CN215928454U - Valve assembly and engine assembly - Google Patents
Valve assembly and engine assembly Download PDFInfo
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- CN215928454U CN215928454U CN202121158039.8U CN202121158039U CN215928454U CN 215928454 U CN215928454 U CN 215928454U CN 202121158039 U CN202121158039 U CN 202121158039U CN 215928454 U CN215928454 U CN 215928454U
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Abstract
The utility model provides a valve assembly and an engine assembly, relates to the technical field of valves and aims to solve the technical problem that an existing valve is easy to leak water when installed. The valve assembly comprises a valve and a mounting device, wherein the mounting device is used for connecting the valve with a machine body part, one of the valve and the machine body part is provided with a connector, and the other of the valve and the machine body part is provided with a rod body which can be inserted and fixed in the connector; the inner wall of the connector is provided with internal threads, the periphery of the rod body is provided with a first external thread section and a second external thread section, the first external thread section and the second external thread section are arranged at intervals along the axial direction of the rod body, and the second external thread section is in threaded connection with the internal threads; the mounting device comprises a sealing element and a pressing element, the sealing element is sleeved on the rod body and is positioned between the first external thread section and the second external thread section, the pressing element is in threaded connection with the first external thread section and presses the sealing element, and the sealing element abuts against and is tightly arranged between the rod body and the interface. The valve assembly has higher sealing reliability.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a valve assembly and an engine assembly.
Background
The valve is a part for opening and closing a pipeline, controlling flow direction, adjusting and controlling parameters of a conveying medium, can be arranged on a pipeline or a machine body part such as equipment, and can be divided into a shut-off valve, a check valve, an adjusting valve and the like according to the function of the valve.
In order to avoid the leakage of a medium from a joint between the valve and the machine body part, two sealing modes are generally adopted between the valve and the machine body part, wherein one mode is that a sealing pipe is connected in a threaded mode, and the other mode is that a straight thread is connected in a sealing mode; the sealing pipe thread connection means that the valve and the machine body piece are respectively provided with matched sealing pipe threads so as to form sealing between the valve and the machine body piece through the thread connection between the sealing pipe threads. When adopting straight thread sealing connection to set up the screw hole on organism spare, set up the external screw thread on the valve as the example, need set up a lock washer on the external screw thread, by lock washer with the sealed pad of cover on the external screw thread impress between external screw thread and the screw hole, form sealed.
The sealing reliability of the sealing connection mode between the existing valve and the machine body part is poor, and the medium leakage is easily caused.
SUMMERY OF THE UTILITY MODEL
To solve at least one of the problems mentioned in the background, the present invention provides a valve assembly and an engine assembly capable of having better sealing reliability.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
in a first aspect, the present invention provides a valve assembly, which includes a valve and a mounting device, wherein the mounting device is used for connecting the valve with a machine body member, one of the valve and the machine body member is provided with a port, and the other of the valve and the machine body member is provided with a rod body which can be inserted and fixed in the port;
an internal thread is arranged on the inner wall of the connector, a first external thread section and a second external thread section are arranged on the periphery of the rod body, the first external thread section and the second external thread section are arranged at intervals along the axial direction of the rod body, and the second external thread section is in threaded connection with the internal thread;
the mounting device comprises a sealing element and a pressing element, the sealing element is sleeved on the rod body and is located between the first external thread section and the second external thread section, the pressing element is in threaded connection with the first external thread section and presses the sealing element, and the sealing element is abutted against the rod body and the interface.
In a possible embodiment, a smooth hole section is provided at a position of the interface not covered by the internal thread, the smooth hole section is provided near an end of the interface, and the sealing member abuts against between a hole wall of the smooth hole section and the rod body.
In a possible embodiment, the unthreaded bore section comprises a tapered bore, the cross-section of which is arranged to increase in a direction away from the threaded bore.
In a possible embodiment, the pressing element comprises a locking nut, which is screwed to the first external thread section.
In a possible embodiment, the pressing member includes a flat washer, and the flat washer is sleeved on the rod body and located between the lock nut and the sealing member to transmit the pressure of the lock nut to the sealing member.
In one possible embodiment, the second external thread section is a straight thread.
In one possible embodiment, the seal comprises an O-ring seal.
In one possible embodiment, the valve is a water discharge valve mounted on the body member.
In a possible embodiment, the connection is formed on the body part, and the lever is formed by the valve body of the discharge valve.
In a second aspect, the present invention provides an engine assembly comprising an engine and a valve assembly as described above mounted on the engine.
According to the valve assembly and the engine assembly provided by the utility model, the first external thread section and the second external thread section are arranged on the periphery of the rod body at intervals, and the sealing element is arranged on the polish rod between the first external thread section and the second external thread section; meanwhile, the pressing piece applies pressure to the sealing piece, the sealing piece is abutted between the inner wall of the interface and the rod body, and the sealing piece can simultaneously realize axial and radial sealing between the rod body and the interface, so that the connection between the valve assembly and the machine body piece has higher sealing reliability, and the medium leakage is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of a valve assembly according to an embodiment of the present invention;
FIG. 2 is a schematic view of a valve assembly and a body member according to an embodiment of the present invention;
fig. 3 is a partially enlarged view of a portion a in fig. 2.
Description of reference numerals:
1-a valve; 11-a valve body; 111-a first external thread section; 112-a second external thread section; 12-a handle; 2-mounting means; 21-a pressing piece; 211-a locking nut; 212-flat washer; 22-a seal; 3-a body member; 31-internal thread; 32-unthreaded hole section.
Detailed Description
When the valve is mounted on the body member, for example, when the drain valve is mounted on an engine, the valve is generally mounted on the body member by providing a threaded hole on the body member, then providing an external thread on the valve, and then screwing the external thread and the threaded hole. Of course, it is also possible to provide the threaded bore on the valve and the external thread on the body part.
In order to avoid the medium to reveal from the junction of screw hole and external screw thread, there are two kinds of sealed modes generally, one is that screw hole and external screw thread all adopt sealed pipe thread, but this kind of mode one comes angle and the required precision of cooperation conical surface between screw hole and external screw thread very high, can bring the increase of processing cost, two come to adopt the gummed mode to seal between the conical surface, after the long time use, can wear and tear and extrude sealed glue, sealed glue can appear and realize and the problem of leaking that leads to.
The other is that the threaded hole and the external thread are straight threads, then the sealing between the threaded hole and the external thread is realized through a sealing washer and a locking nut, specifically, the locking nut is arranged on a section of the external thread which is not screwed into the threaded hole, meanwhile, the sealing washer is sleeved on the external thread, and the locking nut presses and fixes the sealing washer between the threaded hole and the external thread through the rotation of the locking nut.
In view of the above problems, the present embodiment provides a valve assembly, which divides the external thread into two segments arranged at intervals along the axial direction, and sets the sealing washer to be located between the two segments of threads, and after the sealing element is pressed into the threaded hole, the smooth surface between the sealing element and the two segments of external threads is abutted tightly, so that the medium can be prevented from flowing out from the matching surface of the threads, that is, the connection between the valve assembly of the present embodiment and the machine body element has higher sealing reliability, and the problem of medium leakage is avoided.
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the utility model. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 3, the present embodiment provides a valve assembly, which includes a valve 1 and a mounting device 2, wherein the mounting device 2 is used for connecting the valve 1 with a body member 3, and one of the valve 1 and the body member 3 is provided with a port, and the other of the valve 1 and the body member 3 is provided with a rod body capable of being inserted and fixed in the port;
the inner wall of the connector is provided with internal threads 31, the periphery of the rod body is provided with a first external thread section 111 and a second external thread section 112, the first external thread section 111 and the second external thread section 112 are arranged at intervals along the axial direction of the rod body, and the second external thread section 112 is in threaded connection with the internal threads 31;
the mounting device 2 comprises a sealing member 22 and a pressing member 21, the sealing member 22 is sleeved on the rod body and is located between the first external thread section 111 and the second external thread section 112, the pressing member 21 is screwed with the first external thread section 111 and presses the sealing member 22, and the sealing member 22 abuts against and is located between the rod body and the connector.
The valve assembly of the embodiment realizes the installation of the valve 1 on the body member 3 by the screw connection between the second external thread section 112 and the internal thread 31, and presses the sealing member 22 between the first external thread section 111 and the second external thread section 112 between the interface and the rod body by the pressing member 21 by connecting the pressing member 21 with the first external thread section 111 in a screw way, so as to avoid the contact between the sealing member 22 and the thread on the rod body, thereby having better sealing reliability.
In this embodiment, the valve 1 may be a water drain valve for being mounted on an engine, the machine body component 3 may be an engine, the valve 1 may be a water drain valve for draining water from the engine, or a water drain valve for taking water from the engine, and the opening and closing of the valve 1 and the control of the medium flow rate are realized by opening and closing the handle 12, wherein the water drain from the engine is realized by using the water drain valve to drain redundant coolant in the machine body, and the water taking from the engine is realized by using the water drain valve to take out the coolant in the water outlet pipe to participate in warm air circulation, and is widely used in vehicles and agricultural machinery. The water discharge valve can be opened or closed by a nut fit mode, a conical surface fit mode or a ball valve fit mode.
In some embodiments, the valve 1 may also be a valve installed on a pipeline or other kinds of body components by a threaded connection, which has the same principle as the valve assembly of this embodiment, and will not be described in detail in this embodiment.
The interface of the present embodiment is configured on the engine; referring to fig. 1 to 3, the second external thread 112 of the present embodiment is formed on the outer circumference of the valve body 11 of the discharge valve and is located at one end of the valve body 11, that is, the valve body 11 forms the rod body; the first external thread section 111 is configured on the outer periphery of the valve body 11, and the first external thread section 111 and the second external thread section 112 are arranged at intervals along the axial direction of the valve body 11, so that a smooth surface is formed between the second external thread section 112 and the first external thread section 111; the distance between the first external thread section 111 and the second external thread section 112 is slightly larger than the thickness of the sealing member 22, and after the pressing member 21 presses the sealing member 22 between the valve body and the interface, the sealing member 22 abuts against the valve body 11 with a smooth surface between the first external thread section 111 and the second external thread section 112.
By arranging the first external thread section 111 and the second external thread section 112 at intervals, a smooth surface exists between the first external thread section 111 and the second external thread section 112, the sealing member 22 and the smooth surface of the rod body are abutted tightly, and compared with the mode that the sealing member 22 is in contact with the thread on the rod body, the scheme of the embodiment can prevent a medium from flowing out from between the sealing member 22 and the valve body 11.
In some embodiments, the second external thread segment 112 and the first external thread segment 111 can also be disposed on the body member 3, and the interface is correspondingly disposed on the valve 1, which has the same principle as the solution of the present embodiment, and will not be described again in the present embodiment.
In this embodiment, referring to fig. 2 and 3, a unthreaded hole section 32 is provided at a position where the interface is not covered by the internal thread 31, and the unthreaded hole section 32 is provided near an end of the interface, and the sealing member 22 is abutted between a hole wall of the unthreaded hole section 32 and the valve body 11.
By arranging the unthreaded hole section 32, the sealing element 22 is tightly abutted against the inner wall of the unthreaded hole section 32, so that the sealing element 22 is prevented from being in contact with threads on the interface, and the medium can be better prevented from flowing out from between the sealing element 22 and the interface.
Referring to fig. 2 and 3, in the present embodiment, the light hole section 32 includes a tapered hole, and the tapered hole is arranged in a manner that: the tapered bore is formed to have a gradually larger cross section in a direction away from the internal thread 31, and specifically, a small diameter end of the tapered bore is formed to be close to the internal thread 31 and a large diameter end of the tapered bore is formed to be located on the surface of the engine.
In some embodiments, the unthreaded hole section 32 may also include a straight hole, an inner diameter of the straight hole is larger than a bottom diameter of the internal thread 31, and the pressing member 21 can press the sealing member 22 on a step between the straight hole and the internal thread 31, and make the sealing member 22 abut between a hole wall of the straight hole and the rod body. However, compared with the straight hole solution, when the unthreaded hole section 32 is a tapered hole, the sealing member 22 will deform more sufficiently, so that a better sealing effect is achieved between the valve body and the interface.
Referring to fig. 1 to 3, the sealing member 22 of the present embodiment includes an O-ring, and when the O-ring is pressed into the space between the unthreaded hole section 32 and the valve body 11 by the pressing member 21, the O-ring will gradually expand towards two sides due to the gradual reduction of the cross section of the unthreaded hole section 32, so that two sides of the O-ring can respectively abut against the inner wall of the unthreaded hole section 32 and the outer periphery of the valve body, thereby achieving the sealing between the valve body and the interface.
In some embodiments, the sealing member 22 may also be a sealing ring with other cross-section, and only needs to be able to be deformed by pressure and abut against the inner wall of the joint and the outer circumference of the rod body.
Referring to fig. 1 to 3, the pressing member 21 of the present embodiment includes a lock nut 211, and the lock nut 211 is threadedly coupled to the first male screw section 111; the lock nut 211 is also displaced in the axial direction of the first external thread section 111 when rotated, and the lock nut 211 can push the sealing member 22 by being rotated.
In some embodiments, the pressing member 21 may not adopt the lock nut 211, but use a pressing sleeve, and one structure of the pressing sleeve is: the inner thread 31 is cylindrical, penetrates through the compression sleeve along the axial direction of the compression sleeve and is provided with a central hole, and the inner wall of the central hole is provided with an inner thread 31 which can be in threaded connection with the first outer thread section 111; and the end surface of the pressing sleeve facing the sealing member 22 is a plane so as to be capable of pressing the sealing member 22. That is, the pressing member 21 may be screwed to the first male screw section 111 to press the sealing member 22. The use of the retaining nut 211 enables the valve assembly to be of lower material cost than other forms of hold down.
In some embodiments, referring to fig. 1 to 3, the pressing member 21 further includes a flat washer 212 disposed on the valve body 11, and the flat washer 212 is disposed between the lock nut 211 and the sealing member 22 to transmit the pressing force of the lock nut 211 to the sealing member 22.
By providing the flat washer 212, the lock nut 211 can be prevented from directly acting on the sealing member 22 when rotating, and the sealing member 22 can be prevented from being damaged or destroyed by torsional deformation.
Referring to fig. 1 to 3, in the present embodiment, the second external thread section 112 is a straight thread, and the internal thread 31 is also a straight thread corresponding to the second external thread section 112.
The second external thread section 112 and the internal thread 31 are straight threads, so that the handle 12 of the water drain valve can be positioned at any position in the circumferential direction. Specifically, the second external thread section 112 and the internal thread 31 are matched by a straight thread, so that the handle 12 of the discharge valve can be rotated and fixed at any circumferential position, for example, the handle 12 can face towards the right upper side, the lowest side or any other direction, thereby better meeting the use requirements of users.
In some embodiments, a taper-pipe thread fit may be used between the second external thread segments 112 and the internal threads 31, but in this manner, the orientation of the discharge valve handle 12 will be less controllable.
In summary, the valve assembly of the present embodiment is configured such that the first external thread section 111 and the second external thread section 112 are disposed on the outer circumference of the rod body, the first external thread section 111 and the second external thread section 112 are disposed at an interval, and the sealing member 22 is disposed between the first external thread section 111 and the second external thread section 112; meanwhile, the pressing piece 21 applies pressure to the sealing piece 22, the sealing piece 22 is abutted between the inner wall of the interface and the rod body, and the sealing piece 22 can simultaneously realize axial and radial sealing between the rod body and the interface, so that the valve assembly is connected with the machine body piece 3, the sealing reliability is high, and medium leakage is avoided.
The embodiment also provides an engine assembly which comprises the engine and the valve assembly, and the valve assembly is installed on the engine.
The engine assembly of the embodiment is provided with the valve assembly, and the higher sealing reliability is realized between the valve assembly and the engine, so that the abnormal temperature of the engine caused by the accidental leakage of a medium in the engine can be avoided.
In the description of the embodiments of the present invention, it should be understood that the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, an indirect connection through intervening media, a connection between two elements, or an interaction between two elements, unless expressly stated or limited otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A valve assembly, characterized by: the valve comprises a valve and a mounting device, wherein the mounting device is used for connecting the valve with a machine body part, one of the valve and the machine body part is provided with a connector, and the other of the valve and the machine body part is provided with a rod body which can be inserted and fixed in the connector;
an internal thread is arranged on the inner wall of the connector, a first external thread section and a second external thread section are arranged on the periphery of the rod body, the first external thread section and the second external thread section are arranged at intervals along the axial direction of the rod body, and the second external thread section is in threaded connection with the internal thread;
the mounting device comprises a sealing element and a pressing element, the sealing element is sleeved on the rod body and is located between the first external thread section and the second external thread section, the pressing element is in threaded connection with the first external thread section and presses the sealing element, and the sealing element is abutted against the rod body and the interface.
2. The valve assembly of claim 1, wherein: the connector is provided with a unthreaded hole section at a position which is not covered by the internal thread, the unthreaded hole section is arranged close to the end part of the connector, and the sealing element is tightly propped between the hole wall of the unthreaded hole section and the rod body.
3. The valve assembly of claim 2, wherein: the unthreaded hole section comprises a tapered hole, and the section of the tapered hole is gradually enlarged in the direction away from the internal thread.
4. A valve assembly according to any one of claims 1 to 3, wherein: the compressing piece comprises a locking nut, and the locking nut is in threaded connection with the first external thread section.
5. The valve assembly of claim 4, wherein: the pressing piece comprises a flat washer, the flat washer is sleeved on the rod body and located between the locking nut and the sealing piece, and pressure of the locking nut is transmitted to the sealing piece.
6. A valve assembly according to any one of claims 1 to 3, wherein: the second external thread section adopts straight threads.
7. A valve assembly according to any one of claims 1 to 3, wherein: the seal comprises an O-ring seal.
8. A valve assembly according to any one of claims 1 to 3, wherein: the valve is a water drain valve arranged on the machine body piece.
9. The valve assembly of claim 8, wherein: the interface is constructed on the machine body part, and the rod body is composed of a valve body of the water drain valve.
10. An engine assembly, characterized in that: comprising an engine and a valve assembly as claimed in any one of claims 1 to 9 mounted on the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121158039.8U CN215928454U (en) | 2021-05-27 | 2021-05-27 | Valve assembly and engine assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121158039.8U CN215928454U (en) | 2021-05-27 | 2021-05-27 | Valve assembly and engine assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215928454U true CN215928454U (en) | 2022-03-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121158039.8U Active CN215928454U (en) | 2021-05-27 | 2021-05-27 | Valve assembly and engine assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215928454U (en) |
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2021
- 2021-05-27 CN CN202121158039.8U patent/CN215928454U/en active Active
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