Multi-channel ball valve

Abstract

According to the multi-channel ball valve, a main flow channel is arranged on the bottom wall or the top wall of a valve element, at least three branch flow channels are arranged on the side wall of a valve body, and meanwhile, a first flow channel opening of a flow channel is formed in the position corresponding to the main flow channel; and the second flow channel openings of the flow channels are formed in the positions corresponding to the distribution tracks of the at least three flow dividing channels, so that one flow channel can be controlled to be conducted or all the flow dividing channels can be controlled to be closed each time only through one flow channel, the reversing operation or the full-closing operation of the valve is achieved, operation is very convenient, and the working efficiency is improved. Due to the fact that only one flow channel is needed for controlling reversing and full closing, the structure is simplified, and meanwhile the design and use requirements of more flow dividing channels can be met; and secondly, due to the fact that the valve element is only provided with one passage, the sealing performance of the ball valve can be effectively guaranteed, and in addition, due to the fact that the passage switching is simple, the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a multi-channel ball valve. Background Art

[0002] Ball valves are mainly used to cut off or connect media in pipelines, and can also be used to regulate and control fluids. Among them, the existing multi-channel ball valve drives the valve core inside the core body to rotate by rotating the valve stem, so that the passage of the ball valve changes, thereby flexibly controlling the confluence, diversion, or switching of flow direction of the media.

[0003] Although the existing multi-channel ball valves can meet the vast majority of usage scenarios, there are some shortcomings because the existing ball valves set the main channel and the branch channel on the side of the valve body, resulting in a relatively complex valve core passage layout. For example: 1. The existing multi-channel ball valves, especially the reversing multi-channel ball valves, have a large number of branch channels, and the passage design becomes extremely complex or even impossible to design; 2. The sealing performance of the ball valve passage cannot be well guaranteed; 3. The passage change process of the medium flow when the ball valve is working is complex and the working efficiency is low. Utility Model Content

[0004] The main purpose of the utility model is to provide a multi-channel ball valve, aiming to solve the problem of complex passages of the multi-channel ball valve in the prior art.

[0005] To achieve the above objectives, the utility model provides a multi-channel ball valve, comprising:

[0006] A valve body, which defines a valve body chamber inside, a main flow channel connected to the valve body chamber is provided on the top wall or the bottom wall of the valve body, and at least three branch flow channels connected to the valve body chamber are provided on the side wall;

[0007] A valve core is rotatably disposed in the valve body chamber, a flow channel is defined inside the valve core, a first flow channel opening of the flow channel is connected to the main flow channel, and a second flow channel opening corresponds to the distribution track of at least three of the branch flow channels, when the second flow channel opening rotates along the distribution track with the valve core to be opposite to one of the branch flow channels, it is connected to the one branch flow channel, and the other branch flow channels are closed by the valve core; and

[0008] The valve stem is used to drive the valve core to drive the first flow channel opening to rotate along the distribution trajectory.

[0009] Furthermore, the valve body includes a cover body and a shell with an open top. The cover body is covered on the shell and closes the top of the shell. A through hole is formed in the middle of the cover body. The top of the valve stem extends out of the through hole of the valve body, and the bottom is connected to the valve core. A first sealing component is provided at the connection between the valve stem and the through hole.

[0010] Furthermore, the lower part of the valve stem is formed as a non-circular driving part, the upper surface of the valve core is provided with a driving groove matching the driving part, the driving part extends into the driving groove, and the valve stem is provided with a step surface below the through hole, which abuts against the bottom of the cover body.

[0011] Furthermore, it also includes a pipe joint installed on the diversion channel from the outside, the number of the pipe joints corresponds to the number of the diversion channels, the end of the pipe joint extends into the valve body chamber and is sealed with the valve core.

[0012] Furthermore, an end face of the pipe joint is formed with an inwardly concave step, and a second sealing component is partially embedded in the step axially.

[0013] Furthermore, a support component is provided at an area on the inner side of the valve body opposite to the concentrated area of ​​the pipe joint.

[0014] Furthermore, an embedding groove is formed on the inner side of the valve body in an area opposite to the concentrated area of ​​the pipe joint, and the supporting component is embedded in the embedding groove.

[0015] Furthermore, the supporting component is annular, the embedding groove is a suitable embedding groove, and the supporting component is embedded in the embedding groove.

[0016] Furthermore, the bottom surface of the valve core is formed into a pivot groove, and the inner bottom of the valve body is provided with a pivot extending into the pivot groove, so that the valve core can rotate around the axis of the pivot.

[0017] Furthermore, the pivot groove and the pivot shaft are both annular, and the first flow channel opening is located at the inner periphery of the pivot groove.

[0018] The technical solution of the utility model sets the mainstream channel on the bottom wall or the top wall of the valve core, and sets at least three diverter channels on the side wall of the valve body. At the same time, the first flow channel opening of the flow channel is set at a position corresponding to the mainstream channel, and the second flow channel opening of the flow channel is set at a position corresponding to the distribution trajectory of at least three said diverter channels, so that the utility model can control the conduction of one diverter channel or the closing of all diverter channels at a time through only one flow channel, thereby realizing the reversing or full closing operation of the valve, which is very convenient to operate. Moreover, since the utility model only needs one flow channel to control the reversing and full closing mode, it simplifies the structure and can meet the design and use requirements of more diverter channels. Secondly, since the valve core has only one passage, the sealing performance of the ball valve is more effectively guaranteed. In addition, since the passage switching of the utility model is simple, the working efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the first embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the second embodiment of the utility model;

[0021] Figure 3 This is an exploded schematic diagram of the first embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the valve core;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the valve core when it is vertically cut open.

[0024] The above drawings include the following reference numerals:

[0025] 1. Valve body; 11. Main flow channel; 12. Branch flow channel; 13. Valve body chamber; 131. Embedded groove; 132. Support component; 14. Cover body; 141. Through hole; 15. Shell; 16. Fixed frame; 161. Frame plate; 162. Fixed hole; 2. Valve core; 21. First flow channel opening; 22. Second flow channel opening; 23. Flow channel; 24. Drive groove; 25. Pivot groove; 26. Pivot; 3. Valve stem; 31. Step surface; 32. Annular groove; 33. First sealing component; 34. Drive unit; 4. Pipe joint; 41. Second sealing component. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0029] The utility model provides a multi-channel ball valve.

[0030] In the embodiment of the utility model, Figures 1 to 5 As shown, the multi-channel ball valve includes a valve body 1, a valve core 2 and a valve stem 3. The valve body 1 defines a valve body chamber 13. The valve body 1 is provided with a main flow channel 11 connected to the valve body chamber 13 on the top wall or the bottom wall, and at least three branch flow channels 12 connected to the valve body chamber are provided on the side wall. The valve core 2 is rotatably arranged in the valve body chamber 13. The valve core 2 defines a flow channel 23. The two ends of the flow channel 23 are a first flow channel opening 21 and a second flow channel opening 22. The first flow channel opening 21 is located on the top wall of the valve core 2 and docks with the main flow channel 11. The second flow channel opening 22 is located on the side wall of the valve core 2 and corresponds to the distribution track of at least three branch flow channels 12. When the second flow channel opening 22 rotates along the distribution track with the valve core 2 to communicate with one of the branch flow channels 12, the remaining branch flow channels 12 are closed by the valve core 2. The valve stem 3 is used to drive the valve core 2 and drive the first flow channel opening 21 to rotate along the distribution track of the branch flow channel 12. Specifically, when the valve stem 3 drives the valve core 2 to rotate in the valve body chamber 13 and rotates the second flow channel opening 22 to the specific required diverter channel 12, the other diverter channels 12 are closed by the peripheral wall of the valve core 2, so that the utility model can control the conduction of one diverter channel 12 or the closure of all diverter channels 12 at a time through only one flow channel 23, thereby realizing the reversal or full closure operation of the valve, which is very convenient to operate. Moreover, since the utility model only needs one flow channel 23 to control the reversal and full closure, it simplifies the structure while meeting the design and use requirements of more diverter channels. Secondly, since the valve core has only one passage, the sealing performance of the ball valve is more effectively guaranteed. In addition, since the passage switching of the utility model is simple, the working efficiency is improved.

[0031] In this embodiment, the flow channel 23 is L-shaped as a whole (eg Figure 5 as shown), arc or curve shape, etc.

[0032] In this embodiment, if Figures 1 to 3As shown, the valve body 1 includes a cover 14 and a shell 15 with an open top. The cover 14 is covered on the shell 15 and closes the top of the shell 15. Specifically, the cover 14 and the shell 15 are detachably connected by conventional connection forms such as a snap-fit ​​structure or a threaded structure. A through hole 141 is formed in the middle of the cover 14. The top of the valve stem 3 extends out of the through hole 141 in the cover 14, and the bottom is connected to the valve core 2. A first sealing component 33 is provided at the connection between the valve stem 3 and the through hole 141 to prevent the medium from flowing out of the valve body 1 through the through hole 141. Specifically, an annular groove 32 is formed on the peripheral wall of the valve stem 3 corresponding to the position of the through hole 141. The first sealing component 33 is preferably set as a rubber ring, which is sleeved in the annular groove 32 and seals against the peripheral wall of the through hole 141 to achieve the purpose of sealing. When considering the replacement of the first sealing component 33, the aforementioned preferred rubber ring can be replaced by conventional sealing materials such as nylon rings and graphite rings. This is a prior art and will not be described in detail here. Furthermore, in the present embodiment, the top wall of the cover body 14 is also integrally formed with or fixed with a support frame 17 for partially passing the valve stem 3. The support frame 17 is used to fix an external actuator (not shown). The actuator can be an electric actuator or a pneumatic actuator, etc. After the actuator is fixed to the support frame, its driving end is connected to the valve stem 3 and can drive the valve stem to rotate. Therefore, of course, the valve stem 3 can also be manually driven to rotate by tools such as a wrench. The actuator is a prior art, and its specific structure and installation method are not described in detail here.

[0033] Specifically, the lower portion of the valve stem 3 is formed as a non-circular driving portion 34, and the upper surface of the valve core 2 is provided with a driving groove 24 matching the driving portion 34. The driving portion 34 extends into the driving groove 24. The valve stem 3 is provided with a step surface 31 at a position below the through hole 141, and the step surface 31 abuts against the bottom of the cover body 14. The function of the step surface 31 is to prevent the valve stem 3 from slipping out of the valve body 1.

[0034] In this embodiment, if Figures 1 to 3 As shown, the utility model further includes a pipe joint 4 installed on the diversion channel 12 from the outside, the number of the pipe joints 4 corresponds to the number of the diversion channels 12, the end of the pipe joint 4 extends into the valve body chamber 13, and is sealed with the valve core 2, and the function of the pipe joint 4 is to connect the first external pipeline. Preferably, the first external pipeline can be used for medium output.

[0035] It can be understood that the present invention also includes a pipe joint 4 installed on the main flow channel 11 from the outside, the end of the pipe joint 4 extends into the valve body chamber 13 and docks with the first flow channel opening to connect the second external pipeline and the flow channel. Preferably, the second external pipeline can be used for medium input.

[0036] Specifically, the pipe joint 4 is preferably screwed into the corresponding diversion channel 12 and the main channel 11 by threaded fitting, and is sealed at the joint to achieve a better sealing effect. A typical case is, for example, the use of a waterproof tape or a sealing ring. The specific sealing treatment and setting belongs to the prior art and will not be elaborated here. In addition, it is obvious that the pipe joint 4 can also use conventional technical forms such as flange connection and welding connection to limit the connection relationship.

[0037] The end face of the pipe joint 4 is formed with an inwardly concave step (not marked), and a second sealing component 41 is axially partially embedded in the step to seal the pipe joint 4 with the valve core 2 to prevent leakage when the medium flows. The embodiment of the second sealing component 41 refers to the first sealing component 33 and is not described here in detail.

[0038] It can be understood that the pipe joint 4 partially extends into the valve body chamber 13. If the diverting channel 12 is not evenly distributed around the center line of the valve body 1, the side wall of the valve core 2 cannot be evenly supported by the pipe joint 4, which may cause the valve core 2 to deviate laterally under the action of the medium pressure and affect the sealing between the pipe joint 4 and the valve core 2. Therefore, when the pipe joint 4 is partially concentrated, in order to prevent the valve core 2 from deviating laterally under the medium pressure, a support component 132 can be provided on the inner side of the valve body 1 in an area opposite to the concentrated area of ​​the pipe joint 4.

[0039] Specifically, an embedding groove 131 is formed in an area of ​​the inner side of the valve body 1 opposite to the concentrated area of ​​the pipe joint 4 , and the supporting component 132 is embedded in the embedding groove 131 .

[0040] More specifically, the support member 132 is annular, and the embedding groove 131 is a corresponding annular groove, such as Figure 3 As shown, the support component 132 is embedded in the embedding groove 131. According to technical judgment, the form of using the annular support component 132 embedded in the embedding groove 131 on the opposite side of the shunt channel 12 produces a better effect. More preferably, when the embedding groove 131 is set on the opposite side of the midpoint of the shunt channel 12, the annular support component 132 is embedded to achieve the best effect. Specifically, the support component 132 is made of metal or non-metal material. When made of non-metal material, rubber, plastic, nylon and other materials can be used.

[0041] In some other embodiments, as an alternative, the support component 132 may not be provided with the embedding groove 131 structure. For example, in the valve body chamber 13 of the valve body 1, the support component 132 can be fixedly installed directly on the opposite side of the point where the diversion channel 12 is concentrated to provide lateral support for the valve core 2, for example, by means of adhesive fixation to the inner surface of the valve body.

[0042] It is worth noting that the support component 132 arranged in the valve body chamber 13 does not have to be arranged on the opposite side of the point where the diversion channel 12 is concentrated. In some non-preferred embodiments, lateral support for the valve core 2 can be achieved only by being arranged on the side of the valve body chamber 13 and increasing the number of installations.

[0043] In this embodiment, based on the aforementioned definition of the rotation of the valve core 2, that is, the valve core 2 is rotatably arranged in the valve body chamber 13 and rotates with the valve stem 3, and for a better rotation effect, a pivot groove 25 is formed on the bottom surface of the valve core 2, and a pivot 26 extending into the pivot groove 25 is provided at the inner bottom position of the valve body 1. Preferably, the pivot groove 25 and the pivot 26 are both annular, the first flow channel opening is located at the inner periphery of the pivot groove, and the pivot 26 is located at the inner periphery of the pivot groove. Figure 3 It can be seen that the pivot 26 allows the valve core 2 to rotate around the axis of the pivot 26, and the structure combining the pivot groove 25 and the pivot 26 can ensure the stability of the rotation. Furthermore, in order to improve the smoothness of the rotation of the valve core 2, the pivot 26 can also install a bearing (not marked) in the pivot groove 25 to achieve this purpose.

[0044] In this embodiment, if Figures 1 to 3 As shown, the side of the valve body 1 is integrally formed or installed with a fixing frame 16, which includes a frame plate 161 and a fixing hole 162 formed on the frame plate 161. The fixing frame 16 is set on a carrier required for a specific work at the position of the fixing hole 162 through conventional structures such as threads and flanges, so as to fix the valve body 1 at the working position. In some other embodiments, the frame plate 161 is in an I-shape as a whole, which is designed for the purpose of simple structure and material saving. At the same time, the position and number of the fixing holes 162 are not limited. Figure 1 The figure shows a case where four fixing holes 162 are provided. The four fixing holes 162 are preferably formed at the four corners of the frame plate 161. This arrangement can make the connection between the fixing frame 16 and the carrier more stable. When the fixing frame 16 is not formed integrally with the valve body 1, the frame plate 161 can be fixed to the valve body 1 by existing connection methods such as threads and flanges, which will not be described in detail here.

[0045] Optionally, the number of the branch channels may be 3 to 20, depending on the specific use requirements, and may specifically be 3 to 10, for example 3 (eg Figure 1 ), 4, 5, 6, 7 (as shown), Figure 2 as shown) or 8, etc.

[0046] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. Multi-channel ball valve, characterized in that: include: A valve body, which defines a valve body chamber inside, a main flow channel connected to the valve body chamber is provided on the top wall or the bottom wall of the valve body, and at least three branch flow channels connected to the valve body chamber are provided on the side wall; A valve core is rotatably disposed in the valve body chamber, a flow channel is defined inside the valve core, a first flow channel opening of the flow channel is connected to the main flow channel, and a second flow channel opening corresponds to the distribution track of at least three of the branch flow channels, when the second flow channel opening rotates along the distribution track with the valve core to be opposite to one of the branch flow channels, it is connected to the one branch flow channel, and the other branch flow channels are closed by the valve core; and The valve stem is used to drive the valve core to drive the first flow channel opening to rotate along the distribution trajectory.

2. The multi-channel ball valve according to claim 1, characterized in that: The valve body includes a cover body and a shell with an open top. The cover body is covered on the shell and closes the top of the shell. A through hole is formed in the middle of the cover body. The top of the valve stem extends out of the through hole of the valve body, and the bottom is connected to the valve core. A first sealing component is provided at the connection between the valve stem and the through hole.

3. The multi-channel ball valve according to claim 2, characterized in that: The lower part of the valve stem is formed as a non-circular driving part, and the upper surface of the valve core is provided with a driving groove matching the driving part, and the driving part extends into the driving groove. The valve stem is provided with a step surface below the through hole, and the step surface abuts against the bottom of the cover body.

4. The multi-channel ball valve according to claim 1, characterized in that: It also includes pipe joints installed on the diversion channel from the outside, the number of the pipe joints corresponds to the number of the diversion channels, the end of the pipe joint extends into the valve body chamber and is sealed with the valve core.

5. The multi-channel ball valve according to claim 4, characterized in that: The end face of the pipe joint is formed with an inwardly concave step, and a second sealing component is partially embedded in the step axially.

6. The multi-channel ball valve according to claim 4 or 5, characterized in that: A support component is arranged at an area of ​​the inner side of the valve body opposite to the concentrated area of ​​the pipe joint.

7. The multi-channel ball valve according to claim 6, characterized in that: An embedding groove is formed in an area on the inner side of the valve body opposite to the concentrated area of ​​the pipe joint, and the supporting component is embedded in the embedding groove.

8. The multi-channel ball valve according to claim 7, characterized in that: The supporting component is annular, the embedding groove is a suitable embedding groove, and the supporting component is embedded in the embedding groove.

9. The multi-channel ball valve according to claim 1, characterized in that: The bottom surface of the valve core is formed as a pivot groove, and the inner bottom of the valve body is provided with a pivot extending into the pivot groove, so that the valve core can rotate around the axis of the pivot.

10. The multi-channel ball valve according to claim 9, characterized in that: The pivot groove and the pivot are both annular, and the first flow channel opening is located at the inner periphery of the pivot groove.

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