Bypass valve assembly

Abstract

The utility model relates to a bypass valve assembly which comprises a valve body pipeline, two input pipes which are sequentially arranged along the central axis of the valve body pipeline are outwards formed on the outer wall of one side of the valve body pipeline, and two output pipes which are sequentially arranged along the central axis of the valve body pipeline are outwards formed on the outer wall of the other side of the valve body pipeline. A valve core is inserted into the opening in the end part of each of the two input pipes; the valve element comprises a valve sleeve, a fixed sleeve and a movable sleeve, the fixed sleeve is concentrically arranged in the valve sleeve in a sealed mode, the movable sleeve is movably arranged in the valve sleeve in a sealed mode, is concentrically distributed with the fixed sleeve and has an elastic reset function, and the end, facing the fixed sleeve, of the movable sleeve is movably inserted into an opening in the end, facing the movable sleeve, of the fixed sleeve in a sealed mode. Annularly-distributed conical guide holes are formed in the edge of an opening in the end, away from the fixed sleeve, of the movable sleeve; according to the utility model, the structural complexity of a fluid system is reduced, and the mounting and debugging steps are simplified, so that the use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bypass valve assembly. BACKGROUND

[0002] The bypass valve is a valve installed on the bypass pipeline, mainly used for adjusting the pressure or flow balance of the fluid system, and its core function is to realize system protection, pressure stabilization or flow distribution through the bypass channel; the existing bypass valve mostly must rely on the electric controller to adjust the opening degree, and the opening degree must rely on the size of the medium pressure value, in order to detect the medium pressure value in real time, it is necessary to install the sensor in the medium pipeline and assign a person responsible for operating the electric controller, which not only increases the structural complexity of the fluid system, but also leads to the relatively complicated installation and debugging steps, and the use is relatively inconvenient, and further improvement is needed. SUMMARY

[0003] In view of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a bypass valve assembly with a pressure difference automatic sensing function to reduce the structural complexity of the fluid system, and to simplify the installation and debugging steps to facilitate use.

[0004] The technical scheme adopted by the utility model to solve the above technical problem is: a bypass valve assembly, characterized by comprising a valve body pipeline, two input pipes are formed outward on one side of the outer wall of the valve body pipeline and arranged along the central axis of the valve body pipeline in sequence, two output pipes are also formed outward on the other side of the outer wall of the valve body pipeline and arranged along the central axis of the valve body pipeline in sequence, and a valve core is inserted into the end opening of each of the two input pipes;

[0005] The valve core comprises a valve sleeve, a fixed sleeve sealed and concentrically arranged in the valve sleeve, and a movable sleeve movably and sealingly arranged in the valve sleeve and concentrically distributed with the fixed sleeve and having an elastic reset function, one end of the movable sleeve movably and sealingly inserted into the opening at one end of the fixed sleeve facing the movable sleeve, and a conical guide hole is formed on the edge of the opening at the other end of the movable sleeve away from the fixed sleeve and distributed in a ring shape.

[0006] A plurality of first through holes are formed between the outer circumferential surface and the inner circumferential surface of the movable sleeve and evenly distributed at equal angles in the circumferential direction, and correspondingly, a plurality of second through holes are formed between the outer circumferential surface and the inner circumferential surface of the valve sleeve and evenly distributed at equal angles in the circumferential direction at the periphery of the insertion part of the movable sleeve and the fixed sleeve.

[0007] Preferably, a first annular groove is formed on the outer circumferential surface of each input pipe and distributed at the periphery of the plurality of second through holes, and a plurality of cavities are formed on the bottom surface of the first annular groove and evenly distributed at equal angles in the circumferential direction.

[0008] Preferably, each of the input pipes is further sealed and sleeved with a connecting ring, and a second annular groove is formed in the inner circumferential surface of the connecting ring.

[0009] Preferably, the outer circumferential surface of each of the connecting rings is further sleeved with at least one guide pipe, and each of the cavities is in communication with the interior of each of the guide pipes through the second annular groove.

[0010] Preferably, two first connecting hole groups are formed between the outer circumferential surface and the inner circumferential surface of the valve pipe, the two first connecting hole groups are respectively arranged inside the root openings of the two input pipes, each of the first connecting hole groups comprises a plurality of first connecting holes, and each of the input pipes is in communication with the interior of the valve pipe through each of the first connecting holes in the corresponding first connecting hole group.

[0011] Preferably, two second connecting hole groups are formed between the outer circumferential surface and the inner circumferential surface of the valve pipe, the two second connecting hole groups are respectively arranged inside the root openings of the two output pipes, each of the second connecting hole groups comprises a plurality of second connecting holes, and each of the output pipes is in communication with the interior of the valve pipe through each of the second connecting holes in the corresponding second connecting hole group.

[0012] Preferably, a cylindrical cavity is formed inside the opening of one end of the valve sleeve, the fixed sleeve and the movable sleeve are detachably arranged in the cylindrical cavity, a first step ring is formed outwardly on the outer circumferential surface of the opening of the end of the movable sleeve away from the fixed sleeve, a second step ring is formed outwardly on the end opening of the first step ring, the outer diameter of the first step ring is greater than the outer diameter of the movable sleeve and smaller than the outer diameter of the second step ring.

[0013] Preferably, an extension sleeve is formed outwardly on the opening of the end of the fixed sleeve facing the movable sleeve, a clamping ring is further embedded in the interior of the cylindrical cavity, a spring is further sleeved on the outside of the extension sleeve and the first step ring, and the two ends of the spring are tightly pressed against the root of the second step ring and the end of the fixed sleeve facing the movable sleeve, so that the end opening of the second step ring and the end of the fixed sleeve away from the movable sleeve are tightly pressed against the bottom surface of the cylindrical cavity and the clamping ring, respectively.

[0014] Preferably, an annular sink is further formed on the inner wall of the outside opening of each of the second through holes, and a sealed and detachable filter screen is further embedded in each of the annular sinks.

[0015] Preferably, a conical flow guide hole is formed on the edge of the opening of the end of the fixed sleeve away from the movable sleeve.

[0016] Compared with the prior art, the utility model has the advantages that: the utility model has the differential pressure automatic sensing function to save the necessity of equipping the electric controller, neither needs to install the sensor in the medium pipeline, nor needs to assign the special person to operate the electric controller when necessary, further reduces the structural complexity degree of the fluid system, and simplifies the installation and debugging steps, so as to facilitate use. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other features, advantages and aspects of the embodiments of the present application will become more apparent by referring to the following detailed description in conjunction with the accompanying drawings, in which like reference numerals indicate the same or similar elements throughout the drawings, and in which:

[0018] Fig. 1 is the bottom side exploded structural drawing of the utility model;

[0019] Fig. 2 is the axial section structure drawing of the valve core of the utility model;

[0020] Fig. 3 is the position drawing of the first connecting hole on the valve body pipeline of the utility model;

[0021] Fig. 4 is the position drawing of the second connecting hole on the valve body pipeline of the utility model. DETAILED DESCRIPTION

[0022] Unless otherwise defined, technical terms or scientific terms used in the present application shall be understood as having the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. Unless otherwise defined, the terms "first", "second", and similar terms in the present application do not indicate any order, quantity, or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right", and the like are only used to indicate relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0023] In order to keep the following description of the embodiments of the present application clear and concise, detailed descriptions of known functions and known components are omitted.

[0024] As Figs. 1-4As shown, a bypass valve assembly comprises a valve body pipe 1, two input pipes 11 are formed outwardly on one side outer wall of the valve body pipe 1 along the axis of the valve body pipe 1 in sequence, and two output pipes 12 are also formed outwardly on the other side outer wall of the valve body pipe 1 along the axis of the valve body pipe 1 in sequence, and a valve core 2 is inserted into the end opening of each input pipe 11.

[0025] The valve core 2 comprises a valve sleeve 21, a fixed sleeve 22 which is sealed and concentrically arranged inside the valve sleeve 21, and a movable sleeve 23 which is movably and sealingly arranged inside the valve sleeve 21 and concentrically distributed with the fixed sleeve 22 and has an elastic reset function, the end of the movable sleeve 23 towards the fixed sleeve 22 is movably and sealingly inserted into the opening of the end of the fixed sleeve 22 towards the movable sleeve 23, and a conical guide hole 234 is formed on the edge of the opening of the end of the movable sleeve 23 away from the fixed sleeve 22 and distributed in a ring shape.

[0026] A plurality of first through holes 232 are evenly distributed along the circumferential direction between the outer and inner circumferential surfaces of the movable sleeve 23, and correspondingly, a plurality of second through holes 211 are evenly distributed along the circumferential direction between the outer and inner circumferential surfaces of the valve sleeve 21 and arranged at the periphery of the insertion part of the movable sleeve 23 and the fixed sleeve 22.

[0027] A first annular groove 13 is formed on the outer circumferential surface of each input pipe 11 and arranged at the periphery of the second through holes 211, and a plurality of cavity holes 14 are evenly distributed along the circumferential direction on the bottom surface of the first annular groove 13.

[0028] A connecting ring 3 is sealingly sleeved on the outside of each input pipe 11, and a second annular groove 31 is formed on the inner circumferential surface of the connecting ring 3.

[0029] At least one through pipe 4 is inserted on the outer circumferential surface of each connecting ring 3, and each cavity hole 14 is in communication with the inside of each through pipe 4 through the second annular groove 31.

[0030] Two first connecting hole combinations are formed between the outer and inner circumferential surfaces of the valve body pipe 1, and each first connecting hole combination comprises a plurality of first connecting holes 15, and each input pipe 11 is in communication with the inside of the valve body pipe 1 through each first connecting hole 15 in the corresponding first connecting hole combination.

[0031] Two second connecting hole combinations are formed between the outer and inner circumferential surfaces of the valve body pipe 1, and each second connecting hole combination comprises a plurality of second connecting holes 16, and each output pipe 12 is in communication with the inside of the valve body pipe 1 through each second connecting hole 16 in the corresponding second connecting hole combination.

[0032] The valve sleeve 21 is internally formed with a concentrically arranged cylindrical cavity 212 at one end opening thereof, the fixed sleeve 22 and the movable sleeve 23 are detachably arranged in the cylindrical cavity 212, the movable sleeve 23 is externally formed with a first step ring 231 at the end opening thereof away from the fixed sleeve 22, the end opening of the first step ring 231 is externally formed with a second step ring 233, the outer diameter of the first step ring 231 is greater than the outer diameter of the movable sleeve 23 and smaller than the outer diameter of the second step ring 233.

[0033] The fixed sleeve 22 is externally formed with a concentrically arranged extension sleeve 221 at the end opening thereof towards the movable sleeve 23, the cylindrical cavity 212 is further embedded with a clamping ring 25, the extension sleeve 221 and the first step ring 231 are further sleeved with a spring 24, the two ends of the spring 24 are respectively tightly pressed against the root of the second step ring 233 and the end of the fixed sleeve 22 towards the movable sleeve 23 so that the end opening of the second step ring 233 and the end of the fixed sleeve 22 away from the movable sleeve 23 are respectively tightly pressed against the bottom surface of the cylindrical cavity 212 and the clamping ring 25.

[0034] The outer side opening of each second through hole 211 is further formed with an annular recess 213, and each annular recess 213 is further embedded with a sealed and detachable filter screen 26.

[0035] The edge of the end opening of the fixed sleeve 22 away from the movable sleeve 23 is formed with a ring-shaped tapered flow guide hole 222.

[0036] Working principle:

[0037] The two end openings of the valve body pipeline 1 are closed, and two pipelines for conveying medium are respectively connected to the end openings of the valve sleeves 21 of the two valve cores 2 which are not provided with the cylindrical cavities 212; when the medium starts to be conveyed, the medium first enters the valve sleeve 21, then passes through the movable sleeve 23 via the tapered guide hole 234, then passes through the fixed sleeve 22 and enters the input pipe 11 via the other end of the valve sleeve 21, and then enters the valve body pipeline 1 via each first connecting hole 15, so that the medium in the two input pipes 11 converges in the valve body pipeline 1; then, the medium in the valve body pipeline 1 enters the two output pipes 12 via each second connecting hole 16, respectively, so as to be divided into two streams and discharged outward.

[0038] When the medium pressure in the moving sleeve 23 is large, the medium will generate a pushing force on the conical guide hole 234 when passing through the moving sleeve 23, thereby forcing the moving sleeve 23 to move towards the fixed sleeve 22 and compressing the spring 24, so that each first through hole 232 gradually enters the fixed sleeve 22, thereby preventing the medium from entering the cylindrical cavity 212 through each first through hole 232, at this time the bypass valve is in a normal working state; but when the medium pressure decreases, the pushing force of the medium on the conical guide hole 234 is less than the rebound force of the spring 24, the moving sleeve 23 will slowly move out of the fixed sleeve 22, thereby allowing a small amount of medium to enter the cylindrical cavity 212 through each first through hole 232, then enter the input pipe 11 through each second through hole 211, then enter the first annular groove 13 and the second annular groove 31 through each cavity hole 14, then overflow outward through each through pipe 4, and then one of the through pipes 4 is provided with a sensor, the sensor can detect the medium in the through pipe 4, thereby judging that the medium pressure is abnormal.

[0039] The utility model discloses a differential pressure automatic sensing function to save the necessary of equipping electric controller, neither need to install sensor in medium pipeline, also need not assign special person to operate electric controller when necessary, thereby reduce the structural complexity degree of fluid system, also simplify the installation and debugging step, thereby facilitate the use.

[0040] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the utility model embodiments.

Claims

1. A bypass valve assembly, characterized by, The valve body pipeline is provided with two input pipes arranged along the central axis of the valve body pipeline on one side of the valve body pipeline, and two output pipes arranged along the central axis of the valve body pipeline on the other side of the valve body pipeline. The valve core comprises a valve sleeve, a fixed sleeve arranged concentrically in the valve sleeve, and a movable sleeve arranged movably and concentrically in the valve sleeve and having an elastic reset function, wherein one end of the movable sleeve towards the fixed sleeve is movably and sealingly inserted into the opening at one end of the fixed sleeve towards the movable sleeve, and a conical guide hole is formed on the edge of the opening at the other end of the movable sleeve away from the fixed sleeve. A plurality of first through holes are evenly distributed along the circumferential direction between the outer circumferential surface and the inner circumferential surface of the movable sleeve, and correspondingly, a plurality of second through holes are evenly distributed along the circumferential direction between the outer circumferential surface and the inner circumferential surface of the valve sleeve at the periphery of the insertion part of the movable sleeve and the fixed sleeve.

2. A bypass valve assembly according to claim 1, wherein A first annular groove is formed on the outer circumferential surface of each input pipe at the periphery of the second through holes, and a plurality of cavities are evenly distributed along the circumferential direction on the bottom surface of the first annular groove.

3. A bypass valve assembly according to claim 2, wherein A connecting ring is sealingly sleeved on the outside of each input pipe, and a second annular groove is formed on the inner circumferential surface of the connecting ring.

4. A bypass valve assembly according to claim 3, wherein At least one through pipe is inserted on the outer circumferential surface of each connecting ring, and each cavity is in communication with the inside of each through pipe through the second annular groove.

5. A bypass valve assembly according to claim 1, wherein Two first connecting hole groups are formed between the outer circumferential surface and the inner circumferential surface of the valve body pipeline, and the two first connecting hole groups are arranged inside the root openings of the two input pipes, respectively.

6. A bypass valve assembly according to claim 1, wherein Each first connecting hole group comprises a plurality of first connecting holes, and each input pipe is in communication with the inside of the valve body pipeline through each first connecting hole in the corresponding first connecting hole group.

7. A bypass valve assembly according to claim 1, wherein Two second connecting hole groups are formed between the outer circumferential surface and the inner circumferential surface of the valve body pipeline, and the two second connecting hole groups are arranged inside the root openings of the two output pipes, respectively. Each second connecting hole group comprises a plurality of second connecting holes, and each output pipe is in communication with the inside of the valve body pipeline through each second connecting hole in the corresponding second connecting hole group. A cylindrical cavity is formed inside the opening at one end of the valve sleeve, and the fixed sleeve and the movable sleeve are detachably arranged in the cylindrical cavity. A first step ring is formed on the outer circumferential surface of the movable sleeve away from the fixed sleeve, and a second step ring is formed on the end opening of the first step ring.

8. A bypass valve assembly according to claim 7, wherein The outer end of the fixed sleeve towards the moving sleeve is outwardly formed with a concentrically arranged extension sleeve, the inside of the cylindrical cavity is further embedded with a collar, the outside of the extension sleeve and the first stepped collar is further sleeved with a spring, and the two ends of the spring are respectively tightly pressed against the root of the second stepped collar and the outer end of the fixed sleeve towards the moving sleeve, so that the end opening of the second stepped collar and the outer end of the fixed sleeve away from the moving sleeve are respectively tightly pressed against the bottom surface of the cylindrical cavity and the collar.

9. A bypass valve assembly according to claim 1, wherein, The outer opening of each second through hole is further formed with an annular sink cavity, and each annular sink cavity is further embedded with a sealed and detachable filter screen.

10. A bypass valve assembly according to claim 1, wherein The outer end of the fixed sleeve away from the moving sleeve is formed with a ring-shaped tapered flow guide hole.

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