CN114198505A - Stop valve - Google Patents

Abstract

The present invention provides a shut-off valve, comprising: the valve body is provided with a first flow passage and a second flow passage; the valve core is provided with an operating end and a plugging end, the valve core is movably arranged in the valve body so as to adjust the communication condition of the first flow channel and the second flow channel by utilizing the plugging end of the valve core, and the plugging end of the valve core is provided with a turbulent flow part. Through the technical scheme that this application provided, can solve the too big problem of noise of stop valve among the prior art.

Description

Stop valve

Technical Field

The invention relates to the technical field of air conditioners, in particular to a stop valve.

Background

At present, a valve core is arranged in a valve body of the stop valve, and the stop state of the stop valve can be controlled by adjusting the position of the valve core in the valve body. The bottom of the valve core is arranged corresponding to the valve port of the stop valve, and the stop state of the stop valve can be controlled by adjusting the distance between the bottom of the valve core and the valve port.

In the prior art, the bottom of case is planar structure, and when fluid flowed to valve port department, fluid can directly assault the bottom at the case to produce great noise, influence user's use and experience. Therefore, the prior art has the problem that the noise of the stop valve is too large.

Disclosure of Invention

The invention provides a stop valve, which aims to solve the problem of overlarge noise of the stop valve in the prior art.

The invention provides a stop valve, which comprises: the valve body is provided with a first flow passage and a second flow passage; the valve core is provided with an operating end and a plugging end, the valve core is movably arranged in the valve body so as to adjust the communication condition of the first flow channel and the second flow channel by utilizing the plugging end of the valve core, and the plugging end of the valve core is provided with a turbulent flow part.

By applying the technical scheme of the invention, the stop valve comprises a valve body and a valve core, wherein the valve body is provided with a first flow passage and a second flow passage, the end parts of the first flow passage and the second flow passage are respectively provided with an inlet and an outlet of the stop valve, and the joint of the first flow passage and the second flow passage is a valve port of the stop valve. The valve core is driven by the operation end of the valve core to move in the valve body, so that the distance between the plugging end of the valve core and the valve port is adjusted, and the communication condition of the first flow channel and the second flow channel can be adjusted by the plugging end of the valve core. Set up vortex portion through the shutoff end at the case, when the fluid flows valve port department, vortex portion can carry out the vortex to the fluid to can avoid fluidic direct impact, and then can reduce or even eliminate the noise, promote user's use and experience.

Furthermore, the end wall of the plugging end of the valve core is of a convex structure or a concave structure so as to form a turbulent flow part. When fluid flows to the valve port, the convex structure or the concave structure can change the flow direction of the fluid, and the fluid is prevented from directly impacting the valve core, so that the turbulent flow effect is realized.

Furthermore, the convex structure is provided with a first end and a second end which are oppositely arranged, the first end of the convex structure is connected with the blocking end of the valve core, and the size of the first end of the convex structure is equal to that of the blocking end of the valve core. Adopt above-mentioned structure for the whole diapire of the shutoff end of case is evagination structure, and the whole diapire of the shutoff end of case all can play the effect of vortex, therefore evagination structure can play the biggest vortex effect.

Further, the outer wall of the convex structure is conical. When fluid flows to valve port department, because the toper outer wall slope setting of evagination structure, the toper outer wall of evagination structure can guide the flow direction of fluid to can avoid fluidic direct impact, and then can reduce or even eliminate the noise.

Furthermore, in the direction that the operation end of the valve core points to the plugging end, the size of the cross section of the convex structure is gradually reduced, so that the convex structure can be ensured to have a good turbulent flow effect.

Furthermore, a step structure is arranged on the outer wall of the convex structure. Through setting up the stair structure, compare in the whole structure that is the unchangeable structure of tapering of evagination structure, adopt the stair structure to be convenient for adjust the length dimension and the radial dimension of evagination structure for the applicable scene of case is more nimble.

Furthermore, the convex structure comprises a first section and a second section which are connected with each other, one end of the first section is connected with the outer wall of the valve core, and the taper of the first section is smaller than or larger than that of the second section to form a step structure. The mode of changing the taper of the convex structure to form the step structure is adopted, and the convex structure has the advantages of simple structure and convenience in processing.

Further, the end face of the second section far away from the first section is a plane. When the valve core is machined, the machining equipment can clamp and fix the valve core through the plane, the valve core is convenient to machine, and the machining efficiency of the valve core can be improved.

Furthermore, the outer wall of the convex structure is a cambered surface. When fluid flows to valve port department, because the outer wall of evagination structure is the cambered surface, utilize this cambered surface can guide the flow direction of fluid to can avoid fluidic direct impact, and then can reduce or even eliminate the noise.

Further, the inner concave structure comprises an inner groove, and the groove bottom of the inner groove is arranged towards the operation end of the valve core. When fluid flows to valve port department, because the tank bottom of inner groovy sets up towards the operation end of case, the inner groovy can guide the flow direction of fluid to can avoid fluidic direct impact, and then can reduce or even eliminate the noise.

Furthermore, the groove wall of the inner groove is an arc surface, so that the turbulent flow effect can be improved.

Furthermore, the spoiler is of a rotary structure. Utilize the gyration structure can guarantee the even contact of fluid and vortex portion to guarantee that vortex portion plays good vortex effect.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram illustrating a shut-off valve according to an embodiment of the present invention;

FIG. 2 shows a schematic of the valve cartridge of FIG. 1;

FIG. 3 is a schematic structural diagram of a valve core of a stop valve provided by the second embodiment of the invention;

FIG. 4 is a schematic structural diagram of a valve core of a stop valve provided according to the third embodiment of the invention;

FIG. 5 is a schematic structural diagram of a valve core of a stop valve provided according to the fourth embodiment of the invention;

FIG. 6 shows a schematic structural diagram of a valve core of a stop valve provided according to the fifth embodiment of the invention;

FIG. 7 shows a schematic structural diagram of a valve core of a stop valve according to a sixth embodiment of the invention;

FIG. 8 is a schematic structural diagram illustrating a spoiler and a spool of the stop valve according to an embodiment of the invention in a split structure;

FIG. 9 is a sectional view of a spoiler and a spool of a shutoff valve according to an embodiment of the present invention;

fig. 10 shows an explosion diagram of a shutoff valve provided according to an embodiment of the present invention, in which a spoiler and a spool are separate structures.

Wherein the figures include the following reference numerals:

10. a valve body; 11. a first flow passage; 12. a second flow passage; 20. a valve core; 21. an operation end; 22. plugging the end; 30. a spoiler portion; 31. a convex structure; 311. a first stage; 312. a second stage; 32. a concave structure; 321. an inner groove; 33. and (3) a step structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.

As shown in fig. 1, a shutoff valve according to a first embodiment of the present invention includes a valve body 10 and a valve core 20, and the valve core 20 is movably disposed in the valve body 10. The valve body 10 has a first flow passage 11 and a second flow passage 12, two ends of the first flow passage 11 and the second flow passage 12 are respectively an inlet and an outlet of the stop valve, and a joint of the first flow passage 11 and the second flow passage 12 is a valve port of the stop valve. Specifically, the valve element 20 has an operation end 21 and a blocking end 22, the blocking end 22 of the valve element 20 is disposed corresponding to a valve port of the shutoff valve, and a user can operate the valve element 20 through the operation end 21 of the valve element 20 to move the valve element 20 in the valve body 10, so as to adjust the communication between the first flow channel 11 and the second flow channel 12 by using the blocking end 22 of the valve element 20, thereby controlling the shutoff state of the shutoff valve. In the present embodiment, the blocking end 22 of the valve core 20 is provided with a turbulent flow portion 30, and the turbulent flow portion 30 can be used to disturb the fluid entering the valve body 10.

Use the stop valve that this embodiment provided, when fluid flows to valve port department, the fluid forms the production noise such as vortex easily, because the shutoff end 22 of case 20 is provided with vortex portion 30, utilizes vortex portion 30 can carry out the vortex to the fluid to can avoid the production of fluid vortex, and then can reduce or even eliminate the noise, promote user's use and experience. In addition, since the fluid does not directly impact the valve element 20, the erosion of the fluid to the valve element 20 can be reduced, and the service life of the stop valve can be prolonged.

Wherein, vortex portion 30 includes but not limited to structures such as toper boss, arc recess, arc boss, as long as can utilize vortex portion 30 to carry out the vortex. Specifically, the end wall of the blocking end 22 of the valve core 20 is a convex structure 31 or a concave structure 32, and the convex structure 31 or the concave structure 32 forms the spoiler 30. When fluid flows to the valve port, the convex structure 31 or the concave structure 32 can change the flow direction of the fluid, avoid the generation of vortex, and avoid the fluid from directly impacting the valve core 20 to play a role of turbulent flow.

As shown in fig. 2, in the present embodiment, the outer convex structure 31 has a first end and a second end which are oppositely arranged, the first end of the outer convex structure 31 is connected with the blocking end 22 of the valve core 20, and the first end of the outer convex structure 31 has the same size as the blocking end 22 of the valve core 20. By adopting the structure, the whole bottom wall of the plugging end 22 of the valve core 20 is the convex structure 31, and the whole bottom wall of the plugging end 22 of the valve core 20 can play a role of turbulent flow, so that the convex structure 31 can play the maximum turbulent flow effect. In this embodiment, the taper angle formed by the convex structure 31 is set at a right angle or an acute angle.

Moreover, a fillet can be arranged between the first end of the convex structure 31 and the outer wall of the plugging end 22 of the valve core 20, and the fillet can play a role in disturbing flow, so that the disturbing flow effect can be further improved. In particular, the first end of the outer convex structure 31 is the upper end of the outer convex structure 31, and the second end of the outer convex structure 31 is the lower end of the outer convex structure 31.

In other embodiments, the size of the first end of the outer protrusion 31 may be smaller than the size of the blocking end 22 of the valve spool 20, as long as the outer protrusion 31 can be used for turbulent flow.

As shown in fig. 2, in the present embodiment, the outer wall of the protruding structure 31 is tapered, and when fluid flows to the valve port, because the tapered outer wall of the protruding structure 31 is disposed obliquely, the tapered outer wall of the protruding structure 31 guides the flow direction of the fluid, so as to avoid direct impact of the fluid, and further reduce or even eliminate noise.

Wherein, the taper of the outer wall of the convex structure 31 can be adjusted according to actual conditions as long as the fluid can play a role in disturbing flow.

The turbulence portion 30 may be a cone or a pyramid. In the case that the spoiler 30 is a pyramid, the valve element 20 may be axially movable in the valve body 10, and the valve port may be shaped like a prism, so that the outer wall of the pyramid is in sealing contact with the valve port.

In this embodiment, the spoiler portion 30 is a rotary structure, and the rotary structure can ensure uniform contact between the fluid and the spoiler portion 30, so as to ensure that the spoiler portion 30 has a good spoiler effect.

Specifically, in the direction in which the operation end 21 of the valve core 20 points to the blocking end 22, the cross-sectional size of the protruding structure 31 is gradually reduced, so that the protruding structure 31 can be ensured to have a good turbulent flow effect. In the present embodiment, the spoiler 30 has a conical structure.

As shown in fig. 3, a second embodiment of the present invention provides a stop valve, and the second embodiment is different from the first embodiment in that a step structure 33 is provided on the outer wall of the convex structure 31 in the second embodiment. Through setting up stair structure 33, compare in that protruding structure 31 is whole for the unchangeable structure of tapering, adopt stair structure 33 to be convenient for adjust the length dimension and the radial dimension of protruding structure 31 for the applicable scene of case 20 is more nimble. The step structure can also be arranged into a plurality of steps, namely, a plurality of sections of conical surfaces with different tapers are formed, and the tapers of the conical surfaces are sequentially increased or sequentially reduced.

Wherein, the male structure 31 includes a first section 311 and a second section 312 connected to each other, one end of the first section 311 is connected to the outer wall of the valve core 20, and the taper of the first section 311 is smaller or larger than that of the second section 312 to form the step structure 33. The mode of changing the taper of the convex structure 31 to form the step structure 33 has the advantages of simple structure and convenient processing.

In the present embodiment, the taper of the first section 311 is smaller than the taper of the second section 312 to form the stepped structure 33. As shown in fig. 4, a third embodiment of the present invention provides a stop valve, and the third embodiment is different from the second embodiment in that in the third embodiment, the taper of the first section 311 is greater than that of the second section 312 to form a step structure 33.

Under the condition that the taper of the first section 311 is the same, the taper of the first section 311 is larger than the taper of the second section 312 to form the stepped structure 33, compared with the structure that the taper of the first section 311 is smaller than or equal to the taper of the second section 312, the total length of the first section 311 and the second section 312 can be reduced, in other words, the length of the convex structure 31 can be reduced, the length of the valve core 20 can be further reduced, and the stop valve is convenient to achieve miniaturization.

The fourth embodiment of the present invention provides a stop valve, and the difference between the fourth embodiment and the second embodiment is that in the fourth embodiment, an end surface of the second section 312, which is far away from the first section 311, is a plane. In this embodiment, the included angle formed by the convex structure 31 is set to be a right angle or an acute angle.

When the valve core 20 is machined, the machining equipment can clamp and fix the valve core 20 through the plane, so that the valve core 20 can be machined conveniently, and the machining efficiency of the valve core 20 can be improved.

As shown in fig. 5, another structure of the fourth embodiment is that a flat surface may be directly provided on the bottom of the cone without providing the step structure 33.

As shown in fig. 6, a fifth embodiment of the present invention provides a stop valve, and the difference between the fifth embodiment and the first embodiment is that in the fifth embodiment, the outer wall of the convex structure 31 is a cambered surface.

When fluid flows to the valve port, the outer wall of the convex structure 31 is an arc surface, and the flow direction of the fluid is guided by the arc surface, so that direct impact of the fluid can be avoided, and noise can be reduced or even eliminated.

In addition, the outer wall of the convex structure 31 is set to be a cambered surface, compared with the mode that the convex structure 31 is set to be a cone, the length of the convex structure 31 can be reduced, the length of the valve core 20 can be further reduced, and the stop valve is convenient to miniaturize.

As shown in fig. 7, a sixth embodiment of the present invention provides a stop valve, which is different from the first embodiment in that in the sixth embodiment, the concave structure 32 includes an inner groove 321, and a groove bottom of the inner groove 321 is disposed toward the operating end 21 of the spool 20.

When fluid flows to the valve port, the groove bottom of the inner groove 321 is arranged towards the operation end 21 of the valve core 20, and the inner groove 321 guides the flow direction of the fluid, so that direct impact of the fluid can be avoided, and noise can be reduced or even eliminated.

Specifically, the groove wall of the inner groove 321 is an arc surface, so that the turbulent flow effect can be improved.

In the present embodiment, the entire bottom wall of the closed end 22 of the valve element 20 is an inner groove 321. In the conventional art, a small groove is provided at the center of the closed end 22 of the partial valve body 20, but the small groove is used for fixing the valve body 20 during the turning of the vehicle, and when the fluid passes through the small groove, a vortex is generated, which increases the noise.

In the above embodiment, the turbulent flow portion and the valve core are integrally disposed, and the turbulent flow portion and the valve core may be disposed in a split structure and fixedly connected to each other. Wherein, the shape and size of the spoiler can be any one of the above embodiments.

As shown in fig. 8 to 10, an installation groove may be provided on the bottom surface of the valve core 20, an installation boss may be provided on the upper end of the spoiler 30, and the installation boss may be inserted into the installation groove. The mounting convex part and the mounting groove can be connected in the modes of interference fit, welding, bonding and the like. In this embodiment, the installation convex portion is inserted into the installation groove through the interference fit mode, and then is fixed on the valve core 20 by using the welding mode, so that the coaxiality of the turbulent flow portion 30 and the valve core 20 can be ensured. And, after the spoiler 30 is assembled to the valve core 20, the outer sidewall of the spoiler 30 is flush with the outer sidewall of the valve core 20.

Wherein, still be provided with the throttle subassembly in the stop valve, utilize the throttle subassembly to throttle to the fluid, set up the throttle subassembly in valve body 10, need not additionally to set up the choke valve again, can promote the integrated level of stop valve.

By applying the stop valve provided by the embodiment, the turbulent flow portion 30 is arranged at the plugging end 22 of the valve core 20, so that the smoothness of the flow channel can be increased, the flow channel resistance of the fluid when the fluid turns through the valve port can be effectively reduced, and the fluid noise can be reduced.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A shut-off valve, comprising:

a valve body (10), the valve body (10) having a first flow passage (11) and a second flow passage (12);

the valve core (20) is provided with an operating end (21) and a blocking end (22), the valve core (20) is movably arranged in the valve body (10) so as to adjust the communication condition of the first flow passage (11) and the second flow passage (12) by using the blocking end (22) of the valve core (20), and the blocking end (22) of the valve core (20) is provided with a turbulent flow part (30).

2. A stop valve according to claim 1, wherein the end wall of the blocking end (22) of the spool (20) is of convex configuration (31) or concave configuration (32) to form the spoiler (30).

3. A stop valve according to claim 2, wherein the male formation (31) has first and second oppositely disposed ends, the first end of the male formation (31) being connected to the closed end (22) of the spool (20), the first end of the male formation (31) being of a size equal to the closed end (22) of the spool (20).

4. A stop valve according to claim 2, wherein the outer wall of the protruding structure (31) is tapered.

5. A stop valve according to claim 4, wherein the cross-sectional dimension of the male formation (31) decreases in a direction in which the operating end (21) of the valve cartridge (20) points towards the blocking end (22).

6. A stop valve according to claim 4, wherein the outer wall of the male formation (31) is provided with a step formation (33).

7. A stop valve according to claim 6, wherein the male formation (31) comprises a first section (311) and a second section (312) connected to each other, one end of the first section (311) being connected to the outer wall of the spool (20), the taper of the first section (311) being less or greater than the taper of the second section (312) to form the step formation (33).

8. A stop valve according to claim 7, wherein the end face of the second section (312) remote from the first section (311) is planar.

9. A stop valve according to claim 2, wherein the outer wall of the convex structure (31) is a cambered surface.

10. A stop valve according to claim 2, wherein the female formation (32) comprises an internal groove (321), the groove base of the internal groove (321) being disposed towards the operating end (21) of the spool (20).

11. The shut-off valve according to claim 10, characterized in that the groove wall of the inner groove (321) is a cambered surface.

12. A stop valve according to any one of claims 1 to 11, wherein the spoiler (30) is of a swivel construction.

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