Piezoelectric injection valve capable of being quickly disassembled and assembled

Abstract

The utility model discloses a piezoelectric injection valve capable of being quickly assembled and disassembled, which comprises a base body, a first connecting block, a second connecting block and a piezoelectric injection valve, the fluid seat is mounted at the bottom end of the base body and is provided with a second connecting block clamped with the first connecting block; the fastener is used for fixing the second connecting block on the first connecting block; the nozzle is assembled on the fluid seat along the z direction; the fluid seat can rotate in the xy plane around the axis of the nozzle, and when the second connecting block is clamped to the first connecting block, the second connecting block is fixed through the fastener, so that fixation between the fluid seat and the base body is achieved. Through the structural improvement, the disassembly and assembly steps between the fluid seat and the base body can be simplified, and the disassembly and assembly efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of piezoelectric valves, in particular to a piezoelectric injection valve which can be quickly disassembled and assembled. Background Art

[0002] The piezoelectric injection valve uses the characteristics of piezoelectric materials to generate mechanical force through voltage to open and close the valve. Because the space for the switch valve is extremely small and the piezoelectric operation frequency is extremely high, it can spray extremely small amounts of liquid materials at high speed. Therefore, it is widely used in dispensing operations in the electronics industry.

[0003] In the prior art, the valve body and the flow channel assembly of the piezoelectric injection valve are mainly fixed by screws. The screws need to be screwed in from the bottom up. During assembly, the flow channel assembly needs to be supported by hand, and then the screws are screwed in from the bottom. When disassembling or replacing the flow channel assembly (especially when the piezoelectric injection valve has been installed inside the dispensing equipment), the staff needs to lower their heads to find the position of the screws before disassembling. Therefore, the existing disassembly and assembly method between the valve body and the flow channel assembly is very inconvenient in operation and needs to be improved. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, the utility model provides a piezoelectric injection valve that can be quickly disassembled and assembled, which can simplify the disassembly and assembly steps between the flow channel seat and the base body, and is conducive to improving the disassembly and assembly efficiency.

[0006] According to the embodiment of the utility model, the piezoelectric injection valve that can be quickly disassembled and assembled includes: a base, the bottom end of the base is provided with a first connecting block; a fluid seat, the fluid seat is installed at the bottom end of the base and is provided with a second connecting block that engages with the first connecting block; a fastener, the fastener is used to fix the second connecting block on the first connecting block; the nozzle, the nozzle is assembled on the fluid seat along the z direction; the fluid seat can rotate around the axis of the nozzle in the xy plane, and when the second connecting block is engaged with the first connecting block, it is fixed by the fastener to achieve fixation between the fluid seat and the base.

[0007] The beneficial effect of the utility model is that, by setting a first connection block at the bottom end of the base and setting a second connection block on the fluid seat, when assembling the fluid seat, the second connection block is fixed to the first connection block by a fastener, so that the fluid seat and the base can be fixed; the fluid seat can rotate around the axis of the nozzle, and when disassembling the fluid seat, the fastener is loosened and the second connection block is separated from the first connection block. The utility model can simplify the disassembly and assembly steps between the fluid seat and the base through structural improvement, which is conducive to improving the disassembly and assembly efficiency.

[0008] According to an embodiment of the utility model, a first abutting surface is provided on a side of the first connecting block close to the second connecting block, and a second abutting surface matching the first abutting surface is provided on a side of the second connecting block close to the first connecting block.

[0009] According to an embodiment of the present invention, both the first abutting surface and the second abutting surface are inclined surfaces, and the first abutting surface is parallel to the second abutting surface.

[0010] According to an embodiment of the utility model, a contact boss is provided at the top end of the second connecting block.

[0011] According to an embodiment of the utility model, the fluid seat further comprises: a mounting portion, the mounting portion is fixedly connected to the second connecting block, and the nozzle is connected to the mounting portion.

[0012] According to an embodiment of the present invention, a supporting portion is provided at the bottom end of the first connecting block, and the supporting portion extends in a direction close to the second connecting block.

[0013] According to one embodiment of the utility model, a first plane is provided on one side of the second connecting block close to the first connecting block, and one side of the first plane is connected to the second abutting surface; the distance between the first plane and the upper end surface of the abutting boss is h, and the distance between the supporting portion and the bottom end surface of the base is H, h<H.

[0014] According to an embodiment of the present invention, a first connection hole is formed on the first connection block, a second connection hole is formed on the second connection block, and the fastener can penetrate the second connection hole and the first connection hole along the x direction.

[0015] According to an embodiment of the utility model, the fastener is a screw, the inner wall of the first connecting hole is provided with an internal thread, and the fastener passes through the second connecting hole and is threadedly connected to the first connecting hole.

[0016] According to an embodiment of the utility model, the screw includes: a limiting portion and a connecting portion, the limiting portion is fixedly connected to the connecting portion, and an end of the connecting portion away from the limiting portion is provided with an external thread.

[0017] According to one embodiment of the utility model, the second connecting hole includes: a first part and a second part, the first part is connected to the second part, the inner wall of the first part is provided with an internal thread, and the inner wall of the second part is not threaded, when the connecting part is detached from the first connecting hole and the external thread of the connecting part is located in the second part, the internal thread of the first part can prevent the screw from falling.

[0018] According to an embodiment of the present invention, the fastener is a buckle, and the buckle clamps the second connecting block and the first connecting block in the x direction.

[0019] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures specifically pointed out in the description, claims and drawings.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a structural schematic diagram of a piezoelectric injection valve (with the fluid seat and the base body locked) that can be quickly disassembled and assembled according to the utility model.

[0023] Figure 2 It is a structural schematic diagram of a piezoelectric injection valve (fluid seat and base body opened) that can be quickly disassembled and assembled according to the utility model.

[0024] Figure 3 It is a cross-sectional view of the first connecting block and the second connecting block of the utility model.

[0025] Figure 4 It is a structural schematic diagram of the first connecting hole and the second connecting hole of the utility model.

[0026] Figure 5 It is a cross-sectional view of the piezoelectric injection valve that can be quickly disassembled and assembled according to the utility model.

[0027] Figure 6 It is a structural schematic diagram of the first connecting block of the utility model.

[0028] Figure 7 It is a structural schematic diagram of the fluid seat of the utility model.

[0029] Figure 8 It is a structural schematic diagram of a fastener (a screw) of the utility model.

[0030] Fig. 9 It is a structural schematic diagram of the fastener (a buckle) of the utility model.

[0031] In the figure: 1, base; 2, fluid seat; 3, nozzle; 4, fastener; 11, first connecting block; 111, first abutting surface; 112, first connecting hole; 113, supporting portion; 21, second connecting block; 22, mounting portion; 211, second abutting surface; 212, abutting boss; 213, second connecting hole; 214, first plane; 2131, first part; 2132, second part; 41, limiting portion; 42, connecting portion. DETAILED DESCRIPTION

[0032] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0033] In the description of the present utility model, it is necessary to understand that 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" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] like Figures 1 to 8As shown, the piezoelectric injection valve that can be quickly disassembled and assembled of the utility model includes: a base 1, a fluid seat 2, a nozzle 3 and a fastener 4. The bottom end of the base 1 is provided with a first connecting block 11, the fluid seat 2 is installed at the bottom end of the base 1, and is provided with a second connecting block 21 that is engaged with the first connecting block 11. The fastener 4 is used to fix the second connecting block 21 on the first connecting block 11. The nozzle 3 is assembled on the fluid seat 2 along the z direction. The fluid seat 2 can rotate around the axis of the nozzle 3 in the xy plane. When the second connecting block 21 is engaged with the first connecting block 11, it is fixed by the fastener 4 to achieve fixation between the fluid seat 2 and the base 1.

[0036] In other words, the utility model sets the first connection block 11 on the bottom end surface of the base 1 and sets the second connection block 21 on the fluid seat 2. When assembling, the second connection block 21 is placed opposite to the first connection block 11, and the second connection block 21 and the first connection block 11 are fixed by the fastener 4. When disassembling, the staff removes the fastener 4 to separate the first connection block 11 and the second connection block 21, and the fluid seat 2 can be quickly removed. The utility model can realize quick assembly and quick disassembly between the fluid seat 2 and the base 1 through structural improvement.

[0037] It should be noted that the x direction is the front-to-back direction of the piezoelectric injection valve that can be quickly disassembled, the y direction is the left-right direction of the piezoelectric injection valve that can be quickly disassembled, and the z direction is the up-down direction of the piezoelectric injection valve that can be quickly disassembled. For example, the first connecting block 11 and the base 1 are integrally formed.

[0038] Specifically, a first abutting surface 111 is provided on one side of the first connecting block 11 close to the second connecting block 21, and a second abutting surface 211 matching with the first abutting surface 111 is provided on one side of the second connecting block 21 close to the first connecting block 11. Both the first abutting surface 111 and the second abutting surface 211 are inclined surfaces, and the first abutting surface 111 is parallel to the second abutting surface 211. An abutting boss 212 is provided at the top of the second connecting block 21. The first abutting surface 111 is located at the front side of the first connecting block 11, and the second abutting surface 211 is located at the rear side of the second connecting block 21. When the second connecting block 21 is connected and fixed to the first connecting block 11 by the fastener 4, the second abutting surface 211 is in contact with the first abutting surface 111, and the abutting boss 212 is in contact with the bottom end surface of the substrate 1, thereby improving the connection stability between the fluid seat 2 and the substrate 1.

[0039] For example, the fluid seat 2 also includes: a mounting portion 22, the mounting portion 22 is fixedly connected to the second connecting block 21, and the nozzle 3 is connected to the mounting portion 22. For example, the second connecting block 21 and the mounting portion 22 are integrally formed. The nozzle 3 is located at the bottom end of the mounting portion 22. Among them, the thickness d of the second connecting block 21 in the x direction is less than the thickness D of the mounting portion 22 in the x direction. The first connecting block 11 and the second connecting block 21 are both located on the right side of the mounting portion 22. The thickness d of the second connecting block 21 is designed to be less than D. On the one hand, it is to make room for the first connecting block 11; when the second connecting block 21 is connected to the first connecting block 11, the total thickness of the two will not exceed the thickness of the base 1, which is conducive to maintaining the overall aesthetics of the piezoelectric injection valve that can be quickly disassembled and assembled; on the other hand, it is conducive to cost saving.

[0040] For example, the fastener 4 can be a structure such as a screw, a pin, or a buckle. When the fastener 4 is a screw or a pin, a first connection hole 112 is provided on the first connection block 11, and a second connection hole 213 is provided on the second connection block 21. The screw or the pin can penetrate the second connection hole 213 and the first connection hole 112 along the x direction. In this way, the second connection block 21 cannot rotate around the axis of the nozzle 3. When the fastener 4 is a pin, the inner diameters of the first connection hole 112 and the second connection hole 213 match the diameter of the pin. When the fastener 4 is a buckle, the buckle clamps the second connection block 21 and the first connection block 11 in the x direction.

[0041] When the fastener 4 is a screw, the inner wall of the first connecting hole 112 is provided with an internal thread (thread b), and the fastener 4 passes through the second connecting hole 213 and is threadedly connected to the first connecting hole 112. Among them, the second connecting hole 213 includes: a first part 2131 and a second part 2132, and the first part 2131 is connected to the second part 2132. The inner wall of the first part 2131 is provided with an internal thread (thread a), and the inner wall of the second part 2132 is not threaded. The screw includes: a limiting portion 41 and a connecting portion 42, the limiting portion 41 is fixedly connected to the connecting portion 42, and the end of the connecting portion 42 away from the limiting portion 41 is provided with an external thread (thread c). In other words, the connecting portion 42 is not all provided with threads, and only a part of the outer wall is provided with external threads (the length of the thread matches the length of the second part 2132). For example, thread a, thread b, and thread c are all M4 threads.

[0042] During assembly, the end of the connection portion 42 with the thread first enters the first portion 2131. When the fastener 4 is rotated, the thread on the connection portion 42 matches with the thread of the first portion 2131, so that the connection portion 42 gradually moves toward the second portion 2132 until all the threads on the connection portion 42 enter the second portion 2132. Then, the fastener 4 is continuously rotated, and the thread on the connection portion 42 matches with the first connection hole 112, so that the connection portion 42 gradually enters the first connection hole 112 until the limiting portion 41 fits with the front end surface of the second connection block 21. During disassembly, the fastener 4 is loosened, so that the connection portion 42 retreats into the second portion 2132 and is separated from the first connection hole 112.

[0043] The utility model divides the second connection hole 213 into two parts and sets a thread in the first part 2131. The purpose is that when disassembling, the fastener 4 is not easy to fall off from the second connection hole 213 due to the existence of the thread in the first part 2131, so as to prevent the screw from falling and being unable to be found during reassembly, thereby affecting the assembly efficiency. In addition, if the screw falls inside the dispensing device, it will also affect the normal operation of the dispensing device.

[0044] For example, a support portion 113 is provided at the bottom end of the first connection block 11, and the support portion 113 extends in a direction close to the second connection block 21. A first plane 214 is provided on one side of the second connection block 21 close to the first connection block 11, and one side of the first plane 214 is connected to the second abutting surface 211. The distance between the first plane 214 and the upper end surface of the abutting boss 212 is h, and the distance between the support portion 113 and the bottom end surface of the base 1 is H, and h<H. When the first connection block 11 and the second connection block 21 are connected, the support portion 113 is located below the first plane 214. During assembly, the fluid seat 5 is placed at the bottom end of the base 1, and the fluid seat 5 is rotated to overlap the first plane 214 of the second connection block 21 on the support portion 113, so that the staff does not need to hold the fluid seat 2 by hand. Then the fastener 4 is screwed into the second connection hole 213 and the first connection hole 112. When the fastener 4 is tightened, the first plane 214 does not contact the support portion 113.

[0045] Taking the fastener 4 as a screw as an example, the disassembly and assembly process is as follows:

[0046] During assembly, place the fluid seat 2 at the bottom end of the base 1, rotate the fluid seat 2 so that the second connecting hole 213 is aligned with the first connecting hole 112, then insert one end of the screw into the second connecting hole 213 and rotate the screw so that the screw moves toward the first connecting hole 112, and finally the external thread of the screw is threadedly connected with the internal thread of the first connecting hole 112 to fix the fluid seat 2 to the base 1.

[0047] During disassembly, the screw is rotated so that the screw moves away from the first connection hole 112, and the external thread of the screw is retracted into the second portion 2132 of the second connection hole 213. At this time, the second connection block 21 can be separated from the first connection block 11. The fluid seat 2 is rotated so that the second connection block 21 is away from the first connection block 11. At this time, the fluid seat 2 can be easily removed.

[0048] In summary, the piezoelectric injection valve that can be quickly disassembled and assembled in the utility model can simplify the disassembly and assembly steps between the fluid seat 2 and the base 1 through structural improvement, which is conducive to improving the disassembly and assembly efficiency. By providing the abutment surface and the abutment boss 212, the installation stability between the base 1 and the fluid seat 2 can be improved. By improving the second connecting hole 213, the fastener 4 is not easy to fall off during disassembly. By providing the support portion 113, the convenience of installation can be further improved.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A piezoelectric injection valve that can be quickly disassembled and assembled, characterized in that: include: A base body (1), wherein a first connecting block (11) is provided at the bottom end of the base body (1); A fluid seat (2), the fluid seat (2) being mounted on the bottom end of the base (1) and provided with a second connection block (21) engaged with the first connection block (11); A fastener (4), the fastener (4) being used to fix the second connecting block (21) on the first connecting block (11); A nozzle (3), wherein the nozzle (3) is mounted on the fluid seat (2) along the z direction; The fluid seat (2) is capable of rotating around the axis of the nozzle (3) in the xy plane, and when the second connecting block (21) is engaged with the first connecting block (11), it is fixed by the fastener (4) to achieve fixation between the fluid seat (2) and the base (1).

2. The piezoelectric injection valve capable of rapid disassembly and assembly according to claim 1, characterized in that: A first abutting surface (111) is provided on a side of the first connecting block (11) close to the second connecting block (21), and a second abutting surface (211) matching with the first abutting surface (111) is provided on a side of the second connecting block (21) close to the first connecting block (11).

3. The piezoelectric injection valve capable of rapid disassembly and assembly according to claim 2, characterized in that: The first abutting surface (111) and the second abutting surface (211) are both inclined surfaces, and the first abutting surface (111) is parallel to the second abutting surface (211).

4. The piezoelectric injection valve capable of rapid disassembly and assembly according to claim 2, characterized in that: A contact boss (212) is provided at the top end of the second connecting block (21).

5. The piezoelectric injection valve capable of rapid disassembly and assembly according to claim 1, characterized in that: The fluid seat (2) further comprises: a mounting portion (22), the mounting portion (22) being fixedly connected to the second connecting block (21), and the nozzle (3) being connected to the mounting portion (22).

6. The piezoelectric injection valve capable of rapid disassembly and assembly according to claim 5, characterized in that: A supporting portion (113) is provided at the bottom end of the first connecting block (11), and the supporting portion (113) extends in a direction approaching the second connecting block (21).

7. The piezoelectric injection valve capable of rapid disassembly and assembly according to claim 6, characterized in that: A first plane (214) is provided on one side of the second connecting block (21) close to the first connecting block (11), and one side of the first plane (214) is connected to the second abutting surface (211); the distance between the first plane (214) and the upper end surface of the abutting boss (212) is h, and the distance between the supporting portion (113) and the bottom end surface of the base (1) is H, where h<H.

8. The piezoelectric injection valve capable of rapid disassembly and assembly according to claim 1, characterized in that: The first connection block (11) is provided with a first connection hole (112), the second connection block (21) is provided with a second connection hole (213), and the fastener (4) is capable of penetrating the second connection hole (213) and the first connection hole (112) along the x direction.

9. The piezoelectric injection valve capable of rapid disassembly and assembly according to claim 8, characterized in that: The fastener (4) is a screw, the inner wall of the first connection hole (112) is provided with an internal thread, and the fastener (4) passes through the second connection hole (213) and is threadedly connected to the first connection hole (112).

10. The piezoelectric injection valve capable of rapid disassembly and assembly according to claim 9, characterized in that: The screw comprises: a limiting portion (41) and a connecting portion (42); the limiting portion (41) is fixedly connected to the connecting portion (42); and an end of the connecting portion (42) away from the limiting portion (41) is provided with an external thread.

11. The piezoelectric injection valve capable of rapid disassembly and assembly according to claim 10, characterized in that: The second connecting hole (213) comprises: a first part (2131) and a second part (2132), the first part (2131) is connected to the second part (2132), the inner wall of the first part (2131) is provided with an internal thread, and the inner wall of the second part (2132) is not threaded; when the connecting part (42) is detached from the first connecting hole (112) and the external thread of the connecting part (42) is located in the second part (2132), the internal thread of the first part (2131) can prevent the screw from falling.

12. The piezoelectric injection valve capable of rapid disassembly and assembly according to claim 1, characterized in that: The fastener (4) is a buckle, and the buckle clamps the second connection block (21) and the first connection block (11) in the x direction.

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