CN106948133B

CN106948133B - A kind of reset valve on volume control device

Info

Publication number: CN106948133B
Application number: CN201710200964.4A
Authority: CN
Inventors: 周先平
Original assignee: Changle Lizhi Products Design Co Ltd
Current assignee: Beijing Valve General Factory Co ltd
Priority date: 2014-09-11
Filing date: 2014-09-11
Publication date: 2019-03-29
Anticipated expiration: 2034-09-11
Also published as: CN107143656A; CN105442262A; CN106948133A; CN107143656B; CN105442262B

Abstract

A kind of reset valve on volume control device is mainly made of jet mixer, reset valve and flow valve；After washing machine starts water inlet, press reset valve, negative pressure will be generated at the narrow position of jet mixer, reset valve is sucked using negative pressure, it is kept open it, negative pressure is transmitted to flow valve by resetting valve, open flow valve, the channel for making detergent reach jet mixer is opened, under the action of negative pressure, detergent continuously flows into is mixed into the suitable liquid detergent of concentration with water in jet mixer, after water flow stops, resetting valve, reset returns to closed state upwards under the action of reset spring, when intaking again, if not pressing reset valve, also flow valve sucking detergent cannot be opened, valve addition detergent only is resetted by pressing in the stage for needing to add detergent to realize.

Description

A kind of reset valve on volume control device

Technical field

The present invention relates to the additive amounts that one kind can control detergent during washing machine inflow, make detergent and water energy The reset valve being enough mixed on the volume control device of the suitable liquid detergent of concentration, the detergent for belonging to washing machine launch skill Art.

Background technique

The principle of laundry clothes: no matter using machine washing or hand washing, ideal way is will first to wash Ji to be fabricated to concentration Properly, uniform cleaning solution, then the clothing investment that will be washed stir evenly, by the immersion of cleaning solution, with the tension of cleaning solution Effect separates dirt and clothing, could more effectively play the effect of washing Ji.

Should be with the correct clothes washing method of washing machine: first booting discharges water, and investment detergent and water are sufficiently mixed into concentration Uniform cleaning solution puts into clothing washing by soaking again.

But the time is needed due to discharging water, people are in order to save trouble, typically directly by the washing tub of clothing investment washing machine, with warp A certain amount of detergent of investment is tested, beginning to do washing into water takes.Due to not being to carry out the cleaning solution of even concentration in advance to put clothing again Object impregnates, and after causing clothing to be saturated with water, cleaning solution is gone between being just hard to permeate into the fiber of clothing, reduces the cleaning of cleaning solution Effect, so usually there is the situation for washing completely, also, when the detergent due to high concentration and part contact with clothing are longer Between, or even the phenomenon that decolourize.

Although many washing machines are designed with the function by detergent tank putting detergent, these designs are mostly First this detergent done washing is put into detergent tank before laundry and restarts washing machine inflow, it is sharp during water inlet Washing tub is injected after detergent therein is carried out simply dilution with a part of water impact detergent tank, is obtained so not Be be sufficiently mixed, the cleaning solution of even concentration.Also, it every time can only be to washing required for the primary laundry of addition in detergent tank Dosage.

It in addition is totally-enclosed when tumbling-box washing machine work most absolutely, if first to discharge water carries out washing for even concentration Washing liquid, to launch clothing again substantially impossible, because opening door water can overflow.

A kind of detergent is disclosed in the patent document of Patent No. 201110120512.8 to launch and mixing arrangement, The discharging gate that a duckbill has been disposed in the discharge port of charging basket, under the action of motor by detergent get into turbine stirrer with Water mixing, advantage is can to blend uniform cleaning solution, and deficiency is that elasticity can weaken after long-time use, the discharging of duckbill Mouth poor sealing performance, and when motor does not work, detergent under gravity may also automatic safety enter turbine stirrer.

It is, thus, sought for one kind can make detergent and water be mixed into the suitable liquid detergent of concentration, and structure is more Reasonable detergent throwing device.

Summary of the invention

The object of the present invention is to provide one kind, and detergent and water can be made to be mixed into the suitable liquid detergent of concentration, and ties The more reasonable detergent throwing device of structure.

The technical scheme is that a kind of reset valve on volume control device, mainly by reset valve seat 21, work Plug 22, stop bit seat 23, reset spring 24 form；The volume control device is mainly by jet mixer 1, reset valve 2 and stream Valve 3 is measured to form；Jet mixer 1 uses Venturi tube, and input end is connected with water inlet pipe, and outlet end is connected with washing tub；It is penetrating Stream mixer narrow positions is equipped with the outwardly projecting imbibition nozzle 11 and vacuum noz(zle) 12 being connected to jet mixer inside；Described The hollow cylindrical that valve seat 21 is upper opening is resetted, outwardly protruding suction nozzle 211, air inlet are equipped on the bottom wall for resetting valve seat Mouth is connected by the second connecting tube with flow valve, and outwardly protruding outlet nozzle 212, outlet nozzle are equipped on the side wall for resetting valve seat It is connected by the first connecting tube with the vacuum noz(zle) of jet mixer；Be additionally provided on the side wall for resetting valve seat one it is outwardly protruding Bypass body, be equipped with bypass channel 213 in vivo in bypass, the inlet end of bypass channel close to the bottom wall for resetting valve seat and with reset valve The inner hole of seat communicates, and the outlet side of bypass channel and outlet nozzle are coaxial；Reset spring is put into reset from valve seat upper opening is resetted It in valve seat, and is placed on the bottom wall for resetting valve seat inner hole, the diameter at the top of reset spring is less than the diameter of piston rod；Along reset The top edge of valve seat is equipped with a circle and is greater than the position-arresting groove for resetting valve seat inner hole with the female coaxial and diameter for resetting valve seat 214, along one or more down-set locating slot 215 of the bottom wall of position-arresting groove；Central axis along stop bit seat 23 is greater than equipped with aperture Or the through-hole equal to diameter of piston rod, the stop bit flange to lower process, stop bit are equipped with along the edge of through-hole on stop bit seat bottom wall Flange and position-arresting groove use screw thread or bayonet connection；The piston mainly includes piston head and piston rod, in piston rod outer wall The outwardly protruding positioning key 25 to match with locating slot is set, is equipped with the left and right perforation vertical with its axis on the piston rod The central axes distance of stomata 26, positioning key lower edge and stomata 26 is greater than or equal to 215 bottom wall of locating slot to bypass channel outlet The distance of the central axes at end, when being pressed downward piston, positioning key is moved to stop bit at the bottom wall of locating slot along locating slot, at this moment, Stomata and bypass channel outlet side and outlet nozzle are on same central axes；The top of piston rod is passed through from stop bit flange one end The centre bore of stop bit seat makes positioning key be located at the lower section of stop bit flange, then piston head is screwed in piston rod top end or directly will Piston head is welded on piston rod top end, make 23 sets of stop bit seat on the piston rod above positioning key；The end of piston rod is downward Insertion resets valve seat, and stop bit flange is made to be inserted into position-arresting groove, and entering positioning key 25 in locating slot 215 prevents piston rod generation from turning Dynamic, the end of piston rod resists reset spring；Stop bit flange is connect by screw thread or bayonet with position-arresting groove, and stop bit seat is fixed on It resets on valve seat top, piston is fixed on and is resetted on valve seat, make piston can only be under the effect of external force along in reset valve seat Axis moves up and down, also, the upper limit moved up is the stop bit flange that positioning key arrives to stop bit seat, and the lower limit moved down is Positioning key arrives to the bottom wall of locating slot；When there is water flowing in jet mixer, negative pressure is generated in vacuum noz(zle), is pressed down on and is lived Plug, makes piston head resist stop bit seat, and piston-rod end compresses downwards reset spring, shrinks reset spring, stomata 26 and reset The outlet nozzle 212 of valve seat is connected with the outlet side of bypass channel 213, and reset valve is in the open state, and at this moment, work is sucked in negative pressure Plug, piston persistently compresses reset spring, and overcoming the elastic force of reset spring, so that it will not reset upwards；When water flow stops flowing, suction Negative pressure in gas nozzle disappears, and reset spring resets upwards jacks up piston, and the position of stomata 26 is made to be higher than the outlet for resetting valve seat The outlet side of mouth 212 and bypass channel 213 resets valve and is in close state.

Piston rod outer wall in stomata upper and lower part, which is respectively equipped with, forms the upper close of tight fit with the inner wall for resetting valve seat Seal and middle sealing ring；It is close in the case where piston rod is equipped with the inner wall formation tight fit with reset valve seat close to the end of reset spring Seal.

When not pressing lower piston, stomata, upper seal and the middle sealing ring of the piston rod are all located at reset valve seat Outlet nozzle 212 and bypass channel 213 outlet side above, at this moment, lower seal be located at reset valve seat suction nozzle 211 and side Below the inlet end of paths 213；When pressing lower piston, the upper seal of the piston rod is located at the outlet nozzle for resetting valve seat 212 and bypass channel 213 outlet side above, at this moment, middle sealing ring and lower seal are located at 212 He of outlet nozzle for resetting valve seat Below the outlet side of bypass channel, stomata 26 is connected with the outlet side of the outlet nozzle and bypass channel that reset valve seat.

Beneficial effect

1, after washing machine starts water inlet, reset valve is pressed, negative pressure will be generated at the narrow position of jet mixer, benefit Reset valve is sucked with negative pressure, is kept open it, negative pressure is transmitted to flow valve by resetting valve, opens flow valve, makes to wash The channel for washing agent arrival jet mixer is opened, and under the action of negative pressure, detergent continuously flows into jet mixer Interior to be mixed into the suitable liquid detergent of concentration with water, after water flow stops, resetting valve, reset is returned to upwards under the action of reset spring Closed state when intaking again, if not pressing reset valve, cannot also open flow valve sucking detergent, to realize Only valve addition detergent is resetted by pressing in the stage for needing to add detergent；

2, the amount for adding detergent can be adjusted by adjusting position of the ring on valve body.

Detailed description of the invention

Fig. 1 is agent structure schematic diagram of the invention；

Fig. 2 is the diagrammatic cross-section that reset valve of the invention is in close state；

Fig. 3 is the partial enlarged view of Fig. 2；

Fig. 4 is reset valve of the invention diagrammatic cross-section in the open state；

Fig. 5 is the partial enlarged view of Fig. 4；

Fig. 6 is the figure that pops of reset valve of the invention；

Fig. 7 is the figure that pops of flow valve of the invention；

Fig. 8 is the diagrammatic cross-section of valve body of the invention.

Specific embodiment

As shown in Figure 1, a kind of reset valve on volume control device, mainly by reset valve seat 21, piston 22, stop bit Seat 23, reset spring 24 form；The volume control device is mainly made of jet mixer 1, reset valve 2 and flow valve 3； Jet mixer 1 uses Venturi tube, and input end is connected with water inlet pipe, and outlet end is connected with washing tub；It is narrow in jet mixer Narrow portion position is equipped with the outwardly projecting imbibition nozzle 11 and vacuum noz(zle) 12 being connected to jet mixer inside；Valve is resetted to connect by first Adapter tube is connected with the vacuum noz(zle) of jet mixer, resets valve and is connected by the second connecting tube with flow valve, the liquid outlet of flow valve It is connected by imbibition nozzle with jet mixer, flow valve is connected by third connecting tube with detergent container.

Resetting valve has two kinds of working conditions of opening and closing to press reset valve when there is water flowing in jet mixer, multiple In the open state, the negative pressure that water flowing generates in jet mixer is kept open reset valve to position valve, and negative pressure passes through Vacuum noz(zle), reset valve are transmitted to flow valve, open flow valve, and detergent is entered mixed with water in jet mixer by flow valve It closes；When the water in jet mixer stops flowing, the negative pressure in vacuum noz(zle) disappears, and resets valve reset and is in close state, multiple The original state of position valve is in off state.

As shown in fig. 6, the reset valve 2 is mainly by reset valve seat 21, piston 22, stop bit seat 23,24 groups of reset spring At.

Described resets the hollow cylindrical that valve seat 21 is upper opening, is equipped on the bottom wall for resetting valve seat outwardly protruding Suction nozzle 211, suction nozzle are connected by the second connecting tube with flow valve, are gone out on the side wall for resetting valve seat equipped with outwardly protruding Gas nozzle 212, outlet nozzle are connected by the first connecting tube with the vacuum noz(zle) of jet mixer.

It is additionally provided with an outwardly protruding bypass body on the side wall for resetting valve seat, is equipped with bypass channel in vivo in bypass 213, the inlet end of bypass channel is communicated close to the bottom wall for resetting valve seat and with the inner hole for resetting valve seat, the outlet side of bypass channel It is coaxial with outlet nozzle.Reset spring is put into reset valve seat from valve seat upper opening is resetted, and is placed in and is resetted valve seat inner hole On bottom wall, the diameter at the top of reset spring is less than the diameter of piston rod.

It is equipped with one along the top edge for resetting valve seat and encloses to be greater than with the female coaxial and diameter for resetting valve seat and reset valve seat The position-arresting groove 214 of inner hole, along one or more down-set locating slot 215 of the bottom wall of position-arresting groove；Along the central axis of stop bit seat 23 It is greater than or equal to the through-hole of diameter of piston rod equipped with aperture, is equipped with stopping to lower process along the edge of through-hole on stop bit seat bottom wall Position flange, stop bit flange and position-arresting groove use screw thread or bayonet connection, so that stop bit seat is located in and reset at the top of valve seat.

The piston mainly includes piston head and piston rod, is arranged in piston rod outer wall outwardly protruding with locating slot phase Matched positioning key 25, after piston rod is inserted into reset valve seat, positioning key is located in locating slot, can be as piston is in external force Under the action of moved up and down along locating slot, when positioning key is moved to the bottom of locating slot, play the role of stop bit to piston, Prevent piston from moving still further below.

Be equipped with the stomata 26 of vertical with its axis left and right perforation on the piston rod, positioning key lower edge in stomata 26 Axial line distance be greater than or equal to 215 bottom wall of locating slot to bypass channel outlet side central axes distance, when being pressed downward piston, Positioning key is moved to stop bit at the bottom wall of locating slot along locating slot, and at this moment, stomata is in bypass channel outlet side and outlet nozzle On same central axes, i.e. reset valve is in the conductive state.

When assembling, piston head and piston rod are separated, the top of piston rod is passed through into stop bit seat from stop bit flange one end Centre bore makes positioning key be located at the lower section of stop bit flange, then piston head is screwed in piston rod top end or directly welds piston head Extremely in piston rod top end, make 23 sets of stop bit seat on the piston rod above positioning key；The end of piston rod is downwardly into reset Valve seat makes stop bit flange be inserted into position-arresting groove, and entering positioning key 25 in locating slot 215 prevents piston rod from generating rotation, piston rod End resist reset spring；Stop bit flange is connect by screw thread or bayonet with position-arresting groove, and stop bit seat is made to be fixed on reset valve seat On top, by piston be fixed on reset valve seat on, make piston can only under the effect of external force along reset valve seat central axes above and below It is mobile, also, the upper limit moved up is the stop bit flange that positioning key arrives to stop bit seat, the lower limit moved down supports for positioning key To the bottom wall of locating slot.

When there is water flowing in jet mixer, negative pressure is generated in vacuum noz(zle), is pressed down on piston, is resisted piston head only Position seat, piston-rod end compresses downwards reset spring, shrinks reset spring, stomata 26 and reset valve seat outlet nozzle 212 and The outlet side of bypass channel 213 is connected, and reset valve is in the open state, and at this moment, piston is sucked in negative pressure, and piston persistently compresses multiple Position spring, overcoming the elastic force of reset spring, so that it will not reset upwards；When water flow stops flowing, the negative pressure in vacuum noz(zle) disappears, Reset spring resets upwards jacks up piston, and the position of stomata 26 is made to be higher than the outlet nozzle 212 and bypass channel 213 for resetting valve seat Outlet side, reset valve be in close state.

As shown in Figures 2 and 3, when not pressing lower piston, stomata, upper seal and the middle sealing ring of the piston rod It is all located above the outlet side of the outlet nozzle 212 and bypass channel 213 that reset valve seat, at this moment, lower seal, which is located at, resets valve seat Suction nozzle 211 and bypass channel 213 inlet end below.

As shown in Figure 4 and Figure 5, when pressing lower piston, the upper seal of the piston rod is located at the outlet for resetting valve seat Above the outlet side of mouth 212 and bypass channel 213, at this moment, middle sealing ring and lower seal are located at the outlet nozzle 212 for resetting valve seat Below the outlet side of bypass channel, stomata 26 is connected with the outlet side of the outlet nozzle and bypass channel that reset valve seat.

As shown in Figure 7 and Figure 8, the flow valve 3 is mainly by valve body 31, adjusting ring 32, air pressure packet 33, adjustment spring 34, needle-valve 35 and sealing ring 36 form.

The valve body 31 is band there are three the hollow T-type structure of port, and port directed downwardly is to pass through third connecting tube The liquid inlet port 311 being connected to detergent container, the port of side are the liquid outlet being connected to the imbibition nozzle 11 of jet mixer 312；Port upward is the adjustment seat 313 being connected through a screw thread with the one end for adjusting ring.

It adjusts after ring is connected with adjustment seat and forms a hollow adjusting space；The other end center for adjusting ring is equipped with air-flow Balance hole；The air pressure packet is hollow closing column construction, and being equipped on the cylindricality wall surface of air pressure packet can be in external force The lower flexible fold of effect；Air pressure packet is placed in by its axis mode coaxial with the axis of adjusting ring and is adjusted in space, air pressure There are gaps between the cylindricality wall surface of packet and the inner wall for adjusting space；Coaxial adjustment spring is mounted in air pressure packet；? Air pressure packet is equipped with upward air spout towards the end face for adjusting ring, and the air spout passes through the air pressure balance adjusted on ring Hole, then be connected by the second connecting tube with the suction nozzle 211 for resetting valve 2.

There are gap between the air equalizer opening on air spout and adjusting ring, makes to adjust space and extraneous air pressure keeps putting down Weighing apparatus；The fixing seat raised to valve body direction is equipped on end face of the air pressure packet towards valve body；The needle-valve by one section of cylindrical body and An end face with cylindrical body is that the cone at cone bottom forms, and the cylindrical portion of needle-valve is inserted into fixing seat, then passes through pivot pin 37 Fixing seat and needle-valve are locked together；The flange to inner process is equipped in valve body inner bore between liquid outlet and adjustment seat 314, the seal groove 315 being recessed outward is equipped on the hollow wall face of flange, sealing ring 7 is placed in seal groove, flange 314 Inner hole and needle-valve cylindrical body outer wall formed yin-yang cooperation；Valve interior wall between liquid outlet and liquid inlet port is equipped with inwardly prominent The needle seating 316 risen, direction of the tip of needle-valve from adjustment seat to liquid outlet are then passed through needle seating 316, needle after passing through sealing ring The cylindrical portion of valve is completely plugged by the inner hole of flange, and by the inner reversible cycle of needle seating, needle-valve exists the conical sections of needle-valve It can be moved along the central axes of flange and needle seating under the action of external force.

Around the air equalizer opening adjusted on ring, adjust ring inner wall be equipped with aperture be greater than air equalizer opening to air pressure packet The air pressure adjustment seat of direction protrusion is equipped with lug, nib towards the end face of air pressure packet in air pressure adjustment seat, allows the flow to pass through lug, nib Gap flowing, prevent air-flow from not can enter air pressure packet side wall towards the end face blocking for adjusting ring by air pressure packet and adjusting space Gap between inner wall.

The spring retainer flange raised to opposite, the both ends of adjustment spring are equipped on two opposite faces of air pressure packet It is stuck in spring retainer flange.

Block water plate, water blocking are set in jet mixer between the narrow positions and outlet end of the jet mixer There are water hole between piece and the inner wall of jet mixer, the block water plate is taper, and the vertex of a cone is towards the narrow of jet mixer Narrow portion position is equipped with protrusion in the outer wall of block water plate towards water inlet end, detergent is made to mix with water more uniformly.

The adjusting ring inner wall is equipped with internal screw thread, and the adjustment seat outer wall is equipped with and adjusts the internal screw thread phase on ring The external screw thread matched, by adjusting position of the ring in adjustment seat, it will be able to change the pore space size and tune of air pressure packet The prestressing force of spring is saved, thus change strength when inhaling dynamic needle-valve, change needle-valve and limit the pore size between flange, thus Change the amount of the detergent of sucking.

In use, starting washing machine, when washing machine starts water inlet, water flows in jet mixer makes vacuum noz(zle) and suction Generate negative pressure in liquid mouth, press lower piston, piston compresses reset spring, make stomata on piston rod and reset valve seat outlet nozzle and The outlet side of bypass channel, the first connecting tube and vacuum noz(zle) are connected, and space locating for reset spring is made to be in negative pressure state, from And be sucked piston continue to compress reset spring keep stomata be connected to vacuum noz(zle), the negative pressure in vacuum noz(zle) further through second company Adapter tube passes to flow valve, and negative pressure is transmitted in air pressure packet, shrinks the fold of air pressure packet and overcomes the pressure of adjustment spring by needle Valve lifts, and makes to generate gap between needle-valve and needle seating, and imbibition nozzle, liquid outlet are connected to liquid inlet port, makes to generate negative pressure in liquid inlet port, The detergent in detergent tank being connected to liquid inlet port enters liquid outlet by the gap between liquid inlet port, needle-valve and needle seating, Jet mixer is entered together with water to the Outlet-side flow of jet mixer by imbibition nozzle again, impinges upon and is formed on block water plate The more uniform liquid detergent of concentration；It intakes and completes when this, there is no water in flowing in jet mixer, vacuum noz(zle) and imbibition nozzle In negative pressure all disappear, reset spring reset, piston is jacked up upwards, the stomata on piston rod and reset valve seat outlet nozzle and The outlet side of bypass channel disconnects, correspondingly, adjustment spring also resets, needle-valve is pressed downward it is made to block needle seating, detergent Stop entering in jet mixer；When washing machine is intake again, although still producing air pressure in vacuum noz(zle) and imbibition nozzle, But since piston has resetted, stomata and the outlet nozzle of valve seat is resetted and the outlet side of bypass channel is disconnected, from being unable to Negative pressure is passed into flow valve, to cannot also add detergent.

Actual in use, the amount for the clothes that user can wash as needed selects inflow, further according to inflow tune The prestressing force of adjustment spring is saved, so that detergent is inhaled into jet stream mixed so that it is determined that needing great strength that could inhale needle-valve It is mixed in clutch with water, is then reinjected in washing drum.In the fill phase for needing to add detergent, resetted once opening Valve, detergent will be continued into jet mixer and be mixed with water, until water inlet stops, therefore, it will be able in fill phase The mixing for constantly realizing detergent and water makes detergent to be added needed for once doing washing, constantly adds in fill phase And entered back into washing tub after being mixed with water, the mode of addition is scientific and reasonable, it helps clothing is washed cleaner.

When due to washing machine work, in addition to adding detergent, it is also possible to need to add other additives such as softener, only need More set reset valves and flow valve are configured on jet mixer can be realized as adding.

Above-described embodiment is intended merely to interpretation purposes of the invention, and is not limitation of the present invention, this technology The those of ordinary skill in field makes a variety of changes or substitutes within the essential scope of the present invention, also should belong to guarantor of the invention Protect scope.

Claims

1. a kind of reset valve on volume control device, mainly by reset valve seat (21), piston (22), stop bit seat (23), Reset spring (24) composition；The volume control device is mainly by jet mixer (1), reset valve (2) and flow valve (3) group At；Jet mixer (1) uses Venturi tube, and input end is connected with water inlet pipe, and outlet end is connected with washing tub；In jet mixing Device narrow positions is equipped with the outwardly projecting imbibition nozzle (11) and vacuum noz(zle) (12) being connected to jet mixer inside；Its feature exists In the hollow cylindrical that: the reset valve seat (21) is upper opening, be equipped on the bottom wall for resetting valve seat it is outwardly protruding into Gas nozzle (211), suction nozzle are connected by the second connecting tube with flow valve, are gone out on the side wall for resetting valve seat equipped with outwardly protruding Gas nozzle (212), outlet nozzle are connected by the first connecting tube with the vacuum noz(zle) of jet mixer；It is also set on the side wall for resetting valve seat There is an outwardly protruding bypass body, is equipped with bypass channel (213) in vivo in bypass, the inlet end of bypass channel is close to reset valve The bottom wall of seat is simultaneously communicated with the inner hole for resetting valve seat, and the outlet side of bypass channel and outlet nozzle are coaxial；Reset spring from reset valve Seat upper opening, which is put into, to be resetted in valve seat, and is placed on the bottom wall for resetting valve seat inner hole, and the diameter at the top of reset spring is less than The diameter of piston rod；It is equipped with one along the top edge for resetting valve seat and encloses to be greater than with the female coaxial and diameter for resetting valve seat and reset The position-arresting groove (214) of valve seat inner hole, along one or more down-set locating slot (215) of the bottom wall of position-arresting groove；Along stop bit seat 23 Central axis be equipped with the through-hole that aperture is greater than or equal to diameter of piston rod, be equipped on stop bit seat bottom wall along the edge of through-hole downward The stop bit flange of protrusion, stop bit flange and position-arresting groove use screw thread or bayonet connection；The piston mainly include piston head and The outwardly protruding positioning key (25) to match with locating slot is arranged in piston rod outer wall in piston rod, on the piston rod be equipped with The stomata (26) of the vertical left and right perforation of its axis, positioning key lower edge and the central axes of stomata (26) are fixed apart from being greater than or equal to Position slot (215) bottom wall to bypass channel outlet side central axes distance, when being pressed downward piston, positioning key is moved along locating slot The stop bit at the bottom wall of locating slot, at this moment, stomata and bypass channel outlet side and outlet nozzle are on same central axes；By piston The top of bar passes through the centre bore of stop bit seat from stop bit flange one end, and positioning key is made to be located at the lower section of stop bit flange, then by piston Head is screwed in piston rod top end or piston head is directly welded on piston rod top end, covers stop bit seat (23) above positioning key On piston rod；The end of piston rod is downwardly into reset valve seat, stop bit flange is made to be inserted into position-arresting groove, enters positioning key (25) Prevent piston rod from generating rotation in locating slot (215), the end of piston rod resists reset spring；Stop bit flange passes through screw thread or card Mouthful connect with position-arresting groove, be fixed on stop bit seat on reset valve seat top, piston is fixed on reset valve seat, makes piston can only be The upper limit for moving up and down along the central axes for resetting valve seat under the action of external force, also, moving up is that positioning key arrives to stop bit The stop bit flange of seat, the lower limit moved down are the bottom wall that positioning key arrives to locating slot；When there is water flowing in jet mixer, Negative pressure is generated in vacuum noz(zle), presses down on piston, piston head is made to resist stop bit seat, piston-rod end compresses downwards reset spring, Reset spring is shunk, stomata (26) is connected with the outlet side of the outlet nozzle (212) and bypass channel (213) that reset valve seat, Reset valve is in the open state, and at this moment, piston is sucked in negative pressure, and piston persistently compresses reset spring, overcomes the elastic force of reset spring So that it will not reset upwards；When water flow stops flowing, the negative pressure in vacuum noz(zle) disappears, and reset spring is resetted upwards by piston top It rises, so that the position of stomata (26) is higher than the outlet side of the outlet nozzle (212) and bypass channel (213) that reset valve seat, reset at valve In closed state.

2. the reset valve according to claim 1 on volume control device, it is characterised in that: on stomata top under The piston rod outer wall in portion is respectively equipped with the upper seal that tight fit is formed with the inner wall for resetting valve seat and middle sealing ring；In piston rod The lower seal that tight fit is formed with the inner wall for resetting valve seat is equipped with close to the end of reset spring.

3. the reset valve according to claim 2 on volume control device, it is characterised in that: when not by lower piston When, stomata, upper seal and the middle sealing ring of the piston rod are all located at the outlet nozzle (212) and bypass channel for resetting valve seat (213) above outlet side, at this moment, lower seal is located at the air inlet for resetting the suction nozzle (211) and bypass channel (213) of valve seat End lower section；When pressing lower piston, the upper seal of the piston rod is located at the outlet nozzle (212) and bypass channel that reset valve seat (213) above outlet side, at this moment, middle sealing ring and lower seal are located at the outlet nozzle (212) and bypass channel for resetting valve seat Outlet side below, stomata (26) is connected with the outlet nozzle of reset valve seat and the outlet side of bypass channel.