CN104006194A - Reducing valve - Google Patents
Reducing valve Download PDFInfo
- Publication number
- CN104006194A CN104006194A CN201410251158.6A CN201410251158A CN104006194A CN 104006194 A CN104006194 A CN 104006194A CN 201410251158 A CN201410251158 A CN 201410251158A CN 104006194 A CN104006194 A CN 104006194A
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- China
- Prior art keywords
- valve
- pin bushing
- guide pin
- valve rod
- runner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000009467 reduction Effects 0.000 claims description 53
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 9
- 238000004804 winding Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- 239000000284 extract Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
- B01D35/046—Plug, tap, or cock filters filtering elements mounted in or on a faucet the filtering element being mounted in the faucet plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/16—Valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a reducing valve. The reducing valve comprises a valve body (1), a valve rod, a valve cover (11), a device driven by mediums and a filter screen (15); a flow inlet channel (3.1) and a flow outlet channel (3.2) which are for mediums to flow are formed inside the valve body (1); a reset device which is connected with a device driven by the mediums is arranged inside the valve cover (11); a baffle block (9) which prevents the mediums flowing through the lower portion of the flow inlet channel (3.1 ) to the flow outlet channel (3.2) is arranged inside the flow inlet channel (3.1); a guiding sleeve (6) which is for the valve rod to slide is arranged inside the valve body (1); the filter screen (15) warps the outer periphery of the guiding sleeve (6); the bottom of the valve rod is provided with a valve clack (2) which is matched with the lower end surface of the guiding sleeve (6) to adjust the flow of the mediums; a flow channel (6.1) which is for the mediums to flow vertically is formed along the axial direction of the guiding sleeve (6). The reducing valve has the advantages of enabling the valve body to be simple in manufacturing and the filter screen to be convenient to clean.
Description
Technical field
The present invention relates to a kind of reduction valve.
Background technique
Reduction valve is by regulating, outlet pressure is reduced to the outlet pressure of a certain needs, and rely on the energy of medium itself, making outlet pressure automatically maintain stable a kind of valve.From hydromechanical angle analysis, reduction valve is a throttle element that local resistance can change, and by changing orifice size, flow velocity and fluid dynamic energy is changed, thereby causes the different pressure losses, with this, reaches the object of decompression.Finally, rely on the adjusting of controlling with regulating system, make fluctuation and the spring force balance of downstream pressure, make downstream pressure keep constant in certain margin of error.
The reduction valve of prior art, comprise valve body, valve rod, valve gap, filter screen, in valve body, be provided with and supply the influent stream road of media flow and go out runner, the lower end of described valve rod is provided with flap, valve rod upper end is provided with diaphragm, described diaphragm and valve rod, valve body can form an airtight chamber, lower surface in described influent stream road and go out upper surface in runner and be provided with and coordinate the block with control media flow with flap, described filter screen is wrapped on the outer peripheral surface of valve rod, the diameter of described flap is greater than the aperture that block forms, described valve body lower portion is provided with the pilot hole for valve rod location, the described upper surface going out in runner is disposed radially the runner of transmission of pressure, medium can be indoor by this runner inflow chamber, described valve body lower portion is provided with the bonnet for flap location, valve body lower portion offers the positioning hole for bonnet location.
But there is following shortcoming in the reduction valve of said structure:
1,, in the valve body forming process of reduction valve, if the runner that goes out of valve body is designed to runner radially, this can make the forming process of valve body too loaded down with trivial details, has strengthened the difficulty of processing of valve body; Valve body lower portion need to be provided for the bonnet of flap location, and needing to offer tapped hole by valve body lower portion in the cooperation of valve body, could realize bonnet, so, valve body lower portion also needs to offer one for the positioning hole of bonnet is installed, and such structure also can propose more operation to valve body forming process.In sum, current reduction valve exists valve body to produce loaded down with trivial details shortcoming.
2, in the medium that reduction valve flows through, can contain certain impurity, so need to carry out regular cleaning to the filter screen on valve rod.In the structure of above-mentioned reduction valve, in order to clean filter screen, need first bonnet to be outwarded winding from valve body; Because the diameter of flap is greater than the aperture of block arc formation, so need first flap is outwarded winding from valve rod, valve rod could be extracted in valve body like this, and drives the filter screen being fixed on valve rod outer peripheral surface to extract in valve body.On the one hand, in the process of the above-mentioned flap of outwarding winding, can cause impurity to come off from the positioning hole of valve body lower portion, and can cause the medium in valve body to leak from positioning hole; On the other hand, for cleaning and filtering net, the bonnet of need to first outwarding winding, the flap of outwarding winding, can extract filter screen just then extract valve rod, this wherein each structure can relate to seal ring, so quite loaded down with trivial details in the operation of extracting filter screen.In sum, current reduction valve operates too loaded down with trivial details in the process of cleaning and filtering net.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes existing technological deficiency, provides that a kind of valve body manufacture is simple, filter gauze cleaning reduction valve easily.
Technical solution of the present invention is, provide a kind of reduction valve with following structure: comprise valve body, valve rod, valve gap, by the device of media drive, filter screen, in valve body, be provided with and supply the influent stream road of media flow and go out runner, in described valve gap, be provided with and the resetting means being connected by the device of media drive, in described influent stream road, be provided with and prevent that MEDIA FLOW from flowing to out the block of runner through bottom, influent stream road, in described valve body, be provided with the guide pin bushing for valve stem slides, described filter screen is wrapped on guide pin bushing excircle, the bottom of described valve rod is provided with the flap that coordinates to regulate rate-of flow size with guide pin bushing lower end surface, described guide pin bushing is provided with the runner for current downflow on medium along axial direction, in described guide pin bushing, be provided with the cavity for media flow, the described device by media drive is arranged on valve stem tip, the described chamber that can be sealed with the formation of guide pin bushing inwall by the device of media drive, described guide pin bushing outer circle wall is provided with the water inlet that is communicated with influent stream road and cavity, described runner one end is communicated with cavity lower end surface, the described runner the other end is communicated with chamber, described cavity lower end with go out runner and be communicated with.
As a kind of preferred, the angle theta of described guide pin bushing axis and influent stream road axis is 40 °～90 °.
As a kind of preferred, described block inner peripheral surface and the same axis of guide pin bushing.
As a kind of preferred, described resetting means comprises stage clip, end cap, between described stage clip and end cap, is provided with hexagonal socket nut, and described end cap is arranged on valve gap top, and the lower end surface of described hexagonal socket nut is provided with for locating the step surface of stage clip.
As a kind of preferred, described guide pin bushing comprises top, middle part, bottom, described upper and lower connects by guide pillar, described guide pillar is along the circumferential direction evenly distributed in cavity, described runner is arranged in guide pillar along guide pin bushing axial direction, the outer wall of described guide pillar is provided with for the projection of filter screen is installed, and described top is provided with the first bulge loop with valve inner location, and described bottom is provided with the second bulge loop with valve inner location.
As a kind of preferred, described guide pillar number is 4, and described runner number is 2, and described runner is distributed in a pair of guide pillar.
As a kind of preferred, the described device by media drive is piston, described valve rod is the first valve rod, described piston is arranged on the first valve rod upper end, described the first valve rod middle part is positioned at the cavity of guide pin bushing, described piston comprises the 3rd bulge loop that the top inner peripheral surface with guide pin bushing is slidably matched and the 4th bulge loop being slidably matched with the middle part inner peripheral surface of guide pin bushing, and the upper-end surface of described piston is provided with the 5th bulge loop for resetting means location.
As a kind of preferred, the described device by media drive is diaphragm, described valve rod is the second valve rod, it axially screws described the second valve rod upper end edge with nut through diaphragm middle part, described the second valve rod middle part is positioned at the cavity of guide pin bushing, on described the second valve rod, be provided with the guide pad that the middle part inner peripheral surface with guide pin bushing is slidably matched, described the second valve rod upper end is provided with the annular boss that pushes against diaphragm lower surface, and described diaphragm edge place is fixed between valve gap lower end surface and guide pin bushing upper-end surface.
As a kind of preferred, described block and valve body are one-body molded, and the lower surface of described valve body is the integral body of sealing.
As a kind of preferred, described guide pin bushing is to be made by nonmetallic material.
Compared with prior art, the present invention has following characteristics:
1, the present invention is arranged on the runner of Transfer Medium pressure on the guide pin bushing that can design separately, first the upper end of valve rod will be installed to by the device of media drive, then valve rod lower end edge guide pin bushing is axially through guide pin bushing, flap is screwed in valve rod lower end, finally guide pin bushing is linked in valve body vertically, and screws valve gap.When medium flows to chamber from influent stream road, the runner that medium can be flowed through in guide pin bushing transfers the pressure in chamber, the medium of pressure rise makes to be moved upward by the device band ovable valve stem of media drive, thereby realize the pressure transmission of medium, with this motion of flap with ovable valve stem lower end, regulate the openings of sizes of flap and guide pin bushing lower end surface to play the effect that regulates rate-of flow size; In addition, flap relies on guide pin bushing inner peripheral surface to slide and move up and down vertically, below flap without design fixing device, so the bottom of valve body is the integral body of a sealing, that is to say, in the bottom of valve body without offering for the fixing bonnet of flap, without offering in the bottom of valve body for the positioning hole of bonnet is installed, in a word, only need offer the hole of an accommodating guide pin bushing on valve body, this has simplified the design of valve body structure greatly.Filter screen of the present invention is wrapped on the outer peripheral surface of guide pin bushing, when needs clean filter screen, and the valve gap of only need outwarding winding, extract guide pin bushing, just filter screen can be extracted from valve body upper end, so just can not caused impurity unrestrained from valve body lower end, and the operation of dismounting filter screen is very convenient.In sum, it is simple that reduction valve of the present invention has valve body manufacture, and filter gauze cleaning is advantage easily.
2, the angle theta of guide pin bushing axis of the present invention and influent stream road axis is 40 °～90 °, the medium that influent stream road flows to can not vertically act on the cross section of guide pin bushing and valve rod to the impact of guide pin bushing and valve rod, the active force acting on guide pin bushing and valve rod cross section is a component of medium impact force, the active force vertically acting on guide pin bushing and valve rod cross section is reduced, that is to say, the flow resistance of this invention medium is less.
3, under end cap of the present invention, between edge and stage clip upper end, be provided with for compressing the hexagonal socket nut of stage clip, described hexagonal socket nut refers to that the home position hollow out of nut becomes hexagonal structure, the outside thread of described hexagonal socket nut and the internal thread of valve gap screw, can be by hexagonal instrument rotation hexagonal socket nut, height hexagonal socket nut being screwed with this regulates, and makes the adjusting of hexagonal socket nut more convenient.
Accompanying drawing explanation
Fig. 1 is the sectional view of reduction valve of the present invention.
Fig. 2 is reduction valve the second embodiment's of the present invention sectional view.
Fig. 3 is the plan view of reduction valve guide pin bushing of the present invention.
Fig. 4 is the schematic diagram of reduction valve guide pin bushing of the present invention.
Fig. 5 is the sectional view of reduction valve guide pin bushing of the present invention.
Fig. 6 is the sectional view of reduction valve piston of the present invention.
Fig. 7 is the sectional view of relief valve body of the present invention.
Fig. 8 is the sectional view of reduction valve filter screen of the present invention.
Fig. 9 is the sectional view of reduction valve influent stream of the present invention road axis when vertical with valve rod axis.
Figure 10 is the reduction valve sectional view of guide pin bushing when axis rotates 45 ° in Fig. 1 of the present invention.
Shown in figure: 1, valve body, 2, flap, 3.1, influent stream road, 3.2, go out runner, 4.1, the first valve rod, 4.2, the second valve rod, 5, diaphragm, 6, guide pin bushing, 6.1, runner, 6.2, top, 6.3, middle part, 6.4, bottom, 6.5, cavity, 6.6, guide pillar, 6.7, projection, 6.8, the first bulge loop, 6.9, the second bulge loop, 7, chamber, 8, piston, 8.1, the 3rd bulge loop, 8.2, the 4th bulge loop, 8.3, the 5th bulge loop, 9, block, 10, seal ring, 11, valve gap, 12, end cap, 13, hexagonal socket nut, 14, stage clip, 15, filter screen, 16, guide pad, 17, nut, 18, annular boss, 19, pad, θ, the angle of guide pin bushing 6 axis and influent stream road 3.1 axis.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Working principle of the present invention is: the medium of the present invention influent stream road 3.1 of flowing through successively, cavity 6.5, go out runner 3.2, part medium can flow to chamber 7 along runner 6.1, the axial direction of described guide pin bushing 6 is provided with the runner 6.1 for current downflow on medium, this runner 6.1 runs through two end faces up and down of guide pin bushing 6, and the lower end surface of guide pin bushing 6 is near the upper surface of flap 2, so, when the pressure medium in influent stream road 3.1 rises, medium can flow through from the gap between guide pin bushing 6 lower end surfaces and flap 2 upper surfaces, be that medium can pass through in the runner 6.1 arrival chambers 7 of guide pin bushing 6 lower end surfaces immediately, the chamber 7 of pressure rise can touch and make to be moved upward by the device band ovable valve stem of media drive, the flap 2 that is fixed on valve rod lower end is reduced with the gap of guide pin bushing 6 lower end surfaces, thereby the pressure medium of realizing the runner 3.2 of flowing through out reduces.In the process rising at valve rod, the effect because pressure medium rises, can reach a kind of new state of equilibrium between the stage clip 14 of resetting means and valve rod.Described flap 2 is comprised of the nut of a seal ring and press seal circle.
Embodiment one:
As Fig. 1, 3, 4, 5, 6, 7, 8, 9, shown in 10, reduction valve of the present invention comprises: valve body 1, valve rod, valve gap 11, by the device of media drive, filter screen 15, in valve body 1, be provided with and supply the influent stream road 3.1 of media flow and go out runner 3.2, in described valve gap 11, be provided with and the resetting means being connected by the device of media drive, in described influent stream road 3.1, be provided with and prevent that MEDIA FLOW from flowing to out the block 9 of runner 3.2 through 3.1 bottoms, influent stream road, in described valve body 1, be provided with the guide pin bushing 6 for valve stem slides, described filter screen 15 is wrapped on guide pin bushing 6 excircles, the bottom of described valve rod is provided with the flap 2 that coordinates to regulate rate-of flow size with guide pin bushing 6 lower end surfaces, described guide pin bushing 6 is provided with the runner 6.1 for current downflow on medium along axial direction, in described guide pin bushing 6, be provided with the cavity 6.5 for media flow, the described device by media drive is arranged on valve stem tip, the described chamber 7 that can be sealed with guide pin bushing 6 inwalls formation by the device of media drive, described guide pin bushing 6 outer circle walls are provided with the water inlet that is communicated with influent stream road 3.1 and cavity 6.5, described runner 6.1 one end are communicated with cavity 6.5 lower end surfaces, described runner 6.1 the other ends are communicated with chamber 7, described cavity 6.5 lower ends with go out runner 3.2 and be communicated with.
The angle theta of described guide pin bushing 6 axis and influent stream road 3.1 axis is 40 °～90 °.
Described block 9 inner peripheral surfaces and the same axis of guide pin bushing 6.
Described resetting means comprises stage clip 14, end cap 12, between described stage clip 14 and end cap 12, is provided with hexagonal socket nut 13, and described end cap 12 is arranged on valve gap 11 tops, and the lower end surface of described hexagonal socket nut 13 is provided with for locating the step surface of stage clip 14.
Described guide pin bushing 6 comprises top 6.2, middle part 6.3, bottom 6.4,6.2He bottom 6.4, described top connects by guide pillar 6.6, described guide pillar 6.6 is along the circumferential direction evenly distributed in cavity 6.5, described runner 6.1 is arranged in guide pillar 6.6 along guide pin bushing 6 axial directions, the outer wall of described guide pillar 6.6 is provided with for the projection 6.7 of filter screen 15 is installed, described top 6.2 is provided with the first bulge loop 6.8 with valve body 1 positioned internal, and described bottom 6.4 is provided with the second bulge loop 6.9 with valve body 1 positioned internal.
Described guide pillar 6.6 numbers are 4, and described runner 6.1 numbers are 2, and described runner 6.1 is distributed in a pair of guide pillar 6.6.
The described device by media drive is piston 8, described valve rod is the first valve rod 4.1, described piston 8 is arranged on the first valve rod 4.1 upper ends, described the first valve rod 4.1 middle parts are positioned at the cavity 6.5 of guide pin bushing 6, described piston 8 comprises the 3rd bulge loop 8.1 that top 6.2 inner peripheral surfaces with guide pin bushing 6 are slidably matched and the 4th bulge loop 8.2 being slidably matched with middle part 6.3 inner peripheral surfaces of guide pin bushing 6, and the upper-end surface of described piston 8 is provided with the 5th bulge loop 8.3 for resetting means location.
Described block 9 is one-body molded with valve body 1, and the lower surface of described valve body 1 is the integral body of sealing.
Described guide pin bushing 6 is to be made by nonmetallic material.
Fig. 9 is guide pin bushing 6 axis and the reduction valve sectional view of influent stream road 3.1 axis when vertical, and MEDIA FLOW to schematic diagram.
Figure 10 is the reduction valve sectional view of guide pin bushing 6 when axis rotates 45 ° in Fig. 1, and MEDIA FLOW to schematic diagram.
The present invention by the runner of Transfer Medium pressure 6.1 separately design guide pin bushing 6 axially.First, piston 8 is fixed on to the upper end of the first valve rod 4.1, the cavity 6.5 of guide pin bushing 6 is passed in the first valve rod 4.1 lower ends, then flap 2 is screwed to the lower end of the first valve rod 4.1; Secondly, guide pin bushing 6 is linked in valve body 1 vertically; Finally, stage clip 14 is installed, and is screwed valve gap 11, hexagonal socket nut 13 is screwed in valve gap 11, cover end cap 12.Cavity 6.5 when medium is flowed through filter screen 15 arrival guide pin bushings from influent stream road 3.1 in, if pressure medium rises sharply, the runner 6.1 that medium can be flowed through in guide pin bushing 6 arrives chambers 7, the interior pressure medium rising of chamber 7 can promote piston 8 and move upward, thereby drive the first valve rod 4.1 to move upward, the first valve rod 4.1 also just drives the flap 2 of the first valve rod 4.1 lower ends to move upward.Because being fixed in valve body 1, guide pin bushing 6 can not move, so, along with moving upward of the first valve rod 4.1 makes the gap between flap 2 and the lower end surface of guide pin bushing 6, diminish, thereby reduce medium, from the gap between flap 2 and guide pin bushing 6 lower end surfaces, flow out and enter out runner 3.2.Piston 8 can promote stage clip 14 and shrink in uphill process, and when pressure medium reduces, the elastic force of stage clip 14 can promote piston 8 and the first valve rod 4.1 moves downward to realize reset.In order to guarantee the structure seal of valve body 1 inside, the present invention is arranged on all component in the space of valve body 1 and valve gap 11 formation.So, the hexagonal socket nut 13 compressing for stage clip 14 is also arranged on valve gap 11 inside, in order to facilitate the rotation of hexagonal socket nut 13, operator can be rotated hexagonal socket nut 13 with hexagon wrench, and the effect of end cap 12 is to prevent that the impurity such as dust from entering in reduction valve.
Block 9 of the present invention is positioned at the bottom of valve body 1, one-body molded in valve body 1 bottom in this region, is an airtight integral body, thereby guarantees the integrity of valve body 1.The setting of filter screen 15 is in order to prevent that trash flow from resulting in blockage when the gap of guide pin bushing 6 and flap 2, thereby affects the normal work of reduction valve.In the time need to cleaning the filter screen 15 of guide pin bushing 6 outer walls, only the valve of reduction valve entrance point and outlet end (this valve is specifically designed to the opening and closing of reduction valve two ends medium) need to be closed, making the pressure medium in reduction valve is zero, be that medium stops flowing, then the valve gap 11 of outwarding winding, extracts guide pin bushing 6 and can clean filter screen 15.And current reduction valve is after cutting out the valve at reduction valve two ends, because the bottom at valve body 1 can be provided with the positioning hole for flap 2 location, in the process of dismounting valve rod taking-up filter screen, can open positioning hole, so can make medium flow out from positioning hole when cleaning filter screen, so meeting placing container, with recovering medium, avoids medium flow out and cause medium to flash from positioning hole below positioning hole.
Described guide pillar 6.6 numbers can be for a plurality of, and described runner 6.1 can be arranged in every guide pillar 6.6, and described guide pin bushing 6 is made for plastics, can alleviate like this weight of reduction valve integral body.At the first bulge loop 6.8, the second bulge loop 6.9, the 3rd bulge loop 8.1, the 4th bulge loop 8.2, be provided with seal ring 10, to prevent the leakage of medium.
Embodiment two:
As Fig. 2, 3, 4, 5, 6, 7, shown in 8, reduction valve of the present invention comprises: valve body 1, valve rod, valve gap 11, by the device of media drive, filter screen 15, in valve body 1, be provided with and supply the influent stream road 3.1 of media flow and go out runner 3.2, in described valve gap 11, be provided with and the resetting means being connected by the device of media drive, in described influent stream road 3.1, be provided with and prevent that MEDIA FLOW from flowing to out the block 9 of runner 3.2 through 3.1 bottoms, influent stream road, in described valve body 1, be provided with the guide pin bushing 6 for valve stem slides, described filter screen 15 is wrapped on guide pin bushing 6 excircles, the bottom of described valve rod is provided with the flap 2 that coordinates to regulate rate-of flow size with guide pin bushing 6 lower end surfaces, described guide pin bushing 6 is provided with the runner 6.1 for current downflow on medium along axial direction, in described guide pin bushing 6, be provided with the cavity 6.5 for media flow, the described device by media drive is arranged on valve stem tip, the described chamber 7 that can be sealed with guide pin bushing 6 inwalls formation by the device of media drive, described guide pin bushing 6 outer circle walls are provided with the water inlet that is communicated with influent stream road 3.1 and cavity 6.5, described runner 6.1 one end are communicated with cavity 6.5 lower end surfaces, described runner 6.1 the other ends are communicated with chamber 7, described cavity 6.5 lower ends with go out runner 3.2 and be communicated with.
The angle theta of described guide pin bushing 6 axis and influent stream road 3.1 axis is 40 °～90 °
Described block 9 inner peripheral surfaces and the same axis of guide pin bushing 6.
Described resetting means comprises stage clip 14, end cap 12, between described stage clip 14 and end cap 12, is provided with hexagonal socket nut 13, and described end cap 12 is arranged on valve gap 11 tops, and the lower end surface of described hexagonal socket nut 13 is provided with for locating the step surface of stage clip 14.
Described guide pin bushing 6 comprises top 6.2, middle part 6.3, bottom 6.4,6.2He bottom 6.4, described top connects by guide pillar 6.6, described guide pillar 6.6 is along the circumferential direction evenly distributed in cavity 6.5, described runner 6.1 is arranged in guide pillar 6.6 along guide pin bushing 6 axial directions, the outer wall of described guide pillar 6.6 is provided with for the projection 6.7 of filter screen 15 is installed, described top 6.2 is provided with the first bulge loop 6.8 with valve body 1 positioned internal, and described bottom 6.4 is provided with the second bulge loop 6.9 with valve body 1 positioned internal.
Described guide pillar 6.6 numbers are 4, and described runner 6.1 numbers are 2, and described runner 6.1 is distributed in a pair of guide pillar 6.6.
The described device by media drive is diaphragm 5, described valve rod is the second valve rod 4.2, it axially screws described the second valve rod 4.2 upper end edges through diaphragm 5 middle parts and nut 17, described the second valve rod 4.2 middle parts are positioned at the cavity 6.5 of guide pin bushing 6, on described the second valve rod 4.2, be provided with the guide pad 16 that middle part 6.3 inner peripheral surfaces with guide pin bushing 6 are slidably matched, described the second valve rod 4.2 upper ends are provided with the annular boss 18 that pushes against diaphragm 5 lower surfaces, and described diaphragm 5 edges are fixed between valve gap 11 lower end surfaces and guide pin bushing 6 upper-end surfaces.
Described nut 17 upper surfaces are provided with the step surface for stage clip 14 location, between described nut 17 and diaphragm 5, are provided with pad 19.
Described block 9 is one-body molded with valve body 1, and the lower surface of described valve body 1 is the integral body of sealing.
Described guide pin bushing 6 is to be made by nonmetallic material.
The present invention by the runner of Transfer Medium pressure 6.1 separately design guide pin bushing 6 axially.First, the second valve rod 4.2 upper ends are through the middle part of diaphragm 5, and the cavity 6.5 of guide pin bushing 6 is passed in the second valve rod 4.2 lower ends, then flap 2 screwed to the lower end of the second valve rod 4.2; Secondly, guide pin bushing 6 is linked in valve body 1 vertically; Finally, stage clip 14 is installed, and is screwed valve gap 11, hexagonal socket nut 13 is screwed in valve gap 11, cover end cap 12.Cavity 6.5 when medium is flowed through filter screen 15 arrival guide pin bushings from influent stream road 3.1 in, if pressure medium rises sharply, the runner 6.1 that medium can be flowed through in guide pin bushing 6 arrives chambers 7, the interior pressure medium of chamber 7 rises and can promote diaphragm 5 expansions, be thereby that medium drives the second valve rod 4.2 to move upward in the interior accumulation of chamber 7, the second valve rod 4.2 also just drives the flap 2 of the second valve rod 4.2 lower ends to move upward.Because being fixed in valve body 1, guide pin bushing 6 can not move, so, along with moving upward of the second valve rod 4.2 can make the gap between flap 2 and the lower end surface of guide pin bushing 6, diminish, thereby reduce medium, from the gap between flap 2 and guide pin bushing 6 lower end surfaces, flow out and enter out runner 3.2.Diaphragm 5 can promote stage clip 14 and shrink in uphill process, and when pressure medium reduces, the elastic force of stage clip 14 can promote diaphragm 5 and the second valve rod 4.2 moves downward to realize reset.In order to guarantee the structure seal of valve body 1 inside, the present invention is arranged on all component in the space of valve body 1 and valve gap 11 formation.So, the hexagonal socket nut 13 compressing for stage clip 14 is also arranged on valve gap 11 inside, in order to facilitate the rotation of hexagonal socket nut 13, operator can be rotated hexagonal socket nut 13 with hexagon wrench, and the effect of end cap 12 is to prevent that the impurity such as dust from entering in reduction valve.
Block 9 of the present invention is positioned at the bottom of valve body 1, one-body molded in valve body 1 bottom in this region, is an airtight integral body, thereby guarantees the integrity of valve body 1.The setting of filter screen 15 is in order to prevent that trash flow from resulting in blockage when the gap of guide pin bushing 6 and flap 2, thereby affects the normal work of reduction valve.In the time need to cleaning the filter screen 15 of guide pin bushing 6 outer walls, only the valve of reduction valve entrance point and outlet end (this valve is specifically designed to the opening and closing of reduction valve two ends medium) need to be closed, making the pressure medium in reduction valve is zero, be that medium stops flowing, then the valve gap 11 of outwarding winding, extracts guide pin bushing 6 and can clean filter screen 15.And current reduction valve is after cutting out the valve at reduction valve two ends, because the bottom at valve body 1 can be provided with the positioning hole for flap 2 location, in the process of dismounting valve rod taking-up filter screen, can open positioning hole, so can make medium flow out from positioning hole when cleaning filter screen, so meeting placing container, with recovering medium, avoids medium flow out and cause medium to flash from positioning hole below positioning hole.
Described guide pillar 6.6 numbers can be for a plurality of, and described runner 6.1 can be arranged in every guide pillar 6.6, and described guide pin bushing 6 is made for plastics, can alleviate like this weight of reduction valve integral body.At the first bulge loop 6.8, the second bulge loop 6.9, the 3rd bulge loop 8.1, the 4th bulge loop 8.2, be provided with seal ring 10, to prevent the leakage of medium.
The foregoing is only preferred embodiment of the present invention, not for limiting the scope of the invention.All within the claims in the present invention, any modification of doing, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a reduction valve, it comprises valve body (1), valve rod, valve gap (11), by the device of media drive, filter screen (15), in valve body (1), be provided with and supply the influent stream road (3.1) of media flow and go out runner (3.2), in described valve gap (11), be provided with and the resetting means being connected by the device of media drive, in described influent stream road (3.1), be provided with and prevent that MEDIA FLOW from flowing to out the block (9) of runner (3.2) through bottom, influent stream road (3.1), it is characterized in that: in described valve body (1), be provided with the guide pin bushing (6) for valve stem slides, described filter screen (15) is wrapped on guide pin bushing (6) excircle, the bottom of described valve rod is provided with the flap (2) that coordinates to regulate rate-of flow size with guide pin bushing (6) lower end surface, described guide pin bushing (6) is provided with the runner (6.1) for current downflow on medium along axial direction, in described guide pin bushing (6), be provided with the cavity (6.5) for media flow, the described device by media drive is arranged on valve stem tip, the described chamber (7) that can be sealed with the formation of guide pin bushing (6) inwall by the device of media drive, described guide pin bushing (6) outer circle wall is provided with the water inlet that is communicated with influent stream road (3.1) and cavity (6.5), described runner (6.1) one end is communicated with cavity (6.5) lower end surface, described runner (6.1) the other end is communicated with chamber (7), described cavity (6.5) lower end with go out runner (3.2) and be communicated with.
2. reduction valve according to claim 1, is characterized in that: the angle theta of described guide pin bushing (6) axis and influent stream road (3.1) axis is 40 °～90 °.
3. reduction valve according to claim 1, is characterized in that: described block (9) inner peripheral surface and the same axis of guide pin bushing (6).
4. reduction valve according to claim 1, it is characterized in that: described resetting means comprises stage clip (14), end cap (12), between described stage clip (14) and end cap (12), be provided with hexagonal socket nut (13), described end cap (12) is arranged on valve gap (11) top, and the lower end surface of described hexagonal socket nut (13) is provided with for locating the step surface of stage clip (14).
5. reduction valve according to claim 1, it is characterized in that: described guide pin bushing (6) comprises top (6.2), middle part (6.3), bottom (6.4), described top (6.2) is connected by guide pillar (6.6) with bottom (6.4), described guide pillar (6.6) is along the circumferential direction evenly distributed in cavity (6.5), described runner (6.1) is arranged in guide pillar (6.6) along guide pin bushing (6) axial direction, the outer wall of described guide pillar (6.6) is provided with the projection (6.7) for filter screen (15) are installed, described top (6.2) is provided with the first bulge loop (6.8) with valve body (1) positioned internal, described bottom (6.4) is provided with the second bulge loop (6.9) with valve body (1) positioned internal.
6. reduction valve according to claim 5, is characterized in that: described guide pillar (6.6) number is 4, and described runner (6.1) number is 2, and described runner (6.1) is distributed in a pair of guide pillar (6.6).
7. reduction valve according to claim 5, it is characterized in that: the described device by media drive is piston (8), described valve rod is the first valve rod (4.1), described piston (8) is arranged on the first valve rod (4.1) upper end, described the first valve rod (4.1) middle part is positioned at the cavity (6.5) of guide pin bushing (6), described piston (8) comprises the 3rd bulge loop (8.1) that top (6.2) inner peripheral surface with guide pin bushing (6) is slidably matched and the 4th bulge loop (8.2) being slidably matched with middle part (6.3) inner peripheral surface of guide pin bushing (6), the upper-end surface of described piston (8) is provided with the 5th bulge loop (8.3) for resetting means location.
8. reduction valve according to claim 5, it is characterized in that: the described device by media drive is diaphragm (5), described valve rod is the second valve rod (4.2), it axially screws described the second valve rod (4.2) upper end edge with nut (17) through diaphragm (5) middle part, described the second valve rod (4.2) middle part is positioned at the cavity (6.5) of guide pin bushing (6), on described the second valve rod (4.2), be provided with the guide pad (16) that middle part (6.3) inner peripheral surface with guide pin bushing (6) is slidably matched, described the second valve rod (4.2) upper end is provided with the annular boss (18) that pushes against diaphragm (5) lower surface, described diaphragm (5) outer peripheral surface is fixed between valve gap (11) lower end surface and guide pin bushing (6) upper-end surface.
9. reduction valve according to claim 1, is characterized in that: described block (9) is one-body molded with valve body (1), and the lower surface of described valve body (1) is the integral body of sealing.
10. reduction valve according to claim 1, is characterized in that: described guide pin bushing (6) is to be made by nonmetallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410251158.6A CN104006194A (en) | 2014-06-05 | 2014-06-05 | Reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410251158.6A CN104006194A (en) | 2014-06-05 | 2014-06-05 | Reducing valve |
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| CN104006194A true CN104006194A (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410251158.6A Pending CN104006194A (en) | 2014-06-05 | 2014-06-05 | Reducing valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106402447A (en) * | 2016-11-03 | 2017-02-15 | 海宁市水享净水设备有限公司 | Pressure reducing valve device |
| CN113175560A (en) * | 2021-06-15 | 2021-07-27 | 浙江金隆铜业股份有限公司 | Valve body with pre-filter |
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Application publication date: 20140827 |
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