CN2313083Y

CN2313083Y - Self-suction centrifugal pump

Info

Publication number: CN2313083Y
Application number: CN 97225806
Authority: CN
Inventors: 张继明; 王修明
Original assignee: YUANYANG COUNTY HIGH-NEW TECHNOLOGY PILOT FACTORY
Current assignee: YUANYANG COUNTY HIGH-NEW TECHNOLOGY PILOT FACTORY
Priority date: 1997-09-08
Filing date: 1997-09-08
Publication date: 1999-04-07
Anticipated expiration: 2007-09-08

Abstract

The utility model relates to a self-suction centrifugal pump which comprises a main shaft (2), a blade wheel (9), a pump case (10), a main shaft bearing (3) and a bearing case (4). The self-suction centrifugal pump is characterized in that a driving wheel (7) of a clutch and driven wheel (21) driven by the driving wheel are arranged on the main shaft; an eccentric pin (20) is arranged on the driven wheel and connected with a connecting rod (19); the other end of the connecting rod (19) is provided with a piston (15); a fixed pumping cylinder body (14) is arranged outside the piston; an air inlet valve (16) of the cylinder body is communicated with a suction port of the pump case (10); an exhaust port of the pump case (10) is provided with a one way valve (11); when the pump is started, the piston (15) can expel the air of the suction port of the pump case and can increase the liquid level of a suction pipe to finish starting; the self-suction centrifugal pump does not need affusion or a foot valve.

Description

Self-priming centrifugal pump

The utility model relates to the objective formula pump of non-change, particularly centrifugal priming of pump.

At present, in middle-size and small-size various centrifugal pump, adopt the starting of perfusion topping up mostly.Then adopt another vacuum pumps (as water ring pump) to bleed at the large centrifugal pump more and draw the liquid starting, the topping up starting will be poured in the pump by other water source water intaking, very inconvenient, Pump Suction Nozzle also will have bottom valve, increase suction resistance during work, adopted the starting of bleeding of another pump, increased equipment investment and installation workload, and the extraction pump utilization ratio is not high, so the startup problem of centrifugal pump is failed fine solution always.

The purpose of this utility model provides the self-priming centrifugal pump that a kind of centrifugal pump itself has self-priming apparatus.

The purpose of this utility model realizes by following technological scheme.Self-priming centrifugal pump has main shaft, impeller, pump case, main shaft bearing, cartridge housing is characterized in that also having driving wheel, the clutch between main shaft and the driving wheel on the main shaft, the handle of controlled clutch, be driven the follower that wheel drives, the axle of follower and the bearing that is connected with cartridge housing on this, cam pin in addition on the follower, one end is connected in the connecting rod of cam pin, the other end of connecting rod is connected with piston, piston has the fixing cylinder body of bleeding outward, and suction valve and outlet valve are arranged on the cylinder body of bleeding, and outlet valve connects atmosphere, have connecting tube to be connected between the suction port of suction valve and pump case, the exhaust port of pump case has one-way valve.

During pump startup, the clutch of driving wheel is closed, driving wheel and main shaft together rotate, pass through follower, cam pin, connecting rod, the connecting rod of piston make piston to-and-fro motion in the fixing cylinder body of bleeding, thereby the air in the suction pipe of pump can be extracted out, and drain into atmosphere by outlet valve, because the pump case exhaust port has one-way valve, air can not enter pump case, liquid level raises gradually in the suction pipe, when reaching suction head, pump impeller works and liquid is sucked and discharge from exhaust port, and can unsnap driving wheel and main shaft this moment, starting to work of centrifugal pump finished in connecting rod and piston stop motion.

Self-priming centrifugal pump of the present utility model does not need water-filling during starting, do not need other starting equipment yet, and as bottom valve, air pump etc., centrifugal pump reach the self-priming starting, for water scarcity area particularly suitable.

Below in conjunction with drawings and Examples self-priming centrifugal pump of the present utility model is explained in detail.

Fig. 1 is the sectional view of the utility model self-priming centrifugal pump;

Fig. 2 is the sectional view of the utility model self-priming centrifugal pump along A-A face among Fig. 1;

Fig. 3 is the another kind of structural drawing of the driving wheel clutch of the utility model self-priming centrifugal pump.

As Fig. 1, Fig. 2, self-priming centrifugal pump has main shaft 2, impeller 9 is housed on the main shaft, impeller outer has pump case 10, bearing 3 is housed on the main shaft, cartridge housing 4 is arranged outside the bearing 3, also have coupling drive or belt pulley 1 on the main shaft, drive main axis rotation by motor or belt, but this self-priming centrifugal pump has one is positioned at main shaft middle part and driving wheels 7 main shaft 2 clutches, follower 21 by the driving wheel drive, follower 21 1 sides have a cam pin 20, the rotating connecting rod 19 that is connected with on the cam pin 20, the rotating piston 15 that is connected with of the other end of connecting rod 19, the piston 15 outer cylinder bodies 14 of bleeding, cylinder body 14 is fixed on the bottom of cartridge housing 4, the end of cylinder body 14 of bleeding is equipped with suction valve 16, outlet valve 18, and advance, outlet pipe, suction tude 13 makes suction valve 16 communicate with the arm 12 of the suction port of the pump housing, steam outlet pipe 17 logical atmosphere, exhaust port at pump is connected to one-way valve 11, between main shaft 2 and the driving wheel 7 clutch is arranged, also has the handle 5 that links to each other with cartridge housing 4 with hinge 6, said clutch can be the driving wheel 7 that is included in the key 8 on the main shaft 2 and can be slided on axle by handle 5 manipulations, when stirring handle with hand, handle links to each other with driving wheel 7, driving wheel is slided on axle 2 and combine with key 8 or throw off, clutch also can be the key 8 that is included on the main shaft 2, what link to each other with handle 5 handles driving wheel 7 (see figure 3)s that tooth is arranged in a side of jaw clutch cover 24 that slides on the main shaft 2 and idle running on main shaft 2 by handle 5, stir handle 5 with hand, jaw clutch cover 24 is combined with driving wheel 7 or throw off, the opposite side of follower 21 has axle 22, on the axle 22 bearing 23 is arranged, bearing 23 can be contained in the matching hole of making on the whole cartridge housing 4, also can be contained in split cartridge housing 4 be connected together with cartridge housing 4 and the matching hole with the axle bed of processing in.

Said driving wheel 7 and follower 21 can be a pair of gears, or a pair of friction wheel, and also a pair of belt pulley also has drivign belt between the two-wheeled.

During starting, with handle 5 manipulations driving wheel 7 is combined with main shaft 2, driving wheel 7 drives followers 21 and rotates the pin 20 of follower 21, connecting rod 19, piston 15 forms connecting rod and drives piston 15 to-and-fro motion in the cylinder body 14 of bleeding, and is discharged into atmosphere by suction valve with the air suction of suction port and from exhaust port, and the liquid level of suction port raises gradually, can pump liquid until impeller, handle 5 can be moved back to, driving wheel is not changeed, finish starting to work.

Self-priming centrifugal pump of the present utility model does not need water filling during starting, do not need bottom valve, and starting is convenient, is specially adapted to the usefulness of irrigations such as rural area.

Claims

1, a kind of self-priming centrifugal pump, has main shaft (2), impeller (9), pump case (10), main shaft bearing (3), cartridge housing (4) is characterized in that also having driving wheel (7) on main shaft (2), clutch between main shaft (2) and the driving wheel (7), the handle of controlled clutch (5) is driven the follower (21) that wheel drives, have on the follower axle (22) with this on the bearing (23) that is connected with cartridge housing (4), also has cam pin (20) on the follower, one end is connected in the connecting rod (19) of cam pin (20), and the other end of connecting rod (19) has piston (15), and the fixing cylinder body of bleeding (14) is arranged outside the piston (15), bleeding has suction valve (16) and outlet valve (18) on the cylinder body (14), outlet valve connects atmosphere, between the suction port of suction valve (16) and pump case (10) is arranged connecting tube (13), and the exhaust port of pump case (10) has one-way valve (11).

2, self-priming centrifugal pump as claimed in claim 1 is characterized in that said driving wheel (7), and follower (21) is gear or friction wheel.

3, self-priming centrifugal pump as claimed in claim 1 is characterized in that said driving wheel (7), and follower (21) is a belt pulley, also has drivign belt between the two-wheeled.

4, self-priming centrifugal pump as claimed in claim 1 or 2 is characterized in that the clutch between said main shaft (2) and the driving wheel (7) comprises key (8) on main shaft (2) and the driving wheel (7) that is slided at axle (2) by handle (5) manipulation.

5, self-priming centrifugal pump as claimed in claim 1 or 2, it is characterized in that clutch between said main shaft (2) and the driving wheel (7) comprises the key (8) on main shaft (2), handle at main shaft (2) by handle (5) and go up the jaw clutch cover (24) that slides and the driving wheel (7) of tooth is arranged in the side that main shaft (2) is gone up idle running.