Lightweight assembly type fuel oil isolation sealing valve

Abstract

The invention discloses a light-weight assembly type fuel oil isolation sealing valve and relates to the technical field of sealing valves, a light-weight sealing assembly is installed at the top of a main valve body, an upper valve cover is installed at the top end of the main valve body in an embedded mode, an electromagnetic coil is installed at the top end in the upper valve cover, the electromagnetic coil is connected to the outer side of a magnetic conduction yoke pipe in a sleeving mode, and the magnetic conduction yoke pipe is connected to the outer side of a metal valve element in a sleeving mode; a clamping ring is arranged at the bottom end of the interior of the bottom end of the metal valve element, a buffering top block is placed at the top end of the clamping ring, the top end of the buffering top block is connected with the top end of a reset spring in a clamped mode, and an assembling sealing assembly is installed at the bottom end of the main valve body. The sealing valve pad closes the exchange hole again, the movement stroke distance is reduced through the magnetic field force of the electromagnetic coil product, the noise is reduced through the relation between force and distance, the buffering effect of the buffering ejector block, the sealing valve pad and the buffering frame is matched, multiple structures play a role at the same time, and the generated noise is further reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing valves, and in particular to a lightweight assembled fuel isolation sealing valve. Background Art

[0002] The fuel tank isolation valve is an important component in the automobile fuel system. It is a component used to control the automobile fuel system. It is usually used to prevent fuel vapor from entering the engine and exhaust system. Its main function is to close or open the passage of the fuel system under specific conditions. If the fuel tank isolation valve fails or is damaged, it may affect the engine exhaust system.

[0003] Patent application number CN202322299074.7 mentions a "control device for a marine fuel isolation valve." The patent uses a snap-fit ​​connection between the sealing rubber ring and the outer wall of the connecting pipe head, which prevents the connection from falling off or shifting, resulting in poor sealing, and improves the connection sealing of the device.

[0004] However, during use, the above-mentioned isolation valve has a long moving distance when opening and closing the valve and heavy moving parts, which makes a lot of noise when opening and closing the valve. In addition, during maintenance, assembly is time-consuming and disassembly and installation are inconvenient, which leads to low maintenance efficiency of disassembly and installation. Summary of the Invention

[0005] The present invention provides a lightweight assembled fuel isolation sealing valve, which can effectively solve the problems raised in the above-mentioned background technology, such as the long moving distance when opening and closing the valve and the heavy movable parts during use, the large noise when opening and closing the valve, the time-consuming assembly and the inconvenient disassembly and installation during maintenance, which in turn leads to low maintenance efficiency of disassembly and installation.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a lightweight assembled fuel isolation sealing valve, comprising a main valve body, an inlet pipe welded through the top end of one side of the main valve body, and an outlet pipe welded through the lower end of the other side of the main valve body, a lightweight sealing assembly mounted on the top of the main valve body, and the lightweight sealing assembly including an upper valve cover;

[0007] An upper valve cover is embedded in the top of the main valve body, an electromagnetic coil is installed on the top of the upper valve cover, the electromagnetic coil is sleeved on the outside of the magnetic yoke tube, the magnetic yoke tube is sleeved on the outside of the metal valve core, a clamping ring is provided at the bottom end of the bottom end of the metal valve core, a buffer top block is placed on the top of the clamping ring, and the top of the buffer top block is clamped and connected to the top of the reset spring;

[0008] The bottom surface of the buffer top block is clamped and connected to the clamping column, the bottom end of the clamping column is connected to the valve stem, the bottom end of the valve stem is welded with a valve plate, the outer side of the valve plate is sleeved with a sealing valve pad, and the bottom end of the upper valve cover is welded with a buffer frame.

[0009] According to the above technical solution, the bottom end of the magnetic yoke tube is clamped and connected to the top end of the upper valve seat, and a leak-proof rubber ring is sleeved at the position where the top end of the upper valve seat contacts the inner side of the magnetic yoke tube.

[0010] According to the above technical solution, the top end of the magnetic yoke tube is closed, the top end diameter of the magnetic yoke tube is small, and the bottom end diameter is large, and the top end of the return spring squeezes the inner top end of the magnetic yoke tube.

[0011] According to the above technical solution, a clamping male end is provided at the bottom end of the upper valve cover, and a clamping female end groove is opened on the top surface of the upper valve seat corresponding to the bottom end of the upper valve cover, and the clamping male end is installed inside the clamping female end groove.

[0012] According to the above technical solution, an isolation plate is welded at the bottom end of the upper valve cover in the middle of the main valve body, and an exchange hole is opened in the middle of the isolation plate. The center axis of the clamping column, the center axis of the valve stem, the center of the valve plate and the center of the exchange hole all coincide on the same vertical line.

[0013] According to the above technical solution, the clamping column is approximately cylindrical and is composed of four circular arrays of clamping claws. The outer side of the clamping column is movably connected to the top of the clamping ring.

[0014] According to the above technical solution, an assembly sealing component is installed at the bottom end of the main valve body, and the assembly sealing component includes a fixing seat;

[0015] The bottom end of the main valve body is clamped and installed with a fixing seat, the edge of the top surface of the fixing seat is welded with pillars in a circumferential array, the top end of the inner side of the pillar is welded with a buckle, the middle support frame is welded with the middle part of the top surface of the fixing seat, the top end of the middle support frame is clamped and connected to the bottom end of the bottom support spring, the top end of the bottom support spring is clamped and connected to the middle part of the bottom end of the sealing top cover, the edge of the sealing top cover is bonded with a reinforcement ring, and the middle part of the top end of the sealing top cover is installed with a top sealing plate.

[0016] According to the above technical solution, the fixing seat and the bottom end of the main valve body are connected by interference fit, and a weight-reducing groove is provided on the bottom surface of the fixing seat.

[0017] According to the above technical solution, the buckle is overlapped with the outer edge of the reinforcement ring, and the sealing top cover is in the shape of an inverted pot with a high top and a low edge.

[0018] According to the above technical solution, the top end of the top sealing plate is embedded in the exchange hole, and the top sealing plate and the exchange hole are transitionally matched.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. A lightweight sealing component is provided. The metal valve core is pulled upward by the magnetic force of the electromagnetic coil, driving the valve plate and the sealing valve pad at the bottom of the valve stem to move upward synchronously, opening the top of the exchange hole. The gas entering the pipe will then enter the main valve body, pushing open the sealing top cover under the exchange hole, no longer blocking the exchange hole, and the inlet pipe and the outlet pipe are connected for smooth ventilation. When the electromagnetic coil is powered off, the metal valve core moves downward and resets, and the sealing valve pad re-seals the exchange hole. The magnetic field force of the electromagnetic coil product reduces the movement stroke distance, and the relationship between force and distance achieves noise reduction. Combined with the buffering effect of the buffer top block, the sealing valve pad and the buffer rack, multiple structures work simultaneously to further reduce the noise generated.

[0021] 2. An assembly sealing component is provided. The bottom support spring is clamped in the middle support frame. The top of the bottom support spring is clamped in the sealing top cover, and then the top of the sealing top cover is pressed until the reinforcement ring is embedded in the buckle of the pillar. Then the assembled assembly sealing component is clamped in the bottom end of the main valve body to complete the assembly operation. The assembly is simple and fast, which improves the assembly efficiency and is also convenient for maintenance personnel to install and disassemble. The sealing top cover is fixed by a buckle to prevent the bottom support spring and the sealing top cover from detaching during maintenance, thereby improving the safety of the connection.

[0022] When assembling the sealing valve, after installing the electromagnetic coil, magnetic yoke tube, metal valve core and clamping column and other structures in the upper valve cover, the lower end of the upper valve cover is clamped and installed with the upper valve seat, and the upper valve cover is installed on the top of the main valve body. The lightweight sealing component is clamped and installed on the top of the main valve body, and the top of the isolation plate is closed. The sealing component is clamped and installed on the bottom end of the main valve body, and the bottom end of the isolation plate is closed. The overall structure is simple and quick to assemble and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0024] In the attached figure:

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 is a schematic cross-sectional view of the present invention;

[0027] Figure 3 This invention Figure 2 Schematic diagram of the A region structure;

[0028] Figure 4 It is a schematic structural diagram of the lightweight sealing assembly of the present invention;

[0029] Figure 5 This invention Figure 4 Schematic diagram of the structure of region B;

[0030] Figure 6 It is a schematic structural diagram of the assembled sealing component of the present invention;

[0031] Figure 7 This is a schematic diagram of the installation structure of the top sealing plate of the present invention;

[0032] Numbers in the figure: 1, main valve body; 2, inlet pipe; 3, outlet pipe;

[0033] 4. Lightweight sealing assembly; 401. Upper valve cover; 402. Solenoid coil; 403. Magnetic yoke; 404. Metal valve core; 405. Clamping ring; 406. Buffer top block; 407. Return spring; 408. Upper valve seat; 409. Leak-proof rubber ring; 410. Clamping column; 411. Valve stem; 412. Valve plate; 413. Sealing valve pad; 414. Buffer rack; 415. Isolation plate; 416. Exchange hole;

[0034] 5. Assemble the sealing assembly; 501, fixing seat; 502, pillar; 503, buckle; 504, middle support frame; 505, bottom support spring; 506, sealing top cover; 507, reinforcement ring; 508, top sealing plate. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0036] Example: Figure 1-7 As shown, the present invention provides a technical solution for a lightweight assembled fuel isolation sealing valve, comprising a main valve body 1, an inlet pipe 2 is welded through the top end of one side of the main valve body 1, and an outlet pipe 3 is welded through the lower end of the other side of the main valve body 1. A lightweight sealing assembly 4 is installed on the top of the main valve body 1, and the lightweight sealing assembly 4 includes an upper valve cover 401, an electromagnetic coil 402, a magnetic yoke tube 403, a metal valve core 404, a clamping ring 405, a buffer top block 406, a return spring 407, an upper valve seat 408, a leak-proof rubber ring 409, a clamping column 410, a valve stem 411, a valve plate 412, a sealing valve pad 413, a buffer frame 414, an isolation plate 415 and an exchange hole 416;

[0037] The top of the main valve body 1 is embedded with an upper valve cover 401, and an electromagnetic coil 402 is installed on the top of the upper valve cover 401. The electromagnetic coil 402 is sleeved on the outside of the magnetic yoke tube 403, and the magnetic yoke tube 403 is sleeved on the outside of the metal valve core 404. A clamping ring 405 is provided at the bottom end of the metal valve core 404, and a buffer top block 406 is placed on the top of the clamping ring 405. The top of the buffer top block 406 is clamped and connected to the top of the reset spring 407. The top of the magnetic yoke tube 403 is closed, and the top diameter of the magnetic yoke tube 403 is small and the bottom diameter is large. The reset spring The top of the spring 407 squeezes the top of the inner part of the magnetic yoke tube 403, which is convenient for installing and fixing the reset spring 407. The bottom of the magnetic yoke tube 403 is connected to the top of the upper valve seat 408 by clamping. The top of the upper valve seat 408 contacts the inner side of the magnetic yoke tube 403, which is sleeved with a leak-proof rubber ring 409 to improve the sealing of the connection and prevent leakage. The bottom of the upper valve cover 401 is provided with a clamping male end, and the top surface of the upper valve seat 408 is provided with a clamping female end groove corresponding to the bottom of the upper valve cover 401. The clamping male end is installed in the clamping female end groove to facilitate the installation and fixing of the metal valve core 404.

[0038] The bottom surface of the buffer top block 406 is clamped and connected to the clamping column 410. The clamping column 410 is approximately cylindrical and is composed of four circular arrays of clamping claws. The outer side of the clamping column 410 is movably overlapped on the top of the clamping ring 405 to prevent the clamping column 410 from separating from the metal valve core 404. The bottom end of the clamping column 410 is connected to the valve stem 411, and the bottom end of the valve stem 411 is welded with a valve plate 412. The outer side of the valve plate 412 is sleeved with a sealing valve gasket 413, and the bottom end of the upper valve cover 401 is welded with a buffer frame 414. The middle part of the main valve body 1 is welded with an isolation plate 415 at the bottom end of the upper valve cover 401, and the middle part of the isolation plate 415 is provided with an exchange hole 416. The central axis of the clamping column 410, the central axis of the valve stem 411, the center of the valve plate 412 and the center of the exchange hole 416 all coincide on the same vertical line, so as to improve the smoothness of the opening and closing of the valve.

[0039] The bottom end of the main valve body 1 is equipped with an assembly seal assembly 5, which includes a fixing seat 501, a support 502, a buckle 503, a middle support frame 504, a bottom support spring 505, a sealing top cover 506, a reinforcement ring 507 and a top sealing plate 508;

[0040] The bottom end of the main valve body 1 is clamped and installed with a fixing seat 501. The fixing seat 501 and the bottom end of the main valve body 1 are connected by interference fit. A weight-reducing groove is provided on the bottom surface of the fixing seat 501 to facilitate the combination of the fixing seat 501 and the main valve body 1. The circumferential array of the edge of the top surface of the fixing seat 501 is welded with pillars 502. A buckle 503 is welded on the top end of the inner side of the pillar 502. A middle support frame 504 is welded in the middle of the top surface of the fixing seat 501. The top end of the middle support frame 504 is clamped and connected to the bottom end of the bottom support spring 505. The top of the bottom support spring 505 The end is clipped and connected to the middle of the bottom end of the sealing top cover 506, and a reinforcement ring 507 is bonded to the edge of the sealing top cover 506. A top sealing plate 508 is installed in the middle of the top end of the sealing top cover 506. The buckle 503 overlaps the outer edge of the reinforcement ring 507. The sealing top cover 506 is an inverted pot shape with a high top and a low edge. The top of the top sealing plate 508 is embedded in the inside of the exchange hole 416. The top sealing plate 508 and the exchange hole 416 are transitionally matched, which facilitates the top sealing plate 508 on the top surface of the sealing top cover 506 to close the exchange hole 416.

[0041] After the top of the valve body 1 is assembled, the valve seat 408 is connected to the bottom of the valve cover 401, and the valve seat 408 is connected to the bottom of the valve cover 401.

[0042] When the isolation sealing valve is working, the power of the electromagnetic coil 402 is turned on, and the metal valve core 404 can be pulled up by the magnetic force of the electromagnetic coil 402, and the clamping column 410 will also clamp the metal valve core 404, driving the valve plate 412 and the sealing valve pad 413 at the bottom end of the valve stem 411 to move up synchronously, opening the top of the exchange hole 416, and then the gas entering the pipe 2 will enter the main valve body 1, pushing open the sealing top cover 506 under the exchange hole 416, and the bottom support spring 505 will shrink and no longer block the exchange hole 416, so that the inlet pipe 2 and the outlet pipe 3 are connected and ventilated smoothly. When the electromagnetic coil 402 is de-energized, the metal valve core 404 moves down and resets under the push of the reset spring 407, and the sealing valve pad 413 re-seals the exchange hole 416. The bottom end is also closed by the sealing top cover 506 on the top of the reset bottom support spring 505, and the inlet pipe 2 and the outlet pipe 3 are not connected. By increasing the length of the copper wire, reducing the diameter of the copper wire, reducing the product's external volume, increasing the magnetic conductivity design, and adjusting the material, the magnetic strength and structure are increased. The magnetic field force of the electromagnetic coil 402 product is used to reduce the movement stroke distance. Through the relationship between force and distance, noise reduction is achieved. With the buffering effect of the buffer top block 406, the sealing valve pad 413 and the buffer frame 414, multiple structures work at the same time to further reduce the noise generated. The clamping column 410, valve stem 411, valve plate 412 and buffer frame 414 are all injection molded parts, which reduce the volume while reducing the weight, achieve the goal of lightweight, and are more convenient to use.

[0043] The top of the main valve body 1 is snap-fitted with a lightweight sealing component 4, which closes the top of the isolation plate 415. The bottom of the main valve body 1 is snap-fitted with an assembled sealing component 5, which closes the bottom of the isolation plate 415. The overall structure is simple and quick to assemble and easy to operate.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A lightweight assembled fuel isolation sealing valve, comprising a main valve body (1), characterized in that: An inlet pipe (2) is welded through the top end of one side of the main valve body (1), and a discharge pipe (3) is welded through the lower end of the other side of the main valve body (1). A lightweight sealing assembly (4) is installed on the top of the main valve body (1), and the lightweight sealing assembly (4) includes an upper valve cover (401); An upper valve cover (401) is embedded in the top of the main valve body (1), an electromagnetic coil (402) is installed on the top of the upper valve cover (401), the electromagnetic coil (402) is sleeved on the outside of the magnetic yoke tube (403), the magnetic yoke tube (403) is sleeved on the outside of the metal valve core (404), a clamping ring (405) is provided at the bottom end of the metal valve core (404), a buffer top block (406) is placed on the top of the clamping ring (405), and the top of the buffer top block (406) is clamped and connected to the top of the reset spring (407); The bottom surface of the buffer top block (406) is connected to the clamping column (410), the bottom end of the clamping column (410) is connected to the valve stem (411), the bottom end of the valve stem (411) is welded with a valve plate (412), the outer side of the valve plate (412) is sleeved with a sealing valve gasket (413), and the bottom end of the upper valve cover (401) is welded with a buffer frame (414).

2. A lightweight assembled fuel isolation sealing valve according to claim 1, characterized in that: The bottom end of the magnetic yoke tube (403) is clamped and connected to the top end of the upper valve seat (408), and a leak-proof rubber ring (409) is sleeved at the position where the top end of the upper valve seat (408) contacts the inner side of the magnetic yoke tube (403).

3. A lightweight assembled fuel isolation sealing valve according to claim 1, characterized in that: The top end of the magnetic yoke tube (403) is closed, and the top end of the magnetic yoke tube (403) has a small diameter and the bottom end has a large diameter. The top end of the return spring (407) presses the top end inside the magnetic yoke tube (403).

4. A lightweight assembled fuel isolation sealing valve according to claim 1, characterized in that: The bottom end of the upper valve cover (401) is provided with a clamping male end, and the top surface of the upper valve seat (408) is provided with a clamping female end groove corresponding to the bottom end of the upper valve cover (401), and the clamping male end is installed inside the clamping female end groove.

5. A lightweight assembled fuel isolation sealing valve according to claim 1, characterized in that: An isolation plate (415) is welded to the middle of the main valve body (1) at the bottom end of the upper valve cover (401), and an exchange hole (416) is opened in the middle of the isolation plate (415). The center axis of the clamping column (410), the center axis of the valve stem (411), the center of the valve plate (412) and the center of the exchange hole (416) all coincide on the same vertical line.

6. A lightweight assembled fuel isolation sealing valve according to claim 1, characterized in that: The clamping column (410) is approximately cylindrical and is composed of four clamping claws in a circumferential array. The outer side of the clamping column (410) is movably connected to the top of the clamping ring (405).

7. A lightweight assembled fuel isolation sealing valve according to claim 5, characterized in that: An assembly sealing component (5) is installed at the bottom end of the main valve body (1), and the assembly sealing component (5) includes a fixing seat (501); The bottom end of the main valve body (1) is clamped and installed with a fixing seat (501), the top edge of the fixing seat (501) is welded with a circumferential array of pillars (502), the inner top end of the pillars (502) is welded with a buckle (503), the middle part of the top surface of the fixing seat (501) is welded with a middle support frame (504), the top end of the middle support frame (504) is clamped and connected to the bottom end of the bottom support spring (505), the top end of the bottom support spring (505) is clamped and connected to the middle part of the bottom end of the sealing top cover (506), the edge of the sealing top cover (506) is bonded with a reinforcement ring (507), and the middle part of the top end of the sealing top cover (506) is installed with a top sealing plate (508).

8. A lightweight assembled fuel isolation sealing valve according to claim 7, characterized in that: The fixing seat (501) and the bottom end of the main valve body (1) are connected by interference fit, and a weight-reducing groove is provided on the bottom surface of the fixing seat (501).

9. A lightweight assembled fuel isolation sealing valve according to claim 7, characterized in that: The buckle (503) is overlapped with the outer edge of the reinforcement ring (507), and the sealing top cover (506) is in the shape of an inverted pot with a high top and a low edge.

10. A lightweight assembled fuel isolation sealing valve according to claim 7, characterized in that: The top end of the top sealing plate (508) is embedded in the interior of the exchange hole (416), and the top sealing plate (508) and the exchange hole (416) are in transition fit.

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