CN2531204Y

CN2531204Y - Energy-saving water pump control valve

Info

Publication number: CN2531204Y
Application number: CN 02223514
Authority: CN
Inventors: 何相华
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-24
Filing date: 2002-02-24
Publication date: 2003-01-15
Anticipated expiration: 2012-02-24

Abstract

The utility model discloses a micro resistance energy saving pump control valve, which comprises a valve body, a seal seat, a large valve plate, a slow closing valve plate, a valve stem, a valve seat, a valve cover, a diaphragm, a pressure plate, a spring, and an exhaust valve, etc. The valve cover and the valve seat have a diaphragm therebetween and form an upper and a lower diaphragm chambers, and the upper diaphragm chamber is communicated with the export of the valve, and the lower diaphragm chamber is communicated with the import of the valve. The intracavity of the valve is provided with the valve stem whose upper end is fixed on the diaphragm by the upper and the lower pressure plates through nut composite members, and the lower part of the valve stem is fixedly connected with the slow closing valve plate and is slidingly sleeved with a large valve plate in order after slidingly drilling through the center hole of the valve seat. The lower end of the valve stem slidingly drills through a lug boss hole which extends from the coat of the valve body, and the lower part of the valve seat is provided with a low pressure chamber. When the water passes through the valve normally, the large valve plate is firmly attracted on the low pressure chamber, and therefore the valve has the comprehensive advantages of good hammer eliminating effect, small passing water resistance.

Description

Little resistance energy-saving water pump control valve

The utility model relates to a kind of safety check, also is a kind of control valve for water pump.

In water system, in order to eliminate water hammer and convenient control and operation, produce and used control valve for water pump miscellaneous at present, as buffer valve, Tiny Drag Slow Shut Check Valves, multifunctional water pump control valve, hydraulic butterfly valve, DRV, elastic membrane damping check valve etc.Various control valve for water pump respectively have pluses and minuses: multifunctional water pump control valve to remove hammer effective; The mistake water resistance of Tiny Drag Slow Shut Check Valves is little, and obvious energy-saving effect is arranged.But also there be not a kind of, mistake water resistance little control valve for water pump effective that have simultaneously at present except that hammer.

The purpose of this utility model provides a kind of little resistance energy-saving water pump control valve, and it has simultaneously, and the hammer of removing is effective, the little comprehensive advantage of mistake water resistance.

The purpose of this utility model is achieved in that it comprises valve body, big valve plate, sealing seat, valve rod, Slow Close valve plate, spring, filter, flow adjustment screw assembly, valve seat, diaphragm, press table, top board, valve gap, outlet valve, sealing copper sheathing etc.Body cavity is divided into three openings: valve inlet, the opening of valve export and the affixed valve seat of another one, sealing seat is the separatrix of valve inlet and valve export, affixed again valve gap above the valve seat, cavity between valve seat and the valve gap is separated into upper diaphragm chamber and lower membrane chamber across a diaphragm and with cavity, the upper diaphragm chamber is connected with valve export by the valve rod center hole, lower membrane chamber is connected with valve inlet by aperture on the valve shell rib and the aperture on the valve seat, also is mounted with filter and flow adjustment screw assembly on this little hole path and is used for filtering and regulating flow.Body cavity is being settled a valve rod, the valve rod upper end is fixed on the diaphragm by nut assembly by top board and press table, the stem lower portion cunning is passed behind the supercentral sealing copper sheathing of valve seat successively, and weldering (glue) connects the Slow Close valve plate, the big valve plate of sliding sleeve, valve rod lower end sliding sleeve is on the copper sheathing of the boss hole that valve inlet valve shell inwall protrudes, big valve plate is by two copper sheathings and valve rod sliding sleeve, is connected the discharge orifice of the big valve plate of formation perforation between muscle and the muscle with muscle between copper sheathing and the big valve plate.

An open circles tubular low pressure chamber is stretched out in the valve gap lower end, a big opening is offered so that the Slow Close valve plate can free in and out in the low pressure chamber lower end, the arrangement seal ring is to increase the sealability of big valve plate and low pressure chamber on low pressure chamber lower end and the plane that big valve plate contact, the low pressure chamber upper end has an aperture and is in communication with the outside, this aperture and a long duct join, it is online that the other end of long duct is connected to the externally connected pipe of valve export, the distance of its tie point and valve export flange is 0.5～20 meter, preferably be connected to the place that produces advection on the pipeline, so that low pressure chamber produces pressure even the negative pressure that is lower than valve export hydraulic pressure.On the valve gap of little resistance energy-saving water pump control valve of the present utility model outlet valve is installed.

Mounting type of the present utility model and working principle are as follows: mounting type is referring to Fig. 2, valve inlet water pump waterexit end, valve export connects the rear tube road, before water pump is opened, because valve export hydraulic pressure is far above valve inlet hydraulic pressure, this pressure reduction tightly is pressed in big valve plate on the sealing seat and water is cut off, upper diaphragm chamber hydraulic pressure is with valve export hydraulic pressure in addition, lower membrane chamber's hydraulic pressure is with valve inlet hydraulic pressure, this pressure acts on by valve rod and is pressed on the Slow Close valve plate on the big valve plate, and the comprehensive function of these two kinds of power is closed tightly with big valve plate.After water pump was opened, valve inlet hydraulic pressure raise, and press water produces the power that promotes big valve plate, Slow Close valve plate, valve rod on the one hand.A small gangs of water enters lower membrane chamber by aperture on the other hand, because the flow of water is restricted, so big valve plate can only slowly be opened, has realized the slow purpose of opening, and has eliminated the turn on pump water hammer.The water pump normal operation period, big valve plate contacts with the seal ring of low pressure chamber, and the Slow Close valve plate has been closed the discharge orifice on the big valve plate, thereby the water in valve export water and the low pressure chamber is isolated, water in the low pressure chamber is connected by a long duct certain point with the external pipeline of valve export, this tie point preferably produces the place of laminar flow, thereby make the hydraulic pressure of the hydraulic pressure of low pressure chamber far below valve export, big valve plate is firmly held on low pressure chamber, both eliminated the big valve plate bob that causes owing to the valve inlet water pressure fluctuations, the deadweight and the spring force compressing valve export water of big valve plate have been eliminated again, thereby water resistance was reduced greatly, obvious energy-saving effect was arranged.During termination of pumping, the very fast decline of valve inlet hydraulic pressure, pipe network water stop to flow (or flow velocity reduction), the hydraulic pressure of low pressure chamber is equated substantially with valve export hydraulic pressure, and at this moment big valve plate glides rapidly under deadweight and spring force effect and is pressed on the sealing seat, thereby water is barred up, but the discharge orifice on the big valve plate is also continuing refluence water (account for total discharge 10～20%), eliminated impact of water hammer effectively, the water yield that flows backwards simultaneously is little, can not cause the high speed reverse rotation of water pump.At this moment, valve export water enters the upper diaphragm chamber, and compressing diaphragm and the pressing plate water of discharging lower membrane chamber that down moves enters valve inlet, drives valve rod, the Slow Close pressing plate slowly descends, and closes remaining refluence water in the time of setting.

Because adopt such scheme, this valve not only can be eliminated water hammer effectively as can be known, and it is little to cross water resistance, and obvious energy-saving effect is arranged.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the embodiment of a kind of concrete structure of the utility model;

Fig. 2 is the scheme of installation of the utility model in self filling type water pump mounting type.

With reference to Fig. 1, little resistance energy-saving water pump control valve of the present utility model is made up of valve body 1, big valve plate 2, sealing seat 3, following copper sheathing 4, valve rod 5, Slow Close valve plate 6, spring 7, filter 8, flow adjustment screw assembly 9, valve seat 10, diaphragm 11, press table 12, top board 13, panel nut assembly parts 14, valve gap 15, outlet valve 16, sealing copper sheathing 17, long duct 18, joint 19 etc.The sealed seat 3 of the inner chamber of valve body 1 is separated into valve inlet 101 and valve export 102, the valve shell inwall of valve inlet has protruded a boss 103 with holes, fixing copper sheathing 4 to be used for sliding sleeve valve rod 5 on the boss 103, in order to prolong the lowering position of valve rod 5, also have a groove 104 on the valve inlet, have an aperture 105 on the rib of valve body 1 and be used to be communicated with lower membrane chamber 1102 and valve inlet 101, be connected with valve seat 10 with screw on the opening of another valve body 1 that communicates with valve export 102, offering aperture 1002 on the valve seat 10 is connected with the aperture 105 of valve body 1, an open circles tubular low pressure chamber 1004 is stretched out in the below of valve seat 10, a big opening is offered so that Slow Close valve plate 6 can free in and out in low pressure chamber 1004 lower ends, settle seal ring 1001 to increase the sealability of big valve plate 2 and low pressure chamber 1004 on low pressure chamber 1004 lower ends and the big valve plate 2 contacted planes, the upper end of low pressure chamber 1004 has aperture 1003 and is connected with long duct 18, the other end of long duct 18 is connected on the joint 19 in the rear tube net of valve export 102, the top press fit valve gap 15 of valve seat 10, in the inner chamber of valve seat 10 and valve gap 15 across a diaphragm 11, diaphragm 11 is separated into upper diaphragm chamber 1101 and lower membrane chamber 1102 with this cavity, upper diaphragm chamber 1101 is connected with valve export 102 by the aperture on the valve rod 501, lower membrane chamber is connected with valve inlet 101 by aperture 105 on valve body 1 rib and the aperture 1002 on the valve seat 10, is mounted with filter 8 and flow adjustment screw assembly 9 on the aperture.The endoluminal means of valve body 1 has a valve rod 5, press table 12 is passed through with panel nut assembly parts 14 in the upper end of valve rod 5, top board 13 is fixed on the diaphragm 11, after the stem lower portion cunning is passed sealing copper sheathing 17 on valve seat 10 center holes, its underpart is welded (glue) successively and is connect Slow Close valve plate 6, the big valve plate 2 of sliding sleeve, in the following copper sheathing 4 in the boss 103 that valve rod 5 lower end sliding sleeves protrude on valve inlet 101, in order to increase sealability, be mounted with seal ring 601 on the Slow Close valve plate 6, be mounted with seal ring 201 on the big valve plate, be mounted with seal ring 1701 in the sealing copper sheathing 17, in order to increase the action sensitivity of big valve plate 2, be embedded with copper sheathing 202 on the big valve plate 2 and reach copper sheathing 203 down, to be mounted with spring 7 between the upper end of big valve plate 2 and low pressure chamber 1004, to break water hammer in order eliminating, valve gap 15 upper ends are fixed with outlet valve 16.

Claims

1, a kind of little resistance energy-saving water pump control valve, by valve body, sealing seat, big valve plate, the Slow Close valve plate, valve rod, valve seat, valve gap, diaphragm, pressing plate, spring, compositions such as outlet valve, body cavity is divided into three openings: valve inlet, the opening of valve export and the affixed valve seat of another one, affixed again valve gap above the valve seat, it is characterized in that cavity between valve seat and the valve gap is across a diaphragm, and be divided into upper diaphragm chamber and lower membrane chamber, the upper diaphragm chamber communicates with valve export, lower membrane chamber communicates with valve inlet, body cavity is being settled a valve rod, the valve rod upper end is fixed on the diaphragm by the panel nut assembly parts by last press table, the stem lower portion cunning is passed affixed successively Slow Close valve plate behind the valve base center hole, the big valve plate of sliding sleeve, valve rod lower end sliding sleeve offers discharge orifice on the main valve plate in the boss hole with holes that valve inlet valve shell inwall protrudes.

2, little resistance energy-saving water pump control valve according to claim 1 is characterized in that the valve rod center offers an aperture, and the aperture upper end is connected with the upper diaphragm chamber, and the lower end is connected with valve export.

3, little resistance energy-saving water pump control valve according to claim 1, it is characterized in that offering an aperture on the rib of valve shell, the aperture of offering on the valve seat on an aperture and the valve shell connects, and this combination aperture upper end is communicated with lower membrane chamber, and the lower end is communicated with valve inlet.

4, little resistance energy-saving water pump control valve according to claim 3 is characterized in that being mounted with on the aperture filter and flow adjustment screw assembly.

5, little resistance energy-saving water pump control valve according to claim 1 is characterized in that the valve seat bottom extends a low pressure chamber that is used to hold big valve plate.

6, little resistance energy-saving water pump control valve according to claim 5, it is characterized in that low pressure chamber offer one with the aperture of external communications, aperture links to each other with long duct, and it is online that the other end of long duct is connected to the valve export externally connected pipe, and tie point and valve export flange distance is 0.5～20 meter altogether.

7, little resistance energy-saving water pump control valve according to claim 5 is characterized in that being mounted with seal ring on low pressure chamber bottom and the plane that big valve plate contacts.

8, little resistance energy-saving water pump control valve according to claim 1 is characterized in that being provided with in the low pressure chamber spring, spring upper end be pressed in low pressure chamber above, the lower end is pressed on the big valve plate.

9, little resistance energy-saving water pump control valve according to claim 1 is characterized in that being mounted with on the valve gap outlet valve.