CN2746150Y

CN2746150Y - Improved plunger pump

Info

Publication number: CN2746150Y
Application number: CN 200420110943
Authority: CN
Inventors: 陈慧玲
Original assignee: LIANXIANG ELECTROMECHANICAL (SHANGHAI) CO Ltd
Current assignee: Nortek Products (Taicang) Ltd.
Priority date: 2004-11-17
Filing date: 2004-11-17
Publication date: 2005-12-14
Anticipated expiration: 2014-11-17

Abstract

The utility model relates to an improved plunger pump, which comprises a pump body, a pump base, a plunger body, water outlet body and a motor, wherein, the pump body is provided with a low pressure water inlet chamber communicated with a water inlet tube, a high pressure chamber connected with a water outlet body, and an overflow device. The low pressure water inlet chamber is provided with a pressing plate with small holes and a one-way valve with a steel plate. A one-way valve with a steel plate is arranged at the tail end of the high pressure chamber. The plunger body is provided with three plungers which are provided with springs. The pump base is provided with a pinion, a gearwheel, a slope cam and a needle roller thrust bearing and the pinion, the gearwheel, the slope cam and the needle roller thrust bearing are connected to a motor shaft. The gearwheel is engaged with the pinion, the slope cam is arranged at a shaft end of the gearwheel, and the needle roller thrust bearing is arranged on the slope cam to bear the three plungers. The water outlet body is provided with a water outlet tube. The utility model has the advantages of compact structure, space saving, small size, light weight, shortened pipeline route, low water flow resistance, high pump efficiency and low manufacturing cost. Besides, the one-way valve and the high pressure chamber are formed into integration.

Description

The modified model plunger pump

Technical field

The utility model relates to plunger pump, particularly a kind of modified model plunger pump.

Background technique

Existing plunger pump structure is comparatively loaded down with trivial details, its water route distance, and resistance to water-flow is big, and consumed power is also big, and manufacture cost is higher.

Summary of the invention

Task of the present utility model provides a kind of modified model plunger pump, and it has solved the problem that existing plunger pump structure is loaded down with trivial details, resistance to water-flow is big, consumed power is big, manufacture cost is high.

The technical solution of the utility model is as follows:

A kind of modified model plunger pump, it comprises the pump housing, pump-foot, plunger body, water-outlet body and motor, the described pump housing is provided with low pressure water-inlet cavity, the hyperbaric chamber that links to each other with water-outlet body and the overflow mechanism that is communicated with intake pipe, the low pressure water-inlet cavity is equipped with the one-way valve of narrow meshed pressing plate and band steel disc, and the end of hyperbaric chamber is equipped with the one-way valve of band steel disc; Described plunger body is equipped with three plungers, and spring is housed on the plunger; Described pump-foot is equipped with small gear, gearwheel, surface cam and the needle roller thrust bearing that is connected with motor shaft, gearwheel is connected with pinion, surface cam is placed on the gearwheel axle head, and needle roller thrust bearing is placed on the surface cam to support three plungers; Described water-outlet body has outlet pipe.

Modified model plunger pump of the present utility model has shortened whole water route distance on the whole pipe line design, to reduce resistance to water-flow, improve the efficient of pump.Compare with existing plunger pump, the power that this plunger pump is consumed when reaching same pressure and flow is less.This plunger pump is simplified on structural design, is convenient to once-through, has reduced manufacture cost, has reduced about 1/3 than existing pump, has improved the market competitiveness.

Pump body structure compactness of the present utility model, the one-way valve and the hyperbaric chamber of band steel disc combine together, have saved the space greatly, make pump housing volume-diminished, weight saving.Horizontal relief valve adopts high-strength engineering plastic, not only lightly but also inexpensive.The elastic force of relief valve spring is through accurate Calculation and tested correction, makes its X value guarantee that voltage all normally uses in 6% wave range.The low pressure water-inlet cavity of the pump housing adopts the pressing plate mode, and low pressure and high pressure are completely cut off.Pump body structure has been simplified the water seal and the guide sleeve structure of plunger water shutoff, reaches easily manufactured, with low cost, service-strong purpose.

Description of drawings

Accompanying drawing is the structural representation of a kind of modified model plunger pump of the present utility model.

Embodiment

Referring to accompanying drawing, a kind of modified model plunger pump of the present utility model is equipped with the pump housing 1, electrical machinery cover 2, plunger body 3, pump-foot 4, water-outlet body 5 and motor 6.Motor 6 is installed in pump-foot 4 bottoms, and the pump housing 1 is placed on the pump-foot 4.

The pump housing 1 is provided with the low pressure water-inlet cavity 8 and the hyperbaric chamber 9 that links to each other with water-outlet body 5 that is communicated with intake pipe 7.Low pressure water-inlet cavity 8 is equipped with the one-way valve 10 of pressing plate 81 and band steel disc, has aperture 82 on the pressing plate 81.The end of hyperbaric chamber 9 is equipped with the terminal one-way valve 11 of band steel disc.

Plunger body 3 is equipped with three plungers 31, and spring 32 is housed on the plunger 31.

Pump-foot 4 is equipped with small gear 41, gearwheel 42, surface cam 43 and the needle roller thrust bearing 44 that is connected with motor 6 output shafts.Gearwheel 42 is connected with a joggle with small gear 41.Surface cam 43 is placed on gearwheel 42 axle heads.Needle roller thrust bearing 44 is placed on the surface cam 43 to support three plungers 31.

Water-outlet body 5 has outlet pipe 51.Overflow mechanism 12 is housed on the pump housing 1, and overflow mechanism 12 is equipped with overflow spool 121 and overflow valve gap 122.Water-outlet body 5 takes the plane to cooperate with the pump housing 1, and the inclined hole pipeline that is 30 ° reduces the high pressure water resistance greatly, and the plane seal water structure is reliable.Whole water-outlet body 5 is through die cast, needn't machining, and it is with low cost, compact size.

The working procedure of plunger pump of the present utility model is as follows:

Motor 6 is passed to gearwheel 42 to power by small gear 41 with 15000 rev/mins, and gearwheel 42 rotation is rotated together by gear shaft 45 and the surface cam 43 that is positioned at axle head.When surface cam 43 rotates a circle, three plungers 31 move up and down once with cam 43 inclined-planes in succession.Plunger 31 moves upward and is defined as the useful work stroke, and plunger 31 moves downward and is defined as idle work is return stroke.Plunger 31 is to rely on piston spring 32 to finish as idle work.

When intake pipe 7 is connected the water source, the pressure of water must be when 1.5bar～3bar, water is entered by intake pipe 7 in the low pressure water-inlet cavity 8 of the pump housing 1 upper end, and water enters in the hyperbaric chamber 9 of the pump housing 1 through one-way valve 10 simultaneously through three small sircle holes 82 on the low-pressure cavity pressing plate 81.

When plunger 31 is promoted to move upward by surface cam 43, the water that enters in the hyperbaric chamber 9 is subjected to plunger 31 extruding, instantaneous supercharging is flowed to the one-way valve 11 that is positioned at hyperbaric chamber 9 ends rapidly by the pipeline that communicates with hyperbaric chamber 9, this one-way valve 11 is opposite with the installation direction of the one-way valve 10 that is positioned at low pressure water-inlet cavity 8, and water is flowed towards a direction.High pressure water enters water-outlet body 5 through hyperbaric chamber pipeline and one-way valve 11, enters high-voltage tube or hydraulic giant by water-outlet body 5 then, is sprayed by the muzzle shower nozzle at last.

(water of 1.5bar～3bar) becomes the high pressure (process of water of 55bar～60bar) to finish a low pressure thus.

It is as follows that plunger pump of the present utility model is finished the process of closing the rifle overflow:

High pressure water constantly rotates with motor and pump work enters the hydraulic giant ejection from outlet pipe 51, if in case hydraulic giant cuts out, because motor is still rotating, high pressure water is ground warp pipeline input continually still, and one-way valve 11 can only allow water pass through along a direction, it is impossible returning, hydraulic pressure in the outlet pipe 51 can increase rapidly like this, if or else get rid of high pressure water, outlet pipe 51 will explosion, at this moment, the overflow mechanism 12 that is positioned at water-outlet body 5 has just played effect.

When inner pipe water pressure increased, water backed down the conical head of overflow spool 121 by the aperture on the overflow valve gap 122, and this moment, high pressure water by aperture, flowed in the low pressure water-inlet cavity 8 along overflow spool 121 endoporus rapidly.Water advances people's hyperbaric chamber 9 by one-way valve 10 earlier toward low pressure water-inlet cavity 8, water is squeezed into high pressure water by plunger 31, arrive the terminal one-way valve 11 of hyperbaric chamber by the hyperbaric chamber pipeline, enter water-outlet body 5 to outlet pipe 51, blocked by hydraulic giant then, increased pressure, water by aperture on the overflow valve gap 122 and overflow spool 121 hollow tubes, flow into low pressure water-inlet cavity 8 again again.Water has been finished inner loop one time thus.

Claims

1. modified model plunger pump, it comprises the pump housing, pump-foot, plunger body, water-outlet body and motor, it is characterized in that, the described pump housing is provided with low pressure water-inlet cavity, the hyperbaric chamber that links to each other with water-outlet body and the overflow mechanism that is communicated with intake pipe, the low pressure water-inlet cavity is equipped with the one-way valve of narrow meshed pressing plate and band steel disc, and the end of hyperbaric chamber is equipped with the one-way valve of band steel disc; Described plunger body is equipped with three plungers, and spring is housed on the plunger; Described pump-foot is equipped with small gear, gearwheel, surface cam and the needle roller thrust bearing that is connected with motor shaft, gearwheel is connected with pinion, surface cam is placed on the gearwheel axle head, and needle roller thrust bearing is placed on the surface cam to support three plungers; Described water-outlet body has outlet pipe.

2. modified model plunger pump according to claim 1 is characterized in that, described overflow mechanism is equipped with overflow spool and overflow valve gap.