CN211398674U - Double check valve, combination valve and magnetic control drip-proof combination valve - Google Patents
Double check valve, combination valve and magnetic control drip-proof combination valve Download PDFInfo
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- CN211398674U CN211398674U CN201921862502.XU CN201921862502U CN211398674U CN 211398674 U CN211398674 U CN 211398674U CN 201921862502 U CN201921862502 U CN 201921862502U CN 211398674 U CN211398674 U CN 211398674U
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Abstract
The utility model provides a double check valve, a combined valve and a magnetic control drip-proof combined valve, wherein the combined valve comprises a valve body, a valve cover, a first valve clack, a second valve clack, a first elastic part and a second elastic part; the first valve clack and the second valve clack are coaxially arranged and can be axially and movably arranged in the valve body and the valve cover, and the first elastic piece enables the first valve clack to close the first check hole; the second elastic member causes the second valve flap to close the second check hole; the second elastic piece is connected with the first valve clack and the second valve clack to realize the bidirectional linkage of the first valve clack and the second valve clack; one end of the first valve clack is provided with a first limiting hole, and one end of the second valve clack is movably inserted into the first limiting hole. The double check valves realize the two-way linkage of the first valve clack and the second valve clack through the second elastic piece, can reduce the opening pressure of the double check valves, act rapidly, close rapidly as well, can effectively prevent water flow from flowing backwards, and prevent dripping and leaking. And the overall length of the first valve clack and the second valve clack is reduced, so that the installation space can be reduced.
Description
Technical Field
The utility model relates to the technical field of valves, especially, relate to a two check valves, combination valve and magnetic control antidrip combination valve.
Background
Because of the restriction of the sensitivity of the water meter, when the water quantity of the pipeline is very small, the water meter can not measure the flow, but in actual life, when the water is used by users on the same floor, the water pressure in the pipeline of the users is easy to be unstable, the fluctuation of the water pressure easily causes the water of the pipeline of the users to reversely flow into the municipal main pipeline, the inversion phenomenon of the water meter is caused, the long-time water dripping causes the loss of a water supplier, and the water of the main pipeline is easy to be polluted. However, the valve with the existing one-way double-check structure has a two-stage check structure, and the two check structures are independent and not related to each other, so that the opening pressure of the check valve is high, and the reaction is slow.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need for an improved dual check valve, a combination valve and a magnetic control anti-drip combination valve, which can achieve the linkage of two-stage check structures, reduce the opening pressure of the dual check valve, and operate quickly.
The utility model provides a double check valve, which comprises a valve body and a valve cover, wherein the valve cover is connected with one end of the valve body, a first baffle and a second baffle are arranged in the valve body at intervals, the first baffle is provided with a first check hole, the second baffle is provided with a second check hole, and the double check valve further comprises a first valve clack, a second valve clack, a first elastic part and a second elastic part; the first valve clack and the second valve clack are coaxially arranged and can be axially and movably arranged in the valve body and the valve cover, and the first elastic piece provides elastic support for the first valve clack so that the first valve clack closes the first check hole; the second elastic piece provides elastic support for the second valve flap to enable the second valve flap to close the second check hole; the second elastic piece is connected with the first valve clack and the second valve clack to realize the bidirectional linkage of the first valve clack and the second valve clack; one end of the first valve clack is provided with a first limiting hole, and one end of the second valve clack is movably inserted into the first limiting hole.
In an embodiment of the utility model, be equipped with spacing muscle in the valve gap, be equipped with the spacing hole of second on the spacing muscle, the one end movably of first valve clack penetrates the spacing downthehole of second, first elastic component support hold in first valve clack with between the spacing muscle.
In an embodiment of the utility model, still be equipped with two at least location direction muscle in the valve gap, first valve clack is located between two at least location direction muscle, the biggest external diameter of first valve clack with location direction muscle contact cooperation, with pass through location direction muscle restriction the swing of first valve clack.
In an embodiment of the present invention, the second baffle has a second sealing surface which is in sealing fit with the second valve flap, and one end of the second valve flap abuts against the second sealing surface; the second sealing surface is an inclined surface which forms an included angle with the axial direction of the valve body, or a straight surface which is vertical to the axial direction of the valve body.
In an embodiment of the present invention, the second sealing surface is an inclined plane having a included angle with the axial direction of the valve body, the second valve flap includes a second valve flap frame and a second sealing ring, the second valve flap frame includes a second disk portion and a second valve flap rod connected to one end of the second disk portion, the second valve flap rod is inserted into the first limiting hole, the second disk portion has a conical surface, the conical surface is in sealing fit with the second sealing surface, a sealing ring mounting groove is formed on the conical surface, and the second sealing ring is mounted in the sealing ring mounting groove and is tightly clamped between the second valve flap frame and the second sealing plate.
In an embodiment of the present invention, the second sealing surface is an inclined plane having a included angle with the axial direction of the valve body, one end of the second valve flap has a conical surface, the outer side of the conical surface is covered with a sealing material layer, and the second sealing surface is in sealing fit with the sealing material layer on the conical surface.
In an embodiment of the present invention, the second sealing surface is a straight surface perpendicular to the axial direction of the valve body, the second valve flap includes a second valve flap frame and a second sealing ring, the second valve flap frame includes a second disk portion and a second valve flap rod connected to one end of the second disk portion, the second valve flap rod is inserted into the first limiting hole, the second sealing ring is installed on the disk portion, the end surface of the second sealing ring is abutted against the second sealing surface and the second sealing surface are in sealing fit, and the end surface of the second sealing ring is a straight surface perpendicular to the axial direction of the second valve flap frame.
In an embodiment of the present invention, the first valve flap includes a first valve flap frame and a first sealing ring, the first valve flap frame includes a first disk-shaped portion and a first valve flap rod connected to one end of the first disk-shaped portion, the first limiting hole is located in one end of the first disk-shaped portion, the first sealing ring is installed on the first disk-shaped portion, the first baffle has a first sealing surface in sealing fit with the first valve flap, the first sealing ring abuts against the first sealing surface and the first sealing surface are in sealing fit, and the first sealing surface is a straight surface perpendicular to the axial direction of the valve body.
The utility model provides a combination valve, including above arbitrary two check valves, still include the main valve, the main valve includes the main valve body, main valve gap, valve rod and case, the main valve body with formula structure as an organic whole is connected to the valve body of two check valves, the main valve cover install in on the main valve body, the case is located the main valve is internal in order to control the internal fluidic break-make of main valve, the valve rod is connected the case is followed main valve cover one end is stretched out.
The utility model also provides a magnetic control antidrip combination valve, including above arbitrary two check valves, still include the main valve, the main valve includes the main valve body, main valve lid cover, valve rod, case and magnetic control assembly, the main valve body with the valve body of two check valves is connected as an organic whole structure, the main valve lid is installed on the main valve body, main valve lid cover rotationally installs on the main valve lid, the case is located in the main valve body in order to control the internal fluid break-make of main valve, the valve rod is connected the main valve lid cover with the case; the main valve cover is provided with a valve cover hole, a cover sleeve hole opposite to the valve cover hole is formed in the main valve cover sleeve, the magnetic control assembly comprises a spring and magnetic steel, and the spring abuts against one end of the magnetic steel to enable the magnetic steel to be simultaneously located in the valve cover hole and the cover sleeve hole to lock the main valve.
The utility model provides a two check valves, combination valve and magnetic control antidrip combination valve realizes the two-way linkage of first valve clack and second valve clack through the second elastic component, and during normal water supply, the second non return hole is washed away to the rivers, and the second valve clack passes through the first valve clack of second elastic component promotion to can reduce the opening pressure of two check valves, make first valve clack move along with the second valve clack, open first non return hole, the action is rapid. When water flows back, the first elastic piece closes the first non-return hole, and the second non-return hole can be quickly closed through linkage of the second elastic piece, so that the water flows back can be effectively prevented, dripping is prevented, and the action is rapid. And, the one end of second valve clack inserts in first spacing downthehole for the overall length of first valve clack and second valve clack reduces, can reduce the installation space in the valve body, and it is more convenient to assemble. And the first limiting hole limits the moving direction of the second valve clack, so that the second valve clack can only move along the axial direction of the first limiting hole, and the second valve clack is prevented from shaking greatly.
Drawings
Fig. 1 is a schematic structural view of a magnetic control drip-proof combination valve according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a magnetic control drip-proof combination valve in an open state according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second flap of the double check valve according to an embodiment of the present invention;
fig. 4 is a side view of a valve cover of a dual check valve according to an embodiment of the present invention;
fig. 5 is a cross-sectional view of a valve cover of a dual check valve according to an embodiment of the present invention;
fig. 6 is a perspective view of a valve cover of a dual check valve according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a double check valve according to another embodiment of the present invention.
Description of the main elements
The following detailed description of the invention will be further described in conjunction with the above-identified drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-6, the present invention provides a double check valve, which includes a valve body 1 and a valve cover 2. The valve body 1 is provided with an inlet 101 and an outlet 102, the valve cover 2 is connected to one end of the position of the outlet 102 of the valve body 1, a first baffle plate 11 and a second baffle plate 12 are arranged in the valve body 1 at intervals, the first baffle plate 11 is provided with a first check hole 111, and the second baffle plate 12 is provided with a second check hole 121. The double sealing of the double check valve can be realized by closing the first check hole 111 and the second check hole 121, and the sealing effect is good.
The double check valve further comprises: a first valve flap 3, a second valve flap 4, a first elastic member 5, and a second elastic member 6. The first valve clack 3 and the second valve clack 4 are coaxially arranged and are axially movably arranged in the valve body 1 and the valve cover 2. The first elastic member 5 provides elastic support to the first flap 3 so that the first flap 3 closes the first check hole 111. The second elastic member 6 provides elastic support to the second flap 4 so that the second flap 4 closes the second check hole 121. First valve clack 3 seals first non return hole 111 and has constituted first order non return structure, and second valve clack 4 seals second non return hole 121 and has constituted second grade non return structure, and through two-stage non return structure's sealed, can reach the sealed effect of double insurance, has the antidrip backflow prevention effect of preferred.
The second elastic member 6 connects the first valve flap 3 and the second valve flap 4 to realize the bidirectional linkage of the first valve flap 3 and the second valve flap 4. "the two-way linkage of the first valve flap 3 and the second valve flap 4" means that when the first valve flap 3 moves toward the second valve flap 4, the second valve flap 4 can be driven to move together by the transmission of the second elastic member 6, and when the second valve flap 4 moves toward the first valve flap 3, the first valve flap 3 can be driven to move together by the transmission of the second elastic member 6.
This double check valve passes through second elastic component 6 and realizes the two-way linkage of first valve clack 3 and second valve clack 4, and during normal water supply, rivers flow to export 102 from import 101, and second non return hole 121 is washed away to rivers, and second valve clack 4 promotes first valve clack 3 through second elastic component 6 to can reduce double check valve's cracking pressure, make first valve clack 3 along with second valve clack 4 moves together, open first non return hole 111, the action is rapid. When water flows backwards, namely when the water flows from the outlet 102 to the inlet 101, the first elastic member 5 closes the first non-return hole 111, and the second non-return hole 121 can be quickly closed through the linkage of the second elastic member 6, so that the water flow can be effectively prevented from flowing backwards, the dripping and the leakage can be prevented, and the action is rapid.
The utility model discloses an it lies in that, the one end of first valve clack 3 is equipped with first spacing hole 301, and the one end movably of second valve clack 4 inserts in first spacing hole 301. In this embodiment, one end of the second valve flap 4 is inserted into the first limiting hole 301, so that the overall length of the first valve flap 3 and the second valve flap 4 is reduced, the installation space in the valve body 1 can be reduced, and the assembly is more convenient. In addition, the first stopper hole 301 restricts the moving direction of the second valve flap 4, so that the second valve flap 4 can only move along the axial direction of the first stopper hole 301, and the second valve flap 4 is prevented from greatly shaking.
Further, be equipped with spacing muscle 21 in the valve gap 2, be equipped with the spacing hole 201 of second on the spacing muscle 21, the one end movably of first valve clack 3 penetrates in the spacing hole 201 of second, and first elastic component 5 supports and holds between first valve clack 3 and spacing muscle 21. The second limiting hole 201 limits the moving direction of the first valve clack 3, so that the first valve clack 3 can only move along the axial direction of the second limiting hole 201, and the first valve clack 3 is prevented from shaking greatly.
Still be equipped with two at least location direction muscle 23 in the valve gap 2, first valve clack 3 is located between two at least location direction muscle 23, and the biggest external diameter of first valve clack 3 and the contact cooperation of location direction muscle 23 to through the swing of the first valve clack 3 of location direction muscle 23 restriction. The swing of the first valve clack 3 is limited by the contact and matching of the positioning guide rib 23 and the first valve clack 3, the swing of the first valve clack 3 is further limited, and the first valve clack 3 can move more stably. In this embodiment, the number of the positioning guide ribs 23 is two, and the two positioning guide ribs are respectively located on two opposite sides of the first valve flap 3.
Further, the first valve flap 3 includes a first valve flap frame 30 and a first sealing ring 33, the first valve flap frame 30 includes a first disc portion 31 and a first valve flap rod 32 connected to one end of the first disc portion 31, the first limiting hole 301 is disposed at one end of the first disc portion 31, and the first sealing ring 33 is mounted on the first disc portion 31. First valve clack pole 32 penetrates the spacing hole of second 201 in, first disciform portion 31 be located between two at least location direction muscle 23 and with location direction muscle 23 contact cooperation, the spacing hole of second 201 and location direction muscle 23 are spacing from both ends to first valve clack 3 respectively, play dual spacing effect, can keep the stability that first valve clack 3 removed, reduce the condition of horizontal hunting or rocking.
The first baffle 11 has a first sealing surface 112 which is in sealing fit with the first valve flap 3, the first sealing ring 33 abuts against the first sealing surface 112 and is in sealing fit with the first sealing surface 112, and the first sealing surface 112 is a straight surface which is perpendicular to the axial direction of the valve body 1. In other embodiments, the first sealing surface 112 may be an inclined surface having an angle with the axial direction of the valve body 1, and the first valve flap 3 has a conical surface matching the inclined surface, and the structure of the first valve flap can be referred to as the structure of the sealing matching part of the second valve flap 4 and the second baffle 12.
Further, the second baffle plate 12 has a second sealing surface 122 in sealing engagement with the second valve flap 4, and one end of the second valve flap 4 abuts against the second sealing surface 122. In one embodiment, the second sealing surface 122 is a bevel surface having an angle with the axial direction of the valve body 1, as shown in fig. 1 and 2. In another embodiment, the second sealing surface 122 is a straight surface perpendicular to the axial direction of the valve body 1, as shown in fig. 7.
Referring to fig. 1 and 2, the second sealing surface 122 is a slope having an angle with the axial direction of the valve body 1. Further, the second valve flap 4 includes a second valve flap frame 40 and a second sealing ring 43, the second valve flap frame 40 includes a second disc portion 41 and a second valve flap rod 42 connected to one end of the second disc portion 41, the second valve flap rod 42 is inserted into the first limiting hole 301, the second disc portion 41 has a tapered surface 401, the tapered surface 401 is in sealing fit with the second sealing surface 122, a sealing ring installation groove 402 is formed in the tapered surface 401, and the second sealing ring 43 is installed in the sealing ring installation groove 402 and clamped between the second valve flap frame 40 and the second baffle 12. In this embodiment, the second sealing surface 122 is an inclined surface, the second disc portion 41 of the second valve flap holder 40 has a tapered surface 401 matching with the inclined surface, the inclined surface has a self-centering effect on the second valve flap holder 40, and the "self-centering" means that the inclined surface can guide the second valve flap holder 40 to automatically close the central position of the second check hole 121, so that the sealing is more reliable. In this embodiment, the second valve flap frame 40 and the second sealing ring 43 are two separate parts, but not limited thereto, in another embodiment, one end of the second valve flap 4 has a tapered surface 401, the outside of the tapered surface 401 is covered with a sealing material layer, the second sealing surface 122 is in sealing fit with the sealing material layer on the tapered surface 401, and also has a good sealing effect, and the second valve flap 4 of this embodiment is of an integrated structure, so that the structure is simpler, and the assembly is easy.
Referring to fig. 7, the second sealing surface 122 is a straight surface perpendicular to the axial direction of the valve body 1. Further, the second valve flap 4 includes a second valve flap frame 40 and a second sealing ring 43, the second valve flap frame 40 includes a second disc portion 41 and a second valve flap rod 42 connected to one end of the second disc portion 41, the second valve flap rod 42 is inserted into the first limiting hole 301, the second sealing ring 43 is installed on the second disc portion 41, an end surface of the second sealing ring abuts against a second sealing surface to be in sealing fit with the second sealing surface, and an end surface of the second sealing ring 43 is a straight surface perpendicular to the axial direction of the second valve flap frame 40. In this embodiment, the second sealing ring 43 abuts against the second sealing surface 122 on one side of the second check hole 121 to seal the second check hole 121, and the structure is simple and the sealing effect is good. Similarly, instead of the second gasket 43, one end of the second valve flap holder 40 may be covered with a layer of sealing material.
Further, a first fixing boss 35 is arranged on the first disc portion 31, the first limiting hole 301 is arranged in the first fixing boss 35, a second fixing boss 45 is arranged at the joint of the second disc portion 41 and the second valve clack rod 42, and two ends of the second elastic element 6 are respectively sleeved on the first fixing boss 35 and the second fixing boss 45. Further, the second elastic member 6 is a compression spring. During assembly, only two ends of the second elastic piece 6 are required to be sleeved on the first fixing boss 35 and the second fixing boss 45, and the assembly is very simple and convenient. The second elastic piece 6 has a simple structure, and can realize the quick linkage of the first valve clack 3 and the second valve clack 4. Referring to fig. 2, when the water flow opens the second check hole 121, the second valve flap 4 compresses the second elastic member 6, the second elastic member 6 pushes the first valve flap 3 to move towards the right (with reference to fig. 2), and the first check hole 111 is opened under the action of the water flow and the elastic force of the second elastic member 6, so that the operation is rapid. When the water flows backwards, the first check hole 111 is closed first, the first valve flap 3 compresses the second elastic member 6, the second elastic member 6 pushes the first valve flap 3 to move towards the left (with reference to fig. 2), the second check hole 121 is closed, the operation is rapid, and the double sealing effect is achieved. When the first valve clack 3 fails to seal, the second valve clack 4 continues to seal the second check hole 121 to prevent water from flowing backwards, so that the check valve has a long service life.
The double check valve can be applied to different types of valves, such as gate valves, ball valves, butterfly valves, and the like.
Referring to fig. 1, the present invention further provides a combination valve including the double check valve according to any of the above embodiments. The structure of the double check valve is described above, and is not described herein. The combination valve also includes a main valve including a main valve body 71, a main valve cap 72, a valve stem 74, and a valve spool 75. The main valve body 71 is connected with the valve body 1 of the double check valve to form an integral structure. The main valve cover 72 is mounted on the main valve body 71, the valve body 75 is provided in the main valve body 71 to control the opening and closing of the fluid in the main valve body 71, and the stem 74 is connected to the valve body 75 and extends from one end of the main valve cover 72. The combination valve is actuated to open or close the main valve by rotating the valve stem 74 to extend beyond one end of the main valve cover 72.
Referring to fig. 1, the present invention further provides a magnetic control drip-proof combination valve, including the double check valve described in any of the above embodiments. The structure of the double check valve is described above, and is not described herein. The magnetic control drip-proof combined valve also comprises a main valve, wherein the main valve comprises a main valve body 71, a main valve cover 72, a main valve cover sleeve 73, a valve rod 74, a valve core 75 and a magnetic control assembly. The main valve body 71 is connected with the valve body 1 of the double check valve to form an integral structure. The main valve cover 72 is mounted on the main valve body 71, the main valve cover 73 is rotatably mounted on the main valve cover 72, the valve body 75 is provided in the main valve body 71 to control the opening and closing of the fluid in the main valve body 71, and the stem 74 connects the main valve cover 73 and the valve body 75. The main valve cover 72 is provided with a valve cover hole 721, a cover sleeve hole 731 opposite to the valve cover hole 721 is arranged in the main valve cover sleeve 73, the magnetic control component comprises a spring 76 and a magnetic steel 77, and the spring 76 is abutted against one end of the magnetic steel 77 to enable the magnetic steel 77 to be simultaneously positioned in the valve cover hole 721 and the cover sleeve hole 731 so as to lock the main valve. Specifically, the dedicated magnetic key 8 is adopted to be sleeved on the main valve cover sleeve 73, the magnetic pole of the magnet in the magnetic key 8 is different from the magnetic pole of the magnetic steel 77 of the main valve, the magnetic steel 77 is attracted to compress the spring 76 and move out of the valve cover hole 721 so as to release the locking of the main valve, the main valve cover sleeve 73 can freely rotate, and the valve rod 74 can be driven to rotate by rotating the main valve cover sleeve 73 so as to drive the valve core 75 to open or close the main valve. When the magnetic key 8 is removed, the magnetic steel 77 is pushed into the valve cap hole 721 again under the action of the elastic force of the spring 76, so as to lock the main valve.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.
Claims (10)
1. A double check valve comprises a valve body and a valve cover, wherein the valve cover is connected to one end of the valve body, a first baffle and a second baffle are arranged in the valve body at intervals, the first baffle is provided with a first check hole, the second baffle is provided with a second check hole, and the double check valve further comprises a first valve clack, a second valve clack, a first elastic piece and a second elastic piece; the first valve clack and the second valve clack are coaxially arranged and can be axially and movably arranged in the valve body and the valve cover, and the first elastic piece provides elastic support for the first valve clack so that the first valve clack closes the first check hole; the second elastic piece provides elastic support for the second valve flap to enable the second valve flap to close the second check hole;
the valve is characterized in that the second elastic piece is connected with the first valve clack and the second valve clack to realize the bidirectional linkage of the first valve clack and the second valve clack; one end of the first valve clack is provided with a first limiting hole, and one end of the second valve clack is movably inserted into the first limiting hole.
2. The double check valve of claim 1, wherein a limiting rib is disposed in the valve cover, a second limiting hole is disposed on the limiting rib, one end of the first valve flap movably penetrates into the second limiting hole, and the first elastic member abuts against between the first valve flap and the limiting rib.
3. The double check valve of claim 1, wherein at least two positioning guide ribs are further disposed in the valve cover, the first valve flap is located between the at least two positioning guide ribs, and a maximum outer diameter of the first valve flap is in contact fit with the positioning guide ribs to limit the swinging of the first valve flap through the positioning guide ribs.
4. The double check valve of claim 1, wherein the second flapper has a second sealing surface in sealing engagement with the second valve flap, the second valve flap having one end abutting the second sealing surface;
the second sealing surface is an inclined surface which forms an included angle with the axial direction of the valve body, or a straight surface which is vertical to the axial direction of the valve body.
5. The double check valve of claim 4, wherein the second sealing surface is an inclined surface having an included angle with an axial direction of the valve body, the second valve flap comprises a second valve flap frame and a second sealing ring, the second valve flap frame comprises a second disc portion and a second valve flap rod connected to one end of the second disc portion, the second valve flap rod is inserted into the first limiting hole, the second disc portion has a tapered surface, the tapered surface is in sealing fit with the second sealing surface, a sealing ring installation groove is formed on the tapered surface, and the second sealing ring is installed in the sealing ring installation groove and clamped between the second valve flap frame and the second baffle plate.
6. The double check valve of claim 4, wherein the second sealing surface is a bevel surface having an angle with the axial direction of the valve body, the second valve flap has a tapered surface at one end, the tapered surface is coated with a sealing material layer, and the second sealing surface is in sealing engagement with the sealing material layer on the tapered surface.
7. The double check valve of claim 4, wherein the second sealing surface is a straight surface perpendicular to the axial direction of the valve body, the second valve flap comprises a second valve flap holder and a second sealing ring, the second valve flap holder comprises a second disc portion and a second valve flap rod connected to one end of the second disc portion, the second valve flap rod is inserted into the first limiting hole, the second sealing ring is mounted on the disc portion, the end surface of the second sealing ring abuts against the second sealing surface to be in sealing engagement with the second sealing surface, and the end surface of the second sealing ring is a straight surface perpendicular to the axial direction of the second valve flap holder.
8. The double check valve of claim 1, wherein the first valve flap includes a first valve flap frame and a first seal ring, the first valve flap frame includes a first disk portion and a first valve flap rod connected to one end of the first disk portion, the first limiting hole is disposed at one end of the first disk portion, the first seal ring is mounted on the first disk portion, the first baffle plate has a first seal surface in sealing engagement with the first valve flap, the first seal ring abuts against the first seal surface in sealing engagement with the first seal surface, and the first seal surface is a straight surface perpendicular to the axial direction of the valve body.
9. A combination valve, comprising the double check valve according to any one of claims 1 to 8, further comprising a main valve, wherein the main valve comprises a main valve body, a main valve cover, a valve rod and a valve core, the main valve body is connected with the valve body of the double check valve as an integral structure, the main valve cover is mounted on the main valve body, the valve core is arranged in the main valve body to control the on-off of the fluid in the main valve body, and the valve rod is connected with the valve core and extends out from one end of the main valve cover.
10. A magnetic control anti-drip combined valve, comprising the double check valve according to any one of claims 1 to 8, and further comprising a main valve, wherein the main valve comprises a main valve body, a main valve cover sleeve, a valve rod, a valve core and a magnetic control component, the main valve body and the valve body of the double check valve are connected into an integral structure, the main valve cover is arranged on the main valve body, the main valve cover sleeve is rotatably arranged on the main valve cover, the valve core is arranged in the main valve body to control the on-off of fluid in the main valve body, and the valve rod is connected with the main valve cover sleeve and the valve core; the main valve cover is provided with a valve cover hole, a cover sleeve hole opposite to the valve cover hole is formed in the main valve cover sleeve, the magnetic control assembly comprises a spring and magnetic steel, and the spring abuts against one end of the magnetic steel to enable the magnetic steel to be simultaneously located in the valve cover hole and the cover sleeve hole to lock the main valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921862502.XU CN211398674U (en) | 2019-10-31 | 2019-10-31 | Double check valve, combination valve and magnetic control drip-proof combination valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921862502.XU CN211398674U (en) | 2019-10-31 | 2019-10-31 | Double check valve, combination valve and magnetic control drip-proof combination valve |
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| CN211398674U true CN211398674U (en) | 2020-09-01 |
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| CN201921862502.XU Active CN211398674U (en) | 2019-10-31 | 2019-10-31 | Double check valve, combination valve and magnetic control drip-proof combination valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117090977A (en) * | 2023-09-02 | 2023-11-21 | 上海瑞控阀门有限公司 | Axial flow type check valve |
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2019
- 2019-10-31 CN CN201921862502.XU patent/CN211398674U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117090977A (en) * | 2023-09-02 | 2023-11-21 | 上海瑞控阀门有限公司 | Axial flow type check valve |
| CN117090977B (en) * | 2023-09-02 | 2024-02-20 | 上海瑞控阀门有限公司 | Axial flow type check valve |
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