Corrosion-resistant and lightweight EGR (Exhaust Gas Recirculation) valve

Abstract

The utility model discloses a corrosion-resistant and lightweight EGR valve, and relates to the technical field of valve bodies. Comprising a body, a shaft sleeve is connected into the body, a rubber coating injection molding assembly is connected to the axis of the shaft sleeve, one end of the rubber coating injection molding assembly penetrates through the shaft sleeve, the other end of the rubber coating injection molding assembly extends to an air outlet of the body, and the end, penetrating through the shaft sleeve, of the rubber coating injection molding assembly is connected with an actuator through a positioning block and a transmission mechanism; the rubber coating injection molding assembly comprises a shaft rod metal framework and a valve plate metal framework, the shaft rod metal framework and the valve plate metal framework are fixedly connected to form a metal frame body, and the outer wall of the metal frame body is coated with a plastic layer. A traditional aluminum alloy structure is replaced by the rubber coating injection molding assembly, the heat conduction capacity of plastic in the rubber coating injection molding assembly is poor, heat conducted to electronic components such as a motor and a sensor can be reduced, the reliability of the electronic components is improved, the weight of parts can be reduced, and the fuel economy of an engine is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve body technical field, concretely relates to a corrosion -resistant and light EGR valve. BACKGROUND

[0002] At present, the EGR valve for the waste gas recirculation system in the market, the general main body structure adopts aluminium alloy material, and the internal transmission mechanism is composed of valve base, guide sleeve, heat shield, support ring, valve piece and valve rod, because the density is big, the heat conductivity coefficient is high, the quality is big usually, and the system temperature is easy to conduct to the actuator, leads to the actuator to appear failure problem. Meanwhile, the assembly of each component is complex, the precision requirement is high, and the process control problem and product quality problem are easy to occur.

[0003] Therefore, it is necessary to provide a corrosion -resistant and light EGR valve which can effectively reduce heat transfer to internal devices. CONTENT OF THE UTILITY MODEL

[0004] The utility model mainly aims at providing a corrosion -resistant and light EGR valve to solve the problems existing in the prior art.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A corrosion -resistant and light EGR valve, including main part, the main part inside is connected with the shaft sleeve, the shaft sleeve's axle center is connected with the rubber coating injection molding assembly, the rubber coating injection molding assembly one end penetrates the shaft sleeve, and the other end extends to the air outlet of main part, the end of rubber coating injection molding assembly penetrates the shaft sleeve and is connected with the actuator through the positioning block and transmission mechanism;

[0007] The rubber coating injection molding assembly includes shaft rod metal framework and valve piece metal framework, and the shaft rod metal framework and the valve piece metal framework are fixedly connected to form a metal frame body, and the outer wall of the metal frame body is covered with a plastic layer.

[0008] Further, the main body is an integral molding structure.

[0009] Further, a base is arranged on the main body.

[0010] Further, a seal ring groove is arranged on the end of the shaft sleeve close to the air outlet of the main body, the seal ring groove is located between the shaft sleeve and the rubber coating injection molding assembly, and a sealing ring is arranged in the seal ring groove.

[0011] Further, a scraper is arranged on the end of the shaft sleeve close to the air outlet of the main body.

[0012] Further, a heat shield is connected between the main body and the rubber coating injection molding assembly. Further, a heat shield is connected between the main body and the rubber coating injection molding assembly.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. Adopt the encapsulation injection molding assembly to replace traditional aluminum alloy structure, the plastic heat conduction ability of encapsulation injection molding assembly periphery cladding can reduce heat conduction to motor, sensor and so on electronic components, improve electronic components reliability, and can reduce the weight of parts, improve the fuel economy of engine, reduce the cost of parts.

[0015] 2. The shaft rod metal framework and the valve piece metal framework in the encapsulation injection molding assembly are coated with plastic, which ensures the overall structural strength and solves the corrosion and service life problems, so that the shaft rod will not be stuck during the cycle movement.

[0016] 3. The scraper is arranged at the shaft sleeve inlet, and when the encapsulation injection molding assembly reciprocates, the scraper can remove the dirt on the outer wall.

[0017] 4. The sealing ring is moved down to solve the problem of valve sticking caused by corrosion and improve the overall service life of the automobile. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the EGR valve of the utility model.

[0019] Figure 2 It is another schematic view of the EGR valve of the utility model.

[0020] Figure 3 It is a schematic view of the EGR valve of the utility model.

[0021] Figure 4 It is a schematic view of the encapsulation injection molding assembly of the EGR valve of the utility model.

[0022] Wherein, 1 - main body;2 - shaft sleeve;3 - positioning block;4 - transmission mechanism;5 - shaft rod metal framework;6 - valve piece metal framework;7 - plastic layer;8 - sealing ring;9 - scraper;10 - heat shield. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model is further described below through the drawings and examples. EXAMPLE

[0024] Combined Figures 1-4The utility model provides a kind of corrosion and light weight EGR valve, including main body 1, the shaft sleeve 2 is connected in the main body 1, the shaft sleeve 2's axle center is connected with rubber injection molding assembly, the rubber injection molding assembly one end penetrates the shaft sleeve 2, and the other end extends to the air outlet of main body 1, the end of the rubber injection molding assembly penetration shaft sleeve 2 is connected with actuator by locating block 3 and transmission mechanism 4, locating block 3 and transmission mechanism 4 all belong to prior art, not specific in this embodiment again.

[0025] In the embodiment, the rubber injection molding assembly replaces the traditional aluminum alloy structure, and the plastic coating of the rubber injection molding assembly has poor heat conduction capacity, which can reduce the heat conduction to electronic components such as motors and sensors by 20%, improve the reliability of electronic components, reduce the weight of parts by 15%, improve the fuel economy of the engine, and reduce the cost of parts.

[0026] The rubber injection molding assembly includes a shaft metal framework 5 and a valve piece metal framework 6, which are fixedly connected to form a metal frame body, and the outer wall of the metal frame body is coated with a plastic layer 7. The shaft and the valve piece in the rubber injection molding assembly are coated with plastic, which not only ensures the overall structural strength, but also solves the corrosion and service life problems, so that the shaft does not have the risk of jamming during the reciprocating motion, and the rubber injection molding assembly reduces the difficulty and cycle of the production process, and reduces the manufacturing cost of the product.

[0027] The main body 1 is an integral structure, which has better structural strength. The main body 1 is provided with a base for convenient connection and fixation.

[0028] The end of the shaft sleeve 2 close to the air outlet on the main body 1 is provided with a sealing ring groove, the sealing ring groove is located between the shaft sleeve 2 and the rubber injection molding assembly, and the sealing ring groove is provided with a sealing ring 8 inside. The sealing ring 8 moves downward to solve the problem of valve jamming caused by corrosion, and improve the overall service life of the automobile.

[0029] The end of the shaft sleeve 2 close to the air outlet on the main body 1 is provided with a scraper 9, which is arranged at the inlet of the shaft sleeve. When the rubber injection molding assembly reciprocates, the scraper can remove the dirt on the outer wall.

[0030] A heat shield 10 is connected between the main body 1 and the rubber injection molding assembly, which can avoid heat transfer to the shaft sleeve 2 and other electronic components.

[0031] The above is only a preferred embodiment of the utility model, and does not limit the technical scope of the utility model. Any slight modification, equivalent change and modification according to the technical essence of the utility model are still within the scope of the technical solution of the utility model.

Claims

1. An EGR valve that is resistant to corrosion and lightened in weight, characterized by, The utility model provides a kind of air valve, including main body, the shaft sleeve is connected inside the main body, the shaft sleeve's axle center is connected with rubber injection molding component, the rubber injection molding component one end penetrates the shaft sleeve, the other end extends to the air outlet of main body, the end of rubber injection molding component penetration shaft sleeve is connected with actuator by positioning block and transmission mechanism; The rubber injection molding component includes a shaft metal skeleton and a valve metal skeleton, the shaft metal skeleton and the valve metal skeleton are fixedly connected to form a metal frame body, and the outer wall of the metal frame body is covered with a plastic layer.

2. The corrosion-resistant and lightweight EGR valve according to claim 1, characterized by, The main body is an integral molding structure.

3. The corrosion resistant and light weight EGR valve as claimed in claim 1, wherein, The main body is provided with a base.

4. The corrosion resistant and light weight EGR valve as claimed in claim 1, wherein, The end of the shaft sleeve near the air outlet of the main body is provided with a sealing ring groove between the shaft sleeve and the rubber injection molding component, and a sealing ring is arranged in the sealing ring groove.

5. The corrosion resistant and light weight EGR valve as claimed in claim 1, wherein, The end of the shaft sleeve near the air outlet of the main body is provided with a scraper.

6. The corrosion resistant and light weight EGR valve of claim 1, wherein, A heat shield is connected between the main body and the rubber injection molding component.

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