Electromagnetic valve control oil injector of diesel engine
By installing a sealing mechanism on the outer surface of the wiring head of the diesel engine solenoid valve control, the short circuit and oil vapor explosion caused by exposed connections between the wires and the wiring heads are solved, and the stable and safe use of the wiring heads is achieved.
Patent Information
- Application Number
- CN202421749047.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-23
AI Technical Summary
In the solenoid valve injector, the connection between the wire and the wiring head is exposed, causing the fuel conductivity to destroy the insulation state, which may cause short circuits and oil vapor explosions, endangering personnel and equipment.
A diesel engine solenoid valve control fuel injector is designed, and a sealing mechanism is used to movably connect on the outer surface of the wiring head, including a sealing shell, a sliding groove, a sealing cavity and a wedge-shaped block. It is used in combination with a sealing strip and a sealing plug to prevent fuel from entering the sealing mechanism.
Effectively prevent fuel from contacting the terminal directly, avoid damage to the insulation state and short circuit, reduce the risk of oil vapor explosion, and ensure the stable and safe use of the terminal.
Smart Images
Figure CN222759873U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electromagnetic valve fuel injectors, in particular to a diesel engine electromagnetic valve controlled fuel injector. Background Art
[0002] Solenoid valve injector is an important part of modern automobile fuel injection system, with high precision, fast response and high reliability. It controls the opening and closing of the needle valve through the solenoid valve to achieve precise injection control of high-pressure fuel. With the continuous development of automobile technology, solenoid valve injector will continue to play an important role in fuel injection system and promote the progress and development of the automobile industry.
[0003] A terminal head is fixedly installed on the solenoid valve injector body to transmit electrical signals. However, the connection between the wire and the terminal head is exposed. The fuel is conductive. Once it enters the wiring port, it will destroy the originally good insulation state, causing a short circuit between the wires or between the wires and metal parts. After the fuel enters the wiring port, it will quickly evaporate to form oil vapor. In a closed or semi-closed space, when the oil vapor mixes with the air to a certain concentration, it will explode when it encounters an open flame or electric spark, causing great harm to personnel and equipment. Therefore, we propose a new type of diesel engine solenoid valve controlled injector to solve the above problems. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a diesel engine solenoid valve controlled injector, which solves the problem that the connection between the wire and the terminal head is exposed, and the fuel is conductive. Once it enters the wiring port, it will destroy the originally good insulation state, causing a short circuit between the wires or between the wires and metal parts. After the fuel enters the wiring port, it will evaporate rapidly to form oil vapor. In a closed or semi-closed space, when the oil vapor mixes with the air to reach a certain concentration, it will explode when encountering an open flame or electric spark, causing great harm to personnel and equipment.
[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a diesel engine solenoid valve controlled injector includes an injector body, a terminal head is fixedly installed on one side of the injector body, a sealing mechanism is movably connected to the outer surface of the terminal head, and the sealing mechanism includes a sealing housing, a slide groove, a sealing cavity and a wedge block;
[0006] The sealing shell is movably sleeved on the outer surface of the terminal head, the sealing cavity is rotatably connected to the inside of the sealing shell, a slide groove is provided inside the sealing shell, the wedge block is fixedly installed on the outer surface of the sealing cavity, and the wedge block slides inside the slide groove.
[0007] Preferably, a fixing piece is fixedly installed at the connection between the sealing mechanism and the terminal head, and a lower flange is fixedly installed on the outer surface of the terminal head.
[0008] Preferably, an upper flange is fixedly mounted on the bottom of the sealing shell, the top of the lower flange abuts against the bottom of the upper flange, and the lower flange and the upper flange are internally threadedly connected with fixing bolts.
[0009] Preferably, a rotating disk is fixedly installed on the top of the sealed cavity, and an oil absorption sheet is fixedly installed inside the sealed cavity.
[0010] Preferably, a sealing plug is movably inserted into the top of the turntable.
[0011] Preferably, a sealing strip is fixedly mounted on the bottom of the upper flange, and the bottom of the sealing strip abuts against the lower flange.
[0012] Preferably, a sealing groove is provided at the bottom of the sealing cavity, and the sealing strip is movably engaged with the sealing groove.
[0013] The utility model discloses a diesel engine solenoid valve controlled fuel injector, which has the following beneficial effects: the device sets a sealing mechanism on the outer surface of the terminal head so that the fuel cannot directly contact the terminal head, and the combined use of the sealing strip and the sealing plug also prevents the fuel from entering the sealing mechanism through the gap, thereby ensuring the stability of the terminal head, solving the hidden danger of oil vapor, and meeting the needs of users. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the actual use of the sealing mechanism of the utility model;
[0017] Figure 3 This is a schematic diagram of the interior of the sealing housing of the utility model;
[0018] Figure 4 This is a schematic diagram of the interior of the sealing chamber of the utility model;
[0019] Figure 5 This is an exploded view of the sealing mechanism of the utility model.
[0020] In the figure: 1. injector body; 2. terminal head; 3. sealing mechanism; 301. sealing shell; 302. slide groove; 303. sealing chamber; 304. wedge block; 305. fixing piece; 3051. lower flange; 3052. upper flange; 3053. fixing bolt; 306. turntable; 307. sealing plug; 308. sealing strip; 309. sealing groove; 4. oil absorption sheet. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. 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.
[0022] The embodiment of the present application provides a diesel engine solenoid valve to control the injector, which solves the problem that the connection between the wire and the terminal head is exposed. The fuel is conductive and once it enters the wiring port, it will destroy the originally good insulation state, causing a short circuit between the wires or between the wires and metal parts. After the fuel enters the wiring port, it will evaporate rapidly to form oil vapor. In a closed or semi-closed space, when the oil vapor mixes with the air to reach a certain concentration, it will explode when encountering an open flame or electric spark, causing great harm to personnel and equipment.
[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0024] The utility model embodiment discloses a diesel engine solenoid valve controlled fuel injector.
[0025] According to the attached Figure 1-5 As shown, it comprises an injector body 1, a terminal head 2 is fixedly mounted on one side of the injector body 1, a sealing mechanism 3 is movably connected to the outer surface of the terminal head 2, and the sealing mechanism 3 comprises a sealing housing 301, a slide groove 302, a sealing cavity 303 and a wedge block 304;
[0026] The lower flange 3051 is fixed on the outer surface of the terminal head 2. When the device is in use, the upper flange 3052 is fixedly installed on the bottom of the sealing shell 301. The hole of the upper flange 3052 is aligned with the hole of the lower flange 3051, and it is fixed to the terminal head 2 by the fixing bolts 3053. The wire is passed through the sealing cavity 303 and electrically connected with the terminal head 2. The wedge block 304 on one side of the sealing cavity 303 is aligned with the slide groove 302 inside the sealing shell 301 so that it is stuck in the slide groove 302. The width of the slide groove 302 gradually narrows from top to bottom, so that the wedge block 304 has greater resistance as it goes down, until the bottom resistance reaches the maximum and it is stuck, thereby achieving the effect of fixing the sealing cavity 303. Finally, the sealing plug 307 is inserted into the top of the sealing cavity 303. The inside of the sealing plug 307 is against the outer surface of the wire, so that the fuel will not enter the sealing mechanism 3 from the top.
[0027] The sealing shell 301 is movably sleeved on the outer surface of the terminal head 2, and the sealing cavity 303 is rotatably connected to the inside of the sealing shell 301. A slide groove 302 is opened inside the sealing shell 301, and the wedge block 304 is fixedly installed on the outer surface of the sealing cavity 303, and the wedge block 304 slides inside the slide groove 302.
[0028] A fixing piece 305 is fixedly installed at the connection between the sealing mechanism 3 and the terminal head 2 , and a lower flange 3051 is fixedly installed on the outer surface of the terminal head 2 .
[0029] An upper flange 3052 is fixedly mounted on the bottom of the sealing housing 301 , the top of the lower flange 3051 abuts against the bottom of the upper flange 3052 , and fixing bolts 3053 are connected to the inner threads of the lower flange 3051 and the upper flange 3052 .
[0030] A turntable 306 is fixedly installed on the top of the sealed cavity 303, and an oil absorption sheet 4 is fixedly installed inside the sealed cavity 303. If a small amount of fuel enters the sealed cavity 303, it will be quickly sucked into the oil absorption sheet 4 so that it cannot affect the terminal head 2.
[0031] A sealing plug 307 is movably inserted at the top of the turntable 306, and the outer surface of the sealing plug 307 abuts against the inner wall of the sealing cavity 303, and the inner wall of the sealing plug 307 abuts against the outer surface of the line, so that the fuel cannot enter the interior through the top of the sealing mechanism 3, thereby affecting the safety of the terminal head 2.
[0032] A sealing strip 308 is fixedly mounted on the bottom of the upper flange 3052 , and the bottom of the sealing strip 308 abuts against the lower flange 3051 .
[0033] A sealing groove 309 is provided at the bottom of the sealing cavity 303, and a sealing strip 308 is movably connected to the sealing groove 309. By using the sealing strip 308 and the sealing groove 309 in combination, the fuel cannot enter the interior of the sealing mechanism 3 through the gap at the connection between the upper flange 3052 and the lower flange 3051, thereby ensuring that the terminal 2 will not be affected by the fuel and ensuring the subsequent normal use of the solenoid valve injector.
[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A diesel engine solenoid valve controlled fuel injector, comprising a fuel injector body (1), a terminal head (2) being fixedly mounted on one side of the fuel injector body (1), characterized in that: The outer surface of the terminal head (2) is movably connected with a sealing mechanism (3), wherein the sealing mechanism (3) comprises a sealing housing (301), a slide groove (302), a sealing cavity (303) and a wedge block (304); The sealing shell (301) is movably sleeved on the outer surface of the terminal head (2), the sealing cavity (303) is rotatably connected to the inside of the sealing shell (301), a slide groove (302) is provided inside the sealing shell (301), the wedge block (304) is fixedly mounted on the outer surface of the sealing cavity (303), and the wedge block (304) slides inside the slide groove (302).
2. A diesel engine solenoid valve controlled injector according to claim 1, characterized in that: A fixing piece (305) is fixedly mounted at the connection between the sealing mechanism (3) and the terminal head (2), and a lower flange (3051) is fixedly mounted on the outer surface of the terminal head (2).
3. A diesel engine solenoid valve controlled injector according to claim 2, characterized in that: An upper flange (3052) is fixedly mounted on the bottom of the sealing shell (301), the top of the lower flange (3051) abuts against the bottom of the upper flange (3052), and the lower flange (3051) and the upper flange (3052) are internally threadedly connected with fixing bolts (3053).
4. A diesel engine solenoid valve controlled fuel injector according to claim 1, characterized in that: A rotating disk (306) is fixedly mounted on the top of the sealed cavity (303), and an oil absorbing sheet (4) is fixedly mounted inside the sealed cavity (303).
5. A diesel engine solenoid valve controlled fuel injector according to claim 4, characterized in that: A sealing plug (307) is movably inserted into the top of the rotating disk (306).
6. A diesel engine solenoid valve controlled fuel injector according to claim 3, characterized in that: A sealing strip (308) is fixedly mounted on the bottom of the upper flange (3052), and the bottom of the sealing strip (308) abuts against the lower flange (3051).
7. A diesel engine solenoid valve controlled fuel injector according to claim 6, characterized in that: A sealing groove (309) is provided at the bottom of the sealing cavity (303), and the sealing strip (308) is movably engaged with the sealing groove (309).