CN201982704U - Low-noise stepwise pressure-reducing flow-control valve - Google Patents
Low-noise stepwise pressure-reducing flow-control valve Download PDFInfo
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- CN201982704U CN201982704U CN2011200249622U CN201120024962U CN201982704U CN 201982704 U CN201982704 U CN 201982704U CN 2011200249622 U CN2011200249622 U CN 2011200249622U CN 201120024962 U CN201120024962 U CN 201120024962U CN 201982704 U CN201982704 U CN 201982704U
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Abstract
The utility model discloses a low-noise stepwise pressure-reducing flow-control valve, wherein a valve seat is arranged in a valve body, a throttle-valve plate is welded at the bottom end of a window-type sleeve and positioned on the top surface of the valve seat, a valve core is positioned in the window-type sleeve, the open end of the valve core is abutted against the inclined surface of the valve seat, a sealing retainer ring, a shaft sealing ring and a pressure plate are sequentially arranged on a step on the top surface of the valve core, the open end of a valve cover is sleeved in the open end of the valve body and abutted against the top surface of the window-type sleeve, a middle-cavity metal sealing ring is arranged between the valve body and the valve cover, a middle flange is sleeved on the outer ring of the valve cover and fixed on the valve body, a pressure ring is arranged between the middle flange and the valve body, one end of a valve rod is connected with the valve core, the other end of the valve rod penetrates out of a through hole on the top surface of the valve cover, a packing pad and a packing are arranged between the valve rod and the through hole on the top surface of the valve cover, a packing pressure cover and a packing pressure plate are sleeved in the top end of the valve rod, and the packing pressure plate is fixed on the top surface of the valve cover through a bolt. The defects of the traditional control valve are overcome by the flow-control valve, the low-noise stepwise pressure-reducing flow-control valve has the characteristics of low noise, cavitation prevention, steam-corrosion prevention and scouring prevention, the safety performance of a pipeline system is improved, and the maintenance cost of the pipeline system is lowered.
Description
Technical field
The utility model relates to a kind of low noise flow control valve that reduces pressure step by step.
Background technique
In modern pipeline fluid control, because the raising of automaticity, flow, pressure control to medium require to compete day by day, and existing flow control valve is mostly in the majority with simple forms such as single valve seat, bivalve seats, this form control valve its control stability under complex working condition is relatively poor, the accurately flow and the pressure of medium in the controlling plumbing fixtures, and large bore valves can't be realized the zero leakage requirement, easily produce during little aperture wash away, defectives such as cavitation, high noisy, reduce the pipe-line system Safety performance, improved the pipe-line system maintenance cost simultaneously.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of low noise flow control valve that reduces pressure step by step, this flow control valve has overcome the defective of traditional control valve, have low noise, anti-cavitation, anti-cavitation, protection against erosion characteristic, improve the pipe-line system Safety performance, reduce the pipe-line system maintenance cost.
For solving the problems of the technologies described above, the utility model low noise flow control valve that reduces pressure step by step comprises and is provided with opening end, the valve body of input cavity and output cavity, described input cavity and output cavity are straight-through type or angie type, also comprise valve seat, spool, valve rod, valve gap, the window type sleeve, some throttle plates, Sealing shield ring, the axle seal ring, pressing plate, the lumen metal o-ring, pressure ring, middle flange, Packing seat, filler, Gland and hold-down grid, described valve seat is located at the interior also bottom surface of described valve body against the surface of contact between described valve body input cavity and the output cavity, described valve seat end face inner ring is provided with the inclined-plane, described some throttle plates are welded in described window type sleeve bottom and are positioned at described valve seat end face, described spool is the cylindrical shell of an end opening and is positioned at described window type sleeve, described valve core opening end is against the inclined-plane of valve seat, described spool end face outer ring is provided with step, described Sealing shield ring, axle with seal ring and pressing plate be located at successively on the step of described spool end face also pressing plate by bolt in the spool end face, described valve gap is in the cylindrical shell of an end opening and the opening end that opening end is sheathed on described valve body, described valve gap opening end is against the end face of described window type sleeve, described lumen metal o-ring is located between the opening end of the opening end of described valve body and valve gap, described valve gap end face has through hole and opening end is provided with step, flange is sheathed on described valve gap outer ring and by the opening end of bolt in described valve body in described, described pressure ring is located between described middle flange and the valve body openings end and is positioned on the step of described valve gap opening end, described valve rod one end is located at described spool end face center by screw thread and bearing pin, the other end passes the through hole of described valve gap end face, described Packing seat and filler are located between described valve rod and the valve gap end face through hole successively, described Gland and hold-down grid are inserted in described valve stem tip and the described filler of Gland compacting successively, described hold-down grid by bolt in described valve gap end face.
For improving the sealability of valve seat and valve body, above-mentioned valve seat bottom surface is provided with the flute profile potted line.
For improving the sealability of valve seat and spool, above-mentioned valve core sealed cover and valve seat end face are ball type of contact surface.
Spool reliably contacts with valve seat when guaranteeing the valve closing state, and the spool end face equidistantly has some through holes along the circle spacing.
Further, above-mentioned throttle plate two sides is respectively equipped with step-down runner and through hole, and the step-down runner on the described throttle plate two sides layout that meets at right angles is in the described through hole step-down runner located therein.
Further, press inclined to one side clamping stagnation valve rod for preventing hold-down grid, the surface of contact of above-mentioned Gland and hold-down grid is a sphere, and is reliable compacting filler, and the inclined-plane is adopted in the lower end surface of above-mentioned Gland.
Further, above-mentioned filler adopts nickel wire to twine graphite packing, and this filler has the characteristics of lubricated and high abrasion resistance.
Further, the window shape of above-mentioned window type sleeve is a rectangle or trapezoidal, and is two or four symmetrical distributions.
Flow control valve has adopted technique scheme because the utility model low noise reduces pressure step by step, be that valve seat is located in the valve body, some throttle plates are welded in window type sleeve bottom and are positioned at the valve seat end face, spool is the cylindrical shell of an end opening and is positioned at the window type sleeve, its opening end is against the inclined-plane of valve seat, spool end face outer ring is provided with step, Sealing shield ring, axle with seal ring and pressing plate be located at successively on the step of spool end face also pressing plate by bolt in the spool end face, valve gap is in the cylindrical shell of an end opening and the opening end that opening end is sheathed on valve body, the valve gap opening end is against window type sleeve end face, the lumen metal o-ring is located between the opening end of the opening end of valve body and valve gap, the valve gap end face has through hole and opening end is provided with step, in flange be sheathed on the valve gap outer ring and by the opening end of bolt in valve body, pressure ring is located between middle flange and the valve body openings end, valve rod one end is located at center spool by bearing pin, the other end passes the through hole of valve gap end face, Packing seat and filler are located between valve rod and the valve gap end face through hole successively, Gland and hold-down grid are inserted in valve stem tip and Gland compacting filler successively, hold-down grid by bolt in the valve gap end face.This flow control valve has overcome the defective of traditional control valve, has low noise, anti-cavitation, anti-cavitation, protection against erosion characteristic, improves the pipe-line system Safety performance, reduces the pipe-line system maintenance cost.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is reduce pressure the step by step structural representation of flow control valve of the utility model low noise,
Fig. 2 is the structural representation of throttle plate and window type sleeve in this flow control valve,
Fig. 3 is the Facad structure schematic representation of throttle plate in this flow control valve,
Fig. 4 is the structure schematic representation of throttle plate in this flow control valve.
Embodiment
As depicted in figs. 1 and 2, the utility model low noise flow control valve that reduces pressure step by step comprises and is provided with opening end 23, the valve body 1 of input cavity 21 and output cavity 22, described input cavity 21 and output cavity 22 are straight-through type or angie type, also comprise valve seat 2, spool 4, valve rod 16, valve gap 15, window type sleeve 25, some throttle plates 3, Sealing shield ring 5, axle seal ring 6, pressing plate 7, lumen metal o-ring 9, pressure ring 11, middle flange 12, Packing seat 17, filler 18, Gland 19 and hold-down grid 20, described valve seat 2 is located at described valve body 1 interior also bottom surface against the surface of contact 24 between described valve body input cavity 21 and the output cavity 22, described valve seat 2 end face inner rings are provided with the inclined-plane, described some throttle plates 3 are welded in described window type sleeve 25 bottoms and are positioned at described valve seat 2 end faces, described spool 4 is the cylindrical shell of an end opening and is positioned at described window type sleeve 25, described spool 4 opening ends are against the inclined-plane of valve seat 2, described spool 4 end face outer rings are provided with step, described Sealing shield ring 5, axle is located on the step of described spool 4 end faces also with seal ring 6 and pressing plate 7 successively, and pressing plate 7 is fixed in spool 4 end faces by bolt 8, in the opening end 23 that cylindrical shell that described valve gap 15 is an end opening and opening end are sheathed on described valve body 1, described valve gap 15 opening ends are against the end face of described window type sleeve 25, described lumen metal o-ring 9 is located between the opening end of the opening end of described valve body 1 and valve gap 15, described valve gap 15 end faces have through hole and opening end is provided with step, described middle flange 12 is sheathed on described valve gap 15 outer rings and is fixed in the opening end of described valve body 1 by bolt 13, described pressure ring 11 is located between described middle flange 12 and valve body 1 opening end 23 and is positioned on the step of described valve gap 15 opening ends, described valve rod 16 1 ends are located at described spool 4 end face centers by screw thread and bearing pin 10, the other end passes the through hole of described valve gap 15 end faces, described Packing seat 17 and filler 18 are located between described valve rod 16 and the valve gap 15 end face through holes successively, described Gland 19 and hold-down grid 20 are inserted in described valve rod 16 tops and the described filler 18 of Gland 19 compactings successively, and described hold-down grid 20 is fixed in described valve gap 15 end faces by bolt 14.
For improving the sealability of valve seat and valve body, above-mentioned valve seat 3 bottom surfaces are provided with the flute profile potted line.
For improving the sealability of valve seat and spool, above-mentioned spool 4 sealing surfaces and valve seat 3 end faces are ball type of contact surface.
Spool reliably contacts with valve seat when guaranteeing the valve closing state, and above-mentioned spool 4 end faces equidistantly have some through holes 41 along the circle spacing.The quantity of through hole and diameter are followed according to valve pressure and bore setting, and it act as upstream pressure is conducted in the valve gap cavity, utilize the anti-spool that pushes away of upstream pressure to carry out closing assistedly, play the requirement of reduction to actuator.
As shown in Figure 3 and Figure 4, further, above-mentioned throttle plate 3 two sides are respectively equipped with step-down runner 31,32 and through hole 33, and the step-down runner 31,32 on the described throttle plate two sides layout that meets at right angles is in the described through hole 33 step-down runners 32 located therein.Through hole 33 is followed and is determined according to negotiability, and form a step-down process with runner 31,32, at first carry out a step-down 80%, recover by runner 31 back segments again by runner 31 leading portions, by through hole 33 step-down once more, purpose is to prevent the too fast cavitation that causes of medium step-down, controls flow velocity simultaneously and prevents to wash away and reduce noise.
As shown in Figure 1, further, press inclined to one side clamping stagnation valve rod for preventing hold-down grid, above-mentioned Gland 19 is a sphere with the surface of contact of hold-down grid 20, and is reliable compacting filler, and the inclined-plane is adopted in the lower end surface of above-mentioned Gland 19.
Further, above-mentioned filler 18 adopts nickel wire to twine graphite packing, and this filler has the characteristics of lubricated and high abrasion resistance.
As shown in Figure 2, further, the window 26 of above-mentioned window type sleeve 25 is shaped as rectangle or trapezoidal, and is two or four symmetrical distributions, and requires specifically to be provided with the area and the quantity of window according to the Operational Limits of valve.
The spool of this flow control valve can adopt balanced type ball face sealing spool, order ground is to utilize the anti-spool that pushes away of the active force of medium own closely to contact with valve seat, reach the effect of closing of valve, reduced demand, be reduced in the cost that drops on the drive unit drive unit thrust.The sealing surface of spool adopts spherical structure to make it contact the linear contact increase of anchor ring with valve seat and closes effect, and the spool head also can adopt hardening process to make more wear-resisting, the antiscour of spool.
Valve seat adopts replaceable hard contact valve seat, and purpose is that valve body and valve seat can be broken away from, and can change after valve seat is impaired and need or not change to reduce the maintenance cost of valve together with valve body maintenance.The common pile-up welding hard alloy material of valve seat and guarantee the prolongation in working life.
The control unit that throttle plate and window type sleeve constitute valve is the core of whole valve, it has step by step by some that the throttle plate and the pressure welding of window type sleeve overall vacuum of buck functionality form, every throttle plate all forms step-down runner step by step separately, design circulation area by the demand operating mode in the runner, and take step-down step by step design, prevent to produce cavitation because of step-down is too fast, simultaneously with flow speed control in lowest range, play preventing that flow velocity is too high to the washing away of spool, valve seat, it is minimum that noise is dropped to.Spool moves up and down in the window type sleeve and opens or closes successively that window area reaches the control flow rate size on throttle plate upper runner and the sleeve.The window type sleeve is designed to equal percentage, straight line, correction equal percentage curve by the valve demand characteristics.Small-bore, small flow, High Pressure Difference total travel all adopt step-down throttle plate step by step; Heavy caliber, big-flow high-pressure difference adopt 30% stroke step-down throttle plate step by step, and 70% controls with the window type sleeve.Dual mode all is provided with intrinsic curve (straight line, equal percentage, correction equal percentage are linear) as required for user demand, two kinds of control unit purposes all are downstream pressure, flow to be satisfied under the prerequisite of service condition velocity of medium is controlled in the lowest range, having reduced medium so as much as possible washes away spool and valve seat, the step-down of adopting because of the step-down mode of medium step by step, avoided the damage of the cavitation, cavitation of medium to the full extent, prolonged the working life of valve valve body and each assembly.
The lumen metal o-ring adopts self sealing structure, seal ring adopts titaniferous metallic seal material, under middle flange pressure, thereby valve gap is guaranteed that in the valve body wedge is real valve pocket is airtight, contain titanium metal material and compare with common flexible sealing material and be difficult for getting loose and damaging, improved the sealing effect of valve body.
Sealing adopts the axle that strengthens the tetrafluoroethylene material to use seal ring between spool and the valve gap, contains multiple compositions such as different proportion graphite, bronze powder, glass in this material prescription.Select the different proportion prescription for use according to operating mode, catered to high temperature resistant, high pressure resistant, wear-resistant, airtight specific (special) requirements such as tight.
Valve body is a valve body, according to valve operating mode demand, can select welding or form of flanges, and structural type has straight-through type or angie type etc.
Valve seat is independent ring-shaped valve seats, being convenient to impaired back changes, flute profile potted line with two 1.5mm of valve body surface of contact employing, the active force that while is applied by middle flange, be passed to valve seat by valve gap, throttle plate, valve seat and valve body closely cooperate, and reach sealing fully, effectively prevent that medium from flowing into valve pocket between valve seat and valve body.Valve seat outer ring and valve body and throttle plate adopt Spielpassung, thereby make valve body, valve seat, throttle plate all the time on same axis, prevent that effectively catching phenomenon from appearring in valve in running.
Throttle plate and window type sleeve are the flow control primary components, according to the modular design of operating mode demand, making.Have low noise, anti-cavitation, anti-cavitation, inherent characteristic curve, move up and down, open the runner hole of closing every Rectifier plate and adjust downstream pressure, flow by spool.The throttle plate cylindrical cooperate with valve body same adopt Spielpassung guarantee with the valve body center on same axis, prevent that clamping stagnation from appearring in valve in running.
Spool is the valve opening and closing element, and spool adopts bearing pin to be connected with valve rod.Adjust open degree according to operating mode and reach system requirements, the through hole of spool end face is an equalizing orifice, when the valve closing state, makes the preceding medium of valve enter spool back, utilizes reaction force to promote spool and reliably contacts with valve seat.
The sealing ring washer is used to adjust the height of axle with seal ring.Axle is installed on the spool step with seal ring, and the medium that is used to isolate in the valve gap cavity flow into the valve body output cavity.Pressing plate is used for fixing sealing ring washer and axle seal ring.
Pressure ring is used for adjusting the gap between flange and the valve body.
Middle flange on valve body, relies on the active force of bolt to make in lumen metal o-ring wedging valve body and the valve gap gap by bolt.Flange has actuator and connects screw simultaneously, can be connected with multiple actuator.
Valve rod can adopt heavy typing stainless steel material and handle through heat treatment process, drives valve core movement by connecting external actuator, reaches the unlatching of valve or closes.
Triangle or inclined design can be adopted in the upper end portion of Packing seat, and filler more can closely be contacted with valve gap with valve rod.
Claims (8)
1. low noise flow control valve that reduces pressure step by step, comprise and be provided with opening end, the valve body of input cavity and output cavity, described input cavity and output cavity are straight-through type or angie type, it is characterized in that: also comprise valve seat, spool, valve rod, valve gap, the window type sleeve, some throttle plates, Sealing shield ring, the axle seal ring, pressing plate, the lumen metal o-ring, pressure ring, middle flange, Packing seat, filler, Gland and hold-down grid, described valve seat is located at the interior also bottom surface of described valve body against the surface of contact between described valve body input cavity and the output cavity, described valve seat end face inner ring is provided with the inclined-plane, described some throttle plates are welded in described window type sleeve bottom and are positioned at described valve seat end face, described spool is the cylindrical shell of an end opening and is positioned at described window type sleeve, described valve core opening end is against the inclined-plane of valve seat, described spool end face outer ring is provided with step, described Sealing shield ring, axle with seal ring and pressing plate be located at successively on the step of described spool end face also pressing plate by bolt in the spool end face, described valve gap is in the cylindrical shell of an end opening and the opening end that opening end is sheathed on described valve body, described valve gap opening end is against the end face of described window type sleeve, described lumen metal o-ring is located between the opening end of the opening end of described valve body and valve gap, described valve gap end face has through hole and opening end is provided with step, flange is sheathed on described valve gap outer ring and by the opening end of bolt in described valve body in described, described pressure ring is located between described middle flange and the valve body openings end and is positioned on the step of described valve gap opening end, described valve rod one end is located at described spool end face center by screw thread and bearing pin, the other end passes the through hole of described valve gap end face, described Packing seat and filler are located between described valve rod and the valve gap end face through hole successively, described Gland and hold-down grid are inserted in described valve stem tip and the described filler of Gland compacting successively, described hold-down grid by bolt in described valve gap end face.
2. the low noise according to claim 1 flow control valve that reduces pressure step by step, it is characterized in that: described valve seat bottom surface is provided with the flute profile potted line.
3. the low noise according to claim 1 flow control valve that reduces pressure step by step, it is characterized in that: described valve core sealed cover and valve seat inclined-plane are ball type of contact surface.
4. the low noise according to claim 1 flow control valve that reduces pressure step by step, it is characterized in that: described spool end face equidistantly has some through holes along the circle spacing.
5. the low noise according to claim 1 flow control valve that reduces pressure step by step, it is characterized in that: described throttle plate two sides is respectively equipped with step-down runner and through hole, the step-down runner on the described throttle plate two sides layout that meets at right angles is in the described through hole step-down runner located therein.
6. the low noise according to claim 1 flow control valve that reduces pressure step by step, it is characterized in that: the surface of contact of described Gland and hold-down grid is a sphere, the lower end surface of described Gland is the inclined-plane.
7. the low noise according to claim 1 flow control valve that reduces pressure step by step is characterized in that: described filler is that nickel wire twines graphite packing.
8. the low noise according to claim 1 flow control valve that reduces pressure step by step, it is characterized in that: the window shape of described window type sleeve is a rectangle or trapezoidal, and is two or four symmetrical distributions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200249622U CN201982704U (en) | 2011-01-26 | 2011-01-26 | Low-noise stepwise pressure-reducing flow-control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200249622U CN201982704U (en) | 2011-01-26 | 2011-01-26 | Low-noise stepwise pressure-reducing flow-control valve |
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| Publication Number | Publication Date |
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| CN201982704U true CN201982704U (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200249622U Expired - Fee Related CN201982704U (en) | 2011-01-26 | 2011-01-26 | Low-noise stepwise pressure-reducing flow-control valve |
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| CN (1) | CN201982704U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537484A (en) * | 2012-01-20 | 2012-07-04 | 浙江恒森实业集团有限公司 | Electromagnetic valve with differential pressure resistance valve core |
| CN102635699A (en) * | 2012-04-17 | 2012-08-15 | 南京华宁阀门有限公司 | Regulating cut-off-type discharging exhaust valve |
| CN103244748A (en) * | 2013-05-09 | 2013-08-14 | 哈尔滨松林电站设备有限公司 | Anti-air-erosion dewatering regulating valve |
| CN103591315A (en) * | 2013-11-20 | 2014-02-19 | 无锡智能自控工程股份有限公司 | Elastic C-shaped ring double-seat sealed cage type adjusting valve |
| CN109373000A (en) * | 2019-01-02 | 2019-02-22 | 波普科技(唐山)有限公司 | Piston valve |
-
2011
- 2011-01-26 CN CN2011200249622U patent/CN201982704U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537484A (en) * | 2012-01-20 | 2012-07-04 | 浙江恒森实业集团有限公司 | Electromagnetic valve with differential pressure resistance valve core |
| CN102537484B (en) * | 2012-01-20 | 2013-12-04 | 浙江恒森实业集团有限公司 | Electromagnetic valve with differential pressure resistance valve core |
| CN102635699A (en) * | 2012-04-17 | 2012-08-15 | 南京华宁阀门有限公司 | Regulating cut-off-type discharging exhaust valve |
| CN102635699B (en) * | 2012-04-17 | 2013-07-17 | 南京华宁阀门有限公司 | Regulating cut-off-type discharging exhaust valve |
| CN103244748A (en) * | 2013-05-09 | 2013-08-14 | 哈尔滨松林电站设备有限公司 | Anti-air-erosion dewatering regulating valve |
| CN103244748B (en) * | 2013-05-09 | 2015-10-21 | 哈尔滨松林电站设备有限公司 | Anti-cavitation drain regulating valve |
| CN103591315A (en) * | 2013-11-20 | 2014-02-19 | 无锡智能自控工程股份有限公司 | Elastic C-shaped ring double-seat sealed cage type adjusting valve |
| CN103591315B (en) * | 2013-11-20 | 2016-01-20 | 无锡智能自控工程股份有限公司 | Elasticity C type ring two-seater sealing cage type regulating valve |
| CN109373000A (en) * | 2019-01-02 | 2019-02-22 | 波普科技(唐山)有限公司 | Piston valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20180126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |