CN201265445Y - Exhaustion interface pad - Google Patents

Abstract

The utility model relates to a seal gasket, in particular to an engine exhaust interface gasket. The purpose of the utility model is to adopt a mode that external threads are screwed and pressed to realize the seal of a gas exhaust pipe, i.e. the paper metallic state is changed into a simplified interface structure in interference fit, a conical seal bush is adopted, and the seal performance of an exhaust system is effectively improved accordingly. The engine exhaust interface gasket is a cone in the shape of a conical tube, the lateral surface of an opening in the shape of a conical tube is provided with a grip nut which is screwed outside the interface of an exhaust manifold, and the conical opening is sleeved on the exhaust pipe and is inserted in the interface of the exhaust manifold. The utility model has the advantages of firm installation, difficult deformation, good heat dissipation effect and good seal effect. After the mode is adopted, the service life of the exhaust interface gasket is prolonged.

Description

The exhaust port pad

Technical field

The utility model relates to sealing gasket, particularly relate to the engine exhaust interface pad.

Background technique

Medium, temperature, pressure and working condition all are the key factors of decision sealing effect.For example little in working pressure, use the plastics flange butt joint (under the situation of PN＜6kg), select Sealing for use than hard ground, as F4 or metallic material, will leak because of material selection is improper, if and use graphite material instead, will obtain effect preferably because of the special efficacy of flexibility, vice versa.For another example, under the working environment of chemical mediator, just must can reach good effect by the different sealing medium of rational Match, otherwise the chemical change that can not expect of generation very easily.For the engine exhaust jointing is sealed, automobile all adopts flange to connect the configuration state that adds sealing gasket all the time, sealing gasket uses the metallic cover pad to adopt expanded graphite, no asbestos slate, ceramic fiber etc. as packing, the sheetmetal of various materials such as stainless steel outer packed, galvanized iron, red copper forms high temperature high pressure sealing positions such as particularly suitable heat exchanger, pressurized container.It has the suburb to prevent the erosion of the falling apart of pad, medium, has also improved withstand voltage simultaneously.Present homemade waste pipe interface liner all adopts the cooper-asbestos liner.This liner is owing to being very thin layer of metal book plate externally, so intensity is not high; And because the special construction of sealed groove, and delivery temperature is higher, and area of contact is little when mounted owing to this sealed interface pad, and often because of the exhaust pipe flange temperature distortion is washed out, and causes to twist and be out of shape inhomogeneously, influences sealing effect.

The model utility content

For solving the problems of the technologies described above, the form that wooden model utility purpose is to adopt a kind of outside thread to tighten and is pressed into realizes the gas exhaust piping sealing, simplifies the interference fit interface structure, adopts the cone seal lining, makes the sealability of vent systems effectively improve.

Technological points of the present utility model is, a kind of engine exhaust interface pad is Taper Pipe shape cone, and described Taper Pipe shape open side is provided with and tightens nut, tightens nut and is spun on outside the discharge manifold interface; The awl muzzle injects in the discharge manifold on outlet pipe.

Described Taper Pipe shape cone one end is provided with to tighten screw thread in the nut.

Described Taper Pipe shape cone adopts latticed.

Described Taper Pipe shape cone adopts papery metallic cover material made.

After adopting exhaust port pad of the present utility model, fastening during installation, be difficult for torsional deformation, face and good heat dissipation effect, sealing effect is good, adopts the long service life that makes the exhaust port pad after this mode.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described further

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

Embodiment

Technological points of the present utility model is, a kind of engine exhaust interface pad is Taper Pipe shape cone 3, and described Taper Pipe shape open side is provided with and tightens nut 2, tightens nut 2 and is spun on outside the discharge manifold interface 1; The awl muzzle injects in the discharge manifold interface 1 on outlet pipe 4.

Described Taper Pipe shape one end is provided with to tighten screw thread 5 in the nut 2.

Described Taper Pipe shape cone 3 adopts latticed.

Described Taper Pipe shape cone adopts papery metallic cover material made.

As shown in Figure 1, when using gasket seal of the present utility model, earlier jointing is outwarded winding, will seal cone tube and be enclosed within on the discharge manifold in the insertion discharge manifold interface, screw and contract nut on the outer screw thread of discharge manifold interface, screw at last.

Claims (3)

1, a kind of engine exhaust interface pad is Taper Pipe shape cone (3), and described Taper Pipe shape open side is provided with and tightens nut (2), tightens nut (2) and is spun on outside the discharge manifold interface (1); The awl muzzle injects in the discharge manifold interface (1) on outlet pipe 4.

2, engine exhaust interface pad according to claim 1 is characterized in that, described Taper Pipe shape one end is provided with to tighten screw thread (5) in the nut (2).

3, engine exhaust interface pad according to claim 1 and 2 is characterized in that, described Taper Pipe shape cone (3) adopts latticed.

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