Sealing structure of centrally-mounted VVT electromagnetic valve

Abstract

The utility model relates to the technical field of VVT (Variable Valve Timing) electromagnetic valves, and provides a sealing structure of a centrally-mounted VVT electromagnetic valve, which comprises a valve seat and flange plates, the flange plates are fixed at the two ends of the valve seat, a valve cover is fixed at the top end of the valve seat, a first sealing ring is fixed at the bottom end of the valve cover, a sealing mechanism is arranged in the valve seat, and the sealing mechanism is arranged in the valve seat. A valve rod is fixed to the top end of the sealing mechanism. The filter structure is arranged, the fixing frame is fixed to the air inlet of the valve seat, under the action of the filter screen, impurities in media can be filtered out, the internal structure of the valve seat can be effectively protected, when the clamping block moves to the outside of the clamping groove, the fixing frame and the valve seat are separated at the moment, the filter screen can be cleaned and replaced conveniently, and the service life of the valve seat is prolonged. According to the sealing structure, the function of conveniently filtering impurities is achieved, and therefore the use applicability of the sealing structure of the middle-mounted VVT electromagnetic valve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to VVT solenoid valve technical field, especially in a kind of sealing structure of middle-mounted VVT solenoid valve. BACKGROUND

[0002] Middle-mounted VVT solenoid valve is a key component in variable valve timing system, mainly used to control the admission or exhaust process of engine, to ensure the sealing performance of valve core when closing, prevent gas leakage, thus a kind of sealing structure of middle-mounted VVT solenoid valve will be used;

[0003] Therefore, the patent with the publication number CN206861018U discloses a sealing structure of middle-mounted VVT solenoid valve, the shell seat includes a bottom closed, top open shell base and a bottom seat sleeve coaxially fixed in the middle of the shell base, the outer shell includes a through hole in the middle of the outer shell top plate and an outer shell side plate fixedly connected to the outer circumferential surface of the outer shell top plate, the outer shell side plate is arranged between the gap of the shell base and the bottom seat sleeve;The top of the guide sleeve is circumferentially welded and fixed with the outer shell top plate;The top of the shell base is provided with an outer sealing ring, and the through hole of the outer shell top plate is provided with a front yoke sleeve in interference fit.Compared with the traditional structure, two parts of split riveting and inner sealing ring are reduced, and the process cost is reduced;The overall fillet on the outer shell and the continuous welding structure at the outer shell and the guide sleeve have strong sealing reliability;The interference fit length of the front yoke sleeve and the outer shell is increased, and it is more difficult to come out after assembly;Even if the inner sealing structure fails, hydraulic oil will not leak to the outside of the engine;

[0004] The sealing structure of the above-mentioned middle-mounted VVT solenoid valve does not leak hydraulic oil to the outside of the engine during use, but it is not convenient to filter impurities in the medium during use, which is not convenient to effectively protect the solenoid valve, and the applicability is low during use. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a sealing structure of middle-mounted VVT solenoid valve to solve the defect that the existing sealing structure of middle-mounted VVT solenoid valve is not convenient to filter.

[0006] In order to solve the above technical problems, the utility model provides the following technical scheme: a sealing structure of middle-mounted VVT solenoid valve, including valve seat and flange plate;

[0007] Both ends of the valve seat are fixed with flange plates, the top end of the valve seat is fixed with a valve cover, and the bottom end of the valve cover is fixed with a first sealing ring;

[0008] The inside of the valve seat is provided with a sealing mechanism, and the top end of the sealing mechanism is fixed with a valve rod;

[0009] One end of the valve seat interior is provided with a filter structure, the filter structure includes a groove opened in one end of the valve seat interior, a fixed frame is arranged in the groove, a filter screen is arranged in the fixed frame, clamping grooves are opened at both ends of one side of the fixed frame in the valve seat interior, clamping blocks are arranged in the clamping grooves, and a reserved groove is arranged in the clamping block.

[0010] When the device is used, the filter structure is arranged, the function that the device is convenient for filtering impurities is realized, and therefore the applicability of the sealing structure of the middle-mounted VVT electromagnetic valve in use is improved; the sealing mechanism is arranged, the function that the device is convenient for preventing leakage is realized, and therefore the convenience of the sealing structure of the middle-mounted VVT electromagnetic valve in use is improved.

[0011] Preferably, handles are fixed at both ends of one side of the groove, and the clamping block and the valve seat form a clamping structure through the clamping groove. The fixed frame is fixed at the air inlet of the valve seat, and under the action of the filter screen, impurities in the medium can be filtered, and the internal structure of the valve seat can be effectively protected.

[0012] Preferably, one end of the clamping block extends into the interior of the groove and is fixedly connected with one side of the fixed frame. When the clamping block moves to the outside of the clamping groove, the fixed frame and the valve seat are separated from each other, so that the filter screen can be cleaned and replaced.

[0013] Preferably, the outer side of the first sealing ring is in abutment with the inner wall of the valve seat. Under the action of the first sealing ring, the sealing property between the valve cover and the valve seat is enhanced.

[0014] Preferably, the sealing mechanism comprises a movable plate, a valve core, a placing groove and a second sealing ring, the valve core is arranged in the interior of the valve seat, the movable plate is fixed at the top end of the valve core, the placing groove is opened at the outer side of the top of the valve core, and the second sealing ring is arranged in the placing groove.

[0015] Preferably, the top end of the movable plate is fixedly connected with the bottom end of the valve rod, and the second sealing ring and the valve core form a clamping structure through the placing groove. When the second sealing ring moves to the outside of the placing groove, the second sealing ring can be replaced.

[0016] Preferably, a cavity is arranged in the interior of the second sealing ring, and the outer side of the second sealing ring is in abutment with the inner side of the valve seat. Under the action of the cavity, the second sealing ring is deformed when being extruded, and under the action of the second sealing ring, the sealing property between the valve core and the valve seat is enhanced, and leakage is avoided.

[0017] The sealing structure of the middle-mounted VVT electromagnetic valve has the advantages that:

[0018] By setting up the filter structure, by fixing the fixed frame in the air inlet of the valve seat, under the action of the filter screen, the impurities in the medium can be filtered, the internal structure of the valve seat can be effectively protected, when the clamping block moves to the outside of the clamping groove, the fixed frame and the valve seat are separated from each other at this time, so that the filter screen is cleaned and replaced, the function of the device is realized, thereby the applicability of the sealing structure of the middle VVT electromagnetic valve in use is improved;

[0019] By setting up the sealing mechanism, under the action of the cavity, the second sealing ring is deformed when being extruded, under the action of the second sealing ring, the sealing property between the valve core and the valve seat is enhanced, the leakage phenomenon is avoided, when the second sealing ring moves to the outside of the placing groove, the second sealing ring is replaced, the function of the device is realized, thereby the convenience of the sealing structure of the middle VVT electromagnetic valve in use is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0021] Figure 2 It is a front view cross section structure schematic view of the utility model;

[0022] Figure 3 It is a three-dimensional structure schematic view of the utility model; Figure 2 It is an enlarged structure schematic view of the middle A;

[0023] Figure 4 It is a sealing mechanism cross section three-dimensional structure schematic view of the utility model;

[0024] Figure 5 It is a filter structure three-dimensional structure schematic view of the utility model.

[0025] The reference signs in the drawing are explained as follows: 1, valve seat; 2, flange plate; 3, filter structure; 301, groove; 302, fixed frame; 303, filter screen; 304, clamping groove; 305, clamping block; 306, reserved groove; 4, valve cover; 5, first sealing ring; 6, valve rod; 7, sealing mechanism; 701, movable plate; 702, valve core; 703, placing groove; 704, second sealing ring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] Please refer toFigures 1-5 The utility model provides a kind of sealing structure of middle-mounted VVT solenoid valve, including valve seat 1 and flange plate 2, both ends of valve seat 1 are fixed with flange plate 2, the top end of valve seat 1 is fixed with valve cover 4, the bottom end of valve cover 4 is fixed with first sealing ring 5, the inside of valve seat 1 is provided with sealing mechanism 7, sealing mechanism 7 includes movable plate 701, valve core 702, placement groove 703 and second sealing ring 704, valve core 702 is arranged in the inside of valve seat 1, the top end of valve core 702 is fixed with movable plate 701, the outside of valve core 702 top is equipped with placement groove 703, the inside of placement groove 703 is provided with second sealing ring 704, the top end of movable plate 701 is fixedly connected with the bottom end of valve stem 6, second sealing ring 704 and valve core 702 form engagement structure by placement groove 703, the inside of second sealing ring 704 is provided with cavity, the outside of second sealing ring 704 is in abutment with the inside of valve seat 1, the outside of first sealing ring 5 is in abutment with the inner wall of valve seat 1.

[0028] Referring to Figure 2 And Figure 4 Second sealing ring 704 is moved to the inside of placement groove 703, under the action of cavity, make second sealing ring 704 occur deformation when extruding, under the action of second sealing ring 704, the sealing property between valve core 702 and valve seat 1 is enhanced, avoid leakage phenomenon, when second sealing ring 704 moves to the outside of placement groove 703, to replace second sealing ring 704.

[0029] The top end of sealing mechanism 7 is fixed with valve stem 6, one end in valve seat 1 is equipped with filter structure 3, filter structure 3 includes recess 301 in one end in valve seat 1, the inside of recess 301 is provided with fixed frame 302, the inside of fixed frame 302 is provided with filter screen 303, both ends of one side of fixed frame 302 in valve seat 1 are equipped with clamping groove 304, the inside of clamping groove 304 is provided with clamping block 305, the inside of clamping block 305 is provided with reserved slot 306, both ends of one side of recess 301 are fixed with handle, clamping block 305 and valve seat 1 form engagement structure by clamping groove 304, one end of clamping block 305 extends to the inside of recess 301 and is fixedly connected with one side of fixed frame 302.

[0030] Referring to Figure 2 And Figure 3As shown, by moving the fixed frame 302 to the inside of the groove 301 through the handle, one end of the clamping block 305 is in abutment with one end of the clamping groove 304, the fixed frame 302 is pushed, under the action of the reserved groove 306, the fixed frame 302 drives the clamping block 305 to move to the inside of the clamping groove 304, at this time the fixed frame 302 and the valve seat 1 are fixed to each other, under the action of the filter screen 303, impurities in the medium can be filtered, the internal structure of the valve seat 1 can be effectively protected, by moving the clamping block 305 to the outside of the clamping groove 304 through the handle, at this time the fixed frame 302 and the valve seat 1 are separated from each other, so as to clean and replace the filter screen 303.

[0031] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A sealing structure for a centrally located VVT solenoid valve, comprising a valve seat (1) and a flange (2); Its features are: The valve seat (1) is fixed with flanges (2) at both ends, the valve cover (4) is fixed at the top of the valve seat (1), and the first sealing ring (5) is fixed at the bottom of the valve cover (4). The valve seat (1) is provided with a sealing mechanism (7) inside, and a valve stem (6) is fixed to the top of the sealing mechanism (7); A filter structure (3) is installed at one end inside the valve seat (1). The filter structure (3) includes a groove (301) opened at one end inside the valve seat (1). A fixing frame (302) is provided inside the groove (301). A filter screen (303) is provided inside the fixing frame (302). Both ends of the fixing frame (302) inside the valve seat (1) are provided with snap-fit ​​grooves (304). A snap-fit ​​block (305) is provided inside the snap-fit ​​groove (304). A reserved groove (306) is provided inside the snap-fit ​​block (305).

2. The sealing structure of a centrally located VVT solenoid valve according to claim 1, characterized in that: Handles are fixed at both ends on one side of the groove (301), and the snap-fit ​​block (305) and the valve seat (1) form a snap-fit ​​structure through the snap-fit ​​groove (304).

3. The sealing structure of a centrally located VVT solenoid valve according to claim 1, characterized in that: One end of the snap-fit ​​block (305) extends into the interior of the groove (301) and is fixedly connected to one side of the fixing frame (302).

4. The sealing structure of a centrally located VVT solenoid valve according to claim 1, characterized in that: The outer side of the first sealing ring (5) abuts against the inner wall of the valve seat (1).

5. The sealing structure of a centrally located VVT solenoid valve according to claim 1, characterized in that: The sealing mechanism (7) includes a movable plate (701), a valve core (702), a placement groove (703), and a second sealing ring (704). The valve core (702) is disposed inside the valve seat (1). The movable plate (701) is fixed to the top of the valve core (702). A placement groove (703) is provided on the outer side of the top of the valve core (702). The second sealing ring (704) is disposed inside the placement groove (703).

6. The sealing structure of a centrally located VVT solenoid valve according to claim 5, characterized in that: The top end of the movable plate (701) is fixedly connected to the bottom end of the valve stem (6), and the second sealing ring (704) and the valve core (702) form a locking structure through the placement groove (703).

7. The sealing structure of a centrally located VVT solenoid valve according to claim 5, characterized in that: The second sealing ring (704) has a cavity inside, and the outer side of the second sealing ring (704) abuts against the inner side of the valve seat (1).

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