CN2603209Y - Fuel-saving oil seal for valve stem guide - Google Patents

Abstract

The utility model aims to provide a fuel-saving oil seal for a valve stem guide, which can effectively reduce the oil consumption of the engines and is assembled more tightly with the guide. The utility model comprises a rubber sealed body, a framework and a sealed lip fastening device. The sealed lip of the rubber sealed body is in a corrugated structure provided with more than two acting surfaces. The sealed lip fastening device is a ring spring which can be a common spring or an opening spring coil. The fuel-saving oil seal for a valve stem guide of the utility model can effectively reduce the oil consumption of the engines, and the sealing performance and the abrasion resistance are both enhanced greatly, so the utility model can be widely used in the sealing device of the inlet and exhaust valve stem guide of the engines.

Description

New fuel-saving valve guide rod oil seal

Technical field

The utility model mainly relates to a sealing device, in particular to a sealing device on a guide rod of an engine intake and exhaust valve.

Background technique

Most of the sealing lips of the valve guide oil seal of the engine in the prior art adopt an arc-shaped contact. This single arc-shaped contact makes the oil flow relatively large when the engine is working, which reduces the fuel consumption of the engine. Relatively large, resulting in a certain waste. The material of the rubber body of the valve guide rod oil seal in the prior art is mostly made of nitrile rubber, which has good elastic deformation and is easy to process, but the performance of this material is relatively wear-resistant, high-temperature resistant, and corrosion-resistant. Poor, so the lip where the oil seal and the guide rod are in contact with each other is easily damaged, which shortens the service life of the oil seal.

Contents of Invention

The utility model aims to provide a novel fuel-saving valve guide rod oil seal which can effectively reduce the fuel consumption of the engine and is closely assembled with the guide rod.

The technical scheme of the utility model is realized as follows: it includes a rubber sealing body, a skeleton and a sealing lip tightening device, and the sealing lip on the rubber sealing body has a corrugated structure with more than two working surfaces. The sealing lip tightening device is an annular spring. The sealing lip tightening device is a split spring ring. A positioning protrusion is provided at the other end of the sealing body opposite to the sealing lip. The bottom of the skeleton is everted to form a ring for positioning. The rubber sealing body is fluorine rubber. The rubber sealing body is acrylic rubber. The rubber sealing body is nitrile rubber.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described in detail,

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of Embodiment 1 of the present utility model.

Fig. 2 is a schematic diagram of Embodiment 2 of the present utility model.

Detailed ways

The oil seal of the utility model includes a rubber sealing body, a skeleton 3 and a sealing lip tightening device 2, and the sealing lip on the rubber sealing body is a corrugated structure 1 with more than two working surfaces. The sealing lip tightening device 2 can be set as a split spring coil or a common spring coil. The other end of the sealing body opposite to the sealing lip is provided with a protrusion 4 for positioning, and the device for fixing it can also be set so that the bottom end of the skeleton is turned outward to form a ring 3 for positioning. The rubber sealing body is fluorine rubber. The rubber sealing body is acrylic rubber. The rubber sealing body is nitrile rubber. The sealing lip 1 and sealing lip tightening device 2 with corrugated structure on more than two working surfaces make the cooperation between the oil seal and the guide rod 7 more closely, and reduce the fuel consumption of the engine to a certain extent, and achieve a certain purpose of saving fuel.

Example 1:

As shown in Figure 2, when the oil seal is assembled, the sealing lip 1 of the corrugated structure on the two or more working surfaces of the oil seal is close to the guide rod 7, and the sealing lip tightening device 2 is tightly clamped on the oil seal. The spring groove on the back of the oil seal makes the sealing lip 1 of the corrugated structure of the two or more working surfaces of the oil seal more tightly matched with the guide rod 7. In places where the assembly strength is not very high, the sealing lip tightening device 2 It can be set as an ordinary spring ring; in places where the assembly strength is required to be high, the sealing lip tightening device 2 can be set as an open spring coil with a relatively large tightening force, so that the arc of the sealing lip 1 of the corrugated structure on more than two working surfaces of the oil seal Some oil can be left between the wires when in use, which reduces the oil flow during work, thereby reducing the fuel consumption of the engine, preventing excessive lubricating oil from entering the cylinder combustion chamber, thereby reducing valve carbonation, and improving engine performance. The power performance reduces the pollution of the exhaust gas to the environment and saves oil. As shown in Figure 1, the bottom of the skeleton is turned outward to form a positioning ring 3. As shown in Figure 2, during installation, a pressure plate 5 presses the positioning ring 3. This structure makes the oil seal The combination with the guide rod 7 is relatively tight, which enhances the assembly strength of the oil seal. The material of the sealing body can be selected from nitrile rubber, acrylic rubber or fluororubber according to the need of wear resistance.

Example 2

As shown in Figure 2, it is also a schematic diagram of the assembled oil seal. The sealing lip 1 of the corrugated structure on more than two working surfaces is close to the guide rod 7, and the sealing lip tightening device 2 is stuck on the spring groove on the back of the oil seal. There is an annular groove 9 on the conduit 8 inside the oil seal. The oil seal is provided with a protrusion 4 for positioning that matches the groove 9 on the conduit at the other end of the sealing body opposite to the sealing lip. This projection 4 can just be stuck in the conduit. In the groove 9, this assembly can be adapted to some places that are not suitable for using the pressure plate.

The new fuel-saving valve guide rod oil seal of the utility model effectively reduces the fuel consumption of the engine, and the sealing performance and wear resistance are greatly enhanced, and can be widely used as a sealing device on the guide rod of the intake and exhaust valves of the engine.

Claims (8)

1. A new fuel-saving valve guide rod oil seal, which includes a rubber sealing body, a skeleton and a sealing lip tightening device, characterized in that: the sealing lip on the rubber sealing body has a corrugated structure with more than two working surfaces . 2. The new oil-saving valve guide rod oil seal according to claim 2, characterized in that: said sealing lip tightening device is an annular spring. 3. The new fuel-saving valve guide rod oil seal according to claim 2, characterized in that: the sealing lip tightening device is a split spring ring. 4. The novel fuel-throttle valve guide rod oil seal according to claim 2 or 3, characterized in that a positioning protrusion is provided at the other end of the sealing body opposite to the sealing lip. 5. The novel fuel-saving valve guide rod oil seal according to claim 2 or 3, characterized in that: the bottom end of the frame is turned outward to form a circular ring for positioning. 6. The novel fuel-saving valve guide rod oil seal according to claim 1, characterized in that: the rubber sealing body is fluorine rubber. 7. The novel fuel-saving valve guide rod oil seal according to claim 1, characterized in that: said rubber sealing body is acrylic rubber. 8. The novel fuel-saving valve guide rod oil seal according to claim 1, characterized in that: said rubber sealing body is nitrile rubber.

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