Piezoelectric valve nozzle convenient to disassemble and assemble

Abstract

The piezoelectric valve nozzle convenient to disassemble and assemble comprises a nozzle body and a fixed seat connected with the nozzle body in a matched mode, an inward stretching rod is fixed to the upper end face of the nozzle body, a first clamping groove is formed in the inward stretching rod, a movable groove is formed in the fixed seat, and an opening of the movable groove is located in the lower end face of the fixed seat. The inner extending rod is inserted into the movable groove in a matched mode, an extending groove, a containing groove and a backflow hole are further formed in the movable groove, a first spring and a rebounding block connected with the first spring are arranged in the extending groove, a positioning rod is connected to the rebounding block, and the positioning rod penetrates through the fixing base in a sliding mode and is connected with a clamping block; a second spring and a sliding block connected with the second spring are further arranged in the inward stretching rod. According to the piezoelectric valve nozzle convenient to disassemble and assemble, the nozzle body is separated from the fixing base on the premise that no external tool is used or thread fit is not needed, use of the external tool is avoided, and convenient disassembly and assembly are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a piezoelectric valve nozzle, in particular to a piezoelectric valve nozzle convenient to dismount. BACKGROUND

[0002] The piezoelectric valve nozzle is a device for controlling fluid flow by piezoelectric effect, has the advantages of fast response, accurate control and low power consumption, and is widely used in microfluid control, precise liquid dispensing and other fields. The piezoelectric valve nozzle realizes non-contact dispensing by piezoelectric ceramic technology, has the characteristics of high precision, high consistency and high efficiency, and is suitable for precise control of various high-viscosity liquids.

[0003] The piezoelectric valve nozzle is usually installed with its fixing seat through threaded cooperation or fixed connection, but the threaded cooperation mode determines that the threaded position is easy to wear during subsequent dismounting, resulting in a decrease in precision, so it cannot be dismounted frequently, and the fixed connection mode requires the use of external tools for dismounting, so it is inconvenient to dismount. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a piezoelectric valve nozzle convenient to dismount, which separates the nozzle main body from the fixing seat without using external tools or relying on threaded cooperation, avoids the use of external tools, simplifies the dismounting process, avoids wear caused by threaded cooperation, and realizes convenient dismounting of the piezoelectric valve nozzle.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a piezoelectric valve nozzle convenient to dismount, which comprises a nozzle main body and a fixing seat connected with the nozzle main body, an inner extension rod is fixed to the upper end face of the nozzle main body, a first clamping groove is arranged on the inner extension rod, a movable groove is arranged in the fixing seat, the opening of the movable groove is located on the lower end face of the fixing seat, the inner extension rod is inserted into the movable groove in a kiss, and an extension groove, a storage groove and a backflow hole are further arranged in the movable groove; a first spring and a rebound block connected with the first spring are arranged in the extension groove; a positioning rod is connected to the rebound block, wherein the positioning rod slides through the fixing seat and is connected with a clamping block; a second spring and a sliding block connected with the second spring are further arranged in the inner extension rod; a second clamping groove is arranged on the sliding block; one end of the clamping block is located in the storage groove and abuts against the inner wall of the storage groove; the other end of the clamping block is inserted into the second clamping groove; an air bag and a push block connected with the air bag are arranged in the backflow hole; the air bag separates the space on both sides of the backflow hole; the push block is inserted into the first clamping groove, so that the push block can limit the inner extension rod, preventing the inner extension rod and the nozzle main body from falling off the fixing seat, and ensuring the stability of the nozzle main body after being connected with the fixing seat.

[0006] Preferably, the rebound block is attached to the inner wall of the extension groove, and the end face of the rebound block close to the inner extension rod is a bevel; so that the inner extension rod can pass the rebound block better by the bevel of the inner extension rod, and the second spring is separated from the rebound block, and the clamping block is separated from the sliding block, and the sliding block can move up under the action of the second spring, so that the balance of the air pressure in the extension groove is met, the nozzle body can be separated from the fixed seat smoothly, the nozzle body is separated from the fixed seat without the help of external tools or threaded cooperation, the use of external tools is avoided, the disassembly and assembly process is simplified, and wear caused by threaded cooperation is avoided, so that the piezoelectric valve nozzle is conveniently disassembled and assembled. Figure Four The state shown in the middle.

[0007] Preferably, the end of the first spring away from the rebound block is connected with the inner wall of the extension groove; so that the structure of the first spring remains stable.

[0008] Preferably, the positioning rod passes through the inside of the first spring and does not contact the first spring; so that the extension of the positioning rod does not affect the first spring.

[0009] Preferably, the inner attachment plate is connected to the end of the second spring away from the sliding block, and the inner attachment plate is fixed in the inner extension rod; so that the inner attachment plate can support the sliding block and the second spring.

[0010] Preferably, a plurality of air holes are arranged on the inner attachment plate; the existence of the plurality of air holes enables the airflow to pass through smoothly.

[0011] Preferably, the sliding block is attached to the inner wall of the inner extension rod; so that the sliding block can only slide in the vertical direction in the inner extension rod and cannot shake.

[0012] Preferably, the air bag is a hollow cavity structure, and a standard atmospheric pressure environment is arranged in the air bag.

[0013] Compared with the prior art, the piezoelectric valve nozzle of the utility model has the beneficial effects that: by using a larger force to separate the nozzle body from the fixed seat, the inner extension rod overcomes the air pressure in the extension groove, the inner extension rod is separated from the rebound block, the clamping block is separated from the sliding block, the sliding block can move up under the action of the second spring, the balance of the air pressure in the extension groove is met, the nozzle body can be separated from the fixed seat smoothly, the nozzle body is separated from the fixed seat without the help of external tools or threaded cooperation, the use of external tools is avoided, the disassembly and assembly process is simplified, and wear caused by threaded cooperation is avoided, so that the piezoelectric valve nozzle is conveniently disassembled and assembled. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of one of the embodiments of the utility model;

[0015] Figure 2 It is a schematic view of two of the embodiments of the utility model;

[0016] Figure 3 It is a schematic view of the Figure 1 Cross-sectional view of the utility model along the direction A-A in the middle;

[0017] Figure 4 It is a schematic view of the Figure 3An enlarged view of the structure at B;

[0018] Figure 5 The utility model discloses a Figure 3 An enlarged view of the structure at C;

[0019] Figure 6 The utility model discloses a Figure 3 An enlarged view of the structure at D.

[0020] The reference signs and names in the drawings are as follows: 1, nozzle main body; 2, fixed seat; 3, inner extension rod; 301, first clamping groove; 4, movable slot; 5, extension slot; 6, first spring; 7, rebound block; 8, positioning rod; 9, clamping block; 10, storage slot; 11, sliding block; 1101, second clamping groove; 12, inner pasting plate; 1201, air hole; 13, second spring; 14, backflow hole; 15, air bag; 16, push block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] In the description of the embodiments of the utility model, it is understood that the directions or position relations indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are the directions or position relations shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0023] In the embodiments of the utility model, unless there is definite stipulation and limitation, the terms "mount", "connect", "fix", and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, it can be internal communication of two elements or interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to specific circumstances.

[0024] Please refer to Figures 1-2 The utility model provides an embodiment: a piezoelectric valve nozzle convenient to dismount, including nozzle main body 1 and with the cooperation and connection of nozzle main body 1 fixed seat 2,

[0025] Please refer to Figures 3-4 The inner extension rod 3 is fixed on the upper end surface of the nozzle main body 1, the movable slot 4 is arranged in the fixed seat 2, the opening of the movable slot 4 is located at the lower end surface of the fixed seat 2, the inner extension rod 3 is inserted into the movable slot 4, the extension slot 5 is further arranged in the movable slot 4, the first spring 6 and the rebound block 7 connected with the first spring 6 are arranged in the extension slot 5, one end of the first spring 6 away from the rebound block 7 is connected with the inner wall of the extension slot 5, so that the structure of the first spring 6 remains stable, the rebound block 7 is attached to the inner wall of the extension slot 5, and one end surface of the rebound block 7 close to the inner extension rod 3 is inclined, so that the inner extension rod 3 can better pass the rebound block 7 by the inclined surface of the inner extension rod 3, and the positioning rod 8 is connected on the rebound block 7;

[0026] Please refer to Figure 5 The receiving slot 10 is further arranged in the movable slot 4, wherein the positioning rod 8 slides through the fixed seat 2 and is connected with the clamping block 9, the positioning rod 8 passes through the inside of the first spring 6 and does not contact the first spring 6, so that the extension of the positioning rod 8 does not affect the first spring 6, the second spring 13 and the sliding block 11 connected with the second spring 13 are further arranged in the inner extension rod 3, the inner pasting plate 12 is connected at one end of the second spring 13 away from the sliding block 11, the inner pasting plate 12 is fixed in the inner extension rod 3, so that the inner pasting plate 12 can support the sliding block 11 and the second spring 13, a plurality of air holes 1201 are arranged on the inner pasting plate 12, the existence of the plurality of air holes 1201 enables the airflow to pass smoothly, the second clamping groove 1101 is arranged on the sliding block 11, the sliding block 11 is attached to the inner wall of the inner extension rod 3, so that the sliding block 11 can only slide in the vertical direction in the inner extension rod 3 and will not shake, one end of the clamping block 9 is located in the receiving slot 10 and is attached to the inner wall of the receiving slot 10, and the other end of the clamping block 9 is inserted into the second clamping groove 1101;

[0027] Please refer to Figure 6A first clamping groove 301 is arranged on the inner extension rod 3, a backflow hole 14 is further arranged in the movable slot 4, an air bag 15 and a push block 16 connected with the air bag 15 are arranged in the backflow hole 14, the air bag 15 separates the space on both sides of the backflow hole 14, the air bag 15 is a hollow cavity structure, a standard atmospheric pressure environment is arranged in the air bag 15, the push block 16 is inserted into the first clamping groove 301, so that the push block 16 can limit the inner extension rod 3, avoid the inner extension rod 3 and the nozzle body 1 from falling off the fixing seat 2, and ensure the stability of the nozzle body 1 after being combined with the fixing seat 2.

[0028] In the working process of the utility model, when the nozzle body 1 is installed, the inner extension rod 3 on the nozzle body 1 is inserted into the movable slot 4, so that the inner extension rod 3 extrudes the rebound block 7 and extrudes the rebound block 7 into the extension groove 5 (the state shown in the figure) Figure 4 The upper movement of the inner extension rod 3 and the influence of the air pressure in the movable slot 4 make the second spring 13 push the sliding block 11 to sink, so that the second clamping groove 1101 is just opposite to the storage slot 10, and therefore the clamping block 9 can enter the second clamping groove 1101 and limit the sliding block 11, avoiding the sliding block 11 returning to the original position; meanwhile, the sinking of the sliding block 11 influences the air bag 15 in the backflow hole 14, so that the air bag 15 drives the push block 16 to enter the first clamping groove 301, thereby limiting the inner extension rod 3, so that the inner extension rod 3 cannot be separated from the movable slot 4 (unless a force that can overcome the air pressure in the movable slot 4 is used), thereby ensuring the stability of the nozzle body 1 after being combined with the fixing seat 2, and meanwhile, no external tool is needed when the nozzle body 1 is disassembled subsequently, and because there is no thread design, the wear during thread cooperation is reduced (in actual design, the number of the inner extension rod 3, the movable slot 4 and all the structures in the movable slot 4 is at least two, so that multiple inner extension rods 3 and multiple movable slots 4 are combined, so that the joint between the nozzle body 1 and the fixing seat 2 is more stable).

[0029] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A piezoelectric valve nozzle convenient to disassemble, comprising a nozzle body (1) and a fixing base (2) connected with the nozzle body (1), characterized in that: The upper end face of the nozzle body (1) is fixed with an inner extension rod (3), the inner extension rod (3) is provided with a first clamping groove (301), the fixed seat (2) is provided with a movable slot (4), the inner extension rod (3) is inserted into the movable slot (4), the opening of the movable slot (4) is located at the lower end face of the fixed seat (2), and the movable slot (4) is provided with an extension slot (5), a storage slot (10) and a backflow hole (14), the movable slot (4) is further provided with a second spring (13) and a sliding block (11) connected with the second spring (13), the extension slot (5) is provided with a first spring (6) and a rebound block (7) connected with the first spring (6), the rebound block (7) is connected with a positioning rod (8), the positioning rod (8) slides through the fixed seat (2) and is connected with a clamping block (9), the sliding block (11) is provided with a second clamping groove (1101), one end of the clamping block (9) is located in the storage slot (10) and abuts against the inner wall of the storage slot (10), and the other end of the clamping block (9) is inserted into the second clamping groove (1101), the backflow hole (14) is provided with an air bag (15) and a push block (16) connected with the air bag (15), the air bag (15) divides the space on both sides of the backflow hole (14), and the push block (16) is inserted into the first clamping groove (301).

2. A piezoelectric valve nozzle according to claim 1, characterized in that: The rebound block (7) abuts against the inner wall of the extension slot (5), and the end face of the rebound block (7) close to the inner extension rod (3) is inclined.

3. A piezoelectric valve nozzle for easy assembly and disassembly according to claim 1, characterized in that: The end of the first spring (6) away from the rebound block (7) is connected with the inner wall of the extension slot (5).

4. A piezoelectric valve nozzle for easy assembly and disassembly according to claim 1, characterized in that: The positioning rod (8) passes through the inside of the first spring (6) and does not contact the first spring (6).

5. A piezoelectric valve nozzle for easy assembly and disassembly according to claim 1, characterized in that: The end of the second spring (13) away from the sliding block (11) is connected with an inner sticking plate (12), and the inner sticking plate (12) is fixed in the inner extension rod (3).

6. A piezoelectric valve nozzle for easy assembly and disassembly according to claim 5, characterized in that: The inner sticking plate (12) is provided with a plurality of air holes (1201).

7. A piezoelectric valve nozzle for easy assembly and disassembly according to claim 1, characterized in that: The sliding block (11) abuts against the inner wall of the inner extension rod (3).

8. A piezoelectric valve nozzle for easy assembly and disassembly according to claim 1, characterized in that: The air bag (15) is a hollow cavity structure, and the air bag (15) is provided with an environment of one standard atmospheric pressure.

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