CN104315164A - Multifunctional cutoff valve - Google Patents
Multifunctional cutoff valve Download PDFInfo
- Publication number
- CN104315164A CN104315164A CN201410493351.0A CN201410493351A CN104315164A CN 104315164 A CN104315164 A CN 104315164A CN 201410493351 A CN201410493351 A CN 201410493351A CN 104315164 A CN104315164 A CN 104315164A
- Authority
- CN
- China
- Prior art keywords
- hole
- valve
- valve rod
- screw
- side opening
- 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.)
- Granted
Links
Classifications
-
- 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
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
- F16K13/02—Other constructional types of cut-off apparatus; Arrangements for cutting-off with both sealing faces shaped as small segments of a cylinder and the moving member pivotally mounted
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a multifunctional cutoff valve. A valve body is a cross valve body, and the upper part, lower part, left part and right part of the valve body are communicated. The multifunctional cutoff valve is characterized in that a check valve of a backflow prevention device and a flow rate adjusting valve are arranged in an upper through hole, and a cutoff valve is arranged in a lower through hole; a separating wall is arranged between a water inlet hole and a water outlet hole, so as to avoid the communication of the water inlet hole and the water outlet hole; a separating wall is also arranged between the upper through hole and the lower through hole, the center of the separating wall is provided with a water through hole, the middle part of the water through hole is drilled with a small hole, the upper end and lower end of the water through hole are respectively provided with an annular blade edge, the annular blade edges are used as valve seats of the check valve of the backflow prevention device and the cutoff valve, the side surface of the valve body is provided with a side hole, the side hole is communicated with the water through hole through the small hole, and a mechanism for checking the function of the check valve of the backflow prevention device is arranged in the side hole. The multifunctional cutoff valve has the advantages that the defect of single valve in the prior art is overcome, and the cutoff valve, the flow rate adjusting valve and the backflow prevention device are combined into a whole.
Description
Technical field
The present invention relates to a kind of stop valve, especially relate to the stop valve of one kind of multiple functions.
Background technique
Usually, lead on the lateral of user at water supply line, except reduction valve and water meter are installed, also stop valve, Flow valve and backflow preventer to be installed, because valve kind is more, require larger installing space, bring larger workload to again installation and maintenance, and add investment, also add the hidden danger that joint leaks.
Summary of the invention
The present invention mainly solves the deficiency existing for single valve of prior art, thus develops a kind of stop valve of several functions stop valve, Flow valve and backflow preventer three are combined into one;
Other object of the present invention is: have and detect the whether normal function with measuring hydraulic pressure of backflow preventer performance.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: a kind of stop valve with several functions, valve body is a four-way valve body communicated up and down, water inlet and osculum are positioned on same level axis, upper through hole and lower through-hole are positioned on same vertical axis, it is characterized in that:
Safety check and the flow control valve of backflow preventer is provided with in upper through hole;
Stop valve is provided with in lower through-hole;
Partition wall one is provided with between water inlet and osculum;
Be provided with partition wall two between upper through hole and lower through-hole, described partition wall two central authorities are provided with water port, are drilled with aperture in the middle part of water port;
The upper and lower end of water port is respectively provided with annular sword limit, respectively as the valve seat of backflow preventer safety check and stop valve;
The bottom of upper through hole has an arc inclined hole to be communicated with osculum;
The side of valve body also has side opening, and side opening is communicated with water port by aperture, is provided with the mechanism detecting backflow preventer return valve function in described side opening; The axis of side opening and the intersect vertical axis of upper lower through-hole, and at grade.
Technological scheme of the present invention can also be perfect further:
As preferably, the safety check of backflow preventer and flow control valve contain upper valve rod, guide sleeve, gland, locking nut, back-up ring, spool, spring, sealing gasket one;
Above through hole is cylinder barrel, and the inner hole of cylinder on described upper through hole top and guide sleeve are outer round and smoothly joins, and prevents medium from leaking by O-ring seals two, and cylinder barrel cylindrical is provided with outside thread, screws with the internal thread of gland, in order to be pressed on the upper-end surface of cylinder barrel by guide sleeve;
Described guide sleeve has a stepped shaft endoporus, and the larger endoporus on top is joined to the corresponding outer round and smooth of upper valve rod stage casing, and prevents medium from leaking by O-ring seals one, and bottom is internal thread, screws with the outside thread of hypomere in upper valve rod; When upper valve rod rotates, upper valve rod can move up and down simultaneously;
The center of upper valve rod has one in order to measure the slightness hole of hydraulic pressure, and there is a screw upper end of slightness hole, and fixes handwheel one with bolt one, packing ring one; The middle epimere of upper valve rod is provided with outside thread, screws with the internal thread of locking nut, in order to lock the position of upper valve rod after Flow valve adjust flux; In upper valve rod, the outside thread root of hypomere is provided with to limit upper valve rod and moves upward the ring washer of position; The cylinder of upper valve rod hypomere axostylus axostyle and the blind hole of spool are slided and are joined; Be provided with two radial holes at the root of spool blind hole, when moving in order to prevent spool, produce gas-tight phenomenon.
The profile of described spool is inverted T-shaped, and lower plane is provided with a circular groove, is provided with sealing gasket one in groove, as the flap of backflow preventer safety check, between the upper end and the lower end surface of guide sleeve of the outer omoplate of spool, is provided with spring.
As preferably, described sealing gasket one and sealing gasket two are fixed in circular groove with screw one, packing ring three and screw two, packing ring four respectively.
As preferably, described stop valve includes sealing gasket two, pressing plate, O-ring seals three, bottom flange, lower valve rod, O-ring seals four, packing ring two, bolt two, handwheel two, screw two, packing ring four;
The internal thread that the outside thread of bottom flange is corresponding to lower through-hole screws, and is pressed on the lower end surface of lower through-hole, prevents medium from leaking by O-ring seals three; After installation, the axis of bottom flange is consistent with the axis of upper and lower through hole; Bottom flange has a stepped shaft endoporus, and the external diameter of the endoporus that below is larger and lower valve rod hypomere is sliding joins, and prevent medium from leaking by O-ring seals four, top is provided with screw, screws with the outside thread in lower valve rod stage casing.
Described lower valve rod is a multidiameter shaft, and the axostylus axostyle of its upper end is equipped with pressing plate, and the upper plane of pressing plate is provided with an annular groove, is provided with the flap of sealing gasket two as stop valve in groove; The lower end of lower valve rod is fixed with handwheel two, and when rotating handwheel two, lower valve rod can drive sealing gasket three to move up and down, and opens or closes stop valve.
As preferably, corresponding conical valve seat and O-ring seals five in adjusting screw, side opening are contained in the mechanism detecting backflow preventer return valve function;
Internal thread and the concentric taper hole as valve seat is provided with in side opening;
Adjusting screw one end is provided with handwheel, the outside thread in bar portion and the internal thread adaptation of side opening, and the other end car of adjusting screw has frustum, and the taper hole of described frustum and side opening is adaptive, and frustum is provided with O-ring seals five; The center of adjusting screw is drilled with blind hole, and diametric(al) is drilled with two radial holes two, and blind hole communicates with radial hole two;
After installation, the axis of adjusting screw is consistent with the axis of side opening.
Beneficial effect of the present invention:
The invention solves the deficiency existing for single valve of prior art, develop a kind of stop valve with several functions stop valve, Flow valve and backflow preventer three are combined into one; And there is the whether normal function with measuring hydraulic pressure of detection backflow preventer performance.Both save investment and also save installing space, easy to maintenance.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of front of the present invention longitudinal sectional view;
Accompanying drawing 2 is side longitudinal sectional views of Fig. 1.
Description of reference numerals: 1, bolt one, 2, packing ring one, 3, handwheel one, 4, upper valve rod, 5, locking nut, 6, gland, 7, O-ring seals one, 8, O-ring seals two, 9, guide sleeve, 10, back-up ring, 11, spool, 12, spring, 13, sealing gasket one, 14, sealing gasket two, 15, pressing plate, 16, valve body, 17, O-ring seals three, 18, bottom flange, 19, lower valve rod, 20, O-ring seals four, 21, packing ring two, 22, bolt two, 23, handwheel two, 24, screw one, 25, packing ring three, 26, screw two, 27, packing ring four; 28, O-ring seals five, 29, adjusting screw;
A, water inlet, B, osculum, G, water port, H1, upper through hole, H2, lower through-hole, H3, side opening, W1, partition wall one, W2, partition wall two;
A, arc inclined hole, b, slightness hole, C, aperture, d, radial hole one, e, blind hole, f, radial hole two.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technological scheme of the present invention is described in further detail.
Embodiment:
Stop valve as shown in Figure 1, 2, valve body 16 is the four-way valve bodies communicated up and down, water inlet A and osculum B is positioned on same level axis, and upper through hole H1 and lower through-hole H2 is positioned on same vertical axis, and two axial lines intersects vertically and in the same plane.Water inlet A and the outer end of osculum B are provided with internal thread (or outside thread or flange) and are connected with intake pipe and outlet conduit respectively, and holes does not directly communicate, and centre has partition wall one W1 to be separated by; Be provided with partition wall two W2 between upper through hole H1 and lower through-hole H2, central authorities are provided with water port G, and the axis of water port G is consistent with the axis of upper and lower through hole, and middle part is drilled with aperture C; The upper and lower end of water port G is respectively provided with annular sword limit, respectively as the valve seat of backflow preventer safety check and stop valve; The bottom of upper through hole H1 has an arc inclined hole a to be communicated with osculum B; The side of valve body 16 also has side opening H3, is communicated with water port G by aperture C, the axis of side opening H3 and the intersect vertical axis of upper lower through-hole H1, H2, and at grade.
The safety check of backflow preventer and flow control valve are arranged in through hole H1, are made up of parts such as bolt 1, packing ring 1, handwheel 1, upper valve rod 4, locking nut 5, gland 6, O-ring seals 1, O-ring seals 28, guide sleeve 9, back-up ring 10, spool 11, spring 12, sealing gasket 1, screw 1 and packing rings 3 25.The inner hole of cylinder on upper through hole H1 top and guide sleeve 9 are outer round and smoothly joins, and prevents medium from leaking by O-ring seals 28; The internal thread of the outside thread on cylinder barrel cylindrical and gland 6 screws, in order to be pressed on the upper-end surface of cylinder barrel by guide sleeve 9.After installation, the axis of guide sleeve is consistent with the axis of upper lower through-hole H1, H2; Guide sleeve has a stepped shaft endoporus, the larger endoporus on top is joined to the corresponding outer round and smooth of upper valve rod 4 stage casing, and prevent medium from leaking by O-ring seals 1, bottom is internal thread, screw with the outside thread of hypomere in upper valve rod 4, therefore, when rotation handwheel 1 makes upper valve rod 4 rotate, upper valve rod 4 can move up and down simultaneously.
After installing, the axis of upper valve rod 4 is consistent with the axis of upper lower through-hole H1, H2, and there is an elongated hole b at its center, and there is a screw upper end of hole b, and in order to measure hydraulic pressure, and fix handwheel 1 with bolt 1, packing ring 1, packing ring 1 can prevent leaked water; The middle epimere outside thread of upper valve rod 4 and the internal thread of locking nut 5 screw, in order to lock the position of upper valve rod 4 after Flow valve adjust flux; The root of upper valve rod 4 lower end axostylus axostyle is provided with ring washer 10, in order to limit the position that upper valve rod 4 moves upward; The cylindrical of axostylus axostyle and the blind hole of spool 11 are slided and are joined.
The profile of spool 11 is inverted T-shaped, and lower plane is provided with a circular groove, is provided with sealing gasket 2 13 in groove, as the flap of backflow preventer safety check, and is fixed in circular groove with screw 1, packing ring 3 25; Be provided with two radial hole d at the root of spool 11 blind hole, when moving in order to prevent spool 11, produce gas-tight phenomenon.
Spring 12 is provided with between the upper end and the lower end surface of guide sleeve 9 of the outer omoplate of spool 11, spring 12 has certain pretightening force after mounting, therefore, when not water flowing, sealing gasket 1 is close on the annular sword limit above the G of water port all the time, and for avoiding excessive flow resistance loss, pretightening force is unsuitable excessive, as long as safety check can cut out rapidly and seal reliable when ensureing that medium flows backwards, the pressure of opening recommending safety check is 0.01 ± 0.002MPa.
Stop valve is arranged in the lower through-hole H2 of valve body 16, is made up of parts such as sealing gasket 2 14, pressing plate 15, O-ring seals 4 20, O-ring seals 3 17, bottom flange 18, lower valve rod 19, O-ring seals 4 20, packing ring 2 21, bolt 2 22, handwheel 2 23, screw 2 26, packing rings 4 27.The internal thread that the outside thread of bottom flange 18 is corresponding to lower through-hole H2 screws, and is pressed on the lower end surface of lower through-hole H2, prevents medium from leaking by O-ring seals 3 17; After installation, the axis of bottom flange 18 is consistent with the axis of upper and lower through hole H1, H2; Bottom flange 18 has a stepped shaft endoporus, and the external diameter of the endoporus that below is larger and lower valve rod 19 hypomere is sliding joins, and prevent medium from leaking by O-ring seals 4 20, the screw of top and the outside thread in lower valve rod 19 stage casing screw.
Lower valve rod 19 is multidiameter shafts, the axostylus axostyle of its upper end is equipped with pressing plate 15, and the upper plane of pressing plate 15 is provided with an annular groove, is provided with sealing gasket 2 14 in groove, as the flap of stop valve; Pressing plate 15 is fixed on the axostylus axostyle of lower valve rod 19 by screw 2 26, packing ring 4 27, and is fixed on by sealing gasket 2 14 in the groove of pressing plate 15; The lower end of lower valve rod 19 is fixed with handwheel 2 23, and when rotating handwheel 2 23, lower valve rod 19 can drive sealing gasket 2 14 to move up and down, and opens or closes stop valve.
The organization establishes detecting backflow preventer return valve function, in the side opening H3 of valve body 16, is made up of the part such as conical valve seat and O-ring seals 5 28 corresponding in adjusting screw 29, side opening H3.Be provided with internal thread and the concentric taper hole as valve seat in side opening H3, the outside thread in internal thread and adjusting screw 29 stage casing screws.The cylindrical of the handwheel of adjusting screw 29 one end has rolled straight burr, and the other end car has frustum, and frustum is provided with O-ring seals 5 28, and frustum tapering is consistent with side opening H3 internal taper hole tapering.The center of adjusting screw 29 is drilled with blind hole e, and diametric(al) is drilled with two radial hole f, and hole e and f communicates.After installation, the axis of adjusting screw 29 is consistent with the axis of side opening H3.
Function analysis of the present invention:
1, in normal water supply situation, stop valve is in whole open position, now, the press water P1 of water intake overcomes the pressure of spring 12, by spool upwards jack-up, valve port is opened, and water flows out, to downstream water supply from osculum B through water inlet A, lower through-hole H2, water port G, upper through hole H1, arc inclined hole a.
2, in water supply process, if owing to cutting off the water supply suddenly or the reason such as upstream line maintenance, import hydraulic pressure is caused to be negative pressure, or outlet hydraulic pressure is when significantly increasing to over suddenly import hydraulic pressure, valve port is closed rapidly by sealing gasket 1 under the promotion of spring 12, prevents downstream addle or toxic substance to pollute clean water source.
3, during adjust flux, first stop valve all should be opened, then locking nut 5 is unclamped, rotate handwheel 1, due to moving up and down of upper valve rod 4, change the distance △ between upper valve rod 4 lower end surface and spool 11 blind hole bottom surface, so just change the aperture of valve port, also namely change flow, regulate after meeting the requirements, then locking nut 5 is locked.
It should be noted that, adjusted flow is peak rate of flow, if in use require once in a while comparatively small flow time, can turn down stop valve aperture realize.
4, when hydraulic pressure will be measured, first close stop valve, then the bolt 1 at upper valve rod 4 top and packing ring 1 are unloaded, load onto pressure gauge, again open stop valve water flowing, can hydraulic pressure value be recorded.
5, when to test as backflow preventer return valve function whether lower normal time, first stop valve is closed, then adjusting screw 29 is slowly exited, if check valve seal is damaged, or sealing valve port place is blocked by foreign material, so the water in downstream can pass through water port G, aperture C, side opening H3, radial hole two f, continuously outflows from the blind hole e of adjusting screw 29.Because inspection method is very simple, again without any need for instrument, therefore can check at any time, whether the function of Timeliness coverage safety check is normal.
6, there is stop valve function, except stop valve structure of the present invention, still can adopt the stop valve of other structure.
Claims (5)
1. one kind has the stop valve of several functions, valve body (16) is a four-way valve body communicated up and down, water inlet (A) and osculum (B) are positioned on same level axis, and upper through hole (H1) and lower through-hole (H2) are positioned on same vertical axis, it is characterized in that:
Safety check and the flow control valve of backflow preventer is provided with in upper through hole (H1);
Stop valve is provided with in lower through-hole (H2);
Partition wall one (W1) is provided with between water inlet (A) and osculum (B);
Be provided with partition wall two (W2) between upper through hole (H1) and lower through-hole (H2), described partition wall two central authorities are provided with water port (G),
Middle part, water port (G) is drilled with aperture (c);
The upper and lower end of water port (G) is respectively provided with annular sword limit, respectively as the valve seat of backflow preventer safety check and stop valve;
The bottom of upper through hole (H1) has arc inclined hole (a) to be communicated with osculum (B);
The side of valve body (16) also has side opening (H3), and side opening is communicated with water port (G) by aperture (c), described side opening
(H3) mechanism detecting backflow preventer return valve function is provided with in; The intersect vertical axis of the axis of side opening (H3) and upper lower through-hole (H1), (H2), and at grade.
2. the stop valve with several functions according to claim 1, is characterized in that:
The safety check of backflow preventer and flow control valve contain upper valve rod (4), guide sleeve (9), gland (6), locking nut (5), back-up ring (10), spool (11), spring (12), sealing gasket one (13);
Above through hole (H1) is cylinder barrel, the inner hole of cylinder on described upper through hole (H1) top and guide sleeve (9) is round and smooth outward joins, and prevent medium from leaking by O-ring seals two (8), cylinder barrel cylindrical is provided with outside thread, screw with the internal thread of gland (6), in order to guide sleeve (9) is pressed on the upper-end surface of cylinder barrel;
Described guide sleeve (9) has a stepped shaft endoporus, and the larger endoporus on top is joined to the corresponding outer round and smooth of upper valve rod (4) stage casing, and prevents medium from leaking by O-ring seals one (7); Bottom is internal thread, screws with the outside thread of hypomere in upper valve rod (4), and when upper valve rod (4) rotates, upper valve rod (4) can move up and down simultaneously;
The center of upper valve rod (4) has one in order to measure the slightness hole (b) of hydraulic pressure, and there is a screw upper end of slightness hole (b), and fixes handwheel one (3) with bolt one (1), packing ring one (2); The middle epimere of upper valve rod (4) is provided with outside thread, screws with the internal thread of locking nut (5), in order to lock the position of upper valve rod (4) after Flow valve adjust flux; In upper valve rod (4), the outside thread root of hypomere is provided with the ring washer (10) limiting the position that upper valve rod (4) moves upward; The cylinder of upper valve rod (4) hypomere axostylus axostyle and the blind hole of spool (11) are slided and are joined; Be provided with two radial holes (d) at the root of spool (11) blind hole, during in order to prevent spool (11) mobile, produce gas-tight phenomenon;
The profile of described spool (11) is inverted T-shaped, lower plane is provided with a circular groove, be provided with sealing gasket one (13) in groove, as the flap of backflow preventer safety check, between the upper end of spool (11) outer omoplate and the lower end surface of guide sleeve (9), be provided with spring (12).
3. the stop valve with several functions according to claim 1 and 2, is characterized in that:
Described sealing gasket one (13) and sealing gasket two (14) use screw one (24), packing ring three (25) and screw two (26) respectively, packing ring four (27) is fixed in circular groove.
4. the stop valve with several functions according to claim 1 and 2, is characterized in that:
Described stop valve includes sealing gasket two (14), pressing plate (15), O-ring seals three (17), bottom flange (18), lower valve rod (19), O-ring seals four (20), packing ring two (21), bolt two (22), handwheel two (23), screw two (26), packing ring four (27);
The outside thread of bottom flange (18) and the corresponding internal thread of lower through-hole (H2) screw, and are pressed on the lower end surface of lower through-hole (H2), prevent medium from leaking by O-ring seals three (17); After installation, the axis of bottom flange (18) is consistent with the axis of upper and lower through hole (H1, H2); Bottom flange (18) has a stepped shaft endoporus, and the external diameter of the endoporus that below is larger and lower valve rod (19) hypomere is sliding joins, and prevent medium from leaking by O-ring seals four (20), top is provided with screw, screws with the outside thread in lower valve rod (19) stage casing;
Described lower valve rod (19) is a multidiameter shaft, the axostylus axostyle of its upper end is equipped with pressing plate (15), and the upper plane of pressing plate (15) is provided with an annular groove, is provided with the flap of sealing gasket two (14) as stop valve in groove; And sealing gasket two (14) is fixed in the groove of pressing plate (15); The lower end of lower valve rod (19) is fixed with handwheel two (23), and when rotating handwheel two (23), lower valve rod (19) can drive sealing gasket three (14) to move up and down, and opens or closes stop valve.
5. the stop valve with several functions according to claim 1 and 2, is characterized in that:
Corresponding conical valve seat and O-ring seals five (28) in adjusting screw (29), side opening (H3) are contained in the mechanism detecting backflow preventer return valve function;
Internal thread and the concentric taper hole as valve seat is provided with in side opening (H3);
Adjusting screw (29) one end is provided with handwheel, and the internal thread of the outside thread in screw rod portion and side opening (H3) is adaptive, and the other end car of adjusting screw has frustum, and the taper hole of described frustum and side opening (H3) is adaptive, and frustum is provided with O-ring seals five (28); The center of adjusting screw (29) is drilled with blind hole (e), and diametric(al) is drilled with two radial holes two (f), and described blind hole communicates with radial hole two;
After installation, the axis of adjusting screw (29) is consistent with the axis of side opening (H3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410493351.0A CN104315164B (en) | 2014-09-24 | 2014-09-24 | There is the stop valve of several functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410493351.0A CN104315164B (en) | 2014-09-24 | 2014-09-24 | There is the stop valve of several functions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104315164A true CN104315164A (en) | 2015-01-28 |
| CN104315164B CN104315164B (en) | 2016-06-22 |
Family
ID=52370441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410493351.0A Active CN104315164B (en) | 2014-09-24 | 2014-09-24 | There is the stop valve of several functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104315164B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134971A (en) * | 2015-09-28 | 2015-12-09 | 苏州洛特兰新材料科技有限公司 | Check valve for ammonia |
| CN105736816A (en) * | 2016-03-19 | 2016-07-06 | 许月进 | Control valve of water feeding pipeline of hydraulic water well drilling rig |
| CN110206893A (en) * | 2019-06-10 | 2019-09-06 | 刘艳文 | A kind of shut-off valve convenient for adjusting |
| CN112032368A (en) * | 2020-09-01 | 2020-12-04 | 超达阀门集团股份有限公司 | Anti-seize lifting check valve |
| WO2021228712A1 (en) * | 2020-05-15 | 2021-11-18 | A. u. K. Müller GmbH & Co. KG | Valve with a backflow preventer |
| CN114210281A (en) * | 2022-01-29 | 2022-03-22 | 无锡恒诚硅业有限公司 | Slurry reaction tank waste heat recovery system |
| CN115370760A (en) * | 2022-10-21 | 2022-11-22 | 胜利阀门有限公司 | Bivalve cuts check valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3906991A (en) * | 1972-11-09 | 1975-09-23 | Beringer Hydraulik Gmbh | Hydraulic lowering check valve |
| CN2869473Y (en) * | 2005-05-22 | 2007-02-14 | 陈国平 | Multifunctional valve |
| CN2869474Y (en) * | 2005-05-22 | 2007-02-14 | 陈国平 | Multifunctional valve |
| CN203784325U (en) * | 2014-04-19 | 2014-08-20 | 郑珊红 | Multifunctional adjusting stop valve |
| CN204114182U (en) * | 2014-09-24 | 2015-01-21 | 杭州春江阀门有限公司 | There is the stop valve of several functions |
-
2014
- 2014-09-24 CN CN201410493351.0A patent/CN104315164B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3906991A (en) * | 1972-11-09 | 1975-09-23 | Beringer Hydraulik Gmbh | Hydraulic lowering check valve |
| CN2869473Y (en) * | 2005-05-22 | 2007-02-14 | 陈国平 | Multifunctional valve |
| CN2869474Y (en) * | 2005-05-22 | 2007-02-14 | 陈国平 | Multifunctional valve |
| CN203784325U (en) * | 2014-04-19 | 2014-08-20 | 郑珊红 | Multifunctional adjusting stop valve |
| CN204114182U (en) * | 2014-09-24 | 2015-01-21 | 杭州春江阀门有限公司 | There is the stop valve of several functions |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134971A (en) * | 2015-09-28 | 2015-12-09 | 苏州洛特兰新材料科技有限公司 | Check valve for ammonia |
| CN105736816A (en) * | 2016-03-19 | 2016-07-06 | 许月进 | Control valve of water feeding pipeline of hydraulic water well drilling rig |
| CN110206893A (en) * | 2019-06-10 | 2019-09-06 | 刘艳文 | A kind of shut-off valve convenient for adjusting |
| WO2021228712A1 (en) * | 2020-05-15 | 2021-11-18 | A. u. K. Müller GmbH & Co. KG | Valve with a backflow preventer |
| CN112032368A (en) * | 2020-09-01 | 2020-12-04 | 超达阀门集团股份有限公司 | Anti-seize lifting check valve |
| CN112032368B (en) * | 2020-09-01 | 2022-06-03 | 超达阀门集团股份有限公司 | Anti-seize lifting check valve |
| CN114210281A (en) * | 2022-01-29 | 2022-03-22 | 无锡恒诚硅业有限公司 | Slurry reaction tank waste heat recovery system |
| CN115370760A (en) * | 2022-10-21 | 2022-11-22 | 胜利阀门有限公司 | Bivalve cuts check valve |
| CN115370760B (en) * | 2022-10-21 | 2022-12-20 | 胜利阀门有限公司 | Bivalve cuts check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104315164B (en) | 2016-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104315164A (en) | Multifunctional cutoff valve | |
| US8459305B2 (en) | Dual chamber orifice fitting | |
| CN106151540B (en) | Adjustable quantitative sampling valve | |
| CN108662172A (en) | The one-way flow used in a kind of deep water is from underwater gate valve of releasing | |
| KR100915391B1 (en) | Opening and Shutting Valve | |
| CN106500930B (en) | Airtight, the heavy water bulk testing equipment of porous part | |
| CN204114182U (en) | There is the stop valve of several functions | |
| CN205449171U (en) | Structure of zero resistance orifice flowmeter and definite its flow correction coefficient | |
| KR20120019047A (en) | Installation apparatus of plug for stopping gas flowing in gas pipe | |
| CN202733017U (en) | Hand stop valve | |
| CN205781131U (en) | Micro-resistance pressure reduction type backflow preventer | |
| CN105927767A (en) | Novel low-resistance backflow preventer | |
| KR200464589Y1 (en) | The Pressure Reducing Valve having ball type angle valve | |
| JP4224600B2 (en) | Underground decompression stop cock | |
| CN105020415B (en) | A kind of multi-functional adjustable cut-off valve | |
| JP2007240283A (en) | Water meter system, foreign matter removing method using it, water leakage inspection method, and water quality inspection method | |
| CN101270852B (en) | Pipeline leak detection device | |
| CN212107153U (en) | Valve device for gas pipe | |
| CN204477473U (en) | cutting ball valve | |
| RU2539405C1 (en) | Pressure gauge fitting with lock mechanism | |
| CN104295774B (en) | Anti-backflow and anti-freeze stop valve | |
| JP6066699B2 (en) | Agricultural diversion valve and diversion water supply system using the diversion valve | |
| CN208138538U (en) | Accurate flow-limiting valve | |
| CN101832418A (en) | Quick automatic cut-off instrument valve | |
| CN206710032U (en) | A kind of airtight, the heavy water bulk testing equipment of porous part |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |