Sealed waterproof ultrasonic transducer plastic meter body

Abstract

The utility model relates to the technical field of transducers, in particular to a sealed and waterproof ultrasonic transducer plastic meter body which comprises a transduction circuit board outer shell and a flow measuring pipeline, two measuring joints are arranged on the outer wall of the flow measuring pipeline, an annular groove is formed in the upper end face of each measuring joint, a sealing washer is inserted into each annular groove, and the flow measuring pipeline is connected with the sealing washer. An annular clamping block is integrally formed on the lower surface of the sealing gasket; a circuit board is installed in the transduction circuit board outer shell, a pair of round inserting columns are integrally formed at the bottom end of the transduction circuit board outer shell, the concave blind holes are inserted into the measuring connector in a one-to-one matching mode, and concave blind holes are formed in the pair of round inserting columns; on one hand, the sealing waterproof effect of the sealing washer can be improved, on the other hand, the sealing washer can be conveniently positioned, and position deviation during installation of the sealing washer is effectively avoided.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of transducers, in particular to a sealed and waterproof plastic body of an ultrasonic transducer. Background Art

[0002] Ultrasonic flow meters are mainly used for flow testing. They use the ultrasonic time difference method for calculations, and use the time difference of ultrasonic transmission to calculate the flow rate and new calculations through the circuit board algorithm. The ultrasonic transducer is an important component in the ultrasonic flow meter, and the ultrasonic transducer consists of a plastic body, a matching layer, a piezoelectric ceramic disc, a backing, a lead cable, and an array receiver. The plastic body of the ultrasonic transducer not only completes the functions of installation, positioning, and sealing, but also directly affects the amplitude and intensity of ultrasonic propagation, the propagation direction, and the distribution of the beam, which determines the performance and parameters of the ultrasonic transducer, and directly affects the accuracy, pressure resistance, stability, and reliability of the ultrasonic flowmeter.

[0003] Currently, two pairs of separate ultrasonic transducers are mainly assembled on the pipe on the market and sealed with a silicone ring. However, there is a gap between the existing silicone ring and the upper end surface of the measuring joint, the sealing effect is poor, and water seepage problems often occur. Utility Model Content

[0004] The utility model mainly provides a sealed and waterproof plastic body of an ultrasonic transducer, which is used to solve the technical problems raised in the above-mentioned background technology.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A sealed and waterproof ultrasonic transducer plastic meter body, comprising a transducer circuit board outer shell and a flow measurement pipeline, wherein the outer wall of the flow measurement pipeline is provided with two measurement joints, the upper end surface of the measurement joint is provided with an annular groove, a sealing gasket is inserted in the annular groove, and an annular clamping block is integrally formed on the lower surface of the sealing gasket;

[0007] A circuit board is installed in the transducer circuit board housing, a pair of round plug posts are integrally formed at the bottom end of the transducer circuit board housing, and the recessed blind holes are adapted to be plugged into the inside of the measuring joint one by one, and recessed blind holes are provided in the inside of the pair of round plug posts.

[0008] Furthermore, an annular boss is integrally formed on the outer wall of the measuring joint, a plurality of return springs are fixed along the circumference on the upper surface of the annular boss, and an annular sealing sleeve is fixed on the top of the plurality of return springs.

[0009] Furthermore, a pair of connection blocks are integrally formed on the outer wall of the annular boss, and screw holes are provided on the pair of connection blocks.

[0010] Furthermore, the longitudinal sections of the annular groove and the annular block are both semicircular.

[0011] Furthermore, transducer devices are installed in the recessed blind holes, and the transducer devices are electrically connected to the circuit board.

[0012] Furthermore, four corners of the bottom surface of the outer shell of the transducer circuit board are provided with mounting through holes, and fixing screws are inserted into the mounting through holes.

[0013] Furthermore, both ends of the flow measurement pipeline are equipped with pipeline joints, and the outer walls of the pipeline joints are provided with threaded grooves.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model provides an annular groove on the upper end face of the measuring joint, a sealing gasket is inserted in the annular groove, and an annular clamping block is integrally formed on the lower surface of the sealing gasket. After the annular clamping block is inserted into the annular groove, on the one hand, the sealing and waterproof effect of the sealing gasket can be improved, and on the other hand, it is also convenient to position the sealing gasket, effectively avoiding position deviation during installation of the sealing gasket; further, an annular boss is integrally formed on the outer wall of the measuring joint, and a plurality of reset springs are fixed on the upper surface of the annular boss along the circumference, and an annular sealing sleeve is fixed on the top of the plurality of reset springs. When the round plug column and the measuring joint are assembled, the reset spring can be continuously compressed, and under the action of the rebound force of the reset spring, the annular sealing sleeve can be firmly pressed on the connecting gap between the round plug column and the measuring joint, thereby further improving the sealing and waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the assembly structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 Schematic diagram of the structure of local components;

[0019] Figure 3 It is a schematic diagram of the split structure of the flow measurement pipeline and its outer wall components in the utility model;

[0020] Figure 4It is a bottom view structural diagram of the sealing gasket in the utility model;

[0021] Figure 5 It is a schematic diagram of the half-section structure of the outer shell of the energy conversion circuit board in the utility model.

[0022] In the figure: 1-transducer circuit board housing; 2-flow measurement pipeline; 3-measuring joint; 4-annular groove; 5-sealing gasket; 6-annular clamping block; 7-circuit board; 8-round plug column; 9-sunk blind hole; 10-annular boss; 11-reset spring; 12-annular sealing sleeve; 13-connecting block; 14-screw hole; 15-transducer device; 16-mounting through hole; 17-pipe joint; 18-threaded groove. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0024] Please refer to the attached Figure 1-5 As shown, a sealed and waterproof ultrasonic transducer plastic body comprises a transducer circuit board outer body 1 and a flow measurement pipe 2, the outer wall of the flow measurement pipe 2 is provided with two measuring joints 3, the upper end surface of the measuring joint 3 is provided with an annular groove 4, a sealing gasket 5 is inserted into the annular groove 4, and an annular clamping block 6 is integrally formed on the lower surface of the sealing gasket 5, the longitudinal sections of the annular groove 4 and the annular clamping block 6 are both semicircular, after the annular clamping block 6 is inserted into the annular groove 4, on the one hand, the sealing and waterproof effect of the sealing gasket 5 can be improved, and on the other hand, it is also convenient to position the sealing gasket 5, effectively avoiding positional displacement of the sealing gasket 5 during installation; pipe joints 17 are installed at both ends of the flow measurement pipe 2, and the outer walls of the pipe joints 17 are provided with threaded grooves 18, and the threaded grooves 18 are provided to facilitate the connection of the pipe joint 17 with an external water pipe.

[0025] A circuit board 7 is installed in the transducer circuit board housing 1. A pair of round plug posts 8 are integrally formed at the bottom end of the transducer circuit board housing 1, and the recessed blind holes 9 are adapted to be plugged into the measuring connector 3 one by one. Recessed blind holes 9 are provided inside the pair of round plug posts 8. Transducer devices 15 are installed in the recessed blind holes 9, and the transducer devices 15 are electrically connected to the circuit board 7. The transducer devices 15 and the circuit board 7 are common knowledge in the field, and the utility model is mainly used to protect the sealing structure, so the utility model no longer explains in detail the circuit connection between the transducer device 15 and the circuit board 7; mounting through holes 16 are provided at the four corners of the bottom surface of the transducer circuit board housing 1, and fixing screws are inserted into the mounting through holes 16.

[0026] An annular boss 10 is also integrally formed on the outer wall of the measuring joint 3, and a plurality of return springs 11 are fixed along the circumference on the upper surface of the annular boss 10, and an annular sealing sleeve 12 is fixed to the top of the plurality of return springs 11, and the outer diameter of the annular sealing sleeve 12 is the same as the outer diameter of the annular boss 10, and the inner diameter of the annular sealing sleeve 12 is the same as the outer diameter of the measuring joint 3; a pair of connecting blocks 13 are integrally formed on the outer wall of the annular boss 10, and screw holes 14 are provided on the pair of connecting blocks 13, and the screw holes 14 are arranged one by one with the mounting through holes 16, and the measuring joint 3 and the transducer circuit board housing 1 can be fixed by fixing screws.

[0027] When assembling the utility model, first, the annular block 6 integrally formed on the lower surface of the sealing gasket 5 is inserted into the annular groove 4, and then a pair of round plug posts 8 integrally formed at the bottom end of the transducer circuit board housing 1 are respectively aligned and inserted into the two measuring joints 3, and then the measuring joints 3 and the transducer circuit board housing 1 are fixed by fixing screws. After fixing, the reset spring 11 is in a compressed state. Under the rebound force of the reset spring 11, the annular sealing sleeve 12 can be firmly pressed on the connecting gap between the round plug post 8 and the measuring joint 3, thereby further improving the sealing and waterproof effect.

[0028] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A sealed and waterproof plastic body of an ultrasonic transducer, comprising a transducer circuit board housing (1) and a flow measurement pipe (2), characterized in that: The outer wall of the flow measurement pipe (2) is provided with two measurement joints (3), the upper end surface of the measurement joint (3) is provided with an annular groove (4), a sealing gasket (5) is inserted into the annular groove (4), and the lower surface of the sealing gasket (5) is integrally formed with an annular clamping block (6); A circuit board (7) is installed in the transducer circuit board outer shell (1), and a pair of round plug posts (8) are integrally formed at the bottom end of the transducer circuit board outer shell (1), and recessed blind holes (9) are provided inside the pair of round plug posts (8), and the recessed blind holes (9) are adapted to be plugged into the inside of the measuring connector (3) one by one.

2. A sealed and waterproof ultrasonic transducer plastic body according to claim 1, characterized in that: The outer wall of the measuring joint (3) is also integrally formed with an annular boss (10), a plurality of return springs (11) are fixed along the circumference of the upper surface of the annular boss (10), and annular sealing sleeves (12) are fixed to the top ends of the plurality of return springs (11).

3. A sealed and waterproof ultrasonic transducer plastic body according to claim 2, characterized in that: A pair of connection blocks (13) are integrally formed on the outer wall of the annular boss (10), and screw holes (14) are provided on the pair of connection blocks (13).

4. The sealed and waterproof plastic body of an ultrasonic transducer according to claim 1, characterized in that: The longitudinal cross-sections of the annular groove (4) and the annular clamping block (6) are both semicircular.

5. The sealed and waterproof plastic body of an ultrasonic transducer according to claim 1, characterized in that: The sunken blind holes (9) are each equipped with a transducer device (15), and the transducer device (15) is electrically connected to the circuit board (7).

6. The sealed and waterproof ultrasonic transducer plastic body according to claim 1, characterized in that: Four corners of the bottom surface of the energy conversion circuit board outer shell (1) are provided with mounting through holes (16), and fixing screws are inserted into the mounting through holes (16).

7. The sealed and waterproof ultrasonic transducer plastic body according to claim 1, characterized in that: Pipe joints (17) are installed at both ends of the flow measurement pipeline (2), and thread grooves (18) are provided on the outer walls of the pipeline joints (17).

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