Encircling type electric heating equipment

Abstract

The utility model discloses surrounding type electric heating equipment, and relates to the technical field of electric heating equipment, the surrounding type electric heating equipment comprises a container to be heated, surrounding units are wound on the peripheral surface of the container to be heated, a plurality of surrounding units are mutually hinged through hinge shafts, heating units are clamped in the surrounding units, and the heating units abut against the outer side wall of the container to be heated; the peripheral surface of the surrounding unit is coated with a heat preservation unit; the heating unit comprises a resistance wire, the periphery of the resistance wire is coated with quartz tubes, the resistance wire is electrically connected with an external power supply, the plurality of quartz tubes are connected through insulating heads, and the quartz tubes abut against the outer side wall of the container to be heated; connecting units are installed at the joints of the heat preservation units. According to the encircling type electric heating equipment, the gap between the containers to be heated can be reduced, more uniform and stable heating can be realized, the heating efficiency and the heating effect are ensured, and the service life of the resistance wire is effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of electric heating equipment technology, and in particular to a wraparound electric heating device. Background Technology

[0002] An electric heating device is a device that consumes electrical energy and converts it into heat energy to heat materials that need to be heated. It is widely used in various industrial production equipment. A typical application is in the hopper of an injection molding machine to soften raw materials or in other drying equipment.

[0003] The existing heater has a large contact gap with the container to be heated, resulting in low energy utilization and low heat transfer efficiency. As a result, the temperature difference between the surface of the heated object and the surface of the resistance wire is too large, leading to a short lifespan of the resistance wire.

[0004] Developing a wraparound electric heating device that minimizes the gap between the heating unit and the container to be heated, ensuring heat transfer efficiency and heating effect, and guaranteeing the service life of the resistance wire, has become a technical challenge that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a wraparound electric heating device to solve the problems listed in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model discloses a ring-type electric heating device, including a container to be heated. A surrounding unit is wound around the outer circumferential surface of the container to be heated, and multiple surrounding units are hinged to each other through a hinge shaft. A heating unit is sandwiched inside the surrounding unit, and the heating unit abuts against the outer wall of the container to be heated.

[0008] The outer peripheral surface of the surrounding unit is covered with a heat-insulating unit;

[0009] The heating unit includes a resistance wire, which is surrounded by a quartz tube. The resistance wire is electrically connected to an external power source. Multiple quartz tubes are connected by insulating heads. The quartz tubes abut against the outer wall of the container to be heated.

[0010] A connecting unit is installed at the joint of the insulation unit.

[0011] Preferably, the surrounding unit includes a surrounding body with a crescent-shaped cross-section. A first hinge ear is fixedly installed at one end of the surrounding body, and a second hinge ear is fixedly installed at the other end of the surrounding body. The first hinge ear and the second hinge ear are positioned opposite each other.

[0012] The inner wall of the surrounding component body abuts against the outer surface of the quartz tube.

[0013] Preferably, the first hinge ear and the second hinge ear are coaxial, and a hinge shaft is installed between the first hinge ear and the second hinge ear.

[0014] Preferably, the insulation unit includes an outer shell layer and an insulation layer, the inner side of the insulation layer is fixedly connected to the outer side of the surrounding body, and the outer side of the insulation layer is fixedly connected to the inner side of the outer shell layer.

[0015] Preferably, a stepped stagger is formed at the joint between the outer shell layer and the insulation layer, and the stepped stagger abuts against each other.

[0016] Preferably, the connecting unit includes connecting ears, which are fixedly connected to the outer side wall of the outer shell layer, and the connecting ears are located on both sides of the seam of the outer shell layer;

[0017] The connecting lugs are connected via a double-headed bolt assembly.

[0018] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0019] This utility model discloses a ring-shaped electric heating device, which hinges multiple ring units to adapt to containers of different sizes to be heated. The hinged design ensures the stability of the connection between the multiple ring units, preventing them from detaching during use. The smaller gaps between the ring units allow for a denser arrangement of quartz tubes and resistance wires on the outer wall of the container, effectively ensuring heating efficiency. The smaller heating gaps also allow for more uniform heating of the container, reducing the temperature difference between the resistance wires and the container, and extending the lifespan of the resistance wires. Furthermore, the outer shell and insulation layer feature stepped staggered ends, allowing them to overlap and preventing gaps, thus ensuring both insulation and heating efficiency during the heating process. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a top view schematic diagram of a wraparound electric heating device according to the present invention;

[0022] Figure 2 This is an enlarged schematic diagram of part A of the present invention;

[0023] Figure 3 This is a three-dimensional schematic diagram of a wraparound electric heating device according to the present invention;

[0024] Figure 4This is a three-dimensional schematic diagram of the encircling unit of this utility model;

[0025] Figure 5 This is a three-dimensional schematic diagram of the combined state of the surrounding unit of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Outer shell layer; 2. Insulation layer; 3. Resistance wire; 4. Quartz tube; 5. Surrounding unit; 501. First hinge ear; 502. Surrounding body; 503. Second hinge ear; 6. Double-headed bolt assembly; 7. Connecting ear; 8. Insulating head; 9. Container to be heated. Detailed Implementation

[0027] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0028] like Figure 1-5 As shown, a ring-type electric heating device includes a container 9 to be heated, a surrounding unit 5 wrapped around the outer circumferential surface of the container 9, and a plurality of the surrounding units 5 are hinged to each other by a hinge shaft. A heating unit is sandwiched inside the surrounding unit 5, and the heating unit abuts against the outer side wall of the container 9 to be heated.

[0029] The outer peripheral surface of the surrounding unit 5 is covered with a heat-insulating unit;

[0030] The heating unit includes a resistance wire 3, which is surrounded by a quartz tube 4. The resistance wire 3 is electrically connected to an external power source. Multiple quartz tubes 4 are connected by insulating heads 8. The quartz tubes 4 abut against the outer wall of the container 9 to be heated.

[0031] A connecting unit is installed at the joint of the insulation unit.

[0032] like Figure 4-5 As shown, the surrounding unit 5 includes a surrounding body 502, the cross-section of the surrounding body 502 is crescent-shaped, a first hinge ear 501 is fixedly installed at one end of the surrounding body 502, and a second hinge ear 503 is fixedly installed at the other end of the surrounding body 502. The installation positions of the first hinge ear 501 and the second hinge ear 503 are opposite to each other.

[0033] The inner wall of the surrounding body 502 abuts against the outer side of the quartz tube 4;

[0034] The smaller spacing between the components allows for a denser arrangement of quartz tubes and resistance wires on the outer wall of the container to be heated, effectively ensuring heating efficiency. At the same time, the smaller heating gap also allows for more uniform heating of the container and reduces the temperature difference between the resistance wire and the container, thus ensuring the service life of the resistance wire.

[0035] Furthermore, a porous alumina film is provided on the surface of the surrounding component body.

[0036] Specifically, the first hinge ear 501 and the second hinge ear 503 are coaxial, and a hinge shaft is installed between the first hinge ear 501 and the second hinge ear 503, which facilitates the hinge connection of multiple ring units to adapt to containers of different sizes to be heated. The hinge connection method ensures the stability of the connection between multiple ring units and prevents the ring units from detaching from each other during use.

[0037] Specifically, the insulation unit includes an outer shell layer 1 and an insulation layer 2. The inner side of the insulation layer 2 is fixedly connected to the outer side of the surrounding body 502, and the outer side of the insulation layer 2 is fixedly connected to the inner side of the outer shell layer 1.

[0038] The insulation layer effectively reduces heat loss and ensures the heating efficiency of the quartz tube and resistance wire. Meanwhile, the outer shell is made of metal, which facilitates the installation of connecting units on the outer surface to form a clamp for the container to be heated, and provides a certain degree of impact resistance.

[0039] Specifically, a stepped staggered platform is formed at the joint between the outer shell layer 1 and the insulation layer 2. The stepped staggered platform abuts against each other. The two ends of the outer shell layer and the insulation layer adopt a stepped staggered platform, so that the ends of the outer shell layer and the insulation layer can overlap each other, avoiding gaps and ensuring the insulation effect and heating efficiency during the heating process.

[0040] Specifically, the connecting unit includes a connecting ear 7, which is fixedly connected to the outer wall of the outer shell layer 1, and the connecting ear 7 is located on both sides of the seam of the outer shell layer 1;

[0041] The connecting lug 7 is connected via a double-headed bolt assembly 6.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A ring-type electric heating device, comprising a container to be heated (9), characterized in that: The outer circumferential surface of the container to be heated (9) is wrapped with a surrounding unit (5), and multiple surrounding units (5) are hinged to each other by a hinge shaft. A heating unit is sandwiched inside the surrounding unit (5), and the heating unit abuts against the outer wall of the container to be heated (9). The outer peripheral surface of the surrounding unit (5) is covered with a heat-insulating unit; The heating unit includes a resistance wire (3), the resistance wire (3) is surrounded by a quartz tube (4), the resistance wire (3) is electrically connected to an external power source, and multiple quartz tubes (4) are connected by an insulating head (8). The quartz tube (4) abuts against the outer wall of the container to be heated (9). A connecting unit is installed at the joint of the insulation unit.

2. The encircling electric heating device according to claim 1, characterized in that: The surrounding unit (5) includes a surrounding body (502), the cross-section of which is crescent-shaped. A first hinge ear (501) is fixedly installed at one end of the surrounding body (502), and a second hinge ear (503) is fixedly installed at the other end of the surrounding body (502). The first hinge ear (501) and the second hinge ear (503) are positioned opposite each other. The inner wall of the surrounding body (502) abuts against the outer side of the quartz tube (4).

3. The encircling electric heating device according to claim 2, characterized in that: The first hinge ear (501) and the second hinge ear (503) are coaxial, and a hinge shaft is installed between the first hinge ear (501) and the second hinge ear (503).

4. The encircling electric heating device according to claim 3, characterized in that: The insulation unit includes an outer shell layer (1) and an insulation layer (2). The inner side of the insulation layer (2) is fixedly connected to the outer side of the surrounding body (502), and the outer side of the insulation layer (2) is fixedly connected to the inner side of the outer shell layer (1).

5. The encircling electric heating device according to claim 4, characterized in that: The joint between the outer shell layer (1) and the insulation layer (2) is formed with stepped staggered platforms, which abut against each other.

6. The encircling electric heating device according to claim 5, characterized in that: The connecting unit includes a connecting ear (7), which is fixedly connected to the outer wall of the outer shell layer (1), and the connecting ear (7) is located on both sides of the seam of the outer shell layer (1); The connecting lug (7) is connected via a double-headed bolt assembly (6).

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