CN2675971Y - Membrane type double-chamber balanced rapid-open soil discharging electromagnetic valve - Google Patents

Abstract

The utility model relates to a membrane type double-chamber balanced rapid-open soil discharging electromagnetic valve, comprising a valve body, a valve cover, a membrane base, a membrane clamping plate, a valve handle, a release spring, a guiding pipe, a pressure relief pipe, etc. The opening and the closing of the electromagnetic valve is controlled by a two-position two-way electromagnetic valve, and a manual control valve is also provided. Pressure balancing holes are arranged on a membrane and the membrane clamping plate which are provided between the membrane base and the valve cover, and accordingly, a double-chamber balanced structure which is separated by the membrane is formed. A backwashing interface is arranged on the valve body, and the elongated guiding pipe and a mud hole are arranged on the membrane base. A valve base is sealed by milling with a stainless steel pyramidal face, and the valve handle is guidingly sealed by the double combination of a guiding ring and a sealing ring. The electromagnetic valve is rapid in valve opening, and the rapid opening and slow closing without punching can be realized only by the two-position two-way electromagnetic valve according the double-chamber balanced principle. The electromagnetic valve has good guiding and sealing properties, good reliability in anti-clamping, and long service life. The soil, sands and contaminations at the bottom of a pool can be effectively discharged by installing the electromagnetic valve on the boring soil discharging pipe system at the bottom of the pool.

Description

The two chambers of diaphragm type balanced rapid-open soil discharging electromagnetic valve

Technical field

The utility model relates to the two chambers of a kind of diaphragm balanced rapid-open soil discharging electromagnetic valve.

Background technique

The open and close of the membrane type quick-opening mud valve of general routine adopts the control of two position four-way valves, and rate of fault is higher, and cost is also high.The open and close of such soil discharging valve is by finishing under the positive and negative both direction active force of driven medium, and therefore, flap produces bigger impact force to valve seat during valve closing, and flap, valve seat, diaphragm, valve rod are caused damage, the maintenance cost height easily.The backwash interface all is not set on the valve body, after the spoil disposal pipeline is stopped up by silt particle, must dismantles valve and just can dredge cleaning.Stem guiding length is short, and the pilot centering poor performance causes flap and valve seat to misplace when valve closing easily, not only causes valve leak, and flap, valve seat damage easily; The general line with rubber sealing means that adopts on the conventional soil discharging valve flap after caulking gum damages, needs take valve integral body apart replacing, maintenance cost height not only, and also maintenance load is big.Valve seat adopts cast steel or carbon steel to use after surface treatment, and after using a period of time, valve seat coating gets rusty and peels off, and causes valve seal sternly not leak.Valve rod is only adopted O-ring seals sealing, when O-ring seals behind wear out failure after a while, valve rod then produces the stiff dough friction with the guide sleeve inwall, can cause stem surface heavy wear and makes the valve cisco unity malfunction.In addition, general conventional membrane type quick-opening mud valve is not provided with mud hole in diaphragm seat bottom, when impurity such as the silt particle in the driven medium, anvil cinder are deposited on diaphragm seat bottom, can't discharge and cumulative, and very easily enter the wearing and tearing that cause valve rod and pilot seal part in the guide sleeve and jam and damage valve.

Summary of the invention

The purpose of this utility model just is to provide a kind of employing two-position two-way solenoid valve control open and close, steering capability is good, close valve do not have impacts, can deslagging, mechanical wear is little, anti-sticking is durable, can change rubber seal easily, can connect backwash valve, diaphragm type pair chambers balanced rapid-open soil discharging electromagnetic valve that amount of maintenance is minimum.

Realize that above-mentioned purpose solution of the present utility model is: the two chambers of a kind of diaphragm type balanced rapid-open soil discharging electromagnetic valve, it comprises valve body, flap, valve rod, valve gap, relief tube, the diaphragm seat, diaphragm, the diaphragm clamping plate, guide pipe and valve seat, space between valve gap and the diaphragm seat forms the diaphragm control chamber, diaphragm is divided into the diaphragm control chamber that under the control room and diaphragm the control room on the diaphragm, structure characteristic of the present utility model is: be provided with on the valve gap of soil discharging electromagnetic valve and open, close the two-position two-way solenoid valve of control action, the balance cross over pipe and the hand control valve of band modulating valve, its balance cross over pipe upper end communicates with the valve gap top, and the lower end communicates with diaphragm seat lower end; Valve body is provided with the valve body that can directly dredge the backwash interface of cleaning and form four-way formula structure; Be equipped with corresponding pressure equalizing orifice on diaphragm that is provided with between diaphragm seat and the valve gap and the diaphragm clamping plate and make it to form two chambers equilibrium structure; Flap and valve rod are overall structure, and the sealing contact surface of its flap and valve seat is the stainless steel gland conical surface, removable groove rubber seal of assembling on flap; Valve seat is the tubular gland valve seat of stainless steel conical seal (contact) face; Have mud hole on the diaphragm seat, the deslagging plug is housed in the mud hole, be provided with guide ledges in the diaphragm seat, the lengthening guide pipe is set in guide ledges, guide pipe length is equal to or slightly less than the valve inlet latus rectum; Be provided with return spring in the valve rod, return spring top is provided with the spring guard bar, spring guard bar top and valve gap Joint, dual combined guided sealing structure unit is arranged on the described valve rod, this dual combined guided sealing structure unit is made of guide pipe, nonmetal wear-resistant guiding ring and wear-resisting O-ring seals, and is wherein close

On diaphragm and diaphragm clamping plate, be drilled with several pressure equalizing orifices, after two-position two-way solenoid valve is closed, the driven medium of following chamber can enter in the chamber by equalizing orifice, makes upper and lower chamber pressure realize self balancing, and spool is slow decline throttle down under the effect of gravity at return spring and spool.Solved the problem that causes flap that valve seat is produced impact force when general membrane type quick-opening mud valve promotes spool pressure pass valve by driven medium and make flap and valve seat be easy to damage.The balance cross over pipe that modulating valve is housed is set between diaphragm seat and valve gap, can adjusts the diaphragm control pressure balance speed in control room up and down easily by the aperture of modulating valve.

On the opposite of soil discharging valve import the backwash interface is set,, must removes the problem that valve just can be dredged cleaning after having solved the line clogging of general conventional soil discharging valve spoil disposal so that when the spoil disposal line clogging, can directly wash.

Guide ledges installing guide pipe at the diaphragm seat, increase guiding length, the pilot centering performance is improved greatly, solved general conventional diaphragm type soil discharging valve pilot centering curtailment, flap and the valve seat leakage that misplaces easily when valve closing, and flap, valve seat are damaged easily, influence the valve problem in working life.Flap on valve seat and the valve body is adopted the stainless steel gland conical surface sealing means of milling.

Nonmetal wear-resistant guiding slip ring and wear-resisting O-ring seals are set in guide pipe form dual combined guided sealing; behind O RunddichtringO wear out failure; nonmetal wear-resisting slip ring still can play the guiding protective action to valve rod; after having solved general conventional diaphragm type soil discharging valve O-ring seals wear out failure; valve rod and guide sleeve inwall produce hard grind and wipe, and make valve rod, guide sleeve serious wear cause the problem that valve can not reliably working.

In diaphragm seat bottom mud hole is set, when the needs deslagging, as long as the deslagging plug is backed out, can utilize the driven medium pressure fluid will be deposited on outside the foreign material expulsion valve such as silt particle, anvil cinder of diaphragm seat bottom, solved the silt particle of deposition in the general conventional diaphragm type soil discharging valve diaphragm seat, foreign material such as anvil cinder can't be discharged cumulative, very easily enter and cause valve rod and the wearing and tearing of sealing guiding element even stuck problem in the guide sleeve.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is dual combined guided seal arrangement enlarged diagram.

Embodiment

Referring to accompanying drawing 1 and accompanying drawing 2, the two chambers of a kind of diaphragm type balanced rapid-open soil discharging electromagnetic valve, it comprises valve body 2, flap 1, valve rod 4, valve gap 12, solenoid valve 13, relief tube 11, diaphragm seat 9, diaphragm 18, diaphragm clamping plate 20, guide pipe 22 and valve seat 25, space between valve gap 12 and the diaphragm seat 9 forms the diaphragm control chamber, diaphragm 18 is divided into the diaphragm control chamber that under the control room 17 and diaphragm control room 8 on the diaphragm, and structure characteristic of the present utility model is: two-position two-way solenoid valve 13 and hand control valve 14 that the open and close control action is set on the valve gap 12 of soil discharging electromagnetic valve; Valve body 2 is provided with the valve body that can directly dredge the backwash interface 3 of cleaning and form four-way formula structure; Be equipped with corresponding pressure equalizing orifice 11 on diaphragm 18 that is provided with between diaphragm seat 9 and the valve gap 12 and the diaphragm clamping plate 20 and make it to form pair diaphragm control chamber of chambers equilibrium structure; Between diaphragm seat 9 and valve gap 12, be provided with the balance cross over pipe 27 of band modulating valve 26, can adjust the pressure balance speed that diaphragm is controlled upper and lower control room easily by changing the aperture of modulating valve 26; Flap 1 is an overall structure with valve rod 4, its flap 1 is the stainless steel gland conical surface with the sealing contact surface of valve seat 25, removable groove rubber seal 28 of assembling on flap 1, the groove that is about to groove rubber seal 28 is nested on the flap, and rely on himself contractile force to be fastened on the flap, when the groove rubber seal damages, needn't dismantle valve, the groove rubber seal that only needs directly more to renew from valve export gets final product.Described valve seat 25 is the tubular valve seat of stainless steel conical seal (contact) face; Have mud hole 6 on the diaphragm seat 9, deslagging plug 7 is housed in the mud hole 6, be provided with guide ledges 21 in the diaphragm seat 9, lengthening guide pipe 22 is set in guide ledges 21, guide pipe 22 length are slightly less than or equal the valve inlet latus rectum; Be provided with return spring 24 in the valve rod 4, return spring 24 tops are provided with spring guard bar 16, spring guard bar 16 tops and valve gap 12 Joints, dual combined guided sealing structure unit is arranged on the described valve rod 4, its dual combined guided sealing structure unit is that guide pipe 22, nonmetal wear-resistant guiding ring 23 and wear-resisting O-ring seals 5 constitute, wherein seal ring 5 is inlaid in the guide ring 23, and guide ring 23 is inlaid in the guide pipe 22 upper and lower stomidiums.

On the guide ledges 21 on the diaphragm seat 9 guide pipe 22 is housed, guide link 23 and O-ring seals 5 assembly parties are housed in 22 liang of stomidiums of guide pipe.Valve rod 4 passes guide link 23, O-ring seals 5, diaphragm clamping plate 20 and the fastening connection of diaphragm 18 usefulness nuts in the guide pipe 22, and return spring 24 is housed in the valve rod 4, and when valve was in closed condition, 25 one-tenth conical surfaces of flap 1 and valve seat were close to sealing.Diaphragm seat 9 and valve body 2, diaphragm seat 9 adopts Bolt Connection with diaphragm 18 and valve gap 12, forms control room 17 on the diaphragm between diaphragm 18 and the valve gap 12; Form control room 8 under the diaphragm between diaphragm seat 9 and the diaphragm 18.Be provided with the relief tube 15 that communicates with control room 17 on the diaphragm in valve gap 12 upper ends, two-position two-way solenoid valve 13 and hand control valve 14 are housed on the relief tube 15, the spring guard bar 16 that is enclosed within the return spring 24 is housed on valve gap 12.The lower end of diaphragm seat 9 is provided with driven medium inlet 19 and deslagging outlet 6, in the deslagging outlet 6 deslagging plug 7 is housed.

When the two chambers of this diaphragm type balanced rapid-open soil discharging electromagnetic valve uses, driven medium inserts from medium import 19, when valve is in closed condition, owing to control room 8 under control room on the diaphragm 17 and the diaphragm can reach pressure balance by pressure equalizing orifice 11, balance cross over pipe 27, on the diaphragm under control room 17 and the diaphragm medium in the control room 8 all keep the static pressure of driven medium, so do not have pressure reduction between the control room 8 under control room 17 and the diaphragm on the diaphragm.When solenoid valve 13 or hand control valve 14 are opened, medium on the diaphragm in the control room 17 is discharged through relief tube 15, solenoid valve 13 or hand control valve 14, control room 17 pressure reduce rapidly on the diaphragm, thereby under diaphragm, form very big pressure difference on control room 8 and the diaphragm between the control room 17, driven medium is injected under the diaphragm control room 8 and is promoted diaphragm 18 and drives spools 10 and move upward, and realizes the unlatching of valve; When solenoid valve 13 or hand control valve 14 are closed, on the diaphragm under control room 17 and the diaphragm control room 8 reach pressure balance again by pressure equalizing orifice 11, balance cross over pipe 27, this moment spool 10 at return spring 24 and spool 10 under the effect of gravity, spool 10 moves downward, medium under the diaphragm in the control room 8 flows on the diaphragm in the control room 17 gradually by pressure equalizing orifice 11, balance cross over pipe 27, fit up to flap 1 and valve seat 25, make valve realize Slow Close.

Claims (1)

1, the two chambers of a kind of diaphragm type balanced rapid-open soil discharging electromagnetic valve, it comprises valve body (2), flap (1), valve rod (4), valve gap (12), relief tube (11), diaphragm seat (9), diaphragm (18), diaphragm clamping plate (20), guide pipe (22) and valve seat (25), space between valve gap (12) and the diaphragm seat (9) forms the diaphragm control chamber, diaphragm (18) is divided into control room (8) under control room on the diaphragm (17) and the diaphragm with the diaphragm control chamber, and structure characteristic of the present utility model is:

The two-position two-way solenoid valve (13) of open and close control action, balance cross over pipe (27), the hand control valve (14) of band modulating valve (26) are set on the valve gap of A, described soil discharging electromagnetic valve (12), its balance cross over pipe (27) upper end communicates with the valve gap top, and the lower end communicates with diaphragm seat (9) lower end;

Thereby B, described valve body (2) are provided with the valve body that can directly dredge the backwash interface (3) of cleaning form four-way formula structure;

Be equipped with corresponding pressure equalizing orifice (11) on diaphragm (18) that is provided with between C, described diaphragm seat (9) and the valve gap (12) and the diaphragm clamping plate (20) and make it to form two chambers equilibrium structure of separating with diaphragm;

D, described flap (1) are overall structure with valve rod (4), its flap (1) is the stainless steel gland conical surface with the sealing contact surface of valve seat (25), go up an assembling removable groove rubber seal (28) at flap (1), described valve seat (25) is the tubular gland valve seat of stainless steel conical seal (contact) face;

Have mud hole (6) on E, the described diaphragm seat (9), deslagging plug (7) is housed in the mud hole (6), be provided with guide ledges (21) in the diaphragm seat (9), lengthening guide pipe (22) is set in guide ledges (21), guide pipe (22) length is equal to or less than the valve inlet latus rectum;

Be provided with return spring (24) in F, the described valve rod (4), return spring (24) top is provided with spring guard bar (16), spring guard bar (16) top and valve gap (12) Joint, dual combined guided sealing structure unit is arranged on the described valve rod (4), this dual combined guided sealing structure unit is made of guide pipe (22), nonmetal wear-resistant guiding ring (23) and wear-resisting O-ring seals (5), wherein seal ring (5) is inlaid in the guide ring (23), and guide ring (23) is inlaid in the upper and lower stomidium of guide pipe (22).

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