a valve seat (6); the valve seat (6) is used to cooperate with the push rod (5) to control the oil rail pressure; a sealing ring is arranged on the outer side of the lower end of the static iron core (1); the push rod (5) is coaxially inserted into the static iron core (1); the upper end of the static iron core (1) is provided with a top groove (11) and a coil groove (12) located at the lower side of the top groove (11); a coil (8) is arranged in the coil groove (12); The flange body (3) and the moving iron core (2) are located in the top groove (11), and the top end of the push rod (5) is connected and fixed to the moving iron core (2); the bottom of the flange body (3) is provided with a linear moving cavity (33) matching the moving iron core (2), and the top end of the push rod (5) is sleeved with a spring (35) whose upper end abuts against the bottom side of the flange body (3) and whose lower end abuts against the upper side of the moving iron core (2); a sealing ring is provided between the flange body (3) and the groove wall of the top groove (11).

2. The fuel rail pressure sealing structure according to claim 1, characterized in that: The outer cover comprises a plastic rubber coating (4) which is detachably connected and fixed to the top end of the static iron core (1).

3. The fuel rail pressure sealing structure according to claim 2, characterized in that: An outer ring body (21) is provided on one side of the outer circumference of the moving iron core (2), and at least two limit plug holes (22) with equal arc distribution are provided on the inner side of the outer ring body (21), and a limit column (91) is inserted into the limit plug hole (22), and the top end of the limit column (91) is connected and fixed to the plastic coating (4).

4. The fuel rail pressure sealing structure according to claim 3, characterized in that: A frame (9) is arranged in the coil slot (12), the coil (8) is sleeved on the frame (9), and the bottom of the limiting column (91) is inserted and fixed in the frame (9).

5. The fuel rail pressure sealing structure according to claim 3, characterized in that: The flange body (3) is provided with a plurality of limit plug-in through holes (34) respectively matching the corresponding limit plug-in holes (22); the bottom of the static iron core (1) is provided with a bottom connection portion (13), and a gasket (64) and the valve seat (6) are inserted into the bottom connection portion (13).

6. The fuel rail pressure sealing structure according to claim 1, characterized in that: The sealing ring between the flange body (3) and the groove wall of the top groove (11) is a flange sealing ring (31), and a matching abutment groove (32) matching the spring (35) is provided on the lower side of the flange body (3); the sealing ring on the outer side of the lower end of the static iron core (1) includes a lower sealing ring (15) and an upper sealing ring (16).

7. A fuel rail pressure control valve, characterized in that: It comprises an oil rail pressure sealing structure as described in any one of claims 1 to 6, wherein a connecting cavity (14) and a channel (141) radially penetrating the static iron core (1) and communicating with the connecting cavity (14) are provided at the bottom of the static iron core (1); a conical groove (61) is provided on the upper side of the valve seat (6), a steel ball (62) is provided in the conical groove (61), the steel ball (62) matches the push rod (5) up and down, a valve mouth (63) is provided at the bottom of the valve seat (6), and a filter screen cover (7) is sleeved on the bottom of the valve mouth (63).

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