Constant-temperature protection type electric heating tube

Abstract

The utility model provides a constant temperature protection type electric heating tube, which relates to the technical field of electric heating tubes, and comprises an electric heating tube main body, a protection sleeve connected to the top of the electric heating tube main body, a heating body arranged in the protection sleeve, a cavity arranged in the electric heating tube main body, a base connected to the bottom of the electric heating tube main body, and two power connection ends connected to the bottom of the base. A protective shell is arranged outside the base; the protection assembly is arranged between the protection shell and the base and is used for protecting the power connection end; and the power-off assembly is arranged in the electric heating tube main body and is used for overheating power-off protection. According to the electric heating tube, through the arrangement of the protection assembly, the power connection end can be contained in the protection shell, the situation that the power connection end is damaged due to collision is avoided, through the arrangement of the power-off assembly, the current of the heating body can be cut off when the temperature is too high, and disasters caused by the high temperature are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating tubes, in particular to a constant temperature protection type electric heating tube. Background Technique

[0002] The electric heating tube, also known as an electric heating element, is a common electric heating component, widely used in industrial, commercial and household environments. The electric heating tube is also called a heating tube or a heating wire. Its structure is to place a coiled heating wire (resistance wire) in a metal tube. The two ends of the heating wire have lead rods or lead wires, and it has the advantages of high thermal efficiency, safety and reliability, simple structure, easy installation and high mechanical strength.

[0003] However, in the process of using the existing electric heating tubes, there is no overheat protection structure, resulting in situations such as fires caused by too high temperatures of the electric heating tubes. At the same time, the power connection ends of the existing electric heating tubes are usually exposed. When storing and taking them, they are easily collided, resulting in damage to the power connection ends and affecting the normal use of the electric heating tubes. Content of the Utility Model

[0004] The purpose of the utility model is to solve the shortcomings existing in the background technique, and provide a constant temperature protection type electric heating tube. Through the setting of the protection component, the power connection end can be received into the protection shell to avoid damage caused by collision of the power connection end. Through the setting of the power-off component, the current of the heating element can be cut off when the temperature is too high, avoiding disasters caused by high temperatures.

[0005] To achieve the above purpose, the utility model provides the following technical solutions. A constant temperature protection type electric heating tube includes:

[0006] An electric heating tube main body, a protection sleeve is connected to the top of the electric heating tube main body, a heating element is arranged inside the protection sleeve, a cavity is opened inside the electric heating tube main body, a base is connected to the bottom of the electric heating tube main body, two power connection ends are connected to the bottom of the base, and a protection shell is arranged outside the base;

[0007] A protection component arranged between the protection shell and the base, used to protect the power connection end; and

[0008] A power-off component arranged inside the electric heating tube main body, used for overheat power-off protection.

[0009] Further, the power-off component includes:

[0010] A connection cavity opened inside the electric heating tube main body, an insulating plate is installed inside the connection cavity, and the heating element is connected to the insulating plate;

[0011] A conductive block connected to the bottom of the insulating plate, and the conductive block is connected to the heating element;

[0012] A moving groove opened inside the connection cavity, a moving plate is slidably connected inside the moving groove, and a power connection block is connected to the top of the moving plate.

[0013] Further, two power connection terminals are connected to the bottom of the base, a constant temperature controller is connected to the top of the base, and the constant temperature controller is located inside the connection cavity. Two wires are provided inside the base, and both ends of the wires are respectively connected to the constant temperature controller and the power connection terminals. A connection wire is connected to the top of the constant temperature controller, and the connection wire is connected to the power connection block.

[0014] Further, a conduit is connected between the cavity and the moving groove. A return spring is connected inside the moving groove. One end of the return spring is connected to a piston plate, and one side of the moving plate is connected to the piston plate.

[0015] Further, the protection component includes:

[0016] Two card slots opened on the outer side of the base, and the two card slots are symmetrically arranged;

[0017] A plurality of ejecting grooves opened on the outer side of the protective shell, an ejecting rod is penetrated inside the ejecting groove, and one end of the ejecting rod protrudes from the outer surface of the protective shell and is connected to a pulling plate;

[0018] An ejecting block connected to one end of the ejecting rod, a clamping block is connected to one side of the ejecting block, and one end of the clamping block extends into the card slot.

[0019] Further, a limiting groove communicating with the ejecting groove is opened inside the protective shell, a limiting block connected to the ejecting block is slidably connected inside the limiting groove, and a limiting spring is connected between the limiting block and the limiting groove.

[0020] Further, an insulating layer is provided between the heating element and the protective sleeve, and the insulating layer is composed of magnesium oxide powder.

[0021] The present utility model provides a constant temperature protection type electric heating tube, which has the following beneficial effects:

[0022] The advantages of the present utility model are that through the setting of the protection component, the power connection terminals can be received into the protective shell, avoiding damage to the power connection terminals due to collision, and prolonging the service life of the main body of the electric heating tube. Secondly, through the setting of the power-off component, when the temperature is too high, the influence of temperature on the gas can be used to generate an external force and used to cut off the current of the heating element, avoiding disasters caused by high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0024] Figure 2 This is the overall structural sectional view of the present utility model.

[0025] Figure 3 This is the half-sectional view of the protective shell structure of the present utility model.

[0026] Figure 4 This is the Figure 2 enlarged view of part A in the present utility model.

[0027] Figure 5 This is the Figure 2 enlarged view of part B in the present utility model.

[0028] Figures 1-5 In the figure: 1. Main body of electric heating tube; 101. Heating element; 1011. Conductive block; 102. Insulating layer; 103. Protective sleeve; 2. Cavity; 201. Connecting cavity; 202. Insulating plate; 203. Duct; 204. Moving groove; 205. Return spring; 206. Moving plate; 207. Power connection block; 3. Base; 301. Power connection end; 302. Conducting wire; 303. Constant temperature controller; 304. Connecting wire; 4. Protective shell; 401. Ejection groove; 402. Ejection rod; 403. Ejection block; 404. Clamping block; 405. Limiting groove; 406. Limiting block; 407. Limiting spring; 5. Card slot. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope protected by the present application.

[0030] The following disclosure provides many different implementation manners or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various implementation manners and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can be aware of the application of other processes and / or the use of other materials.

[0031] The embodiments of the present application provide a constant temperature protection type electric heating tube, and the following provides a detailed description of this constant temperature protection type electric heating tube. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments.

[0032] The present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Embodiment 1

[0034] Please refer to Figures 1-5 In [the figure], a constant-temperature protection type electric heating tube provided in this embodiment includes: an electric heating tube main body 1, a protection sleeve 103 is connected to the top of the electric heating tube main body 1, a heating element 101 is arranged inside the protection sleeve 103, a cavity 2 is opened inside the electric heating tube main body 1, a base 3 is connected to the bottom of the electric heating tube main body 1, two power connection terminals 301 are connected to the bottom of the base 3, and a protection shell 4 is arranged outside the base 3; a protection component arranged between the protection shell 4 and the base 3 for protecting the power connection terminals 301; and a power-off component arranged inside the electric heating tube main body 1 for overheat power-off protection.

[0035] Among them, through the setting of the protection component, the power connection terminals 301 can be received into the protection shell 4, avoiding damage to the power connection terminals 301 due to collision, and prolonging the service life of the electric heating tube main body 1. Secondly, through the setting of the power-off component, when the temperature is too high, the influence of temperature on the gas can be used to generate an external force, and the current of the heating element 101 can be disconnected to avoid disasters caused by high temperature.

[0036] Embodiment 2

[0037] On the basis of Embodiment 1, the power-off component includes: a connection cavity 201 opened inside the electric heating tube main body 1, an insulating plate 202 is installed inside the connection cavity 201, and the heating element 101 is connected to the insulating plate 202; a conductive block 1011 connected to the bottom of the insulating plate 202, and the conductive block 1011 is connected to the heating element 101; a moving groove 204 opened inside the connection cavity 201, a moving plate 206 is slidably connected inside the moving groove 204, a power connection block 207 is connected to the top of the moving plate 206, two power connection terminals 301 are connected to the bottom of the base 3, a constant-temperature controller 303 is connected to the top of the base 3, and the constant-temperature controller 303 is located inside the connection cavity 201. Two wires 302 are arranged inside the base 3, and both ends of the wires 302 are respectively connected to the constant-temperature controller 303 and the power connection terminals 301. A connection wire 304 is connected to the top of the constant-temperature controller 303, and the connection wire 304 is connected to the power connection block 207. A conduit 203 is connected between the cavity 2 and the moving groove 204. A return spring 205 is connected inside the moving groove 204, one end of the return spring 205 is connected to a piston plate, and one side of the moving plate 206 is connected to the piston plate.

[0038] When the electric heating tube main body 1 is in use, the power connection terminals 301 are energized, so that the current sequentially passes through the wires 302, the constant-temperature controller 303, the connection wire 304, the power connection block 207 and the conductive block 1011 and enters the heating element 101, causing the heating element 101 to heat up.

[0039] During the heating process, to avoid overheating of the main body 1 of the electric heating tube, at this time, the heat dissipated by the heating element 101 partially located in the cavity 2 is used to heat the gas inside the cavity 2, causing the air pressure to rise. At this time, the gas is discharged into the moving groove 204 through the conduit 203 and is located on one side of the piston plate, causing the air pressure on one side of the piston plate to rise. At this time, the piston plate is subjected to the external force of the pressure difference. When the pressure of the pressure difference received by the piston plate is greater than the elastic force exerted by the return spring 205, the piston plate will push the moving plate 206 to move, thereby separating the power connection block 207 on the moving plate 206 from the conductive block 1011, disconnecting the circuit to avoid continuous heating of the heating element 101 and resulting in overheating. After the temperature inside the cavity 2 gradually recovers, the air pressure drops. At this time, the piston plate pulls the moving plate 206 back to its original position under the action of the elastic force of the return spring 205. At this time, the power connection block 207 contacts the conductive block 1011 again, and the heating element 101 is re-energized to generate heat.

[0040] Among them, the constant temperature controller 303 is an electronic temperature controller, which can automatically adjust the power of the electric heating tube according to the set temperature to ensure that the heating temperature is stable within a certain range.

[0041] Embodiment 3

[0042] On the basis of Embodiment 1, the protection component includes: two card slots 5 opened on the outer side of the base 3, and the two card slots 5 are symmetrically arranged; a plurality of ejection slots 401 opened on the outer side of the protective shell 4, an ejection rod 402 is inserted inside the ejection slot 401, and one end of the ejection rod 402 protrudes from the outer surface of the protective shell 4 and is connected with a pull plate; an ejection block 403 connected to one end of the ejection rod 402, a clamping block 404 is connected to one side of the ejection block 403, and one end of the clamping block 404 extends into the card slot 5. A limiting slot 405 communicated with the ejection slot 401 is opened inside the protective shell 4, and a limiting block 406 connected to the ejection block 403 is slidably connected inside the limiting slot 405. A limiting spring 407 is connected between the limiting block 406 and the limiting slot 405. An insulating layer 102 is provided between the heating element 101 and the protective sleeve 103, and the insulating layer 102 is composed of magnesium oxide powder. One end of the clamping block 404 is provided with an inclined surface.

[0043] Since the power connection end 301 of the main body 1 of the electric heating tube is usually exposed to the outside and is easily damaged by collision, affecting the use of the main body 1 of the electric heating tube. Therefore, when there is the main body 1 of the electric heating tube, through the setting of the protective shell 4, the power connection end 301 can be received into the protective shell 4 to play a protective role;

[0044] When in use, the ejector rod 402 can be driven to move by the pull plate. At this time, the ejector rod 402 drives the clamping block 404 through the ejector block 403 to separate from the clamping groove 5, releasing the clamping and fixing of the protective shell 4 and the base 3, so that the protective shell 4 can move upward to move the power connection terminal 301 at the bottom of the base 3 out.

[0045] During the upward movement of the protective shell 4, the inclined surface of the clamping block 404 in the other ejector groove 401 contacts the base 3 and is squeezed into the ejector groove 401 by the base 3. At this time, the limiting spring 407 is compressed by the limiting block 406 to generate elastic force. When the clamping block 404 corresponds to the position of the clamping groove 5, the clamping block 404 rebounds under the action of the elastic force of the limiting spring 407, so that the clamping block 404 is inserted into the clamping groove 5 to fix the position of the protective shell 4. At the same time, through the arrangement of the limiting groove 405 and the limiting block 406, the moving direction and distance of the ejector block 403, the ejector rod 402 and the clamping block 404 can be limited.

[0046] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0047] The above has introduced in detail a thermostatic protection type electric heating tube provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A constant temperature protection electric heating tube, characterized in that: include: An electric heating pipe body (1), wherein a protective sleeve (103) is connected to the top of the electric heating pipe body (1), a heating element (101) is arranged inside the protective sleeve (103), a cavity (2) is opened inside the electric heating pipe body (1), a base (3) is connected to the bottom of the electric heating pipe body (1), two power terminals (301) are connected to the bottom of the base (3), and a protective shell (4) is arranged on the outside of the base (3); A protection component disposed between the protection shell (4) and the base (3), used for protecting the power connection terminal (301); and A power-off component arranged inside the electric heating pipe body (1) is used for overheating power-off protection.

2. The constant temperature protection type electric heating tube according to claim 1, characterized in that: The power-off component comprises: A connecting cavity (201) is provided inside the electric heating pipe body (1), an insulating plate (202) is installed inside the connecting cavity (201), and the heating element (101) is connected to the insulating plate (202); A conductive block (1011) connected to the bottom of the insulating plate (202), and the conductive block (1011) is connected to the heating element (101); A movable groove (204) is provided inside the connection cavity (201), a movable plate (206) is slidably connected inside the movable groove (204), and a power connection block (207) is connected to the top of the movable plate (206).

3. The constant temperature protection type electric heating tube according to claim 2, characterized in that: The base (3) is connected to two power terminals (301) at the bottom, the base (3) is connected to a thermostatic controller (303) at the top, and the thermostatic controller (303) is located in the connection cavity (201), two wires (302) are arranged inside the base (3), and the two ends of the wires (302) are respectively connected to the thermostatic controller (303) and the power terminals (301), the thermostatic controller (303) is connected to a connecting wire (304) at the top, and the connecting wire (304) is connected to the power connection block (207).

4. The constant temperature protection type electric heating tube according to claim 2, characterized in that: A conduit (203) is connected between the cavity (2) and the movable groove (204), a return spring (205) is connected inside the movable groove (204), one end of the return spring (205) is connected to a piston plate, and one side of the movable plate (206) is connected to the piston plate.

5. The constant temperature protection type electric heating tube according to claim 1, characterized in that: The protection component comprises: Two card slots (5) are provided on the outside of the base (3), and the two card slots (5) are symmetrically arranged; A plurality of ejection grooves (401) are provided on the outside of the protective shell (4), an ejection rod (402) is provided inside the ejection groove (401), one end of the ejection rod (402) protrudes from the outer surface of the protective shell (4) and is connected to a pull plate; An ejection block (403) is connected to one end of the ejection rod (402), one side of the ejection block (403) is connected to a clamping block (404), and one end of the clamping block (404) extends into the clamping slot (5).

6. The constant temperature protection type electric heating tube according to claim 5, characterized in that: A limiting groove (405) communicating with the ejection groove (401) is provided inside the protective shell (4), a limiting block (406) connected to the ejection block (403) is slidably connected inside the limiting groove (405), and a limiting spring (407) is connected between the limiting block (406) and the limiting groove (405).

7. The constant temperature protection type electric heating tube according to claim 1, characterized in that: An insulating layer (102) is provided between the heating element (101) and the protective sleeve (103), and the insulating layer (102) is composed of magnesium oxide powder.

Images