Valve element structure of multi-way valve phase

Abstract

The invention provides a valve element structure of a multi-way valve phase, and belongs to the technical field of the manufacturing industry, the valve element structure of the multi-way valve phase comprises an upper shell, a one-way rotating shaft, an upper valve element, a lower valve element, a lower shell and a stepping motor, the upper valve element and the lower valve element are of a split type structure, 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 invention provides a multi-way valve phase valve element structure which can solve the problems that a traditional valve element can only achieve a valve element phase state 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 present invention belongs to the technical field of manufacturing industry, and in particular, relates to a phase valve core structure of a multi-way valve. Background Art

[0002] The valve core is one of the most critical components in the valve. It is widely used in fluid control systems and plays a role in regulating flow, flow rate, flow direction and pressure. In the traditional valve core structure, common types include simple mechanical valve cores, sliding valves, ball valves and butterfly valves. The traditional valve core structure is usually composed of one or more valve bodies and valve cores. The valve core regulates the flow of fluid by controlling the area of ​​the fluid passing through the valve port. In the traditional valve core structure, the valve core usually relies on an external drive device (such as manual, electric, pneumatic or hydraulic drive) to control its position, thereby controlling the flow of fluid. Although the traditional valve core structure has been widely used in many applications, they have certain defects in terms of precise control, adjustment flexibility and reliability. The adjustment accuracy of the traditional valve core is usually limited by the mechanical structure. Especially under the demand for high-precision flow control, the traditional structure is often difficult to meet the requirements of precision control. For example, the flow control of ball valves and butterfly valves at lower openings is not accurate enough, and there are obvious dead zones and hysteresis phenomena. The traditional valve core structure relies on mechanical drive devices, especially manual and pneumatic systems, which have a slow response speed and are not suitable for occasions where rapid flow adjustment is required. Mechanical drive structures are easily affected by the external environment (such as temperature, humidity, corrosive fluids, etc.), causing valve core wear or sticking, which in turn affects the stability and reliability of the system.

[0003] The traditional valve core is an integrated structure, which can only realize the phase state of the valve core at a certain angle by rotating forward and backward. It is combined with the valve body pipe mouth to form a certain number of on-off state types. The number of states is limited by space and pipe diameter, and a large number of switches cannot be achieved. Summary of the invention

[0004] In view of this, the present invention provides a multi-way valve phase valve core structure, which can solve the problem that the traditional valve core can only realize the valve core phase state at a certain angle by rotating forward and backward on its own, and can be combined with the valve body pipe mouth to form a certain number of on-off state types, and the number of states is limited by space and pipe diameter, and a large number of switching cannot be achieved.

[0005] The present invention is achieved in that: The present invention provides a valve core structure of a multi-way valve phase, which includes an upper shell, a one-way rotating shaft, an upper valve core, a lower valve core, a lower shell and a stepper motor, the upper valve core and the lower valve core are split structures, the lower surface of the upper valve core and the upper surface of the lower valve core are meshed with each other, and are used to drive the upper valve core to rotate through the lower valve core; the outer part of the structure composed of the upper valve core and the lower valve core is covered with the upper shell and the lower shell, the upper shell is arranged at the outer wall position of the upper valve core, and the lower shell is arranged at the outer wall position of the lower valve core, and the upper shell and the lower shell form an integral structure for protecting the upper valve core and the lower valve core inside; the one-way rotating shaft is arranged inside the upper valve core and the lower valve core, the one-way rotating shaft is arranged inside the upper shell and the lower shell and extends out of the lower shell through a side close to the lower shell and is connected to the output shaft of the stepper motor at the bottom of the lower shell, and the stepper motor is used to drive the one-way rotating shaft to rotate.

[0006] On the basis of the above technical solution, the valve core structure of a multi-way valve phase of the present invention can also be improved as follows: The one-way rotating shaft is provided with an outer driven gear, an inner driven gear and a driving gear in sequence from top to bottom, the outer driven gear is used to control the lower valve core, and the inner driven gear is used to control the upper valve core; the inner driven gear and the outer driven gear are provided with meshing teeth, and the meshing teeth are used to drive the upper valve core (30) to rotate with the lower valve core and change its phase in a meshing state.

[0007] Furthermore, connecting pipes are extended outwardly from the side walls of the upper shell and the lower shell.

[0008] Furthermore, the connecting pipe is arranged perpendicularly to the side walls of the upper shell and the lower shell.

[0009] Furthermore, the upper valve core is smoothly arranged at a side position that is not engaged with the lower valve core, so as to reduce the friction force of the connection plane between the upper valve core and the lower valve core.

[0010] Furthermore, a unidirectionally rotatable ratchet structure is provided on a side surface of the upper valve core that is not meshed with the lower valve core, and cooperates with the upper housing to limit the rotation direction of the upper valve core.

[0011] Furthermore, the upper valve core and the lower valve core extend the one-way rotating shaft out of the valve core structure, and the outer wall fixes the gear shaft sleeve to achieve follow-up rotation.

[0012] Furthermore, the stepper motor is a dual-axis structure, matched with the unidirectional rotating shaft, and is used to realize single-motor control of dual valve cores.

[0013] Compared with the prior art, the beneficial effects of the valve core structure of a multi-way valve phase provided by the present invention are: The upper shell and the lower shell constitute the outer shell protection part of the valve core structure. They wrap the lower valve core and the upper valve core together, protecting them from the external environment and enhancing the stability of the valve core structure. The upper shell is set on the outer wall of the upper valve core to protect and support the upper valve core. The lower shell is set on the outer wall of the lower valve core, and plays the same role of protecting and supporting the lower valve core. The two are connected to the pipeline on the side wall through an extended connecting pipe, which may be used for hydraulic or pneumatic pressure control to ensure the sealing and stability of the entire structure.

[0014] The lower valve core and the upper valve core achieve phase control through the meshing structure. The interior of the lower valve core is connected to the one-way shaft, which is driven by the output shaft of the stepper motor to control the phase of the valve core. The inner and outer driven gear cores are connected to each other through meshing teeth and drive themselves to rotate according to the rotation of the lower valve core. Its main function is to follow the movement of the lower valve core to adjust the channel configuration of the fluid to ensure the control of the flow rate and fluid direction. The two mesh with each other through the meshing teeth set on the upper and lower surfaces to achieve rotation synchronization and change their phase. The design of the meshing teeth ensures the stable movement of the valve core and accurate phase adjustment.

[0015] The one-way shaft is driven by a stepper motor to rotate, driving the phase adjustment of the upper and lower valve cores. The rotation of the valve core can be controlled by the one-way shaft set in the upper and lower housings. The stepper motor, as a driving source, controls the rotation of the one-way shaft by controlling the rotation of the output shaft, and further adjusts the phase of the valve core. The stepper motor is an electronically controlled precision adjustment device that can perform high-precision adjustments with small steps to ensure accurate control of the valve core phase.

[0016] The side walls of the upper shell and the lower shell extend with connecting pipes for connecting with external pipelines to ensure the transmission of fluid between the valve cores and at the same time enhance the structural stability and sealing.

[0017] In order to reduce the friction between the upper and lower valve cores, 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, reduce wear and increase service life.

[0018] In order to prevent the upper valve core from rotating in the opposite direction, a one-way rotating ratchet structure is designed. The ratchet structure cooperates with the upper valve core to limit the upper valve core to rotate in a specific direction, preventing the system from reversing.

[0019] The stepper motor adopts a dual-axis structure, and by matching with a unidirectional rotating shaft, it can realize the function of a single motor controlling two valve cores. This means that under the control of one motor, the two valve cores can adjust the phase synchronously, thereby reducing the complexity of the system and improving efficiency.

[0020] Through the above-mentioned designs of meshing teeth, one-way rotating shaft, stepper motor, etc., the phase of the valve core can be accurately controlled, thereby achieving precise flow and direction adjustment.

[0021] The stability of the system has been significantly improved by reducing friction, using ratchet to limit the rotation direction, and adopting a dual-axis structure. At the same time, the shell protection and connecting pipe design of the valve core structure also effectively prevent the external environment from damaging the valve core and extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0023] Figure 1 It is a structural schematic diagram of a valve core structure of a multi-way valve phase; Figure 2 It is a schematic diagram of the structure of meshing teeth; Figure 3 It is the principle schematic diagram of the four-position three-way valve; Figure 4 It is a structural schematic diagram of the driving gear, the inner and outer driven gears and the upper and lower valve cores; Figure 5 It is a schematic diagram of the structure in which the inner driven gear is meshed with the upper valve core; Figure 6 It is a structural schematic diagram of the plane bearing between the upper and lower valve cores; Figure 7 An exploded view of each component of the valve core structure in Embodiment 3; Figure 8 It is a structural schematic diagram of the upper and lower valve cores and the transmission components; Fig. 9 It is a structural schematic diagram of the upper valve core and the transmission assembly; Fig.10 It is a structural explosion diagram of the upper and lower valve cores in the fourth embodiment; Fig.11 Schematic diagram of the internal structure of the column valve; In the accompanying drawings, the components represented by the reference numerals are listed as follows: 10. Upper housing; 20. One-way rotating shaft; 30. Upper valve core; 40. Lower valve core; 50. Lower housing; 60. Stepper motor. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] like Figure 1-7 As shown, it is a first embodiment of a multi-way valve phase valve core structure provided by the present invention. In this embodiment, it includes an upper shell 10, a one-way rotating shaft 20, an upper valve core 30, a lower valve core 40, a lower shell 50 and a stepping motor 60. The upper valve core 30 and the lower valve core 40 are split structures. The lower surface of the upper valve core 30 and the upper surface of the lower valve core 40 are meshed with each other, and are used to drive the upper valve core 30 to rotate through 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 with an upper shell 10 and a lower shell 50. The upper shell 10 The upper shell 10 and the lower shell 50 are arranged on the outer wall of the upper valve core 30, and the lower shell 50 is arranged on the outer wall of the lower valve core 40. The upper shell 10 and the lower shell 50 form an integral structure for protecting the upper valve core 30 and the lower valve core 40 inside. A one-way rotating shaft 20 is arranged inside the upper valve core 30 and the lower valve core 40. The one-way rotating shaft 20 is arranged inside the upper shell 10 and the lower shell 50 and extends out of the lower shell 50 through a side close to the lower shell 50 and is connected to the output shaft of the stepper motor 60 at the bottom of the lower shell 50. The stepper motor 60 is used to drive the one-way rotating shaft 20 to rotate.

[0026] Among them, in the above technical solution, 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 the lower valve core 40, and 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 meshing teeth, and the meshing teeth are used to drive the upper valve core 30 to rotate together with the lower valve core 40 and change its phase in the meshing state; the outer driven gear is meshed with the lower valve core 40, and the driving gear is connected to the transmission shaft of the motor.

[0027] The motor rotates in both directions and drives the upper valve core at the same time. Only when the driving gear on the motor output shaft is meshed with the outer and inner driven gears, the lower valve core and the upper valve core are driven to rotate.

[0028] Furthermore, in the above technical solution, connecting pipes are extended outwardly from the side walls of the upper shell 10 and the lower shell 50 .

[0029] Furthermore, in the above technical solution, the connecting pipe is vertically arranged to the side walls of the upper shell 10 and the lower shell 50 .

[0030] Furthermore, in the above technical solution, the upper valve core 30 is smoothly arranged at a side position that is not engaged with the lower valve core 40 , so as to reduce the friction force of the connection plane between the upper valve core 30 and the lower valve core 40 .

[0031] In a second embodiment of a multi-way valve phase valve core structure provided by the present invention, the upper shell 10, a one-way rotating shaft 20, an upper valve core 30, a lower valve core 40, a lower shell 50 and a stepping motor 60 are included. The upper valve core 30 and the lower valve core 40 are split structures. The lower surface of the upper valve core 30 and the upper surface of the lower valve core 40 are meshed with each other, and are used to drive the upper valve core 30 to rotate through 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 with an upper shell 10 and a lower shell 50. The upper shell 10 is arranged on the upper valve core 30. The lower shell 50 is arranged at the outer wall position of the core 30, and the upper shell 10 and the lower shell 50 are 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 upper valve core 30 and the lower valve core 40 inside; a one-way rotating shaft 20 is arranged inside the upper valve core 30 and the lower valve core 40, and the one-way rotating shaft 20 is arranged inside the upper shell 10 and the lower shell 50 and extends out of the lower shell 50 through a side close to the lower shell 50 and is connected to the output shaft of the stepper motor 60 at the bottom of the lower shell 50, and the stepper motor 60 is used to drive the one-way rotating shaft 20 to rotate.

[0032] Among them, in the above technical solution, 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 the lower valve core 40, and 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 meshing teeth, and the meshing teeth are used to drive the upper valve core 30 to rotate together with the lower valve core 40 and change its phase in the meshing state; the outer driven gear is meshed with the lower valve core 40, and the driving gear is connected to the transmission shaft of the motor.

[0033] The motor rotates in both directions and drives the upper valve core at the same time. Only when the driving gear on the motor output shaft is meshed with the outer and inner driven gears, the lower valve core and the upper valve core are driven to rotate.

[0034] Furthermore, in the above technical solution, connecting pipes are extended outwardly from the side walls of the upper shell 10 and the lower shell 50 .

[0035] Furthermore, in the above technical solution, the connecting pipe is vertically arranged to the side walls of the upper shell 10 and the lower shell 50 .

[0036] Furthermore, in the above technical solution, a one-way rotating ratchet structure is provided on a side surface of the upper valve core 30 that is not engaged with the lower valve core 40 , and cooperates with the upper housing 10 to limit the rotation direction of the upper valve core 30 .

[0037] like Figure 8-10As shown, in a third embodiment of a multi-way valve phase valve core structure provided by the present invention, the upper shell 10, a one-way rotating shaft 20, an upper valve core 30, a lower valve core 40, a lower shell 50 and a stepping motor 60 are included. The upper valve core 30 and the lower valve core 40 are split structures. The lower surface of the upper valve core 30 and the upper surface of the lower valve core 40 are meshed with each other, and are 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 coated with the upper shell 10 and the lower shell 50 on the outside. The upper shell 10 is arranged on the upper shell 10. The lower shell 50 is arranged at the outer wall position of the valve core 30, and the upper shell 10 and the lower shell 50 form an integral structure for protecting the upper valve core 30 and the lower valve core 40 inside; a one-way rotating shaft 20 is arranged inside the upper valve core 30 and the lower valve core 40, and the one-way rotating shaft 20 is arranged inside the upper shell 10 and the lower shell 50 and extends out of the lower shell 50 through a side close to the lower shell 50 and is connected to the output shaft of the stepper motor 60 at the bottom of the lower shell 50, and the stepper motor 60 is used to drive the one-way rotating shaft 20 to rotate.

[0038] Among them, in the above technical scheme, the one-way rotating shaft 20 is sleeved with an outer driven gear, an inner driven gear and a driving gear from top to bottom in sequence, the outer driven gear is used to control the lower valve core 40, and 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 meshing teeth, and the meshing teeth are used to drive the upper valve core 30 to rotate with the lower valve core 40 and change its phase in the meshing state; the outer driven gear is meshed with the lower valve core 40, and the driving gear is connected to the transmission shaft of the motor. Among them, the motor rotates in both directions and drives the upper valve core at the same time, and only when the driving gear on the motor output shaft is meshed with the outer and inner driven gears, the rotation of the lower valve core and the upper valve core is driven.

[0039] 1-3 lower valve core transmission shaft sleeves are arranged at the bottom of the lower valve core meshing teeth, adjacent transmission shaft sleeves are meshingly connected, and the bottoms thereof are connected to the output shaft of the motor.

[0040] Furthermore, in the above technical solution, connecting pipes are extended outwardly from the side walls of the upper shell 10 and the lower shell 50 .

[0041] Furthermore, in the above technical solution, the connecting pipe is vertically arranged to the side walls of the upper shell 10 and the lower shell 50 .

[0042] Furthermore, 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 valve core structure, and the outer wall fixes the gear shaft sleeve to achieve follow-up rotation.

[0043] In a fourth embodiment of a multi-way valve phase valve core structure provided by the present invention, the upper shell 10, a one-way rotating shaft 20, an upper valve core 30, a lower valve core 40, a lower shell 50 and a stepping motor 60 are included. The upper valve core 30 and the lower valve core 40 are split structures. The lower surface of the upper valve core 30 and the upper surface of the lower valve core 40 are meshed with each other, and are used to drive the upper valve core 30 to rotate through the lower valve core 40; the outer portion of the structure composed of the upper valve core 30 and the lower valve core 40 is covered with an upper shell 10 and a lower shell 50, and the upper shell 10 is arranged on the upper valve core 30. The lower shell 50 is arranged at the outer wall position of the core 30, and the upper shell 10 and the lower shell 50 are 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 upper valve core 30 and the lower valve core 40 inside; a one-way rotating shaft 20 is arranged inside the upper valve core 30 and the lower valve core 40, and the one-way rotating shaft 20 is arranged inside the upper shell 10 and the lower shell 50 and extends out of the lower shell 50 through a side close to the lower shell 50 and is connected to the output shaft of the stepper motor 60 at the bottom of the lower shell 50, and the stepper motor 60 is used to drive the one-way rotating shaft 20 to rotate.

[0044] Among them, in the above technical solution, 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 the lower valve core 40, and 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 meshing teeth, and the meshing teeth are used to drive the upper valve core 30 to rotate together with the lower valve core 40 and change its phase in the meshing state; the outer driven gear is meshed with the lower valve core 40, and the driving gear is connected to the transmission shaft of the motor.

[0045] Furthermore, in the above technical solution, connecting pipes are extended outwardly from the side walls of the upper shell 10 and the lower shell 50 .

[0046] Furthermore, in the above technical solution, the connecting pipe is vertically arranged to the side walls of the upper shell 10 and the lower shell 50 .

[0047] Furthermore, in the above technical solution, the stepper motor 60 is a dual-axis structure, matched with the unidirectional rotating shaft 20, and is used to realize single-motor control of dual valve cores.

[0048] In a fifth embodiment of a multi-way valve phase valve core structure provided by the present invention, the valve core structure can also be a column valve structure, such as Fig.11 shown.

[0049] Specifically, the principle of the present invention is: when in use, the stepper motor 60 is used to rotate the lower valve core 360° in the direction of the ratchet wheel to ensure that the upper valve core teeth are engaged with the lower valve core teeth, and at this time, the upper valve cores are all in a 0° phase; the stepper motor 60 is rotated in the direction of the ratchet wheel to adjust to the required phase angle α of the upper valve core. At this time, the upper valve cores are all rotated to the same phase angle. The stepper motor 60 is rotated in the opposite direction of the ratchet wheel to adjust the phase angle of the lower valve core (the adjustment range is less than 360° minus the angle occupied by the meshing teeth) to the required phase angle β of the lower valve core.

[0050] Taking a 4-position 3-way valve as an example, a single 4-position 3-way valve core can realize 4 phase states on the 3-way valve, and the double valve core structure can realize any combination of the 4 states of the upper and lower valve cores, that is, 4×4=16 states. A 16-position 5-way valve (1 inlet and 4 outlets, controlling any on / off state of the 4 outlets, including full on and full off) can also be manufactured based on this.

Claims

1. A multi-way valve phase valve core structure, characterized in that: The invention comprises an upper shell (10), a one-way rotating shaft (20), an upper valve core (30), a lower valve core (40), a lower shell (50) and a stepping motor (60); 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 meshed with each other, and are used to drive the upper valve core (30) to rotate through the lower valve core (40); the upper shell (10) and the lower shell (50) are coated on the outside of the structure composed of the upper valve core (30) and the lower valve core (40); the upper shell (10) is arranged on the outer wall of the upper valve core (30), and the lower shell (50) is arranged on the outer wall of the lower valve core (30). The upper shell (10) and the lower shell (50) are arranged on the outer wall of the lower valve core (40), and the upper shell (10) and the lower shell (50) form an integral structure for protecting the upper valve core (30) and the lower valve core (40) inside; the one-way rotating shaft (20) is arranged inside the upper shell (10) and the lower shell (50), and the one-way rotating shaft (20) is arranged inside the upper shell (10) and the lower shell (50) and extends out of the lower shell (50) through a side close to the lower shell (50) to be connected to the output shaft of the stepping motor (60) at the bottom of the lower shell (50), and the stepping motor (60) is used to drive the one-way rotating shaft (20) to rotate.

2. A multi-way valve phase valve core structure according to claim 1, characterized in that: The one-way rotating shaft (20) is sleeved with an outer driven gear, an inner driven gear and a driving gear in sequence from top to bottom, the outer driven gear is used to control the lower valve core (40), and 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 meshing teeth, and the meshing teeth are used to drive the upper valve core (30) to rotate along with the lower valve core (40) and change its phase in a meshing state.

3. A multi-way valve phase valve core structure according to claim 2, characterized in that: Connecting pipes are extended outwardly from the side walls of the upper shell (10) and the lower shell (50).

4. A multi-way valve phase valve core structure according to claim 3, characterized in that: The connecting pipe is arranged perpendicularly to the side walls of the upper shell (10) and the lower shell (50).

5. A multi-way valve phase valve core structure according to claim 4, characterized in that: The upper valve core (30) is smoothly arranged at a side position that is not engaged with the lower valve core (40), so as to reduce the friction force of the connection plane between the upper valve core (30) and the lower valve core (40).

6. A multi-way valve phase valve core structure according to claim 5, characterized in that: The upper valve core (30) is provided with a unidirectionally rotating ratchet structure at a side position not meshing with the lower valve core (40), which cooperates with the upper housing (10) and is used to limit the rotation direction of the upper valve core (30).

7. A multi-way valve phase valve core structure according to claim 6, characterized in that: The upper valve core (30) and the lower valve core (40) extend the one-way rotating shaft (20) out of the valve core structure, and the outer wall is fixed with a gear shaft sleeve to achieve follow-up rotation.

8. The multi-way valve phase valve core structure according to claim 7, characterized in that: The stepper motor (60) is a double-shaft structure, matched with the unidirectional rotating shaft (20), and is used to realize single-motor control of double valve cores.

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