CN203847741U - Flow adjusting valve - Google Patents
Flow adjusting valve Download PDFInfo
- Publication number
- CN203847741U CN203847741U CN201420290443.4U CN201420290443U CN203847741U CN 203847741 U CN203847741 U CN 203847741U CN 201420290443 U CN201420290443 U CN 201420290443U CN 203847741 U CN203847741 U CN 203847741U
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- CN
- China
- Prior art keywords
- valve
- hole
- tube
- shaped cover
- flap
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- Expired - Fee Related
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Abstract
The utility model discloses a flow adjusting valve which comprises a valve body, a valve deck, a valve rod and a valve clack. A fluid channel is formed in the valve boy. The valve rod extends into the fluid channel after penetrating through the valve deck. The valve body is provided with a deck opening communicated with the fluid channel. The valve deck covers the deck opening in a sealing mode. The valve rod is in sliding fit with the valve deck. The valve clack is fixed to the end of the valve rod and located in the fluid channel. The top wall and the bottom wall of the fluid channel extend to the middle of the fluid channel to form two separating clacks. The two separating clacks are arranged at an interval. A first tubular cover is fixed to the bottom end of the valve clack. A plurality of first through holes are formed in the wall of the first tubular cover. A second tubular cover is fixed to the portion between the two separating clacks and the valve deck. A plurality of second through holes are formed in the wall of the second tubular cover. The valve deck is located in the second tubular cover and is in sliding fit with the second tubular cover in a sealed mode. The first tubular cover is in sliding fit with the two separating clacks in a sealed mode. The diameter of the first tubular cover is smaller than the diameter of the valve deck. According to the flow adjusting valve, fluid media can circulate smoothly and easily, noise is low, cavitation or water hammer can be eliminated, and the service life is long.
Description
Technical field
The utility model relates to modulating valve, is specifically related to flow control valve.
Background technique
The main cause that general flow control valve affects its life-span is sealing mechanism, and conventional valves flap uses stainless steel body to do sealing surface, and the life-span is short, and plug type flap is unfavorable for medium circulation, and its noise is larger, easily produces cavitation erosion or water hammer.
Model utility content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide flow control valve, and it is extremely beneficial to flowing medium circulate, and noise is little, can eliminate cavitation erosion or water hammer, and the life-span is long.
The purpose of this utility model adopts following technological scheme to realize:
Flow control valve, comprise valve body, valve gap, valve rod and flap, in valve body, be provided with fluid passage, valve rod stretches in fluid passage through after valve gap, on valve body, have the lid mouth being communicated with fluid passage, valve gap is sealed on lid mouth, valve rod and valve gap are slidably matched, flap is fixed on the end of valve rod and is arranged in fluid passage, the roof of fluid passage and diapire are extended with two septal leaflets to middle part, fluid passage, separately, the bottom of flap is fixed with the first tube-shaped cover to two septal leaflets, and the cover wall of this first tube-shaped cover has multiple the first through holes; Between two septal leaflets and valve gap, be fixed with the second tube-shaped cover, the cover wall of the second tube-shaped cover has multiple the second through holes; Flap is positioned at the second tube-shaped cover and is slidably matched with the second tube-shaped cover sealing, and the first tube-shaped cover and the sealing of two septal leaflets are slidably matched, and the diameter of the first tube-shaped cover is less than the diameter of flap.
Preferably, the junction surface of described flap and the first tube-shaped cover is made as conical surface, and on this conical surface, heap is welded with hard alloy layer.
Preferably, on described valve rod, have pin-and-hole, this pin-and-hole is furnished with straight pin, and described flap has the tapped hole coordinating with threaded stem, and the hole wall of tapped hole is through with the matching hole corresponding with pin-and-hole position, and described straight pin inserts matching hole and tapped hole.
Preferably, the upper end of described valve gap has closed hole, and sealing hole upper cover has sealing gland, is provided with carbon packing ring between at the bottom of the hole of sealing gland and closed hole, and valve rod is successively through sealing gland and carbon packing ring.
Preferably, the lower end of described valve gap has sliding eye, and the inwall of this sliding eye is provided with lining, and described flap and this lining are slidably matched.
Preferably, between described valve gap and valve body, pad is provided with pad.
Preferably, each described the first through hole is spaced in the shape of a spiral on the cover wall of the first tube-shaped cover, and the size of the first through hole increases gradually from the bottom to top or reduces gradually, and each described the second through hole is evenly spaced on the cover wall of the second tube-shaped cover.
Compared to existing technology, the beneficial effects of the utility model are:
(1) the utility model passes through after the slidable adjustment of valve rod, drive the dislocation up and down of the first tube-shaped cover and the second tube-shaped cover to coordinate the adjusting that realizes valve body aperture, make flow of fluid medium clear and coherent smooth, and this structure can effectively reduce noise, eliminate cavitation erosion or water hammer, extend the life-span of this flow control valve;
(2) the utility model is by realizing stiffened processing to the hard alloy layer of conical surface built-up welding, simultaneously, use sealing gland to compress carbon packing ring and meet valve stem seal, further increase the service life, and, under the connection function of straight pin and tapped hole, make flap and valve rod stable connection, and then realize the efficient durable sealing configuration of flow control valve entirety.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is the cross-sectional schematic of the utility model flow control valve.
In figure: 1, valve body; 2, valve gap; 3, valve rod; 4, flap; 5, fluid passage; 6, Gai Kou; 7, septal leaflet; 8, the first tube-shaped cover; 9, the first through hole; 10, the second tube-shaped cover; 11, the second through hole; 12, hard alloy layer; 13, pin-and-hole; 14, straight pin; 15, tapped hole; 16, matching hole; 17, closed hole; 18, sealing gland; 19, carbon packing ring; 20, sliding eye; 21, lining; 22, pad.
Embodiment
Flow control valve as shown in Figure 1, comprises valve body 1, valve gap 2, valve rod 3 and flap 4, is provided with fluid passage 5 in valve body 1, and valve rod 3 stretches in fluid passage 5 through after valve gap 2, has the lid mouth 6 being communicated with fluid passage 5 on valve body 1.Valve gap 2 is sealed on lid mouth 6, and this example is used fastening piece to lock.Valve rod 3 is slidably matched with valve gap 2, flap 4 is fixed on the end of valve rod 3 and is arranged in fluid passage 5, the roof of fluid passage 5 and diapire are extended with two septal leaflets 7 to 5 middle parts, fluid passage, two septal leaflets 7 separately, the bottom of flap 4 is fixed with the first tube-shaped cover 8, and the cover wall of this first tube-shaped cover 8 has multiple the first through holes 9; The cover wall that is fixed with the second tube-shaped cover 10, the second tube-shaped covers 10 between two septal leaflets 7 and valve gap 2 has multiple the second through holes 11; Flap 4 is positioned at the second tube-shaped cover 10 and is slidably matched with the second tube-shaped cover 10 sealings, and the first tube-shaped cover 8 and two septal leaflet 7 sealings are slidably matched, and the diameter of the first tube-shaped cover 8 is less than the diameter of flap 4.
Slide up and down with various ways actuatable valve bars 3 such as electronic, pneumatic or hydraulic pressure, and then drive flap 4 and the first tube-shaped cover 8 to move up and down, make the first tube-shaped cover 8 and the second tube-shaped cover 10 mutual dislocation, flowing medium is realized the connection of fluid passage 5 through the first through hole 9 and the second through hole 11, and the valve opening that realizes flow control valve regulates.Because flowing medium comes limited flow and pressure by the first through hole 9 and the second through hole 11, thus can reduce noise, avoid cavitation erosion and water hammer.And the seal approach of the seal approach of flap 4 and the second tube-shaped cover 10 and the first tube-shaped cover 8 and two septal leaflets 7 has effectively ensured to increase the service life the sealing effect of the flowing medium process of circulation.
For lift-off seal effect, the junction surface of flap 4 and the first tube-shaped cover 8 is made as conical surface, and on this conical surface, heap is welded with hard alloy layer 12, and flap 4, the first tube-shaped cover 8, in sliding process, can promote durability degree under the effect of hard alloy layer 12.
For ease of coordinating of valve rod 3 and flap 4, and strengthen fitment stability, on valve rod 3, have pin-and-hole 13, this pin-and-hole 13 is furnished with straight pin 14, flap 4 has the tapped hole 15 with valve rod 3 screw-thread fit, the hole wall of tapped hole 15 is through with the matching hole 16 corresponding with pin-and-hole 13 positions, and straight pin 14 inserts matching hole 16 and tapped hole 15.
The upper end of valve gap 2 has closed hole 17.Sealing hole 17 upper covers have sealing gland 18, and this example is used fastening piece to lock.Sealing gland 18 can compacting valve rod 3 and prevent that valve rod 3 is loosening, is provided with carbon packing ring 19 between at the bottom of the hole of sealing gland 18 and closed hole 17, and valve rod 3 is successively through sealing gland 18 and carbon packing ring 19, further lift-off seal effect.
The lower end of valve gap 2 has sliding eye 20, and the inwall of this sliding eye 20 is provided with lining 21, and flap 4 is slidably matched with this lining 21, lining 21 can be set for high-abrasive material, so that lifting life-span or more resleeve 21 extend the working life of flow control valve entirety.Between valve gap 2 and valve body 1, pad is provided with pad 22, and pad 22 can play the seal action of lid mouth 6.
Each the first through hole 9 is spaced in the shape of a spiral on the cover wall of the first tube-shaped cover 8, the size of the first through hole 9 increases gradually from the bottom to top or reduces gradually, each the second through hole 11 is evenly spaced on the cover wall of the second tube-shaped cover 11, the spread configuration of the first through hole 9 and the second through hole 10, be beneficial to the smooth and easy of flowing medium and pass through, prevent turbulent flow.This flow control valve, applicable to pressure P N10～PN160, the flowing medium of-20～600 DEG C, can be gas or liquid etc.
Above-mentioned mode of execution is only preferred implementation of the present utility model; the scope that can not limit with this utility model protection, the variation of any unsubstantiality that those skilled in the art does on basis of the present utility model and replacement all belong to the utility model scope required for protection.
Claims (7)
1. flow control valve, comprise valve body, valve gap, valve rod and flap, in valve body, be provided with fluid passage, valve rod stretches in fluid passage through after valve gap, on valve body, have the lid mouth being communicated with fluid passage, valve gap is sealed on lid mouth, valve rod and valve gap are slidably matched, flap is fixed on the end of valve rod and is arranged in fluid passage, it is characterized in that: the roof of fluid passage and diapire are extended with two septal leaflets to middle part, fluid passage, separately, the bottom of flap is fixed with the first tube-shaped cover to two septal leaflets, and the cover wall of this first tube-shaped cover has multiple the first through holes; Between two septal leaflets and valve gap, be fixed with the second tube-shaped cover, the cover wall of the second tube-shaped cover has multiple the second through holes; Flap is positioned at the second tube-shaped cover and is slidably matched with the second tube-shaped cover sealing, and the first tube-shaped cover and the sealing of two septal leaflets are slidably matched, and the diameter of the first tube-shaped cover is less than the diameter of flap.
2. flow control valve according to claim 1, is characterized in that: the junction surface of described flap and the first tube-shaped cover is made as conical surface, and on this conical surface, heap is welded with hard alloy layer.
3. flow control valve according to claim 1, it is characterized in that: on described valve rod, have pin-and-hole, this pin-and-hole is furnished with straight pin, described flap has the tapped hole coordinating with threaded stem, the hole wall of tapped hole is through with the matching hole corresponding with pin-and-hole position, and described straight pin inserts matching hole and tapped hole.
4. flow control valve according to claim 1, it is characterized in that: the upper end of described valve gap has closed hole, sealing hole upper cover has sealing gland, is provided with carbon packing ring between at the bottom of the hole of sealing gland and closed hole, and valve rod is successively through sealing gland and carbon packing ring.
5. according to the flow control valve described in claim 1～4 any one, it is characterized in that: the lower end of described valve gap has sliding eye, the inwall of this sliding eye is provided with lining, and described flap and this lining are slidably matched.
6. according to the flow control valve described in claim 1～4 any one, it is characterized in that: between described valve gap and valve body, pad is provided with pad.
7. according to the flow control valve described in claim 1～4 any one, it is characterized in that: each described the first through hole is spaced in the shape of a spiral on the cover wall of the first tube-shaped cover, the size of the first through hole increases gradually from the bottom to top or reduces gradually, and each described the second through hole is evenly spaced on the cover wall of the second tube-shaped cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290443.4U CN203847741U (en) | 2014-05-30 | 2014-05-30 | Flow adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290443.4U CN203847741U (en) | 2014-05-30 | 2014-05-30 | Flow adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847741U true CN203847741U (en) | 2014-09-24 |
Family
ID=51560759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420290443.4U Expired - Fee Related CN203847741U (en) | 2014-05-30 | 2014-05-30 | Flow adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847741U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781438A (en) * | 2016-08-26 | 2018-03-09 | 阿自倍尔株式会社 | Regulating valve, valve element and valve shaft |
| CN113251158A (en) * | 2021-05-20 | 2021-08-13 | 安徽中捷自控设备有限公司 | But intelligent electric actuator of switch after outage |
| CN113639091A (en) * | 2021-08-28 | 2021-11-12 | 杭州富阳良工仪表有限公司 | High-precision energy-saving flow regulating valve |
| CN115875469A (en) * | 2023-03-09 | 2023-03-31 | 江苏南极机械有限责任公司 | PV valve pressure relief load sensitive compensation regulation and control system for ballast |
-
2014
- 2014-05-30 CN CN201420290443.4U patent/CN203847741U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781438A (en) * | 2016-08-26 | 2018-03-09 | 阿自倍尔株式会社 | Regulating valve, valve element and valve shaft |
| US10753481B2 (en) | 2016-08-26 | 2020-08-25 | Azbil Corporation | Regulating valve, valve body, and valve stem |
| CN113251158A (en) * | 2021-05-20 | 2021-08-13 | 安徽中捷自控设备有限公司 | But intelligent electric actuator of switch after outage |
| CN113639091A (en) * | 2021-08-28 | 2021-11-12 | 杭州富阳良工仪表有限公司 | High-precision energy-saving flow regulating valve |
| CN113639091B (en) * | 2021-08-28 | 2023-08-18 | 杭州富阳良工仪表有限公司 | High-precision energy-saving flow regulating valve |
| CN115875469A (en) * | 2023-03-09 | 2023-03-31 | 江苏南极机械有限责任公司 | PV valve pressure relief load sensitive compensation regulation and control system for ballast |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20180530 |