CN2233474Y

CN2233474Y - Multi-functional automatic screw pump

Info

Publication number: CN2233474Y
Application number: CN 95219918
Authority: CN
Inventors: 赵家铱; 赵声扬; 赵鼎
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-18
Filing date: 1995-08-18
Publication date: 1996-08-21
Anticipated expiration: 2005-08-18

Abstract

The utility model relates to a multifunctional automatic screw pump, belonging to a self suction clean water pump. The multifunctional automatic screw pump is composed of a pump body, a screw, a screw sleeve, a water inlet chamber, and a water outlet chamber. A return passage is arranged between the water inlet chamber and the water outlet chamber. A return valve is arranged on the return passage. A perspective window is arranged on the tower part of the water inlet chamber. The multifunctional automatic screw pump has simple structure, easy fabrication, material saving, high machine set efficiency, and long service life. When a pump and a machine are in integral connecting shaft transmission, the multifunctional automatic screw pump can fully automatically work, and the purposes of the multifunctional automatic screw pump are wide.

Description

Multi-functional automatic screw pump

The utility model relates to the automatic screw pump of a kind of many kinetic energy, belongs to a kind of self-priming clean waterpump.

Screw pump is little owing to its body moves, and pressure is big, and suction is strong, and the efficient height is widely used in sprinkling irrigation, and spraying is cleaned, pipe pressurizing, aspects such as high-order water supply.But screw pump is because its specified structure, therefore fatal defective-----anhydrous arranged also or water quality is unclean, and particularly having works under the grains of sand situation will cause the very quick-wearing and the damage of screw rod and screw rod cover, has had a strong impact on working life.

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of multi-functional automatic screw pump that can effectively prevent the wearing and tearing of screw rod and screw rod cover is provided.

Multi-functional automatic screw pump of the present utility model, form by the pump housing, screw rod, screw rod cover, intake chamber, water-supplying chamber, for overcoming the shortcoming on the self-priming screw pump prior art, structural feature at the self-priming screw pump, for solving the problem of between self-priming exhaust phase screw rod and screw rod cover, wearing and tearing and destroying owing to anhydrous film lubrication, be equipped with or be shaped on return flow line or loop pipe between intake chamber and the water-supplying chamber, on return flow line or the loop pipe reflux valve is housed;

For overcoming the problem that contains more sand grains in the water into, dress filter bowl or filter bag in the tower portion of above-mentioned intake chamber further, for observing the situation of gathering of sand grains, can be adorned transparent window on the tower wall simultaneously.

Multi-functional automatic screw pump of the present utility model, simple in structure, easy to manufacture, save with material, the unit efficiency height, long working life, easy to use during the transmission of pump machine one connecting shaft, but fully automatic working, purposes is very extensive.

For introducing multi-functional automatic screw pump of the present utility model in detail, be elaborated below in conjunction with accompanying drawing:

Fig. 1 is the sectional structure schematic representation of multi-functional automatic screw pump of the present utility model;

Fig. 2 is the structure diagram of the reflux valve installed between intake chamber and water-supplying chamber.

Referring to Fig. 1, multi-functional automatic screw pump of the present utility model is made up of the pump housing 1, screw rod 2, screw rod cover 3, intake chamber 10, water-supplying chamber 20, it is characterized in that being equipped with or being shaped on return flow line or loop pipe 30 between intake chamber 10 and the water-supplying chamber 20, on return flow line or the loop pipe 30 reflux valve 31 is housed; This reflux valve 31 is opened during for a kind of low pressure, the valve of closing during increased pressure, and concrete theory structure can be referring to the explanation below in conjunction with Fig. 2; This reflux valve has been arranged, at water pump start self-priming exhaust phase, valve is being opened automatically during low pressure, make the partially liq medium back flow in the water-supplying chamber arrive intake chamber, constantly the position of make-up pump body fluid body medium is high, therefore solved at the self-priming exhaust phase and do not entered the pump housing because of there being extraneous liquid medium, the medium position high when not enough between screw rod due to the screw rod face and the screw rod cover part dry grinding turn round, having guaranteed has the liquid medium film to exist all the time between screw rod and the screw rod cover and lubricates, make screw rod and screw rod overlap the running of can not dry grinding, avoid the wearing and tearing and the damage of screw rod and screw rod cover oneself, increased the working life of pump.But after finishing from suction and discharge, water-supplying chamber's medium pressure liquid rises rapidly immediately, in case water-supplying chamber's medium pressure liquid increases.This reflux valve that smokes certainly cuts out at once, return line is stifled disconnected, make the liquid medium in the water-supplying chamber from return line, be back to the pump housing, solved other various self-priming pump return lines and connected without hindrance all the time and discharge pressure that cause descends and problem such as water-outlet quantity minimizing, improved pump efficiency.

The single line structural drawing of the reflux valve 31 of this structure has been shown among Fig. 2, its principle is to utilize the valve block 32 of two different cross-sectional, 32 ' come the whole passage of switch in water-supplying chamber's connecting end 33 and the asynchronous position of intake chamber connecting end 34 pairing pressure from water-supplying chamber to intake chamber, in Fig. 2, the another side of valve block 32 is communicated with atmosphere by connecting port 35, be equipped with a spring on the valve block 32, when the pressure of water-supplying chamber hangs down, valve block 32,32 ' between pressure also low, this pressure acts on big valve block and makes it under the pressure difference effect that thrust to left movement is not enough to offset little valve block 32 ' at this pressure and intake chamber to the right active force and spring force, thus little valve block 32 ' be in shown position, make connecting tube 36 open-minded, on the contrary, after pressure increased, big or small valve block blocked connecting tube 36 to left movement, and return flow line 30 is closed; The position being set and structurally all can under above-mentioned thinking, doing suitable change of size structural type of valve block and connecting tube.

For enter screw rod and screw rod the cover before to water in impurity, particularly sand grains carries out filtration treatment, not frayed to guarantee screw rod and screw rod cover, filter bowl or filter bag 12 are housed in the tower portion 11 of intake chamber 10, be used to gather impurity and sand grains, and for the situation of gathering of clear view sand grains etc., on the tower wall 11 of intake chamber 10, transparent window 12 is housed, transparent window 12 can adopt plexiglass or the good plastics of the transparency to make, and adopts the structure of filter bowl or filter bag, for the impurity resemble the grains of sand, only need open the top cover of tower portion, what taking-up filter bowl or filter bag fell gets final product, very convenient during use, can guarantee unimpeded and enough inflows of inlet pipeline again effectively.。

In using, the start of this water pump frequently closes outlet valve; for example cleaning process or metal decontamination; the rust cleaning operation; because of closing flowing water Valve; the pressure of water-supplying chamber 20 is superpressure immediately, as not shutting down, and then motor overload operation; even because the peak torque balance of the reaction force of superpressure liquid medium and motor and stall, shut down then motor frequent shutdown and startup.Both have all wasted the energy, and have a strong impact on the working life of motor, for overcoming above-mentioned problem, between intake chamber 10 and water-supplying chamber 20, be equipped with or be shaped on a release runner 40, unloading valve 41 is housed on the release runner 40, and this unloading valve is a kind of valve that certain pressure is just opened that reaches, for this technical field of hydraulic machine, this unloading valve is a technique known, so in this illustration not; And after automatic control superpressure unloading valve had been installed, in case when water-supplying chamber's superpressure, valve was opened automatically, made water-supplying chamber 20 and intake chamber 10 reach the part perforation, thereby had avoided overburden operation or the stall or the frequent starting of motor, had prolonged the working life of motor.

Further, can in water-supplying chamber 20, can adorn check valve 21, it can be ball valve or other have the valve of recloser characteristic, and the collaborative check valve effects of pressure automatic switch 22 can and stop according to the startup that relatively comes the robot brain pump of the pressure of water outlet and the artificial pressure spot of setting.Check valve and can stop air to enter the pump housing from rising pipe has avoided the liquid medium in the inlet pipeline to fall after rise.Thereby making does not have gas and need arrange when starting shooting once more, and water outlet immediately.

For screw pump of the present utility model, usually make the structure of motor shown in Figure 1 and water pump one, this moment, the screw rod 2 of this water pump linked to each other with the output shaft 51 of motor 50 by shaft coupling or universal joint 25, for with the situation as power source such as diesel engine, 2 of the screw rods of this water pump pass through shaft coupling or universal joint connects belt pulley or gear, because this respective outer side edges belongs to the prior art of field of mechanical technique, so this structure is not shown on figure.

For motor-and-pump integrated structure, motor 50 shown in Figure 1 comprises earth stud 51, fan housing 52; fan 53, rear end cover 54, bearing 55; rotor 56; motor stator 57, capacitor 58, terminal box 59; motor heat protector 60; two-way switch 61, motor casing 62, two-way switch are provided with automatically and are manual.

This pump is the rotator type screw pump, its workpiece is eccentric single head heliconid, and----screw rod 2 is made the axial row luck in elasticity twin-feed spiral cavity----screw rod cover 3 change, take this to produce continuously, the sealed volume that at the uniform velocity advances, liquid medium in the part pump housing is pushed to water-supplying chamber 20 from intake chamber 10, thus supercharging.As long as advance, there is liquid medium in the water-supplying chamber, when screw rod turned round in the screw rod cover, the surface of contact between screw rod and the screw rod cover produced liquid film, and occluded air refluxes, thereby takes out the air of most intake chamber and inlet pipeline, produces suction.Reach the effect of self-priming, the degree of vacuum of generation can reach 750, is much better than the self-priming pump of other types.

The outlet pipe of water-supplying chamber 27 connect 26 can with the sprinkling irrigation shower nozzle, spraying nozzle, style fountain shower nozzle, cleaning spray gun or supply channel are connected, and when connecting the sprinkling irrigation shower nozzle, are the mobile high-voltage sprinkling pump, be applicable to fruit tree and vegetable, gardens, nursery and the sprinkling irrigation of various crop overhead irrigation formula.When connecting spraying nozzle, be high-pressure spray pump, be applicable to various crops control worm spraying and foliage fertilization is sprayed, when connecting cleaning spray gun.Be the high-pressure cold water washery pump, be applicable to metal decontamination rust cleaning, vehicle, wall, the high-pressure wash in place.Be raw water service pump when connecting supply channel (and pressure switch), be applicable to enterprises and institutions or village, tap water does in family, need not to build the pond water tower.

Be convenient above-mentioned variety of applications,, the filtration tank of intake chamber is designed to flexibly connect with the pump housing, and promptly tower portion 11 can make the structure of the rotation of 360 degree scopes on the pump housing 1.

The pressure automatic switch 22 of pacifying in the water-supplying chamber 20 of pump can be used to according to the startup that relatively comes the robot brain pump of the pressure of water outlet and the artificial pressure spot of setting and stops.

The downstream that above-mentioned automatic control superpressure unloading valve 41 and pressure automatic switch 22 can be in check valve 21, also can be in its upstream, but 31 upstreams that are positioned at check valve 21 of self-priming reflux valve, pressure automatic switch 22 links to each other with the control circuit of motor 50 or motor, and the concrete structure of switch can be with reference to introduction of the prior art.

Claims

1, a kind of multi-functional automatic screw pump is made up of the pump housing, screw rod, screw rod cover, intake chamber, water-supplying chamber, it is characterized in that between intake chamber and the water-supplying chamber return flow line being arranged, and reflux valve is housed on the return flow line; And a release runner is arranged between intake chamber and water-supplying chamber, on the release runner unloading valve is housed; In the tower portion of intake chamber filter bowl is housed, Ta Bishang is equipped with transparent window.

2, multi-functional automatic screw pump according to claim 1 is characterized in that in the above-mentioned water-supplying chamber check valve being housed.

3, multi-functional automatic screw pump according to claim 1 is characterized in that above-mentioned screw rod links to each other with motor output shaft by shaft coupling.

4, multi-functional automatic screw pump according to claim 1 is characterized in that above-mentioned screw rod connects belt pulley by shaft coupling.

5, multi-functional automatic screw pump according to claim 1 is characterized in that the water outlet of above-mentioned water-supplying chamber links to each other with sprinkler head.

6, multi-functional automatic screw pump according to claim 1 is characterized in that above-mentioned screw rod is a single-head screw.

7, multi-functional automatic screw pump according to claim 1 is characterized in that the tower portion of above-mentioned intake chamber is movably connected on the pump housing.