Three-position three-way valve of piezoelectric ceramic actuator

Abstract

The three-position three-way valve of the piezoelectric ceramic actuator comprises a valve body, the top of the valve body is fixedly connected with a first air outlet and a second air outlet, the bottom of the valve body is fixedly connected with an air inlet, a limiting groove is formed in the valve body, a regulating and controlling mechanism is arranged in the valve body, and the regulating and controlling mechanism is connected with the first air outlet and the second air outlet. The utility model relates to the technical field of fluid control. According to the three-position three-way valve with the piezoelectric ceramic actuator, the piezoelectric ceramic actuator is adopted as a driving device, rapid switching can be achieved, the response time can reach the millisecond level or even the microsecond level, the displacement resolution of the piezoelectric ceramic actuator is high, accurate flow control can be achieved, and meanwhile the piezoelectric ceramic actuator is small in size, small in size and high in reliability. Light weight and miniaturization design of the valve can be achieved, the piezoelectric ceramic actuator is low in power consumption, reduction of energy consumption of the whole system is facilitated, the structure is simple, machining and assembling are easy, the reliability of the valve is improved, and the service life of the valve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluid control technical field, concretely is a piezoelectric ceramic actuator three position three way valve. BACKGROUND

[0002] The utility model discloses a three position three way valve (grant announcement number: CN206072424U, grant announcement day: 2017.04.05), including valve body, limit seat, valve rod and piston, the valve body is cylindrical valve body, is equipped with outlet a, outlet b and import along the center line direction of valve body, and the import is equipped between outlet a and outlet b, is equipped with sealing platform in the valve body, and the bottom installs limit seat, and the top installs valve cover, the bottom of valve rod passes through valve cover and installs in the valve body, and the bottom of valve rod installs piston, and the middle part of valve rod is equipped with screw threads, and the import of valve body is equipped on sealing platform, and sealing platform and piston cooperate and install and form sealing surface, and valve rod and valve cover are installed through thread / screw sleeve cooperation, and the sealing device is equipped between valve cover and valve rod, and the technical purpose of this three position three way valve is to provide a three position three way valve that occupies small space, and the production cost is low, and the structure is simpler, and the whole structure of this three position three way valve is optimized, and the operation is more simple, and the structure is more reasonable.

[0003] Based on the above file: three position three way valve is a kind of commonly used fluid control element, widely used in pneumatic, hydraulic and other fields, for controlling the flow direction and on-off state of fluid, traditional three position three way valve usually uses electromagnet or cylinder as driving device, there is slow response speed, large volume, high power consumption problem, therefore, the utility model provides a piezoelectric ceramic actuator three position three way valve. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of prior art, the utility model provides a piezoelectric ceramic actuator three position three way valve, solves the problem that traditional three position three way valve usually uses electromagnet or cylinder as driving device, there is slow response speed, large volume, high power consumption.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a piezoelectric ceramic actuator three position three way valve, including valve body, the top of the valve body is fixedly connected with first air outlet and second air outlet, the bottom of the valve body is fixedly connected with air inlet, the inside of the valve body is equipped with limit slot, the inside of the valve body is equipped with control mechanism, the control mechanism includes:

[0006] Control assembly, including sealing plate installed in the inner wall of valve body, the inside of the sealing plate is slidably connected with valve rod, the surface of the valve rod and the inside of two groups of sealing plates are installed with valve core, the surface of the valve core is combined with the inner surface of valve body, and the one end of the valve rod is fixedly connected with moving block;

[0007] A driving assembly is arranged on the left side of the top of the valve body;

[0008] A reset assembly is arranged on the other end of the valve rod.

[0009] Preferably, the driving assembly comprises a piezoelectric ceramic actuator body arranged on the left side of the top of the valve body, the bottom of the piezoelectric ceramic actuator body is slidably connected with a driving rod, and one end of the driving rod is connected with a moving block in the interior of the valve body through a transmission assembly.

[0010] Preferably, the transmission assembly comprises a transmission rod rotatably arranged on one end of the driving rod, one end of the transmission rod is rotatably connected with a transmission block, and one side of the transmission block is fixedly connected with one side of the moving block.

[0011] Preferably, the inner wall of the valve body is fixedly connected with symmetrically arranged limiting strips, and the surface of the limiting strips is slidably connected with the interior of the moving block.

[0012] Preferably, the surface of the sealing plate is arranged with a sealing gasket, and the surface of the valve core is arranged with an O-shaped sealing ring.

[0013] Preferably, the reset assembly comprises a reset block arranged on the other end of the valve rod, the surface of the reset block is slidably connected with the inner surface of the limiting groove, one side of the reset block is fixedly connected with a reset spring, and one end of the reset spring is fixedly connected with the inner wall of the valve body.

[0014] Beneficial effects

[0015] The utility model provides a kind of piezoelectric ceramic actuator three-position three-way valve.Compared with prior art, it has the following beneficial effects:

[0016] 1. The piezoelectric ceramic actuator three-position three-way valve, by using piezoelectric ceramic actuator as driving device, can realize rapid switching, response time can reach millisecond level or even microsecond level, the displacement resolution of piezoelectric ceramic actuator is high, accurate flow control can be realized, at the same time, piezoelectric ceramic actuator is small in size, lightweight and small size design of valve can be realized.

[0017] 2. The piezoelectric ceramic actuator three-position three-way valve, by using piezoelectric ceramic actuator as driving device, piezoelectric ceramic actuator is low in power consumption, which is conducive to reducing the energy consumption of the whole system, and the structure is simple, easy to process and assemble, improve the reliability and service life of valve. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the external structure perspective view of the utility model;

[0019] Figure 2 It is the external structure perspective view of the utility model;

[0020] Figure 3 It is the internal structure schematic view of the valve body of the utility model;

[0021] Figure 4 It is the three-dimensional schematic view of the reset assembly of the utility model.

[0022] In the drawing: 1-valve body, 2-first air outlet, 3-second air outlet, 4-air inlet, 5-limiting groove, 6-regulating mechanism, 61-regulating assembly, 611-sealing plate, 612-valve rod, 613-valve core, 614-moving block, 62-driving assembly, 621-piezoelectric ceramic actuator body, 622-driving rod, 63-reset assembly, 631-reset block, 632-reset spring, 7-transmission assembly, 71-transmission rod, 72-transmission block, 8-limiting strip, 9-sealing gasket, 10-O-shaped sealing ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0025] A piezoelectric ceramic actuator three-position three-way valve, including valve body 1, the top of valve body 1 is fixedly connected with first air outlet 2 and second air outlet 3, the bottom of valve body 1 is fixedly connected with air inlet 4, the inside of valve body 1 is provided with limiting groove 5, the inside of valve body 1 is equipped with regulating mechanism 6, regulating mechanism 6 includes:

[0026] Regulating assembly 61, including the sealing plate 611 installed in the inner wall of valve body 1, the inside of sealing plate 611 is slidably connected with valve rod 612, the surface of valve rod 612 and the inside of two groups of sealing plate 611 are installed with valve core 613, the surface of valve core 613 is combined with the inner surface of valve body 1, one end of valve rod 612 is fixedly connected with moving block 614;

[0027] Driving assembly 62 is arranged at the left side of the top of valve body 1.

[0028] Reset assembly 63 is arranged at the other end of valve rod 612.

[0029] Sealing plate 611 is provided with two symmetric blocks, and sealing ring is also installed at the connecting part of sealing plate 611 and valve rod 612.

[0030] The valve core 613 is located in the valve body 1, used for controlling the flow direction of fluid;

[0031] The valve core 613 has three stable working positions of middle position, left position and right position:

[0032] The middle position: the air inlet 4 is not communicated with the first air outlet 2 and the second air outlet 3, and the valve is in the closed state;

[0033] The left position: the air inlet 4 is communicated with the second air outlet 3, and the first air outlet 2 is closed;

[0034] The right position: the air inlet 4 is communicated with the first air outlet 2, and the second air outlet 3 is closed.

[0035] In the embodiment, the driving assembly 62 includes a piezoelectric ceramic actuator body 621 installed on the left side of the top of the valve body 1, and the bottom of the piezoelectric ceramic actuator body 621 is slidingly connected with a driving rod 622, one end of the driving rod 622 is connected with the transmission assembly 7 to make the moving block 614 slide in the inside of the valve body 1.

[0036] The piezoelectric ceramic actuator body 621 is a stacked piezoelectric ceramic actuator.

[0037] The valve body 1 is made of aluminum alloy or stainless steel.

[0038] In the embodiment, the driving assembly 62 includes a piezoelectric ceramic actuator body 621 installed on the left side of the top of the valve body 1, and the bottom of the piezoelectric ceramic actuator body 621 is slidingly connected with a driving rod 622, one end of the driving rod 622 is connected with the transmission assembly 7 to make the moving block 614 slide in the inside of the valve body 1.

[0039] The driving rod 622 slides on the top of the valve body 1.

[0040] In the embodiment, the inner wall of the valve body 1 is fixedly connected with the symmetrical limiting strips 8, and the surface of the limiting strips 8 is slidingly connected with the inside of the moving block 614.

[0041] The limiting strips 8 are used for slidingly limiting the moving block 614.

[0042] In the embodiment, the surface of the sealing plate 611 is installed with the sealing gasket 9, and the surface of the valve core 613 is installed with the O-shaped sealing ring 10.

[0043] In the embodiment, the reset assembly 63 includes a reset block 631 installed on the other end of the valve rod 612, the surface of the reset block 631 is slidingly connected with the inner surface of the limiting groove 5, one side of the reset block 631 is fixedly connected with the reset spring 632, and one end of the reset spring 632 is fixedly connected with the inner wall of the valve body 1.

[0044] The limiting groove 5 is used for slidingly limiting the reset block 631.

[0045] The reset spring 632 will make the valve core 613 in the middle position under the influence of no external force, so that the air inlet 4 is not communicated with the first air outlet 2 and the second air outlet 3, and the valve is in the closed state.

[0046] By adopting the piezoelectric ceramic actuator as the driving device, the rapid switching can be realized, the response time can reach milliseconds or even microseconds, the displacement resolution of the piezoelectric ceramic actuator is high, the accurate flow control can be realized, at the same time, the piezoelectric ceramic actuator is small in size, the lightweight and small size design of the valve can be realized.

[0047] By adopting the piezoelectric ceramic actuator as the driving device, the piezoelectric ceramic actuator is low in power consumption, which is conducive to reducing the energy consumption of the whole system, and the structure is simple, easy to process and assemble, and the reliability and service life of the valve are improved.

[0048] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0049] The valve core 613 is located in the inside of the valve body 1, has three stable working positions of the middle position, the left position and the right position, when the piezoelectric ceramic actuator body 621 is not started, at this time, the valve core 613 is in the middle position under the influence of the reset spring 632, at this time, the air inlet 4, the first air outlet 2 and the second air outlet 3 are not communicated, and the valve is in the closed state, when working, when the piezoelectric ceramic actuator body 621 applies the positive voltage, the piezoelectric ceramic actuator body 621 drives the driving rod 622 to elongate, so that one end of the transmission rod 71 rotates counterclockwise at one end of the driving rod 622, the other end of the transmission rod 71 rotates counterclockwise in the inside of the transmission block 72, so that the transmission block 72, the moving block 614, the valve rod 612, the valve core 613 and the reset block 631 slide synchronously to the right side, at this time, the valve core 613 slides to the right position, the second air outlet 3 is in the closed state, and the air inlet 4 keeps communicated with the first air outlet 2, when the piezoelectric ceramic actuator body 621 applies the reverse voltage, the piezoelectric ceramic actuator body 621 drives the driving rod 622 to shorten, so that one end of the transmission rod 71 rotates clockwise at one end of the driving rod 622, the other end of the transmission rod 71 rotates clockwise in the inside of the transmission block 72, so that the transmission block 72, the moving block 614, the valve rod 612, the valve core 613 and the reset block 631 slide synchronously to the left side, at this time, the valve core 613 slides to the left position, the first air outlet 2 is in the closed state, and the air inlet 4 keeps communicated with the second air outlet 3.

[0050] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0051] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A three-position three-way valve with a piezoelectric ceramic actuator, comprising a valve body (1), characterized in that: The valve body (1) has a first air outlet (2) and a second air outlet (3) fixedly connected to its top, and an air inlet (4) fixedly connected to its bottom. A limiting groove (5) is formed inside the valve body (1), and a regulating mechanism (6) is provided inside the valve body (1). The regulating mechanism (6) includes: The control assembly (61) includes a sealing plate (611) installed on the inner wall of the valve body (1), a valve stem (612) is slidably connected inside the sealing plate (611), a valve core (613) is installed on the surface of the valve stem (612) and inside the two sets of sealing plates (611), the surface of the valve core (613) is in contact with the inner surface of the valve body (1), and a moving block (614) is fixedly connected to one end of the valve stem (612). A drive assembly (62) is located on the left side of the top of the valve body (1); A reset assembly (63) is located at the other end of the valve stem (612).

2. The three-position three-way valve with piezoelectric ceramic actuator according to claim 1, characterized in that: The drive assembly (62) includes a piezoelectric ceramic actuator body (621) mounted on the top left side of the valve body (1). A drive rod (622) is slidably connected to the bottom of the piezoelectric ceramic actuator body (621). One end of the drive rod (622) is connected to a transmission assembly (7) to make the moving block (614) slide inside the valve body (1).

3. A three-position three-way valve with a piezoelectric ceramic actuator according to claim 2, characterized in that: The transmission assembly (7) includes a transmission rod (71) rotatably mounted on one end of a drive rod (622), and a transmission block (72) is rotatably connected to one end of the transmission rod (71). One side of the transmission block (72) is fixedly connected to one side of a moving block (614).

4. A three-position three-way valve with a piezoelectric ceramic actuator according to claim 1, characterized in that: The inner wall of the valve body (1) is fixedly connected with a symmetrical limiting strip (8), and the surface of the limiting strip (8) is slidably connected to the interior of the moving block (614).

5. A three-position three-way valve with a piezoelectric ceramic actuator according to claim 1, characterized in that: A sealing gasket (9) is installed on the surface of the sealing plate (611), and an O-ring (10) is installed on the surface of the valve core (613).

6. A three-position three-way valve with a piezoelectric ceramic actuator according to claim 1, characterized in that: The reset assembly (63) includes a reset block (631) installed at the other end of the valve stem (612). The surface of the reset block (631) is slidably connected to the inner surface of the limiting groove (5). A reset spring (632) is fixedly connected to one side of the reset block (631), and one end of the reset spring (632) is fixedly connected to the inner wall of the valve body (1).

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