CN217813691U

CN217813691U - Backpack fire pump

Info

Publication number: CN217813691U
Application number: CN202221392013.4U
Authority: CN
Inventors: 何云
Original assignee: Taizhou Jinsidun Machinery Technology Co ltd
Current assignee: Taizhou Jinsidun Machinery Technology Co ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-11-15
Anticipated expiration: 2032-06-06

Abstract

The application relates to a backpack fire pump, it includes the pump body and engine, the engine includes casing, bent axle and working cylinder, casing fixed connection in the pump body, the working cylinder is equipped with a plurality ofly, and is a plurality of working cylinder fixed connection is in the casing, and is a plurality of the working cylinder winds the axis interval of bent axle sets up and is used for driving the bent axle rotatory, the bent axle is used for the drive the pump body operation. This application is through setting up a plurality of acting cylinders in the engine to improve the power of engine, thereby improve the power and the lift of fire pump, be favorable to improving the effect of fire control effect.

Description

Backpack fire pump

Technical Field

The application relates to the field of water suction pumps, in particular to a backpack fire pump.

Background

When the firefighter extinguishes the fire in the place where the fire engine cannot conveniently reach, the firefighter puts out the fire by carrying the small fire pump on the back. The backpack fire pump brings certain convenience for fire extinguishing, but the rated power and the lift of most backpack fire pumps are smaller at present.

When a fire truck is inconvenient to arrive in case of a forest fire, a low-power and low-lift fire pump is convenient. However, in the case of a fire, the low-power fire pump may not deliver water in time to prevent the fire from being extinguished in time, which may lead to a reduction in the fire extinguishing effect.

SUMMERY OF THE UTILITY MODEL

In order to improve the fire extinguishing effect of fire pump when facing forest fire, this application provides a backpack fire pump.

The application provides a backpack fire pump adopts following technical scheme:

the utility model provides a backpack fire pump, includes the pump body and engine, the engine includes casing, bent axle and working cylinder, casing fixed connection in the pump body, the working cylinder is equipped with a plurality ofly, and is a plurality of working cylinder fixed connection is in the casing, and is a plurality of the working cylinder winds the axis interval of bent axle sets up and is used for the drive bent axle rotatory, the bent axle is used for the drive the pump body operation.

Through adopting above-mentioned technical scheme, a plurality of acting cylinders drive bent axle rotate, and the rethread bent axle drives the pump body and operates to make the power of fire pump and then increase. Even when the fire engine is inconvenient to enter in the face of forest fire, the fire pump also can have higher power, great lift in order to improve the fire extinguishing effect.

Preferably, the working cylinder includes cylinder cap and cylinder body, cylinder body fixed connection in the casing, cylinder cap fixed connection in the cylinder body deviates from the one end of casing, the cylinder body periphery is connected with a plurality of first fin.

Through adopting above-mentioned technical scheme, the area of contact of increase cylinder body and air to improve heat exchange's speed, and then improve heat transfer speed. Therefore, the damage to parts of the working cylinder caused by overheating of the engine can be effectively avoided, and the working cylinder is close to the rated power as much as possible in the fire extinguishing process, so that the fire extinguishing effect is improved. Meanwhile, the service life of the acting cylinder can be effectively prolonged, and a fireman is prevented from being scalded.

Preferably, the surface of the cylinder cover is provided with a plurality of radiating grooves, and a second radiating fin is formed between every two adjacent radiating grooves.

Through adopting above-mentioned technical scheme, increase cylinder cap and the area of contact of air to improve the speed of heat exchange, thereby improve heat exchange efficiency. Can effectively avoid the cylinder cap to lead to spare part to damage because overheated to improve the life of cylinder cap. In addition, the radiating groove that the cylinder cap surface was equipped with can reduce the weight of cylinder cap to in the fire fighter bears, and then saves fire fighter's physical stamina consumption, is favorable to the fire fighter to put out a fire, thereby improves the effect of putting out a fire.

Preferably, the first cooling fin and the second cooling fin are parallel to the axis of the crankshaft, and the plane where the second cooling fin is located is intersected with the plane where the first cooling fin is located.

By adopting the technical scheme, the crankshaft is usually vertical when a fireman carries the fire pump. The first radiating fins and the second radiating fins are parallel to the main shaft, so that hot air around the working cylinder can rise in the vertical direction and cannot be blocked by the first radiating fins and the second radiating fins, and the heat exchange speed of the cylinder wall and the air around the working cylinder is improved, and the heat exchange efficiency is improved.

Preferably, the acting cylinder is provided with a through hole, the through hole penetrates through the cylinder cover and the first radiating fin along the direction close to the casing, a bolt is embedded in the through hole, the cylinder body is provided with a threaded hole, and the threaded hole is coaxial with the through hole; the bolt penetrates through the through hole, is embedded into the threaded hole and is in threaded connection with the cylinder body.

Through adopting above-mentioned technical scheme, the bolt runs through cylinder cap and first fin and is connected in the cylinder body to need not to set up the through-hole to the cylinder body, be favorable to increasing the thickness of cylinder body lateral wall, strengthen the intensity of cylinder body, thereby improve the life of acting cylinder.

Preferably, the pump body is provided with a water inlet and a water outlet; the water outlet is communicated with a water inlet cooling pipe, and the water inlet is communicated with a water outlet cooling pipe; and a radiating pipe is arranged in the acting cylinder and is communicated with the water inlet cooling pipe and the water outlet cooling pipe.

Through adopting above-mentioned technical scheme, the pump body during operation produces the pressure differential between the delivery port of the pump body and the water inlet, and the water pressure of delivery port is greater than the water pressure of water inlet to make behind the cooling water flowed into the cooling tube from the delivery port, the cooling water can be with the heat absorption of acting cylinder jar wall, can effectively avoid the inside spare part of acting cylinder to damage because of high temperature. Thereby improving the working efficiency of the piston in the working cylinder and being beneficial to improving the fire extinguishing effect. The cooling water flows to the water inlet after being heated by the radiating pipe so as to form circulation, and then the utilization rate of water resources is improved.

Preferably, the water inlet cooling pipe comprises a water inlet main pipe and a plurality of water inlet branch pipes, and a radiating pipe is arranged in any one of the cylinders; one end of the main water inlet pipe is communicated with the water outlet, the other end of the main water inlet pipe is communicated with a plurality of water inlet branch pipes, and one water inlet branch pipe is communicated with one radiating pipe; one end of any radiating pipe far away from the water inlet branch pipe is communicated with the water inlet

Through adopting above-mentioned technical scheme, the cooling tube is connected side by side to make the cooling water that flows into the cooling tube all be same cooling temperature, thereby improve the heat exchange efficiency between heat transfer cooling water and the jar wall, be favorable to the cooling of jar wall, can improve the life of acting cylinder. Meanwhile, after the working cylinder dissipates heat, the working cylinder can reach a proper working temperature, so that the working efficiency is improved, the output power of an engine is improved, and the fire extinguishing effect is improved.

Preferably, the axes of the plurality of working cylinders are parallel to each other, the plurality of working cylinders are divided into two groups, and any one group of working cylinder is located on one side of the machine shell, which is far away from the other group of working cylinder.

Through adopting above-mentioned technical scheme for when making the fire fighter bear the fire pump, the weight of bent axle both sides equals as far as possible, and then makes the power that the fire fighter shoulder both sides bore the same as far as possible.

Preferably, one end of the crankshaft is located in the pump body and used for driving the pump body to operate, the other end of the crankshaft penetrates through the casing and is fixedly connected with a driving shaft, and the driving shaft is connected with a cooling fan.

By adopting the technical scheme, the air flow speed is increased, so that the heat exchange speed of air and the cylinder wall is increased, and the heat radiation speed of the cylinder wall is increased. The service life of the parts in the working cylinder is prolonged, the engine is close to the rated power as much as possible, the lift and the power of the fire pump are improved, and the fire extinguishing effect of the fire pump during working is improved.

Preferably, the number of the acting cylinders is two.

Through adopting above-mentioned technical scheme, two acting cylinders compare in a working cylinder that uses always at present, can effectively improve the power of fire pump to improve fire control effect. And two acting cylinders can not excessively increase the whole weight of fire pump, be favorable to the use that can be more convenient when the fireman faces forest fire.

In summary, the present application includes at least one of the following beneficial technical effects:

1. a plurality of working cylinders are arranged in the engine to improve the power of the engine, so that the power and the lift of the fire pump are improved, and the fire extinguishing effect is improved;

2. oligomerization air cooling, water cooling and air cooling are adopted, so that the heat exchange speed is increased, the heat dissipation speed of the acting cylinder is increased, the damage of parts in the acting cylinder is avoided, the working efficiency of parts in the acting cylinder is increased, and the service life of the acting cylinder is prolonged;

3. the radiating groove reduces the weight of fire pump, is equipped with two fire pumps and these two fire pumps and deviates from each other for fire fighter's shoulder both sides atress is as even as possible, and the fire fighter's of being convenient for bear and use.

Drawings

Fig. 1 is a schematic view of the overall structure of a backpack fire pump in example 1.

Fig. 2 is a cross-sectional view of a backpack fire pump according to embodiment 1.

Fig. 3 is a partial cross-sectional view of a backpack fire pump of embodiment 1, mainly used for showing the radiating pipe.

Fig. 4 is a schematic view of the overall structure of a backpack fire pump in example 2.

Fig. 5 is a cross-sectional view of a backpack fire pump of example 2.

Description of the reference numerals: 1. a pump body; 11. a water inlet; 12. a water outlet; 2. an engine; 21. a housing; 22. a cylinder for doing work; 221. a cylinder body; 2211. a radiating pipe; 222. a cylinder cover; 223. a piston; 224. a connecting rod; 225. a first heat sink; 226. a second heat sink; 227. a heat sink; 228. a through hole; 229. a threaded hole; 3. a crankshaft; 31. a shaft body; 32. a balancing weight; 33. a tape guide block; 34. a connecting shaft; 35. a drive shaft; 351. a connecting cylinder; 352. a baffle ring; 5. a bolt; 6. a water inlet cooling pipe; 61. a main water inlet pipe; 611. a flow divider; 62. a water inlet branch pipe; 7. a water outlet cooling pipe; 71. a main water outlet pipe; 711. a flow combiner; 72. a water outlet branch pipe; 8. a nut; 9. a heat radiation fan; 91. a containment vessel; 911. a safety cylinder; 912. a safety net is provided.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses backpack fire pump.

Example 1

Referring to fig. 1, a backpack fire pump includes a pump body 1 and an engine 2, the pump body 1 is provided with a water inlet 11 and a water outlet 12, and the engine 2 includes a casing 21 and two working cylinders 22. The machine shell 21 is fixedly connected to the pump body 1, the machine shell 21 is located at one end of the axis of the pump body 1, the working cylinders 22 are fixedly connected to the machine shell 21, the axes of the two working cylinders 22 are parallel to each other, and the axes of the working cylinders 22 are perpendicular to the axis of the pump body 1.

Referring to fig. 1 and 2, one of the working cylinders 22 is located on a side of the casing 21 facing away from the other working cylinder 22. The engine 2 further comprises a crankshaft 3, the crankshaft 3 is coaxial with the pump body 1, one end of the crankshaft 3 extends into the pump body 1 and is coaxially connected with a pump impeller, and the other end of the crankshaft 3 extends into the machine shell 21 and is connected with the working cylinder 22.

Referring to fig. 2, the working cylinder 22 includes a cylinder body 221 and a cylinder cover 222, the cylinder body 221 is fixedly connected to the casing 21, and the cylinder cover 222 is fixedly connected to a side of the cylinder body 221 away from the casing 21. The interior of cylinder 221 communicates with the interior of housing 21, and piston 223 and connecting rod 224 are coaxially slidably fitted in cylinder 221. One end of connecting rod 224 is hinged to piston 223, and the other end of connecting rod 224 is hinged to crankshaft 3.

The crankshaft 3 includes a shaft body 31, two counter weights 32, a belt guide 33, and two connecting shafts 34. The shaft body 31 is coaxial with the axis of the pump body 1, and the shaft body 31 extends into the housing 21. The weight 32, the belt guide 33 and the connecting shaft 34 are located inside the housing 21. The belt guide block 33 rotates coaxially with the shaft body 31, the belt guide block 33 is fixedly connected with a connecting shaft 34 along both ends of the axis of the shaft body 31, and the connecting shaft 34 is parallel to the shaft body 31. One end of the connecting shaft 34 departing from the belt guide block 33 is fixedly connected to the balancing weights 32, the surface of one balancing weight 32 departing from the belt guide block 33 is connected to the shaft body 31, the surface of the other balancing weight 32 departing from the belt guide block 33 is connected to the driving shaft 35, and the axis of the driving shaft 35 coincides with the axis of the shaft body 31. The connecting shaft 34 is hinged to the connecting rod 224.

Referring to fig. 2, a plurality of first cooling fins 225 are connected to the outer circumference of the cylinder body 221, and the first cooling fins 225 have a ring shape; the adjacent first cooling fins 225 are parallel to each other, the first cooling fins 225 are parallel to the axis of the shaft body 31, and the first cooling fins 225 are perpendicular to the axis of the cylinder body 221. The surface of the cylinder cover 222 facing away from the cylinder body 221 is provided with a plurality of radiating grooves 227, second radiating fins 226 are formed between adjacent radiating grooves 227, the second radiating fins 226 are parallel to each other, and the second radiating fins 226 are parallel to the axis of the axis, so that the second radiating fins 226 are perpendicular to the first radiating fins 225.

The working cylinder 22 and the first cooling fin 225 are both provided with a through hole 228, the axis of the through hole 228 is parallel to the axis of the working cylinder 22, and the through hole 228 penetrates through the cylinder cover 222 and the first cooling fin 225; the cylinder body 221 is provided with a threaded hole 229, the bolt 5 is embedded in the through hole 228, and the bolt 5 extends into the threaded hole 229 and is screwed to the cylinder body 221.

Referring to fig. 1, the backpack fire pump further comprises a water inlet cooling pipe 6 and a water outlet cooling pipe 7, wherein the water inlet cooling pipe 6 comprises a water inlet main pipe 61 and two water inlet branch pipes 62, and the water outlet cooling pipe 7 comprises a water outlet main pipe 71 and two water outlet branch pipes 72.

The water outlet 12 is communicated with the water inlet main pipe 61, one end of the water inlet main pipe 61, which is far away from the water outlet 12, is connected with a flow divider 611, and the flow divider 611 simultaneously communicates the water inlet main pipe 61 with the two water inlet branch pipes 62.

Referring to fig. 1 and 3, a heat dissipating pipe 2211 is disposed in the cylinder body 221, and a projection of the heat dissipating pipe 2211 along the axis of the cylinder body 221 is circular. The heat dissipating pipe 2211 is provided with two pipe openings, one pipe opening is communicated with the water inlet branch pipe 62, and the other pipe opening is communicated with the water outlet branch pipe 72. One end of the water outlet branch pipe 72 far from the radiating pipe 2211 is connected with a flow combiner 711, and the flow combiner 711 connects the two water outlet branch pipes 72 to the water outlet main pipe 71 at the same time. The side of the main outlet pipe 71 away from the flow diverter 711 is connected to the pump body 1 and communicates with the water inlet 11. Both the flow divider 611 and the flow combiner 711 can adopt a tee pipe.

The implementation principle of embodiment 1 of the application is as follows: be equipped with two acting cylinders 22 in the engine 2, two acting cylinders 22 drive same bent axle 3 and operate, drive the fire pump through bent axle 3 and carry out work, and then improve the work efficiency and the lift of fire pump.

When the pump body 1 works, a pressure difference is generated between the water outlet 12 and the water inlet 11 of the pump body 1, and the water pressure of the water outlet 12 is greater than the water pressure of the water inlet 11, so that part of water at the water outlet 12 of the pump body 1 sequentially flows through the water inlet main pipe 61, the water inlet branch pipe 62, the heat dissipation pipe 2211, the water outlet branch pipe 72 and the water outlet main pipe 71, and then flows back into the water inlet 11 of the pump body 1 to form a circulation, so as to realize the water-cooling heat dissipation of the working cylinder 22. The first and second

heat radiating fins

225 and 226 increase the heat exchange speed by increasing the contact area of the cylinder wall with the air.

Example 2

Referring to fig. 4 and 5, the present embodiment is different from embodiment 1 in that a connecting cylinder 351 is sleeved on the outer circumference of the driving shaft 35, a stopper ring 352 is connected to the outer circumference of the connecting cylinder 351, and the stopper ring 352 and the connecting cylinder 351 are integrally molded. The periphery of drive shaft 35 remote from housing 21 is threaded and threadedly connected with nut 8. The surface of the connecting cylinder 351 close to the housing 21 abuts against the housing 21, and the surface of the connecting cylinder 351 away from the housing 21 abuts against the nut 8. The outer circumference of the retainer ring 352 is fixedly connected with a heat radiation fan 9. A safety shell 91 is fixedly connected to the housing 21, the safety shell includes a safety cylinder 911 and two safety nets 912, the two safety nets 912 are parallel to each other, the safety cylinder 911 is connected between the two safety nets 912, and both the safety nets 912 and the safety cylinder 911 are coaxial with the driving shaft 35, wherein one safety net 912 is fixedly connected to the housing 21. A heat dissipation fan 9 is located within the safety cylinder 911.

The implementation principle of embodiment 2 of the present application is as follows:

the cooling fan 9 accelerates the circulation speed of air around the working cylinder 22 along with the rotation of the driving shaft 35, so that the heat exchange efficiency between the working cylinder 22 and the air is further improved, and the containment vessel 91 protects the cooling fan 9 to protect firemen.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a backpack fire pump which characterized in that: including the pump body (1) and engine (2), engine (2) include casing (21), bent axle (3) and do work jar (22), casing (21) fixed connection in the pump body (1), do work jar (22) are equipped with a plurality ofly, and are a plurality of do work jar (22) fixed connection in casing (21), and are a plurality of do work jar (22) wind the axis interval of bent axle (3) sets up and is used for driving bent axle (3) rotation, bent axle (3) are used for the drive the operation of the pump body (1).

2. A backpack fire pump as claimed in claim 1, wherein: the working cylinder (22) comprises a cylinder cover (222) and a cylinder body (221), the cylinder body (221) is fixedly connected to the machine shell (21), the cylinder cover (222) is fixedly connected to one end, deviating from the machine shell (21), of the cylinder body (221), and a plurality of first cooling fins (225) are connected to the periphery of the cylinder body (221).

3. A backpack fire pump as claimed in claim 2, wherein: the surface of cylinder cap (222) is equipped with a plurality of radiating grooves (227), adjacent radiating groove (227) between form second fin (226).

4. A backpack fire pump as defined in claim 3 in which: the first fin (225) and the second fin (226) are parallel to an axis of the crankshaft (3).

5. A backpack fire pump as claimed in claim 2, wherein: the working cylinder (22) is provided with a through hole (228), the through hole (228) penetrates through the cylinder cover (222) and the first cooling fin (225) along the direction close to the shell (21), a bolt (5) is embedded in the through hole (228), the cylinder body (221) is provided with a threaded hole (229), and the threaded hole (229) is coaxial with the through hole (228); the bolt (5) is inserted into the threaded hole (229) through the through hole (228) and is screwed to the cylinder body (221).

6. A backpack fire pump as defined in claim 1 wherein: the pump body (1) is provided with a water inlet (11) and a water outlet (12); the water outlet (12) is communicated with a water inlet cooling pipe (6), and the water inlet (11) is communicated with a water outlet cooling pipe (7); a radiating pipe (2211) is arranged in the working cylinder (22), and the radiating pipe (2211) is communicated with the water inlet cooling pipe (6) and the water outlet cooling pipe (7).

7. A backpack fire pump as claimed in claim 6, wherein: the water inlet cooling pipe (6) comprises a water inlet main pipe (61) and a plurality of water inlet branch pipes (62); one end of the water inlet main pipe (61) is communicated with the water outlet (12), the other end of the water inlet main pipe (61) is communicated with a plurality of water inlet branch pipes (62), and one water inlet branch pipe (62) is communicated with one radiating pipe (2211); one end of the radiating pipe (2211) far away from the water inlet branch pipe (62) is communicated with the water outlet cooling pipe (7).

8. A backpack fire pump as claimed in claim 1, wherein: the axes of the working cylinders (22) are parallel to each other, the working cylinders (22) are divided into two groups, and any one group of the working cylinders (22) is positioned on one side of the machine shell (21) departing from the other group of the working cylinders (22).

9. A backpack fire pump as claimed in claim 1, wherein: bent axle (3) one end is located in the pump body (1) and be used for driving the pump body (1) operation, bent axle (3) other end passes casing (21) and fixedly connected with drive shaft (35), drive shaft (35) are connected with radiator fan (9).

10. A backpack fire pump as defined in claim 1 wherein: the number of the working cylinders (22) is two.