High-temperature explosion-proof electric heater

Abstract

The present application relates to the technical fields of heater, in particular to a high-temperature explosion-proof electric heater, comprising a mounting shell, a mounting disc is installed at one end of the mounting shell, a plurality of electric heating pipes are installed on the mounting disc at intervals; a fluid inlet is arranged on the lower side wall of the mounting shell, a fluid outlet is arranged on the upper side wall of the mounting shell; the end of the electric heating pipe away from the mounting disc is located in the mounting shell; a protection assembly for protecting each electric heating pipe is arranged in the mounting shell, and a cleaning assembly for cleaning dirt on the outer side of the electric heating pipe and the inner side of the protection assembly is arranged on the mounting disc. In use, the electric heating pipe on the inner side can be prevented from explosion, and the use safety of the electric heater is improved.

Description

Technical Field

[0001] This invention relates to the field of heater technology, and in particular to a high-temperature explosion-proof electric heater. Background Technology

[0002] An electric heater is a device used to heat fluids. Existing electric heaters include a heater housing with a heating wire inside. Heating the heating wire heats the fluid flowing through the housing. However, electric heater explosions frequently occur in some locations. These accidents are generally caused by human error, leading to the heating wire overheating and exceeding the material's maximum temperature resistance limit, causing an explosion. After the explosion, the heating wire may penetrate the housing, causing injury to workers outside. To avoid injury to workers outside the housing during an electric heater explosion, a high-temperature explosion-proof electric heater is urgently needed. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a high-temperature explosion-proof electric heater that provides an explosion-proof effect for the inner heating element during use, thereby improving the safety of the electric heater.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this application provides a high-temperature explosion-proof electric heater, including a mounting housing, a mounting plate at one end of the mounting housing, and a plurality of heating tubes spaced apart on the mounting plate; a fluid inlet is provided on the lower side wall of the mounting housing, and a fluid outlet is provided on the upper side wall of the mounting housing; the end of each heating tube away from the mounting plate is located inside the mounting housing; a protective component is provided inside the mounting housing to protect each heating tube separately, and a cleaning component is provided on the mounting plate to clean dirt from the outside of the heating tube and the inside of the protective component.

[0007] Preferably, the protective assembly includes a support flange fixed to the inner side of the mounting housing, and a plurality of connecting holes are spaced apart along the circumferential direction on the support flange, through which the heating element passes; a protective tube is fixedly installed on the lower side of the support flange and through the connecting holes, and the protective tube is sleeved on the outside of the heating element.

[0008] Preferably, a guide groove is provided on one side of the protective tube near the center of the mounting housing. The guide groove is vertically arranged, and the cleaning component passes through the guide groove to clean the dirt on the inside of the protective tube.

[0009] Preferably, the cleaning assembly includes a drive shaft, one end of which passes through the mounting plate, is located outside the mounting housing, and is connected to a drive motor. The drive motor drives the drive shaft to rotate. The shaft section of the drive shaft located in the mounting housing is threaded with external threads to form a threaded rod section. A mounting sleeve is threadedly connected to the threaded rod section. A support rod is fixed to the outer side of the mounting sleeve along the circumferential direction. The end of the support rod away from the mounting sleeve passes through the guide groove and is connected to a scraper ring. The outer wall of the scraper ring abuts against the protective tube. The heating element passes through the center of the scraper ring, and the inner diameter of the scraper ring is larger than the outer diameter of the heating element.

[0010] Preferably, the outer side of the protective tube is provided with a shielding component to shield the guide groove.

[0011] Preferably, the shielding assembly includes a limiting ring fixed to the side wall of the protective tube, the limiting ring being located at the end of the protective tube away from the mounting plate; a first shielding ring, a second shielding ring, and a third shielding ring are sleeved on the outer side of the protective tube;

[0012] The first shielding ring is sleeved on the outside of the limiting ring. A first inner abutment ring is provided on the inner side of the first shielding ring, at the end furthest from the supporting flange. The first inner abutment ring is located on the side of the limiting ring furthest from the supporting flange. A first outer abutment ring is provided on the outer side of the first shielding ring, at the end furthest from the first inner abutment ring. The inner diameter of the first inner abutment ring is smaller than the outer diameter of the limiting ring. The second shielding ring is sleeved on the outside of the first shielding ring. A second inner abutment ring is provided on the inner side of the second shielding ring, and a second outer abutment ring is provided on the outer side of the second shielding ring. The second inner abutment ring is located at the end of the second shielding ring furthest from the supporting flange and on the side of the first outer abutment ring furthest from the supporting flange. The inner diameter of the second inner abutment ring is smaller than the outer diameter of the first outer abutment ring; the second outer abutment ring is located at the end of the second shielding ring near the supporting flange; the third shielding ring is sleeved on the outside of the second shielding ring, and a third inner abutment ring is provided on the inner side of the third shielding ring. The third inner abutment ring is located at the end of the third shielding ring away from the supporting flange and on the side of the second outer abutment ring away from the supporting flange. The inner diameter of the third inner abutment ring is smaller than the outer diameter of the second outer abutment ring; the end of the third shielding ring away from the third inner abutment ring is fixed to the upper side of the supporting rod; a limiting plate is provided on the outer side of the end of the protective tube away from the supporting flange, and the outer diameter of the limiting plate is larger than the outer diameter of the third shielding ring.

[0013] Preferably, the inner side of the scraper ring is provided with an annular mounting groove, and a rubber ring is embedded in the mounting groove, the inner ring of the rubber ring abutting against the heating tube.

[0014] Preferably, a step is formed at one end of the protective pipe near the supporting flange, and a threaded pipe is integrally formed on the upper side of the step. The threaded pipe passes through the connecting hole, and a connecting nut is threaded to the outer side of the pipe section passing through the connecting hole.

[0015] Preferably, an annular sealing groove is provided on the shaft segment located inside the mounting plate on the drive shaft, and two sealing grooves are provided at intervals along the vertical direction, with a sealing ring provided in the sealing groove.

[0016] Preferably, a support ring is fixed on the drive shaft, the support ring is located between the support flange and the mounting plate, and the support ring abuts against the side of the support flange closest to the mounting plate.

[0017] (III) Beneficial Effects

[0018] This invention provides a high-temperature explosion-proof electric heater. Protective and shielding components located inside the mounting housing can isolate the heating element, achieving an explosion-proof effect and thus improving the safety of the electric heater. Simultaneously, during use, a cleaning component can clean dirt from the inside of the protective components and the outside of the heating element, preventing any impact on the heating performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a high-temperature explosion-proof electric heater according to the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of the A-structure in the middle;

[0021] Figure 3 This is a schematic diagram of a protruding protective component in a high-temperature explosion-proof electric heater according to the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of the B structure.

[0023] Marked in the attached diagram:

[0024] 100. Mounting housing; 110. Fluid inlet; 120. Fluid outlet; 130. Drain pipe; 131. Control valve; 200. Mounting plate; 300. Heating element; 400. Protective assembly; 410. Support flange; 411. Connecting hole; 420. Protective pipe; 421. Step; 422. Threaded pipe; 423. Connecting nut; 424. Guide groove;

[0025] 500. Cleaning assembly; 510. Drive shaft; 511. Threaded rod segment; 512. Sealing groove; 513. Sealing ring; 520. Drive motor; 530. Mounting sleeve; 540. Support rod; 550. Scraper ring; 551. Mounting groove; 552. Rubber ring; 560. Support ring; 600. Shielding assembly; 610. Limiting ring; 620. First shielding ring; 621. First inner abutment ring; 622. First outer abutment ring; 630. Second shielding ring; 631. Second inner abutment ring; 632. Second outer abutment ring; 640. Third shielding ring; 641. Third inner abutment ring; 650. Limiting disc. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example

[0028] This invention provides a high-temperature explosion-proof electric heater, see [link / reference]. Figures 1-4 The system includes a mounting housing 100, with a mounting plate 200 at one end of the housing 100. Multiple heating elements 300 are spaced apart on the mounting plate 200. The heating elements 300 are located inside the housing 100 and can heat the fluid inside. A fluid inlet 110 is provided on the lower side wall of the housing 100, and a fluid outlet 120 is provided on the upper side wall. When heating the fluid, the fluid enters through the fluid inlet 110, passes through the heating elements 300 while passing through the housing 100, and is discharged through the fluid outlet 120 after heating.

[0029] The end of the heating element 300 furthest from the mounting plate 200 is located inside the mounting housing 100. Inside the mounting housing 100, a protective component 400 is provided to protect each heating element 300 individually. The mounting plate 200 is equipped with a cleaning component 500 to clean dirt from the outside of the heating element 300 and the inside of the protective component 400. The protective component 400 protects the heating element 300, preventing fragments from flying outwards in the event of an explosion. Simultaneously, the cleaning component 500 cleans dirt from the heating element 300 and the protective component 400, preventing any impact on the heating effect of the heating element 300.

[0030] The protective assembly 400 includes a support flange 410 fixed to the inner side of the mounting housing 100, wherein the support flange 410 is bolted to the inner side of the mounting housing 100. Multiple connecting holes 411 are spaced apart along the circumference of the support flange 410, through which the heating element 300 passes. A protective tube 420 is fixedly installed on the lower side of the support flange 410 and through the connecting holes 411, and the protective tube 420 is sleeved on the outer side of the heating element 300. The support flange 410 reinforces the protective tube 420 and shields the inner heating element 300, achieving an explosion-proof effect.

[0031] Furthermore, a step 421 is formed at one end of the protective pipe 420 near the support flange 410, and a threaded pipe 422 is integrally formed on the upper side of the step 421. The threaded pipe 422 passes through the connecting hole 411, and a connecting nut 423 is threadedly connected to the outer side of the pipe section of the threaded pipe 422 passing through the connecting hole 411.

[0032] A guide groove 424 is provided on one side of the protective tube 420 near the center of the mounting housing 100. The guide groove 424 is vertically set, and the cleaning component 500 passes through the guide groove 424 to clean the dirt on the inside of the protective tube 420.

[0033] The cleaning assembly 500 includes a drive shaft 510, one end of which passes through the mounting plate 200, is located outside the mounting housing 100, and is connected to a drive motor 520. The drive motor 520 drives the drive shaft 510 to rotate, and the shaft section of the drive shaft 510 located inside the mounting housing 100 is threaded to form a threaded rod section 511.

[0034] A mounting sleeve 530 is threaded onto the threaded rod segment 511. A support rod 540 is fixed circumferentially to the outer side of the mounting sleeve 530. The end of the support rod 540 away from the mounting sleeve 530 passes through the guide groove 424 and is connected to a scraper ring 550. The outer wall of the scraper ring 550 abuts against the protective tube 420. The heating element 300 passes through the center of the scraper ring 550. The inner diameter of the scraper ring 550 is larger than the outer diameter of the heating element 300. In use, when the drive motor 520 drives the drive shaft 510 to rotate, the mounting sleeve 530 can move along the length of the threaded rod segment 511 because the multiple support rods 540 are limited by the guide groove 424. During the movement, the scraper ring 550 moves vertically, scraping away dirt inside the mounting sleeve 530.

[0035] The dirt can be discharged through the guide groove. Furthermore, a slag discharge hole is provided on the scraper ring, so that the dirt can also be discharged through the slag discharge hole during the scraping process.

[0036] A drain pipe 130 is provided at the bottom of the mounting housing 100, and a control valve 131 is provided on the drain pipe 130.

[0037] The scraper ring 550 has an annular mounting groove 551 on its inner side, and a rubber ring 552 is embedded in the mounting groove 551. The inner ring of the rubber ring 552 abuts against the heating element 300. The heating element 300 is scraped off through the inner side of the rubber ring.

[0038] An annular sealing groove 512 is provided on the shaft section of the drive shaft 510 located inside the mounting plate 200. Two sealing grooves 512 are arranged at intervals along the vertical direction, and a sealing ring 513 is provided in the sealing groove 512. The drive shaft 510 is sealed to the mounting plate 200 through the sealing ring 513, and can rotate relative to the mounting plate 200.

[0039] A support ring 560 is fixed on the drive shaft 510. The support ring 560 is located between the support flange 410 and the mounting plate 200, and the support ring 560 abuts against the side of the support flange 410 closest to the mounting plate 200. The support ring 560 provides support for the drive shaft 510.

[0040] A shielding assembly 600 is provided on the outer side of the protective tube 420 to shield the guide groove 424. The shielding assembly 600 includes a limiting ring 610 fixed to the side wall of the protective tube 420, and the limiting ring 610 is located at the end of the protective tube 420 away from the mounting plate 200.

[0041] The outer side of the protective tube 420 is fitted with a first shielding ring 620, a second shielding ring 630 and a third shielding ring 640.

[0042] The first blocking ring 620 is sleeved on the outside of the limiting ring 610. A first inner abutting ring 621 is provided on the inner side of the first blocking ring 620 and at the end away from the supporting flange 410. The first inner abutting ring 621 is located on the side of the limiting ring 610 away from the supporting flange 410. A first outer abutting ring 622 is provided on the outer side of the first blocking ring 620 and at the end away from the first inner abutting ring 621. The inner diameter of the first inner abutting ring 621 is smaller than the outer diameter of the limiting ring 610.

[0043] The second shielding ring 630 is sleeved on the outside of the first shielding ring 620. A second inner abutment ring 631 is provided on the inner side of the second shielding ring 630, and a second outer abutment ring 632 is provided on the outer side of the second shielding ring 630. The second inner abutment ring 631 is located at the end of the second shielding ring 630 away from the supporting flange 410, and is located on the side of the first outer abutment ring 622 away from the supporting flange 410. The inner diameter of the second inner abutment ring 631 is smaller than the outer diameter of the first outer abutment ring 622. The second outer abutment ring 632 is located at the end of the second shielding ring 630 closer to the supporting flange 410.

[0044] The third shielding ring 640 is sleeved on the outside of the second shielding ring 630. A third inner abutting ring 641 is provided on the inner side of the third shielding ring 640. The third inner abutting ring 641 is located at the end of the third shielding ring 640 away from the supporting flange 410 and on the side of the second outer abutting ring 632 away from the supporting flange 410. The inner diameter of the third inner abutting ring 641 is smaller than the outer diameter of the second outer abutting ring 632.

[0045] The end of the third shielding ring 640 away from the third inner abutment ring 641 is fixed to the upper side of the support rod 540; a limiting plate 650 is provided on the outer side of the end of the protective tube 420 away from the support flange 410, and the outer diameter of the limiting plate 650 is larger than the outer diameter of the third shielding ring 640. The first shielding ring 620, the second shielding ring 630, and the third shielding ring 640 can all slide vertically. When the mounting sleeve 530 moves the support rod 540 vertically, the support rod 540 moves the third shielding ring 640, and the second and first shielding rings move in tandem. When moving downwards, the third shielding ring 640, the second shielding ring 630, and the first shielding ring 620 move downwards in sequence. At this time, the inner scraper ring 550 can scrape away dirt from inside the protective tube 420. When the support rod 540 moves upward, the first shielding ring 620, the second shielding ring 630, and the third shielding ring 640 move upward, shielding the guide groove 424 and achieving an explosion-proof effect.

[0046] During the scraping process, the dirt is discharged from the lower end of the protective tube 420. During normal operation, the support rod 540 is located at the top of the protective tube 420.

[0047] This invention provides a high-temperature explosion-proof electric heater. Protective and shielding components located inside the mounting housing can isolate the heating element, achieving an explosion-proof effect and thus improving the safety of the electric heater. Simultaneously, during use, a cleaning component can clean dirt from the inside of the protective components and the outside of the heating element, preventing any impact on the heating performance.

[0048] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Without conflict, the embodiments and features in the embodiments of this invention can be combined with each other.

[0050] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A high-temperature explosion-proof electric heater, characterized in that: The device includes a mounting housing (100), a mounting plate (200) at one end of the mounting housing (100), and a plurality of heating tubes (300) are spaced apart on the mounting plate (200); a fluid inlet (110) is provided on the lower side wall of the mounting housing (100), and a fluid outlet (120) is provided on the upper side wall of the mounting housing (100). The end of the heating element (300) away from the mounting plate (200) is located inside the mounting housing (100); a protective component (400) is provided inside the mounting housing (100) to protect each heating element (300); and a cleaning component (500) is provided on the mounting plate (200) to clean dirt from the outside of the heating element (300) and the inside of the protective component (400). The protective assembly (400) includes a support flange (410) fixed to the inside of the mounting housing (100), and a plurality of connecting holes (411) are spaced apart along the circumferential direction on the support flange (410), through which the electric heating tube (300) passes. A protective tube (420) is fixedly installed on the lower side of the supporting flange (410) and through the connecting hole (411), and the protective tube (420) is sleeved on the outside of the electric heating tube (300); The protective tube (420) has a guide groove (424) on one side near the center of the mounting housing (100). The guide groove (424) is vertically arranged. The cleaning component (500) passes through the guide groove (424) to clean the dirt inside the protective tube (420). The cleaning assembly (500) includes a drive shaft (510), one end of which passes through the mounting plate (200), is located outside the mounting housing (100), and is connected to a drive motor (520). The drive motor (520) drives the drive shaft (510) to rotate. The shaft section of the drive shaft (510) located in the mounting housing (100) is threaded with external threads to form a threaded rod section (511). A mounting sleeve (530) is threaded onto the threaded rod section (511). A support rod (540) is fixed to the outer side of the mounting sleeve (530) along the circumferential direction. The end of the support rod (540) away from the mounting sleeve (530) passes through the guide groove (424) and is connected to a scraper ring (550). The outer wall of the scraper ring (550) abuts against the protective tube (420). The electric heating tube (300) passes through the center of the scraper ring (550). The inner diameter of the scraper ring (550) is larger than the outer diameter of the electric heating tube (300). The outer side of the protective tube (420) is provided with a shielding component (600) to shield the guide groove (424). The shielding assembly (600) includes a limiting ring (610) fixed to the side wall of the protective tube (420), the limiting ring (610) being located at the end of the protective tube (420) away from the mounting plate (200); The outer side of the protective tube (420) is fitted with a first shielding ring (620), a second shielding ring (630) and a third shielding ring (640). The first shielding ring (620) is sleeved on the outside of the limiting ring (610). A first inner abutment ring (621) is provided on the inner side of the first shielding ring (620) and at the end away from the supporting flange (410). The first inner abutment ring (621) is located on the side of the limiting ring (610) away from the supporting flange (410). A first outer abutment ring (622) is provided on the outer side of the first shielding ring (620) and at the end away from the first inner abutment ring (621). The inner diameter of the first inner abutment ring (621) is smaller than the outer diameter of the limiting ring (610). The second shielding ring (630) is sleeved on the outside of the first shielding ring (620). The inner side of the second shielding ring (630) is provided with a second inner abutting ring (631), and the outer side of the second shielding ring (630) is provided with a second outer abutting ring (632). The second inner abutment ring (631) is located at the end of the second shielding ring (630) away from the support flange (410) and on the side of the first outer abutment ring (622) away from the support flange (410). The inner diameter of the second inner abutment ring (631) is smaller than the outer diameter of the first outer abutment ring (622). The second outer abutment ring (632) is located at one end of the second shielding ring (630) near the support flange (410); The third shielding ring (640) is sleeved on the outside of the second shielding ring (630). A third inner abutment ring (641) is provided on the inner side of the third shielding ring (640). The third inner abutment ring (641) is located at the end of the third shielding ring (640) away from the support flange (410) and on the side of the second outer abutment ring (632) away from the support flange (410). The inner diameter of the third inner abutment ring (641) is smaller than the outer diameter of the second outer abutment ring (632). The end of the third shielding ring (640) away from the third inner abutment ring (641) is fixed to the upper side of the support rod (540); A limiting plate (650) is provided on the outer side of the end of the protective tube (420) away from the supporting flange (410), and the outer diameter of the limiting plate (650) is larger than the outer diameter of the third shielding ring (640).

2. The high-temperature explosion-proof electric heater according to claim 1, characterized in that: The inner side of the scraper ring (550) is provided with an annular mounting groove (551), and a rubber ring (552) is embedded in the mounting groove (551). The inner ring of the rubber ring (552) abuts against the heating tube (300).

3. A high-temperature explosion-proof electric heater according to claim 1, characterized in that: The protective tube (420) has a step (421) formed at one end near the supporting flange (410). A threaded tube (422) is integrally formed on the upper side of the step (421). The threaded tube (422) passes through the connecting hole (411), and a connecting nut (423) is threaded to the outside of the tube section of the threaded tube (422) that passes through the connecting hole (411).

4. A high-temperature explosion-proof electric heater according to claim 1, characterized in that: An annular sealing groove (512) is provided on the shaft segment located inside the mounting plate (200) on the drive shaft (510). Two sealing grooves (512) are arranged at intervals along the vertical direction, and a sealing ring (513) is provided in the sealing groove (512).

5. A high-temperature explosion-proof electric heater according to claim 1, characterized in that: A support ring (560) is fixed on the drive shaft (510). The support ring (560) is located between the support flange (410) and the mounting plate (200), and the support ring (560) abuts against the side of the support flange (410) near the mounting plate (200).

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