An explosion-proof electric heater

Abstract

The present application relates to the technical fields of electric heater, and specifically discloses an explosion-proof electric heater, which comprises an explosion-proof electric heater body, and a cleaning mechanism arranged in the explosion-proof electric heater body; the cleaning mechanism comprises a moving scraper and a plurality of groups of cleaning brush heads; the explosion-proof electric heater body is further provided with a driving mechanism; the plurality of groups of cleaning brush heads can preliminarily clean the dirt on the inner wall of the bottom end of the explosion-proof electric heater body; the moving scraper can further clean the dirt on the inner wall of the bottom end of the explosion-proof electric heater body, and push the scraped dirt to the inside of the dirt collecting box at the bottom end of the explosion-proof electric heater body; when the moving scraper moves, the driving wheel can also roll along the inner wall of the explosion-proof electric heater body, so that the cleaning brush head rotates and cleans the dirt accumulated on the inner wall of the bottom end of the explosion-proof electric heater body, thereby reducing the workload of personnel and improving the cleaning efficiency.

Description

An explosion-proof electric heater Technical Field

[0001] This invention belongs to the field of electric heater technology, and specifically relates to an explosion-proof electric heater. Background Technology

[0002] Explosion-proof electric heaters are devices that convert electricity into heat energy for use in explosion-proof environments. When the heating medium passes through the heating chamber of the electric heater under pressure, the enormous heat generated by the heating element is uniformly carried away using the principle of fluid thermodynamics, ensuring that the temperature of the heated medium meets the user's process requirements. This provides thermal insulation and energy saving. During heating, the calcium ash typically settles to the bottom of the heater. Over time, the accumulation of calcium ash and other dirt affects the temperature uniformity of the heater tube wall, hindering its use. Traditional cleaning methods often involve disassembling the machine and manually cleaning the calcium ash and other dirt from the bottom. This cleaning work is time-consuming, labor-intensive, cumbersome, and inefficient, making it inconvenient to use. Summary of the Invention

[0003] The purpose of this invention is to provide an explosion-proof electric heater to solve the problems mentioned in the background art.

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

[0005] An explosion-proof electric heater, comprising:

[0006] The explosion-proof electric heater body has a cleaning mechanism inside, which is located at the bottom of the interior of the explosion-proof electric heater body and can clean the dirt at the bottom of the interior.

[0007] The cleaning mechanism includes a movable scraper and several sets of cleaning brush heads. Both the movable scraper and the several sets of cleaning brush heads are in contact with the inner wall of the explosion-proof electric heater body. The several sets of cleaning brush heads can perform preliminary cleaning of the dirt on the inner wall at the bottom of the explosion-proof electric heater body, and the movable scraper can perform secondary cleaning of the dirt on the inner wall at the bottom of the explosion-proof electric heater body, and push the scraped dirt to the end of the explosion-proof electric heater body with the dirt collection box, thereby improving the cleaning efficiency.

[0008] The explosion-proof electric heater body is also equipped with a drive mechanism that can drive the moving scraper to move, which is beneficial for the moving scraper to move and scrape off dirt. In use, the drive mechanism drives the moving scraper to move at the bottom of the explosion-proof electric heater body, thereby scraping off the dirt on the inner wall of the bottom of the explosion-proof electric heater body, avoiding the accumulation of dirt and affecting the uniformity of temperature in use.

[0009] A dirt collection box is also provided at the bottom of one side of the explosion-proof electric heater body, which can collect the scraped dirt in a centralized manner.

[0010] Preferably, the movable scraper is arc-shaped, which facilitates its contact with the bottom of the inner wall of the explosion-proof electric heater body and helps to scrape off the dirt at the bottom of its inner wall. The inner bottom of the movable scraper is provided with a scraping plate, and the bottom of the scraping plate is provided with a pointed tip, which can scrape off the dirt.

[0011] Preferably, the scraping plate is composed of several sets of scraping blocks. The bottom end of the movable scraper is provided with a through hole that cooperates with the scraping block. A connecting spring is provided inside the through hole. The connecting spring is connected to the corresponding scraping block. By connecting the scraping block with the connecting spring, the elastic force of the connecting spring is used to generate a pushing force on the scraping block, so that the scraping block is always in close contact with the inner wall of the explosion-proof electric heater body, which is conducive to scraping off dirt.

[0012] Preferably, a plurality of cleaning brush heads are mounted on one side of the movable scraper via a plurality of mounting components. Each set of cleaning brush heads is in contact with the inner wall of the bottom end of the explosion-proof electric heater body. This facilitates the movement of the cleaning brush heads while the movable scraper moves, allowing for preliminary cleaning of the inner wall dirt. The cleaning brush heads are made of high-temperature and corrosion-resistant materials. The mounting components include a connecting rod, a connecting sleeve, and a mounting rod. A plurality of connecting rods are connected to one side of the movable scraper. One end of each connecting rod is connected to the connecting sleeve. The cleaning brush head is mounted on one end of the mounting rod. The connecting sleeve has mounting holes that mate with the mounting rod. The mounting components allow for the installation of the cleaning brush heads and also ensure that the cleaning brush heads face the inner wall of the bottom end of the explosion-proof electric heater body.

[0013] Preferably, one side of the movable scraper is also provided with several sets of drive components, which can drive the cleaning brush head to rotate, thereby improving cleaning efficiency;

[0014] The drive assembly includes a connecting plate, a second mounting rod, a drive wheel, a drive rod, a first drive bevel gear, and a second drive bevel gear. Several sets of connecting plates are connected to one side of the movable scraper. The drive wheel is mounted on one side of the connecting plate via the second mounting rod. The drive wheel is rotatably connected to the second mounting rod. The outer ends of the drive wheels are all in contact with the inner wall of the explosion-proof electric heater body, facilitating the rolling of the drive wheel along the inner wall of the explosion-proof electric heater body. The upper end of the drive wheel is connected to the drive rod, and the first drive bevel gear is mounted on the upper end of the drive rod. The other end of the first mounting rod is equipped with the second drive bevel gear. The second moving bevel gear meshes with the first driving bevel gear. In use, the moving scraper moves along the bottom of the inner wall of the explosion-proof electric heater body through the drive mechanism. At the same time, the moving scraper also pushes several sets of drive wheels on one side to roll along the bottom of the inner wall of the explosion-proof electric heater body. The drive wheels drive the first driving bevel gear to rotate through the drive rod. The first driving bevel gear meshes with the second driving bevel gear and rotates, so that the second driving bevel gear drives the cleaning brush head to rotate through the mounting rod. This causes the cleaning brush head to rotate and clean the dirt accumulated at the bottom of the inner wall of the explosion-proof electric heater body, which improves cleaning efficiency.

[0015] The side of the drive wheel is designed as an arc surface, which facilitates its fit with the inner wall of the explosion-proof electric heater body and allows the drive wheel to roll along the inner wall of the explosion-proof electric heater body.

[0016] Preferably, the diameter of the first driving bevel gear is larger than the diameter of the second driving bevel gear. This results in the second driving bevel gear rotating faster than the first driving bevel gear when they are engaged in transmission, thus allowing the cleaning brush head to rotate faster. This improves cleaning efficiency and facilitates the initial cleaning of dirt on the bottom of the inner wall of the explosion-proof electric heater body.

[0017] Preferably, the driving mechanism includes a driving motor and a driving screw. The driving motor is installed on one side of the explosion-proof electric heater body, the output end of the driving motor is connected to the driving screw, and one end of the driving screw extends to the explosion-proof electric heater body and passes through the movable scraper.

[0018] The upper end of the movable scraper is provided with a screw sleeve, which is threadedly engaged with the drive screw to rotate. The drive motor drives the drive screw to rotate, and the drive screw is threadedly engaged with the screw sleeve, thereby driving the movable scraper to move at the bottom of the inner wall of the explosion-proof electric heater body and scrape off the dirt, thus achieving the function of cleaning dirt.

[0019] Preferably, the explosion-proof electric heater body has two sets of limiting rods connected inside. The movable scraper has through holes that cooperate with the limiting rods. The limiting rods limit the movable scraper, so that when the drive screw rotates, it can drive the movable scraper to move horizontally, which is convenient for scraping the dirt on the bottom of the inner wall of the explosion-proof electric heater body.

[0020] Preferably, a drain outlet is provided at the bottom of one side of the explosion-proof electric heater body located at the upper end of the sludge collection tank. A baffle is provided at the bottom of the interior of the explosion-proof electric heater body located above the drain outlet. A sealing gasket is provided at the bottom of the baffle. The sealing gasket is made of high-temperature and corrosion-resistant material. The baffle is L-shaped. A limit slider is connected to the bottom of the baffle. A groove is provided inside the explosion-proof electric heater body to cooperate with the limit slider.

[0021] A push rod is connected to one bottom end of the movable scraper, and a push groove that cooperates with the push rod is opened on one side of the baffle. In use, the drive mechanism drives the movable scraper to move at the bottom end of the inner wall of the explosion-proof electric heater body. The rotating cleaning brush head can perform preliminary cleaning of the dirt on the inner wall of the explosion-proof electric heater body. The movable scraper can scrape off the dirt on the inner wall of the explosion-proof electric heater body to achieve secondary cleaning, which helps to improve cleaning efficiency. After scraping off the dirt on the inner wall, the movable scraper can also push it, so that the scraped dirt moves to the end of the explosion-proof electric heater body near the collection tank. When the movable scraper moves to the end of the explosion-proof electric heater body, the push rod on one side also pushes the baffle to move, so that the drain port can be opened, which helps the scraped dirt to fall into the inside of the collection tank and be collected. A door is provided on one side of the collection tank, and opening the door facilitates the centralized treatment of the collected dirt.

[0022] Preferably, a return spring is connected to one side of the baffle, and a return block is connected to one end of the return spring. The return block is located on one side of the inner wall of the explosion-proof electric heater body. When the push rod pushes the baffle to move, the baffle also squeezes the return spring, putting it in a compressed state. When the push rod is reset, the return spring and return block help to drive the baffle to reset and re-block the drain outlet.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] This invention utilizes several sets of cleaning brush heads to perform initial cleaning of the dirt on the inner wall of the bottom of the explosion-proof electric heater body. A movable scraper further cleans the dirt on the inner wall of the bottom of the explosion-proof electric heater body, pushing the scraped dirt into the collection tank at the bottom of the heater body, thus improving cleaning efficiency. The moving scraper also drives a drive wheel to roll along the inner wall of the explosion-proof electric heater body. The rotation of the drive wheel further rotates the cleaning brush heads, causing them to sweep away the accumulated dirt on the bottom of the inner wall of the explosion-proof electric heater body. This improves cleaning efficiency and allows for the centralized collection of the cleaned dirt, facilitating the cleaning of the inner wall of the explosion-proof electric heater body, reducing workload and increasing cleaning efficiency. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a schematic diagram of the internal structure of the present invention;

[0027] Figure 3 is a partially enlarged schematic diagram of the cleaning mechanism of the present invention;

[0028] Figure 4 is a schematic diagram of the internal structure of the movable scraper of the present invention;

[0029] Figure 5 is an enlarged schematic diagram of the movable scraper of the present invention;

[0030] Figure 6 is a partially enlarged schematic diagram of the present invention;

[0031] Figure 7 is a partial cross-sectional view of the present invention;

[0032] In the diagram: 10. Explosion-proof electric heater body; 101. Drain outlet;

[0033] 20. Cleaning mechanism; 21. Drive motor; 22. Drive screw; 221. Screw sleeve; 23. Moving scraper; 231. Scraper block; 232. Connecting spring;

[0034] 24. Drive assembly; 241. Connecting plate; 242. Mounting rod two; 243. Drive wheel; 244. Drive rod; 245. Drive bevel gear one; 246. Drive bevel gear two; 25. Cleaning brush head; 251. Connecting rod; 252. Connecting sleeve; 253. Mounting rod one; 26. Limiting rod;

[0035] 30. Sewage collection box; 31. Baffle; 311. Limiting slider; 32. Return spring; 33. Return block; 34. Push rod. Detailed Implementation

[0036] 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.

[0037] Example:

[0038] Please refer to Figures 1-7. An explosion-proof electric heater includes:

[0039] The explosion-proof electric heater body 10 has a cleaning mechanism 20 inside. The cleaning mechanism 20 is located at the bottom of the interior of the explosion-proof electric heater body 10 and can clean the dirt at the bottom of the interior.

[0040] The cleaning mechanism 20 includes a movable scraper 23 and several sets of cleaning brush heads 25. The movable scraper 23 and several sets of cleaning brush heads 25 are in contact with the inner wall of the explosion-proof electric heater body 10. The several sets of cleaning brush heads 25 can perform preliminary cleaning of the dirt on the bottom inner wall of the explosion-proof electric heater body 10. The movable scraper 23 can perform secondary cleaning of the dirt on the bottom inner wall of the explosion-proof electric heater body 10 and push the scraped dirt to the end of the explosion-proof electric heater body 10 with the dirt collection box 30, thereby improving the cleaning efficiency.

[0041] The explosion-proof electric heater body 10 is also equipped with a drive mechanism that can drive the moving scraper 23 to move, which is beneficial for the moving scraper 23 to move and scrape off dirt. In use, the drive mechanism drives the moving scraper 23 to move at the bottom of the explosion-proof electric heater body 10, thereby scraping off the dirt on the inner wall of the bottom of the explosion-proof electric heater body 10, avoiding the accumulation of dirt and affecting the uniformity of temperature in use.

[0042] A dirt collection box 30 is also provided at the bottom of one side of the explosion-proof electric heater body 10, which can collect the scraped dirt in a concentrated manner.

[0043] Referring to Figures 1-7, the movable scraper 23 is designed in an arc shape, which facilitates its contact with the bottom of the inner wall of the explosion-proof electric heater body 10, and is conducive to scraping off the dirt at the bottom of its inner wall. Moreover, the movable scraper 23 is located at the bottom of the inner wall of the explosion-proof electric heater body 10 without occupying space and without affecting the operation of its internal heating element. The bottom of the movable scraper 23 is provided with a scraping plate, and the bottom of the scraping plate is provided with a pointed tip, which can scrape off the dirt and improve the scraping efficiency.

[0044] Referring to Figures 1-7, the scraping plate is composed of several sets of scraping blocks 231. The bottom end of the movable scraper 23 has a through hole that cooperates with the scraping block 231. A connecting spring 232 is installed inside the through hole. The connecting spring 232 is connected to the corresponding scraping block 231. Through the connection between the connecting spring 232 and the scraping block 231, the elastic force of the connecting spring 232 is used to generate a pushing force on the scraping block 231, so that the scraping block 231 is always in close contact with the inner wall of the explosion-proof electric heater body 10, which is conducive to scraping off dirt.

[0045] Referring to Figures 1-7, several sets of cleaning brush heads 25 are mounted on one side of the movable scraper 23 via several sets of mounting components. All sets of cleaning brush heads 25 are in contact with the inner wall of the bottom end of the explosion-proof electric heater body 10. This facilitates the movement of the movable scraper 23 while simultaneously pushing the cleaning brush heads 25 to perform preliminary cleaning of the inner wall dirt. The cleaning brush heads 25 are made of high-temperature and corrosion-resistant materials. The mounting components include connecting rods 251, connecting sleeves 252, and mounting rod 253. Several sets of connecting rods 251 are connected to one side of the movable scraper 23. One end of each connecting rod 251 is connected to a connecting sleeve 252. The cleaning brush head 25 is mounted on one end of the mounting rod 253. The connecting sleeve 252 has mounting holes that mate with the mounting rod 253. The mounting components allow the cleaning brush heads 25 to be installed and also facilitate the cleaning brush heads 25 facing the inner wall of the bottom end of the explosion-proof electric heater body 10.

[0046] Referring to Figures 1-7, a number of drive components 24 are also provided on one side of the movable scraper 23, which can drive the cleaning brush head 25 to rotate, which helps to improve cleaning efficiency.

[0047] It should be noted that only one set of cleaning brush heads 25 and drive components 24 are shown in Figure 3. Other parts have been omitted for easier viewing and understanding.

[0048] The drive assembly 24 includes a connecting plate 241, a second mounting rod 242, a drive wheel 243, a drive rod 244, a first drive bevel gear 245, and a second drive bevel gear 246. Several sets of connecting plates 241 are also connected to one side of the movable scraper 23. A drive wheel 243 is mounted on one side of the connecting plate 241 via the second mounting rod 242. The drive wheel 243 is rotatably connected to the second mounting rod 242. The outer ends of the drive wheels 243 are all in contact with the inner wall of the explosion-proof electric heater body 10, which facilitates the rolling of the drive wheels 243 along the inner wall of the explosion-proof electric heater body 10. A drive rod 244 is connected to the upper end of the drive wheel 243. A first drive bevel gear 245 is mounted on the upper end of the drive rod 244. A second drive bevel gear 246 is mounted on the other end of the first mounting rod 243. 246. Drive bevel gear 1 245 meshes with drive bevel gear 246. In use, the drive mechanism drives the moving scraper 23 to move along the bottom of the inner wall of the explosion-proof electric heater body 10. At the same time, the moving scraper 23 also pushes several sets of drive wheels 243 on one side to roll along the bottom of the inner wall of the explosion-proof electric heater body 10. The drive wheels 243 drive the drive bevel gear 1 245 to rotate through the drive rod 244. The drive bevel gear 1 245 meshes with drive bevel gear 246 and rotates, so that drive bevel gear 246 drives the cleaning brush head 25 to rotate through the mounting rod 253. This causes the cleaning brush head 25 to rotate and clean the dirt accumulated at the bottom of the inner wall of the explosion-proof electric heater body 10, which improves cleaning efficiency.

[0049] The side of the drive wheel 243 is set as an arc surface, which makes it easy to fit against the inner wall of the explosion-proof electric heater body 10 and make it easy for the drive wheel 243 to roll along the inner wall of the explosion-proof electric heater body 10. The outer side of the drive wheel 243 is provided with multiple sets of anti-slip protrusions, which increases the friction and thus facilitates the drive wheel 243 to roll along the inner wall of the explosion-proof electric heater body 10.

[0050] Referring to Figures 1-7, the diameter of the first drive bevel gear 245 is larger than the diameter of the second drive bevel gear 246. As a result, when the first drive bevel gear 245 and the second drive bevel gear 246 are in transmission engagement, the rotational speed of the second drive bevel gear 246 is greater than that of the first drive bevel gear 245. This results in the second drive bevel gear 246 rotating at a faster speed, which in turn allows the cleaning brush head 25 to rotate faster, thus improving cleaning efficiency and facilitating the initial cleaning of dirt on the bottom of the inner wall of the explosion-proof electric heater body 10.

[0051] Referring to Figures 1-7, the drive mechanism includes a drive motor 21 and a drive screw 22. The drive motor 21 is installed on one side of the explosion-proof electric heater body 10. The output end of the drive motor 21 is connected to the drive screw 22. One end of the drive screw 22 extends to the explosion-proof electric heater body 10 and passes through the movable scraper 23.

[0052] The upper end of the movable scraper 23 is provided with a screw sleeve 221. The screw sleeve 221 is threadedly engaged with the drive screw 22 and rotates. The drive motor 21 drives the drive screw 22 to rotate. The drive screw 22 is threadedly engaged with the screw sleeve 221, which in turn drives the movable scraper 23 to move at the bottom of the inner wall of the explosion-proof electric heater body 10 and scrape off the dirt, thereby achieving the function of cleaning dirt.

[0053] Referring to Figures 1-7, the explosion-proof electric heater body 10 has two sets of limiting rods 26 connected inside. The movable scraper 23 has through holes that cooperate with the limiting rods 26. The limiting rods 26 limit the movable scraper 23, so that when the drive screw 22 rotates, it can drive the movable scraper 23 to move horizontally, which is convenient for scraping the dirt on the bottom of the inner wall of the explosion-proof electric heater body 10.

[0054] Referring to Figures 1-7, a drain port 101 is provided at the bottom of one side of the explosion-proof electric heater body 10 located at the upper end of the sludge collection tank 30. A baffle 31 is provided at the bottom of the interior of the explosion-proof electric heater body 10 located at the upper end of the drain port 101. A sealing gasket is provided at the bottom of the baffle 31. The sealing gasket is made of high temperature and corrosion resistant material. The baffle 31 is L-shaped. A limit slider 311 is connected to the bottom of the baffle 31. A sliding groove that cooperates with the limit slider 311 is provided inside the explosion-proof electric heater body 10.

[0055] A push rod 34 is connected to one bottom end of the movable scraper 23, and a push groove that cooperates with the push rod 34 is provided on one side of the baffle 31. In use, the drive mechanism drives the movable scraper 23 to move at the bottom end of the inner wall of the explosion-proof electric heater body 10. The cleaning brush head 25 rotates to perform preliminary cleaning of the dirt on the inner wall of the explosion-proof electric heater body 10, and the movable scraper 23 can scrape off the dirt on the inner wall of the explosion-proof electric heater body 10 to achieve secondary cleaning, which helps to improve cleaning efficiency. The movable scraper 23 can also scrape away the dirt on the inner wall of the explosion-proof electric heater body 10. After the wall dirt is scraped off, it can also be pushed to move the scraped dirt to one end of the explosion-proof electric heater body 10 near the dirt collection tank 30. When the moving scraper 23 moves to one end of the explosion-proof electric heater body 10, the push rod 34 on one side also pushes the baffle 31 to move, so that the drain port 101 can be opened, which is conducive to the scraped dirt falling into the inside of the dirt collection tank 30 through the drain port 101 and being collected. A door is provided on one side of the dirt collection tank 30, and opening the door makes it easy to centrally process the collected dirt.

[0056] Referring to Figures 1-7, a reset spring 32 is connected to one side of the baffle 31, and a reset block 33 is connected to one end of the reset spring 32. The reset block 33 is located on one side of the inner wall of the explosion-proof electric heater body 10. When the push rod 34 pushes the baffle 31 to move, the baffle 31 also squeezes the reset spring 32, putting it in a compressed state. When the push rod 34 is reset, the reset spring 32 and the reset block 33 help to drive the baffle 31 to reset and re-block the drain outlet 101.

[0057] This invention utilizes a set of cleaning brush heads 25 to perform preliminary cleaning of the dirt on the inner wall of the bottom of the explosion-proof electric heater body 10. Combined with a movable scraper 23, it performs secondary cleaning of the dirt on the inner wall of the bottom of the explosion-proof electric heater body 10, and pushes the scraped dirt into the dirt collection box 30 at the bottom of the explosion-proof electric heater body 10, thereby improving cleaning efficiency. Furthermore, as the movable scraper 23 moves, it also drives the drive wheel 243 to roll along the inner wall of the explosion-proof electric heater body 10. The rotation of the drive wheel 243 further drives the cleaning brush heads 25 to rotate, thus cleaning the dirt accumulated on the bottom of the inner wall of the explosion-proof electric heater body 10. This improves cleaning efficiency and allows for the centralized collection of the cleaned dirt, facilitating the cleaning of the inner wall of the explosion-proof electric heater body, reducing the workload of personnel, and increasing cleaning efficiency.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof electric heater, characterized in that, include: An explosion-proof electric heater body (10) is provided with a cleaning mechanism (20) inside the explosion-proof electric heater body (10). The cleaning mechanism (20) is located at the bottom of the interior of the explosion-proof electric heater body (10). The cleaning mechanism (20) includes a movable scraper (23) and several sets of cleaning brush heads (25). The movable scraper (23) and several sets of cleaning brush heads (25) are all in contact with the inner wall of the explosion-proof electric heater body (10). The explosion-proof electric heater body (10) also has A drive mechanism is provided to move the movable scraper (23); a sludge collection box (30) is also provided at the bottom of one side of the explosion-proof electric heater body (10); the movable scraper (23) is arc-shaped, and a scraping plate is provided at the bottom of the inner part of the movable scraper (23), and the bottom of the scraping plate is provided with a pointed tip; the scraping plate is composed of several sets of scraping blocks (231), and a through hole is opened inside the bottom of the movable scraper (23) to cooperate with the scraping block (231), and the inside of the through hole... A connecting spring (232) is provided, which is connected to the corresponding scraper block (231); a number of cleaning brush heads (25) are installed on one side of the movable scraper (23) through a number of mounting components, and the cleaning brush heads (25) are all in contact with the bottom inner wall of the explosion-proof electric heater body (10). The cleaning brush heads (25) are made of high temperature and corrosion resistant materials. The mounting components include a connecting rod (251), a connecting sleeve (252), and a mounting rod one (251). 53) A plurality of connecting rods (251) are connected to one side of the movable scraper (23), and a connecting sleeve (252) is connected to one end of the connecting rod (251). The cleaning brush head (25) is installed at one end of the mounting rod (253). The connecting sleeve (252) has an installation hole that matches the mounting rod (253). A plurality of drive components (24) are also provided on one side of the movable scraper (23), which can drive the cleaning brush head (25) to rotate.The drive assembly (24) includes a connecting plate (241), a second mounting rod (242), a drive wheel (243), a drive rod (244), a first drive bevel gear (245), and a second drive bevel gear (246). Several sets of the connecting plates (241) are also connected to one side of the movable scraper (23). The drive wheel (243) is mounted on one side of the connecting plate (241) via the second mounting rod (242). The drive wheel (243) is rotatably connected to the second mounting rod (242). The outer ends of the drive wheels (243) are all connected to the explosion-proof electric heater body (10). The inner wall of the drive wheel (243) fits snugly, which facilitates the rolling of the drive wheel (243) along the inner wall of the explosion-proof electric heater body (10). The upper end of the drive wheel (243) is connected to the drive rod (244), and the upper end of the drive rod (244) is equipped with the first drive bevel gear (245). The other end of the first drive rod (253) is equipped with the second drive bevel gear (246), and the first drive bevel gear (245) and the second drive bevel gear (246) mesh with each other. The side of the drive wheel (243) is set as an arc surface, and multiple sets of anti-slip protrusions are provided on the outer side of the drive wheel (243).

2. The explosion-proof electric heater according to claim 1, characterized in that: The diameter of the first driving bevel gear (245) is larger than the diameter of the second driving bevel gear (246).

3. The explosion-proof electric heater according to claim 1, characterized in that: The driving mechanism includes a drive motor (21) and a drive screw (22). The drive motor (21) is installed on one side of the explosion-proof electric heater body (10). The output end of the drive motor (21) is connected to the drive screw (22). One end of the drive screw (22) extends to the explosion-proof electric heater body (10) and passes through the movable scraper (23). A screw sleeve (221) is provided inside the upper end of the movable scraper (23). The screw sleeve (221) is threadedly engaged with the drive screw (22) for rotation.

4. The explosion-proof electric heater according to claim 3, characterized in that: The explosion-proof electric heater body (10) is internally connected to two sets of limiting rods (26), and the movable scraper (23) is internally provided with through holes that cooperate with the limiting rods (26).

5. The explosion-proof electric heater according to claim 1, characterized in that: A drain port (101) is provided at the bottom of one side of the explosion-proof electric heater body (10) located at the upper end of the sludge collection tank (30). A baffle (31) is provided at the bottom of the interior of the explosion-proof electric heater body (10) located at the upper end of the drain port (101). A sealing gasket is provided at the bottom of the baffle (31). The sealing gasket is made of high temperature and corrosion resistant material. The baffle (31) is L-shaped. A limit slider (311) is connected to the bottom of the baffle (31). A sliding groove that cooperates with the limit slider (311) is provided inside the explosion-proof electric heater body (10). A push rod (34) is connected to the bottom of one side of the movable scraper (23). A push groove that cooperates with the push rod (34) is provided on one side of the baffle (31). A box door is provided on one side of the sludge collection tank (30).

6. The explosion-proof electric heater according to claim 5, characterized in that: A reset spring (32) is connected to one side of the baffle (31), and a reset block (33) is connected to one end of the reset spring (32). The reset block (33) is located on one side of the inner wall of the explosion-proof electric heater body (10).

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