CN2654966Y

CN2654966Y - Electromagnetic-hydraulic slow-closing gate valve

Info

Publication number: CN2654966Y
Application number: CN 200320114645
Authority: CN
Inventors: 冉启明
Original assignee: CHONGQING GUTE WATER SUPPLYING AND DRAINING EQUIPMENT Co Ltd
Current assignee: CHONGQING GUTE WATER SUPPLYING AND DRAINING EQUIPMENT Co Ltd
Priority date: 2003-11-14
Filing date: 2003-11-14
Publication date: 2004-11-10
Anticipated expiration: 2013-11-14

Abstract

The utility model relates to a hoisting device of a water supply system in pumping stations, in particular to an electromagnetic-hydraulic slow shut gate valve, which comprises a valve body, a cylinder seat, a piston, a cylinder, a cylinder head, a five/two-way solenoid shuttle valve, an indication rod, a limit switch, a valve rod, and a damper plate, and is characterized in that a shutoff piston is arranged at the joint between the lower end of the indication rod and the valve rod. The shutoff piston and the water pipe in the upper end of the cylinder seat form a deceleration cavity; the water pipe of the cylinder seat is provided with a water pore, which is communicated with the inner cavity of the cylinder body and a needle shape speed control valve vertically is arranged at the lower end. The utility model has the advantages that the structure is simple, safe, and reliable, the throttle is changed from external structure to internal structure, and the lifecycle and reliability of the gate valve is improved.

Description

Electromagnetism-the Slow Close gate valve surges

One, technical field

The utility model relates to the opening and closing device in a kind of pumping plant water system, and particularly a kind of electromagnetism-the Slow Close gate valve surges.

Two, background technique

Opening and closing device in the pumping plant water system, extensively adopt compositions such as water pump, safety check, mortor operated valve, water-hammer arrester, when closing pumping plant or having a power failure suddenly, pumping plant is quick closedown, will produce water hammer under water storage pressure, water hammer will cause damage to equipment or pipe network, and reduced and the pipe explosion accident generation working life of equipment, owing to use parts more, and adopt safety check to bring high power consumption.Energy-saving safe gate valve of Chu Xianing and the self-closing gate valve of double speed in the market, it is made up of valve body, cylinder seat, cylinder body, cylinder cap, piston, indicating arm and throttle valve etc., although by throttle valve control Slow Close gate valve, eliminated water hammer, but because throttle valve is located at the cylinder cap top, be external, pressure by platen on the indicating arm or collision block is realized, the use part is more, because platen or collision block directly force in throttling arrangement, indicating arm easily occurs bending and deformation and leaks, thereby reduces the working life and the functional reliability of gate valve.

Three, summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of simple in structure, safe in utilization, energy-conservation, becomes external throttle structure and is built-in throttle structure, can improve gate valve working life and functional reliability electromagnetism-the Slow Close gate valve surges.

The purpose of this utility model is to adopt such technological scheme to realize, a kind of electromagnetism-the Slow Close gate valve surges, include valve body, cylinder seat, piston, cylinder body, cylinder cap, two-position five-way solenoid directional control valve, indicating arm, position limit switch, valve rod, flashboard, it is characterized in that: lower end and valve rod joint at indicating arm are arranged with the piston that dams, the water channel that dams in piston and the cylinder seat upper-end surface constitutes velocity-reducing chamber, the water channel of cylinder seat is provided with a water hole that communicates with inner chamber of cylinder block, the vertical aciculiform series flow control valve that is provided with the water hole in the lower end in water hole.

By the utility model provide electromagnetism-the Slow Close gate valve surges, owing on the cylinder seat, be provided with velocity-reducing chamber and aciculiform series flow control valve that the piston that dams by water channel and indicating arm end constitutes, form built-in throttle structure, as power source, rely on the keying of two-position five-way solenoid directional control valve control Slow Close gate valve with medium hydraulic pressure in barrel.Closing closed procedure divides two stages to finish, first quick and back slow, the cylinder body of gate valve top is connected water source water filling in cylinder body through solenoid directional control valve and is made the downward fast moving of piston on the indicating arm when promptly closing, bottom water in the cylinder body is discharged by water channel, the piston head valve push rod is closed flashboard, when the piston that dams of indicating arm lower end moves to when constituting velocity-reducing chamber on the cylinder seat, the inferior part of the cylinder block current are obstructed, piston slows down, flashboard slows down.Regulate the aciculiform series flow control valve on the cylinder seat, the water yield in the water hole on the may command cylinder seat, governing speed realizes Slow Close.Thereby reach purpose safe, automatic, energy-conservation, joint money, use part few, simple in structure, become the external throttling and be built-in throttle structure, indicating arm is not fragile, has improved the working life and the functional reliability of gate valve.

Four, description of drawings

Accompanying drawing is a structural representation of the present utility model.

Among the figure: the 1-valve body 2-cylinder seat 3-velocity-reducing chamber 4-one-way valve 5-piston 6-cylinder body 7-cylinder cap 8-two-position five-way solenoid directional control valve 9-indicating arm 10-position limit switch 11-aciculiform series flow control valve 12-valve rod 13-flashboard 14-piston 15-water hole of damming

Five, embodiment

Below according to description of drawings embodiment of the present utility model.As shown in drawings, a kind of electromagnetism-the Slow Close gate valve surges, include valve body 1, cylinder seat 2, piston 5, cylinder body 6, cylinder cap 7, two-position five-way solenoid directional control valve 8, indicating arm 9, position limit switch 10, valve rod 12, flashboard 13, it is characterized in that: lower end and valve rod joint at indicating arm 9 are arranged with the piston 14 that dams, dam water channel formation velocity-reducing chamber 3 in piston 14 and cylinder seat 2 upper-end surfaces, the water channel of cylinder seat 2 is provided with the lower end and the water hole 15 vertical aciculiform series flow control valves 11 that are provided with in 15 water holes 15, a water hole that communicates with inner chamber of cylinder block.The water channel top of cylinder seat 2 also is provided with a flow direction that communicates with cylinder body 6 inner chambers for flow to the one-way valve 4 of inner chamber of cylinder block from cylinder seat water channel.When opening gate valve, can be by one-way valve to the cylinder body inner water-supply by the current of two-position five-way solenoid directional control valve control through velocity-reducing chamber, the current that make unlatching through water hole and one-way valve simultaneously to the cylinder body inner water-supply, to improve the opening speed of gate valve.

Claims

1, a kind of electromagnetism-the Slow Close gate valve surges, include valve body (1), cylinder seat (2), piston (5), cylinder body (6), cylinder cap (7), two-position five-way solenoid directional control valve (8), indicating arm (9), position limit switch (10), valve rod (12), flashboard (13), it is characterized in that: lower end and valve rod joint at indicating arm (9) are arranged with the piston that dams (14), water channel formation velocity-reducing chamber (3) in piston (14) and cylinder seat (2) upper-end surface dams, the water channel of cylinder seat (2) is provided with a water hole that communicates with inner chamber of cylinder block (15), the vertical aciculiform series flow control valve (11) that is provided with water hole (15) in the lower end of water hole (15).

2,, it is characterized in that the water channel top of described cylinder seat (2) also is provided with a flow direction that communicates with cylinder body (6) inner chamber for flow to the one-way valve (4) of inner chamber of cylinder block from cylinder seat water channel by the described electromagnetism of the claim 1-Slow Close gate valve that surges.