Balance valve

Abstract

The utility model relates to the technical field of fluid control, and provides a balance valve which comprises a shell, a valve element, a valve element and a valve element. A valve seat cavity is formed in the valve seat, a first opening and a second opening are formed in the valve seat, and the first opening and the second opening are communicated to form a channel for fluid circulation; a first sealing part and a second sealing part are arranged on the valve element assembly; a fluid medium flows into the shell driving cavity to push the valve element assembly to move, the tail end of the second sealing part is gradually inserted into the first opening and moves along the outline of the first opening till the first sealing part abuts against the inner plane of the valve seat cavity, the second sealing part abuts against the inner wall of the first opening, the first opening is sealed, and the fluid flowing channel is closed in the process. The first opening not only plays a guiding role, but also helps to maintain the accuracy of the sealing positions of the first sealing part and the second sealing part, and due to the double-sealing design of the first sealing part and the second sealing part, the sealing of the balance valve in the scheme is more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control, in particular to a balancing valve. Background Art

[0002] A balancing valve is a valve specifically designed to control the flow of fluids (such as water, beverages, and other media). It controls the gap (i.e., the opening) between the valve core and the valve seat to control the flow of fluid within the valve seat. Balancing valves are commonly used in food and beverage canning equipment to control the flow of beverages, but they can also be used in other piping systems to control the flow of fluids.

[0003] In the prior art, balancing valve seals typically employ two structures: 1. A planar seal structure with close contact between the valve core assembly and the inner plane of the valve seat. When the valve core assembly and the inner plane of the valve seat are completely in contact, this effectively prevents fluid leakage through unintended paths, thereby ensuring the valve can be effectively sealed when closed. However, with this sealing method, the contact position between the valve core assembly and the inner plane of the valve seat can easily shift due to external forces or prolonged use, which in turn affects the sealing effect. If the valve core assembly and the inner plane of the valve seat cannot form stable contact, an "incomplete seal" will occur. 2. A conical seal structure with close contact between the valve core assembly and the inner plane of the valve seat. When the valve core assembly is completely in contact with the inner conical surface of the valve seat, it can effectively prevent the fluid from leaking through unexpected paths, thereby ensuring that the valve can be effectively sealed when closed. However, with this sealing method, the contact position between the valve core assembly and the inner conical surface of the valve seat is easily affected by external forces or long-term use and changes. The conical surface of the valve core assembly will also wear out during long-term operation, thereby affecting the sealing effect, making it impossible to form stable contact between the valve core assembly and the inner conical surface of the valve seat, resulting in "incomplete sealing". Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a balancing valve in view of the current status of the existing technology.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: to propose a balancing valve, comprising:

[0006] a housing, wherein a housing drive cavity is provided;

[0007] a valve seat having a valve seat cavity therein, the housing drive cavity being in communication with the valve seat cavity, the valve seat cavity being provided with a first opening and a second opening, the first opening and the second opening being located on the same side of the valve seat cavity and being in communication with each other, for forming a channel for fluid circulation;

[0008] a valve core assembly movably disposed between the housing drive cavity and the valve seat cavity, wherein one end of the valve core assembly disposed in the valve seat cavity comprises a first sealing portion and a second sealing portion, wherein the first sealing portion movably abuts against a plane within the valve seat cavity, and the second sealing portion movably inserted into the first opening;

[0009] The second sealing portion can move toward the first opening due to the flow of fluid medium into the housing drive cavity;

[0010] The first opening can be sealed because the first sealing portion and the second sealing portion respectively abut against the inner plane of the valve seat cavity and the inner wall of the first opening, so as to keep the channel in a closed state.

[0011] In the above-mentioned balancing valve, the second sealing portion is a conical structure, and the shape of the inner wall of the first opening is adapted to the conical structure.

[0012] In the above-mentioned balancing valve, the inner plane of the valve seat cavity is provided with a concave-convex structure, and the first sealing portion can be tightly pressed against the concave-convex structure by abutting against the inner plane of the valve seat cavity.

[0013] In the above-mentioned balancing valve, a convex edge is provided on the inner wall of the first opening, and the second sealing portion can be moved to a preset position along the inner wall of the first opening to be tightly pressed against the convex edge.

[0014] In the above-mentioned balancing valve, a third opening is further provided on the housing, and the third opening is communicated with the housing drive cavity for allowing the fluid medium to flow into the housing drive cavity.

[0015] In the above-mentioned balancing valve, the second opening is used for allowing fluid to flow into the channel, and the first opening is used for allowing fluid in the flow channel to flow out.

[0016] Compared with the prior art, the advantage of the present invention is that, by arranging a shell drive cavity in the shell, a first opening and a second opening on the valve seat, and a first sealing portion and a second sealing portion on the valve core assembly; when it is necessary to seal the fluid flow channel, the external control fluid medium will flow into the shell drive cavity, and this fluid medium will generate thrust to push the valve core assembly toward the first opening. As the valve core assembly moves, the end of the second sealing portion gradually inserts into the first opening and continues to move along the contour of the first opening until the first sealing portion is in close contact with the inner plane of the valve seat cavity. At this time, the second sealing portion is in close contact with the first opening. The first sealing part and the second sealing part are in close contact with each other, and the inner wall of the opening is in close contact. In addition, during the movement of the valve core assembly, the first opening not only plays a guiding role, but also helps to maintain the position accuracy of the first sealing part and the second sealing part, so that the first sealing part and the second sealing part can remain stable and will not deviate from their ideal sealing position due to external force or long-term use. More importantly, the double sealing design of the first sealing part and the second sealing part makes the sealing of the balancing valve in this solution more reliable and avoids the situation of "incomplete sealing". Even if the second sealing part is not sealed due to wear, the reliable sealing of the first sealing part can still be guaranteed due to the guiding effect of the second sealing part. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of this scheme;

[0018] Figure 2 is a cross-sectional view of the embodiment in which the second sealing portion is not inserted into the first opening;

[0019] Figure 3 yes Figure 2 Enlarged view of the middle Z;

[0020] Figure 4 is a cross-sectional view of the second sealing portion inserted into the first opening in this solution;

[0021] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0022] In the figure, 101 is the shell; 102 is the valve seat; 103 is the valve core assembly; 1 is the first sealing part; 2 is the second sealing part; 3 is the second opening; 4 is the first opening; 5 is the third opening; 6 is the concave-convex structure; 7 is the convex edge; 8 is the shell drive cavity; 9 is the valve seat cavity. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] like Figures 1 to 5As shown, a balancing valve of the present invention includes: a shell 101, in which a shell drive chamber 8 is provided; a valve seat 102, in which a valve seat cavity 9 is provided, the shell drive chamber 8 is communicated with the valve seat cavity 9, and a first opening 4 and a second opening 3 are provided on the valve seat cavity 9, the first opening 4 and the second opening 3 are located on the same side of the valve seat cavity 9 and are communicated with each other, so as to form a channel for fluid circulation; a valve core assembly 103, which is movably arranged between the shell drive chamber 8 and the valve seat cavity 9, and the valve core assembly 103 is arranged at one end of the valve seat cavity 9 and has a first sealing portion 1 and a second sealing portion 2, the first sealing portion 1 movably abuts against the inner plane of the valve seat cavity 9, and the second sealing portion 2 is movably inserted on the first opening 4; the second sealing portion 2 can move toward the direction of the first opening 4 due to the fluid medium flowing into the shell drive chamber 8; the first opening 4 can be sealed because the first sealing portion 1 and the second sealing portion 2 are respectively pressed against the inner plane of the valve seat cavity 9 and the inner wall of the first opening 4, so as to keep the channel in a closed state.

[0025] During operation, when the first sealing portion 1 and the second sealing portion 2 are respectively separated from the inner wall plane of the valve seat cavity 9 and the first opening 4, the fluid can flow freely through the channel between the first opening 4 and the second opening 3, and the fluid flow channel is in an open state at this time; when the fluid flow channel needs to be closed, the fluid medium (such as compressed air or other driving medium) will flow into the shell driving cavity 8, and this fluid medium will generate thrust to push the valve core assembly 103 toward the first opening 4. As the valve core assembly 103 moves, the end of the second sealing portion 2 gradually inserts into the first opening 4 and continues to move along the contour of the first opening 4 until the first sealing portion 1 is in close contact with the inner plane of the valve seat cavity 9. At this time, the second sealing portion 2 is in a closed state. The second sealing part 2 is in close contact with the inner wall of the first opening 4. In addition, during the movement of the valve core assembly 103, the first opening 4 not only plays a guiding role, but also helps to maintain the accuracy of the sealing position of the first sealing part 1 and the second sealing part 2, so that the first sealing part 1 and the second sealing part 2 can remain stable and will not deviate from their ideal sealing position due to external force or long-term use. More importantly, the double sealing design of the first sealing part 1 and the second sealing part 2 makes the sealing of the balancing valve in this scheme more reliable and avoids the situation of "incomplete sealing". Even if the second sealing part 2 is not sealed due to wear, the reliable sealing of the first sealing part 1 can still be guaranteed due to the guiding effect of the second sealing part 2.

[0026] Specifically, the second sealing portion 2 is a conical structure, and the inner wall shape of the first opening 4 is adapted to the conical structure; through the design of this conical structure and the matching inner wall of the first opening 4, when the end of the valve core assembly 103 is inserted into the first opening 4, the natural guiding effect of the conical surface can be utilized to enable the second sealing portion 2 to accurately fit the inner wall of the first opening 4, thereby enhancing the reliability and stability of the seal.

[0027] In order to enhance the sealing effect, a concave-convex structure 6 is provided on the inner plane of the valve seat cavity 9. When the first sealing part 1 is pressed against the inner plane of the valve seat cavity 9, it can be tightly pressed on these concave-convex structures 6, thereby achieving more effective sealing. This design can not only improve the tightness of the seal, but also compensate to a certain extent for the decline in sealing performance caused by wear or deformation. The material of the first sealing part 1 can be plastic or rubber.

[0028] In order to improve the sealing effect, a convex edge 7 is designed on the inner wall of the first opening 4. When the second sealing part 2 moves to a preset position along the inner wall of the first opening 4, the second sealing part 2 is tightly pressed on the convex edge 7, thereby achieving more effective sealing. This design not only improves the tightness of the seal, but also provides higher reliability and stability for long-term use. The material of the second sealing part 2 can be plastic or rubber.

[0029] In order to ensure that the fluid medium (such as compressed air or other driving medium) can flow smoothly into the housing drive cavity 8 , a third opening 5 is further provided on the housing 101 , and the third opening 5 is directly connected to the housing drive cavity 8 .

[0030] The third opening 5 provided on the shell 101 is for directly connecting the third opening 5 with the valve core assembly 103, thereby realizing effective control of the valve core assembly 103. The external control fluid medium will flow into the valve core assembly 103 shell drive chamber 8 through the third opening 5, generating the necessary pressure to push the valve core assembly 103.

[0031] Specifically, the second opening 3 is used to allow fluid to flow into the channel formed by the first opening 4 and the second opening 3, while the first opening 4 is used to allow fluid to flow out of this channel; when the balancing valve in this scheme is in an open state, the external fluid enters the channel through the second opening 3, and after passing through the channel, the fluid flows out through the first opening 4. This design ensures that the fluid flow path is clear and efficient; when the channel needs to be closed, by controlling the movement of the valve core assembly 103, the first sealing part 1 and the second sealing part 2 are respectively in close contact with the inner plane of the valve seat cavity 9 and the inner wall of the first opening 4, thereby achieving a sealing effect.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, terms such as "first," "second," and "an" in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0035] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0036] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them with similar methods, without departing from the scope defined by the spirit of the present invention.

Claims

1. A balancing valve, characterized in that: include: a housing, wherein a housing drive cavity is provided; a valve seat having a valve seat cavity therein, the housing drive cavity being in communication with the valve seat cavity, the valve seat cavity being provided with a first opening and a second opening, the first opening and the second opening being located on the same side of the valve seat cavity and being in communication with each other, for forming a channel for fluid circulation; a valve core assembly movably disposed between the housing drive cavity and the valve seat cavity, wherein one end of the valve core assembly disposed in the valve seat cavity comprises a first sealing portion and a second sealing portion, wherein the first sealing portion movably abuts against a plane within the valve seat cavity, and the second sealing portion movably inserted into the first opening; The second sealing portion can move toward the first opening due to the flow of fluid medium into the housing drive cavity; The first opening can be sealed because the first sealing portion and the second sealing portion respectively abut against the inner plane of the valve seat cavity and the inner wall of the first opening, so as to keep the channel in a closed state.

2. A balancing valve as claimed in claim 1, characterized in that: The second sealing portion is a conical structure, and the inner wall shape of the first opening is adapted to the conical structure.

3. A balancing valve as claimed in claim 1, characterized in that: The inner plane of the valve seat cavity is provided with a concave-convex structure, and the first sealing portion can be tightly pressed against the concave-convex structure by abutting against the inner plane of the valve seat cavity.

4. A balancing valve as claimed in claim 1, characterized in that: The inner wall of the first opening is provided with a convex edge, and the second sealing portion can be moved to a preset position along the inner side wall of the first opening to be tightly pressed against the convex edge.

5. A balancing valve as claimed in claim 1, characterized in that: The housing is further provided with a third opening, which is in communication with the housing drive cavity and is used for allowing the fluid medium to flow into the housing drive cavity.

6. A balancing valve as claimed in claim 1, characterized in that: The second opening is used for allowing fluid to flow into the channel, and the first opening is used for allowing fluid in the channel to flow out.

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