CN111140315A

CN111140315A - Motor vehicle exhaust spark extinguisher and fire-retardant valve core

Info

Publication number: CN111140315A
Application number: CN202010140036.5A
Authority: CN
Inventors: 王明文
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-05-12

Abstract

The invention discloses an exhaust spark extinguisher for a motor vehicle and a fire-retardant valve core, wherein the fire-retardant valve core comprises a front piece valve core, a middle impeller and a rear piece valve core, the front piece valve core and the rear piece valve core form a cavity, the middle impeller is rotatably arranged in the cavity, gas and sparks are discharged onto the middle impeller during exhaust, the gas drives the middle impeller to rotate, in the rotating process of the middle impeller, on one hand, sparks collide with the middle impeller to extinguish the sparks, and on the other hand, the impeller drives airflow to flow and discharge. Therefore, the fire-retardant valve core has smoother air outlet, reduces the back pressure of an engine, indirectly improves the use efficiency of fuel oil, improves the permeability of tail gas emission, can ensure the extinguishing of sparks, and further improves the safety of flammable and explosive places.

Description

Motor vehicle exhaust spark extinguisher and fire-retardant valve core

Technical Field

The invention belongs to the technical field of exhaust spark extinguishment of motor vehicles, and particularly relates to an exhaust spark extinguisher and a fire-retardant valve core of a motor vehicle.

Background

At present, the motor vehicle exhaust spark arrester is applied to the tail end of an automobile exhaust pipe, sparks generated in the exhaust pipe are blocked by using a special structure in the spark arrester, so that safety guarantee is provided when a vehicle enters various occasions and regions (flammable and explosive factories, gas stations, gas filling stations, oil depots and other regions) for operation, the accident rate of fire can be effectively reduced, if the spark arrester is unqualified, serious potential safety hazards exist, and once an accident happens, the accident cannot be compensated.

Most of the existing spark extinguishers adopt a filter screen or other fixed structures to realize spark extinguishment, so that the serious air blocking phenomenon exists, and the service life of an engine is influenced to a certain extent.

Disclosure of Invention

The invention aims to provide an exhaust spark arrester of a motor vehicle and a fire-retardant valve core thereof, and solves the technical problem that the service life of an engine is shortened due to the serious air blocking phenomenon of the existing fire-retardant valve core of the spark arrester.

In order to realize the aim, the invention provides an exhaust spark arrester of a motor vehicle and a choke valve core thereof, which are realized by adopting the following technical scheme:

the utility model provides a motor vehicle exhaust spark arrester back-fire relief case, back-fire relief case includes anter case, middle impeller and the back part case of coaxial setting, anter case with the back part case forms the cavity, middle impeller rotationally set up in the cavity, anter case includes the face of admitting air, be provided with the inlet port on the face of admitting air, the back part case includes the face of bleeding, be provided with the venthole on the face of bleeding.

According to the fire retardant valve core of the motor vehicle exhaust spark arrester, the air inlet hole is formed by stamping the air inlet surface towards the cavity direction, and the air outlet hole is formed by stamping the air outlet surface towards the cavity direction.

According to the fire retardant valve core of the motor vehicle exhaust spark arrester, the stamping direction of the air inlet hole is opposite to that of the air outlet hole.

According to the fire retardant valve core of the motor vehicle exhaust spark arrester, the angle between the pressing sheet formed by punching the air inlet and the air inlet surface is 30-45 degrees; the angle between the pressing sheet formed by punching the air outlet holes and the air outlet surface is 30-45 degrees.

The fire retardant valve core of the motor vehicle exhaust spark arrester is characterized in that the middle impeller is a turbine blade.

According to the fire retardant valve core of the motor vehicle exhaust spark arrester, the middle impeller comprises a rotating shaft and a blade positioned on the rotating shaft, and the blade is positioned in the range of an included angle of 25-35 degrees with the radial surface of the rotating shaft.

According to the fire-retardant valve core of the motor vehicle exhaust spark arrester, the front valve core, the middle impeller and the rear valve core are connected through the shaft sleeve, and the shaft sleeve is made of graphene composite ceramic material.

The fire-retardant valve core of the motor vehicle exhaust spark arrester comprises a front piece valve core and a front piece valve core, wherein the front piece valve core comprises an air inlet side surface connected with the air inlet surface, and an auxiliary air inlet hole is formed in the air inlet side surface; the rear valve core comprises an air outlet side surface connected with the air outlet surface, and an auxiliary air outlet hole is formed in the air outlet side surface; the air inlet side surface is connected with the air outlet side surface.

The fire-retardant valve core of the motor vehicle exhaust spark arrester comprises an electronic tag handball, and an electronic tag for storing identity information is arranged in the electronic tag handball.

The exhaust spark arrester for the motor vehicle comprises a shell and a fire-retardant valve core positioned on an airflow channel in the shell, wherein the fire-retardant valve core is the fire-retardant valve core.

Compared with the prior art, the invention has the advantages and positive effects that: the fire-retardant valve core of the motor vehicle exhaust spark extinguisher comprises a front piece valve core, a middle impeller and a rear piece valve core, wherein the front piece valve core and the rear piece valve core form a cavity, the middle impeller is rotatably arranged in the cavity, gas and sparks are discharged onto the middle impeller when exhausting, the gas drives the middle impeller to rotate, and in the rotating process of the middle impeller, on one hand, sparks collide on the middle impeller to extinguish the sparks, and on the other hand, the impeller drives airflow to flow and discharge.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

FIG. 1 is a schematic view of a fire stop valve cartridge according to an embodiment of the present invention.

Fig. 2 is an exploded view of a fire stop valve cartridge according to an embodiment of the present invention.

FIG. 3 is a schematic view of a front panel valve cartridge according to an embodiment of the present invention.

FIG. 4 is a schematic view of a rear plate valve cartridge according to an embodiment of the present invention.

Figure 5 is a schematic view of an intermediate impeller in an embodiment of the invention.

Fig. 6 is a schematic view of an automotive exhaust spark arrestor in accordance with an embodiment of the invention.

Fig. 7 is a left side view of fig. 6.

Fig. 8 is a sectional view taken along line a-a of fig. 6.

In the figure: 1. A fire retardant valve core; 101. a front piece valve core; 1011. an air inlet surface; 1012. an air inlet; 1013. tabletting; 1014. an air intake side; 1015. an auxiliary air intake; 102. a middle impeller; 1021. a rotating shaft; 1022. a blade; 103. a rear valve element; 1031. a gas outlet surface; 1032. an air outlet; 1033. tabletting; 1034. an air outlet side surface; 1035. an auxiliary air outlet; 104. a first bushing; 1041. a portion assembled with the valve element; 1042. the part assembled with the middle impeller; 1043. a limiting part; 105. a second shaft sleeve; 1051. a portion assembled with the valve element; 1052. the part assembled with the middle impeller; 1053. a limiting part; 106. an electronic tag handball; 2. a housing.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1-5, the present embodiment provides a fire-retardant valve core 1 of an exhaust spark arrester of a motor vehicle, wherein the fire-retardant valve core 1 comprises a front valve core 101, a middle impeller 102 and a rear valve core 103 which are coaxially arranged. The front-piece valve core 101 and the rear-piece valve core 103 are connected to form a cavity, and the middle impeller 102 is rotatably arranged in the cavity.

Wherein, the front valve core 101, the middle impeller 102 and the rear valve core 103 are connected through a shaft sleeve.

Specifically, for the convenience of installation, the shaft sleeve includes a first shaft sleeve 104 and a second shaft sleeve 105 which are connected, the first shaft sleeve 104 and the second shaft sleeve 105 are connected and fixed through a fixing member, and the fixing member may be a bolt or the like.

The first shaft sleeve 104 comprises a limiting part 1043, a part 1041 assembled with the valve core and a part 1042 assembled with the middle impeller, wherein the diameter of the limiting part 1043 is larger than that of the part 1041 assembled with the valve core and that of the part 1042 assembled with the middle impeller, and steps are formed among the limiting part 1043, the part 1041 assembled with the valve core and the part 1042 assembled with the middle impeller.

The second bushing 105 includes a position 1053, a position 1051 assembled with the valve core, and a position 1052 assembled with the middle impeller, the diameter of the position 1053 is larger than that of the position 1051 assembled with the valve core and that of the position 1052 assembled with the middle impeller, and the three form a step.

The portion 1042 of the first hub 104 to which the intermediate impeller is fitted meets the portion 1052 of the second hub 105 to which the intermediate impeller is fitted. The outer diameters of the portions 1042 and 1052 assembled with the intermediate impeller are matched with the inner diameter of the rotating shaft of the intermediate impeller 102, and the outer diameters of the

portions

1041 and 1051 assembled with the valve core are larger than the inner diameter of the rotating shaft 1021, so that the

portions

1041 and 1051 assembled with the valve core limit the rotating shaft 1021 at the portions 1042 and 1052 assembled with the intermediate impeller, and the stability of the rotation of the intermediate impeller 102 is ensured. The

stopper portions

1043 and 1053 fix the positions of the front-piece spool 101 and the rear-piece spool 103.

The shaft sleeve is cast by a graphene composite ceramic material, works stably at 300 ℃, has excellent high-temperature resistance and good wear resistance, has a lubricating effect, and can rotate in the middle of the middle impeller 102 for a long time.

The front sheet valve body 101 includes an air intake surface 1011, and an air intake hole 1012 is provided on the air intake surface 1011.

Preferably, the air inlet holes 1012 are punched on the air inlet surface 1011 toward the cavity. The opening direction of the intake holes 1012 is formed not parallel to the intake surface 1011. Preferably, the opening direction is perpendicular to the air intake surface 1011.

The angle between the pressing sheet 1013 formed by punching the air inlet 1012 and the air inlet surface 1011 is 30-45 degrees, which can meet the exhaust volume of the tail pipe with different calibers.

The rear plate valve core 103 includes an air outlet surface 1031, and an air outlet hole 1032 is provided on the air outlet surface 1031.

Preferably, the air outlet hole 1032 is formed by punching the air outlet surface 1031 toward the cavity. The opening direction of the air outlet hole 1032 is formed not to be parallel to the air outlet surface 1031. Preferably, the opening direction is perpendicular to the gas outlet surface 1031.

The angle between the pressing sheet 1033 formed by punching the air outlet hole 1032 and the air outlet surface 1031 is 30-45 degrees, so that the exhaust volume of the tail pipes with different calibers can be met.

The punching direction of the intake holes 1012 is opposite to that of the outlet holes 1032. That is, the air inlet direction of the air inlet hole 1012 is clockwise, and the air outlet direction of the air outlet hole 1032 is counterclockwise; alternatively, if the air inlet direction of the inlet hole 1012 is counterclockwise, the air outlet direction of the outlet hole 1032 is clockwise.

Preferably, the projections of the inlet port 1012 and the outlet port 1032 in the direction of the middle impeller 102 fall on the middle impeller 102.

The air inlet holes 1012 and the air outlet holes 1032 are arranged in a mode that sparks can be fully contacted with the front sheet valve core 101, the middle impeller 102 and the rear sheet valve core 103 to be extinguished, sparks can be prevented from entering from the air inlet holes 1012 and then being directly discharged from the air outlet holes 1032, and the extinguishing rate of sparks is improved.

Front sheet valve core 101 includes air intake side surface 1014 contacting air intake surface 1011, air intake side surface 1014 is a tapered surface, and auxiliary air intake hole 1015 is formed in air intake side surface 1014. The rear valve spool 103 includes a gas outlet side 1034 connected to the gas outlet surface 1031, and an auxiliary gas outlet hole 1035 is formed in the gas outlet side 1034. The inlet side 1014 and the outlet side 1034 are connected.

Preferably, the projection of the auxiliary air inlet hole 1015 and the auxiliary air outlet hole 1035 in the direction of the middle impeller 102 falls on the middle impeller 102.

The auxiliary gas inlet holes 1015 and the auxiliary gas outlet holes 1035 can improve the gas circulation, on one hand, the gas entering from the auxiliary gas inlet holes 1015 improves the rotating speed of the middle impeller 102, and on the other hand, sparks can directly impact on the blades of the rotating middle impeller 102 to be extinguished.

The middle impeller 102 includes a shaft 1021 and blades 1022 located on the shaft 1021. The blades 1022 are turbine blades, and the blades 1022 are located within an included angle range of 25 ° to 35 ° with the radial surface of the rotating shaft 1021.

Preferably, projections of the blades 1022 in a direction of a radial surface of the rotation shaft 1021 meet or overlap.

The turbine type blade can rotate rapidly under the action of air flow, and is in contact with sparks to extinguish the sparks. This embodiment adopts turbine formula blade to carry out the back-fire relief, can not only effectively prevent extinguishing of spark and can also promote exhaust efficiency.

The fire-retardant valve core of this embodiment includes electronic tags handball 106, is provided with the electronic tags who stores identity information in the electronic tags handball 106. The electronic tag handball 106 connecting rod is welded between the front valve core 101 and the rear valve core 102. The identity information includes: information of production units, fireproof performance parameters and/or product validity periods and the like.

As shown in fig. 6 to 8, this embodiment also proposes an exhaust spark arrester for a motor vehicle. The spark arrester is installed and fixed at the tail end of the exhaust pipe, connected by a clamp and locked by a bolt. The spark arrester comprises a shell 2 and a fire-retardant valve core 1 positioned on an air flow passage in the shell 2. The housing 2 is provided with an air hole.

The fire-retardant valve core 1 is the fire-retardant valve core 1, the fire-retardant valve core 1 covers the air flow channel, and air flow in the air flow channel passes through the fire-retardant valve core 1.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. The utility model provides a motor vehicle exhaust spark arrester back-fire relief case, its characterized in that, back-fire relief case includes anter case, middle impeller and the back part case of coaxial setting, anter case with the back part case forms the cavity, middle impeller rotationally set up in the cavity, anter case includes the air inlet face, be provided with the inlet port on the air inlet face, the back part case includes the face of giving vent to anger, be provided with the venthole on the face of giving vent to anger.

2. The fire retardant valve core of the automotive exhaust spark arrester as claimed in claim 1, wherein the air inlet hole is formed by punching the air inlet face towards the cavity, and the air outlet hole is formed by punching the air outlet face towards the cavity.

3. The automotive exhaust spark arrester flame trap of claim 2 wherein the inlet apertures are punched in a direction opposite to the outlet apertures.

4. The automotive exhaust spark arrester flame trap valve cartridge of claim 2 wherein the angle between the air intake aperture stamped and formed pressure plate and the air intake face is between 30 ° and 45 °; the angle between the pressing sheet formed by punching the air outlet holes and the air outlet surface is 30-45 degrees.

5. The automotive exhaust spark arrester flame trap valve cartridge of claim 1 wherein the intermediate impeller is a turbine blade.

6. The automotive exhaust spark arrester flame trap valve cartridge of claim 5 wherein the intermediate impeller includes a shaft and a vane on the shaft, the vane being positioned at an angle in the range of 25 ° to 35 ° from the radial plane of the shaft.

7. The fire retardant valve core of the automotive exhaust spark arrester of claim 1, wherein the front valve core, the middle impeller and the rear valve core are connected through a shaft sleeve, and the shaft sleeve is made of graphene composite ceramic material.

8. The automotive exhaust spark arrester flame trap valve cartridge of claim 1 wherein the front piece valve cartridge includes an air intake side surface interfacing with the air intake surface, the air intake side surface having an auxiliary air intake aperture formed therein; the rear valve core comprises an air outlet side surface connected with the air outlet surface, and an auxiliary air outlet hole is formed in the air outlet side surface; the air inlet side surface is connected with the air outlet side surface.

9. The fire retardant valve core of the automotive exhaust spark arrester of claim 1, wherein the fire retardant valve core comprises an electronic tag handball, and an electronic tag storing identity information is arranged in the electronic tag handball.

10. An exhaust spark arrester for a motor vehicle, comprising a housing and a fire-retardant valve core positioned in an airflow passage in the housing, wherein the fire-retardant valve core is as claimed in any one of claims 1 to 9.