Valve

Abstract

The invention aims at providing a valve which comprises a valve body assembly, a valve element assembly and a driving assembly, a sealing cavity in the valve body assembly is gradually expanded in the positive direction of the first direction, the valve element assembly is arranged in the sealing cavity, the peripheral contour of the valve element assembly is gradually expanded in the positive direction of the first direction, and the driving assembly is arranged on the top wall. And the valve core assembly is in transmission connection. The peripheral contour of the valve element assembly and the contour of the sealing cavity are conformal, so that the peripheral wall face of the valve element assembly can be attached to the wall forming the sealing cavity at the first position, and when the driving assembly acts, the valve element assembly can be driven to move to the second position in the positive direction of the first direction. The valve element assembly can be driven by the driving assembly to rotate at the second position. The valve has the advantages of being good in sealing effect and high in actuation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of valve structure design, in particular to a valve. Background Art

[0002] With the continuous development of the national economy, all industries in China are developing rapidly. In the single crystal furnace industrial equipment, there is a great demand for valves with large diameter, strong blowdown, high working frequency and the ability to transport large gas flows.

[0003] Currently, large-diameter valve configurations often have the problem of low actuation efficiency. How to provide a valve structure with good sealing effect and fast actuation is an issue that urgently needs to be solved. Summary of the Invention

[0004] The object of the present invention is to provide a valve which has the characteristics of good sealing effect and high actuation efficiency.

[0005] To achieve the above-mentioned purpose, the valve comprises:

[0006] A valve body assembly, comprising a top wall, a bottom wall, and a side wall, wherein the top wall, the bottom wall, and the side wall enclose a sealed cavity inside the valve body assembly, the sealed cavity is gradually expanded along the positive direction of the first direction, and at least two first through holes are formed in the side wall;

[0007] a valve core assembly disposed in the sealed cavity, wherein the outer periphery of the valve core assembly is gradually expanded along the positive direction of the first direction, at least one flow channel is arranged in the valve core assembly, and at least one flow channel forms at least two second through holes in the outer periphery of the valve core assembly; and

[0008] A driving assembly, disposed on the top wall and in transmission connection with the valve core assembly;

[0009] The outer peripheral contour of the valve core assembly conforms to the contour of the sealing cavity, so that the outer peripheral wall surface of the valve core assembly can be in contact with the wall of the sealing cavity in a first position, and the driving assembly can drive the valve core assembly to move in the positive direction of the first direction to a second position when actuated, and the valve core assembly can be driven to rotate by the driving assembly in the second position;

[0010] A sealing ring is arranged on the periphery of the first through hole or the periphery of the second through hole. By adjusting the posture of the valve core assembly in the valve body assembly, the first through hole can be aligned with the second through hole at the first position or the sealing ring can be aligned with the first through hole. The sealing ring seals between the relatively aligned first through hole and the second through hole or between the first through hole and the valve core assembly.

[0011] In one or more embodiments, the positive direction of the first direction is the direction from the bottom wall toward the top wall.

[0012] In one or more embodiments, the inner wall surface of the side wall is inclined outward from the bottom wall to the top wall, so that the sealed cavity is gradually expanded along the positive direction of the first direction.

[0013] In one or more embodiments, there are four side walls, wherein the first through holes are respectively opened in two opposite side walls, and a straight flow channel is opened in the valve core assembly to form two second through holes in the outer peripheral contour of the valve core assembly.

[0014] In one or more embodiments, the side wall is detachably connected to the top wall and the bottom wall, respectively, and a sealing ring is provided between the side wall and the top wall and between the side wall and the bottom wall, respectively.

[0015] In one or more embodiments, the drive assembly includes a linear cylinder and a rotary cylinder.

[0016] In one or more embodiments, a relief hole is opened in the top wall, and the cylinder shaft in the linear cylinder passes through the rotary cylinder and the relief hole and is fixedly connected to the valve core assembly.

[0017] In one or more embodiments, a seal is provided between the cylinder shaft and the wall of the avoidance hole.

[0018] In one or more embodiments, the valve is a plunger valve.

[0019] In one or more embodiments, the valve is a vacuum valve.

[0020] The beneficial effects of the present invention are:

[0021] In this valve, by configuring the internal sealing cavity of the valve body assembly and the valve core assembly as a whole to be outward-expanded, the resistance encountered during the adjustment process of opening or closing the valve state is reduced, so that a large-diameter valve structure can be adopted. At the same time, the valve core assembly and the sealing ring are used to simultaneously realize the sealing function, so that the valve can have good sealing performance and is suitable for environments with strict sealing adjustment requirements, such as vacuum environments.

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0024] Figure 1 Shows a half-section schematic diagram according to some embodiments of the valve;

[0025] Figure 2 shows an exploded schematic diagram of some embodiments of the valve;

[0026] Figure 3 shows a half-section schematic diagram according to some embodiments of the valve body assembly;

[0027] Figure 4 A half-section schematic diagram of some embodiments of the valve core assembly is shown;

[0028] Figure 5 shows a half-section schematic diagram according to some embodiments of the top wall;

[0029] Figure 6 A half-section schematic diagram of some embodiments of the drive assembly is shown. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0032] According to some embodiments of the present application, a valve is provided, which has the characteristics of good sealing effect and high actuation efficiency. Figure 1 shows a half-section schematic diagram of some embodiments of the valve, Figure 2 The figure shows an exploded schematic diagram of some embodiments of the valve, which includes a valve body assembly 1, a valve core assembly 2, and a drive assembly 3. The valve body assembly 1 includes a top wall 11, a bottom wall 12, and a side wall 13, which enclose a sealed cavity 10 within the valve body assembly 1.

[0033] Figure 3 shows a half-section schematic diagram according to some embodiments of the valve body assembly, Figure 4 shows a half-section schematic diagram of some embodiments of the valve core assembly, Figure 5 shows a half-section schematic diagram of some embodiments of the top wall, Figure 6 A half-section schematic diagram of some embodiments of the drive assembly is shown.

[0034] The sealed cavity 10 is gradually expanded along the positive direction a of the first direction. This means that among multiple cross-sections of the sealed cavity 10 along the positive direction a of the first direction, the cross-section located downstream of the positive direction a of the first direction expands outward as a whole relative to the cross-section located upstream. For example, if the cross-section is a circle, the radius of the circular cross-section located downstream of the positive direction a of the first direction is greater than the radius of the circular cross-section located upstream.

[0035] At least two first through holes 130 are defined in the side wall 13 , and the first through holes 130 allow fluid to pass through and enter the valve.

[0036] The valve core assembly 2 is disposed in the sealed cavity 10. The outer periphery of the valve core assembly 2 is gradually expanded along the positive direction a of the first direction. This means that among multiple cross-sections of the valve core assembly 2 along the positive direction a of the first direction, the cross-section located downstream of the positive direction a of the first direction is generally expanded outward relative to the cross-section located upstream. Taking a circular cross-section as an example, the radius of the circular cross-section located downstream of the positive direction a of the first direction is greater than the radius of the circular cross-section located upstream.

[0037] At least one flow channel is arranged in the valve core assembly 2, which allows fluid to pass through the valve core assembly 2. The at least one flow channel forms at least two second through holes 20 in the outer peripheral contour of the valve core assembly, namely the inlet for the fluid to enter the valve core assembly 2 and the outlet for the fluid to flow out of the valve core assembly 2.

[0038] The drive assembly 3 is arranged on the top wall 11 and is in transmission connection with the valve core assembly 2. It is understood that in the description herein, the orientation or position relationship indicated by the technical terms "top wall", "bottom wall", "side wall", etc. is based on the orientation or position relationship of the connection assembly in the connected state, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In the embodiments herein, the top wall 11 can be understood as the wall where the drive assembly 3 is located, which has nothing to do with the actual placement of the components, while the bottom wall 12 is the wall arranged opposite to the top wall 11. For example, in the embodiment shown in the figure, the top wall 11 is located at the upper part of the valve body assembly 1, while in some embodiments, the drive assembly 3 is arranged in the wall body located on the side of the valve body assembly 1, then the wall body located on the side is regarded as the top wall, and the wall body opposite thereto is called the bottom wall.

[0039] The outer contour of the valve core assembly 2 is conformal to the contour of the sealing cavity 10, so that the outer wall surface of the valve core assembly 2 can fit in with the wall constituting the sealing cavity 10 in the first position. Conformal means that the outer contour of the valve core assembly 2 matches the contour of the sealing cavity 10, and when the two are close, they can fit in with each other. When the drive assembly 3 is actuated, it can drive the valve core assembly 2 to move along the positive direction a of the first direction to the second position, and the valve core assembly 2 can be driven to rotate by the drive assembly 3 in the second position. It can be understood that the first position described in the text is the position where the valve core assembly 2 fits in with the wall constituting the sealing cavity 10, and at this time, the wall constituting the sealing cavity 10 restricts the rotation of the valve core assembly 2. The second position described herein is a position where the valve core assembly 2 is away from the wall constituting the sealing cavity 10. At this time, the valve core assembly 2 is separated from the wall constituting the sealing cavity 10 by a distance. At this time, since the outer contour of the valve core assembly 2 and the sealing cavity 10 as a whole are gradually expanded along the positive direction a of the first direction, the rotation of the valve core assembly 2 will not be restricted by the wall constituting the sealing cavity 10, thereby achieving the adjustment of the posture of the valve core assembly 2 by only moving the valve core assembly 2 a small distance along the positive direction a of the first direction to adjust the conduction or cutoff state of the valve. It can be understood that the conduction state of the valve refers to the connection of at least two first through holes 130, at least two second through holes 20 and at least one flow channel to allow fluid to pass through the valve, and the cutoff state of the valve refers to the flow channels in the valve core assembly 2 not being connected to the two first through holes 130 at the same time, so that fluid cannot pass through the valve.

[0040] Among them, a sealing ring 4 is arranged on the periphery of the first through hole 130 or the periphery of the second through hole 20. By adjusting the posture of the valve core assembly 2 in the valve body assembly 1, the first through hole 130 can be aligned with the second through hole 20 in the first position or the sealing ring 4 on the valve core assembly 2 can be aligned with the first through hole. The sealing ring 4 seals between the relatively aligned first through hole 130 and the second through hole 20 or the sealing ring 4 seals between the first through hole 130 and the valve core assembly 2.

[0041] The specific working adjustment process of this valve is as follows:

[0042] In the valve-on state, the valve core assembly 2 is in the first position, affixing to the valve body assembly 1. The first through-hole 130 and the second through-hole 20 are sealed by the sealing ring 4. The presence of the sealing ring 4 ensures that the valve core assembly 2 and the valve body assembly 1 do not necessarily fit perfectly in the physical sense, but rather approximately fit. That is, a certain gap exists between the valve core assembly 2 and the valve body assembly 1, and the seal between the valve core assembly 2 and the valve body assembly 1 is achieved by the sealing ring 4. In this state, when the valve needs to be adjusted to the closed state, the drive assembly 3 is actuated, causing the valve core assembly 2 to move along the positive direction a of the first direction to the second position. At this point, a gap exists between the sealing ring 4 and the valve core assembly 2 or the valve body assembly 1, and a gap also exists between the valve core assembly 2 and the valve body assembly 1. The actuation of the drive assembly 3 causes the valve core assembly 2 to rotate along its own axis by a certain angle, causing the first through-hole 130 to be offset from the second through-hole 20. Continued actuation of the drive assembly 3 causes the valve core assembly 2 to return to the first position along the negative direction of the first direction, completing the adjustment of the valve assembly from the closed state to the closed state. Similarly, the process of adjusting the valve from the cut-off state to the on state, or switching between different on states, is consistent with the above.

[0043] In this valve, by configuring the internal sealing cavity 10 of the valve body assembly 1 and the valve core assembly 2 as an outward expansion shape, the resistance encountered during the adjustment process of opening or closing the valve state is reduced, so that a large-diameter valve structure can be adopted. At the same time, the valve core assembly 2 and the sealing ring 4 are used to realize the sealing function at the same time, so that the valve can have good sealing performance and is suitable for environments with strict sealing adjustment requirements, such as vacuum environments.

[0044] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0045] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] In some embodiments of the valve, as shown in the figure, the positive direction a of the first direction is the direction from the bottom wall 12 toward the top wall 11 (i.e., the wall where the drive assembly 3 is located). In other embodiments with structures different from those shown in the figure, the positive direction a of the first direction may also be the direction from the top wall 11 toward the bottom wall 12.

[0047] In some embodiments of the present valve, as shown in the figure, the inner wall surface 131 of the side wall 13 is inclined outward from the bottom wall 12 to the top wall 11, so that the sealed cavity 10 gradually expands along the positive direction a of the first direction. In one embodiment, as shown in the figure, the extension direction of the inner wall surface 131 forms an angle x with the positive direction a of the first direction, and the extension direction of the outer wall surface 21 of the valve core assembly 2 also forms an angle x with the positive direction a of the first direction. As a result, the longitudinal cross-section of the outer contour of the sealed cavity 10 and the outer contour of the valve core assembly 2 are both trapezoidal in shape, with the upper portion being larger and the lower portion being smaller, and the two are conformal, with the long side of the trapezoid corresponding to the top wall 11. In this embodiment, because the sealed cavity 10 extends obliquely, debris such as dust can easily fall along the inclined wall surface, making it easier to collect. In other embodiments different from those shown in the figure, the inner wall surface of the side wall can also extend outward in an arc-shaped manner from the bottom wall to the top wall.

[0048] In a specific embodiment of the present valve, there are four side walls 13, wherein a first through hole 130 is respectively provided in the two oppositely disposed side walls 13, and a straight flow channel is provided in the valve core assembly 2 to form two second through holes 2 in the outer contour of the valve core assembly. When the two second through holes 2 are aligned with the first through holes 130, the valve is turned on. In the on state, the valve core assembly 2 rotates ninety degrees so that neither of the two second through holes 2 is aligned with the first through hole 130, at which point the valve is turned off. It is understandable that the form of the side walls 13 and the structural form of the valve core assembly 2 can vary greatly from the embodiment shown in the figure. For example, the side walls 13 can be circular side walls, polygonal side walls, etc., and correspondingly, the valve core assembly 2 can have a corresponding shape. At the same time, the number of first through holes 130 provided in the side walls can also be changed according to actual needs, so that the present valve can realize structures such as three-way and N-way.

[0049] In a specific embodiment of this valve, the side wall 13 is detachably connected to the top wall 11 and the bottom wall 12, and a sealing ring 4 is provided between the side wall 13 and the top wall 11, and between the side wall 13 and the bottom wall 12. The provision of a detachable wall structure makes the valve easier to assemble and manufacture, and the provision of the sealing ring 4 further ensures the sealing performance of the valve.

[0050] In some embodiments of the present application, a sealing ring 4 for forming a seal between the valve core assembly 2 and the valve body assembly 1 is arranged on the valve core assembly 2. In the sealed state, the sealing ring 4 is pressed between the valve core assembly 2 and the valve body assembly 1.

[0051] See Figure 6 In some embodiments of the present valve, the driving assembly 3 includes a linear cylinder 31 and a rotary cylinder 32. The linear cylinder 31 can drive the connected valve core assembly 2 to move in the positive direction a or negative direction of the first direction, and the rotary cylinder 32 can drive the connected valve core assembly 2 to rotate.

[0052] Specifically, the linear cylinder 31 comprises an upper cylinder head 311, a pressure plate 312, a bearing 313, a piston 314, a magnetic strip 315, a polyurethane 316, a sealing ring, and connecting screws. The rotary cylinder 32 comprises a rack 321, a gear 322, an end cap, a sealing ring, and connecting screws. The valve is opened or closed by the cylinder's upward and downward movement and rotation. The piston 314 of the linear cylinder 31 drives the cylinder shaft 33 in axial motion. The bearing 313 supports the rotation of the cylinder shaft 33, which is then rotated by the gear 322 of the rotary cylinder 32.

[0053] In some embodiments of the valve, a relief hole 110 is opened in the top wall 11 , and the cylinder shaft 33 in the linear cylinder passes through the rotary cylinder 32 and the relief hole 110 and is fixedly connected to the valve core assembly 2 .

[0054] In some embodiments of the present valve, a sealing member 6 is provided between the cylinder shaft 33 and the wall of the avoidance hole to achieve sealing of the connection portion of the cylinder shaft.

[0055] In some embodiments of the valve, the valve is a plunger valve. In a specific embodiment, the valve is a large-diameter plunger valve.

[0056] In some embodiments of the valve, the valve is a vacuum valve. For example, the valve is an automatically controlled vacuum valve that can be used in a vacuum system of a single crystal furnace industrial equipment, connects front and rear pipelines, and realizes switching and gas transportation.

[0057] In some embodiments of the valve, the sealing rings are all O-rings.

[0058] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A valve, characterized in that: include: A valve body assembly, comprising a top wall, a bottom wall, and a side wall, wherein the top wall, the bottom wall, and the side wall enclose a sealed cavity inside the valve body assembly, the sealed cavity is gradually expanded along the positive direction of the first direction, and at least two first through holes are formed in the side wall; a valve core assembly disposed in the sealed cavity, wherein the outer periphery of the valve core assembly is gradually expanded along the positive direction of the first direction, at least one flow channel is arranged in the valve core assembly, and at least one flow channel forms at least two second through holes in the outer periphery of the valve core assembly; and A driving assembly, disposed on the top wall and in transmission connection with the valve core assembly; The outer peripheral contour of the valve core assembly conforms to the contour of the sealing cavity, so that the outer peripheral wall surface of the valve core assembly can be in contact with the wall of the sealing cavity in a first position, and the driving assembly can drive the valve core assembly to move in the positive direction of the first direction to a second position when actuated, and the valve core assembly can be driven to rotate by the driving assembly in the second position; A sealing ring is arranged on the periphery of the first through hole or the periphery of the second through hole. By adjusting the posture of the valve core assembly in the valve body assembly, the first through hole can be aligned with the second through hole at the first position or the sealing ring can be aligned with the first through hole. The sealing ring seals between the relatively aligned first through hole and the second through hole or between the first through hole and the valve core assembly.

2. The valve according to claim 1, wherein: The positive direction of the first direction is the direction from the bottom wall toward the top wall.

3. The valve according to claim 2, wherein: The inner wall surface of the side wall is inclined outward from the bottom wall to the top wall, so that the sealed cavity is gradually expanded along the positive direction of the first direction.

4. The valve according to claim 3, wherein: There are four side walls, and the first through holes are respectively opened in two opposite side walls. A straight flow channel is opened in the valve core assembly to form two second through holes in the outer peripheral contour of the valve core assembly.

5. The valve according to claim 1, wherein: The side walls are detachably connected to the top wall and the bottom wall, and sealing rings are provided between the side walls and the top wall and between the side walls and the bottom wall.

6. The valve according to claim 1, wherein: The driving assembly includes a linear cylinder and a rotary cylinder.

7. The valve according to claim 6, wherein: A relief hole is provided in the top wall, and the cylinder shaft in the linear cylinder passes through the rotary cylinder and the relief hole and is fixedly connected to the valve core assembly.

8. The valve according to claim 7, wherein: A sealing member is provided between the cylinder shaft and the hole wall of the avoidance hole.

9. The valve according to any one of claims 1 to 8, characterized in that The valve is a plunger valve.

10. The valve according to any one of claims 1 to 8, characterized in that The valve is a vacuum valve.

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