CN111336298B - Valve device and pipeline connection structure - Google Patents
Valve device and pipeline connection structure Download PDFInfo
- Publication number
- CN111336298B CN111336298B CN201910718745.4A CN201910718745A CN111336298B CN 111336298 B CN111336298 B CN 111336298B CN 201910718745 A CN201910718745 A CN 201910718745A CN 111336298 B CN111336298 B CN 111336298B
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- Prior art keywords
- nut
- accommodating cavity
- gasket
- valve
- valve device
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 238000004891 communication Methods 0.000 claims description 24
- 230000004308 accommodation Effects 0.000 claims description 9
- 238000012856 packing Methods 0.000 abstract 3
- 239000003507 refrigerant Substances 0.000 description 7
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0237—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member specially adapted for use with attachments, e.g. reduction units, T-pieces, bends or the like
Abstract
The application discloses valve device and pipeline connection structure, the valve device includes valve body and valve rod, the valve body includes the valve port, first connecting portion and second connecting portion, first connecting portion includes first intercommunication passageway, second connecting portion includes the second intercommunication passageway, first connecting portion includes first holding chamber portion and second holding chamber portion, first holding chamber portion and second holding chamber portion switch on with first intercommunication passageway, first holding chamber portion is equipped with the sealing member, second holding chamber portion is equipped with elastic component and nut subassembly, elastic component includes elastic component and packing ring, the packing ring offsets with nut subassembly, elastic component offsets with packing ring and nut subassembly in axial direction; the valve device comprises a connecting pipe, the connecting pipe sequentially abuts against the sealing piece through the nut component, the elastic element, the gasket and the first accommodating cavity part, and the elastic element elastically clamps the connecting pipe. The valve device can promote the sealing reliability between the valve body and the connecting pipe.
Description
The present application claims priority from chinese patent office, application number 201811556600.0, chinese patent entitled "a valve device, plumbing connection," filed on day 19, 12, 2018, the entire contents of which are incorporated herein by reference.
Technical Field
The invention relates to the technical field of refrigeration control, in particular to a valve device and a pipeline connection structure.
Background
The split type air-conditioning apparatus is divided into an indoor unit and an outdoor unit, the two units are connected by a refrigerant pipe, and a shut-off valve is often used in the pipe connection.
The stop valve 100 shown in fig. 1 comprises a pipe connecting end 101, a pipe connecting nut 102 connected with the pipe connecting end 101 and a flared horn-shaped connecting pipe 103, wherein the pipe connecting nut 102 is in threaded connection with the end part of the pipe connecting end 101 of the stop valve, the inner conical sealing surface 121 of the pipe connecting nut 102 presses the horn surface of the flared horn-shaped connecting pipe 103 on the outer conical sealing surface 111 of the pipe connecting end 101 to form conical surface sealing, and the surface contact sealing is realized by pressing the flared horn-shaped connecting pipe 103 through two conical surfaces.
By adopting the technical scheme, the surface contact seal between the connecting pipe 103 and the valve body is realized by adopting larger torque, and the valve body is easy to deform due to the larger torque, so that the hidden danger of refrigerant leakage exists.
In view of this, how to provide a stop valve, to enhance the sealing reliability between the valve body and the adapter tube is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a valve device which can relatively improve the sealing reliability between a valve body and a connecting pipe and relatively reduce hidden danger of refrigerant leakage.
A valve device comprising a valve body and a valve stem, the valve body comprising a valve port, a first connection portion and a second connection portion, the first connection portion comprising a first communication channel, the second connection portion comprising a second communication channel, the valve stem being capable of being brought into proximity to or away from the valve port to close or open the first communication channel to or from the second communication channel;
the first connecting part comprises a first accommodating cavity part and a second accommodating cavity part, the first accommodating cavity part and the second accommodating cavity part are communicated with the first communication channel, the first accommodating cavity part is provided with a sealing element, the second accommodating cavity part is provided with an elastic component and a nut component, the elastic component comprises an elastic element and a gasket, the gasket is propped against the nut component, and the elastic element is propped against the gasket and the nut component in the axial direction;
the valve device further comprises a connecting pipe, the connecting pipe sequentially passes through the nut component, the elastic element, the gasket, the first accommodating cavity part and the sealing piece to be propped against, and the elastic element can elastically clamp the connecting pipe.
Meanwhile, the invention also provides a pipeline connecting structure which comprises a second body part, a first joint part and a second joint part, wherein the first joint part and the second joint part are symmetrically arranged with the central axis of the second body part as a reference;
the second body part is provided with a circulation channel, the first joint part and the second joint part are respectively provided with a first accommodating cavity part and a second accommodating cavity part, and the first accommodating cavity part and the second accommodating cavity part are respectively communicated with the circulation channel;
the first accommodating cavity part is provided with a sealing piece, the second accommodating cavity part is provided with an elastic component and a nut component, the elastic component comprises an elastic element and a gasket, the nut component is propped against the gasket, and the elastic element is propped against the gasket and the nut component in the axial direction;
the pipeline connecting structure is used for connecting a connecting pipe, the connecting pipe can sequentially pass through the nut component, the elastic element, the gasket, the first accommodating cavity and the sealing piece are propped against each other, and the elastic element can elastically clamp the connecting pipe.
According to the invention, the sealing element is arranged at the first accommodating cavity part of the first connecting part of the valve body, the elastic component and the nut component are arranged at the second accommodating cavity part, the elastic component comprises the elastic element and the gasket, when the elastic component is matched with the connecting pipe, the connecting pipe sequentially passes through the nut component, the elastic element, the gasket, the first accommodating cavity and the sealing element to prop against each other, the elastic element is elastically clamped with the connecting pipe, the possibility of refrigerant leakage caused by the connection and sealing of the valve body and the connecting pipe in a conical surface is reduced, the sealing reliability between the valve body and the connecting pipe can be relatively improved, and the hidden danger of refrigerant leakage is relatively reduced.
Drawings
FIG. 1 is a cross-sectional view of a shut-off valve provided by the present invention;
FIG. 2 is a cross-sectional view of a valve apparatus according to one embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of section I of FIG. 2;
FIG. 4 is a schematic structural view of the first connecting portion in FIG. 3;
FIG. 5 is a schematic view of the gasket of FIG. 3 mated with a resilient member;
FIG. 6 is a schematic view of the nut of FIG. 3;
FIG. 7 is a schematic view of the elastic element of FIG. 5 in an embodiment;
FIG. 8 is a front view of FIG. 7;
FIG. 9 is a schematic view of the gasket of FIG. 5 in one embodiment;
FIG. 10 is a schematic view of the structure of FIG. 9 from another perspective;
FIG. 11 is a schematic view of the nut of FIG. 6 in an embodiment;
FIG. 12 is a schematic view of the structure of FIG. 11 from another perspective;
FIG. 13 is a schematic view of the latch of FIG. 6 in an embodiment;
FIG. 14 is a front view of FIG. 13;
FIG. 15 is a schematic view of a pipeline connecting structure according to the first embodiment of the present invention;
fig. 16 is a schematic structural view of a pipeline connecting structure according to a second embodiment of the present invention.
In fig. 1:
stop valve 100, nipple end 101, nipple nut 102, nipple 103, outer conical sealing surface 111, inner conical sealing surface 121;
in fig. 2-16:
the valve body 1, the first connecting portion 11, the first communication passage 111, the first accommodation chamber portion 112, the third stepped surface 1121, the second accommodation chamber portion 113, the top wall portion 1131, the side wall portion 1132, the second connecting portion 12, the second communication passage 121, the bonnet 13;
a valve rod 2, a connecting pipe 31 and a flow pipe 32;
nut assembly 4, nut 41, step 411, slot 412, boss 413, clip 42, first body 421, clip 422, first step 4221, taper 423, first through hole 424, seal 5;
an elastic member 6, a tapered body 61, a burring 62, a first notch 631, and a second notch 632;
the gasket 7, the second stepped surface 71, the second through hole 721, the third accommodation chamber portion 722, the first end portion 73, the second end portion 74, and the gasket body 75;
the pipe connection structure 8, the second main body 81, the first joint 82, the second joint 83, the flow channel 811, and the welded joint 83.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring now to fig. 2-14, wherein fig. 2 is a cross-sectional view of a valve apparatus according to one embodiment of the present invention; FIG. 3 is an enlarged view of a portion of section I of FIG. 2; FIG. 4 is a schematic structural view of the first connecting portion in FIG. 3; FIG. 5 is a schematic view of the gasket of FIG. 3 mated with a resilient member; FIG. 6 is a schematic view of the nut of FIG. 3; FIG. 7 is a schematic view of the elastic element of FIG. 5 in an embodiment; FIG. 8 is a front view of FIG. 7; FIG. 9 is a schematic view of the gasket of FIG. 5 in one embodiment; FIG. 10 is a schematic view of the structure of FIG. 9 from another perspective; FIG. 11 is a schematic view of the nut of FIG. 6 in an embodiment; FIG. 12 is a schematic view of the structure of FIG. 11 from another perspective; FIG. 13 is a schematic view of the latch of FIG. 6 in an embodiment; fig. 14 is a front view of fig. 13.
In a specific embodiment, the present invention provides a valve device, as shown in fig. 2, which includes a valve body 1 and a valve rod 2 located in a valve cavity of the valve body 1, the valve body 1 is provided with a plurality of connection parts for connecting with a connection pipe 31, for example, in fig. 2, a left end of the valve body 1 is provided with a first connection part 11, a lower end is provided with a second connection part 12, wherein the first connection part 11 includes a first communication channel 111, the second connection part 12 includes a second communication channel 121, and both the first communication channel 111 and the second communication channel 121 are communicated with the valve cavity. Meanwhile, the valve body 1 further includes a valve port, the valve stem 2 is movable in the valve cavity to be close to or away from the valve port, so that the above-mentioned first communication passage 111 and second communication passage 121 are closed or conducted, and an upper opening of the valve cavity is closed by the bonnet 13.
Specifically, when the valve rod 2 is in threaded connection with the valve body 1 and the valve rod 2 is rotated, the valve rod 2 can move up and down along the valve cavity axis under the action of the screw pair to block or open the valve port, so that the first communication channel 111 and the second communication channel 121 are disconnected or connected.
When the valve device is applied to an air conditioning system, the valve device is usually installed in an outdoor unit, and in the conventional design, the second connecting part 12 is welded and fixed with an external runner pipe 32, while the first connecting part 11 is detachably connected with an external connecting pipe 31 so as to be convenient for being installed with the indoor unit, and the invention mainly aims at improving the detachable connection structure of the first connecting part 11 and the connecting pipe 31.
It will be appreciated that in practice, a similar structure may be employed if the second connection 12 is also required to be removably connected to the flow tube 32.
In this embodiment, as shown in fig. 2 and 3, the first connecting portion 11 further includes a first accommodating cavity portion 112 and a second accommodating cavity portion 113, where the first accommodating cavity portion 112 and the second accommodating cavity portion 113 are in communication with the first communication channel 111, meanwhile, a sealing member 5 is disposed in the first accommodating cavity portion 112, an elastic component and a nut component 4 are disposed in the second accommodating cavity portion 113, the elastic component includes an elastic element 6 and a washer 7, the washer 7 abuts against the nut component 4, and the elastic element 6 abuts against the washer 7 and the nut component 4 in an axial direction.
Meanwhile, as shown in fig. 3, the valve device further includes a connection pipe 31, the connection pipe 31 is abutted against the sealing member 5 through the nut assembly 4, the elastic member 6, the gasket 7, the first receiving cavity portion 112 in this order, and the elastic member 6 is capable of elastically clamping the connection pipe 31.
It should be noted that, the "inner and outer" are defined herein with reference to the valve cavity of the valve body 1, specifically, the valve cavity is close to the inner side, and the valve cavity is far from the outer side, which is only for convenience of description and understanding, and should not limit the protection scope, and similar to the description is omitted herein.
In the invention, the sealing member 5 is arranged in the first accommodating cavity part 112 of the first connecting part 11 of the valve body 1, the elastic component and the nut component 4 are arranged in the second accommodating cavity part 113, the elastic component comprises the elastic element 6 and the gasket 7, when the elastic component is matched with the connecting pipe 31, the connecting pipe 31 sequentially passes through the nut component 4, the elastic element 6, the gasket 7 and the first accommodating cavity part 112 to prop against the sealing member 5, and the elastic element 6 can elastically clamp the connecting pipe 31, so that the problem of refrigerant leakage possibly caused by conical surface connection sealing in the prior art is overcome, and the sealing reliability and the connection reliability between the valve body 1 and the connecting pipe 31 can be relatively improved, and the hidden danger of refrigerant leakage is relatively reduced.
Specifically, as shown in fig. 3, in the present embodiment, in the second accommodating chamber portion 113, the elastic member 6 elastically clamps the connection pipe 31, and at the same time, the washer 7 and the nut assembly 4 are respectively abutted against both axial end portions of the elastic member 6, and the washer 7 is also abutted against the top wall portion 1131 of the second accommodating chamber portion 113, so that, for the elastic member 6, the washer 7 and the nut assembly 4 respectively press the elastic member 6 from both axial end portions, so that the axial position of the elastic member 6 is fixed, that is, the position between the elastic member 6 and the first connection portion 11 in the axial direction is fixed when the nut assembly 4 is in the locked state.
Therefore, in the present invention, by providing the washer 7 and the elastic member 6 in the second receiving chamber portion 113 and locking by the nut assembly 4, which corresponds to providing a joint capable of connecting a pipe in the first connecting portion 11, when a pipe (e.g., the connecting pipe 31) is required to be connected, only the connecting pipe 31 needs to be inserted and elastically clamped by the elastic member 6, and the reliability of the fixed connection between the elastic member 6 and the connecting pipe 31 is high due to the fixed position of the elastic member 6. At the same time, the arrangement of the above structures also makes the operation when the connection pipe 31 is connected to the first connection portion 11 simple.
More specifically, as shown in fig. 3 and 6, the nut assembly 4 includes a nut 41 and a buckle 42 sleeved on the nut 41, and the buckle 42 is provided with a first through hole 424, and when the first connecting portion 11 is connected with the connecting tube 31, the connecting tube 31 can be matched with the first through hole 424 and pass through the first through hole 424.
Wherein the nut 41 has an external thread, and accordingly, the first connecting portion 11 has an internal thread matching with the external thread, so that when the nut 41 can be screwed into or out of the second accommodating cavity portion 113 of the first connecting portion 11 and the nut 41 is screwed into the predetermined position of the second accommodating cavity portion 113 and cannot be screwed further, the nut assembly 4 is in a locked state, and a pressing force is applied to each component in the second accommodating cavity portion 113, so that each component in the second accommodating cavity portion 113 cannot move; when the nut 41 is screwed out from the second accommodation chamber 113, the pressing force thereof against the respective members is reduced or eliminated.
Meanwhile, as shown in fig. 11 and 12, the outer end face of the nut 41 in the axial direction includes a boss 413 and a groove 412, and the groove 412 is formed between two adjacent bosses 413. The axially outer end surface refers to an axial end surface of the nut 41 away from the valve chamber, and the locking tool is connected to the nut 41 through a groove portion 412 so that the nut 41 can be screwed in or out.
Of course, the structure of the nut 41 is not limited to this, and it may be a structure provided with an internal thread, and accordingly, the first connecting portion 11 is provided with an external thread, and at the same time, the nut 41 further has a pressing member, and when the nut 41 and the first connecting portion 11 are in a connected state, the pressing member can apply pressure to the elastic member 6 and the washer 7, thereby achieving the fixation of the positions of the two. In the present embodiment, when the nut 41 is screwed into the second accommodating cavity 113, the axial end surface of the nut can be used as a pressing member, and other pressing members are not required to be added, so that the structure is simplified.
In this embodiment, as shown in fig. 3, when the nut assembly 4 and the first connecting portion 11 are in a connected state, the buckle 42 is located between the connecting pipe 31 and the nut 41 in a radial direction, so as to prevent the connecting pipe 31 from contacting the nut 41, i.e. the connecting pipe 31 and the nut 41 made of metal are separated by the buckle 42.
Meanwhile, as shown in fig. 2, the elastic member 6 is located between the connection pipe 31 and the side wall portion 1132 of the second receiving chamber portion 113 in a radial direction to prevent the connection pipe 31 from contacting the side wall portion 1132 of the second receiving chamber portion 113, i.e., the connection pipe 31 made of metal is separated from the side wall portion 1132 of the second receiving chamber portion 113 (the first connection portion 11 of the valve body 1) by the elastic member 6 made of non-metal.
Therefore, in the present embodiment, the metal connecting pipe 31, the nut 41 and the first connecting portion 11 are in a non-contact state, so that the design can avoid the potential difference caused by the different metal types of the connecting pipe 31, the nut 41 and the first connecting portion 11, thereby reducing the risk of electric corrosion between the connecting pipe 31, the nut 41 and the first connecting portion 11, and improving the reliability and safety of the valve device.
Based on this, the present application solves the problem that there is a potential difference between the connecting pipe 31, the nut 41 and the first connecting portion 11, and meanwhile, the three can be made of different metal materials, for example, the valve body 1 (including the first connecting portion 11) and the nut 41 of the valve device are made of brass materials, so that the cutting performance is ensured, and the connecting pipe 31 can be made of aluminum materials, so as to save the cost.
Further, as shown in fig. 13 and 14, the buckle 42 includes a first body 421 and a locking portion 422, wherein the locking portion 422 is formed by an outward extending protrusion of the first body 421, and a first step surface 4221 is formed between the locking portion 422 and the first body 421; meanwhile, as shown in fig. 12, the nut 41 includes a small diameter portion and a large diameter portion, wherein a step portion 411 is provided between the small diameter portion and the large diameter portion, as shown in fig. 6, the first body portion 421 of the buckle 42 is adapted to the small diameter portion of the nut 41, and the first step surface 4221 of the buckle 42 abuts against the step portion 411 of the nut 41, so that axial connection between the nut 41 and the buckle 42 is achieved.
Of course, the connection structure between the clip 42 and the nut 41 is not limited thereto, and may be: the nut 41 is provided with a plurality of hooks, and the periphery of the buckle 42 forms a clamping groove which is matched with the periphery of the nut, so that the nut and the buckle are connected.
Further, the buckle 42 further includes a tapered portion 423, and the large diameter end of the tapered portion 423 is connected to the engagement portion 422, so that the tapered portion 423 gradually decreases in diameter in the outside-in direction in the locked state of the nut assembly 4. Meanwhile, as shown in fig. 3, in the locked state, the nut assembly 4 can be fully or partially extended into the tapered body 61 of the elastic member 6.
In the embodiment shown in fig. 3, the taper 423 is located partly in the large diameter portion of the nut 41 and partly extends into the tapered body 61 of the resilient element 6.
On the other hand, as shown in fig. 7 and 8, the elastic member 6 includes a tapered body 61, both axial end portions of the tapered body 61 are open, respectively, a first opening portion and a second opening portion, and the second opening portion has a diameter larger than that of the first opening portion, and extends radially outwardly to form a burring portion 62. Wherein the connection pipe 31 can pass through the first opening, thereby realizing the elastic clamping of the connection pipe 31 by the elastic element 6.
Meanwhile, the flange portion 62 has two axial end surfaces, so that in the locked state of the nut assembly 4, the washer 7 and the nut assembly 4 respectively abut against the two axial end surfaces of the flange portion 62, and the elastic element 6 is axially positioned.
During assembly, in the locked state of the nut assembly 4, the connecting pipe 31 is inserted into the second accommodating cavity portion 113 and the first accommodating cavity portion 112, and the second accommodating cavity portion 112 is provided with the third step surface 1121, so that the connecting pipe 31 cannot be continuously inserted when the axial end surface of the connecting pipe 31 abuts against the third step surface 1121, at this time, the connecting pipe 31 is elastically clamped by the elastic element 6, and in the matching process of the connecting pipe 31 and the elastic element, the elastic element 6 can be deformed to a certain extent along the radial direction, and smooth insertion of the connecting pipe 31 is facilitated. As shown in fig. 3, in the first accommodating chamber 112, the seal member 5 is pressed against and fitted with the gasket 7 and the first connecting portion 11 in the axial direction, and is also pressed against and fitted with the first connecting portion 11 and the connecting tube 31 in the radial direction, so that a reliable seal between the first connecting portion 11 and the connecting tube 31 is achieved.
In this embodiment, the elastic member 6 can realize elastic connection with the connection pipe 31 in addition to the separation of the connection pipe 31 and the first connection portion 11 in the radial direction, and can facilitate the smooth fitting of the connection pipe 31 into the first connection portion 11.
Specifically, as shown in fig. 7 and 8, in the elastic element 6, a plurality of first notch portions 631 extending in the axial direction and uniformly distributed in the circumferential direction are formed at the first opening portion of the tapered body 61, a plurality of second notch portions 632632 penetrating in the radial direction of the burring portion 62 are formed at the burring portion 62, the second notch portions 632 provided at the burring portion 62 extend to the tapered body 61 in the axial direction of the second notch portions 632, and at the same time, the second notch portions 632 provided at the burring portion 62 are uniformly distributed in the circumferential direction.
By such design, the hole end of the conical body 61 has an elastic deformation function, so that the connecting pipe 31 can be inserted into the first accommodating cavity 112, and after the connecting pipe is axially abutted against the third step surface 1121, the conical body 61 is elastically matched with the connecting pipe 31, and the connecting pipe 31 can be prevented from axially moving, so that the axial relative position of the connecting pipe 31 and the connecting pipe can be limited.
The specific number and extension length of the first and second notch portions 631 and 632 may be designed as needed.
Further, as shown in fig. 3 and 4, the second housing chamber portion 113 includes a side wall portion 1132 and a top wall portion 1131, while, as shown in fig. 9 and 10, the gasket 7 includes a gasket body 75, and the gasket body 75 includes a first end portion 73 and a second end portion 74 in the axial direction, and the gasket 7 further has a third housing chamber portion 722 and a second through hole 721 communicating with each other.
In the mounted state, the first end 73 abuts against the top wall portion 1131, the outer peripheral wall of the gasket body 75 abuts against the side wall portion 1132, and the flange portion 62 of the elastic element 6 is adapted to the third accommodating cavity portion 722 of the gasket 7; and the second through hole 721 is located inside the third receiving chamber portion 722 and is adapted to the connection pipe 31. The third receiving chamber portion 722 of the washer 7 is thus adapted to receive the elastic element 6, and the second through-hole 721 is adapted to the connection tube 31 for the connection tube 31 to pass through.
In this embodiment, the elastic element 6 is located entirely within the gasket 7 in the mounted state, so that the mounting space for the components can be saved.
Further, as shown in fig. 9 and 10, the end of the washer 7 opposite to the first end 73 is notched, and after the notch is notched, a second end 74 and a second step surface 71 are formed, that is, the second end 74 is formed by an axially extending projection of the washer body 75 toward the nut 41, and the radial dimension of the second end 74 is smaller than the radial dimension of the first end 73. The flange portion 62 of the elastic element 6 is located in the second step surface 71, and the second end portion 74 abuts against the end surface of the nut 41, and the axial dimension of the second step surface 71 is slightly larger than the axial dimension of the flange portion 62, so that when the nut assembly 4 abuts against the second end portion 74 of the washer 7, a small gap is provided between the nut assembly and the flange portion 62 in the second step surface 71.
In the above embodiments, as shown in fig. 4, the first communication channel 111 includes a first aperture portion, the first accommodating chamber 112 includes a second aperture portion, the second accommodating chamber 113 includes a third aperture portion, and the diameter of the third aperture portion is larger than the diameter of the second aperture portion, and the diameter of the second aperture portion is larger than the diameter of the first aperture portion.
Accordingly, in the first connecting portion 11, a flow hole having a diameter that increases in order from the inside to the outside is formed. The third step surface 1121 is formed between the first aperture portion and the second aperture portion, the top wall 1131 is formed between the second aperture portion and the third aperture portion, and the top wall 1131 and the third step surface 1121 are respectively disposed to abut against the axial end surfaces of the gasket 7 and the connecting pipe 31, so as to limit the axial positions of the two.
In the above embodiments, the sealing member 5 includes a plurality of O-rings, the number of the O-rings needs to ensure that the space of the first accommodating cavity 112 can be filled, and the gasket 7 can be deformed by pressing when being pressed, so as to compress the third step surface 1121, thereby ensuring good sealing performance between the valve body 1 and the connecting pipe 31.
In summary, in the present invention, when the valve body 1 is assembled with the connection pipe 31, the assembly steps are as follows:
s11: placing the seal 5 into the first accommodation chamber 112 of the first connecting portion 11 and against the third step surface 1121;
s12: the gasket 7 is put into the second accommodating cavity portion 113 of the first connecting portion 11 and abuts against the top wall portion 1131;
s13: the elastic element 6 is fitted into the second accommodation chamber portion 113 with its conical body 61 located in the third accommodation chamber portion 722 of the grommet 7, with the burring 62 abutting against the second stepped surface 71 of the grommet 7;
it should be noted that, steps S12 and S13 may also be: first, step S13 is performed, and then the first assembly of the elastic member 6 and the gasket 7 is fitted into the first connecting portion 11 such that the first end portion 73 of the gasket 7 abuts against the top wall portion 1131.
S14: the nut 41 is clamped with the buckle 42 to form a second component;
s15: the second assembly is fitted into the first connection 11 and the nut 41 is brought into abutment with the second end 74 of the washer 7.
In step S15, the second component is specifically rotated through the groove portion 412, so that the external thread of the nut 41 is matched with the internal thread of the first connection portion 11, thereby achieving locking.
S16: the connection pipe 31 is inserted into the first connection portion 11 until the end thereof abuts against the third stepped surface 1121 of the flow hole.
With continued reference to fig. 15 and 16, fig. 14 is a schematic structural diagram of a pipeline connecting structure according to a first embodiment of the present invention; FIG. 15 is a schematic view of a pipeline connection structure according to a second embodiment of the present invention;
meanwhile, the present invention further provides a pipe connection structure 8, as shown in fig. 15 and 16, which includes a second main body 81, a first joint 82 and a second joint 83, wherein the first joint 82 and the second joint 83 are symmetrically disposed about a central axis of the second main body 81. Meanwhile, the second main body 81 is provided with a flow channel 811, the first joint 82 and the second joint 83 are provided with a first accommodating chamber 112 and a second accommodating chamber 113, and the first accommodating chamber 112 and the second accommodating chamber 113 are communicated with the flow channel 811.
Specifically, the first accommodating cavity 112 is provided with a sealing member 5, the second accommodating cavity 113 is provided with an elastic component and a nut component 4, wherein the elastic component comprises an elastic element 6 and a washer 7, the nut component 4 is abutted against the washer 7, and the elastic element 6 is abutted against the washer 7 and the nut component 4 in the axial direction.
The pipe connection structure 8 is used for connecting a connecting pipe 31, the connecting pipe 31 can be abutted against the sealing piece 5 through the nut component 4, the elastic element 6, the gasket 7 and the first accommodating cavity part 112 in sequence, and the elastic element 6 can elastically clamp the connecting pipe 31.
Therefore, in the pipe connection structure 8 of the present invention, by providing the gasket 7 and the elastic element 6 in the flow channel 811 and locking the gasket by the nut assembly 4, it is equivalent to providing a joint capable of connecting a pipe in the flow channel 811, and when the pipe needs to be connected, the connecting pipe 31 is only required to be inserted into and fixed to the elastic element 6, and the fixing connection reliability between the elastic element 6 and the pipe is high due to the fixed position of the elastic element 6. Meanwhile, the arrangement of the above structures also makes the operation when the pipes are connected to the joint portions 82 simple.
In the embodiment shown in fig. 15, the main body 81 is provided with two joint portions 82, and the two joint portions 82 are communicated with each other through a flow passage 811. Of course, the number and positions of the joint portions 82 in the main body 81 may be set according to the actual working conditions.
In the embodiment shown in fig. 16, the main body 81 of the pipe connection structure 8 may further be welded with a welded pipe 83, and a plurality of connectors 82 may be further provided, the connectors 82 are detachably connected to the pipe, and the welded pipe 83 is communicated with each connector 82 through a flow channel 811. Therefore, the pipe connection structure 8 in the present embodiment can be detachably connected to the pipe, and can also be fixedly connected to the pipe.
The valve device and the pipeline connecting structure provided by the invention are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (7)
1. A valve device, characterized by comprising a valve body (1) and a valve rod (2), wherein the valve body (1) comprises a valve port, a first connecting part (11) and a second connecting part (12), the first connecting part (11) comprises a first communication channel (111), the second connecting part (12) comprises a second communication channel (121), and the valve rod (2) can be close to or far away from the valve port so as to enable the first communication channel (111) and the second communication channel (121) to be blocked or communicated;
the first connecting part (11) comprises a first accommodating cavity part (112) and a second accommodating cavity part (113), the first accommodating cavity part (112) and the second accommodating cavity part (113) are communicated with the first communication channel (111), the first accommodating cavity part (112) is provided with a sealing piece (5), the second accommodating cavity part (113) is provided with an elastic component and a nut component (4), the elastic component comprises an elastic element (6) and a gasket (7), the gasket (7) is propped against the nut component (4), and the elastic element (6) is propped against the gasket (7) and the nut component (4) in the axial direction; the second accommodating chamber portion (113) includes a side wall portion (1132) and a top wall portion (1131);
the valve device further comprises a connecting pipe (31), at least part of the connecting pipe (31) is propped against the sealing piece (5) through the nut component (4), the elastic element (6), the gasket (7) and the first accommodating cavity part (112) in sequence, and the elastic element (6) elastically clamps the connecting pipe (31);
the nut assembly (4) comprises a nut (41) and a buckle (42), the first connecting part (11) is provided with an internal thread, the nut (41) is provided with an external thread matched with the internal thread, the nut (41) is screwed into the second accommodating cavity part (113) through the threaded matching action of the internal thread and the external thread, the buckle (42) is sleeved on the nut (41), the buckle (42) is provided with a first through hole (424), and the connecting pipe (31) is matched with the first through hole (424) and penetrates through the first through hole (424);
the elastic element (6) comprises a conical body (61) and a flanging portion (62);
the gasket (7) comprises a first end portion (73), a second end portion (74), a gasket body (75), a third accommodating cavity portion (722) and a second step surface (71), the second end portion (74) extends towards the nut (41) from the gasket body (75), the second end portion (74) abuts against the end face of the nut (41), the axial distance between the second step surface (71) and the nut (41) is larger than the axial size of the flanging portion (62), the first end portion (73) abuts against the top wall portion (1131), the gasket body (75) abuts against the side wall portion (1132), the flanging portion (62) abuts against the third accommodating cavity portion (722), the gasket (7) further comprises a second through hole (721), and the second through hole (721) abuts against the connecting pipe (31).
2. The valve device according to claim 1, wherein the catch (42) comprises a first body portion (421) and a snap-in portion (422), the snap-in portion (422) protruding outwardly from the first body portion (421), the snap-in portion (422) having a first step surface (4221);
the nut (41) comprises a small-diameter portion and a large-diameter portion, the small-diameter portion is connected with the large-diameter portion through a step portion (411), the first body portion (421) is matched with the small-diameter portion, and the first step surface (4221) is propped against the step portion (411).
3. Valve device according to claim 2, wherein the nut (41) further comprises a protruding part (413) and a groove part (412), wherein the protruding part (413) and the groove part (412) are located at one side of the small diameter part, and the groove part (412) is arranged between two adjacent protruding parts (413).
4. A valve device according to claim 3, wherein the resilient element (6) comprises a first opening portion and a second opening portion, the conical body (61) being located between the first opening portion and the second opening portion, the cuff portion (62) extending outwardly from the second opening portion, the second opening portion having a diameter larger than the diameter of the first opening portion;
the flange portion (62) is abutted against the washer (7) and the nut (41) in the axial direction, and the first opening portion elastically clamps the connection pipe (31).
5. The valve device according to claim 4, wherein the elastic member (6) further includes a first notch portion (631) and a second notch portion (632), the first notch portion (631) extends from the first opening portion toward the tapered body (61), the second notch portion (632) extends from the second opening portion toward the tapered body (61), the first notch portion (631) and the second notch portion (632) are provided along a circumferential direction of the tapered body (61), and the first notch portion (631) is provided between two adjacent second notch portions (632).
6. Valve device according to claim 1, characterized in that the catch (42) further comprises a cone (423), which cone (423) protrudes into the interior of the cone body (61).
7. The valve device according to any one of claims 1 to 6, wherein the first communication passage (111) includes a first aperture portion, the first accommodation chamber portion (112) includes a second aperture portion, the second accommodation chamber portion (113) includes a third aperture portion having a diameter larger than that of the second aperture portion, and the second aperture portion has a diameter larger than that of the first aperture portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556600 | 2018-12-19 | ||
| CN2018115566000 | 2018-12-19 |
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| CN111336298A CN111336298A (en) | 2020-06-26 |
| CN111336298B true CN111336298B (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910718745.4A Active CN111336298B (en) | 2018-12-19 | 2019-08-05 | Valve device and pipeline connection structure |
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| CN (1) | CN111336298B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727825B (en) * | 2020-12-23 | 2022-12-06 | 象山兴驰液压润滑有限公司 | Connecting structure of hydraulic distributor |
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| CN107366750A (en) * | 2016-05-11 | 2017-11-21 | 浙江三花智能控制股份有限公司 | A kind of refrigeration system stop valve |
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| JP2001021042A (en) * | 1999-07-07 | 2001-01-26 | Riken Corp | Mechanical pipe joint |
| KR20110125792A (en) * | 2010-05-14 | 2011-11-22 | (주)에쎈테크 | Socket for connecting pipe |
| CN202349429U (en) * | 2011-11-25 | 2012-07-25 | 浙江盾安禾田金属有限公司 | Pipe joint and stop valve |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111336298A (en) | 2020-06-26 |
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