A urea tube electric heating device

Abstract

This invention relates to the field of electric heating technology, and more particularly to an electric heating device for urea tubes, comprising a quick-connect connector, a urea tube, a heating wire, and a temperature control switch. Heating clips are installed at both ends of the urea tube, and the quick-connect connector is fixedly installed at the other end of each heating clip. The heating wire is wound around the urea tube, and a heating film is embedded on the surface of each heating clip. The temperature control switch is also installed on the outer wall of one of the heating clips. Both ends of the heating wire are connected to the heating clips on both sides via terminals, and an additional terminal is connected to the end of one of the heating wires. This invention not only protects the circuit, connector, and pipeline safety, but also saves electricity and provides stable heating power. Furthermore, it uses injection molding to tightly fit the connector surface, making operation simple and convenient. It can reduce consumption while improving production efficiency and provides a faster and more convenient fixation to the connector surface.

Description

Technical Field

[0001] This invention relates to the field of electric heating technology, and more particularly to an electric heating device for urea tubes. Background Technology

[0002] Currently, the main electric heating methods used in the industry for urea pipe joints are PTC thermistors and resistance wire heating. During PTC thermistor heating, the temperature of the PTC thermistor on the PCB exceeds the melting point of the joint material, easily causing joint erosion. While resistance wire heating offers more stable power, the wire wrapping process is time-consuming and results in material waste during production. Therefore, a device is urgently needed to solve these problems. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art by proposing an electric heating device for urea tubes.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A urea tube electric heating device includes a quick-connect connector, a urea tube, a heating wire, and a temperature control switch. Heating clips are installed at both ends of the urea tube. The quick-connect connector is fixedly installed at the other end of the heating clip. The heating wire is wound around the urea tube. A heating film is embedded on the surface of the heating clip. The temperature control switch is also installed on the outer wall of one of the heating clips. The two ends of the heating wire are connected to the heating clips on both sides through wiring terminals. An additional wiring terminal is connected to the end of one of the heating wires.

[0006] Preferably, the outer wall of the heating clamp has a positioning bracket on its surface, and the temperature control switch is snapped into the positioning bracket of one of the heating clamps.

[0007] Preferably, double-sided adhesive is adhered to both the inner and outer sides of the heating film, and the heating film is connected and fixed to the heating clip and the temperature control switch by the double-sided adhesive.

[0008] Preferably, the heating film is connected to a short wire and a long wire, the short wire being connected to a temperature control switch, and the long wire being connected to a terminal block and a heating wire.

[0009] Preferably, the quick-connect connector has an annular groove inside, and the edge of the heating clip has a protrusion integral with it, and the protrusion and the annular groove are fixed together by snap-fit.

[0010] Preferably, the heating wire includes a first heating wire and two second heating wires. The two second heating wires include a short heating wire and a long heating wire. The first heating wire passes through two terminals and is connected and fixed to the heating clips on both sides. One end of the short heating wire is connected to the heating clip on one side, and one end of the long heating wire is connected to the heating clip on the other side. The other ends of the two second heating wires pass through the terminals and are connected to the other terminal.

[0011] Preferably, the heating film, the heating wire, and the temperature control switch are connected in series.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] By employing an online control method for heating the connector, a temperature control switch controls the heating film and resistance wire to heat the connector. When the connector surface reaches the specified temperature, the temperature control switch closes, and vice versa. This design protects the circuit, connector, and pipeline, while saving electricity and ensuring stable heating power. In addition, the invention has a reasonable structural design, using injection molding to fit tightly to the connector surface, and is simple and convenient to operate. It can reduce consumption while improving production efficiency, and is more quickly and conveniently fixed to the connector surface. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a urea tube electric heating device proposed in this invention;

[0015] Figure 2 This is a three-dimensional structural schematic diagram of a urea tube electric heating device proposed in this invention;

[0016] Figure 3 for Figure 2 The left view;

[0017] Figure 4 for Figure 2 The right view;

[0018] Figure 5 This is a schematic diagram of the heating circuit of an electric heating device for urea tubes proposed in this invention.

[0019] In the diagram: 1 Quick-connect connector, 2 Heating clip, 3 Heating film, 4 Wiring terminal, 5 Heating wire, 6 Temperature control switch. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Reference Figure 1-5A urea tube electric heating device includes a quick-connect connector 1, a urea tube, a heating wire 5, and a temperature control switch 6. Heating clips 2 are installed at both ends of the urea tube. The purpose of the heating clips 2 is to generate heat. The quick-connect connector 1 is fixedly installed at the other end of the heating clip 2. An annular groove is opened inside the quick-connect connector 1. A boss is provided on the edge of the heating clip 2, which is integrated with it. The boss and the annular groove are fixed by snap-fit. The heating wire 5 is wound on the urea tube. The heating wire 5 is used to conduct heat. A heating film 3 is embedded on the surface of the heating clip 2. The heating film 3 is also used to assist heating. A temperature control switch 6 is also installed on the outer wall of one of the heating clips 2. A positioning bracket is opened on the surface of the outer wall of the heating clip 2. The temperature control switch 6 is snapped into the positioning bracket of one of the heating clips 2. The function of the temperature control switch 6 is to control the heating. The two ends of the heating wire 5 are connected to the two heating clips 2 on both sides through terminals 4 respectively. An additional terminal 4 is connected to the end of one of the heating wires 5.

[0022] The heating film 3 has double-sided adhesive on both its inner and outer sides. The heating film 3 is connected and fixed to the heating clip 2 and the temperature control switch 6 by the double-sided adhesive. The heating film 3 is connected to a short wire and a long wire. The short wire is connected to the temperature control switch 6, and the long wire is connected to the terminal 4 and the heating wire 5. The heating film 3, the heating wire 5 and the temperature control switch 6 are connected in series.

[0023] In addition, the heating wire 5 is provided with a first heating wire and two second heating wires. The two second heating wires include a short heating wire and a long heating wire. The first heating wire passes through two terminals 4 and is connected and fixed to the heating clips 2 on both sides. One end of the short heating wire is connected to the heating clip 2 on one side, and one end of the long heating wire is connected to the heating clip 2 on the other side. The other ends of the two second heating wires pass through the terminals 4 and are connected to the other terminal 4.

[0024] Working principle: When the power is connected to terminal 4, the heating film 3 and heating wire 5 start to heat. A normally closed temperature control switch 6 is connected in series in the circuit. When the quick connector 1 reaches the specified temperature, the temperature control switch 6 opens, the circuit is disconnected, heating stops, and the circuit, quick connector 1, and pipeline are protected. At the same time, power is saved. When the temperature of quick connector 1 drops to the set temperature, the temperature control switch 6 closes, the circuit is reconnected and heating begins. This cycle continues.

[0025] When installing the temperature control switch 6, peel off the double-sided adhesive on the heating film 3, stick it to the surface of the heating clip 2, and then install the temperature control switch 6 in the positioning bracket and stick it to the heating film 3.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A urea tube electric heating device, comprising a quick-connect connector (1), a urea tube, a heating wire (5), and a temperature control switch (6), characterized in that, Heating clips (2) are installed at both ends of the urea tube. A quick-connect connector (1) is fixedly installed at the other end of the heating clip (2). The heating wire (5) is wound around the urea tube. A heating film (3) is embedded on the surface of the heating clip (2). The temperature control switch (6) is also installed on the outer wall of one of the heating clips (2). The two ends of the heating wire (5) are connected to the heating clips (2) on both sides through wiring terminals (4). An additional wiring terminal (4) is connected to the end of one of the heating wires (5).

2. The urea tube electric heating device according to claim 1, characterized in that, The outer wall of the heating clip (2) is provided with a positioning bracket on its surface, and the temperature control switch (6) is snapped into the positioning bracket of one of the heating clips (2).

3. The urea tube electric heating device according to claim 1, characterized in that, The inner and outer sides of the heating film (3) are covered with double-sided adhesive tape. The heating film (3) is connected and fixed to the heating clip (2) and the temperature control switch (6) by double-sided adhesive tape.

4. The urea tube electric heating device according to claim 1, characterized in that, The heating film (3) is connected to a short wire and a long wire. The short wire is connected to the temperature control switch (6), and the long wire is connected to the terminal block (4) and the heating wire (5).

5. The urea tube electric heating device according to claim 1, characterized in that, The quick-connector (1) has an annular groove inside, and the heating clip (2) has a protrusion integral with it at its edge. The protrusion and the annular groove are fixed together by snap-fit.

6. The urea tube electric heating device according to claim 1, characterized in that, The heating wire (5) is provided with a first heating wire and two second heating wires. The two second heating wires include a short heating wire and a long heating wire. The first heating wire passes through two terminals (4) and is connected and fixed to the heating clips (2) on both sides. One end of the short heating wire is connected to the heating clip (2) on one side, and one end of the long heating wire is connected to the heating clip (2) on the other side. The other ends of the two second heating wires pass through the terminals (4) and are connected to the other terminal (4).

7. The urea tube electric heating device according to claim 1, characterized in that, The heating film (3), the heating wire (5), and the temperature control switch (6) are connected in series.

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