Valve element structure of multi-way valve phase

Abstract

The utility model provides a multi-way valve phase valve core structure, which belongs to the technical field of manufacturing industry, and comprises an upper shell, a one-way rotating shaft, an upper valve core, a lower valve core, a lower shell and a stepping motor, the lower surface of the upper valve element is meshed with the upper surface of the lower valve element, and the upper valve element is driven by the lower valve element to rotate. The upper shell and the lower shell cover the outer part of a structure formed by the upper valve core and the lower valve core; the utility model provides a multi-way valve phase valve element structure which can solve the problems that a traditional valve element can only achieve the phase state of the valve element at a certain angle through forward and reverse rotation of the traditional valve element, a certain number of on-off state types can be combined with a valve body pipe opening, the state number is limited by space and pipe diameter, and large-scale switching cannot be achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the manufacturing technology field, more particularly, relate to a valve core structure of multi -way valve phase. BACKGROUND

[0002] Valve core is one of the very key components in valves, widely used in fluid control systems, playing a role in regulating flow, flow rate, flow direction and pressure. In traditional valve core structure, common types include simple mechanical valve core, slide valve, ball valve and butterfly valve, etc. Traditional valve core structure is usually composed of one or more valve bodies and valve cores. Valve core adjusts the flow of fluid by controlling the area of fluid passing through the valve port. In traditional valve core structure, valve core usually relies on external driving devices (such as manual, electric, pneumatic or hydraulic drive) to control its position, thereby controlling the flow of fluid. Although traditional valve core structure has been widely used in many applications, they have certain defects in precise control, adjustment flexibility and reliability, and the adjustment accuracy of traditional valve core is usually limited by mechanical structure, especially under the demand of high-precision flow control, traditional structure is often difficult to meet the requirements of precise control. For example, the flow control of ball valve and butterfly valve at low opening degree is not accurate enough, and there are obvious dead zone and hysteresis phenomenon. Traditional valve core structure relies on mechanical driving device, especially manual and pneumatic system, the response speed is slow, which is not suitable for occasions requiring rapid adjustment of flow. Mechanical driving structure is easily affected by external environment (such as temperature, humidity, corrosive fluid, etc.), which causes valve core wear or jam, thereby affecting the stability and reliability of the system.

[0003] Traditional valve core is a one-piece structure, which can only realize the valve core phase state at a certain angle by itself rotating forward and backward, and combine with the valve body pipe port to form a certain number of on-off state types, the number of states is limited by space and pipe diameter, which cannot realize large number of switching. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model provides a valve core structure of multi -way valve phase, which can solve the problem that traditional valve core can only realize the valve core phase state at a certain angle by itself rotating forward and backward, and combine with the valve body pipe port to form a certain number of on-off state types, the number of states is limited by space and pipe diameter, which cannot realize large number of switching.

[0005] The utility model is realized as follows:

[0006] The utility model provides a valve core structure of multi -way valve phase, wherein, including upper casing, one -way rotating shaft, upper valve core, lower valve core, lower casing and step motor, the upper valve core with lower valve core is split type structure, the lower surface of upper valve core with the upper surface of lower valve core interlock, for through lower valve core drive upper valve core rotation, the structure of upper valve core and lower valve core is covered with upper casing and lower casing outside, upper casing sets up in the outer wall position of upper valve core, lower casing sets up in the outer wall position of lower valve core, upper casing and lower casing form integral structure for the protection inside upper valve core and lower valve core, the inside of upper valve core and lower valve core is provided with one -way rotating shaft, one -way rotating shaft sets up in upper casing and lower casing inside and is connected through the output shaft of step motor of lower casing and lower casing bottom that stretches out lower casing by being close to the side of lower casing, and step motor is used for drive one -way rotating shaft rotation.

[0007] On the basis of the above technical scheme, the valve core structure of the multi-way valve phase can be further improved as follows:

[0008] Among them, the one-way rotating shaft is sequentially sleeved with an outer driven gear, an inner driven gear and a driving gear from top to bottom, the outer driven gear is used for controlling the lower valve core, and the inner driven gear is used for controlling the upper valve core; the inner driven gear and the outer driven gear are provided with meshing teeth, and the meshing teeth are used for driving the upper valve core (30) to rotate together with the lower valve core and change the phase thereof in the meshing state.

[0009] Further, the side walls of the upper casing and the lower casing each outwardly extend a connecting pipe.

[0010] Further, the connecting pipe is vertically arranged on the side walls of the upper casing and the lower casing.

[0011] Further, the upper valve core is smoothly arranged on a side surface position not engaged with the lower valve core, so as to reduce the friction force of the connecting plane of the upper valve core and the lower valve core.

[0012] Further, the upper valve core is provided with a one-way rotating ratchet structure on a side surface position not engaged with the lower valve core, cooperates with the upper casing, and is used for limiting the rotation direction of the upper valve core.

[0013] Further, the upper valve core and the lower valve core extend outside the valve core structure of the one-way rotating shaft, and an outer wall fixed tooth shaft sleeve is arranged to realize following rotation.

[0014] Further, the step motor is a double-shaft structure, matches the one-way rotating shaft, and is used for realizing single-motor control of double valve cores.

[0015] Compared with the prior art, the valve core structure of the multi-way valve phase provided by the utility model has the beneficial effects that:

[0016] The upper shell and the lower shell constitute the shell protection part of the valve core structure. They jointly wrap the lower valve core and the upper valve core, protect them from the influence of the external environment, and enhance the stability of the valve core structure. The upper shell is arranged at the outer wall position of the upper valve core, forms protection for the upper valve core, and provides support. The lower shell is arranged at the outer wall position of the lower valve core, and plays the same protection and support role for the lower valve core. The two are connected with the pipeline on the side wall through the extension connecting pipe, can be used for hydraulic or pneumatic control, and ensure the sealing property and stability of the whole structure.

[0017] The lower valve core and the upper valve core realize phase control through the meshing structure. The inside of the lower valve core is connected with the one-way rotating shaft, the one-way rotating shaft is driven by the output shaft of the stepping motor, and the phase of the valve core is controlled. The inner and outer driven gear cores are connected with each other through meshing teeth, and are driven to rotate according to the rotation of the lower valve core. The main function is to adjust the fluid passage configuration following the movement of the lower valve core, and ensure the control of flow and fluid direction. The two are meshed with each other through the meshing teeth arranged on the upper and lower surfaces, realize rotation synchronization, and change the phase. The design of the meshing teeth ensures the stable movement of the valve core and the accurate phase adjustment.

[0018] The one-way rotating shaft is rotated by driving of the stepping motor, drives the phase adjustment of the upper valve core and the lower valve core. The one-way rotating shaft arranged in the upper shell and the lower shell can control the rotation of the valve core. The stepping motor serves as a driving source, accurately controls the rotation of the one-way rotating shaft by controlling the rotation of the output shaft, and further realizes the adjustment of the valve core phase. The stepping motor is an electrically controlled precise adjusting device, can be adjusted with small steps and high precision, and ensures the accurate control of the valve core phase.

[0019] The side wall extension connecting pipe of the upper shell and the lower shell is used for connecting with the external pipeline, ensures the transmission of fluid between the valve cores, and simultaneously plays the role of enhancing the structural stability and sealing property.

[0020] In order to reduce the friction between the upper valve core and the lower valve core, especially in the non-meshing area, a smooth surface is designed. This helps to improve the smoothness of the valve core rotation, reduce energy loss, and reduce wear and tear, and improve the service life.

[0021] In order to avoid reverse rotation of the upper valve core, a one-way rotating ratchet structure is designed. The ratchet structure limits the rotation of the upper valve core in a specific direction through cooperation with the upper shell, prevents the system from appearing reverse rotation phenomenon.

[0022] The stepping motor adopts a double-shaft structure, and through matching with the one-way rotating shaft, the function of controlling two valve cores by one motor can be realized.

[0023] Through the above-mentioned meshing teeth, one-way rotating shaft, stepping motor and the like, the phase of the valve core can be accurately controlled, so that precise flow and direction adjustment can be realized.

[0024] Through reducing the friction, adopting the ratchet to limit the rotating direction, the double-shaft structure and the like, the stability of the system is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0026] Figure 1 It is a structural schematic view of a valve core structure of a multi-way valve phase;

[0027] Figure 2 It is a structural schematic view of meshing teeth;

[0028] Figure 3 It is a principle schematic view of a four-position three-way valve;

[0029] Figure 4 It is a structural schematic view of a driving gear, an inner and outer driven gear and an upper and lower valve core;

[0030] Figure 5 It is a structural schematic view of the meshing of the inner driven gear and the upper valve core;

[0031] Figure 6 It is a structural schematic view of a plane bearing between the upper and lower valve cores;

[0032] Figure 7 It is an explosion view of each component of the valve core structure in the third embodiment;

[0033] Figure 8 It is a structural schematic view of the upper and lower valve cores and a transmission assembly;

[0034] Figure 9 It is a structural schematic view of the upper valve core and the transmission assembly;

[0035] Figure 10An exploded view of the structure of the upper and lower valve cores in Example 4;

[0036] Figure 11 A schematic view of the internal structure of the column valve;

[0037] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0038] 10, upper housing; 20, one-way rotating shaft; 30, upper valve core; 40, lower valve core; 50, lower housing; 60, stepping motor. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.

[0040] As Figures 1-7 shown is a first embodiment of a valve core structure of a multi-way valve phase provided by the utility model, in the embodiment, including upper housing 10, one-way rotating shaft 20, upper valve core 30, lower valve core 40, lower housing 50 and stepping motor 60, upper valve core 30 and lower valve core 40 are split structure, the lower surface of upper valve core 30 and the upper surface of lower valve core 40 are mutually engaged, for rotating upper valve core 30 through lower valve core 40; the structure composed of upper valve core 30 and lower valve core 40 is externally covered by upper housing 10 and lower housing 50, upper housing 10 is arranged at the outer wall position of upper valve core 30, lower housing 50 is arranged at the outer wall position of lower valve core 40, upper housing 10 and lower housing 50 form an overall structure for protecting the internal upper valve core 30 and lower valve core 40; one-way rotating shaft 20 is arranged inside upper housing 10 and lower housing 50 and is connected with the output shaft of stepping motor 60 at the bottom of lower housing 50 by extending out of lower housing 50 from the side close to lower housing 50, stepping motor 60 is used to drive one-way rotating shaft 20 to rotate.

[0041] In the above technical scheme, the one-way rotating shaft 20 is sequentially sleeved with an outer driven gear, an inner driven gear and a driving gear from top to bottom, the outer driven gear is used to control lower valve core 40, the inner driven gear is used to control upper valve core 30; the inner driven gear and the outer driven gear are provided with meshing teeth, the meshing teeth are used to drive upper valve core 30 to rotate together with lower valve core 40 and change the phase thereof in the meshing state; the outer driven gear is meshingly arranged with lower valve core 40, and the driving gear is connected with the transmission shaft of the motor.

[0042] In the above technical scheme, the one-way rotating shaft 20 is sequentially sleeved with an outer driven gear, an inner driven gear and a driving gear from top to bottom, the outer driven gear is used to control lower valve core 40, the inner driven gear is used to control upper valve core 30; the inner driven gear and the outer driven gear are provided with meshing teeth, the meshing teeth are used to drive upper valve core 30 to rotate together with lower valve core 40 and change the phase thereof in the meshing state; the outer driven gear is meshingly arranged with lower valve core 40, and the driving gear is connected with the transmission shaft of the motor.

[0043] Further, in the above technical solution, the side walls of the upper shell 10 and the lower shell 50 are provided with a connecting pipe extending outward.

[0044] Further, in the above technical solution, the connecting pipe is arranged vertically to the side walls of the upper shell 10 and the lower shell 50.

[0045] Further, in the above technical solution, the upper valve core 30 is smoothly arranged on the side surface position not engaged with the lower valve core 40, for reducing the friction of the connecting plane of the upper valve core 30 and the lower valve core 40.

[0046] In the second embodiment of the valve core structure of the multi-way valve phase provided by the utility model, the upper valve core 30 and the lower valve core 40 are of split structure, the lower surface of the upper valve core 30 and the upper surface of the lower valve core 40 are engaged with each other for driving the upper valve core 30 to rotate through the lower valve core 40; the structure composed of the upper valve core 30 and the lower valve core 40 is covered by the upper shell 10 and the lower shell 50, the upper shell 10 is arranged at the outer wall position of the upper valve core 30, the lower shell 50 is arranged at the outer wall position of the lower valve core 40, the upper shell 10 and the lower shell 50 form an integral structure for protecting the internal upper valve core 30 and the lower valve core 40; the internal upper valve core 30 and the lower valve core 40 are provided with the one-way rotating shaft 20, the one-way rotating shaft 20 is arranged inside the upper shell 10 and the lower shell 50 and connected with the output shaft of the stepping motor 60 at the bottom of the lower shell 50 through the side close to the lower shell 50, the stepping motor 60 is used for driving the one-way rotating shaft 20 to rotate.

[0047] In the above technical solution, the one-way rotating shaft 20 is sequentially provided with an outer driven gear, an inner driven gear and a driving gear from top to bottom, the outer driven gear is used for controlling the lower valve core 40, the inner driven gear is used for controlling the upper valve core 30; the inner driven gear and the outer driven gear are provided with engaging teeth, the engaging teeth are used for driving the upper valve core 30 to rotate together with the lower valve core 40 and change the phase in the engaged state; the outer driven gear is arranged in engagement with the lower valve core 40, and the driving gear is connected with the transmission shaft of the motor.

[0048] In the above technical solution, the one-way rotating shaft 20 is sequentially provided with an outer driven gear, an inner driven gear and a driving gear from top to bottom, the outer driven gear is used for controlling the lower valve core 40, the inner driven gear is used for controlling the upper valve core 30; the inner driven gear and the outer driven gear are provided with engaging teeth, the engaging teeth are used for driving the upper valve core 30 to rotate together with the lower valve core 40 and change the phase in the engaged state; the outer driven gear is arranged in engagement with the lower valve core 40, and the driving gear is connected with the transmission shaft of the motor.

[0049] Further, in the above technical solution, the side walls of the upper shell 10 and the lower shell 50 are provided with a connecting pipe extending outward.

[0050] Furthermore, in the above technical solution, the connecting pipe is perpendicular to the side walls of the upper housing 10 and the lower housing 50.

[0051] Furthermore, in the above technical solution, the upper valve core 30 is provided with a unidirectional rotating ratchet structure on one side that does not mesh with the lower valve core 40, which cooperates with the upper housing 10 to limit the rotation direction of the upper valve core 30.

[0052] like Figures 8-10 As shown, in the third embodiment of the valve core structure for a multi-port valve phase provided by this utility model, it includes an upper housing 10, a one-way rotating shaft 20, an upper valve core 30, a lower valve core 40, a lower housing 50, and a stepper motor 60. The upper valve core 30 and the lower valve core 40 are separate structures, with the lower surface of the upper valve core 30 meshing with the upper surface of the lower valve core 40, used to drive the upper valve core 30 to rotate through the lower valve core 40. The structure composed of the upper valve core 30 and the lower valve core 40 is externally covered by the upper housing 10 and the lower housing 50. The upper housing 10 is disposed on... The upper valve core 30 is located on the outer wall of the upper valve core 30, and the lower housing 50 is located on the outer wall of the lower valve core 40. The upper housing 10 and the lower housing 50 form an integral structure to protect the upper valve core 30 and the lower valve core 40 inside. The upper valve core 30 and the lower valve core 40 are provided with a one-way rotating shaft 20. The one-way rotating shaft 20 is located inside the upper housing 10 and the lower housing 50 and extends out of the lower housing 50 near the side of the lower housing 50. It is connected to the output shaft of the stepper motor 60 at the bottom of the lower housing 50. The stepper motor 60 is used to drive the one-way rotating shaft 20 to rotate.

[0053] In the above technical solution, the unidirectional rotating shaft 20 is sequentially fitted with an outer driven gear, an inner driven gear, and a driving gear from top to bottom. The outer driven gear controls the lower valve core 40, and the inner driven gear controls the upper valve core 30. Both the inner and outer driven gears are provided with meshing teeth, which, in the meshing state, drive the upper valve core 30 to rotate together with the lower valve core 40 and change its phase. The outer driven gear meshes with the lower valve core 40, and the driving gear is connected to the drive shaft of the motor. The motor rotates bidirectionally, simultaneously driving the upper valve core. Only when the driving gear on the motor output shaft meshes with both the outer and inner driven gears does it drive the rotation of both the lower and upper valve cores.

[0054] The bottom of the lower valve core meshing teeth is provided with 1-3 lower valve core drive shaft sleeves, which are meshed and connected to each other, and their bottoms are connected to the output shaft of the motor.

[0055] Furthermore, in the above technical solution, connecting pipes extend outward from the side walls of both the upper housing 10 and the lower housing 50.

[0056] Furthermore, in the above technical solution, the connecting pipe is perpendicular to the side walls of the upper housing 10 and the lower housing 50.

[0057] Further, in the above technical solution, the upper valve core 30 and the lower valve core 40 extend the one-way rotating shaft 20 out of the outer wall of the valve core structure, and the outer wall fixed tooth shaft sleeve is used to realize the following rotation.

[0058] In the fourth embodiment of the valve core structure of the multi-way valve phase provided by the utility model, the upper valve core 30 and the lower valve core 40 are of a split structure, the lower surface of the upper valve core 30 and the upper surface of the lower valve core 40 are engaged with each other, and the upper valve core 30 is driven to rotate by the lower valve core 40; the outer part of the structure composed of the upper valve core 30 and the lower valve core 40 is covered by the upper shell 10 and the lower shell 50, the upper shell 10 is arranged at the outer wall position of the upper valve core 30, the lower shell 50 is arranged at the outer wall position of the lower valve core 40, and the upper shell 10 and the lower shell 50 form an integral structure for protecting the internal upper valve core 30 and lower valve core 40; the one-way rotating shaft 20 is arranged inside the upper shell 10 and the lower shell 50 and connected with the output shaft of the stepping motor 60 at the bottom of the lower shell 50 through the side close to the lower shell 50, and the stepping motor 60 is used to drive the one-way rotating shaft 20 to rotate.

[0059] In the above technical solution, the outer driven gear, the inner driven gear and the driving gear are sequentially arranged on the one-way rotating shaft 20 from top to bottom, the outer driven gear is used to control the lower valve core 40, the inner driven gear is used to control the upper valve core 30, the inner driven gear and the outer driven gear are provided with engagement teeth, the engagement teeth are used to drive the upper valve core 30 to rotate together with the lower valve core 40 and change the phase thereof in the engaged state, the outer driven gear is arranged in engagement with the lower valve core 40, and the driving gear is connected with the transmission shaft of the motor.

[0060] Further, in the above technical solution, the side walls of the upper shell 10 and the lower shell 50 are provided with the connecting pipes which extend outward.

[0061] Further, in the above technical solution, the connecting pipes are arranged perpendicularly to the side walls of the upper shell 10 and the lower shell 50.

[0062] Further, in the above technical solution, the stepping motor 60 is of a double-shaft structure and matched with the one-way rotating shaft 20, and is used to realize the control of the double valve cores by the single motor.

[0063] In the fifth embodiment of the valve core structure of the multi-way valve phase provided by the utility model, the valve core structure can also be a column valve structure, as shown in Figure 11 .

[0064] Specifically, the principle of the utility model is: when using, through the step motor 60 rotates the lower valve core 360 DEG in the ratchet direction to ensure the upper valve core tooth and the lower valve core tooth meshing, at this time the upper valve core is all in 0 DEG phase; rotate the step motor 60 in the ratchet direction, adjust to the phase angle α of the required upper valve core.At this time the upper valve core is all turned to the same phase angle. Rotate the step motor 60 in the reverse ratchet direction, adjust the phase angle of the lower valve core (adjusting amplitude is less than 360 DEG minus the angle occupied by meshing tooth) to the required phase angle β of the lower valve core.

[0065] Taking a four-position three-way valve as an example, a single four-position three-way valve core can realize four phase states on the three-way valve, and a double valve core structure can realize arbitrary combination of four states of the upper and lower valve cores, that is, 4x4=16 states. Also, a 16-position five-way valve (1 in 4 out, respectively controlling the arbitrary on-off state of the four outlets, including full on and full off) can be manufactured accordingly.

Claims

1. A spool structure of a multi-port valve phase, characterized by, The utility model relates to a valve, including upper casing (10), one -way rotating shaft (20), upper valve element (30), lower valve element (40), lower casing (50) and step motor (60), upper valve element (30) with lower valve element (40) is split type structure, the lower surface of upper valve element (30) and the upper surface of lower valve element (40) are mutually engaged, for by lower valve element (40) drive upper valve element (30) rotation, the structure of upper valve element (30) and lower valve element (40) is covered with upper casing (10) and lower casing (50) outside, upper casing (10) sets up in the outer wall position of upper valve element (30), lower casing (50) sets up in the outer wall position of lower valve element (40), upper casing (10) and lower casing (50) form integral structure for the protection inside upper valve element (30) and lower valve element (40), the inside of upper valve element (30) and lower valve element (40) is provided with one -way rotating shaft (20), one -way rotating shaft (20) sets up in upper casing (10) and lower casing (50) inside and is connected with the output shaft of step motor (60) at lower casing (50) bottom by the side close to lower casing (50) stretches out lower casing (50), step motor (60) is used for drive one -way rotating shaft (20) rotation.

2. A spool structure for a multi-port valve phase according to claim 1, characterized in that One -way rotating shaft (20) is successively set with outer driven gear, inner driven gear and driving gear from top to bottom, outer driven gear is used for control lower valve element (40), inner driven gear is used for control upper valve element (30), the engagement tooth is used for drive upper valve element (30) follow lower valve element (40) rotation and change its phase under the engagement state on outer driven gear and inner driven gear.

3. A spool structure for a multi-port valve phase according to claim 2, wherein The side wall of upper casing (10) and lower casing (50) extends outwardly with a connecting pipe.

4. A spool structure for a multi-port valve phase according to claim 3, wherein The connecting pipe is vertically arranged with the side wall of upper casing (10) and lower casing (50).

5. A spool structure for a multi-port valve phase according to claim 4, wherein The upper valve element (30) is smoothly arranged on the side surface position not engaged with the lower valve element (40), for reducing the friction force of the connection plane of the upper valve element (30) and the lower valve element (40).

6. A spool structure for a multi-port valve phase according to claim 5, wherein The upper valve element (30) is provided with a one-way rotating ratchet structure on the side surface position not engaged with the lower valve element (40), matched with the upper casing (10), for limiting the rotation direction of the upper valve element (30).

7. A spool structure for a multi-port valve phase according to claim 6, wherein The upper valve element (30) and the lower valve element (40) extend outside the valve element structure of the one-way rotating shaft (20) and are fixed with a tooth shaft sleeve to realize rotation.

8. A spool structure for a multi-port valve phase according to claim 7, wherein The step motor (60) is a double-shaft structure, matched with the one-way rotating shaft (20), for realizing single-motor control of double valve elements.

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