CN102852601A - Flame arrester for motor vehicle - Google Patents

Abstract

The invention relates to a motor vehicle flame arrester, comprising a fire arrester (8), a fire arrester connection cylinder (7) fixedly connected to the entrance of the fire arrester (8), and a fire arrester connection cylinder (7) fixed The clamping device to the motor vehicle exhaust pipe (1) is characterized in that it also includes a ring sleeve (2) and more than 12 strip-shaped elastic sealing sheets (3); the ring sleeve (2) can be Put it on the motor vehicle exhaust pipe (1), the ring sleeve (2) and the fire arrester connecting cylinder (7) are connected by threads; the elastic sealing sheets (3) are overlapped in turn and evenly distributed on the ring sleeve In the inner ring of (2), one end of the elastic sealing piece (3) is fixed on the ring sleeve (2), and the other end is a free end obliquely pointing to the shaft. The free end can be tightly attached to the motor vehicle exhaust pipe ( 1) on. The flame arrester with this interface is suitable for motor vehicles entering and exiting areas with fire and explosion-proof requirements, and is suitable for different motor vehicles, and is easy to operate.

Description

Motor Vehicle Flame Arrester

technical field

The invention relates to a motor vehicle flame arrester, in particular to a flame arrester capable of adapting to different exhaust pipe diameters.

Background technique:

When a motor vehicle enters an inflammable and explosive area, in order to prevent fire, it is necessary to install a flame arrester on the exhaust pipe. The usual practice is to select different types of flame arresters according to different motor vehicle exhaust pipe calibers. It is not economical to be equipped with flame arresters with various interface diameters, and the management and operation are also inconvenient. Chinese patent ZL200920066667.6 discloses an adjustable automobile fire shield. This adjustable automobile fire shield can fix the fire shield on exhaust pipes with different pipe diameters by adjusting the bolt clamp. This method solves the problem of not being able to adapt to different pipe diameters, but there is still a potential safety hazard because the interface is not sealed and sparks may emerge from the interface. In addition, since the exhaust pipe of an automobile is located under the vehicle body, especially for a truck, it is inconvenient for the installer to drill into the bottom of the vehicle for installation, and the installer is easily burned by the exhaust pipe.

Invention content:

The motor vehicle flame arrester of the invention overcomes the defect that the interface of the existing flame arrester is sealed but not adjustable, or adjustable but not sealed, and achieves the effect that the flame arrester can be sealed and adjusted, and at the same time is convenient for installation.

A motor vehicle flame arrester, comprising a fire arrester, a fire arrester connection cylinder fixedly connected to the entrance of the fire arrester, and a clamping device for fixing the fire arrester connection cylinder to the motor vehicle exhaust pipe, characterized in that: It includes a ring sleeve and more than 12 strip-shaped elastic sealing sheets; the ring sleeve can be inserted into the exhaust pipe of a motor vehicle, and the ring sleeve is connected with the connecting cylinder of the fire arresting body through threads; the elastic sealing sheets are overlapped in sequence And evenly distributed on the inner ring of the ring sleeve, one end of the elastic sealing piece is fixed on the ring sleeve, the other end is a free end obliquely pointing to the shaft, and the free end can be closely attached to the exhaust pipe of the motor vehicle through its own elastic force . In this way, the flame arrester with the same interface is connected to the exhaust pipe with different diameters, and a better flame arresting effect can also be obtained.

In order to strengthen the elasticity of the elastic sealing sheet and enhance the sealing reliability, an annular tension spring is arranged on the outer side of the elastic sealing sheet.

Increasing the number of elastic sealing sheets, such as 24 or 36, can improve the sealing effect.

The clamping device for fixing the flame arrester to the exhaust pipe of the motor vehicle includes a symmetrically arranged clamp hoop, a guide rod and a round clip with a handle; the hinge of the round clip is fixed on the connecting cylinder of the fire arrester, and One side of the end of the mouth clamp handle is provided with a bolt, and the other side is correspondingly opened with a hole; one end of the guide rod is radially connected to the round mouth clamp, and the other end freely passes through the connecting cylinder of the fire arrester and is fixed with the clamp hoop.

In order to facilitate installation and disassembly, according to the different installation positions of the exhaust pipe of the motor vehicle, the connecting cylinder of the fire arrester is made into a U-shape. 1.5m. Like this, can not drill into the inside of the bottom of the car for installation and disassembly for some trucks.

Description of drawings

Fig. 1 is a schematic diagram of the connection structure of the motor vehicle flame arrester of the present invention.

Fig. 2 is a cross-sectional view of an embodiment of a collar with an annular tension spring and an elastic sealing sheet.

Fig. 3 is a schematic diagram of an embodiment in which the clamping device is a round clip and the elastic sealing sheets are 12 pieces.

Fig. 4 is a schematic diagram of an embodiment in which the connecting cylinder of the fire arresting body is U-shaped.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1: a motor vehicle flame arrester, including a fire arrester 8, a fire arrester connecting cylinder 7 fixedly connected to the entrance of the fire arrester 8, and fixing the fire arrester connecting cylinder 7 to the motor vehicle exhaust pipe 1 on the clamping device. It is characterized in that it also includes a ring sleeve 2 and more than 12 strip-shaped elastic sealing sheets 3; the ring sleeve 2 can be inserted into the motor vehicle exhaust pipe 1, and the ring sleeve 2 and the connecting cylinder 7 of the fire arresting body pass through Threaded connection; the elastic sealing sheet 3 is sequentially overlapped and evenly distributed on the inner ring of the ring sleeve 2, one end of the elastic sealing sheet 3 is fixed on the ring sleeve 2, and the other end is a free end obliquely pointing to the shaft. The free end is closely attached to the motor vehicle exhaust pipe 1 by its own elastic force.

During installation, the flame arrester of the present invention is directly inserted into the motor vehicle exhaust pipe 1 for a certain length. When the exhaust pipe 1 with different pipe diameters is connected, the clamp 6 is moved by adjusting the screw 5 to clamp the flame arrester on the exhaust pipe 1 . The free end of the elastic sealing sheet is attached to the outer surface of the exhaust pipe 1 to prevent sparks discharged from the engine from flying out of the interface.

In order to strengthen the elasticity of the elastic sealing sheet and enhance the sealing reliability, an annular tension spring 4 is provided outside the elastic sealing sheet 3 (as shown in FIG. 2 ).

As shown in FIG. 3 , the clamping device includes: two symmetrically arranged clamp hoops 6 and guide rods 12 , and a round clamp 11 with a handle. The hinge 10 of the round mouth clamp 11 is fixed on the fire arresting body connecting cylinder 7, and the end of the round mouth clamp handle 13 is provided with a bolt 15 on one side and a hole 14 on the other side. One end of the guide rod 12 is radially connected to the round clamp 11 and the other end freely passes through the fire arresting body connecting cylinder 7 and fixes the clamp 6 . When in use, open the handle of the round mouth clip, put the ring sleeve 2 and the fire arrester connecting tube 7 into the appropriate position of the exhaust pipe 1 of the motor vehicle, close the handle 13, and the bolt 15 passes through the hole 14, and tightens it with a nut. The flame arrester can be fixed on the motor vehicle.

As shown in Figure 4. For ease of installation, according to the different installation positions of the motor vehicle exhaust pipe, the fire arrester connecting cylinder 7 is made into a U-shape, wherein the length of the middle section of the U-shape is 1.5m. Round mouth folder handle 13 lengths are also correspondingly 1.5m. Like this, can not drill into the inside of the bottom of the car for installation and disassembly for some trucks.

Claims (4)

1. motor vehicle flame arrester, comprise back-fire relief body (8), with the affixed back-fire relief body connecting cylinder (7) of back-fire relief body (8) entrance, described back-fire relief body connecting cylinder (7) is fixed to clamp device on the motor vehicle exhaust (1), it is characterized in that: also comprise a ring set (2) and the long strip elastic sealing strip (3) more than 12; Described ring set (2) can be inserted on the motor vehicle exhaust (1), and ring set (2) is threaded connection with back-fire relief body connecting cylinder (7); Described elastic sealing strip (3) overlaps successively and uniform ring is distributed in the inner ring of described ring set (2), elastic sealing strip (3) one ends are fixed on the described ring set (2), the other end is the free end that tiltedly points to axle, and free end is close on the motor vehicle exhaust (1) by self spring energy.

2. motor vehicle flame arrester according to claim 1 is characterized in that: be provided with annular extension spring (4) in described elastic sealing strip (3) outside.

3. motor vehicle flame arrester according to claim 1 and 2 is characterized in that: described clamp device comprises the clamp (6) that is arranged symmetrically with, guide rod (12) and with the round mouth folder (11) of handle; The hinge (10) of described round mouth folder (11) is fixed on the described back-fire relief body connecting cylinder (7), and round mouth tong handle (13) is Yi Bian end is provided with bolt (15), the another side correspondence has hole (14); Described guide rod (12) one ends are connected to radially that round mouth folder (11) is upper and the other end passes freely through back-fire relief body connecting cylinder (7) and be fixed with described clamp (6).

4. motor vehicle flame arrester according to claim 3 is characterized in that: described back-fire relief body connecting cylinder (7) is U-shaped shape, and described U-shaped two ends distance is 0.5～1.5m, and described round mouth tong handle (13) length is 0.5～1.5m.

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