A detachable heating element electric heating furnace

Abstract

This utility model discloses a detachable heating element electric heating furnace, including a furnace body and two electric heaters disposed on its upper part. Two connecting pipes are fixedly connected to the top of the furnace body. The heating ends of the electric heaters pass through the corresponding connecting pipes and extend into the furnace body. A buckle is fixedly fitted onto the outer bottom of the electric heater, and the outer bottom of the buckle is designed with a conical structure. A quick-release self-locking structure is installed on the connecting pipes. This utility model, through a series of structures, facilitates convenient and quick vertical insertion, removal, and locking of the electric heaters. The vertical insertion and removal method effectively avoids the phenomenon of the control power cable knob connected to the outside being entangled when the electric heater rotates, which is common with traditional threaded connections. This reduces the risk of damage to the cables connected to the outside of the electric heater, achieving safe, convenient, and quick installation and removal of the electric heater, improving safety, convenience, and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electric heating furnace technology, specifically to an electric heating furnace with a detachable heating element. Background Technology

[0002] An electric heating boiler is an auxiliary device used for heating in daily life. It is widely used in the field of electric boilers and comes in various types, including wall-mounted and floor-standing models. Existing electric heating boilers consist of the boiler body, a water-cooled heat exchange coil installed inside, heat transfer oil, and electric heating elements (electric heaters). The electric heaters are connected to an external controller and power supply via cables. They heat the heat transfer oil, which in turn heats the water flowing through the water-cooled heat exchange coils, thus providing heating. For example, wall-mounted boilers using WX-FL3KW, 6KW, or 9KW electric heating elements come in two types: side-mounted and top-mounted. Top-mounted elements have the advantage of preventing the heat transfer medium inside the boiler from leaking out, making subsequent disassembly and cleaning of scale easier.

[0003] Existing electric heating furnaces using top-mounted electric heating elements have limitations in practical applications. Since the heating elements are connected to an external controller and power supply via cables, the multi-turn rotation during installation and removal easily leads to cable tangling, twisting, or even damage. This design makes it difficult to achieve safe, convenient, and quick installation and removal of the heating elements while preventing external cable twisting, thus affecting usability and reducing installation and removal efficiency. Therefore, this application proposes a detachable heating element electric heating furnace to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a detachable heating element electric heating furnace to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a detachable heating element electric heating furnace, comprising an electric heating furnace body and two electric heaters disposed on its upper part, wherein the top of the electric heating furnace body is connected and fixedly connected to two connecting pipes, the heating end of the electric heaters passes through the corresponding connecting pipes and extends into the electric heating furnace body, and a buckle is fixedly fitted on the outer bottom of the electric heaters, the outer bottom of the buckle being configured as a conical structure.

[0006] The connecting pipe is equipped with a quick-release self-locking structure, which includes:

[0007] The elastic sealing sleeve is bonded and fixed to the top of the corresponding connecting pipe and squeezed tightly into contact with the bottom of the electric heater.

[0008] A connecting sleeve is fitted onto the outside of the corresponding connecting pipe;

[0009] A circular support sleeve is fixedly fitted onto the outside of the corresponding connecting sleeve;

[0010] The elastic buckle stop assembly consists of two sets, which are respectively installed on the inner walls of the corresponding round support sleeves on both sides. The elastic buckle stop assembly is used to automatically lock and limit the buckle sleeve when the electric heater moves down and drives it to move down, and is also used to unlock the sleeve quickly and easily by simply pulling it.

[0011] The spring-loaded push-up assembly consists of two sets, which are respectively installed on both sides of the top of the corresponding connecting sleeve and are pressed tightly against the bottom of the buckle. The spring-loaded push-up assembly is used to drive the buckle to move automatically upward and offset from the locking position when unlocking, so that personnel can directly insert and remove the electric heater vertically.

[0012] Preferably, the connecting sleeve is fixedly fitted onto the outside of the corresponding connecting pipe by welding.

[0013] Preferably, the connecting sleeve can be lifted and fitted onto the outside of the corresponding connecting pipe. The inner side of the connecting sleeve is provided with an internal thread, and the outer side of the connecting pipe is provided with an external thread that meshes with the corresponding internal thread. Multiple handles are fixedly connected to the outer side of the connecting sleeve in a ring at equal intervals.

[0014] Preferably, the elastic buckle limiting assembly includes a trapezoidal locking block, a first spring, a pull rod, and a pull ring. Rectangular grooves are provided on both inner walls of the circular support sleeve. The trapezoidal locking block is slidably fitted into the corresponding rectangular groove. The adjacent sides of two trapezoidal locking blocks located in the same circular support sleeve are both set as inclined surfaces. The two inclined surfaces are symmetrically arranged and adapted to the inclined surface of the conical structure on the outer side of the corresponding buckle sleeve. The first spring is fixedly connected between the inner wall of the corresponding trapezoidal locking block and the side of the rectangular groove away from its opening. The pull rod is fixedly connected to the side of the corresponding trapezoidal locking block away from the buckle sleeve. One end of the pull rod extends movably out of the corresponding circular support sleeve and is fixedly connected to the outer side of the pull ring. The bottom of the trapezoidal locking block is in movable contact with the top of the corresponding buckle sleeve.

[0015] Preferably, the spring support push assembly includes a push rod and a compression spring. Vertical guide grooves are provided on both sides of the top end of the connecting sleeve. The push rod is slidably sleeved in the corresponding vertical guide groove. The compression spring is in a compressed state and fixedly connected to the bottom end of the corresponding push rod. The bottom end of the compression spring is in movable contact with the inner wall of the bottom of the corresponding vertical guide groove. The top end of the push rod is set as an arc-shaped structure and is in movable contact with the bottom of the buckle sleeve.

[0016] Preferably, the bottom of the electric heater is fixedly connected to a positioning sleeve that is movably inserted into the corresponding connecting pipe, and the top of the electric heating furnace body has two through holes that are respectively connected to the inside of the corresponding connecting pipe, with the heating end of the electric heater located in the corresponding through hole.

[0017] Preferably, the electric heating furnace body is filled with heat-conducting oil. The electric heating furnace body includes an inlet pipe, an outlet pipe, and a heat-conducting coil. The inlet pipe and the outlet pipe are respectively embedded and fixed on both sides of the electric heating furnace body. The heat-conducting coil is located in the electric heating furnace body and is connected and fixed between the inlet pipe and the outlet pipe. The heat-conducting coil is located behind the heating ends of the two electric heaters.

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

[0019] 1. Through the combination of the electric heater, connecting pipe, buckle, positioning sleeve, elastic buckle limit component and spring support push component, the electric heater can be installed and automatically locked by simple insertion, and can be unlocked by simple pulling. It is convenient and quick to vertically insert, remove and install, and lock the electric heater. The vertical insertion and removal method can effectively avoid the phenomenon that the control power supply cable knob connected to the outside is easily entangled when the electric heater is rotated, which is common with traditional threaded connections. It reduces the risk of damage to the cable connected to the outside of the electric heater, realizes the safe, convenient and quick installation and removal of the electric heater, and improves the safety, convenience and efficiency of installation and removal.

[0020] 2. By using a different method to connect the sleeve, the internal and external threads of the connecting pipe, and the handle, it is convenient to adjust the tightness of the elastic sealing sleeve vertically. The adjustable tightness of the sealing sleeve allows for flexible adjustment when the elastic sealing sleeve ages and thins, thereby improving the sealing performance and service life of the sealing components.

[0021] This utility model, through a series of structures, facilitates convenient and quick vertical plugging, unplugging, assembling, and locking of the electric heater. The vertical plugging and unplugging method effectively avoids the phenomenon that traditional threaded connections can easily cause the control power supply cable knob connected to the outside to become entangled when the electric heater rotates, reducing the risk of damage to the cable connected to the outside of the electric heater. This achieves safe, convenient, and quick assembly and disassembly of the electric heater, improving the safety, convenience, and efficiency of assembly and disassembly. Attached Figure Description

[0022] Figure 1 This is a partial cross-sectional view of an electric heating furnace with a detachable heating element according to Embodiment 1 of this utility model.

[0023] Figure 2 This is a three-dimensional structural diagram of the connecting pipe, electric heater, and quick-release self-locking connecting component of a detachable heating element electric heating furnace according to Embodiment 1 of this utility model.

[0024] Figure 3 for Figure 1 A magnified structural diagram of part A in the diagram;

[0025] Figure 4 for Figure 3 A magnified structural diagram of part B in the diagram;

[0026] Figure 5 This is a partial cross-sectional view of an electric heating furnace with a detachable heating element according to Embodiment 2 of this utility model.

[0027] Figure 6 for Figure 5 A magnified structural diagram of part C in the diagram.

[0028] In the diagram: 1. Electric heating furnace body; 101. Connecting pipe; 102. Elastic sealing sleeve; 2. Electric heater; 201. Buckle sleeve; 202. Positioning sleeve; 3. Connecting sleeve; 301. Vertical guide groove; 302. Top rod; 303. Compression spring; 304. Handle rod; 4. Round support sleeve; 401. Rectangular groove; 402. Trapezoidal locking block; 403. Pull rod; 404. Pull ring; 405. First spring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] like Figures 1 to 4 As shown, the present embodiment proposes a detachable heating element electric heating furnace, including an electric heating furnace body 1 and two electric heaters 2 disposed on its upper part. The top of the electric heating furnace body 1 is connected and fixed with two connecting pipes 101. The heating end of the electric heater 2 passes through the corresponding connecting pipe 101 and extends into the electric heating furnace body 1. A fastener 201 is fixedly fitted on the outer bottom of the electric heater 2. The outer bottom of the fastener 201 is set with a conical structure.

[0032] The connecting pipe 101 is equipped with a quick-release self-locking structure, which includes:

[0033] The elastic sealing sleeve 102 is bonded and fixed to the top of the corresponding connecting pipe 101 and squeezed into contact with the bottom of the electric heater 2.

[0034] Connecting sleeve 3 is fitted onto the outside of the corresponding connecting pipe 101;

[0035] The circular support sleeve 4 is fixedly sleeved on the outside of the corresponding connecting sleeve 3;

[0036] The elastic buckle limit assembly consists of two sets, which are respectively installed on the inner walls of the corresponding round support sleeve 4 on both sides. The elastic buckle limit assembly is used to automatically lock and limit the buckle sleeve 201 when the electric heater 2 moves down and drives it to move down, and is also used to unlock the work conveniently and quickly by simply pulling.

[0037] The spring support push assembly consists of two sets, which are respectively installed on both sides of the top of the corresponding connecting sleeve 3 and are pressed tightly against the bottom of the buckle 201. The spring support push assembly is used to drive the buckle 201 to move automatically upward and offset from the locking position when unlocking, so that personnel can directly perform vertical insertion and removal of the electric heater 2.

[0038] In this embodiment, the bottom of the electric heater 2 is fixedly connected to a positioning sleeve 202 that is movably inserted into the corresponding connecting pipe 101. The top of the electric heating furnace body 1 has two through holes that are respectively connected to the inside of the corresponding connecting pipe 101. The heating end of the electric heater 2 is located in the corresponding through hole. The through hole is provided for the heating end of the electric heater 2 to move through. The positioning sleeve 202 is provided for lateral positioning when inserted into the corresponding connecting pipe 101. The electric heating furnace body 1 is filled with heat-conducting oil. The electric heating furnace body 1 includes an inlet pipe, an outlet pipe, and a heat-conducting coil. The inlet pipe and the outlet pipe are respectively embedded and fixed on both sides of the electric heating furnace body 1. The heat-conducting coil is located inside the electric heating furnace body 1 and is connected and fixed between the inlet pipe and the outlet pipe. The heat-conducting coil is located behind the heating ends of the two electric heaters 2.

[0039] Furthermore, the connecting sleeve 3 is fixedly fitted onto the outside of the corresponding connecting pipe 101 by welding.

[0040] Furthermore, such as Figure 2 , 3 As shown in Figure 4, the elastic buckle stop assembly includes a trapezoidal buckle block 402, a first spring 405, a pull rod 403, and a pull ring 404. Rectangular grooves 401 are provided on both inner walls of the circular support sleeve 4. The trapezoidal buckle block 402 is slidably sleeved in the corresponding rectangular groove 401. The two trapezoidal buckle blocks 402 located in the same circular support sleeve 4 have their adjacent sides set as inclined surfaces. The two inclined surfaces are symmetrically arranged and adapted to the inclined surface of the tapered structure on the outer side of the corresponding buckle sleeve 201. The first spring 405 is fixedly connected between the inner wall of the corresponding trapezoidal buckle block 402 and the side of the rectangular groove 401 away from its opening. The pull rod 403 is fixedly connected to the side of the corresponding trapezoidal buckle block 402 away from the buckle sleeve 201. One end of the pull rod 403 extends movably out of the corresponding circular support sleeve 4 and is fixedly connected to the outer side of the pull ring 404. The bottom of the trapezoidal buckle block 402 is in movable contact with the top of the corresponding buckle sleeve 201.

[0041] In this embodiment, a transverse guide hole is provided on the inner wall of the rectangular groove 401 on the side away from its opening, which is slidably fitted to the outer side of the corresponding pull rod 403, so as to allow the pull rod 403 to pass through and guide its transverse sliding.

[0042] In this embodiment, through the cooperation of trapezoidal locking blocks 402, first springs 405, pull rods 403, and pull rings 404, when the electric heater 2 moves downward and drives the buckle 201 downward, the inclined surface of the tapered structure on the outer side of the buckle 201 presses against the inclined surfaces of the corresponding two trapezoidal locking blocks 402. Under the pressure of the inclined surfaces, the two trapezoidal locking blocks 402 slide against each other in the corresponding two rectangular grooves 401 along the inclined surface direction, compressing the two first springs 405. When the buckle 201 moves downward and is offset from the corresponding two trapezoidal locking blocks 402, the two first springs 405, which are in a compressed state, are... The two trapezoidal locking blocks 402 move back to their original positions and lock onto the top of the sleeve 201, thus locking and limiting the movement of the sleeve 201 as the electric heater 2 moves downward. When unlocking is required during subsequent disassembly, the two corresponding pull rings 404 are pulled in opposite directions. These pull rings 404, through the corresponding pull rods 403, cause the two trapezoidal locking blocks 402 to move in opposite directions, releasing the top of the sleeve 201 and compressing the two first springs 405. This allows for convenient and quick unlocking via a simple pull.

[0043] Furthermore, such as Figure 3 As shown, the spring support push assembly includes a push rod 302 and a compression spring 303. Vertical guide grooves 301 are provided on both sides of the top end of the connecting sleeve 3. The push rod 302 is slidably sleeved in the corresponding vertical guide groove 301. The compression spring 303 is in a compressed state and is fixedly connected to the bottom end of the corresponding push rod 302. The bottom end of the compression spring 303 is in movable contact with the bottom inner wall of the corresponding vertical guide groove 301. The top end of the push rod 302 is set with an arc structure and is in movable contact with the bottom of the buckle 201.

[0044] In this embodiment, the push rods 302 and compression springs 303 work together. When the electric heater 2 is inserted and installed, the retaining sleeve 201 presses against the two corresponding push rods 302, causing the push rods 302 to slide downwards within the corresponding vertical guide grooves 301. This compresses and stores energy in the compression springs 303. During the subsequent release of the locking mechanism, the two compression springs 303, now in a compressed state, drive the two corresponding push rods 302 upwards. This, in turn, lifts the electric heater 2 via the retaining sleeve 201, which then engages with the two corresponding trapezoidal locking blocks 402. The staggered design allows the drive sleeve 201 to automatically move upwards and offset from the locking position during unlocking, freeing the hands of personnel to release the pull ring 404. This facilitates direct vertical insertion and removal of the electric heater 2, enabling convenient and quick insertion, removal, and locking of the electric heater 2. The vertical insertion and removal method effectively avoids the problem of the control power cable knob connected to the outside being tangled when the electric heater 2 rotates, which is common with traditional threaded connections. This reduces the risk of damage to the cables connected to the outside of the electric heater 2 and improves the safety and convenience of disassembly and assembly.

[0045] It should be noted that the connecting pipe 101, connecting sleeve 3, round support sleeve 4, trapezoidal clamp 402 and pull rod 403 are all made of stainless steel. The advantages of stainless steel, such as high hardness, high wear resistance and good maintenance-free performance, are utilized to ensure long-term connection and support stability.

[0046] This embodiment facilitates convenient and quick vertical plugging and unplugging of the electric heater 2 for assembly and locking. By using the vertical plugging and unplugging method, the phenomenon that the control power supply cable knob connected to the outside is easily entangled when the electric heater 2 rotates can be effectively avoided, which is common with traditional threaded connections. This reduces the risk of damage to the cable connected to the outside of the electric heater 2, and enables safe, convenient and quick assembly and disassembly of the electric heater 2, improving the safety, convenience and efficiency of assembly and disassembly.

[0047] The usage method of this embodiment is as follows: When the detachable heating element electric heating furnace is in use, when the electric heater 2 moves down and drives the buckle 201 to move down, the inclined surface of the tapered structure on the outside of the buckle 201 presses against the inclined surface of the corresponding two trapezoidal locking blocks 402. Under the pressure of the inclined surface, the two trapezoidal locking blocks 402 slide against each other in the corresponding two rectangular grooves 401 along the inclined surface direction, and compress the two first springs 405. When the buckle 201 moves down and is offset from the corresponding two trapezoidal locking blocks 402, the two first springs 405 in the compressed state drive the corresponding two trapezoidal locking blocks 402 to move back to their original position and lock onto the top of the buckle 201 to perform locking and limiting work. When the electric heater 2 is inserted and installed, the buckle 201 presses against the corresponding two top rods 302, causing the top rods 302 to slide down in the corresponding vertical guide grooves 301, and compress and store energy in the compression springs 303, so as to achieve the effect of automatically locking and limiting the buckle 201 when the electric heater 2 moves down and drives it to move down.

[0048] When unlocking is required during subsequent disassembly and assembly, pull the two corresponding pull rings 404 in the opposite direction. The two pull rings 404, through the corresponding pull rods 403, drive the two trapezoidal locking blocks 402 to move repulsively, releasing the top of the buckle 201 and compressing the two first springs 405. At this time, the two compression springs 303, in their compressed state, drive the corresponding two push rods 302 to move upward, lifting the electric heater 2 through the buckle 201. The buckle 201 then moves upward, offsetting its locking position from the corresponding two trapezoidal locking blocks 402, achieving the effect of automatically moving the buckle 201 upward and offsetting its locking position during unlocking. The pull ring 404 frees up the hands of personnel, allowing for direct vertical insertion and removal of the electric heater 2. When the electric heater 2 moves upward, it causes the corresponding positioning sleeve 202 to separate from the connecting pipe 101, achieving convenient and quick insertion, removal, and locking of the electric heater 2. The vertical insertion and removal method effectively avoids the phenomenon that traditional threaded connections can easily cause the control power supply cable knob connected to the outside to become entangled when the electric heater 2 rotates, reducing the risk of damage to the cable connected to the outside of the electric heater 2. This achieves safe, convenient, and quick installation and removal of the electric heater 2, improving the safety, convenience, and efficiency of installation and removal.

[0049] Example 2

[0050] like Figures 5 to 6 As shown, this embodiment differs from Embodiment 1 in that: the connecting sleeve 3 can be lifted and fitted onto the outside of the corresponding connecting tube 101, the inner side of the connecting sleeve 3 is provided with an internal thread, the outer side of the connecting tube 101 is provided with an external thread that meshes with the corresponding internal thread, and multiple handles 304 are fixedly connected to the outer side of the connecting sleeve 3 in a ring at equal intervals.

[0051] It should be noted that the internal thread clearance on the inner side of the connecting sleeve 3 is a high wear-resistant and load-bearing specification of 0.1-0.2mm. The external thread is compatible with the internal thread and meshes tightly. The stainless steel material has the advantages of high hardness, high wear resistance and good maintenance-free effect, ensuring long-term connection and drive support stability.

[0052] This embodiment facilitates subsequent vertical adjustments to the tightness and sealing of the elastic sealing sleeve 102. By adjusting the tightness and sealing, it is convenient to make flexible adjustments when the elastic sealing sleeve 102 ages and thins, thereby improving the sealing degree during subsequent installation and extending the service life of the sealing component.

[0053] The usage method of this embodiment is as follows: Unlike Embodiment 1, it also has the following functions: Utilizing the provided internal and external threads and the handle 304, rotating the handle 304 drives the connecting sleeve 3 to rotate. Under the meshing action of the internal and external threads, the connecting sleeve 3 rotates and moves downwards or upwards. The connecting sleeve 3 drives the corresponding two elastic buckle limiting components to move up and down, adjusting the clamping and limiting height. Because the clamping and limiting height is adjustable, the locking height of the electric heater 2 can be flexibly adjusted, thereby adjusting the tightness and sealing degree of the elastic sealing sleeve 102. This adjustable tightness and sealing degree allows for flexible adjustment when the elastic sealing sleeve 102 becomes thinner due to aging, improving the sealing degree during subsequent installation and extending the service life of the sealing components.

[0054] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A detachable heating element electric heating furnace, comprising an electric heating furnace body (1) and two electric heaters (2) disposed on its upper part, characterized in that: The top of the electric heating furnace body (1) is connected and fixed with two connecting pipes (101). The heating end of the electric heater (2) passes through the corresponding connecting pipe (101) and extends into the electric heating furnace body (1). The bottom outer side of the electric heater (2) is fixedly fitted with a buckle (201). The bottom outer side of the buckle (201) is set with a conical structure. The connecting pipe (101) is equipped with a quick-release self-locking structure, which includes: The elastic sealing sleeve (102) is bonded and fixed to the top of the corresponding connecting pipe (101) and squeezed into contact with the bottom of the electric heater (2); Connecting sleeve (3) is fitted onto the outside of the corresponding connecting tube (101); The circular support sleeve (4) is fixedly sleeved on the outside of the corresponding connecting sleeve (3); The elastic buckle stop assembly consists of two sets, which are respectively installed on the inner walls of the corresponding round support sleeves (4) on both sides; The spring support push assembly consists of two sets, which are respectively installed on both sides of the top of the corresponding connecting sleeve (3) and are pressed tightly against the bottom of the buckle (201).

2. The detachable heating element electric heating furnace according to claim 1, characterized in that: The connecting sleeve (3) is fixedly mounted on the outside of the corresponding connecting pipe (101) by welding.

3. The detachable heating element electric heating furnace according to claim 1, characterized in that: The connecting sleeve (3) can be lifted and fitted onto the outside of the corresponding connecting tube (101). The inner side of the connecting sleeve (3) is provided with an internal thread, and the outer side of the connecting tube (101) is provided with an external thread that meshes with the corresponding internal thread. Multiple handles (304) are fixedly connected to the outer side of the connecting sleeve (3) in a ring at equal intervals.

4. The detachable heating element electric heating furnace according to claim 1, characterized in that: The elastic buckle limiting assembly includes a trapezoidal locking block (402), a first spring (405), a pull rod (403), and a pull ring (404). Rectangular grooves (401) are provided on the inner walls of both sides of the circular support sleeve (4). The trapezoidal locking block (402) is slidably fitted into the corresponding rectangular groove (401). The sides of two trapezoidal locking blocks (402) located within the same circular support sleeve (4) that are close to each other are both set as inclined surfaces. The two inclined surfaces are symmetrically arranged and tapered towards the outer side of the corresponding buckle sleeve (201). The inclined surfaces of the structure are adapted to each other. The first spring (405) is fixedly connected between the inner wall of the corresponding trapezoidal block (402) and the rectangular groove (401) away from its opening. The pull rod (403) is fixedly connected to the side of the corresponding trapezoidal block (402) away from the buckle (201). One end of the pull rod (403) extends movably out to the outside of the corresponding round support sleeve (4) and is fixedly connected to the outside of the pull ring (404). The bottom of the trapezoidal block (402) is in movable contact with the top of the corresponding buckle (201).

5. A detachable heating element electric heating furnace according to claim 1, characterized in that: The spring support push assembly includes a push rod (302) and a compression spring (303). Vertical guide grooves (301) are provided on both sides of the top end of the connecting sleeve (3). The push rod (302) is slidably sleeved in the corresponding vertical guide groove (301). The compression spring (303) is in a compressed state and is fixedly connected to the bottom end of the corresponding push rod (302). The bottom end of the compression spring (303) is in movable contact with the bottom inner wall of the corresponding vertical guide groove (301). The top end of the push rod (302) is set with an arc-shaped structure and is in movable contact with the bottom of the buckle (201).

6. A detachable heating element electric heating furnace according to claim 1, characterized in that: The bottom of the electric heater (2) is fixedly connected to a positioning sleeve (202) that is movably inserted into the corresponding connecting pipe (101). The top of the electric heating furnace body (1) has two through holes that are respectively connected to the inside of the corresponding connecting pipe (101). The heating end of the electric heater (2) is located in the corresponding through hole.

7. A detachable heating element electric heating furnace according to claim 1, characterized in that: The electric heating furnace body (1) is filled with heat-conducting oil. The electric heating furnace body (1) includes an inlet pipe, an outlet pipe and a heat-conducting coil. The inlet pipe and the outlet pipe are respectively embedded and fixed on both sides of the electric heating furnace body (1). The heat-conducting coil is located inside the electric heating furnace body (1) and is connected and fixed between the inlet pipe and the outlet pipe. The heat-conducting coil is located behind the heating end of the two electric heaters (2).

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