CN2777313Y - Sealed special pressure-reducing valve for water heater - Google Patents
Sealed special pressure-reducing valve for water heater Download PDFInfo
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- CN2777313Y CN2777313Y CN 200520055394 CN200520055394U CN2777313Y CN 2777313 Y CN2777313 Y CN 2777313Y CN 200520055394 CN200520055394 CN 200520055394 CN 200520055394 U CN200520055394 U CN 200520055394U CN 2777313 Y CN2777313 Y CN 2777313Y
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Abstract
The utility model relates to a sealed special pressure reducing valve for a water heater, which is practical and reliable and has high stability. The pressure reducing valve comprises a valve body, an end cover, a piston and a pressure spring. The utility model is characterized in that the valve body is provided with a valve chamber with the end cover and a piston hole communicated with the valve chamber, the piston with an annular sealing ring is arranged in the piston hole, the pressure spring is arranged between the piston and the valve body, and a channel communicated with the atmosphere is arranged at the lower part of the piston hole. A control rod which extends to the inside of the valve chamber is arranged at the inner side of the piston, and the control rod is provided with racks matched with teeth on the lever. The inside of the valve chamber is provided with a valve core which is provided with valve glue and can slide. A poking fork at the trail of the short arm of the lever pivoted to the valve body is fastened with a deflector rod on the valve core to make the piston open or close a water inlet by controlling the valve glue through the lever.
Description
Technical field
The utility model relates to a kind of water heater reduction valve, the special-purpose reduction valve of particularly a kind of closed water heater.
Background technique
Among the disclosed Chinese patent bulletin CN2296438Y a kind of " multi-functional pressure internally piloted valve " disclosed on November 4th, 1998, comprise valve body, spool and pressure spring, its structure is to be provided with spool and Sealing in the valve pocket of valve body, and the water intake and the water outlet at valve body two ends are equipped with screw thread; Spool is the "T"-shaped piston of axial section, and its big end is towards water outlet, and small end is towards water intake; One side of valve pocket is provided with the passage that connects entery and delivery port; Position, the large and small footpath of piston all becomes sealed type to cooperate with valve pocket, the valve pocket between the sealing formula matching part communicates with atmosphere, and is provided with pressure spring; Sealing is located between piston path end face and the water intake; It is used for the closed water heater when supplying water, can be automatically with the pressure control in the water tank below a certain rating value.In order to reach accurate constant voltage purpose, the sectional area of this constant voltage reduction valve water intake should be much smaller than the area of the big end end face of piston, and generally speaking, in order to guarantee that water heater has enough water-outlet quantitys, the sectional area of water intake is about more than 1 square centimeter, if the area of the big end end face of piston is 20 square centimeters, pressure in the water-heater water tank should be about 1 kg/cm when water heater water outlet (otherwise seem unable), so, the elastic force of its pressure spring is approximately 20 kilograms, the spring of so big elastic force can cause the reduction valve volume excessive, the constant voltage reduction valve that uses large volume in the family expenses water heater is a thorough reality not, and because must be sealed and matched between spool and the valve body, there is certain frictional force between spool and the valve body, when the user adjusts water flow, spool is the flow of synchronization regulation water intake fully, and its stiction is greater than kinetic force of friction, may exceed its scope that should move in case spool moves and cause the instability of discharge pressure, and make spool be in the state of vibration back and forth, so, the shortcoming of this constant voltage reduction valve is unstable, impracticable, this also is a reason of always not using this reduction valve at present in the closed water heater.
Among the disclosed Chinese patent bulletin CN2298393Y a kind of " Pressure reducing valve for hot water " disclosed on November 25th, 1998, it is with the corresponding high pressure intake of pressure regulation stem valve sheet end, pressure regulation stick force arm overlap joint diaphragm newel, regulate low pressure delivery saliva pressure and have discharge opening, the inner container of electric water heater hot water exit who makes in the connection of low pressure delivery mouth can take over the meaning valve and multiple-way duct carries out switch; It adopts typical diaphragm type structure, and between diaphragm and valve block, be connected so that hyperbaric chamber and low-pressure cavity all are positioned at diaphragm one side with lever, thereby reduce the chance of leaking, but this Lever type Placement can not effectively reduce the elastic force of pressure adjusting spring, reason is that the moving range of diaphragm when the power arm of lever increases also must increase simultaneously, so diaphragm area also should increase (having limited the swing of power arm otherwise the moving range of diaphragm central point is big inadequately), thereby also corresponding increase of the elastic force of Regulation spring; In the reality, this reduction valve can only be used for that pressure reduction scope such as bottle gas is big, valve block and suction port (water intake that is equivalent to this patent CN2298393Y) open the less occasion of displacement, if be used for the closed water heater, then its reliability is extremely low, and it is impracticable, so up to the present, use it for closed water heater's decompression without any enterprise at all.
Summary of the invention
The purpose of this utility model is poor reliability, the problem of unstable that exists in the existing reduction valve in order to solve, and a kind of practicality, the special-purpose reduction valve of closed water heater reliable, that stability is high are provided.
Technological scheme:
First technological scheme that realizes the utility model purpose is: the special-purpose reduction valve of a kind of closed water heater, comprise valve body, end cap, piston and pressure spring, and it is characterized in that valve body is provided with valve pocket, the port envelope of valve pocket has end cap; Also be provided with the piston hole that communicates with valve pocket in the valve body, place the piston of band shape seal ring in the piston hole, be provided with pressure spring between the piston outside and the valve body, the piston hole bottom is provided with the passage that communicates with atmosphere; The piston inboard is provided with the controlling rod that stretches in the described valve pocket, and controlling rod one side is provided with tooth bar; Valve pocket is provided with water intake and water outlet, is provided with slidably spool over against the water inlet in valve pocket, and spool is fixed with valve glue over against valve pocket water intake one side, also is provided with the guiding rib that the slip to spool play the guiding role in the valve pocket; Be articulated with lever in the valve pocket of end cap inboard or valve body, the long-armed afterbody of lever is provided with tooth and cooperates with tooth bar on the described controlling rod, and the shift fork of lever short arm afterbody blocks the driving lever on the spool; Two sides of described controlling rod upper rack both sides are subjected to two sidewalls of described valve body valve pocket spacing, and the another side relative with tooth bar is subjected to another sidewall of described valve body valve pocket spacing on the controlling rod, sideshake when preventing that controlling rod is stressed and cause the damage of piston to the piston hole inwall.Certainly, being connected between lever short arm and the spool also can be adopted the meshing mode of tooth and tooth bar, and just it is unfavorable for the sealing of valve glue to water intake.Water intake connects running water pipe, water outlet connects closed water heater's inner bag, when the outlet valve of water heater is closed, hydraulic pressure in the valve pocket rises, the effect that piston overcomes pressure spring is outwards moved and is driven lever swing by controlling rod, lever is dialled spool to the water intake direction and is close to water intake and cuts off the passage that enters valve pocket through water intake up to valve glue, reduction valve cuts out, when the outlet valve of water heater is opened, water in the valve pocket makes drops in it through the water outlet outflow, piston moves inward under the pressure spring effect, and drive lever and make valve glue and water intake on the spool be separated to an equilibrium position along swing in the other direction, so that the water pressure invariableness in the valve pocket is in the pressure range of setting; The special-purpose reduction valve of closed water heater described in the utility model, when the long-armed and galianconism of lever bigger, the malleation lifting surface area of piston can design lessly, so the elastic force of its pressure spring also can be less, make the volume of reduction valve can become less, and piston is when driving spool and moving, the displacement amount of spool is far fewer than the displacement amount of piston, to be delivered to the influence that spool is moved reduced so the frictional force between piston and the piston hole moves the influence that causes to piston, thereby improved its reliability and stability.The effect that makes lever principle not only can be laborsaving but also can be improved the stability of reduction valve.Pressure when closing the water heater outlet valve and the water in the water tank heated in the water tank increases, and water tank should be provided with safety relief valve, and this safety relief valve also can be arranged on the described valve body certainly.
The special-purpose reduction valve of described closed water heater is characterized in that described piston hole passes described valve body, and piston hole is provided with screw thread near the valve body tail portion outside, and the screw thread of this screw thread and pressure regulating screw matches, and described pressure spring is arranged between piston and the screw.The position of adjusting screw is the pressure of can regulate pressure spring to piston, thereby regulates the constant voltage value of the special-purpose reduction valve of closed water heater.
The special-purpose reduction valve of described closed water heater is characterized in that the tooth bar on the described controlling rod has only a tooth, and the tooth of the long-armed afterbody of described lever is a teeth groove, is provided with limiting stopper in the valve pocket of described valve body to limit the displacement that controlling rod is flapped toward the lever direction.Sideshake when preventing that controlling rod is stressed and cause the damage of piston to the piston hole inwall.
Second technological scheme that realizes the utility model purpose is: the special-purpose reduction valve of a kind of closed water heater, comprise valve body, end cap, piston and pressure spring, and it is characterized in that valve body is provided with valve pocket, the port envelope of valve pocket has end cap; Also be provided with the piston hole that communicates with valve pocket in the valve body, place the piston of band shape seal ring in the piston hole, be provided with pressure spring between the piston outside and the valve body, the piston hole bottom is provided with the passage that communicates with atmosphere; The piston inboard is provided with the controlling rod that stretches in the described valve pocket, and controlling rod one side is provided with tooth bar; Valve pocket is provided with water intake and water outlet, is provided with the plane and straight line guiding valve between valve pocket and water intake; Be articulated with lever in the valve pocket of end cap inboard or valve body, the long-armed afterbody of lever is provided with tooth and cooperates with tooth bar on the described controlling rod, and the shift fork of lever short arm afterbody blocks driving lever on the slide plate of described plane and straight line guiding valve; Two sides of described controlling rod upper rack both sides are subjected to two sidewalls of described valve body valve pocket spacing, and the another side relative with tooth bar is subjected to another sidewall of described valve body valve pocket spacing on the controlling rod, sideshake when preventing that controlling rod is stressed and cause the damage of piston to the piston hole inwall.Certainly, being connected between the slide plate of lever short arm and plane and straight line guiding valve also can be adopted the meshing mode of tooth and tooth bar, do not do to state at this more.Its working principle and first technological scheme similar is not described in detail in this.
The special-purpose reduction valve of described closed water heater is characterized in that described piston hole passes described valve body, and piston hole is provided with screw thread near the valve body tail portion outside, and the screw thread of this screw thread and pressure regulating screw matches, and described pressure spring is arranged between piston and the screw.
The special-purpose reduction valve of described closed water heater is characterized in that the tooth bar on the described controlling rod has only a tooth, and the tooth of the long-armed afterbody of described lever is a teeth groove, is provided with limiting stopper in the valve pocket of described valve body to limit the displacement that controlling rod is flapped toward the lever direction.
The 3rd technological scheme that realizes the utility model purpose is: the special-purpose reduction valve of a kind of closed water heater, comprise valve body, end cap, piston and pressure spring, and it is characterized in that valve body is provided with valve pocket, the port envelope of valve pocket has end cap; Also be provided with the piston hole that communicates with valve pocket in the valve body, place the piston of band shape seal ring in the piston hole, be provided with pressure spring between the piston outside and the valve body, the piston hole bottom is provided with the passage that communicates with atmosphere; The piston inboard is provided with the controlling rod that stretches in the described valve pocket, and controlling rod one side is provided with tooth bar; Valve pocket is provided with water outlet, is provided with the plane of rotation guiding valve between valve pocket and intake pipe, and the switch lever of this plane of rotation guiding valve stretches in the valve pocket, and the switch lever afterbody is provided with tooth and cooperates with tooth bar on the described controlling rod; Two sides of described controlling rod upper rack both sides are subjected to two sidewalls of described valve body valve pocket spacing, and the another side relative with tooth bar is subjected to another sidewall of described valve body valve pocket spacing on the controlling rod, sideshake when preventing that controlling rod is stressed and cause the damage of piston to the piston hole inwall.Its working principle and first technological scheme similar is not described in detail in this.
The special-purpose reduction valve of described closed water heater is characterized in that described piston hole passes described valve body, and piston hole is provided with screw thread near the valve body tail portion outside, and the screw thread of this screw thread and pressure regulating screw matches, and described pressure spring is arranged between piston and the screw.
The special-purpose reduction valve of described closed water heater is characterized in that the tooth bar on the described controlling rod has only a tooth, and the tooth of described switch lever afterbody is a teeth groove, is provided with limiting stopper in the valve pocket of described valve body to limit the displacement that controlling rod is flapped toward the switch lever direction.
The 4th technological scheme that realizes the utility model purpose is: the special-purpose reduction valve of a kind of closed water heater, comprise valve body, end cap, piston and pressure spring, and it is characterized in that valve body is provided with valve pocket, the port envelope of valve pocket has end cap; Have the water outlet that communicates with valve pocket on the end cap; Also be provided with the piston hole that communicates with valve pocket in the valve body, place the piston of band shape seal ring in the piston hole, be provided with pressure spring between the piston outside and the valve body, the piston hole bottom is provided with the passage that communicates with atmosphere; The other end relative with valve pocket on the valve body is provided with control chamber, and the port envelope of control chamber has enclosing cover; The controlling rod that stretch out in the piston outside passes the piston hole bottom and stretches in the control chamber, the controlling rod end is fixed with valve glue, cover outward over against valve Jiao Chu and have water intake, the controlling rod middle part is provided with O-ring seal with the contacting point of valve body, on the sidewall of control chamber, have along the axial bar shaped flow channel connection valve pocket of control chamber, utilize the flow of the mobile control of controlling rod through bar shaped flow channel inflow valve pocket.
Beneficial effect:
Owing to adopted technological scheme described in the utility model, wherein first and second technological schemes have added lever between the valve of piston and control water intake, and adopted the plane of rotation guiding valve to control the switch lever that it rotatablely moves in the 3rd technological scheme as inlet valve and piston, so first, in the second and the 3rd technological scheme, making frictional force between piston and the piston hole move the influence that causes to piston is delivered to the influence of valve reduced, thereby its reliability and stability have been improved, and the cross section of piston does not need too big, the elastic force of pressure spring is also little, and is practical.And in the 4th technological scheme, between valve pocket and control chamber, added the block of flow channel and control flow rate channel opening size, this flow channel can be designed as long strip, make the flow of piston unit's displacement distance control less, make between piston and the piston hole frictional force to piston move the influence that causes be delivered to the influence of valve reduced, thereby improved its reliability and stability.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structure principle chart of special-purpose reduction valve first technological scheme of closed water heater described in the utility model.
Fig. 2 is the structure principle chart of special-purpose reduction valve second technological scheme of closed water heater described in the utility model.
Fig. 3 is the structure principle chart of special-purpose reduction valve the 3rd technological scheme of closed water heater described in the utility model.
Fig. 4 is the structure principle chart of special-purpose reduction valve the 4th technological scheme of closed water heater described in the utility model.
Fig. 5 is the sectional view of Fig. 4 along the A--A line.
Fig. 6 is another embodiment's of special-purpose reduction valve second technological scheme of a closed water heater described in the utility model structure principle chart.
Mark among the figure: 100, limiting stopper, 131, controlling rod, 13, piston, 133, O-ring seal, 14, pressure spring, 112, piston hole, 141, pressure regulating screw, 113, passage, 172, adjusting screw, 171, pressure spring, 17, the valve pearl, 115, water-leaking hole, 114, spilled water hole, 11, valve body, 111, valve pocket, 116, guiding rib, 16, spool, 152, shift fork, 161, driving lever, 162, valve glue, 121, water intake, 12, end cap, 123, the wing, 124, pivot, 122, water outlet, 15, lever, 151, teeth groove, 132, ratch; 200, limiting stopper, 231, controlling rod, 202, water outlet, 233, shape shape seal ring, 23, piston, 212, piston hole, 24, pressure spring, 241, pressure regulating screw, 213, passage, 272, adjusting screw, 271, Regulation spring, 27, the valve pearl, 215, water-leaking hole, 21, valve body, 214, spilled water hole, 204, connect the hole, 28, slide plate, 281, through hole, 201, the water inlet, 292, the water inlet, 20, side cover, 252, shift fork, 280, press frame, 282, driving lever, 203, switch cavity, 29, still, 291, seal ring, 224, pivot, 223, the wing, 22, end cap, 25, lever, 211, valve pocket, 251, teeth groove, 232, ratch; 300, limiting stopper, 331, controlling rod, 333, O-ring seal, 33, piston, 312, piston hole, 34, pressure spring, 342, pressure regulating screw, 313, passage, 372, adjusting screw, 371, Regulation spring, 315, water-leaking hole, 37, the valve pearl, 314, spilled water hole, 31, valve body, 302, water outlet, 311, valve pocket, 3, inlet valve, 301, intake pipe, 32, end cap, 35, switch lever, 351, teeth groove, 332, ratch; 44, pressure spring, 411, piston hole, 46, O-ring seal, 405, through hole, 406, bar shaped flow channel, 407, limit dais, 409, control chamber, 491, water intake, 49, enclosing cover, 432, valve glue, 431, controlling rod, 41, valve body, 413, passage, 472, adjusting screw, 471, Regulation spring, 415, water-leaking hole, 47, valve pearl, 414, spilled water hole, 42, end cap, 421, water outlet, 43, piston, 401, valve pocket, 433, O-ring seal; 580, press frame, 582, driving lever, 591, seal ring, 59, still, 592, the water inlet, 581, through hole, 58, slide plate.
Embodiment:
Embodiment one, sees shown in Figure 1ly, belongs to the structure principle chart of first technological scheme.The special-purpose reduction valve of this closed water heater, as can be seen from Fig. 1, valve body 11 is provided with valve pocket 111, and end cap 12 is fixed with valve body 11 usefulness screws and valve pocket 111 is sealed; Also be provided with piston hole 112 in the valve body 11, piston hole 112 is provided with screw thread near valve body 11 tail portion outside, the screw thread of this screw thread and pressure regulating screw 141 matches, pressure spring 14 is arranged between piston 13 and the screw 141, piston 13 band shape seal rings 133, valve body 11 also is provided with the safety valve that is made of spilled water hole 114, valve pearl 17, Regulation spring 171 and adjusting screw 172, and piston hole 112 communicates with atmosphere by the passage 113 and the water-leaking hole 115 of its underpart; End cap 12 is provided with water intake 121 and water outlet 122, and the spool 16 that front end is fixed with valve glue 162 can horizontally slip under the guiding of guiding rib 116, and spool is provided with driving lever 161; Be extended with the wing 123 from end cap, lever 15 is articulated on the pivot 124, shift fork 152 on the galianconism of lever 15 blocks the driving lever 161 of spool, the long-armed teeth groove 151 that has of lever 15, ratch 32 on the controlling rod 131 (being equivalent to have only the tooth bar of a tooth) snaps in the teeth groove 151, also be provided with in the valve body limiting stopper 100 with other three sidewalls of valve body to 131 spacing leading roles of controlling rod.Water intake 121 connects running water pipe, water outlet 122 connects closed water heater's inner bag.State shown in Figure 1 is the finished product state of the special-purpose reduction valve of closed water heater, also is not installed on the water heater; When hydraulic pressure in piston 13 is subjected to valve pocket 111 and pressure spring 14 effects are mobile down, can drive lever 15 by the ratch 132 that is positioned at teeth groove 151 on the controlling rod 131 around pivot 124 swings, shift fork 152 on lever 15 galianconism is stirred the driving lever on the spool 16 and is driven spool and move, the control that valve glue 162 is realized water intake 121.If tooth bar is set on controlling rod 131 in the present embodiment and tooth is set and this tooth bar matches at lever 15 long-armed afterbodys, then can become another embodiment, this is that those skilled in the art can realize on the utility model basis, does not do to state at this more.
Embodiment two, see shown in Figure 2ly, belong to the structure principle chart of second technological scheme.As can be seen from Fig. 2, present embodiment is slightly different with Fig. 1 embodiment, wherein except being provided with valve pocket 211, also be provided with the switch cavity 203 that is used to place the plane and straight line guiding valve on the valve body 21 of present embodiment in a side, switch cavity 203 is placed seal ring 291 from inside to outside, bring the ceramic still 29 in water hole 292 into, the ceramic sliding blade 28 of band through hole 281 and driving lever 282, pottery is pressed frame 280, side cover 20, have the water intake 201 that connects running water pipe on the side cover 20, be tightly connected between side cover 20 and the valve body 21 and will press frame 280, slide plate 28, still 28 and seal ring 291 compress, it is the force of sliding frictions that reduce slide plate 28 that pottery is pressed the effect of frame 280, slide plate 28 is move left and right when lever 25 swings, make 292 dislocation of through hole 281 and water inlet or contraposition realize closing of valve pocket 211 and water intake 201 or be communicated with, and water outlet 202 is arranged on the valve body 21, other structure is identical with Fig. 1, its principle is also similar with Fig. 1 embodiment, does not do to state at this more.The position of seal ring, still, slide plate and pressure frame among Fig. 2 in the switch cavity 203 also can be transposed to shown in Figure 6, and each mark is seen among the above-mentioned figure one section of mark among Fig. 6, and this is that those skilled in the art are understandable on the utility model basis, is not described in detail in this.
Embodiment three, see shown in Figure 3ly, belong to the structure principle chart of the 3rd technological scheme.Present embodiment is slightly different with the embodiment of Fig. 2, it is to have replaced the plane and straight line guiding valve with the plane of rotation guiding valve, so, what the controlling rod 331 in the present embodiment was controlled is the switch lever 35 of inlet valve 3, inlet valve 3 is plane of rotation guiding valves, this plane of rotation guiding valve is open on April 29th, 1998 disclosed Chinese patent C2280179Y, see Fig. 3, advancing of inlet valve 3, water outlet communicates with intake pipe 301 and valve pocket 311 respectively, inlet valve 3 is in open mode among Fig. 3, and tap water can be through intake pipe 301, inlet valve 3, valve pocket 311 and water outlet 302 flow into water heater liner.Other structure is identical with Fig. 2, and its principle is also similar with Fig. 2 embodiment, does not do to state at this more.
Embodiment four, see shown in Figure 4ly, belong to the structure principle chart of the 4th technological scheme.As can be seen from Fig. 4, the valve body 41 of the special-purpose reduction valve of this closed water heater is provided with valve pocket 411, control chamber 409, have water outlet 421 on the end cap 42, enclosing cover 49 has water intake 491, the piston hole 411 that is placed with piston 43 communicates with valve pocket 401, piston 43 has O-ring seal 433, be provided with pressure spring 44 between piston 43 and the valve body 41, piston hole 411 communicates with atmosphere by passage 413 and water-leaking hole 415, and end cap 42 inboards are provided with limit dais 407 and are used to limit piston 43 and skid off piston hole to the maximum displacement of valve pocket 401 directions to prevent piston; The controlling rod 431 that stretch out in piston 43 outsides passes the piston hole bottom and stretches in the control chamber 409, and the controlling rod end is fixed with valve glue 432, and the contacting point of controlling rod 431 middle parts and valve body is provided with O-ring seal 46; Be provided with the bar shaped flow channel of axially offering along control chamber 409 406 at control chamber 409 inwalls, flow channel 406 communicates with valve pocket 401 by through hole 405, can see the cross section of bar shaped flow channel 406 from Fig. 5, the controlling rod 431 among Fig. 4 is positioned at one section water flow of controlling through bar shaped flow channel 406 inflow through holes 405 of control chamber 409 when controlling rod moves; Valve body 41 is provided with the safety valve that is made of spilled water hole 414, valve pearl 47, Regulation spring 471 and adjusting screw 472.Present embodiment, be on the basis of the CN2296438Y patent in the above-mentioned background technology, mentioned, add a flow control mechanism that is different from valve glue 432 and water intake 491 formations, newly-increased flow control mechanism is made of long and narrow bar shaped flow channel 406 and controlling rod 431,4315 pairs of flow channel 406 of controlling rod only play the flow control effect, and seal action still leans on the sealing of 432 pairs of water intakes 491 of valve glue, because bar shaped flow channel 406 is long and narrow strip structure, so, little with the changing value of the water flow of the corresponding bar shaped flow channel of flowing through of each unit displacement amount of controlling rod 431, thus instability reduced because of the control of the influence of the frictional force between piston 43 and the piston hole 411 build-up of pressure.
Claims (10)
1, the special-purpose reduction valve of a kind of closed water heater comprises valve body, end cap, piston and pressure spring, it is characterized in that valve body is provided with valve pocket, and the port envelope of valve pocket has end cap; Also be provided with the piston hole that communicates with valve pocket in the valve body, place the piston of band shape seal ring in the piston hole, be provided with pressure spring between the piston outside and the valve body, the piston hole bottom is provided with the passage that communicates with atmosphere; The piston inboard is provided with the controlling rod that stretches in the described valve pocket, and controlling rod one side is provided with tooth bar; Valve pocket is provided with water intake and water outlet, is provided with slidably spool over against the water inlet in valve pocket, and spool is fixed with valve glue over against valve pocket water intake one side, also is provided with the guiding rib that the slip to spool play the guiding role in the valve pocket; Be articulated with lever in the valve pocket of end cap inboard or valve body, the long-armed afterbody of lever is provided with tooth and cooperates with tooth bar on the described controlling rod, and the shift fork of lever short arm afterbody blocks the driving lever on the spool; Two sides of described controlling rod upper rack both sides are subjected to two sidewalls of described valve body valve pocket spacing, and the another side relative with tooth bar is subjected to another sidewall of described valve body valve pocket spacing on the controlling rod, sideshake when preventing that controlling rod is stressed and cause the damage of piston to the piston hole inwall.
2, according to the special-purpose reduction valve of the described closed water heater of claim 1, it is characterized in that described piston hole passes described valve body, piston hole is provided with screw thread near the valve body tail portion outside, and the screw thread of this screw thread and pressure regulating screw matches, and described pressure spring is arranged between piston and the screw.
3, according to the special-purpose reduction valve of the described closed water heater of claim 1, it is characterized in that the tooth bar on the described controlling rod has only a tooth, the tooth of the long-armed afterbody of described lever is a teeth groove, is provided with limiting stopper in the valve pocket of described valve body to limit the displacement that controlling rod is flapped toward the lever direction.
4, the special-purpose reduction valve of a kind of closed water heater comprises valve body, end cap, piston and pressure spring, it is characterized in that valve body is provided with valve pocket, and the port envelope of valve pocket has end cap; Also be provided with the piston hole that communicates with valve pocket in the valve body, place the piston of band shape seal ring in the piston hole, be provided with pressure spring between the piston outside and the valve body, the piston hole bottom is provided with the passage that communicates with atmosphere; The piston inboard is provided with the controlling rod that stretches in the described valve pocket, and controlling rod one side is provided with tooth bar; Valve pocket is provided with water intake and water outlet, is provided with the plane and straight line guiding valve between valve pocket and water intake; Be articulated with lever in the valve pocket of end cap inboard or valve body, the long-armed afterbody of lever is provided with tooth and cooperates with tooth bar on the described controlling rod, and the shift fork of lever short arm afterbody blocks driving lever on the slide plate of described plane and straight line guiding valve; Two sides of described controlling rod upper rack both sides are subjected to two sidewalls of described valve body valve pocket spacing, and the another side relative with tooth bar is subjected to another sidewall of described valve body valve pocket spacing on the controlling rod, sideshake when preventing that controlling rod is stressed and cause the damage of piston to the piston hole inwall.
5, according to the special-purpose reduction valve of the described closed water heater of claim 4, it is characterized in that described piston hole passes described valve body, piston hole is provided with screw thread near the valve body tail portion outside, and the screw thread of this screw thread and pressure regulating screw matches, and described pressure spring is arranged between piston and the screw.
6, according to the special-purpose reduction valve of the described closed water heater of claim 4, it is characterized in that the tooth bar on the described controlling rod has only a tooth, the tooth of the long-armed afterbody of described lever is a teeth groove, is provided with limiting stopper in the valve pocket of described valve body to limit the displacement that controlling rod is flapped toward the lever direction.
7, the special-purpose reduction valve of a kind of closed water heater comprises valve body, end cap, piston and pressure spring, it is characterized in that valve body is provided with valve pocket, and the port envelope of valve pocket has end cap; Also be provided with the piston hole that communicates with valve pocket in the valve body, place the piston of band shape seal ring in the piston hole, be provided with pressure spring between the piston outside and the valve body, the piston hole bottom is provided with the passage that communicates with atmosphere; The piston inboard is provided with the controlling rod that stretches in the described valve pocket, and controlling rod one side is provided with tooth bar; Valve pocket is provided with water outlet, is provided with the plane of rotation guiding valve between valve pocket and intake pipe, and the switch lever of this plane of rotation guiding valve stretches in the valve pocket, and the switch lever afterbody is provided with tooth and cooperates with tooth bar on the described controlling rod; Two sides of described controlling rod upper rack both sides are subjected to two sidewalls of described valve body valve pocket spacing, and the another side relative with tooth bar is subjected to another sidewall of described valve body valve pocket spacing on the controlling rod, sideshake when preventing that controlling rod is stressed and cause the damage of piston to the piston hole inwall.
8, according to the special-purpose reduction valve of the described closed water heater of claim 7, it is characterized in that described piston hole passes described valve body, piston hole is provided with screw thread near the valve body tail portion outside, and the screw thread of this screw thread and pressure regulating screw matches, and described pressure spring is arranged between piston and the screw.
9, according to the special-purpose reduction valve of the described closed water heater of claim 7, it is characterized in that the tooth bar on the described controlling rod has only a tooth, the tooth of described switch lever afterbody is a teeth groove, is provided with limiting stopper in the valve pocket of described valve body to limit the displacement that controlling rod is flapped toward the switch lever direction.
10, the special-purpose reduction valve of a kind of closed water heater comprises valve body, end cap, piston and pressure spring, it is characterized in that valve body is provided with valve pocket, and the port envelope of valve pocket has end cap; Have the water outlet that communicates with valve pocket on the end cap; Also be provided with the piston hole that communicates with valve pocket in the valve body, place the piston of band shape seal ring in the piston hole, be provided with pressure spring between the piston outside and the valve body, the piston hole bottom is provided with the passage that communicates with atmosphere; The other end relative with valve pocket on the valve body is provided with control chamber, and the port envelope of control chamber has enclosing cover; The controlling rod that stretch out in the piston outside passes the piston hole bottom and stretches in the control chamber, the controlling rod end is fixed with valve glue, cover outward over against valve Jiao Chu and have water intake, the controlling rod middle part is provided with O-ring seal with the contacting point of valve body, on the sidewall of control chamber, have along the axial bar shaped flow channel connection valve pocket of control chamber, utilize the flow of the mobile control of controlling rod through bar shaped flow channel inflow valve pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055394 CN2777313Y (en) | 2005-03-03 | 2005-03-03 | Sealed special pressure-reducing valve for water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055394 CN2777313Y (en) | 2005-03-03 | 2005-03-03 | Sealed special pressure-reducing valve for water heater |
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| Publication Number | Publication Date |
|---|---|
| CN2777313Y true CN2777313Y (en) | 2006-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520055394 Expired - Fee Related CN2777313Y (en) | 2005-03-03 | 2005-03-03 | Sealed special pressure-reducing valve for water heater |
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| Country | Link |
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| CN (1) | CN2777313Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994577A (en) * | 2013-02-18 | 2014-08-20 | 海尔集团公司 | Water heater water tank with automatic control water feeding device arranged on side |
| CN109382267A (en) * | 2018-11-17 | 2019-02-26 | 大连华工创新科技股份有限公司 | A kind of glue valve gluing head or glue injecting head for opening simultaneously or closing |
| CN110236718A (en) * | 2019-07-08 | 2019-09-17 | 小熊电器股份有限公司 | A kind of tooth flusher |
| CN112081973A (en) * | 2020-09-30 | 2020-12-15 | 上海燃料电池汽车动力系统有限公司 | Lever type pressure reducing valve and regulating and controlling method thereof |
-
2005
- 2005-03-03 CN CN 200520055394 patent/CN2777313Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994577A (en) * | 2013-02-18 | 2014-08-20 | 海尔集团公司 | Water heater water tank with automatic control water feeding device arranged on side |
| CN103994577B (en) * | 2013-02-18 | 2018-05-11 | 海尔集团公司 | Water heater water tank with automatic control water feeding device arranged on side |
| CN109382267A (en) * | 2018-11-17 | 2019-02-26 | 大连华工创新科技股份有限公司 | A kind of glue valve gluing head or glue injecting head for opening simultaneously or closing |
| CN109382267B (en) * | 2018-11-17 | 2023-12-01 | 大连华工创新科技股份有限公司 | Glue valve gluing head or glue injection head capable of being opened or closed simultaneously |
| CN110236718A (en) * | 2019-07-08 | 2019-09-17 | 小熊电器股份有限公司 | A kind of tooth flusher |
| CN110236718B (en) * | 2019-07-08 | 2024-02-13 | 小熊电器股份有限公司 | Tooth washing device |
| CN112081973A (en) * | 2020-09-30 | 2020-12-15 | 上海燃料电池汽车动力系统有限公司 | Lever type pressure reducing valve and regulating and controlling method thereof |
| CN112081973B (en) * | 2020-09-30 | 2022-06-17 | 上海燃料电池汽车动力系统有限公司 | Lever type pressure reducing valve and regulating and controlling method thereof |
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