A two-stage flame arrester

Abstract

The utility model discloses a double -segment type star extinguisher, specifically related to the technical field of star extinguisher, including the jar body, the one end fixedly connected with the air inlet pipe of jar body, the other end fixedly connected with the air outlet pipe of jar body, the inside of jar body is provided with double -segment shunt mechanism, double -segment shunt mechanism includes two baffle no.

Description

Technical Field

[0001] This utility model relates to the field of spark extinguisher technology, and more specifically, to a two-stage spark extinguisher. Background Technology

[0002] The main types of spark arresters for engine exhaust pipes are as follows: labyrinth type, water bath type, grid type, stacked type and combination type. The raw material of the spark arrester is to form an extinguishing chamber on the inner wall of the arrester. When a spark enters the extinguishing chamber, it will automatically extinguish itself when the temperature or oxygen is insufficient, and then exhaust gas without sparks will be discharged from the exhaust pipe.

[0003] Existing spark arresters for explosion-proof diesel engines have inadequate protection for the exhaust pipe. When the spark arrester is not in use, dust and impurities can easily enter the exhaust pipe, affecting its normal operation, causing significant economic losses to users, and making it unsuitable for long-term use.

[0004] A search revealed a Chinese patent with publication number CN217233624U that discloses an explosion-proof diesel engine spark arrester. This utility model protects the exhaust pipe with a cover plate to prevent dust and impurities from entering. A fixing mechanism limits the cover plate when the main body of the arrester is not in use, preventing accidental opening and unnecessary economic losses.

[0005] However, in actual use, when the spark extinguisher enters the spark extinguisher, some of the sparks in the flue gas are discharged directly from the outlet before they are completely extinguished due to the high flow rate of the flue gas, which affects the extinguishing effect of the sparks in the flue gas. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a two-stage spark extinguisher to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A two-stage spark arrester includes a canister. An air inlet pipe is fixedly connected to one end of the canister, and an air outlet pipe is fixedly connected to the other end. A two-stage flow diversion mechanism is provided inside the canister. The two-stage flow diversion mechanism includes two partitions, a first partition and a second partition, which are staggered and arranged inside the canister. The outer sides of the first and second partitions are fixedly connected to the inner wall of the canister. Through holes are provided on the inner sides of both the first and second partitions. One side of the inner side of the first partition is fixedly connected to… A positioning tube is connected to the inner through hole of the first partition. The inner side of the positioning tube has multiple air outlets for diverting waste gas. The air outlets are arranged in a ring array on the inner side of the positioning tube. An inclined surface is provided on one side of each air outlet. Multiple flow guides are fixedly connected to the outer side of the positioning tube. The inner diameter of the through hole of the first partition is smaller than the inner diameter of the through hole of the second partition. The air inlet pipe and the air outlet pipe are symmetrically distributed at both ends of the tank. An auxiliary flow guide mechanism is provided on the inner side of the second partition.

[0009] By adopting the above technical solution, multiple guide shrouds and inclined surfaces on the inner side of the two positioning tubes will guide the exhaust gas, causing the exhaust gas to spiral outward and disperse, thus reducing the flow speed of the exhaust gas.

[0010] As a further description of the above technical solution: the auxiliary flow guiding mechanism includes a fixed ring, the outer side of which is fixedly connected to the inner side of the partition plate, and two supports are fixedly connected to the inner side of the fixed ring. The supports are symmetrically arranged inside the fixed ring, and a positioning shaft is provided between the two fixed rings. A turntable is rotatably connected to the outer side of the positioning shaft, and multiple baffles are fixedly connected to the outer side of the turntable. The baffles are inclinedly arranged outside the turntable, and the multiple baffles are distributed in a ring array outside the turntable. Multiple flow guiding grooves are opened on one side of the baffles, and the cross-section of the flow guiding grooves is trapezoidal.

[0011] By adopting the above technical solution, the exhaust gas is gathered and guided by the guide channel, causing multiple baffles and turntables to rotate with the flow of exhaust gas, thereby colliding with the sparks in the exhaust gas and preventing the sparks from being discharged with the flow of exhaust gas.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. By setting up a dual-stage diversion mechanism, compared with the existing technology, the exhaust gas can be decelerated and spirally diverted by using a dual-positioning tube combined with multiple ring-shaped guide hoods, thereby effectively reducing the flow speed of the exhaust gas, extending the retention time of sparks in the spark extinguisher, and improving the extinguishing efficiency of sparks in the exhaust gas.

[0014] 2. By setting up an auxiliary flow guiding mechanism, compared with the existing technology, the use of a turntable and baffle that can rotate with the airflow, together with the flow guiding channel, will cause the sparks to collide with multiple rotating baffles, increasing the contact rate between the sparks and the baffle surface, and further improving the spark collision extinguishing effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a partial schematic diagram of the connection between the tank body and the partition of this utility model.

[0017] Figure 3 This is a partial schematic diagram of the connection between the partition and the positioning tube of this utility model.

[0018] Figure 4 This is a partial schematic diagram of the connection between the fixing ring and the bracket of this utility model.

[0019] Figure 5 This is a partial schematic diagram of the connection between the turntable and the baffle of this utility model.

[0020] Figure 6 For the present utility model Figure 3 Enlarged diagram of A in the middle.

[0021] Figure 7 For the present utility model Figure 5 Enlarged diagram of B in the middle.

[0022] The attached diagram is labeled as follows: 1. Tank body; 2. Inlet pipe; 3. Outlet pipe; 4. Partition 1; 5. Partition 2; 7. Positioning pipe; 9. Outlet hole; 10. Flow guide; 11. Inclined surface; 12. Fixing ring; 13. Bracket; 14. Positioning shaft; 15. Turntable; 16. Baffle; 17. Flow guide groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The embodiments disclosed in this application are as follows: Figures 1-7The illustrated dual-stage spark arrester includes a tank 1, with an inlet pipe 2 fixedly connected to one end and an outlet pipe 3 fixedly connected to the other end. A dual-stage diversion mechanism is provided inside the tank 1. This mechanism includes two partitions, a first partition 4 and a second partition 5, which are staggered and arranged inside the tank 1. The outer sides of the partitions are fixedly connected to the inner wall of the tank 1. Through holes are provided inside both partitions. A positioning tube 7 is fixedly connected to one side of the inner side of partition 4, with one end of the positioning tube 7 communicating with the through hole inside partition 4. Multiple exhaust holes 9 for diverting waste gas are provided on the inner side of the positioning tube 7. The exhaust holes 9 are arranged in a ring array on the inner side of the positioning tube 7. An inclined surface 11 is provided on one side of the exhaust hole 9. Multiple flow guides 10 are fixedly connected to the outer side of the positioning tube 7. The inner diameter of the through hole of the first partition 4 is smaller than the inner diameter of the through hole of the second partition 5. The inlet pipe 2 and the outlet pipe 3 are symmetrically distributed at both ends of the tank body 1. An auxiliary flow guide mechanism is provided on the inner side of the second partition 5. The double positioning tube 7 combined with the multiple ring array flow guides 10 are used to divert the flow of waste gas and guide it in a spiral, so as to effectively reduce the flow speed of waste gas.

[0025] Reference Figure 1 , Figure 4 and Figure 5 As shown, the auxiliary flow guiding mechanism includes a fixed ring 12. The outer side of the fixed ring 12 is fixedly connected to the inner side of the partition 5. Two supports 13 are fixedly connected to the inner side of the fixed ring 12. The supports 13 are symmetrically arranged inside the fixed ring 12. A positioning shaft 14 is arranged between the two fixed rings 12. A turntable 15 is rotatably connected to the outer side of the positioning shaft 14. Multiple baffles 16 are fixedly connected to the outer side of the turntable 15. The baffles 16 are inclinedly arranged outside the turntable 15, and the multiple baffles 16 are arranged in a ring array outside the turntable 15. Multiple flow guiding grooves 17 are opened on one side of the baffles 16. The cross-section of the flow guiding grooves 17 is trapezoidal. The flow guiding grooves 17 arranged in trapezoidal shape on the surface of the baffles 16 can be used to gather and guide the flow of exhaust gas, thereby forming a continuous driving force on the baffles 16, so that the baffles 16 and the turntable 15 can rotate continuously, increasing the probability of contact and collision between the sparks and the baffles 16.

[0026] The working principle of this utility model is as follows: When using the spark extinguisher to extinguish the sparks in the exhaust gas, the exhaust gas flows into the inner side of the tank 1 through the inlet pipe 2. Then, the exhaust gas enters the corresponding first positioning pipe 7 through the through hole on the inner side of the partition 4 on one side. The exhaust gas flows outward through multiple outlet holes 9. At the same time, the inclined surface 11 and the guide shroud 10 guide the output exhaust gas, allowing it to flow in a spiral diffusion state between the partition 4 and the partition 5, thus reducing the flow speed of the exhaust gas. Simultaneously, the sparks in the exhaust gas are gradually extinguished due to insufficient oxygen and collisions with the tank 1, partition 4, partition 5, and positioning pipe 7. Then, the gradually flowing exhaust gas passes through the fixing ring 12 on the inner side of the partition 5 on one side. At the same time, the flowing gas exerts a thrust on the multiple baffles 16 on the outer side of the rotating disk 15, thereby causing the rotating disk 15 to rotate under the push of the multiple baffles 16 and the support of the two supports 13 and the positioning shaft 14, as shown in the attached figure. Figure 1 and attached Figure 5 As shown, the multiple trapezoidal guide grooves 17 provided on the surface of the baffle 16 will gather and divert the passing gas. Since the turntable 15 and the positioning shaft 14 are rotatable, the turntable 15 and the baffle 16 can continue to rotate under the push of the airflow, thereby increasing the probability of the Martian contacting the surface of the baffle 16.

[0027] After the exhaust gas is initially decelerated and cooled by the positioning tube 7, turntable 15 and baffle 16 on one side, it will repeat the above steps again for the baffle 4, positioning tube 7, turntable 15 and baffle 16 on the other side, to perform secondary deceleration and cooling, so that the sparks in the exhaust gas are fully extinguished, and then the exhaust gas is discharged through the exhaust pipe 3.

[0028] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A two-stage spark arrester, comprising a tank (1), characterized in that: One end of the tank (1) is fixedly connected to an air inlet pipe (2), and the other end of the tank (1) is fixedly connected to an air outlet pipe (3). A dual-section diversion mechanism is provided inside the tank (1). The dual-stage diversion mechanism includes two partitions, one (4) and two (5). The two partitions, one (4) and two (5), are arranged alternately on the inner side of the tank (1). The outer sides of the partitions, one (4) and two (5) are fixedly connected to the inner wall of the tank (1). The inner sides of the partitions, one (4) and two (5) are provided with through holes. A positioning tube (7) is fixedly connected to one side of the inner side of the partition, one end of the positioning tube (7) is connected to the through hole on the inner side of the partition, and multiple exhaust holes (9) for diverting waste gas are opened on the inner side of the positioning tube (7). The exhaust holes (9) are arranged in a ring array on the inner side of the positioning tube (7). An auxiliary flow guiding mechanism is provided on the inner side of the second partition (5).

2. The dual-stage spark arrester according to claim 1, characterized in that: An inclined surface (11) is provided on one side of the air outlet (9), and multiple flow guides (10) are fixedly connected to the outside of the positioning tube (7).

3. The dual-stage spark arrester according to claim 1, characterized in that: The inner diameter of the through hole of the first partition (4) is smaller than the inner diameter of the through hole of the second partition (5), and the air inlet pipe (2) and the air outlet pipe (3) are symmetrically distributed at both ends of the tank (1).

4. The dual-stage spark arrester according to claim 1, characterized in that: The auxiliary flow guiding mechanism includes a fixed ring (12), the outer side of which is fixedly connected to the inner side of the partition plate (5), and the inner side of the fixed ring (12) is fixedly connected to two brackets (13).

5. The dual-stage spark arrester according to claim 4, characterized in that: The bracket (13) is symmetrically arranged inside the fixing ring (12), and a positioning shaft (14) is provided between the two fixing rings (12).

6. The dual-stage spark arrester according to claim 5, characterized in that: The positioning shaft (14) is rotatably connected to a turntable (15), and a plurality of baffles (16) are fixedly connected to the outside of the turntable (15). The baffles (16) are inclinedly arranged on the outside of the turntable (15), and the plurality of baffles (16) are arranged in a ring array on the outside of the turntable (15).

7. The dual-stage spark arrester according to claim 6, characterized in that: The baffle (16) has multiple guide grooves (17) on one side, and the cross section of the guide grooves (17) is trapezoidal.

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