CN2504410Y - :Multifunctional water pump control valve - Google Patents

Abstract

The utility model relates to a multipurpose water pump control valve, comprising a valve body (1), a valve seat (18) is provided on a fluid path between a valve body inlet (2) and a valve body outlet (17), a valve clack (5) arranged at the front end of a valve rod (6) as well as a seal gasket (4) and the valve seat are formed to a seal pair, the utility model is characterized in that the rear end of the valve rod is provided with a piston cylinder (8) isolated from the fluid path of the valve body, the valve rod (6) is inserted into the piston cylinder and connected with a piston (13), the operation chambers in front of the piston and after the piston are separately connected with the two output ends of an electromagnetic reversing valve (14) connected with a pressure fluid source. The utility model can achieve various purposes under the circuit control or the hand control, thereby ensuring the safe and reliable operation of the fluid pipes.

Description

Multifunctional water pump control valve

Technical field

The utility model belongs to a kind of multifunctional water pump control valve.

Background technique

Existing control valve for water pump is many to be sensing element with the barrier film, no pilot element, so function singleness, the zero delivery that for example can not realize centrifugal pump starts, the standard-sized sheet of axial-flow pump starts, can not realize closing earlier behind the valve functions such as closing valve after termination of pumping or the first termination of pumping, and have the keying parts of portioned product still to control with spring, and it is unreliable to work, and working life is short.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of energy and realizes multiple function and multifunctional water pump control valve safe and reliable to operation.

The technological scheme that addresses the above problem is (referring to implementing illustration): the utility model comprises valve body (1), valve body inflow port (2) and the flow channels that goes out between the head piece (17) are provided with valve seat (18), flap (5) that valve rod (6) front end is provided with and sealing gasket (4) are formed sealing pair with valve seat, it is characterized in that: described valve rod rear end is provided with the piston cylinder (8) of isolating with the valve body flow channels, valve rod (6) stretches into piston cylinder and links to each other with piston (13), and the active chamber before and after the piston links to each other with two output terminals of the solenoid directional control valve (14) that links to each other with pressure fluid source respectively.

Working principle of the present utility model is: it is by guide's parts solenoid directional control valve and piston control that valve body opens and closes the parts flap, when piston moves downward under the pressure fluid source of solenoid directional control valve output drives, flap and valve seat closure, flow channels is closed, fluid change direction when solenoid directional control valve output, when piston was moved upward, flap separated with valve seat, and flow channels is opened.The speed that opens and closes of the utility model flap, operating time are by piston and solenoid directional control valve decision, and the flow of solenoid directional control valve can be regulated by the flow regulating part in the loop, opening and closing time and operating time again can be by circuit or manually controls, so it is controlled that the working procedure of flap, opening and closing time and speed just become, this just realizes that for it various functions provide precondition under different operating modes, for example:

1, the zero delivery operating mode of centrifugal pump starting: this control valve can satisfy the requirement of different starting times of different capacity motor, guarantee the different required time of zero delivery operating mode, and then according to different opening speeds, open control valve, guarantee the air horsepower starting of centrifugal pump, and can prevent that pump from supplying water and the motor overload and the water hammer of generation suddenly with minimum;

2, to axial-flow pump: restart pump after can making the control valve full open, guarantee that axial-flow pump starts with minimum air horsepower;

3, closed control valve under the not termination of pumping operating mode: can press the slow closed control valve of setting speed under the operating mode that not termination of pumping is supplied water, termination of pumping on time then can reduce even exempt water hammer harm to greatest extent;

4, termination of pumping closed control valve: can in termination of pumping, press the slow closed control valve of setting speed, reduce the variable gradient of water velocity, can prevent aqueous reflux, can prevent water hammer harm again.

The driving pressure source of the utility model solenoid directional control valve both can utilize the control valve inflow port, go out the pressure medium at head piece place, also can be by the confession in addition of pressure station, and the working medium in the piston cylinder is available water, also usable oils both.

In sum; the utility model can be at circuit or is manually controlled under the cooperation; realize multiple function: set time and the keying speed of opening and closing; centrifugal pump is started under the air horsepower of minimum, zero delivery operating mode, then slowly open, guarantee unit safety operation; can carry out Slow Close by the speed of setting in not termination of pumping or in termination of pumping during cutout; reduce even exempt the harm of water hammer, guarantee the safety of water supply network, this control valve also has the advantage of reliable operation.

Description of drawings

Fig. 1, the utility model example structure schematic representation

1-valve body 2-inflow port 3-guide plate 4-sealing gasket 5-flap 6-valve rod 7-guide sleeve

8-piston/cylinder 9-valve gap 10-stud bolt connects cap 11-joint 12-locking nut 13-piston

14-solenoid directional control valve 15-joint 16-throttle valve 17-goes out head piece 18-valve seat

Specific embodiments

The inflow port 2 of present embodiment valve body 1 and the dead in line that goes out head piece 17, valve seat 18 axis be acute angle into and out of the head piece axis angle, valve rod 6 and piston cylinder 8 axis and valve seat dead in line, whole flow channels is half line streamline molded breadth valve pocket direct current type structure, the change curve of flow channels is level and smooth, can reduce flow resistance.

Valve rod 6 is slidingly matched and passes the piston cylinder 8 that guide sleeve 7 stretches into the rear portion, the flap front side of valve rod front end is provided with guide plate 3, with sealing gasket 4 pressure holdings on flap 5, the spring of existing flap upside and the guide mechanism of downside have been cancelled, can effectively reduce the flow resistance of medium, have the advantage of energy-conservation, noise elimination, vibrationproof by valve seat.

Valve gap 9 connects cap 10 by stud bolt and is fixed on the piston cylinder tail end, form seal chamber, active chamber before and after the piston is respectively equipped with joint 11 and joint 15, this routine solenoid directional control valve 14 adopts the two-position five-way solenoid directional control valve, the joint 11 in pistons work chamber, 15 link to each other with its two output terminal respectively, another brings out with atmosphere and communicates, this routine solenoid directional control valve driving pressure source is the inlet and outlet pressure water that utilizes pump, its two input end is respectively with control valve inflow port 2 with go out head piece 17 and be communicated with, in the solenoid directional control valve loop, be connected to the throttle valve 16 that is used to regulate flow, can be in order to regulate the keying speed of setting flap.When pump startup, the press water at control valve inflow port place enters solenoid directional control valve 14 by the time of throttling and setting, flow into the piston underside active chamber again, this moment, piston upside active chamber communicated with the press water disconnection that goes out the head piece place and with the selector valve loop, and lead to atmosphere, setting after the pump starting constantly, piston 13 drives flap by the speed of setting and slowly rises, control valve is opened, the medium proper flow, during if the circulating water in the pipe network will be stopped, no matter be termination of pumping or not termination of pumping, as long as drive selector valve commutation work, piston upside active chamber and loop disconnect, and the press water that control valve goes out the head piece place flows into piston upside active chamber, simultaneously the piston underside active chamber promptly disconnects with the press water at control valve inflow port place, and communicate with the loop and lead to atmosphere, piston 13 drives flaps 5 and moves downward by the speed of setting, until control valve is closed.

This example has disposed lifting bolt respectively in inflow port 2, above going out the flange at head piece 17 places, is beneficial to installation, maintenance.

Claims (2)

1, multifunctional water pump control valve, comprise valve body (1), valve body inflow port (2) and the flow channels that goes out between the head piece (17) are provided with valve seat (18), flap (5) that valve rod (6) front end is provided with and sealing gasket (4) are formed sealing pair with valve seat, it is characterized in that: described valve rod rear end is provided with the piston cylinder (8) of isolating with the valve body flow channels, valve rod (6) stretches into piston cylinder and links to each other with piston (13), and the active chamber before and after the piston links to each other with two output terminals of the solenoid directional control valve (14) that links to each other with pressure fluid source respectively.

2, multifunctional water pump control valve according to claim 1, it is characterized in that: described valve rod (6) passes the piston cylinder (8) that guide sleeve (7) stretches into the rear portion with being slidingly matched, the flap front side of valve rod front end is provided with guide plate (3), with sealing gasket (4) pressure holding on flap (5).

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