A thermal oil boiler

Abstract

The invention provides a thermal oil boiler, belonging to the technical field of boilers. The thermal oil boiler comprises a furnace body and an oil guide pipe which is located inside the furnace body and is spirally arranged in the up and down directions. The top end of the oil guide pipe is fixedly connected with an oil outlet pipe which runs upward through the furnace body. The invention also comprises a scraping device for scraping impurities outside the oil guide pipe. The scraping device comprises a mounting frame which is rotatably mounted on the oil outlet pipe around the axis of the oil outlet pipe, a scraping mechanism arranged on the mounting frame, and a driving mechanism for driving the mounting frame to rotate. The mounting frame comprises a sleeve which is rotatably sleeved on the oil outlet pipe, a horizontal mounting plate arranged on the sleeve, and a vertical mounting plate arranged on the horizontal mounting plate, so that smoke is prevented from adhering to the outer wall of the oil guide pipe to form waste residue, thereby isolating the oil guide pipe from a heating source and reducing the heat transfer efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of boilers, and in particular relates to a thermal oil boiler. Background Art

[0002] Thermal oil boilers use thermal oil as a heat carrier, and have the advantages of high system heat utilization, high transmission temperature, and convenient operation and maintenance. They are widely used in industrial fields that require high temperatures, such as asphalt, but they consume a lot of heat energy during operation. Thermal oil boilers use coal, oil, and gas as fuel, generate heat energy through combustion, and use hot oil circulation pumps to force the thermal oil to circulate in the liquid phase. In this process, the thermal oil transfers heat energy to the heat-using equipment, and then returns to the heating furnace for reheating, forming a closed circulation system.

[0003] A Chinese patent with the authorization announcement number CN219120777U discloses a thermal oil boiler, including a boiler body, a first smoke exhaust pipe and a burner arranged on both sides of the boiler body, a heat exchanger, a first oil inlet pipe and a first oil outlet pipe connected to the heat exchanger, and a thermal oil pump connected to the first oil inlet pipe; the first oil outlet pipe is connected to the oil inlet of the boiler body. When the boiler body is working, the high-temperature flue gas enters the heat exchanger, and the thermal oil is first sent to the heat exchanger through the first oil inlet pipe for heat exchange and temperature increase; after the thermal oil is heated, it is sent to the boiler body through the first oil outlet pipe, and further heated to the use temperature range in the boiler body. Since the thermal oil is already hot when it is sent to the boiler body, when the thermal oil is heated again to the use temperature range in the boiler body, the fuel consumption of the boiler body can be reduced, so that the energy consumption of the thermal oil boiler is reduced.

[0004] However, after flue gas passes through the oil pipe in the boiler for a long time, due to the high temperature of the heat transfer oil in the oil pipe and the relatively low temperature of the flue gas, the flue gas is easy to condense and adhere to the outer wall of the oil pipe, thereby isolating the oil pipe from the heating source, reducing the heat transfer efficiency, resulting in increased energy consumption of the boiler, and also causing corrosion and wear to the oil pipe components. Summary of the invention

[0005] The purpose of the present invention is to provide a thermal oil boiler, aiming to solve the problem in the prior art that flue gas is easily condensed and adheres to the outer wall of the oil pipe, thereby isolating the oil pipe from the heating source, reducing the heat transfer efficiency, resulting in increased energy consumption of the boiler, and also causing corrosion and wear to the oil pipe components.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a thermal oil boiler comprises a furnace body and an oil guide pipe located inside the furnace body and spirally arranged in the up-down direction, the top end of the oil guide pipe is fixedly connected to an oil outlet pipe that penetrates the furnace body upward, and also comprises a scraping device for scraping impurities outside the oil guide pipe; the scraping device comprises a mounting frame rotatably mounted on the oil outlet pipe around the axis of the oil outlet pipe, a scraping mechanism arranged on the mounting frame, and a driving mechanism for driving the mounting frame to rotate, the mounting frame comprises a sleeve rotatably mounted on the oil outlet pipe, a horizontal mounting plate arranged on the sleeve, and a vertical mounting plate arranged on the horizontal mounting plate; the scraping mechanism comprises a fixing ring mounted on the outside of the oil outlet pipe, a supporting plate fixedly arranged on the fixing ring, the supporting plate is guided up and down and moves along the rotation direction of the mounting frame The scraper mechanism also includes a connecting ring which is coaxial with the fixing ring and rotatably mounted on the fixing ring, a transmission assembly which drives the connecting ring to rotate, and a plurality of scraper assemblies evenly distributed on the connecting ring; the scraper assembly includes a connecting block arranged on the connecting ring, a scraper which contacts the outer wall of the oil guide pipe to scrape off impurities, and an elastic member; the scraper is slidably mounted on the connecting block in a direction away from the oil guide pipe, and the elastic member is arranged between the connecting block and the scraper to apply an elastic force toward the oil guide pipe to the scraper; the transmission assembly includes a rack fixedly mounted on the vertical mounting plate and a transmission gear fixedly mounted on the connecting ring and meshing with the rack, so as to drive the connecting ring to rotate when the scraper mechanism moves up and down.

[0007] By setting up a scraping mechanism, it is possible to perform a spiral sliding along the outer wall of the oil guide pipe, thereby cleaning the waste residue on the outer wall of the oil guide pipe and preventing the waste residue from adhering to the outer wall of the oil guide pipe, thereby isolating the oil guide pipe from the heating source, reducing the heat transfer efficiency, and increasing the energy consumption of the boiler. When scraping, the scraper can contact the outer wall of the oil guide pipe under the action of the elastic member to scrape off impurities on the surface. At the same time, it can retract in time when rotating circumferentially along the oil guide pipe to avoid damage to the outer wall of the oil guide pipe. The connecting ring can rotate by itself when performing a spiral sliding along the outer wall of the oil guide pipe through the cooperation of the rack and the transmission gear, and there is no need to set up a power source.

[0008] There are two horizontal mounting plates symmetrically arranged on both sides of the outer wall of the sleeve, one of the vertical mounting plates is provided with a vertically arranged T-shaped slot, and one end of the support plate is provided with a T-shaped protrusion slidably sleeved in the T-shaped slot of the vertical mounting plate.

[0009] The end of the scraper close to the oil guide pipe is an inclined surface, and the end of the inclined surface away from the connecting block contacts the outer wall of the oil guide pipe. Both sides of the scraper are provided with protrusions, and the elastic member is arranged between the protrusion of the scraper and the connecting block.

[0010] By setting the inclined surface, the contact portion between the scraper and the outer wall of the oil pipe forms a knife edge, thereby ensuring the scraping effect of the scraper.

[0011] The scraping mechanism also includes an annular plate coaxially arranged with the fixed ring and fixed on the fixed ring. The annular plate and the connecting ring are arranged on both sides of the fixed ring. The inner wall of the annular plate contacts the outer wall of the oil guide pipe and is used to clean some impurities remaining on the outer wall of the oil guide pipe after being scraped by the scraper.

[0012] After being scraped away by the scraper, some impurities may remain on the outer wall of the oil guide pipe. By setting up an annular plate, the impurities can be cleaned, thereby ensuring the cleaning effect of the waste residue on the outer wall of the oil guide pipe and preventing the waste residue from adhering to the outer wall of the oil guide pipe, thereby isolating the oil guide pipe from the heating source and reducing the heat transfer efficiency.

[0013] An annular slag collecting plate is fixedly installed on the inner wall of the furnace body, and a conical cylinder is arranged on the inner ring wall of the annular slag collecting plate extending upward, and the outer diameter of the conical cylinder gradually increases from top to bottom. A groove is provided on the bottom wall of one side of the annular slag collecting plate, and a slag discharge pipe with one end penetrating the furnace body and connected to the groove of the annular slag collecting plate is fixedly installed on the outer wall of the furnace body, which is used for discharging the waste slag collected by the annular slag collecting plate to the outside of the furnace body, and a push plate is fixedly connected to the bottom of the vertical mounting plate, which is used for pushing the waste slag collected by the annular slag collecting plate to the groove of the annular slag collecting plate, so that the waste slag falls into the slag discharge pipe.

[0014] The scraped waste slag and impurities can be collected and discharged outside the device, which prevents the waste slag and impurities from falling to the bottom of the furnace body and affecting the heating effect of the furnace body.

[0015] An opening is arranged on one side of the fixing ring close to the vertical mounting plate, and an inclined material guide plate is connected to the bottom of the opening. The material guide plate is inclined from top to bottom and toward the inner wall of the furnace body.

[0016] One side of the connecting block and the scraper extends into the fixed ring. A baffle is slidably sleeved on one end of the connecting block close to the fixed ring. The sliding direction of the baffle is the same as that of the scraper. A connecting groove is provided on the end of the scraper close to the baffle. One end of the baffle extends into the connecting groove and is connected to the scraper with a spring. The baffle discharges the waste slag that falls into the fixed ring onto the annular slag collecting plate through the opening and the guide plate.

[0017] By arranging the annular slag collecting plate and the baffle plate, the waste slag scraped off by the annular plate and the scraper plate can be collected on the annular slag collecting plate.

[0018] The driving mechanism includes a motor and a transmission member. A transmission cavity is provided on the inner top of the furnace body. The motor is fixedly installed on the top of the furnace body. The output shaft of the motor rotates and passes through the top wall of the furnace body and then extends into the transmission cavity. The top end of the sleeve rotates and passes through the inner top wall of the furnace body and then extends into the transmission cavity and is connected with the output shaft of the motor through the transmission member.

[0019] The transmission member is a driving gear and a driven gear meshing with each other. The driving gear is fixedly mounted on the output shaft of the motor, and the driven gear is fixedly mounted on the outer wall of the sleeve.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By setting up a scraping mechanism, it can spirally slide along the outer wall of the oil guide pipe, so as to clean the waste residue on the outer wall of the oil guide pipe and prevent the waste residue from adhering to the outer wall of the oil guide pipe, thereby isolating the oil guide pipe from the heating source, reducing the heat transfer efficiency, and increasing the energy consumption of the boiler. When scraping, the scraper can contact the outer wall of the oil guide pipe under the action of the elastic part to scrape off the impurities on its surface. At the same time, it can retract in time when rotating circumferentially along the oil guide pipe to avoid damage to the outer wall of the oil guide pipe, and also prevent the waste residue from causing corrosion and wear to the oil pipe components. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of the boiler in the present invention;

[0024] Figure 2 It is a schematic diagram of the installation structure of the oil guide pipe in the present invention;

[0025] Figure 3 It is a schematic diagram of the installation structure of the oil guide pipe and the scraping mechanism in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the scraping mechanism in the present invention;

[0027] Figure 5 It is a schematic diagram of the partial explosion structure of the scraping component in the present invention;

[0028] Figure 6 It is a front cross-sectional schematic diagram of the scraping assembly in the present invention;

[0029] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 8 It is a structural schematic diagram of the annular material receiving plate in the present invention;

[0031] Fig. 9 It is a schematic top view of the installation of the scraping component in the present invention.

[0032] In the figure:

[0033] 1. Furnace body; 11. Slag discharge pipe; 12. Transmission chamber; 13. Smoke exhaust pipe; 14. Annular slag collecting plate; 2. Oil guide pipe; 21. Oil outlet pipe; 3. Scraping device; 31. Mounting frame; 311. Casing; 312. Horizontal mounting plate; 313. Vertical mounting plate; 3131. T-type slide; 32. Scraping mechanism; 321. Fixed ring; 322. Support plate; 323. Connecting ring; 324. Scraping assembly; 3241. Connecting block; 3242. Scraper; 3243. Elastic member; 3244. Baffle; 325. Transmission assembly; 3251. Rack; 3252. Transmission gear; 33. Driving mechanism; 34. Annular plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 9 The present invention provides the following technical solutions: a thermal oil boiler, comprising a furnace body 1 and an oil guide pipe 2 located inside the furnace body 1 and spirally arranged in the up and down directions, the top of the oil guide pipe 2 is fixedly connected with an oil outlet pipe 21 that penetrates the furnace body 1 upward, and also comprises a scraping device 3 for scraping impurities on the outside of the oil guide pipe 2 to prevent soot residue from adhering to the outer wall of the oil guide pipe 2 and affecting the thermal conductivity of the oil guide pipe 2, thereby reducing the thermal efficiency of the boiler, and a smoke exhaust pipe 13 is installed on the top of the furnace body 1.

[0036] refer to Figure 2 , Figure 3 and Fig. 9 As shown, the scraping device 3 includes a mounting frame 31 rotatably mounted on the oil outlet pipe 21 around the axis of the oil outlet pipe 21, a scraping mechanism 32 provided on the mounting frame 31, and a driving mechanism 33 driving the mounting frame 31 to rotate. The mounting frame 31 includes a sleeve 311 rotatably mounted on the oil outlet pipe 21, a horizontal mounting plate 312 provided on the sleeve 311, and a vertical mounting plate 313 provided on the horizontal mounting plate 312.

[0037] The scraping mechanism 32 includes a fixed ring 321 sleeved on the outside of the oil outlet pipe 21 and a support plate 322 fixed on the fixed ring 321. The support plate 322 is guided up and down and is slidably assembled on the vertical mounting plate 313 along the rotation direction of the mounting frame 31. The scraping mechanism 32 also includes a connecting ring 323 coaxially arranged with the fixed ring 321 and rotatably mounted on the fixed ring 321, a transmission assembly 325 for driving the connecting ring 323 to rotate, and a plurality of scraping assemblies 324 evenly distributed on the connecting ring 323.

[0038] The scraper assembly 324 includes a connecting block 3241 arranged on the connecting ring 323, a scraper 3242 that contacts the outer wall of the oil guide pipe 2 to scrape off impurities, and an elastic member 3243. The scraper 3242 is slidably assembled on the connecting block 3241 along the direction toward and away from the oil guide pipe 2. The elastic member 3243 is arranged between the connecting block 3241 and the scraper 3242 to apply an elastic force to the scraper 3242 toward the oil guide pipe 2.

[0039] The transmission assembly 325 includes a rack 3251 fixed on the vertical mounting plate 313 and a transmission gear 3252 fixed on the connecting ring 323 and meshing with the rack 3251 to drive the connecting ring 323 to rotate when the scraping mechanism 32 moves up and down.

[0040] There are two horizontal mounting plates 312 which are symmetrically arranged on both sides of the outer wall of the sleeve 311. The vertical mounting plates 313 are located at one end of the horizontal mounting plates 312 away from the sleeve 311. One of the vertical mounting plates 313 is provided with a vertically arranged T-shaped groove 3131, and one end of the support plate 322 is provided with a T-shaped protrusion which is slidably sleeved in the T-shaped groove 3131 on the vertical mounting plate 313.

[0041] In other embodiments, there may be only one transverse mounting plate 312 disposed on the outer wall of the sleeve 311 , and the vertical mounting plate 313 is located at one end of the transverse mounting plate 312 away from the sleeve 311 .

[0042] The end of the scraper 3242 close to the oil guide pipe 2 is an inclined surface, and the end of the inclined surface away from the connecting block 3241 contacts the outer wall of the oil guide pipe 2. Protrusions are provided on both sides of the scraper 3242, and the elastic member 3243 is arranged between the protrusion of the scraper 3242 and the connecting block 3241.

[0043] The driving mechanism 33 is started to drive the sleeve 311 to rotate. At this time, the horizontal mounting plate 312 drives the vertical mounting plate 313 to rotate synchronously with the sleeve 311. Since the support plate 322 is slidably sleeved in the T-shaped groove 3131 on the vertical mounting plate 313 through the T-shaped protrusion provided thereon, as the vertical mounting plate 313 rotates, the vertical mounting plate 313 drives the fixing ring 321, the connecting ring 323 and the transmission gear 3252 to slide along the outer wall of the oil guide pipe 2 through the support plate 322 and start to rise or fall at the same time (as the oil guide pipe 2 rises in a spiral shape). At this time, since the transmission gear 3252 and the rack 3251 are meshed with each other, under the action of the rack 3251, as the transmission gear 3252 descends, the transmission gear 3252 drives the connecting ring 323 to start rotating, so that the scraper 3242 starts to rotate along the outer wall of the oil guide pipe 2 and starts to scrape off the cigarette residue adhered to its outer wall.

[0044] The scraping mechanism 32 also includes an annular plate 34 which is coaxially arranged with the fixing ring 321 and fixed on the side of the fixing ring 321 away from the connecting ring 323. The inner wall of the annular plate 34 contacts the outer wall of the oil guide pipe 2 and is used to clean some impurities remaining on the outer wall of the oil guide pipe 2 after being scraped by the scraper 3242.

[0045] In other facility examples, the annular plate 34 may not be provided.

[0046] refer to Figure 2 and Fig. 9 As shown, an annular slag collecting plate 14 is fixedly installed on the inner wall of the furnace body 1, and a conical cylinder is arranged on the inner ring wall of the annular slag collecting plate 14 extending upward, and the outer diameter of the conical cylinder gradually increases from top to bottom, and is used to collect the waste slag scraped off by the annular plate 34. A groove is provided on the bottom wall of one side of the annular slag collecting plate 14, and a slag discharge pipe 11 is fixedly installed on the outer wall of the furnace body 1. The slag discharge pipe 11 runs through the furnace body 1 and is connected to the groove at the bottom of the annular slag collecting plate 14, and is used to discharge the waste slag collected by the annular slag collecting plate 14 to the outside of the furnace body 1. The bottom of the vertical mounting plate 313 is fixedly connected to a push plate, and the outer wall of the push plate is in contact with the inner wall of the furnace body 1 and the outer wall of the annular slag collecting plate 14, and is used to push the waste slag collected by the annular slag collecting plate 14 to the groove of the annular slag collecting plate 14, so that the waste slag falls into the slag discharge pipe 11.

[0047] refer to Figure 1 and Figure 2 As shown, the driving mechanism 33 includes a motor and a transmission member. A transmission cavity 12 is provided at the inner top of the furnace body 1. The motor is fixedly installed on the top of the furnace body 1. The output shaft of the motor rotates and penetrates the top wall of the furnace body 1 and then extends into the transmission cavity 12. The top end of the sleeve 311 rotates and penetrates the inner top wall of the furnace body 1 and then extends into the transmission cavity 12 and is connected to the output shaft of the motor through the transmission member. The transmission member in this embodiment is a driving gear and a driven gear that mesh with each other. The driving gear is fixedly installed on the output shaft of the motor, and the driven gear is fixedly installed on the outer wall of the sleeve 311. In other embodiments, the transmission member is a synchronous belt.

[0048] refer to Figure 7 and Figure 8 As shown, an opening is provided on one side of the fixing ring 321 close to the vertical mounting plate 313, and the bottom of the opening is connected to a guide plate inclined downward in the direction of the vertical mounting plate 313, which is used for discharging the waste slag on the inner ring wall of the fixing ring 321 to the annular slag collecting plate 14, and a baffle 3244 is slidably sleeved on one end of the connecting block 3241 close to the fixing ring 321, and the sliding direction of the baffle 3244 is the same as the sliding direction of the scraper 3242, and a connecting groove is provided on the end of the scraper 3242 close to the baffle 3244, one end of the baffle 3244 extends into the connecting groove and is connected to the scraper 3242 with a spring, and the baffle 3244 is used for discharging the waste slag that falls into the fixing ring 321 through the opening and the guide plate to the annular slag collecting plate 14.

[0049] The working principle of the embodiment of the present invention is as follows: when the waste residue adhered to the outer wall of the oil guide pipe 2 is cleared, the driving mechanism 33 is started to drive the sleeve 311 to rotate. At this time, the horizontal mounting plate 312 drives the vertical mounting plate 313 to rotate synchronously with the sleeve 311. Since the support plate 322 is slidably sleeved in the T-shaped groove 3131 on the vertical mounting plate 313 through the T-shaped protrusion arranged thereon, at this time, as the vertical mounting plate 313 rotates, the vertical mounting plate 313 drives the fixing ring 321, the connecting ring 323 and the transmission gear 3252 to slide along the outer wall of the oil guide pipe 2 through the support plate 322 and start to rise or fall at the same time (because the oil guide pipe 2 rises in a spiral shape). At this time, since the transmission gear 3252 and the rack 3251 are meshed with each other, under the action of the rack 3251, as the transmission gear 3252 descends, the transmission gear 3252 The connecting ring 323 is driven to start rotating, so that the scraper 3242 starts to rotate along the outer wall of the oil guide pipe 2 and starts to scrape off the smoke residue adhered to its outer wall. At the same time, the annular plate 34 slides along the oil guide pipe 2 with the connecting ring 323, and the annular plate 34 removes the waste residue remaining on the outer wall of the oil guide pipe 2 after being scraped by the scraper 3242. Since an opening is provided on the side of the fixed ring 321 close to the vertical mounting plate 313 and the bottom of the opening is connected to a guide plate inclined downward in the direction of the vertical mounting plate 313, as the connecting ring 323 rotates, the baffle 3244 discharges the waste residue falling into the fixed ring 321 through the opening and the guide plate to the annular residue collecting plate 14, and pushes the waste residue collected by the annular residue collecting plate 14 to the groove of the annular residue collecting plate 14 through the push plate installed at the bottom of the vertical mounting plate 313, so that the waste residue falls into the residue discharge pipe 11 and is discharged. It can prevent smoke from adhering to the outer wall of the oil guide pipe 2, thereby isolating the oil guide pipe 2 from the heating source, reducing the heat transfer efficiency, and increasing the energy consumption of the boiler. It also prevents waste residue from causing corrosion and wear to the oil pipe components.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A thermal oil boiler, comprising a furnace body and an oil guide pipe located inside the furnace body and spirally arranged in the up-down direction, wherein the top end of the oil guide pipe is fixedly connected to an oil outlet pipe penetrating upward through the furnace body, characterized in that: Also included is a scraping device for scraping off impurities on the outside of the oil guide pipe; The scraping device comprises a mounting frame rotatably mounted on the oil outlet pipe around the axis of the oil outlet pipe, a scraping mechanism arranged on the mounting frame, and a driving mechanism driving the mounting frame to rotate, wherein the mounting frame comprises a sleeve rotatably mounted on the oil outlet pipe, a transverse mounting plate arranged on the sleeve, and a vertical mounting plate arranged on the transverse mounting plate; The scraping mechanism includes a fixed ring sleeved on the outside of the oil guide pipe, a support plate fixed on the fixed ring, the support plate is guided up and down and is slidably assembled on the vertical mounting plate in a limited manner along the rotation direction of the mounting frame, so as to drive the fixed ring to move spirally along the oil guide pipe when the mounting frame rotates, and the scraping mechanism also includes a connecting ring coaxial with the fixed ring and rotatably mounted on the fixed ring, a transmission assembly driving the connecting ring to rotate, and a plurality of scraping assemblies evenly distributed on the connecting ring; The scraper assembly includes a connection block arranged on the connection ring, a scraper contacting the outer wall of the oil guide pipe to scrape impurities, and an elastic member, the scraper is slidably assembled on the connection block in a direction away from the oil guide pipe, and the elastic member is arranged between the connection block and the scraper to apply an elastic force toward the oil guide pipe to the scraper; The transmission assembly includes a rack fixed on the vertical mounting plate and a transmission gear fixed on the connecting ring and meshing with the rack, so as to drive the connecting ring to rotate when the scraping mechanism moves up and down; One end of the scraper close to the oil guide pipe is an inclined surface, and one end of the inclined surface away from the connecting block contacts the outer wall of the oil guide pipe. Both sides of the scraper are provided with protrusions, and the elastic member is arranged between the protrusion of the scraper and the connecting block. The scraping mechanism also includes an annular plate coaxially arranged with the fixing ring and fixed on the fixing ring. The annular plate and the connecting ring are respectively arranged on both sides of the fixing ring. The inner wall of the annular plate contacts the outer wall of the oil guide pipe, and is used to clean the part of impurities remaining on the outer wall of the oil guide pipe after being scraped by the scraper. An opening is provided on one side of the fixing ring close to the vertical mounting plate, and an inclined material guide plate is connected to the bottom of the opening. The material guide plate is inclined from top to bottom and toward the inner wall of the furnace body. One side of the connecting block and the scraper both extend into the fixed ring, and a baffle is slidably sleeved on one end of the connecting block close to the fixed ring. The sliding direction of the baffle is the same as that of the scraper. A connecting groove is provided on the end of the scraper close to the baffle, and one end of the baffle extends into the connecting groove and is connected to the scraper with a spring.

2. A thermal oil boiler according to claim 1, characterized in that: There are two transverse mounting plates symmetrically arranged on both sides of the outer wall of the sleeve, one of the vertical mounting plates is provided with a vertically arranged T-shaped slide groove, and one end of the support plate is provided with a T-shaped protrusion that is slidably sleeved in the T-shaped slide groove of the vertical mounting plate.

3. A thermal oil boiler according to claim 1, characterized in that: An annular slag collecting plate is fixedly installed on the inner wall of the furnace body, and a conical cylinder is arranged on the inner ring wall of the annular slag collecting plate extending upward, and the outer diameter of the conical cylinder gradually increases from top to bottom. A groove is provided on the bottom wall of one side of the annular slag collecting plate, and a slag discharge pipe with one end penetrating the furnace body and connected to the groove of the annular slag collecting plate is fixedly installed on the outer wall of the furnace body, which is used for discharging the waste slag collected by the annular slag collecting plate to the outside of the furnace body, and a push plate is fixedly connected to the bottom of the vertical mounting plate, which is used for pushing the waste slag collected by the annular slag collecting plate to the groove of the annular slag collecting plate, so that the waste slag falls into the slag discharge pipe.

4. A thermal oil boiler according to claim 1, characterized in that: The driving mechanism includes a motor and a transmission member. A transmission cavity is provided on the inner top of the furnace body. The motor is fixedly installed on the top of the furnace body. The output shaft of the motor rotates and penetrates through the top wall of the furnace body and then extends into the transmission cavity. The top end of the sleeve rotates and penetrates through the inner top wall of the furnace body and then extends into the transmission cavity and is connected to the output shaft of the motor through the transmission member.

5. A thermal oil boiler according to claim 4, characterized in that: The transmission member is a driving gear and a driven gear meshing with each other, the driving gear is fixedly mounted on the output shaft of the motor, and the driven gear is fixedly mounted on the outer wall of the sleeve.

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