CN2797693Y

CN2797693Y - Intelligent control valve for wter pump

Info

Publication number: CN2797693Y
Application number: CN 200520050509
Authority: CN
Inventors: 张国衡; 周小芳; 张磊; 杨亚朋
Original assignee: SHANHE VALVE INDUSTRY Co Ltd HU-NAN
Current assignee: SHANHE VALVE INDUSTRY Co Ltd HU-NAN
Priority date: 2005-03-18
Filing date: 2005-03-18
Publication date: 2006-07-19
Anticipated expiration: 2015-03-18

Abstract

The utility model discloses an intelligent control valve for a water pump, which is characterized in that a sealing piston chamber (5) is formed between a valve rod support plate (7) and a valve body (1), liquid is infused in the sealing piston chamber (5), a big partition plate (8) is arranged on one end of a valve rod (2), and a piston (3) is arranged on the other end; a first control valve (14) and a first one way valve (13) are arranged on a first connecting pipe (10), an upper working chamber (4) is communicated with a lower working chamber (6) via the first connecting pipe (10), a second control valve (11) and a second one way valve (12) are arranged on a second connecting pipe (9), and the upper working chamber (4) is communicated with the lower working chamber (6) via the second connecting pipe (9). The utility model has the advantages of small flow resistance, small peak value of a water hammer, little reversion of the water pump or no reversion and long service life; installation is not limited by conditions, and the safety of other devices is ensured.

Description

The water pump intelligent control valve

Technical field

The utility model relates to a kind of control valve, particularly relates to a kind of water pump intelligent control valve.

Background technique

Intelligent control valve be mainly used in fields such as municipal administration, metallurgy, mine, oil, salt industry, medicine, power station (factory) civil building water intaking, send the non-return of holding concurrently in the transporting system of water, diving, sewage, pump house, by, eliminate water hammer, improve the safety reliability that supplies water.Conventional water pump hydraulic control valve is equipped with return spring, flow passage resistance force of waterproof is relatively large, adopt the mode of secondary throttle down to eliminate water hammer, close big valve plate after the termination of pumping earlier, close the area of passage more than 90%, 10% left and right sides area of passage of platelet remainder is closed in the back by the spring return, close valve so several deficiencies are arranged: first: understand the different applying working condition of each valve earlier, as the still perpendicular dress of paperback, how high lift is, secondary is closed the size of perforate in the middle of could determining valve plate, even will arrive the size of on-the-spot decision perforate; Second: determine the spring force size according to different operating modes, valve-closing time is long under the suitable situation of spring force, causes the water pump reversing time long, and is big to the pump influence; The 3rd: after the termination of pumping, the water hammer peak value often, and big (peak-peak is not less than 1.53 to 1.6 times of pump working pressure) influence life-span of facility use; The the 4th: because large baffle is movable, opens in current, to produce behind the pump and float, increased resistance; The 5th: in these control valve for water pump structures, cylinder and piston (diaphragm) must seal, and the switching resistance that is produced by sealing is big, and engaging pressure needs 0.08Mpa, and must adopt secondary pass water, just can prevent water hammer.

The model utility content

Technical problem to be solved in the utility model provides an a kind of throttle down, simple in structure, valve slow open and close is not subjected to any operating mode restriction, the anti-water pump intelligent control valve that water hammer is effective, flow resistance is little.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of water pump intelligent control valve, comprise valve body and valve rod dunnage, valve rod, be formed with the packed-piston chamber between described valve rod dunnage and the described valve body, be marked with liquid in described packed-piston chamber, valve rod one end that is slidingly mounted on the described valve rod dunnage is provided with the large baffle corresponding with the liquid entering hole of described valve body, the other end is provided with and the corresponding piston in described packed-piston chamber, described piston is divided into described packed-piston chamber goes up active chamber and following active chamber, be communicated with described first connecting tube of going up active chamber and following active chamber and be provided with first control valve and allow liquid to flow to first one-way valve of active chamber down, is communicated with described second connecting tube of going up active chamber and following active chamber and is provided with second control valve and allows liquid from last second one-way valve of active chamber of the following active chamber flow direction from last active chamber.

Adopt the water pump intelligent control valve of technique scheme, compare with original water pump hydraulic control valve, no return spring, no valve rod support guide frame in the middle of the runner mouth, after the termination of pumping in the pipeline backwater be disposable closing, the control of first connecting tube is delayed ETAD expected time of arrival and departure after opening pump, the backwater Slow Close non-return time after second connecting tube control termination of pumping.Utilize flow of fluid pressure to make active chamber liquid transfer to down active chamber by first connecting tube, main valve is slowly opened; After the termination of pumping, pressure of return water will descend active chamber liquid to transfer to active chamber by second connecting tube in the pipeline, and main valve is slowly closed non-return, by transfer liquid repeatedly in upper and lower active chamber, realize slow open and close.

The utlity model has following characteristics:

1, owing to cancel return spring and little plate member in the conventional valve, alleviated the spool deadweight, having changed modulating valve again closes mode in addition, makes engaging pressure reduce to 0.01Mpa by 0.08Mpa.

2, the valve slow open and close is not limited by any operating mode, flat perpendicular dress, lift height all can adapt to, can between 3 seconds to 120 seconds, regulate the slow open and close time by control valve on first connecting tube, the second connecting tube pipeline, at pump working pressure during less than 0.8Mpa, water pump is nonreversible during termination of pumping, and reversing time is no more than 12 seconds during greater than 0.8Mpa.

3, anti-water hammer is effective, and after the termination of pumping, conventional hydraulic control valve water hammer peak value is 1.53～1.65 times of pump working pressure, and intelligent control valve water hammer peak value of the present utility model is 1.2 to 1.25 times.

4, valve is once closed in employing, and large baffle was fixing after water pump was opened can not float, and it is little to cross flow resistance.

In sum, this water pump intelligent control valve flow resistance is little, the water hammer peak value is little, water pump counter-rotating less or nonreversible, install and be not subjected to condition restriction, long service life has guaranteed other device security reliabilities.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is a connecting tube structural representation of the present utility model.

Embodiment

Referring to Fig. 1 and Fig. 2, be formed with packed-piston chamber 5 between valve rod dunnage 7 and the valve body 1, be marked with liquid in packed-piston chamber 5, be slidingly mounted on valve rod 2 one ends on the valve rod dunnage 7 and be provided with the large baffle 8 corresponding with the liquid entering hole 15 of valve body 2, the other end is provided with the piston 3 corresponding with packed-piston chamber 5, piston 3 is divided into packed-piston chamber 5 goes up active chamber 4 and following active chamber 6, first connecting tube 10 of active chamber 4 and following active chamber 6 is provided with first control valve 14 and allows liquid to flow to first one-way valve 13 of active chamber 6 down from last active chamber 4 in the connection, and second connecting tube 9 of active chamber 4 and following active chamber 6 is provided with second control valve 11 and permission liquid from last second one-way valve 12 of active chamber 4 of following active chamber 6 flow directions connections in.

When needs are opened the water pump intelligent control valve, open first control valve 14, utilize flow of fluid pressure to act on large baffle 8, it is up that large baffle 8 promotes piston 3 by valve rod 2, make active chamber 4 liquid transfer to down active chamber 6 by first connecting tube 10 and first control valve 14 thereof and first one-way valve 13, the large baffle 8 of main valve is slowly opened; After the termination of pumping, open second control valve 11, pressure of return water acts on large baffle 8 in the pipeline, it is descending that large baffle 8 promotes piston 3 by valve rod 2, to descend active chamber 6 liquid to transfer to active chamber 4 by second connecting tube 9 and second control valve 11 thereof, second one-way valve 12, the large baffle 8 of main valve is slowly closed non-return, by at last active chamber 4, following transfer liquid repeatedly in the active chamber 6, has realized slow open and close.After opening pump, 10 controls of first connecting tube delay ETAD expected time of arrival and departure, the backwater Slow Close non-return time after the 9 control terminations of pumping of second connecting tube.

Claims

A kind of water pump intelligent control valve, comprise valve body (1) and valve rod dunnage (7), valve rod (2), it is characterized in that: be formed with packed-piston chamber (5) between described valve rod dunnage (7) and the described valve body (1), be marked with liquid in described packed-piston chamber (5), valve rod (2) one ends that are slidingly mounted on the described valve rod dunnage (7) are provided with the large baffle (8) corresponding with the liquid entering hole (15) of described valve body (2), the other end is provided with the piston (3) corresponding with described packed-piston chamber (5), described piston (3) is divided into described packed-piston chamber (5) goes up active chamber (4) and following active chamber (6), be communicated with described first connecting tube (10) of going up active chamber (4) and following active chamber (6) and be provided with first control valve (14) and allow liquid to flow to first one-way valve (13) of active chamber (6) down from last active chamber (4), second connecting tube (9) that is communicated with described upward active chamber (4) and following active chamber (6) is provided with second one-way valve (12) of second control valve (11) and permission liquid active chamber (4) on following active chamber (6) flow direction.