CN1548797A - Slow-opening and fast-closing energy-saving non-return valve - Google Patents

Abstract

The present invention is one kind of slowly-opening fast-closing energy-saving non-return valve integrating the functions of gate valve, butterfly valve, non-return valve, etc. The valve has straight tubular valve body, valve seat, shaft sleeve, shaft lining, valve shaft, valve clack with spherical leading face, sealing ring and sealing seat to form radial sealing, fast closing spring, slowly opening piston cylinder system, telescopic flange, and other parts. The valve is slowly opened via regulating the cut-off valve and non-return valve. The valve has the advantages of fast closing, complete elimination of water hammer, close sealing, slow and adjustable opening, small resistance, saving in energy, light weight, etc.

Description

The energy-conservation safety check of slow-opening quick-closing

(1) technical field: the present invention relates to valve technology field, particularly a kind of energy-conservation safety check of slow-opening quick-closing that integrates multiple functions such as gate valve, butterfly valve, safety check.

(2) background technique: in the conveyance fluid pipeline that promotes with pump, power failure or other mechanical accidents are unavoidable suddenly.Cause reversing of pump hypervelocity or pump house to be flooded for preventing that fluid flows backwards in the pipeline, often gate valve, butterfly valve and safety check all are housed in the outlet port of pump.At present, domestic and international products such as the gate valve that uses in the water supply and sewage work, butterfly valve, micro-resistance slowly-closed class safety check, the ubiquity function singleness can not the phase trans-substitution, interlock mutually, volume is big, heavy, and the mistake flow resistance is big, shortcomings such as debugging, troublesome poeration.Tiny Drag Slow Shut Check Valves exists also that Slow Close has backflow when closing valve, the pump reversing, and it is not thorough to eliminate water hammer, defectives such as debugging, maintenance difficult

(3) summary of the invention: at the above-mentioned defective of prior art, the present invention aims to provide a kind of multiple functions such as gate valve, butterfly valve, safety check that integrate, applied range, thoroughly eliminate the energy-conservation safety check of slow-opening quick-closing of water hammer, the technological scheme of employing is: this valve mainly by valve body, flap, valve shaft, valve seat, slowly open the piston cylinder system, transfer parts such as flow shutoff valve, one-way valve and creeping flange to constitute.Valve body is a straight-through type tubular structure, is provided with the tubulose sealing seat of an inner band inner conical surface in the flange inboard at valve port place.Valve body middle part be equipped with one with the perpendicular valve seat of valve axis, be fixed with the axle sleeve that is provided with along valve axis towards the valve port direction on it, stud with muff in the axle sleeve, valve shaft is housed in the muff.Valve shaft is fixed with flap towards valve port direction end vertically, and the flap upstream face is similar to sphere, along the circumferential direction in the sealed groove of She Zhiing seal ring is housed.Valve shaft passes valve seat the nut that is used for the valve shaft location and fixes is housed at the other end.On valve shaft between flap concave surface and the valve seat and the axle sleeve speed is housed and closes spring.Slow open the piston cylinder system and mainly be made of cylinder sleeve, supporting sleeve, piston cylinder, piston and seal ring etc., cylinder sleeve is contained in the valve seat the other end, by the supporting sleeve positioning and fixing piston cylinder and piston is arranged in it, and cylinder sleeve, piston cylinder and piston seal mutually with seal ring.On the diapire of piston cylinder C chamber an one-way valve that outwards closes, inwardly opens is housed, which is provided with opening D; On the sidewall of C chamber, be associated with the accent flow shutoff valve that is contained on the valve body, which is provided with opening A through adapter.Establishing an opening on the left end sidewall of piston cylinder B chamber communicates with pneumostome on respirating tube and the valve body.Between valve seat and cylinder sleeve, be provided with the runner that E chamber water is is freely come in and gone out.Creeping flange also is housed on the valve rear end flange, is convenient to the loading and unloading of this valve.

Owing to take above-mentioned technical solution, working principle of the present invention and beneficial effect by the function division are: the one, and the safety check function.After the pump starting, the pressure of fluid and thrust make flap compression speed close spring disengaging sealing seat, at the slow maximum opening that can slowly reach valve under the piston cylinder systemic effect of opening.This process, C chamber capacity reducing, one-way valve close dead, the water in C chamber can only be through taking over by transferring controlled the entering in the valve body in flow shutoff valve opening A place, thus regulating valve pass through flow.Gas in the B chamber is is freely come in and gone out by the passage that respirating tube, pneumostome constitute when the piston side-to-side movement.Water in the E chamber is is freely come in and gone out by runner when the piston side-to-side movement.Must be pointed out at this, when flap leaves sealing seat and moves, bore the gradually wide vertically circular runner of intersegmental formation one in the inclination of the meet water sphere and the valve body of flap in valve, Here it is this valve is in the flow channels at valve port place.This circular runner is moving axially and size variation makes the Flow characteristics of this valve be tending towards straight line with flap, has adjustability, for the accent stream function of valve has been created structural condition.

After pump stopped, water flow pressure and speed reduced rapidly, and flap closes in speed under the effect of spring force rapidly to the motion of valve port direction, and were zero or enter sealing seat near zero the time that in valve port place water flow velocity form radial seal, valve closes dead.When speed was closed, valve shaft afterbody and piston handle broke away from, and return fast.Because greater than in the E chamber, therefore piston moves to the valve port direction piston at the compression area in C chamber thereupon.The gas in this process B chamber is by outside respirating tube, mouthful expulsion valve; The dilatation of C chamber, water is mended through taking over from the opening D and the accent flow shutoff valve opening A of one-way valve.This shows that this valve slow opened and closed in motion and control with speed all is that respectively independently speed closes to regulate and control.Close technology owing to this valve adopts speed, the elimination water hammer is thorough, does not have and refluxes, and pump does not reverse, and the elimination water hammer that has thoroughly solved existing Slow Close class safety check existence is not thorough, and backflow is arranged, the pump reversing, and valve is debugged disadvantages such as loaded down with trivial details.Because this valve adopts radial seal, valve seal is tightly reliable, and is watertight, and seal ring is cheap and easy to get, and it is convenient to change.Because this valve adopts upstream face to be the flap of approximate sphere and the circular runner of gradual change, flow resistance coefficient is significantly less than existing gate valve, butterfly valve, all kinds of safety check and other hydraulic control valves, and extremely significantly electricity saving and energy saving effect is arranged.Simultaneously, this valve simple in structure, control is convenient, interlock degree height, debugging amount and maintenance are few, are provided with the creeping flange loading and unloading easily, bring great convenience to the user.Because of this valve body is long-pending little, weight is 1/3 of the existing Tiny Drag Slow Shut Check Valves of same specification, and great competitive ability is arranged on market again.

The 2nd, the accent stream function of electric butterfly valve.General pump is the influence of the excessive and water hammer of current of electric when preventing turn on pump, and an electric butterfly valve or gate valve are set in the pump back.Slowly open earlier butterfly valve or gate valve during turn on pump, to guarantee security of system.The slow function of opening of this valve has just solved this problem, and that realizes valve slowly opens from 0-120 smoothly adjustablely second, saves an electric butterfly valve or gate valve.Transfer flow shutoff valve once mixing up, valve is just opened by predefined speed is slow, and its process is continuous, automatic, for condition has been created in the automatic control and the computer control of machine room.Simultaneously, if require system to move under certain flow, can extremely end transferring flow shutoff valve to close at this moment, the aperture of flap just no longer increases, and flow is effectively controlled, and has played the effect of electric butterfly valve or gate valve accent amount.

The 3rd, gate valve by function.When this valve was in the closed position, flap formed radial seal in sealing seat.At this moment, will transfer flow shutoff valve due to closing dead rest position, owing to the water in the C chamber can't be discharged, thereby the may command flap is motionless.Even open pump, valve is still located closed condition, has finished the function of ending of gate valve.

(4) description of drawings: Fig. 1 is a structural representation of the present invention.

(5) embodiment:, elaborate a kind of optimal way of the present invention below in conjunction with accompanying drawing.Referring to Fig. 1 as can be known, the present invention mainly by valve body 1, flap 4, valve shaft 6, valve seat 10, slowly open the piston cylinder system, transfer parts such as flow shutoff valve 13, one-way valve 20 and creeping flange 18 to constitute.Valve body 1 is a straight-through type tubular structure, is provided with the tubulose sealing seat 2 of an inner band inner conical surface in flange inboard, valve port place.Valve body 1 middle part be equipped with one with the perpendicular valve seat 10 of valve body 1 axis, be fixed with along valve body 1 axis towards valve port 9 directions the axle sleeve 8 that is provided with on it, stud with the muff 7 that high-abrasive material is made in the axle sleeve 8, valve shaft 6 is housed in the muff 7.Valve shaft 6 is fixed with flap 4 towards valve port 9 direction ends vertically, and flap 4 upstream faces are approximate sphere, in the sealed groove of establishing along its circumferencial direction seal ring 3 is housed.Valve shaft 6 passes valve seat 10 nut 22 that is used for valve shaft 6 location and fixes is housed at the other end.On valve shaft 6 between flap 4 concave surfaces and the valve seat 10 and the axle sleeve 8 speed is housed and closes spring 5.Slow open the piston cylinder system and mainly constitute by cylinder sleeve 23, supporting sleeve 25, piston cylinder 26, piston 28 and seal ring 27 etc., cylinder sleeve 23 is contained in valve seat 10 the other ends, by supporting sleeve 25 positioning and fixing piston cylinder 26 and piston 28 are arranged in it, cylinder sleeve 23, piston cylinder 26 and piston 28 usefulness O RunddichtringOs 27 seal mutually.One one-way valve 20 that outwards closes, inwardly opens is housed on C chamber 19 diapires of piston cylinder 26, which is provided with opening D21; On 19 sidewalls of C chamber through take over 17 be associated be contained on the valve body 1, the accent flow shutoff valve 13 of operating grip outside valve body 1, which is provided with the opening A12 in valve.Communicate with pneumostome 15 on respirating tube 16 and the valve body 1 establishing an opening on the 14 left end walls of piston cylinder 26B chamber.Be provided with the runner 11 that water is is freely come in and gone out in the E chamber 24 at valve seat 10 and 23 of cylinder sleeves.On the back end flange of valve body 1, creeping flange 18 is housed also.

Claims (5)

1, the energy-conservation safety check of a kind of slow-opening quick-closing mainly is made of valve body (1), flap (4), valve shaft (6), valve seat (10), slow piston cylinder system, accent flow shutoff valve (13), one-way valve (20) and the creeping flange parts such as (18) opened, it is characterized in that valve body (1) is a straight-through tube shape structure, be provided with the tubulose sealing seat (2) of an inner band inner conical surface in the flange inboard that valve port (9) is located; Valve seat (10) is equipped with at valve body (1) middle part, and fixed axle sleeve on it (8) studs with in the axle sleeve (8) in muff (7), the muff (7) valve shaft (6) is housed; One end of valve shaft (6) is fixed with flap (4), and flap (4) upstream face is for approximate sphere, along seal ring (3) is housed in the groove of its circumferencial direction; Valve shaft (6) passes valve seat (10) nut (22) that is used for the valve shaft location and fixes is housed at the other end; On valve shaft (6) between flap (4) concave surface and valve seat (10) and the axle sleeve (8) speed is housed and closes spring (5); Delay and open the piston cylinder system mainly by cylinder sleeve (23), supporting sleeve (25), piston cylinder (26), piston (28) and seal ring formations such as (27), cylinder sleeve (23) is contained in valve seat (10) the other end, by supporting sleeve (25) positioning and fixing piston cylinder (26) and piston (28) are arranged in it, cylinder sleeve (23), piston cylinder (26) and piston (28) seal mutually with seal ring (27); On C chamber (19) diapire of piston cylinder (26) one-way valve (20) is housed, which is provided with opening D (21); On the sidewall of C chamber (19), be associated with and be contained in valve body (1) and raise flow shutoff valve (13), which is provided with opening A (12) through taking over (17); Communicate with pneumostome (15) on respirating tube (16) and the valve body (1) establishing an opening on the left end wall of piston cylinder (26) B chamber (14); Between valve seat (10) and cylinder sleeve (23), be provided with the runner (11) that water is is freely come in and gone out in the E chamber (24).Creeping flange (18) also is housed on the back end flange of valve body (1).

2, safety check according to claim 1 is characterized in that the speed of this valve when slow opening, and is by transferring flow shutoff valve (13) that slow regulation and control of opening the piston cylinder system are implemented.

3, according to claim 1,2 described safety check, it is characterized in that the gradually wide vertically circular runner of intersegmental formation one is bored in the inclination of the meet water sphere and the valve body (1) of flap (4), its runner is moving axially and size variation with flap (4).

4, safety check according to claim 1 is characterized in that this valve flap (4) when speed is closed closes under spring (5) active force in speed, enters sealing seat (2) rapidly, realizes radial seal with its seal ring (3).

5, according to claim 1,2 or 4 described safety check, what it is characterized in that this valve slowly opens that to close in motion and control with speed all be respectively independently.

Images