CN217927437U

CN217927437U - Valve system for fluid control

Info

Publication number: CN217927437U
Application number: CN202222011938.6U
Authority: CN
Inventors: 甘泉龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2022-11-29
Anticipated expiration: 2032-08-01

Abstract

The utility model discloses a valve system for fluid control, which comprises a valve core, a valve rod fixedly connected with the valve core, and a driving device for driving the valve rod to rotate, wherein a transmission mechanism is arranged between the driving device and the valve rod; the valve rod switching device further comprises a forward and reverse switching device and a time relay, wherein the forward and reverse switching device is used for driving the valve rod to switch the rotating direction, and the time relay is used for controlling the starting duration of the driving device. The utility model provides a valve system for fluid control to it is shorter to solve prior art life, and the higher problem of fault rate realizes increase of service life, improves the purpose of stability in use.

Description

Valve system for fluid control

Technical Field

The utility model relates to a brake valve field, concretely relates to valve system for fluid control.

Background

In the field of vehicle driving, the applicant of the present application conducted a great deal of research in the early days and previously applied a series of patent technologies relying on fluid braking, and in these prior arts, a container is required to provide a corresponding fluid for a braking device or an anti-roll structure, for example, a fuel tank is used to supply fuel to the braking device or the anti-roll structure, and a valve is required to be arranged at an output end of the fuel tank. For the anti-tilting structure, the stopping function of the stopping mechanism can be realized by quickly closing the valve, so that the two-wheeled vehicle is prevented from tilting or toppling; for the braking device, not only complete braking is achieved by closing the valve, but also the degree of deceleration braking needs to be adjusted by adjusting the opening degree of the valve.

On the basis of the above, the applicant previously filed a "rapid angularly adjustable valve system" (CN 212377346U) which achieves the effects of being used for both a braking device and an anti-roll structure. However, in the process of intensive practice and research, the applicant finds that the control precision of the ball valve is lower and lower due to the serious cam angle drift and the obviously reduced sensing precision of the sensing device of the system under long-term use; and, since the cam is rotating at too high a speed, which tends to cause the valve to oscillate reciprocally around the opening/closing station, in order to overcome this phenomenon, the applicant tried to adopt two ways: the first is to make the cam rotate at a low speed, but the mode cannot realize the quick control of the valve and is not suitable for the structure; secondly, a self-locking mechanism is additionally arranged, but the structure is complex and the equipment is too bulky.

SUMMERY OF THE UTILITY MODEL

The utility model provides a valve system for fluid control to it is shorter to solve prior art life, and the higher problem of waiting of fault rate realizes increase of service life, improves the purpose of stability in use.

The utility model discloses a following technical scheme realizes:

a valve system for fluid control comprises a valve core, a valve rod fixedly connected with the valve core and a driving device for driving the valve rod to rotate, wherein a transmission mechanism is arranged between the driving device and the valve rod; the valve rod switching mechanism further comprises a forward and reverse switching device and a time relay, wherein the forward and reverse switching device is used for driving the valve rod to switch the rotating direction, and the time relay is used for controlling the starting duration of the driving device.

To prior art life shorter, the higher scheduling problem of fault rate, the utility model provides a case, valve rod and prior art unanimous for fluid control's valve system, this system, wherein the case is preferred the ball core. The driving mechanism provides power and drives the valve rod to rotate and the valve core to synchronously rotate through transmission of the transmission mechanism so as to open and close the valve. This application switches the rotation direction of valve rod through positive reverse switching device to this guarantees opening fast and the shutoff of case. This application is long through time relay control drive arrangement's start-up, and to ball valve case, it opens and turn-off only need rotate 90 can, and drive arrangement drives valve rod pivoted speed and can learn, and consequently this application is long through setting up time relay control drive arrangement's start-up, can control the valve rod and rotate the automatic stop of 90 backs. It can be seen that the time relay control mode is adopted in the application, the technical means that the cam and the induction device are matched to control in the prior art is abandoned, the defects that the cam angle drifts seriously and the precision of the induction device is reduced in the long-term use in the prior art are overcome, the service life is obviously prolonged, and the use stability is improved. In addition, compared with a control mode such as a servo motor, the control method has the advantage of relatively low cost. And this application has still been guaranteeing when moving rapidly, has overcome among the prior art because the reciprocal swing phenomenon of valve that the cam rotational speed leads to too fast.

Furthermore, the device also comprises an interaction device which is in signal connection with the forward and reverse rotation switching device and the time relay. The interaction device is preferably a button, a knob, a panel or a brake system which is convenient for a driver to operate.

When the anti-tilt valve is used for an anti-tilt structure, a driver sends a signal through the interaction device, the signal controls the driving device and the time relay to work until the set working duration of the time relay is reached, and the valve rod is driven to completely close the valve core; when the anti-tilting is not needed, a driver loosens or resets the interaction device, the signal of the interaction device disappears, the forward and reverse switching device switches the rotating direction of the valve rod at the moment, and meanwhile, the driving device and the time relay work until the set working duration of the time relay is reached, the valve rod is driven to completely open the valve core, and the resetting of the whole system is completed.

Furthermore, the forward and reverse rotation switching device and the time relay are connected in series on a power supply circuit of the driving device.

For those skilled in the art, switching the positive and negative rotation of the driving device by switching the positive and negative electrodes of the circuit belongs to a mature prior art, and controlling the on-time of the circuit by using the time relay is also a mature prior art and is not described herein.

Furthermore, the driving device is a motor, so that the forward and reverse rotation switching device can rapidly control the forward and reverse rotation of the output shaft of the controller.

Furthermore, the transmission mechanism comprises an output shaft fixedly connected with the valve rod, a driven part rotatably sleeved on the output shaft, a transmission part fixedly sleeved on the output shaft, and a driving part for driving the driven part to rotate; the driven part is connected with the transmission part in a matching way through a positioning pin; the driving piece is connected with the output end of the driving device; also includes a torsion spring connected to the follower.

The motor drives the driving part to move and drive the driven part matched with the driving part to rotate around the output shaft, the positioning pin drives the transmission part to rotate, and the transmission part drives the output shaft to rotate, so that the valve rod is driven to rotate.

The driving part is a gear, and the driven part is a 1/4 gear matched with the driving part.

The 1/4 gear described in this application, i.e. a gear with teeth around only 1/4 of its circumference, matches the 90 ° needed for opening and closing the valve. Through setting the driven part into 1/4 gear, make the driving part when rotating, the driven part only can rotate 90 to this has guaranteed that the valve rod only can rotate 90, has guaranteed the accuracy that the valve opened and close, has avoided the driving part to excessively rotate when inertia or control accuracy are not enough and lead to the problem that valve control accuracy reduces, is showing to have reduced the control accuracy requirement to drive arrangement, is favorable to reduce cost more.

One end of the torsion spring is connected with the driven part, the other end of the torsion spring is connected at any fixed position, the torsion spring is driven to deform along with the rotation of the driven part, so that the torsion spring always has a reset trend, the reset force acts on the driven part to drive teeth on the driven part to always have a trend of approaching and meshing towards the driving part, and therefore when the driven part needs to perform rotary motion, the driving part can immediately drive the driven part.

The transmission part is provided with a pin hole; one end of the positioning pin is fixed on the driven piece, and the other end of the positioning pin is in clearance fit with the pin hole. The pin hole is an arc-shaped hole coaxial with the driven piece, the arc length of the arc-shaped hole is larger than the outer diameter of the positioning pin, so that the positioning pin can make small displacement in the pin hole, the driven piece and the transmission piece can make small displacement relatively, and the displacement is used for ensuring that the driven piece is always close to the driving piece.

This scheme adopts exquisite drive mechanism to realize the transmission rather than directly adopting motor drive, and its reason lies in that usable this structure reduces the control accuracy requirement to the motor, reduces the time delay accuracy requirement to time relay promptly to guarantee life's purpose when reaching reduce cost.

Furthermore, the driven part is connected with the output shaft through a bearing or a shaft sleeve, so that the connection flexibility of the driven part is guaranteed, and the driven part is always close to the driving part under the action of the torsion spring.

Furthermore, the driving device and the transmission mechanism are both positioned in the shell. This scheme adopts the casing to accomodate drive arrangement, drive mechanism, can play pleasing to the eye function just protected.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model relates to a valve system for fluid control has abandoned the technical means that prior art carries out control through cam and induction system's cooperation, has solved prior art and has used down cam angle drift serious, induction system precision reduction scheduling defect for a long time, has obviously prolonged life, has improved the stability in use.

2. The utility model relates to a valve system for fluid control when guaranteeing that the valve is opened and close stably, has the advantage that the cost is lower relatively, and the ingenious structural design of accessible is with improving control accuracy to avoided using the high problem of cost that servo motor, PLC controller etc. brought.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

FIG. 2 is a partial top view of an embodiment of the present invention;

fig. 3 is an assembly schematic diagram of the transmission member and the positioning pin according to the embodiment of the present invention.

Reference numbers and corresponding part names in the drawings:

1-valve core, 2-valve rod, 3-driving device, 4-output shaft, 5-driven part, 6-driving part, 7-positioning pin, 8-driving part, 9-torsion spring, 10-pin hole and 11-shell.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood, the following description is given for further details of the present invention with reference to the accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention, and are not intended to limit the present invention. In the description of the present application, it is to be understood that the terms "front", "back", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, are used for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the scope of the present application.

Example 1:

the valve system for fluid control as shown in fig. 1 comprises a valve core 1, a valve rod 2 fixedly connected with the valve core 1, and a driving device 3 for driving the valve rod 2 to rotate, wherein a transmission mechanism is arranged between the driving device 3 and the valve rod 2; the valve rod 2 is driven to switch the forward and reverse switching device of the rotating direction, and the time relay is used for controlling the starting time of the driving device 3.

The embodiment also comprises an interaction device which is in signal connection with the forward and reverse rotation switching device and the time relay; the forward and reverse rotation switching device and the time relay are connected in series on a power supply circuit of the driving device 3.

The driving device 3 in the embodiment adopts a direct current motor, the forward and reverse switching device adopts a forward and reverse circuit consisting of two relays, and the time relay adopts the existing finished product.

Example 2:

on the basis of embodiment 1, the transmission mechanism comprises an output shaft 4 fixedly connected with a valve rod 2, a driven part 5 rotatably sleeved on the output shaft 4, a transmission part 6 fixedly sleeved on the output shaft 4, and a driving part 8 for driving the driven part 5 to rotate; the driven part 5 and the transmission part 6 are transmitted through a positioning pin 7; the driving piece 8 is connected with the output end of the driving device 3; and a torsion spring 9 connected to the follower 5.

The driving part 8 is a gear, the driven part 5 is a 1/4 gear matched with the driving part 8, and teeth on the driving part 8 and the driven part can be meshed with each other.

The transmission piece 6 is provided with a pin hole 10; one end of the positioning pin 7 is fixed on the driven part 5, and the other end of the positioning pin is in clearance fit with the pin hole 10. The pin hole 10 is an arc-shaped hole coaxial with the driven part 5, and the arc length of the arc-shaped hole is larger than the outer diameter of the positioning pin 7.

In a more preferred embodiment, the follower 5 is connected to the output shaft 4 by a bearing.

In a more preferred embodiment, the driving device 3 and the transmission mechanism are both located inside the housing 11, and one end of the torsion spring 9 is fixed on the driven member 5, and the other end is fixed on the inner wall of the housing 11.

The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Further, the term "connected" used herein may be directly connected or indirectly connected via other components without being particularly described.

Claims

1. A valve system for fluid control comprises a valve core (1), a valve rod (2) fixedly connected with the valve core (1), and a driving device (3) for driving the valve rod (2) to rotate, and is characterized in that a transmission mechanism is arranged between the driving device (3) and the valve rod (2); the valve rod (2) is driven to switch the forward and reverse switching device of the rotating direction, and the time relay is used for controlling the starting time of the driving device (3).

2. The valve system for fluid control according to claim 1, further comprising an interaction device in signal connection with said forward and reverse switching device and a time relay.

3. Valve system for fluid control according to claim 1, characterized in that said forward and reverse switching means, time relay are connected in series to the power supply circuit of the driving means (3).

4. A valve system for fluid control according to any one of claims 1-3, characterised in that the drive means (3) is an electric motor.

5. A valve system for fluid control according to claim 4, wherein the transmission mechanism comprises an output shaft (4) fixedly connected with the valve rod (2), a driven member (5) rotatably sleeved on the output shaft (4), a transmission member (6) fixedly sleeved on the output shaft (4), and a driving member (8) for driving the driven member (5) to rotate; the driven part (5) is connected with the transmission part (6) in a matching way through a positioning pin (7); the driving piece (8) is connected with the output end of the driving device (3); also comprises a torsion spring (9) connected with the driven part (5).

6. Valve system for fluid control according to claim 5, wherein the driving member (8) is a gear and the driven member (5) is a 1/4 gear matching the driving member (8).

7. A valve system for fluid control according to claim 6, wherein the transmission member (6) is provided with a pin hole (10); one end of the positioning pin (7) is fixed on the driven piece (5), and the other end of the positioning pin is in clearance fit with the pin hole (10).

8. Valve system for fluid control according to claim 7, characterized in that the pin hole (10) is an arc-shaped hole coaxial with the follower (5), the arc length of which is larger than the outer diameter of the positioning pin (7).

9. A valve system for fluid control according to claim 5, characterized in that the follower (5) is connected to the output shaft (4) by means of a bearing or a bushing.

10. A valve system for fluid control according to claim 5, characterized in that the drive means (3), the transmission are located inside the housing (11).