Piezoelectric injection valve

Abstract

The piezoelectric injection valve comprises a valve body, a fluid seat and a clamping piece, the clamping piece is rotatably arranged on the valve body, a clamping groove is formed in the fluid seat, and a clamping part of the clamping piece is suitable for being clamped into the clamping groove so that the valve body and the fluid seat can be fixed. According to the piezoelectric valve, the valve body and the fluid seat are fixed through the clamping piece, so that rapid disassembly and assembly between the valve body and the fluid seat are achieved, meanwhile, in the working process of the piezoelectric valve, the clamping piece can generate a gap after the valve body and the fluid seat are abraded, when the gap exists, the clamping piece can move into the clamping groove in time, and therefore the valve body and the fluid seat can be rapidly disassembled and assembled. And the valve body and the fluid seat are tightly connected all the time until the valve body and the fluid seat are clamped, so that the dispensing stability is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to piezoelectric valve technical field especially relates to a piezoelectric injection valve that can realize quick dismounting. BACKGROUND

[0002] At present, piezoelectric valve is widely used in high-precision, high-quality micro viscous fluid dispensing industry, however, the flow channel in piezoelectric valve needs to dismount the screw fixed with valve body first in the process of dismounting, and the time and cost required are obviously increased due to screw dismounting, therefore, the existing flow channel is difficult to dismount, and the efficiency is low, which seriously affects the work efficiency.

[0003] Therefore, a piezoelectric injection valve needs to be designed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving one of the technical problems in the prior art.

[0005] Therefore, the utility model provides a piezoelectric injection valve, which can realize quick dismounting between valve body and fluid seat.

[0006] According to the piezoelectric injection valve provided by the utility model, the valve body and the fluid seat are fixed through the clamping piece, so that quick dismounting between the valve body and the fluid seat is realized, meanwhile, during the working process of the piezoelectric valve, the clamping piece can move into the clamping groove in time when a gap is generated after the valve body and the fluid seat are abraded, until the valve body and the fluid seat are clamped, so that the connection between the valve body and the fluid seat is kept in a close connection state all the time, and the stability of dispensing is guaranteed.

[0007] The utility model has the advantages that the valve body and the fluid seat are fixed through the clamping piece, so that quick dismounting between the valve body and the fluid seat is realized, meanwhile, during the working process of the piezoelectric valve, the clamping piece can move into the clamping groove in time when a gap is generated after the valve body and the fluid seat are abraded, until the valve body and the fluid seat are clamped, so that the connection between the valve body and the fluid seat is kept in a close connection state all the time, and the stability of dispensing is guaranteed.

[0008] Preferably, the clamping piece extends a clamping part into the clamping groove, the clamping part is provided with a protrusion upward, the protrusion has a clamping surface, and the clamping surface is adapted to contact the abutting surface of the clamping groove.

[0009] Further preferably, the clamping surface is an arc surface, the abutting surface of the clamping groove is a smooth inclined surface inclined toward the lower part of the fluid seat, and the clamping surface is tangent to the abutting surface after contact.

[0010] Preferably, the valve body comprises an adjusting seat, and the clamping piece is hinged to the adjusting seat and can rotate relative to the adjusting seat.

[0011] Further preferably, the clamping member comprises two clamping blocks respectively arranged on two sides of the adjusting seat, the two clamping blocks are symmetrically arranged, the number of the clamping grooves is two, and the two symmetrically arranged clamping blocks are adapted to be clamped into the corresponding clamping grooves.

[0012] Preferably, the two clamping blocks are adapted to work independently, and the protrusions of the two clamping blocks are adapted to push up the fluid seat after the two clamping blocks are clamped into the clamping grooves.

[0013] Further preferably, the adjusting seat is provided with a mounting portion for mounting the clamping blocks, the mounting portion is provided with a through shaft hole, a rotating shaft is mounted in the shaft hole, and the clamping blocks are connected with the adjusting seat through the rotating shaft, so that the clamping blocks rotate relative to the adjusting seat.

[0014] Preferably, the adjusting seat is provided with a containing groove in an upper region of the mounting portion, the containing groove is arranged corresponding to the pressing portion of the clamping block, so that the pressing portion of the clamping block is adapted to be clamped into the containing groove when the pressing portion of the clamping block is pressed.

[0015] Further preferably, a torsional spring is arranged between the clamping member and the adjusting seat, the torsional spring penetrates through the rotating shaft, and the torsional spring acts on the clamping member, so that the clamping member always rotates towards the clamping groove.

[0016] Preferably, when the clamping surface and the abutting surface of the clamping groove are in contact and generate wear, the clamping member rotates towards the clamping groove under the action of the torsional spring, and the clamping surface is tangent to the non-wearing part of the abutting surface.

[0017] Other features and advantages of the present application will be further described in the following specification, and some will become apparent from the specification, or will be understood through practice of the present application. The objects and other advantages of the present application will be realized and achieved by the structure particularly pointed out in the specification, claims and drawings.

[0018] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below in combination with the drawings and embodiments.

[0020] Figure 1 The assembly drawing of the piezoelectric injection valve of the present application;

[0021] Figure 2 The sectional view of the piezoelectric injection valve of the present application;

[0022] Figure 3The assembly view of the fluid seat and the adjusting seat of the utility model;

[0023] Figure 4 The three-dimensional structure view of the fluid seat of the utility model;

[0024] Figure 5 The three-dimensional structure view of the clamping piece of the utility model;

[0025] Figure 6 The structure enlarged view of the clamping block and the clamping groove clamping portion of the utility model.

[0026] Mark explanation:

[0027] 1, valve body;

[0028] 2, fluid seat; 21, clamping groove;

[0029] 3, clamping piece; 31, clamping block; 311, clamping portion; 312, protrusion; 313, connecting portion; 32, adjusting seat; 321, accommodating groove; 322, mounting portion; 323, torsional spring; 324, shaft hole; 325, rotating shaft;

[0030] A, clamping surface; B, abutting surface. Specific implementation

[0031] The utility model will be further explained in detail in combination with the drawings. These drawings are all simplified schematic views, and only the basic structure of the utility model is schematically shown, so they only show the structure related to the utility model. In the description of the utility model, it should be understood that, unless otherwise specified, the meaning of "multiple" is two or more.

[0032] Referring to Figure 1 The utility model discloses a piezoelectric injection valve, including valve body 1, fluid seat 2 and clamping piece 3, clamping piece 3 rotatably arranged on valve body 1, and fluid seat 2 is set up with clamping groove 21, and clamping piece 3 is suitable for clamping into clamping groove 21, to make valve body 1 and fluid seat 2 fixed.

[0033] In addition, during the long-term work of piezoelectric valve, the wear and tear between clamping piece 3 and clamping groove 21 will occur, and after wear and tear, the gap between the two will occur, at this time, clamping piece 3 will move to the direction of clamping groove 21, until the abutting surface B of clamping piece 3 and clamping groove 21 contacts again, at this time, clamping groove 21 can limit the movement of clamping piece 3, and then press valve body 1 upward through clamping piece 3, so that valve body 1 and fluid seat 2 can be in the state of close connection.

[0034] Referring to Figure 6, the clamping piece 3 extends a clamping portion 311 towards the clamping groove 21, and a protrusion 312 is arranged upwards on the clamping portion 311, and the protrusion 312 has a clamping surface A which is adapted to contact with an abutting surface B of the clamping groove 21. The clamping surface A of the protrusion 312 is an arc surface, and the abutting surface B of the clamping groove 21 is a flat inclined surface which is inclined towards the lower part of the fluid seat 2, and the clamping surface A is tangent to the abutting surface B after the two surfaces contact.

[0035] Referring to Figure 3 , the valve body 1 comprises an adjusting seat 32, and the clamping piece 3 is hinged to the adjusting seat 32 and can rotate relative to the adjusting seat 32. In addition, the clamping piece 3 comprises two clamping blocks 31 which are arranged on both sides of the adjusting seat 32, and the two clamping blocks 31 are symmetrically arranged and adapted to be independently clamped into the corresponding clamping groove 21, so that the two clamping blocks 31 can achieve independent clamping between the valve body 1 and the fluid seat 2.

[0036] In addition, when the adjusting seat 32 is connected with the valve body 1, the striker in the valve body 1 is adapted to penetrate through the adjusting seat 32 and can drive the adjusting seat 32 to move synchronously, so that the distance between the striker and the nozzle arranged at the outlet of the fluid seat 2 can be controlled by the position of the adjusting seat 32. The clamping block 31 is rotatably arranged on the adjusting seat 32, and the clamping block 31 and the adjusting seat 32 are detachably connected. Therefore, after the clamping block 31 is clamped into the clamping groove 21, the clamping block 31 and the clamping groove 21 are usually in hard contact, so that wear is inevitably generated during the continuous contact between the two. If the clamping block 31 is worn to a certain extent, the clamping block 31 and the adjusting seat 32 are detachably connected, so that the clamping block 31 can be replaced more conveniently, and only the clamping block 31 needs to be replaced during replacement, while other structures can continue to be used normally, thereby effectively reducing the cost required for replacement.

[0037] Referring to Figure 4 , the adjusting seat 32 is provided with a mounting portion 322 for mounting the clamping block 31, the clamping block 31 extends a connecting portion 313 towards the adjusting seat 32, and an axial hole 324 is arranged in the connecting portion 313 and the mounting portion 322, a rotating shaft 325 is arranged in the axial hole 324, and the connecting portion 313 of the clamping block 31 and the mounting portion 322 are penetrated by the rotating shaft 325, so that the clamping block 31 can rotate around the rotating shaft 325.

[0038] Referring to Figure 5, the torsion spring 323 is arranged on the rotating shaft 325, one end of the torsion spring 323 acts on the adjusting seat 32, and the other end acts on the clamping block 31, and because the clamping block 31 can rotate under the action of the rotating shaft 325, and the adjusting seat 32 does not move relative to the clamping block 31, therefore, under the action of the torsion spring 323, the clamping block 31 can rotate relative to the adjusting seat 32, and the torsion spring 323 continuously applies force to the clamping block 31, so that the clamping block 31 always rotates towards the direction of the clamping groove 21.

[0039] Referring to Figure 2 Because the clamping blocks 31 are symmetrically arranged on both sides of the adjusting seat 32, and the two symmetrically arranged clamping blocks 31 are connected with the adjusting seat 32 through two rotating shafts 325, respectively, so that the clamping block 31 can rotate around the corresponding rotating shaft 325. And the two clamping blocks 31 do not interfere with each other, and both of them can work independently. Therefore, during operation, the operator can first press one of the clamping blocks 31 to open (press the upper part of the clamping block 31) and hold it, then press the other clamping block 31 to open, then align the fluid seat 2 with the valve body 1, and then release the two clamping blocks 31, so that both of them can be clamped into the clamping groove 21 on the fluid seat 2, thereby completing the fixation between the fluid seat 2 and the valve body 1.

[0040] Referring to Figure 4 , and the accommodating groove 321 is arranged on the upper region of the mounting portion 322 of the adjusting seat 32, which corresponds to the pressing portion of the clamping block 31, so that when the pressing portion of the clamping block 31 is pressed, the clamping block 31 can be clamped into the accommodating groove 321, at this time, the clamping portion 311 of the clamping block 31 does not contact the clamping groove 21, so that the clamping block 31 is in the open state. When the pressing portion of the clamping block 31 is no longer subjected to the action force, at this time, the clamping block 31 and the clamping portion 311 thereof are continuously clamped into the clamping groove 21 under the action of the torsion spring 323, the clamping portion 311 of the clamped clamping block 31 acts on the abutting surface B of the clamping groove 21 to continuously lift the fluid seat 2 upward, and drives the fluid seat 2 to be fixed with the valve body 1.

[0041] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description 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.

[0042] The above-mentioned ideal embodiments of the present application are for inspiration, and through the above-mentioned description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined by the scope of the claims.

Claims

1. A piezoelectric jet valve, characterized by, The utility model provides a valve body (1), fluid seat (2) and clamp piece (3) including, the clamp piece (3) rotatably arranged on the valve body (1), the fluid seat (2) is set up with the clamping groove (21) on, the clamp part of clamp piece (3) is suitable for clamping into the clamping groove (21) to make the valve body (1) with the fluid seat (2) fixed.

2. The piezoelectric jet valve according to claim 1, characterized in that The clamp piece (3) extends the clamping part (311) to the clamping groove (21) direction, the clamping part (311) is equipped with the protrusion (312) upwards, the protrusion (312) has the holding surface (A), the holding surface (A) is suitable for the contact with the abutting surface (B) of the clamping groove (21).

3. The piezoelectric jet valve according to claim 2, characterized in that The holding surface (A) is arc surface, the abutting surface (B) of the clamping groove (21) is the smooth inclined plane inclined to the lower part of the fluid seat (2), the holding surface (A) is tangent after the contact with the abutting surface (B).

4. The piezoelectric jet valve according to claim 1, characterized by The valve body (1) includes the adjusting seat (32), and the clamp piece (3) is hinged to the adjusting seat (32) and can rotate relative to the adjusting seat (32).

5. The piezoelectric jet valve according to claim 4, characterized in that The clamp piece (3) includes two clamping blocks (31) arranged on both sides of the adjusting seat (32) respectively, the two clamping blocks (31) are symmetrically arranged, the number of the clamping groove (21) is two, and the two symmetrically arranged clamping blocks (31) are suitable for clamping into the corresponding clamping groove (21).

6. The piezoelectric jet valve according to claim 5, characterized in that The two clamping blocks (31) are suitable for independent operation, and the protrusions (312) of the two clamping blocks (31) are suitable for lifting the fluid seat (2) upwards after the two clamping blocks (31) are clamped into the clamping groove (21).

7. The piezoelectric jet valve according to claim 5, characterized in that The adjusting seat (32) is provided with a mounting portion (322) for mounting the clamping block (31), the mounting portion (322) is provided with a through shaft hole (324), the shaft hole (324) is provided with a rotating shaft (325), the clamping block (31) is connected to the adjusting seat (32) through the rotating shaft (325), so that the clamping block (31) rotates relative to the adjusting seat (32).

8. The piezoelectric jet valve according to claim 7, characterized in that The adjusting seat (32) is provided with a containing groove (321) in the upper region of the mounting portion (322), and the containing groove (321) is arranged corresponding to the pressing portion of the clamping block (31), so that the pressing portion of the clamping block (31) is clamped into the containing groove (321) when the pressing portion of the clamping block (31) is pressed.

9. The piezoelectric jet valve according to claim 3, characterized in that, A torsional spring (323) is further arranged between the clamp piece (3) and the adjusting seat (32), the torsional spring (323) penetrates through the rotating shaft (325), and the torsional spring (323) acts on the clamp piece (3), so that the clamp piece (3) always rotates towards the clamping groove (21).

10. The piezoelectric jet valve according to claim 9, characterized in that When the holding surface (A) and the abutting surface (B) of the clamping groove (21) are in contact and worn, the clamp piece (3) rotates towards the clamping groove (21) under the action of the torsional spring (323), and the holding surface (A) is tangent to the unworn part of the abutting surface (B).

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