Spiral air inlet piezoelectric valve

Abstract

The utility model relates to the technical field of piezoelectric valves, and particularly discloses a spiral air inlet piezoelectric valve which comprises a valve body, a piezoelectric plate and a blocking piece, the valve body is provided with a first air outlet and a second air outlet, the piezoelectric plate is located in the valve body, the blocking piece comprises blocking units and a locking unit, and the two blocking units are located on the lower side and the upper side of the piezoelectric plate respectively. The piezoelectric plate is provided with a first air outlet and a second air outlet and corresponds to the first air outlet and the second air outlet respectively, when current is introduced into the piezoelectric plate, the piezoelectric plate can be bent upwards or downwards according to the forward and reverse directions of the current, the blocking unit can be driven to block the first air outlet or the second air outlet, and therefore the piezoelectric valve can be used as a two-position valve; according to the piezoelectric valve, the first air outlet and the second air outlet can be quickly switched and plugged, the piezoelectric valve can be used for a proportional valve at the moment, the applicability is good, and the air output of the first air outlet and the second air outlet can be accurately controlled according to the forward and reverse proportion of current.

Description

Technical Field

[0001] The utility model relates to the technical field of piezoelectric valves, in particular to a spiral air intake piezoelectric valve. Background Art

[0002] In the field of pneumatic control systems, traditional two-position valves and proportional valves are widely used in industrial automation, precision instrument control, etc., but they often face some common challenges, such as weak vibration resistance, high energy consumption, and insufficient structural design. Although the two-position valve can realize simple opening and closing functions, it is powerless in applications where the gas flow ratio needs to be accurately controlled. On the other hand, although the existing proportional valve can adjust the flow, its complex mechanical structure leads to increased manufacturing costs and poor stability in frequent vibration environments. In addition, most valve designs fail to fully utilize the potential of low-power piezoelectric materials, thereby increasing operating costs. Therefore, developing a pneumatic control valve with a sophisticated structure, low power consumption, and high vibration resistance to meet the market demand for efficient, economical, and reliable airflow control solutions has become an important direction of current technological development. Summary of the invention

[0003] The utility model is made in consideration of the above-mentioned problems, and the purpose of the utility model is to provide a spiral air intake piezoelectric valve, which can be used as a two-position valve and also as a proportional valve, and has high gas flow control accuracy and good stability.

[0004] To achieve the above object, the utility model provides a spiral air intake piezoelectric valve, comprising:

[0005] A valve body, on which a first air outlet and a second air outlet are provided;

[0006] a piezoelectric plate, located in the valve body and between the first air outlet and the second air outlet;

[0007] A blocking member, comprising a blocking unit and a locking unit, wherein the two blocking units are respectively located at the lower and upper sides of the piezoelectric plate and correspond to the first air outlet and the second air outlet respectively, and the two locking units are rotatably arranged at the first air outlet and the second air outlet respectively;

[0008] A locking part is provided on the blocking unit, and the piezoelectric plate can control the blocking unit to drive the locking unit to rotate along the first direction, and can be connected with the locking part to seal the first air outlet or the second air outlet, and the piezoelectric plate can control the blocking unit to drive the locking unit to continue to rotate along the first direction, and can be separated from the locking part to open the first air outlet or the second air outlet.

[0009] According to the above-mentioned spiral air intake piezoelectric valve, a guide groove group is provided on the blocking unit, and the guide groove group includes a first guide groove, a second guide groove and the locking portion, and the locking portion is located between the first guide groove and the second guide groove. A guide block is provided on the locking unit. When the locking unit rotates along a first direction, the guide block can move through the first guide groove to connect with the locking portion, and can separate from the blocking unit through the second guide groove.

[0010] According to the above-mentioned spiral air inlet piezoelectric valve, when the first current is passed through the piezoelectric plate, the guide block of one of the locking units can be rotated along the first direction into the first guide groove corresponding to the blocking unit; when the piezoelectric plate is in a power-off state, the guide block located in the first guide groove can be rotated in the first direction to the locking portion; when the first current is passed through the piezoelectric plate again, the guide block located on the locking portion can be rotated along the first direction into the second guide groove; when the piezoelectric plate is in a power-off state, the guide block located in the second guide groove can be rotated along the first direction to disengage from the blocking unit.

[0011] According to the above-mentioned spiral air inlet piezoelectric valve, the blocking unit includes a gas blocking block and a blocking rubber located in the gas blocking block, the gas blocking block is cylindrical as a whole, and two guide groove groups are provided in the gas blocking block, and the two guide groove groups are symmetrically arranged in the gas blocking block along the circumference of the gas blocking block, and two openings are provided on the gas blocking block, and the two openings are connected to the two guide groove groups;

[0012] The locking unit includes a locking block, and the two guide blocks are located on two symmetrical sides of the locking block. The two guide blocks can enter into the two guide groove groups through the two openings respectively. When the guide block is connected to the locking block, the sealing rubber can abut against the first air outlet or the second air outlet.

[0013] According to the above-mentioned spiral air intake piezoelectric valve, the guide groove group is W-shaped as a whole, the locking portion is set as a locking groove, the locking groove is Λ-shaped, one end of the locking groove is connected to the first guide groove, and the other end of the locking groove is connected to the second guide groove;

[0014] The guide block is triangular in shape as a whole, and is provided with a first guide bevel and a second guide bevel. The bottoms of the first guide groove and the second guide groove are set as the first guide bevel that matches the first guide bevel, and the locking groove is provided with a second guide bevel that matches the second guide bevel.

[0015] According to the above-mentioned spiral air intake piezoelectric valve, when the first guide bevel abuts against the first guide bevel, the guide block can be driven to rotate along the first direction, and when the second guide bevel abuts against the second guide bevel, the guide block can be driven to rotate along the first direction.

[0016] According to the above-mentioned spiral air-inlet piezoelectric valve, the first air outlet is located above the piezoelectric plate, the second air outlet is located below the piezoelectric plate, and the first current is set as a forward current. When a forward current is passed through the piezoelectric plate, the piezoelectric plate bends upward, and when a reverse current is passed through the piezoelectric plate, the piezoelectric plate bends downward.

[0017] The utility model has the following beneficial effects:

[0018] 1. By applying current to the piezoelectric plate, the piezoelectric plate can be bent and the blocking unit can be driven to move up and down to block the first air outlet or the second air outlet. When the first air outlet or the second air outlet is blocked alone, it can be used as a two-position valve, and by applying reverse current, the piezoelectric plate can be driven to move in the opposite direction. If the current is switched frequently, the two air outlets can be quickly blocked back and forth. By controlling the positive and reverse current ratio, the gas flow ratio can be controlled. It can be used as a proportional valve with good applicability and high accuracy.

[0019] 2. After power failure, the locking part can be used to mechanically lock the blocking unit, so as to maintain the blocking state of the first air outlet or the second air outlet, thereby saving electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall appearance structure of the embodiment;

[0021] Figure 2 is a cross-sectional view of the overall structure of the embodiment;

[0022] Figure 3 is a schematic diagram of the locking block structure of an embodiment;

[0023] Figure 4 Schematic diagram of the blocking block structure of the embodiment.

[0024] In the figure:

[0025] 1. Valve body; 11. First air outlet; 12. Second air outlet;

[0026] 2. Piezoelectric plate;

[0027] 3. Sealing member; 31. Sealing block; 311. First guide groove; 311a. First guide slope; 312. Second guide groove; 313. Locking groove; 313a. Second guide slope; 314. Sealing rubber; 315. Opening; 32. Locking block; 321. Guide block; 321a. First guide slope; 321b. Second guide slope. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0029] like Figure 1-4 As shown, a spiral air inlet piezoelectric valve comprises a valve body 1, a piezoelectric plate 2 and a blocking member 3. The piezoelectric plate 2 controls the movement of the blocking member 3 to achieve blocking and opening of the air outlet on the valve body 1.

[0030] Specifically, a first air outlet 11 and a second air outlet 12 are provided on the valve body 1, the piezoelectric plate 2 is located inside the valve body 1 and between the first air outlet 11 and the second air outlet 12, the blocking member 3 includes a blocking unit and a locking unit, the two blocking units are respectively located on the lower and upper sides of the piezoelectric plate 2, and respectively correspond to the first air outlet 11 and the second air outlet 12. When current is passed through the piezoelectric plate 2, the piezoelectric plate 2 will bend upward or downward according to the forward and reverse direction of the current, thereby driving the blocking unit to achieve blocking of the first air outlet 11 or the second air outlet 12. Therefore, the piezoelectric valve can be used as a two-position valve. Of course, when the forward and reverse directions of the current are quickly switched, the first air outlet 11 and the second air outlet 12 can be quickly switched and blocked. At this time, the piezoelectric valve can be used as a proportional valve with good applicability, and the air outlet volume of the first air outlet 11 and the second air outlet 12 can be accurately controlled according to the forward and reverse ratio of the current.

[0031] In order to save energy, the two locking units are rotatably arranged at the first air outlet 11 and the second air outlet 12 respectively. A locking part is provided on the blocking unit. The piezoelectric plate 2 can control the blocking unit to drive the locking unit to rotate along the first direction and can be connected with the locking part. At this time, the blocking unit can seal the first air outlet or the second air outlet, and due to the existence of the locking part, the blocking unit can be mechanically locked in this position. The piezoelectric plate 2 can be powered off to save energy. When the power is turned on again, the piezoelectric plate 2 can also control the blocking unit to drive the locking unit to continue to rotate along the first direction and can be separated from the locking part. Only after being separated from the locking part can it be separated from the blocking unit, which is convenient for the blocking unit to move away from the first air outlet or the second air outlet, thereby opening the first air outlet or the second air outlet.

[0032] Specifically, a guide groove group is provided on the blocking unit, and the guide groove group includes a first guide groove 311, a second guide groove 312 and a locking portion. The locking portion is located between the first guide groove 311 and the second guide groove 312. A guide block 321 is provided on the locking unit. When the locking unit rotates along the first direction, the guide block 321 can move through the first guide groove 311 to connect with the locking portion, and can be separated from the blocking unit through the second guide groove 312. When the guide block 321 is locked on the locking portion, the blocking unit can be locked on the locking unit. At this time, the blocking unit is at the first air outlet or the second air outlet, and a blocking effect can be achieved.

[0033] Furthermore, when the first current is passed through the piezoelectric plate 2, the piezoelectric plate 2 bends upward or downward, and the guide block 321 of one locking unit can be rotated into the first guide groove 311 of the corresponding blocking unit along the first direction. When the piezoelectric plate 2 is in a power-off state, the guide block 321 located in the first guide groove 311 can be rotated in the first direction to the locking portion. When the first current is passed through the piezoelectric plate 2 again, the guide block 321 located on the locking portion can be rotated into the second guide groove 312 along the first direction. When the piezoelectric plate 2 is in a power-off state, the guide block 321 located in the second guide groove 312 can be rotated along the first direction to disengage from the blocking unit. That is, it is necessary to pass the first current first, and then turn off the power to achieve mechanical locking of the blocking unit, and then pass the first current to release the mechanical lock, and then turn off the power to achieve separation of the locking unit and the blocking unit. If the opposite second current is passed, the other air outlet can be blocked.

[0034] The locking groove 313 is provided with a second guide slope 313a which is adapted to the second guide slope 321b. In the embodiment, two second guide slopes 313a are provided, which are located on both sides of the locking groove 313. When the piezoelectric plate 2 drives the blocking unit to move up and down, the current is firstly supplied to the blocking unit, and the blocking unit moves upward or downward. The first guide slope 311a can abut against the first guide slope 321a, and can drive the guide block 321 to rotate along the first direction. When it reaches the lowest point of the first guide groove 311, it cannot continue to rotate. At this time, the power is cut off, and the blocking unit is reset, driving the second guide slope 313a to abut against the second guide slope 321b, and can drive the guide block 321 to rotate along the first direction. At this time, the guide block 321 can move to the highest point of the locking groove 313 and cannot move further, realizing mechanical locking. After the current is passed through again, the blocking unit continues to move, driving the second guide slope 313a on the other side to abut against the first guide slope 321a, so that it moves to the lowest point of the second guide groove 312. After the power is cut off again, the first guide slope 311a in the second guide groove 312 abuts against the first guide slope 321a, driving it to move out of the guide groove group and separate from the blocking unit.

[0035] Among them, the first air outlet 11 is located above the piezoelectric plate 2, the second air outlet 12 is located below the piezoelectric plate 2, and the first current is set as a forward current. When a forward current is passed through the piezoelectric plate 2, the piezoelectric plate 2 bends upward, and when a reverse current is passed through the piezoelectric plate 2, the piezoelectric plate 2 bends downward, that is, when a forward current is passed through, the first air outlet 11 can be blocked, and when a reverse current is passed through, the second air outlet 12 can be blocked. When used as a proportional valve, it can be cyclically controlled according to the steps of passing a forward current, turning off the power, passing a forward current again, turning off the power, passing a reverse current, turning off the power, passing a reverse current, and turning off the power.

[0036] In order to achieve blocking, the blocking unit includes an air blocking block and a blocking rubber 314 located in the air blocking block. The air blocking block is cylindrical as a whole. Two guide groove groups are provided in the air blocking block. The two guide groove groups are symmetrically arranged in the air blocking block along the circumference of the air blocking block, and two openings 315 are provided on the air blocking block. The two openings 315 are connected to the two guide groove groups. The locking unit includes a locking block 32. Two guide blocks 321 are located on both sides of the locking block 32 symmetrically. The two guide blocks 321 can enter the two guide groove groups through the two openings 315 respectively. When the guide block 321 is connected to the locking block 32, the blocking rubber 314 can abut against the first air outlet 11 or the second air outlet 12. The use of two groups of guide groove groups and two guide blocks 321 can ensure that the locking block 32 rotates more smoothly. At the same time, the blocking rubber 314 is used to block the first air outlet 11 or the second air outlet 12 to ensure sealing.

[0037] The technical solution of the utility model is described in detail above in conjunction with the accompanying drawings, and the described embodiments are used to help understand the idea of ​​the utility model. The specific embodiments described herein are merely examples of the spirit of the utility model. A person skilled in the art of the utility model may make various modifications or supplements to the described specific embodiments or replace them in a similar manner, but this will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

[0038] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A spiral air inlet piezoelectric valve, characterized in that: include: A valve body, on which a first air outlet and a second air outlet are provided; a piezoelectric plate, located in the valve body and between the first air outlet and the second air outlet; A blocking member, comprising a blocking unit and a locking unit, wherein the two blocking units are respectively located at the lower and upper sides of the piezoelectric plate and correspond to the first air outlet and the second air outlet respectively, and the two locking units are rotatably arranged at the first air outlet and the second air outlet respectively; A locking part is provided on the blocking unit, and the piezoelectric plate can control the blocking unit to drive the locking unit to rotate along the first direction, and can be connected with the locking part to seal the first air outlet or the second air outlet, and the piezoelectric plate can control the blocking unit to drive the locking unit to continue to rotate along the first direction, and can be separated from the locking part to open the first air outlet or the second air outlet.

2. A spiral air inlet piezoelectric valve according to claim 1, characterized in that: The blocking unit is provided with a guide groove group, the guide groove group includes a first guide groove, a second guide groove and the locking portion, the locking portion is located between the first guide groove and the second guide groove, and the locking unit is provided with a guide block. When the locking unit rotates along a first direction, the guide block can move through the first guide groove to connect with the locking portion, and can be separated from the blocking unit through the second guide groove.

3. A spiral air inlet piezoelectric valve according to claim 2, characterized in that: When the first current is passed through the piezoelectric plate, the guide block of one of the locking units can be rotated along the first direction into the first guide groove corresponding to the blocking unit. When the piezoelectric plate is in a power-off state, the guide block located in the first guide groove can be rotated in the first direction to the locking portion. When the first current is passed through the piezoelectric plate again, the guide block located on the locking portion can be rotated along the first direction into the second guide groove. When the piezoelectric plate is in a power-off state, the guide block located in the second guide groove can be rotated along the first direction to disengage from the blocking unit.

4. A spiral air inlet piezoelectric valve according to claim 3, characterized in that: The blocking unit comprises a gas blocking block and a blocking rubber located in the gas blocking block. The gas blocking block is cylindrical as a whole. Two guide groove groups are arranged in the gas blocking block. The two guide groove groups are symmetrically arranged in the gas blocking block along the circumference of the gas blocking block. Two openings are provided on the gas blocking block. Both openings are connected to the two guide groove groups. The locking unit includes a locking block, and the two guide blocks are located on two symmetrical sides of the locking block. The two guide blocks can enter into the two guide groove groups through the two openings respectively. When the guide block is connected to the locking block, the sealing rubber can abut against the first air outlet or the second air outlet.

5. The spiral air inlet piezoelectric valve according to claim 3, characterized in that: The guide groove group is in a W shape as a whole, the locking portion is configured as a locking groove, the locking groove is in a Λ shape, one end of the locking groove is connected to the first guide groove, and the other end of the locking groove is connected to the second guide groove; The guide block is triangular in shape as a whole, and is provided with a first guide bevel and a second guide bevel. The bottoms of the first guide groove and the second guide groove are set as the first guide bevel that matches the first guide bevel, and the locking groove is provided with a second guide bevel that matches the second guide bevel.

6. The spiral air inlet piezoelectric valve according to claim 5, characterized in that: When the first guide slope abuts against the first guide slope, the guide block can be driven to rotate along the first direction, and when the second guide slope abuts against the second guide slope, the guide block can be driven to rotate along the first direction.

7. The spiral air inlet piezoelectric valve according to claim 3, characterized in that: The first air outlet is located above the piezoelectric plate, the second air outlet is located below the piezoelectric plate, the first current is set as a forward current, when a forward current is passed through the piezoelectric plate, the piezoelectric plate bends upward, when a reverse current is passed through the piezoelectric plate, the piezoelectric plate bends downward.

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