Electromagnetic valve structure of high-pressure oil pump
By opening a fluid groove on the moving iron core shaft of the high-pressure oil pump, connecting with the armature and the iron core seat is solved, and the electromagnetic force weakening and strength reduction caused by holes on the iron core seat or armature in the prior art is solved. The smoothness of the fluid path and the maintenance of the equipment strength is achieved.
Patent Information
- Application Number
- CN202421036100.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-14
AI Technical Summary
When the space of the existing solenoid valve of high-pressure oil pumps is limited, holes are drilled on the core seat or armature to reduce the core volume, resulting in weakening of the electromagnetic force, and the strength decreases after the contact surface is grooved, affecting the overall strength of the equipment.
A fluid groove is opened on the moving iron core shaft, and a connection is formed between the armature and the iron core seat through the reciprocating movement of the moving iron core shaft, forming a fluid path, avoiding grooves and holes on other parts, and maintaining the strength of the equipment.
It is achieved to ensure the smoothness of the fluid path without damaging the strength of the equipment, enhance the electromagnetic force, and improve the performance of the solenoid valve.
Smart Images
Figure CN222208129U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a solenoid valve structure of a high-pressure oil pump. Background Art
[0002] The high-pressure fuel pump includes a plunger slidably fitted in a cylinder. The front end of the plunger reciprocates in a pressurizing chamber, thereby compressing and pressurizing the fuel introduced into the pressurizing chamber from the intake valve mechanism and discharging it from the discharge valve mechanism.
[0003] The solenoid valve of a high-pressure oil pump with a normally closed valve structure usually uses an armature or core seat to set a fluid passage in the form of an opening inside and on the working abutting end surface. To realize this passage, it is necessary to drill a hole in the armature or core seat and groove the abutting surface.
[0004] When the space of the solenoid valve is very small, drilling holes on the core seat or the armature reduces the volume of the core and weakens the electromagnetic force. The surface area of the abutment surface is reduced after the groove is opened, resulting in a decrease in the strength of the collision surface. Utility Model Content
[0005] The purpose of the utility model is to address the above-mentioned problems in the existing technology and propose a solenoid valve structure for a high-pressure oil pump, in which a fluid groove is opened on the moving iron core shaft to connect the flow between the iron core seat and the armature when the embolism moves, thereby avoiding damage to the strength of the body after grooves and holes are opened on other parts.
[0006] The purpose of the utility model can be achieved through the following technical solutions: A solenoid valve structure of a high-pressure oil pump, characterized in that it includes:
[0007] A moving iron core shaft, the tail of which has a plug;
[0008] The movable iron core shaft plug is sleeved with an oil hole seat, an iron core seat is installed on the oil hole seat, an armature is sleeved on the movable iron core shaft at the front end of the iron core seat, an iron core seat upper sleeve is sleeved on the armature, and the inner top of the iron core seat upper sleeve is provided with a guide sleeve sleeved on the end of the movable iron core shaft;
[0009] A fluid groove is provided on the side surface of the upper half of the moving iron core shaft.
[0010] Furthermore, when the movable iron core shaft reciprocates, the fluid groove is connected with the armature and the iron core seat to form a fluid passage.
[0011] Furthermore, the oil hole seat has a supporting end surface at one end away from the plug, and the solenoid valve spring is supported on the supporting end surface.
[0012] Furthermore, a spring seat is provided inside the iron core seat and the spring seat is sleeved on the moving iron core shaft, and the other end of the solenoid valve spring abuts against the spring seat.
[0013] Furthermore, the diameter of the upper half of the moving iron core shaft is slightly smaller than the diameter of the lower half.
[0014] Furthermore, a magnetic isolation ring is provided between the front end of the core seat and the end of the core seat upper sleeve.
[0015] Furthermore, the oil hole seat, the iron core seat, the armature, and the guide sleeve are all sleeved on the movable iron core shaft, and the oil hole seat, the iron core seat, and the armature are all in contact with each other.
[0016] Furthermore, the oil hole seat is provided with a plurality of oil holes.
[0017] Compared with the prior art, the advantages of the present application are as follows: a fluid groove is provided on the movable iron core shaft to connect the flow between the iron core seat and the armature when the plug moves, thereby avoiding damage to the strength of the main body after grooving or drilling on other parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the utility model;
[0019] Figure 2 It is a cross-sectional view of the utility model;
[0020] Figure 3 It is a schematic diagram of the fluid groove of the moving iron core shaft;
[0021] In the figure, 1, core seat upper sleeve; 2, moving iron core shaft; 21, plug; 22, fluid groove; 3, oil hole seat; 31, oil hole; 32, abutting end face; 4, core seat; 41, solenoid valve spring; 42, spring seat; 5, magnetic isolation ring; 6, armature; 7, guide sleeve. DETAILED DESCRIPTION
[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention.
[0023] like Figure 1-3 As shown, a solenoid valve structure of a high-pressure oil pump is characterized in that it includes:
[0024] The moving iron core shaft 2 has a plug 21 at its tail;
[0025] The plug 21 of the movable iron core shaft 2 is sleeved with an oil hole seat 3, and an iron core seat 4 is installed on the oil hole seat 3. An armature 6 is sleeved on the movable iron core shaft 2 at the front end of the iron core seat 4, and an iron core seat upper sleeve 1 is sleeved on the armature 6. The inner top of the iron core seat upper sleeve 1 has a guide sleeve 7 sleeved on the end of the movable iron core shaft 2;
[0026] A fluid groove 22 is formed on the side surface of the upper half of the movable iron core shaft 2 .
[0027] Furthermore, when the movable iron core shaft 2 reciprocates, the fluid groove 22 is connected with the armature 6 and the iron core seat 4 to form a fluid passage.
[0028] The motion trajectory of the moving iron core shaft 2 is reciprocating motion. When it moves, the fluid groove 22 in the upper section will move in the closed space inside the core seat 4 and the closed space inside the armature 6. The two are connected through the fluid groove 22 to form a fluid channel. The connecting surfaces of the armature 6 and the core seat 4 are abutted against each other and are sleeved on the moving iron core shaft 2 to form a closed space.
[0029] Furthermore, the oil hole seat 3 has an abutting end surface 32 at one end away from the plug 21 , and the solenoid valve spring 41 abuts against the abutting end surface 32 .
[0030] Furthermore, the core seat 4 has a spring seat 42 inside and the spring seat 42 is sleeved on the movable iron core shaft 2, and the other end of the electromagnetic valve spring 41 abuts against the spring seat 42. The elastic force of the electromagnetic valve spring 41 controls the opening and closing time of the electromagnetic valve.
[0031] Furthermore, the diameter of the upper half of the moving iron core shaft 2 is slightly smaller than the diameter of the lower half.
[0032] Furthermore, a magnetic isolation ring 5 is sleeved between the front end of the core seat 4 and the end of the core seat upper sleeve 1. The magnetic isolation ring 5 has a magnetic shielding effect.
[0033] Furthermore, the oil hole seat 3, the core seat 4, the armature 6, and the guide sleeve 7 are all sleeved on the movable iron core shaft 2, and the oil hole seat 3, the core seat 4, and the armature 6 are all abutted against each other. A closed space can be formed by abutting against each other.
[0034] The present application provides a flow groove on the moving iron core shaft 2, which is different from the conventional method of making slots on the armature 6 or the core seat 4. The present application avoids the reduction of electromagnetic force caused by drilling holes on the core seat 4 or the armature 6 and the reduction of strength after the abutment surface is slotted.
[0035] Furthermore, the oil hole seat 3 is provided with a plurality of oil holes 31. The oil holes 31 are for oil to enter.
[0036] The technical solution of the above utility model provides a solution that is significantly different from the prior art to address the technical problem that the prior art solution is too single. The parts not involved in the technical solution of this application are the same as the prior art or can be implemented by using the prior art and will not be described in detail.
[0037] The technical solutions in the above embodiments have clearly and completely described the contents of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
Claims
1. A solenoid valve structure for a high-pressure oil pump, characterized in that it include: A moving iron core shaft, the tail of which has a plug; The movable iron core shaft plug is sleeved with an oil hole seat, an iron core seat is installed on the oil hole seat, an armature is sleeved on the movable iron core shaft at the front end of the iron core seat, an iron core seat upper sleeve is sleeved on the armature, and the inner top of the iron core seat upper sleeve is provided with a guide sleeve sleeved on the end of the movable iron core shaft; A fluid groove is provided on the side of the upper half of the moving iron core shaft.
2. The solenoid valve structure of a high-pressure oil pump according to claim 1, characterized in that: The fluid groove is connected with the armature and the core seat when the movable iron core shaft reciprocates, thereby forming a fluid passage.
3. The solenoid valve structure of a high-pressure oil pump according to claim 1, characterized in that: The oil hole seat has a contact end surface at one end away from the plug, and the electromagnetic valve spring contacts the contact end surface.
4. The solenoid valve structure of a high-pressure oil pump according to claim 3, characterized in that: The core seat has a spring seat inside and the spring seat is sleeved on the moving iron core shaft, and the other end of the solenoid valve spring abuts against the spring seat.
5. The solenoid valve structure of a high-pressure oil pump according to claim 1, characterized in that: The diameter of the upper half of the moving iron core shaft is slightly smaller than the diameter of the lower half.
6. The solenoid valve structure of a high-pressure oil pump according to claim 1, characterized in that: A magnetic isolation ring is sleeved between the front end of the core seat and the end of the upper sleeve of the core seat.
7. The solenoid valve structure of a high-pressure oil pump according to claim 1, characterized in that: The oil hole seat, the iron core seat, the armature and the guide sleeve are all sleeved on the movable iron core shaft, and the oil hole seat, the iron core seat and the armature are all in contact with each other.
8. The solenoid valve structure of a high-pressure oil pump according to claim 1, characterized in that: The oil hole seat is provided with a plurality of oil holes.