Piezoelectric injection valve

Abstract

The invention relates to a piezoelectric injection valve which comprises a valve body, a flow channel assembly and an adjusting assembly. Wherein a clamping assembly is arranged on the surface of the valve body, an avoiding position is formed in the clamping assembly, and an inclined groove is formed in the side wall of the valve body; the flow channel assembly is detachably connected to the avoiding position, and the flow channel assembly is connected with the clamping assembly in a clamped mode; the adjusting assembly comprises an abutting part, one side of the abutting part abuts against the flow channel assembly, the side face, abutting against the flow channel assembly, of the abutting part is marked as a first side face, the side face, opposite to the first side face, of the abutting part is marked as a second side face, the second side face is attached to the bottom face of the inclined groove, and the abutting part can move in the length direction of the inclined groove. The abutting piece can move in the direction close to the flow channel assembly when moving along the inclined groove, so that the flow channel assembly and the clamping assembly are clamped more tightly. And the clamping degree of the flow channel assembly and the clamping assembly can be adjusted by adjusting the abutting piece according to the gap between the flow channel assembly and the valve body, so that it is ensured that the flow channel assembly is tightly matched with the valve body, and the service life is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of fluid injection devices, and in particular to a piezoelectric injection valve. Background Art

[0002] With the development of fluid injection device technology, piezoelectric injection valves have emerged. Piezoelectric injection valves can realize functions such as dispensing and painting. Piezoelectric injection valves are usually equipped with a flow channel assembly. The fluid material enters the flow channel assembly through the feed port of the flow channel assembly. By applying voltage to the piezoelectric sheet in the valve body, the piezoelectric sheet is deformed. The deformation of the piezoelectric sheet can drive the movement of related structures (such as push rods, etc.) in the flow channel assembly, thereby causing the pressure of the fluid material in the flow channel assembly to change, and the fluid material can be sprayed out to the specified position through the discharge port on the flow channel assembly to complete operations such as dispensing and painting.

[0003] In the related art, the flow channel assembly needs to be frequently maintained or replaced due to frequent use to ensure the normal operation of the piezoelectric injection valve. To facilitate the maintenance of the flow channel assembly, the flow channel assembly and the valve body are usually separated, thereby saving time for disassembling and assembling the flow channel assembly.

[0004] However, the above-mentioned split setting method requires assembly of the flow channel assembly and the valve body when the piezoelectric injection valve is needed, and the installation process is relatively cumbersome. In addition, due to long-term disassembly and assembly operations or improper disassembly and assembly operations, the flow channel assembly and the valve body will not fit tightly, and there will be a gap between the flow channel assembly and the valve body, which will increase the risk of the flow channel assembly detaching from the valve body and leakage at the connection between the flow channel assembly and the valve body. It is usually necessary to replace the flow channel assembly that can cooperate with the snap-on assembly, resulting in a shorter service life. Summary of the invention

[0005] Based on this, it is necessary to provide a piezoelectric injection valve to address the above-mentioned problem of unstable installation.

[0006] A piezoelectric injection valve, comprising:

[0007] A valve body, wherein a clamping assembly is provided on the surface of the valve body, an escape position is provided on the clamping assembly, and an inclined groove is provided on the side wall of the valve body;

[0008] A flow channel assembly is detachably connected to the avoidance position, the flow channel assembly is clamped with the clamping assembly, and the flow channel assembly is connected with the valve body;

[0009] An adjusting component is connected to the valve body; the adjusting component includes an abutment member, one side of which abuts against the flow channel component, the side on which the abutment member abuts against the flow channel component is recorded as a first side, and the side of the abutment member opposite to the first side is recorded as a second side, the second side is inclined relative to the first side, the second side is in contact with the bottom surface of the inclined groove, and the abutment member can move along the length direction of the inclined groove.

[0010] In some embodiments, the snap-in assembly includes a snap-in block, which is arranged on one side of the valve body and connected to the outer wall of the valve body. The snap-in block is provided with a snap-in groove matching the flow channel assembly, and the flow channel assembly is snap-into the snap-in groove.

[0011] In some embodiments, the adjustment assembly also includes a fixing member, a knob and a push rod, wherein the fixing member is connected to the valve body; the fixing member is provided with a through hole, the push rod is inserted into the through hole, one end of the push rod is connected to the knob, the abutment member is connected to the other end of the push rod, and the knob drives the push rod to move along the length direction of the through hole.

[0012] In some embodiments, the regulating assembly further includes a return spring, one end of the return spring is connected to the valve body, and the other end of the return spring is connected to the abutment member.

[0013] In some embodiments, the adjustment assembly further includes a telescopic spring, one end of the telescopic spring is connected to the fixing member, and the other end of the telescopic spring is connected to the abutting member.

[0014] In some of the embodiments, the piezoelectric injection valve further includes a heat dissipation component, and the heat dissipation component is in contact with the side wall of the valve body.

[0015] In some embodiments, the heat dissipation assembly includes a heat dissipation shell, which is in contact with the side wall of the valve body; a curved heat dissipation pipeline is provided in the heat dissipation shell, and the heat dissipation shell is provided with a liquid inlet and a liquid outlet, the liquid inlet is connected to one end of the heat dissipation pipeline, and the liquid outlet is connected to the other end of the heat dissipation pipeline.

[0016] In some embodiments, the diameter of the heat dissipation pipeline is smaller than the aperture of the liquid inlet.

[0017] In some embodiments, the flow channel assembly includes a flow channel body and a positioning pin, the positioning pin is connected to the flow channel body, and the flow channel body is connected to the valve body; the valve body is provided with a positioning pin hole, and the positioning pin is inserted into the positioning pin hole.

[0018] In some embodiments, the positioning pin includes a plug-in portion, a telescopic portion and a connecting portion which are connected in sequence, the connecting portion is connected to the flow channel body, the side wall of the plug-in portion abuts against the inner wall of the positioning pin hole, and the telescopic portion can adjust the distance between the plug-in portion and the connecting portion.

[0019] In the above-mentioned piezoelectric injection valve, the flow channel assembly is detachably connected to the valve body, and the external fluid material is passed into the flow channel assembly through the feed port, and the fluid material inside the flow channel assembly is ejected through the discharge port. By setting an avoidance position on the valve body, positioning is provided for the installation of the flow channel assembly, so that the flow channel assembly and the clamping assembly are clamped and fixed. Since the second side surface is in contact with the bottom surface of the inclined groove, and the first side surface is located on the opposite side of the second side surface, when the abutment moves along the inclined groove, the abutment can move in the direction close to the flow channel assembly, so that the flow channel assembly and the clamping assembly are clamped more tightly; and the clamping degree of the flow channel assembly and the clamping assembly can be adjusted by adjusting the position of the abutment in the inclined groove, thereby being able to be adjusted according to the gap between the flow channel assembly and the valve body to ensure that the flow channel assembly and the valve body are tightly matched and the service life is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front structure of a valve body of an embodiment of a piezoelectric injection valve of the present application.

[0021] Figure 2 This is a cross-sectional view of a piezoelectric injection valve in an embodiment of the present application at a plane passing through an abutment member.

[0022] Figure 3 An embodiment of a piezoelectric injection valve of the present application Figure 2 A partial enlarged view of point A in the middle.

[0023] Figure 4 This is a schematic structural diagram of the side surface of a valve body in an embodiment of a piezoelectric injection valve of the present application.

[0024] Figure 5 This is a schematic diagram of the installation process of a flow channel assembly in an embodiment of a piezoelectric injection valve of the present application.

[0025] Figure 6 This is a schematic structural diagram of an adjusting component in an embodiment of a piezoelectric injection valve of the present application.

[0026] Figure 7 This is a schematic diagram of the structure inside the heat dissipation housing in an embodiment of a piezoelectric injection valve of the present application.

[0027] Figure 8 This is a schematic structural diagram of a flow channel assembly in an embodiment of a piezoelectric injection valve of the present application.

[0028] In the figure, 100, valve body; 101, inclined groove; 102, positioning pin hole; 110, snap-fit ​​assembly; 111, avoidance position; 112, snap-fit ​​block; 113, snap-fit ​​groove; 200, flow channel assembly; 201, feed inlet; 202, discharge outlet; 210, flow channel body; 220, positioning pin; 221, plug-in part; 222, telescopic part; 223, connecting part; 300, adjustment assembly; 310, abutment; 311, slide groove; 320, fixing part; 330, knob; 340, push rod; 350, reset spring; 360, telescopic spring; 400, heat dissipation assembly; 410, heat dissipation shell; 411, liquid inlet; 412, liquid outlet; 420, heat dissipation pipeline. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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 this application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0035] See also Figure 1 , Figure 1The front structural schematic diagram of a piezoelectric injection valve in an embodiment of the present application is shown. A piezoelectric injection valve provided in an embodiment of the present application includes a valve body 100, a flow channel assembly 200 and an adjustment assembly 300. Among them, a clamping assembly 110 is provided on the surface of the valve body 100, and the clamping assembly 110 is provided with an avoidance position 111, and a slanted groove 101 is provided on the side wall of the valve body 100. The flow channel assembly 200 is detachably connected to the avoidance position 111, and the flow channel assembly 200 is clamped with the clamping assembly 110, and the flow channel assembly 200 is connected to the valve body 100. The regulating component 300 is connected to the valve body 100; the regulating component 300 includes an abutment member 310, one side of which abuts against the flow channel component 200, the side on which the abutment member 310 abuts against the flow channel component 200 is recorded as the first side, and the side of the abutment member 310 opposite to the first side is recorded as the second side, the second side is inclined relative to the first side, the second side is in contact with the bottom surface of the inclined groove 101, and the abutment member 310 can move along the length direction of the inclined groove 101.

[0036] It should be noted here that the fluid material to be injected enters the interior of the flow channel assembly 200 through the feed port 201 of the flow channel assembly 200. The flow channel assembly 200 can store a certain amount of fluid material. A piezoelectric sheet is provided inside the valve body 100. By applying voltage to the piezoelectric sheet, the piezoelectric sheet can be deformed. A conductive structure is provided inside the valve body 100 to amplify the deformation of the piezoelectric sheet. Since the valve body 100 is connected to the flow channel assembly 200, the corresponding structure (push rod, etc.) in the flow channel assembly 200 can be driven by the conductive structure, so that the pressure of the fluid material inside the flow channel assembly 200 changes, and the fluid material is ejected from the discharge port 202 on the flow channel assembly 200, thereby achieving the purpose of injecting the fluid material.

[0037] See also Figure 1 , Figure 2 , Figure 3 and Figure 4Preferably, the discharge port 202 is opened at one end of the flow channel assembly 200, the feed port 201 is opened at the other end of the flow channel assembly 200, the clamping assembly 110 is arranged on the lower side of the valve body 100, and the flow channel assembly 200 corresponds to the clamping assembly 110 arranged on one side of the lower side of the valve body 100. The fluid material to be injected enters the flow channel assembly 200 through the feed port 210, and flows to the discharge port 202 through the pipeline inside the flow channel assembly 200. The flow channel assembly 200 is installed in the avoidance position 111 and is clamped with the clamping assembly 110, so that the flow channel assembly 200 is not easy to fall during the use of the piezoelectric injection valve, ensuring the overall stability of the piezoelectric injection valve when in use. The adjustment assembly 300 is connected to the valve body 100, and the abutment 310 abuts against the side of the flow channel assembly 200, so that the flow channel assembly 200 and the clamping assembly 110 are tightly clamped. The inclined groove 101 is opened on the lower side surface of the valve body 100. Since the bottom surface and the second side surface of the inclined groove 101 are inclined relative to the first side surface, when the abutment 310 moves along the inclined groove 101, due to the squeezing of the bottom surface of the inclined groove 101, the abutment 310 will approach or move away from the flow channel assembly 200 along the bottom surface of the inclined groove 101, so as to adjust the position of the abutment 310 in the inclined groove 101 according to the actual distance between the flow channel assembly 200 and the clamping assembly 110, so that the flow channel assembly 200 and the clamping assembly 110 are clamped.

[0038] When using the piezoelectric injection valve, install the flow channel assembly 200 to the avoidance position 111 and engage it with the clamping assembly 110, and confirm that the flow channel assembly 200 and the clamping assembly 110 are stably engaged. At this time, the abutment 310 is located outside the inclined groove 101 or at the end of the inclined groove 101 away from the flow channel assembly 200 to prevent the abutment 310 from obstructing the installation of the flow channel assembly 200. After the flow channel assembly 200 is installed to the specified position, adjust the abutment 310 to move toward one end of the inclined groove 101 close to the flow channel assembly 200. As the abutment 310 moves in the inclined groove 101, the first side moves in the direction close to the flow channel assembly 200, so that the clamping of the flow channel assembly 200 and the clamping assembly 110 is tighter and not easy to fall off. If the flow channel assembly 200 has a gap with the clamping assembly 110 due to long-term disassembly and assembly, and cannot be stably clamped, the abutment member 310 can fill this gap to ensure that the flow channel assembly 200 and the clamping assembly 110 are stably clamped.

[0039] The above arrangement enables the flow channel assembly 200 to be stably installed, ensuring the normal use of the piezoelectric injection valve, and is suitable for situations where the flow channel assembly and the clamping assembly are not tightly connected due to long-term disassembly and assembly operations, effectively improving the service life of the flow channel assembly structure.

[0040] In addition, the second side surface and the bottom surface of the chute 101 can be set at a specific angle to achieve self-locking of the abutment 310 without external force, thereby enhancing the clamping ability of the flow channel assembly 200, so that the clamping of the flow channel assembly 200 and the clamping assembly 110 is tighter and not easy to fall off. In this embodiment, the bottom surface of the chute 101 and the abutment 310 are made of stainless steel, and self-locking can be achieved according to the following formula.

[0041] μ≥tanθ

[0042] Wherein μ is the static friction coefficient when the bottom surface of the chute 101 contacts the abutment 310, θ is the inclination angle of the chute 101, the chute 101 and the abutment 310 are both made of stainless steel, and the static friction coefficient of both is 0.3, then θ≤16.6°. In the embodiment of the present application, θ is set to 11° to achieve self-locking, enhance the clamping ability of the flow channel assembly 200, so that the clamping of the flow channel assembly 200 and the clamping assembly 110 is tighter and not easy to fall off.

[0043] Therefore, the inclination angle of the second side surface relative to the first side surface can be set to 11°, so as to realize self-locking between the second side surface and the bottom surface of the inclined groove 101. This can prevent the abutment member 310 from sliding during the use of the piezoelectric injection valve, thereby causing the flow channel assembly 200 to loosen or even fall off.

[0044] It should be noted that the above method is only an example, and the user can set it according to the actual material and usage to achieve the same technical purpose. In other embodiments, if the materials used for the bottom surface of the inclined groove 101 and the abutment member 310 are changed, the inclination angle of the inclined groove 101 can be set according to the static friction coefficient of the two materials to achieve self-locking.

[0045] In some of the embodiments, the snap-in assembly 110 includes a snap-in block 112, which is disposed on one side of the valve body 100 and connected to the outer wall of the valve body 100. The snap-in block 112 is provided with a snap-in groove 113 matching the flow channel assembly 200, and the flow channel assembly 200 is snap-into the snap-in groove 113.

[0046] See also Figure 1 and Figure 4 Preferably, there are two clamping blocks 112, both of which are arranged on the lower side of the valve body 100 and connected to the lower side of the valve body 100, both of which are provided with a clamping groove 113, and the avoidance position 111 is arranged between the two clamping blocks 112. Figure 5 When installing the flow channel assembly 200, first install the flow channel assembly 200 with Figure 5 a is installed to the avoidance position 111, and the flow channel assembly 200 rotates at the avoidance position 111, as shown in FIG. Figure 5c, after the rotation, the flow channel assembly 200 is engaged in the engaging groove 113, and the flow channel assembly 200 is not easy to be separated from the valve body 100, so that the flow channel assembly 200 is fixed. Through the above arrangement, the installation process of the flow channel assembly 200 is made simpler and faster, and the disassembly and assembly efficiency of the flow channel assembly 200 is improved while ensuring the installation stability of the flow channel assembly 200.

[0047] In some of the embodiments, the adjustment assembly 300 also includes a fixing member 320, a knob 330 and a push rod 340, the fixing member 320 is connected to the valve body 100; the fixing member 320 is provided with a through hole, the push rod 340 is inserted into the through hole, one end of the push rod 340 is connected to the knob 330, the abutment member 310 is connected to the other end of the push rod 340, and the knob 330 drives the push rod 340 to move along the length direction of the through hole.

[0048] See also Figure 2 , Figure 3 , Figure 4 and Figure 6 Preferably, the fixing member 320 is fixedly connected to the valve body 100, the push rod 340 is threadedly connected to the inner wall of the through hole, and the knob 330 drives the push rod 340 to rotate to adjust the position of the push rod 340 in the through hole. When the flow channel assembly 200 needs to be clamped, the knob 330 is turned to move the push rod 340 in the direction close to the fixing member 320, and the abutment member 310 approaches and clamps the flow channel assembly 200 under the pressure of the chute 101. When the flow channel assembly 200 needs to be disassembled, the knob 330 is rotated in the opposite direction to drive the push rod 340 to move in the direction away from the fixing member 320, and the abutment member 310 is not squeezed by the chute 101, so that the flow channel assembly 200 is easy to disassemble. Through the above arrangement, the position of the abutment member 310 in the chute 101 can be adjusted simply and quickly, thereby adjusting the clamping degree of the flow channel assembly 200 and the clamping assembly 110.

[0049] In some of the embodiments, the adjustment assembly 300 further includes a return spring 350 , one end of the return spring 350 is connected to the valve body 100 , and the other end of the return spring 350 is connected to the abutment 310 .

[0050] See also Figure 2 , Figure 3 , Figure 4 and Figure 6 Preferably, the return spring 350 is arranged along the moving direction of the push rod 340, and the return spring 350 is used to provide a thrust away from the valve body 100. When the push rod 340 moves toward the direction close to the fixing member 320, the abutment member 310 squeezes the return spring 350, and when the push rod 340 needs to move away from the fixing member 320, the return spring 350 can push the abutment member 310 and the push rod 340, making the operation more labor-saving.

[0051] In addition, by setting a reset spring 350, the push rod 340 does not need to be threadedly connected to the inner wall of the through hole. It only needs to ensure that the push rod 340 can be fixed when it is moved to a suitable position. For example, a buckle is set at the through hole. When the flow channel assembly 200 needs to be clamped, it is only necessary to push the knob 330 to move the abutment 310 to a suitable position, and then fix the push rod 340 by the buckle. When the flow channel assembly 200 needs to be removed, the buckle is released, and the abutment 310 can be returned to the position where the flow channel assembly 200 is not clamped by the reset spring 350. The operation is simple and convenient.

[0052] In some of the embodiments, the adjustment assembly 300 further includes a telescopic spring 360 , one end of the telescopic spring 360 is connected to the fixing member 320 , and the other end of the telescopic spring 360 is connected to the abutting member 310 .

[0053] See also Figure 2 , Figure 3 , Figure 4 and Figure 6 Preferably, a slide groove 311 is provided at the connection between the abutment member 310 and the push rod 340, and the push rod 340 is engaged in the slide groove 311 and can slide along the length direction of the slide groove 311. By setting the slide groove 311, the abutment member 310 can move in the direction close to or away from the flow channel assembly 200 (in this embodiment, it is a direction perpendicular to the push rod 340). The length direction of the telescopic spring 360 is the same as the direction close to or away from the flow channel assembly 200. When the abutment member 310 is squeezed by the chute 101 and moves in the direction close to the flow channel assembly 200, the telescopic spring 360 is stretched. When the push rod 340 drives the abutment member 310 to move in the direction away from the fixing member 320, the telescopic spring 360 restores and pulls the abutment member 310 to move in the direction away from the flow channel assembly 200 (even if the second side surface remains in contact with the bottom surface of the chute 101), ensuring that the abutment member 310 can be separated from the flow channel assembly 200, so as to facilitate the disassembly of the flow channel assembly 200.

[0054] In some of the embodiments, the piezoelectric injection valve further includes a heat dissipation component 400 , and the heat dissipation component 400 is in contact with the side wall of the valve body 100 .

[0055] See also Figure 1 and Figure 7 Preferably, the heat dissipation component 400 is fitted with the side of the valve body 100 with a larger surface area to ensure full contact and improve the heat dissipation effect.

[0056] In some of the embodiments, the heat dissipation assembly 400 includes a heat dissipation shell 410, which is in contact with the side wall of the valve body 100; a curved heat dissipation pipeline 420 is provided in the heat dissipation shell 410, and the heat dissipation shell 410 is provided with a liquid inlet 411 and a liquid outlet 412, the liquid inlet 411 is connected to one end of the heat dissipation pipeline 420, and the liquid outlet 412 is connected to the other end of the heat dissipation pipeline 420.

[0057] See also Figure 1 and Figure 7 Preferably, the heat dissipation pipeline 420 is bent to cover the interior of the heat dissipation housing 410, and the side wall of the heat dissipation pipeline 420 is in contact with the inner wall of the heat dissipation housing 410 to conduct heat. The heat dissipation pipeline 420 can also be spaced apart from the inner wall of the heat dissipation housing 410, and a heat conductive material is filled between the heat dissipation pipeline 420 and the heat dissipation housing 410 to conduct heat. The cooling fluid enters the heat dissipation pipeline 420 through the liquid inlet 411. The cooling fluid can be water, coolant or air. The cooling fluid enters the heat dissipation pipeline 420 to cool the valve body 100 and is discharged through the liquid outlet 412. When the valve body 100 is working, the cooling fluid with a lower external temperature continuously enters the heat dissipation pipeline 420 through the liquid inlet 411, so that the temperature of the valve body 100 is kept at a low level when working.

[0058] In addition, a circulation device may be provided, and the fluid with a relatively high temperature discharged from the liquid outlet 412 is cooled by the circulation device and then introduced into the liquid inlet 411 again after cooling, so that the cooling fluid can be recycled.

[0059] In some embodiments, the diameter of the heat dissipation pipeline 420 is smaller than the diameter of the liquid inlet 411 .

[0060] See also Figure 7 Preferably, through the above-mentioned arrangement, since the diameter of the heat dissipation pipeline 420 is small, when the cooling fluid enters the heat dissipation pipeline 420 through the liquid inlet 411, the flow rate of the cooling fluid will be relatively increased, that is, the flow rate of the cooling fluid in the heat dissipation pipeline 420 is greater than the flow rate at the liquid inlet 411, which can improve the heat dissipation effect to a certain extent.

[0061] In some of the embodiments, the flow channel assembly 200 includes a flow channel body 210 and a positioning pin 220 , the positioning pin 220 is connected to the flow channel body 210 , and the flow channel body 210 is connected to the valve body 100 ; the valve body 100 is provided with a positioning pin hole 102 , and the positioning pin 220 is inserted into the positioning pin hole 102 .

[0062] See also Figure 4 and Figure 8Preferably, the structure (push rod, etc.) for controlling the fluid material injection in the flow channel assembly 200 is arranged in the flow channel body 210, and the positioning pin 220 is sleeved on the outer periphery of the partial structure of the flow channel body 210, so that the partial structure of the flow channel body 210 is exposed at the middle position of the end face of the positioning pin 220. When the positioning pin 220 is inserted into the positioning pin hole 102, the partial structure of the flow channel body 210 exposed from the positioning pin 220 is connected to the bottom wall of the positioning pin hole 102, so that the piezoelectric sheet in the valve body 100 can drive the structure for controlling the fluid material injection in the flow channel body 210 to work normally. Through the above arrangement, it is possible to provide positioning when the flow channel assembly 200 is installed, improve the stability and efficiency of the installation of the flow channel assembly 200, and facilitate the operation of the user.

[0063] In some embodiments, the positioning pin 220 includes a plug-in portion 221, a telescopic portion 222 and a connecting portion 223 which are connected in sequence, the connecting portion 223 is connected to the flow channel body 210, the side wall of the plug-in portion 221 abuts against the inner wall of the positioning pin hole 102, and the telescopic portion 222 can adjust the distance between the plug-in portion 221 and the connecting portion 223.

[0064] See also Figure 4 and Figure 8 Preferably, one end of the connecting portion 223 is fixedly connected to the outer wall of the flow channel body 210, the other end of the connecting portion 223 is connected to one end of the telescopic portion 222, the other end of the telescopic portion 222 is connected to one end of the plug-in portion 221, and the telescopic portion 222 is spring-loaded. When the positioning pin 220 is inserted into the positioning pin hole 102, the plug-in portion 221 abuts against the bottom wall of the positioning pin hole 102 under the elastic force of the telescopic portion 222, so that regardless of whether the flow channel assembly 200 and the clamping assembly 110 are clamped, the plug-in portion 221 can abut against the bottom wall of the positioning pin hole 102 to ensure that the positioning of the positioning pin 220 can be achieved and accurate.

[0065] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A piezoelectric injection valve, characterized in that: include: The valve body has a clamping assembly on its surface, the clamping assembly is provided with an avoidance position, and the side wall of the valve body is provided with an inclined groove; A flow channel assembly is detachably connected to the avoidance position, the flow channel assembly is clamped with the clamping assembly, and the flow channel assembly is connected with the valve body; An adjusting component is connected to the valve body, and the adjusting component includes an abutment member, one side of which abuts against the flow channel component, the side on which the abutment member abuts against the flow channel component is recorded as a first side, and the side of the abutment member opposite to the first side is recorded as a second side, the second side is inclined relative to the first side, the second side is in contact with the bottom surface of the inclined groove, and the abutment member can move along the length direction of the inclined groove.

2. The piezoelectric injection valve according to claim 1, characterized in that The clamping assembly includes a clamping block, which is arranged on one side of the valve body and connected to the outer side wall of the valve body. The clamping block is provided with a clamping groove matching the flow channel assembly, and the flow channel assembly is clamped in the clamping groove.

3. The piezoelectric injection valve according to claim 1, characterized in that The adjustment assembly also includes a fixing part, a knob and a push rod, wherein the fixing part is connected to the valve body; the fixing part is provided with a through hole, the push rod is inserted into the through hole, one end of the push rod is connected to the knob, the abutment part is connected to the other end of the push rod, and the knob drives the push rod to move along the length direction of the through hole.

4. The piezoelectric injection valve according to claim 3, characterized in that The regulating assembly further comprises a return spring, one end of which is connected to the valve body, and the other end of which is connected to the abutment member.

5. The piezoelectric injection valve according to claim 3, characterized in that The adjustment component also includes a telescopic spring, one end of which is connected to the fixing member, and the other end of which is connected to the abutting member.

6. The piezoelectric injection valve according to claim 1, characterized in that It also includes a heat dissipation component, which is in contact with the side wall of the valve body.

7. The piezoelectric injection valve according to claim 6, characterized in that The heat dissipation assembly includes a heat dissipation shell, which is fitted with the side wall of the valve body; a curved heat dissipation pipeline is provided in the heat dissipation shell, and the heat dissipation shell is provided with a liquid inlet and a liquid outlet, the liquid inlet is connected to one end of the heat dissipation pipeline, and the liquid outlet is connected to the other end of the heat dissipation pipeline.

8. The piezoelectric injection valve according to claim 7, characterized in that The diameter of the heat dissipation pipeline is smaller than the aperture of the liquid inlet.

9. The piezoelectric injection valve according to claim 1, characterized in that The flow channel assembly includes a flow channel body and a positioning pin, the positioning pin is connected to the flow channel body, and the flow channel body is connected to the valve body; the valve body is provided with a positioning pin hole, and the positioning pin is inserted into the positioning pin hole.

10. The piezoelectric injection valve according to claim 9, characterized in that The positioning pin includes a plug-in portion, a telescopic portion and a connecting portion which are connected in sequence, the connecting portion is connected to the flow channel body, the side wall of the plug-in portion abuts against the inner wall of the positioning pin hole, and the telescopic portion can adjust the distance between the plug-in portion and the connecting portion.

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