CN2526547Y

CN2526547Y - Vertical leakless self-priming pump

Info

Publication number: CN2526547Y
Application number: CN 01277524
Authority: CN
Inventors: 於毂珍; 刘焕安; 张元利
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-28
Filing date: 2001-12-28
Publication date: 2002-12-18
Anticipated expiration: 2011-12-28

Abstract

The utility model relates to a vertical no-leakage self-suction pump, consisting of a suction pipe, a pump cover, an impeller, a pumping chamber, a pump body, a pump shell, a disgorging bent pipe, a bearing seat, a motor seat, a motor, a pump shaft, etc. The pump shaft is vertically arranged; one end of the pump shaft is connected with the motor shaft; the bottom of the pump shell is provided with a hole communicated with the suction pipe; the pump body is assembled as a whole with the pump cover; taken as the center, the pump shaft is inserted into the pump shell sequentially with the pump body and the pump cover from top to bottom, forming a water inlet chamber with the bottom of the pump shell; the pump body is internally provided with a pumping chamber, a water storage chamber and a gas/liquid separating chamber; wherein, the water storage chamber and the gas/liquid separating chamber are arranged on the pumping chamber which is horizontally arranged; the water storage chamber is communicated with a water inlet chamber by a water inlet; the bottom of the gas/liquid separating chamber is communicated with the pumping chamber by a water outlet; the top reaches a disgorging bent pipe; the other end of the pump shaft passes through the water storage chamber to the impeller fixedly arranged with the end; an impeller outlet is arranged in the pumping chamber; an inlet of the impeller faces to the water storage chamber. The utility model has the advantages of vertical type, self-suction, no leakage, anti-wear, anti-corrosion, convenient maintenance and low cost.

Description

Vertical non-leakage leaks self-priming pump

Technical field

The utility model relates to the self-priming pump field, is specially a kind of vertical non-leakage and leaks self-priming pump.

Background technique

The Under Water Pumps that uses both at home and abroad is that pump is soaked under liquid level at present, and motor is stayed on the liquid level, connect to come transmitting torque with the long axle that is contained in the sleeve pipe with motor, with the outlet pipe of equivalent length the water of discharging is delivered on the ground again, the advantage of this kind pump is: 1) integral body of pump places certain depth under water, all the time filled with liquid in the cavity of pump need not to pour water when starting, and is more convenient in the use; 2) its pump housing places under the liquid, and motor is on liquid level, and both are coaxial, and it does not occupy bigger space, its deficiency is: 1) degree of depth of its pump under liquid is restricted, generally in 3 meters, mainly be to beat because of joining shaft easily causes when long, revolution is high more, it is just big more then to beat, liquid properties of journal bearing lubricated serious wear can directly influence the work of pump, the repair rate height; 2) the pump body is long, keeps in repair very inconvenient; 3) the manufacture cost height of this pump, the support tube and the bend pipe structure heaviness that spues, high material consumption, especially anti-corrosive pump are many because of the big consumptive material of length, must raise the cost significantly.

In addition, vertical centrifugal pump is because of possessing self-absorption function, all must fluid injection in pump before each the startup, not only time-consuming but also effort is leaked easily, if the medium that this pump is carried is poisonous or strong corrosion arranged, then this operation has very big difficulty and dangerous, brings great trouble to the user.

Summary of the invention

The purpose of this utility model provide a kind of easy to maintenance, cost is low, performance is more excellent, the vertical non-leakage of wear resistant corrosion resistant leaks self-priming pump.

The technical solution of the utility model is: by suction pipe, pump cover, impeller, pumping chamber, the pump housing, pump case, bend pipe spues, bearing support, motor cabinet, motor, pump shaft is formed, motor wherein, motor cabinet, bearing support, the pump housing is by the vertical successively from top to bottom structure that is installed in series of pump shaft, described pump shaft vertically is provided with, the one end links to each other with motor shaft, described pump case is a bowl-type, its bottom porosely is communicated with suction pipe, the described pump housing and pump cover are assembled into one, with the pump shaft is the center, press the pump housing, pump cover order up and down is plugged in pump case, form water-inlet cavity with the pump case bottom, establish pumping chamber in the pump housing, water chamber, gas-liquid separation chamber, water chamber wherein, gas-liquid separation chamber is on the pumping chamber of horizontal positioned, described water chamber top is provided with water irrigating hole, the bottom communicates with water-inlet cavity through water intake, described gas-liquid separation chamber bottom communicates with pumping chamber through water outlet, its top is to the bend pipe that spues, the described pump shaft the other end passes water chamber to the impeller that installs with its termination, impeller outlet places pumping chamber, and impeller inlet is towards water chamber.

The beneficial effects of the utility model are:

1. vertical, self-priming, nothing are leaked.The utility model pump shaft is vertically placed, the one end links to each other with motor shaft, successively through motor cabinet, bearing support, its the other end installs the pumping chamber that impeller places the pump housing, impeller inlet is towards water chamber, impeller needn't be submerged under the liquid as Under Water Pumps, so axle body is short, has fully phased out sliding bearing and the heavy support tube and the bend pipe that spues under the liquid, volume is little, in light weight, it is reliable to operate steadily, and because water chamber has liquid, under impeller action, liquid is transported to gas-liquid separation chamber, forms negative pressure, thereby have good self-absorption function and do not have leakage.

2. wear-resisting, corrosion-resistant.The utility model is according to fed sheet of a media and working condition requirement, can select the F series special stainless steel and the corrosion resistant alloy of Metal Corrosion and Protection Inst., Chinese Academy of Sciences's development for use, as FQ-1, FS-1, F518, F5, Fcr30, F294, F5N etc., be applicable to industries such as sulfuric acid industry, chemical fertilizer industry, chemical fibre industry, nonferrous metallurgy, pharmacy, be used for carrying and contain the liquid that are corrosive such as acid, alkali, salt.

3. easy to maintenance, cost is low.The support tube that the utility model cancellation Under Water Pumps is heavy and the bend pipe that spues, cost is low; And, needn't move pump case and suction line during maintenance because the utility model axle body is short, only need the pump housing, rotor portion extracted out in the pump case and get final product.

Description of drawings

Fig. 1 is the utility model structural representation.

Embodiment

Be described in further detail the utility model below by present embodiment and accompanying drawing.

As shown in Figure 1, mainly by suction pipe 1, pump cover 2, impeller 3, pumping chamber 4, the pump housing 5, pump case 6, bend pipe 7 spues, bearing support 8, motor cabinet 9, motor 10, pump shaft 12 is formed, wherein motor 10, motor cabinet 9, bearing support 8, the pump housing 5 is by the vertical successively from top to bottom structure that is installed in series of pump shaft 12, described pump shaft 12 vertically is provided with, the one end links to each other with the axle of motor 10, described pump case 6 is a bowl-type, its bottom is porose to be communicated as one with suction pipe 1, the described pump housing 5 and pump cover 2 are assembled into one, with pump shaft 12 is the center, press the pump housing 5, pump cover 2 order up and down is plugged in pump case 6, form water-inlet cavity 16 with pump case 6 bottoms, establish pumping chamber 4 in the pump housing 5, water chamber 14, gas-liquid separation chamber 18, wherein water chamber 14, gas-liquid separation chamber 18 is on the pumping chamber 4 of horizontal positioned, described water chamber 14 tops are provided with water irrigating hole 11, communicate with water-inlet cavity 16 through water intake 15, described gas-liquid separation chamber 18 bottoms communicate with pumping chamber 4 through water outlet 17, its top is to the bend pipe 7 that spues, described pump shaft 12 the other ends pass water chamber 14 to the impeller 3 that installs with its termination, impeller 3 outlets place pumping chamber 4, and impeller 3 imports are towards water chamber 14.During installation, pump is vertically sling, inserted in the preprepared substrate aperture, with bolt that pump case 6 outer round flanges and substrate handle are tight, the bend pipe 7 that spues is installed then.

Present embodiment flow Q=50m3/h, lift H=20m, rotating speed are 2950r/min, maximum self-priming height h=4m, self-priming time t=150s;

Working procedure of the present utility model is:

1. prestarting preparation

1) check turning to of motor, make its with pump on turn to the board arrow to conform to.

2) must in pump chamber, irritate liquid (being pumped medium) before the first start, liquid be filled by water chamber 14, gas-liquid separation chamber 18, when restarting later on, needn't irritate liquid by water irrigating hole 11, but across-the-line starting.

2. starting

1) owing to have liquid in the water chamber 14, under impeller 3 effects, liquid is transported to gas-liquid separation chamber 18, forms negative pressure in impeller 5 imports and the water chamber 14 like this, guaranteed not have in the pump operation and leaked; In addition, gas-liquid separation chamber's 18 volumes are enough big, the flow rate of liquid that enters gas-liquid separation chamber 18 reduces, gas, liquid are separated, and with discharge valve crack (being convenient to gas in the excavationg pump), gas is discharged through the bend pipe 7 that spues, partially liq is got back to impeller 3 outer rims through return port 13, so constantly circulation, till the gas emptying in suction pipe 1, at this moment pump has just been finished the self-priming process;

2) behind the actuating motor, note observing the pressure gauge on the pipeline that spues, when pressure begins to rise, illustrate that gas is discharged in the pump, pump has been finished the self-priming process, and can slowly open discharge valve this moment, is adjusted to the operating point that needs.

3. shut down

1) close discharge valve before the shutdown, after the shutdown, the medium in the pipeline flows back in the media slot via suction pipe 1, can be filled with medium in the pump chamber simultaneously, when starting once more, needn't irritate liquid, can directly start operation;

2) if dead time is longer, liquid freezes or sinks knot etc. in the pump in order to avoid, should be with liquid emptying in the pump.

Technical parameter of the present utility model is:

Flow Q=10～1400m ³/ h, lift H=10～50m, self-priming height h=3～6m, self-priming time t=60～200s;

The clockwise direction rotation is seen in turning to from motor side of the utility model pump, and the axle envelope adopts packing seal or mechanical seal; The utility model has kept the nothing of Under Water Pumps to leak and can directly start two big advantages, and axle body length, liquid properties of journal bearing lubricated serious wear, the life-span that has thoroughly overcome Under Water Pumps lacks, bend pipe and shortcomings such as support tube structure heaviness, high material consumption spue.

Claims

1. a vertical non-leakage leaks self-priming pump, by suction pipe (1), pump cover (2), impeller (3), pumping chamber (4), the pump housing (5), pump case (6), bend pipe (7) spues, bearing support (8), motor cabinet (9), motor (10), pump shaft (12) is formed, motor (10) wherein, motor cabinet (9), bearing support (8), the pump housing (5) is by the vertical successively from top to bottom structure that is installed in series of pump shaft (12), described pump shaft (12) is vertical to be provided with, the one end links to each other with the axle of motor (10), described pump case (6) is a bowl-type, its bottom is porose to be communicated as one with suction pipe (1), it is characterized in that: the described pump housing (5) and pump cover (2) are assembled into one, with pump shaft (12) is the center, press the pump housing (5), pump cover (2) order up and down is plugged in pump case (6), form water-inlet cavity (16) with pump case (6) bottom, establish pumping chamber (4) in the pump housing (5), water chamber (14), gas-liquid separation chamber (18), water chamber (14) wherein, gas-liquid separation chamber (18) is on the pumping chamber (4) of horizontal positioned, described water chamber (14) top is provided with water irrigating hole (11), the bottom communicates with water-inlet cavity (16) through water intake (15), described gas-liquid separation chamber (18) bottom communicates with pumping chamber (4) through water outlet (17), its top is to the bend pipe that spues (7), described pump shaft (12) the other end passes water chamber (14) to the impeller (3) that installs with its termination, impeller (3) outlet places pumping chamber (4), and impeller (3) import is towards water chamber (14).