CN104154037A - Heavy sewage pump with support legs - Google Patents

Abstract

The invention relates to a heavy sewage pump with feet, which includes a motor casing, a box cover, a pump cover, a pump body, a motor, an impeller, a float switch and a power cord; the motor is located in the motor casing, and the box cover is airtightly connected to the On the top of the motor casing, the box cover is provided with an outlet and an air nail. The power cord is sealed and fixed in the outlet through a sealing assembly. The pump cover is sleeved and connected to the bottom of the motor casing by screws. The pump body is connected to the pump by screws. On the cover, the bottom of the pump body is provided with a water inlet and one side is provided with a water outlet; the bottom of the motor casing is also provided with two skeleton oil seals, and the bottom of the motor shaft passes through the bearing, skeleton oil seal, motor casing and pump cover in sequence, and extends into the In the pump body, the impeller sleeve is fixed on the bottom end of the motor shaft and located in the pump body, the bottom of the pump body is provided with feet, and the top of the box cover is provided with a handle. The invention can prevent the water inlet from being blocked by silt.

Description

A heavy sewage pump with feet

technical field

The invention relates to a water pump and belongs to the technical field of mechanical equipment.

Background technique

A pump is a machine that transports or pressurizes a liquid. The pump shaft of the prime mover drives the impeller to rotate to do work on the liquid, increasing the energy of the liquid, and relying on this energy to transport the liquid to the designated place. When the water pump is running, the impeller rotates at a high speed in the pump body, and the liquid in the pump body rotates with the impeller. Under the action of centrifugal force, the liquid is thrown out by the impeller at the water outlet, and the speed of the thrown liquid gradually changes in the diffusion chamber of the pump body. Slowly, after the liquid is thrown out, a vacuum low-pressure area is formed at the center of the impeller, and the liquid in the liquid pool flows into the pump through the water inlet under the action of the external atmospheric pressure. The liquid is thus continuously sucked up from the liquid pool and then continuously discharged from the water outlet of the water pump.

In many situations in real life, sewage needs to be transported. Silt is usually accumulated at the bottom of the sewage, and the water inlet of the submersible pump is usually located at the bottom of the pump body, so the water inlet is easily blocked by silt.

Contents of the invention

The present invention aims at the above-mentioned technical problems of the prior art, and proposes a heavy sewage pump with legs provided on the pump body so that the water inlet is not easily blocked.

The technical solution proposed by the present invention to solve the above technical problems is: a heavy sewage pump with feet, including a motor casing, a box cover, a pump cover, a pump body, a motor, an impeller, a float switch and a power cord; the motor is located in the Inside the motor casing, bearings are provided at both ends of the motor casing, the outer ring of the bearing is fixedly connected to the motor casing, the two ends of the motor shaft pass through the bearing and are tightly fitted with the inner ring of the bearing, and the box cover is airtightly connected to the motor casing. On the top of the casing, the box cover is provided with an outlet and an air nail. The power cord is sealed and fixed in the outlet through the power cord sealing assembly. The pump cover is sleeved and connected to the bottom of the motor casing by screws. On the cover, the bottom of the pump body is provided with a water inlet and one side is provided with a water outlet; the bottom of the motor casing is also provided with two skeleton oil seals, and the bottom of the motor shaft passes through the bearing, skeleton oil seal, motor casing and pump cover in sequence, and extends into the In the pump body, the impeller is sleeved and fixed on the bottom end of the motor shaft and located in the pump body, a float switch is provided at the outlet, a foot is provided at the bottom of the pump body, and a handle is provided at the top of the box cover.

The improvement to the above technical solution is: the power cord sealing assembly includes a compression nut, a gasket and a sealing ring; the inner wall of the outlet is provided with an internal thread, the end of the power cord passes through the compression nut and extends into the outlet, and the sealing ring Located between the bottom of the outlet and the end of the power cord, the gasket is located between the end of the power cord and the bottom of the compression nut, and the compression nut is screwed into the outlet to compress and fix the end of the power cord in the outlet.

The improvement to the above technical solution is: the ratio of the height of the impeller to the height of the pump body is 1:3 to 1:2.

The improvement to the above technical solution is: a float switch is provided at the outlet.

The beneficial effect of the invention is that: since the bottom of the pump body is provided with feet, the whole water pump can stand on the mud and keep the pump body away from the mud, so that the water inlet is not blocked by the mud.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing.

Fig. 1 is a structural sectional view of an embodiment of the present invention.

Fig. 2 is a structural diagram of a power cord sealing assembly according to an embodiment of the present invention.

Detailed ways

Example

As shown in Figures 1 and 2, the heavy sewage pump with legs in this embodiment includes a motor casing 15, a box cover 4, a motor 5, an impeller 10, a float switch 6, a pump cover 7, a pump body 9 and a power cord. The motor 5 is located in the motor housing 15, the two ends of the motor housing 15 are provided with bearings 14, the outer ring of the bearing 14 is fixedly connected on the motor housing 15, and the two ends of the motor shaft pass through the bearing 14 and are connected to the inside of the bearing 14. Loop for a tight fit. The box cover 4 is airtightly connected to the top of the motor housing 15 by screws. The box cover 4 is provided with an outlet 16 and an air nail 3, and the power cord 1 is sealed and fixed in the outlet 16 through a sealing assembly. The pump cover 7 is sleeved and fixedly connected to the bottom of the motor housing 15 by screws. The pump body 9 is airtightly connected to the pump cover 7 by screws, the bottom of the pump body 9 is provided with a water inlet 12, and one side is provided with a water outlet 8; the bottom of the motor casing is also provided with two skeleton oil seals 13, and the bottom of the motor shaft is passed through in turn. Through the bearing 14, skeleton oil seal 13, motor casing 15 and pump cover 7, it extends into the pump body 9, and the impeller 10 is sleeved and fixed on the bottom end of the motor shaft and is located in the pump body 9. The height of the impeller 10 is the same as that of the pump body 9. The ratio is 1:3 to 1:2. The bottom of the pump body 9 is also provided with a leg 11, and the top of the lid is also provided with a handle 2. The power cord sealing assembly includes a compression nut 19 , a gasket 18 and a sealing ring 17 . The inner wall of the outlet 16 is provided with internal threads, the end of the power cord 1 passes through the compression nut 19 and extends into the outlet 16, the sealing ring 17 is located between the bottom of the outlet 16 and the end of the power cord 1, and the gasket 18 is located on the power cord 1. Between the end of the line 1 and the bottom of the compression nut 19. The compression nut 19 is screwed into the wire outlet 16 , thereby compressing and fixing the end of the power cord 1 in the wire outlet 16 . The outlet port 16 is also provided with a float switch 6'.

When the present embodiment is in use, after the motor 5 is energized and running, the impeller 10 rotates to drive water into the pump body 9 from the water inlet 12, and the impeller 10 works to discharge the water through the water outlet 8. When the water level changes, the float switch 6 will generate an electrical signal to control the motor 5 to run or stop.

The present invention is not limited to the above-mentioned embodiments, and any technical solution formed by equivalent replacement falls within the scope of protection required by the present invention.

Claims (3)

1. with a heavy sewage pump for leg, it is characterized in that: comprise motor casing, lid, pump cover, the pump housing, motor, impeller, switch and power line; Described motor is positioned at described motor casing, the two ends of described motor casing are provided with bearing, the outer ring of described bearing is fixedly connected on motor casing, the two ends of motor shaft through bearing and with the inner ring drive fit of bearing, the airtight top that is connected to motor casing of described lid, described lid is provided with wire outlet and air nail, described power line is fixed in wire outlet by power line black box is airtight, described pump cover is sheathed and by screw, be fixedly connected on the bottom of motor casing, the described pump housing is airtight to be connected on pump cover, and described pump housing bottom is provided with water intake one side and is provided with water outlet; The bottom of described motor casing is also provided with two outside framework oil seals, motor shaft bottom is successively through bearing, outside framework oil seal, motor casing and pump cover, stretch in the pump housing, described impeller is sheathed to be fixed on motor shaft bottom and to be positioned at the pump housing, described pump housing bottom is also provided with leg, and described lid top is also provided with carrying handle.

2. according to claim 1 with the heavy sewage pump of leg, it is characterized in that: described power line black box comprises gland nut, pad and seal ring; Described wire outlet inwall is provided with internal thread, the end of described power line is stretched in wire outlet through gland nut, described seal ring is between wire outlet bottom and power line end, described pad is between power line end and the bottom of gland nut, described gland nut screws in wire outlet, thereby power line end is pressed abd fixed in wire outlet.

3. according to claim 1 with the heavy sewage pump of leg, it is characterized in that: described wire outlet place is provided with switch.