CN2415179Y

CN2415179Y - Self-priming pump

Info

Publication number: CN2415179Y
Application number: CN 00203508
Authority: CN
Inventors: 杜兴喜
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-02-03
Filing date: 2000-02-03
Publication date: 2001-01-17
Anticipated expiration: 2010-02-03

Abstract

The utility model relates to a self suction pump, which mainly solves the problems of unreliable performance, inconvenient use or high cost, multiple easy damaged parts, etc. in existing self suction pumps. The utility model is characterized in that an automatic water stopping device and a lifting valve are arranged above a pump body; the automatic water stopping device and an air inlet pipe of an internal combustion engine are communicated by an air suction pipe and a tee joint with a valve. The utility model has the advantages of reliable self suction performance, force saving, convenience, few easy damaged parts, and low cost.

Description

Self-priming pump

The utility model is to the improvement of existing self-priming water pump, belongs to a kind of farm machinery.

Domestic existing self-priming water pump divides two kinds at present.A kind of is that depression bar piston type suction engine and water pump are formed one.Use the depression bar driven plunger repeatedly by manpower earlier when drawing water,, will be evacuated in the pump housing, and after making it be full of water under the barometric pressure effect, drive water pump by mating power again water is extracted out through repeatedly to-and-fro motion.Characteristics such as it is simple in structure that though this scheme has, easy to operate, owing to could realize by the manpower repeated multiple times long period, then difficulty is bigger for the water pump of and big specification poor slightly to sealing.Another kind is that vacuum pump and water pump are formed one, during extraction earlier with vacuum pump with after being evacuated in the water pump and then being full of water, drive pump working by mating power again water extracted out.Though this scheme has characteristics such as laborsaving convenience, because of its complex structure, reasons such as cost height make the user be difficult to accept.

The purpose of this utility model is to avoiding the deficiency of prior art, and a kind of self-priming pump is provided, and reliable performance, laborsaving convenience, few easy workout part, cost are low.

To achieve these goals, the utility model has been taked following technical measures.Self-priming pump, advance by being installed in pump housing blade wheel chamber, automatic water blocking device assembly and lift valve assembly on the outlet pipe, valve tee and sucking pipe, the pump housing and intake pipe are formed, automatically the water blocking device assembly is positioned at pump housing blade wheel chamber inlet tube top and communicates with it, the lift valve assembly is positioned at pump housing blade wheel chamber outlet pipe top and communicates with it, the valve end of valve tee and the corresponding with it the other end are connected in series with in the air intake circuits in internal combustion engines jointly, the 3rd end is connected with automatic water blocking device assembly by suction line, the self-priming pump intake pipe links to each other with pump housing blade wheel chamber intake pipe, and the self-priming pump outlet pipe links to each other with the lift valve cavity.

For further specifying characteristics of the present utility model,, described in detail below in conjunction with Fig. 1, Fig. 2, Fig. 3 and embodiment shown in Figure 4.

Fig. 1 is the utility model structural representation;

Among the figure: 1 automatic water blocking device assembly 2 outer pipes 3 sucking pipes 4 air-strainer 5 valves 6 valve tees 7 suction tude 8 intake pipes 9 pump housing blade wheel chamber intake pipes 10 pump housings 11 pump housing blade wheel chamber outlet pipes 12 outlet pipes 13 lift valve assemblies.

Fig. 2 and Fig. 3 are the structural representation of two kinds of automatic water blocking device assemblies of the present utility model (1);

Among the figure: 1 automatic water blocking device assembly 2 outer pipes 14 cavitys 15 conduits 16 float 17 bases 18 cocks of water drain 19 valve blocks 20 catch.

Fig. 4 is the structural representation of lift valve assembly of the present utility model (13);

Among the figure: 13 lift valve assemblies, 21 valve blocks, 22 valve pockets, 23 valve gap 24 valve rods 10 pump housings 11 pump housing blade wheel chamber outlet pipe 12 outlet pipes with holes.

See Fig. 1-4, concrete structure of the present utility model is as follows: self-priming pump is made up of automatic water blocking device assembly (1), lift valve assembly (13), suction line (3), valve tee (6) and the pump housing (10) and inlet pipeline (8).Automatically water blocking device assembly (1) is positioned at blade wheel chamber's inlet tube (9) top, and it is made up of outer pipe (2), base (17), cavity (14), conduit (15) float (16), catch (20), valve block (19) and cock of water drain (or screw and nut) (18).The sealing surface on outer pipe (2) lower seal face and float (16) top constitutes the even part of a secondary sealing; Base communicates with the blade wheel chamber intake pipe, its import top seal face constitutes the even part of a secondary sealing with the sealing surface of valve block (19) (or float (16) bottom), conduit has the hole on (15), so that gas, liquid pass through, float (16) can move up and down along its central axis in conduit (15).Lift valve assembly (13) is positioned at blade wheel chamber's outlet pipe (11) top, and it is by valve block (21), valve rod (24), valve gap with holes (23), and valve pocket (22) and outlet pipe (12) are formed.The sealing surface of valve pocket bottom and valve block (21) lower seal face are formed the even part of a secondary sealing, and sealing surface and valve block (22) top seal face are formed the even part of a secondary sealing around the bottom, hole of valve gap (23).Valve rod (24) can slide up and down in the hole of valve gap (23).Before the use, valve (5) one ends of valve tee (6) are connected with combustion air cleaner (4), and the other end is connected with intake lines of combustion engines (7), and the 3rd end is connected with sucking pipe (3).

Working procedure of the present utility model is as follows:

When starting apparatus combustion engine drive self-priming pump has just put into operation, lifting valve block (21) is in the valve pocket bottom makes lift valve assembly (13) be in closed state, this moment throttle down (5), allow the interior air of the inlet pipeline (8) and the pump housing (10) be sucked into internal-combustion engine by water blocking device assembly (1) and sucking pipe (3), make and form the negative-pressure vacuum state in the inlet pipeline (8) and the pump housing (10), under the external atmosphere pressure effect, water is promoted gradually to be entered in the pump housing (10) and the automatic water blocking device assembly (1), along with the water level in the automatic water blocking device assembly (1) raises gradually, buoyancy of water forces float (16) to rise outer pipe (2) is sealed, guarantee that liquid can not enter outer pipe (2), thereby make internal-combustion engine can not break down or damage because of scurrying into of water.At this moment Open valve (5) is adjusted internal-combustion engine rotational speed and is made self-priming pump water be extracted out and lift valve assembly (13) is opened, and water is sent to outside the pump by outlet pipe (12).Meanwhile, the one, valve block (21) is raised to peak will cover the hole sealing; The 2nd, valve block (19) (or float 16) descends along with the drawdown in the assembly that blocks water automatically (1) till the import sealing with base (17), thereby guarantees the self-priming pump proper functioning.

Claims

1, a kind of self-priming pump is made up of automatic water blocking device assembly (1), lift valve assembly (13), sucking pipe (3), valve tee (6) and the pump housing (10) and intake pipe (8), automatically water blocking device assembly (1) is connected in the pump housing (10) top, automatically water blocking device assembly (1) includes cavity (14), base (17), outer pipe (2), conduit (15), float (16), cock of water drain (18), valve block (19) and catch (20) formation, it is characterized in that:

Cavity (14) top also is provided with outer pipe (2), outer pipe (2) lower end also is fixed with conduit (15), conduit (15) side is provided with the hole, its inside is provided with float (16), its bottom also is provided with catch (20), base (17) is provided with inlet seal face and cock of water drain (18), the inlet seal face of the sealing surface of valve block (19) and base (17) is formed the even part of a secondary sealing, and the sealing surface that sealing surface that float (16) top is provided with and outer pipe (2) bottom are provided with is formed the even part of another secondary sealing.

2, automatic water blocking device assembly according to claim 1 (1), cock of water drain wherein (18), valve block (19) and catch (20) save, conduit (15) both ends or one end are limited to the import top of outer pipe (2) bottom and base (17) respectively, two sealing surfaces that float (16) two ends are provided with are respectively formed the even part of two secondary sealings with two sealing surfaces that the import top and outer pipe (2) bottom of base (17) is provided with respectively.

3, claim 1 and 2 described self-priming pumps, it is characterized in that entering in the process of automatic water blocking device assembly (1) when water, in the 0-100 mm distance, the suffered buoyancy of float (6) is more than or equal to himself weight in float (6) upper end and outer pipe (2) lower end.