Ultrasonic transducer with fault indication

Abstract

The utility model discloses an ultrasonic transducer with fault indication. Comprising a shell, a heat dissipation ring, a gland, a vibrator, piezoelectric ceramics, a rear reflecting plate, a pre-tightening bolt, an electrode slice, an electrode lead, a detection indication unit, a wiring socket and a wiring plug, the heat dissipation ring is arranged on the shell; the detection indication unit comprises a fault detection unit, a processing circuit and an indication lamp; the electrode lead is connected with the piezoelectric ceramic, the sampling element and the wiring socket, and the processing circuit is electrically connected with the fault detection unit and the indicating lamp. When the distance between the driving power supply and the transducer is far, whether the transducer works normally is indicated, the situation that equipment works abnormally and the efficiency is reduced due to the fact that the transducer cannot be found in time after stopping working is avoided, meanwhile, the heat dissipation ring of the shell reduces the working temperature of the transducer, the reliability of the transducer is improved, and wide application prospects are achieved.

Description

Technical Field

[0001] The utility model relates to an ultrasonic transducer with fault indication, which is used in the field where ultrasonic waves need to be generated. Background Art

[0002] Equipment that requires ultrasound, such as vibrating screens, is prone to being blocked by materials and requires ultrasound to work together to clear the screen. Due to the high dust content in the environment, the ultrasonic power supply and the ultrasonic transducer are far apart. When the ultrasonic power supply fails, the ultrasonic transducer fails, or the line is broken, the ultrasonic transducer stops working, and the on-site staff cannot find it in time. The vibrating screen quickly becomes blocked, the equipment efficiency drops sharply, and even accidents occur.

[0003] At the same time, since it is difficult for the ultrasonic transducer to completely match the grid, the ultrasonic transducer generates a lot of heat, a large temperature rise, and a high surface temperature. On the one hand, the reliability of the transducer is reduced. On the other hand, when screening explosive materials such as flour, the surface temperature of the transducer is too high and it is easy to be dangerous. The temperature rise of ordinary transducers is too large. When the temperature rise exceeds the Curie point of the transducer ceramic, the transducer fails. Utility Model Content

[0004] In order to overcome the above defects, the purpose of the utility model is to provide a new type of ultrasonic transducer with fault indication.

[0005] To achieve the above-mentioned object, the ultrasonic transducer with fault indication of the utility model comprises: a cylindrical shell, an ultrasonic transducer unit is arranged in the cylindrical shell; a wiring socket or a wiring plug is arranged at the bottom of the cylindrical shell; the wiring socket or the wiring plug is provided with two electrodes; one end of the wiring socket or the wiring plug is arranged outside the cylindrical shell, and the electrode of the wiring socket or the wiring plug located in the cylindrical shell is connected to the ultrasonic transducer unit through the electrode lead in the cylinder;

[0006] It also includes a fault indication unit, which includes a fault detection unit, a processing unit and a fault indication unit that are connected in sequence; wherein the fault detection unit is used to detect whether the ultrasonic transducer unit is in a working state; the processing unit is used to process the signal of the fault detection unit and output it to the fault indication unit, and the fault indication unit performs an alarm indication by sound and light.

[0007] Furthermore, a plurality of heat dissipation rings are coaxially arranged outside the cylindrical shell and arranged at intervals.

[0008] Furthermore, the fault detection unit and the processing unit are arranged in the cylindrical shell.

[0009] Furthermore, the fault indication unit is arranged outside the cylindrical shell.

[0010] Furthermore, the fault indication unit is arranged on the wiring socket or the wiring plug.

[0011] Furthermore, the fault detection unit is a transformer or an inductor, a capacitor, or a resistor connected in series between the ultrasonic transducer unit electrode and the input power line.

[0012] Furthermore, the fault detection unit is a transformer or a mutual inductor, the primary coil of the transformer or the mutual inductor is connected in series between the ultrasonic transducer unit electrode and the input power line, and the secondary coil of the transformer or the mutual inductor is connected to the processing unit.

[0013] The utility model samples the current signal on the electrode lead through the fault detection unit, and after being processed by the processing circuit, indicates the working state of the ultrasonic transducer through the indicator light. When the transducer works normally, the indicator light is lit; when the transducer stops working, the indicator light goes out. The indicator light is set on the transducer, and the on-site staff can see it at a glance. The detection indication unit works by using the current on the electrode lead, and does not need to provide a separate power supply.

[0014] The heat dissipation ring integrated with the shell increases the heat dissipation area on the one hand, and on the other hand, when it vibrates synchronously with the screen machine, the breeze generated increases the flow of air, greatly increasing the heat dissipation capacity and effectively reducing the temperature rise of the transducer.

[0015] The utility model detects the working current of the transducer and displays the working status of the transducer through an indicator light. The indicator light is arranged on the transducer. When the transducer stops working due to various reasons, the indicator light goes out and the on-site staff can find it in time. The heat dissipation ring on the shell reduces the temperature rise of the transducer and improves the reliability of the transducer. The utility model has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic structural diagram of an ultrasonic transducer with fault indication according to Example 1.

[0017] Figure 2 The diagram is a schematic structural diagram of an ultrasonic transducer with fault indication in which a detection indicating unit is arranged outside a housing in accordance with Embodiment 2.

[0018] Figure 3 The diagram is a schematic structural diagram of an ultrasonic transducer with fault indication in which a detection indicating unit is arranged on a wiring plug in accordance with a third embodiment.

[0019] Figure 4 This is a circuit schematic diagram of the utility model.

[0020] Among them: 1-transducer mounting thread, 2-vibrator, 3-cover, 4-cover screw, 5-heat dissipation ring, 6-electrode sheet, 7-piezoelectric ceramic, 8-rear reflector, 9-housing, 10-electrode lead, 11-insulating tube, 12-pre-tightening bolt, 13-fault detection unit, 14-processing circuit, 15-indicator light, 16-circuit board, 17-wiring socket, 18-wiring plug. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 direct connection, or an indirect connection 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.

[0024] The function of the ultrasonic transducer is to convert the input electrical power into mechanical power (i.e. ultrasonic wave) and then transmit it. The ultrasonic power supply converts the electrical energy into a high-frequency and high-voltage electrical signal to match the transducer system. The utility model aims to obtain the current / voltage signal on the electrode lead in the sampling tube through the fault detection unit, and after being processed by the processing circuit, the working status of the ultrasonic transducer is indicated by the indicator light. When the transducer works normally, the indicator light is lit; when the transducer stops working, the indicator light goes out. The indicator light is set on the transducer, and the on-site staff can see it at a glance. Since the fault detection unit uses the voltage / current on the electrode lead to work, there is no need to provide a separate power supply.

[0025] As shown in the figure, the ultrasonic transducer with fault indication of the utility model comprises: a cylindrical shell, an ultrasonic transducer unit is arranged in the cylindrical shell; a wiring socket or a wiring plug is arranged at the bottom of the cylindrical shell; the wiring socket or the wiring plug is provided with two electrodes; one end of the wiring socket or the wiring plug is arranged outside the cylindrical shell, and the electrode of the wiring socket or the wiring plug located in the cylindrical shell is connected to the ultrasonic transducer unit through the electrode lead in the cylinder;

[0026] It also includes a fault indication unit, which includes a fault detection unit, a processing unit and a fault indication unit connected in sequence; wherein the fault detection unit is used to detect whether the ultrasonic transducer unit is in a working state; Figure 4 As shown, the fault detection unit can be a transformer (mutual inductor), inductor, capacitor, resistor, etc. connected in series between the ultrasonic transducer unit electrode and the input power line; the processing unit obtains the power required for work from the secondary of its transformer (mutual inductor) or from the two ends of the inductor, capacitor, resistor and outputs it to the fault indication unit after rectification, voltage stabilization and other processing; the fault indication unit can be an indicator light, such as an LED, etc. The indicator light is on during normal operation, and when a fault occurs in part of the cylindrical shell or an external fault occurs, the fault detection unit cannot obtain power, so the fault indication unit will be extinguished, thereby achieving the indication effect.

[0027] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] like Figure 1 and Figure 2 As shown, an ultrasonic transducer with fault indication in an embodiment of the utility model includes a transducer mounting thread 1, a vibrator 2, a gland 3, a gland screw 4, a heat dissipation ring 5, an electrode sheet 6, a piezoelectric ceramic 7, a rear reflector 8, a housing 9, an electrode lead 10, an insulating tube 11, a pre-tightening bolt 12, a fault detection unit 13, a processing circuit 14, an indicator light 15, a circuit board 16, a wiring socket 17, and a wiring plug 18.

[0030] The vibrator 2, piezoelectric ceramics 7, electrode sheet 6, rear reflector 8 and pre-tightening bolt 12 constitute an ultrasonic generating unit, which is connected to the outside through the transducer mounting thread 1; the ultrasonic generating unit is installed in the housing 9 and fixed by the gland 3 and the gland screw 4; a heat dissipation ring 5 is arranged on the outer wall of the housing 9; the fault detection unit 13, the processing circuit 14 and the indicator light 15 are welded to the circuit board 16, and then installed in the housing 9, and the indicator light 15 extends out of the housing 9; the fault detection unit 13 is a current transformer, including a magnetic core and a coil, the coil is wound on the magnetic core, and the coil lead is connected to the processing circuit 14; one of the two electrode leads 10 is directly connected to the wiring socket 17, and the other line passes through the magnetic core and then is connected to the wiring socket 17; the wiring socket 17 is connected to the output line of the driving power supply through the wiring plug 18.

[0031] Preferably, the fault detection unit 13, the processing circuit 14, the indicator light 15, and the circuit board 16 are arranged outside the housing 9 for easy installation;

[0032] Preferably, the fault detection unit 13, the processing circuit 14, the indicator light 15, and the circuit board 16 are arranged on the wiring plug 18, which is low in cost.

[0033] The working principle of the ultrasonic transducer with fault indication in the embodiment of the utility model is as follows:

[0034] When the transducer is working normally, the ultrasonic generating unit composed of the vibrator 2, the piezoelectric ceramic 7, the electrode sheet 6, the rear reflector 8 and the pre-tightening bolt 12 sends ultrasonic waves outward, and a high-frequency current flows through the electrode lead 10. Since one of the electrode leads 10 passes through the middle of the magnetic core of the fault detection unit 13, a high-frequency magnetic field is generated in the magnetic core. The high-frequency magnetic field induces a voltage at both ends of the coil of the fault detection unit 13. After the voltage is processed by the processing circuit 14, the indicator light 15 is illuminated, indicating that the transducer is in a normal working state. When the transducer stops working due to various reasons, the working current is lost in the electrode lead 10, and the indicator light 15 goes out, indicating that the transducer has stopped working. When the device is working, the transducer vibrates synchronously with the device. On the one hand, the heat dissipation ring 5 increases the heat dissipation area of ​​the heat dissipation housing 9, and on the other hand, it is equivalent to a small fan, generating a breeze, increasing air flow, increasing convection heat dissipation, and reducing the temperature rise of the transducer.

[0035] Example 2

[0036] Figure 2 This is another embodiment of the utility model, an ultrasonic transducer with fault indication and a detection indicating unit arranged outside the shell. Since the internal space of the transducer is small, the detection indicating unit is arranged outside the shell for easy installation.

[0037] Example 3

[0038] Figure 3This is another embodiment of the utility model, a detection indicating unit is arranged on a wiring plug and has a fault indicating ultrasonic transducer. The advantage of such arrangement is that when the transducer is replaced, the detection indicating unit can be retained, thereby reducing costs.

[0039] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0040] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An ultrasonic transducer with fault indication, characterized in that: include: A cylindrical shell, wherein an ultrasonic transducer unit is arranged in the cylindrical shell; a wiring socket or a wiring plug is arranged at the bottom of the cylindrical shell; the wiring socket or the wiring plug is provided with two electrodes; one end of the wiring socket or the wiring plug is arranged outside the cylindrical shell, and the electrode of the wiring socket or the wiring plug located in the cylindrical shell is connected to the ultrasonic transducer unit through an electrode lead in the cylinder; It also includes a fault indication unit, which includes a fault detection unit, a processing unit and a fault indication unit that are connected in sequence; wherein the fault detection unit is used to detect whether the ultrasonic transducer unit is in a working state; the processing unit is used to process the signal of the fault detection unit and output it to the fault indication unit, and the fault indication unit performs an alarm indication through sound and light.

2. The ultrasonic transducer with fault indication according to claim 1, characterized in that: A plurality of heat dissipation rings arranged at intervals are coaxially arranged outside the cylindrical shell.

3. The ultrasonic transducer with fault indication according to claim 1, characterized in that: The fault detection unit and the processing unit are arranged in the cylindrical shell.

4. The ultrasonic transducer with fault indication according to claim 1, characterized in that: The fault indicating unit is arranged outside the cylindrical shell.

5. The ultrasonic transducer with fault indication according to claim 1, characterized in that: The fault indication unit is arranged on the wiring socket or the wiring plug.

6. The ultrasonic transducer with fault indication according to claim 1, characterized in that: The fault detection unit is a transformer or an inductor, a capacitor, or a resistor connected in series between the ultrasonic transducer unit electrode and the input power line.

7. The ultrasonic transducer with fault indication according to claim 1, characterized in that: The fault detection unit is a transformer or a mutual inductor, the primary coil of the transformer or the mutual inductor is connected in series between the ultrasonic transducer unit electrode and the input power supply, and the secondary coil of the transformer or the mutual inductor is connected to the processing unit.

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