Two-way valve based on cam structure
By introducing the two -way valve of the cam structure in the electromagnetic pipe valve, the problem of high power consumption and unable to manually control the existing electromagnetic pipe valve during a single stable state work, and realized the control of low power consumption and manual electric compatibility. The method meets the improvement of the system redundancy in the application field.
Patent Information
- Application Number
- CN202411559622.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-01-24
AI Technical Summary
The existing solenoid valve can only work in a single-stable state, and it consumes a high power consumption when it is non-stable state, and cannot be manually controlled, which cannot meet the requirements for increasing system redundancy in some application fields.
The two -way valve based on the cam structure is adopted, and the cam structure with a central axis in the valve core is set up in the valve core, and connected to the manual controller and the electric controller. Open, it can control both manually and electric control.
It is realized that it is only necessary to do it when the valve state is converted only when the electric control state is converted. The power consumption is low. At the same time, it has a manual control function to meet the improvement of the system redundant.
Smart Images
Figure CN119353441A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of two-way valves, and in particular to a two-way valve based on a cam structure. Background Art
[0002] Ordinary valve fluids need to flow through the valve core, which is insufficient in application scenarios where corrosive fluids pass through or where the valves have biocompatibility and biosafety requirements.
[0003] In the field of fluids, there is an electromagnetic pinch valve that drives an electric push rod through an electromagnetic solenoid, and controls opening and closing by squeezing or loosening a hose. The medium only passes through the hose, and other parts in the valve body will not contact the medium, and there is no cross contamination. However, in this solution, the valve core works in a monostable state, that is, it can only be normally open or normally closed. When it is in a non-steady state, it requires a large maintenance power, which is accompanied by heat generation, reduced life and higher energy consumption. For low-power and long-life applications, a new structure is needed that can retain the advantages of the pinch-off valve and solve the shortcomings of the existing technology.
[0004] At the same time, the current electromagnetic pinch valve structure can only be controlled electrically. In some application fields, in order to improve the redundancy of the system, the valve needs to be controlled manually and electrically at the same time. However, since the existing electromagnetic pinch valve structure is monostable, it cannot meet this requirement. Summary of the invention
[0005] The purpose of the present invention is to provide a two-way valve based on a cam structure to solve the problem that the electromagnetic pinch valve can only work in a monostable state, has high power consumption when working in an unstable state, and cannot be manually controlled.
[0006] The present invention is implemented by adopting the following technical scheme: a two-way valve based on a cam structure, including a valve core, a manual controller and an electric controller, wherein a cam structure with a central axis is arranged in the valve core, and the cam structure is connected to the manual controller and the electric controller respectively. The manual controller and the electric controller drive the cam structure to rotate through the central axis, and cooperate with the steady-state limit point on the cam structure to realize the closing or opening of the hose.
[0007] Furthermore, the valve core also includes a front cover and a rear cover, the cam structure is arranged between the front cover and the rear cover, a front cover bearing is arranged between the cam structure and the front cover, and a rear cover bearing is arranged between the cam structure and the rear cover.
[0008] Furthermore, the cam structure includes a cam, the front center of which has a first concave-convex matching structure connected to the manual controller, a first rotation guide groove structure connected to the manual controller is arranged in the first concave-convex matching structure, and the main body of the cam has a first rotation limiting structure and a second rotation limiting structure limited by the front cover structure.
[0009] Furthermore, the rear center of the cam has a second concave-convex matching structure connected to the electric controller, the rear outer edge of the cam has a second rotating guide groove structure matching with the rear cover, the front outer edge of the cam has an elliptical arc structure of a compression pipe, and the middle of the cam has a screw hole, which extends to the second concave-convex matching structure connected to the electric controller, and the upper part of the cam is also provided with a first shaft body structure connected to the front cover bearing, a first stepped shaft structure that limits the outer ring of the front cover bearing, and the lower part of the cam is provided with a second shaft body structure connected to the rear cover bearing, and a second stepped shaft structure that limits the outer ring of the front cover bearing.
[0010] Furthermore, the front part of the front cover has a first guide groove structure connected to the manual controller and for the manual controller to rotate and limit the position of the outer ring of the front cover bearing, and the front part of the front cover has a groove structure for placing and fixing the hose.
[0011] Furthermore, the rear of the front cover has a second guide groove structure for cooperating with the rotation of the cam, the rear of the front cover also has a first limiting structure and a second limiting structure for limiting the cam, and the rear of the front cover also has a fixing structure for fixing with the rear cover.
[0012] Furthermore, the rear cover has a third guide groove structure that cooperates with the rear part of the cam, the rear cover also has a fixing piece that is fixed to the electric controller, and the rear cover also has a connecting structure that is connected to the front cover.
[0013] Furthermore, the manual controller is directly fixed to the rotating first guide groove structure of the front cover through a snap-fit structure, and is connected to the first concave-convex matching structure on the cam through a concave-convex matching piece.
[0014] Furthermore, the electric controller is controlled by a closed-loop motor. When powered on, the motor is controlled to rotate so that the cam touches the limit point, and the position of the limit point is obtained and memorized. In subsequent use, the electric control function can be realized by only controlling the closed-loop motor to move to the limit point.
[0015] Furthermore, the electric controller is controlled by an open-loop motor plus state sensing, and the state sensing method includes photoelectric detection, magnetic detection or switch detection. When the state sensing confirms that the cam touches the limit point, the open-loop motor is stopped, thereby realizing the electric control function.
[0016] The beneficial effects of the present invention are that the present invention can be controlled both manually and electrically, and in the electrically controlled state, the system needs to do work only when the valve changes state, and the power consumption is low. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is an exploded view of the present invention; Figure 3 Cam structure diagram Figure 1 ; Figure 4 Cam structure diagram Figure 2 ; Figure 5 It is the front view of the front cover; Figure 6 It is the rear view of the front cover; Figure 7 It is the front view of the back cover; Figure 8 This is the rear view of the back cover; Fig. 9 Manual controller structure diagram Figure 1 ; Fig.10 Manual controller structure diagram Figure 2 ; Fig.11 The valve core section Figure 1 ; Fig.12 The valve core section Figure 2 ; Fig.13 It is the block diagram of closed-loop control system; Fig.14 It is the block diagram of open loop control system; In the figure, 1-valve core, 101-cam, 1011-first concave-convex matching structure, 1012-first rotation guide groove structure, 1013-first rotation limiting structure, 1014-second rotation limiting structure, 1015-screw hole, 1016-second rotation guide groove structure, 1017-elliptical arc structure, 1018-first groove, 1019-second groove, 10110-first shaft structure, 10111-second shaft structure, 10112-first stepped shaft structure, 10113-second stepped shaft structure, 10114-second concave-convex matching structure, 102-front cover, 1021-first guide groove structure, 1 022-groove structure, 1023-second guide groove structure, 1024-first limiting structure, 1025-second limiting structure, 1026-fixing structure, 1027-front cover casing fixing structure, 103-rear cover, 1031-third guide groove structure, 1032-fixing piece, 1033-connecting structure, 1034-rear cover casing fixing structure, 1035-fourth guide groove structure, 104-front cover bearing, 1041-first limiting point, 1042-second limiting point, 105-rear cover bearing, 2-manual controller, 2001-snap structure, 2002-concave and convex fittings, 3-electric controller, 4-hose. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0021] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0022] See also Figure 1 , a two-way valve based on a cam structure, comprising a valve core 1, a manual controller 2 and an electric controller 3, see Figure 2 The valve core 1 includes a cam 101 , a front cover 102 , a rear cover 103 , a front cover bearing 104 and a rear cover bearing 105 .
[0023] See also Figure 3 and Figure 4The front center of the cam 101 has a first concave-convex matching structure 1011 connected to the manual controller 2. A first rotation guide groove structure 1012 connected to the manual controller 2 is arranged in the first concave-convex matching structure 1011 at the front of the cam 101. The first rotation guide groove structure 1012 is a threaded structure. The cam 101 body has a first rotation limiting structure 1013 and a second rotation limiting structure 1014 limited by the front cover 102 structure. Furthermore, the rear center of the cam 101 has a second concave-convex matching structure 10114 connected to the electric controller 3, the rear outer edge of the cam 101 has a second rotating guide groove structure 1016 that matches the rear cover 103, the front outer edge of the cam 101 has an elliptical arc structure 1017 for compressing the pipeline, and the middle of the cam 101 has a screw hole 1015 that extends to the second concave-convex matching structure 10114 connected to the electric controller 3 for further fixing the electric controller 3. The upper part of the cam 101 has a first shaft structure 10110 connected to the front cover bearing 104, a first stepped shaft structure 10112 that limits the outer ring of the front cover shaft 104, and the lower part of the cam 101 has a second shaft structure 10111 connected to the rear cover bearing 105, and a second stepped shaft structure 10113 that limits the outer ring of the front cover bearing 104.
[0024] See also Figure 5 and Figure 6 The front cover 102 has a first guide groove structure 1021 connected to the manual controller 2 and for the manual controller 2 to rotate and limit the position of the outer ring of the front cover bearing 104. The front cover 102 has a groove structure 1022 for placing and fixing the hose 4. The structure can limit the hose 4 along the insertion direction. The axial limit of the hose 4 is confirmed separately by the use structure. Further, the rear of the front cover 102 has a second guide groove structure 1023 that cooperates with the rotation of the cam 101. The rear of the front cover 102 also has a first limit structure 1024 and a second limit structure 1025 that limit the cam. The rear of the front cover 102 also has a fixing structure 1026 that is fixed to the rear cover 103. The rear of the front cover 102 also has a front cover and housing fixing structure 1027 that is fixed to the housing.
[0025] See also Figure 7 and Figure 8 The rear cover 103 has a third guide groove structure 1031 that cooperates with the rear part of the cam 101 and installs the rear cover bearing 105. The rear cover 103 has a fixing part 1032 with the electric controller 3. The rear cover 103 also has a connecting structure 1033 with the front cover. The rear cover 103 also has a rear cover casing fixing structure 1034 fixed to the casing. The rear cover 103 has a fourth guide groove structure 1035 for installing the rear cover bearing 105 and limiting the outer ring of the rear cover bearing 105.
[0026] It is conceivable that the mounting structure of the device may be designed according to a specific application and may be present on the front cover 102 , the rear cover 103 or the electric controller 3 .
[0027] See also Fig. 9 and Fig.10 The manual controller 2 can be directly fixed on the first concave-convex matching structure 1011 of the cam 101 through the buckle structure 2001, and is connected to the first concave-convex matching structure 1011 on the cam 101 through the concave-convex matching piece 2002.
[0028] The electric controller 3 can use a closed-loop stepper motor or a closed-loop servo motor in a closed-loop state, and can use an open-loop stepper motor or a DC motor in an open-loop state. Since this application is a low-speed and high-torque application, a reduction device can be provided on the electric controller to enhance the torque.
[0029] See also Fig.11 and Fig.12 When the valve is opened, the cam 101 rotates to the first limit point 1041. At this time, the cam 101 and the hose 4 therein are not connected, and the cam 101 is limited by the first limit structure 1024. When the valve is closed, the cam 101 rotates to the second limit point 1042. At this time, the cam squeezes and cuts off the hose 4. After reaching the limit point, the cam 101 is only subjected to the pressure from the hose 4. This pressure acts on the center of the cam 101 and will not affect the maintenance of the state of the cam 101. Therefore, it is a stable state at this time.
[0030] For further information, see Fig.13 When working in a closed-loop state, the electric controller 3 should include a motor, a motor driver, an encoder, and a main controller. Since the state of the motor and the position of the cam may not be recognized after power failure, it is necessary to calibrate the position of the cam without installing the hose 4 each time the power is turned on. The calibration method is to control the motor driver through the main controller to control the motor rotation to drive the cam to rotate, and read the encoder value in real time. When the motor is running but the encoder value does not change, the system believes that the limit point has been touched, and records the encoder value at this time, and runs the motor in the reverse direction to touch another limit point. At this time, the position information of the two limit points has been recorded in the main controller. Whether it is manual control or electric control, due to the existence of the encoder, the real-time position of the cam can be mapped in the main controller. When electric control is required, it is only necessary to control the motor operation according to the distance between the position and the target position.
[0031] For further information, see Fig.14If the electric controller 3 works in the open-loop mode, it is necessary to install a state sensor on the front cover 102 and the rear cover 103. The state sensing method includes a photoelectric detector, a magnetic detector or a switch-type detector. When using a magnetic detector (Hall sensor), it is necessary to Figure 3 , Figure 4 As shown, a first groove 1018 and a second groove 1019 are provided on the cam 101, and magnets are embedded in the grooves. When other detectors are used, the front cover 102 and the rear cover 103 also need to be adjusted accordingly.
[0032] The present invention connects the front manual controller 2 and the rear electric controller 3 through a cam 101 with a central axis, and the cam 101 can be controlled to rotate by the central axis. Two limit points are set on the valve structure to limit the movement position of the cam, wherein the first limit point 1041 is a normally open limit point, at which the cam 101 does not contact the hose, and the limit point is a steady-state limit point; the second limit point 1042 is a normally closed limit point, at which the cam 101 just squeezes and closes the hose, and the limit point is a steady-state limit point. Since both limit points of the valve are steady-state limit points, a combination of electric and manual control can be achieved, and in the electric control state, the system only needs to work when the valve is in state conversion. At the same time, the front cover and the rear cover are both equipped with bearings, which reduces the wear of the structure during operation and improves the stability during operation.
[0033] In addition, the present invention can use a closed-loop motor for direct control. When powered on, the motor is controlled to rotate so that the cam touches two limit points, and the position of the limit points is obtained and memorized. In subsequent use, it is only necessary to control the closed-loop motor to move to the limit points to realize the electric control function. It can also be controlled by an open-loop motor plus state sensing method. The state sensing method includes common methods such as photoelectric detectors, magnetic detectors, or switch-type detectors. When the state sensing confirms that the cam touches the limit point, the open-loop motor is stopped.
[0034] For the aforementioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily required by the present application.
[0035] The above embodiments describe the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the changes and modifications made by those skilled in the art shall be within the scope of protection of the appended claims of the present invention without departing from the spirit and scope of the present invention.
Claims
1. A two-way valve based on a cam structure, characterized in that: The invention comprises a valve core (1), a manual controller (2) and an electric controller (3), wherein a cam structure with a central axis is arranged in the valve core (1), and the cam structure is connected to the manual controller (2) and the electric controller (3) respectively; the manual controller (2) and the electric controller (3) drive the cam structure to rotate via the central axis, and cooperate with a steady-state limit point on the cam structure to realize closing or opening of a hose (4).
2. A two-way valve based on a cam structure as claimed in claim 1, characterized in that: The valve core (1) further comprises a front cover (102) and a rear cover (103); the cam structure is arranged between the front cover (102) and the rear cover (103); a front cover bearing (104) is arranged between the cam structure and the front cover (102); and a rear cover bearing (105) is arranged between the cam structure and the rear cover (103).
3. A two-way valve based on a cam structure as claimed in claim 2, characterized in that: The cam structure comprises a cam (101); the front centre of the cam (101) comprises a first concave-convex matching structure (1011) connected to the manual controller (2); a first rotation guide groove structure (1012) connected to the manual controller (2) is arranged in the first concave-convex matching structure (1011); and the main body of the cam (101) comprises a first rotation limiting structure (1013) and a second rotation limiting structure (1014) limited by the structure of the front cover (102).
4. A two-way valve based on a cam structure as claimed in claim 3, characterized in that: The rear center of the cam (101) has a second concave-convex matching structure (10114) connected to the electric controller (3); the rear outer edge of the cam (101) has a second rotating guide groove structure (1016) matched to the rear cover (103); the front outer edge of the cam (101) has an elliptical arc structure (1017) of a compression pipe; the middle of the cam (101) has a screw hole (1015), and the screw hole (1015) extends to the second concave-convex matching structure (10114) connected to the electric controller (3); the upper part of the cam (101) is also provided with a first shaft structure (10110) connected to the front cover bearing (104), and a first stepped shaft structure (10112) limiting the outer ring of the front cover bearing (104); the lower part of the cam (101) is provided with a second shaft structure (10111) connected to the rear cover bearing (105), and a second stepped shaft structure (10113) limiting the outer ring of the front cover bearing (105).
5. A two-way valve based on a cam structure as claimed in claim 4, characterized in that: The front part of the front cover (102) has a first guide groove structure (1021) connected to the manual controller (2) and allowing the manual controller (2) to rotate and limit the position of the outer ring of the front cover bearing (104), and the front part of the front cover (102) has a groove structure (1022) for placing and fixing the hose (4).
6. A two-way valve based on a cam structure as claimed in claim 5, characterized in that: The rear portion of the front cover (102) has a second guide groove structure (1023) for cooperating with the cam (101) to rotate, the rear portion of the front cover (102) also has a first limiting structure (1024) and a second limiting structure (1025) for limiting the cam (101), and the rear portion of the front cover (102) also has a fixing structure (1026) for fixing to the rear cover (103).
7. A two-way valve based on a cam structure as claimed in claim 6, characterized in that: The rear cover (103) has a third guide groove structure (1031) that cooperates with the rear part of the cam (101), the rear cover (103) also has a fixing member (1032) that is fixed to the electric controller (3), and the rear cover (103) also has a connection structure (1033) that is connected to the front cover (102).
8. A two-way valve based on a cam structure as claimed in claim 7, characterized in that: The manual controller (2) is directly fixed to the rotating first guide groove structure (1021) of the front cover (102) via a buckle structure (2001), and is connected to the first concave-convex matching structure (1011) on the cam (101) via a concave-convex matching piece (2002).
9. A two-way valve based on a cam structure according to any one of claims 1 to 8, characterized in that: The electric controller (3) is controlled by a closed-loop motor. When powered on, the motor is controlled to rotate so that the cam (101) touches the limit point, and the position of the limit point is obtained and memorized. In subsequent use, the electric control function can be realized by only controlling the closed-loop motor to move to the limit point.
10. A two-way valve based on a cam structure according to any one of claims 1 to 8, characterized in that: The electric controller (3) is controlled by an open-loop motor plus state sensing, wherein the state sensing method includes photoelectric detection, magnetic detection or switch detection. When the state sensing confirms that the cam (101) touches the limit point, the operation of the open-loop motor is stopped, thereby realizing the electric control function.