Novel fire pump

Abstract

The invention relates to the field of fire pumps and discloses a novel fire pump which comprises a pump body, the water outlet end of the pump body fixedly communicates with the lower end of a three-way pipe, the left end and the right end of the three-way pipe fixedly communicate with one ends of first water outlet pipes, the two first water outlet pipes extend left and right, and the other ends of the first water outlet pipes are provided with large water outlets. The outer walls of the two first water outlet pipes are fixedly communicated with one end of a second water outlet pipe, the pipe diameter of the second water outlet pipe is small, the extending direction of the other end of the second water outlet pipe is the same as the direction of the first water outlet pipe on the same side, the other end of the second water outlet pipe is provided with a small water outlet, and the other end of the second water outlet pipe is provided with a third valve. The water pump is provided with the water outlet pipes with different thicknesses, proper water outlets can be selected according to actual requirements, so that the flexibility of the water pump is improved, and unnecessary energy waste can be avoided while the water outlet requirement is met by selecting the water outlet pipes with different thicknesses.

Description

Technical Field

[0001] The present invention relates to the field of fire pumps, and particularly to a novel fire pump. Background Art

[0002] Fire pumps are crucial equipment in the fire protection system. They are responsible for providing a stable and high-pressure water source for the fire protection system to ensure timely and effective fire extinguishing in case of a fire.

[0003] Currently, the existing fire pumps have only one water outlet, and the size of the water outlet is fixed, unable to adjust the water flow rate and pressure according to actual needs, which may cause inconvenience in practical applications. Especially in the case of complex and changeable situations at the fire scene, a single water outlet may not meet the fire extinguishing requirements of different scenarios. Summary of the Invention

[0004] In order to overcome the above deficiencies, the present invention provides a novel fire pump.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A novel fire pump includes a pump body. A gear box is installed on the rear side wall of the pump body. A rotating shaft is rotatably connected between the middle parts of the front and rear inner walls of the pump body. The rear end of the rotating shaft penetrates out of the rear side of the pump body. The front end of the output shaft of the gear box is fixedly connected to the rear end of the rotating shaft. The front and rear ends of the output shaft are rotatably connected to the inner wall of the gear box. A second gear is fixedly sleeved on the outer wall of the output shaft. There is an input shaft below the output shaft. The front and rear ends of the input shaft are rotatably connected to the inner wall of the gear box. The rear end of the input shaft penetrates out of the outer wall of the gear box. A first gear is fixedly sleeved on the middle outer wall of the input shaft. The first gear meshes with the second gear. The diameter of the first gear is larger than that of the second gear. An impeller is fixedly sleeved on the outer wall of the rotating shaft. One end of a water inlet pipe is fixedly communicated with the front side water inlet end of the pump body. The other end of the water inlet pipe is provided with a water inlet. A first valve is installed at the other end of the water inlet pipe. The water outlet end of the pump body is fixedly communicated with the lower end of a tee pipe. Both the left and right ends of the tee pipe are fixedly communicated with one end of a first water outlet pipe. The two first water outlet pipes extend left and right. The other end of the first water outlet pipe is provided with a large water outlet. A second valve is installed at the other end of the first water outlet pipe. One end of a second water outlet pipe is fixedly communicated with the outer wall of each of the two first water outlet pipes. The diameter of the second water outlet pipe is smaller. The extending direction of the other end of the second water outlet pipe is the same as the orientation of the first water outlet pipe on the same side. The other end of the second water outlet pipe is provided with a small water outlet. A third valve is installed at the other end of the water outlet pipe.

[0007] The impeller includes a first-stage impeller, three guide vanes, two first partitions, three second-stage impellers, and a second partition. The first-stage impeller, guide vanes, first partitions, second-stage impellers, guide vanes, first partitions, second-stage impellers, guide vanes, second partition, and second-stage impeller are closely distributed in sequence from front to back. The second-stage impellers are respectively located inside the first partitions and the second partition. The first-stage impeller, guide vanes, and second-stage impellers are all fixedly sleeved on the outer wall of the rotating shaft, and the outer walls of the first partitions and the second partition are fixedly connected to the inner wall of the pump body.

[0008] The first-stage impeller includes a first fixing plate. There is a second fixing plate at the rear side of the first fixing plate. Both the first fixing plate and the second fixing plate are annular. The front side of the inner edge of the second fixing plate is fixedly connected to a first cylinder. The front end of the first cylinder penetrates through the front side of the first fixing plate. The front side of the inner edge of the first fixing plate is fixedly connected to a second cylinder. The second cylinder is located outside the first cylinder. A number of first blades are fixedly connected between the outer wall of the first cylinder and the inner wall of the second cylinder. The first blades are evenly distributed around the outer wall of the first cylinder. A number of second blades are fixedly connected between the opposite side walls of the first fixing plate and the second fixing plate. The second blades are arc-shaped and are evenly distributed.

[0009] A number of guiding vanes are fixedly connected to the rear side wall of the guide vane. The guiding vanes are arc-shaped, and the arc direction of the guiding vanes is opposite to the arc direction of the second blades.

[0010] The first partition includes a third fixing plate. The third fixing plate is annular. The diameter of the inner edge of the third fixing plate is larger than the outer wall diameter of the front end of the second-stage impeller. The outer edge of the rear side wall of the third fixing plate is fixedly connected to a first collar. The outer wall of the first collar is fixedly connected to the inner wall of the pump body.

[0011] The second-stage impeller includes a fourth fixing plate. There is a fifth fixing plate at the rear side of the fourth fixing plate. Both the fourth fixing plate and the fifth fixing plate are annular. The front side of the inner edge of the fifth fixing plate is fixedly connected to a third cylinder. The front end of the third cylinder penetrates through the front side of the fourth fixing plate. The front side of the inner edge of the fourth fixing plate is fixedly connected to a fourth cylinder. The fourth cylinder is located outside the third cylinder. A number of third blades are fixedly connected between the opposite side walls of the fourth fixing plate and the fifth fixing plate. The third blades are arc-shaped and are evenly distributed. The arc direction of the third blades is opposite to the arc direction of the guiding vanes.

[0012] The second partition includes a sixth fixing plate. The shape and size of the sixth fixing plate are the same as those of the third fixing plate. The outer edge of the rear side wall of the sixth fixing plate is fixedly connected to a second collar. A number of fourth blades are fixedly connected to the front side edge of the second collar. The fourth blades are evenly distributed along the second collar.

[0013] Advantages of the present invention:

[0014] Through the design of multi-stage impellers and guide vanes in the present invention, the water flow is dispersed and converged multiple times in the pump body, improving the pumping efficiency and water flow velocity. At the same time, the speed reduction and torque increase function of the gearbox enables the rotating shaft to obtain a greater torque, thereby enhancing the pressurization ability of the water pump.

[0015] There are two water outlet methods, a large water outlet and a small water outlet, which can be flexibly selected according to actual fire-fighting needs. The large water outlet is suitable for scenarios that require a large amount of water flow, while the small water outlet is suitable for scenarios that require fine control of the water flow.

[0016] The entire water pump has a compact structure, occupies a small area, and is convenient for installation and use. At the same time, the reasonable layout of the multi-stage impellers and guide vanes and the transmission design of the gearbox make the water pump more stable and reliable during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is Figure 1 a schematic diagram of the rear side view;

[0019] Figure 3 is a sectional view of the pump body and the gearbox;

[0020] Figure 4 is a schematic structural diagram of the impeller;

[0021] Figure 5 is Figure 4 a schematic diagram of the right side view of;

[0022] Figure 6 is a schematic structural diagram of the first-stage impeller;

[0023] Figure 7 is a schematic structural diagram of the guide vane;

[0024] Figure 8 is a schematic structural diagram of the first partition and the second partition;

[0025] Figure 9 is a schematic structural diagram of the secondary impeller.

[0026] In all the attached drawings, the reference numerals are specifically as follows: 1. Pump body; 2. Gearbox; 3. Rotating shaft; 4. Impeller; 5. Water inlet pipe; 6. Valve 1; 7. Water inlet; 8. Tee pipe; 9. Outlet pipe 1; 10. Valve 2; 11. Large water outlet; 12. Outlet pipe 2; 13. Valve 3; 14. Small water outlet; 15. Input shaft; 16. Gear 1; 17. Output shaft; 18. Gear 2; 19. Water inlet end; 20. Water outlet end; 41. Primary impeller; 42. Guide vane; 43. First partition; 44. Secondary impeller; 45. Second partition; 411. Fixing plate 1; 412. Fixing plate 2; 413. Cylinder 1; 414. Cylinder 2; 415. Blade 1; 416. Blade 2; 421. Guide vane; 431. Fixing plate 3; 432. Collar 1; 441. Fixing plate 4; 442. Fixing plate 5; 443. Cylinder 3; 444. Cylinder 4; 445. Blade 3; 451. Fixing plate 6; 452. Collar 2; 453. Blade 4. Detailed implementation mode

[0027] As Figures 1-6 shown: A new type of fire pump includes a pump body 1. A gearbox 2 is installed on the rear side wall of the pump body 1. A rotating shaft 3 is rotatably connected between the middle parts of the front and rear inner walls of the pump body 1. The rear end of the rotating shaft 3 penetrates through the rear side of the pump body 1. The front end of the output shaft 17 of the gearbox 2 is fixedly connected to the rear end of the rotating shaft 3. The front and rear ends of the output shaft 17 are rotatably connected to the inner wall of the gearbox 2. A gear 2 18 is fixedly sleeved on the outer wall of the output shaft 17. There is an input shaft 15 below the output shaft 17. The front and rear ends of the input shaft 15 are rotatably connected to the inner wall of the gearbox 2. The rear end of the input shaft 15 penetrates through the outer wall of the gearbox 2. A gear 1 16 is fixedly sleeved on the middle outer wall of the input shaft 15. The gear 1 16 meshes with the gear 2 18. The diameter of the gear 1 16 is larger than that of the gear 2 18. An impeller 4 is fixedly sleeved on the outer wall of the rotating shaft 3. The water inlet end 19 on the front side of the pump body 1 is fixedly communicated with one end of a water inlet pipe 5. The other end of the water inlet pipe 5 is provided with a water inlet 7. A valve 1 6 is installed at the other end of the water inlet pipe 5. The water outlet end 20 of the pump body 1 is fixedly communicated with the lower end of a tee pipe 8. One end of an outlet pipe 1 9 is fixedly communicated with each of the left and right ends of the tee pipe 8. The two outlet pipes 1 9 extend left and right. The other end of the outlet pipe 1 9 is provided with a large water outlet 11. A valve 2 10 is installed at the other end of the outlet pipe 1 9. One end of an outlet pipe 2 12 is fixedly communicated with the outer wall of each of the two outlet pipes 1 9. The diameter of the outlet pipe 2 12 is smaller. The extending direction of the other end of the outlet pipe 2 12 is the same as the orientation of the outlet pipe 1 9 on the same side. The other end of the outlet pipe 2 12 is provided with a small water outlet 14. A valve 3 13 is installed at the other end of the outlet pipe 12.

[0028] The impeller 4 includes a first-stage impeller 41, three guide vanes 42, two first partitions 43, three second-stage impellers 44, and a second partition 45. The first-stage impeller 41, the guide vane 42, the first partition 43, the second-stage impeller 44, the guide vane 42, the first partition 43, the second-stage impeller 44, the guide vane 42, the second partition 45, and the second-stage impeller 44 are closely distributed in sequence from front to back. The second-stage impellers 44 are respectively located inside the first partitions 43 and the second partition 45. The first-stage impeller 41, the guide vane 42, and the second-stage impellers 44 are all fixedly sleeved on the outer wall of the rotating shaft 3. The outer walls of the first partitions 43 and the second partition 45 are fixedly connected to the inner wall of the pump body 1.

[0029] The first-stage impeller 41 includes a first fixing plate 411. The rear side of the first fixing plate 411 has a second fixing plate 412. Both the first fixing plate 411 and the second fixing plate 412 are annular. The front side of the inner edge of the second fixing plate 412 is fixedly connected to a first cylinder 413. The front end of the first cylinder 413 penetrates through the front side of the first fixing plate 411. The front side of the inner edge of the first fixing plate 411 is fixedly connected to a second cylinder 414. The second cylinder 414 is located outside the first cylinder 413. A plurality of first blades 415 are fixedly connected between the outer wall of the first cylinder 413 and the inner wall of the second cylinder 414. The first blades 415 are evenly distributed around the outer wall of the first cylinder 413. A plurality of second blades 416 are fixedly connected between the opposite side walls of the first fixing plate 411 and the second fixing plate 412. The second blades 416 are arc-shaped and are evenly distributed.

[0030] A plurality of guide vanes 421 are fixedly connected to the rear side wall of the guide vane 42. The guide vanes 421 are arc-shaped, and the arc direction of the guide vanes 421 is opposite to the arc direction of the second blades 416.

[0031] The first partition 43 includes a third fixing plate 431. The third fixing plate 431 is annular. The diameter of the inner edge of the third fixing plate 431 is larger than the outer wall diameter of the front end of the second-stage impeller 44. The outer edge of the rear side wall of the third fixing plate 431 is fixedly connected to a first collar 432. The outer wall of the first collar 432 is fixedly connected to the inner wall of the pump body 1.

[0032] The second-stage impeller 44 includes a fourth fixing plate 441. The rear side of the fourth fixing plate 441 has a fifth fixing plate 442. Both the fourth fixing plate 441 and the fifth fixing plate 442 are annular. The front side of the inner edge of the fifth fixing plate 442 is fixedly connected to a third cylinder 443. The front end of the third cylinder 443 penetrates through the front side of the fourth fixing plate 441. The front side of the inner edge of the fourth fixing plate 441 is fixedly connected to a fourth cylinder 444. The fourth cylinder 444 is located outside the third cylinder 443. A plurality of third blades 445 are fixedly connected between the opposite side walls of the fourth fixing plate 441 and the fifth fixing plate 442. The third blades 445 are arc-shaped and are evenly distributed. The arc direction of the third blades 445 is opposite to the arc direction of the guide vanes 421.

[0033] The second partition plate 45 includes a fixing plate six 451. The shape and size of the fixing plate six 451 are the same as those of the fixing plate three 431. The outer edge of the rear side wall of the fixing plate six 451 is fixedly connected with a collar two 452. A plurality of blades four 453 are fixedly connected to the front side edge of the collar two 452. The blades four 453 are evenly distributed along the collar two 452.

[0034] When the fire pump needs to be started, first connect the motor through the input shaft 15 of the gearbox 2. The motor drives the rotating shaft 3 through the gearbox 2. As the rotating shaft 3 rotates, the impeller 4 fixedly sleeved on the outer wall of the rotating shaft also starts to rotate. The rotation of the impeller 4 generates centrifugal force, causing water to be sucked in and enter the pump body 1 from the water inlet end 19.

[0035] The front water inlet end of the pump body 1 is connected to the water source through a water inlet pipe 5. The other end of the water inlet pipe 5 is provided with a water inlet 7 and is equipped with a valve one 6. When the valve one 6 is opened, the water from the water source will enter the water inlet pipe 5 through the water inlet 7 and then enter the pump body 1.

[0036] The primary impeller 41 sucks water from the water inlet end 19 and throws the water outward through its blade structure.

[0037] The water thrown out by the primary impeller 41 is guided by the guide vane 42 and flows to the front end of the secondary impeller 44. The arc design of the guide vane 42 helps to change the direction of the water flow so that it can smoothly enter the secondary impeller 44.

[0038] The secondary impeller 44 receives the water flow from the guide vane 42 and throws the water outward again. This process is repeated between multiple secondary impellers 44 and guide vanes 42 to achieve multiple dispersions and convergences of the water flow, and finally flows out from the water outlet end 20 of the pump body 1.

[0039] The water outlet end 20 of the pump body 1 is connected to two first outlet pipes 9 through a tee pipe 8. The outer walls of these two first outlet pipes 9 are both connected to a second outlet pipe 12. The first outlet pipe 9 and the second outlet pipe 12 have different thicknesses and are respectively provided with a large water outlet 11 and a small water outlet 14, and are respectively equipped with a valve two 10 and a valve three 13. According to actual needs, it is possible to choose to open the valve two 10 to use the large water outlet 11 for a large amount of water discharge, or choose to open the valve three 13 to use the small water outlet 14 for a small amount of water discharge.

[0040] When a certain water outlet is selected, open the corresponding valve, and the water flow will flow out through the opened valve and the corresponding outlet pipe. If the water from two water outlets is needed simultaneously, the two valves can also be opened simultaneously.

Claims

1. A new type of fire pump, characterized in that, It includes a pump body (1). A gearbox (2) is installed on the rear side wall of the pump body (1). A rotating shaft (3) is rotatably connected between the middle parts of the front and rear inner walls of the pump body (1). The rear end of the rotating shaft (3) penetrates out of the rear side of the pump body (1). The front end of the output shaft (17) of the gearbox (2) is fixedly connected to the rear end of the rotating shaft (3). The front and rear ends of the output shaft (17) are rotatably connected to the inner wall of the gearbox (2). A second gear (18) is fixedly sleeved on the outer wall of the output shaft (17). Below the output shaft (17) there is an input shaft (15). The front and rear ends of the input shaft (15) are rotatably connected to the inner wall of the gearbox (2). The rear end of the input shaft (15) penetrates out of the outer wall of the gearbox (2). A first gear (16) is fixedly sleeved on the middle outer wall of the input shaft (15). The first gear (16) meshes with the second gear (18). The diameter of the first gear (16) is larger than that of the second gear (18). An impeller (4) is fixedly sleeved on the outer wall of the rotating shaft (3). The water inlet end (19) on the front side of the pump body (1) is fixedly communicated with one end of a water inlet pipe (5). The other end of the water inlet pipe (5) is provided with a water inlet (7). A first valve (6) is installed at the other end of the water inlet pipe (5). The water outlet end (20) of the pump body (1) is fixedly communicated with the lower end of a tee pipe (8). The left and right ends of the tee pipe (8) are both fixedly communicated with one end of a first outlet pipe (9). The two first outlet pipes (9) extend left and right. The other end of the first outlet pipe (9) is provided with a large water outlet (11). A second valve (10) is installed at the other end of the first outlet pipe (9). One end of a second outlet pipe (12) is fixedly communicated with the outer wall of each of the two first outlet pipes (9). The diameter of the second outlet pipe (12) is smaller. The extending direction of the other end of the second outlet pipe (12) is the same as the orientation of the first outlet pipe (9) on the same side. The other end of the second outlet pipe (12) is provided with a small water outlet (14). A third valve (13) is installed at the other end of the outlet pipe (12).

2. A novel fire pump according to claim 1, characterized in that, The impeller (4) includes a primary impeller (41), three guide vanes (42), two first partitions (43), three secondary impellers (44) and a second partition (45). The primary impeller (41), the guide vanes (42), the first partitions (43), the secondary impellers (44), the guide vanes (42), the first partitions (43), the secondary impellers (44), the guide vanes (42), the second partition (45) and the secondary impellers (44) are closely distributed in sequence from front to back. The secondary impellers (44) are respectively located inside the first partitions (43) and the second partition (45). The primary impeller (41), the guide vanes (42) and the secondary impellers (44) are all fixedly sleeved on the outer wall of the rotating shaft (3). The outer walls of the first partitions (43) and the second partition (45) are both fixedly connected to the inner wall of the pump body (1).

3. A novel fire pump according to claim 2, characterized in that, The primary impeller (41) includes a first fixing plate (411). There is a second fixing plate (412) at the rear side of the first fixing plate (411). Both the first fixing plate (411) and the second fixing plate (412) are annular. The front side of the inner edge of the second fixing plate (412) is fixedly connected to a first cylinder (413). The front end of the first cylinder (413) penetrates through the front side of the first fixing plate (411). The front side of the inner edge of the first fixing plate (411) is fixedly connected to a second cylinder (414). The second cylinder (414) is located outside the first cylinder (413). A plurality of first blades (415) are fixedly connected between the outer wall of the first cylinder (413) and the inner wall of the second cylinder (414). The first blades (415) are evenly distributed around the outer wall of the first cylinder (413). A plurality of second blades (416) are fixedly connected between the opposite side walls of the first fixing plate (411) and the second fixing plate (412). The second blades (416) are arc-shaped and are evenly distributed.

4. A novel fire pump according to claim 3, characterized in that, A plurality of guide vanes (421) are fixedly connected to the rear side wall of the guide vane (42). The guide vanes (421) are arc-shaped, and the arc direction of the guide vanes (421) is opposite to the arc direction of the second blades (416).

5. A novel fire pump according to claim 2, characterized in that, The first partition plate (43) includes a third fixing plate (431). The third fixing plate (431) is annular. The diameter of the inner edge of the third fixing plate (431) is larger than the outer wall diameter of the front end of the secondary impeller (44). The outer edge of the rear side wall of the third fixing plate (431) is fixedly connected to a first collar (432). The outer wall of the first collar (432) is fixedly connected to the inner wall of the pump body (1).

6. A novel fire pump according to claim 4, characterized in that, The secondary impeller (44) includes a fourth fixing plate (441). There is a fifth fixing plate (442) at the rear side of the fourth fixing plate (441). Both the fourth fixing plate (441) and the fifth fixing plate (442) are annular. The front side of the inner edge of the fifth fixing plate (442) is fixedly connected to a third cylinder (443). The front end of the third cylinder (443) penetrates through the front side of the fourth fixing plate (441). The front side of the inner edge of the fourth fixing plate (441) is fixedly connected to a fourth cylinder (444). The fourth cylinder (444) is located outside the third cylinder (443). A plurality of third blades (445) are fixedly connected between the opposite side walls of the fourth fixing plate (441) and the fifth fixing plate (442). The third blades (445) are arc-shaped and are evenly distributed. The arc direction of the third blades (445) is opposite to the arc direction of the guide vanes (421).

7. A novel fire pump according to claim 5, characterized in that, The second partition plate (45) includes a sixth fixing plate (451). The shape and size of the sixth fixing plate (451) are the same as those of the third fixing plate (431). The outer edge of the rear side wall of the sixth fixing plate (451) is fixedly connected to a second collar (452). A plurality of fourth blades (453) are fixedly connected to the front side edge of the second collar (452). The fourth blades (453) are evenly distributed along the second collar (452).

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