CN2185338Y - Submerged pump without pipe - Google Patents

Abstract

The utility model relates to a submerged pump without pipes. A flow guide chamber is in a circular unenclosed structure. The outer wall of a flow guide shell of a pump body is provided with a circular concave hole in which a circular air pressure sealing air bag is arranged. The air bag can extend out of the sealing well wall of the exterior of the hole after inflation, and can retract into the hole after deflation to remove the sealing function. The utility model adopts a sealing ring to seal, and simultaneously, the sealing ring has sealing and damping functions. The utility model has the advantages of simple structure, good sealing performance, small water head loss, low cost, and flexible mounting and dismounting. The utility model is suitable for fetching water from various wells, and is widely suitable for farm irrigation.

Description

Submerged pump without pipe

The utility model is relevant with agricultural machinery equipment, more precisely about extract phreatic irrigation installation from deep-well.

Common water lift equipment, a kind of be behind the jewel hole from underground suction, another kind is with deep water pump water intaking, the water of being got is sent ground by a pipe, this device loss of head is big, influences the water rate of water pump, and the demolition inconvenience.

The CN2060810U patent provides a kind of no pipe deep-well water delivery apparatus, and the two seals system is housed in submersible, utilizes water pump to extract the pressure of water out, seal tube wall, directly utilizes the water delivery of deep-well pipe, has reduced loss of head, has improved pump capacity.Because the sealed bladder in this device is to utilize hydraulic pressure sealing in the pump housing, its sealability directly is subjected to the influence of water pump water flow pressure.And the sealing intensity of sealed bladder need increase the complexity of device by a series of mechanical regulating controllers adjustings.

The purpose of this utility model is that a kind of improved no pipe submersible pump will be provided, and its sealing configuration is simpler, convenient disassembly, and it can prevent to leak effectively.

Solution of the present utility model is around the pump shaft of the said pump housing center blower inlet casing to be arranged, and forms an annular open type diversion chamber between pump shaft and blower inlet casing.In the upper end of diversion chamber's outer wall an annular concave cave that becomes integral body with it is arranged, the outlet of cave body is lip, and an O-ring seal is housed in the cave.

But an important feature of the present utility model is said O-ring seal is the ring packing rubber bag tank of an elastic telescopic.Said ring packing rubber bag tank is to have double-deck pressure bladder, and it comprises a sealing inner tube of a tyre and a sealing cover tire, and the ring packing inner tube of a tyre is contained in the ring packing cover tire.The structure of cover tire has more withstand voltage wearability than the inner tube of a tyre on intensity, can certainly use the pressure bladder of single layer structure, and the air inlet nozzle of pressure bladder links to each other with inflation source by pipe.The Sealing that constitutes like this, after charging into air in the sealed tire, seal ring expands, and whole seal ring stretches out in the body of cave, is pressed on the well tubular wall, makes pump housing sealing on every side, and whole Sealing can play and seal and damping function.

The utility model is because only need adorn a collar shape air sac sealing circle, so structure is simple especially on the blower inlet casing outer wall.Be conceived to seal ring simultaneously and seal with inner gas pressure, the sealing load between the seal ring and the borehole wall is not influenced by the interior water flow pressure of the pump housing, so avoided the leakage problem of seal ring.

After water pump was shut down, as long as emit gas in the pressure bladder, in the cave, whole submersible pump just can disengage with the borehole wall just the sealing inner tube of a tyre and sealing cover tire are withdrawn automatically, and this submersible pump loads and unloads very convenient.

No pipe diving pump structure in order to illustrate that better the utility model provides is further described by accompanying drawing below.

Fig. 1 represents the sectional view of this device.

The no pipe submersible pump that the utility model proposes, bottom are submersible motors 7, link to each other with the pump housing 3 by connecting body 5.There is an attachment hole 4 to communicate between connecting body and the pump housing.The pump shaft 6 that stretches out from submersible motor passes connecting body and attachment hole enters in the pump housing.Around connecting body is inlet strainer 8, and the impeller 9 on the water pump spindle is in the top of attachment hole, on the top of pump shaft suspension ring 11 is housed, and available lifting rope is suspended on whole submersible pump on the crossbeam.Around the pump shaft blower inlet casing 10 is arranged, between blower inlet casing and pump shaft, form an open type diversion chamber 2.An annular concave cave 1 is arranged in the upper end of blower inlet casing outer wall, but the ring packing air bag of an elastic telescopic is housed in the cave.Said ring packing air bag is made up of the ring packing inner tube of a tyre 13 and ring packing cover tire 12.The suction port of pressure bladder links to each other with inflation source by pipe 14, so just constitutes a complete no pipe submersible pump.

After the sealed tire inflation, pressure bladder expands to stretch out in the cave and presses the borehole wall, seals space around the pump housing, and pump housing well casing is up and down separated.After the submersible motor starting, current enter the pump housing from filter screen through attachment hole, are sent to diversion chamber by impeller, discharge ground from the well casing of pump housing top.After water pump is shut down, emit gas in the sealed tire, pressure bladder is withdrawn in the cave automatically, has removed the seal action of Sealing, and the water in the well casing of pump housing top can be got back to static water level.

The utility model has the advantages that clearly. This no pipe immersible pump is simple in structure, cost is low, loading and unloading are flexible, the loss of flood peak is little, water yield is big. Per hour can take out 80 meters³Water, operating efficiency reach more than 75.6%, and lift is not subjected to the impact of dynamic water level up to 21 meters. This immersible pump is applicable to sandpipe well, iron pipe well, plastics pipe well. The well type bore that is suitable for is the 160-800 millimeter, can extensive use in field irrigation.

Claims (3)

1, a kind of no pipe submersible pump comprises parts such as submersible motor, the pump housing and Sealing, it is characterized in that the said pump housing; The center is a pump shaft, a blower inlet casing is arranged around it, between pump shaft and blower inlet casing, form an annular open type diversion chamber, an annular concave cave that becomes integral body with it is arranged in the upper end of blower inlet casing outer wall, the outlet of cave body is lip, and an O-ring seal is housed in the cave.

2,, but it is characterized in that said seal ring is the ring packing rubber bag tank of an elastic telescopic according to the described no pipe submersible pump of claim 1.

3, according to the described no pipe submersible pump of claim 1, it is characterized in that said ring packing rubber bag tank is to have double-deck pressure bladder, comprise a sealing inner tube of a tyre and a sealing cover tire, the ring packing inner tube of a tyre is contained in the ring packing cover tire, and the suction port of air bag links to each other with inflation source.