Miniature piezoelectric pump

Abstract

The utility model relates to the technical field of piezoelectric pumps, in particular to a miniature piezoelectric pump which comprises a pump body and piezoelectric ceramic pieces, the piezoelectric ceramic pieces are fixed to the inner walls of the two ends of the pump body, a vertical sliding groove is formed in the inner side wall of the pump body, a lifting adjusting assembly is installed in the vertical sliding groove, and a fixed collision piece is installed on the lifting adjusting assembly. The fixed collision piece vertically corresponds to an elastic collision piece fixedly installed on the piezoelectric ceramic piece, a liquid inlet hollow block and a liquid outlet hollow block are installed at the top of the pump body, and the liquid inlet hollow block and the liquid outlet hollow block are both fixedly connected with the pump body through limiting locking assemblies. The liquid inlet hollow block and the liquid outlet hollow block are respectively communicated with the pump body through an inverted umbrella-shaped valve and a positive umbrella-shaped valve; according to the utility model, the piezoelectric ceramic piece can be cleaned, meanwhile, the liquid inlet hollow block and the liquid outlet hollow block can be detached from the pump body, so that the inverted umbrella-shaped valve and the positive umbrella-shaped valve can be replaced or cleaned conveniently, the use is more flexible, and the convenience of overall cleaning is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of piezoelectric pumps, in particular to a micro piezoelectric pump. Background Art

[0002] The piezoelectric pump is a new type of fluid driver that does not require an additional drive motor. Instead, it uses the inverse piezoelectric effect of piezoelectric ceramics to deform the piezoelectric vibrator, and then the deformation produces a volume change in the pump chamber to achieve fluid output or use the piezoelectric vibrator to generate fluctuations to transmit liquid. After long-term use, the existing piezoelectric pumps are inconvenient to clean the piezoelectric vibrator in the pump body and the umbrella-shaped valves at the inlet and outlet of the liquid. The piezoelectric vibrator and the umbrella-shaped valves at the inlet and outlet of the liquid are easily affected by impurities and dust, which has a certain impact on the liquid flow through the piezoelectric pump, and there are certain disadvantages in the use process.

[0003] In view of this, the present utility model is proposed. Summary of the invention

[0004] The purpose of the utility model is to provide a miniature piezoelectric pump in order to solve the above-mentioned problem. It has the advantage of cleaning the piezoelectric ceramic sheet. At the same time, the liquid inlet hollow block and the liquid outlet hollow block can be disassembled from the pump body through the limit locking assembly, so as to facilitate the replacement or cleaning of the inverted umbrella valve and the upright umbrella valve. It is more flexible to use and effectively improves the convenience of overall cleaning.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a micro piezoelectric pump, comprising a pump body and a piezoelectric ceramic sheet, the piezoelectric ceramic sheet is fixed on the inner walls at both ends of the pump body, a vertical slide groove is opened on the inner wall of the pump body, the lifting and lowering adjustment component is installed in the vertical slide groove, the fixed collision piece is installed on the lifting and lowering adjustment component, the fixed collision piece is vertically corresponding to the elastic collision piece fixedly installed on the piezoelectric ceramic sheet, the liquid inlet hollow block and the liquid outlet hollow block are installed on the top of the pump body, the liquid inlet hollow block and the liquid outlet hollow block are fixedly connected to the pump body through the limit locking assembly, and the liquid inlet hollow block and the liquid outlet hollow block are respectively connected to the pump body through an inverted umbrella valve and a positive umbrella valve.

[0006] Furthermore, in order to drive the vertical screw to rotate in the vertical slide groove by controlling the adjusting head, the lifting and adjusting assembly consists of a vertical screw and an adjusting head, one end of the vertical screw is rotatably mounted on the inner wall of the bottom end of the vertical slide groove, and the adjusting head is fixed to the other end of the vertical screw.

[0007] Furthermore, in order to enable the threaded slider to move up and down in the vertical limit groove when the vertical screw rotates, thereby adjusting the height of the fixed collision plate, the threaded slider is installed on the vertical screw, the threaded slider is slidably engaged in the vertical limit groove, and the fixed collision plate is fixed on the threaded slider.

[0008] Furthermore, in order to drive the bidirectional reverse threaded screw to rotate in the square mounting frame by controlling the driving knob, the limit locking assembly includes a square mounting frame and a square connecting frame, the square mounting frame is fixed on the top of the pump body, the square connecting frame is fixedly sleeved on the liquid inlet hollow block and the liquid outlet hollow block, the bidirectional reverse threaded screw is rotatably mounted on the inner wall of one end of the square mounting frame, and the driving knob is fixedly mounted on one end of the bidirectional reverse threaded screw.

[0009] Furthermore, in order to adjust the distance between the two adjustment sliders when the bidirectional reverse thread screw rotates, two adjustment sliders are threadedly installed on the bidirectional reverse thread screw, and the two adjustment sliders are respectively located at the reverse thread ends of the bidirectional reverse thread screw.

[0010] Furthermore, in order to fix the square connecting frame by inserting the L-shaped locking pin rod into the locking pin hole, the first L-shaped connecting rod and the second L-shaped connecting rod are respectively fixedly installed on the two adjusting sliders, and the L-shaped locking pin rod is fixedly installed on the first L-shaped connecting rod and the second L-shaped connecting rod, and one end of the L-shaped locking pin rod is inserted into the locking pin hole opened on the square connecting frame.

[0011] Furthermore, in order to avoid leakage in the connection between the pump body and the liquid inlet hollow block and the liquid outlet hollow block through the sealing gasket block, the sealing gasket blocks are fixedly installed on the liquid inlet hollow block and the liquid outlet hollow block, and the sealing gasket blocks are used to seal the connection positions between the liquid inlet hollow block and the liquid outlet hollow block and the pump body.

[0012] Furthermore, in order to conveniently pump and discharge the liquid into the pump body through the liquid inlet joint and the liquid outlet joint, the liquid inlet joint is fixedly installed on the top of the liquid inlet hollow block, and the liquid outlet joint is fixedly installed on the top of the liquid outlet hollow block.

[0013] The technical effects and advantages of the utility model are as follows: by controlling the lifting and adjusting component to adjust the height of the fixed collision plate, the elastic collision plate can move up and down with the piezoelectric ceramic plate and collide with the fixed collision plate, so that the dust and impurities on the piezoelectric ceramic plate escape into the pump body and are discharged, thereby realizing the cleaning of the piezoelectric ceramic plate; at the same time, the liquid inlet hollow block and the liquid outlet hollow block can be disassembled from the pump body through the limit locking component, so as to facilitate the replacement or cleaning of the inverted umbrella valve and the positive umbrella valve; it is more flexible to use, effectively improves the convenience of overall cleaning, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the pump body of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the limit locking assembly of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the lifting and adjusting component of the utility model.

[0018] In the figure: 1. Pump body; 2. Piezoelectric ceramic sheet; 3. Lifting and adjusting assembly; 301. Vertical screw; 302. Adjusting head; 303. Threaded slider; 4. Fixed collision plate; 5. Elastic collision plate; 6. Liquid inlet hollow block; 7. Liquid outlet hollow block; 8. Limit locking assembly; 801. Square mounting frame; 802. Square connecting frame; 803. Bidirectional reverse threaded screw; 804. Driving knob; 805. Adjusting slider; 806. First L-shaped connecting rod; 807. Second L-shaped connecting rod; 808. L-shaped locking pin; 9. Sealing pad; 10. Liquid inlet joint; 11. Liquid outlet joint. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4As shown, a micro piezoelectric pump comprises a pump body 1 and a piezoelectric ceramic sheet 2. The piezoelectric ceramic sheet 2 is fixed on the inner walls at both ends of the pump body 1. A vertical slide groove is provided on the inner wall of the pump body 1. A lifting and adjusting component 3 is installed in the vertical slide groove. A fixed collision piece 4 is installed on the lifting and adjusting component 3. The fixed collision piece 4 vertically corresponds to an elastic collision piece 5 fixedly installed on the piezoelectric ceramic sheet 2. The lifting and adjusting component 3 is controlled to adjust the height of the fixed collision piece 4, so that when the elastic collision piece 5 moves up and down with the piezoelectric ceramic sheet 2, it can collide with the fixed collision piece 4, so that the dust and impurities attached to the piezoelectric ceramic sheet 2 are vibrated and dissipated. The liquid is discharged into the liquid of the pump body 1 to achieve the cleaning of the piezoelectric ceramic sheet 2. A liquid inlet hollow block 6 and a liquid outlet hollow block 7 are installed on the top of the pump body 1. The liquid inlet hollow block 6 and the liquid outlet hollow block 7 are fixedly connected to the pump body 1 through a limit locking assembly 8, and the liquid inlet hollow block 6 and the liquid outlet hollow block 7 are connected to the pump body 1 through an inverted umbrella valve and a positive umbrella valve respectively. When in use, under the action of the limit locking assembly 8, the liquid inlet hollow block 6 and the liquid outlet hollow block 7 can be removed from the pump body 1, which is convenient for replacing or cleaning the inverted umbrella valve and the positive umbrella valve, and avoiding the inverted umbrella valve and the positive umbrella valve from being contaminated with dust and impurities affecting the overall use effect.

[0021] The lifting and lowering adjustment component 3 consists of a vertical screw 301 and an adjusting head 302. One end of the vertical screw 301 is rotatably mounted on the inner wall of the bottom end of the vertical slide groove, and the adjusting head 302 is fixed to the other end of the vertical screw 301. A threaded slider 303 is installed on the vertical screw 301. The threaded slider 303 is slidably engaged in the vertical limit groove, and the fixed collision plate 4 is fixed on the threaded slider 303. The adjusting head 302 is controlled to rotate, so that the vertical screw 301 rotates in the vertical slide groove, and the threaded slider 303 drives the fixed collision plate 4 to move up and down, so as to adjust the height of the fixed collision plate 4.

[0022] The limit locking assembly 8 includes a square mounting frame 801 and a square connecting frame 802. The square mounting frame 801 is fixed on the top of the pump body 1. The square connecting frame 802 is fixedly sleeved on the liquid inlet hollow block 6 and the liquid outlet hollow block 7. A two-way reverse thread screw 803 is rotatably mounted on the inner wall of one end of the square mounting frame 801. A driving knob 804 is fixedly mounted on one end of the two-way reverse thread screw 803. Two adjusting sliders 805 are threadedly mounted on the two-way reverse thread screw 803. The two adjusting sliders 805 are respectively located at the reverse thread ends of the two-way reverse thread screw 803. A first L-shaped connecting rod 806 and a second L-shaped connecting rod 806 are respectively fixedly mounted on the two adjusting sliders 805. 807, the first L-shaped connecting rod 806 and the second L-shaped connecting rod 807 are fixedly installed with an L-shaped locking pin 808, one end of the L-shaped locking pin 808 is inserted into the locking pin hole opened on the square connecting frame 802. When in use, the control driving knob 804 makes the two-way reverse threaded screw 803 rotate in the square mounting frame 801, so that the two adjusting sliders 805 drive the first L-shaped connecting rod 806 and the second L-shaped connecting rod 807 to move closer or farther, so that the L-shaped locking pin 808 can be inserted into the locking pin hole, so that the square connecting frame 802 can fix the liquid inlet hollow block 6 and the liquid outlet hollow block 7 on the pump body 1.

[0023] Sealing gaskets 9 are fixedly mounted on the liquid inlet hollow block 6 and the liquid outlet hollow block 7. The sealing gaskets 9 are used to seal the connection positions between the liquid inlet hollow block 6 and the liquid outlet hollow block 7 and the pump body 1 to prevent leakage of the pump body 1. A liquid inlet joint 10 is fixedly mounted on the top of the liquid inlet hollow block 6, and a liquid outlet joint 11 is fixedly mounted on the top of the liquid outlet hollow block 7, so that the pump body 1 can pump and discharge liquid through the liquid inlet joint 10 and the liquid outlet joint 11.

[0024] When the utility model is in use, a liquid inlet pipe and a liquid discharge pipe are respectively connected to the liquid inlet joint 10 and the liquid outlet joint 11, and the piezoelectric ceramic piece 2 is controlled to change the space in the inner cavity of the pump body 1 to realize the suction of the liquid. After long-term use, the lifting and lowering adjustment component 3 is controlled to adjust the height of the fixed collision piece 4, so that the elastic collision piece 5 can collide with the fixed collision piece 4 when moving up and down with the piezoelectric ceramic piece 2, so that the dust and impurities attached to the piezoelectric ceramic piece 2 are vibrated and dispersed, and the flow of liquid in the pump body 1 discharges the impurities, so as to realize the cleaning of the piezoelectric ceramic piece 2. At the same time, through the limit locking component 8, the liquid inlet hollow block 6 and the liquid outlet hollow block 7 are conveniently disassembled from the pump body 1, so as to facilitate the cleaning or replacement of the inverted umbrella valve and the positive umbrella valve in the liquid inlet hollow block 6 and the liquid outlet hollow block 7.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A micro piezoelectric pump, comprising a pump body (1) and a piezoelectric ceramic sheet (2), wherein the piezoelectric ceramic sheet (2) is fixed to the inner walls at both ends of the pump body (1), characterized in that: A vertical slide groove is provided on the inner wall of the pump body (1), a lifting and adjusting component (3) is installed in the vertical slide groove, a fixed collision plate (4) is installed on the lifting and adjusting component (3), and the fixed collision plate (4) vertically corresponds to the elastic collision plate (5) fixedly installed on the piezoelectric ceramic plate (2). A liquid inlet hollow block (6) and a liquid outlet hollow block (7) are installed on the top of the pump body (1), the liquid inlet hollow block (6) and the liquid outlet hollow block (7) are fixedly connected to the pump body (1) through a limit locking component (8), and the liquid inlet hollow block (6) and the liquid outlet hollow block (7) are connected to the pump body (1) through an inverted umbrella valve and a positive umbrella valve respectively.

2. The micro piezoelectric pump according to claim 1, characterized in that: The lifting and adjusting assembly (3) is composed of a vertical screw rod (301) and an adjusting head (302); one end of the vertical screw rod (301) is rotatably mounted on the inner wall of the bottom end of the vertical slide groove, and the adjusting head (302) is fixed to the other end of the vertical screw rod (301).

3. The micro piezoelectric pump according to claim 2, characterized in that: A threaded slider (303) is mounted on the vertical screw rod (301), the threaded slider (303) is slidably engaged in the vertical slide groove, and the fixed collision plate (4) is fixed on the threaded slider (303).

4. The micro piezoelectric pump according to claim 1, characterized in that: The limit locking assembly (8) comprises a square mounting frame (801) and a square connecting frame (802); the square mounting frame (801) is fixed to the top of the pump body (1); the square connecting frame (802) is fixedly sleeved on the liquid inlet hollow block (6) and the liquid outlet hollow block (7); a bidirectional reverse threaded screw (803) is rotatably mounted on the inner wall of one end of the square mounting frame (801); and a driving knob (804) is fixedly mounted on one end of the bidirectional reverse threaded screw (803).

5. The micro piezoelectric pump according to claim 4, characterized in that: Two adjusting sliders (805) are threadedly mounted on the bidirectional reverse thread screw (803), and the two adjusting sliders (805) are respectively located at the reverse thread ends of the bidirectional reverse thread screw (803).

6. The micro piezoelectric pump according to claim 5, characterized in that: A first L-shaped connecting rod (806) and a second L-shaped connecting rod (807) are fixedly mounted on the two adjusting sliders (805), respectively; an L-shaped locking pin rod (808) is fixedly mounted on the first L-shaped connecting rod (806) and the second L-shaped connecting rod (807); one end of the L-shaped locking pin rod (808) is inserted into a locking pin hole provided on the square connecting frame (802).

7. The micro piezoelectric pump according to claim 1, characterized in that: A sealing gasket (9) is fixedly mounted on both the liquid inlet hollow block (6) and the liquid outlet hollow block (7), and the sealing gasket (9) is used to seal the connection position between the liquid inlet hollow block (6) and the liquid outlet hollow block (7) and the pump body (1).

8. The micro piezoelectric pump according to claim 1, characterized in that: A liquid inlet joint (10) is fixedly mounted on the top of the liquid inlet hollow block (6), and a liquid outlet joint (11) is fixedly mounted on the top of the liquid outlet hollow block (7).

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