Piezoelectric valve structure

Abstract

The utility model discloses a piezoelectric valve structure, and relates to the technical field of piezoelectric valves, the piezoelectric valve structure comprises a valve body and a flow channel seat body, the valve body is provided with piezoelectric ceramics and a displacement transmission assembly; a liquid flow channel is arranged in the flow channel seat body; the runner seat body further comprises a firing pin assembly, the firing pin assembly comprises a firing pin piece and a firing pin guide sleeve which are in sliding connection with each other, and the firing pin guide sleeve is fixedly connected with the runner seat body; the first end of the firing pin piece is used for being connected with the displacement transmission assembly, and the second end of the firing pin piece sequentially penetrates through the firing pin guide sleeve and the spring plug ring and extends into the liquid flow channel. According to the technical scheme provided by the utility model, the firing pin assembly is combined with the flow channel seat body, and the repeated installation process of the firing pin assembly and the flow channel seat body is reduced, so that the phenomenon that the piezoelectric ceramic is damaged due to the fact that liquid flows into the piezoelectric valve due to abrasion of the spring plug ring is avoided.

Description

Technical Field

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

[0002] Piezoelectric valve is a two-position (or proportional) control valve made by using the principle that piezoelectric ceramics produce bending deformation under the action of voltage. It is commonly used in dispensing valves of dispensing equipment. Common piezoelectric valves include a striker assembly and a flow channel seat body, wherein the flow channel seat body is provided with a liquid flow channel, and a flooding ring is provided between the striker assembly and the liquid flow channel, and the flooding ring is used to block the liquid from flowing into the striker assembly; the piezoelectric ceramics are used to directly or indirectly drive the striker assembly to move, so as to push the liquid in the liquid flow channel out to the liquid outlet.

[0003] In the prior art, the striker assembly and the flow channel seat body are set up separately, and the two need to be installed and combined with each other before use; during the repeated installation process, the plug ring between the striker assembly and the flow channel seat body is easily worn, so that the liquid in the liquid flow channel adheres to the striker assembly and flows into the piezoelectric valve with the movement of the striker assembly, causing damage to the piezoelectric ceramic.

[0004] It should be noted that the above contents are only used to assist in understanding the technical solution of the present utility model, and do not constitute an admission that the above contents are prior art. Utility Model Content

[0005] The main purpose of the utility model is to propose a piezoelectric valve structure, which aims to combine the striker assembly with the flow channel seat body, and reduce the repeated installation process of the striker assembly and the flow channel seat body to avoid the wear of the flooded ring and cause the liquid to flow into the inside of the piezoelectric valve and cause damage to the piezoelectric ceramics.

[0006] To achieve the above object, the utility model provides a piezoelectric valve structure, comprising:

[0007] A valve body, wherein the valve body is provided with piezoelectric ceramics and a displacement transmission component;

[0008] A flow channel seat body, wherein a liquid flow channel is provided inside the flow channel seat body, and a liquid outlet is provided at the end of the liquid flow channel; the flow channel seat body also includes a striker assembly, and the striker assembly includes a striker member and a striker guide sleeve that are slidably connected to each other, wherein the striker member is coaxially aligned with the liquid outlet, the striker guide sleeve is fixedly connected to the flow channel seat body, and a pan-seal ring is provided between the striker guide sleeve and the liquid flow channel; the first end of the striker member is used to be connected to the displacement transmission assembly, and the second end of the striker member passes through the striker guide sleeve and the pan-seal ring in sequence and extends into the liquid flow channel; the piezoelectric ceramic drives the striker member to displace along its axial direction through the displacement transmission assembly to push the liquid in the liquid flow channel out to the liquid outlet.

[0009] In one embodiment, a contact ring is provided at the first end of the striker member; the striker assembly also includes a first spring member and a second spring member, the first spring member is sleeved on the outside of the striker member, and the two ends of the first spring member respectively abut the contact ring and the striker guide sleeve; the second spring member is sleeved on the outside of the first spring member, and the two ends of the second spring member respectively abut the displacement transmission assembly and the valve body.

[0010] In one embodiment, the valve body is provided with a guide through hole, the first end of the striker member passes through the guide through hole and is connected to the displacement transmission assembly; at least part of the second spring member is accommodated in the guide through hole, and the inner wall surface of the guide through hole and the annular outer surface of the second spring member are in contact with each other; the interior of the guide through hole is provided with an abutment platform extending along its axis, and the abutment platform is used for the second spring member to abut.

[0011] In one embodiment, the displacement transmission assembly includes a lever member, which is rotatably connected to the valve body through a rotating shaft; the first end of the lever member is connected to the second spring member, and the second end of the lever member is connected to the driving end of the piezoelectric ceramic, and the second spring member and the piezoelectric ceramic are respectively arranged on opposite sides of the lever member, wherein the rotating shaft is located on a side close to the second end of the lever member.

[0012] In one embodiment, a first protrusion is provided at the first end of the lever member, and the first protrusion is used for the second spring member to be mounted thereon; a second protrusion is provided at the second end of the lever member, and the second protrusion has an arc-shaped outer surface; a recess is provided at the driving end of the piezoelectric ceramic, and the recess has an arc-shaped inner surface; the second protrusion is matched with the recess, and the arc-shaped outer surface and the arc-shaped inner surface are slidably connected to each other.

[0013] In one embodiment, the valve body corresponding to the area directly below the middle of the lever member is provided with a through hole portion, and the through hole portion is used for allowing the liquid to flow out.

[0014] In one embodiment, the valve body has a accommodating cavity, and the piezoelectric ceramic is arranged in the accommodating cavity; the end of the piezoelectric ceramic away from its driving end is defined as the fixed end of the piezoelectric ceramic, and the valve body is provided with a piezoelectric regulating component, and the piezoelectric regulating component is connected to the fixed end of the piezoelectric ceramic, and the piezoelectric regulating component is used to ensure that the driving end of the piezoelectric ceramic is in contact with the second end of the lever member.

[0015] In one embodiment, the piezoelectric adjustment assembly includes an adjustment bolt and a lock nut, the adjustment bolt is threadedly connected to the valve body, and the first end of the adjustment bolt abuts against the fixed end of the piezoelectric ceramic; the second end of the adjustment bolt is threadedly connected to the lock nut.

[0016] In one embodiment, the piezoelectric valve structure also includes a cover body, which is detachably connected to the valve body, and the cover body covers the outer side of the second end of the adjusting bolt; the cover body is provided with an air pipe connection port and a line connection port, and the line connection port is used to connect a power cord to electrically connect the power cord to the piezoelectric ceramic; the air pipe connection port is used to connect a gas pipeline, and a cooling gas is injected into the accommodating cavity by the gas pipeline to cool the piezoelectric ceramic.

[0017] In one embodiment, the valve body and the flow channel seat body are detachably connected; specifically, the valve body and the flow channel seat body are connected to each other by at least three fixing bolts.

[0018] The technical solution of the utility model is to install the striker assembly on the flow channel seat body. Specifically, the striker assembly includes a striker member and a striker guide sleeve that are slidably connected to each other, wherein the striker member is coaxially aligned with the liquid outlet, and the striker guide sleeve is fixedly connected to the flow channel seat body; during operation, the piezoelectric ceramic is used to drive the striker member to displace along its axial direction through the displacement transmission assembly to push the liquid in the liquid flow channel to the liquid outlet. The striker assembly is combined with the flow channel seat body through the above structure, reducing the repeated installation process of the striker assembly and the flow channel seat body, so as to avoid the wear of the flooded ring, which causes the liquid to flow into the piezoelectric valve and damage the piezoelectric ceramic. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A structural schematic diagram of an embodiment of a piezoelectric valve structure provided by the utility model;

[0021] Figure 2 A schematic diagram of the internal structure of an embodiment of a piezoelectric valve structure provided by the utility model;

[0022] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0023] Figure 4 This is a structural schematic diagram of a valve body seat in an embodiment of a piezoelectric valve structure provided by the utility model;

[0024] Figure 5 The second structural schematic diagram of the valve body seat body in the first embodiment of the piezoelectric valve structure provided by the utility model;

[0025] Figure 6 This is a schematic structural diagram of a flow channel seat body in an embodiment of a piezoelectric valve structure provided by the utility model.

[0026] Description of reference numerals:

[0027] 1. Valve body; 101. Threaded hole; 102. Guide through hole; 103. Abutment platform; 104. Through hole; 105. Accommodation cavity; 106. Ventilation hole; 2. Piezoelectric ceramic; 201. Concave portion; 3. Displacement transmission assembly; 301. Lever; 3011. First protrusion; 3012. Second protrusion; 302. Rotating shaft; 4. Flow channel seat; 401. Liquid flow channel; 402. Outlet Liquid hole; 403, mounting through hole; 5, nozzle member; 6, striker assembly; 601, striker member; 6011, abutment ring; 602, striker guide sleeve; 603, first spring member; 604, second spring member; 7, universal plug ring; 8, piezoelectric adjustment assembly; 801, adjustment bolt; 802, anti-loosening nut; 9, cover body; 901, air pipe connection port; 902, line connection port; 10, fixing bolt;

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution in the utility model. Obviously, what is described is only a part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications 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.

[0031] In addition, it should be noted that the descriptions of "first", "second", etc. in the present utility model 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" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] In the prior art, the striker assembly and the flow channel seat body are set up separately, and the two need to be installed and combined with each other before use; during the repeated installation process, the plug ring between the striker assembly and the flow channel seat body is easily worn, so that the liquid in the liquid flow channel adheres to the striker assembly and flows into the piezoelectric valve with the movement of the striker assembly, causing damage to the piezoelectric ceramic.

[0033] In order to solve the above technical problems, the utility model proposes a piezoelectric valve structure.

[0034] See also Figure 1-6 In one embodiment of the present utility model, the piezoelectric valve structure includes:

[0035] The valve body 1 is provided with a piezoelectric ceramic 2 and a displacement transmission component 3; wherein, since the piezoelectric ceramic 2 belongs to the prior art, the present application will not describe its structure in detail;

[0036] The flow channel seat body 4 has a liquid flow channel 401 disposed therein, and a liquid outlet hole 402 disposed at the end of the liquid flow channel 401. In this embodiment, a nozzle member 5 is installed at the liquid outlet hole 402, and the pressure of the sprayed liquid is adjusted by the nozzle member 5 so that the liquid can be sprayed out from the liquid outlet hole 402 better. The flow channel seat body 4 also includes a striker assembly 6, and the striker assembly 6 includes a striker member 601 and a striker guide sleeve 602 that are slidably connected to each other, wherein the striker member 601 is coaxially aligned with the liquid outlet hole 402, The striker guide sleeve 602 is fixedly connected to the flow channel seat body 4, and a pan-seal ring 7 is provided between the striker guide sleeve 602 and the liquid flow channel 401; the first end of the striker member 601 is used to be connected to the displacement transmission assembly 3, and the second end of the striker member 601 passes through the striker guide sleeve 602 and the pan-seal ring 7 in sequence and extends into the liquid flow channel 401; the piezoelectric ceramic 2 drives the striker member 601 to displace along its axial direction through the displacement transmission assembly 3 to push the liquid in the liquid flow channel 401 out to the liquid outlet 402.

[0037] The technical solution of the utility model is to install the striker assembly 6 on the flow channel seat body 4. Specifically, the striker assembly 6 includes a striker part 601 and a striker guide sleeve 602 which are slidably connected to each other, wherein the striker part 601 is coaxially aligned with the liquid outlet hole 402, and the striker guide sleeve 602 is fixedly connected to the flow channel seat body 4; during operation, the piezoelectric ceramic 2 is used to drive the striker part 601 to displace along its axial direction through the displacement transmission assembly 3 to push the liquid in the liquid flow channel 401 out of the liquid outlet hole 402. The striker assembly 6 is combined with the flow channel seat body 4 through the above structure, and the repeated installation process of the striker assembly 6 and the flow channel seat body 4 is reduced to avoid the wear of the flooded ring 7, which causes the liquid to flow into the inside of the piezoelectric valve and damage the piezoelectric ceramic 2.

[0038] The valve body 1 and the flow channel seat 4 are detachably connected; such a configuration facilitates the disassembly of the valve body 1 and the flow channel seat 4 for separate cleaning, provided that the striker assembly 6 and the flow channel seat 4 are combined. Figure 2 And attached Figure 5-6 , the valve body 1 and the flow channel seat 4 are connected to each other through at least three fixing bolts 10; in this embodiment, the valve body 1 and the flow channel seat 4 are connected to each other through three fixing bolts 10. In detail, a threaded hole 101 is provided in the valve body 1, and a mounting through hole 403 is provided in the flow channel seat 4. The fixing bolt 10 passes through the mounting through hole 403 and is threadedly connected with the threaded hole 101. Since the threaded connection is a detachable connection, the detachable connection between the valve body 1 and the flow channel seat 4 is realized.

[0039] As a preferred solution of the above embodiment, refer to the attached Figure 3 , the first end of the striker 601 is provided with an abutting ring 6011; the striker assembly 6 also includes a first spring member 603 and a second spring member 604, the first spring member 603 is sleeved on the outside of the striker 601, and the two ends of the first spring member 603 respectively abut the abutting ring 6011 and the striker guide sleeve 602; the second spring member 604 is sleeved on the outside of the first spring member 603, and the two ends of the second spring member 604 respectively abut the displacement transmission assembly 3 and the valve body 1. In this way, through the elastic reset effect of the first spring member 603 and the second spring member 604, when the piezoelectric ceramic 2 is in a power-off state, the striker 601 and the striker guide sleeve 602 can be restored to their original positions through the first spring member 603, and the displacement transmission assembly 3 and the valve body 1 can be restored to their original positions through the second spring member 604, so that the striker 601 and the displacement transmission assembly 3 always keep in contact, so that the piezoelectric ceramic 2 can subsequently drive the striker 601 to move through the displacement transmission assembly 3.

[0040] As a preferred solution of the above embodiment, refer to the attached Figure 3The valve body 1 is provided with a guide through hole 102. Specifically, the guide through hole 102 is coaxially arranged with the striker member 601; the first end of the striker member 601 passes through the guide through hole 102 and is connected to the displacement transmission assembly 3; at least part of the second spring member 604 is accommodated in the guide through hole 102, and the inner wall surface of the guide through hole 102 and the annular outer surface of the second spring member 604 are in contact with each other; the interior of the guide through hole 102 is provided with an abutment platform 103 extending along its axis, and the abutment platform 103 is used for the second spring member 604 to abut. In this arrangement, since the inner wall surface of the guide through hole 102 and the annular outer surface of the second spring member 604 are in contact with each other, and the guide through hole 102 and the striker member 601 are coaxially arranged, the second spring member 604 can only be compressed and elastically deformed along the inner wall surface of the guide through hole 102 under the drive of the displacement transmission component 3, thereby ensuring that the elastic direction of the second spring member 604 and the axis of the striker member 601 are parallel to each other, avoiding the deviation of the elastic direction of the second spring member 604 and the axis of the striker member 601, causing the striker member 601 to be pressed and offset by the displacement transmission component 3.

[0041] As a preferred solution of the above embodiment, refer to the attached Figure 2-3 , the displacement transmission assembly 3 includes a lever member 301, which is rotatably connected to the valve body 1 through a rotating shaft 302; the first end of the lever member 301 is connected to the second spring member 604, the second end of the lever member 301 is connected to the driving end of the piezoelectric ceramic 2, the second spring member 604 and the piezoelectric ceramic 2 are respectively arranged on opposite sides of the lever member 301, wherein the rotating shaft 302 is located on a side close to the second end of the lever member 301. In such a configuration, considering that the driving amplitude of the driving end of the piezoelectric ceramic 2 is limited, it may not meet the displacement requirements of the striker member 601; therefore, the lever member 301 is used to amplify the driving amplitude of the piezoelectric ceramic 2, thereby ensuring that the displacement amplitude of the striker member 601 meets the preset requirements. It can be understood that since the rotating shaft 302 is located on the side close to the second end of the lever member 301, and the second end of the lever member 301 is connected to the driving end of the piezoelectric ceramic 2, when the driving end of the piezoelectric ceramic 2 drives the second end of the lever member 301 to rotate slightly, the lever member 301 rotates around the rotating shaft 302, causing the first end of the lever member 301 to rotate significantly, thereby achieving the purpose of amplifying the driving amplitude of the piezoelectric ceramic 2.

[0042] Furthermore, a first protrusion 3011 is provided at the first end of the lever member 301, and the first protrusion 3011 is used for the second spring member 604 to be mounted thereon; in this way, the second spring member 604 is mounted on the outer ring of the first protrusion 3011, ensuring that during the movement of the lever member 301, the second spring member 604 and the lever member 301 always maintain contact and connection with each other.

[0043] Further, the second end of the lever member 301 is provided with a second protrusion 3012, and the second protrusion 3012 has an arc-shaped outer surface; the driving end of the piezoelectric ceramic 2 is provided with a recessed portion 201, and the recessed portion 201 has an arc-shaped inner surface; the second protrusion 3012 and the recessed portion 201 are matched in a concave-convex manner, and the arc-shaped outer surface and the arc-shaped inner surface are slidably connected with each other. In this way, on the one hand, the concave-convex matching of the second protrusion and the recessed portion 201 ensures that the driving end of the piezoelectric ceramic 2 and the lever member 301 always keep in contact with each other during the movement of the lever member 301; on the other hand, considering that the driving end of the piezoelectric ceramic 2 is a linear movement, and the second end of the lever member 301 is an arc movement, this embodiment respectively sets the arc-shaped outer surface and the arc-shaped inner surface, so that the driving end of the piezoelectric ceramic 2 drives the second end of the lever member 301 to move more smoothly, and at the same time, it can also ensure that the driving end of the piezoelectric ceramic 2 and the second end of the lever member 301 always keep in contact with each other along the arc surface.

[0044] Furthermore, the valve body 1 corresponding to the area directly below the middle of the lever 301 is provided with a through hole 104, and the through hole 104 is used for liquid to flow out. With such a configuration, even if the liquid adheres to the lever 301 through the striker assembly 6 and slides down the lever 301 to the inside of the valve body 1, since the valve body 1 corresponding to the area directly below the middle of the lever 301 is provided with a through hole 104, when the liquid slides to the middle of the lever 301, part of the liquid may drip and pass through the through hole 104 due to its own gravity, which can reduce the amount of liquid flowing into the valve body 1 on the one hand, and on the other hand, when the operator observes liquid flowing out through the through hole 104, it can be inferred that the liquid adheres to the lever 301, so that it can be cleaned in time.

[0045] As a preferred solution of the above embodiment, refer to the attached Figure 2 The valve body 1 has a receiving cavity 105, and the piezoelectric ceramic 2 is arranged in the receiving cavity 105; the end of the piezoelectric ceramic 2 away from its driving end is defined as the fixed end of the piezoelectric ceramic 2, and the valve body 1 is provided with a piezoelectric adjustment component 8, which is connected to the fixed end of the piezoelectric ceramic 2. The piezoelectric adjustment component 8 is used to ensure that the driving end of the piezoelectric ceramic 2 and the second end of the lever member 301 are in contact with each other. In this way, the piezoelectric ceramic 2 is arranged in the receiving cavity 105 to provide all-round protection for the piezoelectric ceramic 2; at the same time, in order to avoid loosening between the driving end of the piezoelectric ceramic 2 and the second end of the lever member 301 during the operation of the piezoelectric valve and affect the liquid discharge effect, the piezoelectric adjustment component 8 is arranged at the fixed end of the piezoelectric ceramic 2 in this embodiment.

[0046] The structure of the piezoelectric adjustment component 8 has various forms. In the present embodiment, the piezoelectric adjustment component 8 includes an adjustment bolt 801 and a locking nut 802. The adjustment bolt 801 is threadedly connected to the valve body 1, and the first end of the adjustment bolt 801 abuts against the fixed end of the piezoelectric ceramic 2; the second end of the adjustment bolt 801 is threadedly connected to the locking nut 802. In this way, by rotating the adjustment bolt 801, the first end of the adjustment bolt 801 pushes the piezoelectric ceramic 2 to move in the direction of the lever member 301, thereby ensuring that the driving end of the piezoelectric ceramic 2 and the second end of the lever member 301 are in contact with each other. At the same time, since the second end of the adjustment bolt 801 is threadedly connected with the locking nut 802, it is ensured that during the operation of the piezoelectric valve, the adjustment bolt 801 will not rotate by itself and cause the driving end of the piezoelectric ceramic 2 to loosen with the lever member 301.

[0047] In one embodiment, referring to the attached Figure 1-2 The piezoelectric valve structure also includes a cover 9, which is detachably connected to the valve body 1 and covers the outer side of the second end of the adjusting bolt 801; the cover 9 is provided with an air pipe connection port 901 and a line connection port 902, the line connection port 902 is used to connect a power line (not shown in the drawings) to electrically connect the power line to the piezoelectric ceramic 2; the air pipe connection port 901 is used to connect a gas pipeline (not shown in the drawings), and the gas pipeline is used to inject cooling gas into the accommodating cavity 105 to cool the piezoelectric ceramic 2. In this arrangement, by arranging the cover 9 on the outer side of the second end of the adjusting bolt 801 to cover it, it is prevented that external objects interfere with the adjusting bolt 801 and drive it to rotate. At the same time, the cover body 9 is also provided with an air pipe connection port 901 and a line connection port 902. The line connection port 902 is used to connect the power line so that the power line is electrically connected to the piezoelectric ceramic 2 to ensure that the piezoelectric ceramic 2 can be powered on and operated; the air pipe connection port 901 is used to connect the gas pipeline to inject cooling gas into the accommodating cavity 105 to cool the piezoelectric ceramic 2. In this embodiment, the cooling gas can be selected from the outside air. The outside air is injected into the accommodating cavity 105 by a blower or other equipment to achieve the purpose of cooling the piezoelectric ceramic 2.

[0048] It is understandable that in order to avoid the risk of explosion caused by continuous injection of cooling gas, which may cause expansion of the accommodating chamber 105, ventilation holes 106 are provided around the valve body 1, through which the cooling gas in the accommodating chamber 105 is discharged to the outside.

[0049] It should be noted that other contents of the piezoelectric valve structure disclosed in the present utility model are prior art and will not be described in detail here.

[0050] The above are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any direct / indirect application of the present invention in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A piezoelectric valve structure, characterized in that: include: A valve body, wherein the valve body is provided with piezoelectric ceramics and a displacement transmission component; A flow channel seat body, wherein a liquid flow channel is provided inside the flow channel seat body, and a liquid outlet is provided at the end of the liquid flow channel; the flow channel seat body also includes a striker assembly, and the striker assembly includes a striker member and a striker guide sleeve that are slidably connected to each other, wherein the striker member is coaxially aligned with the liquid outlet, the striker guide sleeve is fixedly connected to the flow channel seat body, and a pan-seal ring is provided between the striker guide sleeve and the liquid flow channel; the first end of the striker member is used to be connected to the displacement transmission assembly, and the second end of the striker member passes through the striker guide sleeve and the pan-seal ring in sequence and extends into the liquid flow channel; the piezoelectric ceramic drives the striker member to displace along its axial direction through the displacement transmission assembly to push the liquid in the liquid flow channel out to the liquid outlet.

2. The piezoelectric valve structure according to claim 1, characterized in that: The first end of the striker member is provided with an abutment ring; the striker assembly also includes a first spring member and a second spring member, the first spring member is sleeved on the outside of the striker member, and the two ends of the first spring member respectively abut the abutment ring and the striker guide sleeve; the second spring member is sleeved on the outside of the first spring member, and the two ends of the second spring member respectively abut the displacement transmission assembly and the valve body.

3. The piezoelectric valve structure according to claim 2, characterized in that: The valve body is provided with a guide through hole, and the first end of the striker member passes through the guide through hole and is connected to the displacement transmission assembly; at least part of the second spring member is accommodated in the guide through hole, and the inner wall surface of the guide through hole and the annular outer surface of the second spring member are in contact with each other; the interior of the guide through hole is provided with an abutment platform extending along its axis, and the abutment platform is used for the second spring member to abut.

4. The piezoelectric valve structure according to claim 2, wherein: The displacement transmission assembly includes a lever member, which is rotatably connected to the valve body through a rotating shaft; the first end of the lever member is connected to the second spring member, and the second end of the lever member is connected to the driving end of the piezoelectric ceramic, and the second spring member and the piezoelectric ceramic are respectively arranged on opposite sides of the lever member, wherein the rotating shaft is located on a side close to the second end of the lever member.

5. The piezoelectric valve structure according to claim 4, characterized in that: The first end of the lever member is provided with a first protrusion, and the first protrusion is used for the second spring member to be mounted; the second end of the lever member is provided with a second protrusion, and the second protrusion has an arc-shaped outer surface; the driving end of the piezoelectric ceramic is provided with a recessed portion, and the recessed portion has an arc-shaped inner surface; The second protrusion is matched with the recessed portion in a concave-convex manner, and the arcuate outer surface and the arcuate inner surface are slidably connected to each other.

6. The piezoelectric valve structure according to claim 4, characterized in that: The valve body main body corresponding to the area directly below the middle part of the lever member is provided with a through hole portion, and the through hole portion is used for allowing the liquid to flow out.

7. The piezoelectric valve structure according to claim 4, characterized in that: The valve body has a accommodating cavity, and the piezoelectric ceramic is arranged in the accommodating cavity; the end of the piezoelectric ceramic away from its driving end is defined as the fixed end of the piezoelectric ceramic, and the valve body is provided with a piezoelectric adjustment component, and the piezoelectric adjustment component is connected to the fixed end of the piezoelectric ceramic. The piezoelectric adjustment component is used to ensure that the driving end of the piezoelectric ceramic is in contact with the second end of the lever member.

8. The piezoelectric valve structure according to claim 7, characterized in that: The piezoelectric adjustment component includes an adjustment bolt and a locking nut. The adjustment bolt is threadedly connected to the valve body, and the first end of the adjustment bolt abuts against the fixed end of the piezoelectric ceramic; the second end of the adjustment bolt is threadedly connected to the locking nut.

9. The piezoelectric valve structure according to claim 8, characterized in that: The piezoelectric valve structure also includes a cover body, which is detachably connected to the valve body and covers the outer side of the second end of the adjusting bolt; the cover body is provided with an air pipe connection port and a line connection port, the line connection port is used to connect a power cord to electrically connect the power cord to the piezoelectric ceramic; the air pipe connection port is used to connect a gas pipeline, and a cooling gas is injected into the accommodating cavity by the gas pipeline to cool the piezoelectric ceramic.

10. The piezoelectric valve structure according to claim 1, wherein: The valve body and the flow channel seat are detachably connected; specifically, the valve body and the flow channel seat are connected to each other via at least three fixing bolts.

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